Plastic film heat sealing device

Abstract

The present application relates to a plastic film heat-sealing device, which comprises a body, the body is provided with a fixed plate, the body is provided with a mounting plate, the mounting plate is provided with a driving member, the driving member is connected to a heat-sealing seat, the heat-sealing seat is provided with a heat-sealing knife, the heat-sealing knife is located at one end of the heat-sealing seat away from the driving member, and the heat-sealing knife is used for heat-sealing the plastic film; the heat-sealing seat is provided with a limiter, and the limiter is used to limit the plastic film from moving in a direction away from the mounting plate. In actual use, when the plastic film is heat-sealed, the plastic film adheres to the heat-sealing knife and moves with the heat-sealing knife, so a limiter is provided. When the heat-sealing knife moves in a direction away from the fixed plate, the limiter limits the plastic film from moving in a direction away from the mounting plate. The present application reduces the movement of the plastic film at this time, and facilitates the subsequent transportation of the plastic film.

Description

Technical Field

[0001] The present application relates to the field of plastic film processing, and in particular to a plastic film heat sealing device. Background Art

[0002] Heat-pressing sealing is to heat the sealing material in some way to make it reach a viscous flow state and then pressurize it to make it sticky and sealed. It is usually completed with a heat-pressing sealing device or a heat-pressing sealing machine.

[0003] Refer to the Chinese utility patent with patent number CN213443412U, which discloses a packaging bag heat sealing device, including a support component, a heat sealing component and a moving component. The first conveyor line of the support component is rotatably connected to the side plate, the base is installed on one side of the side plate, the slide of the moving component is slidably connected to the base, the protruding rod is connected to the slide, the first cylinder pushes the slide to move up and down, the heat sealing plate of the heat sealing component is slidably connected to the base, the thermal resistor is installed on one side of the heat sealing plate, and the second cylinder can push the heat sealing plate to move. The food bag is transported along the first conveyor line and then slides onto the protruding rod. When the food bag moves upward under the action of the first cylinder, the second cylinder can be driven to drive the two heat sealing plates to move and squeeze the food bag. The heat sealing is completed under the action of the thermal resistor, and the material is automatically fed and the heat sealing action is performed.

[0004] In actual use, when a plastic film or packaging bag is heat-sealed, the plastic film is prone to stick to the heat-sealing components during the heat-sealing process, which is inconvenient for subsequent transportation and needs to be improved. Utility Model Content

[0005] In order to reduce the situation where the plastic film sticks to the heat sealing component and causes overall transportation inconvenience, the present application provides a plastic film heat sealing device.

[0006] The present application provides a plastic film heat sealing device, which adopts the following technical solution:

[0007] A plastic film heat sealing device comprises a body, wherein the body is provided with a fixing plate, the body is provided with a mounting plate, the mounting plate is provided with a driving member, the driving member is connected to a heat sealing seat, the heat sealing seat is provided with a heat sealing knife, the heat sealing knife is located at an end of the heat sealing seat away from the driving member, and the heat sealing knife is used for heat sealing of the plastic film; the heat sealing seat is provided with a limiting member, and the limiting member is used to limit the movement of the plastic film in a direction away from the mounting plate.

[0008] By adopting the above technical solution, in actual use, when the plastic film is heat-sealed, the plastic film adheres to the heat-sealing knife and moves with the heat-sealing knife. Therefore, a limiter is provided. When the heat-sealing knife moves in a direction away from the fixed plate, the limiter restricts the plastic film from moving in a direction away from the mounting plate, thereby reducing the movement of the plastic film at this time and facilitating the subsequent transportation of the plastic film.

[0009] Optionally, the limiting member includes a limiting plate, a limiting spring and a pressure plate, wherein one end of the limiting plate close to the fixed plate is connected to the limiting spring, and one end of the limiting spring away from the limiting plate is connected to the pressure plate, and the elastic force of the limiting spring limits the pressure plate from moving toward the limiting plate, and the pressure plate is used to resist the plastic film; when the limiting spring is in normal state, the distance between the pressure plate and the fixed plate is smaller than the distance between the heat sealing knife and the fixed plate.

