Cold heading forming module for anode column of battery for new energy vehicle

Abstract

The utility model discloses a cold heading forming module for an anode column of a battery for a new energy vehicle. The cold heading forming module comprises a shearing station and a five-station cold heading die, the first station mold is used for performing cold heading on the bottom of the base material cut by the material cutting station to form a first frustum-shaped structure; the second station mold is used for cold heading the cylindrical structure at the other end of the first station material to a second frustum-shaped structure; the second station material is flatly conveyed to the third station mold, and a blind hole groove is formed in the top of the second station material in a cold heading mode; the fourth station mold is used for cold heading the top of the third station material turned over by 180 degrees into an umbrella-shaped structure; and the fifth station die is used for cold-heading the umbrella-shaped structure at the top of the fourth station material into a disc structure and cold-heading the edge of the groove at the bottom of the fourth station material into an annular groove structure, and a formed product is obtained. And the cold heading die station gradually performs cold heading on the base material to form a battery anode column formed product, and axial blind hole groove and annular groove operation of the product does not need to be performed.

Description

Technical Field

[0001] This utility model belongs to the field of cold heading technology, and in particular relates to a cold heading forming module for anode columns of batteries for new energy vehicles. Background Technology

[0002] The anode column is a crucial component of new energy vehicle batteries. As the main channel for transmitting current within the battery, it is key to the stability and lifespan of the power battery. Currently, the main processing method for anode columns is cold heading machining. The forming process involves: cold heading the disc flange face and rod dimensions, machining the axial blind hole groove and annular groove, and removing burrs and iron filings from the sorting hole. This machining method involves many steps, has low processing efficiency, produces poor surface roughness, and has low raw material utilization, increasing production costs. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a cold heading forming module for anode columns of new energy vehicle batteries that is formed in one step and improves the utilization rate of raw materials.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: a cold heading forming module for anode columns of batteries for new energy vehicles, including a shearing station and a five-station cold heading mold;

[0005] First station mold: The bottom of the substrate after cutting at the shearing station is cold-forged into a first frustum-shaped structure to obtain the first station material;

[0006] Second station mold: The material from the first station is rotated 180° and sent to the second station mold for cold heading and shaping. One end of the material is formed from a frustum-shaped cone to a cylindrical structure, and the cylindrical structure at the other end of the material is cold-headed to a frustum-shaped cone to obtain the material from the second station.

[0007] Third station mold: The material from the second station is flatly transferred to the third station mold, and blind hole grooves are cold-forged into the top of the material from the second station to obtain the material from the third station.

[0008] The fourth station mold rotates the material from the third station 180° and sends it to the fourth station mold. The top of the material from the third station is cold-forged into an umbrella-shaped structure to obtain the material from the fourth station.

[0009] The fifth station mold transfers the material from the fourth station to the fifth station mold. The top umbrella-shaped structure of the material from the fourth station is cold-forged into a disc structure, and the bottom edge of the blind hole groove of the material from the fourth station is cold-forged into an annular groove structure to obtain the shaped product.

[0010] Preferably, the taper of both the first frustum-shaped structure and the second frustum-shaped structure is 85°-100°.

[0011] Preferably, the maximum diameter of the umbrella-shaped cold heading at the top of the third station is 1.5-1.8 times the diameter of the substrate.

[0012] Preferably, the cold heading at the top of the material in the third station has an umbrella-shaped structure with a taper of 105°-125°.

[0013] Preferably, the cold forging of the inlet end of the blind hole groove of the formed product is an angled structure, and the angled structure is gradually cold forged by the third station mold, the fourth station mold, and the fifth station mold.

[0014] Preferably, the outer edge of the first frustum-shaped structure to the outer end face of the cylindrical structure is cold-forged into a first chamfer with a radius of 0.3mm, and the fifth station mold cold-forges the first chamfer into a second chamfer with a forming radius of 0.4mm.

[0015] Preferably, the transition sections between the first frustum-shaped structure and the second frustum-shaped structure and their cylindrical rods are both cold-forged into arc surfaces with a radius of 1 mm, and the arc of the arc surface is 45°.

[0016] Compared with the prior art, the advantages of this utility model are:

[0017] The cold heading die station gradually cold-heads the substrate into battery anode column forming products. It eliminates the need for axial blind hole groove and annular groove operations, thus meeting the high-precision forming requirements. It also eliminates the step of sorting burrs and iron filings in blind hole grooves and annular grooves, improving product production efficiency. Cold-headed products have complete streamlines and high structural strength. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a structural diagram of the cold heading module of this utility model.

[0020] Figure 2 This is a schematic diagram of the cold heading process for the substrate.

