CN213921632U

CN213921632U - Film coating machine

Info

Publication number: CN213921632U
Application number: CN202022396792.2U
Authority: CN
Inventors: 不公告发明人
Original assignee: Wuxi Lead Intelligent Equipment Co Ltd
Current assignee: Wuxi Lead Intelligent Equipment Co Ltd
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2021-08-10
Anticipated expiration: 2030-10-23

Abstract

The application discloses a film wrapping machine, which comprises a draw belt assembly, a first clamping assembly and a clamping roller assembly, wherein the draw belt assembly is used for fixing and drawing the free end of an insulating film; the first clamping assembly is arranged on one side of the insulating film and clamps the battery cell, the main surfaces on the two sides of the battery cell are perpendicular to the length direction of the insulating film, the battery cell is further driven by the first clamping assembly, and the end face of the battery cell is in contact with the insulating film; the clamping roller assembly comprises a first clamping roller and a second clamping roller which are positioned on the other side of the insulating film and are arranged side by side, the first clamping assembly drives the battery cell and the insulating film to enter a spacing area between the first clamping roller and the second clamping roller, and the first clamping roller and the second clamping roller press the insulating film on the main surfaces of the two sides of the battery cell so as to coat the main surfaces of the two sides of the battery cell. This application coating machine realizes the automatic diolame of electric core, has improved the diolame quality.

Description

Film coating machine

Technical Field

The application relates to the technical field of electric core film coating, in particular to a film coating machine.

Background

The existing part of coating machines are used for coating the battery cell, wherein the battery cell is horizontally laid for transverse coating, and the coating quality of the coating machine is reduced due to the fact that the exposed length of a blue film is long and dust is easily polluted.

SUMMERY OF THE UTILITY MODEL

The application provides a coating machine to solve the problem that the exposed length of current blue membrane is longer, is infected with the dust easily, and the diolame quality is low.

In order to solve the technical problem, the application provides a coating machine, includes: a pull tape assembly fixing and pulling a free end of the insulating film; the first clamping assembly is arranged on one side of the insulating film and clamps the battery cell, the main surfaces on two sides of the battery cell are perpendicular to the length direction of the insulating film, the battery cell is further driven by the first clamping assembly, and the end face of the battery cell is in contact with the insulating film; and the clamping roller assembly comprises a first clamping roller and a second clamping roller which are positioned on the other side of the insulating film and are arranged side by side, the first clamping assembly drives the battery cell and the insulating film to enter a spacing area between the first clamping roller and the second clamping roller, and the first clamping roller and the second clamping roller press the insulating film on the main surfaces of the two sides of the battery cell so as to coat the main surfaces of the two sides of the battery cell.

The first clamping roller is located on one side of the battery cell, the pull belt assembly and the second clamping roller are located on the other side of the battery cell, and the first clamping roller and the second clamping roller are respectively coated on the main surfaces of the two sides of the battery cell through insulating films.

Wherein, the coating machine further comprises a cutter component, the cutter component is positioned at the same side of the first clamping roller and used for cutting off the insulating film so as to reform the free end lapped on the first clamping roller, and the drawing belt component is set to move towards the first clamping roller and used for picking up the reformed free end and reversely pulling the insulating film.

Wherein, the cutter assembly is vertically arranged along the length direction of the insulating film in a sliding manner so as to cut off the insulating film.

Wherein the draw tape assembly further comprises: the first film drawing roller transmission mechanism is used for transmitting a film drawing roller of the pull belt assembly to be close to or far away from the first clamping roller along a first direction, wherein the first direction is the spacing direction of the first clamping roller and the second clamping roller; and the second film drawing roller transmission mechanism is used for driving the film drawing roller of the pull belt assembly to be close to or far away from the first clamping roller along a second direction, and the second direction is perpendicular to the first direction and the axial direction of the film drawing roller.

The second film drawing roller transmission mechanism drives the film drawing roller to reciprocate between a first position and a second position which are arranged at intervals along a second direction, wherein when the film drawing roller is located at the first position, the film drawing roller and the first clamping roller are parallel and level to each other along the second direction, and when the film drawing roller is located at the second position, the film drawing roller and the second clamping roller form a avoiding position along the second direction.

The film coating machine further comprises a second clamping assembly, the second clamping assembly is arranged on the other side of the insulating film and used for clamping the battery cell when the insulating film partially coats the main surfaces on the two sides of the battery cell; the first clamping assembly releases the battery cell, and the second clamping assembly further drives the battery cell so that the insulating film covers the main surfaces of the two sides of the battery cell.

