A feeding mechanism for the upper and lower parts of a film-pulling assisted hot pressing platform

Abstract

The present invention discloses a feeding and discharging mechanism for a film-pulling assisted hot-pressing platform, which includes a frame, a first buffer structure and a second buffer structure arranged on the front and rear sides of the frame, a first translation guide rail and a second translation guide rail arranged on the left and right sides of the frame, a first rocker structure and a second rocker structure that are movably arranged back and forth on the first translation guide rail and the second translation guide rail, and a hot-pressing platform arranged between the first translation guide rail and the second translation guide rail. By utilizing the flexibility and heat conductivity of the flexible heat-conducting film and cooperating with the rocker structure, the present invention realizes lifting and lowering of the battery cell, completes the process of feeding and discharging the battery cell on the hot-pressing platform, can ensure the integrity of the hot-pressing platform, make the heat generation uniform, reduce the processing requirements of the heating platform, and at the same time will not cause defects in the battery cell during the hot pressing of the battery cell, which is of great significance for improving the quality of the battery cell.

Description

Technical Field

[0001] The present invention relates to the technical field of cell hot pressing, and particularly to a loading and unloading mechanism for a film-pulling assisted hot pressing platform for cells. Background Art

[0002] In the Internet information era, with the expansion of markets such as electronic products and new energy vehicles, higher requirements are imposed on the safety and use of batteries, which makes the production process of lithium batteries more meticulous and strict.

[0003] In the process of the cell forming process, the hot pressing process is essential. Due to the special structure of the cell, it is impossible to perform push-pull and adsorption loading operations on the four sides of the cell, and only the upper and lower surfaces of the cell can be clamped for cell handling, including the loading and unloading processes of the cell on the hot pressing platform. The traditional cell loading method divides the hot pressing platform into three parts, and the middle part has a lifting function to form a loading and unloading picking platform. However, this structure results in very poor thermal uniformity of the hot pressing platform, extremely high processing requirements for the platform, and at the same time, it is impossible to eliminate the gap marks left on the cell surface after hot pressing. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a loading and unloading mechanism for a film-pulling assisted hot pressing platform for cells.

[0005] The technical solution of the present invention is as follows:

[0006] A loading and unloading mechanism for a film-pulling assisted hot pressing platform for cells includes a frame, a first buffer structure and a second buffer structure arranged on the front and rear sides of the frame, a first translation guide rail and a second translation guide rail arranged on the left and right sides of the frame, a first rocker structure and a second rocker structure movably arranged on the first translation guide rail and the second translation guide rail, and a hot pressing platform arranged between the first translation guide rail and the second translation guide rail.

[0007] Further, the first rocker structure includes a first roller group, a first rocker, a second rocker, a first rocker sliding block, a second rocker sliding block, a first rocker connecting block, a second rocker connecting block, a first rocker fixing block and a second rocker fixing block. The first rocker fixing block and the second rocker fixing block are rotatably arranged relative to each other on the left and right sides of the frame. One end of the first roller group is connected to the first rocker fixing block through the first rocker. The first rocker sliding block is slidably connected to the first translation guide rail. A first rocker connecting block is rotatably arranged on the first rocker sliding block. The first rocker connecting block is slidably matched with the first rocker. The other end of the first roller group is connected to the second rocker fixing block through the second rocker. The second rocker sliding block is slidably connected to the second translation guide rail. A second rocker connecting block is rotatably arranged on the second rocker sliding block. The second rocker connecting block is slidably matched with the second rocker.

[0008] Further, the first pulling roller group includes a first film pulling roller and a first auxiliary roller, and the first auxiliary roller is arranged in front of and behind the first film pulling roller.

