Continuous conveying device for packaging film for realizing synchronous pressing of elastic edge

Abstract

The present invention relates to the technical field of packaging film production, and in particular to a packaging film continuous conveying device for realizing synchronous pressing of elastic edges, comprising: a workbench; an unwinding mechanism comprising a film unwinding assembly and an elastic band unwinding assembly; two folding plates are arranged on both sides of the workbench along the conveying direction; at least one flip plate is arranged along the conveying direction, and the front edge of the flip plate is an arc-shaped surface convex outward, and the flip plate is folded upward and protrudes from the table surface of the workbench; the welding edge assembly comprises a rotating shaft, and two welding edge wheels are arranged at both ends of the rotating shaft, and the two welding edge wheels are respectively arranged corresponding to the two folding plates. By rotating the flip plate to a desired angle, the middle part of the film is lifted upward, the folding distance on both sides of the film is controlled, and the consistency of the welding edge spacing is effectively ensured, and the edge of the folding edge is clamped and pressed by the welding edge wheel, which is helpful to melt the folding edge, and the film and the elastic band are firmly pressed together to achieve high-quality welding.

Description

Technical Field

[0001] The invention relates to the technical field of packaging film production, and in particular to a packaging film continuous conveying device for realizing synchronous edge pressing of elastic edges. Background Art

[0002] In the production line of elastic edge of packaging film, encapsulating the elastic band into the fold of packaging film is the key to ensure the shrinkage of the packaging film. However, due to the constant distance between the two folding parts, when the film width is wide, the excess width of the film will be folded on both sides, resulting in a waste of film width. In addition, during the welding process of the folded edge by the welding wheel, the excess folded part will increase the welding thickness, resulting in the quality of the welding edge of the packaging film at the closure cannot be guaranteed, which seriously affects the molding quality of the packaging film. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a packaging film continuous conveying device for realizing synchronous pressing of elastic edges, which effectively solves the problems in the background technology.

[0004] In order to achieve the above-mentioned object, the technical solution adopted by the present invention is: a packaging film continuous conveying device for realizing synchronous edge pressing of elastic edges, comprising:

[0005] Workbench;

[0006] An unwinding mechanism, arranged at one end of the workbench, comprises a film unwinding assembly and an elastic band unwinding assembly;

[0007] Two folding plates are arranged on both sides of the workbench along the conveying direction, and are used to fold the edges of the unwound film coil so as to wrap the unwound elastic band between two layers of film;

[0008] A lifting assembly is arranged between the two folding plates, and at least one flip plate is provided along the conveying direction, and the front edge of the flip plate is an arc-shaped surface convex outward, and the flip plate is folded upward and protrudes from the table surface of the workbench, and is used to lift the film between the two folding plates upward to adjust the width of the fold at the edge of the film;

[0009] The edge welding assembly includes a rotating shaft and two edge welding wheels arranged at both ends of the rotating shaft. The two edge welding wheels are respectively arranged corresponding to the two folding plates and are used for hot pressing and welding the two layers of film coated with elastic bands at the edges of the film.

[0010] Further, the film unwinding assembly comprises an unwinding roller, a first guide roller and a floating roller;

[0011] The unwinding roller and the floating roller are arranged on the same side, and the first guide roller is arranged between the unwinding roller and the floating roller;

[0012] And the floating roller is arranged below the folding plate.

[0013] Furthermore, the elastic band unwinding assembly comprises an unwinding wheel, a clamping wheel and a tensioning wheel;

[0014] The clamping wheel is located above the tensioning wheel; the clamping wheel is used to clamp the unwound elastic band, and the tensioning wheel is arranged between the folding plate and the clamping wheel, and is used to tension the unwound elastic band so that the elastic band enters the folding plate in a stretched state.

[0015] Furthermore, it also includes a bracket, and a first swing arm arranged on the bracket;

[0016] The tension wheel is swingably arranged via a first swing arm to stretch the elastic band sent out from the clamping wheel;

[0017] Wherein, the elastic band is in a stretched state when entering the folding plate, and a second swing arm is also provided on the bracket, and a detection component is provided at the free end of the second swing arm for monitoring the transmission state of the horizontal stretching section of the elastic band entering the folding plate.

