Position: Common fault of sewing equipment and its treatment
Date:2018-07-12 15:55:00 Hits：1724
Sewing equipment in the use of the process, there will always be some more or less problems, how to better maintenance, related to the service life of the machine.
Common fault of double needle flat sewing machine and its treatment
A, break
1. The shuttle head stop groove of the needle plate has scars. Use diamond file or sandpaper to grind the stop groove of shuttle head until smooth and free of scars. 2. Too strong thread tension. Should adjust the thread tension strength can be.
The relationship between the needle and the spindle tip is incorrect. The clearance should be adjusted to 0.2mm for bobbin thread hook and 0.05mm for needle and bobbin head, and the height of needle rod and the clearance between bobbin head and needle plate should be confirmed.
4. Little oil in the shuttle part. Oil the shuttle.
5. The working range of the wire extractor. The strength should not be appropriate, adjust the wire pulling device.
6. There is wear on the shuttle tip. Use diamond file to polish the shuttle point until it is in good condition.
7. There are scars on the pinhole of the feed tooth. The needle hole of feed tooth should be repaired.
8. Threading error. The thread should be re-threaded.
9. Wrong needle installation. The needle should be reinstalled; If the needle is bent, change it.
10. The presser foot is not installed well. Should be reinstalled.
11. Thread winding, etc., especially easy to break when using polyester thread. Should be as far as possible to reduce the thread tension and pull wire spring force.
Two, line tightness is not good
1. The slip of the shuttle is not good. Replace the bobbin.
2. Use a sewing machine of medium thickness cloth, because the type of cloth and the tightness of the thread may damage the machine. The press foot for thick material should be replaced.
3. Excessive clearance between shuttle head and thread hook. The clearance shall be adjusted to 0.2mm.
4. Too high feed tooth. The feed tooth height shall be adjusted to 1mm.
5. Clearance between shuttle head and needle plate. Adjust the clearance between shuttle head and needle plate to 0.6-0.9mm when standard machine is used; The wire cutting machine is 1.3mm.
6. Move the tip of the upper knife. The front and rear position of the moving knife should be adjusted.
Three, fabric wrinkle too much
1. Too strong thread tension. The thread tension should be minimized.
2. Excessive thread tension. Baseline tension should be minimized.
3. The spring of the wire extractor is too strong. Should be as far as possible to reduce the tension of the wire extractor spring.
4. The wire dipper has a wide working range. You should try to narrow down the operating range of the wire extractor.
5. Low foot pressure. Foot pressure should be increased to the appropriate pressure.
6. Fast motor speed. The sewing speed should be reduced.
7. The sewing machine does not fit the sewing material. Should be replaced with suitable specifications.
Four, jump needle
1. The gap and synchronization position between the needle and the hook are wrong; Should be adjusted according to the correct standard requirements.
2. Pressure on the foot is too low; Foot pressure should be adjusted.
3. The thickness of the needle is not suitable; Should choose the machine needle that accords with fabrics.
4. Re-thread nylon thread or thread that is too thin.
Five, start, face line escape from the needle
1. Too strong tension of thread take-up spring; The tension of the take-up spring should be reduced.
2. The thread tension is too weak; The thread tension should be increased.
Vi. Treatment of floating bottom and surface line
1. Solve the alignment requirements by adjusting the positioning position of the eccentric wheel reasonably; When the machine needle starts to Pierce the material but is 2 ~ 3mm away from the sewing material, the feeding tooth ends. At this time, it is the positioning position of the eccentric wheel.
2. The floating bottom line can be adjusted to solve the tension of the large surface line; Floating surface line can reduce the tension of surface line to solve; You can also adjust the tension of the bottom line to solve.
Seven, towel shape float line of processing method
1. The flexible top of the loose wire can be made by reasonably adjusting the stretching in and out position of the loose wire hook and the stretching in and out position of the wire clamp, so that the wire clamp can both loosen and press the wire.
