Multi-station linear double-sealing edge trimmer

Abstract

A portal frame, a material moving module, a vacuum packaging module and a cutting module are arranged on a machine frame, a first sliding way and a second sliding way are arranged on the two side walls of a cross beam of the portal frame respectively, a third sliding way is arranged between two stand columns of the portal frame, and the vacuum packaging module and the cutting module are arranged at the two ends of the third sliding way respectively. The material moving module comprises a feeding mechanism, a material moving mechanism and a discharging mechanism, the vacuum packaging module comprises an upper pressing mechanism and a lower packaging mechanism, and the cutting module comprises a cutting mechanism. According to the utility model, the cutting module is arranged beside the vacuum sealing module, and the cutting module and the vacuum sealing module are connected through the material moving mechanism, so that an air bag stained with electrolyte and leftover materials on the battery cell can be directly cut off under the condition that the battery cell is not moved after packaging is completed, and the battery cell is carried to the next process through the blanking mechanism; and the problem of secondary cross contamination caused by the fact that redundant residual liquid in the electric bag after vacuum packaging is scattered on the surfaces of other battery cells in the battery cell carrying process is avoided.

Description

Technical Field

[0001] This utility model relates to the field of soft-pack battery packaging technology, and in particular to a multi-station linear double-sealing and edge-cutting machine. Background Technology

[0002] Most pouch cells are produced using a vacuum puncture sealing process. This involves first puncturing the inner gas bag containing electrolyte by drawing a vacuum from the outer bag, then sealing the outer bag. The exposed gas bag is then cut off. In actual production, this process is relatively time-consuming, typically involving multiple stations simultaneously performing vacuum sealing before transferring the cells to the cutting station. However, electrolyte residue inevitably remains on the outer gas bag during the vacuum puncture process, leading to equipment contamination or contamination of other pouch cells during material transfer. While this contamination can be addressed through regular equipment maintenance and subsequent production processes, it is time-consuming, labor-intensive, and increases production costs. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides a multi-station linear double-sealing and edge-cutting machine, which can directly cut off the gas bag and edge waste with electrolyte on it after packaging without moving the battery cell. The battery cell is then transported to the next process by the unloading mechanism, avoiding the problem of secondary cross-contamination caused by excess residual liquid in the battery bag after vacuum packaging spilling onto the surface of other battery cells during the battery cell transportation process.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A multi-station linear double-sealing and trimming machine is located beside the battery cell feeding line; it includes a frame, on which a gantry frame, a material transfer module, a vacuum sealing module, and a cutting module are mounted, wherein:

[0006] The gantry is provided with a crossbeam extending in the X direction, and a first slide rail and a second slide rail extending in the X direction are respectively provided on the two side walls of the crossbeam in the Y direction; a third slide rail extending in the Y direction is provided between the two columns below the crossbeam, and the vacuum sealing module and the cutting module are respectively provided above the two ends of the third slide rail in the Y direction.

[0007] The material transfer module includes a loading mechanism, a material transfer mechanism, and a material unloading mechanism. The loading mechanism and the unloading mechanism are respectively mounted on the first slide and the second slide and are respectively connected to the first driving device and the second driving device. The first driving device can drive the loading mechanism to slide along the first slide, and the second driving device can drive the unloading mechanism to slide along the second slide. Each loading mechanism and the unloading mechanism includes a slide base. Each slide base is provided with a fourth driving device and a mounting plate connected to it. Each fourth driving device can drive a mounting plate to slide along the Z direction. Each mounting plate is provided with several sets of suction nozzles. Each set of suction nozzles can pick up a battery cell before or after packaging. The material transfer mechanism includes a material transfer plate provided on the third slide. The material transfer plate is connected to the third driving device and can slide along the third slide under its drive. Several positioning frames are formed at the upper end of the material transfer plate. Each positioning frame can fix a battery cell.

