Internal stretching type multi-layer powder slicking system and powder slicking process based on internal stretching type multi-layer powder slicking system

Abstract

The invention discloses an internal stretching type multi-layer powder slicking system which comprises a rack, a scraper blade, a plate driving manipulator and a mold, a mold and a plate driving manipulator are mounted on the frame, the top surface of the mold is recessed to form a powder cavity, the mold is positioned below the output end of the plate driving manipulator, and a scraper is mounted at the output end of the plate driving manipulator and can extend into the powder cavity under the driving of the plate driving manipulator. According to the internal stretching type multi-layer powder slicking system, the problem that in the prior art, electricity is conducted between an upper conducting layer and a lower conducting layer through stayed lower conducting layer powder is solved.

Description

Technical Field

[0001] This invention relates to the field of thermal battery powder leveling, specifically to an internally extended multi-layer powder leveling system and a powder leveling process based thereon. Background Technology

[0002] In the battery production process, at least three layers of powder need to be stacked. The three layers are an upper conductive layer, an insulating layer, and a lower conductive layer. The upper conductive layer is located above the lower conductive layer, and the upper conductive layer and the lower conductive layer are separated by an insulating layer.

[0003] To form the aforementioned upper conductive layer, insulating layer, and lower conductive layer using powder stacking, a powder leveling device is required. In the prior art, the powder leveling device includes: a scraper, a plate-driven robot, a mold, a lifting mechanism, and a frame. The mold includes: an annular container and a base plate. The top surface of the annular container is recessed to form a powder cavity. The base plate is located within the powder cavity and can be raised and lowered relative to the powder cavity. The base plate supports the upper conductive layer, insulating layer, and lower conductive layer. The annular container is placed on the frame, and a lifting mechanism is installed on the frame. The output end of the lifting mechanism extends from the bottom of the annular container. The lifting mechanism is used to raise or lower the base plate. A plate-driven robot is installed next to the frame, and its output end is fixed to the scraper. The scraper scrapes the powder from the top of the powder cavity.

[0004] The powder leveling equipment described above performs the following steps: When it is necessary to scrape the bottom conductive layer, the lifting mechanism raises the bottom plate so that the volume of the powder cavity above the bottom plate is exactly the volume of the bottom conductive layer; then, the bottom conductive layer powder is placed in; next, the plate-driven robot drives the scraper to move on the top surface of the annular container so that the top surface of the bottom conductive layer is flush with the top surface of the annular container, thus leveling the bottom conductive layer; then, the lifting mechanism lowers the bottom plate and the bottom conductive layer, forming an insulating layer placement space between the top surface of the bottom conductive layer and the top surface of the annular container; then, the insulating layer is leveled in the placement space in the direction of leveling the bottom conductive layer; finally, the lifting mechanism lowers the bottom plate again, lowering the bottom conductive layer and the insulating layer, forming an upper conductive layer placement space between the top surface of the insulating layer and the top surface of the annular container; then, the upper conductive layer is leveled in the placement space in the direction of leveling the bottom conductive layer.

[0005] As can be seen from the above leveling steps, the lower conductive layer needs to be lowered twice. The lower conductive layer will pass through the positions where the insulating layer and the upper conductive layer stop. The lower conductive layer stops at the positions of the insulating layer and the upper conductive layer, causing the lower conductive layer powder to stick to the inner wall of the annular container. Therefore, the lower conductive layer powder is very likely to appear at the edges of the insulating layer and the edges of the upper conductive layer. This means that the upper conductive layer and the lower conductive layer cannot be isolated by the insulating layer. The upper conductive layer and the lower conductive layer conduct electricity through the stopped lower conductive layer powder. This cannot guarantee the requirement that the upper conductive layer and the lower conductive layer cannot be energized in the battery product. Summary of the Invention

[0006] The present invention provides an internally extending multi-layer powder leveling system and a powder leveling process based thereon, which solves the problem in the prior art that the upper conductive layer and the lower conductive layer conduct electricity through the powder of the lower conductive layer that remains there.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: The present invention first discloses an internally extending multi-layer powder leveling system, including: a frame, a scraper, a plate-driven robot, and a mold; the mold and the plate-driven robot are installed on the frame, the top surface of the mold is recessed to form a powder cavity, the mold is located below the output end of the plate-driven robot, the output end of the plate-driven robot is equipped with a scraper, and the scraper can extend into the powder cavity under the drive of the plate-driven robot.

[0008] Preferably, a rotary drive device is mounted on the frame, and a mold is mounted on the output end of the rotary drive device.

