Stamping device and stamping equipment for copper-aluminum composite pole

Abstract

The utility model provides a stamping device and stamping equipment for a copper-aluminum composite pole. The stamping device for the copper-aluminum composite pole comprises a pre-forming mechanism and a forming mechanism, the pre-forming mechanism comprises a first male die and a first female die, the first male die is used for being connected with a driving part so that the first male die can move towards the first female die, the first female die is provided with a first embedding groove and an extension groove, and the first embedding groove is used for being connected with the first female die. The extension groove is sequentially communicated with the first embedding groove, the diameter of the extension groove is larger than that of the first embedding groove, the first embedding groove is used for embedding an aluminum block and a copper block, and the extension groove is used for enabling the aluminum block to extend along the groove wall of the extension groove when the aluminum block and the copper block are punched, so that the copper block and the aluminum block form a middleware. Specifically, the extension groove is arranged, so that the aluminum block has a space for extension during stamping, the copper block is prevented from falling into the aluminum block, the connecting surface of the copper block and the aluminum block is smooth, and the conductivity of the copper-aluminum composite pole is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of stamping devices, and in particular to a stamping device and stamping equipment for copper-aluminum composite poles. Background Art

[0002] The electrode is a terminal in a lithium-ion battery, connecting the inside and outside of the battery. One end of the electrode is connected to the internal cell of the lithium-ion battery, and the other end is connected to the external circuit of the lithium-ion battery, enabling the battery to charge and discharge. Currently, due to the high material cost and heavy weight of copper electrodes, many external circuits connected to lithium-ion batteries are often connected using aluminum materials to reduce weight and cost. Therefore, the use of a copper-aluminum composite negative electrode can reduce costs and ensure the connection between the negative electrode and the internal cell.

[0003] In the prior art, a copper-aluminum composite pole is obtained by punching a copper block and an aluminum block using a stamping device. That is, the copper-aluminum block is pressed together in a forming cavity by an upper punch and a lower punch, so that the copper-aluminum block is compositely formed into a pole of a corresponding shape. However, since the copper block is harder than the aluminum block and there is no extra space in the forming cavity for the aluminum block to expand, the copper block will sink into the aluminum block during the stamping process, and the interface between the copper block and the aluminum block will not be smooth, thereby affecting the conductive performance of the pole.

[0004] Therefore, there is an urgent need for a stamping device that can make the connection interface between the copper block and the aluminum block smooth and ensure good conductive performance of the copper-aluminum composite pole. Utility Model Content

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a stamping device and stamping equipment for copper-aluminum composite poles, which can make the connection interface between the copper block and the aluminum block smooth and make the copper-aluminum composite poles have good conductive performance.

[0006] The purpose of this disclosure is achieved through the following technical solutions:

[0007] A stamping device for copper-aluminum composite poles, comprising:

[0008] a preforming mechanism comprising a first punch and a first die, the first punch being connected to a driving member to move the first punch toward or away from the first die, the first die being provided with a first embedding groove and an extension groove, the extension groove being sequentially connected to the first embedding groove, the extension groove having a diameter greater than that of the first embedding groove, the first embedding groove being used to embed an aluminum block and a copper block, the extension groove being used to extend the aluminum block along the groove wall of the extension groove during stamping of the aluminum block and the copper block, thereby forming an intermediate piece from the copper block and the aluminum block;

[0009] The forming mechanism includes a second punch and a second die, the second die is provided with a second embedding groove, the second embedding groove is used to embed the intermediate piece, the diameter of the second embedding groove is equal to the diameter of the first embedding groove, and the second punch is used to connect with the driving member to move the second punch closer to or away from the second die.

[0010] In one embodiment, the cross section of the extension groove is rectangular.

[0011] In one embodiment, the height of the first embedding groove is greater than the height of the extension groove.

[0012] In one embodiment, the first die includes a first die base and a first insert, the first die base is provided with a first movable hole, the first insert is movably disposed in the first movable hole, so that the first insert and the first die base together form the first embedding groove, and the extension groove is provided in the first die base.

[0013] In one embodiment, a pressing boss is provided on one side of the first male mold adjacent to the first female mold.

[0014] In one embodiment, the second die includes a second die base and a second insert, the second die base is provided with a second movable hole, and the second insert is movably disposed in the second movable hole so that the second insert and the second die base together form the second embedding groove.

[0015] In one embodiment, a step portion is provided on one end of the second insert adjacent to the second punch.

[0016] In one embodiment, a pressing portion is provided at one end of the second male mold adjacent to the second female mold, and a convex cavity is provided in the middle of the pressing portion.

[0017] In one embodiment, the inner diameter of the convex cavity is equal to the diameter of the pressing boss.

