Tab mold structure

Abstract

The invention relates to a tab mold structure, and relates to the technical field of molds, the tab mold structure comprises a lower mold frame, the top of the lower mold frame is provided with an upper mold frame, a lower mold core is embedded in the center of the top of the lower mold frame, the center of the top of the upper mold frame is provided with an upper mold, and the upper mold is matched with the lower mold core; movable grooves are formed in the two sides of the bottom of the upper die, ejector blocks are embedded in the movable grooves, ejector rods are connected to the tops of the ejector blocks, the ejector rods are also embedded in the movable grooves, ejection springs are connected to the two sides of the ends, close to the movable grooves, of the ejector blocks, and ejector plates are connected to the bottom ends of the ejector blocks; the outer diameter of the top plate is matched with the inner diameter of the movable groove; after the punch forming upper die is lifted up, the ejector block and the ejector plate are ejected out of the upper die through resilience force of the supporting spring to abut against the tab, so that the tab is separated from the upper die, and the situation that the tab is attached to the surface of the upper die to affect follow-up forming due to the fact that the tab is thin and light after the tab is punched is avoided.

Description

Technical Field

[0001] The present application relates to the field of mold technology, and in particular to a tab mold structure. Background Art

[0002] The tab mold is a tool used to make the tabs of lithium-ion batteries. Tabs are a raw material for lithium-ion battery products. They are metal conductors that lead the positive and negative electrodes from the battery core and are the contact points between the positive and negative electrodes of the battery. The tab mold shapes the pole piece by controlling the engagement between the upper and lower molds of the equipment, so that the pole piece forms the tab according to the design size requirements; In the prior art, the relevant technology of the tab stamping die can refer to the Chinese patent with announcement number CN210231218U, which discloses a stamping die used for tab processing, and relates to the technical field of tab processing equipment. The stamping die used for tab processing includes a fixed plate, and the middle parts of both sides of the upper surface of the fixed plate are fixedly connected with guide columns, and the top ends of the two guide columns are fixedly connected with a top plate, and the middle part of the lower surface of the top plate is fixedly connected with a cylinder, and the telescopic end of the cylinder is fixedly connected with a movable plate, and the middle parts of both sides of the movable plate are fixedly connected with sliding cylinders, and the middle part of the front bottom end of the movable plate and the middle part of the front top end of the fixed plate are provided with slots, and the upper template is inserted into the slot on the movable plate, and the lower template is inserted into the slot on the fixed plate, and the middle part of the front side of the upper template and the middle part of the front side of the lower template are provided with a rotary handle. The stamping die used for tab processing is convenient for replacing the upper template and the lower template, and has a reasonable structural design, simple operation, convenient use, and improved work efficiency. The inventor found the following problems in the prior art during the implementation of this application: At present, when the upper die is lifted after the tab is stamped, the tab is thin and easily attached to the surface of the upper die and lifted up, which may cause the tab to deform and affect the subsequent tab forming. At the same time, the die is easily worn during the continuous stamping and blanking process and a certain amount of heat is generated. At the same time, a certain amount of debris is easily generated during the stamping process. It does not have an integrated structure for cooling and cleaning the die. Summary of the invention

[0003] The purpose of this application is to provide a tab mold structure.

[0004] In the first aspect, the present application provides a tab mold structure that adopts the following technical solution: A tab mold structure comprises a lower mold frame, an upper mold frame is arranged on the top of the lower mold frame, guide columns are arranged at the edge of the upper surface of the lower mold frame, and guide grooves are arranged at the bottom of the upper mold frame, the guide columns match the guide grooves, the guide columns are embedded in the guide grooves, the outer walls of the guide columns are sleeved with support springs, the top ends of the support springs abut against the upper mold frame, a lower mold core is embedded at the center of the top of the lower mold frame, an upper mold is arranged at the center of the top of the upper mold frame, the upper mold matches the lower mold core, movable grooves are arranged on both sides of the bottom of the upper mold, a top block is embedded in the interior of the movable groove, a top rod is connected to the top of the top block, and the top rod is also embedded in the interior of the movable groove, both sides of the end of the top block close to the movable groove are connected with ejection springs, the end of the ejection spring away from the top block abuts against the inner wall of the movable groove, and a top plate is connected to the bottom end of the top block, and the outer diameter of the top plate matches the inner diameter of the movable groove.

