Stamping device and stamping equipment for battery terminal production

Abstract

The utility model provides a stamping device and stamping equipment for battery terminal production. The stamping device for battery terminal production comprises a first upper punch, a second upper punch and a lower die assembly, the lower die assembly comprises a lower die base, a first insert and a second insert, and the lower die base is provided with a first stamping structure and a second stamping structure which are arranged adjacently. The first stamping structure is provided with a first embedding groove, a step pre-forming arc groove and a first movable channel which are communicated in sequence, the first embedding groove is used for placing a metal block, the groove wall of the step pre-forming arc groove is an arc surface, and the first insert is movably arranged in the first movable channel; the first insert and the inner wall of the first movable channel jointly form a first end groove, and the groove wall of the step pre-forming groove is an arc surface, so that the step of the middle piece formed through first-time stamping is an arc surface to play a guiding role, and the situation that burrs are formed at the step of the terminal due to first-time stamping is avoided.

Description

Technical Field

[0001] The present disclosure relates to the field of stamping equipment, and in particular to a stamping device and stamping equipment for producing battery terminals. Background Art

[0002] Battery terminals are typically mounted on the battery cover and serve as conductive components for electrical connection to the battery cells within the battery housing. Traditionally, battery terminals are manufactured through a die-casting process, where molten metal is placed in a mold and high pressure is applied to form the metal into the desired shape. However, die-casting is a complex process with low production efficiency.

[0003] In order to solve the above problems, the Chinese patent application number CN202020377408.1 discloses a battery terminal stamping die, comprising a base plate, a lower die device is fixedly installed on the upper end of the base plate, the four corners of the lower end of the base plate are fixedly connected to buffer rods, the lower ends of the buffer rods are fixedly connected to shock-absorbing boxes, the lower ends of the shock-absorbing boxes are fixedly connected to a base, the upper left part and the upper right part of the base plate are fixedly connected to support rods, the upper ends of the two support rods are commonly fixedly connected to an upper plate, the upper end of the upper plate is fixedly connected to a driving device, the lower end of the driving device passes through the upper plate, and the left and right ends of the driving device are both sleeved on the outer surface of the support rod, and the lower end of the driving device is fixedly connected to the upper die.

[0004] However, the structural design of the battery pole stamping die has the following problems during use:

[0005] The aforementioned stamping die uses a drive device to drive the upper die downward to close the upper and lower dies, thereby stamping and forming the material. This means that the material is stamped and formed by the stamping die, thereby improving production efficiency. However, for terminals with a stepped structure at the bottom, the aforementioned die is prone to forming burrs at the stepped portion of the terminal during a single stamping operation. These burrs pose a risk of piercing the diaphragm during welding to the battery cell. Furthermore, these burrs can cause poor contact between the terminals, thereby affecting their electrical conductivity.

[0006] Therefore, there is an urgent need for a stamping device that can avoid burrs from being formed during terminal stamping and increase the terminal stamping yield. Utility Model Content

[0007] The purpose of the present disclosure is to overcome the shortcomings of the prior art and provide a stamping device and stamping equipment for battery terminal production that avoids burrs from forming during terminal stamping and improves the terminal stamping yield.

[0008] The purpose of this disclosure is achieved through the following technical solutions:

[0009] A punching device for producing battery terminals, comprising:

[0010] a first upper punch, a second upper punch, and a lower die assembly, wherein the lower die assembly includes a lower die base, a first insert, and a second insert; the lower die base is provided with a first punching structure and a second punching structure arranged adjacent to each other; the first upper punch and the second upper punch are both used to connect to an external driving member to move the first upper punch closer to or away from the first punching structure, and to move the second upper punch closer to or away from the second punching structure;

[0011] The first stamping structure is provided with a first embedding groove, a step pre-formed arc groove and a first movable channel which are sequentially connected. The first embedding groove is used to place a metal block. The groove wall of the step pre-formed arc groove is an arc surface. The first insert is movably arranged in the first movable channel. The first insert and the inner wall of the first movable channel jointly form a first end groove.