[0018] A stamping device comprises the stamping device for copper-aluminum composite poles described in any one of the above embodiments.

[0019] Compared with the prior art, the present disclosure has at least the following advantages:

[0020] In the aforementioned stamping device for copper-aluminum composite poles, a preforming mechanism pre-presses the copper-aluminum block. First, the aluminum block is placed in a first embedding groove, with the copper block stacked on top. The first punch moves toward the first die to press the copper and aluminum blocks together. Due to the aluminum block's lower hardness, it deforms first. Because the extension groove is connected to the first embedding groove, the deformed aluminum block extends along the groove wall of the extension groove, causing the aluminum block to envelop the copper block, forming an intermediate piece. The forming mechanism then performs a secondary stamping on the intermediate piece to form the desired shape of the copper-aluminum composite pole. Specifically, the provision of the extension groove allows space for the aluminum block to expand during stamping, preventing the copper block from sinking into the aluminum block. This results in a smooth connection surface between the copper and aluminum blocks and improves the electrical conductivity of the copper-aluminum composite pole. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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.

[0022] Figure 1 This is a schematic structural diagram of a stamping device for a copper-aluminum composite pole according to one embodiment;

[0023] Figure 2 for Figure 1 A schematic structural diagram of a first die of a stamping device for a copper-aluminum composite pole is shown;

[0024] Figure 3 for Figure 1 A schematic structural diagram of a second die of a stamping device for a copper-aluminum composite pole is shown;

[0025] Figure 4 for Figure 1 A schematic structural diagram of a first punch of a stamping device for a copper-aluminum composite pole is shown;

[0026] Figure 5 for Figure 1 A schematic structural diagram of a second punch of a stamping device for a copper-aluminum composite pole is shown;

[0027] Figure 6 To adopt Figure 1 The diagram shows the structural changes of the copper-aluminum block punched by the punching device for the copper-aluminum composite pole. DETAILED DESCRIPTION

[0028] 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.

[0029] 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.

[0030] 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.

[0031] The present disclosure provides a stamping device for a copper-aluminum composite pole, comprising a preforming mechanism and a forming mechanism, wherein the preforming mechanism comprises a first punch and a first die, wherein the first punch is used to be connected to a driving member so that the first punch moves close to or away from the first die, and the first die is provided with a first embedding groove and an extension groove, wherein the extension groove is sequentially connected to the first embedding groove, and the diameter of the extension groove is larger than the diameter of the first embedding groove, and the first embedding groove is used to embed an aluminum block and a copper block, and the extension groove is used to extend the aluminum block along the groove wall of the extension groove when the aluminum block and the copper block are stamped, so that the copper block and the aluminum block are formed into an intermediate piece; the forming mechanism comprises a second punch and a second die, wherein the second die is provided with a second embedding groove, wherein the second embedding groove is used to embed the intermediate piece, and the diameter of the second embedding groove is equal to the diameter of the first embedding groove, and the second punch is used to be connected to the driving member so that the second punch moves close to or away from the second die.

[0032] In the aforementioned stamping device for copper-aluminum composite poles, a preforming mechanism pre-presses the copper-aluminum block. First, the aluminum block is placed in a first embedding groove, with the copper block stacked on top. The first punch moves toward the first die to press the copper and aluminum blocks together. Due to the aluminum block's lower hardness, it deforms first. Because the extension groove is connected to the first embedding groove, the deformed aluminum block extends along the groove wall of the extension groove, causing the aluminum block to envelop the copper block, forming an intermediate piece. The forming mechanism then performs a secondary stamping on the intermediate piece to form the desired shape of the copper-aluminum composite pole. Specifically, the provision of the extension groove allows space for the aluminum block to expand during stamping, preventing the copper block from sinking into the aluminum block. This results in a smooth connection surface between the copper and aluminum blocks and improves the electrical conductivity of the copper-aluminum composite pole.

[0033] 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:

[0034] like Figure 1 and Figure 2 As shown, a stamping device 10 for a copper-aluminum composite pole in one embodiment includes a preforming mechanism 100 and a forming mechanism 200. The preforming mechanism 100 includes a first punch 110 and a first die 120. The first punch 110 is used to connect with a driving member to move the first punch 110 toward or away from the first die 120. The first die 120 is provided with a first embedding groove 120a and an extension groove 120b. The extension groove 120b is sequentially connected to the first embedding groove 120a. The diameter of the extension groove 120b is larger than the diameter of the first embedding groove 120a. The first embedding groove 120a is used to embed an aluminum block and a copper block. The extension groove 120b is used to extend the aluminum block along the groove wall of the extension groove 120b when the aluminum block and the copper block are stamped, so that the copper block and the aluminum block are formed into an intermediate piece.

