Platform lifting device for bearing heavy pressure

Abstract

The platform lifting device for bearing the heavy pressure comprises a movable bottom plate, a machine frame, a positioning adjusting movable assembly, an upper pressing head, an upper pressing driving device, a top pressing mechanism and a bearing mechanism, the machine frame is arranged at the top of the movable bottom plate, the upper pressing driving device is vertically arranged at the top of the machine frame, the upper pressing head is arranged at the output end of the upper pressing driving device, and the bearing mechanism is arranged at the output end of the top pressing driving device. The bearing mechanism is arranged at the top of the movable bottom plate and located on one side of the rack, the jacking mechanism is arranged on one side face of the rack and located above the bearing mechanism, and the positioning adjusting moving assembly is transversely arranged at the bottom of the movable bottom plate. According to the utility model, the overall rigidity and the supporting force are good, and the electrode pole piece manufactured by adopting the die is high in yield and good in quality; the problems that copper foil and lithium foil laminates are not firmly pressed, the electrode pole piece manufacturing effect is poor, the yield is low and the like due to the fact that a mechanism for installing a lower pressing head is small in rigidity and insufficient in supporting force when an electrode pole piece is manufactured in an assembly line work mode in the market at present are solved.

Description

Technical Field

[0001] This utility model relates to the field of platform lifting devices, and in particular to a platform lifting device for bearing heavy pressure. Background Technology

[0002] The electrode structure of a battery mainly includes positive and negative electrodes, which play a crucial role in the battery. The negative electrode of a solid-state battery is made by laminating copper foil and lithium foil layers. The production of negative electrodes from dissimilar materials mainly involves using an upper and lower pressure head to simultaneously press the copper and lithium foil layers together. Because the production of electrode sheets is carried out in an assembly line manner, the mechanism for mounting the lower pressure head has low rigidity. Insufficient support force on the lower pressure head can easily cause the copper and lithium foil layers to be loosely bonded, resulting in poor electrode sheet production quality, low yield, and high equipment maintenance costs. Furthermore, the insufficient rigidity of the lower pressure head may also pose safety hazards during production. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a platform lifting device for bearing heavy loads.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The platform lifting device for bearing heavy pressure includes a movable base plate, a frame, a positioning and adjusting moving component for positioning and adjusting the movable base plate, an upper pressure head for pressing the upper surface of the copper foil and lithium foil laminate, an upper pressure driving device for driving the upper pressure head to press the upper surface of the copper foil and lithium foil laminate, a pressing mechanism for pressing the lower surface of the copper foil and lithium foil laminate, and a bearing mechanism for driving the pressing mechanism to press the lower surface of the copper foil and lithium foil laminate. The frame is installed on the top of the movable base plate, the upper pressure driving device is vertically installed on the top of the frame, the upper pressure head is installed on the output end of the upper pressure driving device, the bearing mechanism is installed on the top of the movable base plate and located on one side of the frame, the pressing mechanism is installed on one side of the frame and located above the bearing mechanism, and the positioning and adjusting moving component is horizontally installed on the bottom of the movable base plate.

[0005] By adopting the above technical solution, the position of the moving base plate and frame is adjusted through the positioning and adjustment moving component. After the copper foil and lithium foil are stacked together and placed between the upper pressure head and the top pressure mechanism, the supporting mechanism lifts the top pressure mechanism to support the stacked copper foil and lithium foil. At the same time, the upper pressure drive device drives the upper pressure head to descend, pressing the stacked copper foil and lithium foil onto the top pressure mechanism. The upper pressure head and the top pressure mechanism work together to firmly press the stacked copper foil and lithium foil together, thus forming the negative electrode sheet of the battery. By setting a supporting mechanism below the top pressure mechanism to enhance the rigidity of the top pressure mechanism and increase its supporting force, this solves the problems of poor electrode sheet production effect, low yield, high equipment maintenance costs, and production safety hazards caused by the low rigidity and insufficient supporting force of the lower pressure head in the current negative electrode sheet manufacturing mechanism.

[0006] Preferably, the bearing mechanism includes a bearing platform translation drive device, a first ball screw, a first linear guide rail, and a bearing platform. The first linear guide rail is horizontally mounted on the movable base plate. The bearing platform is slidably mounted on the movable base plate via the first linear guide rail. The first ball screw is horizontally mounted on the movable base plate. The bearing platform translation drive device is horizontally mounted on the movable base plate and is connected to the bearing platform via the first ball screw. The top of the bearing platform has a curved surface design with one high and one low. Buffers are installed on the movable base plate along the direction of movement of the bearing platform and on both sides of the bearing platform to buffer the back-and-forth movement of the bearing platform.

