Positioning tool for processing top tooth workpiece of craft sewing machine

Abstract

The utility model discloses a positioning tool for processing a top tooth workpiece of a craft sewing machine, which relates to the technical field of sewing machine accessory processing, and comprises a mounting frame and a transmission component, the transmission component is arranged in the mounting frame and comprises a fixed frame fixedly connected to the mounting frame, and a third transmission rod is connected to the fixed frame in a sliding manner; the third transmission rod is connected with a first transmission rod, the first transmission rod is slidably connected with a second transmission frame, the first transmission frame and the second transmission frame are slidably connected with a first connecting rod, the first connecting rod is slidably connected to the bottom of the first transmission frame, and the second transmission rod slides in an inclined groove of the lower pressing block to drive the lower pressing block to slide downwards, so that axial lower pressing and fixing are achieved; double positioning actions of radial clamping matched with upper axial pressing are achieved through a single power source, the device can be self-adapted to top tooth workpieces with different rod diameters and step positions through displacement of a transmission structure, and the whole set of tool does not need to be replaced according to specific specifications.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine parts processing technology, specifically to a positioning fixture for processing the top tooth workpiece of a process sewing machine. Background Technology

[0002] In the field of ton bag processing, process sewing machines play a vital role. Ton bags are widely used in many fields such as logistics and industrial production due to their strong load-bearing capacity, durability, and ease of handling. The stable operation and efficient processing of sewing machines are inseparable from the precise coordination of their various components, among which the top tooth workpiece is one of the key components.

[0003] The top tooth needs to be clamped during processing. Existing tooling structures are mostly fixed designs that only fit specific specifications of top teeth. When parameters such as workpiece diameter and step spacing change, the entire set needs to be replaced. This makes it incompatible with multiple specifications of sewing machines with different load-bearing capacities, leading to increased equipment procurement and warehousing costs. Utility Model Content

[0004] The purpose of this invention is to provide a positioning fixture for machining the top tooth of a process sewing machine, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a positioning fixture for machining the top tooth of a process sewing machine, including a mounting frame, and further comprising:

[0006] A transmission assembly is placed inside a mounting frame. The transmission assembly includes a fixed frame fixedly connected to the mounting frame, a third transmission rod slidably connected to the fixed frame, a first transmission rod connected to the third transmission rod, a second transmission frame and a first transmission frame slidably connected to the first transmission rod, a first connecting rod slidably connected to the second transmission frame, the first connecting rod slidably connected to the bottom of the first transmission frame, and a motor fixedly connected to the side of the mounting frame near the second transmission frame. The output end of the motor is fixedly connected to the first connecting rod.

[0007] The pressing assembly includes a pressing block slidably connected to a mounting frame. A second transmission rod is slidably connected to the pressing block, and a fourth transmission rod is connected to the second transmission rod. The fourth transmission rod is fixedly connected to the end of a first transmission rod away from the clamping frame. A connecting frame is fixedly connected to the pressing block, and a second connecting rod is fixedly connected to the connecting frame. A rubber frame is fixedly connected to the second connecting rod.

[0008] Furthermore, an annular groove is provided on the side of the mounting frame near the first transmission frame, and the first transmission frame is slidably connected in the annular groove on the mounting frame. A slot is provided on the side of the first transmission frame near the first connecting rod, and the first connecting rod is slidably connected in the slot on the first transmission frame. The second transmission frame is fixedly connected to the mounting frame, and a slot is provided on the second transmission frame, and the first connecting rod is slidably connected in the slot on the second transmission frame.

[0009] The above technical solution is adopted: by setting the first connecting rod to slide in the slot on the second transmission frame, the first connecting rod is prevented from being blocked by the second transmission frame.

[0010] Furthermore, a first rotating shaft and a second rotating shaft are rotatably connected to the first transmission rod. The first rotating shaft is rotatably connected to the second transmission frame, and the second rotating shaft is rotatably connected to the first transmission frame.

[0011] The above technical solution is adopted: by setting a first rotating shaft and a second rotating shaft, it is convenient for the first transmission rod to slide on the second transmission frame and the first transmission frame.

[0012] Furthermore, a spring is fixedly connected to the bottom of the lower pressure block, and the side of the spring at the bottom of the lower pressure block away from the lower pressure block is fixedly connected to the mounting frame.

[0013] The above technical solution involves incorporating a spring to connect the lower pressure block, preventing it from completely detaching from the mounting frame.

[0014] Furthermore, a universal joint is fixedly connected to the third transmission rod, and the side of the universal joint away from the third transmission rod is fixedly connected to the first transmission rod.

[0015] The above technical solution utilizes a universal joint to make the connection between the third transmission rod and the first transmission rod more flexible.

[0016] Furthermore, a spring is fixedly connected to the second transmission rod, and the side of the spring away from the second transmission rod is fixedly connected to the fourth transmission rod.

