Plastic film processing heat sealing mechanism convenient to adjust

Abstract

The plastic film processing heat sealing mechanism convenient to adjust comprises a heat sealing box body, a working platform is fixedly connected to the lower end of the heat sealing box body, a conveying assembly is arranged at the upper end of the working platform, and a heat sealing adjusting mechanism is arranged on the top face of an inner cavity of the heat sealing box body. The plastic film auxiliary compression roller has the advantages that the practicability is high, through mutual cooperation between a hinged support arm and an inner hinged abutting rod, the angle between the hinged support arm and the conveying assembly and the angle between the hinged support arm and the conveying assembly can be adjusted and changed according to the overall downward pressing degree of a connecting transverse plate, and it is guaranteed that the plastic film auxiliary compression roller effectively compresses a plastic film on the surface of the conveying assembly; according to the heat sealing mechanism for plastic film processing, plastic film raw materials can be conveniently added, the phenomenon that a plastic film is wrinkled in the heat sealing process is avoided, the working efficiency and the processing quality of the heat sealing mechanism for plastic film processing are improved, normal conveying of the plastic film is not affected, and the overall effectiveness and practicability of the device are improved; and the increase of the production cost is reduced or avoided.

Description

Technical Field

[0001] This invention relates to the field of plastic film processing technology, specifically to a heat-sealing mechanism for processing plastic films that is easy to adjust. Background Technology

[0002] Plastic film is a film made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins. It is used for packaging and as a coating layer. Plastic packaging and plastic packaging products are taking up an increasingly large share of the market, especially composite plastic flexible packaging, which has been widely used in food, medicine, chemical and other fields. During the processing of plastic film, heat sealing mechanism is often used to seal the plastic film. The existing operation method is mostly to manually feed the plastic film to the heat sealing area. If you are not careful, you can easily burn your hands. Moreover, sealing and cutting are not completed at the same time, resulting in low work efficiency.

[0003] A heat-sealing mechanism for plastic film processing, disclosed in CN210174301U, includes a heat-sealing box with an inlet on one side and an outlet on the other. Guide components, including an upper guide roller and a lower guide roller, are installed at both the inlet and outlet. A heat-sealing mechanism is located inside the heat-sealing box, comprising a motor mounting base, a drive motor, a screw, a support plate, a guide slide, a support rod, an upper heat-sealing block, a lower heat-sealing block, and a conveyor table. This heat-sealing mechanism heat-seales the plastic film using the upper and lower heat-sealing blocks. After heat-sealing, a cutter closely adheres to the plastic film and cuts it. The heat-sealing and cutting processes require no manual operation, preventing burns to operators and reducing labor intensity. Heat-sealing and cutting can be performed simultaneously, resulting in high work efficiency.

[0004] Problems with existing technology:

[0005] 1. Traditional heat sealing mechanisms for plastic film processing do not have an auxiliary cutting structure, which means that the plastic film needs to be cut twice after heat sealing, increasing the number of steps and causing inconvenience to users.

[0006] 2. Existing heat sealing mechanisms are difficult to adjust the height of the heat sealing mechanism according to the actual thickness of the plastic film, and they do not have the function of pleating the plastic film during heat sealing, which leads to the inability to guarantee the quality of heat sealing and affects the efficiency of heat sealing work.

[0007] Therefore, it is necessary to design a heat-sealing mechanism for plastic film processing that is highly practical and ensures that the auxiliary pressure roller of the plastic film effectively presses the plastic film on the surface of the conveying component. Summary of the Invention

[0008] The purpose of this invention is to provide a heat-sealing mechanism for processing plastic films that is easy to adjust, so as to solve the problems mentioned in the background art.

[0009] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a heat sealing mechanism for processing plastic film that is easy to adjust, comprising a heat sealing box, a working platform fixedly connected to the lower end of the heat sealing box, a conveying component provided at the upper end of the working platform, a heat sealing adjustment mechanism provided on the top surface of the inner cavity of the heat sealing box, an auxiliary roller pressing mechanism movably connected to the lower end of the heat sealing adjustment mechanism, and an auxiliary film cutting mechanism installed on the top surface of the inner cavity of the heat sealing box on one side of the heat sealing adjustment mechanism;

[0010] The heat sealing adjustment mechanism includes a height adjustment heat sealing unit and a limiting unit. The limiting unit is disposed at the output end of the height adjustment heat sealing unit and is fixedly connected to it.