[0009] Further, the second rocker structure includes a second pulling roller group, a third rocker, a fourth rocker, a third rocker slider, a fourth rocker slider, a third rocker connecting block, a fourth rocker connecting block, a third rocker fixing block and a fourth rocker fixing block. The third rocker fixing block and the fourth rocker fixing block are rotatably arranged on the left and right sides of the frame relatively. One end of the second pulling roller group is connected to the third rocker fixing block through the third rocker. The third rocker slider is slidably connected to the first translation guide rail. A third rocker connecting block is rotatably arranged on the third rocker slider, and the third rocker connecting block is slidably matched with the third rocker. The other end of the second pulling roller group is connected to the fourth rocker fixing block through the fourth rocker. The fourth rocker slider is slidably connected to the second translation guide rail. A fourth rocker connecting block is rotatably arranged on the fourth rocker slider, and the fourth rocker connecting block is slidably matched with the fourth rocker.

[0010] Further, the second pulling roller group includes a second film pulling roller and a second auxiliary roller, and the second film pulling roller is arranged in front of and behind the second auxiliary roller.

[0011] Further, the first buffer structure includes a first lifting guide rail, a second lifting guide rail, a first buffer block, a first idler roller and a second idler roller. The first lifting guide rail and the second lifting guide rail are arranged on the left and right sides of the frame relatively. The first idler roller and the second idler roller are arranged up and down at the rear side of the first lifting guide rail and the second lifting guide rail. The first buffer block is movably arranged on the first lifting guide rail and the second lifting guide rail.

[0012] Further, the second buffer structure includes a third lifting guide rail, a fourth lifting guide rail, a second buffer block, a third idler roller and a fourth idler roller. The third lifting guide rail and the fourth lifting guide rail are arranged on the left and right sides of the frame relatively. The third idler roller and the fourth idler roller are arranged up and down at the rear side of the third lifting guide rail and the fourth lifting guide rail. The second buffer block is movably arranged on the third lifting guide rail and the fourth lifting guide rail.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: The film pulling assisted hot press platform loading and unloading mechanism provided by the present invention utilizes the flexibility and heat conductivity of the flexible heat conducting film, and cooperates with the rocker structure to lift and lower the battery cell, completing the process of loading and unloading the battery cell on the hot press platform. The film pulling assisted hot press platform loading and unloading mechanism can ensure the integrity of the hot press platform, make the heat distribution uniform, reduce the processing requirements of the heating platform, and at the same time, the hot pressing of the battery cell will not cause defects in the battery cell, which is of great significance for improving the quality of the battery cell. The flexible heat conducting film can be selected in various ways according to needs, reducing the consumption cost. Description of the Drawings

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for use in the embodiments or the description of the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0015] Figure 1 It is a schematic structural diagram of a feeding and discharging mechanism for a film-pulling assisted hot-pressing platform provided by the present invention;

[0016] Figure 2 It is a schematic structural principle diagram of a feeding and discharging mechanism for a film-pulling assisted hot-pressing platform provided by the present invention;

[0017] Figure 3 It is a schematic diagram of cell feeding and discharging of a feeding and discharging mechanism for a film-pulling assisted hot-pressing platform provided by the present invention;

[0018] Figure 4 It is a schematic diagram of cell hot pressing of a feeding and discharging mechanism for a film-pulling assisted hot-pressing platform provided by the present invention. Specific Embodiments

[0019] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following further details the present invention in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] In order to illustrate the technical solutions described in the present invention, the following will be described through specific embodiments. Embodiment

[0021] Please refer to Figure 1 , this embodiment provides a feeding and discharging mechanism for a film-pulling assisted hot-pressing platform, including a frame 1, a first buffer structure 2 and a second buffer structure 3 arranged on the front and rear sides of the frame 1, a first translation guide rail 4 and a second translation guide rail arranged on the left and right sides of the frame 1, a first rocker structure 5 and a second rocker structure 6 movably arranged on the first translation guide rail 4 and the second translation guide rail in the front and rear directions, and a hot-pressing platform 7 arranged between the first translation guide rail 4 and the second translation guide rail.

[0022] The first buffer structure 2 includes a first lifting guide rail 21, a second lifting guide rail 22, a first buffer block 23, a first over-roller 24 and a second over-roller 25. The first lifting guide rail 21 and the second lifting guide rail 22 are relatively arranged on the left and right sides of the frame 1. The first over-roller 24 and the second over-roller 25 are arranged up and down at the rear side of the first lifting guide rail 21 and the second lifting guide rail 22. The first buffer block 23 is movably arranged on the first lifting guide rail 21 and the second lifting guide rail 22.

