A film automatic laminating line

Abstract

The present invention relates to the technical field of film pasting for shell panels, and in particular discloses an automatic film pasting line, comprising a frame, a film supply mechanism, a film folding mechanism and a pasting mechanism arranged on the frame; the pasting mechanism comprises a first bracket, a first rolling member and a carrier rotatably arranged on the first bracket, a first driving member for driving the carrier to rotate, and a second rolling member rotatably arranged on the carrier; the rotation axis of the first rolling member and the rotation axis of the carrier are horizontally arranged, and the rotation axis of the first rolling member and the rotation axis of the carrier are cross-arranged; the rotation axis of the second rolling member is cross-arranged with the horizontal plane, and the rotation axis of the second rolling member is cross-arranged with the rotation axis of the first rolling member; in actual use, the film supply mechanism automatically supplies film sheets, the film folding mechanism bends the film sheets supplied by the film supply mechanism to form film components, and the pasting mechanism pastes the film components bent by the film folding mechanism onto the shell panels, thereby realizing automatic film pasting of the shell panels and improving film pasting efficiency and film pasting yield.

Description

Technical Field

[0001] The invention relates to the technical field of film laminating for shell panels, and in particular discloses an automatic film laminating line. Background Art

[0002] Lithium batteries are one of the commonly used new energy sources. For example, most electric vehicles are powered by lithium batteries. During the installation of lithium batteries, it is often necessary to install the lithium batteries in a protective shell first. In order to improve the performance of the lithium batteries, it is often necessary to attach an insulating film made of insulating material to the inner wall of the protective shell. In the prior art, multiple diaphragms need to be cut into multiple pieces or a diaphragm needs to be cut into multiple pieces, and then they are attached to the protective shell respectively. The attachment efficiency is low and cannot meet the needs of actual production. Summary of the invention

[0003] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to provide an automatic film laminating line, in which a film supply mechanism automatically supplies film sheets, a film folding mechanism bends the film sheets supplied by the film supply mechanism to form film parts, and a laminating mechanism laminates the film parts bent by the film folding mechanism onto a shell plate, thereby realizing automatic laminating of the shell plate and improving the laminating efficiency and yield.

[0004] To achieve the above-mentioned purpose, the present invention provides an automatic film bonding line, including a frame, a film supply mechanism, a film folding mechanism and a bonding mechanism arranged on the frame, the film supply mechanism is used to supply film sheets, the film folding mechanism is used to bend the film sheets to form film pieces, and the bonding mechanism is used to bond the film pieces to external shell plate members; the bonding mechanism includes a first bracket, a first rolling member and a carrier rotatably arranged on the first bracket, a first driving member for driving the carrier to rotate, and a second rolling member rotatably arranged on the carrier; the rotation axis of the first rolling member and the rotation axis of the carrier are horizontally arranged, and the rotation axis of the first rolling member and the rotation axis of the carrier are cross-arranged; the rotation axis of the second rolling member is cross-arranged with the horizontal plane, and the rotation axis of the second rolling member is cross-arranged with the rotation axis of the first rolling member.

[0005] There are two carriers, the middle parts of the two carriers are rotatably arranged on the first bracket respectively, the second rolling member is rotatably arranged on one end of the carrier, and the output end of the first driving member acts on the other end of the two carriers to make the two carriers rotate synchronously.

[0006] Among them, the first bracket is slidably provided with a slider, the slider is rotatably provided with two connecting arms, one end of the connecting arm away from the slider is rotatably provided at the other end of the carrier, the rotation axis of the carrier and the first bracket, the rotation axis of the slider and the connecting arm, and the rotation axis of the connecting arm and the carrier are arranged in parallel, and the first driving member is used to drive the slider to slide.

[0007] Among them, the bonding mechanism also includes a third rolling member rotatably arranged on the first bracket, the rotation axis of the third rolling member is vertically arranged, the first rolling member is used to roll and stick the bottom wall of the film member to the bottom wall of the shell plate member, the second rolling member is used to roll and stick the bending part of the film member to the corner of the shell plate member, and the third rolling member is used to roll and stick the side wall of the film member to the side wall of the shell plate member.

