A yarn shearing assembly mold

Abstract

This utility model proposes a yarn shear assembly mold, including a yarn shear main body positioning seat and a yarn shear center fixing seat mounted on an indexing plate. The yarn shear main body positioning seat is provided with yarn shear clamping devices on both sides. The yarn shear main body positioning seat positions the left and right shear handles, and the yarn shear center fixing seat centers and fixes the rotating hole after the left and right shear handles are assembled. The yarn shear clamping devices clamp and fix the left and right shear handles. This utility model replaces manual fixing and provides basic support for the subsequent automated assembly of the left and right shear handles.

Description

Technical Field

[0001] This utility model relates to the field of yarn shear assembly technology, and in particular to a yarn shear assembly mold. Background Technology

[0002] A yarn shears is a pair of scissors useful for trimming thread ends in both hand and machine sewing. It's a commonly used garment tool, particularly sharp for cutting fine threads and thin fabrics. This handheld tool is lightweight and easy to use. The yarn shears mainly consist of a first handle with a first cutting blade and a second handle with a second cutting blade, as well as a locking mechanism on the first and second handles. The ends of the first and second handles are rotatably connected and equipped with a return spring. During use, the first and second cutting blades cut, and the return spring returns the shears to their original position after cutting. In existing technologies, there is a scissor assembly line, such as the one described in Chinese Patent Publication No. CN114260705A. The scissor handle is placed in a scissor fixture within the scissor handle loading station by a scissor handle feeding mechanism. The indexing plate rotates to the scissor blade loading station, where the scissor blade loading mechanism places the scissor blade in the scissor fixture. After rotating to the first pre-riveting station, the first pressing riveting station, the second pre-riveting station, and the second pressing riveting station, two rivets are sequentially riveted together. The blade is then sent to the scissor unloading station, where the scissor unloading mechanism sends the scissors to the scissor shaping mechanism for correction and shaping before sending them to the unloading assembly. The unloading assembly then sends the scissors out of the assembly line. Throughout this process, workers only need to replenish the scissor blade, scissor handle, and rivets. The assembly and riveting work is fully automated. Only the assembled half-scissors need to be assembled into finished scissors for shipment, greatly improving the assembly efficiency of the scissors, reducing the workload and labor costs for workers, and avoiding accidental injuries that can occur during manual riveting. However, this only completes the assembly of the scissors and the handles. The subsequent assembly of the left and right handles still relies heavily on manual labor, which is inefficient. There is a lack of a mold that can fix the left and right handles to further replace manual assembly. Utility Model Content

[0003] This invention solves the problem that the assembly of the left and right shear handles still heavily relies on manual labor. It proposes a yarn shear assembly mold to replace manual fixing and provides basic support for the subsequent automated assembly of the left and right shear handles.

[0004] To achieve the above objectives, the following technical solution is proposed:

[0005] A yarn shear assembly mold includes a yarn shear main body positioning seat and a yarn shear center fixing seat mounted on an indexing plate. The yarn shear main body positioning seat is provided with yarn shear clamping devices on both sides. The yarn shear main body positioning seat positions the left and right shear handles. The yarn shear center fixing seat centers and fixes the rotating hole after the left and right shear handles are assembled. The yarn shear clamping devices clamp and fix the left and right shear handles.

[0006] This invention first positions the main body of the left and right shear handles using a positioning seat for the main body of the yarn shear. Then, the rotating hole of the assembled left and right shear handles is fixed in the center by the yarn shear center fixing seat, and the left and right shear handles are clamped and fixed by the yarn shear clamping device, thus achieving complete positioning and fixation of the left and right shear handles. The assembly mold rotates intermittently with the indexing plate, driving the assembled yarn shear to perform subsequent torsion spring assembly, riveting of the left and right shear handles, and screwing of the left and right shear handles. This invention provides structural support for the automated assembly of yarn shears using yarn shear clamps.

[0007] Preferably, the yarn shear body positioning seat is provided with a first limiting platform, and a left shear handle limiting platform and a right shear handle limiting platform are provided on both sides of the first limiting platform. The left shear handle limiting platform is provided with a first limiting groove, and the right shear handle limiting platform is provided with a second limiting groove. The first limiting groove and the second limiting groove form a certain angle, and the first limiting platform is provided with a semi-circular groove.

[0008] The first limiting groove of this utility model is in contact with the left scissor handle, and the second limiting groove is in contact with the right scissor handle. The first limiting platform is respectively locked at the bottom of the left and right scissor handles. The included angle formed by the first limiting groove and the second limiting groove is consistent with the included angle of the left and right scissor handles after assembly. The semi-circular groove at the top of the first limiting platform is coaxially set with the mounting hole (i.e., the rotating hole) for installing rivets after the left and right scissor handles are assembled, leaving a preset position for the subsequent fixing of the yarn shearing center fixing seat.

[0009] Preferably, the yarn shear body positioning seat has a left anti-tipping platform on the outside of the left shear handle limiting platform and a right anti-tipping platform on the outside of the right shear handle limiting platform. The left anti-tipping platform has a third limiting groove and the right anti-tipping platform has a fourth limiting groove.