Wherein, the second centre gripping subassembly includes: the first fixing plate is erected on the workbench; the two groups of pull-out plates are arranged on the first fixing plate in a sliding manner; and the first lower driving piece drives the two groups of pulling-out plates to approach or separate from each other so as to clamp or loosen the battery cell.

Wherein, the second centre gripping subassembly includes: a second fixing plate; at least one guide piece penetrates through the second fixing plate, one end of the guide piece is connected with the first fixing plate, and the other end of the guide piece is connected with the workbench; and the second lower driving part is connected with the first fixing plate so as to drive the first fixing plate to move up and down through the at least one guide part.

The film wrapping machine further comprises an unwinding assembly and a winding assembly, the unwinding assembly is used for unwinding a material roll, the material roll is formed by winding an insulating film and a diaphragm attached to at least one main surface of the insulating film, and the winding assembly is used for winding the diaphragm so as to tear off the diaphragm from the insulating film.

The beneficial effect of this application is: be different from prior art's the condition, this application provides a coating machine includes stretching strap subassembly, first centre gripping subassembly and double-layered roller assembly, and the stretching strap subassembly is fixed and draws the free end of holding the insulating film. The first clamping assembly is arranged on one side of the insulating film and clamps the battery cell, and the main surfaces on the two sides of the battery cell are perpendicular to the length direction of the insulating film. The first clamping assembly further drives the battery cell, and the end face of the battery cell is in contact with the insulating film. The clamping roller assembly comprises a first clamping roller and a second clamping roller which are positioned on the other side of the insulating film and are arranged side by side with each other, the first clamping assembly drives the battery cell and the insulating film to enter a spacing area between the first clamping roller and the second clamping roller, and the first clamping roller and the second clamping roller press and hold the insulating film on the main surfaces of the two sides of the battery cell so as to coat the main surfaces of the two sides of the battery cell, so that the film coating machine can realize automatic film coating on the battery cell; and the exposed length of the insulating film is short, and the insulating film is not easy to stick particles such as dust and the like, so that the coating quality of the electric core is further improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is a front view of a film coating machine of the present application;

FIG. 2 is a schematic view of the structure of A shown in FIG. 1;

fig. 3 is a schematic structural diagram of a battery cell in the film coating machine shown in fig. 1;

FIG. 4 is a schematic structural diagram of a drawing film assembly in the film coating machine shown in FIG. 1;

FIG. 5 is a schematic structural view of a second clamping assembly of the film coating machine shown in FIG. 1;

FIG. 6 is a schematic view of a first clamping assembly of the film coating machine shown in FIG. 1;

FIG. 7 is a side view of the first clamp assembly shown in FIG. 6;

fig. 8a-8e are schematic views of the working process of the film coating machine shown in fig. 1.

Reference numerals: 1. a drawstring assembly; 11. mounting a plate; 12. a film drawing roller; 13. connecting a bracket; 131. a film drawing roller bracket; 14. a second film drawing driving part; 15. a first limit piece; 16. a second limiting member; 171. a first film drawing slider; 172. a first film drawing slide rail; 18. a buffer; 2. A first clamping assembly; 21. an upper bracket; 22. a first upper driving member; 23. an upper connecting plate; 24. A splint; 25. a second upper drive member; 261. a first upper slider; 262. a first upper slide rail; 271. A second upper slide block; 272. a second upper slide rail; 3. a nip roller assembly; 31. a first nip roller; 32. A second nip roller; 33. a first nip roll holder; 34. a second nip roll support; 351. a second nip roller slider; 352. a second nip roller slide rail; 4. a second clamping assembly; 41. a first fixing plate; 42. pulling out the plate; 43. a second fixing plate; 44. a guide member; 45. a second lower driving member; 461. a lower clamping slide block; 462. a lower clamping slide rail; 463. a linear bearing; 5. a cutter assembly; 6. an unwinding assembly; 61. unwinding the reel; 7. a winding component; 71. a winding shaft; 8. a carrier plate; 9. a tension adjusting mechanism; 91. a roller; 92. a tension bracket; 100. material rolls; 101. an insulating film; 102. a diaphragm; 200. an electric core; 201. a major surface; 202. an end face.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present application, the following describes a film coating machine provided by the present invention in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1, 2 and 3, fig. 1 is a front view of a film coating machine of the present application; FIG. 2 is a schematic view of the structure of A shown in FIG. 1; fig. 3 is a schematic structural diagram of a battery cell in the film coating machine shown in fig. 1.

