Mold for packaging film production

Abstract

The utility model discloses a mold for packaging film production, which relates to the technical field of packaging film production, and comprises a support frame, a positioning unit is arranged on the top surface of the support frame, a limiting unit is arranged in the positioning unit, a cutting unit is arranged in the positioning unit, a tensioning unit is arranged in the positioning unit, and the limiting unit is arranged on the top surface of the support frame. The tensioning unit comprises a first limiting frame, the first limiting frame is rotationally connected to the interior of the positioning unit, a first tensioning wheel is rotationally connected to the inner side of the first limiting frame, a second spring is fixedly connected to one side of the first limiting frame, and a second limiting frame is fixedly connected to one end of the second spring; a second tensioning wheel is rotationally connected into the second limiting frame. Through the arrangement of the first limiting frame, the first tensioning wheel, the second limiting frame, the second tensioning wheel and the second spring, the packaging film in the moving process can be tensioned conveniently, meanwhile, the problem that the packaging film is wrinkled is avoided, and meanwhile the subsequent winding tightness is further improved.

Description

Technical Field

[0001] This utility model relates to the field of packaging film production technology, specifically to a mold for packaging film production. Background Technology

[0002] Packaging film is used for wrapping, making the packaged goods more secure and neat. It is used in foreign trade exports, papermaking, hardware, plastics and chemicals, building materials, food and pharmaceutical industries. Some existing packaging films are bagged, and in the production process of packaging film, it is necessary to combine two packaging films.

[0003] The current publication number CN221916637U discloses a packaging film production mold, relating to the field of packaging film production technology. This invention includes a lower mold and an upper mold, both of which are movably fitted with a flattening component. A first motor is mounted on one side of the lower mold, and a rotating rod rotatably fitted within the lower mold is mounted at the output end of the first motor. A second motor is mounted at one end of the rotating rod, and a screw rotatably fitted within the rotating rod is mounted at the output end of the second motor. Two movable discs corresponding to the screw are movably sleeved on the rotating rod, and cutting discs are mounted around the periphery of the movable discs. This invention uses the flattening component to flatten the packaging film entering between the lower and upper molds, reducing the probability of wrinkles in the packaging film. The second motor, in cooperation with the rotating rod, drives the cutting discs to rotate and cut the edges of the packaging film. The second motor, in cooperation with the screw, drives the two movable discs to move closer or further apart.

[0004] To address the issues in packaging film production, existing technologies employ a flattening component to flatten the packaging film as it enters between the lower and upper molds. However, this method still fails to tension the packaging film during its movement, leading to film material shifting during transport and subsequent loose winding. Utility Model Content

[0005] The purpose of this invention is to provide a mold for producing packaging film, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A mold for producing packaging film includes a support frame, a positioning unit on the top surface of the support frame, a limit unit inside the positioning unit, a cutting unit inside the positioning unit, and a tensioning unit inside the positioning unit.

[0008] The tensioning unit includes a limiting frame 1, which is rotatably connected inside the positioning unit. A tensioning wheel 1 is rotatably connected to the inner side of the limiting frame 1. A spring 2 is fixedly connected to one side of the limiting frame 1. One end of the spring 2 is fixedly connected to the limiting frame 2. A tensioning wheel 2 is rotatably connected inside the limiting frame 2.

[0009] A further improvement of the present invention is that the positioning unit includes a lower mold, the lower mold is fixedly connected to the top surface of the support frame, an electric telescopic rod is provided inside the lower mold, and a positioning groove is fixedly connected to one side of the lower mold.

[0010] By adopting the above technical solution, the setting of the lower mold and the electric telescopic rod facilitates the positioning of the opening and closing of the upper mold.

[0011] A further improvement of this utility model is that: the telescopic end of the positioning groove is fixedly connected to an upper mold, and the bottom surface of the upper mold is fixedly connected to a positioning rod.

[0012] By adopting the above technical solution, the positioning groove facilitates the control of the opening and closing effect of the lower mold and the upper mold.

[0013] A further improvement of the present invention is that the limiting unit includes a limiting roller, the limiting roller is rotatably connected inside the lower mold, the limiting roller is slidably connected to a limiting wheel inside, and the limiting wheel is rotatably connected to a rotating wheel inside.

[0014] By adopting the above technical solution, the setting of limiting rollers, limiting wheels and rotating wheels facilitates the limiting effect of the packaging film during movement, and avoids the problem of deviation during movement.

[0015] A further improvement of this utility model is that: the limiting roller has a plurality of positioning holes evenly distributed inside, the limiting wheel has a T-shaped rod running through it, a spring is sleeved on the outside of the T-shaped rod, and one end of the T-shaped rod is slidably connected to the inside of the positioning hole.

[0016] By adopting the above technical solution, the positioning hole, T-shaped rod and spring are designed to facilitate the movement and limiting adjustment of packaging films of different widths.

