Film covering device for plastic woven bag production

Abstract

The utility model discloses a film laminating device for plastic woven bag production, which comprises a film laminating box, two ends of the film laminating box are provided with material penetrating ports, and a plurality of conveying roller groups corresponding to the material penetrating ports are arranged in the film laminating box; according to the utility model, the glue spraying device is arranged on the left sides of the two groups of film rollers and the hot pressing rollers in the laminating box, and the liquid pump on the surface of the liquid guide pipe is started to work, so that the liquid glue in the glue storage box is injected into the two glue supply pipes of the glue spraying device in a split-flow manner under the action of the liquid guide pipe; a plurality of spray heads on the surface of a glue supply pipe penetrate through the rectangular openings to spray glue liquid to the two faces of the plastic woven bag, the plastic woven bag is conveyed along with the conveying roller set, the hot pressing roller in the rotating state is promoted to drive the film roller to unwind the film, the film is laid at the two ends of the plastic woven bag, and the connection tightness of the plastic woven bag and the film roller is kept through the glue liquid. And the effects of double-sided laminating and laminating hollowing prevention are achieved by adopting a mode of combining glue spraying and hot pressing.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic woven bag processing, in particular to a film laminating device for producing plastic woven bags. Background Art

[0002] With the rapid development of people's lives, laminating machines are widely used in the production and processing of industrial products. Laminating machines are special equipment for paper, board materials, and mounting films. The film-carrying roller and the laminating roller cooperate to perform lamination to form a paper-plastic integrated product. Laminating machines have a wide range of applications and stable and reliable processing performance. They are currently widely used laminating equipment in China. When the existing laminating device for plastic woven bag production is laminating the plastic bag, gaps are easily left between the plastic bag and the film, resulting in cavities in the lamination, which affects the lamination quality.

[0003] After searching, announcement number CN211416484U is a film coating device for producing plastic woven bags, including a lifting base, a shell is provided at the upper end of the lifting base, and an input port and an output port are respectively provided on both sides of the shell, a conveying roller driven by a first motor is provided on the outside of one side of the shell corresponding to the input port, and an output roller driven by a second motor is provided on the outside of the other side of the shell corresponding to the output port, a workbench is provided at the upper end of the lifting base inside the shell, a support plate is provided for sliding inside the workbench, a plurality of springs are provided at the bottom of the support plate, a plurality of support rods are provided at the upper end of the support plate, the upper ends of the support rods extend out of the workbench and are connected to the support rollers, a lower pressure roller is provided between the adjacent support rods at the upper end of the workbench, an upper pressure roller is provided above the lower pressure roller, and the upper pressure roller is arranged on the shell through a lifting mechanism, a hot pressing roller is provided inside the shell corresponding to the input port, a film roller is provided on the inner top wall of the shell, and a cold air fan is provided on the inner top wall of the shell corresponding to the output port.

[0004] In the above scheme, the film and the plastic woven bag can be hot-pressed together by the set hot pressing rollers. The multiple upper pressing rollers and lower pressing rollers can make the plastic woven bag fit more tightly to the film, which can effectively avoid bubbles in the coating. However, as the heat dissipates, there will still be gaps between the film and the plastic woven bag, and hollowing will occur during use.

[0005] To this end, a film laminating device for the production of plastic woven bags is proposed, which has the advantages of double-sided laminating and anti-air-drum, thereby solving the problems in the above-mentioned background technology. Utility Model Content

[0006] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a film covering device for producing plastic woven bags.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a film coating device for the production of plastic woven bags, comprising a film coating box, both ends of the film coating box are provided with feeding ports, and a plurality of conveying roller groups are arranged inside the film coating box corresponding to the feeding ports, a glue spraying device is provided between the two conveying roller groups on the left side of the film coating box, and two hot pressing rollers are provided on the right side of the glue spraying device, and each hot pressing roller is correspondingly installed with a film roller, a bidirectional screw is provided between the two conveying roller groups on the right side of the film coating box, and the surface of the bidirectional screw is screwed with two threaded sleeves, and each of the threaded sleeves A guide block is fixed on the top, and a guide rod is installed on the surface of the guide block, and the end of the guide rod is connected to the inner wall of the coating box. A cutting knife is fixed to the bottom of each threaded sleeve, and a V-shaped blade is provided on the surface of the cutting knife corresponding to the plastic woven bag conveying track. A glue storage box is fixed on the outer wall of the coating box, and the bottom of the glue storage box is connected to a liquid guide pipe. A liquid pump is installed on the surface of the liquid guide pipe, and one end of the liquid guide pipe is connected to two glue supply pipes through a tee. The two glue supply pipes respectively pass through the coating box and extend to the inside of the glue spraying device, and a number of nozzles are installed on the facing surfaces of the two glue supply pipes.

