Film-coated iron edge film cutting device

Abstract

The utility model relates to the technical field of film -coated iron production equipment, in order to solve the problem that the blade is easy to rub with the substrate when cutting the film on the substrate, disclose a kind of film cutting device of film -coated iron edge, including mounting seat, vertically set up one plate body on mounting seat, install through-hole is arranged on one plate body, rod body is slidably arranged in install through-hole, one end of rod body is vertically set two plate bodies, the other end of rod body is set screw thread and has nut, spring is set on the rod body between two plate bodies and one plate body, spring is in compression state, the side of two plate bodies away from rod body is set three plate bodies one above the other horizontally, fixed pulley is rotatably set between three plate bodies, blade is set between three plate bodies, the utility model is pressed by spring pressurization and makes fixed pulley resist and press substrate edge, and utilize multi-rod guide to ensure that cutting blade can move steadily when substrate occurs lateral sway, to keep the constant gap of blade and substrate edge all the time, effectively avoid blade edge wear.

Description

Technical Field

[0001] This utility model relates to the technical field of coated iron production equipment, specifically to a coated iron edge cutting device. Background Technology

[0002] Coated iron is a high-performance composite material made by bonding a polymer film to a metal substrate under high temperature and pressure. Due to its excellent corrosion resistance, decorative properties and environmental friendliness, it is widely used in food and cosmetic can lids and other fields.

[0003] In the production process of coated steel, to ensure that the film completely covers the metal substrate (usually a chrome-plated or tin-plated thin steel sheet) and to avoid exposure of the substrate edges due to misalignment, the width of the pre-printed film usually needs to be slightly larger than the width of the substrate. Therefore, after the coating process, the excess film on both sides of the substrate must be precisely trimmed; this process is called "edge trimming".

[0004] Currently, this process generally uses fixed blades for cutting. Specifically, two sets of precisely positioned blades are placed on both sides of the production line, with their cutting edges close to the edge of the substrate. The excess film is cut off and wound up for recycling by utilizing the film's running speed to contact the blades.

[0005] However, existing edge-cutting technologies have a significant drawback: during continuous high-speed operation, the metal substrate inevitably experiences slight lateral wobble or drift. Even small amplitude wobble can cause unintended contact and friction between the hard edge of the substrate and the fixed blade. This continuous hard contact friction leads to a series of problems: rapid blade wear and damage: the direct friction between the metal substrate edge and the blade edge acts as an abrasive, causing the blade edge to quickly become dull, chipped, or even break. Product quality risks: worn blades cannot form clean cut surfaces, potentially leading to film tearing, burrs, or residue. In more severe cases, metal debris generated by friction can contaminate the substrate surface, becoming a potential source of defects that could render the product unusable. Increased production costs: to maintain cutting quality, frequent downtime for blade replacement is necessary, increasing spare parts costs and impacting production continuity and efficiency. Utility Model Content

[0006] To address the aforementioned technical deficiencies, this invention provides a film-cutting device for the edge of coated iron, ensuring that the blade does not come into contact with or rub against the substrate during cutting.

[0007] This utility model discloses a film-cutting device for the edge of coated iron, including a mounting base. A first plate is vertically arranged on the mounting base. A mounting through hole is provided on the first plate. A rod is slidably arranged in the mounting through hole. A second plate is vertically arranged at one end of the rod. The other end of the rod is threaded and screwed with a nut. A spring is sleeved on the rod between the second plate and the first plate. The spring is in a compressed state. A third plate is horizontally arranged on the side of the second plate away from the rod, one above the other. A fixed pulley is rotatably arranged between the third plates. A blade is arranged between the third plates.

[0008] When using the above solution, the mounting base is installed on both sides of the production line, so that the edge of the substrate is pressed against the fixed pulley. At the same time, the cutting edge of the blade is close to the edge of the substrate and there is a gap between them. The blade cuts the excess film on the edge of the substrate. When the substrate produces slight lateral shaking or drift, the fixed pulley causes the second plate to move, so that the cutting edge of the blade always maintains a certain gap with the edge of the substrate, thereby preventing the blade edge from being worn. The function of the spring is to keep the fixed pulley pressed against the edge of the substrate.