The film wrapping machine in this embodiment includes a drawing belt assembly 1, a first clamping assembly 2 and a clamping roller assembly 3, and in combination with fig. 8a mentioned later, the drawing belt assembly 1 is used for fixing the free end of the insulating film 101, and pulls the insulating film 101 along the length direction of the insulating film 101, and simultaneously pulls the insulating film forward in a preset direction, so that the subsequent clamping roller assembly 3 fixes the insulating film 101 on the battery cell 200. The first clamping assembly 2 is arranged on one side face of the insulating film 101, and the first clamping assembly 2 is used for clamping the battery cell 200 and can clamp the battery cell 200 from the feeding station and convey the battery cell 200 to the upper side of the film coating station. Meanwhile, the first clamping assembly 2 has both side main surfaces 201 of the battery cell 200 arranged perpendicular to the length direction of the insulating film 101, that is, the battery cell 200 is placed vertically.

Further, the first clamping assembly 2 drives the battery cell 200 to provide motive power and bring the end face 202 of the battery cell 200 into contact with the insulating film 101. In order to attach the insulating film 101 to the battery cell 200, the clamping roller assembly 3 includes a first clamping roller 31 and a second clamping roller 32, where the first clamping roller 31 and the second clamping roller 32 are both located on the other side of the insulating film 101 and are arranged side by side with each other, the first clamping assembly 2 drives the battery cell 200 and the insulating film 101 to enter a spacing region between the first clamping roller 31 and the second clamping roller 32, and the first clamping roller 31 and the second clamping roller 32 press the insulating film 101 on the two main surfaces 201 of the battery cell 200, so that the first clamping roller 31 and the second clamping roller 32 respectively move towards the battery cell 200 and attach to the surface of the battery cell 200, thereby attaching the insulating film 101 to the surface of the battery cell 200, and further realizing that the film wrapping machine realizes automatic film-thinning of the battery cell 200 and simultaneously reducing air bubbles.

When the battery cell 200 is vertically placed, a large space area is formed between the first clamping roller 31 and the second clamping roller 32, the space area can be used for the insulating film 101 to pass through, the exposed length of the insulating film 101 is short, and the insulating film 101 is not easy to stick particles such as dust, so that the coating quality of the battery cell 200 is further improved.

The battery cell 200 includes a main surface 201 and an end surface 202, wherein the main surface 201 is disposed on two sides of the battery cell 200 and is disposed opposite to the main surface 201, and the end surface 202 is connected between the two main surfaces 201. The battery cell 200 has a long side a, a wide side b and a high side c, wherein the length of the long side is greater than that of the wide side, and the length of the wide side is greater than that of the high side, and a, b and c are as shown in fig. 3. The main surfaces 201 on both sides of the battery cell 200 are defined by a long side and a wide side, which are the largest area of the battery cell 200, and the main surfaces 201 on both sides of the battery cell 200 are vertically perpendicular to the length direction of the insulating film 101. The main surface 201 of the battery cell 200 may be the long side of the battery cell 200 perpendicular to the length direction of the insulating film 101, or the wide side of the battery cell 200 perpendicular to the length direction of the insulating film 101, as long as the main surfaces 201 of the battery cell 200 are perpendicular to the length direction of the insulating film 101, which is not limited herein. The battery cell 200 is a square battery cell, etc. Wherein the insulating film 101 is fixed on the pulling tape assembly 1, wherein the fixing manner may be adhesion or clamping, etc., as long as the free end of the insulating film 101 can be fixed on the pulling tape assembly 1.

In one embodiment, the first nip roller 31 is located on one major surface 201 of the cell 200, and the draw tape assembly 1 and the second nip roller 32 are located on the other major surface 201 of the cell 200. After the coating of the battery cell 200 is completed, the insulating film 101 needs to be cut. Therefore, the film coating machine further comprises a cutter assembly 5, the cutter assembly 5 is positioned on the same side of the first nip roller 31, and the cutter assembly 5 is used for cutting the insulating film 101 after the insulating film 101 finishes coating the two main surfaces 201 of the battery cell 200.

The cut insulation film 101 is reformed to a free end overlapping the first nip roller 31, and since the film-drawing roller 12 needs to re-draw the insulation film 101 for the coating process of the next cell 200, the draw tape assembly 1 is configured to be movable toward the first nip roller 31 to pick up the free end of the reformed insulation film 101 and pull the insulation film 101 reversely for a preset length to satisfy the coating of the next cell 200. Where reversal is at the original position where the first nip roller 31 returns.

