CN219668671U

CN219668671U - Film tearing device

Info

Publication number: CN219668671U
Application number: CN202320557676.5U
Authority: CN
Inventors: 刘晓雯; 杨明; 刘海洋; 段喜鹏; 石昌云
Original assignee: Fulian Technology Shanxi Co Ltd
Current assignee: Fulian Technology Shanxi Co Ltd
Priority date: 2023-03-20
Filing date: 2023-03-20
Publication date: 2023-09-12
Anticipated expiration: 2033-03-20

Abstract

The utility model relates to the field of industrial equipment, and aims to solve the problems that a known film tearing mode is low in operation efficiency and possibly scratches a workpiece. The suction head component is connected with the connecting frame and can move along with the connecting frame; the suction head assembly is provided with an adsorption surface and is used for adsorbing the membrane material so that the suction head assembly can move along with the connecting frame to pull out the membrane material. The clamping jaw assembly is connected to the connecting frame in a telescopic mode, can extend out to the front of the adsorption surface, and clamps the film material adsorbed and pulled out by the suction head assembly so as to tear the film material from the workpiece. The utility model has the advantages of high operation efficiency and difficult scraping of workpieces.

Description

Film tearing device

Technical Field

The utility model relates to the field of industrial equipment, in particular to a film tearing device.

Background

Some workpieces need to be subjected to film pasting protection on part of important surfaces during processing or working procedure transferring so as to avoid damage to the surfaces of the workpieces. And thus a film tearing action may be required to tear the film.

In the known technology, in order to realize film tearing, the end part of the film material (namely the film head) needs to be scraped and tilted by a tool such as a scraper manually, and then the film material is manually pulled from the film head to tear the film material.

However, this mode of operation is inefficient and may also occur where the doctor blade scrapes the surface of the workpiece.

Disclosure of Invention

The utility model aims to provide a film tearing device which solves the problems that a known film tearing mode is low in operation efficiency and a workpiece is possibly scratched.

The utility model provides a film tearing device which is used for tearing off a film material attached to a workpiece and comprises a connecting frame, a suction head assembly and a clamping jaw assembly. The suction head component is connected to the connecting frame; the suction head component comprises a suction head which is used for adsorbing the membrane material and pulling out the membrane material under the drive of the connecting frame. The clamping jaw assembly is connected to the connecting frame in a telescopic mode, and is used for extending to the front of the suction head and clamping the film material adsorbed and pulled out by the suction head so as to tear the film material from the workpiece.

According to the film tearing device, the suction head assembly and the clamping jaw assembly are arranged on the connecting frame, the film head of the film material is sucked out through the suction head assembly, and the film head is clamped through the clamping jaw assembly and the film material is torn off, so that the film tearing device has the effects of easiness in realizing automatic operation, high operation efficiency and difficulty in damaging a workpiece.

In one possible embodiment, the suction head is adapted to be moved in a first direction after the film material has been sucked up to pull out the film material, and the jaw assembly is adapted to be telescoped in a second direction perpendicular or obliquely intersecting the first direction to grip and tear the film material.

In one possible embodiment, the connecting frame comprises a supporting frame which is a trapezoid frame structure, and the suction head assembly and the clamping jaw assembly are respectively connected to two side bevel edges on the supporting frame.

In one possible embodiment, the connection rack further comprises a suction head connection plate and a clamping jaw connection plate; the support frames are arranged in a plurality of parallel and spaced mode. The suction head connecting plate is connected to the same side bevel edge of the supporting frames, and the clamping jaw connecting plate is connected to the other side bevel edge of the supporting frames. The suction head assembly is connected to the surface of the suction head connecting plate, which is far away from the supporting frame, and the clamping jaw assembly is connected to the surface of the clamping jaw connecting plate, which is far away from the supporting frame.

In one possible embodiment, the support frame further comprises a top edge and a bottom edge connected to two side sloping edges, wherein the first sloping edge is connected with the suction head assembly, the second sloping edge is connected with the clamping jaw assembly, the suction head is positioned on one side of the top edge away from the bottom edge, and the clamping end of the clamping jaw assembly is oriented along the second sloping edge in a direction from the bottom edge to the top edge.