[0017] The above technical solution is adopted: by fixing a spring to the second transmission rod, the connection between the third transmission rod and the second transmission rod becomes more flexible.

[0018] Furthermore, a slot is provided on the side of the mounting frame near the second transmission rod, a limit rod is fixedly connected to the second transmission rod, and the limit rod on the second transmission rod is slidably connected in the slot on the mounting frame. An oblique hole is provided on the lower pressure block, and the second transmission rod is slidably connected in the oblique hole on the lower pressure block.

[0019] Using the above technical solution: When in use, when the first transmission rod moves the second transmission rod to slide, the second transmission rod can only move in a straight line under the action of the limiting rod and the slot on the mounting frame, which makes it easy for the end of the second transmission rod away from the fixed frame to slide on the lower pressure block.

[0020] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0021] In this invention, the rotation of the first connecting rod drives the first transmission frame to slide within the annular groove of the mounting frame. The first transmission frame drives the second rotating shaft to shift, causing the first transmission rod to rotate on the first rotating shaft, which in turn drives the third transmission rod to slide into the fixed frame, enabling the clamping frame to achieve radial contraction clamping. Simultaneously, the rotation of the first transmission rod drives the second transmission rod to slide on the mounting frame. The second transmission rod slides within the inclined groove of the lower pressure block, causing the lower pressure block to slide down, achieving axial downward pressing and fixing. A single power source achieves dual positioning actions of radial clamping and axial pressing. The displacement of the transmission structure can adapt to different rod diameters and step positions of the top tooth workpiece, eliminating the need to change the entire set of tooling for specific specifications. Attached Figure Description

[0022] Figure 1 A schematic diagram of the overall structure of the positioning fixture used for machining the top tooth of a process sewing machine.

[0023] Figure 2 A schematic diagram showing the removal of the connecting frame of the positioning fixture used for machining the top tooth workpiece of a process sewing machine.

[0024] Figure 3 A schematic diagram of the position of the positioning fixture clamping frame used for machining the top tooth of a process sewing machine.

[0025] Figure 4 This is a schematic diagram of the motor position of the positioning fixture used for machining the top tooth workpiece of a process sewing machine.

[0026] Figure 5 A schematic diagram of the position of the fixing frame of the positioning fixture used for machining the top tooth workpiece of a process sewing machine.

[0027] Figure 6 Positioning fixture for machining the top tooth of a process sewing machine Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0028] Figure 7 Positioning fixture for machining the top tooth of a process sewing machine Figure 3 Enlarged schematic diagram of the structure at point B.

[0029] Numbering on the map:

[0030] 1. Mounting frame;

[0031] 2. Transmission assembly; 21. Fixed frame; 22. First transmission frame; 23. Second transmission frame; 24. First connecting rod; 25. First transmission rod; 26. First rotating shaft; 27. Second rotating shaft; 28. Third transmission rod; 29. ​​Clamping frame; 210. Universal joint; 211. Motor;

[0032] 3. Pressing assembly; 31. Pressing block; 32. Second transmission rod; 33. Spring; 34. Fourth transmission rod; 35. Connecting frame; 36. Second connecting rod; 37. Rubber frame. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Example:

[0035] like Figures 1-7 As shown, this utility model provides a technical solution: a positioning fixture for machining the top tooth workpiece of a process sewing machine, including a mounting frame 1, and further comprising:

[0036] A transmission assembly 2 is placed inside a mounting frame 1. The transmission assembly 2 includes a fixed frame 21 fixedly connected to the mounting frame 1. A third transmission rod 28 is slidably connected to the fixed frame 21. A first transmission rod 25 is connected to the third transmission rod 28. A second transmission frame 23 and a first transmission frame 22 are slidably connected to the first transmission rod 25. A first connecting rod 24 is slidably connected to the second transmission frame 23. The first connecting rod 24 is slidably connected to the bottom of the first transmission frame 22. A motor 211 is fixedly connected to the mounting frame 1 on the side near the second transmission frame 23. The output end of the motor 211 is fixedly connected to the first connecting rod 24.

[0037] The pressing assembly 3 includes a pressing block 31 slidably connected to the mounting frame 1. A second transmission rod 32 is slidably connected to the pressing block 31, and a fourth transmission rod 34 is connected to the second transmission rod 32. The fourth transmission rod 34 is fixedly connected to the end of the first transmission rod 25 away from the clamping frame 29. A connecting frame 35 is fixedly connected to the pressing block 31, and a second connecting rod 36 is fixedly connected to the connecting frame 35. A rubber frame 37 is fixedly connected to the second connecting rod 36.

