KR20200128951A - Apparatus for trimming battery case for electric vehicle - Google Patents

Abstract

The present invention relates to a battery case trimming device for an electric vehicle. More particularly, the present invention relates to a battery case trimming device for an electric vehicle, which may shorten the trimming processing time and improve the quality of a produced battery case since both ends of the battery case in a rectangular tube shape can be processed at the same time while the battery case is firmly fixed. To this end, the battery case trimming device for an electric vehicle comprises: a rotating shaft provided to be horizontal and spaced apart from an upper surface of a worktable and rotated by a motor; a rotating body provided on the rotating shaft, wherein a battery case of a rectangular tube shape with empty inside and open both ends is inserted to the outside of the rotating body; a milling unit which is provided to have milling cutters positioned at both ends of the battery case inserted to the rotating body to cut both ends of the battery case so that the battery case has an appropriate length; and a chamfering unit provided so as to position chamfering bites on both ends of the battery case fitted to the rotating body to chamfer inner corners on both ends of the battery case. Accordingly, the battery case inserted to the rotating body rotates according to the rotation of the rotating shaft, and both ends of the battery case are simultaneously cut and chamfered by the milling unit and the chamfering unit.

Description

Apparatus for trimming battery case for electric vehicle

The present invention relates to a battery case trimming device for an electric vehicle, and more particularly, to a battery case trimming device for an electric vehicle capable of shortening the trimming time and producing a battery case of improved quality.

Since electric vehicles require long-time driving and high-power driving, a large-capacity battery module is formed by electrically connecting a plurality of battery cells to increase output and capacity. The battery module can increase the output voltage or output current according to the number of built-in battery cells. In addition, a plurality of such battery modules may be electrically connected to form a battery pack, and the battery pack is inserted into a battery case and installed in an electric vehicle.

The battery case is generally made of aluminum (Al) material, and is manufactured in a cylindrical shape in consideration of the shape of the battery pack. Accordingly, most battery cases for electric vehicles are manufactured in the shape of a square tube. Looking at the process of manufacturing such a battery case, it is extruded into a long square tube and then cut to have a length slightly longer than the length of the battery case to be produced. This is because when cutting, the both ends of the battery case do not form a right angle, so an additional milling process is required. Therefore, after that, the battery case cut to a predetermined length is produced as a finished product through a process of milling both ends and a chamfering process of inner corners of both ends.

However, since there is no trimming device capable of performing the milling process and the chamfering process at the same time, the milling process and the chamfering process must be separately performed. In particular, since both ends of the battery case must be processed, one end located on the upper side is processed. Then, after separating the battery case from the milling or chamfering device, the other end is placed on the upper side to perform processing, and there is a problem that it takes a lot of time to perform such a trimming process.

In addition, when trimming, the inside and outside of the battery case must be firmly fixed, but it is difficult to grip the battery case formed with a thin thickness in a firmly fixed state, and thus shaking occurs, so that processing quality is deteriorated.

1. Korean Patent Registration No. 10-1600890'Trimming device of aluminum case for large battery'

The present invention is to solve the above problems, and it is possible to process both ends at the same time while the battery case in the shape of a square tube is firmly fixed, so that the trimming processing time can be shortened and the battery case of improved quality can be produced. An object of the present invention is to provide a battery case trimming device.

A battery case trimming device for an electric vehicle according to the present invention for achieving the above object comprises: a rotary shaft provided to be horizontal and spaced apart from the upper surface of a worktable and rotated by a motor; A rotating body provided on the rotating shaft to which a battery case having a rectangular cylindrical shape with an empty inside and open both ends is inserted on the outside; A milling part for cutting both ends of the battery case so that each of the milling cutters is positioned at both ends of the battery case inserted into the rotating body, so that the battery case has an appropriate length; And a chamfering processing unit provided so that chamfering bites are positioned on both ends of the battery case fitted in the rotating body to chamfer inner corners of both ends of the battery case; including, a battery inserted into the rotating body according to the rotation of the rotating shaft. The case rotates, and both ends of the battery case are cut and chamfered at the same time by the milling part and the chamfering part.

