A shaping fixture for lithium battery production

Abstract

This utility model provides a shaping fixture for lithium battery production, comprising: a worktable, a movable block slidably connected to the upper end of the worktable, and a placement plate threadedly installed at the bottom of the worktable. This shaping fixture for lithium battery production, through the arrangement of a screw, guide rod, arc-shaped groove, auxiliary groove, and rollers, etc., uses a screw that works with a motor to precisely convert rotational motion into linear motion, driving the pressure plate to apply pressure and move the battery. The guide rod provides stable guidance for the movement of the movable block, ensuring the stability and accuracy of the shaping process. The arc-shaped groove adapts to the shape of the battery, providing a stable placement position and assisting the battery in rolling during shaping. A buffer pad covers the surface of the battery, dispersing pressure and preventing damage. The auxiliary groove and internal rollers reduce placement resistance when the battery is loaded and help the battery roll smoothly during the shaping stage, ensuring uniform force on the battery surface, reducing damage, and improving the shaping effect and product yield.

Description

Technical Field

[0001] This utility model relates to the field of battery processing technology, and more specifically, to a shaping tooling for lithium battery production. Background Technology

[0002] Batteries are generally soft-pack cylindrical batteries encapsulated with aluminum-plastic film. To make the batteries have a suitable cylindrical casing, lithium battery shaping fixtures are needed to shape the batteries.

[0003] However, existing lithium battery shaping fixtures have the following problems when in use:

[0004] Existing lithium battery shaping fixtures require repeated adjustments to the battery's position to make it a cylindrical shape that fits the casing. However, during these repeated adjustments, the battery is prone to deformation and requires a significant amount of time. Furthermore, the shaping process typically uses straight groove rolling, which has poor fit between the straight groove and the cylindrical battery. As a result, the battery struggles to maintain a stable rolling trajectory, leading to deviations and wobbling. This results in uneven force distribution on the battery surface, with some areas potentially being damaged due to excessive force, while others fail to achieve adequate shaping, significantly impacting the shaping effect.

[0005] This invention enables precise transmission and guidance through screws and guide rods, ensures battery stability and safety through arc-shaped grooves and buffer pads, and assists in battery placement and rolling through auxiliary grooves and rollers. The coordinated structure effectively smooths out battery bulges and uneven areas, improving battery shaping quality and production efficiency. Summary of the Invention

[0006] The present invention aims to solve the technical problems mentioned in the background art and provide a shaping tooling for lithium battery production.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a shaping fixture for lithium battery production, comprising: a worktable, a movable block slidably connected to the upper end of the worktable, a placement plate threadedly installed inside the bottom of the worktable, a screw rotatably connected to the upper end of the worktable, the screw being threadedly connected to the movable block, a pressure plate fixedly installed at the bottom of the movable block, the bottom of the pressure plate being made of an elastic material, an arc-shaped groove being formed inside the bottom of the placement plate, and buffer pads fixedly installed on both the surface of the arc-shaped groove and the inner side of the placement plate, the buffer pads being made of rubber or silicone.

[0008] A further preferred embodiment: a movable groove is provided at the upper end of the worktable, a guide rod is fixedly installed in the movable groove, the guide rod is located behind the screw, and the guide rod is slidably connected to the movable block.

[0009] A further preferred embodiment: A motor is fixedly installed on the upper left side of the workbench, and the output end of the motor is fixedly connected to the screw.

[0010] A further preferred embodiment: a sliding hole is provided at the left end of the moving block, and a screw hole is provided at the front side of the sliding hole. The sliding hole is slidably connected to the guide rod, and the screw hole is threadedly connected to the screw rod.

[0011] A further preferred embodiment: a cylinder is fixedly installed at the bottom of the movable block, and the output end of the cylinder is fixedly connected to the pressure plate.

[0012] A further preferred embodiment: the placement plate is fixedly installed with fixed ends at both the left and right ends, and bolts are threadedly connected to the upper end of each fixed end. The placement plate is fixedly installed in the workbench by bolts.