2. Use oil stone to repair the rust or burr on the arc, and polish to meet certain requirements of smoothness, so that the surface line is not obviously blocked when passing.
Eight, sometimes float line, sometimes not float line of processing method
1. Solve the problem by selecting the bobbin with better coordination.
2. To adjust the smoothness of the outer circle of the shuttle and the shuttle reasonably, different outgoing positions are required, and the outgoing pressure is basically the same.
3. The presser foot should be removed, and the outlet groove under the foot plate should be lengthened with fine sand, and the outlet groove should be polished so that the sewing material can pass smoothly when moving forward.
4. Select reasonable needle and thread according to the sewing materials.
Causes and treatment of common faults of zigzag machine
A, jump needle
1. Improper matching between machine needle, sewing thread and sewing material; Needles suitable for stitching and material should be replaced.
2. Poor quality of stitches, uneven twist, resulting in insufficient stability of coil formation; This should be done by choosing the right stitches, with the right twist, and with the left twist.
3. The needle is bent, blunt, worn or wrongly loaded; Should replace the machine needle, according to the correct way to install the machine needle.
4. For some reason, the spindle tip becomes convex; The spindle tip should be properly polished and polished.
5. The travel height of the needle varies from side to side; The needle should be adjusted to a coordinated position.
6. Needle plate groove and foot groove are too wide, and foot pressure is not enough; Needle plate groove should be replaced, narrow groove pressure foot, increase the pressure.
8. It is caused by the misfit between the planum of the foot press and the planum of the needle plate and the tooth surface; The pressing foot and teeth should be repaired to make the plane of the three parts close together or to replace the qualified pressing foot and teeth.
7. Excessive clearance between upper and lower sleeve of needle rod; Worn sleeves or needle rods should be replaced.
Section and bottom line
1. Poor stitching strength; Replace the stitches
2. The pressure of the face and the bottom line is adjusted too tight, so that the stitches are damaged or the drawnwork is broken; Slowly loosen the thread clamp nut and spindle screw and adjust the thread or bottom line accordingly.
3. The threading sequence is not correct or the needle is bent; Should replace the new machine needle in the correct order thread.
4. The edge of machine needle hole has acute Angle or needle groove hair; Use or replace a new needle after polishing the hole.
5. The shuttle does not swing smoothly or is installed in the wrong position; The position of the hook should be adjusted according to the standard.
6. The hook is damaged or the hook line is too fast or too slow; The hook should be polished or replaced, and the hook line time should be adjusted.
7. The eye of the needle is rough or the groove of the needle plate is damaged; Burnish the needle groove of the rough needle hole needle plate, if the needle groove damage is serious.
8. The bobbin is too big or the bobbin concentricity is not good and the operation is not flexible; The fit between the hook and the bobbin should be improved.
9. The bobbin thread is too full, too loose and too messy, making the thread of the thread thread not free in the sewing process, resulting in thread breakage; The winding machine can be corrected to make the winding on bobbin core uniform, compact and tidy.
10. The position of the feeding tooth is too low, and the distance between the quick mouth at the bottom of the feeding tooth and the outlet line of the bottom line is too small, causing contact friction between the bottom line and the quick mouth at the bottom of the tooth; The height of the feed tooth should be adjusted reasonably, or the quick opening at the bottom of the tooth should be smoothed with fine sand.
11. Poor coordination between shuttlecock and shell, gap between shuttlecock and shell, cannot pass the outgoing tension; The fit gap between the cover and the cover should be adjusted reasonably to keep the tension of the bottom line unchanged.
Third, breakage
1. Needle bending or improper matching with sewing material; The needle suitable for the sewing material should be replaced.
2. If the machine needle is not installed properly, the foot or needle plate may be collided; Should press correct position, reload needle.
3. Positioning of the pendulum mechanism; Should be adjusted by the correct position of the pendulum mechanism and tighten.
4. The clearance, spacing and height of the hook and needle are not right; Should according to the standard, reasonable adjustment.
