Plastic packaging bag sealing device

Abstract

The utility model discloses a plastic packaging bag sealing device which comprises a concave workbench, the concave workbench is connected with a rotating shaft in a rotating mode, the surface of the rotating shaft is connected with a gear, the two sides of the gear are connected with racks in a meshed mode, guide rails are installed on the two sides in the concave workbench, and two sliding blocks are connected to the guide rails in a sliding mode. Fixed blocks are installed at one ends of the two racks in a sleeving mode, movable blocks are slidably connected to the positions, corresponding to the fixed blocks, of the surfaces of the two racks, the movable blocks and the fixed blocks are connected with the corresponding sliding blocks correspondingly, and the tops of the corresponding movable blocks and fixed blocks are jointly connected with an L-shaped pressing plate through connecting rods; an electrically-connected heating resistance wire is arranged in an inner cavity of the L-shaped pressing plate, a driven belt wheel is connected to the bottom of the rotating shaft, a servo motor is installed at the top of the fixing plate, a driving belt wheel is installed at one end of the servo motor, and the driving belt wheel and the driven belt wheel are in transmission connection through a belt. The problems that a traditional device is low in sealing speed, low in efficiency and low in precision are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of packaging bag sealing technology, and in particular to a plastic packaging bag sealing device. Background Technology

[0002] With the rapid development of the packaging industry, especially in the fields of food, pharmaceuticals, and daily chemicals, the application of plastic packaging bags is becoming increasingly widespread. Due to their low cost, portability, and good storage performance, plastic packaging bags have become the preferred choice for modern product packaging. During the production process, efficient, precise, and secure sealing is required to ensure product quality and safety.

[0003] However, traditional plastic packaging bag sealing technology mainly relies on manual operation or heat sealing devices in mechanical equipment. Traditional equipment has a slow sealing speed, low efficiency and low precision, especially in large-scale production, and cannot meet the needs of high-efficiency production. Utility Model Content

[0004] To address the problems mentioned above, this utility model provides a plastic packaging bag sealing device, which effectively solves the problems of slow sealing speed, low efficiency, and low precision of traditional equipment.

[0005] This utility model adopts the following technical solution: a plastic packaging bag sealing device, including a concave worktable, a support leg connected to the bottom of the concave worktable, a fixed plate connected between the support legs, two strip-shaped through slots opened on the top of the concave worktable, a rotating shaft rotatably connected to the concave worktable, a gear connected to the surface of the rotating shaft, racks meshing on both sides of the gear, guide rails installed on both sides of the concave worktable, two sliders slidably connected on the guide rails, a fixed block sleeved on one end of each of the two racks, and a moving block slidably connected to the surface of each of the two racks at the corresponding position of the fixed block, the moving block and the fixed block being respectively connected to the corresponding slider, the top of the corresponding moving block and the fixed block being connected to an L-shaped pressing plate through a connecting rod, a heating resistance wire electrically connected in the inner cavity of the L-shaped pressing plate, a driven pulley connected to the bottom of the rotating shaft, a servo motor installed on the top of the fixed plate, a driving pulley installed on one end of the servo motor, and the driving pulley and the driven pulley being connected by belt drive.

[0006] Furthermore, after the two L-shaped pressing plates are bonded together, the movement trajectory of the moving block does not come into contact with the gear.

[0007] Furthermore, the L-shaped press plate is made of a metal with good thermal conductivity.

[0008] Furthermore, the heating resistance wire is a metal alloy wire with rapid heating and uniform heat conduction properties.

[0009] Furthermore, the connecting rod slides within the strip-shaped through groove.

[0010] Furthermore, the size of the driving pulley is smaller than the size of the driven pulley.

[0011] The advantages of this invention are as follows: The entire device is driven by a servo motor and belt drive, achieving automated control of the sealing process. The servo motor precisely controls the movement of the rotating shaft, and the rack drives the closing of the pressing plate, completing the sealing process without manual intervention, greatly improving work efficiency and production precision. The L-shaped pressing plate is internally equipped with electrically connected heating resistance wires and uses a high thermal conductivity metal as the material, enabling rapid heating and maintaining uniform heat conduction. Compared to traditional sealing methods, the heating effect is more uniform, effectively avoiding problems such as weak seals or air leaks caused by uneven heat distribution, ensuring the sealing quality of each packaging bag. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the structure of this utility model.

[0014] In the figure, 1-concave worktable, 2-support leg, 3-fixed plate, 4-strip groove, 5-rotating shaft, 6-gear, 7-rack, 8-guide rail, 9-slider, 10-fixed block, 11-moving block, 12-connecting rod, 13-L-shaped pressing plate, 14-driven pulley, 15-servo motor, 16-drive pulley. Detailed Implementation

