A device for hot-press sealing of plastic packaging bags

Abstract

The utility model discloses a kind of hot-pressing sealing devices for plastic packaging bag, including base, the four corners of base upper end are respectively provided with fixed rod, the upper end of four fixed rods is fixedly connected with the lower end of connecting seat, the lower end of connecting seat is equipped with electric heating wire, the middle part of base upper end is provided with placing table, further including flattening mechanism;Flattening mechanism: it includes pressing plate, drive assembly, avoidance groove and electric push rod one, the left and right sides of electric push rod one are respectively arranged in the lower end of connecting seat, the lower end of the telescopic end of two electric push rod one is fixedly connected with the upper end of pressing plate, the middle part of pressing plate upper end is provided with avoidance groove, drive assembly is arranged in the inside of base, the hot-pressing sealing device for plastic packaging bag can flatten the sealing area of plastic packaging bag, improve the uniformity of sealing work, without affecting the appearance quality of plastic packaging bag, ensure the sealing effect of sealing.

Description

Technical Field

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

[0002] Plastic packaging bags are a widely used packaging material due to their lightweight, low cost, ease of processing, and good sealing properties. A plastic packaging bag heat-sealing device is a device used to seal the opening of a plastic packaging bag through heat sealing. This device seals the opening of the plastic packaging bag by heating and pressurizing, ensuring the airtightness and integrity of the packaging. In the prior art: Authorization Publication No. CN 214493583 U's patent discloses an equidistant heat-sealing device for biodegradable plastic packaging bags, including a conveyor belt for conveying, a heat-sealing component for sealing the plastic bags, a worktable, and support rods fixedly connected to multiple sets at the lower end of the worktable for supporting the worktable; wherein the conveyor belt is connected between the multiple sets of support rods; and a cooling water tank fixedly connected to the upper end of the worktable. Although this device can quickly cool the sealed plastic packaging bags, it does not flatten the sealing area of ​​the plastic packaging bags before sealing. If the sealing area of ​​the plastic packaging bags is not flattened, wrinkles or unevenness will appear, resulting in an insecure seal and affecting the airtightness of the packaging. Unflattened plastic packaging bags will also have wrinkles or unevenness in the sealing area after sealing, affecting the appearance quality of the plastic packaging bags. Therefore, we propose a heat-sealing device for plastic packaging bags. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a heat-sealing device for plastic packaging bags. Through the cooperation of trapezoidal blocks and push plates, the scraper can be moved to flatten the sealing area of ​​the plastic packaging bag, thereby improving the uniformity of the sealing work and not affecting the appearance quality of the plastic packaging bag. It solves the problem of weak sealing caused by wrinkles in the sealing area of ​​the plastic packaging bag, and ensures the sealing effect. It can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a heat-sealing device for plastic packaging bags, including a base, four fixed rods respectively provided at the four corners of the upper end of the base, the upper ends of the four fixed rods being fixedly connected to the lower end of the connecting seat, the lower end of the connecting seat being provided with an electric heating wire, a placement platform being provided in the middle of the upper end of the base, and also including a flattening mechanism.

[0005] The flattening mechanism includes a pressure plate, a drive assembly, a clearance groove, and two electric push rods. The electric push rods are respectively located on the left and right sides of the lower end of the connecting base. The lower ends of the telescopic ends of the two electric push rods are fixedly connected to the upper end of the pressure plate. A clearance groove is provided in the middle of the upper end of the pressure plate. The drive assembly is located inside the base. Through the cooperation of the trapezoidal block and the push plate, it can drive the scraper to move, thereby flattening the sealing area of ​​the plastic packaging bag, improving the uniformity of the sealing work, and not affecting the appearance quality of the plastic packaging bag. It solves the problem of weak sealing caused by wrinkles in the sealing area of ​​the plastic packaging bag, and ensures the sealing effect.

[0006] Furthermore, a control switch group is provided at the front end of the connector. The input end of the control switch group is electrically connected to an external power source, and the input ends of the electric heating wire and the electric push rod are both electrically connected to the output end of the control switch group, which can regulate the electrical components inside the equipment.