[0018] Furthermore, the detection component comprises:

[0019] A fixing frame, arranged perpendicular to the transmission direction of the elastic band;

[0020] A photoelectric sensor is arranged below the fixing frame;

[0021] The detection sheet is rotatably arranged on one end of the fixing frame close to the elastic band, and one end away from the fixing frame is overlapped on the horizontal section of the elastic band, and is used to control the operation of the photoelectric sensor.

[0022] Furthermore, a torsion spring is provided at the rotating shaft between the detection piece and the fixing frame.

[0023] Furthermore, a spreading plate is provided between the folding plate and the welding wheel.

[0024] Furthermore, an adjustment plate is provided at the front end of the workbench, and an outer convex plate for mounting the folding plate is extended outward from the front edge of the adjustment plate;

[0025] The outer convex plate is provided with a horizontal mounting hole to adjust the two folding plates to move closer to or farther from each other;

[0026] The film unwound by the film unwinding assembly is fed into the folding plate in an inclined manner from below the outer convex plate in a direction opposite to the conveying direction.

[0027] Furthermore, a plurality of film conveying roller groups are arranged at the output end of the edge welding assembly along the conveying direction, and the film conveying roller group includes a lifting roller and side pressure rollers symmetrically arranged on both sides of the lifting roller;

[0028] The two side pressure rollers are arranged obliquely and spread outward in a vertical direction away from the lifting roller;

[0029] The film conveying roller group further includes a first driving member for driving the lifting roller to lift in a vertical direction, and a second driving member for driving two side pressure rollers to swing downward near one end of the lifting roller;

[0030] The heights of the multiple groups of lifting rollers gradually decrease along the conveying direction, while the angles of the two side pressure rollers in the multiple groups of film conveying rollers close to one end of the lifting rollers gradually increase along the conveying direction.

[0031] Furthermore, the lifting assembly further comprises a driving assembly arranged below the flip plate, the driving assembly comprising a driving motor and an eccentric wheel arranged at a driving end of the driving motor;

[0032] The outer contour surface of the eccentric wheel is used to drive the flip plate to perform a flipping action.

[0033] The beneficial effects of the present invention are as follows: the present invention rotates the flip plate to a desired angle so that the arc surface is higher than the conveying plane of the adjustment plate, so as to lift the middle part of the film upward, thereby controlling the folding distance on both sides of the film and effectively ensuring the consistency of the welding edge spacing. The folding edge is clamped and pressed by the welding wheel, which helps to melt the folding edge and firmly press the film and the elastic band together to achieve high-quality welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a schematic structural diagram of a packaging film continuous conveying device in an embodiment of the present invention;

[0036] Figure 2 The structure of synchronous edge pressing of the elastic edge of the packaging film in the embodiment of the present invention;

[0037] Figure 3 for Figure 1 A local enlarged view of point A;

[0038] Figure 4 This is a schematic diagram of the installation of the flip plate in an embodiment of the present invention;

[0039] Figure 5 It is a structural schematic diagram of a detection component in an embodiment of the present invention;

[0040] Figure 6 It is a structural schematic diagram of a film conveying roller group in an embodiment of the present invention;

[0041] Figure 7 Schematic diagram of film conveying roller group in an embodiment of the present invention.

[0042] Figure numerals: 1. workbench; 2. film unwinding assembly; 21. unwinding roller; 22. first guide roller; 23. floating roller; 3. elastic band unwinding assembly; 31. bracket; 311. first swing arm; 312. second swing arm; 32. clamping wheel; 33. tensioning wheel; 4. folding plate; 5. welding edge assembly; 51. rotating shaft; 52. welding edge wheel; 6. detection assembly; 61. fixing frame; 62. photoelectric sensor; 63. detection sheet; 7. unfolding plate; 8. torsion spring; 9. adjustment plate; 9a. outer convex plate; 10. horizontal mounting plate; 11. flip plate; 12. eccentric wheel; 14. film conveying roller group; 141. lifting roller; 142. side pressure roller. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0044] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0046] like Figures 1 to 7The packaging film continuous conveying device for realizing synchronous pressing of elastic edges as shown comprises: a workbench 1; an unwinding mechanism is arranged at one end of the workbench 1, and the unwinding mechanism comprises a film unwinding component 2 and an elastic band unwinding component 3;