In one possible embodiment, the connecting frame further comprises a connecting member fixedly connected to a bottom side of the support frame and adapted to be connected to a robot arm.

In one possible implementation mode, the suction head assembly further comprises a suction head seat and a suction head driving mechanism, a negative pressure cavity is arranged in the suction head seat, the suction head is installed at one end of the suction head seat and communicated with the negative pressure cavity, and one end of the suction head driving mechanism is movably arranged in the negative pressure cavity and used for changing the pressure in the negative pressure cavity so that the suction head sucks or releases the film material. The suction head driving mechanism comprises a driving cylinder and a piston rod, wherein the driving cylinder and the suction head seat are arranged at intervals, one end of the piston rod is movably arranged in the negative pressure cavity, the other end of the piston rod is connected with the driving cylinder, and the driving cylinder is used for driving the piston rod to move along the negative pressure cavity.

In one possible embodiment, the suction head seat is provided with a suction head positioning plate, the driving cylinder is provided with a cylinder positioning plate, the suction head positioning plate is opposite to the cylinder positioning plate and is arranged at intervals, the suction head positioning plate and the cylinder positioning plate are fixedly connected with the connecting frame, and one or more positioning rods are arranged between the suction head positioning plate and the cylinder positioning plate.

In one possible implementation mode, the suction head comprises a main body part and a positioning part, wherein the positioning part is positioned on the periphery side of the main body part and is used for connecting a suction head seat, a through hole is formed in the main body part, and the through hole is communicated with the negative pressure cavity. The end face of the suction head is provided with a groove surrounding the through hole.

In one possible embodiment, the clamping jaw assembly comprises a telescopic cylinder and a clamping jaw mechanism, the telescopic cylinder is mounted on the connecting frame, the clamping jaw mechanism is connected with the output end of the telescopic cylinder, and the telescopic cylinder is used for driving the clamping jaw mechanism to move towards the membrane material. The clamping jaw mechanism comprises a mounting frame, a clamping cylinder and two clamping fingers, wherein the mounting frame is connected with the output end of the telescopic cylinder, the clamping cylinder is arranged on one side, deviating from the telescopic cylinder, of the mounting frame, the two clamping fingers are oppositely arranged and connected with the telescopic cylinder, and the telescopic cylinder is used for driving the two clamping fingers to move in opposite directions so as to clamp the membrane material.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly describe the drawings in the embodiments, it being understood that the following drawings only illustrate some embodiments of the present utility model and should not be considered as limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a film tearing device according to an embodiment of the present utility model;

FIG. 2 is a three-dimensional view of one view of a film tearing device in an embodiment of the present utility model;

FIG. 3 is a three-dimensional view of another view of a film tearing device in an embodiment of the present utility model;

FIG. 4 is a three-dimensional cross-sectional view of one view of a film tearing device in an embodiment of the present utility model;

figure 5 is a three-dimensional cross-sectional view of a suction head assembly in accordance with an embodiment of the present utility model;

figure 6 is a three-dimensional cross-sectional view of a cleaner head in accordance with an embodiment of the utility model.

Description of main reference numerals:

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "or/and" as used herein includes any and all combinations of one or more of the associated listed items.

Some embodiments of the utility model are described in detail. The following embodiments and features of the embodiments may be combined with each other without collision.

Examples

Referring to fig. 1, the present embodiment provides a film tearing device 100 for tearing off a film material 300 attached to a workpiece 200. The workpiece 200 is shown as the outer rim of a cell phone, which is generally rectangular and annular. A layer of film material 300 is attached to the outer peripheral surface of the work 200 for protecting the outer peripheral surface of the work 200 from damage during the processing or the transfer of the work 200. When the film 300 is attached to the workpiece 200 in the circumferential direction, the film head is also attached to the outer peripheral surface of the workpiece 200. Before the film tearing operation, the workpiece 200 may be positioned and mounted on the positioning jig 400.

In other embodiments, the structure of the workpiece 200, the attaching position of the film material 300, and the positioning manner of the workpiece 200 may be determined according to needs, which are not limited herein.