It doesn't work well
1. The belt is too loose or too tight; Adjust the length of the tape.
2. There is a backlog between the upper (lower part of the feed tooth) and the needle plate; Remove the needle plate to remove the overstock on the feed tooth. 3. There are sundries in the position of the hook (residual thread ends after rolling and breaking); Remove any debris from the hook and add a little more sewing machine oil.
4. Severe wear of parts and components, large fit clearance; The machine shall be fully maintained and adjusted.
The computer embroider machine common breakdown basic processing method
A, break
There are two types of wire breakage, one is regular and the other is irregular.
(1) regular wire breakage
1. The matching gap between the needle and the hook is not right. The needle position is too high or too low, which needs to be readjust.
2. Machine pinholes and needle plate holes have burrs, rotary shuttle has burrs, positioning hook has burrs.
3. If the thread passing part is not smooth, including thread clamping board, thread clamping screw, thread take-up pole hole, upper and lower thread passing frame, etc., all unsmooth or burr shall be handled smoothly or replaced.
4. If the needle is installed backward, it shall be re-installed correctly. If the needle is damaged or the needle is stained with glue, the needle shall be replaced.
5 take-up CAM damage, should be replaced take-up CAM.
6. The spindle moves.
7. The thread passing surface of the hook has scratches and damages.
(2) irregularly broken wires
1. The environment humidity is too high and the line is affected with moisture.
2. It is not reasonable to make a pattern walking needle. Should be revised.
3. The quality of the thread is not up to the requirements, and the installed thread is also not up to the requirements. The embroidery thread is too thick and does not match the machine needle specifications. It should be rewired.
4. The moving frame curve and moving frame Angle are not reasonable, so the computer parameters should be adjusted.
5. The upper and lower shaft drive has clearance or shaft break, which causes the head and hook not to be synchronized. Check the gear box and adjust the chain tightness or gear box timing tape.
6. Rough surface of embroidery thread. Silicon oil should be added on the surface of embroidery thread.
Second, the blocking line
Blocked line is the line in the needle plate under the ball, plug pinhole, the consequences is broken line.
1. Unreasonable gap between positioning hook and shuttle frame. It should be readjusted.
2. Embroidery products are too thin or too loose, and needle plate holes are too big. Should pad two or three layers of non - woven paper.
3. Thread failure. The thread should be checked.
4. The bottom line is too loose and the outgoing direction is wrong. The bottom line should be adjusted.
5. There are sundries or deformation in the shuttle shell, which causes the bobbin core to rotate unsmoothly and easily break the bottom line.
Three, the broken needle
1. The needle is bent and the fastening screw is loose. Need to replace the machine needle and needle screw.
2. Too small clearance between hook and needle. Fit clearance should be adjusted.
3. Clamping plate pressure is too tight, the tension of the surface line is too large, the tension should be adjusted.
4. Pressure foot hole, needle plate hole and machine needle are not aligned.
5. If the frame shifting Angle is wrong, the frame shifting Angle should be adjusted.
6. If the needles are of poor quality, they should be replaced.
7. If the position of the hook is offset, the hook should be adjusted.
Four, jump needle
1. The needle is not well matched with the hook, the needle is too high and the clearance is too large. Needle height should be adjusted.
2. Damaged hook. The shuttle should be replaced.
3. The spring under the needle rod is broken. The springs should be replaced.
4. The embroidery is too loose. Embroidery fabrics should be tightened.
5. Pressure foot is too high or out of shape. Pressure feet should be adjusted or replaced. (when the needle stops, the clearance between the presser foot and the needle plate is 0.5mm-1.5mm), depending on the thickness of the fabric.
Five, throw line, float line
1. The tension between the top and bottom line is too small and loose. The tension should be adjusted.
The quality of the thread is not good. The line should be replaced.
3. Insufficient lubrication of the hook. You should add white oil (twice a shift).
Vi. Pattern shift and deformation
There are many cases of pattern shift, X direction shift, Y direction shift, whole shift, individual head shift, single direction shift, irregular shift and so on.
