CN210308141U

CN210308141U - Film cutting mechanism

Info

Publication number: CN210308141U
Application number: CN201921213428.9U
Authority: CN
Inventors: 叶庆丰; 孙庆; 肖申; 文露
Original assignee: Bozhon Precision Industry Technology Co Ltd
Current assignee: Bozhon Precision Industry Technology Co Ltd
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-04-14
Anticipated expiration: 2029-07-30

Abstract

The application relates to a film cutting mechanism, include: a frame; the first conveyor belt is arranged on the rack; the second conveyor belt is arranged on the rack and is positioned at one end of the first conveyor belt along the conveying direction; the film transverse cutting mechanism is arranged between the first conveyor belt and the second conveyor belt and is used for cutting the film roll material into sections; the film longitudinal cutting mechanism is arranged on the rack and is used for further cutting the film cut into sections into a plurality of blocks; the film transfer mechanism is used for transferring the film cut by the film transverse cutting mechanism to the film longitudinal cutting mechanism; the film transverse cutting mechanism and the film longitudinal cutting mechanism are both provided with cutter mechanisms capable of adjusting cutting tracks. The utility model has the advantages that: the angle and the position of the cutting mechanism can be adjusted according to the deflection generated after the film coil stock is spread out and transmitted on the transmission line, so that the accuracy of film cutting is ensured; the film tensioning mechanism is arranged to prevent the film from cracking in the cutting process.

Description

Film cutting mechanism

Technical Field

The application belongs to the technical field of film cuts, especially relates to a film cuts mechanism.

Background

In the prior art, the film roll is cylindrical and inconvenient to fix and cut, and the cutting process of the existing film cutting machine generally comprises the steps of spreading the roll by a transmission line for conveying, fixing two ends of a part to be cut of the film roll, transversely cutting the film, and longitudinally cutting the film. Because the film coil stock is longer, the aspects such as the roughness, the depth of parallelism of film all received the influence in the transmission course, and direct location cutting causes the error very easily.

Particularly, in the prior art, there is a solar panel film, and when the film roll is cut, if the film roll is cut askew due to positioning deviation, the film is directly scrapped, which causes huge loss.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the film cutting mechanism is provided for solving the problem of the insufficient cutting accuracy of the film coil stock in the prior art.

The utility model provides a technical scheme that its technical problem adopted is: a film cutting mechanism comprising:

a frame;

the first conveyor belt is arranged on the rack;

the second conveyor belt is arranged on the rack and is positioned at one end of the first conveyor belt along the conveying direction;

the film transverse cutting mechanism is arranged between the first conveyor belt and the second conveyor belt and is used for cutting the film roll into sections;

the film longitudinal cutting mechanism is arranged on the rack and is used for further cutting the film cut into sections into a plurality of pieces;

the film transfer mechanism is used for transferring the film cut by the film transverse cutting mechanism to the film longitudinal cutting mechanism;

the film transverse cutting mechanism and the film longitudinal cutting mechanism are both provided with cutter mechanisms capable of adjusting cutting tracks.

Preferably, the utility model discloses a film cuts mechanism, film transversely cuts mechanism includes:

a base;

the translation plate can be driven by the translation driving piece to perform displacement along a horizontal first direction;

the first rotating plate is arranged on the translation plate and can rotate relative to the translation plate under the driving of the rotating driving piece;

the pressing plate is connected with the first rotating plate through a pressing plate driving part, and the pressing plate driving part is used for driving the pressing plate to be close to or far away from the first rotating plate so as to clamp or release the film;

and the transverse cutter mechanism is connected to the first rotating plate and is provided with a transverse cutter, the transverse cutter can cut the film between the pressing plate and the first rotating plate along a cutting track, and the cutting track of the transverse cutter can be changed along with the displacement of the translating plate and/or the rotation of the first rotating plate.

Preferably, the utility model discloses a film cuts mechanism, film vertically cut the mechanism and include:

a base plate;

the bearing table is used for bearing the film and is provided with a gap for the cutter to pass through;

the second rotating plate is connected to the bottom plate;

the film pressing mechanism is arranged above the bearing table and used for pressing the film;

the longitudinal cutter mechanism is arranged on the second rotating plate and is provided with a longitudinal cutter for cutting the film, and the longitudinal cutter can move along the gap to cut the film on the bearing table;

the longitudinal cutter and the second rotating plate can change the cutting track of the longitudinal cutter under the drive of the position adjusting assembly.

