Device for quickly disassembling circular knife ejector pin spring column

Abstract

The utility model discloses a device for quickly dismounting a circular knife thimble spring column, which relates to the technical field of light guide film production, and comprises a dismounting frame and a circular knife shell, the circular knife shell is internally provided with a thimble spring column body, the lower end of the dismounting frame is fixedly connected with a clamping ring, the clamping ring is clamped at the upper end of the circular knife shell, and the lower end of the dismounting frame is fixedly connected with the thimble spring column body. A threaded rod is connected into the dismounting and mounting frame in an up-down sliding mode, a connecting piece used for connecting the threaded rod and the ejector pin spring column body is arranged at the lower end of the threaded rod, a spiral disc is connected to the outer portion of the threaded rod in a threaded mode, and the spiral disc is rotationally installed at the upper end of the dismounting and mounting frame. By arranging the disassembling and assembling frame, the connecting piece and the threaded rod, the ejector pin spring column body can be quickly disassembled, manual knocking is not needed, the labor cost is reduced, the disassembling efficiency is improved, damage to the internal structure of a circular knife is avoided, the safety risk that a tool slips or the spring column pops up in the operation process is reduced, and the working efficiency is improved. And the operation safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of light guide film production technology, and in particular to a quick-disassembly device for a circular knife ejector pin spring column. Background Technology

[0002] As a key optical component, light guide film is widely used in LCD backlight modules. During its manufacturing process, a circular cutter is an indispensable tool for precisely cutting the light guide film. However, when cutting the light guide film, the ejector pins used to remove waste material are prone to bending and deformation due to uneven stress or material fatigue, leading to pin malfunction. Currently, the disassembly of the ejector pin spring posts mainly relies on manual operation. Operators need to use tools such as hammers to gradually remove the spring posts from the circular cutter by tapping. This traditional disassembly method requires at least two operators working together, consuming significant manpower. Furthermore, manual tapping is not only slow but also easily damages the circular cutter and its internal structure, shortening the cutter's lifespan and increasing equipment maintenance costs. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a quick-disassembly device for a circular knife ejector pin spring column, which solves the technical problems mentioned in the background section.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a quick-disassembly device for a circular cutter ejector pin spring column, comprising a disassembly frame and a circular cutter housing, wherein an ejector pin spring column is installed inside the circular cutter housing, a retaining ring is fixedly connected to the lower end of the disassembly frame, the retaining ring is engaged with the upper end of the circular cutter housing, a threaded rod is slidably connected to the disassembly frame, a connecting piece is provided at the lower end of the threaded rod for connecting the threaded rod and the ejector pin spring column, and a spiral disk is threadedly connected to the external part of the threaded rod, the spiral disk being rotatably mounted on the upper end of the disassembly frame.

[0005] Furthermore, the connector includes a hanger movably mounted on the lower end of the threaded rod, a locking nut is threaded between the hanger and the threaded rod, and a connecting screw is threaded to the lower end of the hanger. The upper end of the ejector spring column is provided with a connecting hole that matches the connecting screw.

[0006] Furthermore, fastening bolts are threaded on both sides of the retaining ring, and threaded holes for fastening bolts are provided on the outer wall of the circular blade housing.

[0007] Furthermore, a pair of guide holes are provided at the bottom of the retaining ring, and a guide post that matches the guide holes is fixedly connected to the upper end of the circular blade shell.

[0008] Furthermore, a handle is fixedly connected to the outside of the spiral disk, and an anti-slip sleeve is fitted over the outside of the handle.

[0009] Furthermore, the connecting screw is a hexagon socket head cap screw, and the hanger is a U-shaped bracket.

[0010] By employing the above technical solution, this utility model provides a device for quickly disassembling a circular knife ejector pin spring column, which has at least the following beneficial effects:

[0011] 1. This utility model, by setting up a disassembly frame, a connector, and a threaded rod, allows the disassembly frame to be installed on the round cutter housing. The connector connects the threaded rod to the ejector spring column, and then the threaded rod drives the ejector spring column to be gradually pulled out of the round cutter housing, achieving rapid disassembly of the ejector spring column without manual hammering. This not only reduces labor costs and improves disassembly efficiency, but also avoids damage to the internal structure of the round cutter, reduces the safety risks of tool slippage or spring column ejection during operation, and improves operational safety.

