CN111424384A - Thread passing mechanism of double-needle single-station sewing machine - Google Patents
Thread passing mechanism of double-needle single-station sewing machine Download PDFInfo
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- CN111424384A CN111424384A CN202010233912.9A CN202010233912A CN111424384A CN 111424384 A CN111424384 A CN 111424384A CN 202010233912 A CN202010233912 A CN 202010233912A CN 111424384 A CN111424384 A CN 111424384A
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- 238000009958 sewing Methods 0.000 title claims abstract description 108
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 19
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 abstract description 14
- 230000000694 effects Effects 0.000 description 5
- 230000003111 delayed effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B55/00—Needle holders; Needle bars
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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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Abstract
The invention discloses a thread passing mechanism of a double-needle single-station sewing machine, wherein the double-needle single-station sewing machine is provided with a first needle and a second needle which both have a working state and a non-working state, the thread passing mechanism comprises a thread fixing unit and a stabilizing unit, the thread fixing unit is used for fixing a thread drawn by the first needle or the second needle in the non-working state, the stabilizing unit is used for stabilizing a sewing stitch of the first needle or the second needle in the working state, two needles can be arranged on a machine head of the sewing machine, only one station is arranged during working, namely only one needle can work, and the thread fixing unit is arranged to fix the bound thread when the needle thread is replaced for sewing; in addition, the stable unit is arranged, so that the tension control of the thread which executes sewing work is performed when the machine needle thread is replaced for sewing, the stitch of the thread sewn on the cloth surface is stably maintained, and the stitch is optimized.
Description
Technical Field
The invention belongs to the technical field of sewing equipment, and particularly relates to a thread passing mechanism of a double-needle single-station sewing machine.
Background
The traditional sewing machines are all single-needle sewing machines, so that multiple times of sewing is needed for cloth needing double-thread or multi-thread sewing, in order to improve sewing efficiency, various types of double-needle sewing machines are available on the market at present, the double-needle sewing machines generally carry out double-thread sewing by double needles simultaneously, double threads are parallel and mutually parallel after sewing, but the double needles are fixed to be sewn simultaneously, the distance between the double threads is generally equidistant after sewing, and for some unique special-shaped patterns, the double-needle sewing machines cannot be used for sewing, and have limitation in application; although the single-needle sewing machine is flexible to the unique special-shaped patterns, the efficiency is low, and when double-color double-thread sewing is needed, the sewing thread drawn by a needle can only be changed into another pattern, or the cloth can be directly transferred to another sewing machine with the needed pattern for sewing, and the efficiency of any scheme is low.
Because the rotating shuttle in the sewing machine rotates in the clockwise direction, when the cloth moves in the conventional sewing direction, the stitch on the cloth can be called as a forward stitch, when the cloth is sewn in the reverse direction, the rotating shuttle still rotates in the clockwise direction, and at the moment, the stitch on the cloth is called as a reverse stitch, so that the tension of the sewing thread needs to be effectively controlled no matter the sewing is performed in the forward direction or the reverse direction, for example, the poor stitch conditions such as poor knot and take-up caused by too small tension of the sewing thread can be caused; if the tension is too large, stitch defects such as stitch skipping, thread breakage, pattern deviation and the like can occur, and especially when the cloth is sewn in a reverse motion or in a special shape except a straight shape, the tension of the needle point is difficult to stably control.
The existing double-needle single-station sewing machine is characterized in that two machine needles are arranged on a machine head of the existing double-needle single-station sewing machine, the two machine needles can respectively pull stitches with different colors, only one machine needle can perform sewing work when sewing is performed, the other machine needle is kept still, when a color stitch needs to be changed for sewing, the sewing machine can be switched to the other machine needle for sewing without changing the stitches, and a piece of cloth needs not to be changed for sewing.
Disclosure of Invention
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a line mechanism crosses of two needles simplex position sewing machine, two needles simplex position sewing machine has first eedle and second eedle, and first eedle and second eedle all have operating condition and non-operating condition, when first eedle is in operating condition, then the second eedle is in non-operating condition, when the second eedle is in operating condition, then first eedle is in non-operating condition, cross the line mechanism and carry out the line fixing unit that fixes including being used for the suture of first eedle or second eedle traction that is in non-operating condition, be used for making the stitch seam of first eedle or second eedle that is in operating condition and carry out stable stabilizing unit.
