Hot melting sealing device for packaging bag

Abstract

The utility model relates to the technical field of packaging sealing, in particular to a hot melting sealing device for packaging bags, which comprises a conveying belt, side plates are arranged on two sides of the conveying belt, and a positioning wheel, a height sensor, a primary conveying wheel, a heating wheel and a shaping conveying wheel are sequentially arranged in the conveying direction of the side plates. The positioning wheel is fixedly connected with the side plate through a width adjuster, the primary conveying wheel, the heating wheel and the shaping conveying wheel penetrate through a limiting groove in the side plate through a support and are fixedly installed on the limiting plate through bolts, a bearing platform is arranged in the middle of an upper opening of the side plate, and an air cylinder is fixedly installed on the upper surface of the bearing platform; a telescopic rod is arranged at the output end of the air cylinder. The packaging bag sealing device is scientific and simple in structure, capable of adapting to packaging bags of various specifications, accurate in positioning during sealing operation, capable of achieving accurate sealing, attractive in packaging bag sealing, capable of reducing the rework rate and capable of improving the product packaging efficiency.

Description

Technical Field

[0001] This utility model relates to the field of packaging sealing technology, specifically to a heat-sealing device for packaging bags. Background Technology

[0002] Heat-sealing technology for packaging bags is a commonly used sealing method widely applied in the food, pharmaceutical, and daily necessities industries. This technology heats specific areas of the packaging material to their melting point, achieving a quick and secure seal. Good sealing technology not only ensures product safety and hygiene but also extends shelf life, improves packaging efficiency, and reduces production costs.

[0003] Currently, the hot-melt sealing devices used for packaging bags have complex structures, high requirements for packaging bag size, and cannot adapt to sealing of various specifications. When dealing with sealing operations of packaging bags of different specifications, the sealing cost increases, and precise positioning cannot be achieved during the sealing operation. Defects are prone to occur in the sealing of packaging bags, resulting in high rework and material consumption rates, which reduces the efficiency of product packaging. Utility Model Content

[0004] To solve the above-mentioned technical problems, a heat-sealing device for packaging bags is provided. This technical solution solves the problems mentioned in the background art, such as the inability to adapt to various sizes of packaging bags, the inability to achieve precise sealing positioning, and the low sealing efficiency.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A heat-sealing device for packaging bags includes a conveyor belt with side plates on both sides. Positioning wheels, a height sensor, a primary conveyor wheel, a heating wheel, and a shaping conveyor wheel are sequentially arranged on the side plates in the conveying direction. The positioning wheels are fixedly connected to the side plates via width adjusters. The primary conveyor wheel, heating wheel, and shaping conveyor wheel are all fixedly mounted to the limiting plates via brackets passing through limiting grooves in the side plates and bolted on. A support platform is provided at the center of the upper opening of the side plates. A cylinder is fixedly mounted on the upper surface of the support platform. A telescopic rod is provided at the output end of the cylinder. A connecting frame is fixedly connected to the other end of the telescopic rod away from the cylinder, and the connecting frame is fixedly connected to the limiting plate.

[0007] Preferably, there are two positioning wheels, two primary conveying wheels, two heating wheels, and two shaping conveying wheels, which are symmetrically arranged along the central axis of the conveyor belt and rotate in opposite directions.

[0008] Preferably, the connecting frame is U-shaped, with both ends of the U-shape fixedly connected to two limiting plates, and the primary conveying wheel, heating wheel, and shaping conveying wheel are set at the same height through the limiting plates.

[0009] Preferably, the height of the primary conveyor wheel, the heating wheel, and the shaping conveyor wheel relative to the conveyor belt surface is adjustable, and they slide in the limiting grooves of the side plates.

[0010] Preferably, the heating wheel is covered with a heating plate on its side, and the heating plate is electrically connected to an external power source.

