Film covering tightening mechanism

Abstract

The utility model discloses a film covering loosening and tightening mechanism which comprises a machine base, the top of the machine base is fixedly connected with two equipment frames, the tops of the two equipment frames are both fixedly connected with machine frames, the outer walls of the two machine frames are both rotationally connected with lead screws, and the same round rod is rotationally connected between the two lead screws. The outer walls of the two lead screws are both sleeved with moving blocks in a threaded mode, an unwinding roller is rotationally connected between the two racks, and the outer wall of the unwinding roller is slidably sleeved with a driving disc. Through the arrangement of the rack, the lead screw, the round rod, the moving block, the unwinding roller, the driving disc, the connecting rod, the limiting ring, the round sleeve, the inserting rod, the fixing rod and the guide roller, a coiled plastic film is subjected to center alignment, and follow-up film covering is facilitated; the guide roller can be adjusted according to the characteristics of different films; and by arranging a protective sleeve, a torsion rod, a spring, a friction plate, a contact piece and a T-shaped limiting strip, the situation that the rotating speed of the unwinding roller is too high is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of film laminating equipment, in particular to a film laminating tensioning mechanism. Background Art

[0002] Lamination is a key post-printing process. It involves heating and pressurizing a plastic film coated with an adhesive to bond it to a printed paper, creating a fused paper and plastic product. It's a common post-printing process for printed paper. Laminated printed materials, thanks to the additional layer of thin, transparent plastic film, have a smoother, brighter surface. This not only improves the gloss and durability of the printed material, extending its lifespan, but also provides protection against moisture, water, stains, abrasion, folding, and chemical corrosion.

[0003] In the prior art, when printing printed materials, the plastic film on the unwinding roller is subject to a large pulling force and is prone to self-rotation, causing the film to loosen and affecting the laminating effect; and when the plastic film on the unwinding roller moves laterally and is not in the center position, it will also affect the laminating effect. Therefore, we propose a laminating tensioning mechanism to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a film-covering and tightening mechanism.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.

[0007] Preferably, the damping mechanism includes a friction plate, a protective cover is fixedly connected to the outer wall of the frame, an assembly hole is opened on the outer wall of the protective cover, a torsion rod is slidably connected to the inner wall of the assembly hole, a spring is provided on the outer wall of the torsion rod, one end of the torsion rod is fixedly connected to the outer wall of the friction plate, and one end of the unwinding roller is fixedly connected to the contact plate. The damping effect is achieved by arranging the friction plate and the contact plate to prevent the unwinding roller from being pulled and rotating.

[0008] Preferably, a belt conveyor is installed between the two equipment frames, and an extrusion roller and a winding roller are rotatably connected between the two equipment frames. By arranging the extrusion roller and the winding roller, the film is assisted in lamination.

[0009] Preferably, a mounting hole is opened on the outer wall of one of the frames, a bearing is fixedly mounted on the inner wall of the mounting hole, the inner ring of the bearing is fixedly connected to the outer wall of the unwinding roller, and the unwinding roller is assisted in rotating by the bearing.

[0010] Preferably, one end of the spring contacts the outer wall of the friction plate, and the other end of the spring contacts the inner wall of the protective sleeve. By setting the elastic force of the spring, the torsion rod is prevented from rotating on its own.

[0011] Preferably, threaded holes are provided on the outer walls of the circular sleeve and the torsion rod, and bolts are threadedly connected to the inner walls of the threaded holes, so that the position of the circular sleeve is fixed by providing the bolts.

[0012] Preferably, the outer wall of the round rod is fixedly connected with a T-shaped limit strip, and both ends of the strip limit strip are fixedly connected to the tops of the two racks respectively, and the position of the round rod is fixed by providing the T-shaped limit strip.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] This solution aligns the center of the rolled plastic film to facilitate subsequent lamination by setting up a frame, screw rod, round rod, moving block, unwinding roller, driving disk, connecting rod, limit ring, round sleeve, insertion rod, fixed rod and guide roller; and the guide roller can be adjusted according to the characteristics of different films; by setting up a protective sleeve, torsion rod, spring, friction plate, contact plate and T-shaped limit strip, the unwinding roller can be prevented from rotating too fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the description of the specific implementation methods. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a film-laminating and tightening mechanism proposed in the present invention;

[0017] Figure 2 This is a schematic cross-sectional view of a film-laminating and tightening mechanism proposed in the present invention;

[0018] Figure 3 A coating elastic mechanism proposed by the utility model Figure 2 A schematic diagram of the enlarged structure of part A;

[0019] Figure 4 A coating elastic mechanism proposed by the utility model Figure 2 Schematic diagram of the enlarged structure of part B in FIG.

