Packaging film folding mechanism and sealing machine

Abstract

The utility model relates to a packaging film folding mechanism and a sealing machine. The packaging film folding mechanism comprises a mounting base, a film rolling assembly, a conveying roller assembly, a first folding plate and a second folding plate. The film rolling assembly is fixed on the mounting base; the conveying roller assembly is integrally arranged on the mounting base in a broken line shape; the first folded plate and the second folded plate are arranged at one end of the mounting base in parallel, the width of the first folded plate is far larger than that of the second folded plate, the direction of the bevel edge of the first folded plate is opposite to that of the bevel edge of the second folded plate, and the first folded plate and the second folded plate are used for folding a single-layer packaging film into double layers. According to the scheme, the single-layer packaging film can be folded into the double-layer film, the double-layer film can be matched with a double-layer film sealing machine for outer packaging of a packaging container without specially purchasing the double-layer film, the film purchasing cost is greatly reduced, then the production cost is reduced, and the double-layer film folding device is simple and compact in structure, convenient to install and small in occupied space.

Description

Technical Field

[0001] The utility model relates to the technical field of film folding, in particular to a packaging film folding mechanism and a sealing machine. Background Art

[0002] Packaging film primarily refers to films used for packaging items, such as common plastic films. With increasing demands for product packaging, more and more packaging containers are now covered with a layer of plastic film. By covering the outer surface of packaging containers (such as boxes, bottles, and cans) with transparent plastic film, packaging films can protect products, prevent dust and dirt, clearly display product appearance, and improve packaging stability, water resistance, moisture resistance, and gas barrier properties. These functions have led to the widespread use of packaging films in the modern packaging industry.

[0003] When laminating the outer surface of a packaging container, the packaging container is generally placed in the center area of ​​a plastic film, and then the opening of the plastic film is sealed. Currently, commercially available plastic films include single-layer films and double-layer films. When using single-layer films, the packaging container needs to be placed between two independent single-layer films, and then three sides are sealed. When using double-layer films, only two sides need to be sealed, which effectively reduces the number of sealing and cutting components, reduces costs, and makes the packaged product more beautiful. However, because double-layer packaging films (hereinafter referred to as double-layer films) require more production steps than single-layer packaging films (hereinafter referred to as single-layer films), the price of commercially available double-layer films is much higher than that of single-layer films, which is not conducive to cost reduction for companies.

[0004] Therefore, there is an urgent need for a packaging film folding mechanism and sealing machine that can fold a single-layer film into a double-layer film. There is no need to specifically purchase a double-layer film and match it with a double-layer film sealing machine for outer packaging of packaging containers, which greatly reduces the cost of purchasing film and thus reduces production costs. It has a simple and compact structure, is easy to install, and takes up little space. Utility Model Content

[0005] In order to overcome the problems existing in the related technology, the present application provides a packaging film folding mechanism and a sealing machine. The packaging film folding mechanism and the sealing machine can fold a single-layer film into a double-layer film. There is no need to specifically purchase a double-layer film to match the double-layer film sealing machine for the outer packaging of the packaging container, which greatly reduces the cost of purchasing the film and thus reduces the production cost. The structure is simple and compact, easy to install, and occupies little space.

[0006] The first aspect of the present application is to provide a packaging film folding mechanism, comprising a mounting base, a film roll assembly, a conveying roller assembly, a first folding plate and a second folding plate; the film roll assembly is fixed on the mounting base for providing packaging film; the conveying roller assembly is arranged on the mounting base in a broken line shape as a whole, for conveying the packaging film on the film roll assembly to the first folding plate; the first folding plate and the second folding plate are arranged in parallel at one end of the mounting base, and the width of the first folding plate is much larger than the width of the second folding plate, and the oblique side direction of the first folding plate is opposite to the oblique side direction of the second folding plate, for folding a single layer of packaging film into a double layer.