[0009] Preferably, the scraper can move radially relative to the output end of the plate-driven robot in the mold, and the scraper is connected to the output end of the plate-driven robot through an inner wall fastening part, so that the scraper can be tightly attached to the inner wall of the powder chamber under the action of the inner wall fastening part.

[0010] Preferably, the inner wall fastening part includes: a fastening spring, one end of which is connected to the scraper, and the other end of which is connected to the output end of the rotary drive device.

[0011] Preferably, the inner wall fastening part includes: a fastening cylinder, the fastening cylinder is installed at the output end of the rotary drive device, and the output end of the fastening cylinder is connected to the scraper.

[0012] Preferably, an edge powder scraping device is installed at the output end of the plate-driven robot. The edge powder scraping device is used to scrape powder from the top surface of the mold into the powder cavity by being in close contact with the top surface of the mold.

[0013] Preferably, the edge powder scraping device can move vertically relative to the output end of the plate-driven robot, and a downward pressure supply part is installed between the output end of the plate-driven robot and the edge powder scraping device. The downward pressure supply part is used to make the edge powder scraping device fit tightly against the top surface of the mold.

[0014] Preferably, the downward pressure supply part includes: an elastic part, one end of which is connected to the output end of the plate drive robot, and the other end of which is connected to the edge powder scraping device. The elasticity of the elastic part is used to make the edge powder scraping device fit tightly against the top surface of the mold.

[0015] Preferably, the pressure supply unit includes a pressure cylinder, which is mounted on the output end of the plate drive robot. The output end of the pressure cylinder is connected to the edge powder scraping device, and the pressure cylinder is used to make the edge powder scraping device fit tightly against the top surface of the mold.

[0016] Preferably, the plate-driven robot includes: a first linear drive device, a first movable seat, a lifting drive device, a lifting seat, a second linear drive device, and a second movable seat. The first linear drive device is mounted on a frame, and the output end of the first linear drive device is fixed to the first movable seat. The lifting drive device is mounted on the first movable seat, and the output end of the lifting drive device is connected to the lifting seat. The second linear drive device is mounted on the lifting seat, and the output end of the second linear drive device is connected to the second movable seat. The second movable seat is the output end of the plate-driven robot.

[0017] This invention also discloses an internally inserted multi-layer powder leveling process, comprising the following steps: Step 1, installing a mold containing powder below the output end of a plate-driven robot; Step 2, the plate-driven robot drives a scraper to extend into the mold, with the scraper positioned on top of the powder; Step 3, a rotation drive device operates, causing the mold to rotate relative to the scraper, thereby performing the powder leveling operation.

[0018] Compared to existing technologies, this invention has the following advantages: This application breaks away from the traditional method of leveling by scraping the top surface of the mold with a scraper, and no longer achieves leveling by aligning the powder top surface with the top surface of the mold. Instead, it uses a scraper that can extend into the mold. The tube plate no longer scrapes only above the top surface of the mold, but extends into the mold directly to scrape the powder under the drive of a plate-driven robotic arm. Since the powder does not need to be level with the mold, there is no need for a lifting drive mechanism to raise and lower the bottom plate of the mold. Therefore, the lower conductive layer no longer needs to contact the space between the upper conductive layer and the insulating layer during the lifting process, preventing the lower conductive layer from being energized by the lower conductive layer at the outer edge of the insulating layer, thus ensuring the quality requirement that the lower conductive layer and the upper conductive layer cannot be energized in the product.

[0019] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of an internally inserted multi-layer powder leveling system.

[0021] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0022] Figure 3 This is a schematic diagram of an internally inserted multi-layer powder leveling system.

[0023] Reference numerals: 1. Frame; 2. Scraper; 20. Inner wall fastening part; 3. Plate drive robot; 31. First linear drive device; 32. First moving seat; 33. Lifting drive device; 34. Lifting seat; 35. Second linear drive device; 36. Second moving seat; 4. Mold; 5. Rotary drive device; 6. Edge powder scraping device; 60. Lower pressure supply part; 61. Top surface fastening plate; 62. Lifting frame. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this invention clearer and easier to understand, the invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0025] like Figures 1 to 3 As shown, the present invention discloses an internally extending multi-layer powder leveling system, including: a frame 1, a scraper 2, a plate-driven robot 3, and a mold 4; the mold 4 and the plate-driven robot 3 are installed on the frame 1, the top surface of the mold 4 is recessed to form a powder cavity, the mold 4 is located below the output end of the plate-driven robot 3, the scraper 2 is installed at the output end of the plate-driven robot 3, and the scraper 2 can extend into the powder cavity under the drive of the plate-driven robot 3.