[0010] By adopting the above technical solution, a limit plate, a limit spring and a pressure plate are provided. After the heat sealing operation of the plastic film is completed, the driving member drives the heat sealing seat to move and causes the heat sealing knife to move. Since the distance between the pressure plate and the fixed plate is smaller than the distance between the heat sealing knife and the fixed plate, when the heat sealing knife moves away from the fixed plate, the limit spring causes the pressure plate to contact the plastic film, thereby reducing the movement of the plastic film and making the processing and subsequent transportation of the plastic film more stable.

[0011] Optionally, the pressure plate is provided with a limiting rod, the limiting rod is located at one end of the pressure plate close to the limiting plate, the limiting plate is provided with a limiting hole, and the limiting hole is for the limiting rod to pass through.

[0012] By adopting the above technical solution, a limit rod is set, and the limit rod passes through the limit hole, thereby limiting the shaking of the limit spring and causing the pressure plate to shake in the horizontal direction, reducing the impact of the pressure plate on the normal heat sealing operation, and making the overall processing more convenient.

[0013] Optionally, the machine body includes a rotating roller, which is used to convey plastic film. The rotating roller sleeve is provided with a limit ring, which slides on the rotating roller. The sliding direction of the limit ring is the axial direction of the rotating roller. The inner wall of the limit ring abuts against the outer wall of the rotating roller. The rotating roller is provided with a positioning member, which limits the movement of the limit ring.

[0014] By adopting the above technical solution, in actual use, there is a situation where the plastic film is offset along the axial direction of the rotating roller, which is likely to affect the normal heat sealing of the plastic film. Therefore, a limit ring and a positioning member are provided, and the limit ring contacts the plastic film to limit the positional offset of the plastic film, making the overall processing more stable.

[0015] Optionally, the limiting ring is provided with an extension ring, which is located on the side wall of the limiting ring and away from the plastic film, the extension ring is provided with a positioning hole, the rotating roller is provided with a positioning groove, and multiple positioning grooves are provided along the axis direction of the rotating roller, the positioning grooves are connected to the positioning hole, and the positioning piece passes through the positioning hole and is embedded in the positioning groove.

[0016] By adopting the above technical solution, positioning grooves and positioning holes are set, and the positioning piece passes through the positioning hole and is embedded in the corresponding positioning groove so that the limiting ring limits the plastic film, which is convenient for processing plastic films of different sizes according to actual conditions and improves the overall applicability.

[0017] Optionally, the machine body is provided with a cooling mechanism, the cooling mechanism is located on a side of the limiting member away from the heat sealing knife, and the cooling mechanism is used to cool the plastic film.

[0018] By adopting the above technical solution, in actual use, the heat-sealed portion of the plastic film is easily broken by stretching when it is not cooled, so a cooling mechanism is provided to cool this portion, thereby improving the overall processing efficiency.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] 1. A limiter is provided. When the heat sealing knife moves away from the fixed plate, the limiter limits the plastic film from moving away from the mounting plate, thereby reducing the movement of the plastic film and facilitating the subsequent transportation of the plastic film.

[0021] 2. A limit plate, a limit spring and a pressure plate are provided. When the heat sealing operation of the plastic film is completed, the driving member drives the heat sealing seat to move and causes the heat sealing knife to move. Since the distance between the pressure plate and the fixed plate is smaller than the distance between the heat sealing knife and the fixed plate, when the heat sealing knife moves away from the fixed plate, the limit spring causes the pressure plate to contact the plastic film, thereby reducing the movement of the plastic film and making the processing and subsequent transportation of the plastic film more stable;

[0022] 3. A cooling mechanism is set up to cool this part, which improves the overall processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an overall schematic diagram of the embodiment.

[0024] Figure 2 yes Figure 1 A is an enlarged schematic diagram.

[0025] Figure 3 It is a partial schematic diagram of an embodiment.