[0038] In this invention, the first connecting rod 24 rotates, causing the first transmission frame 22 to slide within the annular groove of the mounting frame 1. The first transmission frame 22 drives the second rotating shaft 27 to move, causing the first transmission rod 25 to rotate on the first rotating shaft 26. This, in turn, drives the third transmission rod 28 to slide into the fixed frame 21, enabling the clamping frame 29 to achieve radial contraction clamping. Simultaneously, the first transmission rod 25 rotates, causing the second transmission rod 32 to slide on the mounting frame 1. The second transmission rod 32 slides within the inclined groove of the lower pressure block 31, causing the lower pressure block 31 to slide down, achieving axial downward pressing and fixing. A single power source achieves dual positioning actions of radial clamping and axial pressing. The displacement of the transmission structure can adapt to different rod diameters and step positions of the top tooth workpiece, eliminating the need to change the entire set of tooling for specific specifications.

[0039] Furthermore, such as Figures 1 to 7 As shown, an annular groove is provided on the side of the mounting frame 1 near the first transmission frame 22. The first transmission frame 22 is slidably connected to the annular groove on the mounting frame 1. A slot is provided on the side of the first transmission frame 22 near the first connecting rod 24. The first connecting rod 24 is slidably connected to the slot on the first transmission frame 22. The second transmission frame 23 is fixedly connected to the mounting frame 1. A slot is provided on the second transmission frame 23. The first connecting rod 24 is slidably connected to the slot on the second transmission frame 23. By designing the first connecting rod 24 to slide within the slots of the second transmission frame 23 and the first transmission frame 22, it is ensured that the first connecting rod 24 is not physically obstructed by the second transmission frame 23 when rotating with the motor 211, maintaining the smoothness of the transmission path and avoiding transmission failure or positioning deviation caused by mechanical interference.

[0040] A first rotating shaft 26 and a second rotating shaft 27 are rotatably connected to the first transmission rod 25. The first rotating shaft 26 is rotatably connected to the second transmission frame 23, and the second rotating shaft 27 is rotatably connected to the first transmission frame 22. By setting the rotatable first rotating shaft 26 and second rotating shaft 27 between the first transmission rod 25 and the second transmission frame 23 and the first transmission frame 22, a sliding hinge node is constructed, which allows the first transmission rod 25 to rotate flexibly with the rotating shaft as the fulcrum when subjected to force, effectively reducing the frictional resistance in the transmission process and improving the adaptive adjustment capability of the transmission assembly 2 to different clamping positions.

[0041] like Figure 4 As shown, a spring 33 is fixedly connected to the bottom of the lower pressure block 31. The side of the spring 33 at the bottom of the lower pressure block 31 away from the lower pressure block 31 is fixedly connected to the mounting frame 1. By setting a reset spring 33 between the mounting frame 1 and the lower pressure block 31, elastic support force is provided for the lower pressure block 31, ensuring that the lower pressure block 31 can automatically reset by the elastic force of the spring 33 after completing the axial pressing action. At the same time, it prevents the lower pressure block 31 from detaching from the mounting frame 1 due to external force, thus ensuring the structural stability and operational reliability of the lower pressure assembly 3.

[0042] A universal joint 210 is fixedly connected to the third transmission rod 28. The side of the universal joint 210 away from the third transmission rod 28 is fixedly connected to the first transmission rod 25. By setting the universal joint 210 at the connection node between the third transmission rod 28 and the first transmission rod 25, the transmission structure is given a multi-degree-of-freedom rotation capability. When the third transmission rod 28 moves with the first transmission rod 25, it can adapt to the displacement requirements of different angles, eliminate the transmission jamming caused by rigid connection, and improve the flexibility and continuity of clamping action.

[0043] A spring 33 is fixedly connected to the second transmission rod 32. The side of the spring 33 away from the second transmission rod 32 is fixedly connected to the fourth transmission rod 34. By adding a spring 33 between the second transmission rod 32 and the fourth transmission rod 34, an elastic transmission node is constructed. When transmitting power, the two can adaptively adjust their relative positions through the compression or tension of the spring 33, which can alleviate the rigid impact caused by workpiece size tolerance or transmission error and enhance the fault tolerance of the transmission component 2 to workpiece size fluctuation.

[0044] A slot is provided on the side of the mounting frame 1 near the second transmission rod 32. A limit rod is fixedly connected to the second transmission rod 32. The limit rod on the second transmission rod 32 is slidably connected in the slot on the mounting frame 1. An oblique hole is provided on the lower pressure block 31. The second transmission rod 32 is slidably connected in the oblique hole on the lower pressure block 31. Through the guiding constraint of the limit rod and the slot of the mounting frame 1, the movement trajectory of the second transmission rod 32 is limited to a straight line. This ensures that the second transmission rod 32 can slide smoothly in the preset direction when it is moved by the first transmission rod 25, avoiding the inaccuracy of the lower pressure block 31 due to movement deviation, thereby ensuring the stability of the axial downward pressure positioning.

