Special three-line machine for sewing protective clothing

Abstract

The utility model discloses a special three-line machine for sewing protective clothing, which relates to the technical field of three-line machines and comprises a workbench and a fixing component, the fixing component is arranged at the top of the workbench and comprises a connecting frame slidably connected to the top of the workbench, a square plate is fixedly connected to the connecting frame, and the square plate is fixedly connected to the workbench. A square plate on the connecting frame is fixedly connected with a fixing part, the fixing part is rotatably connected with a fastening rod, the fastening rod is slidably connected with a second transmission rod, one end, far away from the fixing part, of the second transmission rod is fixedly connected with a universal joint, and one side, far away from the second transmission rod, of the universal joint is fixedly connected to the workbench; during work, a bobbin is placed on the fixing piece, the connecting frame is pulled, the connecting frame slides on the top of the workbench, the second transmission rod is pulled to enable the fastening rod to tightly abut against the bobbin, and the problems that yarn is wound and knotted and supply is interrupted due to shaking of the bobbin are completely eradicated. And continuous output of stitches is ensured.

Description

Technical Field

[0001] This utility model relates to the field of three-thread sewing machine technology, specifically a three-thread sewing machine for protective clothing. Background Technology

[0002] With the frequent occurrence of global public health emergencies and the increasing demands for personal protection in various high-risk work scenarios (such as chemical, medical, and firefighting), the market demand for protective clothing has experienced explosive growth. Traditional general-purpose sewing equipment has gradually revealed many limitations in sewing protective clothing, failing to meet the requirements for sewing quality, efficiency, and special processes. This urgently necessitates the development of specialized equipment specifically for sewing protective clothing, leading to the emergence of the three-thread sewing machine for protective clothing.

[0003] Existing technology uses a traditional tray-type support on which the yarn spools are placed directly without an effective fixing device. This makes the yarn spools prone to displacement or even slippage due to vibration during high-speed operation of the equipment. For example, when the three-thread machine is running at a speed of thousands of revolutions per minute, the vibration generated is transmitted to the yarn spool support, and the loosely placed yarn spools may slowly deviate from their original position. Once the deviation is excessive, it will not only cause the yarn to become tangled and knotted, affecting the normal supply of sewing thread, but may also cause the yarn spools to roll off, interrupting the sewing process, resulting in material waste and production delays. Utility Model Content

[0004] The purpose of this invention is to provide a three-thread sewing machine specifically for protective clothing, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a three-thread sewing machine specifically for protective clothing, comprising:

[0006] Workbench;

[0007] A fixing assembly is placed on top of a workbench. The fixing assembly includes a connecting frame slidably connected to the top of the workbench, a square plate fixedly connected to the connecting frame, a fixing member fixedly connected to the square plate on the connecting frame, a fastening rod rotatably connected to the fixing member, a second transmission rod slidably connected to the fastening rod, a universal joint fixedly connected to one end of the second transmission rod away from the fixing member, and a side of the universal joint away from the second transmission rod fixedly connected to the workbench. A sliding block is fixedly connected to the connecting frame, a rocker arm slidably connected to the sliding block, the rocker arm rotatably connected to the workbench, a first transmission rod fixedly connected to the rocker arm, and a rubber limiting frame fixedly connected to the first transmission rod.

[0008] The sewing machine body is slidably connected to one side of the worktable. A transmission plate is fixedly connected to the sewing machine body, a lead screw is threadedly connected to the transmission plate, and a motor is fixedly connected to the lead screw.

[0009] Furthermore, the fastening rod is rotatably connected to the fixing component via a rotating shaft.

[0010] The above technical solution is adopted: by setting a fastening rod that is rotatably connected to the fixing part through a rotating shaft, when the second transmission rod moves the fastening rod to gradually make it tend to a vertical state, it will more tightly press against the spool.

[0011] Furthermore, the rocker arm is rotatably connected to the worktable via a rotating shaft.

[0012] The above technical solution is adopted: by setting a rocker arm that is rotatably connected to the worktable, when in use, the rocker arm drives the first transmission rod to press down and clamp the motor, so as to prevent the motor from rotating on its own.

[0013] Furthermore, the motor is slidably connected within the rubber limiting frame.

[0014] The above technical solution involves setting the motor to slide within a rubber limit frame, thereby limiting the motor's movement using the rubber limit frame.

[0015] Furthermore, a square rod is rotatably connected to the lead screw, and the square rod on the lead screw is fixedly connected to the worktable.

[0016] The above technical solution involves a square rod rotatably connected to a lead screw. When the lead screw rotates, it causes the square rod to slide on the worktable.

[0017] Furthermore, the transmission plate is slidably connected to the worktable.

