Slip shaft with limiting function

Abstract

The utility model discloses a slip shaft with a limiting function. The slip shaft comprises a shaft body, a slip ring, a limiting ring and an elastic piece, the limiting ring is arranged in the mounting groove in a sleeving manner and is positioned on the outer side of the slip rings; the elastic pieces are arranged in the mounting grooves in a sleeved mode, the elastic pieces are matched with the two ends of the elastic pieces to abut against the side walls of the mounting grooves and the side walls of the limiting rings correspondingly, the elastic pieces promote the multiple slip rings to extrude one another through the effect of the limiting rings, and due to the arrangement of the elastic pieces, after the adjacent slip rings are used for a long time, the slip rings can be prevented from being damaged. When the winding device is used, sufficient friction force can still be guaranteed, it is guaranteed that the friction force borne by the slip ring is constant, the situation that due to the fact that the friction force is reduced, slipping occurs due to small tension and pulling force is avoided, and the normal winding process and the winding quality are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of differential shafts, and in particular to a differential shaft with a limiting function. Background Technology

[0002] In the operation of a slitting machine, unwinding and rewinding processes are involved. In actual production, a differential shaft is often used for rewinding. A differential ring is mounted on the differential shaft core. The rewind paper tube and the differential ring are fixed together by a certain means to achieve synchronous rotation, and the film is wound onto the paper tube to achieve rewinding. The differential ring is fitted onto the differential shaft core, and there is a certain friction between the two. The motor drives the differential shaft core to rotate, and through friction, it drives the differential ring and the rewind paper tube to rotate in unison, thus completing the rewinding process. When the tension on a certain differential ring is too high, slippage will occur, ensuring that the rewinding tension remains constant.

[0003] The existing differential shaft uses multiple differential rings that are directly sleeved onto the shaft body. Over time, the distance between adjacent differential rings increases, leading to a decrease in friction between them. This reduces the overall friction on the differential rings, causing slippage even under low tension during the actual winding process. This not only affects the normal winding process but also results in uneven winding due to insufficient tension, impacting the quality of the winding. Therefore, it is necessary to further improve the existing differential shaft structure. Utility Model Content

[0004] In view of this, the present invention addresses the deficiencies of the existing technology and its main purpose is to provide a slip differential shaft with a limiting function, which can effectively solve the problems of reduced friction after long-term use of the existing slip differential shaft, affecting the material collection process and the quality of material collection.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A differential shaft with a limiting function includes a shaft body, a differential ring, a limiting ring, and an elastic element. The outer wall of the shaft body is recessed inward with a mounting groove in the same direction as the shaft body. The differential ring is fitted in the mounting groove, and there are multiple differential rings arranged sequentially along the direction of the mounting groove. The limiting ring is fitted in the mounting groove and located outside the multiple differential rings. The elastic element is fitted in the mounting groove, and its two ends abut against the side wall of the mounting groove and the side wall of the limiting ring, respectively. The elastic element causes the multiple differential rings to squeeze against each other through the action of the limiting ring.

[0007] As a preferred embodiment, the mounting groove has an opening at one end, and a fixing ring is fitted onto the open end of the mounting groove. The fixing ring is fixedly mounted on the shaft and blocks the opening of the mounting groove. One end of the elastic element abuts against the side wall of the fixing ring, and the other end of the elastic element abuts against the side wall of the limiting ring.

[0008] As a preferred embodiment, the outer side of the fixing ring is limited and fixed by bolts that mate with the shaft.

[0009] As a preferred embodiment, the elastic element is a spring.

[0010] As a preferred embodiment, one end of the shaft is integrally formed with a mounting portion that mates with the outside.

[0011] As a preferred embodiment, the differential ring includes a main body, a sliding part, and a limiting member. The outer wall of the main body is recessed with a sliding groove, and the side wall of the sliding groove is recessed with a limiting groove that penetrates the outer wall of the main body. The limiting groove extends circumferentially along the side wall of the main body, and the depth of the limiting groove increases sequentially with the extension direction of the limiting groove. The sliding part is slidably disposed in the sliding groove, and a radially extending movable groove is formed in the sliding part. The movable groove penetrates the outer wall of the sliding part and communicates with the limiting groove. The limiting member extends into both the limiting groove and the movable groove. The limiting member slides back and forth along the limiting groove as the sliding part slides relative to the main body, and moves radially along the movable groove as the depth of the limiting groove changes, thereby extending outward and retracting from the outer wall of the sliding part.

[0012] As a preferred embodiment, the limiting grooves are two symmetrically arranged on the left and right sides of the slide groove, and the two ends of the limiting member extend into the two limiting grooves respectively.

