CN111593504B - Quilting machine thread feeding structure - Google Patents
Quilting machine thread feeding structure Download PDFInfo
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- CN111593504B CN111593504B CN202010374470.XA CN202010374470A CN111593504B CN 111593504 B CN111593504 B CN 111593504B CN 202010374470 A CN202010374470 A CN 202010374470A CN 111593504 B CN111593504 B CN 111593504B
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B51/00—Applications of needle-thread guards; Thread-break detectors
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B47/00—Needle-thread tensioning devices; Applications of tensometers
- D05B47/04—Automatically-controlled tensioning devices
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B63/00—Devices associated with the loop-taker thread, e.g. for tensioning
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B71/00—Lubricating or cooling devices
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- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention relates to a yarn feeding structure of a quilting machine, which relates to the technical field of textile machinery and comprises a support frame, a yarn breakage detection device, a quilting device and a compensation device, wherein the compensation device comprises a guide mechanism and a compensation mechanism, the compensation mechanism comprises a second guide sleeve, a first piston, a second piston, a third piston, a one-way damping valve and a tension and compression spring, the guide mechanism comprises a guide support frame, a first guide wheel and a second guide wheel, the guide support frame is fixedly connected with the first piston, the second guide wheel is rotatably connected with the guide support frame, the first guide wheel is rotatably connected with the support frame, and the second guide wheel is arranged between the first guide wheel and the yarn breakage detection device. The invention can compensate the variable quantity of the suture when the suture needle extends out, the hook of the rotating shuttle is hooked, the rotating shuttle is released and the suture needle is retracted, reduce the probability of error detection of the thread breakage detection device and simultaneously reduce the probability of thread breakage of the suture.
Description
Technical Field
The invention relates to the technical field of textile machinery, in particular to a yarn feeding structure of a quilting machine.
Background
The quilting machine is a textile machine for sewing linear patterns on the surfaces of mattresses, bedspreads, quilts and the like. Quilting machines for quilt sewing and forming can be divided into straight quilting machines and computer quilting machines according to the quantity of needles and the types of sewing patterns. The straight quilting machines are generally three types of 7 needles, 9 needles and 11 needles, and can only sew straight lines; the computerized quilting machine is designed as a single needle, and the movement of the machine is controlled by a computer visual interface to realize the sewing of patterns.
At present, the announcement date is 09 and 13 in 2019, and a chinese utility model patent with the announcement number of CN209383943U proposes a thread break detection device for a quilter, which comprises a housing, a thread inlet arranged at the top of the housing, a thread outlet arranged at the bottom of the housing, an elastic component arranged inside the housing and below the thread inlet, a guide wheel arranged inside the housing and below the elastic component, and a conductive plate located at one end of the elastic component, wherein the conductive plate is fixed on the top wall of the housing and electrically connected with a working circuit of the quilter, one end of the elastic component is fixed on the inner wall of the housing, the other end of the elastic component is close to the conductive plate and integrally connected with an iron block which is in contact with the conductive plate, and the elastic component is horizontally and slidably arranged in the housing relative to the bottom wall of the housing; the guide wheel is positioned below one end of the elastic assembly close to the conductive plate.
When sewing is carried out, if the sewing thread is broken, the elastic component is not pulled by the sewing thread any more, the elastic component enables the conductive iron block to be separated from the conductive plate under the action of the elastic force of the elastic component, the conductive plate and the iron block are broken at the moment, and the working circuit of the quilting machine is controlled to be disconnected, so that the quilting machine is prevented from continuously running after the sewing thread is broken.
The rotating shuttle is an important component of a sewing machine, and among sewing machines, a sewing machine sewing with a lock stitch is most common. Most of these machines employ a rotating shuttle which hooks the loop with its tip, expands the loop and guides the thread around the bobbin to form a lock stitch.
When the quilting machine is used for sewing, the motion and motion relations of a sewing needle, a sewing thread and a rotating shuttle are roughly analyzed as follows:
step one, a sewing needle extends out and punctures cloth, and a sewing line extends forwards at the moment;
secondly, the rotating shuttle hooks the suture line to expand the line ring, and the suture line extends forwards;
thirdly, the rotating shuttle loosens the suture thread to reduce the thread ring, and the suture thread is reversely withdrawn;
fourthly, the sewing needle is withdrawn to finish one sewing, and the suture is withdrawn reversely.
