Easy release collet

Abstract

The utility model discloses an easy-to-dismount chuck for realizing film winding by cooperating with the winding shaft of winding arm, comprising: a base; a cover plate which is detachably connected with the base through locking screws; a plurality of sliders which are circumferentially arranged on the sidewall of the base and can move radially relative to the base, and the sliders are detachably arranged between the base and the cover plate; a clamping mechanism connected with the cover plate to realize quick detachable connection of the chuck and the winding shaft. The utility model sets the slider as a detachable structure, and the type of the slider is flexibly changed according to different winding requirements to meet the use requirements, without replacing the chuck body, and the utilization rate of the device is improved. By setting the clamping mechanism, the traditional screw locking connection mode is replaced, the chuck and the winding shaft do not need tools for assembly, the structure is simple and convenient to operate, the loss caused by the shutdown of the production line is reduced, and the overall production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of winding and processing equipment components, specifically an easy-to-disassemble chuck. Background Technology

[0002] In industries such as film production and packaging, plastic film winding clamps are the core components for fixing the film core and winding up and down. Their structural rationality directly affects the efficiency of film core assembly and disassembly, winding up and down stability, and the quality of finished film products.

[0003] For example, the utility model patent with patent number CN201120038519.0 discloses a mechanical slitting machine unwinding chuck, which achieves film core support and clamping through a combination structure of outer shell, central shaft and end cover. Although it can avoid the phenomenon of unwinding shaft slippage, the overall structure is complicated. The end cover is fixed to the central shaft by bolts. When disassembling and assembling, the bolts need to be removed one by one, which is cumbersome and time-consuming, and seriously affects the roll changing efficiency of the production line.

[0004] In addition, some existing winding and unwinding chucks have problems such as poor compatibility and inconvenient maintenance. Some chucks use an integrated structure, and if internal parts are damaged, the entire chuck needs to be replaced, resulting in high operating costs. Therefore, improvements are needed. Utility Model Content

[0005] The purpose of this utility model is to provide an easy-to-disassemble chuck to solve the problem of inconvenient disassembly and assembly of existing winding and unwinding chucks mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an easy-to-disassemble chuck for cooperating with the winding shaft of a winding arm to achieve film winding, comprising: a base; A cover plate, which is detachably connected to the base by locking screws, and encloses the base to form an installation space for accommodating the take-up shaft; Multiple sliders are arranged circumferentially on the side wall of the base and can move radially relative to the base, and the sliders are detachably disposed between the base and the cover plate; The engaging mechanism connected to the cover plate enables a quick and detachable connection between the chuck and the winding shaft.

[0007] Preferably, the slide also includes a roller pin and a bearing, wherein the roller pin passes through the side wall of the slide block and the bearing is fitted onto the roller pin.

[0008] Preferably, the engaging mechanism includes a latching post fixed to the cover plate, a latch rotatably connected to the latching post via a positioning pin, and a spring providing an engaging preload force to the latch.

[0009] Preferably, the slider includes two types: a smooth surface working surface and a vertically textured working surface. When the base is equipped with the slider with the smooth surface working surface, a rubber ring is sleeved on the outer periphery formed by the base and the slider.

[0010] Preferably, one end of the slider has a protrusion that slides in cooperation with a corresponding guide structure formed on the cover plate.

[0011] Preferably, a first wear-resistant ring is provided between the contact surfaces of the buckle post and the cover plate.

[0012] Preferably, the base is provided with a second wear-resistant ring at the end away from the cover plate for cooperating with external equipment.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This invention features a replaceable slider structure, allowing for flexible replacement of the slider type to meet different winding requirements without needing to replace the chuck body, thus improving device utilization. By setting up a locking mechanism to replace the traditional screw locking connection method, the chuck and winding shaft can be assembled without tools, resulting in a simple structure, convenient operation, reduced losses caused by production line downtime, and ultimately improved overall production efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the chuck of this utility model; Figure 2 This is a schematic diagram of the exploded three-dimensional structure of the clamp of this utility model; Figure 3 This is a three-dimensional structural diagram of the vertical striped slider and base assembly of this utility model. Figure 4 This is an enlarged three-dimensional structural diagram of the buckle post and buckle assembly of this utility model; Figure 5 This is a schematic diagram of the assembly planar structure of the winding shaft and the chuck of this utility model.

[0015] In the diagram: 1. Base; 2. Slider; 3. Cover plate; 4. Locking screw; 5. Roller pin; 6. Bearing; 7. Snap pin; 8. Snap pin; 9. Positioning pin; 10. Spring; 11. First wear ring; 12. Second wear ring; 13. Rubber ring. Detailed Implementation

[0016] 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.

[0017] Please see Figures 1-5 This utility model provides a technical solution: an easy-to-disassemble chuck for cooperating with the winding shaft of a winding arm to achieve film winding, comprising: a base 1; a cover plate 3, which is detachably connected to the base 1 by locking screws 4, and forms an installation space for accommodating the winding shaft between the cover plate 3 and the base 1. A second wear-resistant ring 12 is provided at the end of the base 1 away from the cover plate 3 for cooperating with external equipment. The second wear-resistant ring 12 reduces direct friction between the base 1 and the external equipment, extends the service life of the base, reduces operating noise, and improves the stability of equipment operation. In actual film winding operations, an external drive shaft can be connected to the base 1 (e.g., Figure 5 As shown in the figure, the base 1 is rotated synchronously by the rotation of the drive shaft to realize the winding and coiling of the film.