The cutter assembly 5 is slidably disposed on the carrier plate 8 to approach the insulating film 101 and cut the insulating film 101. Specifically, the cutter assembly 5 slides from one end of the insulating film 101 to the other end of the insulating film 101 in a direction perpendicular to the length direction of the insulating film 101 to cut the insulating film 101. Wherein, one of the bottom of the cutter component 5 and the bearing plate 8 is provided with a cutter slide block (not shown in the figure), the other one of the cutter component 5 and the bearing plate 8 is provided with a cutter slide rail (not shown in the figure), and the cutter slide block and the cutter slide rail are mutually matched to enable the cutter component 5 to slide on the bearing plate 8.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a stretch film assembly in the film coating machine shown in fig. 1.

In an embodiment, referring to fig. 1, the draw tape assembly 1 includes a draw film roller 12, and the draw film roller 12 is disposed to abut against the first nip roller 31, that is, the draw film roller 12 abuts against the first nip roller 31, so that the free end of the reformed insulation film 101 is attached and fixed to the draw film roller 12 to satisfy the envelope of the next electrical core 200.

In an embodiment, the draw tape assembly 1 further comprises a first draw film roller driving mechanism (not shown) for driving the draw film roller 12 to approach or depart from the first nip roller 31 along a first direction to realize the movement of the draw film roller 12 along the first direction, wherein the first direction is a spacing direction of the first nip roller 31 and the second nip roller 32.

The first film-drawing roller transmission mechanism includes a mounting plate 11 and a first film-drawing driving member (not shown), the mounting plate 11 is slidably disposed on the bearing plate 8 along a first direction to drive the film-drawing roller 12 to move along the first direction, wherein the first direction is also the same as the length direction of the insulating film 101, and the first direction is the direction indicated by the double-headed arrow X in fig. 1. The first film-drawing driving member drives the mounting plate 11 to slide on the bearing plate 8. The first film drawing driving part can be a first film drawing motor.

Further, in order to facilitate the mounting plate 11 to slide on the bearing plate 8, one of the mounting plate 11 and the bearing plate 8 is provided with a first film-drawing slider 171, the other of the mounting plate 11 and the bearing plate 8 is provided with a first film-drawing sliding rail 172, and the first film-drawing slider 171 and the first film-drawing sliding rail 172 are matched with each other, so that the mounting plate 11 slides on the bearing plate 8.

The draw tape assembly 1 further comprises a second draw film roller driving mechanism for driving the draw film roller 12 to approach or depart from the first nip roller 31 along a second direction, so as to realize the movement of the draw film roller 12 along the second direction, wherein the second direction is perpendicular to the first direction and the axial direction of the draw film roller 12, and the second direction is the direction indicated by the double-headed arrow Y shown in FIG. 1. The film drawing roller 12 can realize that the film drawing roller 12 moves in the first direction and the second direction together through the first film drawing roller transmission mechanism and the second film drawing roller transmission mechanism, so that the film drawing roller 12 can be close to or far away from the first clamping roller 31.

The second film drawing roller transmission mechanism comprises a connecting bracket 13 and a second film drawing driving part 14, and the connecting bracket 13 is arranged on the mounting plate 11 in a sliding mode along the second direction. The second film drawing driving part 14 is connected with the connecting bracket 13 to drive the connecting bracket 13 to slide on the mounting plate 11 along the second direction. The second film drawing driving member 14 may be a second film drawing motor.

Further, one of the connecting bracket 13 and the mounting plate 11 is provided with a second film-drawing slider (not shown in the figure), and the other of the connecting bracket 13 and the mounting plate 11 is provided with a second film-drawing slide rail (not shown in the figure), wherein the second film-drawing slider and the second film-drawing slide rail are matched with each other, so that the mounting plate 11 slides on the bearing plate 8.

In one embodiment, the second film drawing roller transmission mechanism drives the film drawing roller 12 to reciprocate between a first position and a second position which are arranged at intervals along the second direction, wherein when the film drawing roller 12 is at the first position, the film drawing roller 12 and the first clamping roller 31 are flush with each other along the second direction. When the film drawing roller 12 is at the second position, the film drawing roller 12 and the second nip roller 32 form an avoidance position along the second direction, that is, the second nip roller 32 avoids the film drawing roller 12, so that the film drawing roller 12 moves along the second direction and the first direction to the position of the first nip roller 31, and abuts against the first nip roller 31.

Specifically, the strap assembly 1 includes a first limiting member 15 and a second limiting member 16, the first limiting member 15 and the second limiting member 16 are both disposed on the mounting plate 11 and are disposed oppositely, the position of the second limiting member 16 is a first position, and the position of the first limiting member 15 is a second position. The first limiting piece 15 and the second limiting piece 16 are used for limiting the movement of the connecting bracket 13, so that the film drawing roller 12 reciprocates between the first limiting piece 15 and the second limiting piece 16 which are arranged at intervals in the second direction. Preferably, a buffer 18 is disposed on each of the first limiting member 15 and the second limiting member 16 to buffer the second end of the connecting bracket 13.