Referring to fig. 2 and 3, the film tearing apparatus 100 according to the present embodiment includes a connecting frame 10, a suction head assembly 30 and a jaw assembly 70.

The connecting frame 10 is used as a mounting base and can be used for being connected to a mechanical arm, so that the whole film tearing device 100 can be driven by the mechanical arm to move so as to complete the film tearing action in a matching way. For example, the mechanical arm may be an industrial six-degree-of-freedom mechanical arm, which can drive the film tearing device 100 that clamps the film head (i.e. the end of the film material 300) to move circumferentially around the workpiece 200, so that the film material 300 gradually breaks away from the surface of the workpiece 200 from the film head in the circumferential direction, and film tearing is achieved.

Of course, in other embodiments, the positioning tool 400 may also have a function of driving the workpiece 200 to rotate circumferentially, so that the mechanical arm only needs to perform pulling of the film material 300 in a direction away from the rotation center of the positioning tool 400 during film tearing; alternatively, the robot arm may tear the film 300 from the surface of the workpiece 200 by rotating the robot arm to wind the film 300 around the outer peripheral surface of the end of the robot arm.

Or, the film tearing device 100 is fixedly arranged through the connecting frame 10, and the workpiece 200 can be positioned along with the positioning jig 400 relative to the film tearing device 100, so that the film tearing device 100 and the workpiece 200 are relatively far away, and the effect of tearing off the film material 300 is achieved.

With continued reference to fig. 2 and 3, in this embodiment, the tip assembly 30 and the jaw assembly 70 are each coupled to the connector 10 and are movable with the connector 10. The suction head assembly 30 includes a suction head 31 for sucking the membrane material 300 and enabling the suction head assembly 30 to move with the connection frame 10 to pull the membrane material 300 out of the work piece 200 by a certain length. After the film 300 is pulled out by a certain length, the clamping jaw assembly 70 may extend to be close to the film 300 to clamp a portion of the film 300 absorbed and pulled out by the suction head assembly 30, and then move relative to the workpiece 200 to tear the film 300 from the workpiece 200, so as to complete the film tearing operation.

In this dyestripping device 100, inhale membrane and tear film an organic whole and set up, can accomplish work piece 200 dyestripping operation convenient and fast, and easily realize automatic operation, efficient, can avoid manual operation probably to exist when scraping out the problem of work piece 200 by mistake with the scraper.

The connector 10, tip assembly 30 and jaw assembly 70 of the dyestripping apparatus 100 will be exemplarily described.

Referring to fig. 3 and 4, the connecting frame 10 includes a connecting member 17, a supporting member 11, and a suction head connecting plate 15 and a jaw connecting plate 16 provided at both ends of the supporting member 11, respectively. The suction head connection plate 15 and the jaw connection plate 16 are respectively used for connecting the suction head assembly 30 and the jaw assembly 70, and the connecting piece 17 is connected to the supporting member 11 and is used for connecting to a mechanical arm.

In this embodiment, the supporting member 11 includes at least two supporting frames 12 disposed at intervals, the supporting frames 12 are in a trapezoid frame structure, and include a top edge 18, a bottom edge 19 and two side oblique edges 22, which correspond to the top edge, the bottom edge and the two waists of the trapezoid respectively, where the top edge 18 and the bottom edge 19 of the supporting frame 12 are not equal in length, and the oblique edges 22 include a second oblique edge 14 disposed at an angle with the first oblique edge 13.

The tip connection plate 15 is plate-shaped, is fixedly connected between the first sloping sides 13 of the two support frames 12, and is used for connecting the tip assembly 30. The jaw connecting plate 16 is plate-shaped, is fixedly connected between the second sloping sides 14 of the two support frames 12, and is used for connecting the jaw assemblies. Due to the trapezoid structure of the supporting frame 12, the suction head connecting plate 15 and the clamping jaw connecting plate 16 connected to the supporting frame 12 are arranged at an angle, so that the suction head assembly 30 can suck films from one direction, the clamping jaw assembly 70 can tear films from the other direction, the structure is simple and compact, the sequential operation of film sucking, film clamping and film tearing is facilitated, and the action connection is reasonable and smooth.