[0007] Specifically, a first sensor, a second sensor, and a third sensor are respectively provided on one side of the movable base plate, and a sensing sheet that works in conjunction with the first sensor, the second sensor, and the third sensor is provided on one side of the support platform.

[0008] Preferably, the pressing mechanism includes a pressing head for pressing the lower surface of the copper foil and lithium foil laminate, a pressing base for mounting and fixing the pressing head, a pressing bracket for mounting and fixing the pressing base, a pressing support for supporting the pressing bracket, a pad for protecting the bottom of the pressing support from wear, a second linear guide for sliding and lifting the pressing bracket, a limiting and buffering device for limiting and buffering the pressing bracket, and a buffer guide rod and roller for buffering the lifting and lowering of the pressing bracket. The guide rail is vertically mounted on one side of the frame. The top pressure bracket is vertically slidably mounted on one side of the frame via the second linear guide rail. The top pressure base is mounted on the top pressure bracket. The top pressure head is mounted on the top of the top pressure base. The top pressure support is mounted on the bottom of the top pressure bracket. The gasket is mounted on the bottom of the top pressure support. The buffer guide rod is vertically mounted on the bottom of the top pressure bracket and located on one side of the top pressure support. The roller is mounted on the bottom of the buffer guide rod. The limiting buffer device is vertically mounted on one side of the frame and is connected to the top pressure bracket in a transmission manner.

[0009] Specifically, at least two buffer guide rods are provided, and each buffer guide rod is connected to a guide rod connecting rod.

[0010] Preferably, the positioning adjustment and moving component includes a third linear guide rail and a second ball screw that are horizontally mounted on the bottom of the moving base plate. At least two third linear guide rails are provided, and two adjacent third linear guide rails are arranged parallel to each other. The second ball screw is connected to a handwheel and is drivenly connected to the moving base plate.

[0011] Preferably, a controller is provided to control the components such as the pressure drive device, the platform translation drive device, the first sensor, the second sensor, the third sensor, and the limit buffer device. The controller is a PLC programmable logic controller. The PLC programmable logic controller can be a programmable logic controller of model XDS-40T-D, but is not limited to this.

[0012] Compared with existing technologies, the beneficial effects of this utility model are as follows: 1. By setting a bearing mechanism below the top pressing mechanism, the rigidity of the top pressing mechanism is strengthened and the supporting force of the top pressing mechanism is increased, so as to solve the problems of poor electrode sheet production effect, low yield, high maintenance cost of production equipment and production safety hazards caused by the low rigidity and insufficient supporting force of the lower pressing head in the current mechanism for making negative electrode sheets.

[0013] 2. By designing the structure of the pressing mechanism, the buffer guide rod of the pressing mechanism buffers the lifting and lowering movement of the pressing support, and the limiting buffer device provides damping for the lifting and lowering movement of the pressing support to prevent the pressing support from bouncing during the lifting and lowering process. This improves the stability of the pressing head pressing the copper foil and lithium foil stack. At the same time, by designing the structure of the bearing mechanism, and setting the bearing platform of the bearing mechanism as a curved surface structure with one high and one low, the bearing mechanism is used in conjunction with the pressing mechanism. When the roller of the bearing mechanism moves to the higher end of the curved surface of the bearing platform, the pressing head presses the bottom surface of the copper foil and lithium foil stack to cooperate with the upper pressing head to firmly press the copper foil and lithium foil stack together. This makes the copper foil and lithium foil stack into electrode sheets with good effect and high quality after pressing.

[0014] 3. By installing a positioning and adjusting moving component horizontally at the bottom of the moving base plate, the second ball screw drives the moving base plate to reciprocate on the third linear guide when the handwheel is turned to adjust the positioning of the bearing mechanism, the top pressing mechanism, the frame and the upper pressing drive device and the upper pressing head on it. This achieves precise adjustment of the position of the upper pressing head and the top pressing head clamping the copper foil and lithium foil stack, so that the pressing position of the copper foil and lithium foil stack is accurate, ensuring that the copper foil and lithium foil stack is pressed firmly and preventing loosening. Attached Figure Description

[0015] For ease of explanation, the present invention will be described in detail below with reference to the preferred embodiments and accompanying drawings.