Preferably, the utility model discloses a film cuts mechanism still includes:

the first upper clamping piece is connected to the pressing plate;

the second upper clamping piece is connected to the pressing plate, is positioned on one side of the first upper clamping piece and is parallel to the first upper clamping piece;

a first lower jaw coupled to the first rotation plate in alignment with the first upper jaw;

a second lower jaw coupled to the first rotation plate in alignment with the second upper jaw;

the first upper clamping piece and the second upper clamping piece can be close to or far away from the first lower clamping piece and the second lower clamping piece at the same time;

gaps are reserved between the first upper clamping piece and the second upper clamping piece and between the first lower clamping piece and the second lower clamping piece, and a cutting channel for the transverse cutter to pass through is formed.

Preferably, the film cutting mechanism of the utility model,

the first upper clamping piece is connected to the pressing plate through an upper clamping piece driving piece, and the upper clamping piece driving piece is used for driving the first upper clamping piece to be far away from or close to the second upper clamping piece; the first lower jaw is disposed on the sliding rail of the first rotating plate and can freely move,

after the first upper clamping piece and the second upper clamping piece are close to the first lower clamping piece and the second lower clamping piece to clamp the film, the first upper clamping piece can be far away from the second upper clamping piece under the driving of the upper clamping piece driving piece, and the first lower clamping piece is driven by friction force to move together with the first upper clamping piece so as to strain the film.

Preferably, in the film cutting mechanism of the present invention, the supporting table is divided into a first supporting table and a second supporting table, and the gap is formed between the first supporting table and the second supporting table; the second bearing platform is fixed on the bottom plate, and the first bearing platform is installed on the sliding rail of the bottom plate and can move away from or close to the second bearing platform along the sliding rail under the driving of the driving piece.

Preferably, the utility model discloses a film cuts mechanism, film shifts mechanism includes:

a robot arm capable of three-axis movement on the frame;

and the sucker group is used for adsorbing and grabbing the film.

Preferably, the utility model discloses a film cutting mechanism, the lower extreme of arm is connected film hold-down mechanism, film hold-down mechanism includes:

the fixing plate is fixed at the lower end of the mechanical arm;

the first mounting plate is mounted on the sliding rail of the fixing plate and can freely move along the sliding rail;

the second mounting plate is fixed on the fixing plate;

the compression plate is arranged on the first mounting plate and the second mounting plate and can be driven by a compression plate driving part to lift;

after descending, the pressing plate can respectively press two sides of the film on the first bearing table and the second bearing table, and the first bearing table can drive the first mounting plate to move together through friction force when being far away from the second bearing table so as to tighten the film.

Preferably, the utility model discloses a film cutting mechanism, sucking disc group sets up first mounting panel with on the second mounting panel.

A film cutting method provides a film cutting mechanism, and comprises the following steps:

conveying a film roll on a conveyor belt to enable a film to pass through a first upper clamping piece, a second upper clamping piece and a first lower clamping piece;

step two, controlling the conveyor belt to stop so that the position to be cut of the film is positioned below the transverse cutter mechanism;

step three, the position sensor detects the deflection angle and the distance of the film to be cut and feeds the deflection angle and the distance back to the control system;

step four, controlling the rotation of the rotary driving piece to adjust the cutting direction of the transverse cutter to be parallel to the direction of the film to be cut;

controlling the driving of the translation driving piece to move the transverse cutter so that the cutting path is aligned to the to-be-cut line of the film;

controlling the pressing plate and the first rotating plate to be close to each other so that the first upper clamping piece, the second upper clamping piece, the first lower clamping piece and the second lower clamping piece clamp the film to be cut;

controlling an upper clamping piece driving piece to drive the first upper clamping piece and the first lower clamping piece to move away from the second upper clamping piece and the second lower clamping piece in a torque fixing mode so as to tension the film;

step eight, controlling a transverse cutter to cut off the film along the cutting track, and conveying the film onto a second conveying belt after the film is cut off;

moving the mechanical arm above the second conveying belt, adsorbing and fixing the film through a sucker group at the bottom of the mechanical arm, moving the film through a film transfer mechanism, driving the film to move above a bearing table, positioning the position of a line to be cut of the film by using a position sensor, enabling the line to be cut of the film to be positioned right above a gap, and then lowering the mechanical arm to place the film on the bearing table;

step ten, controlling a compression plate on the mechanical arm to descend and respectively compressing two sides of the film on the first bearing table and the second bearing table; driving the first bearing table to move away from the second bearing table to tension the film; detecting the deflection angle and the distance of the film to be cut by using a position sensor, feeding the deflection angle and the distance back to a control system, and controlling a position adjusting assembly to drive a second rotating plate and a longitudinal cutter to change the cutting track of the longitudinal cutter so that the cutting track of the longitudinal cutter is collinear with the projection of a to-be-cut line of the film on a horizontal plane;

step eleven, controlling the longitudinal cutter to stretch out from the gap to cut off the film.