[0007] Furthermore, the leveling mechanism also includes fixed plates, mounting rods, scrapers, and springs. The fixed plates are respectively disposed on the left and right sides of the lower end of the pressure plate. Mounting rods are slidably connected in the sliding holes opened in the middle of the four fixed plates. The ends of two horizontally adjacent mounting rods near the center of the base are fixedly connected to the outer surface of a scraper. Baffles are provided at the ends of the four mounting rods away from the center of the base. Springs are respectively disposed between the ends of the fixed plates near the center of the base and the ends of the scrapers away from the center of the base. The springs are movably sleeved with the corresponding longitudinal mounting rods. The scraper and the drive assembly are installed together to level the sealed area of ​​the plastic packaging bag.

[0008] Furthermore, the driving assembly includes an adjusting plate, a trapezoidal block, and a push plate. The adjusting plate is slidably connected to a groove on the right side of the upper end of the base. A trapezoidal block is provided at the upper end of the adjusting plate. Push plates are provided on the right sides of the front and rear ends of the scraper, respectively. The right ends of the two push plates are in contact with the inclined surface of the left end of the trapezoidal block, which can drive the scraper to move.

[0009] Furthermore, the drive assembly also includes a screw and a bellows. The screw is rotatably connected to the middle of the right wall of the base. The adjusting plate is threaded to the right side of the outer arc surface of the screw through a threaded hole at the middle of its right end. Bellows are provided at the left and right ends of the adjusting plate, and the right end of the bellows is fixedly connected to the right wall of the base. The bellows are respectively sleeved on the outside of the left and right sides of the screw, and can drive the trapezoidal block to move through the adjusting plate.

[0010] Furthermore, a motor is installed in the middle of the left wall of the base. The right end of the motor output shaft is fixedly connected to the left end of the screw. The left end of the bellows on the left side is fixedly connected to the right end of the motor. The input end of the motor is electrically connected to the output end of the control switch group, which can drive the adjustment plate to move through the screw.

[0011] Furthermore, an electric push rod two is provided in the middle of the lower end of the connecting seat, a heat insulation plate is provided at the lower end of the telescopic end of the electric push rod two, a heat conduction plate is provided in the middle of the lower end of the heat insulation plate, and electric heating wires are respectively provided on the lower side inside the heat conduction plate. The upper and lower positions of the heat conduction plate and the clearance groove correspond. The input end of the electric push rod two is electrically connected to the output end of the control switch group, which can drive the heat conduction plate to move.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This heat-sealing device for plastic packaging bags has the following advantages:

[0013] The trapezoidal block and push plate work together to move the scraper, which flattens the sealing area of ​​the plastic bag, improving the uniformity of the sealing process. This does not affect the appearance quality of the plastic bag and solves the problem of loose sealing caused by wrinkles in the sealing area of ​​the plastic bag, thus ensuring the sealing effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the upper sectional structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the flattening mechanism of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the drive component of this utility model;

[0018] Figure 5 This is an enlarged structural diagram of point A in this utility model.

[0019] In the diagram: 1. Base, 2. Fixing rod, 3. Connecting seat, 4. Heat insulation plate, 5. Heat conducting plate, 6. Electric heating wire, 7. Placement platform, 8. Electric push rod II, 9. Leveling mechanism, 91. Pressure plate, 92. Fixing plate, 93. Mounting rod, 94. Scraper, 95. Drive assembly, 951. Adjustment plate, 952. Trapezoidal block, 953. Push plate, 954. Screw, 955. Corrugated pipe, 96. Spring, 97. Clearance groove, 98. Electric push rod I, 10. Motor, 11. Control switch group. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-5 This embodiment provides a technical solution: a heat sealing device for plastic packaging bags, including a base 1, with fixing rods 2 respectively provided at the four corners of the upper end of the base 1, the upper ends of the four fixing rods 2 being fixedly connected to the lower end of the connecting seat 3, the lower end of the connecting seat 3 being provided with an electric heating wire 6, a placement platform 7 being provided in the middle of the upper end of the base 1, and also including a flattening mechanism 9.