[0026] Explanation of the accompanying drawings: 1. Machine body; 2. Fixed plate; 3. Rotating roller; 4. Limiting ring; 5. Extension ring; 6. Positioning hole; 7. Positioning groove; 8. Positioning member; 9. Mounting plate; 10. Driving member; 11. Heat sealing seat; 12. Heat sealing knife; 13. Limiting member; 14. Limiting plate; 15. Limiting spring; 16. Pressing plate. DETAILED DESCRIPTION

[0027] The present application is further described in detail below with reference to the accompanying drawings and embodiments.

[0028] The present application embodiment discloses a plastic film heat sealing device. Figures 1 to 3 , including a body 1, the body 1 is provided with a fixed plate 2, the body 1 includes a rotating roller 3, the rotating roller 3 is used to convey the plastic film to move in the direction of the fixed plate 2, the rotating roller 3 is sleeved with a limiting ring 4, the limiting ring 4 slides on the rotating roller 3, the sliding direction of the limiting ring 4 is the axial direction of the rotating roller 3, the inner wall of the limiting ring 4 abuts against the outer wall of the rotating roller 3, the limiting ring 4 is provided with an extension ring 5, the extension ring 5 is located on the side wall of the limiting ring 4 and away from the plastic film, the extension ring 5 is provided with a positioning hole 6, the rotating roller 3 is provided with a positioning groove 7, a plurality of positioning grooves 7 are provided along the axial direction of the rotating roller 3, the positioning groove 7 is connected to the positioning hole 6, the rotating roller 3 is provided with a positioning member 8, the positioning member 8 passes through the positioning hole 6 and is embedded in the positioning groove 7. In the present application, the positioning member 8 can be a positioning bolt, and alternatively, the positioning member 8 can also be a positioning pin.

[0029] The machine body 1 is provided with a mounting plate 9, which is located above the fixing plate 2. The mounting plate 9 is provided with a driving member 10, which is connected to a heat sealing seat 11. The heat sealing seat 11 is located on a side of the driving member 10 close to the mounting plate 9. The driving member 10 is used to drive the heat sealing seat 11 to move in a vertical direction. The heat sealing seat 11 is provided with a heat sealing knife 12, which is located at one end of the heat sealing seat 11 away from the driving member 10, and the heat sealing knife 12 is used for heat sealing of plastic film. In the present application, the driving member 10 may be a cylinder, or alternatively, the driving member 10 may be an oil cylinder.

[0030] The heat sealing seat 11 is provided with a limiter 13, which is used to limit the plastic film from moving in a direction away from the mounting plate 9. The limiter 13 includes a limiter plate 14, a limiter spring 15 and a pressure plate 16. The limiter plate 14, the limiter spring 15 and the pressure plate 16 are located on the side of the heat sealing seat 11 away from the rotating roller 3. The end of the limiter plate 14 close to the fixed plate 2 is connected to the limiter spring 15, and the end of the limiter spring 15 away from the limiter plate 14 is connected to the pressure plate 16. The elastic force of the limiter spring 15 limits the pressure plate 16 from moving in a direction close to the limiter plate 14, and the pressure plate 16 is used to resist the plastic film. The pressure plate 16 is provided with a limiter rod, which is located at one end of the pressure plate 16 close to the limiter plate 14. The limiter plate 14 is provided with a limiter hole, and the limiter hole is for the limiter rod to pass through. In actual use, when the limiter spring 15 is in a normal state, the distance between the pressure plate 16 and the fixed plate 2 is less than the distance between the heat sealing knife 12 and the fixed plate 2.

[0031] In actual use, after the heat sealing operation is completed, the driving member 10 drives the heat sealing seat 11 to move in the direction away from the fixed plate 2, and the heat sealing knife 12 moves in the direction away from the fixed plate 2 and tends to drive the plastic film adhered to the heat sealing knife 12. At this time, the pressing plate 16 restricts the movement of the plastic film, which facilitates the separation of the plastic film and the heat sealing knife 12.