[0012] 2. This utility model, by setting fastening bolts, guide holes and guide posts, allows the retaining ring to be clamped onto the round knife housing along the guide holes and guide posts, which can ensure that the fastening bolts and threaded holes are aligned. There is no need to repeatedly rotate the retaining ring to adjust the position of the fastening bolts, which can realize the quick installation of the disassembly frame, save operation time and improve the disassembly efficiency of the ejector pin spring column. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the present invention;

[0016] Figure 3 This is one of the partial structural schematic diagrams of this utility model;

[0017] Figure 4 This is the second partial structural schematic diagram of this utility model.

[0018] In the diagram: 1. Assembly / disassembly frame; 2. Circular blade housing; 21. Ejector pin spring post; 22. Connecting hole; 23. Guide post; 3. Snap ring; 4. Threaded rod; 5. Connector; 51. Hanger; 52. Locking nut; 53. Connecting screw; 6. Spiral disc; 7. Fastening bolt; 8. Guide hole; 9. Handle. Detailed Implementation

[0019] 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.

[0020] When a circular cutter cuts light guide film, the ejector pin used to remove waste material is prone to bending and deformation due to uneven force or material fatigue, leading to pin failure. Currently, the disassembly of the ejector pin spring column mainly relies on manual operation. Operators need to use tools such as hammers to gradually remove the spring column from the circular cutter by tapping. This traditional disassembly method requires at least two operators to work together, consuming a lot of human resources. In addition, manual tapping is not only slow to disassemble, but also easily damages the circular cutter and its internal structure, shortening the service life of the circular cutter and increasing equipment maintenance costs.

[0021] To address the defects in the spring post of the aforementioned ejector pin during disassembly, please refer to [link / reference needed]. Figures 1-4 This utility model provides a quick-disassembly device for a circular cutter's ejector pin spring column, eliminating the need for manual operation, avoiding damage to the internal structure of the circular cutter, and improving disassembly efficiency. The device is based on a disassembly frame 1 and a circular cutter housing 2. An ejector pin spring column 21 is installed inside the circular cutter housing 2. A retaining ring 3 is fixedly connected to the lower end of the disassembly frame 1, engaging with the upper end of the circular cutter housing 2. A threaded rod 4 is slidably connected inside the disassembly frame 1. A connector 5 is provided at the lower end of the threaded rod 4 to connect the threaded rod 4 and the ejector pin spring column 21. A spiral disc 6 is threadedly connected to the outside of the threaded rod 4. The spiral disc 6 is rotatably mounted on the upper end of the disassembly frame 1. Installing the retaining ring 3 on the upper end of the circular cutter housing 2 fixes the disassembly frame 1 to the circular cutter housing 2. Rotating the spiral disc 6, with a handle 9 fixedly connected to its outside and an anti-slip sleeve fitted around the handle 9, facilitates the application of external force to the spiral disc 6, making it easy to rotate. The threaded rod 4 is slidably connected to the disassembly frame 1, and the threaded rod 4 is threadedly connected to the spiral disk 6. The rotation of the spiral disk 6 can drive the threaded rod 4 to slide downward. When the threaded rod 4 slides to a certain height, the ejector spring column 21 and the threaded rod 4 are connected together through the connector 5. Then, the spiral disk 6 is rotated in the opposite direction, which can drive the threaded rod 4 to slide upward. The upward sliding of the threaded rod 4 can drive the ejector spring column 21 to slide upward, thereby gradually pulling the ejector spring column 21 out of the round knife shell 2, realizing the disassembly of the ejector spring column 21 without relying on manual hammering. This not only reduces labor costs and improves disassembly efficiency, but also avoids damage to the internal structure of the round knife, reduces the safety risk of tool slippage or spring column popping out during operation, and improves operational safety.

