A high-precision molding die and molding method for forming pole posts

Abstract

This invention discloses a high-precision forming mold for electrode posts. The upper mold includes an upper support, an upper pad, a limiting plate, and a stripper plate, which are sequentially fixed together from top to bottom. The lower mold includes a base, a lower pad, and a die plate, which are sequentially fixed together from bottom to top. A punching mechanism, a forging mechanism, and a blanking mechanism are sequentially arranged between the upper and lower molds from left to right. The punching mechanism includes a die insert, a pad fixed in the limiting plate, and a guide insert fixed in the stripper plate. The guide insert has a stepped hole I, and a clamping insert I is slidably installed in the small hole of the stepped hole I. The die insert is fixed in the die plate and is located directly below the punch. A positioning cavity is formed on the top of the die insert, and the positioning cavity is coaxially arranged with the punch. The upsetting mechanism includes a fixing block, a through hole in the limiting plate, and an upsetting insert fixed in the stripper plate. The beneficial effects of this invention are: greatly improving the production efficiency and quality of electrode posts.

Description

Technical Field

[0001] This invention relates to the technical field of electrode forming, and in particular to a high-precision forming mold and forming method for forming electrodes. Background Technology

[0002] The structure of a certain pole is as follows Figure 1 As shown, it includes a cylinder with a thickness of 2cm. A blind hole 1 is provided on the top surface of the cylinder and at its center. An annular shoulder 2 is provided on the cylinder along the circumference of the blind hole 1. The annular shoulder 2 is coaxially arranged with the blind hole 1. This type of pole is used to be installed in a cylindrical lithium battery.

[0003] The method of forming poles from blanks in the workshop is to machine an annular shoulder 2 on the outer cylindrical surface of the blank on a lathe, and then transfer the semi-finished blank to the drilling station of the drilling machine. The drill bit of the drilling machine drills a blind hole 1 on the top surface of the semi-finished blank, thus finally processing the pole. Repeating this operation, poles can be produced in batches.

[0004] However, while this method of forming electrode posts can produce them, it still has the following technical drawbacks: I. The machining time for the annular shoulder 2 on the blank is long, significantly reducing the production efficiency of the electrode posts. II. When the semi-finished blank with the annular shoulder 2 is transferred to the drilling station, it needs to be fixed in place again. This inevitably introduces positioning errors, resulting in a difference in concentricity between the machined blind hole 1 and the annular shoulder 2, thus greatly reducing the production quality of the electrode posts and failing to meet the demands of high-end customers. Therefore, there is an urgent need for a forming mold that can significantly improve both the production efficiency and quality of electrode posts. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a high-precision mold and molding method for forming electrode posts that is compact in structure, greatly improves the production efficiency and quality of electrode posts.

[0006] The objective of this invention is achieved through the following technical solution: a high-precision forming die for a pole piece, comprising an upper die and a lower die, wherein the upper die comprises an upper support, an upper pad, a limiting plate and a stripping plate fixedly mounted together from top to bottom, and the lower die comprises a base, a lower pad and a concave template fixedly mounted together from bottom to top, wherein a punching mechanism, a forging mechanism and a blanking mechanism are arranged sequentially from left to right between the upper die and the lower die; The punching mechanism includes a die insert, a pad fixed in the limiting plate, and a guide insert fixed in the unloading plate. A stepped hole I is provided in the guide insert. A pressing insert I is slidably installed in the small hole of the stepped hole I. A hanging platform I is fixed on the outer cylindrical surface of the upper end of the pressing insert I. The hanging platform I is suspended on the step of the stepped hole I. The pad block is fixedly provided with a punching punch, which extends into the insert I and is fixedly provided with a punch at the extended end; the die insert is fixedly provided in the die template and is located directly below the punch, and the top of the die insert is provided with a positioning cavity, which is coaxially provided with the punch. The upsetting mechanism includes a fixed block, a through hole on the limiting plate, and an upsetting insert fixed in the unloading plate. The lower end of the upsetting insert extends below the unloading plate. An annular groove is formed on the bottom surface of the upsetting insert. A stepped hole II communicating with the annular groove is formed in the upsetting insert. A clamping insert II extending below the upsetting insert is slidably installed in the small hole of the stepped hole II. A hanging platform II is fixed on the outer cylindrical surface of the upper end of the clamping insert II. The hanging platform II is suspended on the shoulder of the stepped hole II. A fixing plate is fixedly provided on the top of the pressing insert II. A stepped hole III is opened on the top surface of the pressing insert II. A positioning rod is slidably installed in the small hole of the stepped hole III. The lower end of the positioning rod extends below the pressing insert II, and a positioning head is fixed on the extended end. A spring is fixed on the upper end of the positioning rod. The top of the spring is fixed on the fixing plate. The fixing block is fixed in the concave template and is located directly below the positioning head. The upsetting insert, the pressing insert II, the positioning rod and the annular groove are coaxially arranged.

