Roll core expansion device

Abstract

The utility model discloses a roll core expansion device, which relates to the technical field of roll cores, and has the technical key points that the roll core expansion device comprises a roll shaft and an expansion assembly, the expansion assembly is arranged on the outer circumference of the roll shaft, a plurality of annularly distributed sliding chutes are formed in the outer circumference of the roll shaft, the expansion assembly comprises sliding blocks which are arranged in the sliding chutes in a sliding manner, and the sliding blocks are arranged on the outer circumference of the roll shaft. One end of the sliding block is fixedly connected with an expansion supporting plate, a supporting shaft is rotationally installed in the reel, two driving gears distributed at intervals are fixedly installed on the supporting shaft, a plurality of driven gears distributed annularly are connected to the driving gears in a meshed mode, one side of each driven gear is coaxially connected with a screw, and the other side of each driven gear is coaxially connected with a screw. The screw rods are rotationally installed in the corresponding sliding grooves, and the sliding blocks are connected to the screw rods in a sleeving mode and are in threaded connection with the screw rods. The winding device has the technical effects that by arranging the expansion assembly, when the coil stock is wound, the coil stock can be kept tight, the winding quality is improved, and after winding is completed, the coil stock can be conveniently separated from the surface of the expansion supporting plate.

Description

Technical Field

[0001] This utility model relates to the field of core technology, specifically a core tensioning device. Background Technology

[0002] As the name suggests, a core is a carrier used to support the winding process, such as various films or papers wound into a roll. Currently, the winding of films or papers all uses a fixed carrier, such as a roll. The purpose of the roll is to provide support for the rolled material and to allow for direct disassembly after the winding is completed.

[0003] Currently, most existing cores have a fixed diameter. During the winding process, the material is prone to loosening on the core, which reduces the winding quality. Furthermore, after each winding is completed, the entire core and the material need to be removed at the same time, and a new core needs to be replaced for winding. Therefore, it is time-consuming and labor-intensive. It is relatively difficult to directly separate the wound material from the core.

[0004] Therefore, we propose a core tensioning device. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a core tensioning device, which solves the problems of easy loosening of the core material, resulting in reduced winding quality, and difficulty in separating the core material after winding.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: a core tensioning device, comprising a core and a tensioning assembly, wherein the tensioning assembly is disposed on the outer circumference of the core, and a plurality of annularly distributed sliding grooves are provided on the outer circumference of the core; the tensioning assembly includes a slider slidably installed in the sliding grooves, and one end of the slider is fixedly connected to a tensioning support plate;

[0009] The scroll is internally mounted with a support shaft, on which two spaced main gears are fixedly mounted. Multiple ring-shaped driven gears are meshed with the main gears. Each driven gear is coaxially connected to one side of a screw. The screw is rotatably mounted in a corresponding groove. The slider is sleeved on the screw and threadedly connected to the screw.

[0010] Preferably, the expansion support plate is an arc-shaped plate.

[0011] Preferably, a protective layer is fixedly connected to the outer surface of the expansion support plate, and the protective layer is made of silicone.

[0012] Preferably, knobs are fixedly connected to both ends of the support shaft.

[0013] Preferably, both ends of the scroll are provided with receiving grooves, and the knob is embedded in the receiving grooves.

[0014] Preferably, both ends of the reel are hinged with end caps for covering the receiving groove.

[0015] Preferably, a plug is fixedly connected to one side of the end cap, and a plug block is provided on one side of the end of the reel. A positioning bolt for locking the plug is inserted into one side of the plug block.

[0016] Preferably, a limiting groove is formed on the inner wall of the slide groove, and a limiting block is provided on the outer wall of the slider, the limiting block sliding within the limiting groove.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, the present invention provides a method with the following beneficial effects:

[0019] 1. This utility model, by setting up a tensioning component, allows the material to be wound onto the surface of the tensioning support plate during winding. If the material becomes loose, the support shaft can be rotated by turning the knob. The support shaft then drives the main gear to rotate, which in turn drives the driven gear to rotate. The driven gear then drives the screw to rotate, which in turn drives the corresponding slider to move along the groove in a direction away from the axis of the winding shaft. The tensioning support plate supports and tightens the material, keeping it taut and improving the winding quality.

[0020] 2. After the winding is completed, the knob can be rotated in the opposite direction to drive the support shaft to rotate, so that the tension support plate contracts towards the axis of the roll, thereby facilitating the separation of the roll material from the surface of the tension support plate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the support shaft of this utility model;

[0024] Figure 4 This utility model Figure 1 Enlarged view of the structure at point A in the middle.

[0025] In the picture:

[0026] 1. Scroll; 11. Slide;

[0027] 2. Tensioning assembly; 21. Slider; 22. Tensioning support plate; 23. Support shaft; 24. Main gear; 25. Driven gear; 26. Screw; 27. Protective layer; 28. Knob; 29. ​​Receiving groove; 210. End cap; 211. Insertion post; 212. Insertion block; 213. Positioning bolt; 214. Limiting groove; 215. Limiting block. Detailed Implementation

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] This utility model provides a technical solution:

[0030] Please see Figures 1-4 A core tensioning device includes a winding shaft 1 and a tensioning assembly 2. The tensioning assembly 2 is disposed on the outer circumference of the winding shaft 1. Multiple annularly distributed grooves 11 are formed on the outer circumference of the winding shaft 1. The tensioning assembly 2 includes a slider 21 slidably mounted within the grooves 11. One end of the slider 21 is fixedly connected to a tensioning support plate 22, which is an arc-shaped plate. A support shaft 23 is rotatably mounted inside the winding shaft 1. Both ends of the support shaft 23 are fixedly connected to knobs 28. Two spaced-apart main gears 24 are fixedly mounted on the support shaft 23. Multiple annularly distributed driven gears 25 are meshed on the main gears 24. A screw 26 is coaxially connected to one side of each driven gear 25. The screw 26 is rotatably mounted within the corresponding groove 11. The slider 21 is sleeved on the screw 26 and screwed into it. The winding connection is achieved by setting the tensioning component 2. When winding the material, the material can be wound onto the surface of the tensioning support plate 22. If the material is found to be loose, the support shaft 23 can be rotated by rotating the knob 28. The support shaft 23 drives the main gear 24 to rotate, which in turn drives the driven gear 25 to rotate. The driven gear 25 drives the screw 26 to rotate, which in turn drives the corresponding slider 21 to move along the slide groove 11 in a direction away from the axis of the winding shaft 1. The tensioning support plate 22 supports and tightens the material, keeping it taut and improving the winding quality. After winding is completed, the support shaft 23 can be rotated in the opposite direction by rotating the knob 28, causing the tensioning support plate 22 to contract towards the axis of the winding shaft 1, thus facilitating the separation of the material from the surface of the tensioning support plate 22.

[0031] Furthermore, a protective layer 27 is fixedly connected to the outer surface of the tensioning support plate 22. The protective layer 27 is made of silicone. By setting the protective layer 27, the coil can be protected when the tensioning support plate 22 is used to tighten the coil, thus preventing the tensioning support plate 22 from damaging the coil.

[0032] Furthermore, both ends of the scroll 1 are provided with receiving grooves 29, and the knob 28 is embedded in the receiving grooves 29. Both ends of the scroll 1 are hinged with end caps 210 for covering the receiving grooves 29. By providing receiving grooves 29 and end caps 210, the knob 28 can be stored, covered and protected when not in use, so as to prevent the knob 28 from being accidentally touched.

[0033] Furthermore, a plug post 211 is fixedly connected to one side of the end cap 210, and a plug block 212 is provided on one side of the end of the roll 1. A positioning bolt 213 for locking the plug post 211 is inserted into one side of the plug block 212. By setting the plug post 211, the plug block 212 and the positioning bolt 213, when the end cap 210 is closed, the plug post 211 can be inserted into the plug block 212, and the positioning bolt 213 can be turned to lock the plug post 211, thereby fixing the end cap 210.

[0034] Furthermore, a limiting groove 214 is provided on the inner wall of the slide groove 11, and a limiting block 215 is provided on the outer wall of the slider 21. The limiting block 215 slides in the limiting groove 214. By setting the limiting groove 214 and the limiting block 215, the slider 21 can be limited to prevent it from falling out of the slide groove 11.

[0035] In practical use, the working principle of this utility model is as follows:

[0036] First, when winding the material, the material can be wound onto the surface of the tensioning support plate 22. If the material is found to be loose, the support shaft 23 can be rotated by rotating the knob 28. The support shaft 23 drives the main gear 24 to rotate, the main gear 24 drives the driven gear 25 to rotate, the driven gear 25 drives the screw 26 to rotate, and the screw 26 drives the corresponding slider 21 to move along the slide groove 11 in a direction away from the axis of the winding shaft 1. The tensioning support plate 22 supports and tightens the material, keeping it taut and improving the winding quality.

[0037] After winding is completed, the knob 28 can be rotated in the opposite direction to drive the support shaft 23 to rotate, causing the tension support plate 22 to retract towards the axis of the roll 1, thereby facilitating the separation of the roll material from the surface of the tension support plate 22.

[0038] In summary, the core tensioning device, by setting the tensioning component 2, can keep the coil taut during winding, improve the winding quality, and facilitate the separation of the coil from the surface of the tensioning support plate 22 after winding is completed.

[0039] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A core tensioning device, comprising a core roll (1) and a tensioning assembly (2), characterized in that: The tensioning component (2) is disposed on the outer circumference of the scroll (1). The outer circumference of the scroll (1) is provided with a plurality of annularly distributed sliding grooves (11). The tensioning component (2) includes a slider (21) slidably installed in the sliding groove (11). One end of the slider (21) is fixedly connected to a tensioning support plate (22). The scroll (1) is rotatably mounted with a support shaft (23). Two spaced main gears (24) are fixedly mounted on the support shaft (23). Multiple ring-shaped driven gears (25) are meshed on the main gears (24). A screw (26) is coaxially connected to one side of each driven gear (25). The screw (26) is rotatably mounted in a corresponding slide groove (11). The slider (21) is sleeved on the screw (26) and threadedly connected to the screw (26).

2. The core tensioning device according to claim 1, characterized in that: The expansion support plate (22) is an arc-shaped plate.

3. The core tensioning device according to claim 1, characterized in that: The outer surface of the expansion support plate (22) is fixedly connected with a protective layer (27), which is made of silicone.

4. The core tensioning device according to claim 1, characterized in that: Both ends of the support shaft (23) are fixedly connected to knobs (28).

5. A core tensioning device according to claim 4, characterized in that: Both ends of the scroll (1) are provided with receiving grooves (29), and the knob (28) is embedded in the receiving grooves (29).

6. A core tensioning device according to claim 5, characterized in that: Both ends of the scroll (1) are hinged with end caps (210) for covering the receiving groove (29).

7. A core tensioning device according to claim 6, characterized in that: A plug post (211) is fixedly connected to one side of the end cap (210), and a plug block (212) is provided on one side of the end of the roller (1). A positioning bolt (213) for locking the plug post (211) is inserted into one side of the plug block (212).

8. A core tensioning device according to claim 1, characterized in that: The inner wall of the slide groove (11) is provided with a limiting groove (214), and the outer wall of the slider (21) is provided with a limiting block (215), which slides in the limiting groove (214).

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