1. Overall displacement in the X direction, and mechanical failures include: loose coupling of stepping motor, too loose or too tight timing belt, damaged timing wheel bearing, prismatic bearing, taut frame bearing, excessive guide rail clearance, etc.
2. Overall displacement in the Y direction, the fault is the same as that in the X direction, but in a different direction.
3. Overall displacement, in addition to mechanical reasons, there are electronic control faults and plate making reasons.
(1) memory failure, need to clear the computer memory pattern, format. Then re-enter the pattern. General computer should not be too much to store patterns, storage time should not be too long, should regularly clean up patterns, formatting.
(2) grid interference, electromagnet or other electrical components leakage, caused by interference. Need to look for interference source, eliminate interference.
(3) no power failure protection is set. If power failure occurs suddenly, it is necessary to relocate and find the original position.
(4) stepping motor failure, most of the reasons are stepping motor drive, damage, should be repaired or replaced drive.
(5) if the encoder fails, the encoder shall be detected by itself in the computer.
(6) plate making wrong, should be revised.
4. Individual head movement
(1) the pin rod frame is loose and the bearing is damaged. Needle holder should be adjusted and bearings replaced.
(2) needle bar deformation or needle bending. The needle rod and needle should be replaced.
(3) changing color CAM wear. The CAM should be replaced.
(4) color change CAM movement. The clearance should be adjusted.
(5) the needle of the light changing machine is not in place. Needle position should be adjusted for plate notch.
5. Single direction shift
(1) the bottom cloth of the frame is loose. The cloth should be repositioned.
(2) the frame is in a straight line, and the screws of the four-side interface are loose. Should be adjusted.
(3) failure of unilateral y-directional guide rail. Y - direction guide rail fault shall be eliminated.
6. No regular shift. Embroidery is not fixed, should be random movement without regular shift.
7. Head failure
1. Under or under the needle half and rebound back (needle dance phenomenon)
(1) the electromagnet is not released and is always in working state. The electromagnet should be checked.
(2) the top dead center position is wrong, should be adjusted 0 °.
(3) the pendulum block is damaged. The pendulum block should be transposed.
(4) if the needle rod guide plate is damaged, the needle rod guide plate shall be replaced.
(5) if the operation is wrong, it should be checked whether it is in the restitching position.
2.172 ° bottom often offset, should check whether eccentric clamp clamping.
3. Pressure foot does not go up when parking.
(1) electromagnet failure, should be cleaned or replaced electromagnet.
(2) for the fault of the wire breakage detection board, the plug, the detection line and the wire breakage detection board shall be checked.
(3) the power board is damaged, the fuse is burnt out or the bridge is burnt out. Should be change.
(4) needle rod spring is not good, should replace the spring.
Viii. Color change fault
1. The parking is not in place and the color cannot be changed. Stop failure should be eliminated.
2. The nose is dead and cannot change color. The head fault should be removed.
3. The color changing lever is damaged, and cannot be changed.
4. The color changing light is not on, so you cannot change the color. Should check whether the needle position plate is damaged, whether the installation is in place, whether the color change CAM, bearing is bad, pull rod is bite dead, whether the color change CAM ball is broken.
5. If there is a problem with the color changing motor, it cannot be changed, and the motor fault shall be eliminated.
6. Wrong gear matching of thread take-up pole. The take-up pole should be adjusted.
Ix. Failure of the whole machine (the spindle cannot rotate)
1. If the big connecting rod of the head bites to death (caused by oil break), the bearing of the big connecting rod and the big connecting rod should be replaced.
2. If the small spindle of the shuttle nibbles (caused by oil break), replace the small spindle and shaft sleeve of the shuttle and add oil.
3. If the pendulum block and the central shaft bite (caused by oil break), the pendulum block and the central shaft shall be replaced and refueled.
4. If the bolt of needle rod transmission rod is broken, the bolt of needle rod transmission rod shall be replaced, and the shaft of needle rod transmission rod shall be replaced if necessary.
