Blade battery shell tube forming device with inner boss

Abstract

The utility model discloses a blade battery shell tube forming device with an inner boss, and relates to the field of battery shell processing. The blade battery shell tube forming device with the inner bosses comprises a plurality of sets of racks which are continuously arranged, convex rollers and concave rollers which are matched with each other are arranged on the racks, a cavity used for rolling a profile is formed between the convex rollers and the concave rollers, R-angle grooves are formed in the two sides of the cavity, and boss grooves are formed in the middle of the cavity. The width of a cavity formed by the convex rollers and the concave rollers is gradually decreased, the depth of the cavity is gradually increased, and the cavity is gradually close to the closed shape from the open arc shape. According to the blade battery shell tube forming device with the inner boss, the technological boss is pressed out through the boss groove, so that an aluminum strip cannot deflect in the continuous pressing process through positioning, and the two sides of the aluminum strip are gradually gathered towards the middle to be formed through the R-angle groove with the continuously-reduced angle; therefore, the horizontal distance and the height of the welding position of the formed blade battery shell are accurately controlled, and the welding quality is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of battery shell processing, in particular to a blade battery shell tube forming device with an inner boss. Background Art

[0002] Blade batteries are a type of sheet-shaped single battery with a small overall thickness but large length and width. During production and processing, in order to ensure the safety of the single blade battery, positive aluminum plates are usually bent into shape and then welded at the joints.

[0003] In the existing solutions, many blade battery shells are initially formed by rolling with upper and lower rollers during production, and then stretched through the corresponding forming workstation or forming mold. However, in the actual forming process, on the one hand, in the initial rolling stage, when the aluminum sheet passes through the upper and lower rollers, it is very easy to deviate to the side due to its smooth surface. Even if positioning parts are used for positioning, there will be a certain degree of deflection. On the other hand, when the top surface is bent subsequently, the bending amount and bending angle on both sides are difficult to control, which can easily lead to left and right seam distance and height differences at the welding gap of the shell after forming, affecting the welding operation. For this purpose, a blade battery shell tube forming device with an inner boss is provided to solve the above problems. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a blade battery shell tube forming device with an inner boss, which solves the problem that the aluminum strip is prone to lateral deviation in the initial rolling stage, and the bending amount and bending angle on both sides are difficult to control during the subsequent top surface bending, which easily leads to differences in left and right seam distances and heights at the welding gap of the shell after forming, affecting the welding operation.

[0005] To achieve the above purpose, the present invention is implemented through the following technical solutions: a blade battery shell tube forming device with an inner boss, comprising multiple groups of continuously arranged frames, multiple groups of frames are provided with convex rollers and concave rollers that cooperate with each other, and a cavity for rolling the profile is formed between the convex rollers and the concave rollers. The cavity formed by the convex rollers and the concave rollers is provided with R-angle grooves on both sides for rolling out R angles on both sides of the profile, and a boss groove in the middle for rolling out an inner boss of the profile. The width of the cavity formed by the multiple groups of convex rollers and the concave rollers is set in a decreasing manner and the depth is set in an increasing manner, and gradually approaches a closed shape from an open arc shape, so that the closed part of the profile is slightly convex after rolling.

[0006] Preferably, the boss groove consists of a process groove arranged on the surface of the convex roller and a process convex groove arranged on the outer surface of the concave roller.

[0007] Preferably, the process grooves are symmetrically arranged on the outer surfaces of both ends of the convex roller, and the two groups of process grooves are close to the middle of the convex roller.

[0008] Preferably, the process convex grooves are symmetrically arranged on the outer surfaces of both ends of the concave roller, and the two groups of process convex grooves are close to the middle of the concave roller.

[0009] Preferably, the process groove and the process convex groove are both continuous ring-shaped.

[0010] Preferably, a first mounting seat and a second mounting seat are provided on the outer surface of the frame, the convex roller is installed in the first mounting seat, and the concave roller is installed in the second mounting seat.

[0011] Preferably, the first mounting seat is fixedly arranged at the bottom end of the frame, and the second mounting seat is vertically slidably arranged at the upper end of the frame.

[0012] Preferably, a lifting drive member is installed on the top of the frame, and the lifting drive member is used to drive the second mounting seat to move up and down.

[0013] Preferably, a rotating shaft is fixedly installed inside the convex roller and the concave roller, and the two groups of rotating shafts are respectively provided with bearings in the first mounting seat and the second mounting seat.

[0014] Preferably, a driving gear and a passive gear are fixedly provided on the outer ends of the two groups of rotating shafts respectively, and the driving gear and the passive gear are meshed with each other.

