Battery temperature protector housing punch press die

Abstract

The utility model relates to stamping die technical field, concretely is a battery temperature protector shell stamping die, including upper die plate, lower die plate, material belt, install the stamping plate on the upper die plate, install a plurality of cylinder shell on the stamping plate, install spring and the ejector rod in the cylinder shell, the end of cylinder shell installs the baffle of covering the ejector rod, the lower die plate lower surface installs the suction pipe, sets up a plurality of suction nozzles on the suction pipe, and the suction nozzle passes through the lower die plate, and the material belt is placed to the lower die plate and corresponds with the suction nozzle position. The utility model utilizes the suction pipe to make the buffer head negative pressure adsorption material belt, and a plurality of buffer heads are fixed to the material belt in many points, prevent the material belt deviation, prevent the deviation problem in the material belt stamping process, in the stamping process, the anti -wear head is prior to the trimming cutter, the punching cutter, the cutting profile cutter and the material belt contact, and the anti -wear head and the lower die plate clamp the material belt, when stamping the material belt, can prevent the material belt sliding, guarantee the stamping accuracy.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, specifically a stamping die for a battery temperature protector housing. Background Technology

[0002] The ultra-miniature battery temperature protector housing for mobile phones is formed by stamping. When processing the material strip using a high-speed continuous stamping die, several stamping cutters are used to process the material strip into the battery temperature protector housing.

[0003] Among the relevant technologies, a stamping process for precise positioning of material strip (publication number CN106216483A) was found. In this process, multiple material strip connection points are set between the product and the material strip. After coating the product and the material strip, the connection points are cut off. Positioning is achieved by using the material strip positioning holes on the material strip. This ensures that the positional accuracy between the product and the material strip after cutting is almost the same as the accuracy of the blanking.

[0004] However, due to the small size of the battery temperature protector housing, the strip used to produce the housing is narrow and thin. When using positioning holes to position the strip, there may be situations where the strip size is limited and positioning holes cannot be set. The thin strip has poor rigidity, and the strip may slip when the stamping knife is stamping it, especially when the stamping knife becomes dull. Utility Model Content

[0005] The purpose of this invention is to provide a stamping die for a battery temperature protector housing to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A stamping die for a battery temperature protector housing includes an upper die, a lower die, and a strip material; A stamping plate is installed on the upper template, and several cylindrical shells are installed on the stamping plate. Springs and push rods are installed in the cylindrical shells, and a baffle is installed at the end of the cylindrical shell to cover the push rods. The elasticity of the springs enables the push rods to extend and retract elastically, forming a flexible clamp on the strip during the stamping process, ensuring accurate positioning of the strip and avoiding deformation or damage to the strip caused by rigid clamping. A suction tube is installed on the lower surface of the lower template, and a plurality of suction nozzles are provided on the suction tube, the suction nozzles passing through the lower template; The strip is placed on the lower template and corresponds to the position of the suction nozzle. During stamping, the strip is adsorbed and fixed, which improves the stability of the strip, prevents the strip from shifting during stamping, and ensures the dimensional accuracy of stamping.

[0007] Furthermore, the lower template surface is provided with several punching cuts, and the lower surface of the stamping plate is equipped with a trimming knife, a punching knife, and a shape cutting knife. The knives are integrated and installed on the stamping plate to ensure the synchronous movement of each knife, ensure the relative positional accuracy of trimming, punching, and shape cutting, and improve the forming consistency of the battery temperature protector shell.

[0008] Furthermore, three forming reset heads and two fine-tuning heads are installed on the lower surface of the stamping plate. The forming reset heads and fine-tuning heads can make precise fine adjustments to the strip to ensure the flatness of the battery temperature protector shell and ensure the regularity of the shape of the workpiece after forming.

[0009] Furthermore, the suction tube is connected to a buffer head, and the surface of the buffer head is provided with several telescopic grooves. The elastic deformation of the telescopic grooves plays a buffering role. The buffer head can stably suck up the material belt without causing the material belt to deviate, thus achieving non-destructive positioning of the material belt and preventing the material belt from bending upward.

[0010] Furthermore, the suction tube is equipped with connectors at both ends, and the connectors have sockets on their surfaces, which enable quick plugging and unplugging of the suction tube and the negative pressure pipeline, simplifying the mold installation and disassembly process, facilitating mold maintenance and quick mold change operations on the production line, and improving the flexibility of production scheduling.

