Film laminating machine for plastic packaging

Abstract

The invention relates to the technical field of plastic film laminating, in particular to a plastic packaging film laminating machine which comprises a machine body, the left end of the machine body is fixedly connected with an extension plate, the interior of the extension plate is rotationally connected with a winding roller, the right end of the machine body is fixedly connected with a support, and the exterior of the support is rotationally connected with an unwinding roller; two sets of placing rollers are connected into the supporting frame in an inserting and pulling mode, a sleeve is fixedly connected between the two sets of placing rollers, an extension cylinder is fixedly connected to one end of the sleeve, moving sleeves are symmetrically connected to the outer portion of the sleeve in a sliding mode, mounting bases are fixedly connected to the outer portions of the moving sleeves, and connecting rods are rotationally connected into the mounting bases. And the connecting rods are designed in a staggered structure. The device has the beneficial effects that through the design of the expansion plates and the arc-shaped plates, materials and films can be fixed, and the overall applicability is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic film laminating, and particularly to a film laminating machine for plastic packaging. Background Art

[0002] The film laminating machine mainly presses and laminates a plastic film with a composite material to be laminated by setting a hot pressing roller. During the installation process of the materials and the film paper in the existing film laminating machine, after the material reel and the film paper reel are respectively installed on the loading shaft and the film loading shaft, two material positioning chucks and two film locking positioning chucks are also required. The material reel and the film paper reel are clamped and positioned respectively from both ends of the material reel and both ends of the film paper reel, and then a plurality of bolts on the positioning chucks are tightened so that one end of the bolts abuts against the loading shaft and the film loading shaft to complete the fixation of the positioning chucks, thereby realizing the installation and fixation of the material reel and the film paper reel.

[0003] In the prior art, the installation process of materials and film paper usually needs to be carried out manually, which is cumbersome to operate and inconvenient to use. Moreover, during the film laminating process, it is required that the film paper and the materials are aligned. Therefore, after the installation is completed, the positions of the film paper and the materials need to be adjusted repeatedly. In addition, the tension on the film paper and the composite pressure during the film laminating process are not easy to adjust. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a film laminating machine for plastic packaging. When using the film laminating machine for plastic packaging, the expansion of the extension plate outside the placing roller is set to fix the film, and at the same time, the design of the arc plate and the barrier ring is designed to facilitate the fixation of the materials.

[0005] The following is the technical solution of the present invention. A film laminating machine for plastic packaging includes: a machine body, a prolongation plate is fixedly connected to the left end of the machine body, a winding roller is rotatably connected inside the prolongation plate, a support is fixedly connected to the right end of the machine body, a unwinding roller is rotatably connected outside the support, one end of the top of the machine body is rotatably connected to a support frame, a placing roller is inserted and connected inside the support frame, there are two groups of placing rollers, a sleeve is fixedly connected between the two groups of placing rollers, one end of the sleeve is fixedly connected to an extension cylinder, a moving sleeve is symmetrically slidably connected to the outside of the sleeve, a mounting seat is fixedly connected to the outside of the moving sleeve, a connecting rod is rotatably connected inside the mounting seat, the connecting rods are designed in a staggered structure, a positioning column is rotatably connected at the connection of the two groups of connecting rods, one end of the connecting rod away from the mounting seat is rotatably connected to a barrier plate, and an extension plate is fixedly connected to the end of the barrier plate away from the connecting rod.

[0006] As a preferred embodiment of the present invention, the interior of the extension cylinder and the sleeve is in a mutually communicating state. A worm is rotatably connected inside the extension cylinder, and a worm gear is meshed and connected to the outside of the worm. A horizontal shaft is fixedly connected to the middle of the interior of the worm gear. The horizontal shaft extends into the interior of the extension cylinder and is rotatably connected to the extension cylinder. One end of the worm gear away from the horizontal shaft is fixedly connected to a bidirectional lead screw, and the bidirectional lead screw extends to the inner side wall of the sleeve and is rotatably connected to the sleeve.

[0007] As a preferred embodiment of the present invention, a limiting groove is provided on the outside of the sleeve, a limiting strip is fixedly connected inside the moving sleeve, the limiting strip extends into the limiting groove, and a collar is fixedly connected to the end of the limiting strip away from the moving sleeve. The collar is sleeved on the outside of the bidirectional lead screw, and the collar moves axially along the bidirectional lead screw.