[0018] Please see Figure 2 The chuck also includes multiple sliders 2, which are circumferentially arranged on the side wall of the base 1 and can move radially relative to the base 1. This radial movement relative to the base 1 is achieved through pneumatic tensioning (both are existing technologies, and the specific driving principles are not detailed here). This design allows for adaptation to winding shafts of different diameters, with clamping or loosening achieved through the radial extension and retraction of the sliders, improving the chuck's versatility. One end of each slider 2 has a protrusion that slides in conjunction with a corresponding guide structure formed on the cover plate 3. The sliders 2 are detachably positioned between the base 1 and the cover plate 3. The sliders 2 include two types: smooth surface working surface and textured surface working surface. When the base 1 is equipped with a slider 2 with a smooth surface working surface, a rubber ring 13 is fitted around the outer periphery formed by the base 1 and the slider 2. Traditional chucks have a fixed slider 2 structure, which can only meet a single winding requirement. For example, the rubber ring type slider 2 is only suitable for winding shafts of specific diameters and with low friction requirements, while the rubber ring-less slider 2 can only handle heavy-duty but not sensitive winding scenarios. If the winding material or shaft diameter needs to be changed, the entire chuck must be replaced, which increases the equipment adaptation cost. In this device, the slider 2 is a replaceable structure. Simply loosen the locking screw 4 of the cover plate 3 to quickly switch between a smooth surface working surface (with rubber ring 13) or a vertically textured working surface slider 2 without replacing the chuck body.

[0019] Please see Figure 3 and Figure 4The engaging mechanism, connected to the cover plate 3, enables quick and detachable connection between the chuck and the take-up shaft. The engaging mechanism includes a latching post 7 fixed to the cover plate 3, a latch 8 rotatably connected to the latching post 7 via a positioning pin 9, and a spring 10 providing a pre-tightening force to the latch 8. A first wear-resistant ring 11 is provided between the contact surfaces of the latching post 7 and the cover plate 3. It also includes a roller pin 5 and a bearing 6. The roller pin 5 passes through the side wall of the slider 2, and the bearing 6 is fitted onto the roller pin 5. During installation, the take-up shaft pushes the latch 8 to rotate around the positioning pin 9, compressing the spring 10. After the latch 8 passes the take-up shaft engagement position, the spring 10 releases its pre-tightening force, driving the latch 8 to reset, instantly completing the engagement. During disassembly, because a round hole is pre-drilled in the center of the cover plate 3, the latch 8 can be easily unlocked by prying it through the round hole to overcome the spring pre-tightening force. The structure is simple and easy to operate, shortening downtime for take-up shaft replacement and effectively improving take-up efficiency.

[0020] This application sets the slider 2 as a detachable structure, allowing for flexible replacement of the slider 2 type to meet different winding requirements without replacing the chuck body, thus improving the utilization rate of the device. By setting a locking mechanism to replace the traditional screw locking connection method, the chuck and winding shaft can be assembled without tools, resulting in a simple structure, convenient operation, reduced losses caused by production line downtime, and overall improved production efficiency.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detachable chuck for engaging with the take-up shaft of a take-up arm to achieve film winding, characterized in that, include: Base (1); The cover plate (3) is detachably connected to the base (1) by a locking screw (4) and forms an installation space between the cover plate (3) and the base (1) for accommodating the winding shaft. Multiple sliders (2) are arranged circumferentially on the side wall of the base (1) and can move radially relative to the base (1). The sliders (2) are detachably disposed between the base (1) and the cover plate (3). The locking mechanism connected to the cover plate (3) enables quick and detachable connection between the chuck and the winding shaft.

2. The easy-to-disassemble chuck according to claim 1, characterized in that: It also includes a roller pin (5) and a bearing (6), the roller pin (5) passing through the side wall of the slider (2), and the bearing (6) being fitted onto the roller pin (5).

3. The easy-to-disassemble chuck according to claim 1, characterized in that: The engaging mechanism includes a latching post (7) fixed to the cover plate (3), a latch (8) rotatably connected to the latching post (7) via a positioning pin (9), and a spring (10) providing engaging preload to the latch (8).

4. The easy-to-disassemble chuck according to claim 1, characterized in that: The slider (2) includes two types: smooth surface working surface and vertical textured working surface. When the base (1) is equipped with the slider (2) with the smooth surface working surface, the outer periphery formed by the base (1) and the slider (2) is fitted with a rubber ring (13).

5. The easy-to-disassemble chuck according to claim 1, characterized in that: One end of the slider (2) is provided with a protrusion, which slides in cooperation with the corresponding guide structure formed on the cover plate (3).

6. The easy-to-disassemble chuck according to claim 3, characterized in that: A first wear-resistant ring (11) is provided between the contact surface of the buckle post (7) and the cover plate (3).

7. The easy-to-disassemble chuck according to claim 1, characterized in that: The base (1) is provided with a second wear-resistant ring (12) at one end away from the cover plate (3) for cooperating with external equipment.

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