Preferably, the stabilizing unit comprises a tension control mechanism for controlling tension of a suture drawn by the first needle or the second needle in the working state, the tension control mechanism comprises a first supporting seat, a first clamping component arranged on the first supporting seat and used for clamping or loosening the suture drawn by the first needle in the working state so as to adjust the tension of the suture, a second clamping component arranged on the first supporting seat and used for clamping or loosening the suture drawn by the second needle in the working state so as to adjust the tension of the suture, and a first driving component arranged on the first supporting seat and driving the first clamping component and the second clamping component to move.
Preferably, first centre gripping subassembly and second centre gripping subassembly all include first clamping piece and the second clamping piece that can draw close the back each other and support to press and carry the suture, and first clamping piece is fixed to be set up, and the setting of the relative first clamping piece activity of second clamping piece.
Preferably, the first driving assembly includes a first pressing piece capable of pressing against the second clamping piece, a first pressing seat fixed on the first supporting seat, a first elastic piece arranged between the first pressing piece and the first pressing seat and tending to push the first pressing piece to approach the second clamping piece, and a first pushing assembly tending to push the first pressing piece away from the second clamping piece.
Preferably, the stabilizing unit further comprises an auxiliary mechanism for thread tension control of the auxiliary tension control mechanism, the auxiliary mechanism being located upstream of the tension control mechanism in the thread feeding direction of the sewing machine.
Preferably, the auxiliary mechanism comprises a second supporting seat, a third clamping assembly arranged on the second supporting seat and used for clamping or loosening the suture pulled by the first machine needle in the working state so as to adjust the tension of the suture, a fourth clamping assembly arranged on the second supporting seat and used for clamping or loosening the suture pulled by the second machine needle in the working state so as to adjust the tension of the suture, and a second driving assembly arranged on the second supporting seat and driving the third clamping assembly and the fourth clamping assembly to move.
Preferably, third clamping component and fourth clamping component all include third clamping piece and the fourth clamping piece that can draw close the back each other and support to press and carry the suture, and the fixed setting of third clamping piece, the setting of the relative third clamping piece activity of fourth clamping piece.
Preferably, the second driving assembly includes a second pressing piece capable of pressing against the fourth clamping piece, a second pressing seat fixed on the second supporting seat, a second elastic piece arranged between the second pressing piece and the second pressing seat and tending to push the second pressing piece to approach the fourth clamping piece, and a second pushing assembly tending to push the second pressing piece away from the fourth clamping piece.
Preferably, the second supports the preforming, the second supports presses the seat, the second elastic component is equallyd divide and is provided with two respectively, the second top pushes away the subassembly including passing third clamping piece and fourth clamping piece and a tip supports the second thimble that one side of keeping away from the second elastic component of preforming inconsistent, the wobbling plectrum of locating on the second supporting seat, the other end of second thimble is fixed on the plectrum, the top pushes away the subassembly still includes the wobbling driving cylinder of drive plectrum, the extending direction of the power output shaft of driving cylinder is perpendicular to the plane of plectrum place.
Preferably, the thread fixing unit is located between the stabilizing unit and the needle in the thread feeding direction of the sewing machine, and the thread fixing unit comprises a fixed seat, a first fixing mechanism arranged on the fixed seat and used for fixing a thread drawn by a first needle in a non-working state, and a second fixing mechanism arranged on the fixed seat and used for fixing a thread drawn by a second needle in a non-working state.
Compared with the prior art, the invention has the advantages that:
according to the thread passing mechanism of the double-needle single-station sewing machine, the machine head of the sewing machine can be provided with two machine needles, but only one station is arranged during working, namely only one machine needle can work, and the thread fixing unit is arranged, so that the suture which is finished and sewn is fixed when the machine needle suture is replaced and the suture can be fixed no matter which set of sewing work of two sets of machine needle sutures; in addition, the stable unit is arranged, so that the tension control of the thread which executes the sewing work is carried out when the machine needle thread is replaced for sewing, the stitch which is sewed on the cloth surface is stably maintained, the stitch is optimized, and the stitch can be optimized no matter which set of the two sets of machine needle threads performs the sewing work.
