A plastic woven bag hot-melt edge sealing device assisted by a guide

Abstract

The utility model relates to the technical field of plastic woven bag processing, disclose a kind of plastic woven bag hot melt edge locking device of auxiliary orientation, including two chassis, the upper surface of two chassis is equipped with conveyor belt, and the side fixed connection of conveyor belt has edge locking platform, and the side fixed connection of edge locking platform has mounting bracket, and the side fixed mounting of mounting bracket has stepper motor, and the output of stepper motor is fixedly connected with screw rod, and the outside of screw rod is connected with moving frame, and the inside fixed mounting of moving frame has electric cylinder one, and the output of electric cylinder one is fixedly connected with hot press plate.The utility model utilizes limiting rod to limit woven bag on conveyor belt, and woven bag is pressed tightly and laid on edge locking platform by two scrape poles that can be pressed to translate, reduce wrinkle to make heat and pressure evenly transmit, and rotating column can guide woven bag in transmission to prevent skew, its rotatable characteristics improve conveying smoothness, and spacing is adjustable to adapt to woven bag of different width.

Description

Technical Field

[0001] This utility model relates to the field of plastic woven bag processing technology, and in particular to a heat-sealing device for plastic woven bags with auxiliary guidance. Background Technology

[0002] Plastic woven bags are packaging containers made of plastic through a weaving process. They are widely used in industry, agriculture, logistics and other fields. The main raw materials of plastic woven bags are polypropylene or polyethylene, which are thermoplastic plastics. They melt and soften when heated, and then solidify again after cooling, which makes it easy to lock the edges during processing.

[0003] Traditionally, when processing woven bags for edge sealing, the bags, conveyed by a conveyor belt, are placed under a hot press plate, which presses down directly to seal the edges. However, because different batches of woven bags vary in size, if the bags cannot fit the width of the conveyor belt, they are prone to skewing during transport, leading to crooked edge sealing and reduced quality after processing. Furthermore, woven bags are prone to bending and wrinkling during edge sealing. When the hot melt head presses down, the raised areas may be fully heated and pressed, while the recessed areas may not come into contact with the hot melt head, resulting in uneven edge lines and potential quality issues. In addition, wrinkled woven bags have a distorted overall shape after edge sealing, making them difficult to stack neatly and significantly affecting subsequent packaging, storage, and transportation. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an auxiliary guiding hot-melt sealing device for plastic woven bags.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an auxiliary guiding plastic woven bag hot melt sealing device, comprising two base frames, a conveyor belt mounted on the upper surface of the two base frames, a sealing platform fixedly connected to one side of the conveyor belt, a mounting frame fixedly connected to one side of the sealing platform, a stepper motor fixedly mounted on one side of the mounting frame, a lead screw fixedly connected to the output end of the stepper motor, a movable frame connected to the external thread of the lead screw, an electric cylinder fixedly mounted inside the movable frame, a hot press plate fixedly connected to the output end of the electric cylinder, and a limit component provided on the upper surface of the sealing platform;

[0006] The limiting component includes a limiting rod, which is fixedly connected to the upper surface of the locking table.

[0007] As a further description of the above technical solution:

[0008] An electric cylinder two is fixedly installed on one side of the locking platform. The output end of the electric cylinder two is fixedly connected to a fixed shell. A limit sleeve is fixedly connected to one side of the locking platform.

[0009] As a further description of the above technical solution:

[0010] The limiting sleeve is internally slidably connected to a lifting rod, which is fixedly connected to the lower surface of the fixed shell. A stepper motor is fixedly installed on one side of the fixed shell, and a bidirectional screw is fixedly connected to the output end of the stepper motor.

[0011] As a further description of the above technical solution:

[0012] The external threaded connection of the bidirectional screw has two connecting brackets. A scraper is fixedly connected to one side of each connecting bracket. The two connecting brackets are slidably connected inside the fixed housing. The screw is rotatably connected to one side of the mounting bracket, and the movable bracket is slidably connected inside the mounting bracket.

