A die-cutting device for processing protective films

Abstract

This utility model discloses a die-cutting device for processing protective film, including a base, a bracket fixedly connected to one side of the base, a film roll material inserted into the surface of the bracket, and a swing arm movably connected to the top of the base via a bearing. The swing arm extends from the side away from the base to the top of the bracket and is located in front of the film roll material. A transmission structure is provided on the surface of the base, which can control the swing arm's swing. The transmission structure includes a connecting frame fixedly connected to the front of the base. This utility model applies lateral constraint to the rotating film roll by swinging, directly solving the core problem of swaying caused by a single fixed insertion, improving feeding stability. At the same time, the swing adjustment can adapt to different sizes of film rolls or changes in unwinding tension, avoiding the limitations of traditional rigid fixing. Moreover, the swing arm and transmission structure are integrated into the base, reducing additional support components and simplifying the equipment layout.

Description

Technical Field

[0001] This utility model relates to the field of protective film processing technology, specifically a die-cutting device for processing protective films. Background Technology

[0002] Die-cutting equipment is the core equipment in the production process of protective film processing. It is used to efficiently and accurately cut the whole roll of protective film raw materials into finished products of specific shapes and sizes.

[0003] For example, the patent application number published on the China Patent Network is 202121724647.0, and the patent title is: "A die-cutting device for processing protective film." It includes a mounting frame, a processing table connected to the middle of the mounting frame, a die-cutting frame and a feeding assembly installed on the left and right sides of the processing table respectively. The feeding assembly is used to feed the protective film. A debris removal box is located inside the mounting frame at the lower right end, and a debris removal component is located inside the right side of the debris removal box to remove debris from the protective film. A collection assembly is located inside the mounting frame at the lower left end, and is used to collect the protective film. Conveying rollers and limiting rollers are installed sequentially from the outside to the inside at both ends of the mounting frame. Two limiting rollers are provided on each side, and the two limiting rollers on the same side are parallel vertically. This invention facilitates the separation of the protective film from the raw material, and also facilitates the separation of debris from the protective film, making the collection of the protective film relatively convenient.

[0004] However, the existing die-cutting equipment uses a relatively simple method to fix the film roll, mainly by direct plugging. The film roll is prone to shaking during the rotation and unwinding process, which affects the stability of the film roll feeding.

[0005] Therefore, it is necessary to redesign and modify the die-cutting equipment used for protective film processing. Utility Model Content

[0006] To address the problems mentioned in the background art, the purpose of this utility model is to provide a die-cutting device for protective film processing, which has the advantage of improving the stability of film roll connection. It solves the problem that the existing die-cutting equipment has a relatively simple method of fixing film rolls, which is mainly connected by direct plugging. The film roll is prone to shaking during the rotation and unwinding process, which affects the stability of film roll feeding.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a die-cutting device for processing protective films, including a machine base;

[0008] A bracket is fixedly connected to one side of the base, and a film roll material is inserted into the surface of the bracket. A swing arm is movably connected to the top of the base via a bearing. The swing arm extends from the side away from the base to the top of the bracket and is located in front of the film roll material. A transmission structure is provided on the surface of the base, and the transmission structure can control the swing arm to swing.

[0009] As a preferred embodiment of this utility model, the transmission structure includes a connecting frame fixedly connected to the front of the base, a screw movably connected inside the connecting frame via a bearing, a threaded sleeve connected to the surface of the screw, a pressure rod fixedly connected to the top of the threaded sleeve, and a force-bearing plate fixedly connected to the surface of the swing arm at the top of the threaded sleeve. The force-bearing plate is located on one side of the pressure rod, and the pressure rod can compress the force-bearing plate to make it swing with the swing arm.

[0010] As a preferred embodiment of this invention, the surface of the pressure rod is fitted with a rubber sleeve, and the outer surface of the rubber sleeve is in contact with the surface of the force plate.

[0011] As a preferred embodiment of this utility model, guide rods are fixedly connected to both sides of the top of the base, and pressure plates are sleeved on the surface of the guide rods. The pressure plates can slide vertically on the surface of the guide rods and squeeze the protective film into the interior of the base.

[0012] In a preferred embodiment of this invention, a connecting block is fixedly connected to the top of the base, and a lever is movably connected to the surface of the connecting block via a pin. A push rod located inside the lever is fixedly connected to the back of the pressure plate, and the push rod and the lever are slidably connected.

[0013] As a preferred embodiment of this invention, both the side of the lever near the connecting block and the top of the swing arm are fixedly connected to helical gears, which mesh with each other.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model applies lateral constraint to the rotating film roll by swinging, directly solving the core problem of shaking caused by single plug-in fixing, improving feeding stability. At the same time, the swing adjustment can adapt to different sizes of film rolls or changes in unwinding tension, avoiding the limitations of traditional rigid fixing. Moreover, the swing arm and transmission structure are integrated into the machine base, reducing additional support components and simplifying the equipment layout.

[0016] 2. This utility model converts rotational motion into linear displacement through a screw and screw sleeve mechanism. It utilizes the self-locking characteristic of the screw thread to achieve fine adjustment of the swing arm angle and position locking, avoiding accidental return to position. The pressure rod directly acts on the force plate to form a lever, generating a large swing arm torque with a small input force, effectively suppressing membrane roll swaying.

