Induction heat sealing device of plastic packaging bag

Abstract

The utility model relates to an induction heat sealing device of a plastic packaging bag, which belongs to the technical field of plastic packaging bag processing and comprises a workbench, the upper side of the workbench is fixedly connected with a lower induction heat sealing plate, the back of the workbench is fixedly connected with a connecting plate, and the upper side of the connecting plate is fixedly provided with a second electric telescopic rod. The output end of the second electric telescopic rod is fixedly connected with an upper induction heat sealing plate, a limiting device is arranged in the workbench, and an adjusting device is arranged on the upper side of the workbench. The limiting device comprises a first electric telescopic rod fixedly installed in the lower side of the workbench. According to the induction heat-sealing device of the plastic packaging bag, the packaging bag is placed on the upper side of the lower induction heat-sealing plate, the lower sides of the limiting frames are pushed through the first electric telescopic rods to extrude the side edges of the packaging bag, the two limiting frames are driven by the driving motor to move oppositely, the packaging bag is pushed to be flat, and the wrinkling condition in the heat-sealing period is avoided.

Description

Technical Field

[0001] This utility model relates to the field of plastic packaging bag processing technology, specifically to an induction heat sealing device for plastic packaging bags. Background Technology

[0002] Packaging bags are bag-like structures that primarily serve to store and carry items. Depending on their usage cycle and application scenario, the materials used for packaging bags vary. One common type is the plastic packaging bag. During the production process, this type of packaging bag requires heat sealing on one side of the opening, thus necessitating the use of appropriate heat sealing equipment.

[0003] A search revealed that prior art publication number CN217375149U discloses a precision induction heat-sealing device for plastic packaging bags, including a heat-induction sealing block, a traction roller, a take-up roller, a side plate, a machine body, a controller, and a conveyor. This invention utilizes a push-down module within the heat-induction sealing block's outer shell to drive the heat-sealing block downwards during heat sealing. This causes the connecting gear frame to move downwards and contact the rollers, driving the upper push rod to move vertically upwards. This, in turn, causes the push plate in the exhaust shell to move upwards. After the heat-sealing block returns to its original position, the upper push rod moves downwards again, causing the push plate to push the gas in the exhaust shell, resulting in a uniform gas ejection that cools the opening of the plastic bag. By improving the device's structure, the device can effectively and quickly cool the opening of the heat-sealed plastic bag during use, accelerating its curing and preventing deformation during transportation.

[0004] However, this utility model lacks a limiting structure for the side of the packaging bag, which easily leads to wrinkles during heat sealing, resulting in a serious decline in the quality of the packaging bag, wasting a lot of resources and causing a lot of losses. Therefore, an induction heat sealing device for plastic packaging bags is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an induction heat-sealing device for plastic packaging bags, which has advantages such as side-limiting of the packaging bag. It solves the problem that the lack of a side-limiting structure for the packaging bag makes it easy for wrinkles to occur during heat sealing, resulting in a serious decline in the quality of the packaging bag, wasting a lot of resources, and causing a lot of losses.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an induction heat sealing device for plastic packaging bags, comprising a workbench, a lower induction heat sealing plate fixedly connected to the upper side of the workbench, a connecting plate fixedly connected to the back of the workbench, a second electric telescopic rod fixedly installed on the upper side of the connecting plate, an upper induction heat sealing plate fixedly connected to the output end of the second electric telescopic rod, a limit device provided inside the workbench, and an adjustment device provided on the upper side of the workbench;

[0007] The limiting device includes a first electric telescopic rod fixedly installed inside the lower side of the workbench, a second connecting plate fixedly connected to the output end of the first electric telescopic rod, and two limiting frames slidably connected to the upper side of the second connecting plate;

[0008] The adjustment device includes a drive motor fixedly installed on the upper right end of the workbench, a threaded rod fixedly connected to the output end of the drive motor, two first limiting sliders threadedly connected to the output end of the threaded rod, a slide rod fixedly connected to the upper side of the workbench, and two second limiting sliders slidably sleeved on the outside of the slide rod.

[0009] Furthermore, the upper side of the lower induction heat sealing plate is fixedly connected with a plurality of first heat sealing teeth, and the lower side of the upper induction heat sealing plate is fixedly connected with a plurality of second heat sealing teeth.

[0010] Furthermore, multiple heating elements are fixedly installed inside both the lower and upper induction heat sealing plates, and these heating elements are arranged equidistantly in the horizontal direction.