[0011] The auxiliary roller pressing mechanism includes a connecting unit and a roller reset unit, which are hinged to each other.

[0012] The auxiliary film cutting mechanism includes a bidirectional drive unit and a cutting unit, with one end of the cutting unit connected to the outer surface of the output end of the bidirectional drive unit.

[0013] According to the above technical solution, the height-adjustable heat-sealing unit includes a hydraulic cylinder, which is installed on the upper outer surface of the heat-sealing box and fixedly connected thereto. A hydraulic push rod is fixedly installed on the output shaft of the hydraulic cylinder, and a connecting cross plate is fixedly connected to the output end of the hydraulic push rod.

[0014] According to the above technical solution, the limiting unit includes a fixed connecting block. The upper outer surface of the fixed connecting block is fixedly connected to the output end of the hydraulic push rod. Fixed connecting blocks are fixedly installed on the outer surfaces of both ends of the fixed connecting block. The cooperation between the fixed connecting block and the L-shaped limiting slide bar is used to ensure the overall balance of the connecting horizontal plate.

[0015] According to the above technical solution, the upper outer surface of the fixed connecting block is fixedly installed with the inner wall of the limiting wall groove that is opened on the inner surface of the heat-sealing box. The fixed connecting block, the L-shaped limiting slide bar and the limiting wall groove are symmetrically distributed with the hydraulic push rod as the central axis of symmetry. The limiting wall groove is used to limit and adjust the moving height of the fixed connecting block.

[0016] According to the above technical solution, the connecting unit includes a fixed base, and side limiting grooves are respectively opened on the outer surfaces of both sides of the fixed base. The upper outer surface of the fixed base is fixedly connected to the lower surface of the connecting cross plate. An I-beam connector is inserted and installed at the lower end of the fixed base. A heat-sealing plate is fixedly connected to the lower end of the I-beam connector. Through the cooperation between the I-beam connector and the heat-sealing plate, the heat-sealing plate can be quickly assembled and easily replaced.

[0017] According to the above technical solution, the pressure roller reset unit includes a hinged support arm. The upper outer surface of the hinged support arm is hinged to the outer surfaces of both ends of the fixed connecting block. A rotating shaft is fixedly connected to the end of the hinged support arm away from the fixed connecting block. A plastic film auxiliary pressure roller is rotatably connected to the outer surface of the rotating shaft. The setting of the plastic film auxiliary pressure roller plays a role in pleating the plastic film, thereby improving the quality of the plastic film heat sealing operation.

[0018] According to the above technical solution, an inner hinged abutment is hinged to the inner surface of the hinged support arm. A limiting slider is hinged to the end of the inner hinged abutment away from the hinged support arm. The inner surface of the limiting slider is slidably connected to the inner wall of the side limiting groove. A return spring is fixedly connected to the bottom surface of the inner cavity of the side limiting groove on the lower outer surface of the limiting slider. The return spring is used to reset the plastic film auxiliary pressure roller, so that the hinged support arm and the plastic film auxiliary pressure roller can be slightly retracted inward to prevent affecting the normal conveying of the plastic film.

[0019] According to the above technical solution, the bidirectional drive unit includes a limiting strip groove plate one and a limiting strip groove plate two. The inner surfaces of the limiting strip groove plate one and the limiting strip groove plate two are respectively provided with auxiliary limiting movable grooves. The lower outer surface of the limiting strip groove plate one is provided with a measuring scale. The upper outer surface of the limiting strip groove plate one is provided with a drive motor mounted on the upper outer surface of the heat sealing box. The output shaft of the drive motor is fixedly connected to a driving bevel gear. The outer surface of the driving bevel gear meshes with a driven bevel gear. The setting of the measuring scale facilitates the intuitive observation of the operator and improves the accuracy of heat sealing and cutting.

