CN109622848B

CN109622848B - Upsetting method for battery pole piece roller

Info

Publication number: CN109622848B
Application number: CN201811630007.6A
Authority: CN
Inventors: 齐冬冬; 许世昌; 刘延春
Original assignee: Sinosteel Xingtai Machinery and Mill Roll Co Ltd
Current assignee: Sinosteel Xingtai Machinery and Mill Roll Co Ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2020-07-17
Anticipated expiration: 2038-12-29
Also published as: CN109622848A

Abstract

The invention relates to a battery pole piece roller upsetting method, and belongs to the technical field of roller forging. A battery pole piece roller upsetting method comprises a roller body and a roller neck, wherein the two ends of the roller body are integrally formed, the diameter of the roller body is larger than that of the roller neck, and the roller body is manufactured by adopting a local upsetting method; reserving excess materials at the root part of the roller body connected with the roller neck during blanking; during upsetting, a drain pan is utilized, and excess materials are reserved to flow under the action of an inner hole of the drain pan to form the root of the roller body; the blank flows to the corner of the roller body to form the corner and produce the bulge. According to the invention, through reserving the excess material, the edge part can be promoted to finally deform to form a right angle by utilizing the flow of the excess material during upsetting, so that a large fillet is avoided, and the normal operation of a product process is ensured. Compared with the traditional method, the process method of the invention can save raw materials, reduce production cost and improve the utilization rate of materials; the number of times of upsetting can be reduced, so that the processing time is shortened, and the overall processing efficiency is improved.

Description

Upsetting method for battery pole piece roller

Technical Field

The invention relates to a battery pole piece roller upsetting method, and belongs to the technical field of roller forging.

Background

In roll products, battery pole piece rolls are used to roll battery pole pieces. The shape of the roller is different from that of other rollers used in conventional rolling due to the requirement of a roller electrode, the difference between the diameter of the middle roller body and the diameter of the two ends of the roller is larger, and in order to meet the requirement of product forging and ensure the product quality, a forging mode of local upsetting is adopted, and the large difference between the roller body and the roller diameter is realized through local upsetting deformation of the roller body. After local upsetting, a roll body blank forms a single-drum shape, corner parts at two ends of the roll body are extremely easy to form round corners and lack of meat through later-stage drawing forming, the meat lack condition of the corner parts of the roll body causes difficulty in later-stage machining, the formation of upsetting the roll body for multiple times only by increasing the material consumption of the roll body or increasing the production fire number is improved, the material or energy waste is caused, and the production efficiency is low.

Disclosure of Invention

The invention aims to provide a method for upsetting a battery pole piece roller, which solves the technical problems, reduces the waste of materials and energy and improves the production efficiency on the premise of ensuring the quality of the roller.

In order to achieve the purpose, the invention adopts the technical scheme that:

a battery pole piece roller upsetting method comprises a roller body and a roller neck, wherein the two ends of the roller body are integrally formed, the diameter of the roller body is larger than that of the roller neck, and the roller body is manufactured by adopting a local upsetting method; reserving excess materials at the root part of the roller body connected with the roller neck during blanking; during upsetting, a drain pan is utilized, and excess materials are reserved to flow under the action of an inner hole of the drain pan to form the root of the roller body; the blank flows to the corner of the roller body to form the corner and produce the bulge.

The technical scheme of the invention is further improved as follows: the reserved excess material is a fillet at the intersection of the roll body and the roll neck.

The technical scheme of the invention is further improved as follows: the radius of the fillet of the reserved excess material is 0.5-0.8 times of the radius of the inner hole of the drain pan.

The technical scheme of the invention is further improved as follows: the height of the bulge at the corner of the roller body protruding out of the surface of the roller body is 10-20 mm.

The technical scheme of the invention is further improved as follows: further comprises the subsequent drawing-out process; and trimming the raised part into a right angle of the roller body through a drawing process.

Due to the adoption of the technical scheme, the invention has the following technical effects:

the invention reserves excess material at the root of the roller body during blanking and utilizes the drain pan to carry out local upsetting during upsetting. Under the effect of the inner hole of the bushing, the contacted reserved excess materials can flow to form the root of the roller body, the blank of the root of the original roller body flows to the corner of the roller body along with the root of the original roller body, the corner is finally formed and the bulge is generated, and the bulge part can be trimmed into the right angle of the roller body through the subsequent drawing process.