[0008] The vacuum sealing module is located on the Y-axis side of the crossbeam and close to the first slide rail. It includes an upper pressing mechanism located above the third slide rail and a lower sealing mechanism located below it. The upper pressing mechanism includes a fifth driving device and a pressure plate connected to it. The lower end of the pressure plate has several upper cavities and several barbs. The fifth driving device can drive the pressure plate to move along the Z-axis and match and press against a transfer plate, so that the inner wall of each upper cavity presses against the upper end of a battery cell, and each barb pierces and extends into the outer bag of a battery cell. The lower sealing mechanism is located directly below the upper pressing mechanism and includes a sixth driving device and a top plate connected to it. The top plate has several lower cavities and several sets of evacuation channels. The other end of each set of evacuation channels is connected to a vacuum generator. The sixth driving device can drive the top plate to press against a transfer plate, so that each lower cavity fits against the outer contour of an upper cavity, and each set of evacuation channels approaches the outer bag of a battery cell and evacuates it.

[0009] The cutting module is located on the other side of the crossbeam in the Y direction and near the second slide rail. It includes a cutting mechanism located above the material transfer mechanism. The cutting mechanism includes a seventh driving device and a cutting plate connected to it in a transmission manner. The seventh driving device can drive the cutting plate to move in a Z-shape to cut a battery cell packaged on the material transfer plate.

[0010] As a further explanation of the above technical solution:

[0011] In the above technical solution, the number of suction nozzles on each mounting plate, the number of positioning frames on the transfer plate, the number of upper cavities on the pressure plate, the number of upper and lower cavities on the top plate, and the number of air extraction channels are all the same.

[0012] In the above technical solution, the first driving device, the second driving device, the third driving device, the fourth driving device, the fifth driving device and the sixth driving device are all circular motion driving devices, and they are all connected to the slide, the transfer plate, the mounting plate, the pressure plate or the top plate through a reversing transmission pair and can transmit their linear motion.

[0013] In the above technical solution, the seventh driving device is a linear motion driving device, and it is connected to the cutting board through a synchronizing element and can transmit its linear motion.

[0014] In the above technical solution, the gantry frame has a plurality of third slides arranged in the X direction between its two columns. Each third slide is provided with a transfer plate. Each transfer plate has a pressure plate above one end in the Y direction and a top plate below it. Each transfer plate has a cutting plate above the other side in the Y direction.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a cutting module on the side of the vacuum sealing module and connecting it with the material transfer mechanism, the gas bag and corner waste with electrolyte on it can be directly cut off after the packaging is completed without moving the battery cell, and the battery cell can be transported to the next process by the unloading mechanism. This avoids the problem of secondary cross-contamination caused by the excess residual liquid in the battery bag after vacuum packaging spilling onto the surface of other battery cells during the battery cell transportation process. Attached Figure Description

[0016] Figure 1 This is a top view of the structure of this embodiment;

[0017] Figure 2 This is a side view of the structure in this embodiment;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of this embodiment.

[0019] In the diagram: 100, frame; 200, gantry frame; 21, crossbeam; 22, first slide rail; 23, second slide rail; 24, third slide rail; 31, loading mechanism; 32, transferring mechanism; 33, unloading mechanism; 301, slide block; 302, mounting plate; 303, suction nozzle; 304, transferring plate; 400, vacuum sealing module; 41, upper pressing mechanism; 42, lower sealing mechanism; 401, pressure plate; 404, top plate; 500, cutting module; 51, cutting mechanism; 501, cutting plate; 600, battery cell; 4, fourth drive device; 5, fifth drive device; 6, sixth drive device; 7, seventh drive device. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] The embodiments described with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "several" or "more than" means two or more, unless otherwise explicitly specified. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] like Figure 1-3 As shown, a multi-station linear double-sealing and trimming machine is located beside the battery cell feeding line; it includes a frame 100, on which a gantry frame 200, a material transfer module, a vacuum sealing module 400, and a cutting module 500 are mounted, wherein:

[0023] A crossbeam 21 extending in the X direction is provided on the gantry frame 200. A first slide rail 22 and a second slide rail 23 extending in the X direction are respectively provided on the two side walls of the crossbeam 21 in the Y direction. A third slide rail 24 extending in the Y direction is provided between the two columns below the crossbeam 21. A vacuum sealing module 400 and a cutting module 500 are respectively provided above the two ends of the third slide rail 24 in the Y direction.