[0021] Figure 3 It is a 3D view of the finished product. Detailed Implementation

[0022] The present invention will now be described in detail with reference to specific embodiments:

[0023] Example 1:

[0024] A cold heading forming module for anode columns of batteries for new energy vehicles includes a shearing station and a five-station cold heading mold; taking a base material 0 with a height of 9.6mm and a diameter of 5.8mm as an example;

[0025] First station mold 1: The bottom of the base material 0 after cutting at the shearing station is cold-forged into a first frustum-shaped structure with a taper of 90°, to obtain the first station material 11; the transition section between the first frustum-shaped structure and its cylindrical rod is cold-forged into an arc surface with a radius of 1mm and an arc of 45°.

[0026] Second station mold 2: The first station material 11 is rotated 180° and sent to the second station mold 2 for cold heading and shaping of one end of the first frustum-shaped structure into a cylindrical structure. The base material 0 is first cold-headed into the first frustum-shaped structure and then cold-headed into a cylindrical structure. This can shape the edge of the base material 0 at this end to avoid the problem of skewing, deformation and cracking at this end during subsequent cold heading operations. The cylindrical structure at the other end of the first station material 11 is cold-headed into the second frustum-shaped structure. The second station mold 2 cold-heads the outer edge of the outer end face of the cylindrical rod of the first station material 11 into a first chamfer with a radius of 0.3mm to obtain the second station material 12. The taper of the second frustum-shaped structure is 90°. The transition section between the second frustum-shaped structure and its cylindrical rod is cold-headed into an arc surface with a radius of 1mm and an arc of 45°.

[0027] Third station mold 3: The material 12 from the second station is flatly sent to the third station mold 3, and the top of the material 12 from the second station is cold-forged to form a blind hole groove, thus obtaining the material 13 from the third station; the groove is cold-forged first and then cold-forged to the qualified size of the formed product 15 to avoid cracking and deformation. In this station, the cold-forging of the inlet end of the blind hole groove is 0.15mm in length and 45° angle.

[0028] The fourth station mold 4 rotates the third station material 13 180° and sends it to the fourth station mold 4. The top of the third station material 13 is cold-forged into an umbrella-shaped structure to avoid cracking and deformation due to the flange surface being cold-forged once. The maximum diameter of the umbrella-shaped structure is 1.6 times the diameter of the base material 0, and the taper of the umbrella-shaped structure is 109°. The fourth station mold 4 cold-forges the first chamfer to a second chamfer with a forming radius of 0.4mm. The bevel at the entrance end of the blind hole groove is further cold-forged to a structure with a length of 0.18mm and a bevel of 45° to obtain the fourth station material 14.

[0029] In the fifth station mold 5, the material 14 from the fourth station is horizontally transferred to the fifth station mold 5. The umbrella-shaped structure at the top of the material 14 is cold-forged into a disc structure, and the bottom edge of the blind hole groove at the bottom of the material 14 is cold-forged into an annular groove structure. The beveled end of the blind hole groove is further cold-forged to a structure with a forming length of 0.4 mm and a bevel angle of 45°, resulting in the formed product 15. The longitudinal section of the annular groove structure has a semi-circular bottom with a radius of 0.18 mm. The thickness of the disc structure of the formed product 15 is 0.8 mm, the diameter of the disc structure is 15 mm, the height of the cylindrical rod of the formed product 15 is 4.3 mm, and the diameter of the cylindrical rod is 6 mm.

[0030] Example (II):

[0031] A cold heading forming module for anode columns of batteries for new energy vehicles includes a shearing station and a five-station cold heading mold; taking a base material 0 with a height of 9.6mm and a diameter of 5.8mm as an example;

[0032] First station mold 1: The bottom of the substrate 0 after cutting at the shearing station is cold-forged into a first frustum-shaped structure with a taper of 95°, to obtain the first station material 11; the transition section between the first frustum-shaped structure and its cylindrical rod is cold-forged into an arc surface with a radius of 1mm and an arc of 40°.

[0033] Second station mold 2: The first station material 11 is rotated 180° and sent to the second station mold 2 for cold heading and shaping of one end of the first frustum-shaped structure into a cylindrical structure. The base material 0 is first cold-headed into the first frustum-shaped structure and then cold-headed into a cylindrical structure. This can shape the edge of the base material 0 at this end to avoid the problem of skewing, deformation and cracking at this end during subsequent cold heading operations. The cylindrical structure at the other end of the first station material 11 is cold-headed into the second frustum-shaped structure. The second station mold 2 cold-heads the outer edge of the outer end face of the cylindrical rod of the first station material 11 into a first chamfer with a radius of 0.3mm to obtain the second station material 12. The taper of the second frustum-shaped structure is 90°. The transition section between the second frustum-shaped structure and its cylindrical rod is cold-headed into an arc surface with a radius of 1mm and an arc of 40°.