[0020] According to the above technical solution, a threaded rod is fixedly connected to the inner surface of the center of the driven meshing bevel gear. The outer surfaces of both ends of the threaded rod are rotatably connected to the inner wall of the first limiting strip groove plate. The outer surface of the threaded rod is threaded with a connecting strip that is slidably connected to the inside of the movable groove. The outer surface of the other end of the connecting strip is slidably connected to the inner wall of the second limiting strip groove plate.

[0021] According to the above technical solution, the cutting unit includes an electric telescopic rod, the upper end of which is fixedly connected to the lower outer surface of the connecting strip, and the output end of the electric telescopic rod is fixedly connected to a plastic film cutting blade. With the telescopic capability of the electric telescopic rod, the height of the plastic film cutting blade can be quickly and conveniently adjusted, resulting in a high degree of automation.

[0022] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0023] 1. This invention, by incorporating a height-adjustable heat-sealing unit, solves the problem in existing heat-sealing mechanisms that struggle to adjust the height of the plastic film heat-sealing mechanism according to the actual thickness of the plastic film. Through the driving cooperation of hydraulic cylinders and hydraulic push rods, the overall height of the connecting cross plate can be adjusted, facilitating the shrinkage of the auxiliary pressure roller of the plastic film. The height can be adjusted according to the thickness of the plastic film, resulting in a high degree of automation and strong practicality. This ensures that the heat-sealing plate can perform precise heat-sealing operations on the plastic film, improving the quality and efficiency of film heat sealing.

[0024] 2. This invention, by incorporating a connecting unit and a pressure roller reset unit, achieves the reset of the plastic film after the pressing operation, avoiding interference with the normal conveying of the plastic film. Through the cooperation between the hinged support arm and the inner hinged abutment rod, the angle between the two, as well as between the hinged support arm and the conveying component, can be adjusted according to the overall degree of pressing down of the connecting cross plate. This ensures that the auxiliary pressure roller effectively presses the plastic film on the surface of the conveying component, facilitating the heat sealing operation of the plastic film raw material, preventing wrinkles from appearing during the heat sealing process, improving the working efficiency and processing quality of the heat sealing mechanism for plastic film processing, and simultaneously not affecting the normal conveying of the plastic film, increasing the overall effectiveness and practicality of the device, and reducing or avoiding the increase in production costs.

[0025] 3. This invention, by incorporating a return spring, with its elastic extension and contraction effect, can drive the limiting slider to slide on the surface of the side limiting groove. The side limiting groove provides a space for the limiting slider and the return spring to retract, ensuring that the plastic film auxiliary pressure roller can gradually return to its original position when the plastic film is not pressed. This facilitates the slight inward retraction of the hinged support arm and the plastic film auxiliary pressure roller, preventing interference with the normal conveying of the plastic film and improving the overall practicality of the device.

[0026] 4. This invention, by incorporating a bidirectional drive unit and a cutting unit, solves the problem that traditional heat-sealing mechanisms for plastic film processing lack auxiliary cutting functions, necessitating secondary cutting operations after heat-sealing the plastic film. Through the coordinated operation of the drive motor, the active bevel gear, and the driven meshing bevel gear, the threaded rod is driven to rotate. Under the action of bidirectional rotation, the connecting strip adjusts the distance between the two sets of plastic film cutting blades. Combined with the telescopic capability of the electric telescopic rod, the height of the plastic film cutting blades can be quickly and conveniently adjusted. This invention achieves a high degree of automation, avoiding manual secondary cutting operations. Furthermore, the inclusion of a measuring scale allows operators to visually observe and measure the distance between the two sets of plastic film cutting blades, improving the accuracy of heat-sealing cutting. Attached Figure Description

[0027] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0028] Figure 1 This is a schematic diagram of the overall frontal three-dimensional structure of the present invention;

[0029] Figure 2 This is a three-dimensional cross-sectional schematic diagram of the present invention;

[0030] Figure 3 This is a three-dimensional schematic diagram of the heat-sealing adjustment mechanism of the present invention;

