A precision positioning fixture for electrode processing

Abstract

This utility model relates to the field of electrode processing technology, and provides a precision positioning fixture for electrode processing, including a positioning fixture body; an electrode body is placed at the center of the top of the positioning fixture body, and end limiting members are provided at both ends of the top of the positioning fixture body; a bidirectional lead screw is provided at the center of the interior of the positioning fixture body; an auxiliary positioning mechanism is provided at the center of one side of the positioning fixture body. This utility model, by providing an auxiliary positioning mechanism, changes the two-point fixing of the electrode body to a three-point constraint with the two ends and the middle, avoiding displacement of the electrode body in the middle due to force, improving positioning accuracy. Simultaneously, after the drive motor starts, the clamping actions at both ends and the pressing action in the middle are performed synchronously, saving the time of step-by-step operation, improving positioning efficiency, and reducing the number of parts in the positioning fixture body, making the positioning fixture body structure more compact and saving production costs.

Description

Technical Field

[0001] This utility model relates to the field of electrode processing technology, and in particular to a precision positioning fixture for electrode processing. Background Technology

[0002] Electrodes are the core components in electrochemical systems (such as batteries, capacitors, fuel cells, electrolyzers, etc.) that enable electron conduction and electrochemical reactions. During electrode processing, positioning fixtures are needed to fix and limit their position to counteract the impact and stress during processing, prevent displacement and deformation, and ensure the flatness and structural integrity of the electrode.

[0003] Common positioning fixtures typically clamp and fix both ends of the electrode, leaving the middle area completely unconstrained. However, for longer electrodes, displacement can easily occur during processing due to external forces, leading to positioning deviations. For example, a graphite electrode processing positioning fixture disclosed in patent number CN217167548U clamps and fixes the graphite block to be processed by placing it in a groove and then bringing two limiting plates and a positioning plate close to each other. Although this positioning fixture improves the positioning accuracy to some extent by positioning the electrode from all sides, the limiting plates and positioning plates need to be adjusted and controlled separately. It is impossible to complete multi-directional clamping with a single action. Especially in batch processing, the cumulative time will significantly increase the production cycle and reduce production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a precision positioning fixture for electrode processing, in order to solve the shortcomings of existing positioning methods that are not precise or fast enough.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a precision positioning fixture for electrode processing, comprising a positioning fixture body; An electrode body is placed at the center of the top of the positioning fixture body, and end limiting parts are provided at both ends of the top of the positioning fixture body. A bidirectional lead screw is provided at the center of the interior of the positioning fixture body. An auxiliary positioning mechanism is provided at the center of one side of the main body of the positioning fixture. The auxiliary positioning mechanism includes a drive gear located at the center of a bidirectional lead screw. A driven gear meshes with the drive gear below it. A first pulley is provided at the bottom of the driven gear via a coupling. A second pulley is provided on one side of the first pulley. The first pulley and the second pulley are connected by a synchronous belt. A one-way lead screw is provided at the top of the second pulley. A lifting sleeve is sleeved on the outside of the one-way lead screw. A clamping arm is connected to the top of the lifting sleeve via a rotating seat. A central limiting member is provided at one end of the bottom of the clamping arm.

[0006] Preferably, a drive motor is fixed at one end of the positioning fixture body, and the output end of the drive motor is connected to a bidirectional lead screw. Both ends of the bidirectional lead screw are fitted with drive blocks, and the top ends of the drive blocks are connected to end limiting members.

[0007] With the above structure, the drive motor can be used to drive the bidirectional lead screw to rotate, which in turn drives the drive block and the end limiter to move closer together, thereby achieving automatic clamping and fixing of both ends of the electrode body.

[0008] Preferably, guide rods are provided on both sides of the bottom of the positioning fixture body, and guide holes matching the guide rods are provided on both sides of the driving block.

[0009] The above structure can provide guidance for the movement of the drive block, preventing the drive block from deviating or shaking during movement.

[0010] Preferably, the positioning fixtures at both ends of the lifting sleeve are equipped with limit rods via brackets, and the two ends of the lifting sleeve are slidably connected to the limit rods via limit sleeves.

[0011] The above structure can limit the movement trajectory of the lifting sleeve and prevent it from rotating as the one-way lead screw rotates.

[0012] Preferably, the positioning fixture body below one end of the clamping arm is provided with two sets of transmission components through a fixing part, and the top ends of the transmission components are rotatably connected to both ends of the clamping arm.

[0013] The above structure can convert the lifting motion of the lifting sleeve into the flipping motion of the pressing arm, thereby enabling the central limiting component to swing towards the electrode body.

