Remaining thread take-up device for thread shuttle

Abstract

The utility model discloses a residual thread take-up device for a thread shuttle. The residual thread take-up device comprises a thread shuttle placer for placing the thread shuttle, a thread pulling part for pulling out a residual thread and a take-up part for collecting the residual thread, the stay wire component comprises a stay wire driving wheel, a stay wire driving driver, a stay wire driven wheel and a stay wire driven driver; the stay wire driven driver drives the stay wire driven wheel to move in the connecting line direction of the rotating center of the stay wire driven wheel and the rotating center of the stay wire driving wheel, the stay wire driven wheel abuts against the stay wire driving wheel so as to clamp the remaining wire end of the wire shuttle, and the stay wire driving driver drives the stay wire driving wheel to rotate so that the stay wire driving wheel can drive the stay wire driven wheel to rotate in the opposite direction. And the take-up part is used for collecting residual wires pulled out by the wire pulling driving wheel and the wire pulling driven wheel. According to the utility model, the stay wire driving wheel and the stay wire driven wheel rotate oppositely to pull out the residual wire, and the pulled-out residual wire is collected through the take-up part. According to the invention, the residual thread of the thread shuttle can be automatically removed and collected, so that the production efficiency is improved and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine technology, and in particular to a bobbin thread take-up device. Background Technology

[0002] Industrial sewing machines are designed for large-scale production of sewn workpieces in factories and other industrial sectors. These machines contain a bobbin with a bobbin case and a bobbin itself, on which thread is wound. Because the bobbin has a limited thread capacity, sewing must be stopped and the bobbin fully wound with thread replaced once the thread is exhausted. However, stopping sewing after the bobbin is completely empty often results in missed stitches, damaging the fabric or a section of thread, causing the thread to break and requiring the removal of the sewn portion. Therefore, in practice, industrial sewing machines need to be paused after a period of sewing to remove the bobbin case and bobbin from the rotary hook, completely remove any remaining thread from the bobbin, rewound the bobbin, and then reinstall the bobbin case and bobbin into the rotary hook to continue sewing. Currently, the method of manually removing excess thread and using a manual winding machine to fully wind the empty bobbin with thread has problems such as high labor intensity, low efficiency, and high labor costs, and can no longer meet the needs of industrialized assembly line production. Utility Model Content

[0003] This invention provides a device for taking in excess thread from a shuttle to solve the aforementioned technical problems.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A shuttle take-up device includes: a shuttle holder for placing the shuttle, a puller for pulling out excess thread, and a take-up device for collecting excess thread.

[0006] The wire pulling component includes: a wire pulling drive wheel, a wire pulling drive, a wire pulling driven wheel, and a wire pulling driven drive; the wire pulling driven drive drives the wire pulling driven wheel to move along the line connecting the rotation centers of the wire pulling driven wheel and the wire pulling drive wheel, the wire pulling driven wheel abuts against the wire pulling drive wheel to clamp the excess wire end of the shuttle, the wire pulling drive drives the wire pulling drive wheel to rotate, which in turn causes the wire pulling drive wheel to rotate in the opposite direction; the wire take-up component collects the excess wire pulled out by the wire pulling drive wheel and the wire pulling driven wheel.

[0007] Preferably, both the driving pulley and the driven pulley are gears, and the driving pulley and the driven pulley clamp the wire end after meshing.

[0008] Preferably, the cable driven actuator is a cylinder, which drives the cable driven wheel to move closer to and away from the cable driving wheel.

[0009] Preferably, the take-up component and the shuttle holder are respectively located on both sides of the line connecting the rotation centers of the driven pulley and the driving pulley; the take-up component includes a take-up tube and a vacuum generator for generating negative pressure in the take-up tube, with the take-up tube inlet end facing the driving pulley and the take-up tube outlet end connected to the vacuum generator.

[0010] Preferably, the side wall of the take-up tube is provided with a take-up groove extending to the inlet end of the take-up tube.

[0011] Preferably, it further includes a blowing component for blowing the wire end between the pulling drive wheel and the pulling driven wheel. The blowing component includes a blowing tube for blowing air. When the pulling driven wheel is separated from the pulling drive wheel, the vacuum generator outlet of the blowing tube faces between the pulling drive wheel and the pulling driven wheel.

[0012] Preferably, it also includes a mounting plate, on which the shuttle holder, the pull-out component, and the take-up component are mounted.