[0016] Figure 1 This is a perspective view of a platform lifting device for bearing heavy pressure according to the present invention.

[0017] Figure 2 This is a perspective view of the bearing mechanism of a platform lifting device for bearing heavy pressure according to the present invention.

[0018] Figure 3 This is a perspective view of the top pressure mechanism of a platform lifting device for bearing heavy pressure according to the present invention.

[0019] Figure 4 This is a perspective view of a positioning and adjusting moving component of a platform lifting device for bearing heavy pressure according to the present invention. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0022] Reference Figure 1 As shown, this utility model discloses a platform lifting device for bearing heavy pressure, comprising a movable base plate 1, a frame 2, a positioning and adjusting moving component 3 for positioning and adjusting the movable base plate 1, an upper pressure head 4 for pressing the upper surface of a copper foil and lithium foil laminate, an upper pressure driving device 5 for driving the upper pressure head 4 to press the upper surface of the copper foil and lithium foil laminate, a top pressure mechanism 6 for pressing the lower surface of the copper foil and lithium foil laminate, and a bearing mechanism 7 for driving the top pressure mechanism 6 to press the lower surface of the copper foil and lithium foil laminate. The frame 2 is mounted on the top of the movable base plate 1, the upper pressure driving device 5 is vertically mounted on the top of the frame 2, the upper pressure head 4 is mounted on the output end of the upper pressure driving device 5, the bearing mechanism 7 is mounted on the top of the movable base plate 1 and located on one side of the frame 2, the top pressure mechanism 6 is mounted on one side of the frame 2 and located above the bearing mechanism 7, and the positioning and adjusting moving component 3 is horizontally mounted on the bottom of the movable base plate 1. In this embodiment, the upper pressure drive device 5 is set as an electric cylinder, but it is not a limitation.

[0023] Reference Figure 2As shown, the bearing mechanism 7 includes a bearing platform translation drive device 70, a first ball screw 71, a first linear guide rail 72, and a bearing platform 73. The first linear guide rail 72 is horizontally mounted on the movable base plate 1. The bearing platform 73 is slidably mounted on the movable base plate 1 via the first linear guide rail 72. The first ball screw 71 is horizontally mounted on the movable base plate 1. The bearing platform translation drive device 70 is horizontally mounted on the movable base plate 1 and is connected to the bearing platform 73 via the first ball screw 71. The top of the bearing platform 73 has a curved surface design with one high and one low. Buffers 74 are installed on the movable base plate 1 along the moving direction of the bearing platform 73 and on both sides of the bearing platform 73 to buffer the back-and-forth movement of the bearing platform 73. The above-mentioned structural design of the bearing mechanism 7 can increase the supporting force of the top pressing mechanism 6 and enhance the rigidity of the top pressing mechanism 6, so that the pressing head 4 and the top pressing mechanism 6 have a better pressing effect on the copper foil and lithium foil laminate.

[0024] In this embodiment, the carrier platform translation drive device 70 drives the carrier platform 73 to move back and forth on the first linear guide rail 72 via the first ball screw 71. The pressing mechanism 6 moves back and forth on the curved surface of the carrier platform 73, which has different heights. When the higher end of the curved surface of the carrier platform 73 carries the pressing mechanism 6, the upper pressing head 4 and the pressing mechanism 6 together press the copper foil and lithium foil laminate together. When the lower end of the curved surface of the carrier platform 73 carries the pressing mechanism 6, the upper pressing head 4 and the pressing mechanism 6 release the pressure on the copper foil and lithium foil laminate. The upper pressing head 4 and the pressing mechanism 6 together press the copper foil and lithium foil laminate together. The higher end of the curved surface of the carrier platform 73 carries the pressing mechanism 6 to cooperate with the upper pressing head 4 to press the copper foil and lithium foil laminate together, so that the copper foil and lithium foil laminate is pressed firmly and securely, the effect of pressing the copper foil and lithium foil laminate into an electrode sheet is good, and the quality of the copper foil and lithium foil laminate into an electrode sheet is high. The platform translation drive device 70 is a servo motor, but this is not a limitation.

[0025] Reference Figure 2 As shown, a first sensor 11, a second sensor 12 and a third sensor 13 are provided on one side of the movable base plate 1, and a sensing sheet 75 is provided on one side of the support platform 73 to cooperate with the first sensor, the second sensor 12 and the third sensor 13.