[0015] The utility model discloses a blade battery shell tube forming device with an inner boss, which has the following beneficial effects: the device forms a cavity for rolling a profile between the convex rollers and the concave rollers by arranging multiple groups of continuous convex rollers and concave rollers, the two sides of the cavity formed by the convex rollers and the concave rollers are provided with R-angle grooves for rolling out R angles on both sides of the profile, and the middle is provided with a boss groove for rolling out an inner boss of the profile, the width of the cavity formed by the multiple groups of convex rollers and the concave rollers is set in a decreasing manner and the depth is set in an increasing manner, and gradually approaches a closed shape from an open arc shape, so that the closed part of the profile is in a slightly convex state after rolling, and when in use, the aluminum strip passes through the multiple convex rollers and the concave rollers in sequence, and the process boss is pressed out through the boss groove, so that the aluminum strip will not be deflected during the continuous pressing process, and the R-angle grooves with continuously decreasing angles are used to gradually gather the two sides of the aluminum strip toward the middle to form, so that the welding part of the blade battery shell after forming can maintain a horizontal distance and high precision control, thereby ensuring the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the structure of a single-group molding device of the utility model;

[0018] Figure 2 This is a schematic structural diagram of multiple continuous molding devices of the utility model;

[0019] Figure 3 This is a schematic diagram of the outer surface structure of the convex roller and the concave roller of the utility model;

[0020] Figure 4 This is a schematic diagram of the surface structure changes of multiple convex rollers and concave rollers of the utility model;

[0021] Figure 5 This is a schematic diagram of the state change of the workpiece of the utility model when it is bent by the forming device;

[0022] Figure 6 This is a schematic diagram of the final shape of the workpiece processed by the forming device of the present invention.

[0023] In the figure: 1. Frame; 2. First mounting seat; 3. Convex roller; 4. Concave roller; 5. Second mounting seat; 6. Rotating shaft; 7. Lifting drive member; 8. Driving gear; 9. Driven gear; 10. R angle groove. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0025] The embodiment of the present application provides a blade battery shell tube forming device with an inner boss, which solves the problem that the aluminum strip is prone to lateral deviation in the initial rolling stage, and the bending amount and bending angle on both sides are difficult to control during the subsequent top surface bending, which easily leads to differences in left and right seam distances and heights at the welding gap of the shell after forming, affecting the welding operation.

[0026] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0027] The embodiment of the utility model discloses a blade battery shell tube forming device with an inner boss.

[0028] According to the attached Figure 1-6As shown, it includes multiple sets of continuously arranged frames 1, and multiple sets of frames 1 are all provided with convex rollers 3 and concave rollers 4 that cooperate with each other. A cavity for rolling the profile is formed between the convex rollers 3 and the concave rollers 4. Both sides of the cavity formed by the convex rollers 3 and the concave rollers 4 are provided with R angle grooves 10 for rolling out R angles on both sides of the profile, and a boss groove is provided in the middle to roll out an inner boss of the profile. The width of the cavity formed by the multiple sets of convex rollers 3 and the concave rollers 4 is set in a decreasing manner and the depth is set in an increasing manner, and the cavity gradually approaches a closed shape from an open arc shape, so that the closed part of the profile is in a slightly convex state after rolling, as shown in FIG. Figure 2 and 4 The state shown is a schematic diagram of the surface state of the convex roller 3 and the concave roller 4 during the change process. In actual application, the number of convex rollers 3 and concave rollers 4 is multiple, so that the surface morphology of the convex rollers 3 and concave rollers 4 changes from 3-A, 4-A to 3-B, 4-B, so that the processed aluminum strip can be formed as follows Figure 5 As shown, the flat substrate is gradually roll-formed into a wrap-like shell with a rectangular cross-section.

[0029] During use, the aluminum strip passes through multiple convex rollers 3 and concave rollers 4 in sequence, and the process boss is pressed out through the boss groove, which is used as a positioning to prevent the aluminum strip from deflecting during the continuous pressing process. The R-angle groove 10 with a continuously decreasing angle is used to gradually bring the two sides of the aluminum strip together towards the middle to form a shape, so that the horizontal distance and height of the welding point of the formed blade battery shell are maintained with precise control to ensure the welding quality.

[0030] The boss groove is composed of a process groove 32 arranged on the surface of the convex roller 3 and a process convex groove 42 arranged on the outer surface of the concave roller 4. The process grooves 32 are symmetrically arranged on the outer surfaces of both ends of the convex roller 3, and the two groups of process grooves 32 are close to the middle of the convex roller 3. The process convex grooves 42 are symmetrically arranged on the outer surfaces of both ends of the concave roller 4, and the two groups of process convex grooves 42 are close to the middle of the concave roller 4. The process grooves 32 and the process convex grooves 42 are both continuous rings.

[0031] The process grooves 32 and process convex grooves 42 on the surfaces of multiple continuously arranged convex rollers 3 and concave rollers 4 are arranged linearly, so that the process bosses formed on the surface of the aluminum strip can be used as reference positioning points for the movement of the aluminum strip to avoid left and right deviation during the movement of the aluminum strip. It is worth noting that when the cavity on the surface of the convex roller 3 gradually shrinks toward the middle and finally forms a complete inner cavity with the cavity on the surface of the concave roller 4, the process grooves 32 on the surface of the convex roller 3 disappear. At this time, the bottom of the aluminum strip is positioned by the process convex groove 42, and the top R angle of the aluminum strip is bent inward to offset the cavity on the surface of the convex roller 3, thereby performing continuous bending and forming, and at the same time, the aluminum strip will not be deflected.