[0008] As a preferred embodiment of the present invention, a connecting cylinder is fixedly connected inside the support frame. A disc is rotatably connected to one end of the connecting cylinder close to the placing roller. Arc-shaped grooves are symmetrically provided inside the disc. A cylinder is slidably connected inside the arc-shaped groove. A plug rod is fixedly connected to the outside of the cylinder. The plug rod extends to the outside of the connecting cylinder, and a rotating shaft is fixedly connected to the middle of the inside of the disc.

[0009] As a preferred embodiment of the present invention, a gear is fixedly connected to the outside of the rotating shaft. A handle is rotatably connected to one side of the connecting cylinder away from the disc. A first threaded rod is fixedly connected inside the handle. The first threaded rod extends into the connecting cylinder and is rotatably connected to the connecting cylinder. A threaded sleeve is threadedly connected to the outside of the first threaded rod, and a toothed plate is fixedly connected to the position corresponding to the gear at the bottom of the threaded sleeve.

[0010] As a preferred embodiment of the present invention, a placing groove is provided at the position corresponding to the plug rod inside one end of the placing roller close to the connecting cylinder. A first bearing is slidably connected to the side of the placing roller away from the support frame. A placing frame is fixedly connected to the top of the machine body and away from the support frame. One side of the placing frame is of an open design. The placing frame is adapted to the first bearing. A second threaded rod is threadedly connected inside the placing frame, and a gasket is rotatably connected to the bottom of the second threaded rod.

[0011] As a preferred embodiment of the present invention, a second bearing is fixedly connected to the inner side wall of the bracket. The unwinding roller is rotatably connected to the bracket through the second bearing. Springs are sleeved on both ends of the unwinding roller. A first sliding sleeve is slidably connected to the outside of the unwinding roller and close to the end where the two springs are close to each other. A second sliding sleeve is slidably connected to the side of the unwinding roller away from the first sliding sleeve. Guide seats are fixedly connected to the outside of the first sliding sleeve and the second sliding sleeve. Driven rods are rotatably connected to the outside of the guide seats. One end of the driven rod away from the guide seat is rotatably connected to an arc-shaped plate.

[0012] As a preferred embodiment of the present invention, a plurality of guide rollers are rotatably connected inside the machine body. A heating roller is rotatably connected on one side of the machine body away from the guide rollers. A chute is provided on the inner side wall of the machine body. A moving plate is slidably connected inside the chute. An adjusting roller is rotatably connected inside the moving plate. A third threaded rod is rotatably connected to the top of the moving plate. The third threaded rod extends to the top of the chute and is threadedly connected to the chute.

[0013] As a preferred embodiment of the present invention, a circular sleeve is fixedly connected to the outside of the winding roller. Transverse grooves are provided on the surface of the circular sleeve. Two barrier rings are symmetrically slidably connected to the outside of the circular sleeve.

[0014] As a preferred embodiment of the present invention, an extension rod is rotatably connected to one end of the winding roller. The extension rod passes through the outside of the circular sleeve and is rotatably connected to the circular sleeve. A reciprocating groove is provided on the outside of the extension rod and inside the circular sleeve. A positioning strip is fixedly connected to the inner wall of the barrier ring. The positioning strip passes through the transverse groove and extends into the reciprocating groove.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. In the present invention, by squeezing the arc-shaped plate, the driven rod then swings, and squeezes the first sliding sleeve and the second sliding sleeve. Subsequently, the first sliding sleeve and the second sliding sleeve move away from each other and squeeze the spring, causing the arc-shaped plate to approach the unwinding roller. Then, the material is sleeved on the outside of the unwinding roller. Finally, through the stretching and energy storage of the spring, the arc-shaped plate is driven to reset, completing the fixation of materials of different sizes.

[0017] 2. In the present invention, by making the worm and the worm gear engage with each other, the sleeve ring makes a translational movement on the outside of the bidirectional lead screw. Subsequently, the mounting seat moves synchronously with the moving sleeve and applies a thrust to the connecting rod. Then, the height of the connecting rod is adjusted, and the extension plate is lifted, causing the extension plate to gradually move away from the sleeve, thereby squeezing the film, facilitating the positioning and clamping of films of different diameters.