[0010] The purpose of this utility model in setting up a left anti-tipping platform and a right anti-tipping platform is to increase the positioning area and prevent the left and right shear handles from falling out of the first and second limiting slots due to the center of gravity after assembly.

[0011] Preferably, the third and fourth limiting grooves form the same angle with the first and second limiting grooves.

[0012] Preferably, the yarn shearing center fixing seat includes a slide rail seat fixed on the indexing plate and a center positioning slider slidably connected to the slide rail seat. The center positioning slider has a pin at its front end and is connected to a first cylinder fixed on the slide rail seat.

[0013] Preferably, the yarn shear clamping device includes clamping units symmetrically arranged on both sides of the yarn shear body positioning seat. Each clamping unit includes a clamping slider, a first clamping block, and a second clamping block. The first and second clamping blocks are slidably connected to the clamping slide rail. The first and second clamping blocks are provided with sliding columns. The clamping slider is provided with a sliding groove. The sliding column is slidably connected in the sliding groove. A return spring is connected between the clamping slider and the indexing plate. The clamping slider is connected to a second cylinder.

[0014] Preferably, a pair of sliding grooves are provided symmetrically, and the pair of sliding grooves form a certain angle. When the sliding column slides towards the angle of the sliding grooves, the first clamping block and the second clamping block move closer to each other.

[0015] The beneficial effects of this utility model are: using molds to replace manual labor to achieve the positioning and fixing of the left and right scissor handles, which facilitates the subsequent automated assembly of the left and right scissor handles. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is an enlarged view of the yarn shearing main positioning seat of this utility model.

[0018] Figure 3 This is a schematic diagram of the yarn shearing clamping device of this utility model.

[0019] The components include: 1. Indexing plate; 2. Yarn shear body positioning seat; 3. Yarn shear center fixing seat; 4. Yarn shear clamping device; 21. First limiting platform; 22. Left shear handle limiting platform; 23. Right shear handle limiting platform; 24. Left anti-tipping platform; 25. Right anti-tipping platform; 31. Center positioning slider; 32. First cylinder; 33. Ejector pin; 41. Clamping slider; 42. First clamping block; 43. Second clamping block; 44. Clamping slide rail; 45. Return spring; 46. Second cylinder. Detailed Implementation

[0020] Example:

[0021] This embodiment proposes a yarn shearing assembly mold, referring to... Figure 1 It includes a yarn shear body positioning seat 2 and a yarn shear center fixing seat 3 installed on the indexing plate 1. The yarn shear body positioning seat 2 is provided with yarn shear clamping devices 4 on both sides. The yarn shear body positioning seat 2 positions the left and right shear handles. The yarn shear center fixing seat 3 centers and fixes the rotating hole after the left and right shear handles are assembled. The yarn shear clamping devices 4 clamp and fix the left and right shear handles.

[0022] This invention first positions the main body of the left and right shear handles using the main body positioning seat 2, then fixes the rotating holes of the assembled left and right shear handles using the central fixing seat 3, and clamps and fixes the left and right shear handles using the shear clamping device 4, thus achieving complete positioning and fixation of the left and right shear handles. The assembly mold rotates intermittently with the indexing plate 1, driving the assembled shears to perform subsequent torsion spring assembly, left and right shear handle riveting, and left and right shear handle screwing processes. This invention provides structural support for the automated assembly of shears using shear clamps.

[0023] refer to Figure 2 The yarn shear body positioning seat 2 is provided with a first limiting platform 21. The left shear handle limiting platform 22 and the right shear handle limiting platform 23 are respectively provided on both sides of the first limiting platform 21. The left shear handle limiting platform 22 is provided with a first limiting groove, and the right shear handle limiting platform 23 is provided with a second limiting groove. The first limiting groove and the second limiting groove form a certain angle. The first limiting platform 21 is provided with a semi-circular groove.

[0024] The first limiting groove of this utility model is in contact with the left scissor handle, and the second limiting groove is in contact with the right scissor handle. The first limiting platform 21 is respectively locked at the bottom of the left and right scissor handles. The included angle formed by the first limiting groove and the second limiting groove is consistent with the included angle of the left and right scissor handles after assembly. The semi-circular groove at the top of the first limiting platform 21 is coaxially set with the mounting hole (i.e., the rotating hole) for installing rivets after the left and right scissor handles are assembled, leaving a preset position for the subsequent fixing of the yarn shearing center fixing seat 3.

[0025] The yarn shear body positioning seat 2 has a left anti-tipping platform 24 on the outside of the left shear handle limiting platform 22 and a right anti-tipping platform 25 on the outside of the right shear handle limiting platform 23. The left anti-tipping platform 24 has a third limiting groove and the right anti-tipping platform 25 has a fourth limiting groove.