[0017] A further improvement of the present invention is that the cutting unit includes an adjusting roller, which is rotatably connected inside the lower mold. An adjusting block is slidably connected inside the adjusting roller, and a cutting blade is threadedly connected to the outer side of the adjusting block.

[0018] By adopting the above technical solution, the setting of adjusting rollers, adjusting blocks and cutting blades facilitates the cutting effect according to the packaging film.

[0019] A further improvement of this utility model is that: a motor is fixedly connected to one side of the adjusting roller, and a bidirectional threaded rod is fixedly sleeved at the output end of the motor, with the inner side of the bidirectional threaded rod connected to the internal thread of the adjusting block.

[0020] By adopting the above technical solution, the motor and bidirectional threaded rod facilitate the adjustment of different widths required for packaging film production.

[0021] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0022] This utility model provides a mold for producing packaging film. By setting up a limiting frame 1, a tensioning wheel 1, a limiting frame 2, a tensioning wheel 2 and a spring 2, it is convenient to tension the packaging film during the movement process, while avoiding the problem of wrinkles in the packaging film, and further improving the tightness of subsequent winding. The setting of the lower mold and the electric telescopic rod facilitates the positioning of the opening and closing of the upper mold.

[0023] This utility model provides a mold for producing packaging film. By setting up limiting rollers, limiting wheels, and rotating wheels, it is easy to limit the movement of the packaging film and avoid deviation during movement. By setting up positioning holes, T-shaped rods, and springs, it is easy to adjust the movement limit of packaging film of different widths. By setting up motors and bidirectional threaded rods, it is easy to adjust the different widths required for packaging film production. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is an exploded structural diagram of the positioning unit of this utility model;

[0026] Figure 3 This is a schematic diagram of the cross-sectional structure of the limiting unit of this utility model;

[0027] Figure 4 This is a schematic diagram of the cross-sectional structure of the cutting unit of this utility model;

[0028] Figure 5 This is a schematic diagram of the tensioning unit of this utility model.

[0029] In the diagram: 1. Support frame; 2. Positioning unit; 21. Lower mold; 22. Electric telescopic rod; 23. Positioning groove; 24. Upper mold; 25. Positioning rod; 3. Limiting unit; 31. Limiting roller; 32. Limiting wheel; 33. Rotating wheel; 34. Positioning hole; 35. T-shaped rod; 36. Spring 1; 4. Cutting unit; 41. Adjusting roller; 42. Adjusting block; 43. Cutting blade; 44. Motor; 45. Bidirectional threaded rod; 5. Tensioning unit; 51. Limiting frame 1; 52. Tensioning wheel 1; 53. Limiting frame 2; 54. Tensioning wheel 2; 55. Spring 2. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to embodiments: Example

[0031] like Figure 1-5 As shown, this utility model provides a mold for producing packaging film, including a support frame 1. A positioning unit 2 is provided on the top surface of the support frame 1. A limiting unit 3 is provided inside the positioning unit 2. A cutting unit 4 is provided inside the positioning unit 2. A tensioning unit 5 is provided inside the positioning unit 2. The tensioning unit 5 includes a limiting frame 51, which is rotatably connected inside the positioning unit 2. A tensioning wheel 52 is rotatably connected to the inner side of the limiting frame 51. A spring 55 is fixedly connected to one side of the limiting frame 51. A limiting frame 53 is fixedly connected to one end of the spring 55. A tensioning wheel 54 is rotatably connected inside the limiting frame 53. During the movement of the upper mold 24, the tensioning wheel 52 and the tensioning wheel 54 come into contact with the top surface of the packaging film. At the same time, the elasticity of the spring 55 causes the packaging film and the limiting roller 31 to be in a tensioned state. Example

[0032] like Figure 1-5As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the positioning unit 2 includes a lower mold 21, which is fixedly connected to the top surface of the support frame 1. An electric telescopic rod 22 is provided inside the lower mold 21. A positioning groove 23 is fixedly connected to one side of the lower mold 21. An upper mold 24 is fixedly connected to the telescopic end of the positioning groove 23. A positioning rod 25 is fixedly connected to the bottom surface of the upper mold 24. The limiting unit 3 includes a limiting roller 31, which is rotatably connected inside the lower mold 21. A limiting wheel 32 is slidably connected inside the limiting roller 31. A rotating wheel 33 is rotatably connected inside the limiting wheel 32. A plurality of positioning holes 34 are evenly provided inside the limiting roller 31. A T-shaped rod 35 is installed through the interior of mold 2. A spring 36 is sleeved on the outside of the T-shaped rod 35. One end of the T-shaped rod 35 is slidably connected to the inside of the positioning hole 34. By placing the packaging film on the top surface of the limiting roller 31, the T-shaped rod 35 is pulled to extend the spring 36, and the limiting wheel 32 moves inside the limiting roller 31. The width of the packaging film is then limited on both sides by the rotating wheel 33. The T-shaped rod 35 is then placed inside the positioning hole 34, thus fixing the limiting wheel 32. The positioning groove 23 is controlled to move the upper mold 24 downward. The positioning rod 25 is then inserted into the electric telescopic rod 22, thus limiting the lower mold 21 and the upper mold 24. Example