[0018] 3. In the present invention, after the material after film covering is wound around the outside of the circular sleeve, the extension rod is rotated. At this time, the reciprocating groove rotates synchronously with the extension rod. Meanwhile, the positioning strip is pushed by the reciprocating groove, and then the two barrier rings approach each other to position the wound material, effectively preventing the material from shifting after winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a schematic diagram of the overall internal structure of the present invention;

[0021] Figure 3 is a schematic diagram of the placement roller structure of the present invention;

[0022] Figure 4 Schematic diagram of the sleeve structure of the present invention;

[0023] Figure 5 Schematic diagram of the movable sleeve structure of the present invention;

[0024] Figure 6 Schematic diagram of the connecting cylinder structure of the present invention;

[0025] Figure 7 Schematic diagram of the gear structure of the present invention;

[0026] Figure 8 Schematic diagram of the arc plate structure of the present invention;

[0027] Figure 9 Schematic diagram of the barrier ring structure of the present invention;

[0028] Figure 10 Schematic diagram of the internal structure of the reciprocating groove of the present invention;

[0029] In the figure: 1, body; 2, extension plate; 3, winding roller; 4, bracket; 5, unwinding roller; 6, support frame; 7, placing roller; 701, placing groove; 8, sleeve; 801, limiting groove; 9, extension cylinder; 10, movable sleeve; 11, mounting seat; 12, connecting rod; 13, baffle plate; 14, extension plate; 15, worm; 16, worm gear; 17, bidirectional lead screw; 18, limiting strip; 19, collar; 20, connecting cylinder; 21, disc; 22, arc groove; 23, inserting rod; 24, gear; 25, first threaded rod; 26, toothed plate; 27, placing frame; 28, spring; 29, first sliding sleeve; 30, second sliding sleeve; 31, driven rod; 32, arc plate; 33, guiding roller; 34, heating roller; 35, moving plate; 36, adjusting roller; 37, circular sleeve; 38, barrier ring; 39, extension rod; 40, reciprocating groove; 41, positioning strip. Detailed implementation manners

[0030] To make the technical problems solved by the present invention, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0031] Embodiment:

[0032] As Figures 1 to 10As shown, a film laminating machine for plastic packaging includes: a machine body 1, a prolonging plate 2 is fixedly connected to the left end of the machine body 1, a winding roller 3 is rotatably connected inside the prolonging plate 2, a bracket 4 is fixedly connected to the right end of the machine body 1, a unwinding roller 5 is rotatably connected to the outside of the bracket 4, one end of the top of the machine body 1 is rotatably connected to a support frame 6, a placing roller 7 is inserted and connected inside the support frame 6, there are two groups of placing rollers 7, a sleeve 8 is fixedly connected between the two groups of placing rollers 7, one end of the sleeve 8 is fixedly connected to an extension cylinder 9, the outside of the sleeve 8 is symmetrically and slidably connected with a moving sleeve 10, an installation seat 11 is fixedly connected to the outside of the moving sleeve 10, a connecting rod 12 is rotatably connected inside the installation seat 11, the connecting rod 12 is designed in a staggered structure, the connection part of the two connecting rods 12 is rotatably connected with a positioning column, the end of the connecting rod 12 away from the installation seat 11 is rotatably connected with a blocking plate 13, and an extension plate 14 is fixedly connected to the end of the blocking plate 13 away from the connecting rod 12. By sleeving the material on the outside of the placing roller 7, then sleeving the film on the outside of the placing roller 7, passing the other end of the material through the inside of the machine body 1, and finally winding it around the outside of the winding roller 3, then passing one end of the film through the inside of the machine body 1, and finally winding it around the surface of the material located outside the winding roller 3. By rotating the winding roller 3, the film and the material are rotated, and finally the film will adhere to the surface of the material to complete the film laminating work. When the film is sleeved on the outside of the extension plate 14, according to the width of the film, the two moving sleeves 10 can move relative to each other. Then the moving sleeves 10 slide on the outside of the sleeve 8, and then the installation seats 11 move synchronously with the moving sleeves 10 and apply a thrust to the connecting rods 12. Then the connection part of the connecting rods 12 swings around the positioning column as the center point, and then the height of the connecting rods 12 is adjusted, and the extension plate 14 is lifted, so that the extension plate 14 gradually moves away from the sleeve 8, thereby squeezing the film, facilitating the positioning and clamping of films with different diameters, and effectively preventing the film from shifting when the placing roller 7 rotates.