[0012] The second stamping structure is provided with a second embedding groove, a step forming groove and a second movable channel which are connected in sequence. The second embedding groove is used to place the metal block after the first stamping. The groove wall of the step forming groove is flat. The second insert is movably arranged in the second movable channel. The second insert and the inner wall of the second movable channel jointly form a second end groove.

[0013] In one embodiment, the depth of the step pre-formed arc groove is less than the depth of the step forming groove.

[0014] In one embodiment, the diameters of the first embedding groove, the step pre-formed arc groove and the first end groove decrease in sequence; and,

[0015] The diameters of the second embedding groove, the step forming groove and the second end groove decrease in sequence.

[0016] In one embodiment, the number of the first stamping structures is two, and the two first stamping structures are adjacent to each other.

[0017] In one embodiment, the number of the second stamping structures is two, and the two second stamping structures are adjacently arranged.

[0018] In one embodiment, the depth of the first end groove is smaller than the depth of the second end groove.

[0019] In one embodiment, the diameter of the first embedding groove is equal to the diameter of the second embedding groove.

[0020] In one embodiment, a diameter of the first end groove is equal to a diameter of the second end groove.

[0021] In one embodiment, the lower mold base is provided with a connecting hole for a connecting piece to pass through.

[0022] A stamping device comprises the stamping device for producing battery terminals described in any of the above embodiments.

[0023] Compared with the prior art, the present disclosure has at least the following advantages:

[0024] In the above-mentioned stamping device for battery terminal production, the metal block is placed in the first embedding groove, and the first upper punch punches the metal block. The metal block extends along the step pre-formed arc groove and the first end groove, so that the metal block is formed into an intermediate piece. Since the groove wall of the step pre-formed groove is an arc surface, the step of the intermediate piece formed by the first stamping is an arc surface; then, the intermediate piece is placed in the second embedding groove, and the second upper punch punches the middle for the second time. The intermediate piece further extends toward the step forming groove and the second end groove, and the arc step pre-formed by the intermediate piece plays a guiding role. During the second stamping, the groove wall of the step forming groove is stamped along the arc step, thereby avoiding the situation where burrs are formed at the step of the terminal due to one stamping, thereby improving the yield of terminal stamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 This is a schematic structural diagram of a punching device for producing battery terminals according to an embodiment;

[0027] Figure 2 for Figure 1 A schematic structural diagram of a lower die assembly of a stamping device for producing battery terminals is shown;

[0028] Figure 3 for Figure 2 The enlarged schematic diagram of the structure of the lower mold assembly at position A is shown;

[0029] Figure 4 for Figure 2 A structural cross-sectional view of the lower mold assembly shown;

[0030] Figure 5 for Figure 2 Another structural schematic diagram of the lower mold assembly shown;

[0031] Figure 6 To adopt Figure 1 The diagram shows a schematic diagram of terminal forming by a stamping device for battery terminal production. DETAILED DESCRIPTION

[0032] To facilitate understanding of the present disclosure, a more comprehensive description of the present disclosure will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present disclosure. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. The terms used herein in the specification of this disclosure are intended only to describe specific embodiments and are not intended to limit this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] The present disclosure provides a punching device for producing battery terminals, comprising a first upper punch, a second upper punch and a lower die assembly, wherein the lower die assembly comprises a lower die base, a first insert and a second insert, wherein the lower die base is provided with a first punching structure and a second punching structure arranged adjacent to each other, wherein the first upper punch and the second upper punch are both used to connect with an external driving member so as to make the first upper punch approach or move away from the first punching structure, and make the second upper punch approach or move away from the second punching structure; the first punching structure is provided with a first embedding groove, a step pre-formed arc groove and a first movable channel which are connected in sequence, and the first embedding groove ... The groove is used to place the metal block, the groove wall of the step pre-formed arc groove is an arc surface, the first insert is movably set in the first movable channel, and the first insert and the inner wall of the first movable channel jointly form a first end groove; the second stamping structure is provided with a second embedding groove, a step forming groove and a second movable channel connected in sequence, the second embedding groove is used to place the metal block after the first stamping, the groove wall of the step forming groove is a plane, the second insert is movably set in the second movable channel, and the second insert and the inner wall of the second movable channel jointly form a second end groove.