[0011] Compared with the prior art, the present invention provides a heat-sealing device for packaging bags, which has the following advantages:

[0012] This invention uses positioning wheels and a width adjuster to change the distance between the two positioning wheels to adapt to the positioning needs of packaging bags of different sizes. After the packaging bag is placed on the conveyor belt, the positioning wheels initially align the packaging bag to be sealed with the primary conveyor wheel to ensure accurate sealing position.

[0013] This invention utilizes a height sensor and a limiting plate. When the packaging bag to be sealed is conveyed to the height sensor, the sensor detects the height of the bag and adjusts the extension length of the telescopic rod on the cylinder to drive the primary conveyor wheel, heating wheel, and shaping conveyor wheel to slide up and down. This adapts to the sealing needs of packaging bags of different sizes, reducing the sealing cost of multi-specification packaging. Attached Figure Description

[0014] Figure 1 This is an overall structural diagram of the present invention;

[0015] Figure 2 This is a side view of the present invention;

[0016] Figure 3 This is a front view of the present invention;

[0017] Figure 4 This is a top view of the present invention;

[0018] The numbers on the map are:

[0019] 1. Side plate; 2. Positioning wheel; 3. Primary conveyor wheel; 4. Heating wheel; 5. Shaping conveyor wheel; 6. Support platform; 7. Cylinder; 8. Telescopic rod; 9. Connecting frame; 10. Limiting plate; 11. Height sensor; 12. Width adjuster; 13. Conveyor belt; 14. Support frame; 15. Heating plate; 16. Motor. Detailed Implementation

[0020] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0021] Reference Figure 1-4As shown, a heat-sealing device for packaging bags includes a conveyor belt 13. Side plates 1 are arranged on both sides of the conveyor belt 13. Positioning wheels 2, height sensors 11, primary conveyor wheels 3, heating wheels 4, and shaping conveyor wheels 5 are sequentially arranged on the side plates 1 along the conveying direction. There are two positioning wheels 2, two primary conveyor wheels 3, two heating wheels 4, and two shaping conveyor wheels 5, symmetrically arranged along the central axis of the conveyor belt 13 and rotating in opposite directions. The positioning wheels 2 are fixedly connected to the side plates 1 via width adjusters 12. When a worker places a packaging bag to be sealed on the conveyor belt 13, the width adjuster 12 changes the distance between the two positioning wheels 2 to accommodate the positioning requirements of packaging bags of different sizes. As the conveying progresses, the positioning wheels 2 initially align the packaging bag to be sealed with the primary conveyor wheel 3, ensuring accurate subsequent sealing.

[0022] A support platform 6 is located at the center of the upper opening of the side plate 1. A cylinder 7 is fixedly installed on the upper surface of the support platform 6. A telescopic rod 8 is provided at the output end of the cylinder 7. A connecting frame 9 is fixedly connected to the other end of the telescopic rod 8 away from the cylinder 7. The connecting frame 9 is U-shaped, and the two ends of the U-shape are fixedly connected to two limiting plates 10. The primary conveying wheel 3, the heating wheel 4, and the shaping conveying wheel 5 are set at the same height through the limiting plates 10. The height of the primary conveying wheel 3, the heating wheel 4, and the shaping conveying wheel 5 relative to the conveying surface of the conveyor belt 13 is adjustable, and they slide in the limiting groove of the side plate 1. When the packaging bag to be sealed is conveyed to the height sensor 11, the height sensor 11 detects the height of the packaging bag to be sealed and drives the primary conveying wheel 3, the heating wheel 4, and the shaping conveying wheel 5 to slide up and down by adjusting the extension length of the telescopic rod 8 on the cylinder 7, so that the primary conveying wheel 3, the heating wheel 4, and the shaping conveying wheel 5 are at the same height as the packaging bag to be sealed, so as to adapt to the sealing operation requirements of packaging bags of different sizes and reduce the sealing cost of multi-specification packaging.