[0007] In a preferred technical solution of the present application, the first folding plate is in the shape of a right-angled trapezoid as a whole, including a first folding edge and a second folding edge; the first folding edge is located at the top end of the first folding plate and is parallel to the conveying roller assembly; the second folding edge is a beveled edge, which is used to turn and fold the packaging film.

[0008] In a preferred technical solution of the present application, the second folding plate is in the shape of a right triangle as a whole, and includes a third folding edge; the third folding edge is a hypotenuse, and the third folding edge is opposite to the first folding edge of the first folding plate.

[0009] In a preferred technical solution of the present application, the roll film assembly includes a roll film, a roll film mounting shaft and a fixed seat; the roll film is sleeved on the roll film mounting shaft; both ends of the roll film mounting shaft are rotatably fixed on the fixed seat; the fixed seat is arranged on the mounting base and is fixedly connected to the mounting base.

[0010] In a preferred technical solution of the present application, the conveying roller assembly includes a first rubber roller, a second rubber roller, a third rubber roller, a fourth rubber roller and a fifth rubber roller; the first rubber roller is arranged on one side of the film roll assembly; the second rubber roller and the third rubber roller are arranged parallel and symmetrically beside the first rubber roller; the fourth rubber roller is arranged obliquely below the third rubber roller and is located beside the first folding plate; the fifth rubber roller is arranged beside the bottom end of the second folding plate.

[0011] In the preferred technical solution of the present application, a film adsorption component is also included; the film adsorption component is arranged between the second rubber roller and the third rubber roller, and the top surface of the film adsorption component is parallel to the packaging film located between the second rubber roller and the third rubber roller.

[0012] In a preferred technical solution of the present application, the film adsorption assembly includes an adsorption plate; the adsorption plate is located directly below the packaging film, and a strip groove is provided on the adsorption plate, and the extension direction of the strip groove is parallel to the length direction of the adsorption plate.

[0013] In the preferable technical solution of the present application, the film winding assembly comprises a first film winding assembly and a second film winding assembly; the first film winding assembly and the second film winding assembly are arranged in parallel on the mounting base.

[0014] In the preferable technical solution of the present application, the adjusting hand wheel comprises an adjusting handle and a screw rod; the adjusting hand wheel is connected with the screw rod; the screw rod is connected with the film winding assembly, and is used for adjusting the relative position of the film winding assembly and the mounting base.

[0015] The second aspect of the present application provides a sealing machine comprising the above packaging film folding mechanism.

[0016] The technical solution provided by the present application has the following beneficial effects: the packaging film folding mechanism provided by the present application comprises a mounting base, a film winding assembly, a conveying roller assembly, a first folding plate and a second folding plate. The first folding plate and the second folding plate are arranged in parallel at one end of the mounting base, and a gap is arranged between the first folding plate and the second folding plate, so that the packaging film can be moved to the gap between the first folding plate and the second folding plate under the conveying of the conveying roller assembly. The first folding edge and the second folding edge are arranged on the first folding plate, the third folding edge is arranged on the second folding plate, and the second folding edge and the third folding edge are opposite to each other, so that a part of the packaging film can be folded into a first layer of film under the folding of the first folding edge. At the same time, another part of the packaging film is folded into a second layer of film which is parallel to and overlaps with the first layer of film under the folding of the second folding edge and the third folding edge. Compared with the problem of high cost caused by the need to purchase double-layer film, the solution provided by the present application can fold a single-layer film into a double-layer film, so that a double-layer film sealing machine can be matched for the outer packaging of a packaging container without the need to specially purchase a double-layer film, thereby greatly reducing the film purchase cost and the production cost. In addition, the structure is simple, compact, easy to install and occupies small space.

[0017] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which like reference characters refer to like parts throughout the several views, and in which the exemplary embodiment of the present application is shown.

