A rapid forming and positioning device for a lightweight battery box of a polyphenylene sulfide composite material

Abstract

This invention discloses a rapid prototyping and positioning device for lightweight battery cases made of polyphenylene sulfide (PPS) composite materials, belonging to the field of battery case manufacturing technology. The device includes a molding machine with a worktable and a hydraulic plate. A case component is slidably mounted on the side wall of the hydraulic plate facing the worktable. A molding cavity adapted to the shape of the case component is mounted on the top of the worktable. The positioning box contains a secondary positioning pin, a drive threaded rod, and a correction mechanism for correcting the secondary positioning pin. This invention, through the graded positioning and cooperation of the primary and secondary positioning pins, allows PPS composite case components with slight warping, hole misalignment, or local deformation to first complete the reference import, and then, under the combined action of the secondary positioning pin and the correction mechanism, perform flexible correction and precise positioning, thereby balancing rapid clamping, positioning stability, and molding accuracy.

Description

Technical Field

[0001] This invention belongs to the field of battery box manufacturing technology, specifically relating to a rapid prototyping and positioning device for lightweight battery boxes made of polyphenylene sulfide composite material. Background Technology

[0002] The battery casing is a crucial structural component of the power battery system in new energy vehicles. It primarily supports battery modules, electrical connections, and thermal management components, while also providing protection, sealing, and structural support. With the increasing demand for lightweight designs in new energy vehicles, traditional metal battery casings, due to their large size, high molding energy consumption, and limited structural integration, are gradually becoming insufficient to meet the development requirements of high-performance battery systems.

[0003] Polyphenylene sulfide (PPS) composites exhibit a series of excellent properties due to their unique chemical structure and performance characteristics. For example, they possess excellent heat resistance, maintaining stable physical and chemical properties even at high temperatures. Simultaneously, they exhibit superior flame retardant properties, effectively slowing flame spread in extreme conditions such as fires, thereby enhancing safety. Furthermore, PPS composites demonstrate good dimensional stability; their shape and dimensions remain largely unchanged despite temperature or humidity fluctuations, laying a solid foundation for their application in precision components. Given these superior properties, PPS composites are increasingly becoming an ideal choice for lightweight battery casing fabrication.

[0004] Polyphenylene sulfide (PPS) composite battery cases, especially glass fiber reinforced battery cases, often experience varying degrees of warping, hole misalignment, flatness deviations, and localized contour distortion after injection molding due to factors such as uneven material shrinkage, differences in glass fiber orientation, inconsistent cooling rates, and the large size and complex wall thickness distribution of the parts themselves. Current technologies typically employ a multi-point rigid positioning method, consisting of fixed reference blocks, rigid locating pins, limiting side blocks, and clamping mechanisms, for assembling, inspecting, or machining positioning of such cases. While this method achieves good positioning accuracy for ideal rigid parts, it lacks a phased constraint and adaptive clearance mechanism for PPS cases with molding deviations and localized deformations. Therefore, when dealing with PPS cases that actually have form and position errors, it remains difficult to simultaneously ensure clamping smoothness, positioning stability, and final accuracy. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a rapid prototyping and positioning device for lightweight battery box made of polyphenylene sulfide composite material.

[0006] The technical solution adopted to solve the above technical problems is: A rapid prototyping and positioning device for lightweight battery housing made of polyphenylene sulfide composite material includes a molding machine. The molding machine is equipped with a worktable and a hydraulic plate. The hydraulic plate is located above the worktable. A housing component is slidably mounted on the side wall of the hydraulic plate facing the worktable. A molding cavity is installed on the top of the worktable. The molding cavity has a concave design. The housing component is located directly above the molding cavity. The shape of the molding cavity is consistent with the shape of the housing component. A main positioning pin is fixedly provided at the bottom of the molding cavity, a main positioning hole is provided at the corresponding position of the box component, a secondary positioning hole is provided on the side wall of the box component, a positioning box is installed on the side wall of the molding cavity, a through hole is provided on the inner wall of the molding cavity, a floating seat is provided in the positioning box, a secondary positioning pin is provided in the floating seat, and the secondary positioning pin passes through the through hole and is inserted into the secondary positioning hole. The positioning box is equipped with a servo motor, and a drive threaded rod is fixedly installed at the output end of the servo motor. The positioning box is also equipped with two supports. A smooth section is opened at the end of the drive threaded rod away from the servo motor. The drive threaded rod and the smooth section pass through the two supports respectively. A moving block is threadedly connected to the drive threaded rod. The floating seat is fixedly installed on the top of the moving block. A correction mechanism for the correction pin is installed at the end of the drive threaded rod away from the servo motor.

