A shaping device for battery support production

Abstract

The application discloses a shaping device for battery support production and relates to the technical field of electric car part machining. The device comprises a supporting frame. Two groups of symmetrical shaping assemblies are arranged on the top of the supporting frame. Each group of the shaping assemblies comprises a fixed die seat fixedly arranged at the middle position of the top of the supporting frame and a movable die seat movably arranged at the corresponding end of the top of the supporting frame. The die closing surfaces of the fixed die seat and the movable die seat are both provided with shaping die cavities matched with the shape of the tubular support body. A synchronous die closing mechanism is arranged on the supporting frame and used for driving the synchronous movement of the two movable die seats. The device forms a three-point embracing floating positioning mode, automatically corrects the position offset of the workpiece, ensures the accurate alignment of the bending contour and the shaping die cavities, avoids the die closing misplacement and the pipe wall bruise, and simultaneously realizes the automatic unloading effect.

Description

Technical Field

[0001] This invention relates to the field of electric vehicle parts processing technology, and in particular to a shaping device for the production of battery brackets. Background Technology

[0002] The trolley battery bracket is the core structural component that supports the power battery pack. Trolley battery brackets are mostly made of rectangular square tubes that are cold-bent and pre-formed into a multi-segmented bent frame structure. After pre-forming, there are defects such as bending angle deviation and insufficient flatness, which need to be corrected by forming mold pressing.

[0003] Currently, most equipment in the industry uses single-station forming equipment, which has low production efficiency. Some dual-station equipment adopts a dual-station structure of "synchronous driving of two moving molds by the same power source and fixed molds at both ends", which can realize synchronous forming of two stations with single power. The structure is compact and low-cost, and the forming force on both sides is completely consistent, resulting in good product consistency. However, this structure has a core technical problem: the workpiece to be formed is a pre-bent irregular square tube, which has springback and dimensional dispersion. Manual feeding can only be rough placement, which cannot guarantee that the bending section of the workpiece is precisely aligned with the forming mold cavity of the fixed mold and the moving mold. When the mold is closed, the workpiece is prone to misalignment, tube wall damage, and bending position deviation. At best, the forming accuracy is not up to standard, and at worst, the workpiece is scrapped, making it unsuitable for mass production.

[0004] Existing conventional positioning solutions mostly involve additional pneumatic positioning pins and clamping mechanisms, which not only increases equipment costs and control complexity but also undermines the simplicity of the single power source structure. Furthermore, the positioning mechanism is prone to interference with the mold closing action, resulting in insufficient reliability. Therefore, there is an urgent need to design a shaping device for battery bracket production to solve the above problems. Summary of the Invention

[0005] The technical problem that this invention aims to solve in view of the above-mentioned prior art is that existing forming equipment cannot guarantee the precise alignment between the pre-bent workpiece and the forming mold cavity, and defects such as workpiece misalignment, pipe wall damage, and bending position displacement are prone to occur during mold closing.

[0006] To address the shortcomings of existing technologies, this invention provides a shaping device for battery bracket production, comprising a support frame. The top of the support frame is provided with two sets of symmetrically arranged shaping components. Each set of shaping components includes a fixed mold base fixedly installed at the middle position of the top of the support frame and a movable mold base movably installed at the corresponding end of the top of the support frame. The mold mating surfaces of the fixed mold base and the movable mold base are provided with shaping mold cavities that match the shape of the tubular bracket body. The support frame is provided with a synchronous mold mating mechanism for driving the two movable mold bases to move synchronously. The fixed mold base and the moving mold base are provided with multiple sets of first positioning components, and the positions of the multiple sets of first positioning components are respectively arranged at the bends of the tubular support body. One end of the fixed mold base is provided with a second positioning component, which is used to axially position and prevent torsion of the tube end of the tubular support body. A heating mechanism is integrated at the end of the fixed mold base and on the second positioning component for delivering hot air into the tubular support body before shaping.

[0007] Furthermore, the bottom of the mold-closing surface of the fixed mold base is fixed with several support plates for supporting the tubular support body, and the bottom of the mold-closing surface of the moving mold base is provided with several second slots that correspond one-to-one with the support plates.

