A thread tension mechanism of a raincoat production overlock machine

Abstract

The utility model relates to the technical field of overlock machine, concretely is a raincoat production overlock machine's thread material tensioning mechanism, include: overlock machine main part, the front of overlock machine main part is equipped with fixed threaded rod, the outside of fixed threaded rod is from back to front in proper order and is equipped with inner wool pad, inner clamping piece, outer wool pad and outer clamping piece, install tensioning structure and operation structure on fixed threaded rod, the tensioning structure includes the movable piece, the movable piece is set up in the outside rear end of fixed threaded rod, the back of movable piece is equipped with the accommodation groove, the utility model discloses a tensioning structure is set up between the adhering surface of inner wool pad and fixed threaded rod, and the spring can restore when pushing when the knob is unscrewed and removes the location of the part on fixed threaded rod, can push movable piece and move on fixed threaded rod to push the part and move to the front end of fixed threaded rod, and the convenient use of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of overlock machine technology, specifically to a thread tensioning mechanism for an overlock machine used in raincoat production. Background Technology

[0002] Raincoats are waterproof garments made of waterproof fabric, mainly used to protect the body from rain in rainy or humid environments. During the production of raincoats, to prevent water leakage at the joint between two pieces of fabric, an overlock machine is used to bind the joint between the two pieces of fabric.

[0003] The thread clamp is an important mechanism on the overlock machine. It uses two sets of clamps to hold the thread. By rotating the thread clamp, the tightness of the clamps can be adjusted, thereby changing the thread feeding resistance and making the stitch stable. In actual use, the clamps and wool pads will age and need to be replaced. However, the clamps and wool pads are in contact with the connecting rod for a long time and are affected by lubricant and thread ends, which makes it difficult to remove the clamps and wool pads from the connecting rod. It is often necessary to use scissors to pry off the clamps and wool pads, which is inconvenient and affects the replacement efficiency of the thread clamp.

[0004] Therefore, in order to solve the above problems, a thread tensioning mechanism for a raincoat overlock machine is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a thread tensioning mechanism for a raincoat overlock machine, in order to solve the problem mentioned in the background art that the clamps and wool pads in the prior art will age and need to be replaced. However, the clamps and wool pads are attached to the connecting rod for a long time and are affected by lubricant and thread ends, which makes it difficult to remove the clamps and wool pads from the connecting rod. It is often necessary to use scissors to pry off the clamps and wool pads, which is inconvenient and affects the replacement efficiency of the thread clamp.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a thread tensioning mechanism for a raincoat overlock machine, comprising: an overlock machine body, wherein a fixed threaded rod is installed on the front of the overlock machine body, and an inner wool pad, an inner clamping piece, an outer wool pad, and an outer clamping piece are sequentially sleeved on the outer side of the fixed threaded rod from back to front; The fixed threaded rod is equipped with a tensioning structure and an operating structure. The tensioning structure includes a movable plate, which is sleeved on the outer rear end of the fixed threaded rod. A storage groove is provided on the back of the movable plate, and a push spring is fixedly connected to the inner wall of the storage groove. The operating structure includes an abutment sleeve, which is fitted onto the outer front end of the fixed threaded rod. Friction grooves are formed on the outer wall of the abutment sleeve. An abutment spring is fixedly connected to the inside of the front side of the abutment sleeve. A toothed ring is fixedly connected to the front end of the friction grooves. A knob is movably installed at the front end of the fixed threaded rod via a thread.

[0007] Preferably, the rear end of the push spring abuts against the surface of the fixed threaded rod, and the push spring is retracted inside the receiving groove.

[0008] Preferably, the movable piece, inner wool pad, inner clamping piece, outer wool pad, outer clamping piece, and abutment sleeve are fitted together.

[0009] Preferably, the rear end of the knob is inserted inside the front of the abutment sleeve, the knob is sleeved on the outside of the abutment spring and the toothed ring, and the front of the toothed ring abuts against the inner wall of the knob.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting a tensioning structure between the inner wool pad and the contact surface of the fixed threaded rod, the push spring can return to its original position when the knob is turned down to release the limit on the parts on the fixed threaded rod, and can push the movable piece to move on the fixed threaded rod, so as to push the parts to move towards the front end of the fixed threaded rod, which facilitates the replacement of aging parts and improves the ease of use of the device.

