Self-tensioning mechanical chuck

Abstract

The utility model discloses a kind of self-tightening mechanical chucks, comprising: two clamp components, two clamp components are diametrically opposed to be set, each clamp component includes moving frame, tight inner shaft, tight claw ring, tight claw and gland shaft, one end of tight inner shaft passes through moving frame, several openings are set on tight claw ring, each opening is equipped with a tight claw, the other end of tight inner shaft is inserted into tight claw ring, one end of gland shaft is inserted into the other end of tight inner shaft and is connected with tight inner shaft, gland shaft is connected with tight claw ring, gland shaft and tight inner shaft are connected with tight claw. Through the application of the utility model, a kind of self-tightening mechanical chuck is presented, which can effectively solve the problem of traditional chuck winding core extraction difficulty, when winding core needs to be taken out, only need to control moving frame away from each other, with the help of first spring and second spring release elastic potential energy, tight claw can be reset quickly, and the problem of winding core extraction difficulty is solved.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, and in particular to a self-tensioning mechanical chuck. Background Technology

[0002] In general machining, especially in production processes involving winding, the tension of the core plays a decisive role in winding quality. Inadequate core tension will affect the final product quality. However, existing tensioning chucks have revealed a series of serious problems in practical use, with the difficulty of removing the core being particularly prominent. Traditional tensioning chucks rely heavily on mechanical structures to achieve tension. After winding, excessive friction between the core and the chuck, coupled with inevitable deformation and wear during long-term use, makes the chuck prone to jamming the core. When core removal is needed, operators often expend significant manpower and time on disassembly. In extreme cases, the chuck may jam the core too tightly, making it impossible to remove it using conventional methods. In such situations, operators must resort to additional tools or equipment, such as pry bars or jacks, but the use of these tools may pose a potential risk of damage to the equipment and the core. Utility Model Content

[0003] In view of this, in order to solve the above problems, the purpose of this utility model is to provide a self-tensioning mechanical chuck, comprising: two clamping assemblies, the two clamping assemblies being arranged opposite each other, each clamping assembly including a movable frame, a tensioning inner shaft, a tensioning claw ring, a tensioning claw, and a pressure cap shaft, one end of the tensioning inner shaft passing through the movable frame, the tensioning claw ring having a plurality of openings evenly distributed circumferentially, each opening containing a tensioning claw, the other end of the tensioning inner shaft extending into the tensioning claw ring, one end of the pressure cap shaft extending into the other end of the tensioning inner shaft and connected to the tensioning inner shaft, the pressure cap shaft being threadedly connected to the tensioning claw ring, and both the pressure cap shaft and the tensioning inner shaft being connected to the tensioning claw.

[0004] In another preferred embodiment, it further includes: a first bearing and a second bearing, the first bearing being disposed on one side of the movable frame and the second bearing being disposed on the other side of the movable frame, and one end of the tensioning inner shaft passing through the first bearing and the second bearing in sequence.

[0005] In another preferred embodiment, the device further includes: a fastening screw; a first mounting hole is provided through the tensioning claw; a second mounting hole is provided on the inner tensioning shaft and communicates with the first mounting hole; a third mounting hole is provided on the pressure cap shaft and is directly opposite to the first mounting hole; the third mounting hole communicates with the second mounting hole; one end of the fastening screw passes through the first mounting hole and the second mounting hole in sequence and is threaded into the third mounting hole; and the tensioning claw is connected to the pressure cap shaft through the fastening screw.

[0006] In another preferred embodiment, a first spring is sleeved around the fastening screw, the first spring is disposed in the first mounting hole, one end of the first spring is connected to the inner wall of the first mounting hole, and the other end of the first spring is connected to the head of the fastening screw.

[0007] In another preferred embodiment, a second spring is sleeved around the periphery of the pressure cap shaft, one end of the second spring abutting against the inner wall of the tensioning inner shaft, and the other end of the second spring abutting against the outer wall of the pressure cap shaft.

[0008] In another preferred embodiment, the outer diameter of the other end of the tensioning inner shaft is set to gradually decrease along the direction close to the pressure cap shaft.

[0009] In another preferred embodiment, a groove is provided on the outer wall of the tensioning inner shaft.

[0010] In another preferred embodiment, the tensioning claw has a locking block disposed within the locking slot.

[0011] The present invention, by adopting the above-mentioned technical solution, has the following positive effects compared with the prior art: By applying the present invention, a self-tensioning mechanical chuck is proposed, which can effectively solve the problem of difficult core removal by traditional chucks. When the core needs to be removed, it is only necessary to control the moving frames to move away from each other. With the help of the first and second springs to release the elastic potential energy, the tensioning claws can be quickly reset, releasing the grip on the core and allowing the core to be easily removed. This not only helps to save a lot of manpower and time for removing the core and avoids the risk of fatigue and injury to operators due to laborious disassembly, but also eliminates the potential threat of damage to the equipment and core caused by using additional tools, effectively protecting the equipment and core. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a self-tensioning mechanical chuck before clamping according to the present invention.