[0008] As a further description of the above technical solution: the left end of the bidirectional screw passes through the film coating box and is fixedly connected to a handwheel, and the right end of the bidirectional screw is rotatably connected to the inner wall of the film coating box through a shaft seat.

[0009] As a further description of the above technical solution: a waste discharge inclined plate welded to the inner wall of the film covering box is provided below the cutting knife, and a waste discharge port is provided on the right end surface of the film covering box corresponding to the waste discharge inclined plate.

[0010] As a further description of the above technical solution: the bidirectional screw, threaded sleeve, cutting knife, guide block and guide rod constitute a trimming mechanism, and two guide rods are interspersed on the surface of the guide block and are arranged parallel to each other.

[0011] As a further description of the above technical solution: the glue spraying device is a horizontal U-shaped structure as a whole, and rectangular openings are opened on both sides of the inner side of the glue spraying device corresponding to the nozzles.

[0012] As a further description of the above technical solution: a film coil is wound around the surface of the film roller, and one end of the film coil is wound and connected to the hot pressing roller.

[0013] As a further description of the above technical solution: T-shaped legs are welded on both sides of the glue supply hose, and the T-shaped legs are fixedly connected to the inner wall of the glue spraying device by screws.

[0014] The utility model has the following beneficial effects:

[0015] In the utility model, a glue spraying device is provided on the left side of the two groups of film rollers and the hot pressing roller in the laminating box. By starting the liquid pump on the surface of the liquid guide tube, the liquid glue in the glue storage box is caused to flow into the two glue supply pipes of the glue spraying device in a diverting manner under the action of the liquid guide pipe, and then a number of nozzles on the surface of the glue supply pipe spray glue on both sides of the plastic woven bag through the rectangular opening. As the conveying roller group conveys the plastic woven bag, the rotating hot pressing roller drives the film roller to unwind the film, and lays the film on both ends of the plastic woven bag. The glue maintains the tightness of the connection between the two. Compared with the existing technology, the combination of glue spraying and hot pressing is used to achieve the effect of double-sided lamination and prevention of lamination hollowing.

[0016] In the utility model, a bidirectional screw, a threaded sleeve, a cutting knife, a guide block and a guide rod are adopted to form a cutting mechanism for the excess edges of the film. The bidirectional screw is rotated by a hand wheel to cause the two threaded sleeves screwed on the two sets of threads in opposite directions of the bidirectional screw to move toward each other, so that the two threaded sleeves drive the corresponding cutting knives to move toward each other, and the relative sliding of the guide block and the guide rod at the top of the threaded sleeve is used to maintain the stability of its movement, so that the spacing between the two cutting knives is adapted to the size of the plastic woven bag. As the conveyor roller group conveys the plastic woven bag, the V-shaped blade grooves of the two cutting knives can cut the excess edges on both sides of the film, which is beneficial to ensuring the aesthetics of the plastic woven bag after lamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the internal structure of a film laminating device for producing plastic woven bags according to the present invention;

[0018] Figure 2 This is a left view of a film laminating device for producing plastic woven bags according to the utility model;

[0019] Figure 3 This is a structural schematic diagram of a glue spraying device of a film coating device for producing plastic woven bags according to the utility model;

[0020] Figure 4 The utility model is a schematic diagram of the structure of the edge cutting mechanism of the laminating device for producing plastic woven bags.

[0021] Legend:

[0022] 1. Laminating box; 2. Material feeding port; 3. Glue spraying device; 4. Film roller; 5. Hot pressing roller; 6. Bidirectional screw; 7. Threaded sleeve; 8. Conveyor roller assembly; 9. Cutter; 10. Glue supply hose; 11. Spray nozzle; 12. T-shaped support foot; 13. Waste discharge ramp; 14. Waste discharge port; 15. Guide block; 16. Guide rod; 17. Glue storage box; 18. Liquid pump; 19. Liquid guide tube; 20. Rectangular port. DETAILED DESCRIPTION

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

[0024] According to an embodiment of the present utility model, a film laminating device for producing plastic woven bags is provided.

