A bag opening mechanism of a zipper bag packaging machine

Abstract

The utility model discloses a zip fastener bag packaging machine's mechanism of opening bag, including roof, both sides of roof bottom are all fixedly installed with side plate, one side of side plate is connected with square bar through setting opening sliding, one end of square bar is fixedly installed with the piece of close contact, and the utility model discloses the motor is started after packaging bag moves to the below of roof, and motor starts driving screw rod rotation, and screw rod rotation drives screw cylinder to remove, and screw cylinder removes and drives two -way meshing board to remove, and two -way meshing board removes and rotates through engaging first gear, and first gear rotation drives slide rod rotation, and slide rod rotation drives strip type frame to move back and forth once to left and right, and strip type frame removes and drives pull rod to remove, and pull rod removes and drives square bar to remove, and square bar removes and drives two pieces of close contact to remove to the middle simultaneously, and the piece of close contact removes can open bag body, reaches the effect that opens bag efficiently.

Description

Technical Field

[0001] This utility model relates to the field of zipper bag packaging machines, specifically to a bag opening mechanism for a zipper bag packaging machine. Background Technology

[0002] In the modern packaging industry, zipper bags are widely used in many fields such as food, daily necessities, and electronic products due to their advantages such as good sealing and reusability. As a key piece of equipment for automated zipper bag packaging, the performance of the zipper bag packaging machine's opening mechanism directly affects packaging efficiency and quality. Currently, most zipper bag packaging machines on the market use traditional mechanical clamping or pneumatic suction methods for opening bags. These methods have limitations. On one hand, the opening process is cumbersome and inefficient, making it difficult to meet the needs of large-scale production. On the other hand, they cannot ensure the bag cavity is fully opened, easily leading to partial adhesion at the bag opening or insufficient expansion of the bag cavity. This makes subsequent material filling difficult and may even cause material spillage or poor packaging, affecting product quality and production efficiency. Therefore, it is necessary to design a new opening mechanism for zipper bag packaging machines to solve these problems. Utility Model Content

[0003] The purpose of this utility model is to provide an opening mechanism for a zipper bag packaging machine to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a bag opening mechanism for a zipper bag packaging machine, including a top plate, side plates fixedly installed on both sides of the bottom of the top plate, a square rod slidably connected to one side of the side plate through an opening, and a bonding piece fixedly installed at one end of the square rod; Both sides of the top of the top plate are rotatably connected to a first gear via bearing components. A slide rod is fixedly installed on the top of the first gear. A strip frame is slidably connected to the surface of the slide rod. A traction rod is fixedly installed on one side of the strip frame. One end of the traction rod is fixedly connected to one side of the square rod.

[0005] Preferably, a motor is fixedly installed on the top of the top plate, and a threaded rod is fixedly installed on the output shaft of the motor through a coupling. A threaded cylinder is threadedly connected to the surface of the threaded rod, and a bidirectional meshing plate that meshes with the first gear is fixedly installed on the surface of the threaded cylinder. A sliding groove is provided on the top of the top plate, and a slider is slidably connected inside the sliding groove. The top of the slider is fixedly installed on the bottom of the bidirectional meshing plate.

[0006] Preferably, the bottom of the bidirectional meshing plate is rotatably connected to an electric telescopic rod via a bearing, and a bag-opening piece is fixedly installed at the bottom end of the electric telescopic rod.

[0007] Preferably, the top of the top plate has an opening for use with an electric telescopic rod.

[0008] Preferably, a second gear is fixedly mounted on the surface of the electric telescopic rod.

[0009] Preferably, a meshing plate that meshes with the second gear is fixedly installed on the top of the top plate.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. The bag opening mechanism of this zipper bag packaging machine starts the motor after the packaging bag moves to below the top plate. The motor starts and drives the threaded rod to rotate, which in turn drives the threaded cylinder to move. The movement of the threaded cylinder drives the bidirectional meshing plate to move. The movement of the bidirectional meshing plate drives the first gear to rotate, which in turn drives the slide rod to rotate. The rotation of the slide rod drives the strip frame to move back and forth once. The movement of the strip frame drives the traction rod to move, which in turn drives the square rod to move. The movement of the square rod drives the two bonding pieces to move towards the middle at the same time. The movement of the bonding pieces can open the bag body, achieving an efficient bag opening effect.