[0019] Figure 1 is a structural schematic view of the packaging film folding mechanism (including film) shown in the embodiment of the present application;

[0020] Figure 21 is another structural schematic diagram of the packaging film folding mechanism (including film) shown in an embodiment of the present application;

[0021] Figure 3 Schematic diagram of the structure of the packaging film folding mechanism (without film) shown in an embodiment of the present application;

[0022] Figure 4 This is another structural schematic diagram of the packaging film folding mechanism (without film) in Example 2 of the present application.

[0023] Description of reference numerals:

[0024] 1. Mounting base; 11. First mounting base; 12. Second mounting base; 2. Film roll assembly; 21. Film roll; 22. Film roll mounting shaft; 23. Fixed seat; 231. Mounting block; 232. Limit block; 31. First rubber roller; 32. Second rubber roller; 33. Third rubber roller; 34. Fourth rubber roller; 35. Fifth rubber roller; 4. First folding plate; 41. First folding edge; 42. Second folding edge; 5. Second folding plate; 51. Third folding edge; 6. Film adsorption assembly; 61. Adsorption plate; 62. Strip groove; 7. Adjustment hand wheel; 8. Packaging film. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Instead, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0026] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. As used in this application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0027] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] Currently, commercially available plastic films include single-layer and double-layer films. With single-layer films, the packaging container must be placed between two separate single-layer films, followed by a three-side seal. With double-layer films, only two sides need to be sealed, effectively reducing the number of sealing and cutting components, lowering costs, and providing a more aesthetically pleasing packaged product. However, because double-layer films require more manufacturing steps than single-layer films, commercially available double-layer films are significantly more expensive than single-layer films, hindering cost reduction for manufacturers.

[0029] In response to the above problems, the embodiments of the present application provide a packaging film folding mechanism and a sealing machine, which can fold a single-layer film into a double-layer film. There is no need to specifically purchase a double-layer film, and the double-layer film sealing machine can be matched for the outer packaging of the packaging container, which greatly reduces the cost of purchasing the film and thus reduces the production cost. It has a simple and compact structure, is easy to install, and takes up little space.

[0030] The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0031] Example 1

[0032] See also Figures 1-4 The packaging film folding mechanism of the present application includes a mounting base 1, a film roll assembly 2, a conveying roller assembly, a first folding plate 4 and a second folding plate 5. The film roll assembly 2 is fixed on the mounting base 1 and is used to provide a packaging film 8; the conveying roller assembly is arranged on the mounting base 1 in a broken line shape as a whole, and is used to convey the packaging film 8 on the film roll assembly 2 to the first folding plate 4; the first folding plate 4 and the second folding plate 5 are arranged parallel to one end of the mounting base 1, and are used to fold a single layer of packaging film into a double layer.

[0033] Specifically, the mounting base 1 comprises a first mounting base 11 and a second mounting base 12. The second mounting base 12 is positioned above the first mounting base 11 and is used to secure the film roll assembly 2. To enhance the strength of the entire film folding mechanism, the first and second mounting bases 11, 12 are constructed of stainless steel or aluminum alloy. To facilitate movement of the film folding mechanism, universal wheels are provided at the bottom of the first mounting base 11.

[0034] The first and second folding plates 4 and 5 are vertically mounted on the first mounting base 11, with a gap between them. Specifically, the width of the first folding plate 4 is much greater than that of the second folding plate 5, and the hypotenuse of the first folding plate 4 is oriented in the opposite direction to the hypotenuse of the second folding plate, i.e., the hypotenuses of the first and second folding plates form an inverted V-shape. More specifically, the first folding plate 4 is in the shape of a right trapezoid, including a first folding edge 41 and a second folding edge 42. The first folding edge 41 is located at the top of the first folding plate 4 and is parallel to the conveyor roller assembly, i.e., the first folding edge 41 forms the upper base of the right trapezoid. The second folding edge 42 is a hypotenuse and is used to fold the packaging film 8. The second folding plate 5 is in the shape of a right triangle, including a third folding edge 51. The third folding edge 51 is a hypotenuse and faces the first folding edge 41 of the first folding plate 4, and is used to fold the packaging film 8 again after it has been folded by the second folding edge 42.