[0047] Two folding plates 4 are arranged on both sides of the workbench 1 along the conveying direction, and the folding plates 4 are used to fold the edges of the unwound film coil so as to wrap the unwound elastic band between the two layers of film;

[0048] The lifting assembly is arranged between the two folding plates 4, and at least one flip plate 11 is provided along the conveying direction, and the front edge of the flip plate 11 is an arc-shaped surface convex outward, and the flip plate 11 is folded upward and protrudes from the table surface of the workbench 1, and is used to lift the film between the two folding plates 4 upward to adjust the width of the fold at the edge of the film;

[0049] The edge welding assembly 5 includes a rotating shaft 51 and two edge welding wheels 52 arranged at both ends of the rotating shaft 51. The two edge welding wheels 52 are respectively arranged corresponding to the two folding plates 4, and are used to hot-press and weld the two layers of film coated with elastic bands at the edges of the film.

[0050] The continuous edge pressing process in the present invention is as follows: the film unwinding assembly 2 and the elastic band unwinding assembly 3 release the film and the elastic band synchronously. During the transmission of the film, the flip plate 11 is rotated to the required angle so that the arc surface is higher than the conveying plane to lift the middle part of the film upward to adjust the folding distance on both sides of the film. When the folding width is adjusted to a suitable folding width, the folding plates 4 on both sides fold the edge of the film to form a groove for covering the elastic band. At the same time, the elastic band stretched to a preset state will be fed into the folding plate 4, and the welding wheel 52 clamps and presses the edge of the material. Preferably, two flip plates 11 are provided along the transmission direction and connected into one by a connecting rod to control the film edge spacing between the folding plate 4 and the welding edge assembly 5 to ensure the consistency of the welding edge spacing. The welding edge wheel 52 clamps and presses the edge of the material. This clamping and pressing action helps to melt the edge of the material and firmly press it together to achieve high-quality welding.

[0051] In a preferred embodiment of the present invention, the film unwinding assembly 2 includes an unwinding roller 21, a first guide roller 22 and a floating roller 23; the unwinding roller 21 and the floating roller 23 are arranged on the same side, the first guide roller 22 is arranged between the unwinding roller 21 and the floating roller 23; and the floating roller 23 is arranged below the hemming plate 4. After the film is unwound from the unwinding roller 21, the first guide roller 22 performs preliminary direction adjustment on the film, and the floating roller 23 performs further direction control on the film, so that the film coil enters the hemming plate 4 from the bottom of the workbench 1, so that the hemming plate 4 can effectively hem the edge of the film.

[0052] In a preferred embodiment of the present invention, the elastic band unwinding assembly 3 includes an unwinding wheel, a clamping wheel 32 and a tensioning wheel 33; the clamping wheel 32 is located above the tensioning wheel 33; the clamping wheel 32 is used to clamp the unwound elastic band, and the tensioning wheel 33 is arranged between the folding plate 4 and the clamping wheel 32, and is used to tension the unwound elastic band so that the elastic band enters the folding plate 4 in a stretched state.

[0053] The elastic band is sent out from the unwinding wheel in a freely retractable state, and is clamped by the clamping wheel 32 and controlled by the tensioning wheel 33 so that the elastic band in the free state is stretched and transmitted into the folding plate 4. The clamping wheel 32 is composed of two clamping discs, and the opposing surfaces of the two clamping discs have friction resistance. The gap reserved between the disc surfaces ensures that the elastic band can be pulled out smoothly and the state of the elastic band can be changed at the same time. In addition, an angle sensor is arranged on the tensioning wheel 33 to control the unwinding speed of the film coil according to the transmission speed of the elastic band to ensure the crimping quality of the elastic band in the folded edge.