[0011] Furthermore, the spacing between the first heat-sealing teeth is matched with the spacing between the second heat-sealing teeth.

[0012] Furthermore, the threaded rod is a bidirectional threaded rod, and the interior of the limiting frame is provided with through holes that match the first limiting slider and the second limiting slider.

[0013] Furthermore, the workbench is provided with limiting holes that are compatible with the limiting frame.

[0014] Compared with the prior art, this utility model provides an induction heat sealing device for plastic packaging bags, which has the following beneficial effects:

[0015] 1. The induction heat sealing device for the plastic packaging bag works by placing the packaging bag on the upper side of the lower induction heat sealing plate, using the first electric telescopic rod to push the lower side of the limiting frame to squeeze the side of the packaging bag, and then using the drive motor to drive the two limiting frames to move in opposite directions to flatten the packaging bag and avoid wrinkles during heat sealing.

[0016] 2. The induction heat sealing device for this plastic packaging bag, when the limiting frame moves up and down, the threaded rod and the sliding rod slide in the through hole using the first limiting slider and the second limiting slider respectively, so that the limiting frame at different heights can also achieve the moving effect. This solves the problem of the lack of a limiting structure on the side of the packaging bag, which easily causes wrinkles during heat sealing, resulting in a serious decline in the quality of the packaging bag, wasting a lot of resources and causing a lot of losses. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the structure of this utility model;

[0018] Figure 2 This is a front view of the structure of this utility model;

[0019] Figure 3 This is a top view of the structure of the workbench of this utility model;

[0020] Figure 4 This is a three-dimensional structural view of the lower induction heat sealing plate and the upper induction heat sealing plate of this utility model;

[0021] Figure 5 This is a three-dimensional view of the limiting frame of this utility model.

[0022] In the figure: 1. Workbench, 2. First electric telescopic rod, 3. Second connecting plate, 4. Limiting frame, 5. Drive motor, 6. First limiting slider, 7. Through hole, 8. Threaded rod, 9. Lower induction heat sealing plate, 10. First heat sealing tooth, 11. Connecting plate, 12. Second electric telescopic rod, 13. Upper induction heat sealing plate, 14. Second heat sealing tooth, 15. Slide rod, 16. Second limiting slider, 17. Heating tube. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1 to 5 This embodiment of an induction heat-sealing device for plastic packaging bags includes a workbench 1. A lower induction heat-sealing plate 9 is fixedly connected to the upper side of the workbench 1, and a connecting plate 11 is fixedly connected to the back of the workbench 1. A second electric telescopic rod 12 is fixedly installed on the upper side of the connecting plate 11, and an upper induction heat-sealing plate 13 is fixedly connected to the output end of the second electric telescopic rod 12. A limit device is provided inside the workbench 1, and an adjustment device is provided on the upper side of the workbench 1. The limit device includes a first electric telescopic rod 2 fixedly installed inside the lower side of the workbench 1, a second connecting plate 3 fixedly connected to the output end of the first electric telescopic rod 2, and two limit frames 4 slidably connected to the upper side of the second connecting plate 3. The adjustment device includes a drive motor 5 fixedly installed on the upper right end of the workbench 1, a threaded rod 8 fixedly connected to the output end of the drive motor 5, two first limit sliders 6 threadedly connected to the output end of the threaded rod 8, a slide rod 15 fixedly connected to the upper side of the workbench 1, and two second limit sliders 16 slidably sleeved on the outside of the slide rod 15.

[0025] The lower induction heat sealing plate 9 has multiple first heat sealing teeth 10 fixedly connected to its upper side, and the upper induction heat sealing plate 13 has multiple second heat sealing teeth 14 fixedly connected to its lower side. Multiple heating tubes 17 are fixedly installed inside both the lower induction heat sealing plate 9 and the upper induction heat sealing plate 13. The multiple heating tubes 17 are arranged horizontally at equal intervals. The spacing between the first heat sealing teeth 10 and the spacing between the second heat sealing teeth 14 are matched. The threaded rod 8 is a bidirectional threaded rod. The limiting frame 4 has through holes 7 that match the first limiting slider 6 and the second limiting slider 16 inside. The worktable 1 has limiting holes that match the limiting frame 4 inside.