[0031] Figure 4 This is the invention Figure 3 Enlarged view of point A;

[0032] Figure 5 This is a top view of the three-dimensional cross-section of the limiting strip groove plate of the present invention;

[0033] Figure 6 This is a bottom-view perspective view of the auxiliary film-cutting mechanism of the present invention;

[0034] In the diagram: 1. Heat sealing box; 11. Working platform; 12. Conveying assembly; 2. Heat sealing adjustment mechanism; 3. Auxiliary roller pressing mechanism; 4. Auxiliary film cutting mechanism; 211. Hydraulic cylinder; 212. Hydraulic push rod; 213. Connecting cross plate; 221. Fixed connecting block; 222. L-shaped limiting slide bar; 223. Limiting wall groove; 311. Fixed seat; 312. I-beam connector; 3111. Side limiting slide groove; 313. Heat sealing plate; 321. Hinge arm; 322. Auxiliary pressure roller for plastic film; 323. Inner hinged stop bar; 324. Limiting slider; 325. Return spring; 411a. Limiting strip groove plate one; 411b. Limiting strip groove plate two; 412. Drive motor; 413. Driving bevel gear; 414. Driven meshing bevel gear; 415. Threaded rod; 416. Connecting bar; 421. Electric telescopic rod; 422. Plastic film cutting blade body. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0036] Please see Figure 1-6 The present invention provides a technical solution: a heat-sealing mechanism for processing plastic film that is easy to adjust, comprising a heat-sealing box 1, a working platform 11 fixedly connected to the lower end of the heat-sealing box 1, a conveying assembly 12 provided at the upper end of the working platform 11, a heat-sealing adjustment mechanism 2 provided on the top surface of the inner cavity of the heat-sealing box 1, an auxiliary roller pressing mechanism 3 movably connected to the lower end of the heat-sealing adjustment mechanism 2, and an auxiliary film cutting mechanism 4 installed on the top surface of the inner cavity of the heat-sealing box 1 on one side of the heat-sealing adjustment mechanism 2; the heat-sealing adjustment mechanism 2 includes a height-adjusting heat-sealing unit and a limiting unit, the limiting unit being located at the output end of the height-adjusting heat-sealing unit and fixedly connected thereto; the auxiliary roller pressing mechanism 3 includes a connecting unit and a pressure roller reset unit, the connecting unit and the pressure roller reset unit being hinged to each other; the auxiliary film cutting mechanism 4 includes a bidirectional driving unit and a cutting unit, one end of the cutting unit being connected to the outer surface of the output end of the bidirectional driving unit;

[0037] The height-adjustable heat-sealing unit includes a hydraulic cylinder 211, which is mounted on the upper outer surface of the heat-sealing box 1 and fixedly connected thereto. A hydraulic push rod 212 is fixedly mounted on the output shaft of the hydraulic cylinder 211, and a connecting horizontal plate 213 is fixedly connected to the output end of the hydraulic push rod 212. Through the driving cooperation of the hydraulic cylinder 211 and the hydraulic push rod 212, the overall height of the connecting horizontal plate 213 can be adjusted.

[0038] The limiting unit includes a fixed connecting block 221. The upper outer surface of the fixed connecting block 221 is fixedly connected to the output end of the hydraulic push rod 212. Fixed connecting blocks 221 are fixedly installed on the outer surfaces of both ends of the fixed connecting block 221.

[0039] The upper outer surface of the fixed connecting block 221 is fixedly installed with the inner wall of the limiting wall groove 223, which is slidably connected to the inner surface of the heat sealing box 1. The fixed connecting block 221, the L-shaped limiting slide strip 222 and the limiting wall groove 223 are symmetrically distributed about the hydraulic push rod 212 as the central axis of symmetry. Through the driving cooperation of the hydraulic cylinder 211 and the hydraulic push rod 212, the overall height of the connecting cross plate 213 can be adjusted, which facilitates the shrinkage of the plastic film auxiliary pressure roller 322. The height can be adjusted according to the thickness of the plastic film. It has a high degree of automation and strong practicality, ensuring that the heat sealing plate 313 can perform precise heat sealing operation on the plastic film, and improving the quality and efficiency of film heat sealing.