[0024] The material transfer module includes a loading mechanism 31, a transfer mechanism 32, and a unloading mechanism 33. The loading mechanism 31 and the unloading mechanism 33 are respectively mounted on the first slide rail 22 and the second slide rail 23 and are respectively connected to the first driving device and the second driving device. The first driving device can drive the loading mechanism 31 to slide along the first slide rail 22, and the second driving device can drive the unloading mechanism 33 to slide along the second slide rail 23. Both the loading mechanism 31 and the unloading mechanism 33 include a slide block 301, and each slide block 301 is provided with a fourth driving device 4 and connected to it. The mounting plate 302 is connected to the fourth driving device 4, which can drive the mounting plate 302 to slide along the Z direction. Each mounting plate 302 is provided with several sets of suction nozzles 303, and each set of suction nozzles 303 can pick up a battery cell 600 before or after packaging. The material transfer mechanism 32 includes a material transfer plate 304 provided on the third slide rail 24. The material transfer plate 304 is connected to the third driving device and can slide along the third slide rail 24 under its drive. Several positioning frames are formed at the upper end of the material transfer plate 304, and a battery cell 600 can be fixed on each positioning frame.

[0025] The vacuum sealing module 400 is located on the Y-direction side of the crossbeam 200 and close to the first slide rail 22. It includes an upper pressing mechanism 41 located above the third slide rail 24 and a lower sealing mechanism 42 located below it. The upper pressing mechanism 41 includes a fifth driving device 5 and a pressure plate 401 connected to it. The lower end of the pressure plate 401 is formed with several upper cavities and several barbs. The fifth driving device 5 can drive the pressure plate 401 to move along the Z-direction and match and press against a transfer plate 304, so that the inner wall of each upper cavity presses against the upper end of a cell 600. And each barb pierces and extends into the outer bag of a battery cell 600; the lower sealing mechanism 42 is located directly below the upper pressing mechanism 41, including a sixth driving device 6 and a top plate 404 connected to it in a transmission manner. The top plate 404 has a plurality of lower cavities and a plurality of sets of air extraction channels. The other end of each of the air extraction channels is connected to a vacuum generating device. The sixth driving device 6 can drive the top plate 404 to press against a material transfer plate so that each lower cavity fits against the outer contour of an upper cavity, and makes each set of air extraction channels close to the outer bag of a battery cell 600 and vacuum it.

[0026] The cutting module 500 is located on the other side of the crossbeam 21 in the Y direction and close to the second slide rail 23. It includes a cutting mechanism 51 located above a material transfer mechanism 32. The cutting mechanism 51 includes a seventh drive device 7 and a cutting plate 501 connected to it. The seventh drive device 7 can drive the cutting plate 501 to move along a Z-shape to cut the packaged battery cell 600 on the material transfer plate 304.

[0027] To simplify the accompanying drawings, Figure 1-3 The first and second drive devices mounted on the crossbeam 21 of the gantry 200 and the third drive device mounted between the two columns of the gantry 200 are not shown. The positioning frame on the transfer plate 304, the upper cavity and barbs on the pressure plate 401, the lower cavity and air extraction channel on the top plate 404 are also not shown. Only the structure of a suction nozzle 303 on the mounting plate 302 is shown. These structural settings are all prior art and will not be described in detail or limited here.