Alternatively, the included angle between the jaw connecting plate 16 and the suction head connecting plate 15 is 90 degrees, so that the suction head assembly 30 extending out of the suction film along the transverse direction and the jaw assembly 70 lifting and lowering the suction film along the vertical direction can be arranged, and mutual interference between the actions is small. In other embodiments, the included angle between the jaw attachment plate 16 and the suction head attachment plate 15 may be other angles, such as 45 degrees, 75 degrees, 105 degrees, 120 degrees, etc., without limitation.

In this embodiment, the connector 17 is optionally fixedly attached to the side of the bottom edge 19 of the support frame 12. In this manner, the mechanical arm connects the connector 17 on the side of the clamping end 76 of the suction head 31 and jaw assembly 70 remote from the suction head assembly 30, which does not readily interfere with the suction head assembly 30 and jaw assembly 70 during movement.

Of course, the structure of the connecting frame 10 is merely exemplary, and the connecting frame 10 in the present embodiment may be modified to other forms, for example, the supporting frame 12 may be replaced by a plate-like structure having two mounting surfaces with a certain included angle, where the two mounting surfaces are used for mounting the clamping jaw assembly 70 and the suction head assembly 30, respectively.

Fig. 4 to 6 show a specific structure of the suction head assembly 30 in this embodiment.

Referring to fig. 4 and 5, the tip assembly 30 in this embodiment includes a tip 31, a tip seat 36 and a tip drive mechanism 40, the tip seat 36 and the tip drive mechanism 40 being mounted to the tip attachment surface 20 of the tip attachment plate 15.

The inside negative pressure chamber 37 that sets up of suction head seat 36, suction head 31 installs in the one end of suction head seat 36, and suction head 31 intercommunication negative pressure chamber 37, suction head actuating mechanism 40 one end movably locates negative pressure chamber 37 for change the pressure in the negative pressure chamber 37, make suction head 31 absorb or release film material 300.

The suction head driving mechanism 40 comprises a driving cylinder 41 and a piston rod 43, the driving cylinder 41 and the suction head seat 36 are arranged at intervals, one end of the piston rod 43 is movably arranged in the negative pressure cavity 37, the other end of the piston rod 43 is connected with the driving cylinder 41, and the driving cylinder 41 is used for driving the piston rod 43 to move along the negative pressure cavity 37.

The suction head seat 36 has a suction head positioning plate 38, the driving cylinder 41 has a cylinder positioning plate 42, the suction head positioning plate 38 is opposite to the cylinder positioning plate 42 and is arranged at intervals, the suction head positioning plate 38 and the cylinder positioning plate 42 are fixedly connected to the connecting frame 10, and one or more positioning rods 44 (four positioning rods 44 are shown in the figure) are arranged between the suction head positioning plate 38 and the cylinder positioning plate 42.

Referring to fig. 6, the suction head 31 includes a main body 32 and a positioning portion 35, the positioning portion 35 is located at a peripheral side of the main body 32 and is used for connecting a suction head seat 36, a through hole 33 is formed in the main body 32, and the through hole 33 is communicated with a negative pressure cavity 37. The through hole 33 penetrates to the end face 48 of the suction head, and the end face 48 of the suction head 31 has a vacuum adsorption function. The end face 48 of the suction head 31 is provided with a recess 34 surrounding the through hole 33. Alternatively, the suction head 31 may be made of polyurethane material, which may achieve flexible contact with the membrane 300 on the workpiece 200, and may improve the sealing of the contact surface. The provision of the grooves 34 allows the membrane material 300 to be more tightly adsorbed, reducing the likelihood of loosening the adsorption process.

In this embodiment, the suction head assembly 30 further includes a suction head sealing member 47, and the suction head sealing member 47 is sandwiched between the suction head 31 and the suction head seat 36 to ensure sealing performance thereof and avoid air leakage of the negative pressure chamber 37. Optionally, a tip seal groove 39 is provided on a side of the tip seat 36 facing the tip 31, and a tip seal member 47 is partially accommodated in the tip seal groove 39 to achieve sealing.