[0013] A further preferred embodiment: the placement plate has auxiliary grooves at both the front and rear ends, and several rollers are rotatably installed in each of the auxiliary grooves. Beneficial effects

[0014] 1. By incorporating a screw and a guide rod, with the screw threadedly connected to the moving block and the motor driving the screw to rotate, the rotational motion can be precisely converted into linear movement of the moving block. This, in turn, drives the pressure plate to perform a shaping operation on the battery, ensuring stable and precise power transmission for the shaping action. The guide rod is installed in the moving slot and slidably connected to the moving block, providing reliable guidance for the movement of the moving block. It effectively limits the movement trajectory of the moving block, ensuring that it can only move smoothly along a predetermined straight line, avoiding deviation or shaking caused by external interference. This greatly improves the accuracy and stability of the moving block driving the pressure plate. This structure, where the screw and guide rod work together, not only improves the overall stability of the shaping fixture but also ensures the accuracy of the battery shaping operation, helping to improve the quality and efficiency of battery shaping, reduce the defect rate, and ultimately improve product quality.

[0015] 2. By incorporating an arc-shaped groove and buffer pads, the arc-shaped groove perfectly matches the outline of the cylindrical battery. When the battery is placed within it, it ensures stable positioning and maintains good positional accuracy throughout the shaping process, providing a reliable foundation for subsequent uniform pressure application. Moreover, this close-fitting design makes the battery movement smoother and more stable during rolling shaping, avoiding deviation or jamming, thus achieving a more uniform shaping effect. The buffer pads are fixed to the surface of the arc-shaped groove and the inner side of the placement plate, respectively. They are mostly made of rubber or silicone pads, which have good elasticity and cushioning performance. When the pressure plate applies pressure to the battery, the buffer pads can effectively disperse the pressure, preventing damage to the battery surface due to excessive local pressure. At the same time, it reduces hard friction between the battery and the tooling, protecting the insulation layer and appearance of the battery surface. During the battery rolling process, the buffer pads continuously provide stable support, further ensuring the smooth rolling of the battery and helping to improve the shaping quality.

[0016] 3. By setting up auxiliary grooves and rollers, the auxiliary grooves are opened at the front and rear ends inside the placement plate, and rollers are rotatably installed in the grooves. When the battery is placed manually, the two ends of the battery first contact the rollers. The rollers, by virtue of their own rotation characteristics, transform the sliding friction between the battery and the placement plate into rolling friction, which greatly reduces the placement resistance and allows the battery to slide into the arc-shaped groove more smoothly and easily. This effectively improves the battery loading efficiency and reduces the labor intensity of the operators. During the battery rolling and shaping stage, the advantages of the auxiliary grooves and rollers are even more prominent. When the pressure plate drives the battery to roll in the arc-shaped groove, the two ends of the battery are in close contact with the surface of the rollers and drive them to rotate. The rollers continuously provide additional assistance for the battery rolling, further reducing the rolling resistance and ensuring that the battery can roll smoothly and evenly. This ensures that all parts of the battery surface are evenly stressed, which not only helps to improve the shaping effect and makes the uneven or bulging parts of the battery surface more evenly squeezed back to their original shape, but also reduces the risk of damage to the battery caused by uneven stress, thereby improving the product shaping quality and yield.

[0017] 4. In summary, this type of lithium battery forming fixture, through the arrangement of a screw, guide rod, arc groove, auxiliary groove, and rollers, etc., uses a screw and motor to precisely convert rotational motion into linear motion, driving the pressure plate to apply pressure and move the battery. The guide rod provides stable guidance for the movement of the moving block, ensuring the accurate trajectory of the pressure plate and guaranteeing the stability and precision of the forming process. The arc groove is adapted to the shape of the battery, providing a stable placement position for the battery and assisting in the rolling of the battery during forming. The buffer pad covers the surface of the battery, dispersing pressure and preventing battery damage. The auxiliary groove and internal rollers reduce placement resistance and improve feeding efficiency when the battery is loaded. During the forming stage, they help the battery roll smoothly, so that the battery surface is evenly stressed, reducing damage and improving the forming effect and product yield. These structures work together to significantly improve the forming quality and production efficiency of lithium batteries. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the movable block structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the shaping groove structure of this utility model.