In addition, the milling part may be provided so as to be movable in the vertical, left and right directions from the upper side of the rotation shaft, and the chamfering part may be provided so as to be movable from the rear of the rotation shaft in the front-rear direction.

In addition, the motor is provided at one end of the rotating shaft, and the upper one side is coupled to the center of the other end of the rotating shaft to stably rotate the rotating shaft support so as to be movable in the vertical direction on the work table, the rotating shaft support is In a downwardly moving state, the battery case may be fitted into the rotating body and then moved upward to be coupled with the rotating shaft.

In addition, it further includes a conveyor provided on the upper surface of the worktable in a transverse direction so that a part of the worktable protrudes outward from the front of the rotational shaft while having a predetermined length, wherein the conveyor Since the earth is provided, the battery case held by the gripper from the outside can be fitted into the rotating body according to the movement of the gripper.

In addition, the rotating body has a rectangular cylindrical shape having a length shorter than that of the battery case, and both ends of the battery case are fitted to protrude from the rotating body, and an air cylinder is provided inside to expand the rotating body to clamp the battery case inserted on the outside. can do.

According to the present invention, the battery case in the shape of a square tube rotates while being firmly fixed by the rotating body, and the both ends are trimmed by the milling part and the chamfering part, so that a battery case of improved quality can be produced.

In addition, cutting and chamfering corresponding to trimming are simultaneously performed by the milling and chamfering parts provided at both ends of the battery case, so cutting and chamfering are not separately performed, and the battery case is separated from the device during processing. Since the trimming operation is not required, the trimming processing time can be shortened, thereby increasing productivity.

1 and 2 are views showing the structure of a battery case trimming device for an electric vehicle according to the present invention,
3 is a view showing a state in which a rotating shaft, a motor, and a rotating body applied to the battery case trimming device for an electric vehicle according to the present invention are combined;
4 and 5 are views showing a state in which a rotation shaft applied to a battery case trimming device for an electric vehicle according to the present invention is supported by a rotation shaft support,
6 is a view showing the structure of a gripper applied to the battery case trimming device for an electric vehicle according to the present invention;
7 is a view showing a state in which the milling part and the chamfering part applied to the battery case trimming device for an electric vehicle according to the present invention are provided on both ends of the battery case;
8 is a view showing a state provided with a milling cutter applied to the battery case trimming device for an electric vehicle according to the present invention;
9 is a view showing a state in which the milling part and the chamfering part applied to the battery case trimming device for an electric vehicle according to the present invention are coupled to the moving module;
10 is a view showing a state in which a dust collecting hole applied to the battery case trimming device for an electric vehicle according to the present invention is provided;
11 is a view showing a state in which a chamfering bite applied to the battery case trimming device for an electric vehicle according to the present invention is provided;
12 is a view showing a state in which a cover and a door are applied to the battery case trimming device for an electric vehicle according to the present invention.

In the present invention, it is possible to process both ends at the same time while the battery case in the shape of a square tube is firmly fixed, so that the trimming processing time can be shortened and the motor is provided to be spaced apart from the upper surface of the workbench so as to produce a battery case of improved quality. A rotating shaft rotated by; A rotating body provided on the rotating shaft to which a battery case having a rectangular cylindrical shape with an empty inside and open both ends is inserted on the outside; A milling part for cutting both ends of the battery case so that each of the milling cutters is positioned at both ends of the battery case inserted into the rotating body, so that the battery case has an appropriate length; And a chamfering processing unit provided so that chamfering bites are positioned on both ends of the battery case fitted in the rotating body to chamfer inner corners of both ends of the battery case; including, a battery inserted into the rotating body according to the rotation of the rotating shaft. A battery case trimming device for an electric vehicle, characterized in that the case rotates and both ends of the battery case are simultaneously cut and chamfered by a milling part and a chamfering part.

The scope of the present invention is not limited to the embodiments described below, and various modifications may be made by those of ordinary skill in the art without departing from the technical gist of the present invention.

