KR101437823B1 - Spot welding machine for battery electrode plate assembly - Google Patents

Spot welding machine for battery electrode plate assembly Download PDF

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Publication number
KR101437823B1
KR101437823B1 KR1020140031914A KR20140031914A KR101437823B1 KR 101437823 B1 KR101437823 B1 KR 101437823B1 KR 1020140031914 A KR1020140031914 A KR 1020140031914A KR 20140031914 A KR20140031914 A KR 20140031914A KR 101437823 B1 KR101437823 B1 KR 101437823B1
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KR
South Korea
Prior art keywords
plate assembly
frame
spot welding
server motor
bracket
Prior art date
Application number
KR1020140031914A
Other languages
Korean (ko)
Inventor
정기세
Original Assignee
(주)제이엔엘테크
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Publication date
Application filed by (주)제이엔엘테크 filed Critical (주)제이엔엘테크
Priority to KR1020140031914A priority Critical patent/KR101437823B1/en
Application granted granted Critical
Publication of KR101437823B1 publication Critical patent/KR101437823B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/10—Spot welding; Stitch welding
    • B23K11/11—Spot welding
    • B23K11/115—Spot welding by means of two electrodes placed opposite one another on both sides of the welded parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/30—Features relating to electrodes
    • B23K11/3009—Pressure electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/30—Features relating to electrodes
    • B23K11/31—Electrode holders and actuating devices therefor
    • B23K11/311—Electrode holders and actuating devices therefor the actuating device comprising an electric motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/36—Auxiliary equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/02—Carriages for supporting the welding or cutting element
    • B23K37/0241—Attachments between the welding or cutting element and the carriage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J15/00—Gripping heads and other end effectors
    • B25J15/02—Gripping heads and other end effectors servo-actuated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00—Metal working
    • Y10S29/013—Method or apparatus with electric heating

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Robotics (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Resistance Welding (AREA)

Abstract

The present invention relates to a spot welding machine for a storage battery pole plate assembly and, more specifically, to a spot welding machine for a storage battery pole plate assembly using direct operation using a server motor or indirect operation having a belt, and for reciprocating an operating rod without a link structure. According to the present invention, the spot welding machine for a storage battery pole plate assembly, capable of spot welding connection terminals (6) of a pole plate assembly (4) arranged to be adjacent to a storage battery from both sides, comprises a frame (10) functioning as a supporting stand; a server motor (20) combined with one side of the frame (10), and rotated by a control signal; a noise protecting cover (12) combined with the frame (10) to protect the server motor (20) from an outside electrical noise; a belt (22) for interlocking a driving pulley (21) of the server motor (20) with a driven pulley (23) of a transfer shaft (24); the transfer shaft (24) connected with the belt (22) to transfer a transfer bracket (31) horizontally; a horizontal supporting stand (11) combined with both sides of the frame (10) to guide the transfer bracket (31) to move horizontally; the transfer bracket (31) whose moving path is guided by the horizontal supporting stand (11), and moved horizontally by rotation of the transfer shaft (24); and a welding operating rod (30) combined with the lateral side of the transfer bracket (31), and arranged to face the transfer bracket (31).

Description

[0001] The present invention relates to a spot welding machine for a battery electrode plate assembly,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spot welding apparatus for a battery electrode plate assembly, and more particularly, to a spot welding apparatus for a battery electrode plate assembly using a server motor and an indirect operation method using a server motor or a belt, To a spot welding apparatus for a battery electrode plate assembly.

In a battery, a plurality of battery plate assemblies are connected using spot welding.

In the prior art, Korean Patent No. KR 10-1145043 discloses a technique for preventing interference with the internal structure of a battery case during welding in a hydraulic cylinder and a link structure interlocked with the hydraulic cylinder. However, It has limitations. As shown in FIG. 3, the above-described technique includes a first operation rod A fixed to an end portion of the horizontal guide rod and a movement rod A moving along the horizontal guide rod. The tolerance of the movement rod A and the bushing Secondly, only one side portion is pressurized to cause warpage of the piston rod (B) due to a particular eccentric compression pressure of spot welding. Thirdly, maintenance of the piston rod (B) is difficult due to a complicated link structure Long-term continuous welding quality can not be guaranteed.

In spot welding, it is very important to maintain a constant pressure on the welding rod to ensure homogeneous welding quality, and it is difficult to keep constant pressure in an operating system using hydraulic or pneumatic. Since the pneumatic pressure utilizes the compressible air, it is impossible to realize a substantially constant pressurizing pressure, and the hydraulic pressure can not quickly respond to the thickness of the plate assembly, but is pressurized with a large pressure.

In addition, a complicated link structure requires careful maintenance such as lubrication and wear check of the link portion.

