CN110576248B - Micro-resistance welding butt welder - Google Patents
Micro-resistance welding butt welder Download PDFInfo
- Publication number
- CN110576248B CN110576248B CN201910822904.5A CN201910822904A CN110576248B CN 110576248 B CN110576248 B CN 110576248B CN 201910822904 A CN201910822904 A CN 201910822904A CN 110576248 B CN110576248 B CN 110576248B
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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
- B23K11/02—Pressure butt welding
-
- 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
-
- 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
Abstract
The invention discloses a micro-resistance welding butt welding machine, which comprises a micro-resistance welding host and a butt welding head which are electrically connected, wherein the butt welding head comprises a bottom plate, an electrode chuck base connected with the bottom plate and a head frame arranged on the bottom plate through an upright post, the head frame is provided with a front sliding shaft and a middle shaft, the front sliding shaft is provided with an upper electrode chuck and a lower electrode chuck which are provided with electrode mounting holes side by side, the upper electrode chuck is arranged above the lower section of the front sliding shaft in a fastening mode, the lower electrode chuck is arranged below the lower section of the front sliding shaft in a sliding mode through a linear sliding bearing and is fastened on the electrode chuck base, and the upper electrode chuck and the lower electrode chuck are respectively and electrically connected with the micro-resistance welding host through output cables. In the micro-resistance welding butt welding machine, the two electrode mounting holes are internally provided with adaptive tool fixtures, the tool fixtures are provided with clamping grooves for clamping the butt-welded micro-fine workpieces, and the butt-welded workpieces are accurately clamped through the clamping grooves of the tool fixtures.
Description
Technical Field
The invention belongs to the field of resistance welding, and particularly relates to a micro-resistance butt welding machine suitable for butt welding of miniature workpieces.
Background
In the field of resistance welding, a resistance welding butt welder is used for lengthening wires and profiles or splicing workpiece openings of two workpieces in different shapes, and comprises a resistance welding power supply and a butt welding clamping and feeding mechanism.
In the related art, a resistance welding butt welding machine usually adopts a horizontal structure, can only butt weld workpieces with the diameter of more than 2.0mm generally, and at present, resistance welding butt welding equipment suitable for butt welding of micro workpieces is not available. In the hardware industry and the electronic industry, a large number of micro-workpieces need to be subjected to butt welding, such as a large number of wires with the diameter of phi 1.0mm, pipe lengthening and the like.
In view of the above, it is necessary to provide a micro resistance butt welding machine suitable for butt welding of micro workpieces.
Disclosure of Invention
The invention aims to: overcomes the defects of the prior art and provides a micro-resistance butt welding machine which is suitable for butt welding of micro-workpieces.
In order to achieve the purpose, the invention provides a micro-resistance welding butt welder, which comprises a micro-resistance welding host and a butt welder head which are electrically connected, wherein the butt welder head comprises a bottom plate, an electrode chuck base connected with the bottom plate and a head frame arranged on the bottom plate through an upright post, the head frame is provided with a front sliding shaft and a middle shaft, the front sliding shaft is provided with an upper electrode chuck and a lower electrode chuck which are provided with electrode mounting holes side by side, the upper electrode chuck is arranged above the lower section of the front sliding shaft in a fastening mode, the lower electrode chuck is arranged below the lower section of the front sliding shaft in a sliding mode through a linear sliding bearing and is fastened on the electrode chuck base, and the upper electrode chuck and the lower electrode chuck are respectively and electrically connected with the micro-resistance welding host through output cables.
As an improvement of the micro-resistance welding butt welding machine, the electrode mounting holes of the upper electrode chuck and the lower electrode chuck are respectively provided with adaptive tool fixtures, each tool fixture is provided with a clamping groove for clamping a butt-welded micro workpiece, and the upper electrode chuck and the lower electrode chuck accurately clamp the butt-welded micro workpiece through the clamping grooves of the tool fixtures.
As an improvement of the micro-resistance welding butt welder, the middle shaft is provided with a middle shaft extension shaft, and the upper electrode chuck is fixedly arranged above the lower section of the front sliding shaft and is arranged on the middle shaft extension shaft in a sliding manner through a linear sliding bearing.
As an improvement of the micro-resistance welding butt welding machine, the machine head frame is provided with two rear sliding shafts which are arranged through linear sliding bearings, the machine head frame is arranged between the upper end face and the lower end face of the upright post through the two rear sliding shafts, and the machine head frame as a moving member moves up and down along the two rear sliding shafts relative to the upright post.