[0005] By adopting the above technical scheme, the battery pole ear can be stamped and formed by cooperating with the lower mold frame and the upper mold frame, the guide column and the guide groove play a limiting role, the top of the upper mold frame can be connected to the stamping cylinder for driving, and the support spring plays a rebound role so that after the stamping of the pole ear is completed, the stamping cylinder is lifted and the rebound force of the support spring can assist the upper mold frame and the upper mold to return upward. At the same time, when the pole ear is stamped by the upper mold and the lower mold core, the top plate on the surface of the top block contacts the pole ear and shrinks into the movable groove, the ejection spring is compressed and shrinks, and the top plate matches the movable groove so that the surface of the upper mold is flat after shrinkage. After stamping and forming, when the upper mold frame and the upper mold are lifted by the cylinder, the top block and the top plate are ejected from the outside of the upper mold by the rebound force of the support spring and abut against the pole ear, thereby separating the pole ear from the upper mold, avoiding the pole ear being attached to the surface of the upper mold and rising due to the thinner and lighter pole ear after the stamping of the pole ear.

[0006] The inner wall of the lower mold frame is arranged with a limiting groove, the bottom outer wall of the lower mold core is arranged with a limiting rod, the limiting rod is embedded in the limiting groove, the outer walls on both sides of the lower mold core are provided with a clamping groove, the inner walls on both sides of the lower mold frame close to the clamping groove are provided with a fixing cavity, the interior of the fixing cavity is provided with a fixing mechanism, and the fixing mechanism includes a threaded barrel, a threaded rod, a clamping block, an adjusting knob and a connecting rod.

[0007] By adopting the above technical solution, the position of the lower mold core is limited and fixed by embedding the limit rod in the limit groove, avoiding deviation leading to reduced mold accuracy, and the lower mold core can be clamped and fixed by the fixing mechanism.

[0008] One side inner wall of the fixed cavity is connected with a threaded barrel through a bearing, and one end inner wall of the threaded barrel is threadedly connected with a threaded rod, and the end of the threaded rod away from the threaded barrel is connected with a clamping block, and the clamping block is embedded in the clamping groove, and both sides of the clamping block are connected with connecting rods, and the connecting rods are also embedded in the fixed cavity. Adjustment knobs are provided on both side outer walls of the lower mold frame, and the output ends of the two groups of adjusting knobs are connected to the corresponding threaded barrels. Twisting the adjusting knobs drives the threaded barrel to rotate synchronously, and the rotation of the threaded barrel drives the threaded rod to translate, and the translation of the threaded rod drives the clamping block to translate synchronously.

[0009] By adopting the above technical solution, the lower mold core and the lower mold frame adopt a split structure, which allows the lower mold core to be replaced alone after being worn. When the worn lower mold core needs to be replaced, the threaded barrel can be driven to rotate synchronously by twisting the adjusting knob. The rotation of the threaded barrel drives the threaded rod to move horizontally outward. The translation of the threaded rod drives the clamping block to move horizontally out of the slot, thereby canceling the fixation of the lower mold core, thereby facilitating the replacement of the lower mold core.

[0010] The bottom inner wall of the lower mold core is arranged with ejector grooves, and a demoulding ejector block is embedded in the ejector groove. The outer diameter of the demoulding ejector block matches the inner diameter of the ejector groove. The bottom centers of multiple groups of demoulding ejector blocks are connected with ejector pins, and one end of the ejector pin away from the demoulding ejector block passes through the lower mold core and is connected to the lower mold frame with a connecting plate, and the ejector pin and the connecting plate are fixedly connected to each other by bolts.

[0011] By adopting the above technical solution, the ejection groove plays a limiting role, and the demoulding ejector block can be ejected synchronously through the movement of the ejector pin, so as to facilitate the ejection work after the pole ear is stamped and formed, and avoid the pole ear being embedded in the inner wall of the lower mold core and difficult to remove. The connecting plate plays a connecting role, and the bolts between the connecting plate and the ejector pin can be disassembled by tools to facilitate the removal of the lower mold core.

[0012] The bottom of the lower mold frame is connected to the base frame by bolts, the connecting plate is arranged inside the base frame, the bottom inner wall of the base frame is arranged and connected with an electric push rod, the top output end of the electric push rod is connected to the connecting plate, the electric push rod pushes the connecting plate to perform translational movement, the movement of the connecting plate drives the ejector pin to perform synchronous movement, and the lifting of the ejector pin pushes the demoulding ejector block to perform ejection and contraction movement.

