Rotating shuttle box for leather sewing machine capable of rotating freely

Abstract

The utility model relates to the technical field of sewing and processing of automobile seats and automobile interiors, and discloses a rotating shuttle box for a leather sewing machine capable of rotating freely, which mainly comprises a lower rotating table device, a transmission device, a tensioning device, a thread clamping device, a sensing device I, a sensing device II, a rotating shuttle device, a rotating shuttle box body and an adapter plate. The lower rotating table device is connected with the lower end of the rotating shuttle box body; the transmission device is connected with the rotating shuttle box body and the adapter plate; the tensioning device is connected with the rotating shuttle box body; the thread clamping device is connected with the rotating shuttle box body through an adapter plate; the sensing device I is connected with the transmission device; the sensing device II is connected with the lower rotating table device and the rotating shuttle box body; and the rotating shuttle device is connected with the transmission device. By means of the design, sewing of lines in any direction is achieved, the rotating speed of the rotating shuttle is higher, working efficiency and product quality are greatly improved, operation is easy and convenient, and maintenance cost is low.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat and automotive interior sewing technology, and is mainly applied to the sewing of leather materials. Specifically, it relates to a rotary hook box for a leather sewing machine that can rotate at will. Background Technology

[0002] In the field of industrial sewing equipment, the rotary hook, as the core component for achieving stitch weaving, directly determines sewing efficiency, stitch quality, and the applicability of the equipment. Traditional rotary hook structures (such as horizontal and vertical rotary hooks) mainly rely on unidirectional rotation drive mechanisms and mechanical transmission systems, which have the following technical bottlenecks:

[0003] 1. Speed ​​limitation: Due to the mechanical inertia and friction loss of gear and cam transmission systems, the maximum speed of traditional rotary hooks is usually limited, making it difficult to break through the efficiency ceiling in high-speed sewing scenarios.

[0004] 2. Limited Direction Control: Traditional rotary hooks rely on a fixed transmission path with a preset rotation direction (clockwise or counterclockwise), which cannot achieve dynamic direction switching during a single sewing process. This results in complex stitches (such as spiral stitches and multi-directional corner stitches) requiring frequent machine stops for adjustment, significantly reducing processing continuity.

[0005] 3. High mechanical complexity and maintenance costs: The transmission chain contains redundant components such as multi-stage gear sets and clutches. Long-term high-speed operation can easily lead to component wear and lubrication failure, which in turn leads to an increase in wire skipping and breakage rates, and increases the frequency of equipment maintenance.

[0006] Therefore, in response to the above-mentioned technical pain points, a rotary shuttle box system that can rotate arbitrarily and work efficiently was designed. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a rotary hook box for a leather sewing machine with arbitrary rotation. Compared with the traditional sewing machine rotary hook, this device can realize sewing of any direction and line. The rotary hook rotation speed is higher, which greatly improves work efficiency and product quality. It is also easy to operate and has low maintenance cost.

[0008] The objective of this utility model is achieved through the following technical solution:

[0009] A rotary hook box for a leather sewing machine with arbitrary rotation, the overall structure includes: a lower rotating table device, a transmission device, a tensioning device, a thread clamping device, a first sensing device, a second sensing device, a rotary hook device, a rotary hook box body, and an adapter plate.

[0010] The lower rotary table device is connected to the lower end of the shuttle box;

[0011] The aforementioned transmission device is connected to the shuttle box and the adapter plate;

[0012] The tensioning device is connected to the rotary shuttle box;

[0013] The wire clamping device is connected to the rotary hook box via an adapter plate;

[0014] The aforementioned sensing device is connected to the transmission device;

[0015] The second sensing device is connected to the lower rotary table device and the shuttle box;

[0016] The rotary shuttle device is connected to the transmission device.

[0017] The lower rotary table device includes: a motor, a shuttle box mounting plate, a turntable, a slip ring mounting seat, a slip ring holder, a clamping plate, and a slip ring.

[0018] The motor is fixedly mounted on the turntable, and drives the turntable to rotate.

[0019] The turntable is connected to the shuttle box, and the rotation of the turntable drives the rotation of the shuttle box, thereby achieving synchronous rotation with the sewing machine head.

[0020] The slip ring is connected to the slip ring mounting base;

[0021] The slip ring holder is connected to the card plate and the shuttle box mounting plate, and the card plate drives the slip ring to rotate.