As an improvement of the micro-resistance welding butt welding machine, the lower section of one of the two rear sliding shafts is provided with a return compression spring, and the lower section of the other rear sliding shaft is provided with a stroke limiting metal ring with a fastening screw.
The invention has the technical effects that: the clamping and feeding mechanisms of the electric resistance welding butt welding machine of the prior art for workpieces are all in a horizontal structure, the butt welding machine head of the micro-electric resistance welding butt welding machine comprises a bottom plate and an electrode chuck base connected with the bottom plate, the machine head frame is arranged on the bottom plate through an upright post, the machine head frame is provided with a front sliding shaft and a middle shaft, the front sliding shaft is provided with an upper electrode chuck and a lower electrode chuck which are provided with electrode mounting holes side by side, the upper electrode chuck is arranged above the lower section of the front sliding shaft in a fastening mode, the lower electrode chuck is arranged below the lower section of the front sliding shaft in a sliding mode through a linear sliding bearing and is fastened on an electrode chuck base, the upper electrode chuck and the lower electrode chuck are respectively and electrically connected with a micro-resistance welding host machine through output cables, the tool clamp is provided with a clamping groove of a micro-workpiece, and the upper electrode chuck and the lower electrode chuck accurately clamp the micro-workpiece which is butt-welded through the clamping groove of the tool clamp. So set up, on the one hand can be through the accurate clamp of the centre gripping groove of two upper and lower electrode chuck frock clamps by the butt welding work piece, on the other hand the electrode chuck advances by the butt welding work piece to follow the structure through the electrode power and provide very gentle butt welding power, satisfy fine work piece through the butt welding machine head of vertical structure and press from both sides the requirement of tight feed mechanism.
In addition, the invention uses the frame of the head as the movable component of the butt welding head through the upright post, and proposes that two rear sliding shafts are arranged on the frame of the head by a linear sliding bearing, the two rear sliding shafts are arranged between the upper end surface and the lower end surface of the upright post, the frame of the head is changed into a movable component, and the middle shaft is fixed and does not participate in the movement any more. So set up, increased the stability of butt welder head installation, the spacing metal ring structure of stand back sliding shaft setting increases or changes the activity stroke of aircraft nose frame easily, and the axis is fixed can guarantee to provide the uniformity of electrode power.
Drawings
The invention is described in detail below with reference to the accompanying drawings and the following detailed description, in which:
FIG. 1 is a schematic structural diagram of a micro-resistance butt welding machine of the present invention.
Detailed Description
In order to make the objects, technical solutions and technical effects of the present invention more clear, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
For convenience of describing the present invention, first, technical parameters of the micro-resistance welding host, the butt welding head, the head frame, the front sliding shaft, the middle shaft, the rear sliding shaft, the upright post and other structures related to the embodiments of the present invention are explained as follows.
In the embodiment of the invention, the micro-resistance welding host comprises a power transformer, a pulse output transformer, a main circuit board and the like which are arranged in a host box, wherein the main circuit board regulates and controls pulse output voltage and pulse output time, the maximum pulse output current is 1000A, the pulse output voltage is 0-1.99V, the pulse output time is less than 39.9ms, and the size of the host box is 40 × 25cm (length, width and height). The frame of the machine head is a metal frame which is formed by casting or processing, the size of the outer frame of the frame is about 20 x 12 x 8cm (length, width and height), and the thickness of the peripheral frame is about 2 cm. The front sliding shaft and the rear sliding shaft are both round steel rods with the diameter of 13mm so as to be matched with the linear sliding bearing, the length of the front sliding shaft is about 20cm, and the length of the rear sliding shaft is about 35 cm. The central axis is a hollow aluminum tube with the diameter of 23mm and the length is about 20 cm. The extension axis is a cylinder with 13mm diameter and about 5cm in length. The compression spring arranged on the middle shaft can provide a preset fixed force less than 5kg, the groove width of the upright post is about 8.5cm, the depth of the upright post is about 6cm, the groove wall thickness of the upright post is about 15mm, and the length of the upright post is about 35 cm. The electrode holder consists of two metal clamping blocks that hold the electrodes, each electrode holder being about 100 x 40 x 15mm (length x width x height).
The overall structure of the micro-resistance butt welding machine of the present invention will be described in detail with reference to fig. 1.