[0007] The above technical solution utilizes the main locating pin to initially define the reference for the housing component, while the secondary locating pin, driven by the floating seat, completes auxiliary positioning. After the drive threaded rod moves the moving block to the smooth section, the secondary locating pin is then finely adjusted laterally by the correction mechanism. This allows the secondary locating pin to flexibly correct the housing component with slight deformation within the secondary locating hole, thereby ensuring the positioning accuracy and clamping stability of the polyphenylene sulfide composite housing component in rapid prototyping, testing, or assembly stations.

[0008] Furthermore, a connector is fixedly provided on the top of the housing component, a sliding plate is provided on the top of the connector, and a groove is provided on the side wall of the hydraulic plate, with the sliding plate slidably connected to the inner wall of the groove.

[0009] By utilizing the above technical solution and the cooperation between the connector, the slide plate and the slide groove, the housing component can be quickly installed on the hydraulic plate in a pull-out manner. This facilitates the replacement of housing components or molding components of different specifications, and also ensures that the housing component maintains a stable posture when pressed down by the hydraulic plate, reducing the adverse effects of lateral swaying on positioning accuracy.

[0010] Furthermore, a slide rail is fixedly installed at the bottom of the positioning box, and the moving block is slidably connected to the slide rail.

[0011] Through the above technical solution, the slide rail can linearly guide the movement trajectory of the moving block, preventing the moving block from swaying, tilting or jamming under the drive threaded rod, thereby ensuring the stability of the floating seat and the secondary positioning pin during the forward movement and improving the reliability of the secondary positioning pin when it is inserted into the secondary positioning hole.

[0012] Furthermore, the secondary positioning hole is designed with a flared opening, and the secondary positioning hole and the main positioning hole are located on different planes of the housing component.

[0013] With the above technical solution, the secondary positioning hole adopts a flared structure, which can provide a larger tolerance space when the secondary positioning pin is introduced. Setting the secondary positioning hole and the main positioning hole on different planes is conducive to forming a hierarchical positioning method of first the main and then the secondary. This allows the device to successfully complete the positioning and introduction process when dealing with polyphenylene sulfide composite material box parts with slight warping and hole position deviation.

[0014] Furthermore, the end of the secondary positioning pin is spherical, and the diameter of the through hole is larger than the outer diameter of the secondary positioning pin.

[0015] Through the above technical solution, a floating fit structure is formed between the secondary positioning pin at the spherical end and the through hole with a larger diameter, so that the secondary positioning pin can be adjusted in angle and compensated in position within a certain range during insertion, thereby reducing the jamming, scratching or forced interference caused by rigid top pressure and enhancing the adaptability of the device to deformable box parts.

[0016] Furthermore, the correction mechanism includes a driving bevel gear, a driven bevel gear, a crossbar, two transverse threaded rods, two transverse moving blocks, two support rods, and two corrective blocks. The driving bevel gear is fixedly connected to the smooth section. A retainer is fixedly provided on the side wall of the support. Both the driving bevel gear and the driven bevel gear are rotatably mounted in the retainer. The driving bevel gear meshes with the driven bevel gear. The crossbar is fixedly mounted on the side wall of the driven bevel gear. The two transverse threaded rods are fixedly connected to both ends of the crossbar. The two transverse moving blocks are threadedly connected to the two transverse threaded rods. The two support rods are fixedly connected to the side walls of the two transverse moving blocks. A motion groove is provided on the top of the support. Displacement blocks are slidably connected to both ends of the motion groove. The two corrective blocks are fixed on the top of the two displacement blocks. The two corrective blocks have a semi-circular design facing each other at one end. The secondary positioning pin is located at the center of the semi-circle.

[0017] Through the above technical solution, when the drive threaded rod continues to rotate while the moving block stops moving forward, the drive bevel gear set on the smooth section will drive the driven bevel gear to rotate, and further drive the transverse threaded rod to work, causing the two straightening blocks to gradually move closer to the secondary locating pin. Since the end of the straightening block facing the secondary locating pin is designed as a semi-circle, it can guide the secondary locating pin laterally in a relatively gentle manner during the extrusion process, thereby correcting the local hole position offset and posture deviation of the housing part.