[0013] By adopting the above technical solution, the base frame plays a supporting and fixing role. After the pole ear is stamped and formed, the connecting plate can be pushed and driven by the electric push rod to move upward. The movement of the connecting plate drives the ejector pin to move synchronously. The rise of the ejector pin pushes the demoulding ejector block to perform ejection movement, thereby realizing the ejection work of the formed pole ear.

[0014] An annular air duct is arranged inside the lower mold core, the inner wall of the annular air duct is connected with the ejection groove, an air outlet nozzle is arranged at the connection point between the ejection groove and the annular air duct, and the air outlet nozzle is arranged on one side of the bottom edge of the ejection groove.

[0015] By adopting the above technical solution, the annular air duct plays a connecting role and can connect the air outlet nozzle, the air inlet pipe and the exhaust pipe to each other. When the demoulding ejector block is ejected to the outside, the ejection groove is connected to the cavity of the lower mold core, so as to facilitate the subsequent exhaust work of the air outlet nozzle.

[0016] Air inlet pipes are arranged on both sides of the edge of the annular air duct, and one end of the air inlet pipe away from the annular air duct passes through the lower mold core and is connected to a fan pump.

[0017] By adopting the above technical solution, the fan pump drives to generate high-speed airflow, which enters the annular air duct through the air inlet pipe and can be discharged through the exhaust pipe. In the process of discharge, the high-speed airflow takes away the heat generated by the continuous stamping of the lower mold core and discharges it together, thereby cooling the lower mold core to a certain extent.

[0018] One side of the two groups of annular air ducts adjacent to the air inlet pipe is connected to an exhaust pipe, one end of the exhaust pipe away from the annular air duct passes through the lower mold core and extends to the outside, and a solenoid valve is arranged in the middle of the two groups of exhaust pipes.

[0019] By adopting the above technical scheme, the high-speed airflow generated by the fan pump can be discharged through the exhaust pipe to facilitate the heat dissipation of the lower mold core. At the same time, the electric push rod is started to push the ejector pin up to push the demolding ejector block for ejection, so that the ejection groove is connected with the cavity of the lower mold core. At this time, the solenoid valve is controlled to be closed by the controller, and the high-speed airflow generated by the fan pump is transmitted through the annular air duct and then ejected through the air outlet nozzle. The high-speed airflow ejected from the air outlet nozzle can blow the inner wall of the lower mold core, and the debris and dust residue generated by the stamping of the pole ear is blown to the outside of the lower mold core through the high-speed airflow, thereby avoiding the debris and dust generated by the stamping of the pole ear remaining in the lower mold core, resulting in a reduction in the stamping effect. Therefore, the inner wall of the lower mold core can be cleaned while the mold is cooled, thereby improving the service life of the mold structure.

[0020] A controller is arranged on one side of the upper surface of the base frame, and the controller is connected to the electric push rod and the solenoid valve through electric wires.