[0040] The connecting unit includes a fixed base 311. Side limiting grooves 3111 are respectively opened on the outer surfaces of both sides of the fixed base 311. The upper outer surface of the fixed base 311 is fixedly connected to the lower surface of the connecting cross plate 213. An I-beam connector 312 is inserted and installed at the lower end of the fixed base 311. A heat sealing plate 313 is fixedly connected to the lower end of the I-beam connector 312. Through the cooperation between the fixed base 311, the I-beam connector 312 and the heat sealing plate 313, the heat sealing plate 313 can be quickly assembled, which is convenient for daily maintenance and replacement.

[0041] The pressure roller reset unit includes a hinged support arm 321. The upper outer surface of the hinged support arm 321 is hinged to the outer surfaces of both ends of the fixed connecting block 221. A rotating shaft is fixedly connected to the end of the hinged support arm 321 away from the fixed connecting block 221. A plastic film auxiliary pressure roller 322 is rotatably connected to the outer surface of the rotating shaft.

[0042] An inner hinged abutment 323 is hinged to the inner surface of the hinged arm 321. A limit slider 324 is hinged to the end of the inner hinged abutment 323 away from the hinged arm 321. The inner surface of the limit slider 324 is slidably connected to the inner wall of the side limit groove 3111. A return spring 325 is fixedly connected to the lower outer surface of the limit slider 324 and fixedly connected to the bottom surface of the inner cavity of the side limit groove 3111. Through the cooperation between the hinged arm 321 and the inner hinged abutment 323, the overall pressure of the connecting cross plate 213 can be adjusted between the two, as well as between the hinged arm 321 and the conveyor assembly. The angle between components 12 is adjusted to ensure that the plastic film auxiliary pressure roller 322 effectively presses the plastic film on the surface of the conveying component 12, facilitating the addition of plastic film raw materials, preventing wrinkles in the plastic film during heat sealing, improving the working efficiency and processing quality of the heat sealing mechanism for plastic film processing, and ensuring that the plastic film auxiliary pressure roller 322 can gradually return to its original position when the plastic film is not pressed, making it easy to slightly retract the hinged support arm 321 and the plastic film auxiliary pressure roller 322 inward to prevent affecting the normal conveying of the plastic film and improve the overall practicality of the device;

[0043] The bidirectional drive unit includes a limiting strip plate 411a and a limiting strip plate 411b. The inner surfaces of the limiting strip plate 411a and the limiting strip plate 411b are respectively provided with auxiliary limiting movable grooves. The lower outer surface of the limiting strip plate 411a is provided with a measuring scale. The upper outer surface of the limiting strip plate 411a is provided with a drive motor 412 mounted on the upper outer surface of the heat sealing box 1. The output shaft of the drive motor 412 is fixedly connected to a driving bevel gear 413. The outer surface of the driving bevel gear 413 is meshed with a driven bevel gear 414.

[0044] A threaded rod 415 is fixedly connected to the inner surface of the center of the driven meshing bevel gear 414. The outer surfaces of both ends of the threaded rod 415 are rotatably connected to the inner wall of the limiting strip groove 411a. The outer surfaces of the threaded rod 415 are threadedly connected to the connecting strip 416, which is slidably connected to the inside of the movable groove. The outer surface of the other end of the connecting strip 416 is slidably connected to the inner wall of the limiting strip groove 411b. Through the cooperation of the drive motor 412, the driving bevel gear 413 and the driven meshing bevel gear 414, the threaded rod 415 can be driven to rotate. Under the action of bidirectional rotation, the connecting strip 416 drives the distance between the two sets of plastic film cutting blades 422 to be adjusted.

[0045] The cutting unit includes an electric telescopic rod 421. The upper end of the electric telescopic rod 421 is fixedly connected to the lower outer surface of the connecting strip 416. The output end of the electric telescopic rod 421 is fixedly connected to a plastic film cutting blade 422. With the telescopic capability of the electric telescopic rod 421, the height of the plastic film cutting blade 422 can be quickly and conveniently adjusted. The unit is highly automated, avoiding manual secondary cutting operations. With the setting of the measuring scale, it is easy for the operator to observe and measure the distance between the two sets of plastic film cutting blades 422, thus improving the accuracy of heat sealing cutting.