[0033] like Figure 1-5 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the cutting unit 4 includes an adjusting roller 41, which is rotatably connected to the inside of the lower mold 21. An adjusting block 42 is slidably connected inside the adjusting roller 41. A cutting blade 43 is threadedly connected to the outer side of the adjusting block 42. A motor 44 is fixedly connected to one side of the adjusting roller 41. A bidirectional threaded rod 45 is fixedly sleeved at the output end of the motor 44. The inner side of the bidirectional threaded rod 45 is threadedly connected to the inside of the adjusting block 42. The motor 44 is controlled to drive the bidirectional threaded rod 45 to rotate, thereby driving the adjusting block 42 to adjust the cutting position according to the different widths of the packaging film under the limit of the adjusting roller 41. At the same time, after long-term use, the worn cutting blade 43 can be disassembled and replaced.

[0034] The working principle of the mold used for producing this packaging film will be explained in detail below.

[0035] like Figure 1-5As shown, by placing the packaging film on the top surface of the limiting roller 31, and simultaneously pulling the T-shaped rod 35 to extend the spring 36, the limiting wheel 32 moves inside the limiting roller 31. Then, according to the width of the packaging film, the two sides of the packaging film are limited by the rotating wheel 33. Next, the T-shaped rod 35 is placed inside the positioning hole 34, thus fixing the limiting wheel 32. The positioning groove 23 is controlled to drive the upper mold 24 downwards, and the positioning rod 25 is inserted into the electric telescopic rod 22, completing the lower mold... The upper mold 24 and the upper mold 21 are limited. During the movement of the upper mold 24, the tensioning roller 1 52 and tensioning roller 2 54 contact the top surface of the packaging film. At the same time, the elastic action of the spring 2 55 drives the packaging film and the limiting roller 31 to be in a tensioned state. Simultaneously, the motor 44 drives the bidirectional threaded rod 45 to rotate, which in turn drives the adjusting block 42 to adjust the cutting position of the packaging film according to different widths under the limit of the adjusting roller 41. After long-term use, the worn cutting blade 43 can be disassembled and replaced.

[0036] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A mold for producing packaging film, comprising a support frame (1), characterized in that: The top surface of the support frame (1) is provided with a positioning unit (2), the inside of the positioning unit (2) is provided with a limit unit (3), the inside of the positioning unit (2) is provided with a cutting unit (4), and the inside of the positioning unit (2) is provided with a tensioning unit (5). The tensioning unit (5) includes a limiting frame (51), which is rotatably connected inside the positioning unit (2). A tensioning wheel (52) is rotatably connected to the inner side of the limiting frame (51). A spring (55) is fixedly connected to one side of the limiting frame (51). A limiting frame (53) is fixedly connected to one end of the spring (55). A tensioning wheel (54) is rotatably connected inside the limiting frame (53).

2. The mold for producing packaging film according to claim 1, characterized in that: The positioning unit (2) includes a lower mold (21), which is fixedly connected to the top surface of the support frame (1). An electric telescopic rod (22) is provided inside the lower mold (21), and a positioning groove (23) is fixedly connected to one side of the lower mold (21).

3. The mold for producing packaging film according to claim 2, characterized in that: The telescopic end of the positioning groove (23) is fixedly connected to the upper mold (24), and the bottom surface of the upper mold (24) is fixedly connected to the positioning rod (25).

4. The mold for producing packaging film according to claim 1, characterized in that: The limiting unit (3) includes a limiting roller (31), which is rotatably connected inside the lower mold (21). A limiting wheel (32) is slidably connected inside the limiting roller (31), and a rotating wheel (33) is rotatably connected inside the limiting wheel (32).

5. A mold for producing packaging film according to claim 4, characterized in that: The limiting roller (31) has a number of positioning holes (34) evenly distributed inside. The limiting wheel (32) has a T-shaped rod (35) that runs through it. A spring (36) is sleeved on the outside of the T-shaped rod (35). One end of the T-shaped rod (35) is slidably connected to the inside of the positioning hole (34).

6. The mold for producing packaging film according to claim 1, characterized in that: The cutting unit (4) includes an adjusting roller (41), which is rotatably connected inside the lower mold (21). An adjusting block (42) is slidably connected inside the adjusting roller (41), and a cutting blade (43) is threadedly connected to the outside of the adjusting block (42).

7. A mold for producing packaging film according to claim 6, characterized in that: A motor (44) is fixedly connected to one side of the adjusting roller (41), and a bidirectional threaded rod (45) is fixedly sleeved at the output end of the motor (44). The inner side of the bidirectional threaded rod (45) is connected to the internal thread of the adjusting block (42).

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