[0026] The purpose of this utility model is to set the left anti-tipping platform 24 and the right anti-tipping platform 25 to increase the positioning area and prevent the left and right scissor handles from falling out of the first and second limiting grooves due to the center of gravity after assembly.

[0027] The third and fourth limiting grooves form the same angle with the first and second limiting grooves.

[0028] refer to Figure 2 The yarn shearing center fixing seat 3 includes a slide rail seat fixed on the indexing plate 1 and a center positioning slider 31 slidably connected to the slide rail seat. The center positioning slider 31 has a pin 33 at its front end and is connected to a first cylinder 32 fixed on the slide rail seat.

[0029] refer to Figure 3The yarn shear clamping device 4 includes clamping units symmetrically arranged on both sides of the yarn shear body positioning seat 2. Each clamping unit includes a clamping slider 41, a first clamping block 42, and a second clamping block 43. The first clamping block 42 and the second clamping block 43 are slidably connected to the clamping slide rail 44. The first clamping block 42 and the second clamping block 43 are provided with sliding columns. The clamping slider 41 is provided with a sliding groove. The sliding column is slidably connected in the sliding groove. A return spring 45 is connected between the clamping slider 41 and the indexing plate 1. The clamping slider 41 is connected to the second cylinder 46.

[0030] The slide grooves are provided symmetrically in a pair, and the pair of slide grooves form a certain angle. When the slide column slides towards the angle of the slide grooves, the first clamping block 42 and the second clamping block 43 move closer to each other.

[0031] The working principle of this utility model is as follows:

[0032] After assembly, the left and right shear handles are transferred manually or by a robotic arm and placed on the yarn shear body positioning seat 2 from top to bottom. At this time, the first and third limiting grooves hold the left shear handle, and the second and fourth limiting grooves hold the right shear handle. The bottoms of the left and right shear handles are held on both sides of the first limiting platform 21. The ejector pin 33 is inserted into the rotating hole after the left and right shear handles are assembled under the drive of the central positioning slider 31. The clamping units set on both sides of the yarn shear body positioning seat 2 clamp and fix the left and right shear handles, realizing the positioning and fixing of the assembled left and right shear handles. Then, the indexing plate 1 drives them to the subsequent automated assembly process.

Claims

1. A yarn shearing assembly mold, characterized in that, It includes a yarn shear body positioning seat (2) and a yarn shear center fixing seat (3) installed on the indexing plate (1). The yarn shear body positioning seat (2) is provided with yarn shear clamping devices (4) on both sides. The yarn shear body positioning seat (2) positions the left and right shear handles. The yarn shear center fixing seat (3) fixes the center of the rotating hole after the left and right shear handles are assembled. The yarn shear clamping device (4) clamps and fixes the left and right shear handles.

2. The yarn shearing assembly mold according to claim 1, characterized in that, The yarn shear body positioning seat (2) is provided with a first limiting platform (21). The left shear handle limiting platform (22) and the right shear handle limiting platform (23) are respectively provided on both sides of the first limiting platform (21). The left shear handle limiting platform (22) is provided with a first limiting groove, and the right shear handle limiting platform (23) is provided with a second limiting groove. The first limiting groove and the second limiting groove form a certain angle. The first limiting platform (21) is provided with a semi-circular groove.

3. The yarn shearing assembly mold according to claim 2, characterized in that, The yarn shear body positioning seat (2) has a left anti-tipping platform (24) on the outside of the left shear handle limiting platform (22) and a right anti-tipping platform (25) on the outside of the right shear handle limiting platform (23). The left anti-tipping platform (24) has a third limiting groove and the right anti-tipping platform (25) has a fourth limiting groove.

4. The yarn shearing assembly mold according to claim 3, characterized in that, The third and fourth limiting grooves form the same angle with the first and second limiting grooves.

5. A yarn shearing assembly mold according to any one of claims 1-4, characterized in that, The yarn shearing center fixing seat (3) includes a slide rail seat fixed on the indexing plate (1) and a center positioning slider (31) slidably connected to the slide rail seat. The center positioning slider (31) has a pin (33) at its front end and is connected to a first cylinder (32) fixed on the slide rail seat.

6. The yarn shearing assembly mold according to claim 1, characterized in that, The yarn shear clamping device (4) includes clamping units symmetrically arranged on both sides of the yarn shear body positioning seat (2). Each clamping unit includes a clamping slider (41), a first clamping block (42), and a second clamping block (43). The first clamping block (42) and the second clamping block (43) are slidably connected to the clamping slide rail (44). The first clamping block (42) and the second clamping block (43) are provided with sliding columns. The clamping slider (41) is provided with a sliding groove. The sliding column is slidably connected in the sliding groove. A return spring (45) is connected between the clamping slider (41) and the indexing plate (1). The clamping slider (41) is connected to the second cylinder (46).

7. A yarn shearing assembly mold according to claim 6, characterized in that, The slide grooves are provided symmetrically in a pair, and the pair of slide grooves form a certain angle. When the slide column slides towards the angle of the slide grooves, the first clamping block (42) and the second clamping block (43) move closer to each other.

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