[0008] Among them, the second rolling part includes a rotatable shaft body and an elastic ring sleeved on the outside of the shaft body, the elastic ring is spindle-shaped, the outer diameter of the middle part of the elastic ring is larger than the radius of the two ends of the elastic ring, the middle part of the elastic ring is used to roll and stick the bending part of the membrane part to the corner of the shell plate part, and the two ends of the elastic ring are respectively used to roll and stick one end of the bottom wall of the membrane part to one end of the bottom wall of the shell plate part, and to roll and stick one end of the side wall of the membrane part to one end of the side wall of the shell plate part.

[0009] Among them, the film folding mechanism includes a rotatably arranged creasing wheel, the rotation axis of the creasing wheel is horizontally arranged, the creasing wheel is conical, the outer diameter of the first end of the creasing wheel is larger than the outer diameter of the second end of the creasing wheel, one end of the diaphragm is attached to the outer side surface of the creasing wheel, and the edge of the first end of the creasing wheel is used to roll a bending mark in the middle of the diaphragm.

[0010] Among them, the film folding mechanism also includes a first guide unit, the first guide unit includes a first limit member, a first guide wheel and a second guide wheel which are rotatably arranged, the rotation axis of the first guide wheel is horizontally arranged, the angle between the rotation axis of the second guide wheel and the rotation axis of the first guide wheel is an acute angle, the outer side surface of the first guide wheel and the outer side surface of the second guide wheel respectively contact the film at both ends of the bending mark, and the first limit member is used to press the film after rolling by the indentation wheel on the outer side surface of the first guide wheel and the outer side surface of the second guide wheel.

[0011] Among them, the film folding mechanism also includes a second guide unit, the second guide unit includes a second limit member, a third guide wheel and a fourth guide wheel which are rotatably arranged, the rotation axis of the third guide wheel is horizontally arranged, and the rotation axis of the fourth guide wheel is vertically arranged, the third guide wheel and the fourth guide wheel are used to respectively resist the film at both ends of the bending mark after rolling by the first guide unit, and the second limit member is used to press the film after rolling by the first guide unit on the outer side surface of the third guide wheel and the outer side surface of the fourth guide wheel, so that the film is bent to form a film piece.

[0012] It also includes a heating mechanism arranged on the frame, the film is coated with hot melt adhesive, the heating mechanism is equipped with a UV lamp, the UV lamp is used to heat the hot melt adhesive on the film so that the hot melt adhesive is melted by heat, and the bonding mechanism presses the film heated by the heating mechanism and bonds it to the shell plate.

[0013] Among them, it also includes a conveying mechanism, which includes a second bracket, a conveying unit, a transfer unit and a lifting unit arranged on the second bracket, the conveying unit includes a plurality of rollers rotatably arranged on the second bracket, and a second driving member for driving the rollers to rotate, the plurality of rollers are arranged in parallel and coplanar, and the rollers are used to carry and drive the shell plate to move; the transfer unit includes a pushing member and a third driving member for driving the pushing member to move, the third driving member drives the pushing member to move the shell plate carried by the plurality of rollers to the lifting unit, and the lifting unit is used to drive the shell plate with the film to rise above the second bracket to facilitate the transfer of the shell plate.

[0014] The beneficial effects of the present invention are as follows: during actual use, the film supply mechanism automatically supplies film sheets, the film folding mechanism bends the film sheets supplied by the film supply mechanism to form film parts, and the bonding mechanism bonds the film parts bent by the film folding mechanism onto the shell plate parts, thereby realizing automatic film bonding of the shell plate parts and improving the film bonding efficiency and film bonding yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the laminating mechanism of the present invention;

[0017] Figure 3 It is a structural schematic diagram of the creasing wheel of the present invention;

[0018] Figure 4 It is a schematic structural diagram of the first guiding unit and the second guiding unit of the present invention.