[0035] When the packaging film 8 contacts the second folding edge 42, the second folding edge 42 folds the packaging film 8 in contact therewith between the first folding plate 4 and the second folding plate 5. During this process, the conveying direction of the portion of the packaging film 8 in contact with the oblique edge is changed from upward to rightward. This portion of the packaging film then contacts the third folding edge 51, and the conveying direction of the packaging film is changed from rightward to downward by the third folding edge 51.

[0036] like Figures 1-2 As shown, the film roll assembly 2 includes a film roll 21, a film roll mounting shaft 22, and a fixing seat 23. The film roll 21 is sleeved on the film roll mounting shaft 22. Both ends of the film roll mounting shaft 22 are rotatably fixed to the fixing seat 23. The fixing seat 23 is arranged on the mounting base 1 and is fixedly connected to the mounting base 1. Specifically, the film roll 21 is a roll of packaging film 8 in a rolled-up state. The fixing seat 23 includes a mounting block 231 and a limiting block 232. The mounting block 231 is L-shaped as a whole and is fixed to the second mounting base 12 by screws. An arc-shaped opening is provided at the center of the top of the mounting block 231, and the film roll mounting shaft 22 is placed in the arc-shaped opening. The limiting block 232 is arranged at the top of the mounting block 231 and is generally in an inverted U shape, used to limit the film roll mounting shaft 22 at the arc-shaped opening.

[0037] Furthermore, to improve the efficiency of replacing the film roll 21, the film roll assembly 2 includes a first film roll assembly and a second film roll assembly, which are arranged parallel to the mounting base 1. When the packaging film on the first film roll assembly is used up, the packaging film of the second film roll assembly can be directly used without stopping the machine to replace the film roll 21, effectively improving efficiency. Furthermore, to prevent the position of the film roll 21 from shifting and affecting the subsequent film folding operation, the packaging film folding mechanism also includes an adjustment handwheel 7. The adjustment handwheel 7 includes an adjustment handle and a screw. The adjustment handwheel 7 is connected to the screw, and the screw is connected to the film roll assembly 2 for adjusting the relative position of the film roll assembly 2 and the mounting base 1. If the position of the roll film 21 is offset, it is only necessary to rotate the adjustment handle clockwise or counterclockwise to drive the screw rod to move, and then drive the second mounting base 12 to move, thereby adjusting the relative position of the roll film 21 and the first mounting base 11, so that the roll film 21 can be more accurately aligned with the first folding plate 4 and the second folding plate 5, thereby effectively improving the folding neatness.

[0038] like Figure 4 As shown, the conveying roller assembly includes a first rubber roller 31, a second rubber roller 32, a third rubber roller 33, a fourth rubber roller 34, and a fifth rubber roller 35. The first rubber roller 31, the second rubber roller 32, the third rubber roller 33, the fourth rubber roller 34, and the fifth rubber roller 35 are arranged sequentially along the conveying direction of the packaging film 8. Specifically, the first rubber roller 31 is positioned on one side of the film roll assembly 2 and is used to convey the unwound packaging film 8 to the second rubber roller 32. The second rubber roller 32 and the third rubber roller 33 are arranged parallel and symmetrically to the sides of the first rubber roller 31, so that the packaging film 8 between the second rubber roller 32 and the third rubber roller 33 forms a flat surface. The fourth rubber roller 34 is positioned obliquely below the third rubber roller 33 and to the side of the first folding plate 4. When the packaging film 8 passes the third rubber roller 33 and reaches the fourth rubber roller 34, the packaging film 8 bypasses the bottom end of the fourth rubber roller 34 and reaches the first folding edge 41 and the second folding edge 42 of the first folding plate 4. The fifth rubber roller 35 is arranged beside the bottom end of the second folding plate 5. When the packaging film 8 moves downward from the top end of the second folding plate 5, it bypasses the bottom end of the fifth rubber roller 35 and is then transferred to the next processing station.