[0017] 3. This utility model uses a rubber sleeve to buffer the rigid collision between metal parts, reducing wear and noise caused by long-term friction. In addition, the rubber sleeve increases the effective contact area between the pressure rod and the force plate, preventing slippage and ensuring stable transmission of thrust.

[0018] 4. This utility model uses a pressure plate to uniformly press down the film material under the guidance of a guide rod, eliminating the shaking or deviation during film material transmission. It forms a two-stage stable system for unwinding and transmission with the swing rod. Moreover, the double guide rod design ensures that the pressure plate moves vertically without deviation, avoiding film material wrinkles caused by single-point pressure.

[0019] 5. This utility model uses a lever that rotates around a pin as a fulcrum and a push rod that slides inside the sleeve to convert the rotational motion of the lever into the vertical lifting and lowering of the pressure plate. The structure is compact, and the lever principle amplifies the force. The operator can press down / lift the pressure plate with a small torque, which is labor-saving and convenient.

[0020] 6. This utility model uses helical gear meshing to force the swing arm to swing and the pressure plate to rise and fall synchronously, which can effectively utilize the swing power of the swing arm. Attached Figure Description

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

[0022] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0023] Figure 3 This is a schematic cross-sectional view of the present invention.

[0024] Figure 4 This utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0025] In the diagram: 1. Base; 2. Support; 3. Film roll material; 4. Swing rod; 5. Transmission structure; 6. Connecting frame; 7. Screw; 8. Screw sleeve; 9. Pressure rod; 10. Force plate; 11. Rubber sleeve; 12. Guide rod; 13. Pressure plate; 14. Connecting block; 15. Lever; 16. Push rod; 17. Helical gear. Detailed Implementation

[0026] 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.

[0027] like Figures 1 to 4As shown, the present invention provides a die-cutting device for processing protective film, including a machine base 1;

[0028] A bracket 2 is fixedly connected to one side of the base 1. A film roll material 3 is inserted into the surface of the bracket 2. A swing rod 4 is movably connected to the top of the base 1 through a bearing. The swing rod 4 extends to the top of the bracket 2 from the side away from the base 1 and is located in front of the film roll material 3. A transmission structure 5 is provided on the surface of the base 1. The transmission structure 5 can control the swing rod 4 to swing.

[0029] refer to Figure 4 The transmission structure 5 includes a connecting frame 6 fixedly connected to the front of the base 1. A screw 7 is movably connected inside the connecting frame 6 via a bearing. A screw sleeve 8 is threadedly connected to the surface of the screw 7. A pressure rod 9 is fixedly connected to the top of the screw sleeve 8. A force plate 10 located at the top of the screw sleeve 8 is fixedly connected to the surface of the swing arm 4. The force plate 10 is located on one side of the pressure rod 9. The pressure rod 9 can squeeze the force plate 10 to make it swing the swing arm 4.

[0030] As a technical optimization of this utility model, the rotational motion is converted into linear displacement through the screw 7 and screw sleeve 8 mechanism. The self-locking characteristic of the screw thread is used to realize the fine adjustment of the angle and the locking of the position of the swing arm 4, so as to avoid accidental return. The pressure rod 9 directly acts on the force plate 10 to form a lever, generating a large torque of the swing arm 4 with a small input force, which effectively suppresses the swaying of the membrane roll.

[0031] refer to Figure 4 The surface of the pressure rod 9 is fitted with a rubber sleeve 11, and the outer surface of the rubber sleeve 11 is in contact with the surface of the force plate 10.

[0032] As a technical optimization of this utility model, the rubber sleeve 11 buffers the rigid collision between metal parts, reducing wear and noise caused by long-term friction. Moreover, the rubber sleeve 11 increases the effective contact area between the pressure rod 9 and the force plate 10, preventing slippage and ensuring stable transmission of thrust.

[0033] refer to Figure 3 Guide rods 12 are fixedly connected to both sides of the top of the base 1. A pressure plate 13 is sleeved on the surface of the guide rod 12. The pressure plate 13 can slide vertically on the surface of the guide rod 12 and squeeze the protective film into the interior of the base 1.

[0034] As a technical optimization of this utility model, the pressure plate 13 is uniformly pressed down on the film material under the guidance of the guide rod 12, eliminating the shaking or deviation in the transmission of the film material, forming a two-stage stable system for unwinding and transmission with the swing rod 4. Moreover, the design of the double guide rod 12 ensures that the pressure plate 13 moves vertically without deviation, avoiding wrinkles in the film material caused by single-point pressure.

[0035] refer to Figure 3A connecting block 14 is fixedly connected to the top of the base 1. A lever 15 is movably connected to the surface of the connecting block 14 via a pin. A push rod 16 located inside the lever 15 is fixedly connected to the back of the pressure plate 13. The push rod 16 and the lever 15 are slidably connected.