[0008] Furthermore, the top of the mold closing surface of the moving mold base is fixed with several anti-deviation plates for limiting the tubular support body, and the top of the mold closing surface of the fixed mold base is provided with several first slots that correspond to and mate with the anti-deviation plates one by one. The tubular support body is fitted and limited between the anti-deviation plates and the support plate.

[0009] Furthermore, the synchronous mold closing mechanism includes a bidirectional screw rotatably mounted on the support frame, and a forward and reverse motor is fixedly installed on the outer wall of one end of the support frame. The output shaft of the forward and reverse motor is fixedly connected to one end of the bidirectional screw. Movable slots are provided on both sides of the top of the support frame, and the threaded sections at both ends of the bidirectional screw are respectively screwed with movable platforms passing through the corresponding movable slots. The top of the movable platform is fixedly connected to the bottom of the corresponding moving mold base.

[0010] Furthermore, guide holes are provided at both ends of the moving platform, and guide rods passing through the guide holes are fixed on the inner wall of the support frame. Second guide grooves are provided at the four top corners of the support frame, and guide seats that slide along the second guide grooves are fixed at both ends of the bottom of the moving mold base.

[0011] Furthermore, the first positioning component includes two hidden grooves formed in the forming cavity of the fixed mold base and one hidden groove formed in the forming cavity of the moving mold base. The top and bottom of the fixed mold base and the moving mold base are provided with first guide grooves communicating with the hidden grooves. The inner wall of the first guide groove is slidably provided with a slide block, and a second spring is fixedly installed at one end of the slide block and one end of the first guide groove. The upper and lower slide blocks corresponding to the same hidden groove are rotatably connected by a positioning wheel through a pin. The positions of the three positioning wheels correspond one-to-one with the three bent surfaces of the tubular support body, forming a three-point floating pre-positioning structure.

[0012] Furthermore, the second positioning component includes a synchronizing rod, and the end of the fixed mold base is provided with a connecting groove for the synchronizing rod to move. One end of the connecting groove is provided with a connecting hole for one end of the synchronizing rod to be inserted. A first spring is fixedly installed on one end face of the synchronizing rod and the inner wall of one end of the connecting hole. The diameter of the synchronizing rod is smaller than the inner cavity height of the forming mold cavity. The other end of the synchronizing rod is coaxially arranged with one end of the tubular support body. An insert rod inserted into the inner wall of one end of the tubular support body is fixed on the other end of the synchronizing rod. Four equally spaced arc-shaped memory metal plates are fixed on the outer wall of the insert rod. The positions of the four arc-shaped memory metal plates correspond to the four sides of the inner wall of one end of the tubular support body.

[0013] Furthermore, the heating mechanism includes an air guide cavity inside the other end of the synchronizing rod, and an installation hole communicating with the air guide cavity is opened at the middle of the other end of the synchronizing rod and the insertion rod. A heating rod is fixedly installed on the inner wall of the installation hole. Several exhaust holes are opened at the end of the air guide cavity facing the insertion rod. Hot air is discharged through the exhaust holes and flows along the inner cavity of the tubular support body. A miniature fan is fixedly installed at one end of the fixed mold base, and a multi-port flexible hose is fixedly installed at the exhaust end of the miniature fan. An air inlet hole penetrating the synchronizing rod is opened at the other end of the air guide cavity, and the air inlet hole is fixedly connected to the multi-port flexible hose.

[0014] Furthermore, a sealing sleeve is fixedly installed on the other end face of the synchronizing rod, which is sleeved outside the insertion rod. After the workpiece is positioned, the sealing sleeve fits against the end face of the tube opening of the tubular support body.

[0015] Furthermore, a controller is fixedly installed on the support frame, and the controller is electrically connected to the synchronous mold closing mechanism and the heating mechanism respectively.

[0016] The beneficial effects of this invention are as follows: 1. In this invention, a forward and reverse motor, a bidirectional screw and two moving tables are used in conjunction to drive two moving mold seats to move in opposite directions synchronously through a single power source, so as to realize synchronous opening and closing of molds and shaping at two workstations, which greatly improves the production efficiency of a single machine.