[0013] As a preferred embodiment, the sliding part has an annularly extending groove, and the main body is provided with a limiting post that cooperates with the groove.

[0014] As a preferred embodiment, the limiting grooves are arranged in five equal angles, and correspondingly, the movable grooves and limiting members are also arranged in five equal angles, with each limiting member extending into the corresponding limiting groove and the corresponding movable groove simultaneously.

[0015] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0016] A limiting ring is fitted into the mounting groove and located on the outside of the multiple differential rings; the elastic element is fitted into the mounting groove, and its two ends abut against the side wall of the mounting groove and the side wall of the limiting ring, respectively. The elastic element causes the multiple differential rings to squeeze against each other through the action of the limiting ring. The setting of the elastic element ensures that there is still sufficient friction between adjacent differential rings after a long period of use, ensuring that the friction force on the differential rings is constant, avoiding the situation where slippage occurs under small tension and pulling force due to reduced friction force, and ensuring normal winding process and winding quality.

[0017] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a preferred embodiment of the present utility model;

[0019] Figure 2 This is an enlarged schematic diagram of point A in diagram 1;

[0020] Figure 3 This is a cross-sectional schematic diagram of a preferred embodiment of the present invention.

[0021] Explanation of reference numerals in the attached diagram:

[0022] 10. Shaft 101. Mounting slot

[0023] 11. Retaining ring 12. Bolt

[0024] 13. Installation part 20. Slip ring

[0025] 201. Slide groove; 202. Limiting groove

[0026] 203. Movable groove; 204. Groove.

[0027] 21. Main body 211. Limiting post

[0028] 22. Sliding part; 23. Limiting component

[0029] 30. Limiting ring; 40. Elastic component. Detailed Implementation

[0030] Please refer to Figures 1 to 3 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, which includes a shaft 10, a differential ring 20, a limiting ring 30, and an elastic element 40.

[0031] The outer wall of the shaft 10 is recessed inward with a mounting groove 101 in the same direction as the shaft 10. In this embodiment, the mounting groove 101 has an opening at one end, and a fixing ring 11 is fitted onto the opening end of the mounting groove 101. The fixing ring 11 is fixedly installed on the shaft 10 and blocks the opening of the mounting groove 101. One end of the shaft 10 is integrally formed with a mounting part 13 that mates with the outside. The shaft 10 is fixedly installed with the outside through the mounting part 13.

[0032] The differential ring 20 is fitted into the mounting groove 101. Multiple differential rings 20 are arranged sequentially along the extending direction of the mounting groove 101. In this embodiment, the differential ring 20 includes a main body 21, a sliding part 22, and a limiting member 23. The outer wall of the main body 21 is recessed with a sliding groove 201. The side wall of the sliding groove 201 is recessed with a limiting groove 202 penetrating the outer wall of the main body 21. The limiting groove 202 extends circumferentially along the side wall of the main body 21, and its depth increases sequentially along its extending direction. The sliding part 22 is slidably disposed within the sliding groove 201. The sliding part 22 has a radially extending movable groove 203. The movable groove 203 penetrates the outer wall of the sliding part 22 and is correspondingly connected to the limiting groove 202. The limiting member 23 extends into both the limiting groove 202 and the movable groove 203. The limiting member 23 slides back and forth along the limiting groove 202 as the sliding part 22 slides relative to the main body 21, and moves radially along the movable groove 203 as the depth of the limiting groove 202 changes, thereby extending outward and retracting from the outer wall of the sliding part 22. When the limiting member 23 extends outward from the outer wall of the sliding part 22, it is locked with the external receiving shaft, thereby driving the external receiving shaft to rotate.

[0033] Two limiting grooves 202 are arranged symmetrically on the left and right sides of the sliding groove 201, respectively. The two ends of the limiting member 23 extend into the two limiting grooves 202, ensuring the stability of the limiting member 23 during sliding. An annularly extending groove 204 is provided inside the sliding part 22. A limiting post 211 that cooperates with the groove 204 is provided on the main body 21. Through the cooperation between the main body 21 and the groove 204, the relative sliding range between the sliding part 22 and the main body 21 is further limited. Five limiting grooves 202 are arranged at equal angles. Correspondingly, five movable grooves 203 and five limiting members 23 are also arranged at equal angles. Each limiting member 23 extends simultaneously into its corresponding limiting groove 202 and its corresponding movable groove 204. The arrangement of multiple limiting members 23 makes the clamping process between the limiting member 23 and the external receiving shaft more stable.

[0034] The limiting ring 30 is sleeved in the mounting groove 101 and located outside the plurality of slip rings 20; further, there are two limiting rings 30, which are respectively located on both sides of the plurality of slip rings 20.