The utility model has the advantages that: the angle and the position of the cutting mechanism can be adjusted according to the deflection generated after the film coil stock is spread out and transmitted on the transmission line, so that the accuracy of film cutting is ensured;

the film tensioning mechanism is arranged to prevent the film from cracking in the cutting process.

Drawings

The technical solution of the present application is further explained below with reference to the drawings and the embodiments.

Fig. 1 is a schematic view of the overall structure of a film cutting mechanism according to an embodiment of the present application;

FIG. 2 is a schematic view of the overall structure of a transverse film cutting mechanism according to an embodiment of the present application;

FIG. 3 is a schematic perspective cross-sectional view of a transverse film cutting mechanism according to an embodiment of the present disclosure;

FIG. 4 is a schematic view of the overall structure of a film longitudinal cutting mechanism according to an embodiment of the present application;

fig. 5 is a schematic view of a lower structure of a carrier stage of a film longitudinal cutting mechanism according to an embodiment of the present application.

The reference numbers in the figures are:

1 machine frame

2 conveyor belt

3 film transversely cuts mechanism

4 longitudinal film cutting mechanism

6 film transfer mechanism

21 first conveyor belt

22 second conveyor belt

31 base

32 translation plate

33 first rotating plate

34 pressing plate

35 transverse cutter mechanism

41 bottom plate

42 bearing table

43 second rotating plate

44 position adjustment assembly

45 longitudinal cutter mechanism

60 fixed plate

61 first mounting plate

62 second mounting plate

63 pressure strip

64 suction cup group

65 mechanical arm

321 translational drive member

331 rotating drive member

341 pressing plate driving piece

351 transverse cutter

361 first upper clip

362 second upper jaw

363 first lower jaw

364 second lower jaw

420 gap

421 first bearing table

422 second bearing table

451 longitudinal cutter

631 hold-down plate drive

3611 driving piece for upper clip

4211 driving unit.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, unless otherwise specified, "a plurality" means two or more.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.

The technical solutions of the present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example 1

The present embodiment provides a film cutting mechanism, as shown in fig. 1, including:

a frame 1;

a first conveyor belt 21 provided on the frame 1;

the second conveyor belt 22 is arranged on the rack 1 and is positioned at one end of the first conveyor belt 21 along the conveying direction;

the film transverse cutting mechanism 3 is arranged between the first conveyor belt 21 and the second conveyor belt 22 and is used for cutting the film roll into sections;

the film longitudinal cutting mechanism 4 is arranged on the rack 1 and is used for further cutting the film cut into sections into a plurality of pieces;

the film transfer mechanism 6 is used for transferring the film cut by the film transverse cutting mechanism 3 to the film longitudinal cutting mechanism 4;

the film transverse cutting mechanism 3 and the film longitudinal cutting mechanism 4 are both provided with cutter mechanisms capable of adjusting cutting tracks.

The film cutting mechanism of the embodiment is used for cutting the film, the film roll is conveyed on the conveyor belt, the film is cut in the width direction after passing through the film transverse cutting mechanism 3, the cut film is conveyed to the position of the second conveyor belt 22, and then the film transfer mechanism 6 moves the cut film to the film longitudinal cutting mechanism 4 for further cutting in the other direction.

Example 2

The present embodiment provides a film cutting mechanism, as shown in fig. 1 to 5, including:

a frame 1;

a first conveyor belt 21 provided on the frame 1;

and the film transfer mechanism 6 is used for transferring the film which is cut by the film transverse cutting mechanism 3 to the film longitudinal cutting mechanism 4.

Further, the film transverse cutting mechanism 3 includes:

a base 31;

a translation plate 32 that can be displaced in a horizontal first direction by a translation drive 321;

a first rotation plate 33 mounted on the translation plate 32 and capable of rotating relative to the translation plate 32 by the rotation driving member 331;

a pressing plate 34 connected to the first rotating plate 33 through a pressing plate driving member 341, wherein the pressing plate driving member 341 is configured to drive the pressing plate 34 to move closer to or away from the first rotating plate 33, so as to clamp or release the film;

and a transverse cutter mechanism 35 connected to the first rotating plate 33, and having a transverse cutter 351, wherein the transverse cutter 351 can cut the film between the pressing plate 34 and the first rotating plate 33 along a cutting track, and the cutting track of the transverse cutter 351 can be changed along with the displacement of the translation plate 32 and/or the rotation of the first rotating plate 33.