[0017] 2. In this invention, the two positioning wheels in the fixed mold base and the one positioning wheel in the moving mold base, together with the structure of the slide, the second spring and the hidden groove, complete the initial support of the workpiece through the two positioning wheels on the side of the fixed mold base during the feeding stage. During the mold closing stage, the positioning wheel on the side of the moving mold base pushes and fits the workpiece, forming a three-point encircling floating positioning, automatically closing and correcting the workpiece position offset, ensuring that the bending contour and the forming mold cavity are accurately aligned, avoiding mold closing misalignment and pipe wall damage, without the need for additional equipment.

[0018] 3. In this invention, the second positioning component, consisting of a synchronizing rod, an insert rod, and an arc-shaped memory metal plate, works in conjunction with the internally integrated air guide cavity, heating rod, micro fan, and sealing sleeve. On one hand, the insert rod is inserted into the pipe opening to complete the axial and anti-torsion pre-positioning of the workpiece. During the hot air preheating stage, the arc-shaped memory metal plate expands automatically to tighten the inner wall of the pipe, further enhancing the positioning stability and preventing mold movement. On the other hand, the hot air flows along the entire inner cavity of the pipe, softening the pipe material from the inside out, significantly reducing the amount of springback after shaping and improving shaping efficiency, thereby realizing the integrated positioning, heating, and tightening functions.

[0019] 4. In this invention, the support plate of the fixed mold base and the anti-deviation plate of the moving mold base cooperate with the corresponding second slot and first slot. During the mold closing process, they are gradually inserted and aligned to limit the vertical displacement of the workpiece and simultaneously assist in guiding the horizontal position of the workpiece, providing stability for the final shaping and effectively ensuring the overall flatness of the workpiece after shaping.

[0020] 5. In this invention, the first spring cooperates with the synchronizing rod, and the second spring cooperates with the positioning wheel. When the mold is opened, the spring force automatically resets the mold, the positioning wheel pops out to lift the workpiece to avoid sticking to the forming mold cavity, and the synchronizing rod extends to help the workpiece get out of the deep part of the mold cavity. No additional unloading mechanism is needed, thus achieving the effect of automatic unloading. Attached Figure Description

[0021] Figure 1 This is a perspective view of a shaping device for battery bracket production proposed in this invention; Figure 2 This is a schematic diagram of the synchronous mold closing mechanism of a shaping device for battery bracket production proposed in this invention; Figure 3 This is a top cross-sectional view of a shaping device for battery bracket production proposed in this invention; Figure 4 This is a schematic diagram of the forming mold cavity and anti-deviation plate structure of a forming device for battery bracket production proposed in this invention; Figure 5 This is a schematic diagram of the first positioning component of a shaping device for battery bracket production proposed in this invention; Figure 6 This is a schematic diagram of the synchronizing rod and support plate structure of a shaping device for battery bracket production proposed in this invention; Figure 7 This is a schematic diagram of the first spring and hidden groove structure of a shaping device for battery bracket production proposed in this invention; Figure 8 This is a schematic diagram of the connecting hole and connecting groove structure of a shaping device for battery bracket production proposed in this invention; Figure 9This is a schematic diagram of a multi-channel hose and an arc-shaped memory metal plate structure for a shaping device used in the production of battery brackets, as proposed in this invention. Figure 10 This is a schematic diagram of the air guide cavity and exhaust hole structure of a shaping device for battery bracket production proposed in this invention.

[0022] Figure label: 1. Support frame; 2. Fixed mold base; 3. Moving mold base; 4. Synchronous mold closing mechanism; 41. Forward and reverse motor; 42. Movable slot; 43. Bidirectional screw; 44. Moving stage; 45. Guide rod; 5. Tubular support body; 6. Second positioning component; 61. Synchronous rod; 62. First spring; 63. Connecting hole; 64. Connecting slot; 65. Insert rod; 66. Arc-shaped memory metal plate; 7. Heating mechanism; 71. Miniature fan; 72. 73. Multi-port hose; 74. Heating rod; 75. Sealing sleeve; 76. Air guide cavity; 77. Air inlet; 78. Air outlet; 89. First positioning assembly; 80. First guide groove; 81. Second spring; 82. Positioning wheel; 83. Slide seat; 84. Hidden groove; 9. Controller; 10. Second guide groove; 11. Guide seat; 12. Shaping mold cavity; 13. Anti-deviation plate; 14. Second slot; 15. Support plate; 16. First slot. Detailed Implementation