[0007] The upper pad, the limiting plate, and the unloading plate are detachably connected by screws.

[0008] The blanking mechanism includes a blanking insert and a blanking punch fixed in the limiting plate. The blanking punch extends below the unloading plate. The blanking insert is fixed in the concave plate, and the blanking hole of the blanking insert is located directly below the blanking punch.

[0009] A material drop hole is provided between the base and the lower pad, and the material drop hole is connected to the material drop insert.

[0010] The through hole and the stepped hole II are coaxially arranged.

[0011] A movable plate is fixed to the top of the positioning rod, and the lower end of the spring is fixed to the top surface of the movable plate. Under the action of the spring force, the movable plate presses against the shoulder of the stepped hole III.

[0012] The mounting platform I is distributed along the circumference of the clamping insert I, and the mounting platform II is distributed along the circumference of the clamping insert II.

[0013] A method for forming a high-precision molded electrode post, comprising the following steps: S1. Securely connect the upper support to the stamping head of the stamping die; S2. Forming a blind hole in the middle of the blank, the specific operation steps are as follows: S21. Place the blank into the positioning cavity of the die insert, at which point the blank and the punch are just coaxial. S22. Control the stamping head of the stamping die to move downward. The stamping head drives the upper support, upper pad, limit plate, stripper plate, guide insert, clamping insert I and punch to move downward synchronously. The bottom surface of clamping insert I presses on the top surface of the blank first. Then, clamping insert I moves upward along the large hole of stepped hole I. When clamping insert I is blocked by the pad, clamping insert I stops moving. At this time, the blank is fixed between the die insert and clamping insert I. Then, the punch moves downward relative to the stationary clamping insert I. The punch drives the punch to penetrate the clamping insert I and punch in the center of the blank, thereby forming a blind hole in the center of the blank, and thus obtaining a semi-finished blank. S23. After forming, the worker controls the stamping head of the stamping die to move upward. The stamping head drives the upper support, upper pad, limit plate, stripper plate and guide insert to reset upward, and then drives the clamping insert I and the punching punch to reset. S3. Forming an annular shoulder on the semi-finished blank, the specific operation steps are as follows: S31. The worker transfers the semi-finished blank to the top surface of the fixed block to initially position the semi-finished blank. S32. The worker controls the stamping head of the stamping die to move downwards. The stamping head drives the upper support, upper pad, limit plate, stripper plate, clamping insert II, positioning rod and upsetting insert to move downwards synchronously. The positioning head of the positioning rod first embeds into the blind hole of the semi-finished blank. After the positioning head and the blind hole are engaged, the semi-finished blank is just straightened. At this time, the upsetting insert, the annular groove and the semi-finished blank are just coaxial. Then the bottom surface of the clamping insert II presses on the top surface of the semi-finished blank. Then the clamping insert II moves upwards along the large hole of the stepped hole II and drives the fixing plate to move upwards synchronously. When the fixing plate is restricted by the bottom of the through hole, the clamping insert II stops moving. At this time, the semi-finished blank is fixed between the clamping insert II and the fixing block. Then the upsetting insert moves downwards relative to the stationary clamping insert II. The annular groove of the upsetting insert presses onto the semi-finished blank, thereby forming an annular shoulder on the semi-finished blank. S33. After forming, the worker controls the stamping head of the stamping die to move upward. The stamping head drives the upper support, upper pad, limit plate, stripper plate and upsetting insert to reset upward in sync, and then drives the clamping insert II and positioning rod to reset. S4. The specific steps for forming the finished electrode post are as follows: S45. The worker positions the semi-finished blank with an annular shoulder onto the top surface of the blanking insert. S46. The operator controls the stamping head of the stamping die to move downward. The stamping head drives the upper support, upper pad, limit plate, stripper plate and blanking punch to move downward synchronously. When the blanking punch matches the blanking hole of the blanking insert, the outer edge of the semi-finished blank can be cut off, and the finished pole enters the receiving basket through the blanking hole, thus forming the required finished pole. S5. Repeat steps S2 to S4 multiple times to continuously form multiple finished pole pieces from the blank.