[0021] By adopting the above technical solution, the controller plays a control role. When the electric push rod is lifted up after the stamping is completed, the lifting signal is transmitted to the controller. After receiving the signal, the controller controls the solenoid valve to close and block the airflow through the exhaust pipe to make it flow to the air outlet nozzle, so as to facilitate the cleaning of the lower mold core.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. When the upper die and the lower die core are stamping the tab, the top plate on the top block surface contacts the tab and shrinks into the movable groove, the ejection spring is compressed and shrinks, and the top plate matches the movable groove so that the surface of the upper die is flat after shrinkage. When the upper die frame and the upper die are lifted by the cylinder after stamping, the top block and the top plate are ejected from the outside of the upper die and abut against the tab by the rebound force of the support spring, so that the tab is separated from the upper die, avoiding the tab from adhering to the surface of the upper die due to its thinness and lightness after the tab is stamped, thereby affecting the subsequent tab forming; 2. A high-speed airflow is generated by a fan pump drive. The high-speed airflow enters the annular air duct through the air inlet pipe and can be discharged through the exhaust pipe. In the process of discharge, the high-speed airflow takes away the heat generated by the continuous stamping of the lower mold core and discharges it together, thereby cooling the lower mold core to a certain extent. The high-speed airflow generated by the fan pump can be discharged through the exhaust pipe to dissipate the heat of the lower mold core. After the electric push rod is started to push the ejector pin up and push the demoulding ejector block to eject, the ejection groove is connected with the cavity of the lower mold core. At this time, the ejection signal is transmitted to the controller. After receiving the signal, the controller controls the solenoid valve to close and block the airflow through the exhaust pipe so that it flows to the air outlet nozzle for spraying. The high-speed airflow sprayed from the air outlet nozzle can blow the inner wall of the lower mold core, and the debris and dust residue generated by the stamping ear are blown to the outside of the lower mold core through the high-speed airflow, thereby avoiding the debris and dust generated by the stamping ear remaining in the lower mold core, which leads to a decrease in the stamping effect. The inner wall of the lower mold core can be cleaned while the mold is cooled, thereby improving the service life of the mold structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 is a schematic diagram of the top view of the structure of Example 1 of the present application; Figure 3 is a schematic diagram of the lower mold frame structure of Example 1 of the present application; Figure 4 This is a schematic diagram of the connection structure between the movable groove and the top block of Example 1 of the present application; Figure 5 is a schematic diagram of the fixing mechanism structure of Example 1 of the present application; Figure 6 It is a schematic diagram of the connection structure between the ejection slot and the air outlet nozzle of Example 1 of the present application; Figure 7 is a schematic diagram of the annular air duct structure of Example 1 of the present application; Explanation of the reference numerals: 1. lower mold frame; 2. upper mold frame; 3. guide column; 4. guide groove; 5. support spring; 6. lower mold core; 7. upper mold; 8. movable groove; 9. ejector block; 10. ejector rod; 11. ejector spring; 12. ejector plate; 13. limit groove; 14. limit rod; 15. clamping groove; 16. fixing cavity; 17. fixing mechanism; 18. threaded cylinder; 19. threaded rod; 20. clamping block; 21. adjusting knob; 22. connecting rod; 23. ejector groove; 24. demoulding ejector block; 25. ejector pin; 26. connecting plate; 27. base frame; 28. electric push rod; 29. ​​annular air duct; 30. air outlet nozzle; 31. air inlet pipe; 32. exhaust pipe; 33. fan pump; 34. solenoid valve; 35. controller. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1 - Attachment Figure 7 , further details of this application are given.

[0025] Embodiment 1: A tab mold structure, comprising a lower mold frame 1, an upper mold frame 2 is arranged on the top of the lower mold frame 1, guide columns 3 are arranged at the edge of the upper surface of the lower mold frame 1, and guide grooves 4 are arranged at the bottom of the upper mold frame 2. The guide columns 3 match the guide grooves 4, and the guide columns 3 are embedded in the guide grooves 4. The outer wall of the guide columns 3 is sleeved with a support spring 5, and the top of the support spring 5 is in contact with the upper mold frame 2. A lower mold core 6 is embedded at the center of the top of the lower mold frame 1, and an upper mold is arranged at the center of the top of the upper mold frame 2. 7, the upper die 7 matches the lower die core 6, both sides of the bottom of the upper die 7 are provided with movable grooves 8, the interior of the movable groove 8 is embedded with a top block 9, the top of the top block 9 is connected with a top rod 10, and the top rod 10 is also embedded in the interior of the movable groove 8, both sides of the end of the top block 9 close to the movable groove 8 are connected with ejection springs 11, and the end of the ejection spring 11 away from the top block 9 abuts against the inner wall of the movable groove 8, the bottom end of the top block 9 is connected with a top plate 12, the outer diameter of the top plate 12 matches the inner diameter of the movable groove 8, and the lower die frame 1 is connected to the bottom of the top block 9. The upper die frame 2 cooperates with the upper die frame 2 to stamp the battery tabs. The edge of the cavity of the lower die core 6 is sharper and can cut the tabs. The guide column 3 and the guide groove 4 play a limiting role. The top of the upper die frame 2 can be connected to the stamping cylinder for driving. The support spring 5 plays a rebound role so that the stamping cylinder can be lifted after the tabs are stamped. The rebound force of the support spring 5 can assist the upper die frame 2 and the upper die 7 to return upward. At the same time, when the tabs are stamped by the upper die 7 and the lower die core 6, the top of the top block 9 is After the plate 12 contacts the pole ear, it shrinks into the movable groove 8, and the ejector spring 11 shrinks under pressure. The top plate 12 matches the movable groove 8 so that the surface of the upper mold 7 is flat after shrinkage. When the upper mold frame 2 and the upper mold 7 are lifted by the cylinder after stamping, the top block 9 and the top plate 12 are ejected from the outside of the upper mold 7 and abut against the pole ear by the rebound force of the support spring 5, thereby separating the pole ear from the upper mold 7, avoiding the pole ear from adhering to the surface of the upper mold 7 and performing an upward movement due to the thinner and lighter pole ear after the stamping is completed.