[0013] As a further description of the above technical solution:

[0014] A dual-head motor is fixedly installed on the lower surface of the conveyor belt, and threaded rods are fixedly connected to both output ends of the dual-head motor. Two support rods are fixedly connected to the lower surface of the conveyor belt.

[0015] As a further description of the above technical solution:

[0016] The support rod is slidably connected to a support sleeve, and a U-shaped frame is fixedly connected to the lower surface of the support sleeve. The U-shaped frame is threadedly connected to the outside of the threaded rod.

[0017] As a further description of the above technical solution:

[0018] One end of the U-shaped frame is fixedly connected to a mounting shell, and multiple rotating columns are rotatably connected inside the mounting shell.

[0019] This utility model has the following beneficial effects:

[0020] This invention utilizes a limiting component. A limiting rod effectively limits one side of the woven bag being conveyed by the conveyor belt, while two downward-pressing and horizontally shifting scrapers press and flatten the bag upon arrival at the overlocking table. This helps reduce wrinkles and promotes even heat and pressure distribution, resulting in a more uniform overlock width and improved overlock quality. Multiple rotating columns on both sides, aligned with the same plane, guide the bag during transport, reducing skewing. The rotatable columns also enhance the smoothness of the bag's guidance and transport, aiding in its delivery. Furthermore, the spacing between the rotating columns can be adjusted according to the bag's width, improving versatility. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model;

[0022] Figure 2 This is a schematic diagram of the mounting shell structure proposed in this utility model;

[0023] Figure 3 This is a schematic diagram of the mounting bracket structure proposed in this utility model;

[0024] Figure 4 This is a schematic diagram of the mobile frame structure proposed in this utility model;

[0025] Figure 5 This is a schematic diagram of the limiting rod structure proposed in this utility model;

[0026] Figure 6 This is a schematic diagram of the scraper structure proposed in this utility model;

[0027] Figure 7 This is a schematic diagram of the support rod structure proposed in this utility model;

[0028] Figure 8 This is a schematic diagram of the cross-sectional structure of the U-shaped frame proposed in this utility model.

[0029] Legend:

[0030] 1. Base frame; 2. Conveyor belt; 3. Sealing table; 4. Mounting frame; 5. Stepper motor; 6. Lead screw; 7. Moving frame; 8. Electric cylinder one; 9. Hot press plate; 10. Limiting rod; 11. Electric cylinder two; 12. Fixed shell; 13. Limiting sleeve; 14. Lifting rod; 15. Stepper motor; 16. Bidirectional screw; 17. Connecting frame; 18. Scraper; 19. Dual-head motor; 20. Threaded rod; 21. Support rod; 22. U-shaped frame; 23. Support sleeve; 24. Mounting shell; 25. Rotating column. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] As attached Figure 1-8 As shown, one embodiment of this utility model is provided: an auxiliary guiding plastic woven bag hot melt sealing device, including two base frames 1, a conveyor belt 2 for conveying woven bags is installed on the upper surface of the two base frames 1, a sealing platform 3 is fixedly connected to one side of the conveyor belt 2, a mounting frame 4 is fixedly connected to one side of the sealing platform 3, a stepper motor 5 is fixedly installed on one side of the mounting frame 4, a lead screw 6 is fixedly connected to the output end of the stepper motor 5, a movable frame 7 for adjusting the lateral position of the hot press plate 9 is threaded to the external of the lead screw 6, an electric cylinder 8 is fixedly installed inside the movable frame 7, a hot press plate 9 with a heating element inside is fixedly connected to the output end of the electric cylinder 8 for hot pressing the woven bag, and a limit component is provided on the upper surface of the sealing platform 3;

[0033] The limiting assembly includes a limiting rod 10 for limiting one side of the woven bag, which helps reduce the risk of the woven bag falling off the seam-locking table 3. The limiting rod 10 is fixedly connected to the upper surface of the seam-locking table 3.