[0023] The primary conveyor wheel 3, heating wheel 4, and shaping conveyor wheel 5 are all installed on the limiting plate 10 by bolts through the limiting groove on the side plate 1 via the bracket 14. The side of the heating wheel 4 is covered with a heating plate 15, which is electrically connected to an external power source. The primary conveyor wheel 3, heating wheel 4, and shaping conveyor wheel 5 are all driven by a motor 16, which is located on the upper surface of the bracket 14 and rotates at the same speed as the conveyor belt 13. After the packaging bag is further precisely positioned by the primary conveyor wheel 3, it enters the heating wheel 4. The adhesive strip on the inside of the packaging bag is heated, and then, under the squeezing action of the shaping conveyor wheel 5, the softened adhesive strip sticks the packaging bag together. To make the seal aesthetically pleasing, the melting point of the adhesive strip is lower than that of the packaging bag, and then the sealing operation of the packaging bag is completed.

[0024] Working principle: When using this utility model, the worker places the packaging bag to be sealed on the conveyor belt 13. According to the actual width of the packaging bag, the distance between the two positioning wheels 2 is changed by the width adjuster 12. As the conveying proceeds, the positioning wheels 2 initially align the packaging bag to be sealed with the primary conveyor wheel 3. When the packaging bag to be sealed is conveyed to the height sensor 11, the height sensor 11 detects the height of the packaging bag to be sealed and drives the primary conveyor wheel 3, heating wheel 4, and shaping conveyor wheel 5 to slide up and down by adjusting the extension length of the telescopic rod 8 on the cylinder 7, so that the primary conveyor wheel 3, heating wheel 4, and shaping conveyor wheel 5 are at the same height as the packaging bag to be sealed. After the packaging bag is further precisely positioned by the primary conveyor wheel 3, it enters the heating wheel 4. The adhesive strip on the inside of the packaging bag seal is heated. Then, under the squeezing action of the shaping conveyor wheel 5, the softened adhesive strip sticks the packaging bag seal together. In order to make the seal beautiful, the melting point of the adhesive strip is lower than the melting point of the packaging bag. Then the sealing operation of the packaging bag is completed.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A heat-sealing device for packaging bags, characterized in that, The system includes a conveyor belt (13), with side plates (1) on both sides. The side plates (1) are arranged in sequence along the conveying direction with a positioning wheel (2), a height sensor (11), a primary conveyor wheel (3), a heating wheel (4), and a shaping conveyor wheel (5). The positioning wheel (2) is fixedly connected to the side plate (1) via a width adjuster (12). The primary conveyor wheel (3), the heating wheel (4), and the shaping conveyor wheel (5) are all fixedly installed on the limiting plate (10) by bolts through the limiting groove on the side plate (1) via a bracket (14). A support platform (6) is provided at the middle of the upper opening of the side plate (1). A cylinder (7) is fixedly installed on the upper surface of the support platform (6). A telescopic rod (8) is provided at the output end of the cylinder (7). A connecting frame (9) is fixedly connected to the other end of the telescopic rod (8) away from the cylinder (7). The connecting frame (9) is fixedly connected to the limiting plate (10).

2. The heat-sealing device for packaging bags according to claim 1, characterized in that: The positioning wheel (2), primary conveyor wheel (3), heating wheel (4) and shaping conveyor wheel (5) are all in pairs and are arranged symmetrically along the central axis of the conveyor belt (13) in the direction of transmission, and rotate in opposite directions.

3. The heat-sealing device for packaging bags according to claim 1, characterized in that: The connecting frame (9) is U-shaped, and the two ends of the U-shape are fixedly connected to two limiting plates (10). The primary conveying wheel (3), heating wheel (4) and shaping conveying wheel (5) are set at the same height through the limiting plates (10).

4. A heat-sealing device for packaging bags according to claim 3, characterized in that: The height of the primary conveyor wheel (3), heating wheel (4) and shaping conveyor wheel (5) relative to the conveying surface of the conveyor belt (13) is adjustable, and they slide in the limiting groove of the side plate (1).

5. A heat-sealing device for packaging bags according to claim 1, characterized in that: The heating wheel (4) is covered with a heating plate (15) on its side, and the heating plate (15) is electrically connected to an external power source.

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