A shuttleless machine wire cutting mechanism

Abstract

This utility model discloses a wire-cutting mechanism for a shuttleless machine, including one drive assembly and at least two wire-cutting assemblies. Both the drive assembly and the wire-cutting assemblies are mounted on the frame of the shuttleless machine. Each wire-cutting assembly includes a wire-cutting shaft, a hook shaft, a fixed blade, a moving blade, a hook seat, and a moving blade seat. The wire-cutting shaft, the hook shaft, and the fixed blade are all mounted on the frame. The hook seat is mounted on the hook shaft and is used to hook the bottom and top threads of the material. The moving blade seat is mounted on the wire-cutting shaft, and the moving blade is mounted on the moving blade seat. The drive end of the drive assembly is connected to the wire-cutting shaft of one of the wire-cutting assemblies, and the wire-cutting shafts of the two connected wire-cutting assemblies are drive-connected. This utility model uses one drive assembly to drive several wire-cutting assemblies to complete the wire-cutting process. The wire-cutting mechanism has a simpler structure, reduces the procurement cost of cylinders, and lowers the manufacturer's production costs.

Description

Technical Field

[0001] This utility model relates to the field of shuttleless machine technology, and in particular to a wire-cutting mechanism for a shuttleless machine. Background Technology

[0002] A shuttleless sewing machine is a type of sewing machine commonly used in industries such as tailoring, textiles, and shoemaking. When a shuttleless sewing machine is in operation, a needle is threaded through the top thread, and a hook is threaded through the bottom thread; it uses a double-thread chain stitch.

[0003] Currently, mainstream traditional shuttleless sewing machines on the market require manual cutting of the bobbin thread after the finished product is sewn. This results in high labor input and low efficiency.

[0004] Some improved shuttleless sewing machines use a drive unit to power a thread-cutting unit to automate thread cutting, but this requires more drive units, increasing the production cost of the sewing machine. Furthermore, the increased number of components also increases the user's daily maintenance costs.

[0005] Therefore, in order to reduce labor and time costs and improve efficiency, and at the same time, to reduce the production and daily maintenance costs of sewing machines, it is necessary to improve the thread-cutting mechanism of existing shuttleless sewing machines. Utility Model Content

[0006] The present invention aims to at least partially solve one of the problems existing in the prior art. To this end, the present invention proposes a shuttleless wire cutting mechanism that uses one drive component to drive several wire cutting components to complete the wire cutting process.

[0007] The above objective is achieved through the following technical solution:

[0008] A wire-cutting mechanism for a shuttleless machine includes a drive assembly and at least two wire-cutting assemblies. Both the drive assembly and the wire-cutting assemblies are mounted on the frame of the shuttleless machine. Each wire-cutting assembly includes a wire-cutting shaft, a hook shaft, a fixed blade, a moving blade, a hook seat, and a moving blade seat. The wire-cutting shaft, the hook shaft, and the fixed blade are all mounted on the frame. The hook seat is mounted on the hook shaft and is used to hook the bottom and top threads of the material. The moving blade seat is mounted on the wire-cutting shaft, and the moving blade is mounted on the moving blade seat.

[0009] The drive end of the drive component is connected to the cutting shaft of one of the wire cutting components. The cutting shafts of the two connected wire cutting components are connected by a transmission. The drive component drives the cutting shaft to rotate. The rotation of the cutting shaft drives the moving blade holder and the moving blade to rotate. The moving blade and the fixed blade cooperate to cut the bottom line and top line hooked by the hook holder together.

[0010] In some embodiments, the drive assembly includes a cylinder connecting rod seat, a cylinder, and a first transmission connecting rod, wherein the cylinder connecting rod seat is mounted on the frame, the cylinder is mounted on the cylinder connecting rod seat, one end of the first transmission connecting rod is connected to the drive end of the cylinder, and the other end is connected to the wire cutting shaft of one of the wire cutting assemblies.