[0026] In this embodiment, the position of the sensing plate 75 sensed by the second sensor 12 is the reference position for the movement of the support platform 73, and the positions of the sensing plate 75 sensed by the first sensor 11 and the third sensor 13 are the positions where the support platform 73 moves back and forth with the maximum stroke, respectively.

[0027] Reference Figure 3As shown, the pressing mechanism 6 includes a pressing head 61 for pressing the lower surface of the copper foil and lithium foil laminate, a pressing base 62 for mounting and fixing the pressing head 61, a pressing bracket 63 for mounting and fixing the pressing base 62, a pressing support column 64 for supporting the pressing bracket 63, a pad 65 for protecting the bottom of the pressing support column 64 from wear, a second linear guide rail 66 for sliding and lifting the pressing bracket 63, a limiting and buffering device 67 for limiting and buffering the pressing bracket 63, a buffer guide rod 68 and a roller 69 for buffering the lifting and lowering of the pressing bracket 63, and the second linear guide rail 66 is vertical. The top pressure bracket 63 is mounted on one side of the frame 2 and can be vertically slidably mounted on one side of the frame 2 via the second linear guide rail 66. The top pressure base 62 is mounted on the top pressure bracket 63, the top pressure head 61 is mounted on the top of the top pressure base 62, the top pressure support column 64 is mounted on the bottom of the top pressure bracket 63, the gasket 65 is mounted on the bottom of the top pressure support column 64, the buffer guide rod 68 is vertically mounted on the bottom of the top pressure bracket 63 and located on one side of the top pressure support column 64, the roller 69 is mounted on the bottom of the buffer guide rod 68, and the limiting buffer device 67 is vertically mounted on one side of the frame 2 and is connected to the top pressure bracket 63 in a transmission manner.

[0028] In this embodiment, the roller 69 travels back and forth on the curved surface of the support platform 73, driving the top pressure bracket 63 to rise and fall on the second linear guide rail 66 via the top pressure support column 64, and simultaneously causing the top pressure head 61 to rise and fall synchronously. The buffer guide rod 68 buffers the rising and falling movement of the top pressure bracket 63, and the limiting buffer device 67 provides damping for the rising and falling movement of the top pressure bracket 63 to prevent the top pressure bracket 63 from bouncing during the rising and falling process, which improves the stability of the top pressure head 61 pressing the copper foil and lithium foil stack. When the roller 69 travels to the higher end of the curved surface of the support platform 73, the top pressure head 61 presses the bottom surface of the copper foil and lithium foil stack to cooperate with the upper pressure head 4 to firmly press the copper foil and lithium foil stack together, so that the electrode sheet made by pressing the copper foil and lithium foil stack together has a good effect and good quality. The limiting buffer device 67 is a cylinder, but it is not a limitation.

[0029] Preferably, the buffer guide rod 68 is configured with a guide rod outer spring structure. The buffer guide rod 68 is vertically installed at the bottom of the top pressure bracket 63 and located on the side of the top pressure column 64 facing the higher side of the curved surface of the bearing platform 73. The gasket 65 is made of P-type steel.

[0030] Reference Figure 3 As shown, there are two or more buffer guide rods 68, and each buffer guide rod 68 is connected to a guide rod connecting rod 60.

[0031] Reference Figure 4As shown, the positioning adjustment and moving assembly 3 includes a third linear guide rail 31 and a second ball screw 32 horizontally mounted on the bottom of the moving base plate 1. At least two third linear guide rails 31 are provided, and adjacent third linear guide rails 31 are arranged parallel to each other. The second ball screw 32 is connected to a handwheel 33 and is connected to the moving base plate 1 in a transmission connection.

[0032] In this embodiment, the forward and reverse rotation of the handwheel 33 drives the movable base plate 1 to reciprocate on the third linear guide rail 31 via the second ball screw 32 to adjust the positioning of the bearing mechanism 7, the pressing mechanism 6, the frame 2 and the pressing drive device 5 and the pressing head 4 on it, thereby achieving precise adjustment of the position of the pressing head 4 and the pressing head 61 clamping the copper foil and lithium foil stack, so as to ensure the accuracy of the pressing position of the copper foil and lithium foil stack, making the negative electrode sheet made therefrom strong, firm and of good quality.