[0036] In the above-mentioned stamping device for battery terminal production, the metal block is placed in the first embedding groove, and the first upper punch punches the metal block. The metal block extends along the step pre-formed arc groove and the first end groove, so that the metal block is formed into an intermediate piece. Since the groove wall of the step pre-formed groove is an arc surface, the step of the intermediate piece formed by the first stamping is an arc surface; then, the intermediate piece is placed in the second embedding groove, and the second upper punch punches the middle for the second time. The intermediate piece further extends toward the step forming groove and the second end groove, and the arc step pre-formed by the intermediate piece plays a guiding role. During the second stamping, the groove wall of the step forming groove is stamped along the arc step, thereby avoiding the situation where burrs are formed at the step of the terminal due to one stamping, thereby improving the yield of terminal stamping.

[0037] In order to better understand the technical solutions and beneficial effects of the present disclosure, the present disclosure is further described in detail below with reference to specific embodiments:

[0038] like Figures 1 to 6 As shown, a stamping device 10 for battery terminal production in one embodiment includes a first upper punch 100, a second upper punch 200 and a lower die assembly 300, the lower die assembly 300 includes a lower die base 310, a first insert 320 and a second insert 330, the lower die base 310 is provided with a first stamping structure 311 and a second stamping structure 312 arranged adjacent to each other, the first upper punch 100 and the second upper punch 200 are both used to connect with an external driving member to make the first upper punch 100 close to or away from the first stamping structure 311, and make the second upper punch 200 close to or away from the second stamping structure 312.

[0039] Furthermore, the first stamping structure 311 is provided with a first embedding groove 3111, a step pre-formed arc groove 3112 and a first movable channel 3113 which are connected in sequence. The first embedding groove 3111 is used to place the metal block. The groove wall of the step pre-formed arc groove 3112 is an arc surface. The first insert 320 is movably arranged in the first movable channel 3113. The first insert 320 and the inner wall of the first movable channel 3113 jointly form a first end groove 3114. The first end groove 3114 is used to pre-form the metal block into a column during the first stamping. The first insert 320 is used to eject the intermediate piece after the first stamping.

[0040] Furthermore, the second stamping structure 312 is provided with a second embedding groove 3121, a step forming groove 3122 and a second movable channel 3123 which are connected in sequence. The second embedding groove 3121 is used to place the metal block after the first stamping. The groove wall of the step forming groove 3122 is flat. The second insert 330 is movably arranged in the second movable channel 3123. The second insert 330 and the inner wall of the second movable channel 3123 jointly form a second end groove 3124. The second end groove 3124 is used to make the intermediate piece finally form the required column size during the second stamping. The second insert 330 is used to eject the product after the second stamping.

[0041] In this embodiment, an external driving member is used to drive the first upper punch 100 to move toward the first stamping structure 311, so that the first upper punch 100 punches the metal block in the first embedding groove 3111. Under the pressure of the first upper punch 100, the metal block extends along the step pre-formed arc groove 3112 and the first end groove 3114 to preliminarily form the shape of the terminal, that is, the metal block is formed into an intermediate part. Since the groove wall of the step pre-formed arc groove 3112 is an arc surface, the step of the intermediate part formed by the first stamping is also an arc surface. Furthermore, the intermediate piece formed by the first stamping is placed in the second embedding groove 3121, and the external driving part is used to drive the second upper punch 200 to move toward the second stamping structure 312, so that the second upper punch 200 stamps the intermediate piece. Under the pressure of the second upper punch 200, the intermediate piece extends along the step forming groove 3122 and the second end groove 3124. At this time, the step arc surface structure of the intermediate piece plays a guiding role, so that the groove wall of the step forming groove 3122 is stamped along the step arc surface of the intermediate piece, thereby avoiding the situation where burrs are formed at the step of the terminal due to one stamping, and finally forming the shape of the required terminal.