[0026] To ensure that the powder in the mold 4 can rotate relative to the scraper 2, there are two implementation methods. One implementation method is to install a rotary drive device 5 on the frame 1, and install the mold 4 on the output end of the rotary drive device 5. The other implementation method is to enable the scraper 2 to rotate, so that the powder in the mold 4 can rotate relative to the scraper 2. Specifically, the rotary drive device 5 is installed at the second moving seat 36, and the output end of the rotary drive device 5 is connected to the scraper 2.

[0027] During the powder scraping process, the plate-driven robot arm 3 drives the scraper 2 to extend into the mold 4. The scraper 2 contacts the top of the powder, and then drives the mold 4 to rotate relative to the scraper 2, thus completing the powder scraping and leveling operation.

[0028] In this application, the scraper 2 can move radially relative to the output end of the plate-driven robot 3 in the mold 4. The scraper 2 and the output end of the plate-driven robot 3 are connected by an inner wall adhesion part 20. The scraper 2 can adhere tightly to the inner wall of the powder cavity under the action of the inner wall adhesion part 20. There is a possibility of conductivity between the lower conductive layer and the upper conductive layer; it is also possible that when the lower conductive layer is poured into the mold 4, it adheres to the inner wall of the mold 4 of the insulating layer and the upper conductive layer. Therefore, in order to level the powder, the scraper 2 also needs to adhere tightly to the inner wall of the mold 4. So how to consider the problem of the scraper 2 adhering tightly to the inner wall of the mold 4? Based on the need to achieve the function of the scraper 2 adhering tightly to the inner wall of the mold 4, an inner wall adhesion part was designed.

[0029] There are two implementation methods for tightly attaching the plate to the inner wall of the mold 4.

[0030] The first embodiment of the inner wall contact part is as follows: the inner wall contact part 20 includes a contact spring, one end of which is connected to the scraper 2, and the other end of which is connected to the output end of the rotary drive device 5. After the second linear drive device 35 drives the first moving seat 32, the second linear drive device 35 drives the scraper 2 to run slightly more, so that the contact spring is compressed or stretched, and the elastic force makes the scraper 2 fit tightly against the inner wall of the mold 4.

[0031] A second embodiment of the inner wall contact portion is as follows: the inner wall contact portion 20 includes a contact cylinder, which is mounted on the output end of the rotary drive device 5, and the output end of the contact cylinder is connected to the scraper 2. The extension and retraction direction of the contact cylinder is the same as the driving direction of the second linear drive device 35. Of course, in this embodiment, the second linear drive device 35 can be directly used as the inner wall contact portion.

[0032] The differences between the second and first embodiments are explained below:

[0033] In the second embodiment, since the vertical sidewall of the scraper 2 cannot be aligned with the inner wall of the mold 4 after the mold 4 and the scraper 2 are installed, no matter how the second linear drive device 35 or the cylinder is driven, the scraper 2 will be damaged by the inner wall of the mold 4, or there will be a gap between the scraper 2 and the inner wall of the mold 4.

[0034] In the first embodiment, the scraper 2 is driven by the second linear drive device 35 to move a long distance toward the inner wall of the mold 4, causing the spring to deform and thus the scraper 2 to stick to the inner wall of the mold 4.

[0035] To address the shortcomings of the second embodiment, an elastic block can also be provided on the vertical sidewall of the scraper 2, with the elastic block in close contact with the inner wall of the mold 4. This elastic contact with the inner wall of the mold 4 can compensate for the relative positional difference between the mold 4 and the scraper 2, ensuring that the scraper 2 remains in close contact with the inner wall of the mold 4 via the elastic block. This allows the powder to be scraped off the inner wall of the mold 4, preventing the powder from the lower conductive layer from remaining on the insulating layer and the upper conductive layer, thus effectively preventing the lower and upper conductive layers from becoming electrically connected.

[0036] In this application, an edge powder scraping device 6 is installed at the output end of the plate-driven robot 3. The edge powder scraping device 6 is used to scrape powder from the top surface of the mold 4 into the powder cavity by closely adhering to the top surface of the mold 4.

[0037] When scraper 2 scrapes the powder in mold 4, scraper 2 rotates relative to mold 4, and scraper 2 disturbs the airflow. The airflow causes the powder in mold 4 to be blown up and blown to the top surface of mold 4. Since the powder is fed into mold 4 in a metered manner, the powder blown to the top surface of mold 4 causes the powder quality in mold 4 to be insufficient. In order to avoid the loss of powder on the top surface of mold 4, edge powder scraping device 6 is designed. When scraper 2 scrapes the powder in mold 4, edge powder scraping device 6 scrapes the powder on the top surface of mold 4 into mold 4. Edge powder scraping device 6 rotates relative to mold 4 together with scraper 2.