[0021] Figure 1-3In the middle: 1. Workbench; 101. Moving groove; 102. Motor; 103. Guide rod; 104. Screw; 2. Moving block; 201. Sliding hole; 202. Screw hole; 203. Cylinder; 204. Pressure plate; 3. Placement plate; 301. Fixed end; 302. Bolt; 303. Arc groove; 304. Auxiliary groove; 305. Roller; 306. Buffer pad. Detailed Implementation

[0022] The following will refer to the appendix in the embodiments of this utility model. Figures 1-3 The technical solutions in the embodiments of this utility model will be clearly and completely described.

[0023] Please see Figure 1-3In this embodiment of the present invention, a shaping fixture for lithium battery production includes: a workbench 1, a movable block 2 slidably connected to the upper end of the workbench 1, a placement plate 3 threadedly installed at the bottom of the workbench 1, a screw 104 rotatably connected to the upper end of the workbench 1, the screw 104 being threadedly connected to the movable block 2, a pressure plate 204 fixedly installed at the bottom of the movable block 2, the bottom of the pressure plate 204 being made of an elastic material, an arc-shaped groove 303 being formed at the bottom of the placement plate 3, and buffer pads 306 fixedly installed on both the surface of the arc-shaped groove 303 and the inner side of the placement plate 3, the buffer pads 306 being made of rubber or silicone pads, and a motor 102 fixedly installed above the left end of the workbench 1, the output end of the motor 102 being connected to the screw 104. A cylinder 203 is fixedly installed at the bottom of the movable block 2. The output end of the cylinder 203 is fixedly connected to the pressure plate 204. Fixed ends 301 are fixedly installed at both ends of the placement plate 3. Bolts 302 are threadedly connected to the upper end of each fixed end 301. The placement plate 3 is fixedly installed in the workbench 1 by bolts 302. First, the lithium battery to be shaped is picked up manually and carefully placed in the arc groove 303 of the placement plate 3. Then, the motor 102 is operated to rotate forward, driving the screw 104 to rotate, which moves the movable block 2 left and right to above the placement plate 3. At this time, the pressure plate 204 is positioned above the battery as the movable block 2 moves. Then, the drive of the motor 102 is stopped, and the cylinder 203 is started. Its piston rod The pressure plate 204 is slowly extended, pushing it further downward to apply the necessary pressure for battery shaping. Since the bottom of the pressure plate 204 is made of elastic material, it can better conform to the top of the battery. Simultaneously, combined with the buffer pad 306 within the arc-shaped groove 303, the battery is evenly stressed vertically, initiating the battery shaping process. At this point, the pressure plate 204 is in initial contact with the top of the battery, but significant pressure has not yet been applied. Based on the battery specifications and shaping requirements, the output pressure of the cylinder 203 is set through the control system. The motor 102 is then restarted, driving the screw 104 to rotate, which in turn moves the moving block 2 left and right, allowing the pressure plate 204 to roll the battery within the arc-shaped groove 303. Starting from the first shaping surface, the battery gradually rolls to the second shaping surface. Then, the drive motor 102 reverses and repeats this operation, so that the entire battery is repeatedly rolled and shaped within the arc groove 303. Uneven or bulging parts of the battery surface are gradually squeezed back to their original shape. When the predetermined shaping time is reached or the battery is observed to have achieved the desired shaping effect, the piston rod of the cylinder 203 retracts, driving the pressure plate 204 to rise. The motor 102 is restarted, and the screw 104 rotates, causing the moving block 2 to move the pressure plate 204 to the initial position. The shaped lithium battery is carefully removed from the arc groove 303 of the placement plate 3 by hand, completing one shaping operation. Then, the next round of battery shaping work can begin.