[0013] Preferably, the pull wire drive wheel and the pull wire driven wheel are located on the same side of the mounting plate, and the pull wire drive driver and the pull wire driven driver are mounted on the other side of the mounting plate; the pull wire component also includes a first pull wire shaft and a second pull wire shaft, and a first elongated hole is provided on the mounting plate along the line connecting the rotation centers of the pull wire driven wheel and the pull wire drive wheel, one end of the first pull wire shaft is connected to the pull wire drive driver, and the other end passes through the first elongated hole and is connected to the pull wire drive wheel, and one end of the second pull wire shaft is connected to the pull wire driven driver, and the other end passes through the first elongated hole and is connected to the pull wire driven wheel.

[0014] Preferably, the first elongated hole is countersunk at the edge facing the pull wire drive wheel, and the end faces of the pull wire drive wheel and the pull wire driven wheel facing the pull wire drive are located between the mounting plate surface on the side of the mounting plate away from the pull wire drive and the first countersunk plane of the countersunk process.

[0015] Preferably, the mounting plate is vertically arranged, and the rotation axes of the pull wire drive wheel and the pull wire driven wheel are perpendicular to the mounting plate.

[0016] Beneficial effects:

[0017] This application discloses a bobbin thread take-up device. The device clamps the excess thread end of the bobbin by having a driven pull wheel abut against a driving pull wheel. The driving and driven pull wheels of the pull mechanism rotate in opposite directions, pulling the excess thread and causing the bobbin to rotate within its sleeve, thus pulling out the excess thread. The take-up mechanism then collects the pulled-out excess thread. This application enables the automatic removal and collection of excess thread from the bobbin, thereby improving production efficiency and reducing production costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a shuttle wire take-up device disclosed in this utility model;

[0020] Figure 2 for Figure 1 A magnified view of a section of section I;

[0021] Figure 3 This is a partial schematic diagram from the main view of a wire shuttle take-up device disclosed in this utility model;

[0022] Figure 4 This is a top view of a wire shuttle take-up device disclosed in this utility model.

[0023] 52. Wire pulling assembly; 521. Wire pulling drive wheel; 522. Wire pulling drive actuator; 523. Wire pulling driven wheel; 524. Wire pulling driven actuator; 525. First wire pulling shaft; 526. Second wire pulling shaft; 53. Wire take-up assembly; 531. Wire take-up tube; 5311. Wire take-up groove; 532. Vacuum generator; 5322. Vacuum generator inlet; 5323. Vacuum generator outlet; 54. Wire blowing assembly; 541. Wire blowing tube; 61. Wire shuttle holder; 613. Positioning mandrel; 6131. ​​Mandrel groove; 614. Positioning bracket; 6141. Positioning opening;

[0024] 7. Shuttle; 71. Shuttle core sleeve; 713. Shuttle door base plate; 7131. Shuttle door base plate positioning hook;

[0025] 8. Mounting plate; 81. First elongated hole; 82. First countersinking plane; 83. Mounting plate surface. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] A shuttle take-up device for excess thread, combined with Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it includes: a shuttle holder 61 for placing the shuttle 7, a pull-out part 52 for pulling out excess thread, and a take-up part 53 for collecting excess thread; the pull-out part 52 includes: a pull-out drive wheel 521, a pull-out drive driver 522, a pull-out driven wheel 523, and a pull-out driven driver 524; the pull-out driven driver 524 drives the pull-out driven wheel 523 to move along the line connecting the rotation centers of the pull-out driven wheel 523 and the pull-out drive wheel 521, the pull-out driven wheel 523 abuts against the pull-out drive wheel 521 to clamp the excess thread end of the shuttle 7, the pull-out drive driver 522 drives the pull-out drive wheel 521 to rotate, thereby causing the pull-out drive wheel 521 to drive the pull-out driven wheel 523 to rotate in opposite directions; the take-up part 53 collects the excess thread pulled out by the pull-out drive wheel 521 and the pull-out driven wheel 523. This application uses a pull-pull driven driver 524 to drive the pull-pull driven wheel 523 closer to the pull-pull driven wheel 521. After the pull-pull driven wheel 523 abuts against the pull-pull driven wheel 521, it clamps the excess thread that falls between the two. Then, the pull-pull driven driver 522 drives the pull-pull driven wheel 521 to rotate, which in turn drives the pull-pull driven wheel 523 to rotate in the opposite direction. The relative rotation of the pull-pull driven wheel 521 and the pull-pull driven wheel 523 pulls the excess thread, causing the bobbin 72 to rotate within the bobbin sleeve 71, thereby pulling out the excess thread. Furthermore, a take-up component 53 is provided to collect the pulled-out excess thread. Therefore, this application can realize the automatic removal and collection of excess thread on the shuttle 7, thereby improving production efficiency and reducing production costs.

