Automatic one-way stretching machine for polyethylene packaging film

Abstract

The utility model discloses an automatic one-way stretching machine for a polyethylene packaging film, which comprises a mounting bottom plate and a film rolling column rotationally arranged above the mounting bottom plate, and a film clamping component for automatically clamping a film is arranged on the side surface of the film rolling column; the film clamping assembly comprises connecting plates, a fixed plate and a movable plate, and the movable plate is slidably arranged on the corresponding faces of the two connecting plates; a moving assembly for driving the film clamping assembly to move and stretch is arranged on the upper surface of the mounting bottom plate; the side face of the connecting plate is provided with a rotating assembly used for driving the film clamping assembly to rotate to the position below the film rolling column, the moving assembly drives the bun clamping assembly to move to the side face of the film rolling column, then a servo motor is started to drive the bun clamping assembly to move to the position below the film rolling column, and then an electric push rod is started to drive a moving plate to get close to a fixed plate. The falling packaging film is clamped through the fixed plate and the movable plate, and then the packaging film is stretched through the rotating assembly and the movable assembly, so that the packaging film does not need to be connected and stretched manually, and the working efficiency of the packaging film stretching machine is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of polyethylene packaging film stretching, in particular to an automatic unidirectional stretching machine for polyethylene packaging film. Background Art

[0002] Polyethylene is a thermoplastic resin produced by the polymerization of ethylene monomers. In industry, it also includes copolymers of ethylene and a small amount of α-olefins. Polyethylene is odorless, non-toxic, feels like wax, and has excellent low-temperature resistance. Polyethylene packaging film, also known as polyethylene film, refers to a film produced from PE particles. PE film is moisture-proof and has low moisture permeability. Depending on the manufacturing method and control means, polyethylene film (PE) can be produced into products with different properties such as low-density, medium-density, high-density polyethylene and cross-linked polyethylene. Polyethylene packaging film often requires the use of a stretching machine during the production process.

[0003] During the use of the existing polyethylene packaging film unidirectional stretching machine, after stretching to a certain length and cutting, the staff needs to reconnect the packaging film to the stretching machine, which reduces the efficiency of the packaging film stretching machine; therefore, we need to propose an automatic unidirectional stretching machine for polyethylene packaging film. Utility Model Content

[0004] The purpose of the utility model is to provide an automatic unidirectional stretching machine for polyethylene packaging film, which drives the clamping assembly to move to the side of the film rolling column through a moving assembly, and then drives the clamping assembly to rotate to the bottom of the film rolling column through a rotating assembly, and then pushes the movable plate close to the fixed plate through an electric push rod, so that the packaging film is clamped by the fixed plate and the movable plate to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the utility model provides the following technical solution: an automatic unidirectional stretching machine for polyethylene packaging film, comprising a mounting base and a film rolling column rotatably arranged above the mounting base, wherein a film clamping assembly for automatic film clamping is arranged on the side of the film rolling column;

[0006] The clamping assembly includes a connecting plate, a fixed plate and a movable plate. The connecting plates are provided in two groups. The fixed plates are fixedly provided on the corresponding surfaces of the two groups of connecting plates, and the movable plates are slidably provided on the corresponding surfaces of the two groups of connecting plates.

[0007] The upper surface of the mounting base is provided with a moving component for driving the clamping membrane component to move and stretch;

[0008] A rotating assembly is provided on the side of the connecting plate for driving the film clamping assembly to rotate to the bottom of the film rolling column.

[0009] Preferably, the diaphragm assembly also includes a support plate, an electric push rod and a clamping block, the support plate is fixedly connected to the side surfaces of the two groups of connecting plates, the electric push rod is arranged between the support plate and the movable plate, and there are two groups of clamping blocks, the two groups of clamping blocks are fixedly arranged on both sides of the movable plate, and the corresponding surfaces of the two groups of connecting plates are provided with clamping grooves corresponding to the clamping blocks.

[0010] Preferably, the moving assembly includes a mounting frame, a rotating motor, a moving block and a screw rod. The mounting frame is fixedly arranged on the upper surface of the mounting base plate, the rotating motor is bolted to one end of the mounting frame, the screw rod is rotatably arranged inside the mounting frame, and the screw rod is key-connected to the output end of the rotating motor. A sliding groove corresponding to the moving block is opened inside the mounting frame, the moving block is slidably arranged inside the sliding groove, and the moving block is threadedly sleeved on the outer arc surface of the screw rod.