[0042] In the above-mentioned stamping device 10 for battery terminal production, the metal block is placed in the first embedding groove 3111, and the first upper punch 100 punches the metal block. The metal block extends along the step pre-formed arc groove 3112 and the first end groove 3114, so that the metal block is formed into an intermediate piece. Since the groove wall of the step pre-formed groove is an arc surface, the step of the intermediate piece formed by the first stamping is an arc surface; then, the intermediate piece is placed in the second embedding groove 3121, and the second upper punch 200 punches the middle for the second time. The intermediate piece further extends toward the step forming groove 3122 and the second end groove 3124, and the arc step pre-formed by the intermediate piece plays a guiding role. During the second stamping, the groove wall of the step forming groove 3122 is stamped along the arc step, thereby avoiding the situation where burrs are formed at the step of the terminal due to one stamping, thereby improving the yield of terminal stamping.

[0043] like Figure 3and Figure 4 As shown, in one embodiment, the depth of the step pre-forming arc groove 3112 is less than the depth of the step forming groove 3122. It can be understood that the step of the terminal is formed in two steps, that is, the first stamping forms the initial shape at the step pre-forming arc groove 3112, and the second stamping forms the final desired shape at the step forming groove 3122. The depth of the step forming groove 3122 needs to be greater than the depth of the step pre-forming arc groove 3112 so that the final step size is obtained after two stampings, thereby improving the stamping accuracy.

[0044] like Figure 3 、 Figure 4 and Figure 6 As shown, in one embodiment, the diameters of the first embedding groove 3111, the step pre-forming arc groove 3112 and the first end groove 3114 decrease in sequence; and,

[0045] The diameters of the second embedding groove 3121 , the step forming groove 3122 and the second end groove 3124 decrease in sequence.

[0046] In this embodiment, the terminal is shaped in a shape with a diameter gradually decreasing from top to bottom. Accordingly, the diameters of the first embedding groove 3111, the step pre-formed arc groove 3112 and the first end groove 3114 in the first stamping structure 311 need to be reduced in sequence, and at the same time, the diameters of the second embedding groove 3121, the step forming groove 3122 and the second end groove 3124 in the second stamping structure 312 need to be reduced in sequence.

[0047] In one embodiment, there are two first punching structures 311, and the two first punching structures 311 are arranged adjacent to each other. It can be understood that the number of the first punching structures 311 is two, and accordingly, the number of the first upper punches 100 is also two, that is, during the first punching, two metal blocks can be punched simultaneously, thereby improving production efficiency.

[0048] like Figure 2 As shown, in one embodiment, there are two second punching structures 312, and the two second punching structures 312 are arranged adjacent to each other. It can be understood that the number of the second punching structures 312 is two, and accordingly, the number of the second upper punches 200 is also two, that is, during the second punching, two intermediate pieces can be punched simultaneously to improve production efficiency.

[0049] like Figure 2As shown, in one embodiment, the depth of the first end groove 3114 is less than the depth of the second end groove 3124. It can be understood that the column of the terminal needs to be stamped twice, and the depth of the first end groove 3114 is less than the depth of the second end groove 3124, so that the column of the terminal is gradually formed to the required size, thereby improving the stamping accuracy.

[0050] like Figure 3 and Figure 4 As shown, in one embodiment, the diameter of the first embedding groove 3111 is equal to the diameter of the second embedding groove 3121. It can be understood that during the first and second stamping, the diameters of the metal block and the end of the intermediate piece do not change, and accordingly, the diameter of the first embedding groove 3111 is equal to the diameter of the second embedding groove 3121.

[0051] like Figure 3 and Figure 4 As shown, in one embodiment, the diameter of the first end groove 3114 is equal to the diameter of the second end groove 3124. It can be understood that the diameter of the terminal column does not change between the first and second stamping, but the length of the terminal column changes, that is, the length of the terminal column is longer than that after the first stamping, and accordingly, the diameter of the first end groove 3114 is equal to the diameter of the second end groove 3124.