Further, the film longitudinal cutting mechanism 4 includes:

a bottom plate 41;

a carrying table 42 for carrying a film, having a slit 420 for passing a cutter therethrough;

a second rotating plate 43 connected to the base plate 41;

the film pressing mechanism is arranged above the bearing table 42 and used for pressing the film;

a longitudinal cutter mechanism 45 mounted on the second rotating plate 43, wherein the longitudinal cutter mechanism 45 has a longitudinal cutter 451 for cutting the film, and the longitudinal cutter 451 can move along the slit 420 to cut the film on the bearing table 42;

the longitudinal cutter 451 and the second rotating plate 43 can change the cutting track of the longitudinal cutter 451 under the driving of the position adjusting assembly 44.

Further, the film cutting mechanism of this embodiment still includes:

a first upper jaw 361 connected to the pressing plate 34;

a second upper jaw 362 connected to the pressing plate 34, located at one side of the first upper jaw 361, and arranged in parallel with the first upper jaw 361;

a first lower jaw 363 coupled to the first rotation plate 33 in alignment with the first upper jaw 361;

a second lower jaw 364 coupled to the first rotation plate 33 in alignment with the second upper jaw 362;

the first upper jaw 361 and the second upper jaw 362 can be simultaneously close to or far from the first lower jaw 363 and the second lower jaw 364;

gaps are formed between the first upper jaw 361 and the second upper jaw 362 and between the first lower jaw 363 and the second lower jaw 364, so that a cutting channel for the transverse cutter to pass through is formed.

Further, the first upper jaw 361 is connected to the pressing plate 34 by an upper jaw driving member 3611, and the upper jaw driving member 3611 is configured to drive the first upper jaw 361 to move away from or close to the second upper jaw 362; the first lower jaw 363 is disposed on the sliding track of the first rotating plate 33 and can freely move;

after the first upper jaw 361 and the second upper jaw 362 approach to the first lower jaw 363 and the second lower jaw 364 to clamp the film, the first upper jaw 361 can be driven by the upper jaw driving part 3611 to be away from the second upper jaw 362, and the first lower jaw 363 moves together with the first upper jaw 361 due to the driving of the friction force to tighten the film.

Further, the bearing table 42 is divided into a first bearing table 421 and a second bearing table 422, and the gap 420 is formed between the first bearing table 421 and the second bearing table 422; the second bearing table 422 is fixed on the bottom plate 41, and the first bearing table 421 is mounted on a sliding rail of the bottom plate 41 and can move away from or close to the second bearing table 422 along the sliding rail under the driving of the driving member 4211.

Further, the film transfer mechanism 6 includes:

a robot arm 65 that is movable in three axes on the frame 1;

and the sucker group 64 is used for sucking and grabbing the film.

Preferably, in the film cutting mechanism of the present embodiment, the lower end of the mechanical arm 65 is connected to the film pressing mechanism, and the film pressing mechanism includes:

a fixing plate 60 fixed to a lower end of the robot arm 65;

a first mounting plate 61 mounted on a sliding rail of the fixing plate 60, the first mounting plate 61 being freely movable along the sliding rail;

a second mounting plate 62 fixed to the fixing plate 60;

a pressing plate 63 which is provided on the first mounting plate 61 and the second mounting plate 62 and can be lifted and lowered by a pressing plate driving member 631;

after the compression plate 63 descends, the two sides of the film can be respectively compressed on the first bearing table 421 and the second bearing table 422, and the first bearing table 421 is far away from the second bearing table 422, and the first mounting plate 61 can be driven by friction force to move together to tension the film.

Further, the suction cup group 64 is disposed on the first mounting plate 61 and the second mounting plate 62.