[0023] The second buffer structure 3 includes a third lifting guide rail 31, a fourth lifting guide rail 32, a second buffer block 33, a third over-roller 34 and a fourth over-roller 35. The third lifting guide rail 31 and the fourth lifting guide rail 32 are oppositely arranged on the left and right sides of the frame 1. The third over-roller 34 and the fourth over-roller 35 are arranged up and down at the rear sides of the third lifting guide rail 31 and the fourth lifting guide rail 32. The second buffer block 33 is movably arranged on the third lifting guide rail 31 and the fourth lifting guide rail 32.

[0024] The first rocker structure 5 includes a first roller group, a first rocker 53, a second rocker, a first rocker slider 54, a second rocker slider, a first rocker connecting block 55, a second rocker connecting block, a first rocker fixing block 56 and a second rocker fixing block. The first rocker fixing block 56 and the second rocker fixing block are rotatably arranged oppositely on the left and right sides of the frame 1. The first roller group includes a first film pulling roller 51 and a first auxiliary roller 52. The first auxiliary roller 52 and the first film pulling roller 51 are arranged front and back. One end of the first roller group is connected to the first rocker fixing block 56 through the first rocker 53. The first rocker slider 54 is slidably connected to the first translation guide rail 4. A first rocker connecting block 55 is rotatably arranged on the first rocker slider 54. The first rocker connecting block 55 is slidably matched with the first rocker 53. The other end of the first roller group is connected to the second rocker fixing block through the second rocker. The second rocker slider is slidably connected to the second translation guide rail. A second rocker connecting block is rotatably arranged on the second rocker slider. The second rocker connecting block is slidably matched with the second rocker. Structural principle: The first film pulling roller 51 is rigidly connected to the first auxiliary roller 52 and is connected to the first rocker 53 and the second rocker at a certain angle. One end of the first rocker 53 is fixed on the first rocker fixing block 56, and one end of the second rocker is fixed on the second rocker fixing block. The first rocker 53 can rotate around the first rocker fixing block 56. The middle of the first rocker 53 is connected to the first rocker slider 54 through the first rocker connecting block 55. The first rocker connecting block 55 can slide on the first rocker 53 and can also horizontally slide on the first translation guide rail 4 through the first rocker slider 54 and can rotate at the same time. The second rocker can rotate around the second rocker fixing block. The middle of the second rocker is connected to the second rocker slider through the second rocker connecting block. The second rocker connecting block can slide on the second rocker and can also horizontally slide on the second translation guide rail through the second rocker slider and can rotate at the same time.

[0025] The second rocker structure 6 includes a second roller group, a third rocker 63, a fourth rocker, a third rocker slider 64, a fourth rocker slider, a third rocker connecting block 65, a fourth rocker connecting block, a third rocker fixing block 66 and a fourth rocker fixing block. The third rocker fixing block 66 and the fourth rocker fixing block are rotatably arranged on the left and right sides of the frame 1. The second roller group includes a second film pulling roller 61 and a second auxiliary roller 62. The second film pulling roller 61 and the second auxiliary roller 62 are arranged front and back. One end of the second roller group is connected to the third rocker fixing block 66 through the third rocker 63. The third rocker slider 64 is slidably connected to the first translation guide rail 4. A third rocker connecting block 65 is rotatably arranged on the third rocker slider 64. The third rocker connecting block 65 is slidably matched with the third rocker 63. The other end of the second roller group is connected to the fourth rocker fixing block through the fourth rocker. The fourth rocker slider is slidably connected to the second translation guide rail. A fourth rocker connecting block is rotatably arranged on the fourth rocker slider. The fourth rocker connecting block is slidably matched with the fourth rocker. Structural principle: The second film pulling roller 61 is rigidly connected to the second auxiliary roller 62 and is connected to the third rocker 63 and the fourth rocker at a certain angle. One end of the third rocker 63 is fixed on the third rocker fixing block 66, and one end of the fourth rocker is fixed on the fourth rocker fixing block. The third rocker 63 can rotate around the third rocker fixing block 66. The middle of the third rocker 63 is connected to the third rocker slider 64 through the third rocker connecting block 65. The third rocker connecting block 65 can slide on the third rocker 63 and can also horizontally slide on the first translation guide rail 4 through the third rocker slider 64 and can rotate at the same time. The fourth rocker can rotate around the fourth rocker fixing block. The middle of the fourth rocker is connected to the fourth rocker slider through the fourth rocker connecting block. The fourth rocker connecting block can slide on the fourth rocker and can also horizontally slide on the second translation guide rail through the fourth rocker slider and can rotate at the same time.

