Film tensioning device of modified atmosphere packaging machine

Abstract

The utility model relates to the technical field of packaging machines, and provides a film tensioning device of a modified atmosphere packaging machine, which comprises a packaging table, one end of the top of the packaging table is screwed with a wind-up roll, the other end of the top of the packaging table is screwed with a conveying roll, and one end of the wind-up roll is welded with a driving rod; according to the film tensioning device of the modified atmosphere packaging machine, a gear motor is pushed outwards through an electric push rod, then a driving rod and a driving pipe are separated, a winding roller stops winding, when the driving pipe moves outwards, a first connecting rod drives a second connecting rod to be bent, the second connecting rod drives a push plate to move backwards, and after a transverse rod loses supporting of the push plate, the winding roller is driven to rotate. And when the vertical rod moves downwards, the top plate moves synchronously, so that the rubber block is attached to the top of the conveying roller to press a thin film on the conveying roller, the situation that the conveying roller rotates continuously due to inertia, the thin film is sent out, and the thin film is loose is avoided, and the packaging quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of packaging machine technology, specifically to a film tensioning device for modified atmosphere packaging machines. Background Technology

[0002] Packaging machines are a type of machine that packages products to protect and enhance their appearance. They are used in industries such as food, pharmaceuticals, daily chemicals, hardware, lighting, and furniture.

[0003] A search revealed an existing technology (publication number: CN220723022U) for a film conveying device on a heat shrink film packaging machine. The technology describes a device that "includes a base plate, a first support fixedly connected to the base plate, a first guide roller rotatably connected within the first support, a control plate above the base plate, a moving component for moving the control plate on the base plate, a second guide roller above the control plate, a connecting shaft installed within the second guide roller, second supports fixedly connected to both ends of the connecting shaft, and the bottom end of the second supports mounted on the control plate; and correction components for correcting film deviation at both ends of the second guide roller." However, in this existing technology, when the motor stops, the moving shaft continues to rotate due to inertia, causing the film to become loose. Subsequent sealing will result in wrinkles in the sealed packaging box, reducing packaging quality. Therefore, designing a film tensioning device for a modified atmosphere packaging machine is essential. Utility Model Content

[0004] The purpose of this utility model is to provide a film tensioning device for modified atmosphere packaging machines, which solves the problem in related technologies that when the motor stops during use, the movable shaft continues to rotate due to inertia, causing the film to be in a loose state. When the sealing action is then performed, the sealed packaging box will have wrinkles, reducing the packaging quality.

[0005] The technical solution of this utility model is as follows:

[0006] A modified atmosphere packaging machine film tensioning device includes a packaging table. A take-up roller is screwed to one end of the top of the packaging table, and a conveying roller is screwed to the other end. A drive rod is welded to one end of the take-up roller. An electric push rod is screwed to one side of the packaging table, and a support plate is screwed to the telescopic end of the electric push rod. A geared motor is screwed to one end of the top of the support plate, and a drive tube is welded to the output end of the geared motor. A drive groove is formed inside the drive tube. A first connecting rod is mounted on the outer wall of the drive tube via a rotating shaft, and a second connecting rod is mounted on the other end of the first connecting rod via a rotating shaft. A push plate is welded to the other end. A sleeve is welded to one side of the packaging table, and a crossbar is inserted inside the sleeve. A lifting frame is screwed to the outside of one end of the conveying roller, and a sliding groove is opened on the inner wall of the lifting frame. A top block is slidably installed on the sliding groove, and a first support rod is installed at the bottom of the top block through a rotating shaft. A second support rod is installed at the other end of the first support rod through a rotating shaft, and the other end of the second support rod is connected to one end of the crossbar through a rotating shaft. A vertical rod is inserted into the top of the lifting frame, and a top plate is welded to the top end of the vertical rod. A rubber block is glued to the bottom end face of the top plate, and the rubber block is located above the top of the conveying roller.

[0007] Preferably, both the drive rod and the drive groove are cross-shaped, and the other end of the drive rod is inserted into the drive groove, with the outer contour of the drive rod fitting the inner contour of the drive groove.

[0008] Preferably, one bottom end of the vertical rod extends into the lifting frame, and a base plate is welded to one bottom end of the vertical rod, with the bottom end face of the base plate fitting against the top end face of the top block.

[0009] Preferably, a limiting plate is welded onto the crossbar, and springs are welded to both sides of the limiting plate, with the other end of the springs welded and fixed to the outer wall of the sleeve.

[0010] Preferably, a slide rail is screwed to one side of the packaging table, a guide rod is welded to the bottom end face of the second connecting rod, a pulley is slidably installed inside the slide rail, and one bottom end of the guide rod passes through the pulley.

[0011] Preferably, both ends of the take-up roller and the conveying roller are supported by brackets, and a pressing block is installed on the top of the bracket at the other end of the conveying roller via a telescopic rod, and a support block is welded to the outer wall of the pressing block.

[0012] Preferably, a power supply is screwed to the bottom end face of the packaging platform, and a controller is screwed to the top of the power supply.

[0013] Preferably, the bottom of the rubber block is arc-shaped.