[0026] The inner wall of the lower mold frame 1 is arranged with a limiting groove 13, and the bottom outer wall of the lower mold core 6 is arranged with a limiting rod 14, the limiting rod 14 is embedded in the limiting groove 13, and the outer walls on both sides of the lower mold core 6 are provided with a clamping groove 15, and the inner walls on both sides of the lower mold frame 1 close to the clamping groove 15 are provided with a fixing cavity 16, and the interior of the fixing cavity 16 is provided with a fixing mechanism 17, which includes a threaded cylinder 18, a threaded rod 19, a clamping block 20, a connecting rod 21 and an adjusting knob 22. The limiting rod 14 is embedded in the limiting groove 13 to limit and fix the position of the lower mold core 6 to avoid deviation resulting in reduced molding accuracy. The lower mold core 6 can be clamped and fixed by the fixing mechanism 17.

[0027] The inner wall of one side of the fixed cavity 16 is connected with a threaded cylinder 18 through a bearing, and the inner wall of one end of the threaded cylinder 18 is threadedly connected with a threaded rod 19, and the end of the threaded rod 19 away from the threaded cylinder 18 is connected with a clamping block 20, which is embedded in the clamping groove 15, and both sides of the clamping block 20 are connected with connecting rods 21, and the connecting rods 21 are also embedded in the fixed cavity 16. The outer walls of both sides of the lower mold frame 1 are provided with adjusting knobs 22, and the output ends of the two sets of adjusting knobs 22 are connected to the corresponding threaded cylinders 18. The adjusting knobs 22 are twisted to drive the threaded cylinder 18 to rotate synchronously, and the rotation of the threaded cylinder 18 drives The threaded rod 19 performs translational movement, and the threaded rod 19 drives the block 20 to perform synchronous translational movement. The split structure of the lower mold core 6 and the lower mold frame 1 enables the lower mold core 6 to be replaced alone after wear. When the worn lower mold core 6 needs to be replaced, the threaded barrel 18 can be driven to rotate synchronously by twisting the adjusting knob 22. The rotation of the threaded barrel 18 drives the threaded rod 19 to perform translational movement outward. The threaded rod 19 drives the block 20 to translate and move out of the slot 15, thereby canceling the fixation of the lower mold core 6, thereby facilitating the replacement of the lower mold core 6.

[0028] The bottom inner wall of the lower mold core 6 is arranged with ejection grooves 23, and a demoulding ejector block 24 is embedded in the ejection groove 23. The outer diameter of the demoulding ejector block 24 matches the inner diameter of the ejection groove 23. The bottom centers of multiple groups of demoulding ejector blocks 24 are connected with ejector pins 25. The end of the ejector pin 25 away from the demoulding ejector block 24 passes through the lower mold core 6 and is connected to the lower mold frame 1 with a connecting plate 26. The ejector pin 25 and the connecting plate 26 are fixedly connected to each other by bolts. The ejection groove 23 plays a limiting role. The demoulding ejector block 24 can be ejected synchronously by the movement of the ejector pin 25, so as to facilitate the ejection work after the pole ear is stamped and formed, and avoid the pole ear being embedded in the inner wall of the lower mold core 6 and difficult to remove. The connecting plate 26 plays a connecting role. The bolts between the connecting plate 26 and the ejector pin 25 can be disassembled by tools to facilitate the removal of the lower mold core 6.

