Protective film cutting mechanism

Abstract

The utility model relates to the technical field of protective film production and processing equipment, and discloses a protective film cutting mechanism which comprises a belt conveyor, a rack, a reciprocating push-pull mechanism, a tool apron, a cutting tool and a cutting board. The machine frame is fixedly installed on the belt conveyor, after the tool apron is arranged in the machine frame in a sliding mode, the tool apron is driven by a reciprocating push-pull mechanism arranged on the machine frame to move up and down in a reciprocating mode, a plurality of cutting knives are evenly installed on the lower side of the tool apron in the conveying direction of a protective film, and the cutting board is fixed between two side plates of the belt conveyor. And the top surface of the guide rail is movably connected with a conveying belt of the belt conveyor and is correspondingly arranged under the tool apron at the same time. Compared with the prior art, the cutting device has the advantages that the motor drives the tool apron to move up and down in a reciprocating mode, and the protective film conveyed on the belt conveyor is cut once every time the tool apron moves for one cycle. And a plurality of cutting knives are arranged on the lower side of the knife holder, so that the protective film can be cut and processed more efficiently.

Description

Technical Field

[0001] This utility model relates to the technical field of equipment for the production and processing of protective films, specifically a protective film cutting mechanism. Background Technology

[0002] Screen protectors can be categorized by their application, including digital product protectors, automotive protectors, household protectors, and food preservation protectors. With the widespread use of mobile phones and other digital products in China, "screen protector" has gradually become a general term for screen protectors, and their functions within the screen protector field are incredibly diverse.

[0003] Currently, in existing technologies, the cutting devices used for cutting protective films generally employ a single-blade cutting method, which can only cut the film into two sections in one stroke. It's clear that this cutting efficiency is relatively low and needs improvement. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the above-mentioned technical difficulties and provide a protective film cutting mechanism that can perform more efficient cutting of protective film during use.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] A protective film cutting mechanism includes a belt conveyor, a frame, a reciprocating push-pull mechanism, a knife holder, cutting blades, and a cutting board. The frame is fixedly mounted on the belt conveyor. The knife holder is slidably disposed within the frame and is driven to move up and down reciprocally by the reciprocating push-pull mechanism disposed on the frame. Multiple cutting blades are evenly installed on the lower side of the knife holder along the conveying direction of the protective film. The cutting board is fixed between the two side plates of the belt conveyor, and its top surface is movably connected to the conveyor belt of the belt conveyor, while also being disposed directly below the knife holder.

[0007] As an improvement, the frame includes a pair of U-shaped support plates respectively fixed to the two side plates of the belt conveyor; limiting sleeves fixed to the sides of the tool holder are movably sleeved on the two side plates of the U-shaped support plates. This allows the tool holder to move stably up and down within the frame.

[0008] As an improvement, the reciprocating push-pull mechanism includes a servo motor, a crankshaft, and a connecting rod. The crankshaft is rotatably connected between the tops of two U-shaped support plates, and one end is driven by a servo motor mounted and fixed on one of the U-shaped support plates. The top of the connecting rod has a transition sleeve that rotatably fits onto the connecting rod shaft diameter of the crankshaft, and the other end is hinged to the upper side of the tool holder. The servo motor is a known common-sense device, and its use and control methods are existing technologies.

[0009] As an improvement, the top of the cutting blade has a T-shaped structure, and each cutting blade has a pre-drilled T-shaped mounting slot on the bottom surface of the blade holder. Only one end of the mounting slot extends through the blade holder. After the top of the cutting blade is fitted into the mounting slot, it is fixed to the end wall of the closed end of the mounting slot by bolts. This allows for easy installation, removal, and subsequent replacement of the cutting blade.

[0010] The advantages of this utility model compared with the prior art are as follows:

[0011] In use, this invention uses a motor to drive the cutter holder to reciprocate up and down. Each cycle of this motion performs a cutting action on the protective film conveyed by the belt conveyor. Furthermore, multiple cutting blades are installed on the lower side of the cutter holder, allowing for more efficient cutting of the protective film and significantly improving the efficiency of protective film production. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a partial structural schematic diagram of the present invention. Figure 1 .

[0014] Figure 3 This is a schematic diagram of the structure of this utility model. Figure 2 .

[0015] Figure 4 This is the utility model Figure 3 Partial structural diagram Figure 1 .

[0016] Figure 5 This is the utility model Figure 3 Partial structural diagram Figure 2 .