[0011] 2. The bag opening mechanism of this zipper bag packaging machine extends an electric telescopic rod after the packaging bag moves below the top plate. The extension of the electric telescopic rod drives the bag opening plate to descend, allowing it to reach into the bag. Then, the motor is started, which drives the bidirectional meshing plate to move. The movement of the bidirectional meshing plate drives the electric telescopic rod to move, which in turn drives the bag opening plate and the second gear to move. The movement of the second gear, through meshing with the meshing plate, causes the bag opening plate to rotate during movement, thereby achieving the effect of completely opening the inside of the bag. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side view of the internal structure of the top plate and the threaded cylinder of this utility model; Figure 3 This is a schematic diagram of the slide groove, slider, and meshing plate of this utility model; Figure 4 This is a schematic diagram of the electric telescopic rod, the bag opening plate, and the second gear structure of this utility model.

[0013] In the diagram: 1. Top plate; 2. Side plate; 3. Adhesive piece; 4. First gear; 5. Slide rod; 6. Strip frame; 7. Traction rod; 8. Motor; 9. Threaded rod; 10. Threaded cylinder; 11. Two-way meshing plate; 12. Slide groove; 13. Slider; 14. Electric telescopic rod; 15. Bag opening piece; 16. Movable opening; 17. Second gear; 18. Meshing plate; 19. Square rod. Detailed Implementation

[0014] 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.

[0015] Example 1 Please refer to Figures 1-4 As shown, this utility model provides a bag opening mechanism for a zipper bag packaging machine, including a top plate 1. The top plate 1 serves as the basic load-bearing component of the entire mechanism and is made of high-strength aluminum alloy. This material not only has good mechanical strength and can withstand various forces during the operation of the mechanism, but also has the characteristics of being lightweight and corrosion-resistant, which can effectively extend the service life of the equipment. Side plates 2 are fixedly installed on both sides of the bottom of the top plate 1. The side plates 2 are made of the same aluminum alloy as the top plate 1 and are tightly connected to the top plate 1 by high-strength bolts to ensure the stability of the entire frame structure. A square rod 19 is slidably connected to one side of the side plate 2 through an opening. In order to ensure the smoothness and accuracy of the sliding of the square rod 19, a high-precision linear guide rail is set inside the opening. The square rod 19 and the linear guide rail adopt a clearance fit, which can ensure flexible sliding and prevent shaking. A bonding piece 3 is fixedly installed at one end of the square rod 19. The bonding piece 3 is made of flexible silicone material, and its surface has been specially treated to have appropriate friction. During the bag opening process, it can fit tightly with the surface of the zipper bag without damaging the bag.