[0011] Furthermore, the push rod has a socket, and an anti-abrasion head is detachably connected inside the socket. When the anti-abrasion head wears out due to long-term friction with the material strip, the anti-abrasion head can be replaced separately without replacing the entire push rod, thus reducing mold maintenance costs. The anti-abrasion head will not wear down the material strip, ensuring the surface quality of the battery temperature protector housing is up to standard.

[0012] Furthermore, the side of the baffle is threaded and screwed to the cylinder shell. The surface of the baffle is provided with two disassembly holes, which can be quickly disassembled according to the stamping requirements to inspect, replace or maintain the springs and push rods inside the cylinder shell, thereby improving the convenience of mold maintenance. Special tools are used for screwing operations to avoid slippage during disassembly and assembly, and improve disassembly and assembly efficiency.

[0013] Compared with the prior art, the beneficial effects of this utility model are: (1) The suction tube is used to make the buffer head adsorb the material strip under negative pressure. Several buffer heads fix the material strip at multiple points to prevent the material strip from shifting. This prevents the material strip from shifting during the stamping process and improves the stamping accuracy. The buffer head can position the material strip of different widths and has good adaptability.

[0014] (2) During the stamping process, the anti-abrasion head contacts the strip before the cutting edge knife, punching knife, and outward cutting knife. The anti-abrasion head and the lower template clamp the strip. When stamping the strip, it can prevent the strip from sliding. When the cutting edge knife, punching knife, and outward cutting knife move upward, the anti-abrasion head presses against the strip, which can limit the strip from tilting upward and ensure stamping accuracy.

[0015] (3) The edge cutting knife, punching knife, and outer shape cutting knife are punched sequentially from the edge of the strip to the middle and then to the edge. First, the edge of the strip is cut and punched to quickly position and shape the strip. This avoids the strip from moving due to uneven force during the subsequent middle punching. When the strip is cut into the outer shape in the second step, the strip has been fixed by the first two steps, which can further ensure the dimensional accuracy of the outer shape cutting and reduce the scrap rate.

[0016] (4) After the material strip is pressurized, the three forming reset heads flatten the material strip and accurately correct the deformed material strip to ensure that the surface of the battery temperature protector shell is flat and meets the flatness requirements of subsequent assembly. The two micro-adjusting heads adjust the material strip and correct the dimensional deviation of the temperature protector shell to ensure the consistency of key dimensions such as hole position and shape. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the lower template and the material strip of this utility model; Figure 3 This is a schematic diagram of the connection between the lower template and the suction tube of this utility model; Figure 4 This is a schematic diagram of the connection between the suction tube and the suction nozzle of this utility model; Figure 5 This is a schematic diagram of the connection between the upper template and the stamping plate of this utility model; Figure 6 This is a schematic diagram of the connection between the stamping plate and the cutting blade of this utility model; Figure 7 This is a schematic diagram of the connection between the cylindrical shell and the baffle of this utility model; Figure 8 This is a schematic diagram showing the disassembled structure of the cylindrical shell and spring of this utility model.

[0018] In the diagram: 1. Upper template; 2. Lower template; 3. Stamping plate; 4. Material strip; 5. Connecting joint; 6. Suction pipe; 7. Punching notch; 8. Edge trimmer; 9. Punching knife; 10. Outline trimmer; 11. Forming reset head; 12. Fine adjustment head; 13. Anti-abrasion head; 14. Telescopic groove; 15. Suction nozzle; 16. Buffer head; 17. Cylinder shell; 18. Baffle; 19. Disassembly hole; 20. Top rod; 21. Spring. Detailed Implementation

[0019] 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.

[0020] Example: Please see Figure 1-8 This utility model provides a technical solution: A stamping die for a battery temperature protector housing includes an upper die plate 1, a lower die plate 2, and a strip material 4; A stamping plate 3 is installed on the upper template 1. Several cylindrical shells 17 are installed on the stamping plate 3. There are four cylindrical shells 17. Corresponding mounting holes are provided on the stamping plate 3. A spring 21 and a push rod 20 are installed in the cylindrical shell 17. Lubricating oil is provided inside the cylindrical shell 17 to reduce the movement resistance of the push rod 20. A baffle 18 is installed at the end of the cylindrical shell 17 to cover the push rod 20. The spring 21 realizes the extension and retraction function of the push rod 20. Before stamping, the push rod 20 holds the material strip 4 to prevent the material strip 4 from moving. The push rod 20 and the material strip 4 are staggered at the position to be stamped.

