Sealing equipment for film plastic packaging bag

Abstract

The utility model belongs to the technical field of plastic packaging bag sealing equipment, and particularly relates to film plastic packaging bag sealing equipment which comprises a working table, an anti-skid plate is fixedly connected to the upper portion of the working table, a supporting table is fixedly connected to the upper portion of the working table, and a supporting plate is slidably connected to the inner side of the supporting table. A heating plate is fixedly connected into the supporting plate, a sealing plate is fixedly connected to the lower portion of the heating plate, an electric push rod is fixedly connected to the upper portion of the supporting plate, the telescopic end of the electric push rod is fixedly connected to the upper portion of the heating plate, a connecting rod is fixedly connected to the lower portion of the supporting plate, and a connecting plate is fixedly connected to the inner side of the supporting table. By arranging the pressing plate, the connecting rod, the sealing plate and the driving assembly, sealing is achieved after pressing is conducted, the sealing efficiency and quality are effectively improved, by arranging the supporting base, the rolling barrel, the second threaded rod and the self-adaption assembly, it is guaranteed that the sealing portion is kept flat in the sealing process, wrinkles or bubbles are avoided, and therefore the sealing quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic packaging bag sealing equipment, and particularly relates to a sealing device for thin-film plastic packaging bags. Background Art

[0002] Plastic packaging bags are packaging bags made of plastic as raw materials and are used for various articles in production and life. In the current packaging industry, the sealing operation of thin-film plastic packaging bags occupies an important position and is widely used in daily life and industrial production. After packaging items, these packaging bags usually require a sealing device to seal the openings of the packaging bags.

[0003] The prior art has the following defects or problems: The prior art with the publication number of CN219687759U discloses a sealing device for thin-film plastic packaging bags, which relates to the technical field of plastic packaging bags and includes: a device body, a sealing frame is fixedly installed on the top of the device body, an extrusion frame is fixedly installed on the top of the device body, a hydraulic rod is fixedly inserted into the top inner wall of the sealing frame, the output end of the hydraulic rod is fixedly installed with a sealing mechanism, and a heat-resistant plate is fixedly installed at the bottom inner wall of the sealing frame. Start the electric telescopic rod to drive the extrusion top plate to move towards the extrusion bottom plate until the extrusion of the packaging bag is completed, so as to achieve the effect of fixing most positions of the packaging bag. Only a small part that fits in the center position of the heat-resistant plate is not fixed. In this way, even if the bottom of the packaging bag is affected by external forces or other factors, due to the clamping of the extrusion device, it can effectively prevent the packaging bag from folding or tilting at the sealing position, improving the quality of the entire sealing.

[0004] Although the above device can fix and seal the packaging bag during use, in the actual production process, the specifications and thicknesses of thin-film plastic packaging bags often vary, resulting in unstable sealing quality, low sealing efficiency, and complex equipment operation. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a sealing device for thin-film plastic packaging bags, which solves the problems of unstable sealing quality, low sealing efficiency, and complex equipment operation existing nowadays.

[0006] To achieve the above object, the utility model provides the following technical solutions: A sealing device for a thin-film plastic packaging bag, including a workbench, a non-slip plate is fixedly connected to the upper part of the workbench, a support table is fixedly connected to the upper part of the workbench, a support plate is slidably connected inside the support table, a heating plate is fixedly connected inside the support plate, a sealing plate is fixedly connected to the lower part of the heating plate, an electric push rod is fixedly connected to the upper part of the support plate, the telescopic end of the electric push rod is fixedly connected to the upper part of the heating plate, a connecting rod is fixedly connected to the lower part of the support plate, a connecting plate is fixedly connected inside the support table, a pressing plate is abutted against the lower part of the connecting plate, a first compression spring is fixedly connected between the connecting plate and the pressing plate, the connecting rod abuts against the upper part of the pressing plate, and a driving component is arranged on the upper part of the support table.

[0007] As a preferred technical solution of the utility model, the driving component includes a first motor, the first motor is fixedly connected inside the support table, the output end of the first motor is fixedly connected with a driving gear, a support column is fixedly connected to the upper part of the support table, a gear box is fixedly connected to the upper part of the support column, a driven gear is rotatably connected inside the gear box, the driving gear and the driven gear are meshed with each other, a threaded pipe is fixedly connected to the lower part of the driven gear, a first threaded rod is threadedly connected inside the threaded pipe, and the first threaded rod is fixedly connected to the upper part of the support plate.