Further, the film transverse cutting mechanism 3 and the film longitudinal cutting mechanism 4 of the present embodiment are both provided with position sensors for determining the position and direction of the film, and the working principle of the position sensors is to indirectly determine the position and direction of the film by sensing the position of a specific object with a fixed position on the film. The upper clamping piece driving part 3611 and the driving part 4211 in the embodiment are both torque motors, when the torque motors output pulling force, compared with a common motor, the torque motors do not output at rated power but at rated torque, the rated output torque of the torque motors is used for providing a determined pulling force before the film is tensioned, then the torque motors are stopped and positioned, and then when the cutter transversely cuts the film, the film cannot be twisted due to insufficient tensioning force and cannot be cracked due to overlarge tensioning force; in the process of cutting the film by the cutter, the torque motor is not moved, and the tension force of the film is naturally reduced due to gradual cutting.

A film cutting method provides the film cutting mechanism of the embodiment, and comprises the following steps:

firstly, conveying a film roll on a conveyor belt 2 to enable the film to pass through a first upper clamping piece 361 and a second upper clamping piece 362 and a first lower clamping piece 363 and a second lower clamping piece 364;

step two, controlling the conveyor belt 2 to stop, so that the position to be cut of the film is positioned below the transverse cutter mechanism 35;

step four, controlling the rotation of the rotation driving member 331 to adjust the cutting direction of the transverse cutter 351 to be parallel to the direction of the film to be cut;

controlling the driving of the translation driving member 321 to move the transverse cutter 351 so that the cutting path is aligned with the cutting line of the film;

step six, controlling the pressing plate 34 and the first rotating plate 33 to approach each other so that the first upper jaw 361 and the second upper jaw 362, the first lower jaw 363 and the second lower jaw 364 clamp the film to be cut;

step seven, controlling the upper clip driving element 3611 to drive the first upper clip 361 and the first lower clip 363 to move away from the second upper clip 362 and the second lower clip 364 in a fixed torque manner, so as to tension the film;

step eight, controlling the transverse cutter 351 to cut off the film along the cutting track, and conveying the cut film to the second conveyor belt 22;

step nine, moving the mechanical arm 65 to the position above the second conveyor belt 22, adsorbing and fixing the film through the suction cup group 64 at the bottom of the mechanical arm 65, moving the film through the film transfer mechanism 6, driving the film to move to the position above the bearing table 42, positioning the position of a line to be cut of the film by using a position sensor, enabling the line to be cut of the film to be positioned right above the gap 420, and then descending the mechanical arm 65 to place the film on the bearing table 42;

step ten, controlling the compression plate 63 on the mechanical arm 65 to descend and respectively compress the two sides of the film on the first bearing table 421 and the second bearing table 422; driving the first stage 421 to move away from the second stage 422 to tension the film; the deflection angle and the distance of the film to be cut are detected by using a position sensor and fed back to a control system, and a control position adjusting assembly 44 drives the second rotating plate 43 and the longitudinal cutter 451 to change the cutting track of the longitudinal cutter 451, so that the cutting track of the longitudinal cutter 451 is collinear with the projection of the corresponding cutting line of the film on the horizontal plane;

step eleven, the longitudinal cutter 451 is controlled to extend out from the gap 420 to cut the film.

In light of the foregoing description of the preferred embodiments according to the present application, it is to be understood that various changes and modifications may be made without departing from the spirit and scope of the invention. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims

1. A film cutting mechanism, comprising:

a frame (1);

a first conveyor belt (21) arranged on the frame (1);

the second conveyor belt (22) is arranged on the rack (1) and is positioned at one end of the first conveyor belt (21) along the conveying direction;

the film transverse cutting mechanism (3) is arranged between the first conveyor belt (21) and the second conveyor belt (22) and is used for cutting the film roll into sections;

the film longitudinal cutting mechanism (4) is arranged on the rack (1) and is used for further cutting the film cut into sections into a plurality of pieces;

the film transfer mechanism (6) is used for transferring the film cut by the film transverse cutting mechanism (3) to the film longitudinal cutting mechanism (4);

the film transverse cutting mechanism (3) and the film longitudinal cutting mechanism (4) are both provided with cutter mechanisms capable of adjusting cutting tracks; the film transverse cutting mechanism (3) and the film longitudinal cutting mechanism (4) are respectively provided with a position sensor for judging the position and the direction of the film.

2. The film cutting mechanism according to claim 1, wherein the film transverse cutting mechanism (3) comprises:

a base (31);

a translation plate (32) which can be displaced in a horizontal first direction by a translation drive member (321);

a first rotating plate (33) which is arranged on the translation plate (32) and can rotate relative to the translation plate (32) under the driving of a rotating driving piece (331);

the pressing plate (34) is connected with the first rotating plate (33) through a pressing plate driving piece (341), and the pressing plate driving piece (341) is used for driving the pressing plate (34) to be close to or far away from the first rotating plate (33) so as to clamp or release the film;

and a transverse cutter mechanism (35) connected to the first rotating plate (33) and provided with a transverse cutter (351), wherein the transverse cutter (351) can cut the film between the pressure plate (34) and the first rotating plate (33) along a cutting track, and the cutting track of the transverse cutter (351) can be changed along with the displacement of the translating plate (32) and/or the rotation of the first rotating plate (33).