[0028] During operation, the fourth drive device 4 on the feeding mechanism 31 drives the slide 301 to move along the Z direction, simultaneously picking up several battery cells 600 from the battery cell feeding line (not shown). The first drive device drives it to slide along the X direction on the first slide 22 and move it above the third slide 24. The third drive device drives the transfer plate 304 to move directly below the mounting plate 302. The suction nozzle 303 simultaneously places several battery cells 600 one by one onto the positioning frame to complete the feeding. The third drive device drives the transfer plate 304 to move directly below the upper pressing mechanism 41. The fifth drive device 5 drives the pressing plate 401 to move down and press each battery cell 600 from the top, and the barbs on it puncture each battery cell 600. The outer bag is sealed, and the lower sealing mechanism 42 moves upward to press against each battery cell 600 from the bottom. The vacuum generating device extracts the gas from the outer bag of each battery cell 600 through the air extraction channel on the top plate 404 to form a vacuum bag. After the inner bag is squeezed out, the electrolyte fills the outer bag. The pressing plate 401 cooperates with the top plate 404 to press and vacuum seal the battery cell 600. After completion, the upper pressing structure 41 and the lower sealing mechanism 42 return to their positions. The third driving device drives the transfer plate 304 to move several vacuum-sealed battery cells 600 to the side of the cutting mechanism 51. The seventh driving device 7 drives the cutting plate 51 to move downward to the side or periphery of the sealed battery cell 600, removing excess packaging material and gas bags contaminated with electrolyte. After completion, the third driving device drives the transfer mechanism 32 to move directly below the unloading mechanism 33. The fourth driving device 4 and the second driving device work together to simultaneously transfer several packaged and cut battery cells 600 on the transfer plate 304 to the next station.

[0029] In this embodiment, to ensure perfect fitting between the upper and lower cavities, both the upper pressing mechanism 41 and the lower sealing mechanism 42 are equipped with guide structures (guide rods, guide posts, and guide sleeves). The upper pressing mechanism 41 is also equipped with a drive device and a transmission plate that can finely adjust the Y-axis coordinate of the pressure plate 401. To ensure sealing quality, heating blocks are provided on the pressure plate 401 around each upper cavity, and a lower sealing head is provided on the top plate 404 around each lower cavity. These mechanisms are all prior art, and their specific structures will not be described or limited here.

[0030] Furthermore, the number of suction nozzles 303 on each mounting plate 302, the number of positioning frames on the transfer plate 304, the number of upper cavities on the pressure plate 401, the number of upper and lower cavities on the top plate 404, and the number of air extraction channels are all the same.

[0031] In this embodiment, both mounting plates 302 can simultaneously pick up four battery cells at a time. The transfer plate 306, the pressure plate 401, and the transfer plate 304 are each provided with four cavities that can accommodate battery cells. The pressure plate 401 is provided with four barbs, and the top plate 404 is provided with four sets of air extraction channels.

[0032] Furthermore, the first drive device, the second drive device, the third drive device, the fourth drive device 4, the fifth drive device 5 and the sixth drive device 6 are all circular motion drive devices, and are all connected to the slide, the transfer plate, the mounting plate, the pressure plate or the top plate through a reversing transmission pair and can transmit their linear motion. The seventh drive device 7 is a linear motion drive device, and is connected to the cutting plate 501 through a synchronizing element and can transmit its linear motion.

[0033] In this embodiment, the circular motion drive device is a servo motor, which, in conjunction with the reversing transmission pair, is suitable for transmitting linear displacement over longer distances and provides smoother transmission, ensuring stable cell transmission operations. In this embodiment, the linear motion drive device is a linear cylinder, which can precisely control the displacement and speed of the cutting plate 501, achieving high precision and ensuring cutting quality.

[0034] Furthermore, the gantry 200 has several third slides 24 arranged in the X direction between its two columns. Each third slide 24 is provided with a transfer plate 304. Each transfer plate 304 has a pressure plate 401 above one end in the Y direction and a top plate 404 below it. Each transfer plate 304 has a cutting plate 501 above the other side in the Y direction.

[0035] To further balance production time and improve efficiency, this embodiment sets up three sets of matching upper pressing mechanism 41, lower sealing mechanism 42, material transfer mechanism 32 and cutting mechanism 51, which work together with feeding mechanism 31 and unloading mechanism 34 to achieve efficient and smooth operation of each mechanism.

[0036] This invention provides a cutting module 500 located next to the vacuum sealing module 400 and connected to it via a material transfer mechanism 32. This allows for the direct cutting off of the electrolyte-laden gas bag and corner waste material after packaging without moving the battery cell 600. The battery cell 600 is then transported to the next process via a material unloading mechanism 33. This avoids the problem of secondary cross-contamination caused by excess residual liquid from the vacuum packaging bag spilling onto the surface of other battery cells 600 during the transport of the battery cell 600.