[0008] As a preferred technical solution of the utility model, a support seat is slidably connected to the upper part of the workbench, a roller pressing barrel is rotatably connected inside the support seat, a connecting shaft is slidably connected inside the support seat, the roller pressing barrel is rotatably connected to the outer circumference of the connecting shaft, a second motor is fixedly connected to one side of the workbench, the output end of the second motor is fixedly connected with a second threaded rod, two limiting blocks are fixedly connected to the lower part of the support seat, one of the limiting blocks is threadedly connected to the outer circumference of the second threaded rod, and a second limiting rod is slidably connected to the middle of the other limiting block, the second limiting rod is fixedly connected inside the workbench, and an adaptive component is arranged inside the support seat.

[0009] As a preferred technical solution of the utility model, the adaptive component includes a sliding rod, the sliding rod is slidably connected inside the support seat, the sliding rod is slidably connected inside the connecting shaft, a second compression spring is fixedly connected between the connecting shaft and the support seat, and the second compression spring is sleeved on the outer circumference of the sliding rod.

[0010] As a preferred technical solution of the utility model, a limiting column is fixedly connected to the upper part of the heating plate, the limiting column is slidably connected inside the support plate, and the threaded pipe is rotatably connected inside the support table.

[0011] As a preferred technical solution of the present utility model, the connecting rod is slidably connected inside the connecting plate, and a first limiting rod is fixedly connected inside the supporting plate, and the first limiting rod is slidably connected inside the supporting platform.

[0012] As a preferred technical solution of the present utility model, a limiting plate is fixedly connected to the outside of the supporting seat, and the limiting plate is slidably connected to the upper part of the workbench.

[0013] Compared with the prior art, the present utility model provides a sealing device for a thin-film plastic packaging bag, having the following beneficial effects:

[0014] 1. In the present utility model, by providing a pressing plate, a connecting rod, a heating plate, a sealing plate, an electric push rod and a driving assembly, the pressing plate first presses the plastic bag to make it stable and prevent sliding, and the electric push rod drives the sealing plate to seal the pressed plastic bag. Using the temperature provided by the heating plate, the sealing part of the plastic bag is melted and sealed, ensuring a firm and reliable seal, realizing pressing first and then sealing, effectively improving the sealing efficiency and quality, and avoiding problems such as insecure sealing and air leakage that may occur in traditional sealing devices;

[0015] 2. In the present utility model, by providing a supporting seat, a rolling barrel, a second motor, a coupling, a second threaded rod and an adaptive assembly, the rolling barrel presses the plastic bag to ensure that the sealing part remains flat during the sealing process, avoiding wrinkles or bubbles, thereby improving the sealing quality. The rolling barrel can also perform secondary rolling on the sealed plastic bag to further compact the sealing part and ensure a firm and reliable seal, effectively solving problems such as uneven sealing and unstable sealing quality that may occur in traditional sealing devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the workbench of a sealing device for a thin-film plastic packaging bag of the present utility model;

[0017] Figure 2 is a schematic structural diagram of the limiting column of a sealing device for a thin-film plastic packaging bag of the present utility model;

[0018] Figure 3 is a schematic structural diagram of the sealing plate of a sealing device for a thin-film plastic packaging bag of the present utility model;

[0019] Figure 4 is a schematic structural diagram of the limiting block of a sealing device for a thin-film plastic packaging bag of the present utility model.