[0023] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0024] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0026] Reference Figures 1-10This invention provides a shaping device for battery bracket production, comprising a support frame 1. Two sets of symmetrically arranged shaping components are disposed on the top of the support frame 1. Each shaping component includes a fixed mold base 2 fixedly installed at the middle position of the top of the support frame 1, and a movable mold base 3 movably disposed at the corresponding end of the top of the support frame 1. The mating surfaces of both the fixed mold base 2 and the movable mold base 3 are provided with shaping mold cavities 12 that match the shape of the tubular bracket body 5. A plurality of support plates 15 for supporting the tubular bracket body 5 are fixed to the bottom of the mating surface of the fixed mold base 2. A plurality of first mold plates 15 corresponding to and abutting with the support plates 15 are provided to the bottom of the mating surface of the movable mold base 3. The top of the mold-closing surface of the moving mold base 3 is fixed with several anti-deviation plates 13 for limiting the tubular support body 5. The top of the mold-closing surface of the fixed mold base 2 is provided with several first slots 16 that correspond one-to-one with the anti-deviation plates 13. The tubular support body 5 is fitted and limited between the anti-deviation plates 13 and the support plate 15. During the mold-closing process, the support plate 15 is inserted into the second slot 14 and the anti-deviation plates 13 are inserted into the first slots 16 to form an upper and lower insertion fit, which limits the workpiece deviation in the vertical direction and synchronously guides the workpiece to return to the center of the forming mold cavity 12. The support frame 1 is provided with a synchronous mold-closing mechanism 4 for driving the two moving mold bases. 3. Synchronous movement in opposite directions enables synchronous opening and closing of the two sets of forming components. The synchronous mold closing mechanism 4 includes a bidirectional screw 43 rotatably mounted on the support frame 1, and a forward and reverse motor 41 is fixedly installed on the outer wall of one end of the support frame 1. The output shaft of the forward and reverse motor 41 is fixedly connected to one end of the bidirectional screw 43. Movable slots 42 are provided on both sides of the top of the support frame 1, and the threaded sections at both ends of the bidirectional screw 43 are respectively screwed with moving platforms 44 that pass through the corresponding movable slots 42. The top of the moving platform 44 is fixedly connected to the bottom of the corresponding moving mold base 3. Guide holes are provided at both ends of the moving platform 44, and a guide hole is fixedly provided on the inner wall of the support frame 1. The guide rod 45 passes through the guide hole, and the top four corners of the support frame 1 are provided with second guide grooves 10. The bottom ends of the moving mold base 3 are fixed with guide seats 11 that slide along the second guide grooves 10. The forward and reverse motor 41 drives the bidirectional screw 43 to rotate in the forward and reverse directions. The two moving tables 44 are synchronously driven to move in opposite directions along the guide rod 45 through the reverse threads at both ends, thereby driving the two moving mold bases 3 to open and close the mold synchronously. The guide rod 45 and the guide seat 11 form a double guide constraint to ensure the straightness of the movement of the moving mold base 3 and avoid the misalignment of the mold closing edge. The entire synchronous mold closing mechanism 4 can achieve dual-station synchronous drive with a single motor, which is compact and efficient. Multiple sets of first positioning components 8 are provided on the fixed mold base 2 and the moving mold base 3, and the positions of the multiple sets of first positioning components 8 are respectively arranged at the bends of the tubular support body 5, for floating pre-positioning of the bent section of the workpiece. The first positioning component 8 includes two hidden grooves 85 opened in the forming mold cavity 12 of the fixed mold base 2 and one hidden groove 85 opened in the forming mold cavity 12 of the moving mold base 3. The top and bottom of the fixed mold base 2 and the moving mold base 3 are provided with first guide grooves 81 communicating with the hidden grooves 85. The length of the first guide groove 81 is greater than the length of the hidden groove 85. The inner wall of the first guide groove 81 is slidably provided with a slide block 84, and a second spring 82 is fixedly installed at one end of the slide block 84 and one end of the first guide groove 81. The upper and lower slide blocks 84 corresponding to the same hidden groove 85 are connected by a spring. Positioning wheels 83 are rotatably connected via a pin shaft. The positions of the three positioning wheels 83 correspond one-to-one with the three bent surfaces of the tubular support body 5, forming a three-point floating pre-positioning structure. In the initial state, the positioning wheels 83 protrude from the inner wall of the forming mold cavity 12. When under pressure, they retract into the hidden groove 85 with the slide 84. When the mold is opened and the material is loaded, the two positioning wheels 83 on the side of the fixed mold base 2 support the bent surface of the workpiece and complete the initial placement. When the mold is closed, the positioning wheels 83 on the side of the moving mold base 3 advance with the moving mold base 3 and fit against the third bent surface of the workpiece, forming a three-point encircling floating positioning, which automatically corrects the positional deviation of the workpiece. When the mold is closed and continuously advanced, the positioning wheels 83 are compressed by the pressure of the pipe wall and retract into the hidden groove 85, thereby realizing the automatic alignment of the bent pipe and solving the problems of mold closing misalignment and pipe wall damage. A second positioning component 6 is provided at one end of the fixed mold base 2 for axial positioning and anti-torsion limiting of the tube end of the tubular support body 5. The second positioning component 6 includes a synchronizing rod 61, and a connecting groove 64 for the synchronizing rod 61 to move is provided at the end of the fixed mold base 2. A connecting hole 63 for one end of the synchronizing rod 61 to be inserted is provided at one end of the connecting groove 64. A first spring 62 is fixedly installed on one end face of the synchronizing rod 61 and the inner wall of one end of the connecting hole 63. The diameter of the synchronizing rod 61 is smaller than the inner cavity height of the forming mold cavity 12. The other end of the synchronizing rod 61 is coaxially arranged with one end of the tubular support body 5, and the other end of the synchronizing rod 61 is fixed to the inside of one end of the tubular support body 5. The insert rod 65 has four equally spaced arc-shaped memory metal plates 66 fixed on its outer wall. The positions of the four arc-shaped memory metal plates 66 correspond to the inner wall of one end of the tubular support body 5. When heated, they can expand outward to fit the tube wall, achieving tube opening tightening and positioning. In the initial state, the insert rod 65 is inserted into the workpiece tube opening to complete axial positioning and anti-torsion limiting. During the preheating stage, the arc-shaped memory metal plates 66 expand due to phase change and tighten to fit the inner wall of the tube opening, enhancing the positioning effect. When the mold is closed, the synchronous rod 61 is compressed by the axial thrust of the first spring 62 and retracts into the connecting groove 64 to avoid the forming stroke, further improving the positioning stability during the mold closing process and preventing the workpiece from moving and misaligning. A heating mechanism 7 is integrated at the end of the fixed mold base 2 and the second positioning component 6. This mechanism is used to deliver hot air into the tubular support body 5 before shaping, thereby preheating and softening the workpiece.