[0054] On the basis of the above embodiment, the unwinding mechanism further includes a bracket 31, and a first swing arm 311 arranged on the bracket 31, and the tension wheel 33 can be swingably arranged through the first swing arm 311 to stretch the elastic band sent from the clamping wheel 32 to ensure that it is in an appropriate tension state before entering the subsequent processing link, wherein a second swing arm 312 is also provided on the bracket 31, and a detection component is provided at the free end of the second swing arm 312 to monitor the transmission state of the elastic band entering the horizontal stretching section of the folding plate 4. Through the installation method of the swing arm, the detection component 6 can flexibly adjust the position and angle to meet different detection requirements.

[0055] In the present invention, the elastic band is in a stretched state when entering the folding plate 4, and a detection component 6 arranged in the horizontal stretching section of the elastic band is used to realize real-time monitoring of the state of the elastic band. Specifically, the detection component 6 includes: a fixed frame 61 is arranged perpendicular to the conveying direction of the elastic band; a photoelectric sensor 62 is arranged below the fixed frame 61; a detection piece 63 is rotatably arranged on a section of the fixed frame 61 close to the elastic band, and the end away from the fixed frame 61 is overlapped on the horizontal section of the elastic band, which is used to control the operation of the photoelectric sensor 62.

[0056] In the horizontal stretching section of the elastic band, one end of the detection piece 63 is rotatably set on the fixing frame 61, and the other end is overlapped on the elastic band; under normal working conditions, when the elastic band maintains its tension, the stretched elastic band applies an upward force to the detection piece 63, so that the detection piece 63 is kept in a specific position, ensuring that the detection piece 63 does not block the photoelectric sensor 62, and the photoelectric sensor 62 can work normally at this time; then the folded edge of the film will continue to be transmitted forward with the elastic band, and the edge of the film covered with the elastic band is hot-pressed and welded by the welding edge assembly 5 to ensure that the elastic band is firmly fixed between two layers of film; and when the elastic band breaks during transmission or is not fully stretched for some reason, the detection sheet 63 will flip downward due to the loss of support of the elastic band. This flipping action causes the detection sheet 63 to block the transmitting end of the photoelectric sensor 62, resulting in the optical signal being unable to reach the receiving end, thereby causing the photoelectric sensor 62 to stop working. After the controller detects the signal interruption of the photoelectric sensor 62, it will respond quickly and issue an instruction for the machine to stop working. The machine can stop immediately to avoid continuing the edge pressing operation without the elastic band, thereby ensuring the quality and safety of the production process. The present invention monitors the state of the elastic band in real time through the cooperation of the photoelectric sensor 62 and the detection sheet 63, ensuring the continuity and accuracy of the edge pressing operation. Once a problem is found, the machine can respond quickly, reducing the production of defective products and improving product quality and production efficiency.

[0057] In a preferred embodiment of the present invention, a torsion spring 8 is provided at the rotating shaft of the detection piece 63 and the fixing frame 61. Specifically, the torsion spring 8 is sleeved on one end of the rotating shaft, one end of the torsion spring 8 is connected to the abutment surface of the end of the rotating shaft, and the other end is inserted into the side embedding hole of the fixing frame 61, and the detection piece 63 rotates synchronously with the rotating shaft through the spline, and is fixed by a nut at the other end of the rotating shaft 51; during use, the torsion spring 8 applies torque to the rotating shaft, and the detection piece 63 is turned down through the rotating shaft to generate downward pressure on the elastic band, so that the elastic band contacts the bottom film when entering the hemming plate 4, effectively controlling the initial transmission path of the elastic band, and better controlling the tension force, ensuring that the elastic band entering the hemming plate 4 is in a fully stretched state, in addition, when the detection piece 63 is turned down, it will also generate an outward pulling force on the elastic band, so that the elastic band has a corner, and by controlling the angle of the corner, it plays a transitional role in the unwinding direction of the elastic band and the transmission direction entering the hemming plate 4, so as to adjust the elastic band to the expected positioning position in the film, and effectively ensure the edge pressing quality.