[0034] Third station mold 3: The material 12 from the second station is flatly sent to the third station mold 3, and the top of the material 12 from the second station is cold-forged to form a blind hole groove, thus obtaining the material 13 from the third station; the groove is cold-forged first and then cold-forged to the qualified size of the formed product 15 to avoid cracking and deformation. In this station, the cold-forging of the inlet end of the blind hole groove is 0.15mm in length and 45° angle.

[0035] The fourth station mold 4 rotates the third station material 13 180° and sends it to the fourth station mold 4. The top of the third station material 13 is cold-forged into an umbrella-shaped structure to avoid cracking and deformation due to the flange surface being cold-forged once. The maximum diameter of the umbrella-shaped structure is 1.65 times the diameter of the base material 0, and the taper of the umbrella-shaped structure is 115°. The fourth station mold 4 cold-forges the first chamfer to a second chamfer with a forming radius of 0.4mm. The bevel at the entrance end of the blind hole groove is further cold-forged to a structure with a length of 0.18mm and a bevel of 45° to obtain the fourth station material 14.

[0036] In the fifth station mold 5, the material 14 from the fourth station is horizontally transferred to the fifth station mold 5. The umbrella-shaped structure at the top of the material 14 is cold-forged into a disc structure, and the bottom edge of the blind hole groove at the bottom of the material 14 is cold-forged into an annular groove structure. The beveled end of the blind hole groove is further cold-forged to a structure with a forming length of 0.4 mm and a bevel angle of 45°, resulting in the formed product 15. The longitudinal section of the annular groove structure has a semi-circular bottom with a radius of 0.18 mm. The thickness of the disc structure of the formed product 15 is 0.8 mm, the diameter of the disc structure is 15 mm, the height of the cylindrical rod of the formed product 15 is 4.3 mm, and the diameter of the cylindrical rod is 6 mm.

Claims

1. A cold-upsetting forming die set for a battery anode post for a new energy vehicle, characterized in that, It comprises a shearing station and a five-station cold heading die; The first-station die (1) cold heads a first conical frustum structure at the bottom of the base material (0) after shearing by the shearing station, to obtain a first-station material (11); The second-station die (2) cold heads the first conical frustum structure at one end of the first-station material (11) into a cylindrical structure, and cold heads the cylindrical structure at the other end of the first-station material (11) into a second conical frustum structure, to obtain a second-station material (12); The third-station die (3) cold heads a blind hole groove at the top of the second-station material (12), to obtain a third-station material (13); The fourth-station die (4) cold heads the top of the third-station material (13) into an umbrella structure, to obtain a fourth-station material (14); The fifth-station die (5) cold heads the top of the fourth-station material (14) into a disc structure, and cold heads the groove bottom edge of the blind hole groove at the bottom of the fourth-station material (14) into an annular groove structure, to obtain a formed product (15).

2. The battery anode post cold-upsetting forming die set for new energy vehicles according to claim 1, characterized in that: The taper of the first conical frustum structure and the second conical frustum structure is 85°-100°.

3. The battery anode post cold-upsetting forming die set for new energy vehicles according to claim 1, characterized in that: The maximum diameter dimension of the umbrella structure at the top of the third-station material (13) is 1.5-1.8 times the diameter dimension of the base material (0).

4. The battery anode post cold-upsetting forming die set for new energy vehicles according to claim 1, characterized in that: The taper of the umbrella structure at the top of the third-station material (13) is 105°-125°.

5. The battery anode post cold-upsetting forming die set for new energy vehicles according to claim 2, characterized in that: The entrance end of the blind hole groove of the formed product (15) is cold headed into an inclined angle structure, which is gradually cold headed by the third-station die (3), the fourth-station die (4), and the fifth-station die (5).

6. The battery anode post cold-upsetting forming die set for new energy vehicles according to claim 2, characterized in that: The outer edge of the outer end surface of the first conical frustum structure to the cylindrical structure is cold headed into a first chamfer with a radius dimension of 0.3 mm, and the first chamfer is cold headed into a second chamfer with a radius of 0.4 mm by the fifth-station die (5).

7. The battery anode post cold-upsetting forming die set for new energy vehicles according to claim 2, characterized in that: The transition section between the first conical frustum structure and the cylindrical rod portion thereof, and the transition section between the second conical frustum structure and the cylindrical rod portion thereof are each cold headed into a circular arc surface with a radius dimension of 1 mm, and the circular arc surface has an arc of 45°.

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