Furthermore, the thread passing mechanism of the double-needle single-station sewing machine comprises a tension control mechanism and an auxiliary mechanism in a stabilizing unit, wherein the tension control mechanism can automatically optimize forward and conventional stitches, and the auxiliary mechanism can assist the tension control mechanism to control the tension of the advancing thread when the sewing machine performs reverse sewing or special-shaped sewing, so that the condition that the tension of the thread cannot be effectively controlled by the tension control mechanism during the reverse sewing and the special-shaped sewing is avoided, and the effect of optimizing the reverse stitch and the special-shaped stitch is achieved during the reverse sewing and the special-shaped sewing. The situations of poor knotting and take-up caused by too small tension of the suture and the situations of needle skipping, broken threads, pattern deviation and the like caused by too large tension are avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic perspective view of a double-needle single-station sewing machine and a thread passing mechanism thereon according to the present invention;
FIG. 2 is a schematic perspective view of the wire fixing unit according to the present invention (the first fixing mechanism is exploded);
FIG. 3 is a schematic perspective view of the tension control mechanism of the present invention;
FIG. 4 is a schematic perspective view of the auxiliary mechanism of the present invention;
FIG. 5 is a schematic perspective view of the auxiliary mechanism of the present invention (after being exploded);
wherein: 10. a wire fixing unit; 11. a fixed seat; 12. a cylinder; 13. connecting sleeves; 130. a wire passing hole; 14. pressing the screw; 20. a tension control mechanism; 200. a first support base; 21. a first clip piece; 22. a second clip; 23. a first elastic member; 24. a first abutting seat; 25. a first thimble; 26. a top block; 27. a top rod; 30. an auxiliary mechanism; 300. a second support seat; 31. a third clip piece; 32. a fourth clip piece; 33. a second pressing sheet; 34. a second elastic member; 35. a second abutting seat; 36. a second thimble; 37. a shifting sheet; 38. a drive cylinder; 40. a detection unit; 41. a support plate; 42. a detection element; 50. a thread hooking device; z1, first needle; z2, second needle.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not a whole embodiment. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 5, the thread passing mechanism of the double-needle single-station sewing machine comprises a first needle Z1 and a second needle Z2, wherein the first needle Z1 and the second needle Z2 both have a working state and a non-working state, when the first needle Z1 is in the working state, the second needle Z2 is in the non-working state, and when the second needle Z2 is in the working state, the first needle Z1 is in the non-working state, the thread passing mechanism comprises a thread fixing unit 10 for fixing a thread drawn by the first needle Z1 or the second needle Z2 in the non-working state, a stabilizing unit for stabilizing a stitch of the first needle Z1 or the second needle Z2 in the working state, and a detecting unit 40 for detecting whether the first needle Z1 or the second needle Z2 in the working state is broken or fallen.
Specifically, the thread fixing unit 10 is located between the stabilizing unit and the needle in the thread feeding direction of the sewing machine, and the thread fixing unit 10 includes a fixing seat 11, a first fixing mechanism arranged on the fixing seat 11 and used for fixing a thread drawn by the first needle Z1 in a non-working state, and a second fixing mechanism arranged on the fixing seat 11 and used for fixing a thread drawn by the second needle Z2 in a non-working state.
The first fixing mechanism comprises a connecting sleeve 13 fixed on the fixing seat 11, an air cylinder 12 arranged on the inner periphery of the connecting sleeve 13 and a pressing screw 14 arranged at one end part of the inner periphery of the connecting sleeve 13, wherein a thread passing hole 130 penetrating through the connecting sleeve 13 along the radial direction is formed in the connecting sleeve 13, and a thread drawn by a first machine needle Z1 passes through the thread passing hole 130; when the first machine needle Z1 is in a working state and is sewn by the second machine needle Z2, a suture drawn on the first machine needle Z1 needs to be cut off (the position where the suture is connected with a cloth surface is cut off), the free end of the cut suture is hooked by the suture hooking device 5050, the rear side of the suture is fixed by the first fixing mechanism, when the suture is fixed, the output shaft of the air cylinder 12 is ejected out to enable the suture passing through the thread passing hole 130 to abut against the pressing screw 14, the suture is fixed and cannot freely move, and the suture is prevented from being loosened to the needle point in a large range due to the conditions of rear looseness, machine operation vibration and the like when a sewing task is not performed.
The second fixing mechanism is used for fixing the cut suture when the second needle Z2 finishes the working state and is sewn by the first needle Z1, and the specific structural arrangement of the second fixing mechanism is completely the same as that of the first fixing mechanism, and the detailed description is omitted here.