[0018] The above technical solution involves setting a transmission plate that is slidably connected to the worktable, using the worktable to limit the transmission plate and prevent it from rotating.

[0019] Furthermore, the connecting frame is threaded with bolts.

[0020] The above technical solution involves threading bolts onto the connecting frame, which are then screwed into the workbench during use to secure the connecting frame.

[0021] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0022] In this invention, during operation, the spool is placed on the fixed part, and the connecting frame is pulled to slide on the top of the workbench. When the second transmission rod is pulled, it causes the fastening rod to tightly press against the spool, thus eliminating the problems of yarn tangling and knotting and supply interruption caused by the spool shaking, and ensuring continuous output of sewing thread.

[0023] In this invention, when the connecting frame moves away from the lead screw, its sliding connection with the sliding block causes the rocker arm inside the sliding block to shift. During this process, the rocker arm moves downwards due to the pushing force of the moving connecting frame, causing the first transmission rod, which is fixedly connected to the rocker arm, to tilt upwards. This tilting motion of the first transmission rod is then transmitted to the rubber limit frame, causing the rubber limit frame to tilt upwards. Once the rubber limit frame tilts upwards, the motor disengages from its limit position. Even if the motor starts, it can only rotate on its own axis and cannot drive the lead screw, thus preventing accidental injury to workers. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a three-thread sewing machine specifically designed for sewing protective clothing.

[0025] Figure 2 This is a schematic diagram showing the position of the lead screw on a three-thread sewing machine specifically designed for sewing protective clothing.

[0026] Figure 3 This is a schematic diagram showing the position of the second transmission rod of a three-thread sewing machine specifically designed for sewing protective clothing.

[0027] Figure 4 A three-thread sewing machine specifically designed for sewing protective clothing Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0028] Numbering on the map:

[0029] 1. Workbench;

[0030] 2. Fixing component; 21. Connecting frame; 22. Universal joint; 23. Sliding block; 24. Rocker arm; 25. Rotating shaft; 26. First transmission rod; 27. Rubber limiting frame; 28. Second transmission rod; 29. ​​Fixing component; 210. Fastening rod;

[0031] 3. Sewing machine body; 31. Motor; 32. Lead screw; 33. Transmission plate. Detailed Implementation

[0032] 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.

[0033] like Figures 1-4 As shown, this utility model provides a technical solution: a three-thread sewing machine specifically for protective clothing, comprising:

[0034] Workbench 1;

[0035] Fixed component 2 is placed on the top of workbench 1. Fixed component 2 includes a connecting frame 21 slidably connected to the top of workbench 1. A square plate is fixedly connected to the connecting frame 21. A fixing member 29 is fixedly connected to the square plate on the connecting frame 21. A fastening rod 210 is rotatably connected to the fixing member 29. A second transmission rod 28 is slidably connected to the fastening rod 210. A universal joint 22 is fixedly connected to one end of the second transmission rod 28 away from the fixing member 29. The side of the universal joint 22 away from the second transmission rod 28 is fixedly connected to the workbench 1. A sliding block 23 is fixedly connected to the connecting frame 21. A rocker arm 24 is slidably connected to the sliding block 23. The rocker arm 24 is rotatably connected to the workbench 1. A first transmission rod 26 is fixedly connected to the rocker arm 24. A rubber limiting frame 27 is fixedly connected to the first transmission rod 26.

[0036] The sewing machine body 3 is slidably connected to one side of the workbench 1. A transmission plate 33 is fixedly connected to the sewing machine body 3. A lead screw 32 is threadedly connected to the transmission plate 33. A motor 31 is fixedly connected to the lead screw 32.

[0037] In this invention, during operation, the bobbin is placed on the fixing member 29. By pulling the connecting frame 21, the connecting frame 21 slides on the top of the workbench 1. When the second transmission rod 28 is pulled, it causes the fastening rod 210 to tightly press against the bobbin, thus eliminating the problems of yarn tangling and knotting and supply interruption caused by the bobbin shaking, and ensuring continuous output of sewing thread.

[0038] Furthermore, such as Figures 1 to 4 As shown, the fastening rod 210 is rotatably connected to the fixing member 29 via a rotating shaft. By setting the fastening rod 210 to be rotatably connected to the fixing member 29 via a rotating shaft, when the second transmission rod 28 moves the fastening rod 210 to gradually tend towards a vertical state during use, it will more tightly press against the spool.

[0039] The rocker arm 24 is rotatably connected to the worktable 1 via the rotating shaft 25. By setting the rocker arm 24 to be rotatably connected to the worktable 1, when in use, the rocker arm 24 drives the first transmission rod 26 to press down and clamp the motor 31, preventing the motor 31 from rotating on its own.