[0021] A suction pipe 6 is installed on the lower surface of the lower template 2. Several suction nozzles 15 are set on the suction pipe 6. The suction nozzles 15 pass through the lower template 2. The suction pipe 6 is a square flat tube to reduce the space occupied. The suction pipe 6 has several perforated plates on its side to facilitate the connection between the suction pipe 6 and the lower template 2. The material strip 4 is fixed by negative pressure without damaging the material strip 4. The suction nozzles 15 are misaligned with the stamped part of the material strip 4 to ensure the stability of the positioning of the material strip 4.

[0022] The strip 4 is placed on the lower template 2 and corresponds to the position of the suction nozzle 15. The push rod 20 clamps the strip 4 with the lower template 2 to achieve double positioning and fixation, providing a reliable foundation for subsequent stamping and forming processes and improving the overall stamping quality of the mold.

[0023] In this embodiment, as Figure 5 As shown, the lower template 2 has several punching holes 7 on its surface. The lower surface of the stamping plate 3 is equipped with a trimming knife 8, a punching knife 9, and a shaping knife 10. The position and size of the punching holes 7 correspond to the trimming knife 8, the punching knife 9, and the shaping knife 10. The waste generated by the stamping of the strip 4 is discharged from the punching holes 7, and there will be no waste interfering with the stamping of the strip 4. The trimming knife 8, the punching knife 9, and the shaping knife 10 can simultaneously complete multiple processes of trimming, punching, and shaping in a single stamping stroke, which greatly shortens the processing steps and improves production efficiency.

[0024] The edge trimming blade 8 first cuts off the upper edge of the strip 4, the punching blade 9 punches holes in the strip 4, and the profile cutting blade 10 cuts off the lower edge of the strip 4. This step-by-step stamping process, starting from the edge and working back to the edge of the strip 4, disperses the stress load of a single stamping, making the strip 4 more evenly stressed. This is particularly suitable for thin-walled, high-precision stamped parts such as battery temperature protector housings. Step-by-step stamping avoids the combined impact force generated by multiple blades simultaneously contacting the strip 4, reducing the wear rate of the blade edges and the risk of chipping. Simultaneously, cutting off the edges first removes burrs or irregularities from the strip 4, preventing edge impurities from damaging the intermediate punching blade 9, thus extending the maintenance cycle and service life of the entire tool set.

[0025] In this embodiment, as Figure 5 As shown, three forming reset heads 11 and two fine-tuning heads 12 are installed on the lower surface of the stamping plate 3. During the stamping process, the strip 4 is prone to elastic rebound or local warping due to the pressure of the cutting tool. The three forming reset heads 11 form a stable support layout. During the flattening process, they can fix the position of the strip 4 and prevent the strip 4 from shifting due to stress release after stamping, thus ensuring the stability of the temperature protector shell size. For minor errors caused by mold assembly gaps, cutting tool wear, or strip 4 thickness deviation, the two fine-tuning heads 12 can make local fine adjustments to the position or flatness of the strip 4, correct the size deviation of the temperature protector shell, and ensure the consistency of key dimensions such as hole position and shape.

[0026] The reset head is responsible for overall flattening and shaping, while the fine-tuning head 12 is responsible for precise local correction, forming a dual guarantee mechanism of coarse adjustment and fine adjustment. This solves the problem of overall deformation after stamping, compensates for minor dimensional deviations, and ensures the quality stability of each batch of stamped parts. It is especially suitable for the production needs of high-precision thin-walled parts such as battery temperature protector housings.

[0027] In this embodiment, as Figure 4 As shown, the suction tube 6 is connected to a buffer head 16. The surface of the buffer head 16 has several expansion grooves 14. The buffer head 16 can be made of rubber. The expansion grooves 14 facilitate the compression and deformation of the buffer head 16. The expansion grooves 14 allow the buffer head 16 to better fit the mating surface or installation gap when under pressure. The flexible nature of the rubber material can also fill tiny gaps, forming a reliable sealing structure. This prevents negative pressure leakage, ensures stable suction force of the suction nozzle 15 on the material strip 4, avoids displacement of the material strip 4 during stamping due to poor sealing, and ensures stamping accuracy.

[0028] In this embodiment, as Figure 4As shown, the suction pipe 6 is equipped with connectors 5 at both ends. The connectors 5 have sockets on their surfaces. The suction pipe 6 can be pulled out from both ends at the same time, which can ensure that the buffer head 16 can stably hold the material strip 4. A high-frequency response two-position solenoid valve can be installed in the socket. When the solenoid valve is turned off, the buffer head 16 loses its suction force, and the material strip 4 is released. When the solenoid valve is turned on, the buffer head 16 holds the material strip 4, which is used to position the material strip 4 during stamping.