Further, the stabilizing unit comprises a tension control mechanism 20 for controlling the tension of the suture drawn by the first needle Z1 or the second needle Z2 in the working state, wherein the tension control mechanism 20 comprises a first supporting seat 200, a first clamping component arranged on the first supporting seat 200 and used for clamping or loosening the suture drawn by the first needle Z1 in the working state to adjust the tension of the suture, a second clamping component arranged on the first supporting seat 200 and used for clamping or loosening the suture drawn by the second needle Z2 in the working state to adjust the tension of the suture, and a first driving component arranged on the first supporting seat 200 and used for driving the first clamping component and the second clamping component to act. Further, the stabilizing unit further includes an auxiliary mechanism 30 for performing thread tension control for the auxiliary tension control mechanism 20, the auxiliary mechanism 30 being located upstream of the tension control mechanism 20 in the thread feeding direction of the sewing machine. The auxiliary mechanism 30 includes a second supporting seat 300, a third clamping assembly disposed on the second supporting seat 300 for clamping or releasing the suture thread drawn by the first needle Z1 in the working state to adjust the tension thereof, a fourth clamping assembly disposed on the second supporting seat 300 for clamping or releasing the suture thread drawn by the second needle Z2 in the working state to adjust the tension thereof, and a second driving assembly disposed on the second supporting seat 300 for driving the third clamping assembly and the fourth clamping assembly to move.
Before the sewing machine is operated, the products in the same batch are controlled according to the corresponding control program compiled according to the sewing track of the cloth, and when the tension control mechanism 20 and the auxiliary mechanism 30 carry out tension control, the tension control mechanism operates according to the corresponding control program control so as to control the tension of the sewing thread.
The tension control mechanism 20 can maintain the stability of the forward and conventional stitches by controlling the tension of the stitches, and optimize the stitches, but when the tension control mechanism 20 faces the reverse stitches, especially the irregular stitches, the control of the tension control mechanism 20 cannot be timely, so that the tension control is delayed, and the problem of poor stitches still occurs.
Therefore, when the sewing machine sews the cloth in a reverse direction or in a special shape except a straight line shape, the sewing machine can carry out primary control through the tension control mechanism 20 and further carry out secondary tension control on the sewing thread by matching with the auxiliary mechanism 30, thereby effectively avoiding the condition of poor stitch due to the delayed tension control caused by the untimely control of the tension control mechanism 20 and obviously optimizing the stitch.
In this example, the first clamping assembly and the second clamping assembly both include a first clamping piece 21 and a second clamping piece 22 that can be close to each other and then abut against and clamp the suture, the first clamping piece 21 is fixed, and the second clamping piece 22 is movable relative to the first clamping piece 21. The first driving assembly comprises a first pressing sheet capable of pressing against the second clamping sheet 22, a first pressing seat 24 fixed on the first supporting seat 200, a first elastic member 23 arranged between the first pressing sheet and the first pressing seat 24 and tending to push the first pressing sheet to approach the second clamping sheet 22, and a first pushing assembly tending to push the first pressing sheet to be far away from the second clamping sheet 22. The first pressing sheet, the first pressing base 24 and the first elastic piece 23 are respectively provided with two parts, the first pushing component comprises two first ejector pins 25 which respectively penetrate through the first clamping sheets 21 and the second clamping sheets 22 and one end of each first pushing component is abutted to one side, far away from the first elastic piece 23, of each first pressing sheet, a top block 26 fixed to the other ends of the two first ejector pins 25 and a top rod 27 connected to the top block 26, and the top rod 27 is connected with an electromagnetic valve of the sewing machine.
In addition, third clamping component and fourth clamping component all include and can draw close the back each other and support and press and carry the third clamping piece 31 and the fourth clamping piece 32 of suture, and third clamping piece 31 is fixed to be set up, and the setting of the relative third clamping piece 31 activity of fourth clamping piece 32. The second driving assembly includes a second pressing piece 33 capable of pressing against the fourth clamping piece 32, a second pressing base 35 fixed on the second support base 300, a second elastic piece 34 disposed between the second pressing piece 33 and the second pressing base 35 and tending to push the second pressing piece 33 towards the fourth clamping piece 32, and a second pushing assembly tending to push the second pressing piece 33 away from the fourth clamping piece 32. The second pressing piece 33, the second pressing base 35 and the second elastic piece 34 are respectively provided with two, the second pushing component comprises a second thimble 36 which penetrates through the third clamping piece 31 and the fourth clamping piece 32 and one end of which is abutted against one side of the second pressing piece 33, which is far away from the second elastic piece 34, and a shifting piece 37 which is arranged on the second supporting base 300 in a swinging manner, the other end of the second thimble 36 is fixed on the shifting piece 37, the pushing component further comprises a driving cylinder 38 (only one driving cylinder 38 is arranged) which drives the shifting piece 37 to swing, and the extension direction of a power output shaft of the driving cylinder 38 is perpendicular to the plane of the shifting piece 37. The pick 37 is not completely attached to the second support 300, but has a space, so that the pick 37 can swing on the second support 300 through two pivots.