[0039] Further, in order to make the packaging film 8 more flat when it is conveyed between the second rubber roller 32 and the third rubber roller 33, the packaging film folding mechanism further comprises a film suction assembly 6, which is arranged between the second rubber roller 32 and the third rubber roller 33 and the top surface of the film suction assembly 6 is parallel to the packaging film 8 between the second rubber roller 32 and the third rubber roller 33. Specifically, the film suction assembly 6 comprises a suction plate 61, which is located directly below the packaging film 8 and in contact with the packaging film 8. The suction plate 61 is provided with a strip-shaped groove 62, and the extension direction of the strip-shaped groove 62 is parallel to the length direction of the suction plate 61.

[0040] Principle of folding single-layer film into double-layer film:

[0041] When the packaging film folding mechanism is started, the film winding shaft 22 rotates so that the film 21 is wound and unwound. The unwound packaging film 8 reaches the second rubber roller 32 from the bottom end of the first rubber roller 31, then passes through the top end of the second rubber roller 32 to the third rubber roller 33, and then moves upward from the bottom end of the third rubber roller 33 to the top end of the first folding plate 4 and contacts the first folding edge 41 and the second folding edge 42 of the first folding plate 4. Then, a part of the packaging film 8 is folded by the first folding edge 41 and directly passes through the second folding plate 5 from above to reach the fifth rubber roller 35 and continue to convey to the next station from the bottom end of the fifth rubber roller 35. At the same time, another part of the packaging film 8 is folded by the second folding edge 42 to the space between the first folding plate 4 and the second folding plate 5. In this process, the conveying direction of this part of the packaging film 8 changes from upward to right, then contacts the third folding edge 51 of the second folding plate 5, and changes the conveying direction of the packaging film from right to downward through the third folding edge 51, and then passes through the bottom end of the fifth rubber roller 35 and conveys to the next station. It should be noted that a part of the packaging film passes through the top of the first folding plate 4 and the second folding plate 5 and is wound to the bottom end of the fifth rubber roller 35 to form the first layer of film; another part of the packaging film is folded by the second folding edge 42 and the third folding edge 51 and is also wound from the top end of the second folding plate 5 to the bottom end of the fifth rubber roller 35 to form the second layer of film, so that the first layer of film and the second layer of film can overlap at the fifth rubber roller 35 to form a double-layer film, thereby completing the conversion of single-layer film to double-layer film.

[0042] In the first embodiment, the packaging film folding mechanism provided by the present application includes a mounting base, a film roll assembly, a conveyor roller assembly, a first folding plate, and a second folding plate. By arranging the first folding plate and the second folding plate in parallel at one end of the mounting base and providing a gap between the first folding plate and the second folding plate, the packaging film can be moved between the first folding plate and the second folding plate under the conveyance of the conveyor roller assembly. By providing a first folding edge and a second folding edge on the first folding plate and a third folding edge on the second folding plate, with the second folding edge and the third folding edge being similar and opposite, a portion of the packaging film can be folded by the first folding edge to form a first layer of film, while another portion of the packaging film can be folded by the second folding edge and the third folding edge to form a second layer of film parallel to and overlapping the first layer of film. Compared to the problem of high cost of purchasing a double-layer film, the solution provided by the present application can fold a single layer of film into a double-layer film. This solution can be used with a double-layer film sealing machine for outer packaging of packaging containers without the need to purchase a special double-layer film, significantly reducing the cost of purchasing film, and thus reducing production costs. The solution also has a simple and compact structure, is easy to install, and occupies little space.

[0043] Example 2

[0044] Corresponding to the above packaging film folding mechanism, this application also provides a sealing machine, please refer to Figures 1-4 , specifically:

[0045] Based on the structure of the above-mentioned embodiment 1, the sealing machine provided in embodiment 2 of the present application includes the above-mentioned packaging film folding mechanism.

[0046] The specific structure of the packaging film folding mechanism is detailed in the above embodiment 1 and will not be repeated here.