[0018] Furthermore, a telescopic rod is fixedly installed between the moving block and the support away from the servo motor. A pad is fixedly installed at both ends of the telescopic rod. One of the pads abuts against the side wall of the moving block, and the other pad abuts against the side wall of the support. A telescopic spring is wound around the telescopic rod.

[0019] Through the above technical solution, the telescopic rod and telescopic spring can provide buffering and elastic pre-tightening when the moving block is close to the end of its stroke. On the one hand, this reduces the rigid collision between the moving block and the support, and on the other hand, it ensures that the secondary positioning pin maintains a moderate clamping force after being inserted into the secondary positioning hole, providing a stable force basis for the subsequent correction mechanism to implement correction.

[0020] Furthermore, a baffle is fixedly provided at the end of the transverse threaded rod away from the crossbar, and the outer diameter of the baffle is larger than the outer diameter of the transverse threaded rod.

[0021] Through the above technical solution, the baffle can limit the movement range of the transverse block, preventing the transverse block from coming off the transverse threaded rod during repeated movement, thereby ensuring the stability and safety of the correction mechanism in long-term cyclic operation.

[0022] Furthermore, a first locking rod is fixedly provided on each of the two side walls of the moving block. A first locking groove is opened on the side wall of the first locking rod. A second locking rod is rotatably provided on the side wall of the support through a first torsion spring. A second locking groove is opened on the side of the second locking rod away from the first locking groove. The positions of the first locking rod and the second locking rod correspond to each other, and the opposite ends of the first locking rod and the second locking rod are both arc-shaped. The side walls of the first locking groove and the side walls of the second locking groove are both magnetic.

[0023] With the above technical solution, when the moving block moves to the predetermined position, the first and second locking rods can automatically contact and engage under the arc-shaped guide action, and at the same time remain locked under the magnetic action, thereby temporarily limiting the moving block at the correction station, preventing the secondary positioning pin from retracting when subjected to correction force, and thus ensuring the stability of the correction process.

[0024] Furthermore, a bottom groove is provided at the bottom of the displacement block, and a toggle rod is rotatably arranged in the bottom groove via a second torsion spring. The end of the toggle rod facing the motion groove is arc-shaped. A vertical rod is fixedly arranged at the top of the second locking rod, and the side wall of the vertical rod abuts against the side wall of the toggle rod.

[0025] With the above technical solution, when the displacement block moves in the reverse direction after the correction is completed, the actuating rod will contact the upright and drive the second locking rod to rotate, so that the second locking rod is released from the locking state of the first locking rod, thereby realizing the automatic unlocking and return reset of the moving block, reducing manual intervention and improving the continuous operation efficiency of the device.

[0026] The beneficial effects of this invention are as follows: This invention, by setting a main positioning pin, a secondary positioning pin, a floating seat, and a flared secondary positioning hole, enables the box part to first complete the main reference positioning after entering the molding cavity, and then be adaptively guided by the secondary positioning pin. It has good compatibility with common problems such as warping, slight hole deviation, and local contour distortion in large-size box parts of polyphenylene sulfide composite materials, and can reduce the risk of damage caused by clamping interference and forced fit. This invention incorporates a correction mechanism at the end of the drive threaded rod. This design ensures that the secondary locating pin, after insertion into the secondary locating hole, is not stationary but continuously subjected to fine-tuning action from the correction blocks on both sides. This fine-tuning action is dynamic and precise, gradually guiding the secondary locating pin to a standard positioning state through step-by-step adjustments. Simultaneously, during the process of reaching the standard positioning state, the secondary locating pin also applies a flexible correction force to the housing component. This flexible correction force is characterized by avoiding rigid impact on the housing component while effectively correcting its shape. Through this design, the invention achieves simultaneous positioning and correction of the housing component, thereby significantly improving the positioning accuracy of the housing component during the forming process and providing strong assurance for overall processing quality. This invention, by setting up structures such as telescopic rods, telescopic springs, first locking rods, second locking rods, and actuating rods, enables the moving block to automatically buffer and lock when in position, and to automatically unlock and return when resetting, thereby reducing manual intervention and mechanical impact, improving the efficiency of cyclic operations, and is suitable for rapid prototyping, assembly positioning, and mass production of lightweight battery boxes made of polyphenylene sulfide composite materials. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structural connection between the slide plate, the connector, and the housing in this invention; Figure 3 This is a schematic diagram of the structural connection of the molding cavity in this invention; Figure 4 This is a schematic diagram of the internal structure and connection of the positioning box in this invention; Figure 5 This is a schematic diagram of the structural connection of the correction mechanism in this invention; Figure 6 yes Figure 5 A magnified view of a section at point A in the middle; Figure 7 This is a schematic diagram of the structural connection between the moving block and the support in this invention; Figure 8 yes Figure 7 A magnified view of a section at point B in the middle; Figure 9 This is a cross-sectional view of the displacement block in this invention.