[0011] In some embodiments, the drive assembly further includes a fisheye bearing and a fixing screw, one end of the fisheye bearing being connected to the drive end of the cylinder, and the other end being connected to the first transmission connecting rod via the fixing screw.

[0012] In some embodiments, a connecting rod and a second transmission link are also included, wherein one end of the connecting rod is connected to the wire-cutting shaft, and the other end is connected to another wire-cutting assembly via the second transmission link.

[0013] In some embodiments, a first bearing is provided between the connecting rod and the second transmission link, and a second bearing is provided between the hook shaft and the frame.

[0014] In some embodiments, a first clamping part is provided at the lower end of the hook seat, and the hook seat is mounted on the hook shaft through the first clamping part; a second clamping part is provided at the lower end of the moving blade seat, and the moving blade seat is mounted on the wire cutting shaft through the second clamping part.

[0015] In some embodiments, the movable blade holder includes an arc-shaped connecting arm, and the movable blade includes a straight connecting portion, the movable blade being detachably connected to the connecting arm of the movable blade holder via its connecting portion.

[0016] In some embodiments, a wire-cutting blade for cutting wire is provided at the top of the connecting part of the moving blade. The wire-cutting blade is horizontally arranged, and a wire-cutting opening is provided on the side of the wire-cutting blade near the fixed blade.

[0017] In some embodiments, the wire cut includes a V-shaped wire cut portion.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] This invention proposes a shuttleless wire-cutting mechanism that utilizes a single drive component to power several wire-cutting components to complete the wire-cutting process. The wire-cutting mechanism has a simpler structure, reduces the procurement cost of cylinders, and lowers the manufacturer's production costs. Furthermore, the simpler machine structure reduces manual wire-cutting steps, extends the machine's lifespan, and reduces the user's labor and machine maintenance costs. Attached Figure Description

[0020] Figure 1This is a front view of the shuttleless wire-cutting mechanism in the embodiment;

[0021] Figure 2 yes Figure 1 A magnified view of part A in the middle;

[0022] Figure 3 This is a three-dimensional schematic diagram of the shuttleless wire-cutting mechanism in the embodiment;

[0023] Figure 4 yes Figure 3 A magnified view of part B in the middle section;

[0024] Figure 5 yes Figure 4 A magnified view of part C in the middle; Detailed Implementation

[0025] The following embodiments illustrate the present invention, but the present invention is not limited to these embodiments. Modifications to the specific implementation of the present invention or equivalent substitutions for some technical features, without departing from the spirit of the present invention, should all be covered within the scope of the technical solution claimed by the present invention.

[0026] Example 1: As Figures 1 to 5 As shown, this embodiment provides a wire-cutting mechanism for a shuttleless machine, including one drive assembly 1 and at least two wire-cutting assemblies 2. The drive assembly 1 and the wire-cutting assemblies 2 are both mounted on the frame 3 of the shuttleless machine. The wire-cutting assembly 2 includes a wire-cutting shaft 21, a hook shaft 22, a fixed blade 23, a moving blade 24, a hook seat 25, and a moving blade seat 26. The wire-cutting shaft 21, the hook shaft 22, and the fixed blade 23 are all mounted on the frame 3. The hook seat 25 is mounted on the hook shaft 22 and is used to hook the bottom and top threads of the material. The moving blade seat 26 is mounted on the wire-cutting shaft 21, and the moving blade 24 is mounted on the moving blade seat 26.

[0027] The driving end of the driving component 1 is connected to the cutting shaft 21 of one of the cutting components 2. The cutting shafts 21 of the two cutting components 2 are connected in a transmission manner. The driving component 1 drives the cutting shaft 21 to rotate. The rotation of the cutting shaft 21 drives the moving blade seat 26 and the moving blade 24 to rotate. The moving blade 24 and the fixed blade 23 cooperate to cut the bottom line and the top line hooked by the hook seat 25 together.