[0022] The transmission device includes: motor 2, synchronous pulley 1, synchronous belt, adjustable bearing housing, drive shaft 1, bearing, bearing housing, bearing mounting base, coupling, rotary converter, synchronous pulley 2, and drive shaft 2.

[0023] The second motor is fixedly mounted on the shuttle box to provide power;

[0024] The first synchronous pulley is fixed to the second motor via a key connection and a set screw;

[0025] The second synchronous pulley is connected to the first drive shaft via a set screw;

[0026] The synchronous belt engages with synchronous pulley one and synchronous pulley two for transmission.

[0027] The bearing housing and bearing mounting base are fixedly installed on the rotary shuttle box;

[0028] There are two adjustable bearing seats, which are fixedly installed on the bearing seat and the bearing mounting seat, respectively;

[0029] The bearing housing, bearing mounting base, and adjustable bearing housing mounting holes are grooves, which are intended to solve the problem of misalignment during installation caused by machining errors and facilitate debugging and installation.

[0030] The drive shaft is connected to the bearing, synchronous pulley one, synchronous pulley two, and coupling.

[0031] The second drive shaft is connected to a coupling and a rotary converter. The first drive shaft and the second drive shaft are connected by the coupling to transmit power.

[0032] The rotary converter is connected to the rotary shuttle box via an adapter plate. It is one of the core components of this device. Its function is to change the vertical rotation transmitted to horizontal rotation, thereby driving the rotary shuttle device and providing a higher rotation speed to improve work efficiency.

[0033] The tensioning device includes: a pulley tensioning plate, a tensioning pulley mounting base, a tensioning pulley shaft, and an idler pulley.

[0034] The pulley tensioning plate and tensioning wheel mounting seat are fixedly installed on the shuttle box to adjust the position of the idler wheel.

[0035] The idler pulley is connected to the tensioner mounting base via the tensioner shaft. After the tensioning pressure plate of the pulley is adjusted, the synchronous belt is tensioned, thereby achieving a smooth transmission.

[0036] The wire clamping device includes: a pneumatic wire hooking base, a slide cylinder, a pneumatic finger mounting plate, wire clamping pliers, and a clamping claw cylinder.

[0037] The slide cylinder is connected to the shuttle box via a pneumatic hook base, and serves to adjust the position of the gripper cylinder.

[0038] The gripper cylinder is connected to the slide cylinder via a pneumatic finger mounting plate;

[0039] The wire clamp is mounted on a clamping cylinder.

[0040] The sensing device includes: a signal wheel, a sensor bracket, and a photoelectric switch.

[0041] The sensor bracket is fixedly mounted on the adjustable bearing seat;

[0042] The photoelectric switch is fixedly mounted on the sensor bracket;

[0043] The signal wheel is fixedly mounted on the drive shaft by a set screw, and the position of the signal wheel is detected by a photoelectric switch to control the position of the rotary hook.

[0044] The second sensing device includes: a photoelectric switch mounting base, a second photoelectric switch, and a sensing plate.

[0045] The photoelectric switch mounting base is connected to the shuttle box mounting plate in the lower rotary table device 1;

[0046] The photoelectric switch 2 is fixedly installed on the photoelectric switch mounting base;

[0047] The sensor plate is installed on the shuttle box, and the position of the shuttle box is controlled by detecting the position of the sensor plate through photoelectric switch two.

[0048] The rotary shuttle box and the adapter plate serve to connect and fix the overall structure.

[0049] Compared with the prior art, the advantages and beneficial effects of this utility model are:

[0050] This invention overcomes the problems of slow rotation speed, single direction control, mechanical complexity and high maintenance cost of traditional rotary hook structures. Through the design of this invention, a rotary hook box for arbitrary rotating leather sewing machines realizes sewing of any direction, greatly improves the rotation speed of the rotary hook, and greatly enhances work efficiency. Attached Figure Description

[0051] Figure 1 A perspective view of the rotary hook box assembly for an arbitrary rotating leather sewing machine;

[0052] Figure 2 A perspective view of the shuttle box body of a shuttle box for an arbitrary rotating leather sewing machine;

[0053] Figure 3 A schematic diagram of the internal structure of a rotary hook box for an arbitrary rotating leather sewing machine;

[0054] Figure 4 A schematic diagram of a rotary table device under the shuttle box for a leather sewing machine with arbitrary rotation;

[0055] Figure 5 A schematic diagram of a rotary hook box transmission device for a leather sewing machine with arbitrary rotation.