[0022] The leveling mechanism 9 includes a pressure plate 91, a drive assembly 95, a clearance groove 97, and electric push rods 98. The electric push rods 98 are respectively located on the left and right sides of the lower end of the connecting seat 3. The lower ends of the telescopic ends of the two electric push rods 98 are fixedly connected to the upper end of the pressure plate 91. A clearance groove 97 is provided in the middle of the upper end of the pressure plate 91. The drive assembly 95 is located inside the base 1. The leveling mechanism 9 also includes a fixing plate 92, mounting rods 93, a scraper 94, and a spring 96. The fixing plates 92 are respectively located on the left and right sides of the lower end of the pressure plate 91. Mounting rods 93 are slidably connected to the sliding holes opened in the middle of the four fixing plates 92. The ends of two horizontally adjacent mounting rods 93 near the center of the interior of the base 1 are connected to a... The outer surface of the scraper 94 is fixedly connected. Each of the four mounting rods 93 has a baffle at one end away from the center of the base 1. Springs 96 are respectively located between the end of the fixed plate 92 near the center of the base 1 and the end of the scraper 94 away from the center of the base 1. The springs 96 are movably sleeved with the corresponding longitudinal mounting rods 93. The scraper 94 and the drive assembly 95 are fitted together. The drive assembly 95 includes an adjusting plate 951, a trapezoidal block 952, and a push plate 953. The adjusting plate 951 is slidably connected to a groove on the right side of the upper end of the base 1. A trapezoidal block 952 is located at the upper end of the adjusting plate 951. Push plates 953 are located on the right sides of both the front and rear ends of the scraper 94. The right ends of both push plates 953 are respectively connected to... The inclined surface of the left end of the trapezoidal block 952 is in contact. The drive assembly 95 also includes a screw 954 and a bellows 955. The screw 954 is rotatably connected to the middle of the right wall of the base 1. The adjusting plate 951 is threaded to the right side of the outer arc surface of the screw 954 through a threaded hole in the middle of its right end. Bellows 955 are respectively provided at the left and right ends of the adjusting plate 951. The right end of the bellows 955 is fixedly connected to the right wall of the base 1. The bellows 955 are respectively sleeved on the outside of the left and right sides of the screw 954. During the rotation of the screw 954, the screw 954 will drive the adjusting plate 951 to move to the left through the threaded connection. At this time, the bellows 955 on the left side retracts and the bellows 955 on the right side extends. The bellows 955 can prevent the screw from moving to the left. The rod 954 is in direct contact with the external environment. During the movement of the adjusting plate 951, it will drive the trapezoidal block 952 to move to the left. When the right end of the push plate 953 contacts the inclined surface of the left end of the trapezoidal block 952, the push plate 953 will be pushed by the trapezoidal block 952 and start to drive the scraper 94 to move away from the center of the base 1. The distance between the two scrapers 94 will gradually increase, the spring 96 will contract, and the scraper 94 will flatten the sealing area of ​​the plastic packaging bag during the movement. This improves the uniformity of the sealing work and will not affect the appearance quality of the plastic packaging bag. It solves the problem of the sealing not being firm due to wrinkles in the sealing area of ​​the plastic packaging bag and ensures the sealing effect.

[0023] Among them, the front end of the connecting seat 3 is provided with a control switch group 11. The input end of the control switch group 11 is electrically connected to an external power supply. The input ends of the electric heating wire 6 and the electric push rod 98 are both electrically connected to the output end of the control switch group 11, which can regulate the electrical components inside the equipment.

[0024] Among them: a motor 10 is set in the middle of the left wall of the base 1. The right end of the output shaft of the motor 10 is fixedly connected to the left end of the screw 954. The left end of the bellows 955 on the left side is fixedly connected to the right end of the motor 10. The input end of the motor 10 is electrically connected to the output end of the control switch group 11. By adjusting the control switch group 11, the motor 10 starts to run. The output shaft of the motor 10 will drive the screw 954 to rotate. During the rotation, the screw 954 will drive the adjusting plate 951 to move to the left through the threaded connection.