[0027] In this invention, the heating mechanism 7 includes an air guide cavity 75 located inside the other end of the synchronizing rod 61. A mounting hole communicating with the air guide cavity 75 is located at the middle of the other end of the synchronizing rod 61 and the insertion rod 65. A heating rod 73 is fixedly mounted on the inner wall of the mounting hole. The air guide cavity 75 has several exhaust holes 77 at the end facing the insertion rod 65. Hot air is discharged through the exhaust holes 77 and flows along the inner cavity of the tubular support body 5. A miniature fan 71 is fixedly mounted on one end of the mold base 2, and a multi-connected flexible hose 72 is fixedly mounted on the exhaust end of the miniature fan 71. A through-hole is located at the other end of the air guide cavity 75, penetrating the synchronizing rod 61. The air inlet 76 is fixedly connected to the multi-way hose 72. A sealing sleeve 74 is fixedly installed on the other end face of the synchronous rod 61 and sleeved on the outside of the insertion rod 65. After the workpiece is positioned, the sealing sleeve 74 fits against the end face of the tube opening of the tubular support body 5 to reduce the leakage of hot air. The airflow generated by the micro fan 71 is sent into the air guide cavity 75 through the multi-way hose 72 and the air inlet 76. When it flows through the heating rod 73, it is heated into hot air and blown into the inner cavity of the tubular support body 5 from the exhaust hole 77. It flows along the length of the tube to achieve full tube preheating, reduce the yield strength of the tube, greatly reduce the amount of springback after shaping, and improve shaping efficiency.