[0029] The bottom of the lower mold frame 1 is connected to the base frame 27 by bolts, and the connecting plate 26 is arranged inside the base frame 27. The bottom inner wall of the base frame 27 is arranged and connected with an electric push rod 28. The top output end of the electric push rod 28 is connected to the connecting plate 26. The electric push rod 28 pushes and drives the connecting plate 26 to perform translational movement. The movement of the connecting plate 26 drives the ejector pin 25 to perform synchronous movement. The lifting of the ejector pin 25 pushes the demoulding ejector block 24 to perform ejection and contraction movement. The base frame 27 plays a supporting and fixing role. After the pole ear is stamped and formed, the connecting plate 26 can be pushed and driven by the electric push rod 28 to perform an upward movement. The movement of the connecting plate 26 drives the ejector pin 25 to perform a synchronous movement. The lifting of the ejector pin 25 pushes the demoulding ejector block 24 to perform an ejection movement, thereby realizing the ejection of the formed pole ear.

[0030] An annular air duct 29 is arranged inside the lower mold core 6, and the inner wall of the annular air duct 29 is connected with the ejection groove 23. An air outlet nozzle 30 is arranged at the connection point between the ejection groove 23 and the annular air duct 29. The air outlet nozzle 30 is arranged on one side of the bottom edge of the ejection groove 23. The annular air duct 29 plays a connecting role and can connect the air outlet nozzle 30, the air inlet pipe 31 and the exhaust pipe 32 to each other. When the demoulding ejector block 24 is ejected to the outside, the ejection groove 23 is connected with the cavity of the lower mold core 6, so that the air outlet nozzle 30 can perform exhaust work later.

[0031] Air inlet pipes 31 are provided on both sides of the edge of the annular air duct 29. The end of the air inlet pipe 31 away from the annular air duct 29 passes through the lower mold core 6 and is connected to a fan pump 33. The fan pump 33 drives to generate high-speed airflow. The high-speed airflow enters the annular air duct 29 through the air inlet pipe 31 and can be discharged through the exhaust pipe 32. In the process of discharge, the high-speed airflow takes away the heat generated by the lower mold core 6 through continuous stamping and discharges it together, thereby cooling the lower mold core 6 to a certain extent.

[0032] The two sets of annular air ducts 29 are connected to one side of the air inlet pipe 31 with an exhaust pipe 32. The end of the exhaust pipe 32 away from the annular air duct 29 passes through the lower mold core 6 and extends to the outside. The middle of the two sets of exhaust pipes 32 is provided with a solenoid valve 34. The high-speed airflow generated by the fan pump 33 can be discharged through the exhaust pipe 32 to dissipate the heat of the lower mold core 6. At the same time, the electric push rod 28 starts to push the ejector pin 25 to rise and push the demoulding ejector block 24 to eject, so that the ejection groove 23 is connected to the cavity of the lower mold core 6. At this time, the solenoid valve is controlled by the controller 35 34 is closed, and the high-speed airflow generated by the fan pump 33 is transmitted through the annular air duct 29 and then ejected through the air outlet nozzle 30. The high-speed airflow ejected from the air outlet nozzle 30 can blow the inner wall of the lower mold core 6, and the debris and dust residue generated by stamping the pole ear are blown to the outside of the lower mold core 6 through the high-speed airflow, thereby avoiding the debris and dust generated by stamping the pole ear from remaining in the lower mold core 6, thereby reducing the stamping effect. Therefore, the inner wall of the lower mold core 6 can be cleaned while the mold is cooled, thereby improving the service life of the mold structure.

[0033] A controller 35 is provided on one side of the upper surface of the base frame 27. The controller 35 is connected to the electric push rod 28 and the solenoid valve 34 through electric wires. The controller 35 plays a control role. When the electric push rod 28 is lifted up after the stamping is completed, the lifting signal is transmitted to the controller 35. After receiving the signal, the controller 35 controls the solenoid valve 34 to close and block the airflow through the exhaust pipe 32 so that it flows to the air outlet nozzle 30, so as to facilitate the cleaning of the lower mold core 6.