5. Two parts (gear box) bite to death. Applicants should
Common fault of double needle flat sewing machine and its treatment
A, break
1. The shuttle head stop groove of the needle plate has scars. Use diamond file or sandpaper to grind the stop groove of shuttle head until smooth and free of scars. 2. Too strong thread tension. Should adjust the thread tension strength can be.
The relationship between the needle and the spindle tip is incorrect. The clearance should be adjusted to 0.2mm for bobbin thread hook and 0.05mm for needle and bobbin head, and the height of needle rod and the clearance between bobbin head and needle plate should be confirmed.
4. Little oil in the shuttle part. Oil the shuttle.
5. The working range of the wire extractor. The strength should not be appropriate, adjust the wire pulling device.
6. There is wear on the shuttle tip. Use diamond file to polish the shuttle point until it is in good condition.
7. There are scars on the pinhole of the feed tooth. The needle hole of feed tooth should be repaired.
8. Threading error. The thread should be re-threaded.
9. Wrong needle installation. The needle should be reinstalled; If the needle is bent, change it.
10. The presser foot is not installed well. Should be reinstalled.
11. Thread winding, etc., especially easy to break when using polyester thread. Should be as far as possible to reduce the thread tension and pull wire spring force.
Two, line tightness is not good
1. The slip of the shuttle is not good. Replace the bobbin.
2. Use a sewing machine of medium thickness cloth, because the type of cloth and the tightness of the thread may damage the machine. The press foot for thick material should be replaced.
3. Excessive clearance between shuttle head and thread hook. The clearance shall be adjusted to 0.2mm.
4. Too high feed tooth. The feed tooth height shall be adjusted to 1mm.
5. Clearance between shuttle head and needle plate. Adjust the clearance between shuttle head and needle plate to 0.6-0.9mm when standard machine is used; The wire cutting machine is 1.3mm.
6. Move the tip of the upper knife. The front and rear position of the moving knife should be adjusted.
Three, fabric wrinkle too much
1. Too strong thread tension. The thread tension should be minimized.
2. Excessive thread tension. Baseline tension should be minimized.
3. The spring of the wire extractor is too strong. Should be as far as possible to reduce the tension of the wire extractor spring.
4. The wire dipper has a wide working range. You should try to narrow down the operating range of the wire extractor.
5. Low foot pressure. Foot pressure should be increased to the appropriate pressure.
6. Fast motor speed. The sewing speed should be reduced.
7. The sewing machine does not fit the sewing material. Should be replaced with suitable specifications.
Four, jump needle
1. The gap and synchronization position between the needle and the hook are wrong; Should be adjusted according to the correct standard requirements.
2. Pressure on the foot is too low; Foot pressure should be adjusted.
3. The thickness of the needle is not suitable; Should choose the machine needle that accords with fabrics.
4. Re-thread nylon thread or thread that is too thin.
Five, start, face line escape from the needle
1. Too strong tension of thread take-up spring; The tension of the take-up spring should be reduced.
2. The thread tension is too weak; The thread tension should be increased.
Vi. Treatment of floating bottom and surface line
1. Solve the alignment requirements by adjusting the positioning position of the eccentric wheel reasonably; When the machine needle starts to Pierce the material but is 2 ~ 3mm away from the sewing material, the feeding tooth ends. At this time, it is the positioning position of the eccentric wheel.
2. The floating bottom line can be adjusted to solve the tension of the large surface line; Floating surface line can reduce the tension of surface line to solve; You can also adjust the tension of the bottom line to solve.
Seven, towel shape float line of processing method
1. The flexible top of the loose wire can be made by reasonably adjusting the stretching in and out position of the loose wire hook and the stretching in and out position of the wire clamp, so that the wire clamp can both loosen and press the wire.
2. Use oil stone to repair the rust or burr on the arc, and polish to meet certain requirements of smoothness, so that the surface line is not obviously blocked when passing.