[0058] In order to ensure the welding accuracy, a spreading plate 7 is provided between the folding plate 4 and the welding wheel 52. The gap between the spreading plate 7 and the workbench 1 is greater than or equal to the sum of the thickness of the two layers of film and the elastic band, and the edge portion after folding is smoothed, which effectively ensures the welding accuracy.

[0059] During the film conveying process, in order to ensure that the spacing between the folded edges on both sides is equal, an adjustment plate 9 is provided at the front end of the workbench 1, and the front edge of the adjustment plate 9 extends outward to form an outer convex plate 9a for mounting the folding plate 4; and a horizontal mounting hole is provided on the outer convex plate 9a. When the center of the film deviates from the middle position of the two folding plates 4, the two folding plates 4 are adjusted to be closer to or farther from each other, and the center position between the two folding plates 4 is changed, thereby further ensuring the consistency of the folded edges on both sides of the film. The film unwound by the film unwinding assembly 2 is obliquely fed into the folding plate 4 from the bottom of the outer convex plate 9a in the opposite direction to the conveying direction, and the oblique conveying path helps the film to be initially oriented and arranged before entering the folding plate 4, ensuring that the edge of the film can enter the folding plate 4 neatly and accurately, and at the same time, it helps to reduce the wrinkles or deviations of the film during the conveying process, and improve the accuracy and efficiency of film processing.

[0060] Since the flip plate 11 makes the middle part of the film convex upward when the film is folded, in order to avoid wrinkles in the middle part on the winding roller, in the preferred structure, a plurality of film conveying roller groups 14 are arranged at the output end of the welding edge assembly 5 along the conveying direction, and the film conveying roller group 14 includes a lifting roller 141 and side pressure rollers 142 symmetrically arranged on both sides of the lifting roller 141; the two side pressure rollers 142 are inclined and spread outward in the vertical direction away from the lifting roller 141; wherein the film conveying roller group 14 also includes a first driving member for driving the lifting roller 141 to lift and lower in the vertical direction, and a second driving member for driving the two side pressure rollers 142 to swing downward near one end of the lifting roller 141; and the height of the plurality of lifting rollers 141 along the conveying direction gradually decreases, while the angle between the two side pressure rollers 142 in the plurality of film conveying roller groups 14 near one end of the lifting roller 141 gradually increases along the conveying direction.

[0061] The lifting roller 141 is located below the film, and a lifting roller 141 close to the flip plate 11 is flush with the highest supporting point of the flip plate 11, so as to convey the raised film, and the side pressure rollers 142 located on both sides of the lifting roller 141 convey the inclined surfaces on both sides of the lifted film from above the film, and ensure the flatness of the film during the conveying process; the lifting roller 141 gradually descends along the conveying direction, and the ends of the two side pressure rollers 142 close to the lifting roller 141 also descend, so that the raised film is gradually smoothed during the conveying process, so that it can be smoothly wound on the winding roller.

[0062] In a preferred embodiment of the present invention, the lifting assembly further includes a driving assembly disposed below the flip plate, the driving assembly including a driving motor and an eccentric wheel 12 disposed at the driving end of the driving motor; the outer contour surface of the eccentric wheel 12 is used to drive the flip plate 11 to flip. By precisely adjusting the rotation angle of the eccentric wheel 12, the flip angle of the flip plate 11 can be accurately controlled, and the precise control of the folding edge spacing can be further achieved.