Therefore, the following defects can be analyzed in the prior art scheme: when the sewing needle extends out, the sewing needle drives the sewing thread to extend out together, and the pull force of the sewing thread can enable the iron block to be in contact with the current conducting plate; when the sewing needle is retracted, the sewing thread can not provide force for the elastic component, at the moment, the iron block is easily separated from the conductive plate under the action of the elastic component, so that the thread breakage detection device misdetects the thread breakage, and the quilting machine is stopped unexpectedly under the condition that the sewing thread is not broken.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a thread feeding mechanism of a quilting machine, which can keep tension of a thread when a rotary shuttle loosens the thread and a sewing needle retracts, so that a thread breakage detection device is not easy to detect by mistake, the detection precision is improved, the probability of accidental stop of the quilting machine is reduced, and the quilting efficiency of the quilting machine is improved.
The above object of the present invention is achieved by the following technical solutions:
a quilter thread feeding structure comprises a support frame, a thread breakage detection device, a quilting device and a compensation device, wherein the thread breakage detection device comprises a conductive shaft, a detection pulley, a detection hook, a coil spring and a conductive block, the conductive shaft is fixedly connected to the support frame, the detection pulley is rotatably connected to the conductive shaft, the coil spring is arranged between the detection pulley and the support frame, one end of the coil spring is fixedly connected with the conductive shaft, the detection hook is fixedly connected to one end, far away from the conductive shaft, of the coil spring, the conductive block is fixedly connected to the support frame, and the detection hook is abutted to the conductive block; the quilting device comprises a crankshaft, a cam, a sewing needle frame, a first guide sleeve, a compression spring and a sewing needle, wherein the crankshaft is rotationally connected to the support frame, the cam is fixedly connected to the crankshaft, the rotating axis of the cam is coaxial with the rotating axis of the crankshaft, the first guide sleeve is fixedly connected to the support frame, the sewing needle frame rotates through the first guide sleeve, the sewing needle frame is connected with the first guide sleeve in a sliding manner along the length direction of the first guide sleeve, a first limit block is fixedly connected to the outer peripheral surface of the sewing needle frame, the compression spring is sleeved on the sewing needle frame, one end of the compression spring is fixedly connected with the first limit block, the other end of the compression spring is fixedly connected with the first guide sleeve, the sewing needle is detachably and fixedly connected to the sewing needle frame, the compensation device comprises a guide mechanism and a compensation mechanism, the compensation mechanism comprises a second guide sleeve, a first piston, a second piston, a third piston, a one-way damping valve and a tension and compression spring, the second guide sleeve is connected with the support frame, the first piston, the second piston and the third piston are all arranged in the second guide sleeve, the first piston, the second piston and the third piston are sequentially arranged in the second guide sleeve, the one-way damping valve is fixedly connected in the second guide sleeve, the one-way damping valve is arranged between the first piston and the second piston, the one-way damping valve divides the second guide sleeve into a first pressure cavity and a second pressure cavity, one end of the tension and compression spring is fixedly connected with the second piston, the other end of the tension and compression spring is fixedly connected with the third piston, the third piston is connected with a torque shaft of the crankshaft through a connecting rod, and the guide mechanism comprises a guide support frame, First leading wheel and second leading wheel, direction support frame fixed connection be in on the first piston, first leading wheel swivelling joint is in on the support frame, the second leading wheel swivels to be connected on the direction support frame, just the second leading wheel sets up first leading wheel is kept away from one side of seam needle, the suture winding is in on the outer peripheral face of detection pulley, and the suture passes the detection colludes, and the suture is established in proper order again first leading wheel with on the outer peripheral face of second leading wheel, last suture passes the seam needle.