[0034] As attached Figure 5 As shown, an electric cylinder 11 is fixedly installed on one side of the locking platform 3. The output end of the electric cylinder 11 is fixedly connected to a fixed housing 12. A U-shaped limiting sleeve 13 is fixedly connected to one side of the locking platform 3. A lifting rod 14 for limiting is slidably connected inside the limiting sleeve 13. The lifting rod 14 is fixedly connected to the lower surface of the fixed housing 12. A stepper motor 15 is fixedly installed on one side of the fixed housing 12. A bidirectional screw 16 with opposite external threads is fixedly connected to the output end of the stepper motor 15. Two connecting brackets 17 with matching screw holes inside the bidirectional screw 16 are connected to the external threads of the bidirectional screw 16. A scraper 18 is fixedly connected to one side of the connecting bracket 17. One side of the scraper 18 is a slope. The bottom width of the scraper 18 is smaller than the top width. The two connecting brackets 17 are slidably connected inside the fixed housing 12. The fixed housing 12 facilitates the limiting of the connecting brackets 17.

[0035] As attached Figure 2 As shown, the lead screw 6 is rotatably connected to one side of the mounting frame 4, and the movable frame 7 is slidably connected inside the mounting frame 4, so that the mounting frame 4 can be used to limit the movement of the movable frame 7.

[0036] As attached Figure 7As shown, a dual-shaft motor 19 is fixedly mounted on the lower surface of the conveyor belt 2, two output ends of the dual-shaft motor 19 are each fixedly connected with a threaded rod 20, the threaded rods 20 on both sides are arranged in opposite directions, two support rods 21 are fixedly connected to the lower surface of the conveyor belt 2, the two support rods 21 are located on both sides of the dual-shaft motor 19, a support sleeve 23 shaped like a Chinese character "hui" (closed loop) is slidably connected to the exterior of the support rod 21, the lower surface of the support sleeve 23 is fixedly connected with a U-shaped frame 22 internally provided with a threaded hole matching the threaded rod 20, the U-shaped frame 22 is threadedly connected to the exterior of the threaded rod 20, which facilitates the threaded rod 20 to push the U-shaped frame 22 to move.

[0037] As shown in the accompanying Figure 8 drawings, one end of the U-shaped frame 22 is fixedly connected with a mounting shell 24, and a plurality of rotating columns 25 for limiting and guiding both sides of the woven bag are rotatably connected inside the mounting shell 24.

[0038] Working principle: In use, place the woven bag on the conveyor belt 2, with the side to be edge-locked placed parallel to the plurality of rotating columns 25. When adjusting the spacing between the rotating columns 25 on both sides according to the width of the woven bag, an external controller is used to control and start the dual-shaft motor 19, so that its two output ends drive the threaded rods 20 on both sides to rotate. Since the threads of the threaded rods 20 on both sides are arranged in opposite directions, under the action of the threaded hole provided inside the U-shaped frame 22 that matches the threaded rod 20, the threaded rods 20 are used to push the U-shaped frames 22 on both sides to approach each other, and then the U-shaped frames 22 will drive the mounting shell 24 and the plurality of rotating columns 25 to move on the surface of the conveyor belt 2, which facilitates the reduction of the spacing between the rotating columns 25 on both sides, until the reduced spacing matches the width of the woven bag;

[0039] Then start the conveyor belt 2 to drive the woven bag to be conveyed to the surface of the edge-locking table 3. When the woven bag at this time is conveyed to the end of the conveyor belt 2, it will slide down onto the edge-locking table 3 under inertia and then be blocked in position by the limit rod 10. Then start the second electric cylinder 11, so that the output end of the second electric cylinder 11 drives the fixed shell 12 to move down, at this time the lifting rod 14 will slide inside the limit sleeve 13, and the fixed shell 12 will drive the two scraping rods 18 to move down through the connecting frame 17, so that the scraping rods 18 press the middle part of the woven bag;