[0014] The present invention has the following advantages: compact structure, greatly improved electrode production efficiency, and greatly improved electrode production quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the pole structure; Figure 2 This is a schematic diagram of the structure of the present invention; Figure 3 for Figure 2 A magnified view of part A; Figure 4 This is a schematic diagram of the structure of the clamping insert I; Figure 5 This is a schematic diagram of the punching die structure; Figure 6 This is a schematic diagram of the structure of the die insert; Figure 7 A schematic diagram of the guide insert structure; Figure 8 This is a schematic diagram of the structure of clamping insert II; Figure 9 This is a schematic diagram of the positioning rod. Figure 10 This is a schematic diagram of the structure of an upsetting insert; Figure 11 This is a schematic diagram of the present invention in the form of a blind hole, an annular shoulder, and a finished pole post; Figure 12 for Figure 11 A magnified view of part B; Figure 13 A schematic diagram of the structure for forming a semi-finished blank; In the diagram, 1-blind hole, 2-annular shoulder, 3-upper support, 4-upper pad, 5-limiting plate, 6-unloading plate, 7-base, 8-lower pad, 9-concave template, 13-concave die insert, 14-pad, 15-guide insert, 16-step hole I, 17-clamping insert I, 18-hanging platform I, 19-punching punch, 20-punch, 21-positioning cavity, 22-fixing block, 23-through hole, 24-upsetting insert, 25-annular groove, 26-step hole II, 27-clamping insert II, 28-hanging platform II, 29-fixing plate, 30-step hole III, 31-positioning rod, 32-positioning head, 33-spring, 35-blanking punch, 36-blanking insert, 37-blanking hole, 38-moving plate, 39-blank, 40-semi-finished blank. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings. The scope of protection of the present invention is not limited to the following description: like Figures 2-10 As shown, a high-precision forming die for an electrode post includes an upper die and a lower die. The upper die includes an upper support 3, an upper pad 4, a limiting plate 5, and a stripper plate 6, which are sequentially fixed together from top to bottom. The upper pad 4, the limiting plate 5, and the stripper plate 6 are detachably connected by screws. The lower die includes a base 7, a lower pad 8, and a concave die 9, which are sequentially fixed together from bottom to top. A punching mechanism, a forging mechanism, and a blanking mechanism are sequentially arranged between the upper and lower dies from left to right. The punching mechanism includes a concave die. Insert 13, pad 14 fixed in the limiting plate 5, guide insert 15 fixed in the unloading plate 6, guide insert 15 has a stepped hole I16, clamping insert I17 is slidably installed in the small hole of stepped hole I16, hanging platform I18 is fixed on the outer cylindrical surface of the upper end of clamping insert I17, hanging platform I18 is suspended on the step of stepped hole I16; the hanging platform I18 is distributed along the circumference of clamping insert I17, and the hanging platform II28 is distributed along the circumference of clamping insert II27. like Figures 2-10As shown, a punching punch 19 is fixedly mounted on the pad block 14. The punching punch 19 extends into the insert I17, and a punch 20 is fixedly mounted on the extended end. The die insert 13 is fixedly mounted in the die plate 9 and is located directly below the punch 20. A positioning cavity 21 is opened on the top of the die insert 13, and the positioning cavity 21 is coaxially arranged with the punch 20. The upsetting mechanism includes a fixing block 22, a through hole 23 opened on the limiting plate 5, and an upsetting insert fixed in the unloading plate 6. Part 24, the lower end of the upsetting insert 24 extends below the unloading plate 6, an annular groove 25 is formed on the bottom surface of the upsetting insert 24, a stepped hole II26 communicating with the annular groove 25 is formed in the upsetting insert 24, the through hole 23 is coaxially arranged with the stepped hole II26, a clamping insert II27 extending below the upsetting insert 24 is slidably installed in the small hole of the stepped hole II26, and a hanging platform II28 is fixed on the outer cylindrical surface of the upper end of the clamping insert II27. The hanging platform II28 is suspended on the shoulder of the stepped hole II26; the top of the clamping insert II27 is fixedly provided with a fixing plate 29, and a stepped hole III30 is opened on the top surface of the clamping insert II27. A positioning rod 31 is slidably installed in the small hole of the stepped hole III30. The lower end of the positioning rod 31 extends below the clamping insert II27, and a positioning head 32 is fixed on the extended end. A spring 33 is fixed on the upper end of the positioning rod 31. The top of the spring 33 is fixed on the fixing plate 29. The fixing block 22 is fixed in the concave template 9 and is located directly below the positioning head 32. The upsetting insert 24, the clamping insert II27, the positioning rod 31 and the annular groove 25 are coaxially arranged. A movable plate 38 is fixed on the top of the positioning rod 31. The lower end of the spring 33 is fixed on the top surface of the movable plate 38. Under the elastic force of the spring 33, the movable plate 38 presses against the shoulder of the stepped hole III30.