Referring to fig. 1, the micro resistance welding butt welder of the present invention includes a micro resistance welding main machine 200 and a butt welder head, the butt welder head includes a bottom plate 116, an electrode clamp base 110 connected with the bottom plate 116, and a head frame 101 mounted on the bottom plate 116 through a column 103, the head frame 101 is provided with a front slide shaft 105 and a middle shaft 106, the front slide shaft 105 is mounted with an upper electrode clamp 102A and a lower electrode clamp 102B in parallel, the upper electrode clamp 102A is mounted on the upper side of the lower section of the front slide shaft 105 in a fastening manner, the lower electrode clamp 102B is mounted on the lower side of the lower section of the front slide shaft 105 in a sliding manner through a linear slide bearing and fastened on the electrode clamp base 110, and the upper and lower electrode clamps 102A, 102B are electrically connected with the micro resistance welding main machine 200 through output cables, respectively.
In the illustrated embodiment, the handpiece frame 101 is mounted to the base plate 116 via the upright 103, the handpiece frame 101 is mounted with the front slide shaft 105 and the middle shaft 106, and the upper electrode cartridge 102A and the lower electrode cartridge 102B are mounted side by side on the front slide shaft 105. The upper and lower electrode chucks 102A, 102B are substantially the same as the conventional electrode chucks and are provided with electrode mounting holes of about Φ 3.0mm, and the electrode mounting holes of the upper and lower electrode chucks 102A, 102B are provided with adaptive tool fixtures 115A, 115B.
Referring to fig. 1, in the illustrated embodiment, two electrode mounting holes are respectively provided with tooling clamps 115A and 115B adapted to be phi 3.0mm, and the tooling clamps 115A and 115B are made of metal with good conductivity, and the length of the tooling clamps is slightly longer than the thickness of the electrode chuck. Clamping grooves for respectively clamping two ends of a butt-welded workpiece are longitudinally machined at the same positions of the two tool clamps 115A and 115B, for example, at the central positions of the two metal rods. Thus, the upper and lower electrode chucks 102A, 102B can realize accurate clamping of the butt-welded workpiece through the clamping grooves of the tool fixtures 115A, 115B.
The following describes a method for setting the holding grooves of the fine workpiece by the two tool holders 115A and 115B, taking the stainless steel bar with a diameter of 0.5mm as an example: adopting a red copper metal bar with the length equal to the thickness of two electrode chucks and the diameter of phi 3.0mm, and longitudinally processing a small round hole with the diameter of phi 0.5mm at the central position of the metal bar, wherein the processing method comprises the steps of cutting the diameter of the metal bar by wire cut electrical discharge machining, cutting the small round hole with the diameter of phi 0.5mm at the position of the center of the circle, processing the metal bar into a completely opened end at one end of the diameter, and remaining an uncut part with the diameter of about 0.3mm at the other end; the metal bar is cut into two pieces according to the length that the thickness of the electrode chuck is slightly longer, namely two tool clamps 115A and 115B with clamping grooves are processed. During butt welding, stainless steel rods with the diameter of 0.5mm are respectively arranged on the small round holes of the clamping grooves of the two tool clamps 115A and 115B, and butt-welded workpieces can be respectively clamped through the electrode chucks. It can be understood that the butt-welded workpieces with different shapes and sizes are provided with the tool fixtures with different clamping grooves.
Referring to fig. 1, a preset electrode force display circuit is disposed on the front outer groove of the handpiece frame 101, an upper compression spring 108A for pre-pressing the electrode force and a lower compression spring 108B for increasing the electrode force compliance are mounted on the central shaft 106, a sliding shaft clamp 109 is mounted between the upper compression spring 108A and the lower compression spring 108B, and the sliding shaft clamp 109 is clamped on the front sliding shaft 105. So configured, the pre-set electrode force of the upper compression spring 108A can be applied to the front slide shaft 105 via the slide shaft clamp 109.
It should be noted that the structure of the front slide shaft 105, the slide shaft holder 109, and the upper and lower compression springs 108A and 108B mounted on the center shaft 106 may be referred to as an "electrode force following structure" which can ensure that the electrode force is provided very gently. The electrode force provided by the structure is detected to be 0.1N at the minimum, and the preset electrode force can be increased or decreased with the accuracy of 0.1N.
With continued reference to fig. 1, in the illustrated embodiment, the upper electrode cartridge 102A is mounted in a secured manner above the lower section of the front slide shaft 105, and the lower electrode cartridge 102B is mounted in a sliding manner below the lower section of the front slide shaft 105 via a linear slide bearing and secured to the electrode cartridge base 110 that is coupled to the bottom plate 116.
In another embodiment of the present invention, the upper electrode cartridge 102A is fixedly mounted above the lower section of the front slide shaft 105, slidably mounted on the middle shaft extension shaft via a linear slide bearing, and the lower electrode cartridge 102B is slidably mounted below the lower section of the front slide shaft 105 via a linear slide bearing and fixedly mounted on the electrode cartridge base 110 connected to the bottom plate 116. In other words, the upper electrode chuck 102A is tightly mounted above the lower section of the front slide shaft 105, and is slidably mounted on the middle shaft extension shaft via the linear slide bearing, which also falls within the scope of the present invention.