[0028] Preferably, both the pull drive wheel 521 and the pull driven wheel 523 are gears. After the pull drive wheel 521 and the pull driven wheel 523 mesh, they clamp the thread end. The meshing and rotation of the teeth pull the sewing thread, causing the bobbin 72 to rotate and release the thread, thereby achieving better thread pulling.

[0029] Preferably, the thread-driven actuator 524 is a cylinder, which has a simple operation and high reliability. The thread-driven actuator 524 drives the thread-driven wheel 523 to move closer to and away from the thread-driven drive wheel 521. When the thread-driven actuator 524 drives the thread-driven wheel 523 away from the thread-driven drive wheel 521, a certain gap is left between the thread-driven wheel 523 and the thread-driven drive wheel 521, allowing the thread end to fall into it; then the thread-driven actuator 524 drives the thread-driven wheel 523 to move closer to the thread-driven drive wheel 521 for engagement, thereby clamping the thread end, and then the thread-driven actuator 522 drives the thread-driven drive wheel 521 to rotate. First, the thread-driven wheel 523 is driven to move linearly by the cylinder, and then the thread-driven actuator 522 drives the thread-driven drive wheel 521 to rotate, which ensures that the thread end is collected by the take-up component 53 after clamping and will not become entangled on the thread-driven drive wheel 521 during rotation. Furthermore, the linear motion of the driven pulley 523 can prevent the teeth of the driven pulley 523 and the driving pulley 521 from meshing during rotation, which helps to improve service life.

[0030] Specifically, the pull wire active driver 522 uses a stepper motor, which drives the pull wire active wheel 521 to rotate.

[0031] Preferably, the take-up component 53 and the shuttle holder 61 are respectively located on both sides of the line connecting the rotation centers of the driven pull wheel 523 and the driving pull wheel 521, so that after the shuttle 7 is positioned by the shuttle holder 61, its thread end can fall between the driven pull wheel 523 and the driving pull wheel 521, and the take-up component 53 can easily collect the thread end. The take-up component 53 includes a take-up tube 531 and a vacuum generator 532 for generating negative pressure in the take-up tube 531. The inlet end of the take-up tube 531 faces the driving pull wheel 521, and the outlet end of the take-up tube is connected to the vacuum generator 532. The vacuum generator 532 generates negative pressure in the take-up tube 531, and the thread end is sucked in from the inlet end of the take-up tube 531 to prevent the sewing thread from being pulled out and wrapped around the driving pull wheel 521.

[0032] Preferably, the side wall of the take-up tube 531 is provided with a take-up groove 5311 extending to the inlet end of the take-up tube, so as to prevent the long wire end from getting stuck on the side wall of the take-up tube 531 and thus hindering the intake of the wire end.

[0033] Specifically, the take-up trough 5311 includes a beveled section at the inlet end of the take-up tube 531 and a long strip section along the take-up tube 531, so that the cable end can be reliably drawn into the take-up tube 531 under the action of suction.

[0034] Specifically, the vacuum generator 532 includes a vacuum generator inlet, a vacuum generator air inlet 5322, and a vacuum generator air outlet 5323. The vacuum generator air inlet 5322 is connected to the vacuum generator air supply pipe. Air enters the vacuum generator air supply pipe through the vacuum generator air inlet 5322 and exits through the vacuum generator air outlet 5323, thereby generating negative pressure. The take-up tube 531 has its take-up tube outlet connected to the vacuum generator inlet. After the thread end is sucked into the take-up tube 531, it enters the vacuum generator 532 through the vacuum generator inlet. The continuously pulled-out thread is discharged from the vacuum generator air outlet 5323 along with the airflow inside the vacuum generator 532. The vacuum generator air outlet 5323 is connected to the take-up air pipe to transport the excess thread to the collection box.

