Plastic film feeding device of paper compound machine

Abstract

A plastic film feeding device of a paper compound machine comprises a machine frame, an unwinding roller and a speed reduction unit, the unwinding roller is provided with a main body part and a protruding part, the protruding part is located on the outer side of the machine frame, the speed reduction unit comprises a speed reduction sleeve assembly and a friction assembly, and the speed reduction sleeve assembly is fixed relative to the protruding part through a fixing sleeve and a speed reduction disc. The friction assembly is installed on the portion, on the inner side of the speed reduction disc, of the rack and composed of a hydraulic pump, an oil cylinder, a piston push rod and a friction plate, when speed reduction is needed, the hydraulic pump pushes the piston push rod through the oil cylinder to make the friction plate make contact with the speed reduction disc, and therefore the speed reduction effect is achieved; by means of the design, the speed reduction problem in the plastic film feeding process of the paper compound machine is effectively solved, and the stability and the working efficiency of equipment are improved.

Description

Technical Field

[0001] The utility model relates to a feeding device for a compound machine, in particular to a plastic film feeding device for a paper compound machine. Background Art

[0002] Paper laminating machines play a vital role in the modern packaging and printing industries. By laminating paper with functional plastic films and other materials, they optimize and diversify material properties. Among them, the plastic film feeding device, as one of the core components of the paper laminating machine, directly affects the laminating quality and production efficiency.

[0003] In actual production, after the paper is conveyed, the unwinding roller with the plastic film wound on it continues to rotate due to inertia, so the plastic film continues to unwind and scatters on the ground and folds. When the melting part of the plastic film restarts, the plastic film cannot be transmitted straight to the melting part of the plastic film, so that the molten plastic film cannot completely cover the surface of the paper, thus affecting the production quality.

[0004] The existing patent with announcement number CN216335643U provides a plastic film feeding device for a paper laminating machine, including a frame and a unwinding roller with a plastic film wound around it, the unwinding roller is rotatably connected to the frame, a vertical plate is fixed to the frame, a driving tube is rotatably connected to the vertical plate, an elastic pressure component for contacting the surface of the plastic film is slidably connected in the driving tube, the driving tube rotates and moves the elastic pressure component toward the direction close to the plastic film through a transmission mechanism, and the driving tube is connected to the vertical plate through a positioning mechanism.

[0005] The above patent has the following problems:

[0006] 1. When the above patent is decelerating, the elastic pressure component and the plastic film are in contact and friction with each other to stop the rotation. Therefore, when it is decelerating, the device may damage the plastic film and affect production.

[0007] 2. When the number of plastic film layers rolled by the unwinding roller is different, the radius thereof is different, and the shape of the contact portion between the elastic pressure component and the plastic film is fixed, and the deceleration effect thereof may be affected due to the increase of the radius.

[0008] 3. The elastic pressure component is driven by the driving tube to rotate and driven by the transmission mechanism, and its transmission efficiency is slow, and it is impossible to complete the deceleration in the first time. Utility Model Content

[0009] In order to solve the above problems, the utility model provides a plastic film feeding device for a paper laminating machine:

[0010] A plastic film feeding device for a paper compound machine comprises a frame, a reel and a deceleration unit, wherein the reel is rotatably connected to the frame, the reel comprises a main body located between the frames and a protrusion on the outside of the frames, the deceleration unit comprises a deceleration sleeve assembly and a friction assembly, the deceleration sleeve assembly is sleeved on the protrusion, the deceleration sleeve assembly can be relatively fixed to the protrusion, the deceleration sleeve assembly comprises a fixed sleeve and a deceleration disc, the deceleration disc is fixedly connected to the fixed sleeve, the friction assembly is located on the frame inside the deceleration disc, the friction assembly comprises a hydraulic pump, a cylinder, a piston push rod and a friction plate, the hydraulic pump and the cylinder are both fixed to the frame, the cylinder is connected to the hydraulic pump, the cylinder is sealed and movably connected to the piston push rod on one side close to the deceleration disc, the piston push rod is fixedly connected to the friction plate on one side close to the deceleration disc, when deceleration is required, the hydraulic pump pushes the piston push rod to move toward the side of the deceleration disc through the cylinder so that the friction plate contacts the deceleration disc.