[0011] Preferably, the rotating assembly includes a servo motor, a rotating column, a connecting column and a limit module, the servo motor is bolted to the side of the moving block, the rotating column key is connected to the output end of the servo motor, and the connecting column is fixedly connected to the outer arc surface of the rotating column, and the connecting column is fixedly connected to a set of connecting plates.

[0012] Preferably, the limiting module includes a limiting column, an extension column and a limiting ring. The limiting column, extension column and limiting ring are each provided in two groups. The two groups of limiting columns are symmetrically installed on the outer arc surface of the rotating column. The two groups of extension columns are fixedly provided on one side of the servo motor, and the two groups of limiting rings are fixedly connected to the corresponding extension columns.

[0013] Preferably, the two groups of limiting rings are both arranged in a semicircular shape corresponding to the limiting column, one group of limiting rings is arranged above the rotating column, and the other group of limiting rings is arranged on one side of the rotating column.

[0014] Preferably, a connection frame is provided on the upper surface of the installation base plate, a rotating motor is bolted to a side of the connection frame away from the installation frame, and an output end of the rotating motor passes through the connection frame and is connected to the film rolling column.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model drives the steamed bun clamping assembly to move to the side of the film rolling column through the moving assembly, then starts the servo motor to drive the steamed bun clamping assembly to move under the film rolling column, and then starts the electric push rod to drive the moving plate close to the fixed plate, so that the fallen packaging film is clamped by the fixed plate and the moving plate, and then the packaging film is stretched by the rotating assembly and the moving assembly, thereby eliminating the need for manual connection and stretching of the packaging film, thereby improving the working efficiency of the packaging film stretching machine.

[0017] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained by the structures indicated in the description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is an exploded view of the mobile component of the utility model;

[0020] Figure 3 This is an exploded view of the rotating assembly of the utility model;

[0021] Figure 4 For this utility model Figure 2 A magnified view of the structure in the middle.

[0022] In the figure: 1. Mounting base; 2. Mounting frame; 3. Servo motor; 4. Connecting frame; 5. Film rolling column; 6. Rotating motor; 7. Support plate; 8. Rotating motor; 9. Sliding groove; 10. Moving block; 11. Screw; 12. Connecting plate; 13. Fixed plate; 14. Moving plate; 15. Electric push rod; 16. Snap block; 17. Snap groove; 18. Rotating column; 19. Limit column; 20. Connecting column; 21. Extension column; 22. Limit ring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] The utility model provides: an automatic unidirectional stretching machine for polyethylene packaging film, such as Figure 1-4 As shown, it includes a mounting base plate 1 and a film rolling column 5 rotatably arranged above the mounting base plate 1, and a film clamping assembly for automatic film clamping is arranged on the side of the film rolling column 5;

[0025] The membrane clamping assembly includes a connecting plate 12, a fixed plate 13 and a movable plate 14. The connecting plates 12 are provided in two groups. The fixed plates 13 are fixedly provided on the corresponding surfaces of the two groups of connecting plates 12, and the movable plates 14 are slidably provided on the corresponding surfaces of the two groups of connecting plates 12.

[0026] The upper surface of the mounting base plate 1 is provided with a moving component for driving the clamping membrane component to move and stretch;

[0027] A rotating assembly is provided on the side of the connecting plate 12 for driving the film clamping assembly to rotate to the bottom of the film rolling column 5; the moving assembly drives the bun clamping assembly to move to the side of the film rolling column 5, and then the servo motor 3 is started to drive the bun clamping assembly to move to the bottom of the film rolling column 5, and then the electric push rod 15 is started to drive the moving plate 14 close to the fixed plate 13, so that the fallen packaging film is clamped by the fixed plate 13 and the moving plate 14, and then the packaging film is stretched by the rotating assembly and the moving assembly, so that there is no need to manually connect and stretch the packaging film, thereby improving the working efficiency of the packaging film stretching machine.