[0025] The connecting seat 3 has an electric push rod 8 at its lower center. A heat insulation plate 4 is located at the lower end of the telescopic end of the electric push rod 8. A heat-conducting plate 5 is located at the lower center of the heat insulation plate 4. Electric heating wires 6 are installed on the lower side of the heat-conducting plate 5. The heat-conducting plate 5 corresponds vertically to the clearance groove 97. The input end of the electric push rod 8 is electrically connected to the output end of the control switch group 11. Through the control of the control switch group 11, the electric push rod 8 starts to operate, and its telescopic end extends, thereby causing the electric push rod to move. Rod 28 moves the heat insulation plate 4 downward, which in turn moves the heat conduction plate 5 downward, eventually causing the lower end of the heat conduction plate 5 to pass through the clearance groove 97 and contact the upper surface of the plastic packaging bag. The heat insulation plate 4 is made of polyimide, which has a low thermal conductivity and can effectively prevent heat transfer. The heat insulation plate 4 can prevent the high temperature of the heat conduction plate 5 from damaging the electric push rod 28. The heat conduction plate 5 is made of aluminum alloy, which has a very high thermal conductivity and can quickly transfer heat to the sealing area.

[0026] The working principle of the heat-sealing device for plastic packaging bags provided by this utility model is as follows: During the use of the heat-sealing device for plastic packaging bags, the operator first places the sealing area of ​​the plastic packaging bag on the upper end of the placement platform 7. Then, by adjusting the control switch group 11, the electric push rod 98 starts running, and the telescopic end of the electric push rod 98 extends, thereby causing the electric push rod 98 to drive the pressure plate 91 downwards. The pressure plate 91, through the fixing plate 92, drives the scraper 94 downwards, finally bringing the lower ends of the two scrapers 94 into contact with the upper surface of the plastic packaging bag. Then, by adjusting the control switch group 11, the electric push rod 98 stops running, and the motor 10 starts running. The output shaft of the motor 10 drives the screw 954 to rotate. During rotation, the screw 954 drives the adjusting plate 951 to move to the left via a threaded connection. At this time, the left bellows 955 contracts, and the right bellows 955 extends. The bellows 955 prevent the screw 954 from directly contacting the external environment. As the adjusting plate 951 moves, it drives the trapezoidal block 952 to move to the left. When the right end of the push plate 953 contacts the inclined surface of the left end of the trapezoidal block 952, the push plate 953 is pushed by the trapezoidal block 952 and begins to move the scraper 94 away from the center of the base 1. The distance between the two scrapers 94 gradually increases, the spring 96 contracts, and the scraper 94 flattens the sealing area of ​​the plastic bag during its movement. After the sealing area is flattened, the motor 10 stops running and the electric push rod 8 starts running by adjusting the control switch group 11. The telescopic end of the electric push rod 8 extends, thereby driving the heat insulation plate 4 downward. The heat insulation plate 4 drives the heat conducting plate 5 downward. The heat insulation plate 4 is made of polyimide, which has a low thermal conductivity and can effectively prevent heat transfer. The heat insulation plate 4 can prevent the high temperature of the heat conducting plate 5 from damaging the electric push rod 8. The heat conducting plate 5 is made of aluminum alloy, which has a very high thermal conductivity and can quickly transfer heat to the sealing area. When the lower end of the heat conducting plate 5 passes through the relief groove 97 and contacts the upper surface of the plastic packaging bag, the electric push rod 8 starts running by adjusting the control switch group 11. When rod 28 stops operating, heating wire 6 starts operating. Heating wire 6 is a nickel-chromium alloy heating wire with high resistivity, which can heat up rapidly after being energized. Heating wire 6 heats the sealing area of ​​the plastic packaging bag through heat-conducting plate 5, causing the plastic material to reach a molten state. At the same time, through the regulation of control switch group 11, electric push rod 28 starts operating again. The telescopic end of electric push rod 28 extends, thereby giving electric push rod 28 a downward pressure on heat insulation plate 4. Heat insulation plate 4 gives a downward pressure on heat-conducting plate 5, thereby applying pressure to the plastic packaging bag through heat-conducting plate 5. This allows the molten plastic material to tightly bind together, forming a sealed opening, thus realizing the heat-sealing of the plastic packaging bag.

[0027] It is worth noting that the electric linear actuator 98 and electric linear actuator 8 disclosed in the above embodiments can be dytp2000-550 / 50-x, the motor 10 can be ECMA-C20604RS, and the control switch group 11 is provided with control buttons corresponding to electric linear actuator 98, electric linear actuator 8 and motor 10 for controlling their switching.