[0028] The above embodiments provide a shuttleless wire-cutting mechanism that uses a single drive component to drive several wire-cutting components to complete the wire-cutting process. The wire-cutting mechanism has a simpler structure, reduces the procurement cost of cylinders, and lowers the manufacturer's production costs. Furthermore, the simpler machine structure reduces the need for manual wire cutting, extends the machine's lifespan, and reduces the user's labor and machine maintenance costs.

[0029] Furthermore, the drive assembly 1 includes a cylinder connecting rod seat 11, a cylinder 12, and a first transmission connecting rod 13. The cylinder connecting rod seat 11 is mounted on the frame 3, and the cylinder 12 is mounted on the cylinder connecting rod seat 11. One end of the first transmission connecting rod 13 is connected to the drive end of the cylinder 12, and the other end is connected to the wire cutting shaft 21 of one of the wire cutting assemblies 2. The movement of the cylinder 12 is controlled by the control system within the frame 3, thereby driving the wire cutting assembly 2 to move and achieve the purpose of wire cutting.

[0030] Preferably, the drive assembly 1 further includes a fisheye bearing 14 and a fixing screw 15. One end of the fisheye bearing 14 is connected to the drive end of the cylinder 12, and the other end is connected to the first transmission connecting rod 13 through the fixing screw 15. This facilitates the lifting and lowering of the cylinder 12 and drives the wire cutting assembly 2 to move regularly.

[0031] Furthermore, the wire-cutting mechanism also includes a connecting rod 16 and a second transmission link 17, wherein one end of the connecting rod 16 is connected to the wire-cutting shaft 21, and the other end is connected to another wire-cutting assembly 2 via the second transmission link 17. This design allows for transmission connections between several wire-cutting assemblies 2, thereby achieving the goal of one drive assembly driving several wire-cutting assemblies to complete the wire-cutting process, automating the wire-cutting process and reducing labor costs.

[0032] Preferably, a first bearing 18 is provided between the connecting rod 16 and the second transmission connecting rod 17, and a second bearing 19 is provided between the hook shaft 22 and the frame 3. This fixes the wire cutting shaft 21 on the frame 3 and facilitates transmission between the wire cutting assemblies 2.

[0033] Furthermore, a first clamping part 251 is provided at the lower end of the hook seat 25, and the hook seat 25 is mounted on the hook shaft 22 through the first clamping part 251. A second clamping part 261 is provided at the lower end of the moving blade seat 26, and the moving blade seat 26 is mounted on the wire cutting shaft 21 through the second clamping part 261. The design of the first clamping part 251 and the second clamping part 261 facilitates timely replacement when the hook seat 25 or the moving blade seat 26 is damaged, which is beneficial to the daily maintenance of the entire wire cutting mechanism and extends its service life.

[0034] Furthermore, the movable blade holder 26 includes an arc-shaped connecting arm 262, and the movable blade 24 includes a straight connecting portion 241. The movable blade 24 is detachably connected to the connecting arm 262 of the movable blade holder 26 via its connecting portion 241. The straight connecting portion 241 of the movable blade 24 helps to avoid the hook seat 25, so as to prevent the components from interfering with each other's operation.

[0035] Specifically, a wire-cutting blade 4 is provided at the top of the connecting part 241 of the moving blade 24. The wire-cutting blade 4 is horizontally arranged, and a wire-cutting opening 41 is provided on the side of the wire-cutting blade 4 near the fixed blade 23. This facilitates the moving blade 24 to approach the fixed blade 23 under the drive of the moving blade holder 26, matching the size of the fixed blade 23 to realize the wire-cutting operation.

[0036] Preferably, the wire cutting opening 41 includes a V-shaped wire cutting portion 411. This design causes the wire to be caught on the wire cutting blade 4, and when the moving blade 24 moves towards the fixed blade 23, the wire cannot leave the moving blade 24, thereby effectively achieving the goal of cutting the wire.