Therefore, there is a need for a spot welding apparatus that does not use a complicated link structure and that maintains a constant pressure pressure in response to a change in thickness of a battery plate assembly.

1. KR 10-1145043, 'Small Port Welding Device for Connection Terminal of Battery Plate Assembly', Registration Date: May 10, 2012. 2. JP 03243278 A 3. JP 07284953 A

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a spot welding apparatus for a battery electrode plate assembly having only a simple transfer means for horizontally moving the operating rod by eliminating a complicated link structure, to be.

It is another object of the present invention to provide a spot welding apparatus for a direct-drive or indirect-drive type electrode plate assembly using a server motor so as to quickly respond to changes in the thickness of the electrode plate assembly and to achieve a constant pressure in the weld .

In order to accomplish the above object, the present invention provides a spot welding apparatus for a battery electrode plate assembly for spot-welding connection terminals (6) of an electrode plate assembly (4) arranged close to a battery from both sides, ; A server motor (20) fastened to one side of the frame (10) and rotated by a control signal; A noise prevention cover (12) fastened to the frame (10) for protecting the server motor (10) from external electrical noises; A belt 22 for interlocking the drive pulley 21 of the server motor 20 with the driven pulley 23 of the feed shaft 24; A transfer shaft (24) connected to the belt (22) for horizontally moving the transfer bracket (31); A horizontal support 11 fastened to both sides of the frame 10 to guide horizontal movement of the conveying bracket 31; A conveyance bracket 31 guided by the horizontal support 11 and horizontally moved by rotation of the conveyance shaft 24; And a welding operation rod (30) which is coupled to the side portion of the transporting bracket (31) and arranged to face the transporting bracket (31).

The present invention also provides a spot welding apparatus for a battery electrode plate assembly that is directly connected to a server motor (10) and a feed shaft (24) with a coupler or the like removed therefrom.

The present invention is also intended to provide a spot welding apparatus for a battery electrode plate assembly having a structure in which the noise prevention cover 12 completely seals the server motor 10 for stable operation of the server motor 10. [

Due to the above-mentioned solution, the present invention has the following effects.

First, a simple structure of the conveying shaft 24, the conveying bracket 31, and the server motor 10, without using a complicated link structure, reduces mechanical loss and facilitates maintenance.

Second, since the moving distance of the working rod can be secured only by adjusting the length of the transfer shaft 24, the transfer width of the welding apparatus can be further extended, so that it is possible to easily cope with the thickness variation of the electrode plate assembly.

Third, since the server motor 10 is provided, the control program can be easily set when the size of the electrode plate assembly varies, and the setting time is significantly shortened as compared with the conventional technology.

Fourth, the welding apparatus is not eccentric on the basis of the electrode plate assembly, and the center of gravity is constant at the center, so that welding can be stably performed for a long time.

Fifth, by using the server motor 10, the same welding pressure can be uniformly applied even when the thickness of the plate assembly is changed.

1 is a cross-sectional view of a preferred embodiment of the present invention
2 is a side view of a preferred embodiment of the present invention
Fig. 3 is a detailed view of the inside of the battery.
Fig. 4 is a cross-sectional view of a conventional spot welding apparatus

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In order to clearly illustrate the present invention, parts not related to the description are omitted.

As one example, the vertical transfer device of the frame, the welding tip, etc. are omitted from the technical content of the present invention.

Like reference numbers are used throughout the specification to refer to the same or like parts. In addition, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of explanation, and the present invention is not necessarily limited to those shown in the drawings. In the drawings, the thickness is enlarged to clearly show various parts and regions. In the drawings, for the sake of convenience, the thicknesses of some portions and regions are exaggerated.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spot welding apparatus for a battery electrode plate assembly, and more particularly, to a spot welding apparatus for a battery electrode plate assembly using a server motor and a direct operation using the server motor or an indirect operation system including a belt, To a spot welding apparatus for a battery electrode plate assembly.

3, the electrode assembly 4 is inserted into a plurality of compartments 3 defined by the diaphragm 2 in the interior of the battery case 1. As shown in Fig. In the diaphragm 2, through holes 5 are alternately formed on both sides of the upper portion. A connection terminal 6 for electrically connecting each of the electrode plate assemblies 4 accommodated in the battery case 1 is formed at an upper portion of the electrode plate assembly 4. The connection terminal 6 has a horizontal part 7 fixed to the electrode plate assembly 4 and a vertical part 8 vertically installed at one side of the horizontal part 7. When the electrode plate assembly 4 is accommodated in the compartment 3, the adjacent electrode plate assemblies 4 are arranged such that the vertical portions 8 of the connection terminals 6 thereof are arranged close to the through-holes 5 of the diaphragm 2 It is possible to become. The vertical portion 8 of the side connection terminals 6 facing and opposed to the through hole 5 of the diaphragm 2 is pressed against the through hole 5 while a tip of the spot welder is pressed from both sides, And the connection terminals 6 of the respective electrode plate assemblies 4 are electrically connected to each other.