[0056] Figure 6 A schematic diagram of a rotary hook box thread clamping device for a leather sewing machine with arbitrary rotation;

[0057] Figure 7 A schematic diagram of a shuttle box sensing device for an arbitrary rotating leather sewing machine;

[0058] Figure 8 A schematic diagram of a rotary hook box sensing device for a leather sewing machine with arbitrary rotation.

[0059] Figure 9 This is a schematic diagram of a shuttle box tensioning device for a leather sewing machine with arbitrary rotation.

[0060] 1. Lower rotary table device 2. Transmission device 3. Tensioning device 4. Wire clamping device 5. Induction device 6. 7. Shuttle device 8. Shuttle box 9. Adapter plate 10. Motor 1 11. Shuttle box mounting plate 12. Turntable 13. Slip ring mounting seat 14. Slip ring holder 15. Clamping plate 16. Slip ring 17. Motor 2 18. Synchronous pulley 1 19. Synchronous belt 20. Adjustable bearing seat 21. Drive shaft 1 22. Bearing 23. Bearing seat 24. Bearing mounting seat 25. Coupling 26. Rotary converter 27. Synchronous pulley 2 28. Pneumatic hook base 29. Slide cylinder 30. Pneumatic finger mounting plate 31. Wire clamp 32. Clamping claw cylinder 33. Signal wheel 34. Sensor bracket 35. Photoelectric switch 1 36. Photoelectric switch mounting seat 37. Photoelectric switch 2 38. Sensing plate 39. Pulley tensioning plate 40. Tensioning pulley mounting seat 41. Tensioning pulley shaft 42. Idler pulley 43. Drive shaft 2 Detailed Implementation

[0061] To further understand the content, features, and effects of this invention, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings. It should be noted that these embodiments are descriptive, not limiting, and should not be construed as limiting the scope of protection of this invention.

[0062] A rotary hook box for a leather sewing machine with arbitrary rotation, the overall structure includes: a lower rotating table device 1, a transmission device 2, a tensioning device 3, a thread clamping device 4, a first sensing device 5, a second sensing device 6, a rotary hook device 7, a rotary hook box body 8, and an adapter plate 9.

[0063] The lower rotary table device 1 is connected to the lower end of the shuttle box 8;

[0064] The transmission device 2 is connected to the shuttle box 8 and the adapter plate 9;

[0065] The tensioning device 3 is connected to the rotary shuttle box 8;

[0066] The clamping device 4 is connected to the rotary hook box 8 via the adapter plate 9;

[0067] The sensing device 5 is connected to the transmission device 2;

[0068] The second sensing device 6 is connected to the lower rotating platform device 1 and the shuttle box 8;

[0069] The rotary shuttle device 7 is connected to the transmission device 2.

[0070] The lower rotary table device 1 includes: a motor 10, a shuttle box mounting plate 11, a turntable 12, a slip ring mounting seat 13, a slip ring holder 14, a retaining plate 15, and a slip ring 16.

[0071] The motor 10 is fixedly mounted on the turntable 12, and the turntable 12 is driven to rotate by the motor 10;

[0072] The turntable 12 is connected to the shuttle box 8. The rotation of the turntable 12 drives the rotation of the shuttle box 8, thereby achieving synchronous rotation with the sewing machine head.

[0073] The slip ring 16 is connected to the slip ring mounting base 13;

[0074] The slip ring holder 14 is connected to the card plate 15 and the shuttle box mounting plate 11, and the slip ring 16 is rotated through the card plate 15.

[0075] The transmission device 2 includes: a second motor 17, a first synchronous pulley 18, a synchronous belt 19, an adjustable bearing housing 20, a first transmission shaft 21, a bearing 22, a bearing housing 23, a bearing mounting base 24, a coupling 25, a rotary converter 26, a second synchronous pulley 27, and a second transmission shaft 43.

[0076] The motor 17 is fixedly mounted on the shuttle box 8 to provide power;

[0077] The synchronous pulley 18 is fixed to the motor 17 via a key connection and a set screw;

[0078] The second synchronous pulley 27 is connected to the first transmission shaft 21 via a set screw. The key connection can prevent the synchronous pulley and the motor shaft from rotating relative to each other, and the set screw can restrict the axial movement of the synchronous pulley.

[0079] The synchronous belt 19 engages with synchronous pulley 18 and synchronous pulley 2 19 for transmission.