[0037] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A wire-cutting mechanism for a shuttleless machine, characterized in that: The device includes one drive assembly (1) and at least two wire-cutting assemblies (2). Both the drive assembly (1) and the wire-cutting assemblies (2) are mounted on the frame (3) of the shuttleless machine. The wire-cutting assembly (2) includes a wire-cutting shaft (21), a hook shaft (22), a fixed blade (23), a moving blade (24), a hook seat (25), and a moving blade seat (26). The wire-cutting shaft (21), the hook shaft (22), and the fixed blade (23) are all mounted on the frame (3). The hook seat (25) is mounted on the hook shaft (22) and is used to hook the bottom and top lines of the material. The moving blade seat (26) is mounted on the wire-cutting shaft (21), and the moving blade (24) is mounted on the moving blade seat (26). The driving end of the driving component (1) is connected to the cutting shaft (21) of one of the cutting components (2). The cutting shafts (21) of the two cutting components (2) are connected in a transmission. The driving component (1) drives the cutting shaft (21) to rotate. The rotation of the cutting shaft (21) drives the moving blade seat (26) and the moving blade (24) to rotate. The moving blade (24) and the fixed blade (23) cooperate to cut the bottom line and the top line hooked by the hook seat (25) together.

2. The wire-cutting mechanism of a shuttleless machine according to claim 1, characterized in that: The drive assembly (1) includes a cylinder connecting rod seat (11), a cylinder (12) and a first transmission connecting rod (13), wherein the cylinder connecting rod seat (11) is mounted on the frame (3), the cylinder (12) is mounted on the cylinder connecting rod seat (11), one end of the first transmission connecting rod (13) is connected to the drive end of the cylinder (12), and the other end is connected to the wire cutting shaft (21) of one of the wire cutting assemblies (2).

3. The wire-cutting mechanism of a shuttleless machine according to claim 2, characterized in that: The drive assembly (1) also includes a fisheye bearing (14) and a fixing screw (15). One end of the fisheye bearing (14) is connected to the drive end of the cylinder (12), and the other end is connected to the first transmission connecting rod (13) through the fixing screw (15).

4. The wire-cutting mechanism of a shuttleless machine according to claim 1, 2 or 3, characterized in that: It also includes a connecting rod (16) and a second transmission link (17), wherein one end of the connecting rod (16) is connected to the wire cutting shaft (21), and the other end is connected to another wire cutting assembly (2) through the second transmission link (17).

5. The wire-cutting mechanism of a shuttleless machine according to claim 4, characterized in that: A first bearing (18) is provided between the connecting rod (16) and the second transmission connecting rod (17), and a second bearing (19) is provided between the hook shaft (22) and the frame (3).

6. A wire-cutting mechanism for a shuttleless machine according to claim 1, 2, or 3, characterized in that: A first clamping part (251) is provided at the lower end of the hook seat (25), and the hook seat (25) is mounted on the hook shaft (22) through the first clamping part (251). A second clamping part (261) is provided at the lower end of the moving blade seat (26), and the moving blade seat (26) is mounted on the wire cutting shaft (21) through the second clamping part (261).

7. A wire-cutting mechanism for a shuttleless machine according to claim 1, 2, or 3, characterized in that: The movable blade holder (26) includes an arc-shaped connecting arm (262), and the movable blade (24) includes a straight connecting portion (241). The movable blade (24) is detachably connected to the connecting arm (262) of the movable blade holder (26) through its connecting portion (241).

8. The wire-cutting mechanism of a shuttleless machine according to claim 7, characterized in that: A wire-cutting blade (4) for cutting wire is provided at the top of the connecting part (241) of the moving blade (24). The wire-cutting blade (4) is horizontally arranged, and a wire-cutting opening (41) is provided on the side of the wire-cutting blade (4) close to the fixed blade (23).

9. The wire-cutting mechanism of a shuttleless machine according to claim 8, characterized in that: The wire cutting opening (41) includes a V-shaped wire cutting section (411).

Images