[0025] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. Figure 1-4 As shown, according to an embodiment of the present invention, a film coating device for producing plastic woven bags comprises a film coating box 1, both ends of the film coating box 1 are provided with a feeding port 2, and a plurality of conveying roller groups 8 are arranged inside the film coating box 1 corresponding to the feeding port 2, a glue spraying device 3 is provided between the two conveying roller groups 8 on the left side of the film coating box 1, and two hot pressing rollers 5 are provided on the right side of the glue spraying device 3, and each hot pressing roller 5 is correspondingly installed with a film roller 4, a bidirectional screw 6 is provided between the two conveying roller groups 8 on the right side of the film coating box 1, and the surface of the bidirectional screw 6 is screwed with two threaded sleeves 7, a guide block 15 is fixed on the top of each threaded sleeve 7, and a guide rod 16 is inserted and installed on the surface of the guide block 15, and the end of the guide rod 16 is connected to the inner wall of the film coating box 1, a cutting knife 9 is fixed to the bottom of each threaded sleeve 7, and the surface of the cutting knife 9 is provided with a V-shaped blade corresponding to the plastic woven bag conveying track, the film coating box 1 A glue storage box 17 is fixed to the outer wall surface of the glue storage box 17, and a liquid guide tube 19 is connected to the bottom of the glue storage box 17. A liquid pump 18 is installed on the surface of the liquid guide tube 19, and one end of the liquid guide tube 19 is connected to two glue supply hoses 10 through a tee. The two glue supply hoses 10 respectively pass through the coating box 1 and extend to the inside of the glue spraying device 3, and a number of nozzles 11 are installed on the facing surfaces of the two glue supply hoses 10. The conveying roller group 8 of the present device is composed of an upper active roller and a lower driven roller. The active roller shaft of the conveying roller group 8 is equipped with a motor. The principle of the hot pressing roller 5 is an existing known technology, and there are mature products. Therefore, its principle is not further explained. The control method of the present utility model is to control by manually starting and shutting down the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in this field. Moreover, the present utility model is mainly used to protect the mechanical device, so the present utility model no longer explains the control method and wiring arrangement in detail.

[0026] In one embodiment, the left end of the bidirectional screw 6 passes through the coating box 1 and is fixed with a handwheel, and the right end of the bidirectional screw 6 is rotatably connected to the inner wall of the coating box 1 through an axle seat. Through the setting of the handwheel, the distance between the two cutting knives 9 can be easily adjusted, which is suitable for the cutting needs of the coating edges of plastic woven bags of different sizes.

[0027] In one embodiment, a waste discharge inclined plate 13 welded to the inner wall of the coating box 1 is provided below the cutting knife 9, and a waste discharge port 14 is provided on the right end face of the coating box 1 corresponding to the waste discharge inclined plate 13. Through the setting of the waste discharge inclined plate 13 and the waste discharge port 14, the cut waste can be easily discharged from the waste discharge port 14 under the guidance of the waste discharge inclined plate 13.

[0028] In one embodiment, the bidirectional screw 6, the threaded sleeve 7, the cutting knife 9, the guide block 15, and the guide rod 16 constitute a trimming mechanism. Two guide rods 16 are interspersed on the surface of the guide block 15, and the two guide rods 16 are arranged in parallel. Through the setting of the trimming mechanism, it is easy to cut the excess film edge, thereby increasing the aesthetics of the plastic woven bag after coating.

[0029] In one embodiment, the glue spraying device 3 is a horizontal U-shaped structure as a whole, and rectangular openings 20 are opened on both sides of the inner side of the glue spraying device 3 corresponding to the nozzle 11. Through the setting of the glue spraying device 3, it can be set on the conveying track of the plastic woven bag. The rectangular opening 20 is used to make way for the nozzle 11, which facilitates double-sided glue spraying of the plastic woven bag.

[0030] In one embodiment, a film roll is wrapped around the surface of the film roller 4, and one end of the film roll is wrapped and connected to the hot pressing roller 5. Through the setting of the film roller 4, it is easy to carry the film roll, and through the setting of the hot pressing roller 5, it is easy to unwind the film and perform hot pressing treatment on the film.

[0031] In one embodiment, T-shaped legs 12 are welded on both sides of the glue supply hose 10, and the T-shaped legs 12 are fixedly connected to the inner wall of the glue spraying device 3 by screws. The setting of the T-shaped legs 12 facilitates the installation of the glue supply hose 10 and increases the stability of the glue supply hose 10 in applying glue.