[0026] It should be noted that the lower induction heat sealing plate 9 and the first heat sealing tooth 10 have good thermal conductivity and can quickly transfer the heat energy generated by the heating tube 17 to achieve heat sealing of the plastic packaging bag. When the limiting frame 4 moves relative to or away from each other, the lower side of the limiting frame 4 is slidably connected in the second connecting plate 3, and the lower side of the limiting frame 4 is a snap-fit ​​slider, and the second heat sealing tooth 14 and the first heat sealing tooth 10 can mesh with each other.

[0027] The working principle of the above embodiments is as follows:

[0028] The plastic packaging bag moves to the upper side of the lower induction heat-sealing plate 9 and abuts against the upper side of the first heat-sealing tooth 10. The first electric telescopic rod 2 is activated to drive the limiting frame 4 to move downward and abut against the upper surface of the packaging bag. The first limiting slider 6 and the second limiting slider 16 slide vertically in the through hole 7. Then, the drive motor 5 is activated to drive the threaded rod 8 to rotate the first limiting slider 6 and adjust the distance between the two limiting frames 4 to meet the size limiting requirements of different packaging bags. During the movement, the inner top wall of the limiting frame 4 pushes the two sides of the packaging bag to flatten the wrinkled parts. Then, the second electric telescopic rod 12 pushes the upper induction heat-sealing plate 13 downward and uses the second heat-sealing tooth 14 to abut against and engage with the first heat-sealing tooth 10. The electric heating tube 17 is turned on to transfer heat energy to the first heat-sealing tooth 10 and the second heat-sealing tooth 14 to quickly heat-seal the plastic bag. Finally, the upper induction heat-sealing plate 13 and the lower induction heat-sealing plate 9 separate, and the first electric telescopic rod 2 pushes the limiting frame 4 upward to complete the heat-sealing process.

[0029] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. Any method that can achieve its beneficial effect can be implemented. In addition, the electrical components in this embodiment are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer that plays a control role. Those skilled in the art can control the electrical components through simple programming. Moreover, the existing disclosed power connection technology is also common knowledge in the field. Therefore, the specific structural composition and working principle will not be described in detail in this embodiment.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An inductive heat sealing device for plastic packaging bags, comprising a worktable (1), characterized in that: The upper side of the workbench (1) is fixedly connected with a lower induction heat sealing plate (9), the back of the workbench (1) is fixedly connected with a connecting plate (11), the upper side of the connecting plate (11) is fixedly installed with a second electric telescopic rod (12), the output end of the second electric telescopic rod (12) is fixedly connected with an upper induction heat sealing plate (13), the inside of the workbench (1) is provided with a limiting device, and the upper side of the workbench (1) is provided with an adjusting device. The limiting device comprises a first electric telescopic rod (2) fixedly installed on the inside of the lower side of the workbench (1), a second connecting plate (3) fixedly connected with the output end of the first electric telescopic rod (2) and two limiting frames (4) slidingly connected with the upper side of the second connecting plate (3). The adjusting device comprises a driving motor (5) fixedly installed on the upper side right end of the workbench (1), a threaded rod (8) fixedly connected with the output end of the driving motor (5), two first limiting sliding blocks (6) screwedly connected with the output end of the threaded rod (8), a sliding rod (15) fixedly connected with the upper side of the workbench (1) and two second limiting sliding blocks (16) slidingly sleeved on the outside of the sliding rod (15).

2. The inductive heat sealing apparatus for plastic packaging bags according to claim 1, wherein: The upper side of the lower induction heat sealing plate (9) is fixedly connected with a plurality of first heat sealing teeth (10), and the lower side of the upper induction heat sealing plate (13) is fixedly connected with a plurality of second heat sealing teeth (14).

3. The inductive heat sealing apparatus for plastic packaging bags according to claim 1, wherein: The inside of the lower induction heat sealing plate (9) and the upper induction heat sealing plate (13) is fixedly installed with a plurality of electric heating pipes (17), and a plurality of the electric heating pipes (17) are transversely equidistantly arranged.

4. The inductive heat sealing apparatus for plastic packaging bags according to claim 2, wherein: The spacing of the first heat sealing teeth (10) is matched with the spacing of the second heat sealing teeth (14).

5. The inductive heat sealing apparatus for plastic packaging bags according to claim 1, wherein: The threaded rod (8) is a bidirectional threaded rod, and the inside of the limiting frame (4) is provided with a through hole (7) matched with the first limiting sliding block (6) and the second limiting sliding block (16).

6. The inductive heat sealing apparatus for plastic packaging bags according to claim 1, wherein: The inside of the workbench (1) is provided with a limiting hole matched with the limiting frame (4).

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