[0019] Reference numerals include:

[0020] 1—Frame 2—Film supply mechanism 3—Film folding mechanism

[0021] 4—Laminating mechanism 5—First bracket 6—First rolling part

[0022] 7—carrier 8—first driving member 9—second rolling member

[0023] 11—slider 12—connecting arm 13—third rolling part

[0024] 14—Indentation wheel 15—First limiter 16—First guide wheel

[0025] 17—Second guide wheel 18—Second limiter 19—Third guide wheel

[0026] 21—Fourth guide wheel 22—Heating mechanism 23—Conveying mechanism

[0027] 24 - second bracket 25 - conveying unit 26 - transfer unit

[0028] 27—Lifting unit. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0030] See also Figures 1 to 4 As shown, an automatic film bonding line of the present invention includes a frame 1, a film supply mechanism 2, a film folding mechanism 3 and a bonding mechanism 4 installed on the frame 1, the film supply mechanism 2 is used to supply film sheets, the film folding mechanism 3 is used to bend the film sheets to form film pieces, and the bonding mechanism 4 is used to bond the film pieces to external shell plate parts; in this embodiment, the film sheet is in a reel shape, and the film supply mechanism 2 includes a rotatable turntable and a strip of film wound on the outside of the turntable.

[0031] The laminating mechanism 4 includes a first bracket 5 installed on the frame 1, a first rolling member 6 and a carrier 7 rotatably arranged on the first bracket 5, a first driving member 8 for driving the carrier 7 to rotate relative to the first bracket 5, and a second rolling member 9 rotatably arranged on the carrier 7.

[0032] The rotation axis of the first rolling member 6 and the rotation axis of the carrier 7 are arranged horizontally, and the rotation axis of the first rolling member 6 and the rotation axis of the carrier 7 are arranged crosswise; the rotation axis of the second rolling member 9 is arranged crosswise with the horizontal plane, and the rotation axis of the second rolling member 9 is arranged crosswise with the rotation axis of the first rolling member 6.

[0033] During actual use, the film supply mechanism 2 automatically supplies the film sheet, the film folding mechanism 3 bends the film sheet supplied by the film supply mechanism 2 to form a film member, and the bonding mechanism 4 bonds the film member bent by the film folding mechanism 3 to a shell plate member (such as a U-shaped shell plate member). With the help of the setting of the first rolling member 6, the bottom wall of the film member is rolled and bonded to the bottom wall of the shell plate member. With the help of the second rolling member 9, the side wall of the film member is rolled and bonded to the side wall of the shell plate member, thereby realizing automatic film bonding of the shell plate member and improving the film bonding efficiency and film bonding yield.

[0034] Of course, according to the actual size of the shell plate, the first driving member 8 drives the carrier 7 to move the second rolling member 9, thereby changing the position of the second rolling member 9 relative to the first bracket 5, so that the second rolling member 9 can be used with shell plates of various sizes.

[0035] There are two carriers 7, the middle parts of the two carriers 7 are rotatably set on the first bracket 5 respectively, the second rolling member 9 is rotatably set on one end of the carrier 7, and the output end of the first driving member 8 acts on the other end of the two carriers 7 to make the two carriers 7 rotate synchronously, so that the second rolling members 9 of the two carriers 7 are close to or away from each other.

[0036] In actual use, the shell plate is in a U-shape, the film is in a U-shape that matches the shell plate, and the second rolling members 9 of the two carriers 7 roll and paste the two ends of the film on the two sides of the shell plate. In addition, according to the size of the shell plate, the first driving member 8 drives the second rolling members 9 of the two carriers 7 to move closer to or away from each other, so that the pasting mechanism 4 can be compatible with shell plates of various sizes and structures, reducing the film pasting cost.

[0037] The first bracket 5 is slidably provided with a slider 11, and the slider 11 is rotatably provided with two connecting arms 12. One end of the connecting arm 12 away from the slider 11 is rotatably provided on the other end of the carrier 7. The rotation axis of the carrier 7 and the first bracket 5, the rotation axis of the slider 11 and the connecting arm 12, and the rotation axis of the connecting arm 12 and the carrier 7 are arranged in parallel. The first driving member 8 is used to drive the slider 11 to slide.

[0038] When the distance between the second rolling members 9 of the two carriers 7 needs to be adjusted, the first driving member 8 drives the slider 11 to slide relative to the first bracket 5. The sliding slider 11 drives the carrier 7 to rotate the second rolling member 9 via the connecting arm 12. With the help of a first driving member 8, the second rolling members 9 of the two carriers 7 can rotate synchronously to avoid uneven movement of the second rolling members 9 of the two carriers 7 and poor use, thereby ensuring the movement yield of the second rolling members 9 of the two carriers 7.