In the butt welding operation of the micro resistance welding, first, an electrode force (upset force) is preset to compress the spring 108A on the center shaft 106. During welding, as long as a welding acting force is applied to the upper electrode holder 102A, since the upper electrode holder 102A is fastened above the front sliding shaft 105, the lower electrode holder 102B is slidably mounted below the front sliding shaft 105 by a linear sliding bearing, and the lower electrode holder 102B is fastened on the electrode holder base 110, the upper electrode holder 102A approaches and contacts the lower electrode holder 102B, that is, the butt-welded workpiece clamped by the tooling fixture is touched and pressed. When the top pressure reaches the preset top forging force, the preset electrode force display circuit is connected with a welding power supply of the micro-resistance welding host 200, so that welding is realized. With the arrangement, on one hand, the butt-welded workpiece is accurately clamped by the clamping grooves of the tool clamps 115A and 115B of the upper electrode chuck 102A and the lower electrode chuck 102B, on the other hand, the butt-welded workpiece is fed by the very soft butt welding force provided for the upper electrode chuck 102A through the electrode force following structure, so that the butt welding head with a vertical structure is realized, and the requirement of a micro-resistance welding butt welder on a micro-workpiece clamping and feeding mechanism is met.
Referring now to fig. 1, it will be further described how the head frame 101 can be used as a movable member of the butt welding head via the upright 103.
In the prior art, a handpiece frame is fixed through an upright post, the handpiece frame is a fixed support and is used for installing moving components including a front sliding shaft, a middle shaft and the like, and the middle shaft is a moving component and is also provided with a pre-pressurizing preset electrode force structure and an electrode force following structure, so that the provided electrode force is easy to be unstable. In addition, the moving stroke of the front sliding shaft and the middle shaft is limited by the frame of the machine head, generally the moving stroke does not exceed 20 mm, and because the upper electrode chuck and the lower electrode chuck are arranged at the lower section of the front sliding shaft, the moving stroke of the front sliding shaft is too short to meet the requirements of some workpieces with long required strokes.
The invention proposes to use a head frame 101 as a movable component of a butt welding head through a vertical column 103, as shown in figure 1, the butt welding head comprises a groove-shaped vertical column 103 provided with an upper end surface 111A and a lower end surface 111B, the head frame 101 is provided with two rear sliding shafts 107A and 107B which are installed through linear sliding bearings, the head frame 101 is installed between the upper end surface 111A and the lower end surface 111B of the groove-shaped vertical column 103 through the two rear sliding shafts 107A and 107B, and the head frame 101 can move up and down relative to the vertical column 103 along the two rear sliding shafts 107A and 107B. At this time, the head frame 101 is provided as a moving member to the bonding head. In addition, in the present embodiment, the middle shaft 106 is fixed to the handpiece frame 101 by a fastening screw, and the middle shaft 106 is no longer a moving member. The front slide shaft 105 of the slide shaft clamp 109 can still displace a small amount of range between the upper and lower compression springs 108A, 108B.
Thus arranged, the head frame 101 is movable up and down relative to the column 103 along the two rear slide shafts 107A, 107B. When butt welding is performed, the head frame 101, as a movable member of the welding head, can drive the upper electrode holder 102A to perform resistance spot welding operation in which the upper electrode holder reciprocates within the range of the column 103 by applying a welding force and a restoring force. In addition, the central shaft 106 is fixed to ensure consistency of welding force.
Referring to fig. 1, a pedal cable 112 for providing a butt welding force to the head frame 101 through a pedal is installed between the two rear sliding shafts 107A,107B, a lower end of the head frame 101 is connected to the cable 112, a return compression spring 113 is installed on one rear sliding shaft 107B near the outer side of the two rear sliding shafts 107A,107B, a stroke limiting metal ring 114 with an adjustable screw is installed on one rear sliding shaft 107A near the inner side, and the movable stroke of the head frame 101 on the upright post 103 can be increased or decreased by adjusting the installation position of the limiting metal ring 114 on the rear sliding shaft 107A through the adjustable screw.