In an embodiment, in order to further embody the avoidance relationship between the film-drawing roller 12 and the second nip roller 32 in space, the film-drawing assembly 1 further includes two film-drawing roller brackets 131, and both the two film-drawing roller brackets 131 are fixed on the connecting bracket 13, wherein the two film-drawing roller brackets 131 are axially spaced along the film-drawing roller 12, so that the film-drawing roller is rotatably supported between the two film-drawing roller brackets. Wherein the draw roll 12 and the second nip roll 32 are arranged in parallel, and when the draw roll 12 is in the first position, the second nip roll 32 is located in the spaced area between the two draw roll holders 131 to avoid the second nip roll 32 from spatially interfering with the draw roll 12.

In one embodiment, referring back to fig. 1 and 2, the nip roller assembly 3 further includes a first nip roller transmission mechanism (not shown) connected to the first nip roller 31 and a second nip roller transmission mechanism (not shown) connected to the second nip roller 32, the first nip roller transmission mechanism transmitting the first nip roller 31 and the second nip roller transmission mechanism transmitting the second nip roller 32 to move toward and away from each other. When the first nip roller 31 and the second nip roller 32 are in a close state, the first nip roller 31 and the second nip roller 32 respectively abut against the two main surfaces 201 of the battery cell 200, so as to attach the insulating film 101 to the two main surfaces 201 of the battery cell 200. When the first nip roller 31 and the second nip roller 32 are in the spaced-apart state, the spacing distance between the first nip roller 31 and the second nip roller 32 is greater than the spacing distance between the both-side main surfaces 201 of the battery cell 200 to release the abutment with the both-side main surfaces 201 of the battery cell 200.

Specifically, the first nip roller transmission mechanism includes a first nip roller support 33 and a first nip driving member (not shown in the figure), and the first nip roller support 33 is connected to the first nip roller 31 and is slidably disposed on the bearing plate 8 along the first direction. The first nip roller driving member is used for driving the first nip roller bracket 33 to be slidably disposed on the bearing plate 8. Similarly, the second nip roller transmission mechanism includes a second nip roller support 34 and a second nip driving member (not shown in the figure), and the second nip roller support 34 is connected to the second nip roller 32 and is slidably disposed on the bearing plate 8 along the first direction. The first nip roller driving member is used for driving the second nip roller bracket 34 to be arranged on the bearing plate 8 in a sliding manner.

The center axes of the above-described first nip roller 31 and second nip roller 32 are parallel to the short side direction of the insulating film 101, that is, they are arranged in parallel to the third direction, which is the direction indicated by the double-headed arrow Z in the subsequent fig. 7.

Further, one of the first nip roller bracket 33 and the bearing plate 8 is provided with a first nip roller slide block (not shown in the figure), and the other one of the first nip roller bracket 33 and the bearing plate 8 is provided with a first nip roller slide rail (not shown in the figure), and the first nip roller bracket 33 is slidably connected to the bearing plate 8 through the mutual cooperation of the first nip roller slide block and the first nip roller slide rail, so that the first nip roller 31 can move.

Similarly, referring to fig. 1, one of the second nip roller support 34 and the carrier plate 8 is provided with a second nip roller slider 351, and one of the second nip roller support 34 and the carrier plate 8 is provided with a second nip roller slide rail 352, which are mutually matched with each other through the second nip roller slider 351 and the second nip roller slide rail 352, so as to realize the sliding connection of the second nip roller support 34 on the carrier plate 8, so that the second nip roller 32 can move.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a second clamping assembly in the film coating machine shown in fig. 1.

In practical process, although the first clamping assembly 2 further drives the battery cell 200, so that the first clamping roller 31 and the second clamping roller 32 press the insulating film 101 to the two main surfaces 201 of the battery cell 200, the position of the battery cell 200 close to the first clamping assembly 2 may affect the incomplete coating of the battery cell 200 due to the clamping effect of the first clamping assembly 2; meanwhile, the coated battery cell 200 directly falls to a station or a collection device to damage the battery cell. Therefore, the film wrapping machine in this embodiment further includes the second clamping assembly 4, so as to solve the above technical problem through the second clamping assembly 4.