[0011] Preferably, a limiting through hole is provided on the protruding portion, a through hole corresponding to the limiting through hole is provided on the fixing sleeve, and the reduction sleeve assembly further comprises a limiting rod and a limiting cover plate. When fixed, the limiting rod is arranged in the limiting through hole, and the limiting cover plate has two portions respectively located at both ends of the limiting rod. A limiting cover sleeve is provided on the limiting cover plate, and the limiting cover sleeve is adapted to the limiting rod. A threaded protrusion is provided on the fixing sleeve, and a first fixing hole corresponding to the threaded protrusion is provided on the limiting cover plate. The fixing sleeve can be disassembled by the limiting cover plate, which is convenient for installation, and the limiting rod is not directly fixed by bolts, so that it is not easy to loosen during rotation, and the reliability is stronger and safer.

[0012] Preferably, the fixing sleeve is provided with at least four second fixing holes for mounting the deceleration disc, and the deceleration disc is provided with holes corresponding to the second fixing holes, and the deceleration disc and the fixing sleeve can be relatively fixed by bolts and nuts.

[0013] Preferably, the hydraulic pump is fixed to the frame via a fixing groove provided on the frame and a fixing plate fixedly connected to the frame, the fixing plate is located above the hydraulic pump, and the fixing plate is provided with a notch corresponding to an output port of the hydraulic pump, and the hydraulic pump can be disassembled or fixed via the fixing groove and the fixing plate, so as to facilitate installation.

[0014] Preferably, the friction plate includes a mounting fixing part fixedly connected to one side of the piston push rod and a replaceable part detachably connected to the mounting fixing part. When the friction force is reduced after a long period of use, the replaceable part can be directly replaced, which is convenient for maintenance.

[0015] Beneficial effect: when deceleration is required, the hydraulic pump pushes the piston push rod to one side of the deceleration disc through the oil cylinder so that the friction plate contacts the deceleration disc, and the deceleration disc is decelerated through friction, and the speed of the unwinding roller is reduced through the deceleration sleeve assembly. This device decelerates the unwinding roller directly through friction and does not contact the plastic film. Therefore, it will not affect the plastic film, nor will it be affected by the amount of plastic film, and the hydraulic drive method makes the deceleration more sensitive. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment.

[0017] Figure 2 It is an enlarged schematic diagram of the reduction unit of the embodiment.

[0018] Figure 3 It is a schematic diagram of the structure of the reduction sleeve assembly.

[0019] Figure 4 Schematic diagram of the friction component structure.

[0020] Figure 5 This is a partial enlarged schematic diagram of the rack.

[0021] : 1. frame; 2. unwinding roller; 3. deceleration unit; 4. main body; 5. protrusion; 6. deceleration sleeve assembly; 7. friction assembly; 8. fixing sleeve; 9. deceleration disc; 10. hydraulic pump; 11. oil cylinder; 12. piston push rod; 13. friction plate; 14. limiting through hole; 15. limiting rod; 16. limiting cover plate; 17. limiting cover sleeve; 18. threaded protruding rod; 19. first fixing hole; 20. second fixing hole; 21. fixing groove; 22. fixing plate; 23. installation fixing part; 24. replaceable part; 25. oil cylinder cover; 26. cylinder body; 27. installation hole. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-5 The utility model is further described with examples.

[0023] Example 1: Figure 1 As shown, a plastic film feeding device of a paper laminating machine includes a frame 1, a reel 2 and a deceleration unit 3, wherein the reel 2 is rotatably connected to the frame 1, the reel 2 includes a main body 4 located between the frames 1 and a protrusion 5 on the outside of the frame 1, the protrusion 5 is located on one side of the main body 4, the protrusion 5 is coaxial with the main body 4, and the radius of the protrusion 5 is smaller than the radius of the main body 4.