[0014] Preferably, a screw passes through the center of one end of the clamping arm, and the bottom end of the screw is connected to the central limiting member.

[0015] With the above structure, the height of the central limiting component can be finely adjusted by rotating the screw to adapt to the central clamping requirements of electrode bodies of different specifications, thereby improving the versatility and positioning accuracy of the tooling.

[0016] Preferably, there is a contact plate below the middle limiting member, and the bottom surface of the middle limiting member is uniformly connected to the contact plate through a buffer member.

[0017] The above structure allows for flexible contact between the central limiting component and the electrode body by utilizing the elastic deformation of the buffer component, thus avoiding damage to the electrode body caused by rigid compression.

[0018] Preferably, the buffer components are all made of rubber, and both ends of the buffer components have cavities. A channel is provided in the center of each buffer component, and a support column is provided inside each channel by a fixing frame.

[0019] Through the above structure, the rubber buffer component combined with the cavity can enhance the buffering effect, and the central support column can prevent the buffer component from being excessively deformed.

[0020] The present invention provides a precision positioning fixture for electrode processing, the advantages of which are: The system comprises a positioning fixture body, an electrode body, a bidirectional lead screw, a drive block, an end limiter, a drive motor, and an auxiliary positioning mechanism. After the electrode body is placed on the positioning fixture body, the drive motor drives the bidirectional lead screw to rotate, causing the drive blocks to move closer together. This causes the end limiters to clamp and fix both ends of the motor body. When the bidirectional lead screw rotates, the driving gear rotates, and the driven gear meshes with the driving gear, rotating together. This causes the first pulley below the driven gear to rotate. The first pulley and the second pulley are connected by a synchronous belt, causing the second pulley to rotate, which in turn causes the unidirectional lead screw to rotate. The lifting sleeve is threadedly engaged with the unidirectional lead screw, allowing the lifting sleeve to... It can move upward along the unidirectional lead screw. The top of the lifting sleeve is connected to the clamping arm through the rotating seat. At the same time, under the action of the transmission components on both sides, the clamping arm is driven to move towards the electrode body. The middle limiting component at the bottom of the clamping arm is used to clamp and fix the center of the electrode body, changing the two-point fixation of the electrode body to a three-point constraint with the two ends and the middle, avoiding displacement of the middle of the electrode body due to force, and improving the positioning accuracy. At the same time, after the drive motor starts, the clamping at both ends and the clamping in the middle are carried out simultaneously, saving the time of step-by-step operation, improving the positioning efficiency, and reducing the number of parts of the positioning fixture body, making the positioning fixture body structure more compact and saving production costs. Furthermore, contact plates are evenly provided at the bottom of the central limiting component through buffer components. When the central limiting component is pressed into the middle position of the electrode body, the contact plates contact the electrode body. The buffer components are all made of rubber. When the lifting sleeve drives the central limiting component to press down, the contact plates are compressed by the pressure and the buffer components are compressed. The elastic characteristics of the rubber itself convert the rigid impact into a flexible and gradual pressure, avoiding excessive pressure that could damage the electrode body. A channel is opened in the center of the buffer component. The inside of the channel is equipped with a support column through a fixed frame. When the buffer component is compressed to a certain extent, the support column will prevent further excessive deformation, thus preserving the buffering capacity and providing stable support and clamping force, preventing the central positioning from loosening due to rubber failure. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional partial bottom view structure of this utility model; Figure 3 This is a three-dimensional structural diagram of the auxiliary positioning mechanism of this utility model; Figure 4This is a three-dimensional structural diagram of the central limiting component of this utility model; Figure 5 This is a three-dimensional cross-sectional structural diagram of the buffer component of this utility model.