[0035] Preferably, the device further includes a blowing component 54 for blowing the thread end between the pull drive wheel 521 and the pull driven wheel 523. The blowing component 54 includes a blowing tube 541 for blowing air. When the pull driven wheel 523 is separated from the pull drive wheel 521, the vacuum generator outlet 5323 of the blowing tube 541 faces the space between the pull drive wheel 521 and the pull driven wheel 523. The blowing air through the blowing tube 541 guides the thread end, preventing the thread end from getting caught on the gear after the shuttle is placed in the shuttle holder 61. The blowing component 54 cooperates with the take-up component 53 to ensure that the thread end can reliably fall between the pull drive wheel 521 and the pull driven wheel 523.

[0036] Specifically, the blowing assembly 54 also includes a blowing tube mounting base, through which the blowing tube 541 is installed. The blowing tube inlet of the blowing tube 541 is connected to the blowing tube air supply pipe, and the airflow flows out from the blowing tube outlet and blows between the pulling drive wheel 521 and the pulling driven wheel 523.

[0037] Preferably, it also includes a mounting plate 8, on which the shuttle holder 61, the pull-out part 52, and the take-up part 53 are mounted.

[0038] Preferably, the pull wire drive wheel 521 and the pull wire driven wheel 523 are located on the same side of the mounting plate 8, i.e., the front side of the mounting plate 8; the pull wire drive driver 522 and the pull wire driven driver 524 are mounted on the other side of the mounting plate 8, i.e., the back side of the mounting plate 8; the pull wire component 52 also includes a first pull wire shaft 525 and a second pull wire shaft 526. The mounting plate 8 has a first elongated hole 81 along the line connecting the rotation centers of the pull wire driven wheel 523 and the pull wire drive wheel 521. One end of the first pull wire shaft 525 is connected to the pull wire drive driver 522, and the other end passes through the first elongated hole 81 and is coaxially fixed to the pull wire drive wheel 521. One end of the second pull wire shaft 526 is connected to the pull wire driven driver 524, and the other end passes through the first elongated hole 81 and is rotatably connected to the pull wire driven wheel 523. This arrangement makes the structure on the pull wire side simpler, which is beneficial for the layout of the structure, observation of the working process, and subsequent maintenance.

[0039] Specifically, the pull-wire driven driver 524 is fixed to the mounting plate 8 by a first set of mounting screws, the pull-wire active driver 522 is mounted on the pull-wire active driver mounting base by a second set of mounting screws, and the pull-wire active driver mounting base is fixed to the mounting plate 8 by a third set of mounting screws. The output end of the pull-wire active driver 522 passes through the clearance cavity of the pull-wire active driver mounting base and is connected to the first pull-wire shaft 525. The second pull-wire shaft 526 is threadedly connected to the push plate of the pull-wire driven driver 524. The push plate of the pull-wire driven driver 524 can enter the clearance cavity of the pull-wire active driver mounting base, allowing the first pull-wire shaft 525 and the second pull-wire shaft 526 to approach each other.

[0040] Preferably, the first elongated hole 81 is countersunk on the edge facing the pull-up drive wheel 521. The end faces of the pull-up drive wheel 521 and the pull-up driven wheel 523 facing the pull-up drive driver 522 are located between the mounting plate surface 83 on the side of the mounting plate 8 away from the pull-up drive driver 522 and the first countersunk surface 82. If the gear faces directly towards the mounting plate surface 83, a gap will be generated between the end of the gear and the mounting plate surface 83, and the wire end can easily fall into the gap, which is not conducive to the wire end being sucked into the take-up tube 531. The structure of this application can avoid this problem and ensure the smooth collection of excess wire.

[0041] Preferably, the mounting plate 8 is vertically arranged, and the rotation axes of the pull wire drive wheel 521 and the pull wire driven wheel 523 are perpendicular to the mounting plate 8, which facilitates the wire end hanging down between the pull wire drive wheel 521 and the pull wire driven wheel 523 under the action of gravity. In this embodiment, the line connecting the rotation axes of the pull wire drive wheel 521 and the pull wire driven wheel 523 is horizontally arranged.

[0042] Specifically, the shuttle placement device 61 includes a positioning mandrel 613 and a positioning bracket 614 fixed on the mounting plate 83. The positioning mandrel 613 is provided with a mandrel groove 6131, and the positioning bracket 614 is provided with a positioning opening 6141. The width of the positioning opening 6141 matches the positioning hook 7131 of the shuttle bottom plate 713 of the shuttle core sleeve 71 of the shuttle 7.