[0028] Reference numerals: 1. Molding machine; 2. Worktable; 3. Hydraulic plate; 4. Box body; 5. Molding cavity; 6. Main positioning pin; 7. Main positioning hole; 8. Secondary positioning hole; 9. Positioning box; 10. Through hole; 11. Floating seat; 12. Secondary positioning pin; 13. Servo motor; 14. Drive threaded rod; 15. Support; 16. Smooth section; 17. Moving block; 18. Connecting part; 19. Slide plate; 20. Slide groove; 21. Slide rail; 22. Drive bevel gear 23. Driven bevel gear; 24. Crossbar; 25. Transverse threaded rod; 26. Transverse block; 27. Support rod; 28. Correcting block; 29. ​​Cage; 30. Motion groove; 31. Displacement block; 32. Telescopic rod; 33. Washer; 34. Telescopic spring; 35. Baffle; 36. First locking rod; 37. First locking groove; 38. Second locking rod; 39. Second locking groove; 40. Bottom groove; 41. Second torsion spring; 42. Actuating rod; 43. Vertical rod. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0030] This embodiment provides a rapid prototyping and positioning device for lightweight battery housings made of polyphenylene sulfide composite materials, such as... Figure 1 As shown, this embodiment provides a rapid prototyping and positioning device for lightweight battery housing made of polyphenylene sulfide composite material, including a molding machine 1, a worktable 2 and a hydraulic plate 3 in the molding machine 1, with the hydraulic plate 3 located above the worktable 2.

[0031] Combination Figure 2 and Figure 3As can be seen from the content, a box-shaped component 4 is slidably disposed on the side wall of the hydraulic plate 3 facing the workbench 2. A molding cavity 5 is installed on the top of the workbench 2. The molding cavity 5 is a concave design. The box-shaped component 4 is located directly above the molding cavity 5. The shape of the molding cavity 5 is consistent with the shape of the box-shaped component 4. In this embodiment, the box-shaped component 4 can be a lightweight battery box-shaped component of polyphenylene sulfide composite material that is to be rapidly molded, to be corrected and positioned, or to be transferred to the subsequent assembly station.

[0032] Combination Figure 1 The contents of the document are as follows: a connector 18 is fixedly installed on the top of the box component 4, and a sliding plate 19 is installed on the top of the connector 18. A sliding groove 20 is opened on the side wall of the hydraulic plate 3. The sliding plate 19 is slidably connected to the inner wall of the sliding groove 20. Through the cooperation of the connector 18, the sliding plate 19 and the sliding groove 20, it is convenient for the staff to quickly install the box component 4 onto the hydraulic plate 3. When the hydraulic plate 3 drives the box component 4 to press down, the guiding effect between the sliding plate 19 and the sliding groove 20 can also keep the box component 4 in a stable position and avoid significant swaying during the pressing process.

[0033] from Figure 2 , Figure 3 and Figure 4 As can be seen, a main positioning pin 6 is fixedly installed at the bottom of the molding cavity 5, a main positioning hole 7 is opened at the corresponding position of the box part 4, a secondary positioning hole 8 is opened on the side wall of the box part 4, a positioning box 9 is installed on the side wall of the molding cavity 5, a through hole 10 is opened on the inner wall of the molding cavity 5, a floating seat 11 is installed in the positioning box 9, and a secondary positioning pin 12 is installed in the floating seat 11. The secondary positioning pin 12 passes through the through hole 10 and is inserted into the secondary positioning hole 8. The cooperation between the main positioning pin 6 and the main positioning hole 7 is mainly used to complete the initial reference positioning of the box part 4; while the cooperation between the secondary positioning pin 12 and the secondary positioning hole 8 is used to further assist in the positioning and correction of the box part 4 after the main reference is established.