3. The film cutting mechanism according to claim 2, wherein the film longitudinal cutting mechanism (4) comprises:

a base plate (41);

a bearing table (42) used for bearing the film and provided with a gap (420) for the cutter to pass through;

a second rotating plate (43) connected to the base plate (41);

the film pressing mechanism is arranged above the bearing table (42) and used for pressing the film;

a longitudinal cutter mechanism (45) mounted on the second rotating plate (43), wherein the longitudinal cutter mechanism (45) is provided with a longitudinal cutter (451) for cutting the film, and the longitudinal cutter (451) can move along the gap (420) to cut the film on the bearing table (42);

the longitudinal cutter (451) and the second rotating plate (43) can change the cutting track of the longitudinal cutter (451) under the drive of the position adjusting assembly (44).

4. The film cutting mechanism as set forth in claim 3, further comprising:

a first upper jaw (361) connected to the platen (34);

the second upper clamping piece (362) is connected to the pressing plate (34), is positioned on one side of the first upper clamping piece (361) and is parallel to the first upper clamping piece (361);

a first lower jaw (363) connected to the first rotation plate (33) in alignment with the first upper jaw (361);

a second lower jaw (364) attached to the first rotation plate (33) in alignment with the second upper jaw (362);

the first upper jaw (361) and the second upper jaw (362) can be simultaneously close to or far away from the first lower jaw (363) and the second lower jaw (364);

gaps are arranged between the first upper clamping piece (361) and the second upper clamping piece (362) and between the first lower clamping piece (363) and the second lower clamping piece (364) to form a cutting channel for the transverse cutter to pass through.

5. The film cutting mechanism according to claim 4,

the first upper clamping piece (361) is connected to the pressing plate (34) through an upper clamping piece driving piece (3611), and the upper clamping piece driving piece (3611) is used for driving the first upper clamping piece (361) to be far away from or close to the second upper clamping piece (362); the first lower jaw (363) is provided on a sliding rail on the first rotation plate (33) and can freely move,

after the first upper clamping piece (361) and the second upper clamping piece (362) are close to the first lower clamping piece (363) and the second lower clamping piece (364) to clamp the film, the first upper clamping piece (361) can be far away from the second upper clamping piece (362) under the driving of an upper clamping piece driving piece (3611), and the first lower clamping piece (363) is driven by friction force to move together with the first upper clamping piece (361) to tighten the film.

6. A film cutting mechanism according to any one of claims 3-5, wherein said carrier (42) is divided into a first carrier (421) and a second carrier (422), said first carrier (421) and said second carrier (422) having said gap (420) formed therebetween; the second bearing table (422) is fixed on the bottom plate (41), the first bearing table (421) is installed on a sliding rail of the bottom plate (41), and can move away from or close to the second bearing table (422) along the sliding rail under the driving of a driving piece (4211).

7. Film cutting mechanism according to any of the claims 3-5, characterized in that the film transfer mechanism (6) comprises:

a robot arm (65) capable of three-axis movement on the gantry (1);

and the sucker group (64) is used for adsorbing and grabbing the film.

8. The film cutting mechanism as set forth in claim 7, wherein a lower end of said mechanical arm (65) is connected to said film pressing mechanism, said film pressing mechanism comprising:

a fixing plate (60) fixed to the lower end of the robot arm (65);

a first mounting plate (61) mounted on a sliding rail of the fixing plate (60), the first mounting plate (61) being freely movable along the sliding rail;

a second mounting plate (62) fixed to the fixing plate (60);

the compression plate (63) is arranged on the first mounting plate (61) and the second mounting plate (62) and can be driven by a compression plate driving piece (631) to lift;

after the compression plate (63) descends, the two sides of the film can be respectively compressed on the first bearing table (421) and the second bearing table (422), and the first bearing table (421) is far away from the second bearing table (422), and the first mounting plate (61) can be driven by friction force to move together to tension the film.

9. The film cutting mechanism of claim 8, wherein the suction cup set (64) is disposed on the first mounting plate (61) and the second mounting plate (62).