[0034] The implementation principle of the embodiment of the present application is as follows: first, the tab to be stamped is placed on the surface of the lower mold core 6, and the battery tab can be stamped by cooperating with the lower mold frame 1 and the upper mold frame 2. The guide column 3 and the guide groove 4 play a limiting role. The top of the upper mold frame 2 can be connected to the stamping cylinder for driving, and the support spring 5 plays a rebound role so that the stamping cylinder can be lifted after the tab is stamped. The rebound force of the support spring 5 can assist the upper mold frame 2 and the upper mold 7 to return upward, and at the same time, the upper mold 7 and the lower mold core When the tab is stamped, the top plate 12 on the surface of the top block 9 contacts the tab and shrinks into the movable groove 8, the ejection spring 11 shrinks under pressure, and the top plate 12 matches the movable groove 8 so that the surface of the upper die 7 is flat after shrinkage. When the upper die frame 2 and the upper die 7 are lifted by the cylinder after stamping, the top block 9 and the top plate 12 are ejected from the outside of the upper die 7 and abut against the tab by the rebound force of the support spring 5, so that the tab is separated from the upper die 7, avoiding the tab being attached to the tab after the tab is stamped. The upper die 7 is accompanied by an upward movement, and the position of the lower die core 6 is limited and fixed by a limiting rod 14 embedded in the limiting groove 13 to avoid deviation causing a decrease in die pressing precision. The lower die core 6 can be clamped and fixed by a fixing mechanism 17. The lower die core 6 and the lower die frame 1 adopt a split structure so that the lower die core 6 can be replaced alone after wear. When the worn lower die core 6 needs to be replaced, the threaded barrel 18 can be driven to rotate synchronously by twisting the adjusting knob 22, and the threaded barrel 18 can be driven to rotate synchronously. The rotation of the cylinder 18 drives the threaded rod 19 to move outward in translation. The threaded rod 19 moves in translation and drives the clamping block 20 to move out of the clamping slot 15, thereby canceling the fixation of the lower mold core 6, so as to facilitate the replacement of the lower mold core 6. After the tab is stamped, the electric push rod 28 can be used to drive the connecting plate 26 to move upward. The movement of the connecting plate 26 drives the ejector pin 25 to move synchronously. The ejector pin 25 rises and drives the demoulding ejector block 24 to eject, thereby realizing the ejection of the formed tab. The fan pump 33 drives to generate a high-speed airflow, which enters the annular air duct 29 through the air inlet pipe 31 and can be discharged through the exhaust pipe 32. In the process of discharge, the high-speed airflow takes away the heat generated by the lower mold core 6 through continuous stamping and discharges it together, thereby cooling the lower mold core 6 to a certain extent. The high-speed airflow generated by the fan pump 33 can be discharged through the exhaust pipe 32 to facilitate the heat dissipation of the lower mold core 6. After the electric push rod 28 starts to push the ejector pin 25 to rise and push the demoulding ejector block 24 to eject, the ejection groove 23 is connected with the cavity of the lower mold core 6. At this time, it is lifted up. The signal is transmitted to the controller 35. After receiving the signal, the controller 35 controls the solenoid valve 34 to close and block the airflow through the exhaust pipe 32 so that it flows to the air outlet nozzle 30 for spraying. The high-speed airflow sprayed from the air outlet nozzle 30 can blow the inner wall of the lower mold core 6, and the debris and dust residue generated by stamping the pole ear are blown to the outside of the lower mold core 6 through the high-speed airflow, thereby avoiding the debris and dust generated by stamping the pole ear from remaining in the lower mold core 6 and reducing the stamping effect. Therefore, the inner wall of the lower mold core 6 can be cleaned while the mold is cooled, thereby improving the service life of the mold structure.

[0035] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A tab mold structure, comprising a lower mold frame (1), characterized in that: An upper mold frame (2) is arranged on the top of the lower mold frame (1), guide columns (3) are arranged at the edge of the upper surface of the lower mold frame (1), and guide grooves (4) are arranged at the bottom of the upper mold frame (2). The guide columns (3) match the guide grooves (4), and the guide columns (3) are embedded in the guide grooves (4). The outer wall of the guide columns (3) is sleeved with a support spring (5), and the top of the support spring (5) is in contact with the upper mold frame (2). A lower mold core (6) is embedded at the center of the top of the lower mold frame (1), and an upper mold (7) is arranged at the center of the top of the upper mold frame (2). The upper mold (7) Matching with the lower mold core (6), both sides of the bottom of the upper mold (7) are provided with movable grooves (8), the interior of the movable groove (8) is embedded with a top block (9), the top of the top block (9) is connected with a top rod (10), and the top rod (10) is also embedded in the interior of the movable groove (8), and both sides of the end of the top block (9) close to the movable groove (8) are connected with ejection springs (11), and the end of the ejection spring (11) away from the top block (9) is in contact with the inner wall of the movable groove (8), and the bottom end of the top block (9) is connected with a top plate (12), and the outer diameter of the top plate (12) matches the inner diameter of the movable groove (8).