[0063] Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A packaging film continuous conveying device for realizing synchronous pressing of elastic edges, characterized in that: include: Workbench; An unwinding mechanism, arranged at one end of the workbench, comprises a film unwinding assembly and an elastic band unwinding assembly; Two folding plates are arranged on both sides of the workbench along the conveying direction, and are used to fold the edges of the unwound film coil so as to wrap the unwound elastic band between two layers of film; A lifting assembly is arranged between the two folding plates, including at least one flip plate provided along the conveying direction, and the front end edge of the flip plate is an arc-shaped surface protruding outward, and the flip plate is folded upward and protrudes from the table surface of the workbench, and is used to lift the film between the two folding plates upward to adjust the width of the fold at the edge of the film; The edge welding assembly comprises a rotating shaft and two edge welding wheels arranged at both ends of the rotating shaft, wherein the two edge welding wheels are respectively arranged corresponding to the two folding plates, and are used for hot pressing and welding the two layers of film coated with elastic bands at the edges of the film to fix them; The elastic band unwinding assembly comprises a tensioning wheel, which tensions the unwinding elastic band so that the elastic band enters the hemming plate in a stretched state; A plurality of film conveying roller groups are arranged at the output end of the edge welding assembly along the conveying direction, and the film conveying roller groups include lifting rollers and side pressure rollers symmetrically arranged on both sides of the lifting rollers; The two side pressure rollers are arranged obliquely and spread outward in a vertical direction away from the lifting roller; The film conveying roller group further includes a first driving member for driving the lifting roller to lift in a vertical direction, and a second driving member for driving two side pressure rollers to swing downward near one end of the lifting roller; The heights of the multiple groups of lifting rollers gradually decrease along the conveying direction, while the angles of the two side pressure rollers in the multiple groups of film conveying rollers close to one end of the lifting rollers gradually increase along the conveying direction.

2. The packaging film continuous conveying device for realizing synchronous pressing of elastic edges according to claim 1, characterized in that: The film unwinding assembly comprises an unwinding roller, a first guide roller and a floating roller; The unwinding roller and the floating roller are arranged on the same side, and the first guide roller is arranged between the unwinding roller and the floating roller; And the floating roller is arranged below the folding plate.

3. The packaging film continuous conveying device for realizing synchronous pressing of elastic edges according to claim 1, characterized in that: The elastic band unwinding assembly also includes an unwinding wheel and a clamping wheel; The clamping wheel is located above the tensioning wheel; the clamping wheel is used to clamp the unwinding elastic band, and the tensioning wheel is arranged between the folding plate and the clamping wheel.

4. The packaging film continuous conveying device for realizing synchronous pressing of elastic edges according to claim 3, characterized in that: It also includes a bracket, and a first swing arm arranged on the bracket; The tension wheel is swingably arranged via a first swing arm to stretch the elastic band sent out from the clamping wheel; Wherein, the elastic band is in a stretched state when entering the folding plate, and a second swing arm is also provided on the bracket, and a detection component is provided at the free end of the second swing arm for monitoring the transmission state of the horizontal stretching section of the elastic band entering the folding plate.

5. The packaging film continuous conveying device for realizing synchronous pressing of elastic edges according to claim 4, characterized in that: The detection component comprises: A fixing frame, arranged perpendicular to the transmission direction of the elastic band; A photoelectric sensor is arranged below the fixing frame; The detection sheet is rotatably arranged on one end of the fixing frame close to the elastic band, and one end away from the fixing frame is overlapped on the horizontal section of the elastic band, and is used to control the operation of the photoelectric sensor.

6. The packaging film continuous conveying device for realizing synchronous pressing of elastic edges according to claim 5, characterized in that: A torsion spring is provided at the rotating shaft of the detection piece and the fixing frame.

7. The packaging film continuous conveying device for realizing synchronous pressing of elastic edges according to claim 1, characterized in that: A spreading plate is provided between the folding plate and the welding wheel.

8. The packaging film continuous conveying device for realizing synchronous pressing of elastic edges according to claim 1, characterized in that: An adjustment plate is provided at the front end of the workbench, and an outer convex plate for mounting the folding plate is formed by extending outward from the front edge of the adjustment plate; The outer convex plate is provided with a horizontal mounting hole to adjust the two folding plates to move closer to or farther from each other; The film unwound by the film unwinding assembly is fed into the folding plate in an inclined manner from below the outer convex plate in a direction opposite to the conveying direction.

9. The packaging film continuous conveying device for realizing synchronous pressing of elastic edges according to claim 1, characterized in that: The lifting assembly further includes a driving assembly disposed below the flip plate, wherein the driving assembly includes a driving motor and an eccentric wheel disposed at a driving end of the driving motor; The outer contour surface of the eccentric wheel is used to drive the flip plate to perform a flipping action.

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