[0040] The motor 31 is slidably connected within the rubber limit frame 27. By setting the motor 31 to be slidably connected within the rubber limit frame 27, the rubber limit frame 27 is used to limit the motor 31.

[0041] A square rod is rotatably connected to the lead screw 32. The square rod on the lead screw 32 is fixedly connected to the worktable 1. By rotatably connecting the square rod to the lead screw 32, when the lead screw 32 is rotated, it will drive the square rod to slide on the worktable 1.

[0042] The transmission plate 33 is slidably connected to the worktable 1. By setting the transmission plate 33 to be slidably connected to the worktable 1, the worktable 1 is used to limit the transmission plate 33 and prevent the transmission plate 33 from rotating.

[0043] The above solution also has the problem of not proposing how to fix the connecting frame 21, such as... Figures 1 to 3 As shown, bolts are threaded onto the connecting frame 21. By threading bolts onto the connecting frame 21, the bolts can be screwed into the workbench 1 during use, making it easy to fix the connecting frame 21.

[0044] The working principle provided by this utility model is as follows: Figures 1 to 4 As shown:

[0045] When in use, first place the spool directly on the fixing part 29, and the worker pulls the connecting frame 21 with external force, so that the connecting frame 21 slides on the workbench 1 towards the side closer to the lead screw 32;

[0046] During this process, the second transmission rod 28 will be stretched, and the end of the second transmission rod 28 away from the workbench 1 will slide down from the fixing part 29, and push the fastening rod 210 to slide up, so that the fastening rod 210 tightly abuts against the spool, preventing it from falling off and enhancing its stability.

[0047] When the connecting frame 21 slides towards the side closer to the lead screw 32, the sliding block 23 slides on the rocker arm 24, causing the side of the rocker arm 24 closer to the connecting frame 21 to be driven upward, causing the end of the rocker arm 24 away from the connecting frame 21 to be driven downward by the first transmission rod 26 to clamp the motor 31.

[0048] When the position of the sewing machine body 3 needs to be adjusted, the motor 31 is started to rotate the lead screw 32, which can adjust the position of the transmission plate 33. During the disassembly of the spool, the connecting frame 21 moves away from the lead screw 32, which will cause the rocker arm 24, which is slidably connected in the sliding block 23, to be moved downward, causing the first transmission rod 26 to tilt upward, which in turn causes the rubber limit frame 27 to tilt upward, preventing it from rotating the lead screw 32 and accidentally injuring the workers.

[0049] 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 three-thread sewing machine specifically for protective clothing, characterized in that, include: Workbench (1); A fixing component (2) is placed on top of the workbench (1). The fixing component (2) includes a connecting frame (21) slidably connected to the top of the workbench (1). A square plate is fixedly connected to the connecting frame (21). A fixing member (29) is fixedly connected to the square plate on the connecting frame (21). A fastening rod (210) is rotatably connected to the fixing member (29). A second transmission rod (28) is slidably connected to the fastening rod (210). The second transmission rod (28) is located away from the fixing component. One end of component (29) is fixedly connected to a universal joint (22). The side of the universal joint (22) away from the second transmission rod (28) is fixedly connected to the workbench (1). A sliding block (23) is fixedly connected to the connecting frame (21). A rocker arm (24) is slidably connected to the sliding block (23). The rocker arm (24) is rotatably connected to the workbench (1). A first transmission rod (26) is fixedly connected to the rocker arm (24). A rubber limiting frame (27) is fixedly connected to the first transmission rod (26). The sewing machine body (3) is slidably connected to one side of the workbench (1). A transmission plate (33) is fixedly connected to the sewing machine body (3). A lead screw (32) is threadedly connected to the transmission plate (33). A motor (31) is fixedly connected to the lead screw (32).

2. The three-thread sewing machine for protective clothing as described in claim 1, characterized in that: The fastening rod (210) is rotatably connected to the fixing member (29) via a rotating shaft.

3. The three-thread sewing machine for protective clothing as described in claim 1, characterized in that: The rocker arm (24) is rotatably connected to the worktable (1) via a rotating shaft (25).

4. The three-thread sewing machine for protective clothing as described in claim 3, characterized in that: The motor (31) is slidably connected within the rubber limiting frame (27).

5. A three-thread sewing machine for protective clothing as described in claim 1, characterized in that: A square rod is rotatably connected to the lead screw (32), and the square rod on the lead screw (32) is fixedly connected to the worktable (1).

6. The three-thread sewing machine for protective clothing as described in claim 1, characterized in that: The transmission plate (33) is slidably connected to the worktable (1).

7. A three-thread sewing machine for protective clothing as described in claim 6, characterized in that: The connecting frame (21) is threaded with bolts.

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