[0016] Specifically, the top of the top plate 1 has a first gear 4 rotatably connected to both sides of the top via bearing components. High-precision deep groove ball bearings are used to effectively reduce frictional resistance during the rotation of the first gear 4, improving rotational accuracy and stability. A slide rod 5 is fixedly installed on the top of the first gear 4. The slide rod 5 is made of stainless steel and its surface is finely ground to ensure smooth sliding of the strip frame 6. The strip frame 6 is slidably connected to the surface of the slide rod 5. A traction rod 7 is fixedly installed on one side of the strip frame 6. One end of the traction rod 7 is fixedly connected to one side of the square rod 19. To ensure the stability of the power transmission of the traction rod 7, it adopts a solid structure, and the connections with the strip frame 6 and the square rod 19 are all reinforced with... The motor 8, a servo motor, is fixedly mounted on the top of the top plate 1 via welding. This servo motor features high precision, high response speed, and high torque, enabling precise control of rotation angle and speed according to the control system's commands. A threaded rod 9 is fixedly mounted on the output shaft of the motor 8 via a coupling. A flexible coupling is used to effectively compensate for coaxiality errors between the motor output shaft and the threaded rod 9, reducing vibration and noise. A threaded cylinder 10 is threadedly connected to the surface of the threaded rod 9 to ensure the accuracy and stability of the transmission. A bidirectional meshing plate 11, which meshes with the first gear 4, is fixedly mounted on the surface of the threaded cylinder 10. The bidirectional meshing plate 11 is made of high-strength engineering plastic, which is lightweight and durable. The top plate 1 has a groove 12 on its top, and a slider 13 is slidably connected inside the groove 12. The slider 13 and the groove 12 adopt a dovetail joint structure, which has good guiding and load-bearing capacity. The top of the slider 13 is fixedly installed on the bottom of the bidirectional meshing plate 11. A motor 8 is installed, and after the packaging bag moves to the bottom of the top plate 1, a photoelectric sensor installed on the packaging machine conveyor line detects the packaging bag's arrival signal. This signal is transmitted to the control system, which then issues a command to start the motor 8. The motor 8 drives the threaded rod 9 to rotate, and the rotation of the threaded rod 9 drives the threaded cylinder 10 to move along the axial direction of the threaded rod 9. The movement of the threaded cylinder 10 drives the bidirectional meshing plate 11. 1. Guided by the slider 13, the top plate 1 moves linearly. The bidirectional meshing plate 11 moves and rotates through the meshing of the first gear 4. The rotation of the first gear 4 drives the slide rod 5 to rotate. The rotation of the slide rod 5 drives the strip frame 6 to move back and forth once. The movement of the strip frame 6 drives the traction rod 7 to move. The movement of the traction rod 7 drives the square rod 19 to move. The movement of the square rod 19 drives the two bonding pieces 3 to move towards the middle at the same time. The movement of the bonding pieces 3 can open the bag body, achieving an efficient bag opening effect. In this process, the number of rotations and speed of the threaded rod 9 are precisely controlled by the servo motor, which can accurately control the moving distance and speed of the bonding pieces 3, ensuring that the best bag opening effect can be achieved when opening zipper bags of different specifications.

[0017] Specifically, the bottom of the bidirectional meshing plate 11 is rotatably connected to an electric telescopic rod 14 via bearing components. These bearing components are also high-precision deep groove ball bearings to ensure the electric telescopic rod 14 can rotate freely during movement. A bag-opening plate 15 is fixedly installed at the bottom of the electric telescopic rod 14. The bag-opening plate 15 is made of high-strength stainless steel and is tapered in shape with a specially chamfered tip for easy insertion into a zippered bag without scratching the bag. The top of the top plate 1 has a movable opening 16 that cooperates with the electric telescopic rod 14. The size of the movable opening 16 is slightly larger than the outer diameter of the electric telescopic rod 14, ensuring smooth passage and providing some dust protection. A second gear 17 is fixedly installed on the surface of the electric telescopic rod 14, and a meshing plate 18 that meshes with the second gear 17 is fixedly installed on the top of the top plate 1. The meshing plate 18 is made of the same high-strength engineering plastic as the bidirectional meshing plate 11. By setting the electric telescopic rod 14... 4. After the packaging bag moves to below the top plate 1, the control system synchronously detects the packaging bag's arrival signal with the aforementioned photoelectric sensor. The control system then issues a command to extend the electric telescopic rod 14. The extension of the electric telescopic rod 14 causes the bag opening piece 15 to descend. The descending bag opening piece 15 can extend into the bag. Then, the motor 8 is started, which drives the bidirectional meshing plate 11 to move. The movement of the bidirectional meshing plate 11 drives the electric telescopic rod 14 to move. The movement of the electric telescopic rod 14 drives the bag opening piece 15 and the second gear 17 to move. The movement of the second gear 17, through meshing with the meshing plate 18, causes the bag opening piece 15 to rotate during movement, thereby achieving the effect of completely opening the inside of the bag. In terms of the extension and retraction control of the electric telescopic rod 14, a closed-loop control system is adopted. The extension length of the telescopic rod is monitored in real time by the built-in displacement sensor and fed back to the control system to ensure that the bag opening piece 15 can accurately extend into the zipper bag to the appropriate depth, avoiding the situation where it extends too deep and damages the bag or extends too shallow and cannot effectively open the bag.