[0039] The bonding mechanism 4 also includes a third rolling member 13 rotatably arranged on the first bracket 5, and the rotation axis of the third rolling member 13 is vertically arranged. The first rolling member 6 is used to roll and stick the bottom wall of the film member to the bottom wall of the shell plate member, the second rolling member 9 is used to roll and stick the bending part of the film member to the corner of the shell plate member, and the third rolling member 13 is used to roll and stick the side wall of the film member to the side wall of the shell plate member.

[0040] With the cooperation of the first rolling member 6, the second rolling member 9, and the third rolling member 13, the L-shaped film member is firmly attached to the L-shaped shell member, thereby improving the attaching yield of the film member and the shell member. Preferably, there are two first rolling members 6, the two first rolling members 6 are collinearly arranged, the rotation axes of the two first rolling members 6 coincide, and the two first rolling members 6 are used to roll the left and right ends of the bottom wall of the film member, respectively.

[0041] The second rolling member 9 includes a rotatable shaft body and an elastic ring sleeved on the outside of the shaft body. The elastic ring is spindle-shaped. Along the central axial direction of the elastic ring, the outer diameter of the middle part of the elastic ring is larger than the radius of the two ends of the elastic ring. The middle part of the elastic ring is used to roll and stick the bending part of the membrane member to the corner of the shell plate member, and the two ends of the elastic ring are respectively used to roll and stick one end of the bottom wall of the membrane member to one end of the bottom wall of the shell plate member, and to roll and stick one end of the side wall of the membrane member to one end of the side wall of the shell plate member.

[0042] Preferably, the elastic ring is made of silicone, and the second rolling member 9 is configured so that the elastic ring can be firmly pressed against the membrane. The softness of the elastic ring can prevent the membrane from being damaged by the second rolling member 9; the elastic deformation force of the elastic ring can tightly press the membrane against the shell plate, thereby ensuring that the membrane is firmly attached to the shell plate. The elastic ring can avoid gaps between the bending part of the membrane and the corner of the shell plate, thereby improving the bonding yield of the membrane and the shell plate.

[0043] The film folding mechanism 3 includes a rotatably arranged creasing wheel 14, the rotation axis of the creasing wheel 14 is arranged horizontally, the creasing wheel 14 is conical, the outer diameter of the first end of the creasing wheel 14 is larger than the outer diameter of the second end of the creasing wheel 14, one end of the diaphragm is attached to the outer side surface of the creasing wheel 14, and the edge of the first end of the creasing wheel 14 is used to roll a bending mark in the middle of the diaphragm.

[0044] In actual use, the creasing wheel 14 is located below the film output by the film supply mechanism 2. When the film output by the film supply mechanism 2 moves, the film is attached to the outer conical surface of the creasing wheel 14. As the creasing wheel 14 rotates, the edge of the first end of the creasing wheel 14 rolls out a bending mark in the middle of the film, so that the film is pre-bent.

[0045] The film folding mechanism 3 also includes a first guide unit, which includes a first limit member 15, a first guide wheel 16 and a second guide wheel 17 that are rotatably arranged. The rotation axis of the first guide wheel 16 is horizontally arranged, and the angle between the rotation axis of the second guide wheel 17 and the rotation axis of the first guide wheel 16 is an acute angle. The outer side surfaces of the first guide wheel 16 and the outer side surfaces of the second guide wheel 17 respectively contact the film at both ends of the bending mark, and the first limit member 15 is used to press the film after being rolled by the indentation wheel 14 onto the outer side surfaces of the first guide wheel 16 and the outer side surfaces of the second guide wheel 17.

[0046] After the pre-bending process of the creasing wheel 14, with the help of the cooperation of the first limit member 15, the first guide wheel 16 and the second guide wheel 17 of the first guide unit, the diaphragm pre-bent by the creasing wheel 14 is bent for the first time by the first guide unit, so that the diaphragm is bent into a V shape, and the angle between the two ends of the diaphragm is an obtuse angle.