When tension control is carried out on the suture, the first clamping piece 21 and the second clamping piece 22 are frequently close to or far away from each other, the suture is clamped when the first clamping piece is close to the second clamping piece, and the suture is loosened when the first clamping piece is far away from the second clamping piece; in a normal state, the first elastic piece 23 always pushes the first pressing piece, the first pressing piece forces the second clamping piece 22 to be tightly pressed against the first clamping piece 21, the suture is clamped, when the suture needs to be loosened, the electromagnetic valve of the sewing machine can push the ejector rod 27, the ejector rod 27 pushes the ejector block 26, the ejector block 26 can simultaneously push the two first ejector pins 25, the two first ejector pins 25 overcome the thrust of the first elastic piece 23 to push the two corresponding first pressing pieces to be far away from the second clamping piece 22, at the moment, the second clamping piece 22 and the first clamping piece 21 are not tightly pressed, the suture is further loosened, and when the suture needs to be clamped, all the parts move reversely.
When tension control is performed on the suture, the third clamping piece 31 and the fourth clamping piece 32 are also frequently close to or far away from each other, the suture is clamped when the third clamping piece is close to the fourth clamping piece, and the suture is loosened when the third clamping piece is far away from the fourth clamping piece; in a normal state, the second elastic member 34 always pushes the second pressing piece 33, the second pressing piece 33 forces the fourth clamping piece 32 to tightly press against the third clamping piece 31, and the suture is clamped; when the thread needs to be loosened, the telescopic rod of the driving cylinder 38 extends out, the shifting piece 37 deflects to drive the two second ejector pins 36 on the shifting piece to move, the two second ejector pins 36 push the two corresponding second pressing pieces 33 to overcome the thrust of the second elastic piece 34, so that the second pressing pieces 33 are respectively far away from the corresponding fourth clamping pieces 32, at the moment, the fourth clamping pieces 32 are not pressed against the third clamping pieces 31, the thread is loosened, and when the thread needs to be clamped, all the parts move reversely.
The tension control mechanism 20 and the auxiliary mechanism 30 are mainly used for the suture pulled by the first needle Z1 or the second needle Z2 in the working state, namely, the suture which is only used for controlling one of the two moving sutures, but when the suture is clamped or loosened, the two clamping components in each mechanism clamp or loosen the two sutures at the same time, while the other suture is not moved and is in the non-working state, so that the clamping or loosening of the suture does not affect the sewing work.
In this embodiment, the detecting unit 40 includes two detecting elements 42, the supporting plate 41 is disposed on the supporting plate 41, each of the two detecting elements 42 has a passage for passing the sewing thread, when the sewing thread is broken or the sewing thread on the needle pillow falls off, the sewing thread in the passage will not move, the detecting element 42 will find that the sewing thread is not in the normal sewing process, and an abnormality occurs, and at this time, the system can control the sewing mechanism to stop operation, so as to avoid loss.
In conclusion, the thread passing mechanism of the double-needle single-station sewing machine can be provided with two needles on the machine head of the sewing machine, but only one station is arranged during the work, namely only one needle can work, and the thread fixing unit is arranged, so that the suture which is finished and sewn can be fixed when the needle suture is replaced and the suture can be fixed no matter which set of sewing work of the two sets of needle sutures; in addition, the stable unit is arranged, so that the tension control of the thread which executes the sewing work is carried out when the machine needle thread is replaced for sewing, the stitch which is sewed on the cloth surface is stably maintained, the stitch is optimized, and the stitch can be optimized no matter which set of the two sets of machine needle threads performs the sewing work.