[0018] Working Principle: This utility model is a bag opening mechanism for a zipper bag packaging machine. After the packaging bag moves below the top plate 1, the electric telescopic rod 14 is extended. The extension of the electric telescopic rod 14 drives the bag opening plate 15 to descend, allowing it to extend into the bag. Then, the motor 8 is started, which drives the threaded rod 9 to rotate. The rotation of the threaded rod 9 drives the threaded cylinder 10 to move, which in turn drives the bidirectional meshing plate 11 to move. The bidirectional meshing plate 11 rotates through meshing with the first gear 4, which in turn drives the slide rod 5 to rotate. The rotation of the slide rod 5 drives the... The strip frame 6 moves back and forth once, which drives the traction rod 7 to move. The traction rod 7 then drives the square rod 19 to move. The square rod 19 then drives the two bonding pieces 3 to move towards the center simultaneously. The movement of the bonding pieces 3 can open the bag body, achieving an efficient bag opening effect. At the same time, the movement of the bidirectional meshing plate 11 drives the electric telescopic rod 14 to move. The movement of the electric telescopic rod 14 drives the bag opening piece 15 and the second gear 17 to move. The movement of the second gear 17, through meshing with the meshing plate 18, causes the bag opening piece 15 to rotate during movement, thereby achieving the effect of completely opening the inside of the bag body.

[0019] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0020] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A bag opening mechanism for a zipper bag packaging machine, comprising a top plate (1), characterized in that: Side plates (2) are fixedly installed on both sides of the bottom of the top plate (1). A square rod (19) is slidably connected to one side of the side plate (2) through an opening. A fitting piece (3) is fixedly installed at one end of the square rod (19). The top of the top plate (1) is rotatably connected to the first gear (4) on both sides of the top through bearing components. The top of the first gear (4) is fixedly installed with a slide rod (5). The surface of the slide rod (5) is slidably connected with a strip frame (6). A traction rod (7) is fixedly installed on one side of the strip frame (6). One end of the traction rod (7) is fixedly connected to one side of the square rod (19). A motor (8) is fixedly installed on the top of the top plate (1). A threaded rod (9) is fixedly installed on the output shaft of the motor (8) through a coupling. A threaded cylinder (10) is threadedly connected to the surface of the threaded rod (9). A bidirectional meshing plate (11) that meshes with the first gear (4) is fixedly installed on the surface of the threaded cylinder (10). A sliding groove (12) is provided on the top of the top plate (1). A slider (13) is slidably connected inside the sliding groove (12). The top of the slider (13) is fixedly installed on the bottom of the bidirectional meshing plate (11).

2. The bag opening mechanism of a zipper bag packaging machine according to claim 1, characterized in that: The bottom of the bidirectional meshing plate (11) is rotatably connected to an electric telescopic rod (14) via a bearing component, and a bag opening piece (15) is fixedly installed at the bottom end of the electric telescopic rod (14).

3. The bag opening mechanism of a zipper bag packaging machine according to claim 2, characterized in that: The top of the top plate (1) is provided with an opening (16) for use with the electric telescopic rod (14).

4. The bag opening mechanism of a zipper bag packaging machine according to claim 2, characterized in that: A second gear (17) is fixedly installed on the surface of the electric telescopic rod (14).

5. The bag opening mechanism of a zipper bag packaging machine according to claim 4, characterized in that: The top of the top plate (1) is fixedly installed with a meshing plate (18) that meshes with the second gear (17).

Images