[0022] The reference numerals in the figure are as follows: 1. Positioning fixture body; 2. End limiting component; 3. Electrode body; 4. Auxiliary positioning mechanism; 401. Driving gear; 402. Driven gear; 403. First pulley; 404. Second pulley; 405. Synchronous belt; 406. One-way lead screw; 407. Lifting sleeve; 408. Pressing arm; 409. Middle limiting component; 4010. Transmission component; 4011. Limiting rod; 5. Drive motor; 6. Two-way lead screw; 7. Drive block; 8. Guide rod; 9. Screw; 10. Contact plate; 11. Buffer component; 12. Channel; 13. Support column; 14. Cavity. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5 The present invention provides a precision positioning fixture for electrode processing, comprising a positioning fixture body 1; Please see Figures 1-3 An electrode body 3 is placed at the center of the top of the positioning fixture body 1, and end limiting parts 2 are provided at both ends of the top of the positioning fixture body 1. A bidirectional lead screw 6 is provided at the center of the interior of the positioning fixture body 1. A drive motor 5 is fixed at one end of the positioning fixture body 1, and the output end of the drive motor 5 is connected to the bidirectional lead screw 6. A drive block 7 is sleeved at both ends of the bidirectional lead screw 6, and the top of the drive block 7 is connected to the end limiting part 2. Guide rods 8 are provided on both sides of the bottom of the positioning fixture body 1, and guide holes matching the guide rods 8 are opened on both sides of the drive block 7. The electrode body 3 to be positioned is placed stably in the center of the top of the positioning fixture body 1. The drive motor 5 fixed at one end of the positioning fixture body 1 is started. The output end of the drive motor 5 drives the bidirectional lead screw 6 in the center of the positioning fixture body 1 to start rotating. When the bidirectional lead screw 6 rotates, the left and right thread design at both ends of the lead screw drives the two sets of drive blocks 7 sleeved on the lead screw to move closer to each other along the lead screw axis. During this process, the guide rods 8 on both sides of the bottom of the positioning fixture body 1 guide the movement of the drive blocks 7 through the guide holes on both sides of the drive blocks 7 to prevent the drive blocks 7 from shifting. The drive blocks 7 drive the end limiting piece 2 connected at the top to move closer to both ends of the electrode body 3 until the end limiting piece 2 is tightly attached to both ends of the electrode body 3, thus completing the clamping and fixing of both ends of the electrode body 3 and restricting the axial movement and radial displacement of the electrode body 3. An auxiliary positioning mechanism 4 is provided at the center of one side of the positioning fixture body 1. The auxiliary positioning mechanism 4 includes a drive gear 401 located at the center of the bidirectional lead screw 6. A driven gear 402 meshes with the drive gear 401 below it. A first pulley 403 is connected to the bottom of the driven gear 402 via a connecting shaft. A second pulley 404 is provided on one side of the first pulley 403. The first pulley 403 and the second pulley 404 are connected by a synchronous belt 405. A one-way lead screw 406 is provided at the top of the second pulley 404. A lifting sleeve 407 is sleeved on the outside of the one-way lead screw 406. A pressing arm 408 is connected to the top of the lifting sleeve 407 via a rotating seat. A middle limiting member 409 is provided at one end of the bottom of the pressing arm 408. Two sets of transmission members 4010 are provided on the positioning fixture body 1 below one end of the pressing arm 408 via a fixing part. The top of the transmission members 4010 are rotatably connected to both ends of the pressing arm 408. The driving gear 401 fixed in the center of the bidirectional lead screw 6 rotates synchronously with the bidirectional lead screw 6. When the driving gear 401 rotates, the driven gear 402 meshing with it rotates accordingly. The driven gear 402 drives the first pulley 403 at its bottom to rotate synchronously through the coupling shaft. The first pulley 403 transmits power to the second pulley 404 on one side through the synchronous belt 405, so that the second pulley 404 rotates in the same direction, thereby driving the one-way lead screw 406 connected to the top of the second pulley 404 to rotate. When the one-way lead screw 406 rotates, the lifting sleeve 407 sleeved on its outer side moves smoothly upward along the axis of the one-way lead screw 406. The positioning fixture body 1 at both ends of the lifting sleeve 407 is provided with limit rods 4011 through brackets. The two ends of the lifting sleeve 407 are slidably sleeved with the limit rods 4011 through the limit sleeves, which play a guiding and limiting role when the lifting sleeve 407 moves. The clamping arm 408, connected to the top of the lifting sleeve 407 via a rotating seat, rises with the lifting sleeve 407. Simultaneously, under the traction of two sets of transmission components 4010, the clamping arm 408 flips towards the electrode body 3, causing the middle limiting component 409 at one end of its bottom to gradually approach the center position of the electrode body 3, thus clamping and fixing the center position of the electrode body 3. This changes the two-point fixation of the electrode body 3 to a three-point constraint with both ends and the middle, preventing displacement of the middle of the electrode body 3 due to force and improving positioning accuracy. At the same time, after the drive motor 5 starts, the clamping at both ends and the middle clamping action are performed simultaneously, saving the time of step-by-step operation and improving positioning efficiency. Please see Figures 3-4 A screw 9 passes through the center of one end of the clamping arm 408, and the bottom end of the screw 9 is connected to the middle limiting member 409. There is a contact plate 10 below the middle limiting member 409, and the bottom surface of the middle limiting member 409 is evenly connected to the contact plate 10 through buffer members 11. The buffer members 11 are all made of rubber, and cavities 14 are opened at both ends inside the buffer members 11. A channel 12 is opened at the center of the buffer members 11, and a support column 13 is set inside the channel 12 through a fixing frame. If it is necessary to adjust the clamping position or force of the middle limiting member 409, the screw 9 passing through the center of one end of the clamping arm 408 can be rotated. The screw 9 drives the middle limiting member 409 connected to the bottom end to make slight up and down adjustments. As the clamping arm 408 rotates, the contact plate 10 at the bottom of the middle limiting member 409 first contacts the surface of the center position of the electrode body 3. After the contact plate 10 contacts the electrode body 3, the middle limiting member 409 continues to press down. The contact plate 10 squeezes the rubber buffer member 11 evenly arranged on the bottom surface of the middle limiting member 409. The buffer member 11 absorbs the rigid impact during the pressing process through its own elastic deformation, and converts the pressure into a flexible gradual pressure. At the same time, the cavities 14 opened at both ends inside the buffer member 11 can enhance the buffering effect and prevent excessive pressure from damaging the surface of the electrode body 3. When the buffer 11 is compressed to a certain extent, the support column 13 set by the fixing frame in the central channel 12 inside it contacts the inner wall of the contact plate 10 or the middle limiting member 409, preventing the buffer 11 from deforming excessively. This not only preserves the buffering capacity but also provides stable support for the middle limiting member 409, ensuring that the middle limiting member 409 reliably presses the center position of the electrode body 3. Finally, the three-point positioning of clamping at both ends and pressing in the middle of the electrode body 3 is completed, ensuring positioning accuracy and stability.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A precision positioning fixture for electrode processing, comprising a positioning fixture body (1); Its features are: An electrode body (3) is placed at the center of the top of the positioning fixture body (1), and end limiting parts (2) are provided at both ends of the top of the positioning fixture body (1). A bidirectional lead screw (6) is provided at the center of the interior of the positioning fixture body (1). An auxiliary positioning mechanism (4) is provided at the center of one side of the positioning fixture body (1). The auxiliary positioning mechanism (4) includes a drive gear (401) located at the center of the bidirectional lead screw (6). A driven gear (402) meshes with the drive gear (401) below. A first pulley (403) is provided at the bottom of the driven gear (402) via a connecting shaft. A second pulley (404) is provided on one side of the first pulley (403). The first pulley (403) and the second pulley (404) are connected by a synchronous belt (405). A one-way lead screw (406) is provided at the top of the second pulley (404). A lifting sleeve (407) is sleeved on the outside of the one-way lead screw (406). A pressing arm (408) is connected to the top of the lifting sleeve (407) via a rotating seat. A middle limiting member (409) is provided at one end of the bottom of the pressing arm (408).