[0013] In the attached image:

[0014] 1. Moving frame; 2. Tensioning inner shaft; 3. Tensioning claw ring; 4. Tensioning claw; 5. Pressure cover shaft; 6. First bearing; 7. Second bearing; 8. Fastening screw; 9. First spring; 10. Second spring; 200. Second mounting hole; 210. Slot; 300. Opening; 400. First mounting hole; 410. Locking block. Detailed Implementation

[0015] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front", "back", "horizontal", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0017] It should be noted that the terms "horizontal" and "vertical" in this utility model are used to describe approximate positional relationships, and not strictly "horizontal plane" or "vertical plane".

[0018] like Figure 1 The diagram shows a preferred embodiment of a self-tensioning mechanical chuck, comprising: two clamping assemblies arranged opposite each other; each clamping assembly including a movable frame 1, a tensioning inner shaft 2, a tensioning claw ring 3, a tensioning claw 4, and a pressure cap shaft 5; one end of the tensioning inner shaft 2 passes through the movable frame 1; the tensioning claw ring 3 has a plurality of openings 300 evenly spaced circumferentially, and a tensioning claw 4 is disposed in each opening 300; the other end of the tensioning inner shaft 2 extends into the tensioning claw ring 3; one end of the pressure cap shaft 5 extends into the other end of the tensioning inner shaft 2 and is connected to the tensioning inner shaft 2; the pressure cap shaft 5 is threadedly connected to the tensioning claw ring 3; and both the pressure cap shaft 5 and the tensioning inner shaft 2 are connected to the tensioning claw 4.

[0019] Furthermore, as a preferred embodiment, it further includes: a first bearing 6 and a second bearing 7, the first bearing 6 being disposed on one side of the movable frame 1 and the second bearing 7 being disposed on the other side of the movable frame 1, with one end of the tensioning inner shaft 2 passing through the first bearing 6 and the second bearing 7 in sequence. Furthermore, the first bearing 6 and the second bearing 7 can provide stable support for the tensioning inner shaft 2, reducing friction during movement and rotation of the tensioning inner shaft 2, and ensuring that the tensioning inner shaft 2 can move smoothly with the movable frame 1.

[0020] Furthermore, as a preferred embodiment, it also includes: a fastening screw 8; a first mounting hole 400 is provided through the tensioning claw 4; a second mounting hole 200 is provided on the tensioning inner shaft 2, which communicates with the first mounting hole 400; a third mounting hole is provided on the pressure cap shaft 5, which is directly opposite to the first mounting hole 400; the third mounting hole communicates with the second mounting hole 200; one end of the fastening screw 8 passes through the first mounting hole 400 and the second mounting hole 200 in sequence and is threaded into the third mounting hole; the tensioning claw 4 is connected to the pressure cap shaft 5 through the fastening screw 8.

[0021] Furthermore, in a preferred embodiment, a first spring 9 is sleeved around the fastening screw 8. The first spring 9 is disposed within the first mounting hole 400, with one end connected to the inner wall of the first mounting hole 400 and the other end connected to the head of the fastening screw 8. Furthermore, when the chuck loosens the paper roll, the first spring 9 can release its elastic potential energy, providing a downward contraction force to the tensioning claw 4, assisting the tensioning claw 4 in returning from a tensioned state to a relaxed state, thus facilitating the removal of the paper roll.

[0022] Furthermore, as a preferred embodiment, a second spring 10 is sleeved around the periphery of the pressure cap shaft 5. One end of the second spring 10 abuts against the inner wall of the tensioning inner shaft 2, and the other end of the second spring 10 abuts against the outer wall of the pressure cap shaft 5.

[0023] Furthermore, as a preferred embodiment, the outer diameter of the other end of the tensioning inner shaft 2 is gradually reduced along the direction close to the pressure cap shaft 5 and forms a tapered structure.

[0024] Furthermore, as a preferred embodiment, the lower end of the tensioning claw 4 is inclined to facilitate its interaction with the tapered structure of the tensioning inner shaft 2.

[0025] Furthermore, as a preferred embodiment, a slot 210 is provided on the outer wall of the tensioning inner shaft 2.

[0026] Furthermore, as a preferred embodiment, the tensioning claw 4 has a locking block 410, which is disposed within the locking slot 210.