[0043] When the shuttle 7 is placed in the shuttle holder 61, the shuttle bottom plate 713 is locked in the spindle groove 6131, and the shuttle bottom plate positioning hook 7131 is located in the positioning opening 6141, thereby determining the center position and angular position of the shuttle 7 to ensure that the thread end is oriented between the pull drive wheel 521 and the pull driven wheel 523.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A thread take-up and thread take-off device, characterized in that include: A shuttle holder (61) for placing the shuttle (7), a puller (52) for pulling out excess thread, and a take-up member (53) for collecting excess thread; The wire pulling component (52) includes: a wire pulling drive wheel (521), a wire pulling drive driver (522), a wire pulling driven wheel (523), and a wire pulling driven driver (524); the wire pulling driven driver (524) drives the wire pulling driven wheel (523) to move along the line connecting the rotation centers of the wire pulling driven wheel (523) and the wire pulling drive wheel (521), the wire pulling driven wheel (523) abuts against the wire pulling drive wheel (521) to clamp the excess wire end of the shuttle (7), the wire pulling drive driver (522) drives the wire pulling drive wheel (521) to rotate, thereby causing the wire pulling drive wheel (521) to drive the wire pulling driven wheel (523) to rotate in opposite directions; the wire take-up component (53) collects the excess wire pulled out by the wire pulling drive wheel (521) and the wire pulling driven wheel (523).

2. A thread take-up / take-off device according to claim 1, characterized in that Both the pull wire drive wheel (521) and the pull wire driven wheel (523) are gears, and the pull wire drive wheel (521) and the pull wire driven wheel (523) clamp the wire end after meshing.

3. A thread take-up / take-off device according to claim 1, characterized in that The cable driven actuator (524) is a cylinder that drives the cable driven wheel (523) to move closer to and away from the cable driving wheel (521).

4. A thread take-up / take-off device according to claim 1, characterized in that The take-up component (53) and the shuttle holder (61) are respectively located on both sides of the line connecting the rotation centers of the driven pull wheel (523) and the driving pull wheel (521); the take-up component (53) includes a take-up tube (531) and a vacuum generator (532) for generating negative pressure in the take-up tube (531), with the inlet end of the take-up tube (531) facing the driving pull wheel (521) and the outlet end of the take-up tube connected to the vacuum generator (532).

5. A thread take-up / take-off device according to claim 4, characterized in that The side wall of the take-up tube (531) is provided with a take-up groove (5311) extending to the inlet end of the take-up tube.

6. A thread take-up / take-off device according to claim 1, wherein It also includes a blowing component (54) for blowing the wire end between the pull drive wheel (521) and the pull driven wheel (523), the blowing component (54) including a blowing tube (541) for blowing air, the vacuum generator outlet 5323 of the blowing tube (541) facing between the pull drive wheel (521) and the pull driven wheel (523) when the pull driven wheel (523) is separated from the pull drive wheel (521).

7. A thread take-up and thread collection device according to claim 1, characterized in that It also includes a mounting plate (8), on which the shuttle holder (61), the puller (52) and the take-up member (53) are mounted.

8. A thread take-up / take-off device according to claim 7, characterized in that The pull wire drive wheel (521) and pull wire driven wheel (523) are located on the same side of the mounting plate (8), and the pull wire drive driver (522) and pull wire driven driver (524) are mounted on the other side of the mounting plate (8). The pull wire component (52) also includes a first pull wire shaft (525) and a second pull wire shaft (526). The mounting plate (8) has a first elongated hole (81) along the line connecting the rotation centers of the pull wire driven wheel (523) and the pull wire drive wheel (521). One end of the first pull wire shaft (525) is connected to the pull wire drive driver (522), and the other end passes through the first elongated hole (81) and is connected to the pull wire drive wheel (521). One end of the second pull wire shaft (526) is connected to the pull wire driven driver (524), and the other end passes through the first elongated hole (81) and is connected to the pull wire driven wheel (523).

9. A thread take-up / take-off device according to claim 8, characterized in that The first elongated hole (81) is countersunk on the edge of the pull wire drive wheel (521) and the end faces of the pull wire drive wheel (521) and the pull wire driven wheel (523) facing the pull wire drive driver (522) are located between the mounting plate surface (83) of the mounting plate (8) away from the pull wire drive driver (522) and the first countersunk surface (82) of the countersunk process.

10. A thread take-up / take-off device according to claim 7, characterized in that The mounting plate (8) is vertically arranged, and the rotation axes of the pull wire drive wheel (521) and the pull wire driven wheel (523) are perpendicular to the mounting plate (8).

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