[0040] Then drive the stepping motor 15, so that when its output end drives the bidirectional screw 16 to rotate, the bidirectional screw 16 will, under the action of the external threads in opposite directions, drive the two connecting frames 17 to slide in opposite directions inside the fixed shell 12, and then drive the scraping rods 18 on both sides to move away from each other, using the scraping rods 18 to flatten and tension the woven bag;

[0041] When the scraper bar 18 is on both sides of the woven bag, the stepper motor 5 is driven so that its output end drives the lead screw 6 to rotate. The lead screw 6 will drive the moving frame 7 to slide inside the mounting frame 4. The moving frame 7 will drive the hot press plate 9 to move laterally through the electric cylinder 8, so that the lateral position of the hot press plate 9 can be adjusted according to the edge position of the woven bag. After adjustment, the electric cylinder 8 is started again so that its output end drives the hot press plate 9 to press down, which facilitates the edge locking of the woven bag.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A heat-sealing device for auxiliary guidance of plastic woven bags, comprising two base frames (1), characterized in that: A conveyor belt (2) is installed on the upper surface of the two base frames (1). A locking platform (3) is fixedly connected to one side of the conveyor belt (2). A mounting frame (4) is fixedly connected to one side of the locking platform (3). A stepper motor (5) is fixedly installed on one side of the mounting frame (4). A lead screw (6) is fixedly connected to the output end of the stepper motor (5). A moving frame (7) is connected to the external thread of the lead screw (6). An electric cylinder (8) is fixedly installed inside the moving frame (7). A hot press plate (9) is fixedly connected to the output end of the electric cylinder (8). A limit component is provided on the upper surface of the locking platform (3). The limiting component includes a limiting rod (10), which is fixedly connected to the upper surface of the locking table (3).

2. The auxiliary guiding plastic woven bag hot melt sealing device according to claim 1, characterized in that: An electric cylinder (11) is fixedly installed on one side of the locking platform (3), and a fixed shell (12) is fixedly connected to the output end of the electric cylinder (11). A limit sleeve (13) is fixedly connected to one side of the locking platform (3).

3. The auxiliary guiding plastic woven bag hot melt sealing device according to claim 2, characterized in that: The limiting sleeve (13) is slidably connected to a lifting rod (14), which is fixedly connected to the lower surface of the fixed shell (12). A stepper motor (15) is fixedly installed on one side of the fixed shell (12), and a bidirectional screw (16) is fixedly connected to the output end of the stepper motor (15).

4. The auxiliary guiding plastic woven bag hot melt sealing device according to claim 3, characterized in that: The external thread of the bidirectional screw (16) has two connecting brackets (17), and a scraper (18) is fixedly connected to one side of the connecting bracket (17). The two connecting brackets (17) are slidably connected inside the fixed shell (12). The screw (6) is rotatably connected to one side of the mounting bracket (4), and the movable bracket (7) is slidably connected inside the mounting bracket (4).

5. The auxiliary guiding plastic woven bag hot melt sealing device according to claim 1, characterized in that: A dual-head motor (19) is fixedly installed on the lower surface of the conveyor belt (2). Both output ends of the dual-head motor (19) are fixedly connected to threaded rods (20). Two support rods (21) are fixedly connected to the lower surface of the conveyor belt (2).

6. The auxiliary guiding plastic woven bag hot melt sealing device according to claim 5, characterized in that: The support rod (21) is slidably connected to a support sleeve (23), and a U-shaped frame (22) is fixedly connected to the lower surface of the support sleeve (23). The U-shaped frame (22) is threadedly connected to the outside of the threaded rod (20).

7. The auxiliary guiding plastic woven bag hot melt sealing device according to claim 6, characterized in that: One end of the U-shaped frame (22) is fixedly connected to a mounting shell (24), and multiple rotating columns (25) are rotatably connected inside the mounting shell (24).

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