Eight, sometimes float line, sometimes not float line of processing method
1. Solve the problem by selecting the bobbin with better coordination.
2. To adjust the smoothness of the outer circle of the shuttle and the shuttle reasonably, different outgoing positions are required, and the outgoing pressure is basically the same.
3. The presser foot should be removed, and the outlet groove under the foot plate should be lengthened with fine sand, and the outlet groove should be polished so that the sewing material can pass smoothly when moving forward.
4. Select reasonable needle and thread according to the sewing materials.
Causes and treatment of common faults of zigzag machine
A, jump needle
1. Improper matching between machine needle, sewing thread and sewing material; Needles suitable for stitching and material should be replaced.
2. Poor quality of stitches, uneven twist, resulting in insufficient stability of coil formation; This should be done by choosing the right stitches, with the right twist, and with the left twist.
3. The needle is bent, blunt, worn or wrongly loaded; Should replace the machine needle, according to the correct way to install the machine needle.
4. For some reason, the spindle tip becomes convex; The spindle tip should be properly polished and polished.
5. The travel height of the needle varies from side to side; The needle should be adjusted to a coordinated position.
6. Needle plate groove and foot groove are too wide, and foot pressure is not enough; Needle plate groove should be replaced, narrow groove pressure foot, increase the pressure.
8. It is caused by the misfit between the planum of the foot press and the planum of the needle plate and the tooth surface; The pressing foot and teeth should be repaired to make the plane of the three parts close together or to replace the qualified pressing foot and teeth.
7. Excessive clearance between upper and lower sleeve of needle rod; Worn sleeves or needle rods should be replaced.
Section and bottom line
1. Poor stitching strength; Replace the stitches
2. The pressure of the face and the bottom line is adjusted too tight, so that the stitches are damaged or the drawnwork is broken; Slowly loosen the thread clamp nut and spindle screw and adjust the thread or bottom line accordingly.
3. The threading sequence is not correct or the needle is bent; Should replace the new machine needle in the correct order thread.
4. The edge of machine needle hole has acute Angle or needle groove hair; Use or replace a new needle after polishing the hole.
5. The shuttle does not swing smoothly or is installed in the wrong position; The position of the hook should be adjusted according to the standard.
6. The hook is damaged or the hook line is too fast or too slow; The hook should be polished or replaced, and the hook line time should be adjusted.
7. The eye of the needle is rough or the groove of the needle plate is damaged; Burnish the needle groove of the rough needle hole needle plate, if the needle groove damage is serious.
8. The bobbin is too big or the bobbin concentricity is not good and the operation is not flexible; The fit between the hook and the bobbin should be improved.
9. The bobbin thread is too full, too loose and too messy, making the thread of the thread thread not free in the sewing process, resulting in thread breakage; The winding machine can be corrected to make the winding on bobbin core uniform, compact and tidy.
10. The position of the feeding tooth is too low, and the distance between the quick mouth at the bottom of the feeding tooth and the outlet line of the bottom line is too small, causing contact friction between the bottom line and the quick mouth at the bottom of the tooth; The height of the feed tooth should be adjusted reasonably, or the quick opening at the bottom of the tooth should be smoothed with fine sand.
11. Poor coordination between shuttlecock and shell, gap between shuttlecock and shell, cannot pass the outgoing tension; The fit gap between the cover and the cover should be adjusted reasonably to keep the tension of the bottom line unchanged.
Third, breakage
1. Needle bending or improper matching with sewing material; The needle suitable for the sewing material should be replaced.
2. If the machine needle is not installed properly, the foot or needle plate may be collided; Should press correct position, reload needle.
3. Positioning of the pendulum mechanism; Should be adjusted by the correct position of the pendulum mechanism and tighten.
4. The clearance, spacing and height of the hook and needle are not right; Should according to the standard, reasonable adjustment.