[0033] In this embodiment, the inside of the extension cylinder 9 and the sleeve 8 are in a mutually communicating state. A worm 15 is rotatably connected inside the extension cylinder 9, a worm gear 16 is meshed with the outside of the worm 15. The middle part inside the worm gear 16 is fixedly connected with a horizontal shaft, and the horizontal shaft extends into the inside of the extension cylinder 9 and is rotatably connected with the extension cylinder 9. One end of the worm gear 16 away from the horizontal shaft is fixedly connected with a bidirectional lead screw 17, and the bidirectional lead screw 17 extends to the inner side wall of the sleeve 8 and is rotatably connected with the sleeve 8. By rotating the worm 15, then the worm 15 rotates inside the extension cylinder 9 and engages with the worm gear 16, and then the worm gear 16 rotates. At the same time, the horizontal shaft and the bidirectional lead screw 17 provide a supporting force for the worm gear 16, facilitating the worm gear 16 to drive the bidirectional lead screw 17 to rotate.

[0034] In this embodiment, a limiting groove 801 is formed on the outer side of the sleeve 8, a limiting strip 18 is fixedly connected to the inside of the moving sleeve 10, the limiting strip 18 extends into the limiting groove 801, a collar 19 is fixedly connected to the end of the limiting strip 18 away from the moving sleeve 10, the collar 19 is sleeved on the outer side of the bidirectional lead screw 17, the collar 19 moves axially along the bidirectional lead screw 17, as the bidirectional lead screw 17 rotates, then a threading reaction occurs between the collar 19 and the bidirectional lead screw 17, and at the same time, the limiting strip 18 is limited by the limiting groove 801, so that the collar 19 makes a translational movement on the outer side of the bidirectional lead screw 17, and then the moving sleeve 10 moves closer to each other on the outer side of the sleeve 8.

[0035] In this embodiment, a connecting cylinder 20 is fixedly connected to the inside of the support frame 6, a disc 21 is rotatably connected to one end of the connecting cylinder 20 close to the placing roller 7, arc-shaped grooves 22 are symmetrically formed in the disc 21, a cylinder is slidably connected to the inside of the arc-shaped grooves 22, a plug rod 23 is fixedly connected to the outer side of the cylinder, the plug rod 23 extends to the outside of the connecting cylinder 20, a rotating shaft is fixedly connected to the middle of the inside of the disc 21, a gear 24 is fixedly connected to the outer side of the rotating shaft, a handle is rotatably connected to one side of the connecting cylinder 20 away from the disc 21, a first threaded rod 25 is fixedly connected to the inside of the handle, the first threaded rod 25 extends into the connecting cylinder 20 and is rotatably connected to the connecting cylinder 20, a threaded sleeve is threadedly connected to the outer side of the first threaded rod 25, and a toothed plate 26 is fixedly connected to the position of the threaded sleeve corresponding to the gear 24 at the bottom. By inserting one end of the placing roller 7 outside the connecting cylinder 20 and then rotating the handle, the first threaded rod 25 rotates inside the connecting cylinder 20, then a threading reaction occurs between the threaded sleeve and the first threaded rod 25, then the threaded sleeve makes a translational movement on the outer side of the first threaded rod 25, then drives the toothed plate 26 to make a translational movement synchronously and engage with the gear 24, transmits the moving force to the outer side of the gear 24, enables the gear 24 to drive the rotating shaft to rotate, the rotating shaft drives the disc 21 to rotate inside the connecting cylinder 20, at the same time, the arc-shaped grooves 22 move synchronously with the disc 21, then extrude the cylinder, and at the same time, the connecting cylinder 20 limits the plug rod 23, then a plurality of plug rods 23 expand outwards and are inserted into the placing groove 701 to clamp one end of the placing roller 7.

[0036] In this embodiment, a placement groove 701 is provided at a position inside the placement roller 7 corresponding to the insertion rod 23 near one end of the connection cylinder 20. A first bearing is slidably connected to the side of the placement roller 7 away from the support frame 6. One end of the top of the machine body 1 away from the support frame 6 is fixedly connected with a placement frame 27. One side of the placement frame 27 is designed to be open. The placement frame 27 is adapted to be used with the first bearing. A second threaded rod is threadedly connected inside the placement frame 27. A gasket is rotatably connected to the bottom of the second threaded rod. Then, the support frame 6 is rotated to swing the placement roller 7 so that the first bearing at the other end enters the inside of the placement frame 27. Finally, the second threaded rod is rotated, and the second threaded rod reacts with the placement frame 27 to make the gasket vertically descend inside the placement frame 27 and press the first bearing to fix the first bearing, thus completing the installation of the placement roller 7.