[0046] The working principle of this easily adjustable heat-sealing mechanism for plastic film processing will be explained in detail below.

[0047] like Figure 1-6 As shown, during operation, firstly, the entire equipment is connected to an external power supply and started. The control conveyor assembly 12 is activated to convey the plastic film to be processed. When the plastic film is conveyed to the position directly below the heat-sealing adjustment mechanism 2, the control hydraulic cylinder 211 is activated, causing the hydraulic push rod 212 to extend and retract, causing the connecting horizontal plate 213 to move downwards. At this time, the L-shaped limit slide 222 slides on the inner wall of the limit groove 223 to ensure the overall balance of the connecting horizontal plate 213. When the plastic film auxiliary pressure roller 322 gradually contacts the surface of the plastic film, the hydraulic push rod 212 continues to extend downwards. The two sets of plastic film auxiliary pressure rollers 322 pleat the surface of the plastic film, making the film smoother. The hydraulic cylinder 211 and the conveyor assembly 12 are started and stopped, and the heat-sealing plate 313 contacts the middle part of the film for rapid heat sealing. After heat sealing is completed, the hydraulic cylinder 211 and the conveyor assembly 12 are restarted. The heat-sealed plastic film continues to be conveyed. The return spring 325 lifts the limit slider 324, causing the surface of the plastic film auxiliary pressure roller 322 to disengage from the conveying assembly 12. After the new plastic film arrives at the heat-sealing position, the above operation is repeated. Then, after the heat-sealed plastic film is conveyed to the underside of the auxiliary film cutting mechanism 4, the conveying assembly 12 is started and stopped, and the drive motor 412 is turned on, so that the active bevel gear 413 and the driven meshing bevel gear 414 mesh, and the threaded rod 415 rotates in both directions. The operator observes the position of the two connecting bars 416 by measuring the scale and measures the distance between the two plastic film cutting blades 422. After reaching the appropriate position, the drive motor 412 is started and stopped, and the electric telescopic rod 421 is driven, so that the plastic film cutting blades 422 can accurately cut the plastic film without the need for manual secondary operation. Finally, the cut plastic film is conveyed to the subsequent processing position by the conveying assembly 12.

[0048] 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 process, method, article, or apparatus.

[0049] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heat sealing mechanism for plastic film processing with easy adjustment, comprising a heat sealing box (1), characterized in that: The lower end of the heat sealing box (1) is fixedly connected to a working platform (11), the upper end of the working platform (11) is provided with a conveying component (12), the top surface of the inner cavity of the heat sealing box (1) is provided with a heat sealing adjustment mechanism (2), the lower end of the heat sealing adjustment mechanism (2) is movably connected to an auxiliary roller pressing mechanism (3), and an auxiliary film cutting mechanism (4) installed on the top surface of the inner cavity of the heat sealing box (1) is provided on one side of the heat sealing adjustment mechanism (2). The heat sealing adjustment mechanism (2) includes a height adjustment heat sealing unit and a limiting unit. The limiting unit is located at the output end of the height adjustment heat sealing unit and is fixedly connected to it. The auxiliary roller pressing mechanism (3) includes a connecting unit and a roller reset unit, which are hinged to each other. The auxiliary film cutting mechanism (4) includes a bidirectional drive unit and a cutting unit, one end of which is connected to the outer surface of the output end of the bidirectional drive unit.

2. A heat sealing mechanism for plastic film processing with easy adjustment as claimed in claim 1, wherein: The height-adjustable heat-sealing unit includes a hydraulic cylinder (211), which is mounted on the upper outer surface of the heat-sealing box (1) and fixedly connected thereto. A hydraulic push rod (212) is fixedly mounted on the output shaft of the hydraulic cylinder (211), and a connecting cross plate (213) is fixedly connected to the output end of the hydraulic push rod (212).