[0026] Its working principle is as Figure 2 shown. Both ends of the flexible heat-conducting film 10 pass through the upper surfaces of the first film pulling roller 51 and the second film pulling roller 61 respectively, then wind around the lower surfaces of the first auxiliary roller 52 and the second auxiliary roller 62, and then pass through the fixed first idler roller 24 and second idler roller 25, third idler roller 34 and fourth idler roller 35 respectively, and finally the ends are fixed on the first buffer block 23 and the second buffer block 33 respectively. The first buffer block 23 can slide up and down on the first lifting guide rail 21 and the second lifting guide rail 22. The second buffer block 33 can slide up and down on the third lifting guide rail 31 and the fourth lifting guide rail 32. During normal operation, a buffered elastic force (which can be provided by components such as springs or cylinders, but is not limited to them) acts on the first buffer block 23 and the second buffer block 33, so that the first buffer block 23 and the second buffer block 33 are always in a trend of upward movement, making the flexible heat-conducting film 10 in a taut state.

[0027] Combined with Figure 3 As shown, when the battery cell is loaded, a relative force is applied between the first rocker structure 5 and the second rocker structure 6, causing the first rocker structure 5 and the second rocker structure 6 to move towards the middle simultaneously. As the first rocker structure 5 and the second rocker structure 6 swing towards the middle, the flexible heat-conducting film 10 is in a taut state to form a material-receiving platform. The battery cell 9 is placed on the material-receiving platform by the loading gripper 8, or when the battery cell is unloaded, the battery cell 9 is lifted from the hot-pressing platform 7 through the material-receiving platform.

[0028] Combined with Figure 4 As shown, when the battery cell 9 is hot-pressed, forces in opposite directions are applied to the first rocker structure 5 and the second rocker structure 6, causing the first rocker structure 5 and the second rocker structure 6 to move outwards simultaneously. As the first rocker structure 5 and the second rocker structure 6 swing outwards, the flexible heat-conducting film 10 is in a taut state and spreads flat on the hot-pressing platform 7 to complete the hot-pressing operation.

[0029] This film-pulling assisted hot-pressing platform loading and unloading mechanism utilizes the flexibility and heat conductivity of the flexible heat-conducting film, in cooperation with the rocker structure, to lift and lower the battery cell, completing the process of loading and unloading the battery cell on the hot-pressing platform. It can ensure the integrity of the hot-pressing platform, make the heat distribution uniform, reduce the processing requirements of the heating platform, and at the same time, the hot-pressing of the battery cell will not cause defects in the battery cell.

[0030] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A feeding and discharging mechanism for a film-pulling assisted hot pressing platform, characterized in that: it includes a frame, a first buffer structure and a second buffer structure arranged on the front and rear sides of the frame, a first translation guide rail and a second translation guide rail arranged on the left and right sides of the frame, a first rocker structure and a second rocker structure movably arranged on the first translation guide rail and the second translation guide rail in the front and rear directions, and a hot pressing platform arranged between the first translation guide rail and the second translation guide rail; Both ends of the flexible heat-conducting film pass through the first rocker structure and the second rocker structure respectively and wind around the first buffer structure and the second buffer structure, so that the flexible heat-conducting film is in a taut state; When loading the battery cell, a relative force is applied between the first rocker structure and the second rocker structure, so that the first rocker structure and the second rocker structure move towards the middle at the same time. As the first rocker structure and the second rocker structure swing towards the middle, the flexible heat-conducting film is in a taut state to form a material receiving platform. The battery cell is placed on this material receiving platform by the loading gripper, or when unloading the battery cell, the battery cell is lifted from the hot pressing platform through the material receiving platform; When hot pressing the battery cell, forces in opposite directions are applied to the first rocker structure and the second rocker structure, so that the first rocker structure and the second rocker structure move outwards at the same time. As the first rocker structure and the second rocker structure swing outwards, the flexible heat-conducting film is in a taut state and spreads flat on the hot pressing platform to complete the hot pressing operation.