Specifically, the film coating machine further includes a second clamping assembly 4, the second clamping assembly 4 is disposed on the other side of the insulating film 101, the second clamping assembly 4 is configured to clamp the bottom of the battery cell 200 when the insulating film 101 partially coats the two main surfaces 201 of the battery cell 200, and then the first clamping assembly 2 releases the battery cell 200. The second clamping assembly 4 further drives the battery cell 200, so that the insulating film 101 covers the two main surfaces 201 of the battery cell 200, the battery cell 200 is automatically and completely covered with the insulating film 101, and damage to the battery cell 200 is reduced.

Further, the second clamping assembly 4 clamps the two main surfaces 201, which are already covered by the insulating film 101, from the two sides of the battery cell 200, so that the first clamping roller 31 and the second clamping roller 32 not only continuously press and hold the two main surfaces 201 of the battery cell 200 to move towards the upper part of the battery cell 200, so that the insulating film 101 is attached to the two main surfaces 201 of the battery cell 200, but also can bear the battery cell 200, and the battery cell 200 is prevented from being damaged. After the battery cell 200 is coated, the battery cell 200 can be directly transferred to the next station by means of a manipulator and the like.

Further, the second clamping assembly 4 comprises a first fixing plate 41 and two sets of pulling-out plates 42, the first fixing plate 41 is erected on the workbench, and the two sets of pulling-out plates 42 are slidably disposed on the first fixing plate 41. In order to power the sliding of the two sets of pulling-out plates 42, the second clamping assembly 4 includes a first lower driving member (not shown), and the first lower driving member drives the two sets of pulling-out plates 42 to move toward or away from each other to clamp or release the battery cell 200. The first lower driving member may be a first lower driving motor or a gas claw.

Specifically, one of the pull-out plate 42 and the first fixing plate 41 is provided with a lower clamping slider 461, the other of the pull-out plate 42 and the first fixing plate 41 is provided with a lower clamping slide 462, and the lower clamping slider 461 and the lower clamping slide 462 are mutually matched to realize the sliding of the pull-out plate 42 on the first fixing plate 41.

In order to carry the battery cell 200 in the first clamping assembly 2, the second clamping assembly 4 needs to be lifted and lowered. Therefore, the second clamping assembly 4 in this embodiment further includes a second fixing plate 43 and a second lower driving member 45, the second lower driving member 45 is connected to the second fixing plate 43, and the second lower driving member 45 drives the second fixing plate 43 to move up and down.

In order to improve the stability of the lifting motion of the second fixing plate 43, the second clamping assembly 4 includes at least one guiding element 44, the guiding element 44 penetrates through the second fixing plate 43, one end of the guiding element 44 is connected with the first fixing plate 41, and the other end of the guiding element is connected with the workbench. That is, the second lower driving member 45 is connected to the first fixing plate 41 to drive the first fixing plate 41 to move up and down by the at least one guide 44. The guide 44 may be slidably disposed on the second fixing plate 43 by a linear bearing 463.

Referring to fig. 6, fig. 6 is a schematic structural view of a first clamping assembly in the film coating machine shown in fig. 1;

fig. 7 is a side view of the first clamp assembly shown in fig. 6.

In one embodiment, referring to fig. 1, the first clamping assembly 2 is disposed on the carrier plate 8. The first clamping assembly 2 includes an upper bracket 21, a first upper driving member 22, an upper connecting plate 23 and two sets of clamping plates 24, and the upper bracket 21 is disposed on the bearing plate 8 to provide a supporting force for the upper connecting plate 23 and the upper bracket 21. The first upper driving member 22 slides on the upper bracket 21 in the third direction. The upper connecting plate 23 is connected to a driving shaft of the first upper driving member 22, and when the driving shaft of the first upper driving member 22 moves, the upper connecting plate 23 can be driven to move closer to or away from the insulating film 101 in the second direction.

Two sets of clamping plates 24 are slidably arranged on the upper connecting plate 23. For providing power for sliding the two sets of clamping plates 24, the first clamping assembly 2 further includes a second upper driving member 25, wherein the second upper driving member 25 drives the two sets of clamping plates 24 to slide on the upper connecting plate 23, so that the two sets of clamping plates 24 move toward or away from each other in a third direction to clamp or unclamp the battery cell 200. The third direction is perpendicular to the first direction and the second direction, respectively.

Specifically, one of the upper bracket 21 and the upper connecting plate 23 is provided with a first upper sliding block 261, and the other of the upper bracket 21 and the upper connecting plate 23 is provided with a first upper sliding rail 262, so that the upper connecting plate 23 slides on the upper bracket 21 through the mutual matching of the first upper sliding block 261 and the first upper sliding rail 262.