[0014] The beneficial effects of this utility model are:

[0015] The electric push rod pushes the geared motor outward, thus separating the drive rod and drive tube. The winding roller stops winding. When the drive tube moves outward, the first connecting rod drives the second connecting rod to bend. The second connecting rod drives the push plate to move backward. After the crossbar loses the support of the push plate, it moves backward. After the top block loses its support, it drives the vertical rod to move downward. When the vertical rod moves downward, the top plate moves synchronously, causing the rubber block to adhere to the top of the conveyor roller and press the film on the conveyor roller. This prevents the conveyor roller from continuously rotating due to inertia, causing the film to be delivered loosely, thus improving the packaging quality. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is an isometric view of the entire utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 3 This is a cross-sectional view of the drive tube of this utility model;

[0020] Figure 4 This is a sectional view of the lifting frame of this utility model;

[0021] Figure 5 This is the overall rear view of the present invention.

[0022] In the diagram: 1. Packaging table; 2. Rewinding roller; 3. Conveying roller; 4. Drive rod; 5. Electric push rod; 6. Support plate; 7. Gear motor; 8. Drive tube; 9. Drive groove; 10. First connecting rod; 11. Second connecting rod; 12. Push plate; 13. Sleeve; 14. Crossbar; 15. Lifting frame; 16. Slide groove; 17. Top block; 18. First support rod; 19. Second support rod; 20. Vertical rod; 21. Top plate; 22. Rubber block; 23. Base plate; 24. Limiting plate; 25. Spring; 26. Slide rail; 27. Guide rod; 28. Pulley; 29. ​​Pressing block; 30. Support block; 31. Power supply; 32. Controller. Detailed Implementation

[0023] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0024] like Figure 1-5As shown, this embodiment proposes a film tensioning device for a modified atmosphere packaging machine, including a packaging table 1. A take-up roller 2 is screwed to one end of the top of the packaging table 1, and a conveying roller 3 is screwed to the other end of the top of the packaging table 1. A drive rod 4 is welded to one end of the take-up roller 2. An electric push rod 5 is screwed to one side of the packaging table 1, and a support plate 6 is screwed to the telescopic end of the electric push rod 5. A reduction motor 7 is screwed to one end of the top of the support plate 6, and a drive tube 8 is welded to the output end of the reduction motor 7. A drive groove 9 is opened inside the drive tube 8. A first connecting rod 10 is installed on the outer wall of the drive tube 8 through a rotating shaft, and a second connecting rod 11 is installed on the other end of the first connecting rod 10 through a rotating shaft. A push plate 12 is welded to the other end of the second connecting rod 11. A sleeve 13 is welded to one side of the packaging table 1, and the sleeve... A crossbar 14 is inserted inside the tube 13. A lifting frame 15 is screwed to the outside of one end of the conveying roller 3. A groove 16 is provided on the inner wall of the lifting frame 15. A top block 17 is slidably installed on the groove 16. A first support rod 18 is installed at the bottom of the top block 17 via a rotating shaft. A second support rod 19 is installed at the other end of the first support rod 18 via a rotating shaft. The other end of the second support rod 19 is connected to one end of the crossbar 14 via a rotating shaft. A vertical rod 20 is inserted into the top of the lifting frame 15. A top plate 21 is welded to the top end of the vertical rod 20. A rubber block 22 is glued to the bottom end face of the top plate 21. The rubber block 22 is located above the top of the conveying roller 3. The drive rod 4 and the drive groove 9 are both cross-shaped. The other end of the drive rod 4 is inserted into the drive groove 9. The outer wheel of the drive rod 4... The cross-shaped design fits the inner contour of the drive groove 9, which helps improve the transmission effect between the drive rod 4 and the drive groove 9. One bottom end of the vertical rod 20 extends into the lifting frame 15. A base plate 23 is welded to one bottom end of the vertical rod 20, and the bottom end face of the base plate 23 fits with the top end face of the top block 17. The base plate 23 can limit the movement range of the vertical rod 20. A limit plate 24 is welded on the horizontal rod 14, and springs 25 are welded to both sides of the limit plate 24. The other end of the spring 25 is welded and fixed to the outer wall of the sleeve 13. The spring 25 can pull the horizontal rod 14 to reset when the pushing force of the push plate 12 disappears. The limit plate 24 can realize the position of the horizontal rod 14 in the sleeve 13. A slide rail 26 is screwed to one side of the packaging table 1. The second connecting rod 11 A guide rod 27 is welded to the bottom end face of the device. A pulley 28 is slidably installed inside the slide rail 26, and one end of the bottom of the guide rod 27 passes through the pulley 28. The slide rail 26, guide rod 27, and pulley 28 can guide the movement trajectory of the second connecting rod 11. Both ends of the take-up roller 2 and the conveying roller 3 are supported by brackets. A pressing block 29 is installed on the top of the bracket at the other end of the conveying roller 3 via a telescopic rod, and a support block 30 is welded to the outer wall of the pressing block 29. By lifting the support block 30, the pressing block 29 can be moved upward, which facilitates the disassembly and assembly of the conveying roller 3. A power supply 31 is screwed to the bottom end face of the packaging table 1, and a controller 32 is screwed to the top of the power supply 31. The power supply 31 is used to supply power to the electrical devices on the equipment, and the controller 32 is used to control the electrical devices.The bottom of rubber block 22 is curved.