By adopting the technical scheme, the crankshaft drives the sewing needle frame to slide and drives the third piston to slide, the cam drives the sewing needle to extend, the sewing thread extends forwards at the moment, the third piston slides towards one side close to the sewing needle frame, the third piston drives the second piston to slide, the one-way damping valve does not play a damping role at the moment, air in the first pressure cavity can smoothly enter the second pressure cavity, the first piston slides towards the third piston, the second guide wheel slides towards the first guide wheel, the second guide wheel compensates the extension amount of the sewing thread at the moment, and the speed of the sewing thread at the detection pulley does not suddenly rise due to the extension of the sewing needle; when the rotating shuttle hooks the suture to expand the thread loop, the third piston continuously slides towards one side close to the sewing needle frame, the second guide wheel slides towards the first guide wheel, the amount of the thread loop when expanded is compensated by the second guide wheel, and the speed of the suture at the position of the detection pulley does not suddenly rise due to the fact that the rotating shuttle hooks the suture; when the rotating shuttle looses the thread and the sewing needle is withdrawn, the cloth moves to consume the thread, meanwhile, part of the thread rebounds, the third piston slides towards the first piston under the action of the crankshaft, the one-way damping valve plays a damping role, the tension and compression spring is pressed, the flow rate of air in the second pressure cavity flowing into the first pressure cavity is reduced, the rebounding speed of the second guide wheel is reduced, the thread consumed during the cloth moving is further compensated, the speed of the thread at the detection pulley does not suddenly and reversely move due to the withdrawing of the rotating shuttle loosening thread and the sewing needle, the thread still applies pressure to the detection hook at the moment, the detection hook does not rebound under the action of the coil spring, the detection hook cannot abut against the conductive block, the broken thread detection device does not give an alarm, the probability of misdetection of the broken thread detection device is reduced, the anti-interference capability of the broken thread detection device is improved, and the probability of accidental operation stop of the quilting machine is further reduced, the quilting efficiency of the quilting machine is improved; meanwhile, when the sewing thread rebounds, the second guide wheel rebounds slowly under the action of the one-way damping valve, so that the tension borne by the sewing thread is reduced, the probability that the sewing thread is broken is further reduced, and the quilting efficiency of the quilting machine is improved.
The present invention in a preferred example may be further configured to: the second guide sleeve is connected with the support frame in a sliding mode along the length direction of the second guide sleeve.
By adopting the technical scheme, when the sewing needle extends out and the rotating shuttle hooks the sewing thread, the first piston and the second guide sleeve can slide towards the sewing needle frame, when the rotating shuttle loosens the sewing thread, the second guide sleeve firstly slides towards one end far away from the sewing needle frame under the action of the one-way damping valve, at the moment, the second guide wheel quickly compensates the resilience of the sewing thread, the probability of the reverse rotation of the sewing thread at the detection pulley is reduced again, and the probability of the error detection of the broken thread detection device is further reduced again; when the sewing needle is withdrawn, the second guide sleeve is kept still, and the first piston slides to compensate the consumed sewing thread when the cloth moves.
The present invention in a preferred example may be further configured to: one end of the second guide sleeve, which is close to the crankshaft, is fixedly connected with a first baffle.
Through adopting above-mentioned technical scheme, when the third piston was slided towards the one end that is close to the bent axle by the connecting rod drive, after third piston and first baffle butt, the second uide bushing just must continue the lapse, avoids leading to the third piston to deviate from in the second uide bushing because of the second uide bushing reacts lazyly when sliding with the support frame, has improved compensation arrangement's reliability.
The present invention in a preferred example may be further configured to: the first baffle plate is provided with a connecting rod hole for the connecting rod to pass through, and the connecting rod hole is a waist-shaped hole.
By adopting the technical scheme, the connecting rod passes through the connecting rod hole and then is connected with the third piston, and when the crankshaft drives the connecting rod, the connecting rod can slide in the connecting rod hole, so that the crankshaft is not influenced to drive the third piston, and meanwhile, the first baffle can effectively block the third piston.
The present invention in a preferred example may be further configured to: the compensation device further comprises a cooling mechanism, the second guide sleeve is arranged in a hollow mode, the cooling mechanism comprises an oil tank, an oil pump, an oil inlet pipe and an oil outlet pipe, the oil tank is fixedly connected to the support frame, one end of the oil pump is communicated with the interior of the oil tank, one end of the oil inlet pipe is communicated with the oil outlet of the oil pump, and the other end of the oil inlet pipe is communicated with the second guide sleeve; one end of the oil outlet pipe is communicated with the second guide sleeve, and the other end of the oil outlet pipe is communicated with the oil tank.
Through adopting above-mentioned technical scheme, when the bent axle rotated, first piston, second piston, third piston frictional heating in the second uide bushing, the oil pump begins to start and cools off for the second uide bushing this moment, and then gives first piston, second piston, third piston cooling, avoids first piston, second piston, third piston to receive the thermal energy card to die in the second uide bushing.