[0017] The blanking mechanism includes a blanking insert 36 and a blanking punch 35 fixed within the limiting plate 5. The blanking punch 35 extends below the unloading plate 6. The blanking insert 36 is fixed within the concave plate 9, and the blanking hole of the blanking insert 36 is located directly below the blanking punch 35. A blanking hole 37 is provided between the base 7 and the lower pad 8, and the blanking hole 37 communicates with the blanking insert 36.

[0018] A method for forming a high-precision molded electrode post, comprising the following steps: S1. Fix the upper support 3 to the stamping head of the stamping die; S2. Form blind hole 1 in the middle of the blank. The specific operation steps are as follows: S21. Place the blank 39 into the positioning cavity 21 of the die insert 13. At this time, the blank 39 and the punch 20 are just coaxial. S22. Control the downward movement of the stamping head of the stamping die. The stamping head drives the upper support 3, upper pad 4, limit plate 5, stripper plate 6, guide insert 15, clamping insert I17, and punching punch 19 to move downward synchronously. The bottom surface of the clamping insert I17 first presses against the top surface of the blank 39, and then the clamping insert I17 moves upward along the large hole of the stepped hole I16. When the clamping insert I17 is blocked by the pad 14, the clamping insert I17 stops moving. At this time, the blank 39 is fixed between the die insert 13 and the clamping insert I17. Subsequently, the punching punch 19 moves downward relative to the stationary clamping insert I17. The punching punch 19 drives the punch 20 to penetrate the clamping insert I17 and punch in the center of the blank 39, thereby forming a blind hole 1 in the center of the blank 39. Figures 11-12 As shown, a semi-finished blank 40 is obtained, the structure of which is as follows: Figure 13 As shown; S23. After forming, the worker controls the stamping head of the stamping die to move upward. The stamping head drives the upper support 3, upper pad 4, limit plate 5, stripper plate 6 and guide insert 15 to reset upward, and then drives the clamping insert I17 and punching punch 19 to reset. S3. Forming the annular shoulder 2 on the semi-finished blank 40, the specific operation steps are as follows: S31. The worker transfers the semi-finished blank 40 to the top surface of the fixing block 22 to initially position the semi-finished blank 40. S32. The worker controls the downward movement of the stamping head of the stamping die. The stamping head drives the upper support 3, upper pad 4, limit plate 5, stripper plate 6, clamping insert II 27, positioning rod 31, and upsetting insert 24 to move downwards simultaneously. The positioning head 32 of the positioning rod 31 first inserts into the blind hole 1 of the semi-finished blank 40. After the positioning head 32 and the blind hole 1 are engaged, the semi-finished blank 40 is