[0028] In this invention, a controller 9 is fixedly installed on the support frame 1, and the controller 9 is electrically connected to the synchronous mold closing mechanism 4 and the heating mechanism 7 respectively. The controller 9 controls the operation of the forward and reverse motor 41, the heating rod 73 and the micro fan 71 in a unified manner, so as to realize the fully automated operation and reduce the intensity of manual operation.

[0029] In summary, the working principle of the present invention is as follows: during operation, the forward and reverse motor 41 of the synchronous mold closing mechanism 4 drives the bidirectional screw 43 to rotate to the mold opening position. At this time, the second spring 82 of the first positioning component 8 and the first spring 62 of the second positioning component 6 are both in a naturally extended state. Next, the operator places the tubular support body 5 to be shaped into the fixed mold base 2 side of the corresponding workstation. First, the two bent surfaces on the same side of the workpiece are placed against the two positioning wheels 83 of the fixed mold base 2. At the same time, the bottom of the workpiece is placed against the support plate 15 at the bottom of the mold closing surface of the fixed mold base 2 to complete the initial support and positioning of the workpiece. Then, the tube opening of the workpiece near the end of the fixed mold base 2 is aligned with the insertion rod 65 and pushed inward so that the insertion rod 65 is fully inserted into the tube opening until the end face of the tube opening is flat against the surface of the sealing sleeve 74 to complete the axial limit and anti-torsion pre-positioning of the workpiece. At this stage, the support is only completed by the two positioning wheels 83 on one side of the fixed mold base 2 and the support plate 15. The positioning wheel 83 on the side of the moving mold base 3 is in the mold opening position away from the workpiece and does not contact the workpiece. After the material loading is completed, the controller 9 sends a start signal, and the heating mechanism 7 starts to run. The airflow generated by the micro fan 71 is sent into the multi-way hose 72, and then delivered to the air guide cavity 75 inside the synchronous rod 61 through the air inlet 76. When the airflow flows through the heating rod 73 in the mounting hole, it is heated to the set temperature. The hot air formed is blown out evenly from the multiple exhaust holes 77 at the end of the air guide cavity 75 and flows along the inner cavity of the tubular support body 5 to the other end. It preheats and softens the entire tube from the inside to the outside, reduces the yield strength of the tube, and greatly reduces the amount of springback after shaping. During the preheating process, the arc-shaped memory metal plate 66 on the outer wall of the insertion rod 65 expands outward after being heated to the phase change temperature and fits tightly against the four inner walls of the tube opening. It automatically tightens the tube opening, further enhances the positioning accuracy of the workpiece, and avoids the workpiece from shifting and misaligning during subsequent mold closing. The sealing sleeve 74 at the end of the synchronous rod 61 always fits the end face of the tube opening, effectively reducing hot air leakage and improving heating efficiency and temperature uniformity. After the preheating reaches the set time, the controller 9 controls the synchronous mold closing mechanism 4 to start. The forward and reverse motor 41 drives the bidirectional screw 43 to rotate in the forward direction. The reverse threads at both ends of the bidirectional screw 43 synchronously drive the two moving platforms 44 to move smoothly towards each other along the guide rod 45. The two moving platforms 44 synchronously drive the top moving mold base 3 to move closer to the middle fixed mold base 2. In the initial stage of mold closing, the positioning wheel 83 in the forming mold cavity 12 of the moving mold base 3 first contacts the curved surface on the other side of the workpiece. At this time, the two positioning wheels 83 of the fixed mold base 2 and one positioning wheel 83 of the moving mold base 3 respectively abut against the three corresponding curved surfaces of the workpiece, forming a ring-shaped three-point floating positioning structure. This automatically brings the workpiece to the center position of the forming mold cavity 12 for correction, eliminating the slight positional offset caused by feeding and ensuring the bending of the workpiece. The contour is perfectly aligned with the shape reference of the forming mold cavity 12. As the moving mold base 3 continues to advance towards the fixed mold base 2, the three positioning wheels 83 are subjected to continuous reverse pressure from the workpiece tube wall, which drives the corresponding upper and lower slides 84 to compress the second spring 82 along the first guide groove 81 and gradually retract into the corresponding hidden groove 85, completely avoiding the subsequent forming working surface. At the same time, the synchronizing rod 61 is also subjected to the axial thrust of the workpiece, compressing the first spring 62 and gradually retracting into the connecting groove 64. During the advancement process, the anti-deviation plate 13 on the top of the mold closing surface of the moving mold base 3 is first inserted into the first slot 16 corresponding to the fixed mold base 2, and the support plate 15 on the bottom of the mold closing surface of the fixed mold base 2 is simultaneously inserted into the second slot 14 corresponding to the moving mold base 3. The two work together to limit the vertical displacement of the workpiece and further correct the position of the workpiece. When the moving mold base 3 and the fixed mold base 2 are fully closed, the tubular support body 5 is completely enclosed in the forming mold cavity 12 formed by the closing of the fixed mold base 2 and the moving mold base 3. The controller 9 controls the forward and reverse motor 41 to enter the pressure holding state. The stable mold closing force, combined with the plastic deformation after the tube is preheated, completes all the forming processes of workpiece bending angle correction and overall flatness correction in one go. After the pressure holding reaches the set process time, the forming process is completed. The controller 9 controls the forward and reverse motor 41 to rotate in the reverse direction, driving the bidirectional screw 43 to drive the two moving tables 44 to move outward synchronously. The moving mold base 3 moves with the moving table. 44. Synchronous retraction and mold opening: During the mold opening process, the second spring 82 gradually rebounds, pushing the corresponding slide 84 and positioning wheel 83 outwards. The positioning wheel 83 on the side of the fixed mold base 2 supports the workpiece to prevent it from sticking to the inner wall of the fixed mold cavity. At the same time, the first spring 62 gradually rebounds, pushing the synchronous rod 61 and the insertion rod 65 outwards to assist the workpiece in leaving the deep part of the mold cavity. After the moving mold base 3 has completely retracted to the mold opening position, the operator can remove the shaped tubular support body 5 from the positioning wheel 83 and insertion rod 65 of the fixed mold base 2, put in the next workpiece to be processed, and enter the next work cycle.