[0022] To achieve the effect of connecting the threaded rod 4 and the ejector spring column 21 with the aforementioned connector 5, the connector 5 includes a hanger 51 movably installed at the lower end of the threaded rod 4. A locking nut 52 is threaded between the hanger 51 and the threaded rod 4, and a connecting screw 53 is threaded to the lower end of the hanger 51. A connecting hole 22 adapted to the connecting screw 53 is opened at the upper end of the ejector spring column 21. When the threaded rod 4 slides downward, it causes the hanger 51 to slide downward. When the hanger 51 slides to a certain height, the connecting screw 53 is rotated to install the connecting screw 53 into the connecting hole 22. Then, the hanger 51 is locked by the locking nut 52. Subsequently, when the spiral disc 6 drives the threaded rod 4 to lift upward, the ejector spring column 21 can be driven to rise through the hanger 51 and the connecting screw 53.

[0023] To facilitate the installation of the connecting screw 53 into the connecting hole 22, the connecting screw 53 is set as an internal hex bolt, and the hanger 51 is set as a U-shaped one, which makes it easy to insert a hex wrench into the hanger 51 to control the rotation of the connecting screw 53.

[0024] When the ejector spring post 21 is pulled out of the round cutter housing 2 through the disassembly frame 1, the disassembly frame 1 needs to be fixed on the round cutter housing 2 as a whole. Therefore, fastening bolts 7 are threaded on both sides of the retaining ring 3. The outer wall of the round cutter housing 2 has threaded holes for the fastening bolts 7 to be installed. After the retaining ring 3 is clamped on the round cutter housing 2, the two fastening bolts 7 are rotated until the fastening bolts 7 enter the threaded holes. The retaining ring 3 can be fixed on the round cutter housing 2, thereby fixing the disassembly frame 1 on the round cutter housing 2, and then the disassembly operation can be carried out.

[0025] Since the fastening bolt 7 needs to be aligned with the threaded hole when installing the retaining ring 3 on the circular cutter housing 2, the bottom of the retaining ring 3 is provided with a pair of guide holes 8. The upper end of the circular cutter housing 2 is fixedly connected with a guide post 23 that matches the guide holes 8. By clamping the retaining ring 3 onto the circular cutter housing 2 along the guide holes 8 and the guide post 23, it can be ensured that the fastening bolt 7 is aligned with the threaded hole. There is no need to repeatedly rotate the retaining ring 3 to adjust the position of the fastening bolt 7, which saves operation time and improves disassembly efficiency.

[0026] It should be noted that, in this document, 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.

[0027] 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 quick-release device for a circular knife ejector pin spring column, comprising a disassembly frame (1) and a circular knife housing (2), wherein an ejector pin spring column (21) is installed inside the circular knife housing (2), characterized in that: The lower end of the disassembly frame (1) is fixedly connected to a retaining ring (3), which is engaged with the upper end of the circular blade housing (2). The disassembly frame (1) is internally connected to a threaded rod (4) that slides up and down. The lower end of the threaded rod (4) is provided with a connector (5) for connecting the threaded rod (4) and the ejector spring column (21). The threaded rod (4) is externally threaded with a spiral disc (6), which is rotatably mounted on the upper end of the disassembly frame (1).

2. The quick-release circular knife ejector pin spring post device according to claim 1, characterized in that: The connector (5) includes a hanger (51) movably mounted on the lower end of the threaded rod (4). A locking nut (52) is threaded between the hanger (51) and the threaded rod (4), and a connecting screw (53) is threaded to the lower end of the hanger (51). The upper end of the ejector spring column (21) is provided with a connecting hole (22) that matches the connecting screw (53).

3. The quick-release circular knife ejector pin spring post device according to claim 1, characterized in that: Both sides of the retaining ring (3) are threaded with fastening bolts (7), and the outer wall of the circular blade shell (2) is provided with threaded holes for the fastening bolts (7) to be installed.

4. The quick-release circular knife ejector pin spring post device according to claim 1, characterized in that: The bottom of the retaining ring (3) is provided with a pair of guide holes (8), and the upper end of the circular blade shell (2) is fixedly connected with a guide post (23) that is compatible with the guide holes (8).

5. The quick-release circular knife ejector pin spring post device according to claim 1, characterized in that: The spiral disk (6) is fixedly connected to a handle (9), and the handle (9) is covered with an anti-slip sleeve.

6. The quick-release circular knife ejector pin spring post device according to claim 2, characterized in that: The connecting screw (53) is a hexagon socket head cap screw, and the hanger (51) is a U-shaped bracket.

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