[0020] In the figure: 1, workbench; 2, support base; 3, support platform; 4, first motor; 5, support column; 6, gear box; 7, threaded tube; 8, driven gear; 9, driving gear; 10, first threaded rod; 11, electric push rod; 12, limit post; 13, support plate; 14, sealing plate; 15, connecting rod; 16, connecting plate; 17, pressing plate; 18, first compression spring; 19, first limit rod; 20, heating plate; 21, rolling barrel; 22, limit plate; 23, anti-slip plate; 24, second motor; 25, second threaded rod; 26, limit block; 27, coupling shaft; 28, sliding rod; 29, second compression spring; 30, second limit rod. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-4 , in this implementation manner: A sealing device for a thin-film plastic packaging bag includes a workbench 1. An anti-slip plate 23 is fixedly connected to the upper part of the workbench 1. A support platform 3 is fixedly connected to the upper part of the workbench 1. A support plate 13 is slidably connected to the inside of the support platform 3. A heating plate 20 is fixedly connected to the inside of the support plate 13. A sealing plate 14 is fixedly connected to the lower part of the heating plate 20. An electric push rod 11 is fixedly connected to the upper part of the support plate 13. The telescopic end of the electric push rod 11 is fixedly connected to the upper part of the heating plate 20. A connecting rod 15 is fixedly connected to the lower part of the support plate 13. A connecting plate 16 is fixedly connected to the inside of the support platform 3. A pressing plate 17 abuts against the lower part of the connecting plate 16. A first compression spring 18 is fixedly connected between the connecting plate 16 and the pressing plate 17. The connecting rod 15 abuts against the upper part of the pressing plate 17. A driving assembly is arranged on the upper part of the support platform 3. The driving assembly includes a first motor 4. The first motor 4 is fixedly connected to the inside of the support platform 3. The output end of the first motor 4 is fixedly connected to a driving gear 9. A support column 5 is fixedly connected to the upper part of the support platform 3. A gear box 6 is fixedly connected to the upper part of the support column 5. A driven gear 8 is rotatably connected to the inside of the gear box 6. The driving gear 9 and the driven gear 8 are meshed with each other. A threaded tube 7 is fixedly connected to the lower part of the driven gear 8. A first threaded rod 10 is threadedly connected to the inside of the threaded tube 7. The first threaded rod 10 is fixedly connected to the upper part of the support plate 13.

[0023] Specifically, the workbench 1 serves as the basic platform of the sealing device and is used to place the thin-film plastic packaging bags to be sealed. The anti-slip plate 23 is fixed to the upper part of the workbench 1 to increase the friction and prevent the packaging bag from sliding during the sealing process. The support table 3 is fixed to the upper part of the workbench 1 to provide support for the support plate 13 and other related components. The support plate 13 is slidably connected to the inside of the support table 3, and a heating plate 20 is fixedly connected inside it, which is used to support the heating and sealing components. The heating plate 20 is fixed inside the support plate 13 and is used to heat the sealing part of the thin-film plastic packaging bag to melt it for sealing. The sealing plate 14 is fixed to the lower part of the heating plate 20 and is used to press the sealed part of the heated packaging bag to complete the sealing. The electric push rod 11 is fixed to the upper part of the support plate 13, and its telescopic end is connected to the upper part of the heating plate 20, which is used to drive the up and down movement of the support plate 13. The connecting rod 15 is fixed to the lower part of the support plate 13 and cooperates with the connecting plate 16 and the pressing plate 17 to transmit power. The connecting plate 16 is fixed to the inside of the support table 3 and is connected to the pressing plate 17 by a first compression spring 18, which is used to transmit pressure. The pressing plate 17 is located below the connecting plate 16 and is connected to the connecting plate 16 by the first compression spring 18, which is used to press the packaging bag. The first compression spring 18 is connected between the connecting plate 16 and the pressing plate 17 and is used to balance the pressure. The driving component is used to drive the up and down movement of the support plate 13. The first motor 4 is fixed inside the support table 3 to provide a power source. The driving gear 9 is fixed to the output end of the first motor 4 and meshes with the driven gear 8. The driven gear 8 is rotatably connected inside the gear box 6 and meshes with the driving gear 9. The threaded tube 7 is fixed to the lower part of the driven gear 8, and a first threaded rod 10 is internally threaded therein. The first threaded rod 10 is fixed to the upper part of the support plate 13, and the rotation of the threaded tube 7 drives the up and down movement of the support plate 13.