Hereinafter, an apparatus for trimming a battery case for an electric vehicle according to the present invention will be described in detail with reference to FIGS. 1 to 12.

The battery case trimming device for an electric vehicle according to the present invention is capable of trimming a battery case 10 in which a battery pack for an electric vehicle can be accommodated in the shape of a square tube with an empty inside and open both ends. As shown in FIG. 12, it includes a rotating shaft 100, a rotating body 300, a milling part 400, and a chamfering part 500.

As shown in Figs. 1 and 2, the rotating shaft 100 is formed in a bar shape and installed on the work table A so that it is horizontal, and the upper surface of the work table A has a predetermined height for convenience by the operator. It may be formed to achieve, and the rotation shaft 100 is provided to be spaced apart from the upper surface of the work table (A). This rotation shaft 100 is rotated by the motor 200 provided on the work table (A).

As shown in FIG. 3, the rotation shaft 100 may be provided so that only one end is coupled to the motor 200 so that the battery case 10 can be easily fitted to the rotating body 300 to be described later. That is, the motor 200 is provided at one end of the rotation shaft 100. In this way, when the rotation shaft 100 coupled to the motor 200 rotates, shaking may occur or sagging of the rotation shaft 100 may occur. To prevent this, the rotation shaft 100 as shown in FIGS. 4 and 5 ) May be provided on the worktable (A) with a rotating shaft support 600 supporting the other end of the).

The rotation shaft support 600 is provided so that the upper one side is coupled to the center of the other end of the rotation shaft 100 so that the rotation shaft 100 rotates stably, and is provided to be movable in the vertical direction on the work table A to support the rotation shaft 100 At the same time, it is possible to prevent interference with the battery case 10 being fitted into the rotating body 300 to be described later.

That is, the rotating shaft support 600 may be fitted with the rotating body 300 while the battery case 10 is moved downward, and then moved upward to be coupled to the rotating shaft 100. For the vertical movement of the rotary shaft support 600, the rotary shaft support 600 may be provided with a pneumatic cylinder below, and the pneumatic cylinder may be installed inside the worktable (A).

On the other hand, in order to eliminate the inconvenience of the operation that the operator inserts into the rotating body 300 to be described later, the battery case 10 is held by holding the battery case 10 from the outside of the work table A as shown in FIG. A conveyor 700 for inserting the battery case 10 to the rotating body 300 by moving the battery case 10 onto the work table A may be provided.

As an example, the conveyor 700 may have a predetermined length and may be provided on the upper surface of the work table A in a transverse direction so that a part of the conveyor 700 protrudes outward from the work table A from the front of the rotation shaft 100. In addition, the conveyor 700 may be provided with a gripper 710 capable of gripping the side of the battery case 10 on the upper side. In order to stably grip the battery case 10 in the shape of a square tube, the gripping tool 710 has a gripping part forming a'C' shape as shown in FIG. 6 along one side of the battery case 10 along the height direction. It is preferable to wrap and grip, and in consideration of the length of the battery case 10, a plurality of gripping units may be provided at predetermined intervals.

The battery case 10 gripped from the outside of the work table A by the gripping tool 710 is moved onto the work table A according to the movement of the gripping tool 710 that is moved along the conveyor 700 and the rotation shaft ( 100) is fitted to the outside of the rotating body 300 provided on the rotating shaft 100 while passing through both ends.

The aforementioned rotating body 300 is provided on the rotating shaft 100 as shown in FIG. 3, and has a shape in which the battery case 10 is fitted outside, and may be formed in various shapes. As an example, the rotating body 300 may be formed to have a square tube shape having the same shape as the battery case 10, as shown in FIG. 3, and is formed to have a shorter length than the battery case 10, so that the battery case Both ends of (10) can be fitted so as to protrude from the rotating body (300).