2. The tab mold structure according to claim 1, characterized in that: The inner wall of the lower mold frame (1) is arranged with a limit groove (13), the bottom outer wall of the lower mold core (6) is arranged with a limit rod (14), the limit rod (14) is embedded in the limit groove (13), the outer walls on both sides of the lower mold core (6) are provided with a clamping groove (15), the inner walls on both sides of the lower mold frame (1) close to the clamping groove (15) are provided with a fixing cavity (16), and the fixing cavity (16) is provided with a fixing mechanism (17) inside. The fixing mechanism (17) comprises a threaded barrel (18), a threaded rod (19), a clamping block (20), an adjustment knob (21) and a connecting rod (22).

3. The tab mold structure according to claim 2, characterized in that: The inner wall of one side of the fixed cavity (16) is connected to a threaded cylinder (18) via a bearing, the inner wall of one end of the threaded cylinder (18) is threadedly connected to a threaded rod (19), the end of the threaded rod (19) away from the threaded cylinder (18) is connected to a clamping block (20), the clamping block (20) is embedded in the clamping groove (15), both sides of the clamping block (20) are connected to connecting rods (21), the connecting rods (21) are also embedded in the fixed cavity (16), and the outer walls of both sides of the lower mold frame (1) are provided with adjustment knobs (22), the output ends of the two groups of the adjustment knobs (22) are connected to the corresponding threaded cylinders (18), twisting the adjustment knobs (22) drives the threaded cylinder (18) to rotate synchronously, the rotation of the threaded cylinder (18) drives the threaded rod (19) to move in translation, and the translation of the threaded rod (19) drives the clamping block (20) to move in synchronous translation.

4. The tab mold structure according to claim 1, characterized in that: The bottom inner wall of the lower mold core (6) is provided with ejector grooves (23), and a demoulding ejector block (24) is embedded inside the ejector groove (23). The outer diameter of the demoulding ejector block (24) matches the inner diameter of the ejector groove (23). The bottom centers of multiple groups of the demoulding ejector blocks (24) are connected with ejector pins (25). One end of the ejector pin (25) away from the demoulding ejector block (24) passes through the lower mold core (6) and is connected to a connecting plate (26) of the lower mold frame (1). The ejector pin (25) and the connecting plate (26) are fixedly connected to each other by bolts.

5. The tab mold structure according to claim 4, characterized in that: The bottom of the lower mold frame (1) is connected to a base frame (27) by bolts, the connecting plate (26) is arranged inside the base frame (27), the inner wall of the bottom of the base frame (27) is connected to an electric push rod (28), the top output end of the electric push rod (28) is connected to the connecting plate (26), the electric push rod (28) pushes and drives the connecting plate (26) to perform translational movement, the connecting plate (26) moves and drives the ejector pin (25) to perform synchronous movement, and the ejector pin (25) moves up and down to push the demoulding ejector block (24) to perform ejection and contraction movement.

6. The tab mold structure according to claim 5, characterized in that: An annular air duct (29) is arranged inside the lower mold core (6), the inner wall of the annular air duct (29) is connected to the ejection groove (23), and an air outlet nozzle (30) is arranged at the connection point between the ejection groove (23) and the annular air duct (29), and the air outlet nozzle (30) is arranged on one side of the bottom edge of the ejection groove (23).

7. The tab mold structure according to claim 6, characterized in that: Air inlet pipes (31) are provided on both sides of the edge of the annular air duct (29); one end of the air inlet pipe (31) away from the annular air duct (29) passes through the lower mold core (6) and is connected to a fan pump (33).

8. The tab mold structure according to claim 7, characterized in that: The two groups of annular air ducts (29) are both connected to an exhaust pipe (32) on one side adjacent to the air inlet pipe (31); one end of the exhaust pipe (32) away from the annular air duct (29) passes through the lower mold core (6) and extends to the outside; and a solenoid valve (34) is provided in the middle of the two groups of exhaust pipes (32).

9. The tab mold structure according to claim 8, characterized in that: A controller (35) is provided on one side of the upper surface of the base frame (27), and the controller (35) is connected to the electric push rod (28) and the solenoid valve (34) via electric wires.

Images