[0028] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A heat-sealing device for plastic packaging bags, comprising a base (1), wherein fixed rods (2) are respectively provided at the four corners of the upper end of the base (1), the upper ends of the four fixed rods (2) are fixedly connected to the lower end of a connecting seat (3), the lower end of the connecting seat (3) is provided with an electric heating wire (6), and a placement platform (7) is provided in the middle of the upper end of the base (1), characterized in that: It also includes a leveling mechanism (9); The leveling mechanism (9) includes a pressure plate (91), a drive assembly (95), a clearance groove (97), and an electric push rod (98). The electric push rod (98) is respectively located on the left and right sides of the lower end of the connecting seat (3). The lower ends of the extension ends of the two electric push rods (98) are fixedly connected to the upper end of the pressure plate (91). A clearance groove (97) is provided in the middle of the upper end of the pressure plate (91). The drive assembly (95) is located inside the base (1).

2. The heat-sealing device for plastic packaging bags according to claim 1, characterized in that: The front end of the connector (3) is provided with a control switch group (11). The input end of the control switch group (11) is electrically connected to an external power source. The input ends of the electric heating wire (6) and the electric push rod (98) are both electrically connected to the output end of the control switch group (11).

3. The heat-sealing device for plastic packaging bags according to claim 2, characterized in that: The leveling mechanism (9) also includes a fixed plate (92), a mounting rod (93), a scraper (94), and a spring (96). The fixed plates (92) are respectively set on the left and right sides of the lower end of the pressure plate (91). The mounting rods (93) are slidably connected in the sliding holes opened in the middle of the four fixed plates (92). The ends of two horizontally adjacent mounting rods (93) near the center of the base (1) are fixedly connected to the outer surface of a scraper (94). The ends of the four mounting rods (93) away from the center of the base (1) are provided with baffles. The springs (96) are respectively set between the ends of the fixed plates (92) near the center of the base (1) and the ends of the scrapers (94) away from the center of the base (1). The springs (96) are respectively movably sleeved with the corresponding longitudinal mounting rods (93). The scraper (94) and the drive assembly (95) are installed together.

4. The heat-sealing device for plastic packaging bags according to claim 3, characterized in that: The drive assembly (95) includes an adjustment plate (951), a trapezoidal block (952), and a push plate (953). The adjustment plate (951) is slidably connected to a groove on the right side of the upper end of the base (1). The upper end of the adjustment plate (951) is provided with a trapezoidal block (952). The right sides of the front and rear ends of the scraper (94) are respectively provided with push plates (953). The right ends of the two push plates (953) are in contact with the inclined surface of the left end of the trapezoidal block (952).

5. A heat-sealing device for plastic packaging bags according to claim 4, characterized in that: The drive assembly (95) also includes a screw (954) and a bellows (955). The screw (954) is rotatably connected to the middle of the right wall of the base (1). The adjusting plate (951) is threaded to the right side of the outer arc surface of the screw (954) through a threaded hole provided at the middle of its right end. Bellows (955) are provided at the left and right ends of the adjusting plate (951). The right end of the bellows (955) is fixedly connected to the right wall of the base (1). The bellows (955) are respectively sleeved on the outside of the left and right sides of the screw (954).

6. A heat-sealing device for plastic packaging bags according to claim 5, characterized in that: A motor (10) is provided in the middle of the left wall of the base (1). The right end of the output shaft of the motor (10) is fixedly connected to the left end of the screw (954). The left end of the bellows (955) on the left side is fixedly connected to the right end of the motor (10). The input end of the motor (10) is electrically connected to the output end of the control switch group (11).

7. A heat-sealing device for plastic packaging bags according to claim 2, characterized in that: An electric push rod 2 (8) is provided in the middle of the lower end of the connecting seat (3). A heat insulation plate (4) is provided at the lower end of the telescopic end of the electric push rod 2 (8). A heat conduction plate (5) is provided in the middle of the lower end of the heat insulation plate (4). Electric heating wires (6) are provided on the lower side inside the heat conduction plate (5). The upper and lower positions of the heat conduction plate (5) and the clearance groove (97) correspond. The input end of the electric push rod 2 (8) is electrically connected to the output end of the control switch group (11).

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