[0035] Furthermore, if Figure 1 and Figure 3 As shown, the forming mechanism 200 includes a second punch 210 and a second die 220. The second die 220 is provided with a second embedding groove 220a. The second embedding groove 220a is used to embed the intermediate part. The diameter of the second embedding groove 220a is equal to the diameter of the first embedding groove 120a. The second punch 210 is used to connect with the driving part to move the second punch 210 closer to or away from the second die 220.

[0036] In this embodiment, the copper block and the aluminum block are stacked and placed within the first embedding groove 120a. The aluminum block abuts the walls of the first embedding groove 120a, and the height of the aluminum block is greater than that of the first embedding groove 120a. When the first punch 110 is driven toward the first die 120 by the driving member, the copper and aluminum blocks deform under the stamping force. Because the aluminum block has a lower hardness than the copper block, the aluminum block deforms first and to a greater extent. Furthermore, because the extension groove 120b is connected to the first embedding groove 120a, the aluminum block extends along the walls of the extension groove 120b after filling the first embedding groove 120a. This allows the aluminum block to wrap around the periphery of the copper block, preventing the copper block from sinking into the aluminum block, thereby achieving a smooth copper-aluminum connection interface. Furthermore, the copper-aluminum block is punched by the pre-forming mechanism 100 to form an intermediate piece, and the intermediate piece is then punched a second time by the forming mechanism 200, so that the diameter of the second embedding groove 220a is equal to that of the first embedding groove 120a, so that the second embedding groove 220a is embedded with the bottom of the intermediate piece, and the copper-aluminum composite pole of the desired shape is further formed.

[0037] In the aforementioned stamping device 10 for a copper-aluminum composite pole, the preforming mechanism 100 pre-presses the copper-aluminum block. First, the aluminum block is placed in the first embedding groove 120a, with the copper block stacked on top. The first punch 110 moves toward the first die 120 to press the copper and aluminum blocks together. Due to the aluminum block's lower hardness, the aluminum block deforms first. Since the extension groove 120b is connected to the first embedding groove 120a, the deformed aluminum block extends along the groove wall of the extension groove 120b, causing the aluminum block to envelop the copper block, forming an intermediate piece. The forming mechanism 200 then performs a secondary stamping on the intermediate piece to form the desired shape of the copper-aluminum composite pole. Specifically, the provision of the extension groove 120b allows the aluminum block to expand during stamping, preventing the copper block from sinking into the aluminum block. This results in a smooth interface between the copper and aluminum blocks and improves the electrical conductivity of the copper-aluminum composite pole.

[0038] In one embodiment, Figure 2 As shown, the cross-section of the extension groove 120b is rectangular. In this embodiment, the cross-section of the extension groove 120b is rectangular, and the diameter of the extension groove 120b is larger than the diameter of the first embedding groove 120a. This ensures that when the copper-aluminum block is first stamped, the aluminum block extends along the groove wall of the extension groove 120b and covers the copper block. Furthermore, in other embodiments, the cross-section of the extension groove 120b can also be annular.

[0039] In one embodiment, Figure 2As shown, the height of the first embedding groove 120a is greater than the height of the extended groove 120b. It can be understood that the first embedding groove 120a is used to embed the aluminum block, and the extended groove 120b allows the aluminum block to form a step structure during stamping. The height of the first embedding groove 120a is greater than the height of the extended groove 120b, so that the bottom height of the intermediate piece is greater than the height of the step.

[0040] In one embodiment, Figure 2 As shown, the first die 120 includes a first die base 121 and a first insert 122. The first die base 121 defines a first movable hole, and the first insert 122 is movably disposed in the first movable hole, so that the first insert 122 and the first die base 121 together form the first embedding groove 120a. The extension groove 120b is defined in the first die base 121. It will be appreciated that the first insert 122 is connected to an external driving member so that the first insert 122 is movably disposed in the first movable hole, thereby enabling adjustment of the depth of the first embedding groove 120a formed by the first insert 122 and the first die base 121.

[0041] In one embodiment, Figure 3 As shown, the second die 220 includes a second die base 221 and a second insert 222. The second die base 221 defines a second movable hole, and the second insert 222 is movably disposed in the second movable hole, so that the second insert 222 and the second die base 221 together form a second embedding groove 220a. It will be understood that the second insert 222 is connected to an external driving member to allow the second insert 222 to be movably disposed in the second movable hole, thereby adjusting the depth of the second embedding groove 220a formed by the second insert 222 and the second die base 221.

[0042] In one embodiment, Figure 3 As shown, the second insert 222 has a step portion 222a at one end adjacent to the second punch 210. It is understood that the step portion 222a is provided at one end adjacent to the second punch 210 of the second insert 222 so that a step is formed at the bottom of the intermediate piece during stamping to form a copper-aluminum composite pole of the desired shape.