In addition, the rotating body 300 forming a square cylindrical shape may be configured to be inflated by the air cylinder 310 provided therein. Therefore, the rotating body 300 is in a state in which the battery case 10 is inserted outside, and then the air cylinder 310 is operated and inflated, thereby forming a state in tight contact with the battery case 10 and clamping the battery case 10. do. In this way, the battery case 10 which is firmly fixed by the rotating body 300 rotates together with the rotating body 300 according to the rotation of the rotating shaft 100.

The milling part 400 is provided so that the milling cutters 410 are positioned at both ends of the battery case 10 fitted in the rotating body 300 as shown in FIGS. 7 and 8. The milling cutter 410 is rotated by a motor and cuts both ends of the battery case 10 so that the battery case 10 has an appropriate length. That is, the battery case 10 inserted into the rotating body 300 before being processed by the milling cutter 410 is cut to have a predetermined length, but does not have an accurate length and the cut ends are uneven. It is processed so that both ends can have an even cutting line while having an accurate length through the milling cutter 410.

The milling cutter 410 may be provided at the lower end of the milling processing unit 400, and the milling processing unit 400 may be provided on the support 900 erected on the work table A, and may be provided on the upper side of the rotating shaft 100. have. In addition, the battery case 10 is rotated and processed, so that the milling cutter 410 can be positioned along the edges of both ends of the battery case 10, the milling processing unit 400 is a moving module provided on the support 900 ( 800) is preferably provided so as to be movable in the vertical, left and right directions. In this case, the support 900 includes a support plate perpendicular to the upper portion, and a moving module 800 for moving the milling part 400 may be coupled to the support plate.

As an example, as shown in FIG. 9, a moving module 800 is installed on the support plate of the support plate in the left-right direction, and the moving module 800 moves in the left-right direction. The module 800 is installed, and the milling part 400 may be coupled to the front of the moving module 800 that is movable in the vertical direction.

In addition, as shown in FIG. 10, a dust collecting port 420 may be provided adjacent to the milling cutter 410 to suck dust generated during processing. The milling cutter 410 may be surrounded by a dust collection tube except for the side facing the battery case 10, and this dust collection tube is in communication with the dust collection port 420, and is processed by the milling cutter 410. Accordingly, the generated dust can be prevented from getting on the battery case 10.

The chamfering part 500 is provided so that the chamfering bites 510 are positioned at both ends of the battery case 10 fitted in the rotating body 300 as shown in FIGS. 7, 9 and 11. The chamfering bite 510 is rotated by a motor and chamfered the inner corners of both ends of the battery case 10. That is, the inner edge of the battery case 10 that is inserted into the rotating body 300 before being processed by the chamfering bite 510 has an angular shape, but is chamfered in consideration of easy insertion and installation of the battery pack. Through the bite 510, the inner edge is processed to form a round shape.

The chamfering bite 510 may be provided at the front end of the chamfering processing unit 500 as shown in FIG. 11, and at this time, the chamfering bite 510 is provided to be parallel to the longitudinal direction of the battery case 10. desirable. The chamfering part 500 may be provided on the worktable A to be located at the rear of the rotating shaft 100, and the chamfering bite 510 may be located at the inner corner of the rotating battery case 10. It is preferable that the ring processing part 400 is provided to be movable in the front and rear, left and right directions by a moving module 800 provided on the work table A.

As an example, as shown in FIG. 9, a moving module 800 is installed on the upper surface of the work table A, which can be moved in the left and right direction, and is moved forward and backward on the upper side of the moving module 800, which can be moved in the left and right direction The module 800 is installed, and the chamfering part 500 may be coupled to an upper side of the moving module 800 that is movable in the front-rear direction. At this time, it is preferable that the support 900 has an open portion formed from the lower end of the support plate to the work table A so as not to cause interference with the chamfering bite 510 and the moving module 800 moving the same.

And, although not shown, like the dust collecting port 420 provided in the milling processing unit 400, a dust collecting port for sucking dust generated during processing is provided adjacent to the chamfering bite 510, and the chamfering bite ( Dust generated by processing by 510 can be prevented from getting on the battery case 10.