One of the upper connecting plate 23 and the clamping plate 24 is provided with a second upper sliding block 271, the other one of the upper connecting plate 23 and the clamping plate 24 is provided with a second upper sliding rail 272, and the second upper sliding block 271 and the second upper sliding rail 272 are mutually matched to realize that the two groups of clamping plates 24 slide on the upper bracket 21.

In order to slide the first upper driving member 22 on the upper bracket 21, the first clamping assembly 2 further includes a third upper driving member (not shown in the figure) connected to the first upper driving member 22 for driving the first upper driving member 22 to slide on the upper bracket 21 along the third direction. The first upper drive member 22 and the third upper drive member may be a first upper electric drive cylinder, a third upper electric drive cylinder, etc. The second upper driving member 25 may be a second upper driving electric cylinder or a second upper pneumatic jaw, etc.

Referring back to fig. 1 and 2, since the roll 100 includes the insulating film 101 and the diaphragm 102, the diaphragm 102 is attached to one main surface or both main surfaces of the insulating film 101. In order to realize automation of unwinding of the insulating film 101 and winding of the diaphragm 102, the film wrapping machine in the embodiment includes an unwinding assembly 6 and a winding assembly 7, the unwinding assembly 6 winds the material roll 100 for unwinding, and the winding assembly 7 is used for winding the diaphragm 102 and tearing the diaphragm from the insulating film 101.

Specifically, the unwinding assembly 6 includes an unwinding shaft 61, and the unwinding shaft 61 is driven by an unwinding driving member to rotate, so as to unwind the material roll 100. The winding assembly 7 comprises a winding shaft 71, and the winding shaft 71 is driven by a winding driving member to rotate so as to wind the membrane 102, and further wind the membrane 102 peeled from the material roll 100. The starting end of the diaphragm 102 is manually placed on the take-up spool 71 and then automatically taken up. The unreeling driving piece can be an unreeling motor and the like, and the reeling driving piece can be a reeling motor and the like.

Continuing back to fig. 1 and 2, the film coating machine further includes a tension adjusting mechanism 9 for adjusting the tension of the insulating film 101 and the diaphragm 102. The tension adjusting mechanism 9 includes at least one roller 91, the number of the rollers 91 may be one, two or more, and the plurality of rollers 91 are mounted on the bearing plate 8 through the tension bracket 92. In order to realize the rolling of the roller 91, the tension adjusting mechanism 9 further includes a tension driving member connected to the roller 91, so that the roller 91 can rotate under the driving of the tension driving member, and the roller 91 rotates to realize the tensioning of the insulating film 101 and the diaphragm 102. The tension driving member may be a tension cylinder or the like.

Referring to fig. 8a-8e, fig. 8a-8e are schematic views of the working process of the film coating machine shown in fig. 1.

With reference to fig. 1-7, the working flow of the film coating machine is as follows: (1) as shown in fig. 8a, after the first clamping assembly 2 goes to the feeding station to clamp the battery cell 200, the battery cell 200 is moved to the upper side of the coating station, and the battery cell 200 is driven to move downwards to be in contact with the insulating film 101 located below the battery cell, and the insulating film 101 moves to the right under the adhesion of the film drawing roller 12 and passes between the two first clamping rollers 31 and the second clamping roller 32.

(2) The battery cell 200 continues to move downwards, and as shown in fig. 8b, the first nip roller 31 and the second nip roller 32 respectively move towards the battery cell 200 and adhere to the surface of the battery cell 200, so that the insulating film 101 adheres to the surface of the battery cell 200, and air bubbles are prevented from occurring.

(3) The battery cell 200 is driven by the first clamping assembly 2 to move downwards continuously, and as shown in fig. 8c, the second clamping assembly 4 clamps the bottom of the battery cell 200 with the insulating film 101 adhered thereon, and the first clamping assembly 2 is released. As shown in fig. 8e, under the driving of the second clamping assembly 4, the battery cell 200 continues to move downwards until the two main surfaces 201 of the battery cell 200 are entirely coated with the insulating film 101, and under the pulling of the battery cell 200, the insulating film 101 adhered to the film-pulling roller 12 is separated therefrom, and the film-pulling roller 12 moves towards the first clamping roller 31 and the second clamping roller 32 until the insulating film is adhered to the end of the next insulating film 101, at which time the cutter assembly 5 cuts off the insulating film 101.