In this embodiment, the suction head assembly 30 further includes a pressing plate 45 and a fastening member 46, the positioning portion 35 of the suction head 31 is sandwiched between the pressing plate 45 and the suction head seat 36, and the fastening member 46 penetrates the pressing plate 45 and the positioning portion 35 and connects the suction head seat 36. The pressure plate 45 may be made of a rigid material, such as metal, to compress the suction head 31 against the suction head seat 36. Alternatively, the fasteners 46 are screws that pass through the platen 45 and then are threaded onto the tip holder 36 to compress the tip 31 against the tip holder 36.

In use, the suction head assembly 30 can be driven by the mechanical arm to move along with the connecting frame 10 along the first direction 49 to attach and suck the film 300, and then move back along the first direction 49 to pull out the film 300. The first direction 49 is the direction facing the film stock 300.

Referring again to fig. 2 or 3, the jaw assembly 70 in this embodiment is mounted to the jaw connecting plate 16 to be connected to one side of the connecting frame 10 by the jaw connecting plate 16. The clamping jaw assembly 70 is used for clamping the film material 300 sucked by the suction head 31 so as to tear the film material 300.

In this embodiment, the clamping jaw assembly 70 includes a telescopic cylinder 71 and a clamping jaw mechanism 72, the telescopic cylinder 71 is mounted on the connecting frame 10, the clamping jaw mechanism 72 is connected to an output end of the telescopic cylinder 71, and the telescopic cylinder 71 is used for driving the clamping jaw mechanism 72 to stretch along a second direction 77, where the second direction 77 is perpendicular to or obliquely intersects with the first direction 49.

Optionally, the clamping jaw mechanism 72 includes a mounting frame 73, a clamping cylinder 74 and two clamping fingers 75, the mounting frame 73 is connected with the output end of the telescopic cylinder 71, the clamping cylinder 74 is arranged on one side of the mounting frame 73 away from the telescopic cylinder 71, the two clamping fingers 75 are oppositely arranged and connected with the telescopic cylinder 71, and the telescopic cylinder 71 is used for driving the two clamping fingers 75 to move in opposite directions so as to clamp the film material 300.

In this embodiment, the clamping end 76 of the clamping jaw assembly 70 (i.e. the end where the clamping finger 75 is disposed) is oriented along the second oblique side 14 from the bottom side 19 toward the top side 18, and similarly, the suction head 31 of the suction head assembly 30 is located on the side of the top side 18 away from the bottom side 19, so that the two end actuating ends of the suction head 31 and the clamping finger 75 are located on the same side of the support frame 12, which can conveniently implement the film sucking and clamping actions on the same side, and is convenient to use.

The steps of using the film tearing device 100 of the present embodiment are as follows:

1. positioning the workpiece 200 to the positioning jig 400;

2. the whole film tearing device 100 moves forward under the drive of the mechanical arm, so that the suction head 31 contacts the surface of the film head of the film material 300;

3. the piston rod 43 is pulled back by driving the cylinder 41, so that the negative pressure cavity 37 generates negative pressure, and the film head of the film material 300 is adsorbed;

4. the whole film tearing device 100 moves backwards under the drive of the mechanical arm so that the pulled film 300 corresponds to the lower part of the clamping finger 75;

5. the telescopic air cylinder 71 drives the clamping finger 75 to move downwards to be sleeved into the pulled-out film material 300, and the clamping finger 75 is closed through the clamping air cylinder 74 to clamp the film material 300;

6. the film tearing device 100 integrally moves to enable the clamping jaw assembly 70 to tear the film material 300 from the workpiece 200, so that the film tearing operation is completed.

By combining the above description, the film tearing device 100 in the embodiment of the utility model has compact and reasonable structure, can conveniently realize automatic film tearing operation, improves the operation efficiency, saves working procedure time and has good practical value.

The above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the above preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model.

Claims

1. A film tearing device for tearing off a film material attached to a workpiece, characterized in that the film tearing device comprises:

a connecting frame;

a suction head assembly connected to the connection frame; the suction head assembly comprises a suction head, and the suction head is used for adsorbing the membrane material and pulling out the membrane material under the drive of the connecting frame;

the clamping jaw assembly is connected to the connecting frame in a telescopic mode, and is used for extending to the front of the suction head and clamping the film material absorbed and pulled out by the suction head so as to tear the film material from the workpiece.