[0035] The elastic element 40 is sleeved in the mounting groove 101, with its two ends abutting against the side wall of the mounting groove 101 and the side wall of the limiting ring 30, respectively. The elastic element 40, through the action of the limiting ring 30, causes the multiple differential rings 20 to press against each other, thereby ensuring the frictional force between adjacent differential rings 20. Furthermore, two elastic elements 40 can be provided, working in conjunction with two limiting rings 30, to apply pressure to the two limiting rings 30 respectively. This allows the two limiting rings 30 to simultaneously apply lateral pressure to the multiple differential rings 20 from the outside, further ensuring the frictional force on the differential rings 20. In this embodiment, one end of the elastic element 40 abuts against the side wall of the fixing ring 11, and the other end of the elastic element 40 abuts against the side wall of the limiting ring 30. The outer side of the fixed ring 11 is limited and fixed by bolts 12 that cooperate with the shaft 10. At the same time, the position of the fixed ring 11 can be adjusted by rotating the bolts 12, thereby adjusting the extension and retraction length of the elastic element 40, and thus adjusting the lateral pressure of the differential ring 20. The elastic element 40 is a spring.

[0036] The key design feature of this invention is as follows: a limiting ring is fitted into the mounting groove and located on the outside of multiple differential rings; an elastic element is fitted into the mounting groove, with its two ends respectively abutting against the side wall of the mounting groove and the side wall of the limiting ring. The elastic element, through the action of the limiting ring, causes the multiple differential rings to press against each other. The elastic element ensures that adjacent differential rings can still maintain sufficient friction after long-term use, ensuring a constant friction force on the differential rings and preventing slippage due to reduced friction and low tension. This ensures a normal winding process and winding quality.

[0037] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A slip shaft with a limiting function, characterized in that: The shaft body, the slip rings, the limiting ring and the elastic member are included; the outer side wall of the shaft body is concave inwardly and has a mounting groove extending in the same direction as the shaft body; the slip rings are arranged in the mounting groove in sequence along the extending direction of the mounting groove; the limiting ring is sleeved in the mounting groove and located outside the slip rings; the elastic member is sleeved in the mounting groove, and the two ends of the elastic member are respectively abutted on the side wall of the mounting groove and the side wall of the limiting ring; the elastic member promotes the mutual extrusion of the slip rings through the action of the limiting ring.

2. A slip shaft with a limiting function according to claim 1, characterized in that: The mounting groove has an open end, a fixing ring is sleeved on the open end of the mounting groove, the fixing ring is fixedly installed on the shaft body and blocks the opening of the mounting groove, one end of the elastic member is abutted on the side wall of the fixing ring, and the other end of the elastic member is abutted on the side wall of the limiting ring.

3. A slip shaft with a limiting function according to claim 2, characterized in that: The outer side of the fixing ring is limited and fixed through the bolt matched with the shaft body.

4. The slip clutch shaft with a stop function according to claim 1, characterized in that: The elastic member is a spring.

5. The slip clutch shaft with a stop function according to claim 1, characterized in that: One end of the shaft body is integrally formed with a mounting portion matched with the outside.

6. The slip clutch shaft with a stop function according to claim 1, characterized in that: The slip ring comprises a main body, a sliding part and a limiting member, the outer side wall of the main body is concave inwardly and has a sliding groove, the side wall of the sliding groove is concave inwardly and has a limiting groove penetrating the outer side wall of the main body, the limiting groove extends annularly along the side wall of the main body, and the depth of the limiting groove increases in sequence along the extending direction of the limiting groove; the sliding part is arranged in the sliding groove and can slide back and forth, the sliding part is provided with a radial extending movable groove, the movable groove penetrates the outer side wall of the sliding part and is in communication with the limiting groove in correspondence, and the limiting member extends into the limiting groove and the movable groove at the same time; the limiting member slides back and forth along the limiting groove with the relative sliding of the sliding part and the main body, and radially moves along the movable groove with the change of the depth of the limiting groove, so as to extend and retract the outer side wall of the sliding part outwardly.

7. A slip shaft with a limiting function according to claim 6, characterized in that: The limiting grooves are two left and right symmetrical grooves arranged on the left and right sides of the sliding groove, and the two ends of the limiting member extend into the two limiting grooves respectively.

8. The slip shaft with a limiting function according to claim 6, characterized in that: The sliding part is provided with an annular extending groove, and the main body is provided with a limiting column matched with the groove.

9. The slip clutch shaft with a stop function according to claim 6, characterized in that: The limiting grooves are five equiangular grooves, and correspondingly, the movable grooves and the limiting members are five equiangular grooves, and each limiting member extends into the corresponding limiting groove and the corresponding movable groove at the same time.

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