[0024] In this embodiment of the utility model, a movable groove 101 is provided at the upper end of the workbench 1. A guide rod 103 is fixedly installed in the movable groove 101. The guide rod 103 is located behind the screw 104 and is slidably connected to the movable block 2. A sliding hole 201 is provided at the left end of the movable block 2, and a screw hole 202 is provided at the front side of the sliding hole 201. The sliding hole 201 is slidably connected to the guide rod 103, and the screw hole 202 is threadedly connected to the screw 104. When the motor 102 runs, it drives the screw 104 to rotate. Because the screw hole 202 is threadedly connected to the screw 104, the movable block 2 will move along the axial direction of the screw 104 under the action of the threaded transmission. During the process, the sliding hole 201 and the guide rod 103 maintain a sliding connection, so that the movement trajectory of the moving block 2 is constrained by the guide rod 103 and can only move in the direction defined by the guide rod 103, that is, move left and right. This ensures the accuracy of the movement direction of the moving block 2. At the same time, the guide rod 103 plays a guiding role, preventing the moving block 2 from deviating or shaking due to interference from other external forces during the movement, and ensuring that the moving block 2 moves smoothly in the predetermined straight line direction. Through this structural design, the rotational motion of the motor is accurately converted into the linear motion of the moving block 2, thereby driving the pressure plate 204 connected to it to perform a shaping operation on the battery.

[0025] In this embodiment of the utility model, auxiliary grooves 304 are provided at both the front and rear ends of the placement plate 3. Several rollers 305 are rotatably installed in the auxiliary grooves 304. When the pressure plate 204 drives the battery to roll in the arc groove 303 for shaping, the two ends of the battery are movably connected to the surface of the rollers 305 in the auxiliary groove 304. The rollers 305 provide assistance for the rolling of the battery, further reducing the resistance when the battery rolls, so that the battery can roll more smoothly and evenly. This helps to make the surface of the battery evenly stressed during the shaping process and improve the shaping effect.

[0026] Working principle: The lithium battery to be shaped is carefully picked up manually, keeping it horizontal. The two ends of the battery are slowly aligned with the auxiliary groove 304 of the placement plate 3. When the two ends of the battery contact the rollers 305 inside the auxiliary groove 304, the rollers 305 begin to rotate due to the weight of the battery, guiding the battery smoothly into the arc-shaped groove 303 at the bottom of the placement plate 3. The motor 102 is then rotated forward, and its output drives the screw 104 to rotate. Because the screw hole 202 at the left end of the moving block 2 is threadedly connected to the screw 104, the moving block 2 begins to move along the axial direction of the screw 104 under the action of the threaded transmission. Simultaneously, the sliding hole 201 at the left end of the moving block 2 maintains a sliding connection with the guide rod 103, which constrains and guides the movement trajectory of the moving block 2. The guide rod 103 is used to ensure that the moving block 2 can only move smoothly left and right in the direction defined by the guide rod 103 until the moving block 2 moves the pressure plate 204 above the placement plate 3. At this time, the pressure plate 204 is directly above the battery. The drive of the motor 102 is stopped, and the cylinder 203 is started. The piston rod of the cylinder 203 slowly extends, pushing the pressure plate 204 downward. Since the bottom of the pressure plate 204 is made of elastic material, when the bottom of the pressure plate 204 initially contacts the top of the battery, the elastic material can automatically conform to the shape of the top of the battery and begin to apply a certain pressure to the battery. At this time, the pressure plate 204 is in contact with the top of the battery, but no large pressure has been applied yet. The main purpose is to make the pressure plate 204 initially conform to the top of the battery, in preparation for the subsequent precise application of shaping pressure, according to the specifications of the battery and For specific shaping needs, the output pressure of cylinder 203 is set by the control system to ensure that the pressure setting value can effectively squeeze and shape uneven or bulging parts of the battery surface without damaging the battery due to excessive pressure. Motor 102 is restarted, driving screw 104 to rotate, which in turn moves moving block 2 left and right. At this time, pressure plate 204, driven by moving block 2, pushes the battery to start rolling in arc groove 303. During rolling, both ends of the battery are movably connected to the surface of rollers 305 in auxiliary groove 304. Rollers 305 continuously provide assistance for the battery's rolling, further reducing the resistance during rolling and allowing the battery to roll more smoothly and steadily. As the battery rolls, the initial shaping process begins. As the battery gradually rolls to the second shaping surface, all parts of the battery surface are evenly stressed under the combined action of the elastic material at the bottom of the pressure plate 204 and the buffer pad 306 in the arc groove 303. The drive motor 102 reverses, causing the moving block 2 to move the pressure plate 204 in the opposite direction. The battery rolls in the opposite direction in the arc groove 303, repeating the above rolling shaping process. By continuously adjusting the forward and reverse rotation of the motor 102 and the pressure output of the cylinder 203, the entire battery undergoes thorough and repeated rolling shaping in the arc groove 303, gradually squeezing the uneven or bulging parts of the battery surface back to their original shape. During the shaping process, the operator closely observes the shaping status of the battery. When the predetermined shaping time is reached, or when the operator observes that the battery has achieved the ideal shaping effect, the battery is shaped.The piston rod of the control cylinder 203 retracts, causing the pressure plate 204 to slowly rise until it is completely off the top of the battery. Then, the motor 102 is restarted, causing the screw 104 to rotate, which in turn moves the moving block 2 and the pressure plate 204 back to its initial position. The shaped lithium battery is then carefully removed manually from the arc-shaped groove 303 of the placement plate 3, completing one shaping operation. After removing the battery, the tooling is cleaned to remove any remaining debris or other contaminants, preparing for the next round of battery shaping.