[0027] The working principle of this utility model is as follows: In use, the roll of paper is first placed between two opposing clamping assemblies. The two opposing movable frames 1 are then brought closer together horizontally. The two tensioning inner shafts 2 also move closer together with the movable frames 1. Simultaneously, the pressure cap shaft 5, tensioning claw rings 3, and tensioning claws 4 all move together until both tensioning claw rings 3 extend into the roll of paper. At this point, the tensioning claws 2 are still in a relaxed state. The two movable frames 1 continue to move closer until the tensioning claw rings 3 abut against the outer wall of the roll. Under the resistance of the roll, the movable frames 1 and the tensioning inner shafts 2 can continue to move closer together, but the tensioning claw rings 3 do not... As the tensioning claw ring 3 moves closer to the tensioning inner shaft 2, it moves towards the moving frame 1. The pressure cap shaft 5, connected to the tensioning claw ring 3, also moves towards the moving frame 1 relative to the tensioning inner shaft 2, thereby compressing the second spring 10 and giving it greater elastic potential energy. At the same time, the tensioning claw 4 also moves towards the moving frame 1 relative to the tensioning inner shaft 2 as the tensioning claw ring 3 moves. The locking block 410 slides in the locking groove 210. The lower inclined part of the tensioning claw 4 cooperates with the tapered structure of the tensioning inner shaft 2, and the tensioning claw 4 gradually extends out of the opening to support the paper roll, thereby realizing the tensioning function. When the winding task is completed and the roll of paper needs to be removed, the operator can control the two moving frames 1 to move away from each other in the horizontal direction. During the process of the two moving frames 1 moving away from each other, the second spring 10 can release the previously stored elastic potential energy to push the pressure cover shaft 5 to move away from the moving frame 1 relative to the tensioning inner shaft 2, thereby pushing the tensioning claw ring 3 to reset. During this process, there is a gap between the lower inclined part of the tensioning claw 4 and the tapered structure of the tensioning inner shaft 2. The first spring 9 also releases elastic potential energy to cause the tensioning claw 4 to reset, so that the tensioning claw 4 returns from the tensioned state to the relaxed state, thereby enabling the chuck to automatically relax and making it easy to remove the roll of paper.

[0028] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A self-tensioning mechanical chuck, characterized in that, include: Two clamping assemblies are arranged opposite each other. Each clamping assembly includes a movable frame, a tensioning inner shaft, a tensioning claw ring, a tensioning claw, and a pressure cap shaft. One end of the tensioning inner shaft passes through the movable frame. The tensioning claw ring has several openings evenly distributed around its circumference. Each opening contains a tensioning claw. The other end of the tensioning inner shaft extends into the tensioning claw ring. One end of the pressure cap shaft extends into the other end of the tensioning inner shaft and is connected to the tensioning inner shaft. The pressure cap shaft is threadedly connected to the tensioning claw ring. Both the pressure cap shaft and the tensioning inner shaft are connected to the tensioning claw.

2. The self-tensioning mechanical collet chuck of claim 1, wherein, Also includes: A first bearing and a second bearing are provided, the first bearing being disposed on one side of the movable frame and the second bearing being disposed on the other side of the movable frame, and one end of the tensioning inner shaft passing through the first bearing and the second bearing in sequence.

3. The self-tensioning mechanical chuck according to claim 1, characterized in that, Also includes: The fastening screw has a first mounting hole through the tensioning claw, a second mounting hole communicating with the first mounting hole on the inner tensioning shaft, and a third mounting hole opposite to the first mounting hole on the pressure cap shaft. The third mounting hole communicates with the second mounting hole. One end of the fastening screw passes through the first mounting hole and the second mounting hole in sequence and is threaded into the third mounting hole. The tensioning claw is connected to the pressure cap shaft through the fastening screw.

4. The self-tightening mechanical collet of claim 3, wherein, A first spring is sleeved around the fastening screw. The first spring is disposed in the first mounting hole. One end of the first spring is connected to the inner wall of the first mounting hole, and the other end of the first spring is connected to the head of the fastening screw.

5. The self-tightening mechanical collet chuck of claim 1 wherein, A second spring is sleeved around the periphery of the pressure cap shaft. One end of the second spring abuts against the inner wall of the tensioning inner shaft, and the other end of the second spring abuts against the outer wall of the pressure cap shaft.

6. The self-tensioning mechanical chuck according to claim 1, characterized in that, The outer diameter of the other end of the tensioning inner shaft is set to gradually decrease along the direction close to the pressure cap shaft.

7. The self-tightening mechanical collet chuck of claim 1 wherein, A slot is provided on the outer wall of the tensioning inner shaft.

8. The self-tightening mechanical collet chuck of claim 7, wherein, The tensioning claw has a locking block, which is disposed within the locking slot.

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