3. A heat sealing mechanism for plastic film processing with easy adjustment as claimed in claim 1, wherein: The limiting unit includes a fixed connecting block (221), the upper outer surface of the fixed connecting block (221) is fixedly connected to the output end of the hydraulic push rod (212), and fixed connecting blocks (221) are respectively fixedly installed on the outer surfaces of the two ends of the fixed connecting block (221).

4. The heat-sealing mechanism for processing plastic film that is easy to adjust according to claim 3, characterized in that: The upper outer surface of the fixed connecting block (221) is fixedly installed with the inner wall of the limiting wall groove (223) which is opened on the inner surface of the heat-sealing box (1) for auxiliary limiting. The fixed connecting block (221), the L-shaped limiting slide (222) and the limiting wall groove (223) are all symmetrically distributed with the hydraulic push rod (212) as the central axis of symmetry.

5. The heat-sealing mechanism for processing plastic film that is easy to adjust according to claim 1, characterized in that: The connecting unit includes a fixed base (311), and side limiting grooves (3111) are respectively opened on the outer surfaces of both sides of the fixed base (311). The upper outer surface of the fixed base (311) is fixedly connected to the lower surface of the connecting cross plate (213). An I-beam connector (312) is inserted and installed at the lower end of the fixed base (311), and a heat-sealing plate (313) is fixedly connected to the lower end of the I-beam connector (312).

6. The heat-sealing mechanism for processing plastic film that is easy to adjust according to claim 1, characterized in that: The pressure roller reset unit includes a hinged support arm (321), the upper outer surface of the hinged support arm (321) is hinged to the outer surfaces of both ends of the fixed connecting block (221), and a rotating shaft is fixedly connected to the end of the hinged support arm (321) away from the fixed connecting block (221). A plastic film auxiliary pressure roller (322) is rotatably connected to the outer surface of the rotating shaft.

7. The heat-sealing mechanism for processing plastic film that is easy to adjust according to claim 6, characterized in that: The inner surface of the hinged arm (321) is hinged with an inner hinged abutment (323). The end of the inner hinged abutment (323) away from the hinged arm (321) is hinged with a limiting slider (324). The inner surface of the limiting slider (324) is slidably connected to the inner wall of the side limiting groove (3111). The lower outer surface of the limiting slider (324) is fixedly connected with a return spring (325) which is fixedly connected to the bottom surface of the inner cavity of the side limiting groove (3111).

8. The heat-sealing mechanism for processing plastic film that is easy to adjust according to claim 1, characterized in that: The bidirectional drive unit includes a limiting strip plate one (411a) and a limiting strip plate two (411b). The inner surfaces of the limiting strip plate one (411a) and the limiting strip plate two (411b) are respectively provided with auxiliary limiting movable grooves. The lower outer surface of the limiting strip plate one (411a) is provided with a measuring scale. The upper outer surface of the limiting strip plate one (411a) is provided with a drive motor (412) mounted on the upper outer surface of the heat sealing box (1). The output shaft of the drive motor (412) is fixedly connected with a driving bevel gear (413). The outer surface of the driving bevel gear (413) is meshed with a driven bevel gear (414).

9. The heat-sealing mechanism for processing plastic film that is easy to adjust according to claim 8, characterized in that: A threaded rod (415) is fixedly connected to the inner surface of the center of the driven meshing bevel gear (414). The outer surfaces of both ends of the threaded rod (415) are rotatably connected to the inner wall of the first limiting strip groove plate (411a). The outer surfaces of the threaded rod (415) are threadedly connected to a connecting strip (416) that is slidably connected to the inside of the movable groove. The outer surface of the other end of the connecting strip (416) is slidably connected to the inner wall of the second limiting strip groove plate (411b).

10. The heat-sealing mechanism for processing plastic film that is easy to adjust according to claim 1, characterized in that: The cutting unit includes an electric telescopic rod (421), the upper end of which is fixedly connected to the lower outer surface of the connecting strip (416), and the output end of the electric telescopic rod (421) is fixedly connected to a plastic film cutting blade (422).

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