[0028] Preferably, the film clamping assembly also includes a support plate 7, an electric push rod 15 and a clamping block 16. The support plate 7 is fixedly connected to the side surfaces of the two groups of connecting plates 12. The electric push rod 15 is arranged between the support plate 7 and the movable plate 14. Two groups of clamping blocks 16 are provided. The two groups of clamping blocks 16 are fixedly arranged on both sides of the movable plate 14, and the corresponding surfaces of the two groups of connecting plates 12 are provided with clamping grooves 17 corresponding to the clamping blocks 16. The support plate 7 is provided to support the electric push rod 15. The electric push rod 15 is started to drive the movable plate 14 to move closer to or away from the fixed plate 13. The fixed plate 13 and the movable plate 14 are both made of rubber material, so as to ensure that the fixed plate 13 and the movable plate 14 can clamp the packaging film, and the clamping block 16 is provided to ensure that the movable plate 14 can only move along the clamping groove 17, thereby preventing the movable plate 14 from tilting during the movement, thereby ensuring the stability of the fixed plate 13 and the movable plate 14 clamping the packaging film.

[0029] Furthermore, the moving assembly includes an installation frame 2, a rotating motor 8, a moving block 10 and a screw rod 11. The installation frame 2 is fixedly arranged on the upper surface of the installation base plate 1, the rotating motor 8 is bolted to one end of the installation frame 2, the screw rod 11 is rotatably arranged inside the installation frame 2, and the screw rod 11 is keyed to the output end of the rotating motor 8. A sliding groove 9 corresponding to the moving block 10 is opened inside the installation frame 2, the moving block 10 is slidably arranged inside the sliding groove 9, and the moving block 10 is threadedly sleeved on the outer arc surface of the screw rod 11. Starting the rotating motor 8 drives the screw rod 11 to rotate, thereby driving the moving block 10 to move along the screw rod 11, and clamping plates are provided on both sides of the moving block 10, and the clamping plates move along the sliding groove 9, thereby preventing the moving block 10 from rotating when moving.

[0030] Furthermore, the rotating assembly includes a servo motor 3, a rotating column 18, a connecting column 20 and a limiting module. The servo motor 3 is bolted to the side of the moving block 10, the rotating column 18 is keyed to the output end of the servo motor 3, and the connecting column 20 is fixedly connected to the outer arc surface of the rotating column 18, and the connecting column 20 is fixedly connected to a group of connecting plates 12. The servo motor 3 starts to drive the rotating column 18 to rotate, and the rotating column 18 drives the connecting column 20 to rotate, thereby driving the steamed bun clamping assembly to rotate, and when the steamed bun clamping assembly rotates to the lower surface of the film rolling column 5, the packaging film naturally falls between the fixed plate 13 and the movable plate 14, and then the packaging film is clamped by the fixed plate 13 and the movable plate 14.

[0031] It is worth mentioning that the limiting module includes a limiting column 19, an extension column 21 and a limiting ring 22. There are two groups of limiting columns 19, extension columns 21 and limiting rings 22. The two groups of limiting columns 19 are symmetrically installed on the outer arc surface of the rotating column 18. The two groups of extension columns 21 are fixedly arranged on one side of the servo motor 3. The two groups of limiting rings 22 are fixedly connected to the corresponding extension columns 21. The two groups of limiting rings 22 are arranged at ninety degrees on the side of the rotating column 18, and when the rotating column 18 rotates ninety degrees, one group of limiting columns 19 will contact one group of limiting rings 22, and when the rotating column 18 rotates another ninety degrees in the opposite direction, the other group of limiting columns 19 will contact the other group of limiting rings 22, thereby ensuring that the rotating column 18 will only rotate repeatedly at ninety degrees, thereby ensuring that the steamed bun clamping assembly moves below the film rolling column 5 and to the right of the film rolling column 5.

[0032] Specifically, both sets of limiting rings 22 are set to be semicircular in shape corresponding to the limiting column 19. One set of limiting rings 22 is set above the rotating column 18, and the other set of limiting rings 22 is set on one side of the rotating column 18. Both sets of limiting rings 22 are set to be semicircular, thereby ensuring that the rotating column 18 can effectively rotate ninety degrees, and the rotating column 18 will not be unable to rotate ninety degrees due to the limitation of the limiting rings 22.