Furthermore, the thread passing mechanism of the double-needle single-station sewing machine comprises a tension control mechanism and an auxiliary mechanism in a stabilizing unit, wherein the tension control mechanism can automatically optimize forward and conventional stitches, and the auxiliary mechanism can assist the tension control mechanism to control the tension of the advancing thread when the sewing machine performs reverse sewing or special-shaped sewing, so that the condition that the tension of the thread cannot be effectively controlled by the tension control mechanism during the reverse sewing and the special-shaped sewing is avoided, and the effect of optimizing the reverse stitch and the special-shaped stitch is achieved during the reverse sewing and the special-shaped sewing. The situations of poor knotting and take-up caused by too small tension of the suture and the situations of needle skipping, broken threads, pattern deviation and the like caused by too large tension are avoided.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
Claims (10)
1. The utility model provides a two needle simplex position sewing machine's line mechanism of crossing which characterized in that: the double-needle single-station sewing machine is provided with a first needle and a second needle, the first needle and the second needle are both provided with a working state and a non-working state, when the first needle is in the working state, the second needle is in the non-working state, when the second needle is in the working state, the first needle is in the non-working state, and the thread passing mechanism comprises a thread fixing unit used for fixing a thread drawn by the first needle or the second needle in the non-working state and a stabilizing unit used for stabilizing a sewing stitch of the first needle or the second needle in the working state.
2. The thread passing mechanism of the double-needle single-station sewing machine according to claim 1, characterized in that: the stabilizing unit includes that the tension to the trailing suture of first needle or the second needle that is in operating condition carries out the tension control mechanism that controls, tension control mechanism includes first supporting seat, locates be used for on the first supporting seat to carry out the centre gripping or loosen with adjusting its tensile first centre gripping subassembly, locate to the trailing suture of the second needle that is in operating condition on the first supporting seat be used for carrying out the centre gripping or loosen with adjusting its tensile second centre gripping subassembly, locate to the trailing suture of the second needle that is in operating condition on the first supporting seat and drive first drive assembly of first centre gripping subassembly and second centre gripping subassembly action.
3. The thread passing mechanism of the double-needle single-station sewing machine according to claim 2, characterized in that: the first clamping assembly and the second clamping assembly respectively comprise a first clamping piece and a second clamping piece which can be mutually closed and then abut against and clamp a suture, the first clamping piece is fixedly arranged, and the second clamping piece is opposite to the first clamping piece in a movable manner.
4. The thread passing mechanism of the double-needle single-station sewing machine according to claim 3, characterized in that: the first driving assembly comprises a first pressing piece capable of being pressed and drawn close to the second clamping piece, a first pressing seat fixed on the first supporting seat, a first elastic piece arranged between the first pressing piece and the first pressing seat and tending to push the first pressing piece to draw close to the second clamping piece, and a first pushing assembly tending to push the first pressing piece to be far away from the second clamping piece.
5. The thread passing mechanism of the double-needle single-station sewing machine according to claim 2, characterized in that: the stabilizing unit further includes an auxiliary mechanism for assisting the tension control mechanism in thread tension control, the auxiliary mechanism being located upstream of the tension control mechanism in a thread feeding direction of the sewing machine.
6. The thread passing mechanism of the double-needle single-station sewing machine according to claim 5, characterized in that: the auxiliary mechanism comprises a second supporting seat, a third clamping assembly, a fourth clamping assembly and a second driving assembly, wherein the third clamping assembly is arranged on the second supporting seat and used for clamping or loosening a suture pulled by a first needle in a working state so as to adjust the tension of the suture, the fourth clamping assembly is arranged on the second supporting seat and used for clamping or loosening the suture pulled by the second needle in the working state so as to adjust the tension of the suture, and the second driving assembly is arranged on the second supporting seat and drives the third clamping assembly and the fourth clamping assembly to move.
7. The thread passing mechanism of the double-needle single-station sewing machine according to claim 6, characterized in that: the third clamping assembly and the fourth clamping assembly comprise a third clamping piece and a fourth clamping piece which can be mutually closed and then abut against and clamp a suture, the third clamping piece is fixedly arranged, and the fourth clamping piece is opposite to the third clamping piece in a movable manner.
8. The thread passing mechanism of the double-needle single-station sewing machine according to claim 7, characterized in that: the second driving assembly comprises a second pressing sheet capable of pressing and approaching the fourth clamping sheet, a second pressing seat fixed on the second supporting seat, a second elastic piece arranged between the second pressing sheet and the second pressing seat and tending to push the second pressing sheet to approach the fourth clamping sheet, and a second pushing assembly tending to push the second pressing sheet to be far away from the fourth clamping sheet.