The present invention in a preferred example may be further configured to: the oil inlet pipe and the oil outlet pipe are flexible pipes.
Through adopting above-mentioned technical scheme, when the second uide bushing slided along self length direction and support frame, advance oil pipe and go out oil pipe still can with the second uide bushing intercommunication, make the second uide bushing always be in the cooling state, improved the refrigerated effect of second uide bushing.
The present invention in a preferred example may be further configured to: the outer peripheral face of the second guide sleeve is fixedly connected with a first guide block and a second guide block, a guide groove is formed in the support frame, and the first guide block and the second guide block are clamped in the guide groove.
By adopting the technical scheme, the first guide block and the second guide block have a guide function, so that the second guide sleeve is prevented from rotating relative to the support frame along the axis of the second guide sleeve, and the oil inlet pipe and the oil outlet pipe are prevented from being wound on the sewing needle frame and the guide support frame; meanwhile, the first guide block and the second guide block are also used for limiting, so that the second guide sleeve is prevented from being separated from the support frame at two ends in the length direction of the second guide sleeve, and the reliability of the compensating device is improved.
The present invention in a preferred example may be further configured to: and the connecting line of the first guide block and the second guide sleeve axis is perpendicular to the rotating axis of the crankshaft.
Through adopting above-mentioned technical scheme, first guide block and second guide block when playing the direction effect, can furthest reduce the bent stress that the bent axle produced first guide block, second guide block, and then avoid first guide block, the card of second guide block to die in the guide way, have improved compensation arrangement's reliability.
In summary, the invention includes at least one of the following beneficial technical effects:
1. due to the arrangement of the compensation mechanism, the suture at the position of the detection pulley is not easy to rotate reversely, the tension of the suture is kept, the probability of misdetection of the thread breakage detection device is reduced, the anti-interference capability of the thread breakage detection device is improved, the probability of accidental stop of the quilting machine is further reduced, and the quilting efficiency of the quilting machine is improved; meanwhile, when the sewing thread rebounds, the second guide wheel rebounds slowly under the action of the one-way damping valve, so that the instant tension borne by the sewing thread is reduced, the probability of breaking the sewing thread is further reduced, and the quilting efficiency of the quilting machine is improved.
2. The second guide sleeve is connected with the support frame in a sliding manner, so that the probability of reverse rotation of the suture at the detection pulley is further reduced, and the probability of error detection of the broken thread detection device is further reduced; when the sewing needle is withdrawn, the second guide sleeve is kept still, and the first piston slides to compensate the consumed sewing thread when the cloth moves.
3. Through the arrangement of the cooling mechanism, the probability that the first piston, the second piston and the third piston are clamped in the second guide sleeve is reduced, and the stability of the compensating device is improved.
Drawings
FIG. 1 is a schematic view of an overall structure of one of the views in the present embodiment;
FIG. 2 is a partially enlarged view of portion A of FIG. 1
FIG. 3 is a schematic view of another embodiment of the overall structure;
FIG. 4 is an enlarged partial view of portion B of FIG. 3;
FIG. 5 is a partial schematic view of the compensation mechanism;
FIG. 6 is an enlarged partial view of part C of Table 5.
Reference numerals: 1. a support frame; 11. sewing; 12. a guide groove; 2. a wire breakage detection device; 21. a conductive shaft; 22. detecting a pulley; 23. detecting hooks; 24. a coil spring; 25. a conductive block; 3. a quilting device; 31. a crankshaft; 32. a cam; 33. sewing a needle frame; 331. a first stopper; 34. a first guide sleeve; 35. a compression spring; 36. sewing a needle; 4. a compensation device; 5. a guide mechanism; 51. a first guide wheel; 52. a second guide wheel; 53. a guide support frame; 6. a compensation mechanism; 61. a second guide sleeve; 611. a partition plate; 612. a first guide block; 613. a second guide block; 614. a first baffle plate; 615. a second baffle; 616. a connecting rod hole; 62. a first piston; 63. a second piston; 64. a third piston; 65. a one-way damping valve; 66. pulling and pressing the spring; 67. a connecting rod; 68. a first pressure chamber; 69. a second pressure chamber; 7. a cooling mechanism; 71. an oil tank; 72. an oil pump; 73. an oil inlet pipe; 74. an oil outlet pipe.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, the present embodiment provides a thread feeding structure of a quilting machine, which includes a support frame 1, and a thread breakage detecting device 2 for detecting whether a thread 11 is broken is disposed on the support frame 1. The broken thread detection device 2 comprises a conductive shaft 21, a detection pulley 22 is coaxially and rotatably connected on the conductive shaft 21, and the suture thread 11 is wound on the outer peripheral surface of the detection pulley 22 by at least one turn.