[0025] In this embodiment, during use, one end of the film on the conveying roller 3 is connected to the winding roller 2, and driven by the reduction motor 7, the winding roller 2 continuously winds up the film during the packaging process under the transmission action of the drive rod 4 and the drive tube 8. When the packaging is finished, the controller 32 activates the electric push rod 5 to push the reduction motor 7 outward, thereby separating the drive rod 4 and the drive tube 8. When the drive tube 8 moves outward, the first connecting rod 10 will drive the second connecting rod 11 to bend, and the second connecting rod 11 will drive the push plate 12 to move backward. 4. After losing the support of the push plate 12, the spring 25 will pull the crossbar 14 to move backward. After the top block 17 loses its support, it will drive the vertical bar 20 to move downward. When the vertical bar 20 moves downward, the top plate 21 will move synchronously, so that the rubber block 22 is attached to the top of the conveyor roller 3, thereby preventing the conveyor roller 3 from rotating continuously due to inertia and allowing the film to be delivered. The bottom plate 23 can limit the movement range of the vertical bar 20. The position of the crossbar 14 in the sleeve 13 can be realized by the limiting plate 24. The pressing block 29 can be moved upward by lifting the support block 30, which facilitates the disassembly and assembly of the conveyor roller 3.

[0026] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A film tensioning device for a modified atmosphere packaging machine, comprising a packaging table (1), characterized in that, A take-up roller (2) is screwed to one end of the top of the packaging table (1), and a conveyor roller (3) is screwed to the other end of the top of the packaging table (1). A drive rod (4) is welded to one end of the take-up roller (2). An electric push rod (5) is screwed to one side of the packaging table (1), and a support plate (6) is screwed to the telescopic end of the electric push rod (5). A geared motor (7) is screwed to one end of the top of the support plate (6), and a drive tube (8) is welded to the output end of the geared motor (7). A drive groove (9) is opened inside the drive tube (8). A first connecting rod (10) is installed on the outer wall of the drive tube (8) through a rotating shaft, and a second connecting rod (11) is installed on the other end of the first connecting rod (10) through a rotating shaft. A push plate (12) is welded to the other end of the second connecting rod (11). A sleeve (13) is welded on, and a crossbar (14) is inserted inside the sleeve (13). A lifting frame (15) is screwed to the outside of one end of the conveying roller (3), and a sliding groove (16) is opened on the inner wall of the lifting frame (15). A top block (17) is slidably installed on the sliding groove (16), and a first support rod (18) is installed at the bottom of the top block (17) through a rotating shaft. A second support rod (19) is installed at the other end of the first support rod (18) through a rotating shaft, and the other end of the second support rod (19) is connected to one end of the crossbar (14) through a rotating shaft. A vertical rod (20) is inserted into the top of the lifting frame (15), and a top plate (21) is welded to one end of the top of the vertical rod (20). A rubber block (22) is glued to the bottom end face of the top plate (21), and the rubber block (22) is located above the top of the conveying roller (3).

2. The film tensioning device for a modified atmosphere packaging machine according to claim 1, characterized in that, Both the drive rod (4) and the drive groove (9) are cross-shaped. The other end of the drive rod (4) is inserted into the drive groove (9), and the outer contour of the drive rod (4) fits the inner contour of the drive groove (9).

3. The film tensioning device for a modified atmosphere packaging machine according to claim 1, characterized in that, The bottom end of the vertical rod (20) extends into the lifting frame (15), and a base plate (23) is welded to the bottom end of the vertical rod (20), and the bottom end face of the base plate (23) is in contact with the top end face of the top block (17).

4. The film tensioning device for a modified atmosphere packaging machine according to claim 1, characterized in that, A limiting plate (24) is welded on the crossbar (14), and springs (25) are welded on both sides of the limiting plate (24). The other end of the springs (25) is welded and fixed to the outer wall of the sleeve (13).

5. The film tensioning device for a modified atmosphere packaging machine according to claim 1, characterized in that, A slide rail (26) is screwed onto one side of the packaging platform (1), and a guide rod (27) is welded to the bottom end face of the second connecting rod (11). A pulley (28) is slidably installed inside the slide rail (26), and one end of the bottom of the guide rod (27) passes through the pulley (28).

6. The film tensioning device for a modified atmosphere packaging machine according to claim 1, characterized in that, Both ends of the take-up roller (2) and the conveyor roller (3) are supported by brackets. A pressing block (29) is installed on the top of the bracket at the other end of the conveyor roller (3) via a telescopic rod, and a support block (30) is welded to the outer wall of the pressing block (29).

7. The film tensioning device for a modified atmosphere packaging machine according to claim 1, characterized in that, A power supply (31) is screwed onto the bottom end face of the packaging platform (1), and a controller (32) is screwed onto the top of the power supply (31).

8. The film tensioning device for a modified atmosphere packaging machine according to claim 1, characterized in that, The bottom of the rubber block (22) is arc-shaped.

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