[0030] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A shaping device for battery bracket production, comprising a support frame (1), wherein two sets of symmetrically arranged shaping components are provided on the top of the support frame (1), each set of shaping components includes a fixed mold base (2) fixedly installed at the middle position of the top of the support frame (1), and a movable mold base (3) movably installed at the corresponding end of the top of the support frame (1), wherein the mold mating surfaces of the fixed mold base (2) and the movable mold base (3) are provided with shaping mold cavities (12) that match the shape of the tubular bracket body (5), characterized in that: The support frame (1) is provided with a synchronous mold closing mechanism (4) for driving the two moving mold bases (3) to move synchronously; The fixed mold base (2) and the moving mold base (3) are provided with multiple sets of first positioning components (8), and the positions of the multiple sets of first positioning components (8) are respectively arranged at the bends of the tubular support body (5); One end of the fixed mold base (2) is provided with a second positioning component (6) for axial positioning and anti-torsion limiting of the tube end of the tubular support body (5); The end of the fixed mold base (2) and the second positioning component (6) are integrated with a heating mechanism (7) for delivering hot air into the tubular support body (5) before shaping.

2. A shaping device for the production of battery holders according to claim 1, characterized in that The bottom of the mold closing surface of the fixed mold base (2) is fixed with several support plates (15) for supporting the tubular support body (5), and the bottom of the mold closing surface of the moving mold base (3) is provided with several second slots (14) that correspond to and are connected to the support plates (15).

3. A shaping device for battery bracket production according to claim 2, characterized in that: The top of the mold closing surface of the moving mold base (3) is fixed with several anti-deviation plates (13) for limiting the tubular support body (5). The top of the mold closing surface of the fixed mold base (2) is provided with several first slots (16) that correspond to and are connected to the anti-deviation plates (13). The tubular support body (5) is fitted and limited between the anti-deviation plates (13) and the support plate (15).