[0038] In this application, the edge powder scraping device 6 can move vertically relative to the output end of the plate drive robot 3. A downward pressure providing part 60 is installed between the output end of the plate drive robot 3 and the edge powder scraping device 6. The downward pressure providing part 60 is used to make the edge powder scraping device 6 fit tightly against the top surface of the mold 4.

[0039] The edge powder scraping device 6 is installed next to the scraper 2. The heights of the conductive layer, insulating layer and upper conductive layer scraped off by the scraper 2 are different. Therefore, the edge powder scraping device 6 is designed to move vertically relative to the output end of the plate-driven robot 3. And through the downward pressure supply part 60, the edge powder scraping device 6 can still stick to the top surface of the mold 4 when the scraper 2 is at different heights.

[0040] In this application, the edge powder scraping device 6 includes: a top surface contact plate 61 and a lifting frame 62. The lifting frame 62 is vertically mounted on the output end of the plate drive robot 3. The bottom of the lifting frame 62 is fixed with the top surface contact plate 61. The top surface contact plate 61 is used to contact the top surface of the mold 4. The top surface contact plate 61 and the scraper 2 form an acute angle, so that when the scraper 2 and the top surface contact plate 61 rotate together relative to the mold 4, the top surface contact plate 61 tends to scrape the powder on the top surface of the mold 4 into the mold 4, thereby achieving the effect of scraping the powder on the top surface of the mold 4 into the mold 4.

[0041] In this application, the downward pressure providing part 60 has two implementations to ensure that the top surface of the scraper 2 is always in close contact with the top surface of the mold 4 when scraping powder at different heights.

[0042] The first embodiment of the downward pressure providing part 60 is as follows: The downward pressure providing part 60 includes an elastic part, one end of which is connected to the output end of the plate drive robot 3, and the other end of which is connected to the edge powder scraping device 6. The elasticity of the elastic part is used to make the edge powder scraping device 6 fit tightly against the top surface of the mold 4. In this embodiment, the elastic part is a spring.

[0043] A second embodiment of the downward pressure providing unit 60 includes a downward pressure cylinder mounted on the output end of the plate-driven robot 3. The output end of the downward pressure cylinder is connected to the edge powder scraping device 6. The downward pressure cylinder is used to ensure that the edge powder scraping device 6 is in close contact with the top surface of the mold 4. In this embodiment, the downward pressure cylinder drives the edge powder scraping device 6 to rise and fall to compensate for changes in the height of the scraper 2.

[0044] The difference between the first and second embodiments of the downward pressure supply unit 60 is that the second embodiment provides a power source. Although it can achieve its function, the second embodiment consumes a lot of energy and the power source is expensive. The first embodiment does not require additional energy consumption, which is environmentally friendly, and the cost of the elastic part is relatively small.

[0045] In this application, the plate-driven robot 3 includes: a first linear drive device 31, a first movable seat 32, a lifting drive device 33, a lifting seat 34, a second linear drive device 35, and a second movable seat 36. The first linear drive device 31 is mounted on the frame 1, and its output end is fixed to the first movable seat 32. The lifting drive device 33 is mounted on the first movable seat 32, and its output end is connected to the lifting seat 34. The second linear drive device 35 is mounted on the lifting seat 34, and its output end is connected to the second movable seat 36. The second movable seat 36 is the output end of the plate-driven robot 3. The driving directions of the first linear drive device 31 and the second linear drive device 35 are parallel to the horizontal direction, and the driving direction of the first linear drive device 31 is perpendicular to the driving direction of the second linear drive device 35. The driving direction of the second linear drive device 35 causes the scraper 2 to move radially in the mold 4.

[0046] In this application, firstly, to avoid the lower conductive layer from staying at the storage positions of the insulating layer and the upper conductive layer due to the lifting of the bottom plate of the mold 4 in the prior art, the scraper 2 is designed to no longer scrape powder above the top surface of the mold 4, but to extend directly into the mold 4 to scrape powder, thereby avoiding the lower conductive layer and the upper conductive layer becoming conductive due to the lifting of the bottom plate of the mold 4; secondly, to prevent powder from drifting to the storage positions of the insulating layer and the upper conductive layer on the inner wall of the mold 4 during scraping, the scraper 2 is designed to be in close contact with the inner wall of the mold 4; and finally, because the installation position of the mold 4 and the scraper 2 are... Due to installation errors, the second linear drive device 35 cannot drive the scraper 2 to fit tightly against the inner wall of the mold 4. Therefore, an elastic block is installed on the vertical wall of the scraper 2, or the scraper 2 is elastically connected to the output end of the plate drive robot 3, so as to ensure that the scraper 2 can fit tightly against the inner wall of the mold 4. Furthermore, in order to scrape the powder overflowing onto the top surface of the mold 4 back into the mold 4, an edge powder scraping device 6 is designed. Then, since the scraper 2 needs to scrape multiple layers of powder, in order to adapt to the change in the height of the scraper 2 during the scraping process, an edge powder scraping device 6 is designed to be provided with downward pressure 60.