[0043] In one embodiment, Figure 4 As shown, a pressing boss 111 is provided on one side of the first punch 110 adjacent to the first die 120. It can be understood that when the first punch 110 punches the copper block, the pressing boss 111 punches the copper block so that a groove is formed at the end of the copper block.

[0044] In one embodiment, Figure 5As shown, the second punch 210 is provided with a pressing portion 211 at one end adjacent to the second die 220, and a convex cavity 211a is provided in the middle of the pressing portion 211. It can be understood that since the end of the first punch 110 is provided with a pressing boss 111, the pressing boss 111 forms a groove on the top of the intermediate piece, and the pressing portion 211 of the second punch 210 is used to flatten the groove wall of the intermediate piece, while the convex cavity 211a is used to form a convex shape in the middle of the intermediate piece when stamping. For details, see Figure 6 .

[0045] In one embodiment, Figure 4 and Figure 5 As shown, the inner diameter of the convex cavity 211a is equal to the diameter of the pressing boss 111, so that a convex bulge can be better formed on the top of the copper block during the secondary stamping.

[0046] The present application also provides a stamping device, including the stamping device 10 for the copper-aluminum composite pole described in any of the above embodiments.

[0047] Compared with the prior art, the present disclosure has at least the following advantages:

[0048] In the aforementioned stamping device 10 for a copper-aluminum composite pole, the preforming mechanism 100 pre-presses the copper-aluminum block. First, the aluminum block is placed in the first embedding groove 120a, with the copper block stacked on top. The first punch 110 moves toward the first die 120 to press the copper and aluminum blocks together. Due to the aluminum block's lower hardness, the aluminum block deforms first. Since the extension groove 120b is connected to the first embedding groove 120a, the deformed aluminum block extends along the groove wall of the extension groove 120b, causing the aluminum block to envelop the copper block, forming an intermediate piece. The forming mechanism 200 then performs a secondary stamping on the intermediate piece to form the desired shape of the copper-aluminum composite pole. Specifically, the provision of the extension groove 120b allows the aluminum block to expand during stamping, preventing the copper block from sinking into the aluminum block. This results in a smooth interface between the copper and aluminum blocks and improves the electrical conductivity of the copper-aluminum composite pole.

[0049] 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 stamping device for copper-aluminum composite poles, characterized in that: include: a preforming mechanism comprising a first punch and a first die, the first punch being connected to a driving member to move the first punch toward or away from the first die, the first die being provided with a first embedding groove and an extension groove, the extension groove being sequentially connected to the first embedding groove, the extension groove having a diameter greater than that of the first embedding groove, the first embedding groove being used to embed an aluminum block and a copper block, the extension groove being used to extend the aluminum block along the groove wall of the extension groove during stamping of the aluminum block and the copper block, so that the copper block and the aluminum block are formed into an intermediate piece; The forming mechanism includes a second punch and a second die, the second die is provided with a second embedding groove, the second embedding groove is used to embed the intermediate piece, the diameter of the second embedding groove is equal to the diameter of the first embedding groove, and the second punch is used to connect with the driving member to make the second punch move closer to or away from the second die.

2. The punching device for copper-aluminum composite poles according to claim 1, characterized in that: The cross section of the extension groove is rectangular.

3. The punching device for copper-aluminum composite poles according to claim 1, characterized in that: The height of the first embedding groove is greater than the height of the extension groove.

4. The punching device for copper-aluminum composite poles according to claim 1, characterized in that: The first die includes a first die base and a first insert. The first die base is provided with a first movable hole. The first insert is movably arranged in the first movable hole so that the first insert and the first die base together form the first embedding groove. The extension groove is provided in the first die base.

5. The punching device for copper-aluminum composite poles according to claim 1, characterized in that: The second concave mold includes a second mold base and a second insert. The second mold base is provided with a second movable hole. The second insert is movably arranged in the second movable hole so that the second insert and the second mold base jointly form the second embedding groove.

6. The punching device for copper-aluminum composite poles according to claim 5, characterized in that: The second insert is provided with a step portion at one end adjacent to the second punch.

7. The punching device for copper-aluminum composite poles according to claim 1, characterized in that: A pressing boss is convexly provided on one side of the first convex mold adjacent to the first concave mold.

8. The punching device for copper-aluminum composite poles according to claim 7, characterized in that: A pressing portion is provided at one end of the second convex mold adjacent to the second concave mold, and a convex cavity is provided in the middle of the pressing portion.

9. The punching device for copper-aluminum composite poles according to claim 8, characterized in that: The inner diameter of the convex cavity is equal to the diameter of the pressing boss.

10. A stamping device, characterized in that: A punching device for a copper-aluminum composite pole comprising any one of claims 1 to 9.

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