A coil spring 24 is further arranged between the detection pulley 22 and the support frame 1, one end of the coil spring 24 is clamped with the conductive shaft 21, and the other end of the coil spring 24 is clamped with a detection hook 23. The coil spring 24 and the detection hook 23 are made of conductive metal, such as copper or iron. A coil spring 24 is wound on the outer peripheral surface of the electric conductive shaft 21, and the coil spring 24 is wound on the electric conductive shaft 21 in the opposite direction to the direction in which the suture 11 is wound on the detection pulley 22.
The direction of the detection hook 23 is the same as the winding direction of the coil spring 24, and the suture 11 is wound on the detection pulley 22 and then goes deep into the detection hook 23. The disconnection detecting device 2 further comprises a conductive block 25, the conductive block 25 is fixedly connected to the support frame 1 through a screw, and the conductive block 25 is in insulation connection with the support frame 1. When the coil spring 24 is retracted, the detection hook 23 abuts against the conductive block 25, and at this time, the conductive shaft 21, the coil spring 24, the detection hook 23, and the conductive block 25, together with the power supply, form a closed loop.
Referring to fig. 3 and 4, the support frame 1 is further provided with a quilting apparatus 3, the quilting apparatus 3 includes a crankshaft 31, the crankshaft 31 is rotatably connected to the support frame 1, a cam 32 is fixedly connected to the crankshaft 31 by a fastening screw, and a rotation shaft of the cam 32 is coaxial with a rotation shaft of the crankshaft 31.
The quilting apparatus 3 further comprises a stitch frame 33, a first guide sleeve 34, a compression spring 35 and a stitch 36, wherein the first guide sleeve 34 is welded or fixedly connected to the support frame 1 through screws. The needle sewing frame 33 is arranged in an L shape, one end of the needle sewing frame 33 is abutted against the outer peripheral surface of the cam 32, and the other end of the needle sewing frame 33 penetrates through the first guide sleeve 34 and the support frame 1. The first stopper 331 is integrally formed on the outer peripheral surface of the needle sewing frame 33, the compression spring 35 is sleeved on the outer peripheral surface of the needle sewing frame 33, and the compression spring 35 is arranged in the first guide sleeve 34.
One end of the compression spring 35 abuts against the first stopper 331, and the other end of the compression spring 35 abuts against the first guide bush 34. The needle sewing frame 33 slides with the support frame 1 along the length direction of the guide sleeve. The sewing needle 36 is detachably clamped at one end of the sewing needle frame 33 far away from the cam 32, and the axial center of the sewing needle 36 is the same as the sliding direction of the sewing needle frame 33.
Referring to fig. 5-level 6, the compensation device 4 includes a compensation mechanism 6, and the compensation mechanism 6 includes a second guide sleeve 61, and the second guide sleeve 61 is disposed between the thread breakage detecting device 2 and the quilting device 3. The second guide sleeve 61 is connected with the support frame 1 in a sliding way along the sliding direction of the sewing needle frame 33, and the first-pass arrangement of the second guide sleeve 61 is the same as the axial direction of the second guide sleeve 61. The support frame 1 is provided with a guide groove 12, and the outer peripheral surface of the second guide sleeve 61 is fixedly connected with a first guide block 612 and a second guide block 613 through screws. The first guide block 612 and the second guide block 613 are located on the same plane, and the first guide block 612 and the second guide block 613 are both clamped in the guide blocks. The line connecting the first guide block 612 and the axis of the second guide sleeve 61 is perpendicular to the rotation axis of the crankshaft 31.
The compensation mechanism 6 further comprises a first piston 62, a second piston 63 and a third piston 64, wherein the first piston 62, the second piston 63 and the third piston 64 are sequentially arranged in the second guide sleeve 61, the first piston 62 is close to the thread breakage detection device 2, and the third piston 64 is opened into the quilting device 3. A partition plate 611 is integrally formed or welded on an inner circumferential surface of the second guide sleeve 61, the partition plate 611 is disposed between the first piston 62 and the second piston 63, and the partition plate 611 partitions the second guide sleeve 61 into a first pressure chamber 68 and a second pressure chamber 69. A one-way damping valve 65 is embedded in the partition plate 611, and the one-way damping valve 65 communicates the first pressure chamber 68 with the second pressure chamber 69.