[0047] The film folding mechanism 3 also includes a second guide unit, which includes a second limit member 18, a rotatable third guide wheel 19 and a fourth guide wheel 21. The rotation axis of the third guide wheel 19 is horizontally arranged, and the rotation axis of the fourth guide wheel 21 is vertically arranged. The third guide wheel 19 and the fourth guide wheel 21 are used to respectively resist the film at both ends of the bending mark after rolling by the first guide unit. The second limit member 18 is used to press the film after rolling by the first guide unit on the outer side surface of the third guide wheel 19 and the outer side surface of the fourth guide wheel 21, so that the film is bent to form a film piece.

[0048] The membrane sheet bent into a V-shape by the first guide unit moves to the second guide unit for a second bending, and the membrane sheet is bent into a membrane piece by means of the rolling cooperation of the second stopper 18, the third guide wheel 19, and the fourth guide wheel 21. At this time, the bottom wall of the membrane sheet and the side wall of the membrane sheet form an L-shape. Of course, both sides of the membrane sheet can be bent, and at this time the membrane piece can be U-shaped.

[0049] It also includes a heating mechanism 22 arranged on the frame 1, the film is coated with hot melt adhesive, the heating mechanism 22 is equipped with a UV lamp (i.e., an ultraviolet lamp), the UV lamp is used to heat the hot melt adhesive on the film so that the hot melt adhesive is melted by the heat, and the bonding mechanism 4 presses the film heated by the heating mechanism 22 to bond it to the shell plate.

[0050] In actual use, hot melt adhesive is pre-coated on the membrane. When the membrane needs to be attached to the shell plate, the UV (Ultra-Violet Ray) lamp of the heating mechanism 22 is used to irradiate the membrane to melt the hot melt adhesive on the membrane. After the bonding mechanism 4 bonds the membrane to the shell plate, the membrane and the shell plate are firmly bonded together with the hot melt adhesive that has been cooled and solidified again.

[0051] It also includes a conveying mechanism 23, which includes a second bracket 24, a conveying unit 25, a transfer unit 26 and a lifting unit 27 installed on the second bracket 24, and the conveying unit 25 includes a plurality of rollers rotatably arranged on the second bracket 24, and a second driving member for driving the rollers to rotate, and the plurality of rollers are arranged in parallel and coplanar, and the rollers are used to carry and drive the shell plate to move. In actual use, the shell plate is placed on the plurality of rollers, and then the second driving member drives all the rollers to rotate, and the rotating rollers can drive the shell plate to move automatically, without the need for the staff to manually move the shell plate.

[0052] The transfer unit 26 includes a pushing member and a third driving member for driving the pushing member to move. The third driving member drives the pushing member to move the shell plate member carried by multiple rollers to the lifting unit 27. After the conveying unit 25 moves the shell plate member to the desired position, the third driving member drives the pushing member to move. With the help of the resistance of the pushing member to the shell plate member, the shell plate member is driven to move along the length direction of the roller until the shell plate member is moved to the lifting unit 27.

[0053] The lifting unit 27 is used to drive the shell panel with the film to rise above the second bracket 24 to facilitate the transfer of the shell panel. After the transfer unit 26 moves the shell panel to the lifting unit 27, the lifting unit 27 drives the shell panel to rise until the shell panel moves to the top of the second bracket 24. Then an external robot can remove the shell panel above the lifting unit 27 to avoid the robot colliding with the second bracket 24 and causing improper use.