[0047] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0048] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0049] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A packaging film folding mechanism, characterized in that: It comprises a mounting base (1), a film roll assembly (2), a conveying roller assembly, a first folding plate (4) and a second folding plate (5); The film roll assembly (2) is fixed on the mounting base (1) and is used to provide a packaging film (8); The conveying roller assembly is arranged on the mounting base (1) in a folded line shape as a whole, and is used to convey the packaging film (8) on the film roll assembly (2) to the first folding plate (4); The first folding plate (4) and the second folding plate (5) are arranged in parallel at one end of the mounting base (1), and the width of the first folding plate (4) is much greater than the width of the second folding plate (5), and the oblique direction of the first folding plate (4) is opposite to the oblique direction of the second folding plate, and are used to fold a single-layer packaging film (8) into a double layer.

2. The packaging film folding mechanism according to claim 1, characterized in that: The first folding plate (4) is in the shape of a right-angled trapezoid as a whole, and comprises a first folding edge (41) and a second folding edge (42); The first folding edge (41) is located at the top end of the first folding plate (4) and is parallel to the conveying roller assembly; The second folding edge (42) is a beveled edge, used for turning and folding the packaging film (8).

3. The packaging film folding mechanism according to claim 2, characterized in that: The second folding plate (5) is in the shape of a right triangle as a whole and includes a third folding edge (51); The third folding edge (51) is a hypotenuse, and the third folding edge (51) is directly opposite to the first folding edge (41) of the first folding plate (4).

4. The packaging film folding mechanism according to claim 1, characterized in that: The film roll assembly (2) comprises a film roll (21), a film roll mounting shaft (22) and a fixing seat (23); The roll film (21) is sleeved on the roll film mounting shaft (22); Both ends of the film roll mounting shaft (22) are rotatably fixed on the fixing seat (23); The fixing seat (23) is arranged on the mounting base (1) and is fixedly connected to the mounting base (1).

5. The packaging film folding mechanism according to claim 1, characterized in that: The conveying roller assembly comprises a first rubber roller (31), a second rubber roller (32), a third rubber roller (33), a fourth rubber roller (34) and a fifth rubber roller (35); The first rubber roller (31) is arranged on one side of the film roll assembly (2); The second rubber roller (32) and the third rubber roller (33) are arranged parallel and symmetrically beside the first rubber roller (31); The fourth rubber roller (34) is arranged obliquely below the third rubber roller (33) and is located beside the first folding plate (4); The fifth rubber roller (35) is arranged beside the bottom end of the second folding plate (5).

6. The packaging film folding mechanism according to claim 5, characterized in that: Also included is a thin film adsorption component (6); The film adsorption component (6) is arranged between the second rubber roller (32) and the third rubber roller (33), and the top surface of the film adsorption component (6) is parallel to the packaging film (8) located between the second rubber roller (32) and the third rubber roller (33).

7. The packaging film folding mechanism according to claim 6, characterized in that: The film adsorption assembly (6) includes an adsorption plate (61); The adsorption plate (61) is located directly below the packaging film (8), and a strip groove (62) is provided on the adsorption plate (61), and the extension direction of the strip groove (62) is parallel to the length direction of the adsorption plate (61).

8. The packaging film folding mechanism according to claim 1, characterized in that: The film roll assembly (2) comprises a first film roll assembly and a second film roll assembly; The first film roll assembly and the second film roll assembly are arranged in parallel on the mounting base (1).

9. The packaging film folding mechanism according to claim 1, characterized in that: Also includes an adjusting hand wheel (7); The adjusting hand wheel (7) comprises an adjusting handle and a screw rod; The adjusting hand wheel (7) is connected to the screw rod; The screw rod is connected to the film roll assembly (2) and is used to adjust the relative position of the film roll assembly (2) and the mounting base (1).

10. A sealing machine, characterized in that: The packaging film folding mechanism comprises the packaging film folding mechanism according to any one of claims 1 to 9.

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