2. The film tearing apparatus of claim 1, wherein:

the suction head is used for moving along a first direction after sucking the membrane material so as to pull out the membrane material, and the clamping jaw assembly is used for stretching along a second direction which is perpendicular to or obliquely intersected with the first direction so as to clamp and tear the membrane material.

3. The film tearing apparatus of claim 1, wherein:

the connecting frame comprises a supporting frame, the supporting frame is of a trapezoid frame structure, and the suction head assembly and the clamping jaw assembly are respectively connected to two bevel edges on the supporting frame.

4. A film tearing apparatus according to claim 3, wherein:

the connecting frame also comprises a suction head connecting plate and a clamping jaw connecting plate; the plurality of support frames are arranged in parallel at intervals; the suction head connecting plate is connected with the same side bevel edges of the supporting frames, and the clamping jaw connecting plate is connected with the other side bevel edges of the supporting frames; the suction head assembly is connected to the surface of the suction head connecting plate, which is far away from the supporting frame, and the clamping jaw assembly is connected to the surface of the clamping jaw connecting plate, which is far away from the supporting frame.

5. The film tearing apparatus of claim 4, wherein:

the support frame further comprises a top edge and a bottom edge which are connected to the bevel edges on two sides, wherein the bevel edges on two sides are connected with a first bevel edge of the suction head assembly, the bevel edges on two sides are connected with a second bevel edge of the clamping jaw assembly, the suction head is located on one side of the top edge away from the bottom edge, and the clamping end of the clamping jaw assembly faces in the direction from the bottom edge to the top edge along the second bevel edge.

6. The film tearing apparatus of claim 5, wherein:

the connecting frame also comprises a connecting piece, wherein the connecting piece is fixedly connected to one side of the bottom edge of the supporting frame and is used for being connected to a mechanical arm.

7. The film tearing apparatus of claim 1, wherein:

the suction head assembly further comprises a suction head seat and a suction head driving mechanism, a negative pressure cavity is arranged in the suction head seat, the suction head is arranged at one end of the suction head seat and is communicated with the negative pressure cavity, and one end of the suction head driving mechanism is movably arranged in the negative pressure cavity and is used for changing the pressure in the negative pressure cavity so that the suction head sucks or releases a film material;

the suction head driving mechanism comprises a driving cylinder and a piston rod, the driving cylinder and the suction head seat are arranged at intervals, one end of the piston rod is movably arranged in the negative pressure cavity, the other end of the piston rod is connected with the driving cylinder, and the driving cylinder is used for driving the piston rod to move along the negative pressure cavity.

8. The film tearing apparatus of claim 7, wherein:

the suction head seat is provided with a suction head positioning plate, the driving air cylinder is provided with an air cylinder positioning plate, the suction head positioning plate is opposite to the air cylinder positioning plate and is arranged at intervals, the suction head positioning plate and the air cylinder positioning plate are fixedly connected with the connecting frame, and one or more positioning rods are arranged between the suction head positioning plate and the air cylinder positioning plate.

9. The film tearing apparatus of claim 8, wherein:

the suction head comprises a main body part and a positioning part, wherein the positioning part is positioned at the periphery of the main body part and is used for connecting the suction head seat, a through hole is formed in the main body part, and the through hole is communicated with the negative pressure cavity;

the end face of the suction head is provided with a groove surrounding the through hole.

10. The film tearing apparatus of claim 1, wherein:

the clamping jaw assembly comprises a telescopic air cylinder and a clamping jaw mechanism, the telescopic air cylinder is mounted on the connecting frame, the clamping jaw mechanism is connected with the output end of the telescopic air cylinder, and the telescopic air cylinder is used for driving the clamping jaw mechanism to move towards the film material;

the clamping jaw mechanism comprises a mounting frame, a clamping cylinder and two clamping fingers, wherein the mounting frame is connected with the output end of the telescopic cylinder, the clamping cylinder is arranged on one side, away from the telescopic cylinder, of the mounting frame, the two clamping fingers are oppositely arranged and connected with the telescopic cylinder, and the telescopic cylinder is used for driving the two clamping fingers to move oppositely so as to clamp the membrane material.