[0029] In this embodiment, as Figure 8 As shown, the top rod 20 has a socket, and an anti-abrasion head 13 is detachably connected inside the socket. The anti-abrasion head 13 can be made of materials such as plastic and nylon. The hardness of materials such as plastic and nylon is lower than that of the material strip 4, and they have good self-lubricating properties. When it is clamped in contact with or moves relative to the material strip 4, it avoids scratches, indentations or damage to the coating on the surface of the material strip 4. The anti-abrasion head 13 made of materials such as plastic and nylon has a certain degree of elasticity and can form a flexible clamping surface to adapt to the slight thickness deviation of the material strip 4 and improve clamping stability.

[0030] When the anti-abrasion head 13 wears or deforms due to long-term use, it is not necessary to disassemble the entire ejector rod 20 assembly. Only the single anti-abrasion head 13 needs to be replaced to restore its use, which greatly shortens the mold maintenance time.

[0031] In this embodiment, as Figure 8 As shown, the side of the baffle 18 is threaded and screwed to the cylinder shell 17. The surface of the baffle 18 is provided with two disassembly holes 19. When the elasticity of the spring 21 decreases, it can be quickly disassembled by twisting with a wrench or other special tools. There is no need to disassemble the cylinder shell 17, the top rod 20 and other surrounding parts, which greatly shortens the operation time for replacing the spring 21.

[0032] Specifically, during use, the upper template 1 and the lower template 2 are installed on the stamping machine, the material strip 4 is placed in the middle of the lower template 2, and the material strip 4 is automatically moved by the traction equipment. When the material strip 4 is stamped, the suction pipe 6 is in a negative pressure state, and the buffer head 16 sucks up the material strip 4 and pre-positions the material strip 4. The upper template 1 drives the stamping plate 3 to move down. The anti-abrasion head 13 contacts the strip 4 before the cutting edge knife 8, punching knife 9, and outward cutting knife 10. The anti-abrasion head 13 pushes the top rod 20 to compress the spring 21. The spring 21 pushes the anti-abrasion head 13 to press the strip 4, thereby positioning the strip 4. When the cutting edge knife 8, punching knife 9, and outward cutting knife 10 press the strip 4, they ensure that the strip 4 will not loosen, thus achieving precise pressing of the strip 4. When the trimming knife 8, punching knife 9, and outward cutting knife 10 move upward and reset, the material strip 4 is sucked by the buffer head 16, which can ensure that the material strip 4 will not get stuck on the trimming knife 8, punching knife 9, and outward cutting knife 10. At the same time, the spring 21 pushes the anti-wear head 13 to push the material strip 4 open. During the stamping and reset process, the material strip 4 will not move on the lower template 2, ensuring processing accuracy. When the material belt 4 is moving, the suction pipe 6 is under normal pressure, so that the buffer head 16 no longer sucks up the material belt 4 and will not affect the continuous pressing of the material belt 4.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stamping die for a battery temperature protector housing, characterized in that, include: An upper template is provided, on which a stamping plate is installed. Several cylindrical shells are installed on the stamping plate. Springs and push rods are installed in the cylindrical shells. A baffle that covers the push rods is installed at the end of the cylindrical shell. A lower template, wherein a suction tube is installed on the lower surface of the lower template, and a plurality of suction nozzles are provided on the suction tube, the suction nozzles passing through the lower template; The material strip is placed on the lower template and corresponds to the position of the suction nozzle, and the top rod clamps the material strip with the lower template.

2. The stamping die for a battery temperature protector housing according to claim 1, characterized in that: The lower template surface is provided with several punching cuts, and the lower surface of the stamping plate is equipped with a cutting edge knife, a punching knife, and a shape cutting knife.

3. The stamping die for a battery temperature protector housing according to claim 1, characterized in that: Three forming reset heads and two fine adjustment heads are installed on the lower surface of the stamping plate.

4. The stamping die for a battery temperature protector housing according to claim 1, characterized in that: The suction tube is connected to a buffer head, and the surface of the buffer head is provided with several telescopic grooves.

5. The stamping die for a battery temperature protector housing according to claim 1, characterized in that: The suction tube is fitted with connectors at both ends, and the connectors have sockets on their surfaces.

6. The stamping die for a battery temperature protector housing according to claim 1, characterized in that: The top rod has a socket, and an anti-abrasion head is detachably connected inside the socket.

7. The stamping die for a battery temperature protector housing according to claim 1, characterized in that: The baffle is threaded on its side and screwed to the cylinder shell, and the baffle surface is provided with two disassembly holes.

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