[0080] The bearing housing 23 and bearing mounting base 24 are fixedly installed on the rotary shuttle box 8;

[0081] There are two adjustable bearing seats 20, which are fixedly installed on bearing seat 23 and bearing mounting seat 24 respectively;

[0082] The bearing housing 23, bearing mounting housing 24, and adjustable bearing housing 20 have slotted mounting holes, which are intended to solve the problem of misalignment during installation caused by machining errors and facilitate debugging and installation.

[0083] The drive shaft 21 is connected to the bearing 22, the synchronous pulley 18, the synchronous pulley 27, and the coupling 25.

[0084] The second transmission shaft 43 is connected to the coupling 25 and the rotary converter 26. The first transmission shaft 21 and the second transmission shaft 43 are connected through the coupling 25 to transmit power.

[0085] The rotary converter 26 is connected to the shuttle box 8 via the adapter plate 9. It is one of the core components of this device. Its function is to change the vertical rotation transmitted to the horizontal rotation, thereby driving the shuttle device and providing a higher rotation speed to improve working efficiency.

[0086] The tensioning device 3 includes: a pulley tensioning plate 39, a tensioning wheel mounting seat 40, a tensioning wheel shaft 41, and an idler wheel 42.

[0087] The pulley tensioning plate 39 and tensioning wheel mounting seat 40 are fixedly installed on the shuttle box 8, and serve to adjust the position of the idler wheel 42;

[0088] The idler wheel 42 is connected to the tensioner mounting base 40 via the tensioner shaft 41. After adjustment by the pulley tensioning plate 39, the synchronous belt 19 is tensioned, thereby achieving smooth transmission.

[0089] The wire clamping device 4 includes: a pneumatic hook base 28, a slide cylinder 29, a pneumatic finger mounting plate 30, wire clamping pliers 31, and a gripper cylinder 32.

[0090] The slide cylinder 29 is connected to the shuttle box 8 via the pneumatic hook base 28, and serves to adjust the position of the gripper cylinder 32.

[0091] The gripper cylinder 32 is connected to the slide cylinder 29 via the pneumatic finger mounting plate 30;

[0092] The wire clamp 31 is mounted on the clamping cylinder 32.

[0093] The sensing device 5 includes: a signal wheel 33, a sensor bracket 34, and a photoelectric switch 35.

[0094] The sensor bracket 34 is fixedly mounted on the adjustable bearing seat 20;

[0095] The photoelectric switch 35 is fixedly mounted on the sensor bracket 34;

[0096] The signal wheel 33 is fixedly mounted on the drive shaft 21 by a set screw, and the position of the shuttle is controlled by a photoelectric switch 35 to detect the position of the signal wheel 33.

[0097] Among them, the second sensing device 6 includes: a photoelectric switch mounting base 36, a second photoelectric switch 37, and a sensing plate 38.

[0098] The photoelectric switch mounting base 36 is connected to the shuttle box mounting plate 11 in the lower rotary table device 1;

[0099] The photoelectric switch 37 is fixedly mounted on the photoelectric switch mounting base 36;

[0100] The sensor plate 38 is installed on the shuttle box 8, and the position of the sensor plate 38 is detected by the photoelectric switch 37 to control the position of the shuttle box.

[0101] Among them, the rotary shuttle box 8 and the adapter plate 9 play the role of connecting and fixing the overall structure.

[0102] The rotary hook box is powered by a motor 10 to rotate the turntable 12 via the lower rotating table device 1, which in turn drives the rotary hook box body 8 to rotate. This device can rotate synchronously with the head of any rotating leather sewing machine. The rotary hook box is able to detect the starting point and the last stitch of the sewing by the sensor 5 and the sensor 6. The motor 17 provides power to the transmission device 2, which drives the synchronous pulley 18 to rotate. The synchronous belt 19 meshes with the synchronous pulleys 18 and 27 to transmit power to the transmission shaft 21. The coupling 25 then drives the transmission shaft 43 to transmit power to the rotary converter 26, which converts the vertical rotation into horizontal rotation and can convert the vertical rotation speed into a higher horizontal speed, thereby driving the rotary hook device 7 to rotate horizontally, realizing the stitch interlacing to complete the sewing. Finally, after the sewing is completed, the slide cylinder 29 moves the gripper cylinder 32 to the designated position, and the gripper cylinder 32 drives the thread clamp 31 to cut the thread.