[0036] As a technical optimization of this utility model, the rotation of the lever 15 around the pin is converted into the vertical lifting and lowering of the pressure plate 13 by the push rod 16 sliding inside the sleeve. The structure is compact, and the lever principle amplifies the force. The operator can press down / lift the pressure plate 13 with a small torque, which is labor-saving and convenient.

[0037] refer to Figure 3 The lever 15 near the connecting block 14 and the top of the swing arm 4 are both fixedly connected to helical gears 17, which mesh with each other.

[0038] As a technical optimization of this utility model, the swinging power of the swing rod 4 can be effectively utilized by the engagement of the helical gear 17 to force the swinging of the swing rod 4 and the lifting and lowering of the pressure plate 13 in sync.

[0039] The working principle and usage process of this utility model: The film roll material 3 is installed on the bracket 2 by insertion, serving as the starting point for unwinding. At this time, the transmission structure 5 is in the initial position, and the swing rod 4 is vertical or slightly inclined to the front side of the film roll material 3. When the film roll material 3 is inserted, the operator rotates the screw 7 in the transmission structure 5. The screw 7 rotates under the support of the bearing inside the connecting frame 6. When the screw 7 rotates, the screw sleeve 8 moves along the thread on the surface of the screw 7, driving the pressure rod 9 fixed at the top of the screw sleeve 8 to move horizontally. When the pressure rod 9 moves, the rubber sleeve 11 on its surface contacts and presses the force plate 10 fixed on the swing rod 4. After the force plate 10 is subjected to force, it drives the swing rod 4 to swing around the bearing at the top of the machine base 1. The swing rod 4 swings towards the film roll material 3. Since the swing rod 4 is located in front of the film roll, its swing directly applies lateral constraint to the film roll material 3, limiting the shaking during rotation and unwinding, thereby improving the initial feeding stability. When the swing rod 4 swings, the helical gear 17 at its top rotates accordingly. Because the helical gear 17 meshes with the helical gear 17 at the top of the lever 15, the movement of the swing arm 4 is directly transmitted to the lever 15. The lever 15 rotates around the pin on the surface of the connecting block 14, causing the push rod 16 and the pressure plate 13 connected to it to slide. When the pressure plate 13 descends, its bottom surface presses against the protective film that has entered the machine base 1. Under the guidance of the guide rod 12, the pressure plate 13 applies uniform vertical pressure. This process presses the protective film tightly onto the machine base 1, eliminating vibration or offset during the film material transmission process.

[0040] In summary, this die-cutting equipment for protective film processing directly solves the core problem of wobbling caused by a single plug-in fixing by applying lateral constraint to the rotating film roll through swinging, thus improving feeding stability. At the same time, the swing adjustment can adapt to different sizes of film rolls or changes in unwinding tension, avoiding the limitations of traditional rigid fixing. Moreover, the swing arm 4 and the transmission structure 5 are integrated into the machine base 1, reducing additional support components and simplifying the equipment layout.

[0041] 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.

[0042] 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 die-cutting device for processing protective films, comprising a base (1); characterized in that A bracket (2) is fixedly connected to one side of the base (1). A film roll material (3) is inserted into the surface of the bracket (2). A swing rod (4) is movably connected to the top of the base (1) through a bearing. The swing rod (4) extends from the side away from the base (1) to the top of the bracket (2) and is located in front of the film roll material (3). A transmission structure (5) is provided on the surface of the base (1). The transmission structure (5) can control the swing rod (4) to swing.

2. The die cutting apparatus for protective film processing of claim 1, wherein: The transmission structure (5) includes a connecting frame (6) fixedly connected to the front of the base (1). A screw (7) is movably connected inside the connecting frame (6) via a bearing. A threaded sleeve (8) is threaded onto the surface of the screw (7). A pressure rod (9) is fixedly connected to the top of the threaded sleeve (8). A force plate (10) located at the top of the threaded sleeve (8) is fixedly connected to the surface of the swing arm (4). The force plate (10) is located on one side of the pressure rod (9). The pressure rod (9) can squeeze the force plate (10) to make it swing the swing arm (4).

3. The die cutting apparatus for protective film processing of claim 2, wherein: The surface of the pressure rod (9) is fitted with a rubber sleeve (11), and the outer surface of the rubber sleeve (11) is in contact with the surface of the force plate (10).

4. The die cutting apparatus for protective film processing of claim 1, wherein: Guide rods (12) are fixedly connected to both sides of the top of the base (1). A pressure plate (13) is sleeved on the surface of the guide rod (12). The pressure plate (13) can slide vertically on the surface of the guide rod (12) and squeeze the protective film into the inside of the base (1).

5. A die cutting apparatus for the processing of protective films according to claim 4, characterized in that: A connecting block (14) is fixedly connected to the top of the base (1), and a lever (15) is movably connected to the surface of the connecting block (14) via a pin. A push rod (16) located inside the lever (15) is fixedly connected to the back of the pressure plate (13), and the push rod (16) and the lever (15) are slidably connected.

6. A die cutting apparatus for the processing of protective films according to claim 5, characterized in that: The lever (15) near the connecting block (14) and the top of the swing arm (4) are both fixedly connected with helical gears (17), and the helical gears (17) mesh with each other.

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