9. The thread passing mechanism of the double-needle single-station sewing machine according to claim 8, characterized in that: the second supports the preforming, the second supports presses seat, second elastic component and equallys divide and is provided with two respectively, the second pushes away the subassembly including passing third clamping piece and fourth clamping piece and a tip with the second supports the second thimble that one side inconsistent kept away from second elastic component of preforming, wobbling locating plectrum on the second supporting seat, the other end of second thimble is fixed on the plectrum, push away the subassembly still including the drive cylinder of plectrum wobbling, the extending direction of the power output shaft of drive cylinder is perpendicular to the plane in which the plectrum is located.
10. The thread passing mechanism of the double-needle single-station sewing machine according to claim 1, characterized in that: the thread fixing unit is located between the stabilizing unit and the needle in the thread inlet direction of the sewing machine, and comprises a fixed seat, a first fixing mechanism and a second fixing mechanism, wherein the first fixing mechanism is arranged on the fixed seat and used for fixing a thread drawn by a first needle in a non-working state, and the second fixing mechanism is arranged on the fixed seat and used for fixing a thread drawn by a second needle in a non-working state.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010233912.9A CN111424384A (en) | 2020-03-30 | 2020-03-30 | Thread passing mechanism of double-needle single-station sewing machine |
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| CN202010233912.9A CN111424384A (en) | 2020-03-30 | 2020-03-30 | Thread passing mechanism of double-needle single-station sewing machine |
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| CN111424384A true CN111424384A (en) | 2020-07-17 |
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| JPH07124362A (en) * | 1993-11-09 | 1995-05-16 | Juki Corp | Two-needle sewing machine |
| KR20090011358U (en) * | 2008-05-02 | 2009-11-05 | 썬스타 특수정밀 주식회사 | Sewing head of chenille embroidery machine |
| CN201343634Y (en) * | 2008-12-09 | 2009-11-11 | 中国标准缝纫机公司上海惠工缝纫机三厂 | Auxiliary thread clamping mechanism for sewing machine |
| CN203668657U (en) * | 2013-12-31 | 2014-06-25 | 西安标准工业股份有限公司 | Sewing machine with automatic thread clipping function |
| CN104862888A (en) * | 2015-06-09 | 2015-08-26 | 宁波舒普机电科技有限公司 | Sewing machine with thread clamping structure |
| CN205975001U (en) * | 2016-08-29 | 2017-02-22 | 浙江川田缝纫机有限公司 | Sewing machine protection device that breaks |
| CN209873321U (en) * | 2019-03-13 | 2019-12-31 | 台州市椒江嘉宏缝纫机厂 | Wire break induction device |
| CN212270402U (en) * | 2020-03-30 | 2021-01-01 | 苏州翰德利机电科技有限公司 | Thread passing mechanism of double-needle single-station sewing machine |
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2020
- 2020-03-30 CN CN202010233912.9A patent/CN111424384A/en active Pending
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| JPH07124362A (en) * | 1993-11-09 | 1995-05-16 | Juki Corp | Two-needle sewing machine |
| KR20090011358U (en) * | 2008-05-02 | 2009-11-05 | 썬스타 특수정밀 주식회사 | Sewing head of chenille embroidery machine |
| CN201343634Y (en) * | 2008-12-09 | 2009-11-11 | 中国标准缝纫机公司上海惠工缝纫机三厂 | Auxiliary thread clamping mechanism for sewing machine |
| CN203668657U (en) * | 2013-12-31 | 2014-06-25 | 西安标准工业股份有限公司 | Sewing machine with automatic thread clipping function |
| CN104862888A (en) * | 2015-06-09 | 2015-08-26 | 宁波舒普机电科技有限公司 | Sewing machine with thread clamping structure |
| CN205975001U (en) * | 2016-08-29 | 2017-02-22 | 浙江川田缝纫机有限公司 | Sewing machine protection device that breaks |
| CN209873321U (en) * | 2019-03-13 | 2019-12-31 | 台州市椒江嘉宏缝纫机厂 | Wire break induction device |
| CN212270402U (en) * | 2020-03-30 | 2021-01-01 | 苏州翰德利机电科技有限公司 | Thread passing mechanism of double-needle single-station sewing machine |
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