The reserved excess material is in a round angle shape, the radius of the round angle is further limited through the relation with the radius of the inner hole of the bushing plate, so that the corner of the roller body is enabled to generate a bulge which can meet the requirement, the corner of the roller body forms a right angle in the subsequent drawing process, and the integral structure of the roller body meets the design requirement.

The height of the bulge at the corner of the roller body, which protrudes out of the surface of the roller body, is 10-20 mm, and the bulge with the height can be corrected into a right angle of the roller body in the subsequent drawing process, so that the subsequent machining of the battery pole piece roller due to meat deficiency is avoided.

Compared with the traditional method, the process method of the invention can save raw materials, reduce production cost and improve the utilization rate of materials; the number of times of upsetting can be reduced, so that the processing time is shortened, and the processing efficiency is improved.

Drawings

FIG. 1 is a schematic view of the upsetting operation of the present invention;

wherein, the roller comprises 1, a roller body, 2, a roller neck, 3, a drain pan, 4 and excess materials.

Detailed Description

The invention is described in further detail below with reference to the following figures and specific embodiments:

the invention discloses a method for upsetting a battery pole piece roller, which is used for processing and manufacturing the battery pole piece roller. The following are specific examples:

the invention relates to a method for upsetting a battery pole piece roller, which is used for manufacturing the battery pole piece roller. The battery pole piece roller comprises a roller body 1 and a roller neck 2 which is formed at two ends of the roller body 1 in an integrated mode, and the diameter of the roller body 1 is larger than that of the roller neck 2. The diameter difference between the roll body 1 and the roll neck 2 is large, and the roll body 1 is manufactured by adopting a local upsetting method.

Aiming at the problems existing in the background technology, the processing method reserves the excess material 4 at the root part of the roller body 1 connected with the roller neck 2 during blanking. The blank is partially upset by using the drain pan 3, the drain pan 3 is provided with an inner hole, the inner hole of the roller body 1 with the diameter larger than that of the drain pan 3 can not pass through, and the inner hole of the roller neck 2 with the diameter smaller than that of the drain pan 3 can pass through. During upsetting, the reserved excess material 4 flows under the action of the inner hole of the drain pan 3 to form the root of the roller body; the stock root is extruded to flow toward the corners of the roll body, forming the corners and creating the projections. Specifically, as shown in fig. 1, the direction indicated by the arrow in fig. 1 is the direction of the remainder flow. In general, this upsetting method is provided with a drawing step in the subsequent processing; and trimming the raised part into a right angle of the roller body through a drawing process.

In the specific implementation, the reserved excess material 4 is a round angle at the intersection of the roller body 1 and the roller neck 2, namely, the excess material 4 is added at the original right angle and is set to be a round angle. In general, the diameter of the fillet of the reserved excess material 4 is determined according to the diameter of the inner hole of the drain pan 3, and the radius of the fillet of the reserved excess material 4 is 0.5-0.8 times of the radius of the inner hole of the drain pan 3. The excess material 4 that this structure set up can smooth and easy flow under the effect of hourglass dish, and then makes 1 bight of roll body produce the arch, prevents that roll body bight from lacking meat in the follow-up process of drawing out.

The height of the bulge at the corner of the roller body 1 protruding out of the surface of the roller body 1 is 10-20 mm, the bulge with the height can be corrected to be a right angle of the roller body in the subsequent drawing process, and the subsequent machining of the battery pole piece roller cannot be influenced due to meat shortage.

The reserved excess material is designed into a round angle shape, the requirement for generating bulges at the corner of the roller body can be met by limiting the diameter of the round angle, the corner of the roller body forms a right angle in the subsequent drawing process, and the integral structure of the roller body meets the design requirement. The fillet radius of the reserved excess material is 0.5-0.8 times of the inner hole radius of the drain pan, and the arrangement can not only meet the requirement that the excess material flows to form a bulge at the corner of the roller body during local upsetting, but also avoid the waste caused by excessive excess material and the formation promotion effect on the right angle of the roller body in the subsequent drawing process.

The preset fillet diameter is limited by the inner hole diameter of the drain pan, so that the implementation is convenient, and the use requirement can be met.