On the other hand, as shown in Fig. 12, a cover 20 is provided that can cover the side and upper surface of the configuration provided on the work table A, and a door 30 that can be opened and closed at the front side of the work table A. As a result, it is possible to prevent foreign substances from getting into the processed battery case 10 and at the same time preventing dust generated during processing from being discharged to the outside. In addition, the cover 20 and the door 30 may be provided with a transparent observation window for the operator to check the processing state of the battery case 10 and the operating state of the configuration constituting the present invention.

The battery case trimming device for an electric vehicle of the present invention described above rotates while the battery case 10 in the shape of a square tube is firmly fixed by the rotating body 300 and is applied to the milling part 400 and the chamfering part 500. Accordingly, since both ends are trimmed, the battery case 10 of improved quality can be produced. In addition, since cutting and chamfering corresponding to trimming are simultaneously performed by the milling processing unit 400 and the chamfer processing unit 500 provided at both ends of the battery case 10, cutting processing and chamfering processing are not separately performed. , Since it is not necessary to separate the battery case 10 from the device during processing, the trimming processing time can be shortened, thereby increasing productivity.

A: Worktable
10: battery case 20: cover
30: door
100: rotary shaft 200: motor
300: rotating body 310: air cylinder
400: milling part 410: milling cutter
420: dust collector
500: chamfering processing part 510: chamfering bite
600: rotary shaft support 700: conveyor
710: gripping area 800: moving module
900: support

Claims (5)

A rotating shaft 100 provided to be horizontal while being spaced apart from the upper surface of the worktable A and rotated by the motor 200;
A rotating body 300 which is provided on the rotation shaft 100 and into which a battery case 10 having a rectangular cylindrical shape with an empty inside and open both ends is fitted to the outside;
Milling cutters 410 are provided at both ends of the battery case 10 fitted in the rotating body 300 so that the both ends of the battery case 10 are cut so that the battery case 10 has an appropriate length. Milling processing unit 400; And
Chamfering processing portions 500 provided to respectively have chamfering bites 510 positioned at both ends of the battery case 10 fitted in the rotating body 300 to chamfer the inner corners of both ends of the battery case 10; including,
The battery case 10 inserted into the rotating body 300 rotates according to the rotation of the rotating shaft 100, and both ends of the battery case 10 are simultaneously cut and processed by the milling processing unit 400 and the chamfering processing unit 500. Battery case trimming device for an electric vehicle, characterized in that chamfering is performed. The method of claim 1,
The milling part 400 is provided to be movable in the vertical direction from the upper side of the rotation shaft 100,
The chamfering processing unit 500 is a battery case trimming device for an electric vehicle, characterized in that provided to be movable from the rear of the rotation shaft 100 in the front and rear, left and right directions. The method of claim 1,
The motor 200 is provided at one end of the rotation shaft 100,
An upper one side is coupled to the center of the other end of the rotation shaft 100 so that the rotation shaft support 600 for stably rotating the rotation shaft 100 is provided to be movable in the vertical direction on the work table A,
The rotating shaft support 600 is a battery case trimming device for an electric vehicle, characterized in that the battery case 10 is inserted into the rotating body 300 while being moved downward, and then moved upward and coupled to the rotating shaft 100 . The method of claim 3,
It further includes a conveyor 700 provided on the upper surface of the work table A in a transverse direction so that a part of the rotation shaft 100 protrudes outward from the work table A while having a predetermined length,
The conveyor 700 is provided with a gripper 710 capable of gripping the side of the battery case 10 on the upper side, and the battery case 10 gripped by the gripper 710 from the outside is provided with the gripper 710 ) According to the movement of the battery case trimming device for an electric vehicle, characterized in that it is fitted into the rotating body (300). The method of claim 1,
The rotating body 300 has a rectangular cylindrical shape having a length shorter than that of the battery case 10 so that both ends of the battery case 10 protrude from the rotating body 300, and an air cylinder 310 is provided inside. A battery case trimming device for an electric vehicle, characterized in that the rotating body 300 is expanded to clamp the battery case 10 fitted to the outside.

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