[0017] As shown in the figure: 1. Belt conveyor; 2. Knife holder; 3. Bolt; 4. Cutting knife; 5. Cutting board; 6. U-shaped support plate; 7. Limit sleeve; 8. Servo motor; 9. Crankshaft; 10. Connecting rod; 11. Adapter sleeve; 12. Mounting slot. Detailed Implementation

[0018] In the description of this utility model, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Additionally, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusion.

[0019] The present invention will now be described in further detail with reference to the accompanying drawings.

[0020] A protective film cutting mechanism, comprising:

[0021] Belt conveyor 1 is a known, common-sense device.

[0022] The machine comprises a frame, a blade holder 2, a cutting blade 4, and a cutting board 5. The frame includes a pair of U-shaped support plates 6 fixed to the two side plates of the belt conveyor 1. Limiting sleeves 7, fixed to the sides of the blade holder 2, are movably fitted onto the two side plates of the U-shaped support plates 6. The top of the cutting blade 4 has a T-shaped structure. T-shaped mounting slots 12 are pre-drilled on the bottom surface of the blade holder 2 corresponding to each cutting blade 4. Only one end of the mounting slot 12 extends through the blade holder 2. After the top of the cutting blade 4 is fitted into the mounting slot 12, it is connected and fixed to the end wall of the closed end of the mounting slot 12 by bolts 3. Three cutting blades 4 are evenly arranged along the conveying direction of the protective film. The cutting board 5 is fixed between the two side plates of the belt conveyor 1, and its top surface is movably connected to the conveyor belt of the belt conveyor 1, while also being positioned directly below the blade holder 2.

[0023] The reciprocating push-pull mechanism includes a servo motor 8, a crankshaft 9, and a connecting rod 10. The crankshaft 9 is rotatably connected between the tops of two U-shaped support plates 6, and one end is driven by the servo motor 8 mounted and fixed on a U-shaped support plate 6. The top of the connecting rod 10 has a transition sleeve 11 that is rotatably sleeved on the connecting rod shaft diameter of the crankshaft 9, and the other end is hinged to the upper side of the tool holder 2.

[0024] In the specific implementation of this embodiment:

[0025] like Figure 1As shown, the protective film is conveyed by belt conveyor 1 and is repeatedly cut during the process. Specifically, after the servo motor 8 drives the crankshaft 9 to rotate, it can drive the cutter holder 2 to move up and down reciprocally. Each time it moves to the lowest position, it cuts the protective film once.

[0026] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A protective film cutting mechanism, comprising a belt conveyor (1), characterized in that: It also includes a frame, a reciprocating push-pull mechanism, a knife holder (2), a cutting knife (4), and a cutting board (5); the frame is installed and fixed on the belt conveyor (1), the knife holder (2) is slidably set in the frame and driven to move up and down by the reciprocating push-pull mechanism set on the frame, a plurality of cutting knives (4) are evenly installed on the lower side of the knife holder (2) along the conveying direction of the protective film, the cutting board (5) is fixed between the two side plates of the belt conveyor (1), and its top surface is movably connected to the conveyor belt of the belt conveyor (1) and is also correspondingly set directly below the knife holder (2).

2. The protective film cutting mechanism according to claim 1, characterized in that: The frame includes a pair of U-shaped support plates (6) respectively fixed to the two side plates of the belt conveyor (1); On both sides of the U-shaped support plate (6), there are movably sleeved limiting sleeves (7) fixed to the side of the knife holder (2).

3. The protective film cutting mechanism according to claim 2, characterized in that: The reciprocating push-pull mechanism includes a servo motor (8), a crankshaft (9), and a connecting rod (10). The crankshaft (9) is rotatably connected between the tops of two U-shaped support plates (6), and one end is driven by a servo motor (8) mounted and fixed on a U-shaped support plate (6). The top of the connecting rod (10) has a transition sleeve (11) that is rotatably sleeved on the connecting rod shaft diameter of the crankshaft (9), and the other end is hinged to the upper side of the tool holder (2).

4. The protective film cutting mechanism according to claim 1, characterized in that: The top of the cutting blade (4) is T-shaped. The bottom surface of the blade holder (2) is reserved with T-shaped mounting slots (12) corresponding to each cutting blade (4). Only one end of the mounting slot (12) extends through the blade holder (2). After the top of the cutting blade (4) is installed in the mounting slot (12), it is connected and fixed to the end wall of the closed end of the mounting slot (12) by bolts (3).

5. The protective film cutting mechanism according to claim 1, characterized in that: The cutting blade (4) is provided in three parts.

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