just aligned. At this time, the upsetting insert 24, the annular groove 25, and the semi-finished blank are just coaxial. Then, the bottom surface of the clamping insert II 27 presses against the top of the semi-finished blank 40. On the surface, the clamping insert II27 moves upward along the large hole of the stepped hole II26, and drives the fixing plate 29 to move upward synchronously. When the fixing plate 29 is restricted by the bottom of the through hole 23, the clamping insert II27 stops moving. At this time, the semi-finished blank 40 is fixed between the clamping insert II27 and the fixing block 22. Then, the upsetting insert 24 moves downward relative to the stationary clamping insert II27. The annular groove 25 of the upsetting insert 24 presses onto the semi-finished blank 40, thereby forming an annular shoulder 2 on the semi-finished blank 40, such as Figures 11-12 As shown; S33. After forming, the worker controls the stamping head of the stamping die to move upward. The stamping head drives the upper support 3, upper pad 4, limit plate 5, unloading plate 6 and upsetting insert 24 to reset upward in sync, and then drives the pressing insert II 27 and positioning rod 31 to reset. As can be seen in step S3, the annular groove 25 on the upsetting insert 24 is directly pressed onto the semi-finished blank, which can quickly form the annular shoulder 2. Compared with forming on a lathe in the workshop, the forming time of the annular shoulder 2 is greatly shortened, thereby greatly improving the production efficiency of the finished pole column.

[0019] S4. The specific steps for forming the finished electrode post are as follows: S41. The worker positions the semi-finished blank with the annular shoulder 2 onto the top surface of the blanking insert 36. S42. The operator controls the stamping head of the stamping die to move downward. The stamping head drives the upper support 3, upper pad 4, limit plate 5, stripper plate 6 and blanking punch 35 to move downward synchronously. When the blanking punch 35 is engaged with the blanking hole of the blanking insert 36, the outer edge of the semi-finished blank can be cut off, and the finished pole enters the receiving basket through the blanking hole 37, thereby forming the required finished pole. As can be seen from steps S2 to S4, after the blind hole 1 is formed, the positioning head 32 is inserted into the blind hole 1 of the semi-finished blank 40 to guide the semi-finished blank 40. This ensures that the annular groove 25 and the semi-finished blank are concentric before upsetting, thereby ensuring that the annular shoulder 2 formed by upsetting is concentric with the blind hole 1. Compared with the forming method used in the workshop, there is no positioning error, which greatly improves the production quality of the finished pole.

[0020] S5. Repeat steps S2 to S4 multiple times to continuously form multiple finished pole pieces from the blank.