4. A shaping device for battery bracket production according to claim 1, characterized in that: The synchronous mold closing mechanism (4) includes a bidirectional screw (43) rotatably mounted on the support frame (1), and a forward and reverse motor (41) is fixedly installed on the outer wall of one end of the support frame (1). The output shaft of the forward and reverse motor (41) is fixedly connected to one end of the bidirectional screw (43). Movable slots (42) are provided on both sides of the top of the support frame (1), and the threaded sections at both ends of the bidirectional screw (43) are respectively screwed with moving platforms (44) that pass through the corresponding moving slots (42). The top of the moving platform (44) is fixedly connected to the bottom of the corresponding moving mold base (3).

5. A shaping device for battery bracket production according to claim 4, characterized in that: The moving platform (44) has guide holes at both ends, and the inner wall of the support frame (1) is fixed with a guide rod (45) that passes through the guide hole. The support frame (1) has a second guide groove (10) at each of the four corners at the top, and the bottom ends of the moving mold base (3) are fixed with guide seats (11) that slide along the second guide groove (10).

6. A shaping device for battery bracket production according to claim 1, characterized in that: The first positioning component (8) includes two hidden grooves (85) opened in the forming mold cavity (12) of the fixed mold base (2) and one hidden groove (85) opened in the forming mold cavity (12) of the moving mold base (3). The top and bottom of the fixed mold base (2) and the moving mold base (3) are provided with first guide grooves (81) communicating with the hidden grooves (85). The inner wall of the first guide groove (81) is slidably provided with a slide (84). One end of the slide (84) and one end of the first guide groove (81) are fixedly installed with a second spring (82). The upper and lower slides (84) corresponding to the same hidden groove (85) are rotatably connected by a pin shaft with positioning wheels (83). The positions of the three positioning wheels (83) correspond one-to-one with the three bent surfaces of the tubular support body (5), forming a three-point floating pre-positioning structure.

7. A shaping device for battery bracket production according to claim 1, characterized in that: The second positioning component (6) includes a synchronizing rod (61), and the end of the fixed mold base (2) is provided with a connecting groove (64) for the synchronizing rod (61) to move. One end of the connecting groove (64) is provided with a connecting hole (63) for one end of the synchronizing rod (61) to be inserted. One end face of the synchronizing rod (61) and the inner wall of one end of the connecting hole (63) are fixedly installed with a first spring (62). The diameter of the synchronizing rod (61) is smaller than the inner cavity height of the forming mold cavity (12). The other end of the synchronizing rod (61) is coaxially arranged with one end of the tubular support body (5). The other end of the synchronizing rod (61) is fixed with an insert rod (65) inserted into one end of the tubular support body (5). The outer wall of the insert rod (65) is fixed with four equally spaced arc-shaped memory metal plates (66). The positions of the four arc-shaped memory metal plates (66) correspond to the four sides of the inner wall of one end of the tubular support body (5).

8. A shaping device for battery bracket production according to claim 7, characterized in that: The heating mechanism (7) includes an air guide cavity (75) opened inside the other end of the synchronizing rod (61), and an installation hole communicating with the air guide cavity (75) is opened at the middle of the other end of the synchronizing rod (61) and the insertion rod (65). A heating rod (73) is fixedly installed on the inner wall of the installation hole. Several exhaust holes (77) are opened at the end of the air guide cavity (75) facing the insertion rod (65). Hot air is discharged through the exhaust holes (77) and flows along the inner cavity of the tubular support body (5). A miniature fan (71) is fixedly installed at one end of the fixed mold base (2), and a multi-port hose (72) is fixedly installed at the exhaust end of the miniature fan (71). An air inlet hole (76) penetrating the synchronizing rod (61) is opened at the other end of the air guide cavity (75), and the air inlet hole (76) is fixedly connected to the multi-port hose (72).

9. A shaping device for battery bracket production according to claim 8, characterized in that: The other end face of the synchronizing rod (61) is fixedly installed with a sealing sleeve (74) sleeved outside the insert rod (65). After the workpiece is positioned, the sealing sleeve (74) fits against the end face of the tube opening of the tubular support body (5).

10. A shaping device for battery bracket production according to claim 1, characterized in that: A controller (9) is fixedly installed on the support frame (1), and the controller (9) is electrically connected to the synchronous mold closing mechanism (4) and the heating mechanism (7) respectively.

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