The present invention relates to a spot welding apparatus for a battery electrode plate assembly for spot welding the connection terminals 6 of the closely spaced electrode plate assemblies 4 from both sides to electrically connect the connection terminals 6 of the respective electrode plate assemblies 4 .

FIG. 1 is a sectional view of a preferred embodiment of the present invention, and FIG. 2 is a side view of a preferred embodiment of the present invention.

As shown in Figs. 1 and 2, the present invention is a spot welding apparatus for a battery electrode plate assembly for spot welding the connection terminals 6 of the closely disposed electrode assembly 4 of the battery from both sides, )and; A server motor (20) fastened to one side of the frame (10) and rotated by a control signal; A noise prevention cover (12) fastened to the frame (10) for protecting the server motor (10) from external electrical noises; A belt 22 for interlocking the drive pulley 21 of the server motor 20 with the driven pulley 23 of the feed shaft 24; A transfer shaft (24) connected to the belt (22) for horizontally moving the transfer bracket (31); A horizontal support 11 fastened to both sides of the frame 10 to guide horizontal movement of the conveying bracket 31; A conveyance bracket 31 guided by the horizontal support 11 and horizontally moved by rotation of the conveyance shaft 24; And a welding operation rod 30 which is fastened to the side portion of the conveying bracket 31 and arranged to face each other.

The fastening portion of the server motor 10 preferably includes a slatter and includes a belt tension adjusting device 13 for adjusting the belt tension by changing the position of the server motor.

The belt 22 is preferably composed of a timing belt in order to realize a precise travel distance of the operating rod 30, and may be replaced with a chain or a link gear.

The drive pulley 21 is coupled to the drive shaft of the server motor 10 and a sprocket is formed on the outer circumferential portion of the belt 22 to control the precision rotation angle.

The driven pulley 23 transmits the driving force of the server motor 10 to the conveying shaft 24 via the belt 22 and is fastened to the end of the conveying shaft 24.

The transfer shaft 24 is supported at both ends of the frame 10 and preferably has a bearing for smooth rotation. The ball screw type ball screw type is used to form a left screw and a male screw groove around the center. Further, in the transfer shaft 24, a support unit having a ball screw assembly bearing and a ball screw support unit is fastened to the transfer bracket 31 to move the rotational force of the transfer shaft 24 in the horizontal linear direction.

The horizontal support 11 is supported at both ends of the frame 10 and has a guiding function to smoothly move the conveying bracket 31 horizontally.

The conveying bracket 31 is connected to the horizontal support 11 and includes a bushing in the connection part. And is coupled with the support unit of the transfer shaft 24 to move horizontally. In addition, it is preferable to arrange a symmetrical structure for spot welding.

The operation rod 30 is fastened to one side of the transfer bracket 31 and is fastened with a welding tip (not shown) at an end thereof for spot welding.

The present invention is characterized in that the server motor (10) and the feed shaft (24) are directly connected to simplify the structure.

In addition, the present invention is characterized in that, in order to stably operate the server motor 10, the noise prevention cover 12 has a structure for completely sealing the server motor 10.

The biggest disadvantage of spot welding using a hydraulic cylinder of the prior art is that it is difficult to maintain a constant pressing force of the spot welded portion.

Generally, an accumulator is used to absorb pulsation or vibration generated in a hydraulic circuit, and the operation of the accumulator has an operation delay. Thereby, there is a limit in quickly responding to a gap tolerance of the electrode plate assembly or a change in thickness.

Therefore, in order to solve the disadvantage of the hydraulic circuit, the present invention discloses a technique for coping with the constant current or the constant voltage by the server motor 10.

With the above arrangement, the present invention has the following effects.

First, a simple structure of the conveying shaft 24, the conveying bracket 31, and the server motor 10, without using a complicated link structure, reduces mechanical loss and facilitates maintenance.

Secondly, since the moving distance of the operating rod 30 can be secured only by adjusting the length of the conveying shaft 24, the conveying width of the welding apparatus can be further extended, so that the thickness of the electrode plate assembly 4 can be easily accommodated.

Third, since the server motor 10 is provided, the control program can be easily set when the size of the electrode plate assembly 4 is changed, and the setting time is significantly shortened as compared with the conventional technology.

Fourth, the welding apparatus is not eccentric on the basis of the electrode plate assembly 4, and the center of gravity is constant and can be stably welded for a long time.

Fifth, by using the server motor 10, the welding pressurizing pressure can be uniformly realized even when the thickness of the electrode plate assembly 4 is changed.