[0021] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-precision forming die for a pole piece, comprising an upper die and a lower die, wherein the upper die comprises an upper support (3), an upper pad (4), a limiting plate (5), and a stripper plate (6) fixedly mounted together from top to bottom, and the lower die comprises a base (7), a lower pad (8), and a concave template (9) fixedly mounted together from bottom to top, characterized in that: A punching mechanism, an upsetting mechanism, and a blanking mechanism are sequentially arranged between the upper and lower dies from left to right; The punching mechanism includes a die insert (13), a pad (14) fixed in the limiting plate (5), and a guide insert (15) fixed in the unloading plate (6). A stepped hole I (16) is opened in the guide insert (15). A pressing insert I (17) is slidably installed in the small hole of the stepped hole I (16). A hanging platform I (18) is fixed on the outer column surface of the upper end of the pressing insert I (17). The hanging platform I (18) is suspended on the step of the stepped hole I (16). The pad block (14) is fixedly provided with a punching punch (19), which extends into the insert I (17) and is fixedly provided with a punch (20) at the extended end; the die insert (13) is fixedly provided in the die template (9) and is located directly below the punch (20); the top of the die insert (13) is provided with a positioning cavity (21), which is coaxially provided with the punch (20); The upsetting mechanism includes a fixed block (22), a through hole (23) opened on the limiting plate (5), and an upsetting insert (24) fixed in the unloading plate (6). The lower end of the upsetting insert (24) extends below the unloading plate (6). An annular groove (25) is opened on the bottom surface of the upsetting insert (24). A stepped hole II (26) communicating with the annular groove (25) is opened in the upsetting insert (24). A pressing insert II (27) extending below the upsetting insert (24) is slidably installed in the small hole of the stepped hole II (26). A hanging platform II (28) is fixed on the outer column surface of the upper end of the pressing insert II (27). The hanging platform II (28) is suspended on the shoulder of the stepped hole II (26). The top of the pressing insert II (27) is fixedly provided with a fixing plate (29). A stepped hole III (30) is opened on the top surface of the pressing insert II (27). A positioning rod (31) is slidably installed in the small hole of the stepped hole III (30). The lower end of the positioning rod (31) extends below the pressing insert II (27), and a positioning head (32) is fixed on the extended end. A spring (33) is fixed on the upper end of the positioning rod (31). The top of the spring (33) is fixed on the fixing plate (29). The fixing block (22) is fixed in the concave template (9). The fixing block (22) is located directly below the positioning head (32). The upsetting insert (24), the pressing insert II (27), the positioning rod (31), and the annular groove (25) are coaxially arranged.

2. The molding die for a high-precision molded pole according to claim 1, characterized in that: The upper pad (4), the limiting plate (5), and the unloading plate (6) are detachably connected by screws.

3. The molding die for a high-precision molded pole according to claim 2, characterized in that: The blanking mechanism includes a blanking insert (36) and a blanking punch (35) fixed in the limiting plate (5). The blanking punch (35) extends below the unloading plate (6). The blanking insert (36) is fixed in the concave plate (9). The blanking hole of the blanking insert (36) is located directly below the blanking punch (35).

4. The molding die for a high-precision forming pole according to claim 3, characterized in that: A material drop hole (37) is provided between the base (7) and the lower pad (8), and the material drop hole (37) is connected to the material drop insert (36).

5. The molding die for a high-precision molded pole according to claim 4, characterized in that: The through hole (23) is coaxially arranged with the stepped hole II (26).

6. The molding die for a high-precision molded pole according to claim 5, characterized in that: The top of the positioning rod (31) is fixed with a movable plate (38), and the lower end of the spring (33) is fixed on the top surface of the movable plate (38). Under the elastic force of the spring (33), the movable plate (38) presses against the shoulder of the stepped hole III (30).

7. The molding die for a high-precision forming pole according to claim 6, characterized in that: The mounting platform I (18) is distributed around the circumference of the clamping insert I (17), and the mounting platform II (28) is distributed around the circumference of the clamping insert II (27).