A tension and compression spring 66 is arranged between the second piston 63 and the third piston 64, one end of the tension and compression spring 66 is clamped with the second piston 63, and the other end of the tension and compression spring 66 is clamped with the third piston 64. The third piston 64 is connected to the torque shaft of the crankshaft 31 via a connecting rod 67, wherein one end of the connecting rod 67 is hinged to the third piston 64, and the other end of the connecting rod 67 is hinged to the torque shaft of the crankshaft 31.
A first baffle plate 614 is fixedly connected to one end of the second guide sleeve 61 close to the crankshaft 31 by a fastening screw, and the first baffle plate 614 is mainly used for preventing the third piston 64 from falling off from the second guide sleeve 61. The first baffle 614 is provided with a connecting rod hole 616 for the connecting rod 67 to pass through, the connecting rod hole 616 is a kidney-shaped hole, and the length direction of the kidney-shaped hole is perpendicular to the axial direction of the crankshaft 31. The end of the second guide sleeve 61 away from the first baffle plate 614 is fixedly connected with a second baffle plate 615 through a fastening screw, and the second baffle plate 615 mainly prevents the first piston 62 from falling off from the second guide sleeve 61 due to inertia.
The compensating device 4 further comprises a guiding mechanism 5, and the guiding mechanism 5 comprises a guiding support 53, a first guiding wheel 51 and a second guiding wheel 52. The guide support frame 53 is also L-shaped, one end of the guide support frame 53 is clamped on the first piston 62, and the other end of the guide support frame 53 passes through the support frame 1 and is arranged outside the support frame 1. The second guide wheel 52 is rotatably connected to one end of the guide support frame 53 far away from the first piston 62, the first guide wheel 51 is rotatably connected to the support frame 1, and the second guide wheel 52 is arranged between the first guide wheel 51 and the detection pulley 22. The first guide wheel 51, the second guide wheel 52 and the detection pulley 22 are parallel to each other in axial center.
After passing through the detection hook 23, the suture 11 is wound around the outer circumferential surface of the first guide wheel 51, then wound around the outer circumferential surface of the second guide wheel 52, and finally passed through the needle 36.
The compensating device 4 further comprises a cooling mechanism 7, and the cooling mechanism 7 comprises an oil tank 71, an oil pump 72, an oil inlet pipe 73 and an oil outlet pipe 74. The oil tank 71 is fixedly connected to the support frame 1 through bolts, the oil pump 72 is also fixedly connected to the support frame 1 through bolts, and one end of the oil pump 72 is communicated with the inside of the oil tank 71. The second guide sleeve 61 is hollow, one end of the oil inlet pipe 73 is communicated with an oil outlet of the oil pump 72, and the other end of the oil inlet pipe 73 is communicated with the second guide sleeve 61; one end of the oil outlet pipe 74 communicates with the second guide sleeve 61, and the other end of the oil outlet pipe 74 communicates with the oil tank 71. The oil inlet pipe 73 and the oil outlet pipe 74 are hoses made of rubber.
The implementation principle of the embodiment is as follows:
when the needle 36 extends, the connecting rod 67 pulls the third piston 64, and at this time, the third piston 64 slides along the length direction of the second guide sleeve 61 toward the direction close to the crankshaft 31, or the third piston 64 and the second guide sleeve 61 are relatively static, and the second guide sleeve 61 slides along the length direction thereof toward the direction close to the crankshaft 31, or the third piston 64 and the second guide sleeve 61 slide relatively, and the second guide sleeve 61 slides toward the crankshaft 31, according to any of the above sliding modes, the first piston 62 slides toward the crankshaft 31, the relative displacement between the first piston 62 and the crankshaft 31 is unchanged, and the second guide wheel 52 slides toward the needle 36, thereby compensating the extending amount of the suture line 11 when the needle 36 extends.
When the rotary shuttle catches the thread 11 to enlarge the thread ring, the connecting rod 67 continuously pulls the third piston 64, and at the same time, as the state when the sewing needle 36 extends, the first piston 62 continuously slides towards the crankshaft 31, the relative displacement of the first piston 62 and the crankshaft 31 is unchanged, and the second guide wheel 52 continuously slides towards the sewing needle 36, so that the extending amount of the thread 11 when the rotary shuttle catches the thread 11 to enlarge the thread ring is compensated.