[0047] This invention also discloses an internally inserted multi-layer powder leveling process, which is implemented based on the internally inserted multi-layer powder leveling system. The internally inserted multi-layer powder leveling process includes the following steps: Step 1, installing a mold 4 containing powder below the output end of a plate-driven robot 3; Step 2, the plate-driven robot 3 drives a scraper 2 to move, extending the scraper 2 into the mold 4, with the scraper 2 positioned on top of the powder; Step 3, the rotation drive device 5 operates, causing the mold 4 to rotate relative to the scraper 2, performing the powder leveling operation.

[0048] After step two is executed and before step three is executed, the scraper 2 adheres tightly to the inner wall of the mold 4; the second linear drive device 35 drives the scraper 2 to move towards the inner wall of the mold 4, causing the inner wall to deform further and ensuring a tight fit. This prevents lower layer powder from remaining in the upper layer powder position.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An internally extending multi-layer powder leveling system, characterized in that, include: The machine includes a frame, a scraper, a plate-driven robot, and a mold. The mold and the plate-driven robot are mounted on the frame. The top surface of the mold is recessed to form a powder cavity. The mold is located below the output end of the plate-driven robot. A scraper is mounted on the output end of the plate-driven robot. The scraper can extend into the powder cavity under the drive of the plate-driven robot.

2. The internally extending multi-layer powder leveling system according to claim 1, characterized in that, A rotary drive device is mounted on the frame, and a mold is mounted on the output end of the rotary drive device.

3. The internally extending multi-layer powder leveling system according to claim 1 or 2, characterized in that, The scraper can move radially relative to the output end of the plate-driven robot. The scraper and the output end of the plate-driven robot are connected through an inner wall fastening part. Under the action of the inner wall fastening part, the scraper can stick tightly to the inner wall of the powder chamber.

4. The internally extending multi-layer powder leveling system according to claim 1, characterized in that, The inner wall fastening part includes: a fastening spring, one end of which is connected to the scraper, and the other end of which is connected to the output end of the rotary drive device.

5. The internally extending multi-layer powder leveling system according to claim 4, characterized in that, The inner wall fastening part includes: a fastening cylinder, which is installed at the output end of the rotary drive device, and the output end of the fastening cylinder is connected to the scraper.

6. The internally extending multi-layer powder leveling system according to claim 1, characterized in that, An edge powder scraping device is installed at the output end of the plate-driven robot. The edge powder scraping device is used to scrape the powder on the top surface of the mold into the powder cavity by closely adhering to the top surface of the mold.

7. The internally extending multi-layer powder leveling system according to claim 6, characterized in that, The edge powder scraping device can move vertically relative to the output end of the plate drive robot. A downward pressure supply part is installed between the output end of the plate drive robot and the edge powder scraping device. The downward pressure supply part is used to make the edge powder scraping device fit tightly against the top surface of the mold.

8. The internally extending multi-layer powder leveling system according to claim 6, characterized in that, The downward pressure supply unit includes: an elastic part, one end of which is connected to the output end of the plate drive robot, and the other end of which is connected to the edge powder scraping device. The elasticity of the elastic part is used to make the edge powder scraping device fit tightly against the top surface of the mold.

9. The internally extending multi-layer powder leveling system according to claim 6, characterized in that, The pressure supply unit includes a pressure cylinder, which is installed at the output end of the plate drive robot. The output end of the pressure cylinder is connected to the edge powder scraping device. The pressure cylinder is used to make the edge powder scraping device fit tightly against the top surface of the mold.

10. An internally extending multi-layer powder leveling process, characterized in that, Includes the following steps: Step 1: Install the mold containing powder below the output end of the plate-driven robot. Step 2: The plate-driven robot arm drives the scraper to extend into the mold, with the scraper positioned on top of the powder. Step 3: The rotary drive device operates, causing the mold to rotate relative to the scraper, thus performing the powder scraping and leveling operation.

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