[0037] In this embodiment, a second bearing is fixedly connected to the inner side wall of the support 4. The unwinding roller 5 is rotatably connected to the support 4 through the second bearing. Springs 28 are sleeved on both ends of the unwinding roller 5. A first sliding sleeve 29 is slidably connected to the outside of the unwinding roller 5 near one end where the two springs 28 are close to each other. A second sliding sleeve 30 is slidably connected to the outside of the unwinding roller 5 on the side away from the first sliding sleeve 29. Guide seats are fixedly connected to the outside of the first sliding sleeve 29 and the second sliding sleeve 30. A driven rod 31 is rotatably connected to the outside of the guide seat. One end of the driven rod 31 away from the guide seat is rotatably connected to an arc-shaped plate 32. By squeezing the arc-shaped plate 32, the driven rod 31 then swings and squeezes the first sliding sleeve 29 and the second sliding sleeve 30. Then, the first sliding sleeve 29 and the second sliding sleeve 30 move away from each other and squeeze the springs 28 to make the arc-shaped plate 32 approach the unwinding roller 5. Then, the material is sleeved on the outside of the unwinding roller 5. Finally, through the stretching and energy storage of the springs 28, the arc-shaped plate 32 is driven to reset, thus completing the fixation of materials of different sizes.

[0038] In this embodiment, a plurality of guide rollers 33 are rotatably connected inside the machine body 1. A heating roller 34 is rotatably connected to one side of the machine body 1 away from the guide rollers 33. A chute is provided on the inner side wall of the machine body 1. A moving plate 35 is slidably connected inside the chute. An adjusting roller 36 is rotatably connected inside the moving plate 35. A third threaded rod is rotatably connected to the top of the moving plate 35. The third threaded rod extends to the top of the chute and is threadedly connected to the chute. By passing the material and the film through the guide rollers 33 respectively, the stability is greatly improved. Finally, the material and the film are simultaneously passed between the heating rollers 34, and the heating rollers 34 heat the film and the material to complete the film laminating work. After the film and the material are laminated, they pass through the bottom of the adjusting roller 36. By rotating the third threaded rod, the moving plate 35 is then driven to slide inside the chute, thereby adjusting the height of the adjusting roller 36 to facilitate the adjustment of the tension of the material and the film.

[0039] Furthermore, in this embodiment, a circular sleeve 37 is fixedly connected to the outside of the winding roller 3. A transverse groove is formed on the surface of the circular sleeve 37. Two barrier rings 38 are symmetrically and slidably connected to the outside of the circular sleeve 37. One end of the winding roller 3 is rotatably connected to an extension rod 39. The extension rod 39 passes through the outside of the circular sleeve 37 and is rotatably connected to the circular sleeve 37. A reciprocating groove 40 is formed on the outside of the extension rod 39 and inside the circular sleeve 37. A positioning strip 41 is fixedly connected to the inner wall of the barrier ring 38. The positioning strip 41 passes through the transverse groove and extends into the reciprocating groove 40. By winding the film-coated material around the outside of the circular sleeve 37 and then rotating the extension rod 39, at this time the reciprocating groove 40 rotates synchronously with the extension rod 39. At the same time, the positioning strip 41 is pushed by the reciprocating groove 40, and then the two barrier rings 38 approach each other to position the wound material, effectively preventing the material from shifting after winding.