When the rotary shuttle releases the thread 11 to shrink the thread loop, the connecting rod 67 pushes the third piston 64, and because of the resistance of the one-way damping valve 65, the second guide sleeve 61 slides away from the crankshaft 31 first, the first piston 62 also slides away from the crankshaft 31, and the first piston 62 is stationary relative to the second guide sleeve 61, and the second guide wheel 52 slides away from the needle 36, thereby compensating the retraction amount of the thread 11 when the rotary shuttle releases the thread 11.
When the sewing needle 36 is retracted, the connecting rod 67 continues to push the third piston 64, air in the second pressure chamber 69 is not easy to flow into the first pressure chamber 68 due to the arrangement of the one-way damping valve 65, the third piston 64 slides in the direction away from the crankshaft 31, the first piston 62 also slides in the direction away from the crankshaft 31, but the sliding speed of the first piston 62 is lower than that of the third piston 64, the cloth is displaced relative to the sewing needle 36 when the sewing needle 36 is retracted, the sewing thread 11 is consumed at the moment, and the second guide wheel 52 slides in the direction away from the sewing needle 36, so that the retracting amount of the sewing thread 11 and the consumption amount of the sewing thread 11 when the sewing needle 36 is retracted are compensated.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. A quilter thread feeding structure is characterized by comprising a support frame (1), a thread breakage detection device (2), a quilting device (3) and a compensation device (4), wherein the thread breakage detection device (2) comprises a conductive shaft (21), a detection pulley (22), a detection hook (23), a coil spring (24) and a conductive block (25), the conductive shaft (21) is fixedly connected to the support frame (1), the detection pulley (22) is rotatably connected to the conductive shaft (21), the coil spring (24) is arranged between the detection pulley (22) and the support frame (1), one end of the coil spring (24) is fixedly connected with the conductive shaft (21), the detection hook (23) is fixedly connected to one end, far away from the conductive shaft (21), of the coil spring (24), and the conductive block (25) is fixedly connected to the support frame (1), the detection hook (23) is abutted against the conductive block (25); the quilting device (3) comprises a crankshaft (31), a cam (32), a sewing needle frame (33), a first guide sleeve (34), a compression spring (35) and a sewing needle (36), wherein the crankshaft (31) is rotatably connected on the support frame (1), the cam (32) is fixedly connected on the crankshaft (31), the rotating axis of the cam (32) is coaxial with the rotating axis of the crankshaft (31), the first guide sleeve (34) is fixedly connected on the support frame (1), the sewing needle frame (33) penetrates through the first guide sleeve (34), the sewing needle frame (33) is connected with the first guide sleeve (34) in a sliding manner along the length direction of the first guide sleeve (34), a first limiting block (331) is fixedly connected on the outer peripheral surface of the sewing needle frame (33), and the compression spring (35) is sleeved on the sewing needle frame (33), one end of the compression spring (35) is fixedly connected with the first limiting block (331), the other end of the compression spring (35) is fixedly connected with the first guide sleeve (34), the sewing needle (36) is detachably and fixedly connected with the sewing needle frame (33), the compensation device (4) comprises a guide mechanism (5) and a compensation mechanism (6), the compensation mechanism (6) comprises a second guide sleeve (61), a first piston (62), a second piston (63), a third piston (64), a one-way damping valve (65) and a tension and compression spring (66), the second guide sleeve (61) is connected with the support frame (1), the first piston (62), the second piston (63) and the third piston (64) are all arranged in the second guide sleeve (61), and the first piston (62), the second piston (63) and the third piston (64) are sequentially arranged in the second guide sleeve (61), the one-way damping valve (65) is fixedly connected in the second guide sleeve (61), the one-way damping valve (65) is arranged between the first piston (62) and the second piston (63), the one-way damping valve (65) divides the second guide sleeve (61) into a first pressure cavity (68) and a second pressure cavity (69), one end of the tension and compression spring (66) is fixedly connected with the second piston (63), the other end of the tension and compression spring (66) is fixedly connected with the third piston (64), the third piston (64) is connected with a torque shaft of the crankshaft (31) through a connecting rod (67), the guide mechanism (5) comprises a guide support frame (53), a first guide wheel (51) and a second guide wheel (52), the guide support frame (53) is fixedly connected on the first piston (62), and the first guide wheel (51) is rotatably connected on the support frame (1), second leading wheel (52) rotate to be connected on direction support frame (53), just second leading wheel (52) set up first leading wheel (51) are kept away from the one side of seam needle (36), and suture (11) winding is in detect on the outer peripheral face of pulley (22), and suture (11) pass detect collude (23), and suture (11) overlap in proper order again establish first leading wheel (51) with on the outer peripheral face of second leading wheel (52), and seam needle (36) are passed in last suture (11).