8. A method for forming a high-precision molded electrode post, using the molding die for the high-precision molded electrode post as described in claim 7, characterized in that: It includes the following steps: S1. Fix the upper support (3) to the stamping head of the stamping die; S2. Form a blind hole (1) in the middle of the blank. The specific operation steps are as follows: S21. Place the blank (39) into the positioning cavity (21) of the die insert (13). At this time, the blank (39) and the punch (20) are just coaxial. S22. Control the stamping head of the stamping die to move downward. The stamping head drives the upper support (3), upper pad (4), limit plate (5), stripper plate (6), guide insert (15), clamping insert I (17) and punching punch (19) to move downward synchronously. The bottom surface of clamping insert I (17) first presses on the top surface of blank (39), and then clamping insert I (17) moves upward along the large hole of stepped hole I (16). When clamping insert I (17) is pressed by pad (14) After being blocked, the clamping insert I (17) stops moving. At this time, the blank (39) is fixed between the die insert (13) and the clamping insert I (17). Then the punching punch (19) moves downward relative to the stationary clamping insert I (17). The punching punch (19) drives the punch (20) to penetrate the clamping insert I (17) and punch in the center of the blank (39), thereby forming a blind hole (1) in the center of the blank (39) and obtaining a semi-finished blank (40). S23. After forming, the worker controls the stamping head of the stamping die to move upward. The stamping head drives the upper support (3), upper pad (4), limit plate (5), stripper plate (6) and guide insert (15) to reset upward, and then drives the clamping insert I (17) and punching punch (19) to reset. S3. Forming an annular shoulder (2) on the semi-finished blank (40), the specific operation steps are as follows: S31. The worker transfers the semi-finished blank (40) to the top surface of the fixing block (22) to initially position the semi-finished blank (40); S32. The worker controls the stamping head of the stamping die to move downwards. The stamping head drives the upper support (3), upper pad (4), limit plate (5), stripper plate (6), clamping insert II (27), positioning rod (31) and upsetting insert (24) to move downwards simultaneously. The positioning head (32) of the positioning rod (31) first embeds into the blind hole (1) of the semi-finished blank (40). After the positioning head (32) and the blind hole (1) are engaged, the semi-finished blank (40) is just aligned. At this time, the upsetting insert (24), the annular groove (25) and the semi-finished blank are just coaxial. Then the bottom surface of the clamping insert II (27) presses on the semi-finished blank (40). On the top surface, the clamping insert II (27) moves upward along the large hole of the stepped hole II (26) and drives the fixing plate (29) to move upward synchronously. When the fixing plate (29) is restricted by the bottom of the through hole (23), the clamping insert II (27) stops moving. At this time, the semi-finished blank (40) is fixed between the clamping insert II (27) and the fixing block (22). Then the upsetting insert (24) moves downward relative to the stationary clamping insert II (27). The annular groove (25) of the upsetting insert (24) is pressed onto the semi-finished blank (40), thereby forming an annular shoulder (2) on the semi-finished blank (40). S33. After forming, the worker controls the stamping head of the stamping die to move upward. The stamping head drives the upper support (3), upper pad (4), limit plate (5), unloading plate (6) and upsetting insert (24) to reset upward in sync, and then drives the pressing insert II (27) and positioning rod (31) to reset. S4. The specific steps for forming the finished electrode post are as follows: S41. The worker positions the semi-finished blank with the ring shoulder (2) onto the top surface of the blanking insert (36); S42. The worker controls the stamping head of the stamping die to move downward. The stamping head drives the upper support (3), upper pad (4), limit plate (5), stripper plate (6) and blanking punch (35) to move downward synchronously. When the blanking punch (35) is engaged with the blanking hole of the blanking insert (36), the outer edge of the semi-finished blank can be cut off, and the finished pole enters the receiving basket through the blanking hole (37) to form the required finished pole. S5. Repeat steps S2 to S4 multiple times to continuously form multiple finished pole pieces from the blank.

Images