[0011] This utility model, by incorporating a tensioning structure and an operating structure, allows for easy installation. First, the movable piece is fitted onto the fixed threaded rod with the storage groove facing rearward. Next, the inner wool pad, inner clamping piece, outer wool pad, and outer clamping piece are sequentially fitted onto the outside of the fixed threaded rod. Then, the abutment sleeve is fitted onto the fixed threaded rod with the abutment spring and toothed ring facing forward. The knob is then screwed onto the outer front end of the fixed threaded rod. As the toothed ring rotates, it moves rearward on the fixed threaded rod, inserting the rear end of the knob into the abutment sleeve, with the front of the toothed ring abutting the back of the knob. The knob, through the abutment spring, pushes the abutment sleeve, causing... When the movable piece moves to the rear end of the fixed threaded rod, the push spring retracts into the storage groove, and the movable piece, inner wool pad, inner clamping piece, outer wool pad, outer clamping piece, and abutment sleeve are sequentially fitted together. When the parts are aging, the knob is reversed and removed from the fixed threaded rod, which releases the restriction on the parts on the fixed threaded rod. The movable piece is no longer restricted, and the push spring returns to its original position. The push spring then moves the movable piece, inner wool pad, inner clamping piece, outer wool pad, outer clamping piece, and abutment sleeve on the fixed threaded rod, making it easy to remove the aging parts from the fixed threaded rod for replacement, thus improving the ease of maintenance of the device. Attached Figure Description

[0012] Figure 1 This is a front view schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of the structure of this utility model; Figure 3 This is an exploded view of the structure of the fixed threaded rod, tensioning structure and operating structure of this utility model; Figure 4 This is an exploded view of the tensioning structure of this utility model.

[0013] In the diagram: 1. Overlock machine body; 11. Fixed threaded rod; 12. Inner wool pad; 13. Inner clamping plate; 14. Outer wool pad; 15. Outer clamping plate; 2. Tensioning structure; 21. Movable plate; 22. Storage slot; 23. Push spring; 3. Operating structure; 31. Abutting sleeve; 32. Friction texture; 33. Abutting spring; 34. Toothed ring; 35. Knob. Detailed Implementation

[0014] 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.

[0015] Please see Figures 1-4 This utility model provides an embodiment of a thread tensioning mechanism for a raincoat overlock machine: The overlock machine body 1, fixed threaded rod 11, inner wool pad 12, inner clamping plate 13, outer wool pad 14 and outer clamping plate 15 used in this application are products that can be purchased directly on the market. Their principles and connection methods are existing technologies well known to those skilled in the art, so they will not be described in detail here.

[0016] A thread tensioning mechanism for a raincoat overlock machine includes: an overlock machine body 1, a fixed threaded rod 11 installed on the front of the overlock machine body 1, and an inner wool pad 12, an inner clamping piece 13, an outer wool pad 14 and an outer clamping piece 15 sequentially sleeved on the outer side of the fixed threaded rod 11 from back to front. A tensioning structure 2 and an operating structure 3 are installed on the fixed threaded rod 11. The tensioning structure 2 includes a movable piece 21, which is sleeved on the outer rear end of the fixed threaded rod 11. A storage groove 22 is provided on the back of the movable piece 21, and a push spring 23 is fixedly connected to the inner wall of the storage groove 22. The operating structure 3 includes an abutment sleeve 31, which is fitted onto the outer front end of the fixed threaded rod 11. Friction grooves 32 are formed on the outer wall of the abutment sleeve 31. An abutment spring 33 is fixedly connected to the front interior of the abutment sleeve 31. A toothed ring 34 is fixedly connected to the front end of the friction grooves 32. A knob 35 is threadedly installed at the front end of the fixed threaded rod 11. By setting a tensioning structure 2 between the inner wool pad 12 and the mating surface of the fixed threaded rod 11, the push spring 23 can return to its original position when the knob 35 is turned down to release the restriction on the parts on the fixed threaded rod 11. This can push the movable piece 21 to move on the fixed threaded rod 11, thereby pushing the parts to move towards the front end of the fixed threaded rod 11, which facilitates the replacement of aging parts and improves the ease of use of the device.

[0017] Furthermore, the rear end of the push spring 23 abuts against the surface of the fixed threaded rod 11, causing the push spring 23 to retract inside the receiving groove 22, and the push spring 23 provides power for the part to move forward outside the fixed threaded rod 11.

[0018] Furthermore, the movable piece 21, inner wool pad 12, inner clamping piece 13, outer wool pad 14, outer clamping piece 15 and abutting sleeve 31 are fitted together, and the inner clamping piece 13, together with the outer wool pad 14, can clamp the thread.

[0019] Furthermore, the rear end of the knob 35 is inserted inside the front of the abutment sleeve 31. The knob 35 is sleeved on the outside of the abutment spring 33 and the toothed ring 34. The front of the toothed ring 34 abuts against the inner wall of the knob 35. Rotating the knob 35 can adjust the pushing force on the abutment sleeve 31, thereby adjusting the tightness of the clamping of the thread material by the inner clamping plate 13 and the outer wool pad 14.