2. The thread feeding structure of a quilting machine as claimed in claim 1, wherein: the second guide sleeve (61) is connected with the support frame (1) in a sliding mode along the length direction of the second guide sleeve.
3. The thread feeding structure of a quilting machine as claimed in claim 2, wherein: one end, close to the crankshaft (31), of the second guide sleeve (61) is fixedly connected with a first baffle plate (614).
4. The thread feeding structure of a quilting machine as claimed in claim 3, wherein: the first baffle plate (614) is provided with a connecting rod hole (616) for the connecting rod (67) to pass through, and the connecting rod hole (616) is a waist-shaped hole.
5. The feed structure of quilting machine as defined in any one of claims 1 to 4, wherein: the compensating device (4) further comprises a cooling mechanism (7), the second guide sleeve (61) is arranged in a hollow mode, the cooling mechanism (7) comprises an oil tank (71), an oil pump (72), an oil inlet pipe (73) and an oil outlet pipe (74), the oil tank (71) is fixedly connected to the support frame (1), one end of the oil pump (72) is communicated with the inside of the oil tank (71), one end of the oil inlet pipe (73) is communicated with an oil outlet of the oil pump (72), and the other end of the oil inlet pipe (73) is communicated with the second guide sleeve (61); one end of the oil outlet pipe (74) is communicated with the second guide sleeve (61), and the other end of the oil outlet pipe (74) is communicated with the oil tank (71).
6. The thread feeding structure of a quilting machine as claimed in claim 5, wherein: the oil inlet pipe (73) and the oil outlet pipe (74) are both flexible pipes.
7. The thread feeding structure of a quilting machine as claimed in claim 6, wherein: the outer peripheral surface of the second guide sleeve (61) is further fixedly connected with a first guide block (612) and a second guide block (613), a guide groove (12) is formed in the support frame (1), and the first guide block (612) and the second guide block (613) are clamped in the guide groove (12).
8. The thread feeding structure of a quilting machine as claimed in claim 7, wherein: the connecting line of the first guide block (612) and the second guide sleeve (61) is perpendicular to the rotation axis of the crankshaft (31).
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| CN202010374470.XA CN111593504B (en) | 2020-05-06 | 2020-05-06 | Quilting machine thread feeding structure |
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| CN111593504B true CN111593504B (en) | 2021-08-17 |
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| CN104499204A (en) * | 2014-12-18 | 2015-04-08 | 佛山市源田床具机械有限公司 | Active type yarn breakage detector of quilter |
| CN106988037A (en) * | 2016-01-20 | 2017-07-28 | 天津宝盈电脑机械有限公司 | A kind of automatic wire agency |
| CN209383943U (en) * | 2018-12-07 | 2019-09-13 | 河北云织兰纺织科技有限公司 | A kind of quilter wire breakage detector |
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| JPH0157022B2 (en) * | 1985-11-12 | 1989-12-04 | Koichi Ootake | |
| CN1108711A (en) * | 1993-06-08 | 1995-09-20 | 株式会社铃木制作所 | Thread feeding device for sewing machines |
| DE19521116A1 (en) * | 1995-06-09 | 1996-12-12 | Altenburger Ind Naehmasch | Sewing machine automatic thread brake with good operator access |
| CN2679199Y (en) * | 2004-01-15 | 2005-02-16 | 张锡良 | Upper thread rereeling gear of quilter |
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| CN111593504A (en) | 2020-08-28 |
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Denomination of invention: A Kind of Quilting Machine Wire Feeding Structure Effective date of registration: 20230725 Granted publication date: 20210817 Pledgee: Laiwu branch of China Postal Savings Bank Co.,Ltd. Pledgor: Jinan Yifeng Textile Co.,Ltd. Registration number: Y2023980049657 |