[0052] like Figure 2 As shown, in one embodiment, the lower mold base 310 is provided with a connecting hole 313 for a connecting member to pass through. It is understood that the lower mold base 310 needs to be fixed to the machine platform, and the lower mold base 310 is locked to the machine platform by passing the connecting member through the connecting hole 313. The connecting member can be a screw.

[0053] The present application also provides a stamping device, comprising the stamping device 10 for producing battery terminals as described in any of the above embodiments.

[0054] Compared with the prior art, the present disclosure has at least the following advantages:

[0055] In the above-mentioned stamping device 10 for battery terminal production, the metal block is placed in the first embedding groove 3111, and the first upper punch 100 punches the metal block. The metal block extends along the step pre-formed arc groove 3112 and the first end groove 3114, so that the metal block is formed into an intermediate piece. Since the groove wall of the step pre-formed groove is an arc surface, the step of the intermediate piece formed by the first stamping is an arc surface; then, the intermediate piece is placed in the second embedding groove 3121, and the second upper punch 200 punches the middle for the second time. The intermediate piece further extends toward the step forming groove 3122 and the second end groove 3124, and the arc step pre-formed by the intermediate piece plays a guiding role. During the second stamping, the groove wall of the step forming groove 3122 is stamped along the arc step, thereby avoiding the situation where burrs are formed at the step of the terminal due to one stamping, thereby improving the yield of terminal stamping.

[0056] The above-described embodiments merely represent several implementation methods of the present disclosure. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person of ordinary skill in the art could make various modifications and improvements without departing from the scope of the present disclosure, all of which fall within the scope of protection of the present disclosure. Therefore, the scope of protection of the present patent shall be determined by the appended claims.

Claims

1. A punching device for battery terminal production, characterized in that: include: a first upper punch, a second upper punch, and a lower die assembly, wherein the lower die assembly includes a lower die base, a first insert, and a second insert; the lower die base is provided with a first punching structure and a second punching structure arranged adjacent to each other; the first upper punch and the second upper punch are both used to connect to an external driving member to move the first upper punch closer to or away from the first punching structure, and to move the second upper punch closer to or away from the second punching structure; The first stamping structure is provided with a first embedding groove, a step pre-formed arc groove and a first movable channel which are sequentially connected. The first embedding groove is used to place a metal block. The groove wall of the step pre-formed arc groove is an arc surface. The first insert is movably arranged in the first movable channel. The first insert and the inner wall of the first movable channel jointly form a first end groove. The second stamping structure is provided with a second embedding groove, a step forming groove and a second movable channel which are connected in sequence. The second embedding groove is used to place the metal block after the first stamping. The groove wall of the step forming groove is flat. The second insert is movably arranged in the second movable channel. The second insert and the inner wall of the second movable channel jointly form a second end groove.

2. The punching device for battery terminal production according to claim 1, characterized in that: The depth of the step pre-forming arc groove is less than the depth of the step forming groove.

3. The punching device for battery terminal production according to claim 1, characterized in that: The diameters of the first embedding groove, the step pre-formed arc groove and the first end groove decrease in sequence; and, The diameters of the second embedding groove, the step forming groove and the second end groove decrease in sequence.

4. The punching device for battery terminal production according to claim 1, characterized in that: The number of the first stamping structures is two, and the two first stamping structures are adjacent to each other.

5. The punching device for battery terminal production according to claim 1, characterized in that: The number of the second stamping structures is two, and the two second stamping structures are arranged adjacent to each other.

6. The punching device for battery terminal production according to claim 1, characterized in that: The depth of the first end groove is less than the depth of the second end groove.

7. The punching device for battery terminal production according to claim 1, characterized in that: The diameter of the first embedding groove is equal to the diameter of the second embedding groove.

8. The punching device for battery terminal production according to claim 1, characterized in that: The diameter of the first end groove is equal to the diameter of the second end groove.

9. The punching device for battery terminal production according to claim 1, characterized in that: The lower die base is provided with a connecting hole, and the connecting hole is used for the connecting piece to pass through.

10. A stamping device, characterized in that: A punching device for producing battery terminals comprising the punching device according to any one of claims 1 to 9.

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