[0034] Furthermore, the secondary positioning hole 8 is designed with a flared opening, and the secondary positioning hole 8 and the main positioning hole 7 are located on different planes of the housing component 4. Through the above design, the housing component 4 can be initially positioned by the main positioning pin 6 and the main positioning hole 7 during the pressing process, and then the secondary positioning pin 12 gradually enters the secondary positioning hole 8 under the guidance of the flared opening structure, thereby effectively improving the adaptability of the housing component 4 to slight deformation.

[0035] The end of the secondary positioning pin 12 is spherical, and the diameter of the through hole 10 is larger than the outer diameter of the secondary positioning pin 12. The spherical end design combined with the larger diameter of the through hole 10 allows the secondary positioning pin 12 to swing within a certain range under the drive of the floating seat 11 before entering the secondary positioning hole 8, so as to adapt to the hole position deviation caused by uneven molding shrinkage or local warping of the box part 4.

[0036] Combined Figure 4 - Figure 8As can be seen from the contents, the positioning box 9 is equipped with a servo motor 13, and a drive threaded rod 14 is fixedly installed at the output end of the servo motor 13. The positioning box 9 is also equipped with two supports 15. A smooth section 16 is opened at the end of the drive threaded rod 14 away from the servo motor 13. The drive threaded rod 14 and the smooth section 16 pass through the two supports 15 respectively. A moving block 17 is threadedly connected to the drive threaded rod 14. A floating seat 11 is fixedly installed on the top of the moving block 17. A slide rail 21 is fixedly installed at the bottom of the positioning box 9. The moving block 17 is slidably connected to the slide rail 21. The slide rail 21 can constrain the movement direction of the moving block 17 and prevent the moving block 17 from shaking during reciprocating motion.

[0037] A correction mechanism for the positioning pin 12 is installed at the end of the drive threaded rod 14 away from the servo motor 13. The correction mechanism includes a drive bevel gear 22, a driven bevel gear 23, a crossbar 24, two transverse threaded rods 25, two transverse moving blocks 26, two support rods 27, and two straightening blocks 28. The drive bevel gear 22 is fixedly connected to the smooth section 16. A retainer 29 is fixedly installed on the side wall of the support 15. Both the drive bevel gear 22 and the driven bevel gear 23 are rotatably mounted in the retainer 29. The drive bevel gear 22 meshes with the driven bevel gear 23. The crossbar 24 is fixedly mounted on the side wall of the driven bevel gear 23. Two transverse threaded rods 25 are fixedly connected to both ends of the crossbar 24, and two transverse moving blocks 26 are threadedly connected to the two transverse threaded rods 25. Two support rods 27 are fixedly connected to the side walls of the two transverse moving blocks 26. The top of the support 15 has a motion groove 30, and displacement blocks 31 are slidably connected to both ends of the motion groove 30. Two straightening blocks 28 are fixed to the top of the two displacement blocks 31. The two straightening blocks 28 have a semi-circular design facing each other at one end, and the secondary positioning pin 12 is located at the center of the semi-circle. Through this structural design, when the drive threaded rod 14 continues to rotate and the moving blocks 17 no longer move forward, the two straightening blocks 28 can gradually move towards both sides of the secondary positioning pin 12, thereby flexibly guiding the secondary positioning pin 12.

[0038] Combined Figure 7 and Figure 8 As can be seen from the content, a telescopic rod 32 is fixedly installed between the moving block 17 and the support 15 away from the servo motor 13. A washer 33 is fixedly installed at each end of the telescopic rod 32. One washer 33 abuts against the side wall of the moving block 17, and the other washer 33 abuts against the side wall of the support 15. A telescopic spring 34 is wound around the telescopic rod 32. By setting the telescopic rod 32 and the telescopic spring 34, an elastic buffer can be formed when the moving block 17 moves to the end position, while ensuring that the secondary positioning pin 12 has a continuous pre-tightening effect after being inserted into the secondary positioning hole 8.