[0033] Reference Figures 1 to 4 As shown, when the platform lifting device for bearing heavy pressure is working, it can adjust the position of the movable base plate 1 and the frame 2 through the positioning and adjusting moving component 3, so as to accurately adjust the pressing position of copper foil and lithium foil. When the copper foil and lithium foil are stacked together (i.e., the copper foil and lithium foil stack) and placed between the upper pressure head 4 and the top pressure mechanism 6, the bearing mechanism 7 lifts the top pressure mechanism 6 to strengthen the rigidity of the top pressure mechanism 6 and increase the supporting force on the copper foil and lithium foil stack. When the upper pressure driving device 5 drives the upper pressure head 4 to descend and press the copper foil and lithium foil stack onto the top pressure mechanism 6, the upper pressure head 4 and the top pressure mechanism 6 together press the copper foil and lithium foil stack together to form the negative electrode sheet of the battery. By designing the structure of the top pressing mechanism 6, the top pressing bracket 63 can move up and down along the second linear guide rail 66 as the roller 69 moves back and forth on the curved surface of the support platform 73, ensuring that the top pressing head 61 and the upper pressing head 4 can firmly press the copper foil and lithium foil laminate together. Furthermore, a support mechanism 7 is provided to support the top pressing mechanism 6, thereby strengthening its rigidity and overall support. This avoids potential safety hazards caused by insufficient support and rigidity of the lower pressing head (i.e., the top pressing head), reducing the maintenance cost of the manufacturing equipment. Electrode sheets produced using this method have a high yield and good quality. It effectively solves the problems of weak bonding of copper foil and lithium foil laminates, poor electrode sheet production effect, low yield, potential safety hazards, and high maintenance costs associated with current assembly line production methods that use low rigidity and insufficient support of the lower pressing head mechanism.

[0034] The above embodiments are merely examples of this utility model and are not intended to limit the implementation and scope of this utility model. All technical solutions that are the same as or equivalent to the contents described in the claims of this utility model should be included within the protection scope of this utility model.

Claims

1. A platform lifting device for carrying heavy loads, characterised in that: The positioning adjustment moving assembly includes a third linear guide rail and a second ball screw rod, the third linear guide rail is transversely arranged on the bottom of the moving base plate, the third linear guide rail is provided with two or more than two, and adjacent two third linear guide rails are arranged in parallel with each other, the second ball screw rod is connected with a hand wheel, and the second ball screw rod is in transmission connection with the moving base plate.

2. A platform lifting device for carrying heavy loads according to claim 1, characterized in that: The moving base plate is provided with a first sensor, a second sensor and a third sensor on one side, and one side of the bearing table is provided with an inductive sheet used in cooperation with the first sensor, the second sensor and the third sensor.

3. A platform lifting device for carrying heavy loads according to claim 2, wherein: The top pressing mechanism includes a top pressing head for pressing the lower surface of the copper foil and lithium foil laminates, a top pressing base for mounting and fixing the top pressing head, a top pressing support for mounting and fixing the top pressing base, a top pressing column for supporting the top pressing support, a gasket for protecting the bottom of the top pressing column from wear, a second linear guide rail for sliding lifting of the top pressing support, a limiting buffer device for limiting and buffering the top pressing support, a buffer guide rod and a roller for buffering the lifting of the top pressing support, the second linear guide rail is vertically arranged on one side surface of the rack, the top pressing support is vertically and slidably arranged on one side surface of the rack through the second linear guide rail, the top pressing base is arranged on the top pressing support, the top pressing head is arranged on the top of the top pressing base, the top pressing column is arranged on the bottom of the top pressing support, the gasket is arranged on the bottom of the top pressing column, the buffer guide rod is vertically arranged on the bottom of the top pressing support and located on one side of the top pressing column, the roller is arranged on the bottom of the buffer guide rod, and the limiting buffer device is vertically arranged on one side surface of the rack and in transmission connection with the top pressing support.

4. The platform lifting device for bearing heavy pressure according to claim 1, characterized in that: The buffer guide rod is provided with two or more than two, and each buffer guide rod is commonly connected with a guide rod connecting rod.

5. A platform lifting device for carrying heavy loads according to claim 4 wherein: The positioning adjustment moving assembly includes a third linear guide rail and a second ball screw rod, the third linear guide rail is transversely arranged on the bottom of the moving base plate, the third linear guide rail is provided with two or more than two, and adjacent two third linear guide rails are arranged in parallel with each other, the second ball screw rod is connected with a hand wheel, and the second ball screw rod is in transmission connection with the moving base plate.

6. The platform lifting device for carrying heavy loads according to claim 1, wherein: ​

Images