[0024] like Figure 2 and Figure 3As shown, the deceleration unit 3 includes a deceleration sleeve assembly 6 and a friction assembly 7, the deceleration sleeve assembly 6 is sleeved with the protrusion 5, the deceleration sleeve assembly 6 can be relatively fixed with the protrusion 5, the deceleration sleeve assembly 6 includes a fixing sleeve 8 and a deceleration disc 9, the fixing sleeve 8 is provided with at least four second fixing holes 20 for mounting the deceleration disc 9, the deceleration disc 9 is provided with holes corresponding to the second fixing holes 20, and the deceleration disc 9 and the fixing sleeve 8 can be relatively fixed by bolts and nuts.

[0025] like Figure 5 As shown, the protrusion 5 is provided with a limiting through hole 14, and the limiting through hole 14 vertically passes through the axis of the protrusion 5. The fixing sleeve 8 is provided with a through hole corresponding to the limiting through hole 14. The reduction sleeve assembly 6 also includes a limiting rod 15 and a limiting cover plate 16. When fixed, the limiting rod 15 is arranged in the limiting through hole 14. The size of the limiting rod 15 is adapted to the limiting through hole 14. When the limiting rod 15 is inserted into the limiting through hole 14, the two ends of the limiting rod 15 protrude from the outer surface of the protrusion 5. The limiting cover plate 16 has two ends respectively located at the two ends of the limiting rod 15. The limit cover plate 16 is used to fix the limit rod 15. The limit cover plate 16 is provided with a limit cover sleeve 17. The limit cover sleeve 17 is adapted to the limit rod 15. When fixed, the inner side surface of the limit cover sleeve 17 abuts against the outer side surface of the limit rod 15 to limit the limit rod 15. The inner side surface of the limit cover plate 16 and the outer side surface of the fixed sleeve 8 are adapted to each other. When fixed, the inner side surface of the limit cover plate 16 fits the outer side surface of the fixed sleeve 8. The fixed sleeve 8 is provided with a threaded protruding rod 18. The limit cover plate 16 is provided with a first fixing hole 19 corresponding to the threaded protruding rod 18. The fixed sleeve 8 can be disassembled by the limit cover plate 16, which is convenient for installation. The limit rod 15 is not directly fixed by bolts, so it is not easy to loosen during the rotation process, and the reliability is stronger and safer.

[0026] like Figure 2 and Figure 4 As shown, the friction assembly 7 is located on the frame 1 inside the deceleration disc 9, and the friction assembly 7 includes a hydraulic pump 10, a cylinder 11, a piston push rod 12 and a friction plate 13. The hydraulic pump 10 and the cylinder 11 are both fixed to the frame 1. Figure 5 As shown, the hydraulic pump 10 is fixed to the frame 1 through a fixing groove 21 provided on the frame 1 and a fixing plate 22 fixedly connected to the frame 1. The fixing plate 22 is located above the hydraulic pump 10. The fixing plate 22 is provided with a notch corresponding to the output port of the hydraulic pump 10. The fixing groove 21 and the fixing plate 22 enable the hydraulic pump 10 to be disassembled or fixed, which is convenient for installation.

[0027] like Figure 2 As shown, the oil cylinder 11 is connected to the hydraulic pump 10. Figure 4 As shown, the oil cylinder 11 includes an oil cylinder 11 cover and a cylinder body 26. A protrusion for fixing to the frame 1 is provided on the outer side of the cylinder body 26. During installation, the cylinder body 26 can be inserted into the mounting hole 27 provided on the frame 1 close to the side of the deceleration disc 9 to limit the movement of the cylinder body 26, so that the cylinder body 26 remains fixed during friction deceleration.

[0028] like Figure 4 As shown, the oil cylinder 11 is sealed and movably connected to the piston push rod 12 on the side close to the deceleration disc 9, and the piston push rod 12 is fixedly connected to the side close to the deceleration disc 9 with a friction plate 13. The friction plate 13 includes a mounting fixed part 23 fixedly connected to one side of the piston push rod 12 and a replaceable part 24 detachably connected to the mounting fixed part 23. When the friction force is reduced after a long period of use, the replaceable part 24 can be directly replaced, which is convenient for maintenance.