[0039] A baffle 35 is fixedly installed at the end of the transverse threaded rod 25 away from the crossbar 24. The outer diameter of the baffle 35 is larger than the outer diameter of the transverse threaded rod 25. The baffle 35 can prevent the transverse moving block 26 from accidentally falling off the transverse threaded rod 25, thereby ensuring the long-term stability of the correction mechanism.

[0040] Combined Figure 7 , Figure 8 and Figure 9 As can be seen from the content, the moving block 17 has a first locking rod 36 fixedly installed on each of its two side walls. The side wall of the first locking rod 36 has a first locking groove 37. The side wall of the support 15 is rotatably installed with a second locking rod 38 via a first torsion spring. The second locking rod 38 has a second locking groove 39 on the side away from the first locking groove 37. The positions of the first locking rod 36 and the second locking rod 38 correspond to each other, and the opposite ends of the first locking rod 36 and the second locking rod 38 are both arc-shaped. The side walls of the first locking groove 37 and the second locking groove 39 are both magnetic. Through the above design, when the moving block 17 moves to the predetermined position, the first locking rod 36 and the second locking rod 38 can automatically engage under the guidance of the arc-shaped ends and remain locked by magnetism, thereby preventing the moving block 17 from regressing during subsequent correction.

[0041] The displacement block 31 has a bottom groove 40, in which a toggle lever 42 is rotatably mounted via a second torsion spring 41. The end of the toggle lever 42 facing the movement groove 30 is arc-shaped. A vertical rod 43 is fixedly mounted on the top of the second locking rod 38, and the side wall of the vertical rod 43 abuts against the side wall of the toggle lever 42. The function of this structure is that when the displacement block 31 moves during the subsequent reset process, the toggle lever 42 can touch the vertical rod 43 and push the second locking rod 38 to rotate, thereby releasing the locking relationship between the second locking rod 38 and the first locking rod 36, allowing the movement block 17 to return smoothly.