[0045] Working principle: such as Figures 1 to 7 As shown, when clamping the top tooth is required during processing, simply start the motor 211. The motor 211 drives the first connecting rod 24 to rotate. The first connecting rod 24 then moves the first transmission frame 22 to slide on the mounting frame 1, causing the first transmission frame 22 to rotate around the motor 211. This causes the first transmission frame 22 to displace the second rotating shaft 27, resulting in the first transmission rod 25 rotating on the first rotating shaft 26 fixed to the second transmission frame 23. The side of the first transmission rod 25 away from the second rotating shaft 27 then drives the third transmission rod 28 to slide inward into the fixed frame 21, causing the clamping frame 29 to move inward to clamp the top tooth.

[0046] At the same time, when the first transmission rod 25 rotates, it will drive the fourth transmission rod 34 to move, causing the second transmission rod 32 to slide on the mounting frame 1, and the second transmission rod 32 to slide in the inclined groove on the lower pressure block 31, causing the lower pressure block 31 to slide down, causing the lower pressure block 31 to drive the connecting frame 35 to slide down, and causing the second connecting rod 36 to drive the second rotating shaft 27 to slide down, thus achieving complete clamping of the top tooth.

[0047] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A positioning tool for machining a workpiece on a process sewing machine, comprising a mounting frame (1), characterized in that, Also includes: The transmission assembly (2) is placed in the mounting frame (1), the transmission assembly (2) includes a fixed frame (21) fixedly connected to the mounting frame (1), a third transmission rod (28) is slidably connected to the fixed frame (21), a first transmission rod (25) is connected to the third transmission rod (28), a second transmission frame (23) and a first transmission frame (22) are slidably connected to the first transmission rod (25), a first connecting rod (24) is slidably connected to the second transmission frame (23), and the first connecting rod (24) is slidably connected to the bottom of the first transmission frame (22). A motor (211) is fixedly connected to one side of the mounting frame (1) close to the second transmission frame (23), and the output end of the motor (211) is fixedly connected with the first connecting rod (24). The lower pressing assembly (3) includes a lower pressing block (31) slidably connected to the mounting frame (1), a second transmission rod (32) slidably connected to the lower pressing block (31), a fourth transmission rod (34) connected to the second transmission rod (32), and the fourth transmission rod (34) is fixedly connected to one end of the first transmission rod (25) away from the clamping frame (29). A connecting frame (35) is fixedly connected to the lower pressing block (31), a second connecting rod (36) is fixedly connected to the connecting frame (35), and a rubber frame (37) is fixedly connected to the second connecting rod (36).

2. The positioning tool for machining the workpiece of the process sewing machine top tooth according to claim 1, characterized in that: An annular groove is formed in one side of the mounting frame (1) close to the first transmission frame (22), the first transmission frame (22) is slidably connected to the annular groove of the mounting frame (1), a slot is formed in one side of the first transmission frame (22) close to the first connecting rod (24), the first connecting rod (24) is slidably connected to the slot of the first transmission frame (22), the second transmission frame (23) is fixedly connected to the mounting frame (1), a slot is formed in the second transmission frame (23), and the first connecting rod (24) is slidably connected to the slot of the second transmission frame (23).

3. The process sewing machine top tooth workpiece machining positioning tooling apparatus according to claim 2, wherein: The first transmission rod (25) is rotatably connected with a first rotating shaft (26) and a second rotating shaft (27), the first rotating shaft (26) is rotatably connected to the second transmission frame (23), and the second rotating shaft (27) is rotatably connected to the first transmission frame (22).

4. The process sewing machine top tooth workpiece machining positioning tooling apparatus according to claim 3, characterized in that: The bottom of the lower pressing block (31) is fixedly connected with a spring (33), and the side of the spring (33) away from the lower pressing block (31) is fixedly connected in the mounting frame (1).

5. The process sewing machine top tooth workpiece machining positioning tooling apparatus of claim 4, wherein: The third transmission rod (28) is fixedly connected with a universal joint (210), and the side of the universal joint (210) away from the third transmission rod (28) is fixedly connected to the first transmission rod (25).

6. The process sewing machine top tooth workpiece machining positioning tooling apparatus of claim 1, wherein: The second transmission rod (32) is fixedly connected with a spring (33), and the side of the spring (33) away from the second transmission rod (32) is fixedly connected with the fourth transmission rod (34).

7. The process sewing machine top tooth workpiece machining positioning tooling apparatus of claim 1, wherein: The installation frame (1) is provided with a slot on one side close to the second transmission rod (32), the second transmission rod (32) is fixedly connected with a limiting rod, the limiting rod on the second transmission rod (32) is slidingly connected in the slot on the installation frame (1), and the lower pressing block (31) is provided with an inclined hole.

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