[0009] To make the displacement of plate number two more stable, four through holes are installed and evenly distributed on plate number one. A rod is installed in each of the four through holes. One end of each rod is fixedly connected to plate number two, and the other end of each rod is threaded and screwed with a nut. A spring is fitted on each rod between plate number two and plate number one.

[0010] To prevent the substrate from detaching from the fixed pulley, a groove is provided along the circumference of the fixed pulley. The substrate is held in the groove, thus preventing the substrate from detaching from the fixed pulley during transport.

[0011] To make the blade cut the film more smoothly, the angle between the blade edge and the plane of the groove is less than 90 degrees. Since the plane of the substrate and the film on it is parallel to the plane of the groove during substrate transport, the angle between the blade edge and the plane of the film is less than 90 degrees, resulting in less cutting resistance.

[0012] The beneficial effects of the film-cutting device for coated iron edges obtained by this utility model are that the fixed pulley structure with spring pressure adaptively presses against the edge of the substrate, and the multi-rod guide ensures that the cutting blade can move smoothly when the substrate sways or drifts laterally, thereby always maintaining a constant gap between the blade and the edge of the substrate and effectively avoiding blade wear. Attached Figure Description

[0013] Figure 1 This is a perspective view of Embodiment 1 of the present utility model;

[0014] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of this utility model. Detailed Implementation

[0015] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0016] Example 1:

[0017] like Figure 1 , 2 As shown, this utility model discloses a film-cutting device for the edge of coated iron, including a mounting base 1. A first plate 2 is vertically arranged on the mounting base 1. Four mounting through holes are evenly arranged on the first plate 2. A rod 8 is slidably arranged in each of the four mounting through holes. A second plate 4 is vertically arranged at one end of the rod 8. One end of each of the four rods 8 is fixedly connected to the second plate 4. The other end of each rod 8 is threaded and screwed with a nut 9. A spring 3 is sleeved on each rod 8 between the second plate 4 and the first plate 2. The spring 3 is in a compressed state. A third plate 5 is horizontally arranged on the side of the second plate 4 away from the rod 8, one above the other. A fixed pulley 6 is rotatably arranged between the third plates 5. A groove is arranged on the fixed pulley 6 along the circumferential direction. A blade 7 is arranged between the third plates 5. The included angle between the cutting edge of the blade 7 and the plane of the groove is 60 degrees.

[0018] When the above scheme is used, the mounting base 1 is installed on both sides of the production line, so that the edge of the substrate is pressed against the groove on the fixed pulley 6. At the same time, the cutting edge of the blade 7 is close to the edge of the substrate and there is a gap between them. The blade 7 cuts the excess film on the edge of the substrate. When the substrate produces slight lateral shaking or drift, the fixed pulley 6 causes the second plate 4 to be displaced, so that the cutting edge of the blade 7 always maintains a certain gap with the edge of the substrate, thereby preventing the blade 7 from being worn. The function of the spring 3 is to keep the fixed pulley 6 pressed against the edge of the substrate.

Claims

1. A film-cutting device for the edge of coated iron, characterized in that: The system includes a mounting base, on which a first plate is vertically mounted. The first plate has a mounting through hole, and a rod is slidably mounted inside the mounting through hole. A second plate is vertically mounted at one end of the rod, and the other end of the rod is threaded and screwed with a nut. A spring is fitted on the rod between the second plate and the first plate, and the spring is in a compressed state. A third plate is horizontally mounted on the side of the second plate away from the rod, one above the other. A fixed pulley is rotatably mounted between the third plates, and a blade is mounted between the third plates.

2. The edge-cutting device for coated iron according to claim 1, characterized in that: There are four mounting holes, evenly distributed on plate number one. Each of the four mounting holes contains a rod. One end of each rod is fixedly connected to plate number two, and the other end of each rod is threaded and screwed with a nut. A spring is fitted on each rod between plate number two and plate number one.

3. The edge-cutting device for coated iron according to claim 2, characterized in that: The fixed pulley has a groove along its circumference.

4. The edge-cutting device for coated iron according to claim 3, characterized in that: The angle between the blade edge and the plane containing the groove is less than 90 degrees.

Images