[0015] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0016] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] See Figure 1-2 As shown, a plastic packaging bag sealing device includes a concave worktable 1, with support legs 2 connected to the bottom of the concave worktable 1, and a fixing plate 3 connecting the support legs 2. Two strip-shaped through slots 4 are formed on the top of the concave worktable 1. A rotating shaft 5 is rotatably connected to the concave worktable 1, and gears 6 are connected to the surface of the rotating shaft 5. Gear racks 7 are meshed on both sides of the gears 6. Guide rails 8 are installed on both sides inside the concave worktable 1, and two sliders 9 are slidably connected to the guide rails 8. A fixing block 10 is fitted onto one end of each of the two racks 7, and the surfaces of the two racks 7 are located on the fixing block 10. Each fixed block 10 is slidably connected to a movable block 11 at a corresponding position. The movable block 11 and the fixed block 10 are respectively connected to the corresponding slider 9. The top of the corresponding movable block 11 and the fixed block 10 are connected to an L-shaped pressing plate 13 through a connecting rod 12. The inner cavity of the L-shaped pressing plate 13 is provided with an electrically connected heating resistance wire. The bottom of the rotating shaft 5 is connected to a driven pulley 14. The top of the fixed plate 3 is equipped with a servo motor 15. One end of the servo motor 15 is equipped with a driving pulley 16. The driving pulley 16 and the driven pulley 14 are connected by belt drive.

[0018] After the two L-shaped pressing plates 13 are attached, the movement trajectory of the moving block 11 does not come into contact with the gear 6, thus avoiding the movement conflict caused by the moving block 11 moving to the meshing point of the gear 6 and the rack 7 after the L-shaped pressing plates 13 are attached.

[0019] The L-shaped pressing plate 13 is made of a metal with good thermal conductivity, which can quickly and evenly transfer the heat generated by the heating resistance wire to the opening of the plastic bag, thereby reducing sealing time and improving production efficiency.

[0020] The heating resistance wire is a metal alloy wire with rapid heating and uniform heat conduction. It can reach the required temperature in a very short time and ensure uniform heat distribution, thereby improving the efficiency and consistency of sealing.

[0021] The connecting rod 12 slides within the strip groove 4, ensuring that the connecting rod 12 moves along a precise trajectory, thereby enabling the L-shaped pressing plate 13 to be more stably and accurately aligned with the opening of the plastic bag, avoiding uneven sealing caused by deviation.

[0022] The size of the driving pulley 16 is smaller than that of the driven pulley 14, which can optimize the transmission ratio, enhance the torque transmission efficiency of the system, make the drive system work more efficiently, and reduce power waste.

[0023] Working principle: When the user starts the device, the servo motor 15 drives the driven pulley 14 to rotate via the active pulley 16, which in turn drives the rotating shaft 5 to rotate. The rotation of the rotating shaft 5 drives the gear 6 to rotate. The gear 6, through meshing, drives two racks 7 to slide along the guide rail 8. The two racks 7 slide in opposite directions, pushing the connected fixed block 10. The moving block 11 slides on the corresponding rack 7. The fixed block 10 drives the L-shaped pressing plate 13 to move via the connecting rod 12. At this time, the two L-shaped pressing plates 13 gradually approach each other, placing the opening of the plastic packaging bag between the two L-shaped pressing plates 13. The inner cavity of the L-shaped pressing plate 13 contains an electrically connected heating resistance wire. The resistance wire heats up rapidly after being energized, providing the heat required for sealing. When the L-shaped pressing plate 13 approaches the opening of the packaging bag, the heating resistance wire heats the L-shaped pressing plate 13 and heats the opening of the plastic bag to a melting temperature. At this time, the vertical section of the L-shaped pressing plate 13 will press and heat the opening of the plastic bag to ensure that the opening of the plastic bag melts and is firmly sealed.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A plastic packaging bag sealing device, comprising a concave workbench (1), the bottom of the concave workbench (1) is connected with supporting legs (2), and the supporting legs (2) are connected with a fixed plate (3), characterized in that: The concave workbench (1) top is provided with two strip-shaped through grooves (4), the concave workbench (1) is rotatably connected with a rotating shaft (5), the rotating shaft (5) surface is connected with a gear (6), the gear (6) both sides are engagedly connected with a rack (7), the concave workbench (1) inside both sides are installed with a guide rail (8), the guide rail (8) is slidably connected with two sliders (9), two the rack (7) one end is all installed with a fixed block (10) in sleeve, two the rack (7) surface is slidably connected with a moving block (11) in the fixed block (10) corresponding position, the moving block (11) and the fixed block (10) are connected with corresponding the slider (9) respectively, corresponding the moving block (11) and the fixed block (10) top are connected with L-shaped pressing plate (13) through connecting rod (12) jointly, the L-shaped pressing plate (13) inner chamber is equipped with electrically connected heating resistance wire, the rotating shaft (5) bottom is connected with driven pulley (14), the fixed plate (3) top is installed with servo motor (15), the servo motor (15) one end is installed with driving pulley (16), the driving pulley (16) with the driven pulley (14) is driven by belt transmission connection.

2. A plastic bag sealing device according to claim 1, wherein: After two the L-shaped pressing plate (13) is pasted, the moving block (11) trajectory is not contacted with the gear (6).

3. A plastic bag sealer as defined in claim 2 wherein: The L-shaped pressing plate (13) material is metal with heat conductivity.

4. A plastic bag sealing device according to claim 3, wherein: The heating resistance wire is metal alloy wire with rapid heating and heat conduction uniform performance.

5. A plastic bag sealing apparatus according to claim 4, wherein: The connecting rod (12) is located in the strip-shaped through groove (4) and slides.

6. A plastic bag sealing apparatus according to claim 5, wherein: The size of the driving pulley (16) is less than the size of the driven pulley (14).

Images