[0040] Embodiment: By inserting one end of the placing roller 7 into the outside of the connecting cylinder 20, and then rotating the handle, the first threaded rod 25 rotates inside the connecting cylinder 20. Subsequently, the threaded sleeve reacts with the first threaded rod 25 in a threaded manner. Then, the threaded sleeve moves translationally outside the first threaded rod 25, and then drives the toothed plate 26 to move translationally synchronously and engage with the gear 24, conducting the moving force to the outside of the gear 24. The gear 24 drives the rotating shaft to rotate, and the rotating shaft drives the disc 21 to rotate inside the connecting cylinder 20. At the same time, the arc-shaped groove 22 moves synchronously with the disc 21, and then squeezes the cylinder. At the same time, the connecting cylinder 20 limits the insertion rod 23. Then, multiple insertion rods 23 expand outward and insert into the placing groove 701 to clamp one end of the placing roller 7. By squeezing the arc-shaped plate 32, the driven rod 31 swings and squeezes the first sliding sleeve 29 and the second sliding sleeve 30. Then, the first sliding sleeve 29 and the second sliding sleeve 30 move away from each other and squeeze the spring 28, causing the arc-shaped plate 32 to approach the unwinding roller 5. Then, the material is sleeved on the outside of the unwinding roller 5. Finally, through the stretching and energy storage of the spring 28, the arc-shaped plate 32 is driven to reset, completing the fixation of materials of different sizes. When the film is sleeved on the outside of the extension plate 14, according to the width of the film, by rotating the worm 15, the worm 15 rotates inside the extension cylinder 9 and engages with the worm gear 16. Then, the worm gear 16 rotates. At the same time, the horizontal shaft and the bidirectional lead screw 17 provide a supporting force for the worm gear 16, facilitating the worm gear 16 to drive the bidirectional lead screw 17 to rotate. Then, the collar 19 reacts with the bidirectional lead screw 17 in a threaded manner. At the same time, the limiting strip 18 is limited by the limiting groove 801, enabling the collar 19 to move translationally outside the bidirectional lead screw 17. Then, the moving sleeves 10 approach each other outside the sleeve 8. Subsequently, the mounting seat 11 moves synchronously with the moving sleeves 10 and applies a thrust to the connecting rod 12. Then, the connection point of the connecting rod 12 swings around the positioning column as the center point. Then, the height of the connecting rod 12 is adjusted, and the extension plate 14 is lifted, causing the extension plate 14 to gradually move away from the sleeve 8, thereby squeezing the film and facilitating the positioning and clamping of films of different diameters. Then, the support frame 6 is rotated, causing the placing roller 7 to swing, and the first bearing at its other end enters the placing frame 27. Finally, the second threaded rod is rotated, and the second threaded rod reacts with the placing frame 27, causing the gasket to vertically descend inside the placing frame 27 and squeeze the first bearing to fix the first bearing, completing the installation of the placing roller 7. By passing the material and the film through the guiding roller 33 respectively, the stability is greatly improved. Finally, the material and the film are simultaneously passed between the heating rollers 34, and the heating rollers 34 heat the film and the material to complete the film laminating work. When the film and the material are laminated, they pass through the bottom of the adjusting roller 36. By rotating the third threaded rod,Subsequently, it drives the moving plate 35 to slide inside the chute, thereby realizing the adjustment of the height of the adjusting roller 36, facilitating the adjustment of the tension of the material and the film. By winding the material after film covering around the outside of the circular sleeve 37, and then rotating the extension rod 39, at this time, the reciprocating groove 40 rotates synchronously with the extension rod 39. At the same time, the positioning strip 41 is pushed by the reciprocating groove 40, and then the two barrier rings 38 approach each other to position the wound material, effectively preventing the phenomenon of material offset after winding.

[0041] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Obviously, those skilled in the art can make various changes and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the equivalent technology of the present invention, the present invention also intends to include these modifications and variations.

Claims

1. A film laminating machine for plastic packaging, characterized in that, Including: The machine body, the left end of the machine body is fixedly connected with an extension plate, a winding roller is rotatably connected inside the extension plate, the right end of the machine body is fixedly connected with a bracket, a unwinding roller is rotatably connected outside the bracket, one end of the top of the machine body is rotatably connected with a support frame, a placing roller is inserted and connected inside the support frame, there are two groups of placing rollers, a sleeve is fixedly connected between the two groups of placing rollers, one end of the sleeve is fixedly connected with an extension cylinder, the outside of the sleeve is symmetrically slidably connected with a moving sleeve, an installation seat is fixedly connected to the outside of the moving sleeve, a connecting rod is rotatably connected inside the installation seat, the connecting rods are designed in a staggered structure, a positioning column is rotatably connected at the connection of the two connecting rods, one end of the connecting rod away from the installation seat is rotatably connected with a blocking plate, and an extension plate is fixedly connected to the end of the blocking plate away from the connecting rod.