Claims

1. A rotating hook box for an arbitrary rotary leather sewing machine, comprising: The lower rotary table device, transmission device, tensioning device, thread clamping device, sensing device one, sensing device two, rotating shuttle device, rotating shuttle box, adapter plate; characterized in that: the lower rotary table device is connected with the lower end of the rotating shuttle box; the transmission device is connected with the rotating shuttle box and the adapter plate; the tensioning device is connected with the rotating shuttle box; the thread clamping device is connected with the rotating shuttle box through the adapter plate; the sensing device one is connected with the transmission device; the sensing device two is connected with the lower rotary table device and the rotating shuttle box; the rotating shuttle device is connected with the transmission device.

2. A rotating hook box for a rotary leather sewing machine as claimed in claim 1, wherein: The lower rotary table device comprises a motor one, a rotating shuttle box mounting plate, a rotary table, a slip ring mounting seat, a slip ring clamping seat, a clamping plate and a slip ring; the motor one is fixedly installed on the rotary table and drives the rotary table to rotate; the rotary table is connected with the rotating shuttle box and drives the rotating shuttle box to rotate through the rotation of the rotary table, thereby playing a role of synchronous rotation with the sewing machine head; the slip ring is connected with the slip ring mounting seat; the slip ring clamping seat, the clamping plate and the rotating shuttle box mounting plate are connected, and the slip ring is driven to rotate through the clamping plate.

3. A rotating hook box for a rotary leather sewing machine as claimed in claim 1, wherein: The transmission device comprises a motor two, a synchronous pulley one, a synchronous belt, an adjustable bearing seat, a transmission shaft one, a bearing, a bearing seat, a bearing mounting seat, a shaft coupling, a rotary converter, a synchronous pulley two and a transmission shaft two; the motor two is fixedly installed on the rotating shuttle box to provide power; the synchronous pulley one is fixedly connected with the motor two through a key and a jackscrew; the synchronous pulley two is connected with the transmission shaft one through a jackscrew; the synchronous belt is engaged with the synchronous pulley one and the synchronous pulley two for transmission; the bearing seat and the bearing mounting seat are fixedly installed on the rotating shuttle box; the adjustable bearing seat has two and is fixedly installed on the bearing seat and the bearing mounting seat respectively; the transmission shaft one is connected with the bearing, the synchronous pulley one, the synchronous pulley two and the shaft coupling; the transmission shaft two is connected with the shaft coupling and the rotary converter, and the transmission shaft one and the transmission shaft two are connected through the shaft coupling for power transmission; the rotary converter is connected with the rotating shuttle box through the adapter plate.

4. A rotating hook box for a rotary leather sewing machine as claimed in claim 1, wherein: The tensioning device comprises a belt wheel tensioning pressure plate, a tensioning wheel mounting seat, a tensioning wheel shaft and an idler; the belt wheel tensioning pressure plate and the tensioning wheel mounting seat are fixedly installed on the rotating shuttle box and play a role of adjusting the position of the idler; the idler is connected with the tensioning wheel mounting seat through the tensioning wheel shaft and plays a role of stable transmission after the synchronous belt is adjusted by the belt wheel tensioning pressure plate.

5. A rotating hook box for a rotary leather sewing machine as claimed in claim 1, wherein: The thread clamping device comprises a pneumatic thread hooking base, a sliding table air cylinder, a pneumatic finger mounting plate, a thread clamping forceps and a clamping jaw air cylinder; the sliding table air cylinder is connected with the rotating shuttle box through the pneumatic thread hooking base and plays a role of adjusting the position of the clamping jaw air cylinder; the clamping jaw air cylinder is connected with the sliding table air cylinder through the pneumatic finger mounting plate; the thread clamping forceps is installed on the clamping jaw air cylinder.

6. A rotating hook box for arbitrary rotary leather sewing machines according to claim 1, characterized in that: The sensing device one comprises a signal wheel, a sensor support and a photoelectric switch one; the sensor support is fixedly installed on the adjustable bearing seat; the photoelectric switch one is fixedly installed on the sensor support; the signal wheel is fixedly installed on the transmission shaft one through a jackscrew and detects the position of the signal wheel through the photoelectric switch one, thereby controlling the position of the rotating shuttle.

7. A rotating hook box for arbitrary rotary leather sewing machines according to claim 1, characterized in that: The second induction device comprises a photoelectric switch mounting seat, a second photoelectric switch and an induction plate.

8. A rotating hook box for a rotary leather sewing machine as claimed in claim 3, wherein: The bearing seat, the bearing mounting seat and the adjustable bearing seat mounting hole are notched, so as to solve the problem of different center caused by machining error and facilitate debugging and installation.

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