Claims

1. A shaping fixture for lithium battery production, comprising: A workbench (1) is provided with a sliding block (2) at the upper end of the workbench (1) and a placement plate (3) is threadedly installed at the bottom of the workbench (1). The workbench (1) is characterized in that: a screw (104) is rotatably connected to the upper end of the workbench (1), the screw (104) is threadedly connected to the sliding block (2), a pressure plate (204) is fixedly installed at the bottom of the sliding block (2), the bottom of the pressure plate (204) is made of elastic material, and an arc groove (303) is provided at the bottom of the placement plate (3). A buffer pad (306) is fixedly installed on the surface of the arc groove (303) and the inner side of the placement plate (3), and the buffer pad (306) is made of rubber pad or silicone pad.

2. The shaping fixture for lithium battery production according to claim 1, characterized in that: The workbench (1) has a moving groove (101) at its upper end. A guide rod (103) is fixedly installed in the moving groove (101). The guide rod (103) is located behind the screw (104). The guide rod (103) is slidably connected to the moving block (2).

3. The shaping fixture for lithium battery production according to claim 2, characterized in that: A motor (102) is fixedly installed on the upper left side of the workbench (1), and the output end of the motor (102) is fixedly connected to the screw (104).

4. The shaping fixture for lithium battery production according to claim 2, characterized in that: The moving block (2) has a sliding hole (201) on its left end, and a screw hole (202) is provided on the front side of the sliding hole (201). The sliding hole (201) is slidably connected to the guide rod (103), and the screw hole (202) is threadedly connected to the screw rod (104).

5. A shaping fixture for lithium battery production according to claim 1, characterized in that: A cylinder (203) is fixedly installed at the bottom of the moving block (2), and the output end of the cylinder (203) is fixedly connected to the pressure plate (204).

6. A shaping fixture for lithium battery production according to claim 1, characterized in that: The placement plate (3) is fixedly installed with fixed ends (301) at both the left and right ends. The upper end of each fixed end (301) is threaded with bolts (302). The placement plate (3) is fixedly installed in the workbench (1) by bolts (302).

7. A shaping fixture for lithium battery production according to claim 6, characterized in that: The placement plate (3) has auxiliary grooves (304) at both the front and rear ends, and several rollers (305) are rotatably installed in each of the auxiliary grooves (304).

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