[0024] In this embodiment, a support seat 2 is slidably connected to the upper part of the workbench 1. A roller pressing barrel 21 is rotatably connected to the inside of the support seat 2. A connecting shaft 27 is slidably connected to the inside of the support seat 2. The roller pressing barrel 21 is rotatably connected to the outer periphery of the connecting shaft 27. A second motor 24 is fixedly connected to one side of the workbench 1. A second threaded rod 25 is fixedly connected to the output end of the second motor 24. Two limiting blocks 26 are fixedly connected to the lower part of the support seat 2. One limiting block 26 is threadedly connected to the outer periphery of the second threaded rod 25. The middle part of the other limiting block 26 is slidably connected to a second limiting rod 30. The second limiting rod 30 is fixedly connected to the inside of the workbench 1. An adaptive component is arranged inside the support seat 2. The adaptive component includes a sliding rod 28. The sliding rod 28 is slidably connected to the inside of the support seat 2. The sliding rod 28 is slidably connected to the inside of the connecting shaft 27. A second compression spring 29 is fixedly connected between the connecting shaft 27 and the support seat 2. The second compression spring 29 is sleeved on the outer periphery of the sliding rod 28.

[0025] Specifically, the support base 2 is slidably connected to the upper part of the workbench 1, and a rolling barrel 21 is rotatably connected inside. The rolling barrel 21 is rotatably connected to the outer periphery of the coupling shaft 27 and is used for rolling the packaging bag to ensure the sealing quality. The coupling shaft 27 is slidably connected inside the support base 2 and is rotatably connected to the rolling barrel 21. The second motor 24 is fixed to one side of the workbench 1, and the output end is connected with a second threaded rod 25 for driving the movement of the support base 2. The second threaded rod 25 is fixed to the output end of the second motor 24 and is threadedly connected to the limit block 26. There are two limit blocks 26. One is threadedly connected to the outer periphery of the second threaded rod 25, and the other is slidably connected to the second limit rod 30 in the middle. The second limit rod 30 is fixed inside the workbench 1 and is slidably connected to the limit block 26. The adaptive component is arranged inside the support base 2 and is used for adjusting the distance between the rolling barrel 21 and the sealing plate 14. The slide rod 28 is slidably connected inside the support base 2 and the coupling shaft 27. The second compression spring 29 is fixed between the coupling shaft 27 and the support base 2 and is sleeved on the outer periphery of the slide rod 28.

[0026] In this embodiment, a limit post 12 is fixedly connected to the upper part of the heating plate 20. The limit post 12 is slidably connected inside the support plate 13, and the threaded tube 7 is rotatably connected inside the support table 3. The connecting rod 15 is slidably connected inside the connecting plate 16. A first limit rod 19 is fixedly connected inside the support plate 13, and the first limit rod 19 is slidably connected inside the support table 3. A limit plate 22 is fixedly connected to the outside of the support base 2, and the limit plate 22 is slidably connected to the upper part of the workbench 1.

[0027] Specifically, the limit post 12 is fixed to the upper part of the heating plate 20 and is slidably connected inside the support plate 13 to limit the upward movement height of the heating plate 20. The first limit rod 19 is used to limit the movement track of the support plate 13. The limit plate 22 is fixed to the outside of the support base 2 and is slidably connected to the upper part of the workbench 1 to limit the lateral movement of the support base 2.

[0028] Working principle and usage process of the utility model: First, the user places the plastic film packaging bag to be sealed on the workbench 1 and positions it below the sealing plate 14. During the sealing process, the second motor 24 starts to work. By driving the rotation of the second threaded rod 25, a limit block 26 moves along the second threaded rod 25 under the threaded connection, while the other limit block 26 slides along the second limit rod 30, thereby driving the support seat 2 and the rolling barrel 21 to slide along the workbench 1. The rolling of the rolling barrel 21 rolls the sealed packaging bag to ensure the sealing quality. At the same time, under the action of the compression spring two 29, the sliding rod 28 in the adaptive component can automatically adjust the distance between the rolling barrel 21 and the sealing plate 14 according to the thickness of the packaging bag to achieve adaptive rolling. Then, start the first motor 4. The rotation of the first motor 4 drives the rotation of the driving gear 9, and then drives the driven gear 8 to rotate through the meshing relationship with the driven gear 8. The rotation of the driven gear 8 causes the threaded tube 7 fixed to it to rotate accordingly, and the threaded connection between the threaded tube 7 and the first threaded rod 10 enables the first threaded rod 10 to move up and down under the rotation of the threaded tube 7. Since the first threaded rod 10 is fixedly connected to the support plate 13, the support plate 13 also moves up and down accordingly. When the support plate 13 moves downward, under the push of the connecting rod 15, the pressing plate 17 receives a downward pressure, and at the same time, the first compression spring 18 is stretched. When the pressing plate 17 touches the sealing part of the packaging bag, the sealing plate 14 is heated under the action of the heating plate 20, and the electric push rod 11 extends. By driving the heating plate 20 and the sealing plate 14 to move downward, the sealing plate 14 heats and presses the packaging bag to complete the sealing.