[0054] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. An automatic film laminating line, comprising a frame, a film supply mechanism, a film folding mechanism and a laminating mechanism arranged on the frame, wherein the film supply mechanism is used to supply film sheets, the film folding mechanism is used to bend the film sheets to form film pieces, and the laminating mechanism is used to laminarize the film pieces on external shell plates; characterized in that: The laminating mechanism comprises a first bracket, a first rolling member and a carrier rotatably arranged on the first bracket, a first driving member for driving the carrier to rotate, and a second rolling member rotatably arranged on the carrier; the rotation axis of the first rolling member and the rotation axis of the carrier are horizontally arranged, and the rotation axis of the first rolling member and the rotation axis of the carrier are cross-arranged; the rotation axis of the second rolling member is cross-arranged with the horizontal plane, and the rotation axis of the second rolling member is cross-arranged with the rotation axis of the first rolling member; the film folding mechanism comprises a rotatably arranged creasing wheel, the rotation axis of the creasing wheel is horizontally arranged, the creasing wheel is conical, the outer diameter of the first end of the creasing wheel is larger than the outer diameter of the second end of the creasing wheel, one end of the diaphragm is attached to the outer side surface of the creasing wheel, and the edge of the first end of the creasing wheel is used to roll a bending mark in the middle of the diaphragm; the film folding mechanism also comprises a first guide unit, the first guide unit comprises a first limit member, a first guide wheel and a second guide wheel rotatably arranged, the rotation axis of the first guide wheel is horizontally arranged, and the rotation axis of the second guide wheel is The angle between the rotation axes of the first guide wheel is an acute angle, and the outer side surfaces of the first guide wheel and the second guide wheel respectively contact the diaphragms at both ends of the bending mark, and the first limiting member is used to press the diaphragm after rolling by the indentation wheel on the outer side surfaces of the first guide wheel and the second guide wheel. The film folding mechanism also includes a second guide unit, and the second guide unit includes a second limiting member, a third guide wheel and a fourth guide wheel that are rotatably arranged. The rotation axis of the third guide wheel is horizontally arranged, and the rotation axis of the fourth guide wheel is vertically arranged. The third guide wheel and the fourth guide wheel are used to respectively contact the diaphragms at both ends of the bending mark after rolling by the first guide unit, and the second limiting member is used to press the diaphragm after rolling by the first guide unit on the outer side surfaces of the third guide wheel and the outer side surfaces of the fourth guide wheel, so that the diaphragm is bent to form a film part. There are two carriers, and the middle parts of the two carriers are respectively rotatably arranged on the first bracket, and the second rolling member is rotatably arranged at one end of the carrier, and the output end of the first driving member acts on the other end of the two carriers to make the two carriers rotate synchronously.

2. The automatic film bonding line according to claim 1, characterized in that: The first bracket is slidably provided with a slider, and the slider is rotatably provided with two connecting arms. One end of the connecting arm away from the slider is rotatably provided at the other end of the carrier. The rotation axis of the carrier and the first bracket, the rotation axis of the slider and the connecting arm, and the rotation axis of the connecting arm and the carrier are arranged in parallel. The first driving member is used to drive the slider to slide.

3. The automatic film bonding line according to claim 1, characterized in that: The bonding mechanism also includes a third rolling member rotatably arranged on the first bracket, and the rotation axis of the third rolling member is vertically arranged. The first rolling member is used to roll and stick the bottom wall of the film member to the bottom wall of the shell plate member, the second rolling member is used to roll and stick the bending part of the film member to the corner of the shell plate member, and the third rolling member is used to roll and stick the side wall of the film member to the side wall of the shell plate member.

4. The automatic film bonding line according to claim 1, characterized in that: The second rolling part includes a rotatable shaft body and an elastic ring sleeved on the outside of the shaft body, the elastic ring is spindle-shaped, the outer diameter of the middle part of the elastic ring is larger than the radius of the two ends of the elastic ring, the middle part of the elastic ring is used to roll and stick the bending part of the membrane part to the corner of the shell plate part, and the two ends of the elastic ring are respectively used to roll and stick one end of the bottom wall of the membrane part to one end of the bottom wall of the shell plate part, and to roll and stick one end of the side wall of the membrane part to one end of the side wall of the shell plate part.

5. The automatic film bonding line according to claim 1, characterized in that: It also includes a heating mechanism arranged on the frame, the film is coated with hot melt adhesive, the heating mechanism is equipped with a UV lamp, the UV lamp is used to heat the hot melt adhesive on the film so that the hot melt adhesive is melted by heat, and the bonding mechanism presses the film heated by the heating mechanism and bonds it to the shell plate.

6. The automatic film bonding line according to claim 1, characterized in that: The conveying mechanism also includes a second bracket, a conveying unit, a transfer unit and a lifting unit arranged on the second bracket, the conveying unit includes a plurality of rollers rotatably arranged on the second bracket, and a second driving member for driving the rollers to rotate, the plurality of rollers are arranged in parallel and coplanar, and the rollers are used to carry and drive the shell plate to move; the transfer unit includes a pushing member and a third driving member for driving the pushing member to move, the third driving member drives the pushing member to move the shell plate carried by the plurality of rollers to the lifting unit, and the lifting unit is used to drive the shell plate with the film to rise above the second bracket to facilitate the transfer of the shell plate.

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