2. The precision positioning fixture for electrode processing according to claim 1, characterized in that: One end of the positioning fixture body (1) is fixed with a drive motor (5), and the output end of the drive motor (5) is connected to a bidirectional lead screw (6). Both ends of the bidirectional lead screw (6) are fitted with drive blocks (7), and the top of the drive blocks (7) is connected to the end limiters (2).

3. The precision positioning fixture for electrode processing according to claim 2, characterized in that: The positioning fixture body (1) has guide rods (8) on both sides of its bottom, and the driving block (7) has guide holes on both sides that match the guide rods (8).

4. The precision positioning fixture for electrode processing according to claim 1, characterized in that: The positioning fixture body (1) at both ends of the lifting sleeve (407) is provided with a limit rod (4011) by means of a bracket. The two ends of the lifting sleeve (407) are respectively slidably connected to the limit rod (4011) by the limit sleeve.

5. The precision positioning fixture for electrode processing according to claim 1, characterized in that: Two sets of transmission components (4010) are provided on the positioning fixture body (1) below one end of the clamping arm (408) through a fixing part, and the top end of the transmission component (4010) is rotatably connected to both ends of the clamping arm (408).

6. The precision positioning fixture for electrode processing according to claim 1, characterized in that: A screw (9) passes through the center of one end of the clamping arm (408), and the bottom end of the screw (9) is connected to the middle limiting member (409).

7. The precision positioning fixture for electrode processing according to claim 1, characterized in that: The middle limiting member (409) has a contact plate (10) below it, and the bottom surface of the middle limiting member (409) is uniformly connected to the contact plate (10) through the buffer member (11).

8. The precision positioning fixture for electrode processing according to claim 7, characterized in that: The buffer components (11) are all made of rubber, and the buffer components (11) have cavities (14) at both ends. The buffer components (11) have channels (12) at the center. The channels (12) are all equipped with support columns (13) by fixing frames.

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