[0032] The machine body 1 is provided with a cooling mechanism, which is located on the side of the stopper 13 away from the heat sealing knife 12, and is used to cool the plastic film. In the present application, the cooling mechanism can be a spray structure, or alternatively, a cooling fan.

[0033] The implementation principle of a plastic film heat sealing device in an embodiment of the present application is as follows: when a heat sealing operation is required, the driving member 10 drives the heat sealing seat 11 to move toward the direction close to the fixed plate 2. The movement of the heat sealing seat 11 causes the heat sealing knife 12 and the limiting member 13 to move together, and the pressing plate 16 first contacts the plastic film. As the heat sealing seat 11 continues to move, the limiting spring 15 contracts, causing the distance between the pressing plate 16 and the limiting plate 14 to decrease, and then the heat sealing knife 12 contacts the plastic film and performs heat sealing.

[0034] After the heat sealing operation is completed, the driving member 10 drives the heat sealing seat 11 to move away from the fixed plate 2. Since the limit spring 15 is in a compressed state, the elastic force of the limit spring 15 causes the pressure plate 16 to contact the plastic film and limit the movement of the plastic film, thereby facilitating the separation of the plastic film from the heat sealing knife 12.

[0035] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A plastic film heat sealing device, comprising a body (1), characterized in that: The machine body (1) is provided with a fixing plate (2), the machine body (1) is provided with a mounting plate (9), the mounting plate (9) is provided with a driving member (10), the driving member (10) is connected to a heat sealing seat (11), the heat sealing seat (11) is provided with a heat sealing knife (12), the heat sealing knife (12) is located at an end of the heat sealing seat (11) away from the driving member (10), and the heat sealing knife (12) is used for heat sealing of a plastic film; the heat sealing seat (11) is provided with a limiting member (13), and the limiting member (13) is used for limiting the movement of the plastic film in a direction away from the mounting plate (9); The limiting member (13) comprises a limiting plate (14), a limiting spring (15) and a pressing plate (16); the end of the limiting plate (14) close to the fixed plate (2) is connected to the limiting spring (15); the end of the limiting spring (15) away from the limiting plate (14) is connected to the pressing plate (16); the elastic force of the limiting spring (15) limits the pressing plate (16) from moving in a direction close to the limiting plate (14); the pressing plate (16) is used to resist the plastic film; when the limiting spring (15) is in a normal state, the distance between the pressing plate (16) and the fixed plate (2) is smaller than the distance between the heat sealing knife (12) and the fixed plate (2).

2. The plastic film heat sealing device according to claim 1, characterized in that: The pressure plate (16) is provided with a limiting rod, and the limiting rod is located at one end of the pressure plate (16) close to the limiting plate (14). The limiting plate (14) is provided with a limiting hole, and the limiting hole is for the limiting rod to pass through.

3. The plastic film heat sealing device according to claim 1, characterized in that: The machine body (1) comprises a rotating roller (3), the rotating roller (3) is used to convey plastic film, the rotating roller (3) is sleeved with a limiting ring (4), the limiting ring (4) slides on the rotating roller (3), the sliding direction of the limiting ring (4) is the axial direction of the rotating roller (3), the inner wall of the limiting ring (4) abuts against the outer wall of the rotating roller (3), the rotating roller (3) is provided with a positioning member (8), and the positioning member (8) limits the movement of the limiting ring (4).

4. The plastic film heat sealing device according to claim 3, characterized in that: The limiting ring (4) is provided with an extension ring (5), and the extension ring (5) is located on the side wall of the limiting ring (4) and away from the plastic film. The extension ring (5) is provided with a positioning hole (6). The rotating roller (3) is provided with a positioning groove (7). A plurality of positioning grooves (7) are provided along the axis direction of the rotating roller (3). The positioning groove (7) is connected to the positioning hole (6), and the positioning member (8) passes through the positioning hole (6) and is embedded in the positioning groove (7).

5. The plastic film heat sealing device according to claim 1, characterized in that: The machine body (1) is provided with a cooling mechanism, which is located on a side of the limiting member (13) away from the heat sealing knife (12), and is used for cooling the plastic film.

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