[0032] Working principle:

[0033] When in use, first pass the plastic woven bag to be coated through the multiple groups of conveying rollers 8 of the coating box 1, then start the conveying roller group 8 and the hot pressing roller 5 to work. When coating, by starting the liquid pump 18 on the surface of the liquid guide tube 19, the liquid glue in the glue storage box 17 is caused to flow into the two glue supply pipes 10 of the glue spraying device 3 in a diverted manner under the action of the liquid guide pipe 19, and then the glue is sprayed on both sides of the plastic woven bag by several nozzles 11 on the surface of the glue supply pipe 10 through the rectangular opening 20. As the plastic woven bag is transported by the conveying roller group 8, the rotating hot pressing roller 5 drives the film roller 4 to unwind the film, and the film is laid on both ends of the plastic woven bag, and is hot-pressed and glued by the hot pressing roller 5. The tightness of the connection between the two is maintained in this way. At the same time, the bidirectional screw 6 is rotated by the hand wheel, so that the two threaded sleeves 7 screwed on the two sets of opposite threads of the bidirectional screw 6 move toward each other, so that the two threaded sleeves 7 drive the corresponding cutting knives 9 to move toward each other, and the relative sliding of the guide block 15 and the guide rod 16 at the top of the threaded sleeve 7 is used to maintain the stability of its movement, so that the spacing between the two cutting knives 9 is adapted to the size of the plastic woven bag. As the conveying roller group 8 transports the plastic woven bag, the V-shaped blade grooves of the two cutting knives 9 can cut the excess edges on both sides of the film, and the cut waste is discharged from the waste outlet 14 under the guidance of the waste discharge inclined plate 13.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A film laminating device for producing plastic woven bags, comprising a film laminating box (1), characterized in that: Both ends of the laminating box (1) are provided with a material passage opening (2), and a plurality of conveying roller groups (8) are arranged inside the laminating box (1) corresponding to the material passage opening (2), a glue spraying device (3) is provided between the two conveying roller groups (8) on the left side of the laminating box (1), and two hot pressing rollers (5) are provided on the right side of the glue spraying device (3), and each hot pressing roller (5) is correspondingly installed with a film roller (4), a bidirectional screw (6) is provided between the two conveying roller groups (8) on the right side of the laminating box (1), and the surface of the bidirectional screw (6) is screwed with two threaded sleeves (7), and a guide block (15) is fixed on the top of each threaded sleeve (7), and a guide rod is installed through the surface of the guide block (15) (16), and the end of the guide rod (16) is connected to the inner wall of the film coating box (1), the bottom of each threaded sleeve (7) is fixed with a cutting knife (9), and the surface of the cutting knife (9) is provided with a V-shaped blade corresponding to the plastic woven bag conveying track, the outer wall of the film coating box (1) is fixed with a glue storage box (17), and the bottom of the glue storage box (17) is connected with a liquid guide tube (19), the surface of the liquid guide tube (19) is installed with a liquid pump (18), and one end of the liquid guide tube (19) is connected with two glue supply hoses (10) through a tee, the two glue supply hoses (10) respectively pass through the film coating box (1) and extend to the inside of the glue spraying device (3), and the facing surfaces of the two glue supply hoses (10) are both installed with a plurality of nozzles (11).

2. The film laminating device for producing plastic woven bags according to claim 1, characterized in that: The left end of the bidirectional screw (6) passes through the film laminating box (1) and is fixedly connected to a handwheel, and the right end of the bidirectional screw (6) is rotatably connected to the inner wall surface of the film laminating box (1) through a shaft seat.

3. The film laminating device for producing plastic woven bags according to claim 1, characterized in that: A waste discharge inclined plate (13) welded to the inner wall of the film laminating box (1) is provided below the cutting knife (9), and a waste discharge port (14) is provided on the right end surface of the film laminating box (1) corresponding to the waste discharge inclined plate (13).

4. The film laminating device for producing plastic woven bags according to claim 1, characterized in that: The bidirectional screw (6), the threaded sleeve (7), the cutting knife (9), the guide block (15), and the guide rod (16) constitute a trimming mechanism. Two guide rods (16) are interspersed on the surface of the guide block (15), and the two guide rods (16) are arranged in parallel.

5. The film laminating device for producing plastic woven bags according to claim 1, characterized in that: The glue spraying device (3) is a horizontal U-shaped structure as a whole, and rectangular openings (20) are provided on both inner sides of the glue spraying device (3) corresponding to the spray heads (11).

6. The film laminating device for producing plastic woven bags according to claim 1, characterized in that: A film coil is wound on the surface of the film roller (4), and one end of the film coil is wound and connected to the hot pressing roller (5).

7. The film laminating device for producing plastic woven bags according to claim 1, characterized in that: T-shaped legs (12) are welded to both the left and right sides of the glue supply hose (10), and the T-shaped legs (12) are fixedly connected to the inner wall of the glue spraying device (3) via screws.

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