[0020] In the figure: 1. Machine base; 2. Equipment frame; 3. Belt conveyor; 4. Extrusion roller; 5. Winding roller; 6. Frame; 7. Screw; 8. Round rod; 9. Moving block; 10. Unwinding roller; 11. Driving disk; 12. Connecting rod; 13. Limiting ring; 14. Round sleeve; 15. Insert rod; 16. Fixed rod; 17. Guide roller; 18. Protective cover; 19. Torsion rod; 20. Spring; 21. Friction plate; 22. Contact plate; 23. T-type limit strip. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying 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.

[0022] Depend on Figures 1-4 As shown, it relates to a film tensioning mechanism, including a machine base 1, two equipment frames 2 are fixedly connected to the top of the machine base 1, a belt conveyor 3 is installed between the two equipment frames 2, and an extrusion roller 4 and a winding roller 5 are rotatably connected between the two equipment frames 2.

[0023] The tops of the two equipment frames 2 are fixedly connected to the frame 6, and the outer walls of the two frames 6 are rotatably connected to the screw rod 7. The outer wall of the frame 6 is installed with an existing motor, and one end of the motor output shaft passes through the outer wall of the frame 6 and is fixedly connected to one end of the screw rod 7. The screw rod 7 is rotated by the existing motor. The two screw rods 7 are rotatably connected to the same round rod 8, and the outer wall of the round rod 8 is fixedly connected to a T-shaped limit strip 23. The two ends of the strip limit strip 23 are respectively fixedly connected to the tops of the two frames 6. When the screw rod 7 rotates, the round rod 8 is fixed in position by the T-shaped limit strip 23. At the same time, the round rod 8 assists the screw rod 7 to rotate. The outer walls of the two screw rods 7 are threaded with a moving block 9, which drives the moving block 9 to move when the screw rod 7 rotates.

[0024] The unwinding roller 10 is rotatably connected between the two frames 6, and the outer wall of one of the frames 6 is provided with a mounting hole, and the inner wall of the mounting hole is fixedly installed with a bearing by bolts. The inner ring of the bearing is fixedly connected to the outer wall of the unwinding roller 10, and the outer wall sliding sleeve of the unwinding roller 10 is provided with a driving disk 11, and the outer wall of the driving disk 11 is rotatably connected to the limiting ring 13. The outer wall of the limiting ring 13 contacts the rolled plastic film. At the same time, when the rolled plastic film rotates, the limiting ring 13 rotates on the driving disk 11. The two limiting rings 13 are both sleeved on the unwinding roller 10, and the outer wall of the moving block 9 is fixedly connected with a connecting rod 12. The bottom of the connecting rod 12 is fixedly connected to the outer wall of the driving disk 11. Since the driving disk 11 is sleeved on the unwinding roller 10, when the moving block 9 moves, the connecting rod 12 and the driving disk 11 assist it in moving, and the moving block 9 moves the driving disk 11 through the connecting rod 12.

[0025] The outer wall sliding sleeve of the round rod 8 is provided with two round sleeves 14, the outer walls of the two round sleeves 14 are provided with through holes, and the inner walls of the through holes are slidably connected with the insertion rod 15. The outer walls of the two moving blocks 9 are provided with insertion holes, and the inner walls of the two insertion holes are respectively slidably connected with one end of the two insertion rods 15. The outer wall fixed sleeve of the insertion rod 15 is provided with a gasket, which is located on one side of the round sleeve 14. When the shovel rod 15 moves inward, the gasket squeezes the round sleeve 14 to move inward. In addition, after the insertion rod 15 is taken out from the equipment, the round sleeve 14 can be moved alone.

[0026] The outer walls of the two round sleeves 14 are fixedly connected to a fixing rod 16, one end of the fixing rod 16 is rotatably connected to a guide roller 17, and the outer walls of the round sleeves 14 and the torsion rod 19 are both provided with threaded holes, the inner walls of the threaded holes are threadedly connected to bolts, and the round sleeves 14 are fixed to the round rod 8 by rotating the bolts.

[0027] The outer wall of the frame 6 is provided with a damping mechanism, which includes a friction plate 21. The outer wall of the frame 6 is fixedly connected to a protective sleeve 18. The outer wall of the protective sleeve 18 is provided with an assembly hole. The inner wall of the assembly hole is slidably connected with a torsion rod 19. The threaded connection between the torsion rod 19 and the protective sleeve 18 causes the torsion rod 19 to drive the friction plate 21 to move after rotation, and the spring 20 is initially in a contracted state, so the two ends of the spring 20 are squeezed on the outer wall of the friction plate 21 and the inner wall of the protective sleeve 18. At the same time, the threaded hole provided on the outer wall of the torsion rod 19 is used to squeeze one end of the torsion rod 19 onto the outer wall of the frame 6 by rotating the bolt, thereby fixing the position of the torsion rod 19, mainly to prevent the torsion rod 19 from rotating.