Example 1

In the embodiment, the diameter of the blank of the roller body of the battery pole piece roller is 840mm, and the diameter of the blank of the roller neck is 400mm, and the blank needs to be upset. The diameter of the inner hole of the used drain pan is 400 mm.

During blanking, a fillet is reserved at the root part of the roller body connected with the roller neck, and the radius of the fillet is 160 mm. And (3) carrying out local upsetting by using a leakage disc, and forming a bulge at the corner of the roller body, wherein the height of the bulge is 20 mm. The projections can be modified to right angles to the roll body during subsequent elongation.

The process only needs to add 200Kg of excess material, and the original process needs to add 520 Kg of material for the roller body. The process greatly saves raw materials.

Example 2

In the embodiment, the diameter of the blank of the roller body of the battery pole piece roller is 790mm, and the diameter of the blank of the roller neck is 370mm, and the blank needs to be upset. The diameter of the inner hole of the used drain pan is 370 mm.

During blanking, a fillet is reserved at the root part of the roller body connected with the roller neck, and the radius of the fillet is 92.5 mm. And (3) carrying out local upsetting by using a leakage disc, and forming a bulge at the corner of the roller body, wherein the height of the bulge is 10 mm. The projections can be modified to right angles to the roll body during subsequent elongation.

The process only needs to increase 180Kg of excess material, and the original process needs to increase 400 Kg of material for the roller body. The process greatly saves raw materials.

Example 3

In the embodiment, the diameter of the blank of the roller body of the battery pole piece roller is 840mm, and the diameter of the blank of the roller neck is 390mm, and the blank needs to be upset. The diameter of the inner hole of the used drain pan is 400 mm.

During blanking, a fillet is reserved at the root part of the roller body connected with the roller neck, and the radius of the fillet is 150 mm. And (3) carrying out local upsetting by using a leakage disc, and forming a bulge at the corner of the roller body, wherein the height of the bulge is 15 mm. The projections can be modified to right angles to the roll body during subsequent elongation.

The process only needs to increase 183Kg of excess material, and the original process needs to increase 500Kg of material for the roller body. The process greatly saves raw materials.

Example 4

In the embodiment, the diameter of the blank of the roller body of the battery pole piece roller is 790mm, and the diameter of the blank of the roller neck is 390mm, and the blank needs to be upset. The diameter of the inner hole of the used drain pan is 390 mm.

During blanking, a fillet is reserved at the root part of the roller body connected with the roller neck, and the radius of the fillet is 140 mm. And local upsetting is carried out by using a leakage disc, and a bulge is formed at the corner of the roller body, wherein the height of the bulge is 18 mm. The projections can be modified to right angles to the roll body during subsequent elongation.

The process only needs to increase 205Kg of excess material, and the original process needs to increase 455 Kg of material for the roller body. The process greatly saves raw materials.

In the above embodiments, the overall upsetting process time is shortened by more than 20% compared with the conventional process.

The process method of the invention not only can save raw materials and reduce production cost, but also can reduce processing time and improve processing efficiency.

Claims

1. The utility model provides a battery pole piece roll upsetting method, battery pole piece roll includes roll body (1) and roll neck (2) that roll body (1) both ends integrated into one piece, and roll body (1) diameter is greater than roll neck (2) diameter, its characterized in that: manufacturing a roller body (1) by adopting a local upsetting method; during blanking, a residual material (4) is reserved at the root part where the roller body (1) is connected with the roller neck (2); during upsetting, a drain pan is utilized, and the reserved excess material (4) flows under the action of an inner hole of the drain pan (3) to form the root of the roller body; the blank at the root of the original roller body flows to the corner of the roller body to form the corner and generate a bulge; the reserved excess material (4) is a fillet at the intersection of the roller body (1) and the roller neck (2); the radius of the fillet of the reserved excess material (4) is 0.5-0.8 times of the radius of the inner hole of the drain pan (3).

2. The method for upsetting the roll of the battery pole piece as recited in claim 1, wherein: the height of the bulge at the corner of the roller body (1) protruding out of the surface of the roller body (1) is 10-20 mm.

3. The method for upsetting the roll of the battery pole piece as recited in claim 1, wherein: further comprises the subsequent drawing-out process; and trimming the raised part into a right angle of the roller body through a drawing process.