[0033] In addition, a connecting frame 4 is provided on the upper surface of the mounting base 1, and a rotating motor 6 is bolted to the side of the connecting frame 4 away from the mounting frame 2, and the output end of the rotating motor 6 passes through the connecting frame 4 and is connected to the film roll column 5. The rotating motor 6 is connected to the film roll column 5, thereby driving the film roll column 5 to rotate inside the connecting frame 4, and then the film roll column 5 cooperates with the steamed bun clamping assembly to stretch the packaging film.

[0034] 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Automatic unidirectional stretching machine for polyethylene packaging film, characterized in that: The invention comprises: a mounting base plate (1) and a film rolling column (5) rotatably arranged above the mounting base plate (1), wherein a film clamping assembly for automatically clamping the film is arranged on the side of the film rolling column (5); The clamping assembly comprises a connecting plate (12), a fixed plate (13) and a movable plate (14), wherein the connecting plate (12) is provided in two groups, the fixed plate (13) is fixedly provided on the corresponding surfaces of the two groups of connecting plates (12), and the movable plate (14) is slidably provided on the corresponding surfaces of the two groups of connecting plates (12); The upper surface of the mounting base plate (1) is provided with a moving component for driving the clamping membrane component to move and stretch; A rotating assembly is provided on the side of the connecting plate (12) for driving the film clamping assembly to rotate to the bottom of the film rolling column (5).

2. The automatic unidirectional stretching machine for polyethylene packaging film according to claim 1, characterized in that: The clamping assembly further comprises a support plate (7), an electric push rod (15) and a clamping block (16); the support plate (7) is fixedly connected to the side surfaces of the two groups of connecting plates (12); the electric push rod (15) is arranged between the support plate (7) and the movable plate (14); two groups of the clamping blocks (16) are provided, and the two groups of the clamping blocks (16) are fixedly arranged on both sides of the movable plate (14); and corresponding surfaces of the two groups of the connecting plates (12) are provided with clamping grooves (17) corresponding to the clamping blocks (16).

3. The automatic unidirectional stretching machine for polyethylene packaging film according to claim 2, characterized in that: The moving assembly comprises a mounting frame (2), a rotating motor (8), a moving block (10) and a screw rod (11); the mounting frame (2) is fixedly arranged on the upper surface of the mounting base plate (1); the rotating motor (8) is bolted to one end of the mounting frame (2); the screw rod (11) is rotatably arranged inside the mounting frame (2); and the screw rod (11) is key-connected to the output end of the rotating motor (8); a sliding groove (9) corresponding to the moving block (10) is provided inside the mounting frame (2); the moving block (10) is slidably arranged inside the sliding groove (9), and the moving block (10) is threadedly sleeved on the outer arc surface of the screw rod (11).

4. The automatic unidirectional stretching machine for polyethylene packaging film according to claim 3, characterized in that: The rotating assembly comprises a servo motor (3), a rotating column (18), a connecting column (20) and a limit module, wherein the servo motor (3) is bolted to the side of the moving block (10), the rotating column (18) is key-connected to the output end of the servo motor (3), and the connecting column (20) is fixedly connected to the outer arc surface of the rotating column (18), and the connecting column (20) is fixedly connected to a group of connecting plates (12).

5. The automatic unidirectional stretching machine for polyethylene packaging film according to claim 4, characterized in that: The limiting module comprises a limiting column (19), an extension column (21) and a limiting ring (22), and the limiting column (19), the extension column (21) and the limiting ring (22) are each provided in two groups, the two groups of limiting columns (19) are symmetrically mounted on the outer arc surface of the rotating column (18), the two groups of the extension columns (21) are both fixedly arranged on one side of the servo motor (3), and the two groups of the limiting rings (22) are fixedly connected to the corresponding extension columns (21).

6. The automatic unidirectional stretching machine for polyethylene packaging film according to claim 5, characterized in that: The two groups of limiting rings (22) are both arranged in a semicircular shape corresponding to the limiting column (19), one group of limiting rings (22) is arranged above the rotating column (18), and the other group of limiting rings (22) is arranged on one side of the rotating column (18).

7. The automatic unidirectional stretching machine for polyethylene packaging film according to claim 1, characterized in that: A connecting frame (4) is provided on the upper surface of the installation base plate (1); a rotating motor (6) is bolted to the side of the connecting frame (4) away from the installation frame (2); and an output end of the rotating motor (6) passes through the connecting frame (4) and is connected to the film rolling column (5).

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