[0028] The outer wall of the torsion rod 19 is provided with a spring 20, one end of the spring 20 contacts the outer wall of the friction plate 21, and the other end of the spring 20 contacts the inner wall of the protective sleeve 18. One end of the torsion rod 19 is fixedly connected to the outer wall of the friction plate 21, and one end of the unwinding roller 10 is fixedly connected to the contact plate 22.

[0029] Working principle: When in use, the printed matter is placed on the belt conveyor 3, and the screw rod 7 is driven by the existing motor to rotate. After the screw rod 7 rotates, it drives the moving block 9 to move, and the two moving blocks 9 move relative to each other. The relative movement of the two moving blocks 9 causes the two driving disks 11 to move relative to each other. The relative movement of the two driving disks 11 causes the two limit rings 13 to move relative to each other, and the rolled plastic film on the unwinding roller 10 is aligned in the center to facilitate subsequent lamination. When the moving block 9 moves inward, it drives the two insertion rods 15 to move inward, so that the two circular sleeves 14 are aligned relative to each other. The inward movement causes the two guide rollers 17 to move inward, and after the circular sleeve 14 is moved inward alone to slide the insertion rod 15 out, the circular sleeve 14 can be fixed to the circular rod 8 alone by bolts. In addition, the insertion rod 15 is mainly used for basic guide positioning. According to the characteristics of different films, the circular sleeve 14 can be rotated alone to adjust the guide roller 17; the torsion rod 19 is rotated to move the friction plate 21. When the friction plate 21 contacts the contact plate 22, a damping effect is achieved according to the degree of extrusion, and the bolt is rotated to fix the position of the torsion rod 19 to prevent the unwinding roller 10 from rotating too fast.

[0030] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, numerous modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A film-laminating and tightening mechanism, comprising a base (1), characterized in that: The top of the machine base (1) is fixedly connected to two equipment frames (2), the tops of the two equipment frames (2) are fixedly connected to a frame (6), the outer walls of the two frames (6) are rotatably connected to a screw rod (7), the two screw rods (7) are rotatably connected to the same round rod (8), the outer walls of the two screw rods (7) are threadedly sleeved with a moving block (9), a reeling roller (10) is rotatably connected between the two frames (6), the outer wall of the reeling roller (10) is slidably sleeved with a driving disk (11), the outer wall of the driving disk (11) is rotatably connected to a limiting ring (13), the two limiting rings (13) are sleeved on the reeling roller (10), the moving block ( The outer wall of the round rod (9) is fixedly connected with a connecting rod (12), the bottom of the connecting rod (12) is fixedly connected with the outer wall of the driving disk (11), the outer wall of the round rod (8) is slidingly sleeved with two round sleeves (14), the outer walls of the two round sleeves (14) are each provided with a through hole, the inner wall of the through hole is slidingly connected with an insertion rod (15), the outer walls of the two moving blocks (9) are each provided with a socket, the inner walls of the two sockets are respectively slidably connected with one end of the two insertion rods (15), the outer walls of the two round sleeves (14) are fixedly connected with a fixing rod (16), one end of the fixing rod (16) is rotatably connected with a guide roller (17), and the outer wall of the frame (6) is provided with a damping mechanism.

2. A film-coated tensioning mechanism according to claim 1, characterized in that: The damping mechanism comprises a friction plate (21), a protective sleeve (18) is fixedly connected to the outer wall of the frame (6), an assembly hole is opened on the outer wall of the protective sleeve (18), a torsion rod (19) is slidably connected to the inner wall of the assembly hole, a spring (20) is sleeved on the outer wall of the torsion rod (19), one end of the torsion rod (19) is fixedly connected to the outer wall of the friction plate (21), and one end of the unwinding roller (10) is fixedly connected to the contact plate (22).

3. The film-coated tensioning mechanism according to claim 1, characterized in that: A belt conveyor (3) is installed between the two equipment frames (2), and a squeezing roller (4) and a winding roller (5) are rotatably connected between the two equipment frames (2).

4. The laminating and tightening mechanism according to claim 1, characterized in that: An outer wall of one of the frames (6) is provided with a mounting hole, an inner wall of the mounting hole is fixedly provided with a bearing, and an inner ring of the bearing is fixedly connected to the outer wall of the unwinding roller (10).

5. The laminating and tightening mechanism according to claim 2, characterized in that: One end of the spring (20) contacts the outer wall of the friction plate (21), and the other end of the spring (20) contacts the inner wall of the protective sleeve (18).

6. The laminating and tightening mechanism according to claim 1, characterized in that: The outer walls of the circular sleeve (14) and the torsion rod (19) are both provided with threaded holes, and the inner walls of the threaded holes are threadedly connected with bolts.

7. The laminating and tightening mechanism according to claim 1, characterized in that: The outer wall of the round rod (8) is fixedly connected with a T-shaped limit strip (23), and the two ends of the T-shaped limit strip (23) are respectively fixedly connected to the tops of the two frames (6).

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