[0029] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A sealing device for a film plastic packaging bag, comprising a workbench (1), characterized in that: The upper part of the workbench (1) is fixedly connected to an anti-slip plate (23), the upper part of the workbench (1) is fixedly connected to a support platform (3), the inner side of the support platform (3) is slidably connected to a support plate (13), the inner part of the support plate (13) is fixedly connected to a heating plate (20), the lower part of the heating plate (20) is fixedly connected to a sealing plate (14), the upper part of the support plate (13) is fixedly connected to an electric push rod (11), and the telescopic end of the electric push rod (11) is fixedly connected to the upper part of the support plate (13). The connecting rod (15) is fixedly connected to the upper part of the heating plate (20), the lower part of the support plate (13) is fixedly connected to the connecting plate (16), the inner side of the support platform (3) is fixedly connected to the connecting plate (16), the lower part of the connecting plate (16) is abutted against a pressure plate (17), a compression spring (18) is fixedly connected between the connecting plate (16) and the pressure plate (17), the connecting rod (15) abuts against the upper part of the pressure plate (17), and a driving assembly is arranged on the upper part of the support platform (3).

2. The sealing device for a film plastic packaging bag according to claim 1, characterized in that: The driving assembly comprises a motor (4), the motor (4) being fixedly connected to the inside of the support platform (3), the output end of the motor (4) being fixedly connected to a driving gear (9), the upper part of the support platform (3) being fixedly connected to a support column (5), the upper part of the support column (5) being fixedly connected to a gear box (6), the gear box (6) being rotatably connected to a driven gear (8), the driving gear (9) and the driven gear (8) being meshed, the lower part of the driven gear (8) being fixedly connected to a threaded tube (7), the inner part of the threaded tube (7) being threadedly connected to a threaded rod (10), and the threaded rod (10) being fixedly connected to the upper part of the support plate (13).

3. The sealing device for a film plastic packaging bag according to claim 2, characterized in that: The upper part of the workbench (1) is slidably connected to a support seat (2), the inner side of the support seat (2) is rotatably connected to a roller barrel (21), the inner side of the support seat (2) is slidably connected to a connecting shaft (27), the roller barrel (21) is rotatably connected to the outer periphery of the connecting shaft (27), one side of the workbench (1) is fixedly connected to a second motor (24), the output end of the second motor (24) is fixedly connected to a second threaded rod (25), the lower part of the support seat (2) is fixedly connected to two limit blocks (26), one of the limit blocks (26) is threadedly connected to the outer periphery of the second threaded rod (25), the middle part of the other limit block (26) is slidably connected to a second limit rod (30), the second limit rod (30) is fixedly connected to the inside of the workbench (1), and an adaptive component is arranged inside the support seat (2).

4. The sealing device for a film plastic packaging bag according to claim 3, characterized in that: The adaptive component comprises a slide bar (28), wherein the slide bar (28) is slidably connected inside the support seat (2), and the slide bar (28) is slidably connected inside the connecting shaft (27). A second compression spring (29) is fixedly connected between the connecting shaft (27) and the support seat (2), and the second compression spring (29) is sleeved on the outer periphery of the slide bar (28).

5. The sealing device for a film plastic packaging bag according to claim 2, characterized in that: The upper part of the heating plate (20) is fixedly connected to a limiting column (12), the limiting column (12) is slidably connected inside the support plate (13), and the threaded tube (7) is rotatably connected inside the support platform (3).

6. The sealing device for a film plastic packaging bag according to claim 1, characterized in that: The connecting rod (15) is slidably connected to the inside of the connecting plate (16), a limiting rod (19) is fixedly connected to the inside of the support plate (13), and the limiting rod (19) is slidably connected to the inside of the support platform (3).

7. The sealing device for a film plastic packaging bag according to claim 3, characterized in that: A limiting plate (22) is fixedly connected to the outer side of the support seat (2), and the limiting plate (22) is slidably connected to the upper part of the workbench (1).

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