[0042] The working principle of this embodiment is as follows: First, the housing 4 is installed on the connector 18, and then the connector 18 and the slide plate 19 are slid into the slide groove 20 together, thereby installing the housing 4 onto the hydraulic plate 3. Subsequently, the hydraulic plate 3 is driven to press down, causing the box part 4 to gradually enter the forming cavity 5. In the initial stage of pressing down, the main positioning pin 6 will be inserted into the main positioning hole 7 first, thereby performing the first reference positioning of the box part 4. As the hydraulic plate 3 continues to press down, the box part 4 will gradually fit against the inner wall of the forming cavity 5 and tend to be stable. After the housing component 4 is initially in place, the servo motor 13 is started. The operation of the servo motor 13 will drive the drive threaded rod 14 to rotate. The moving block 17 set on the drive threaded rod 14 will move along the slide rail 21 to the side away from the servo motor 13, thereby driving the floating seat 11 and the secondary positioning pin 12 to move together towards the through hole 10. As the secondary positioning pin 12 gradually emerges from the through hole 10, since the secondary positioning hole 8 adopts a flared design and the end of the secondary positioning pin 12 is spherical, and the diameter of the through hole 10 is larger than the outer diameter of the secondary positioning pin 12, even if the housing part 4 has slight warping, slight hole deviation or local deformation, the secondary positioning pin 12 can still perform small-range attitude compensation with the cooperation of the floating seat 11 and smoothly insert into the secondary positioning hole 8. As the moving block 17 continues to move forward and gradually approaches the support 15 on the side away from the servo motor 13, the telescopic rod 32 and the telescopic spring 34 will be compressed first, thus playing the role of end buffering and elastic pre-tightening; at the same time, the first locking rod 36 will contact the second locking rod 38 under the guidance of the arc end, and push the second locking rod 38 to rotate around its axis. Under the restoring action of the first torsion spring, the second locking rod 38 will automatically swing back, so that the first locking rod 36 and the second locking rod 38 form a locking, and achieve stable adsorption by means of the magnetism of the side walls of the first locking groove 37 and the second locking groove 39. At this time, the moving block 17 is locked in the predetermined correction position. After the moving block 17 reaches the position of the smooth section 16 and is locked, the drive threaded rod 14 will no longer push the moving block 17 forward when it continues to rotate. At this time, the drive bevel gear 22, which is fixedly connected to the smooth section 16, starts to drive the driven bevel gear 23 to rotate continuously. The driven bevel gear 23 then drives the cross rod 24 and the two transverse threaded rods 25 to work synchronously. Under the threaded engagement of the transverse threaded rod 25 and the transverse moving block 26, the two transverse moving blocks 26 will gradually move towards each other, and then drive the two displacement blocks 31 to slide synchronously towards the center in the moving groove 30 through the support rod 27. As the two displacement blocks 31 move towards the center, the two correction blocks 28 located on top of them will also gradually approach the two sides of the auxiliary positioning pin 12. Since the end of the correction block 28 facing the auxiliary positioning pin 12 is a semi-circular structure, it will not generate too much pressure after contacting the auxiliary positioning pin 12. Instead, it will squeeze and guide the auxiliary positioning pin 12 towards the standard center position in a relatively gentle and controllable manner. Since the auxiliary positioning pin 12 has been inserted into the auxiliary positioning hole 8, this guiding effect will be further transmitted to the housing component 4, thereby realizing the flexible correction of the local hole position deviation and posture deviation of the housing component 4. After the correction action is completed, the servo motor 13 can be reversed. As the drive threaded rod 14 rotates in the opposite direction, the two transverse blocks 26 and the displacement block 31 will first retract to both sides. During the retraction of the displacement block 31, the toggle rod 42 in the bottom groove 40 will contact the upright rod 43 at the top of the second locking rod 38 and push the second locking rod 38 to rotate, so that it is released from the locking state of the first locking rod 36, thereby completing the automatic unlocking. After the second locking lever 38 is unlocked, the moving block 17 can drive the floating seat 11 and the secondary positioning pin 12 to retract to the initial position under the combined action of the reverse transmission of the drive threaded rod 14 and the reset force of the telescopic spring 34, so that the secondary positioning pin 12 exits the secondary positioning hole 8 and retracts back into the through hole 10. Finally, the hydraulic plate 3 is driven to rise, causing the housing component 4 to detach from the molding cavity 5, and the sliding plate 19 is pulled out of the slide groove 20, thus completing the rapid molding, positioning, and correction operation of the lightweight battery housing made of polyphenylene sulfide composite material. The entire process realizes continuous actions of "initial positioning by the main positioning pin - flexible introduction of the secondary positioning pin - secondary correction by the correction mechanism - automatic unlocking and reset", which can effectively improve the molding and positioning efficiency of PPS composite material housing components in mass production.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A rapid prototyping and positioning device for lightweight battery housing made of polyphenylene sulfide composite material, comprising a molding machine (1), wherein the molding machine (1) is provided with a worktable (2) and a hydraulic plate (3), wherein the hydraulic plate (3) is located above the worktable (2), characterized in that: The hydraulic plate (3) has a box-shaped component (4) slidably mounted on the side wall facing the workbench (2). A forming cavity (5) is installed on the top of the workbench (2). The forming cavity (5) is concave. The box-shaped component (4) is located directly above the forming cavity (5). The shape of the forming cavity (5) is consistent with the shape of the box-shaped component (4). The bottom of the molding cavity (5) is fixedly provided with a main positioning pin (6), the corresponding position of the box part (4) is provided with a main positioning hole (7), the side wall of the box part (4) is provided with a secondary positioning hole (8), the side wall of the molding cavity (5) is provided with a positioning box (9), the inner wall of the molding cavity (5) is provided with a through hole (10), the positioning box (9) is provided with a floating seat (11), the floating seat (11) is provided with a secondary positioning pin (12), the secondary positioning pin (12) passes through the through hole (10) and is inserted into the secondary positioning hole (8); The positioning box (9) is equipped with a servo motor (13), and a drive threaded rod (14) is fixedly installed at the output end of the servo motor (13). The positioning box (9) is also equipped with two supports (15). A smooth section (16) is opened at the end of the drive threaded rod (14) away from the servo motor (13). The drive threaded rod (14) and the smooth section (16) pass through the two supports (15) respectively. A moving block (17) is threadedly connected to the drive threaded rod (14). The floating seat (11) is fixedly installed on the top of the moving block (17). A correction mechanism for the correction auxiliary positioning pin (12) is installed at the end of the drive threaded rod (14) away from the servo motor (13).

2. The rapid prototyping and positioning device for lightweight battery housing made of polyphenylene sulfide composite material according to claim 1, characterized in that, The top of the box component (4) is fixedly provided with a connector (18), the top of the connector (18) is provided with a slide plate (19), the side wall of the hydraulic plate (3) is provided with a groove (20), and the slide plate (19) is slidably connected to the inner wall of the groove (20).