[0029] When deceleration is required, the hydraulic pump 10 pushes the piston push rod 12 to the side of the deceleration disc 9 through the oil cylinder 11 so that the friction plate 13 contacts the deceleration disc 9, and the deceleration disc 9 is decelerated by friction. The rotation speed of the unwinding roller 2 is reduced by the deceleration sleeve assembly 6. This device decelerates the unwinding roller 2 directly by friction and does not contact the plastic film. Therefore, it will not affect the plastic film, nor will it be affected by the amount of plastic film, and the hydraulic drive method makes the deceleration more sensitive.

Claims

1. A plastic film feeding device for a paper laminating machine, characterized in that: The invention comprises a frame (1), an unwinding roller (2) and a deceleration unit (3), wherein the unwinding roller (2) is rotatably connected to the frame (1), the unwinding roller (2) comprises a main body (4) located between the frame (1) and a protruding portion (5) outside the frame (1), the deceleration unit (3) comprises a deceleration sleeve assembly (6) and a friction assembly (7), the deceleration sleeve assembly (6) is sleeved on the protruding portion (5), the deceleration sleeve assembly (6) can be fixed relative to the protruding portion (5), the deceleration sleeve assembly (6) comprises a fixing sleeve (8) and a deceleration disc (9), the deceleration disc (9) is fixedly connected to the fixing sleeve (8), the friction assembly (7) is located on the frame (1) inside the deceleration disc (9), and the deceleration sleeve assembly (6) is provided with a plurality of deceleration sleeves (8) and a plurality of deceleration discs (9). The friction assembly (7) comprises a hydraulic pump (10), an oil cylinder (11), a piston push rod (12) and a friction plate (13). The hydraulic pump (10) and the oil cylinder (11) are both fixed to the frame (1). The oil cylinder (11) is connected to the hydraulic pump (10). The oil cylinder (11) is sealed and movably connected to the piston push rod (12) on the side close to the deceleration disc (9). The piston push rod (12) is fixedly connected to the friction plate (13) on the side close to the deceleration disc (9). When deceleration is required, the hydraulic pump (10) pushes the piston push rod (12) through the oil cylinder (11) to move toward the side of the deceleration disc (9) so that the friction plate (13) contacts the deceleration disc (9).

2. The plastic film feeding device of a paper laminating machine according to claim 1, characterized in that: The protruding portion (5) is provided with a limiting through hole (14), the fixing sleeve (8) is provided with a through hole corresponding to the limiting through hole (14), the reduction sleeve assembly (6) further comprises a limiting rod (15) and a limiting cover plate (16), when fixed, the limiting rod (15) is arranged in the limiting through hole (14), the limiting cover plate (16) has two limiting cover plates (16) respectively located at two ends of the limiting rod (15), the limiting cover plate (16) is provided with a limiting cover sleeve (17), the limiting cover sleeve (17) is adapted to the limiting rod (15), the fixing sleeve (8) is provided with a threaded protruding rod (18), and the limiting cover plate (16) is provided with a first fixing hole (19) corresponding to the threaded protruding rod (18).

3. The plastic film feeding device of a paper laminating machine according to claim 1, characterized in that: The fixing sleeve (8) is provided with at least four second fixing holes (20) for mounting the deceleration disc (9), and the deceleration disc (9) is provided with holes corresponding to the second fixing holes (20).

4. The plastic film feeding device of a paper laminating machine according to claim 1, characterized in that: The hydraulic pump (10) is fixed to the frame (1) via a fixing groove (21) provided on the frame (1) and a fixing plate (22) fixedly connected to the frame (1); the fixing plate (22) is located above the hydraulic pump (10); and the fixing plate (22) is provided with a notch corresponding to an output port of the hydraulic pump (10).

5. The plastic film feeding device of a paper laminating machine according to claim 1, characterized in that: The friction plate (13) comprises a mounting fixing portion (23) fixedly connected to one side of the piston push rod (12) and a replaceable portion (24) detachably connected to the mounting fixing portion (23).

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