[0032] The outer surface of the frame 1 is provided with a first mounting seat 2 and a second mounting seat 5, the convex roller 3 is installed in the first mounting seat 2, and the concave roller 4 is installed in the second mounting seat 5. The first mounting seat 2 is fixedly set at the bottom end of the frame 1, and the second mounting seat 5 is vertically slidably set at the upper end of the frame 1, so that the convex roller 3 can move up and down through the second mounting seat 5. On the one hand, it is convenient for the aluminum strip to enter between the convex roller 3 and the concave roller 4. On the other hand, the distance between the convex roller 3 and the concave roller 4 can be adjusted in a targeted manner during processing.

[0033] A lifting drive member 7 is installed on the top of the frame 1. The lifting drive member 7 is used to drive the second mounting base 5 to move up and down. In this embodiment, the lifting drive member 7 uses a hydraulic cylinder to perform hydraulic lifting.

[0034] A rotating shaft 6 is fixedly installed inside the convex roller 3 and the concave roller 4. The two sets of rotating shafts 6 are respectively set in the first mounting seat 2 and the second mounting seat 5. The outer ends of the two sets of rotating shafts 6 are respectively fixed with a driving gear 8 and a passive gear 9. The driving gear 8 and the passive gear 9 are meshed with each other and are transmitted through the driving gear 8 and the passive gear 9. By designing the gear ratio of the driving gear 8 and the passive gear 9, the linear speed of the contact and extrusion position of the convex roller 3 and the concave roller 4 is made the same.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A blade battery shell tube forming device with an inner boss, comprising a plurality of sets of continuously arranged frames (1), each of the plurality of frames (1) being provided with mutually cooperating convex rollers (3) and concave rollers (4), wherein a cavity for rolling a profile is formed between the convex rollers (3) and the concave rollers (4), and characterized in that: The mold cavity formed by the convex roller (3) and the concave roller (4) is provided with R-angle grooves (10) on both sides of the profile for rolling out R-angles on both sides, and a boss groove is provided in the middle for rolling out an inner boss on the profile. The width of the mold cavity formed by multiple groups of the convex rollers (3) and the concave rollers (4) is set in a decreasing manner and the depth is set in an increasing manner, and the open arc shape gradually approaches a closed shape, so that the closed part of the profile is in a slightly convex state after rolling.

2. The blade battery shell tube forming device with an inner boss according to claim 1, characterized in that: The boss groove is composed of a process groove (32) arranged on the surface of the convex roller (3) and a process convex groove (42) arranged on the outer surface of the concave roller (4).

3. The blade battery shell tube forming device with an inner boss according to claim 2, characterized in that: The process grooves (32) are symmetrically arranged on the outer surfaces of both ends of the convex roller (3), and the two groups of process grooves (32) are close to the middle of the convex roller (3).

4. The device for forming a blade battery shell tube with an inner boss according to claim 2, characterized in that: The process convex grooves (42) are symmetrically arranged on the outer surfaces of both ends of the concave roller (4), and the two groups of the process convex grooves (42) are close to the middle of the concave roller (4).

5. The blade battery shell tube forming device with an inner boss according to claim 2, characterized in that: The process groove (32) and the process protrusion groove (42) are both continuous ring-shaped.

6. The device for forming a blade battery shell tube with an inner boss according to claim 1, characterized in that: The outer surface of the frame (1) is provided with a first mounting seat (2) and a second mounting seat (5); the convex roller (3) is mounted in the first mounting seat (2), and the concave roller (4) is mounted in the second mounting seat (5).

7. The device for forming a blade battery shell tube with an inner boss according to claim 6, characterized in that: The first mounting seat (2) is fixedly arranged at the bottom end of the frame (1), and the second mounting seat (5) is vertically slidably arranged at the upper end of the frame (1).

8. The device for forming a blade battery shell tube with an inner boss according to claim 6, characterized in that: A lifting drive member (7) is installed on the top of the frame (1), and the lifting drive member (7) is used to drive the second mounting seat (5) to move up and down.

9. The device for forming a blade battery shell tube with an inner boss according to claim 6, characterized in that: Rotating shafts (6) are fixedly mounted inside the convex roller (3) and the concave roller (4), and two groups of rotating shafts (6) are respectively mounted on the first mounting seat (2) and the second mounting seat (5).

10. The blade battery shell tube forming device with an inner boss according to claim 9, characterized in that: The outer ends of the two groups of rotating shafts (6) are respectively fixed with a driving gear (8) and a driven gear (9), and the driving gear (8) and the driven gear (9) are meshed with each other.

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