2. The laminating machine for plastic packaging according to claim 1, wherein The inside of the extension cylinder and the sleeve is in a mutually communicating state, a worm is rotatably connected inside the extension cylinder, a worm gear is meshed with the outside of the worm, a horizontal shaft is fixedly connected to the middle of the inside of the worm gear, the horizontal shaft extends into the inside of the extension cylinder and is rotatably connected with the extension cylinder, and a bidirectional lead screw is fixedly connected to the end of the worm gear away from the horizontal shaft, and the bidirectional lead screw extends to the inner side wall of the sleeve and is rotatably connected with the sleeve.

3. The laminating machine for plastic packaging according to claim 2, wherein, A limiting groove is opened on the outside of the sleeve, a limiting strip is fixedly connected to the inside of the moving sleeve, the limiting strip extends into the inside of the limiting groove, a collar is fixedly connected to the end of the limiting strip away from the moving sleeve, the collar is sleeved on the outside of the bidirectional lead screw, and the collar moves axially along the bidirectional lead screw.

4. A film laminating machine for plastic packaging according to claim 1, characterized in that, A connecting cylinder is fixedly connected inside the support frame, a disc is rotatably connected at one end of the connecting cylinder close to the placing roller, arc-shaped grooves are symmetrically opened inside the disc, a cylinder is slidably connected inside the arc-shaped grooves, a plug rod is fixedly connected to the outside of the cylinder, the plug rod extends to the outside of the connecting cylinder, and a rotating shaft is fixedly connected to the middle of the inside of the disc.

5. A film laminating machine for plastic packaging according to claim 4, characterized in that, A gear is fixedly connected to the outside of the rotating shaft, a handle is rotatably connected to one side of the connecting cylinder away from the disc, a first threaded rod is fixedly connected to the inside of the handle, the first threaded rod extends into the inside of the connecting cylinder and is rotatably connected with the connecting cylinder, a threaded sleeve is threadedly connected to the outside of the first threaded rod, and a toothed plate is fixedly connected to the position corresponding to the gear at the bottom of the threaded sleeve.

6. A film laminating machine for plastic packaging according to claim 4, characterized in that, A placing groove is opened at the position corresponding to the plug rod inside one end of the placing roller close to the connecting cylinder, a first bearing is slidably connected to the side of the placing roller away from the support frame, a placing frame is fixedly connected to the top of the machine body and away from the support frame, one side of the placing frame is open, the placing frame is adapted to the first bearing, a second threaded rod is threadedly connected to the inside of the placing frame, and a gasket is rotatably connected to the bottom of the second threaded rod.

7. A film laminating machine for plastic packaging according to claim 1, characterized in that, A second bearing is fixedly connected to the inner side wall of the bracket, the unwinding roller is rotatably connected with the bracket through the second bearing, springs are sleeved on both ends of the unwinding roller, a first sliding sleeve is slidably connected to the outside of the unwinding roller and close to the end where the two springs are close to each other, a second sliding sleeve is slidably connected to the side of the unwinding roller away from the first sliding sleeve, guide seats are fixedly connected to the outside of the first sliding sleeve and the second sliding sleeve, driven rods are rotatably connected to the outside of the guide seats, and arc-shaped plates are rotatably connected to the ends of the driven rods away from the guide seats.

8. A film laminating machine for plastic packaging according to claim 1, characterized in that, A plurality of guide rollers are rotatably connected inside the machine body. A heating roller is rotatably connected on one side of the inside of the machine body and away from the guide rollers. A sliding groove is formed on the inner side wall of the machine body. A moving plate is slidably connected inside the sliding groove. An adjusting roller is rotatably connected inside the moving plate. A third threaded rod is rotatably connected to the top of the moving plate. The third threaded rod extends to the top of the sliding groove and is threadedly connected to the sliding groove.

9. A film laminating machine for plastic packaging according to claim 1, characterized in that, A circular sleeve is fixedly connected to the outside of the winding roller. A transverse groove is formed on the surface of the circular sleeve. Two blocking rings are symmetrically slidably connected to the outside of the circular sleeve.

10. A film laminating machine for plastic packaging according to claim 9, characterized in that, One end of the winding roller is rotatably connected to an extension rod. The extension rod passes through the outside of the circular sleeve and is rotatably connected to the circular sleeve. A reciprocating groove is formed on the outside of the extension rod and inside the circular sleeve. A positioning strip is fixedly connected to the inner wall of the blocking ring. The positioning strip passes through the transverse groove and extends into the reciprocating groove.

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