[0020] Working principle: During installation, first, the movable piece 21 is fitted onto the fixed threaded rod 11, so that the storage groove 22 faces the rear. Then, the inner wool pad 12, inner clamping piece 13, outer wool pad 14, and outer clamping piece 15 are sequentially fitted onto the outside of the fixed threaded rod 11. Next, the abutment sleeve 31 is fitted onto the fixed threaded rod 11, so that the abutment spring 33 and the toothed ring 34 face forward. The knob 35 is screwed onto the outside of the front end of the fixed threaded rod 11 through the thread. When the toothed ring 34 rotates... It will move backward on the fixed threaded rod 11, and the rear end of the knob 35 will be inserted into the abutment sleeve 31. The front of the toothed ring 34 abuts against the back of the knob 35. The knob 35 pushes the abutment sleeve 31 through the abutment spring 33, so that the movable piece 21 moves to the rear end of the fixed threaded rod 11. The push spring 23 then retracts into the storage groove 22, and the movable piece 21, the inner wool pad 12, the inner clamping piece 13, the outer wool pad 14, the outer clamping piece 15 and the abutment sleeve 31 are attached in sequence. When in use, hold the abutment sleeve 31. The friction texture 32 increases the friction between the hand and the abutment sleeve 31, preventing slippage and making the abutment sleeve 31 difficult to operate. Pull the abutment sleeve 31 forward to release the contact between the inner clamping plate 13 and the outer wool pad 14. The inner clamping plate 13 and the outer wool pad 14 can then be separated, making it easy to thread the yarn between them. Release the abutment sleeve 31, and it will return to its original position under the elastic action of the abutment spring 33. The abutment sleeve 31 will then push the outer wool pad 14 closer to the inner clamping plate 13, thus clamping the yarn. By rotating the knob 35 in both directions, the force of the toothed ring 34 on the abutment sleeve 31 through the abutment spring 33 can be adjusted, thereby adjusting the clamping force of the inner clamping plate 13 and the outer wool pad 14 on the yarn to ensure that the tightness of the yarn feed is appropriate. When parts age, reverse knob 35 to remove it from the fixed threaded rod 11, thereby releasing the restriction on the parts on the fixed threaded rod 11. The movable piece 21 loses its restriction, and the push spring 23 returns to its original position. The push spring 23 pushes the movable piece 21, inner wool pad 12, inner clamping piece 13, outer wool pad 14, outer clamping piece 15 and abutment sleeve 31 to move on the fixed threaded rod 11, making it easy to remove the aged parts from the fixed threaded rod 11 for replacement, thus improving the ease of maintenance of the device.

[0021] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A thread tensioning mechanism for a raincoat overlock machine, comprising: The main body (1) of the overlock machine is equipped with a fixed threaded rod (11) on the front side. The outer side of the fixed threaded rod (11) is fitted with an inner wool pad (12), an inner clamping piece (13), an outer wool pad (14) and an outer clamping piece (15) in sequence from back to front. Its features are: The fixed threaded rod (11) is equipped with a tensioning structure (2) and an operating structure (3). The tensioning structure (2) includes a movable piece (21). The movable piece (21) is sleeved on the outer rear end of the fixed threaded rod (11). A storage groove (22) is provided on the back of the movable piece (21). A push spring (23) is fixedly connected to the inner wall of the storage groove (22). The operating structure (3) includes an abutment sleeve (31), which is sleeved on the outer front end of the fixed threaded rod (11). Friction grooves (32) are provided on the outer wall of the abutment sleeve (31). An abutment spring (33) is fixedly connected inside the front side of the abutment sleeve (31). A toothed ring (34) is fixedly connected to the front end of the friction groove (32). A knob (35) is installed on the front end of the fixed threaded rod (11) through a thread.

2. The thread tensioning mechanism of a raincoat overlock machine according to claim 1, characterized in that: The rear end of the push spring (23) abuts against the surface of the fixed threaded rod (11), and the push spring (23) is retracted inside the receiving groove (22).

3. The thread tensioning mechanism of a raincoat overlock machine according to claim 1, characterized in that: The movable piece (21), inner wool pad (12), inner clamping piece (13), outer wool pad (14), outer clamping piece (15) and abutment sleeve (31) are fitted together.

4. The thread tensioning mechanism of a raincoat overlock machine according to claim 1, characterized in that: The rear end of the knob (35) is inserted inside the front of the abutment sleeve (31). The knob (35) is sleeved on the outside of the abutment spring (33) and the toothed ring (34). The front of the toothed ring (34) abuts against the inner wall of the knob (35).

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