This embodiment coating machine includes stretching strap subassembly, first centre gripping subassembly and double-layered roller assembly, and the stretching strap subassembly is fixed and is drawn the free end of holding the insulating film. The first clamping assembly is arranged on one side of the insulating film and clamps the battery cell, and the main surfaces on the two sides of the battery cell are perpendicular to the length direction of the insulating film. The first clamping assembly further drives the battery cell, and the end face of the battery cell is in contact with the insulating film. The clamping roller assembly comprises a first clamping roller and a second clamping roller which are positioned on the other side of the insulating film and are arranged side by side with each other, the first clamping assembly drives the battery cell and the insulating film to enter a spacing area between the first clamping roller and the second clamping roller, and the first clamping roller and the second clamping roller press and hold the insulating film on the main surfaces of the two sides of the battery cell so as to coat the main surfaces of the two sides of the battery cell, so that the film coating machine can realize automatic film coating on the battery cell; and the exposed length of the insulating film is short, and the insulating film is not easy to stick particles such as dust and the like, so that the coating quality of the electric core is further improved.

The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. A film wrapping machine, characterized by comprising:

a pull tape assembly fixing and pulling a free end of the insulating film;

the first clamping assembly is arranged on one side of the insulating film and clamps a battery cell, the main surfaces of the two sides of the battery cell are perpendicular to the length direction of the insulating film, the battery cell is further driven by the first clamping assembly, and the end face of the battery cell is in contact with the insulating film;

the clamping roller assembly comprises a first clamping roller and a second clamping roller which are positioned on the other side of the insulating film and are arranged side by side, the first clamping assembly drives the battery cell and the insulating film to enter a spacing area between the first clamping roller and the second clamping roller, and the first clamping roller and the second clamping roller press the insulating film on the two main surfaces of the battery cell so as to coat the two main surfaces of the battery cell.

2. The film wrapping machine of claim 1, wherein the first nip roller is located at one side of the battery cell, the drawstring assembly and the second nip roller are located at the other side of the battery cell, and the first nip roller and the second nip roller wrap the two main surfaces of the battery cell through the insulation film respectively.

3. The film wrapping machine of claim 2 further comprising a cutter assembly located on the same side of the first nip roller to sever the insulation film to reform a free end overlapping the first nip roller, the draw tape assembly being configured to move toward the first nip roller to pick up the reformed free end and pull the insulation film in a reverse direction.

4. The film wrapping machine according to claim 3, wherein the cutter assembly is vertically slidably disposed along a length direction of the insulation film to cut the insulation film.

5. The film wrapping machine of claim 2 wherein the draw tape assembly further comprises:

the first film drawing roller transmission mechanism is used for transmitting a film drawing roller of the draw belt assembly to be close to or far away from the first clamping roller along a first direction, wherein the first direction is the spacing direction of the first clamping roller and the second clamping roller;

and the second film drawing roller transmission mechanism is used for transmitting the film drawing roller of the drawing belt assembly to be close to or far away from the first clamping roller along a second direction, and the second direction is perpendicular to the first direction and the axial direction of the film drawing roller.

6. The film coating machine according to claim 5, wherein the second film drawing roller transmission mechanism drives the film drawing roller to reciprocate between a first position and a second position which are arranged at intervals along the second direction, wherein when the film drawing roller is at the first position, the film drawing roller and the first clamping roller are flush with each other along the second direction, and when the film drawing roller is at the second position, the film drawing roller and the second clamping roller form a clearance along the second direction.

7. The coating machine of any one of claims 1 to 5, further comprising a second clamping assembly, disposed on the other side of the insulating film, for clamping the battery cell when the insulating film partially coats the two major surfaces of the battery cell; the first clamping assembly releases the battery cell, and the second clamping assembly further drives the battery cell so that the insulating film covers the two main surfaces of the battery cell.

8. The film wrapping machine of claim 7, wherein the second clamping assembly comprises:

the first fixing plate is erected on the workbench;

the two groups of pull-out plates are arranged on the first fixing plate in a sliding manner;

and the first lower driving piece drives the two groups of pulling-out plates to approach or separate from each other so as to clamp or loosen the battery cell.

9. The film wrapping machine of claim 8, wherein the second clamping assembly comprises:

a second fixing plate;

at least one guide piece penetrates through the second fixing plate, one end of the guide piece is connected with the first fixing plate, and the other end of the guide piece is connected with the workbench;

and the second lower driving part is connected with the first fixing plate so as to drive the first fixing plate to move up and down through the at least one guide part.

10. The film wrapping machine according to any one of claims 1-5, further comprising an unwinding component and a winding component, wherein the unwinding component is used for unwinding a material roll, the material roll is formed by winding the insulating film and the membrane attached to at least one main surface of the insulating film, and the winding component is used for winding the membrane so as to tear the membrane from the insulating film.