It doesn't work well
1. The belt is too loose or too tight; Adjust the length of the tape.
2. There is a backlog between the upper (lower part of the feed tooth) and the needle plate; Remove the needle plate to remove the overstock on the feed tooth. 3. There are sundries in the position of the hook (residual thread ends after rolling and breaking); Remove any debris from the hook and add a little more sewing machine oil.
4. Severe wear of parts and components, large fit clearance; The machine shall be fully maintained and adjusted.
The computer embroider machine common breakdown basic processing method
A, break
There are two types of wire breakage, one is regular and the other is irregular.
(1) regular wire breakage
1. The matching gap between the needle and the hook is not right. The needle position is too high or too low, which needs to be readjust.
2. Machine pinholes and needle plate holes have burrs, rotary shuttle has burrs, positioning hook has burrs.
3. If the thread passing part is not smooth, including thread clamping board, thread clamping screw, thread take-up pole hole, upper and lower thread passing frame, etc., all unsmooth or burr shall be handled smoothly or replaced.
4. If the needle is installed backward, it shall be re-installed correctly. If the needle is damaged or the needle is stained with glue, the needle shall be replaced.
5 take-up CAM damage, should be replaced take-up CAM.
6. The spindle moves.
7. The thread passing surface of the hook has scratches and damages.
(2) irregularly broken wires
1. The environment humidity is too high and the line is affected with moisture.
2. It is not reasonable to make a pattern walking needle. Should be revised.
3. The quality of the thread is not up to the requirements, and the installed thread is also not up to the requirements. The embroidery thread is too thick and does not match the machine needle specifications. It should be rewired.
4. The moving frame curve and moving frame Angle are not reasonable, so the computer parameters should be adjusted.
5. The upper and lower shaft drive has clearance or shaft break, which causes the head and hook not to be synchronized. Check the gear box and adjust the chain tightness or gear box timing tape.
6. Rough surface of embroidery thread. Silicon oil should be added on the surface of embroidery thread.
Second, the blocking line
Blocked line is the line in the needle plate under the ball, plug pinhole, the consequences is broken line.
1. Unreasonable gap between positioning hook and shuttle frame. It should be readjusted.
2. Embroidery products are too thin or too loose, and needle plate holes are too big. Should pad two or three layers of non - woven paper.
3. Thread failure. The thread should be checked.
4. The bottom line is too loose and the outgoing direction is wrong. The bottom line should be adjusted.
5. There are sundries or deformation in the shuttle shell, which causes the bobbin core to rotate unsmoothly and easily break the bottom line.
Three, the broken needle
1. The needle is bent and the fastening screw is loose. Need to replace the machine needle and needle screw.
2. Too small clearance between hook and needle. Fit clearance should be adjusted.
3. Clamping plate pressure is too tight, the tension of the surface line is too large, the tension should be adjusted.
4. Pressure foot hole, needle plate hole and machine needle are not aligned.
5. If the frame shifting Angle is wrong, the frame shifting Angle should be adjusted.
6. If the needles are of poor quality, they should be replaced.
7. If the position of the hook is offset, the hook should be adjusted.
Four, jump needle
1. The needle is not well matched with the hook, the needle is too high and the clearance is too large. Needle height should be adjusted.
2. Damaged hook. The shuttle should be replaced.
3. The spring under the needle rod is broken. The springs should be replaced.
4. The embroidery is too loose. Embroidery fabrics should be tightened.
5. Pressure foot is too high or out of shape. Pressure feet should be adjusted or replaced. (when the needle stops, the clearance between the presser foot and the needle plate is 0.5mm-1.5mm), depending on the thickness of the fabric.
Five, throw line, float line
1. The tension between the top and bottom line is too small and loose. The tension should be adjusted.
The quality of the thread is not good. The line should be replaced.
3. Insufficient lubrication of the hook. You should add white oil (twice a shift).
Vi. Pattern shift and deformation
There are many cases of pattern shift, X direction shift, Y direction shift, whole shift, individual head shift, single direction shift, irregular shift and so on.