[0037] The above does not limit the technical scope of this utility model. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. A multi-station linear double-sealing edge-cutting machine, located beside the battery cell feeding line; characterized in that, The system includes a frame, on which a gantry frame, a material transfer module, a vacuum sealing module, and a cutting module are mounted, wherein: The gantry is provided with a crossbeam extending in the X direction, and a first slide rail and a second slide rail extending in the X direction are respectively provided on the two side walls of the crossbeam in the Y direction; a third slide rail extending in the Y direction is provided between the two columns below the crossbeam, and the vacuum sealing module and the cutting module are respectively provided above the two ends of the third slide rail in the Y direction. The material transfer module includes a loading mechanism, a material transfer mechanism, and a material unloading mechanism. The loading mechanism and the unloading mechanism are respectively mounted on the first slide and the second slide and are respectively connected to the first driving device and the second driving device. The first driving device can drive the loading mechanism to slide along the first slide, and the second driving device can drive the unloading mechanism to slide along the second slide. Each loading mechanism and the unloading mechanism includes a slide base. Each slide base is provided with a fourth driving device and a mounting plate connected to it. Each fourth driving device can drive a mounting plate to slide along the Z direction. Each mounting plate is provided with several sets of suction nozzles. Each set of suction nozzles can pick up a battery cell before or after packaging. The material transfer mechanism includes a material transfer plate provided on the third slide. The material transfer plate is connected to the third driving device and can slide along the third slide under its drive. Several positioning frames are formed at the upper end of the material transfer plate. Each positioning frame can fix a battery cell. The vacuum sealing module is located on the Y-axis side of the crossbeam and close to the first slide rail. It includes an upper pressing mechanism located above the third slide rail and a lower sealing mechanism located below it. The upper pressing mechanism includes a fifth driving device and a pressure plate connected to it. The lower end of the pressure plate has several upper cavities and several barbs. The fifth driving device can drive the pressure plate to move along the Z-axis and match and press against a transfer plate, so that the inner wall of each upper cavity presses against the upper end of a battery cell, and each barb pierces and extends into the outer bag of a battery cell. The lower sealing mechanism is located directly below the upper pressing mechanism and includes a sixth driving device and a top plate connected to it. The top plate has several lower cavities and several sets of evacuation channels. The other end of each set of evacuation channels is connected to a vacuum generator. The sixth driving device can drive the top plate to press against a transfer plate, so that each lower cavity fits against the outer contour of an upper cavity, and each set of evacuation channels approaches the outer bag of a battery cell and evacuates it. The cutting module is located on the other side of the crossbeam in the Y direction and near the second slide rail. It includes a cutting mechanism located above the material transfer mechanism. The cutting mechanism includes a seventh driving device and a cutting plate connected to it in a transmission manner. The seventh driving device can drive the cutting plate to move in a Z-shape to cut a battery cell packaged on the material transfer plate.

2. The multi-station linear double-sealing edge-cutting machine according to claim 1, characterized in that, The number of suction nozzles on each mounting plate, the number of positioning frames on the transfer plate, the number of upper cavities on the pressure plate, the number of upper and lower cavities on the top plate, and the number of air extraction channels are all the same.

3. The multi-station linear double-sealing edge-cutting machine according to claim 1, characterized in that, The first, second, third, fourth, fifth, and sixth driving devices are all circular motion driving devices, and they are all connected to the slide, transfer plate, mounting plate, pressure plate, or top plate through a reversing transmission pair and can transmit their linear motion.

4. The multi-station linear double-sealing edge-cutting machine according to claim 1, characterized in that, The seventh driving device is a linear motion driving device, and it is connected to the cutting board through a synchronizing element and can transmit its linear motion.

5. The multi-station linear double-sealing edge-cutting machine according to any one of claims 1-4, characterized in that, The gantry frame has several third slides arranged along the X direction between its two columns. Each third slide is provided with a transfer plate. Each transfer plate has a pressure plate above one end in the Y direction and a top plate below it. Each transfer plate has a cutting plate above the other side in the Y direction.

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