3. The rapid prototyping and positioning device for lightweight battery housing made of polyphenylene sulfide composite material according to claim 1, characterized in that, The bottom of the positioning box (9) is fixedly provided with a slide rail (21), and the moving block (17) is slidably connected to the slide rail (21).

4. The rapid prototyping and positioning device for lightweight battery housing made of polyphenylene sulfide composite material according to claim 1, characterized in that, The secondary positioning hole (8) is designed with a flared opening, and the secondary positioning hole (8) and the main positioning hole (7) are located on different planes of the housing component (4).

5. The rapid prototyping and positioning device for lightweight battery housing made of polyphenylene sulfide composite material according to claim 1, characterized in that, The end of the secondary positioning pin (12) is spherical, and the diameter of the through hole (10) is larger than the outer diameter of the secondary positioning pin (12).

6. The rapid prototyping and positioning device for lightweight battery housing made of polyphenylene sulfide composite material according to claim 1, characterized in that, The correction mechanism includes a driving bevel gear (22), a driven bevel gear (23), a crossbar (24), two transverse threaded rods (25), two transverse moving blocks (26), two support rods (27), and two straightening blocks (28). The driving bevel gear (22) is fixedly connected to the smooth section (16). A retainer (29) is fixedly provided on the side wall of the support (15). The driving bevel gear (22) and the driven bevel gear (23) are both rotatably disposed in the retainer (29). The driving bevel gear (22) meshes with the driven bevel gear (23). The crossbar (24) is fixedly disposed on the side wall of the driven bevel gear (23). The two transverse threaded rods (25) are fixedly connected to both ends of the crossbar (24), the two transverse moving blocks (26) are threadedly connected to the two transverse threaded rods (25), the two support rods (27) are fixedly connected to the side walls of the two transverse moving blocks (26), the support (15) has a motion groove (30) on the top, the two ends of the motion groove (30) are slidably connected to displacement blocks (31), the two correction blocks (28) are fixed on the top of the two displacement blocks (31), the two correction blocks (28) are semi-circular at one end facing each other, and the secondary positioning pin (12) is located at the center of the semi-circle.

7. The rapid prototyping and positioning device for lightweight battery housing made of polyphenylene sulfide composite material according to claim 1, characterized in that, A telescopic rod (32) is fixedly installed between the moving block (17) and the support (15) away from the servo motor (13). A pad (33) is fixedly installed at both ends of the telescopic rod (32). One of the pads (33) abuts against the side wall of the moving block (17), and the other pad (33) abuts against the side wall of the support (15). A telescopic spring (34) is wound around the telescopic rod (32).

8. The rapid prototyping and positioning device for lightweight battery housing made of polyphenylene sulfide composite material according to claim 6, characterized in that, A baffle (35) is fixedly provided at the end of the transverse threaded rod (25) away from the crossbar (24), and the outer diameter of the baffle (35) is larger than the outer diameter of the transverse threaded rod (25).

9. The rapid prototyping and positioning device for lightweight battery housing made of polyphenylene sulfide composite material according to claim 6, characterized in that, The moving block (17) has a first locking rod (36) fixedly installed on each side wall. The first locking rod (36) has a first locking groove (37) on its side wall. The support (15) has a second locking rod (38) rotatably installed on its side wall via a first torsion spring. The second locking rod (38) has a second locking groove (39) on the side away from the first locking groove (37). The positions of the first locking rod (36) and the second locking rod (38) correspond to each other. The opposite ends of the first locking rod (36) and the second locking rod (38) are both arc-shaped. The side walls of the first locking groove (37) and the second locking groove (39) are both magnetic.

10. The rapid prototyping and positioning device for lightweight battery housing made of polyphenylene sulfide composite material according to claim 9, characterized in that, The displacement block (31) has a bottom groove (40) at the bottom. A toggle rod (42) is rotatably installed in the bottom groove (40) via a second torsion spring (41). The end of the toggle rod (42) facing the motion groove (30) is arc-shaped. A vertical rod (43) is fixedly installed on the top of the second clamp rod (38). The side wall of the vertical rod (43) abuts against the side wall of the toggle rod (42).

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