2. A feeding and discharging mechanism for a film-pulling assisted hot pressing platform according to claim 1, characterized in that: The first rocker structure includes a first roller group, a first rocker, a second rocker, a first rocker sliding block, a second rocker sliding block, a first rocker connecting block, a second rocker connecting block, a first rocker fixing block and a second rocker fixing block. The first rocker fixing block and the second rocker fixing block are rotatably arranged relatively on the left and right sides of the frame. One end of the first roller group is connected to the first rocker fixing block through the first rocker. The first rocker sliding block is slidably connected to the first translation guide rail. A first rocker connecting block is rotatably arranged on the first rocker sliding block. The first rocker connecting block is slidably matched with the first rocker. The other end of the first roller group is connected to the second rocker fixing block through the second rocker. The second rocker sliding block is slidably connected to the second translation guide rail. A second rocker connecting block is rotatably arranged on the second rocker sliding block. The second rocker connecting block is slidably matched with the second rocker.

3. A feeding and discharging mechanism for a film-pulling assisted hot pressing platform according to claim 2, characterized in that: The first roller group includes a first film-pulling roller and a first auxiliary roller, and the first auxiliary roller and the first film-pulling roller are arranged in the front and rear directions.

4. A feeding and discharging mechanism for a film-pulling assisted hot pressing platform according to claim 1, characterized in that: The second rocker structure includes a second roller group, a third rocker, a fourth rocker, a third rocker slider, a fourth rocker slider, a third rocker connecting block, a fourth rocker connecting block, a third rocker fixing block and a fourth rocker fixing block. The third rocker fixing block and the fourth rocker fixing block are rotatably arranged on the left and right sides of the frame relatively. One end of the second roller group is connected to the third rocker fixing block through the third rocker. The third rocker slider is slidably connected to the first translation guide rail. A third rocker connecting block is rotatably arranged on the third rocker slider. The third rocker connecting block is slidably matched with the third rocker. The other end of the second roller group is connected to the fourth rocker fixing block through the fourth rocker. The fourth rocker slider is slidably connected to the second translation guide rail. A fourth rocker connecting block is rotatably arranged on the fourth rocker slider. The fourth rocker connecting block is slidably matched with the fourth rocker.

5. The feeding and discharging mechanism for the film-pulling assisted hot pressing platform according to claim 4, characterized in that: The second roller group includes a second film-pulling roller and a second auxiliary roller. The second film-pulling roller and the second auxiliary roller are arranged front and back.

6. The feeding and discharging mechanism for the film-pulling assisted hot pressing platform according to claim 1, characterized in that: The first buffer structure includes a first lifting guide rail, a second lifting guide rail, a first buffer block, a first over-roller and a second over-roller. The first lifting guide rail and the second lifting guide rail are arranged relatively on the left and right sides of the frame. The first over-roller and the second over-roller are arranged up and down at the rear side of the first lifting guide rail and the second lifting guide rail. The first buffer block is movably arranged on the first lifting guide rail and the second lifting guide rail.

7. The feeding and discharging mechanism for the film-pulling assisted hot pressing platform according to claim 1, characterized in that: The second buffer structure includes a third lifting guide rail, a fourth lifting guide rail, a second buffer block, a third over-roller and a fourth over-roller. The third lifting guide rail and the fourth lifting guide rail are arranged relatively on the left and right sides of the frame. The third over-roller and the fourth over-roller are arranged up and down at the rear side of the third lifting guide rail and the fourth lifting guide rail. The second buffer block is movably arranged on the third lifting guide rail and the fourth lifting guide rail.

Images