1. Overall displacement in the X direction, and mechanical failures include: loose coupling of stepping motor, too loose or too tight timing belt, damaged timing wheel bearing, prismatic bearing, taut frame bearing, excessive guide rail clearance, etc.
2. Overall displacement in the Y direction, the fault is the same as that in the X direction, but in a different direction.
3. Overall displacement, in addition to mechanical reasons, there are electronic control faults and plate making reasons.
(1) memory failure, need to clear the computer memory pattern, format. Then re-enter the pattern. General computer should not be too much to store patterns, storage time should not be too long, should regularly clean up patterns, formatting.
(2) grid interference, electromagnet or other electrical components leakage, caused by interference. Need to look for interference source, eliminate interference.
(3) no power failure protection is set. If power failure occurs suddenly, it is necessary to relocate and find the original position.
(4) stepping motor failure, most of the reasons are stepping motor drive, damage, should be repaired or replaced drive.
(5) if the encoder fails, the encoder shall be detected by itself in the computer.
(6) plate making wrong, should be revised.
4. Individual head movement
(1) the pin rod frame is loose and the bearing is damaged. Needle holder should be adjusted and bearings replaced.
(2) needle bar deformation or needle bending. The needle rod and needle should be replaced.
(3) changing color CAM wear. The CAM should be replaced.
(4) color change CAM movement. The clearance should be adjusted.
(5) the needle of the light changing machine is not in place. Needle position should be adjusted for plate notch.
5. Single direction shift
(1) the bottom cloth of the frame is loose. The cloth should be repositioned.
(2) the frame is in a straight line, and the screws of the four-side interface are loose. Should be adjusted.
(3) failure of unilateral y-directional guide rail. Y - direction guide rail fault shall be eliminated.
6. No regular shift. Embroidery is not fixed, should be random movement without regular shift.
7. Head failure
1. Under or under the needle half and rebound back (needle dance phenomenon)
(1) the electromagnet is not released and is always in working state. The electromagnet should be checked.
(2) the top dead center position is wrong, should be adjusted 0 °.
(3) the pendulum block is damaged. The pendulum block should be transposed.
(4) if the needle rod guide plate is damaged, the needle rod guide plate shall be replaced.
(5) if the operation is wrong, it should be checked whether it is in the restitching position.
2.172 ° bottom often offset, should check whether eccentric clamp clamping.
3. Pressure foot does not go up when parking.
(1) electromagnet failure, should be cleaned or replaced electromagnet.
(2) for the fault of the wire breakage detection board, the plug, the detection line and the wire breakage detection board shall be checked.
(3) the power board is damaged, the fuse is burnt out or the bridge is burnt out. Should be change.
(4) needle rod spring is not good, should replace the spring.
Viii. Color change fault
1. The parking is not in place and the color cannot be changed. Stop failure should be eliminated.
2. The nose is dead and cannot change color. The head fault should be removed.
3. The color changing lever is damaged, and cannot be changed.
4. The color changing light is not on, so you cannot change the color. Should check whether the needle position plate is damaged, whether the installation is in place, whether the color change CAM, bearing is bad, pull rod is bite dead, whether the color change CAM ball is broken.
5. If there is a problem with the color changing motor, it cannot be changed, and the motor fault shall be eliminated.
6. Wrong gear matching of thread take-up pole. The take-up pole should be adjusted.
Ix. Failure of the whole machine (the spindle cannot rotate)
1. If the big connecting rod of the head bites to death (caused by oil break), the bearing of the big connecting rod and the big connecting rod should be replaced.
2. If the small spindle of the shuttle nibbles (caused by oil break), replace the small spindle and shaft sleeve of the shuttle and add oil.
3. If the pendulum block and the central shaft bite (caused by oil break), the pendulum block and the central shaft shall be replaced and refueled.
4. If the bolt of needle rod transmission rod is broken, the bolt of needle rod transmission rod shall be replaced, and the shaft of needle rod transmission rod shall be replaced if necessary.
5. Two parts (gear box) bite to death. Applicants should