1: battery case 2: diaphragm 3: compartment 4: electrode plate assembly 5: through hole 6: connection terminal 7: horizontal portion 8:
10: frame, 11: horizontal support, 12: noise prevention cover, 13: belt tension adjusting device
20: Servo motor, 21: Drive pulley, 22: Belt, 23: Passive pulley, 24: Feed shaft
30: Working rod, 31: Feeding bracket

Claims (3)

In a spot welding apparatus for a battery electrode plate assembly for spot welding the connection terminals 6 of the electrode plate assembly 4 arranged close to the battery from both sides,
A frame 10 serving as a support;
A server motor (20) fastened to one side of the frame (10) and rotated by a control signal;
A noise prevention cover (12) fastened to the frame (10) for protecting the server motor (10) from external electrical noises;
A belt 22 for interlocking the drive pulley 21 of the server motor 20 with the driven pulley 23 of the feed shaft 24;
A transfer shaft (24) connected to the belt (22) for horizontally moving the transfer bracket (31);
A horizontal support 11 fastened to both sides of the frame 10 to guide horizontal movement of the conveying bracket 31;
A conveyance bracket 31 guided by the horizontal support 11 and horizontally moved by rotation of the conveyance shaft 24;
And a welding operation rod (30) fastened to the side of the transfer bracket (31) and arranged to face each other.
In a spot welding apparatus for a battery electrode plate assembly for spot welding the connection terminals 6 of the electrode plate assembly 4 arranged close to the battery from both sides,
A frame 10 serving as a support;
A server motor (20) fastened to one side of the frame (10) and rotated by a control signal;
A noise prevention cover (12) fastened to the frame (10) for protecting the server motor (10) from external electrical noises;
A conveying shaft (24) fastened to the server motor (20) via a coupler and horizontally moving the conveying bracket (31);
A horizontal support 11 fastened to both sides of the frame 10 to guide horizontal movement of the conveying bracket 31;
A conveyance bracket 31 guided by the horizontal support 11 and horizontally moved by rotation of the conveyance shaft 24;
And a welding operation rod (30) fastened to the side of the transfer bracket (31) and arranged to face each other.
3. The method according to claim 1 or 2,
Wherein the noise prevention cover (12) has a structure for completely sealing the server motor (10).
KR1020140031914A 2014-03-19 2014-03-19 Spot welding machine for battery electrode plate assembly KR101437823B1 (en)

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KR1020140031914A KR101437823B1 (en) 2014-03-19 2014-03-19 Spot welding machine for battery electrode plate assembly

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Application Number Priority Date Filing Date Title
KR1020140031914A KR101437823B1 (en) 2014-03-19 2014-03-19 Spot welding machine for battery electrode plate assembly

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104588859A (en) * 2015-02-10 2015-05-06 姜利 Semi-automatic welding table for photovoltaic module junction box
KR20190128351A (en) 2018-05-08 2019-11-18 최보름 Apparatus for Welding of Storage Battery
KR20200039139A (en) 2018-10-05 2020-04-16 최보름 device for strap junction of storage battery
CN112705829A (en) * 2020-12-17 2021-04-27 山东正能电池有限公司 Automatic spot welding machine for battery production

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11197845A (en) * 1998-01-19 1999-07-27 Ishikawajima Harima Heavy Ind Co Ltd Spot welding equipment
KR100440324B1 (en) 2002-03-25 2004-07-15 현대자동차주식회사 Welding apparatus for bus roof
KR101269945B1 (en) 2011-11-18 2013-05-31 세방전지(주) Automatic welding aparatus for battery
JP2013188783A (en) 2012-03-15 2013-09-26 Kyoho Mach Works Ltd Two shot spot welding equipment and spot welding robot

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11197845A (en) * 1998-01-19 1999-07-27 Ishikawajima Harima Heavy Ind Co Ltd Spot welding equipment
KR100440324B1 (en) 2002-03-25 2004-07-15 현대자동차주식회사 Welding apparatus for bus roof
KR101269945B1 (en) 2011-11-18 2013-05-31 세방전지(주) Automatic welding aparatus for battery
JP2013188783A (en) 2012-03-15 2013-09-26 Kyoho Mach Works Ltd Two shot spot welding equipment and spot welding robot

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104588859A (en) * 2015-02-10 2015-05-06 姜利 Semi-automatic welding table for photovoltaic module junction box
KR20190128351A (en) 2018-05-08 2019-11-18 최보름 Apparatus for Welding of Storage Battery
KR20200039139A (en) 2018-10-05 2020-04-16 최보름 device for strap junction of storage battery
KR102140556B1 (en) 2018-10-05 2020-08-03 최보름 device for strap junction of storage battery
CN112705829A (en) * 2020-12-17 2021-04-27 山东正能电池有限公司 Automatic spot welding machine for battery production

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