The machine head frame 101 is changed into a movable component of the welding machine head, the middle shaft 106 is fixed and does not participate in movement, and the rear sliding shaft 107A of the upright post 103 is provided with a limiting metal ring 114, so that the movable stroke of the machine head frame 101 can be easily increased or changed. The center shaft 106 is fixed to ensure a predetermined weld force consistency on the upper and lower electrode clamps 102A, 102B. So set up, aircraft nose frame 101 becomes the movable member to the welding head, can increase the activity stroke to the welding head and improve the stability to the welding head, guarantees the uniformity of the butt welding power that provides, and electrode holder 102A, 102B's activity stroke about adjusting through aircraft nose frame 101 is easy. Tests show that the moving stroke of the electrode chuck driven by the handpiece frame 101 in the embodiment can be increased to more than 50 mm.
As can be seen from the above detailed description of the embodiment of the present invention, the clamping and feeding mechanism of the electric resistance welding butt welder of the prior art for the workpiece is a horizontal structure, and the butt welder head of the electric resistance welding butt welder of the present invention includes a bottom plate 116, an electrode clamp base 110 connected with the bottom plate 116, a head frame 101 mounted on the bottom plate 116 through a column 103, and a front sliding shaft 105 and a middle shaft 106 mounted on the head frame 101, wherein the front sliding shaft 105 is mounted with an upper electrode clamp 102A and a lower electrode clamp 102B side by side, the upper and lower electrode clamps 102A, 102B are respectively electrically connected with the electric resistance welding mainframe 200 through output cables, the upper electrode clamp 102A is mounted above the lower section of the front sliding shaft 105 in a fastening manner, the lower electrode clamp 102B is mounted below the lower section of the front sliding shaft 105 in a sliding manner through a linear sliding bearing and fastened on the electrode clamp base 110, the tool holders 115A and 115B are provided with holding grooves for fine workpieces, and the upper and lower electrode chucks 102A and 102B accurately clamp the fine workpieces to be butt-welded via the holding grooves of the tool holders 115A and 115B. With this arrangement, on the one hand, the workpiece to be butt-welded is accurately clamped by the clamping grooves of the tool holders 115A, 115B of the upper and lower electrode chucks 102A, 102B, and on the other hand, the upper electrode chuck 102A feeds the workpiece to be butt-welded, and provides a very gentle butt welding force by the electrode force following structure, and the requirement of the fine workpiece clamping and feeding mechanism is satisfied by the butt welding machine head of the vertical structure.
In addition, the invention also provides a method for installing two rear sliding shafts 107A and 107B on the head frame 101 of the butt welding head by using linear sliding bearings, and installing the two rear sliding shafts 107A and 107B between the upper end surface 111A and the lower end surface 111B of the upright post 103, so that the head frame 101 is changed into a moving component, and the middle shaft 106 is fixed and does not participate in the movement any more. By the arrangement, the stability of installing the welding head is improved, the movable stroke of the head frame 101 is easily increased or changed due to the structure that the rear sliding shaft 107A of the upright post 103 is provided with the limiting metal ring 114, and the middle shaft 106 is fixed to ensure the consistency of electrode force.
Appropriate changes and modifications to the embodiments described above will become apparent to those skilled in the art from the disclosure and teachings of the foregoing description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (3)
1. A micro-resistance welding butt welding machine comprises a micro-resistance welding main machine and a butt welding machine head which are electrically connected, and is characterized in that the butt welding machine head comprises a bottom plate, an electrode chuck base connected with the bottom plate, and a machine head frame arranged on the bottom plate through an upright post, the machine head frame is provided with a front sliding shaft and a middle shaft, the front sliding shaft is provided with an upper electrode chuck and a lower electrode chuck which are provided with electrode mounting holes side by side, the upper electrode chuck is arranged above the lower section of the front sliding shaft in a fastening mode, the lower electrode chuck is arranged below the lower section of the front sliding shaft in a sliding mode through a linear sliding bearing and is fastened on the electrode chuck base, the electrode mounting holes of the upper electrode chuck and the lower electrode chuck are respectively provided with adaptive tool clamps, each tool clamp is provided with a clamping groove for clamping a micro workpiece to be butt welded, the upper electrode chuck and the lower electrode chuck clamp accurately clamp the micro workpiece to be butt welded through the clamping groove of each tool clamp, the upper electrode chuck and the lower electrode chuck are respectively and electrically connected with a micro-resistance welding host machine through output cables, the machine head frame is provided with two rear sliding shafts which are installed through linear sliding bearings, the machine head frame is installed between the upper end face and the lower end face of the upright post through the two rear sliding shafts, and the machine head frame as a moving member moves up and down along the two rear sliding shafts relative to the upright post.
2. A micro-resistance butt welding machine according to claim 1, wherein the middle shaft is provided with a middle shaft extension shaft, and the upper electrode clamp is fixedly mounted above the lower section of the front slide shaft and slidably mounted on the middle shaft extension shaft through a linear slide bearing.
3. A micro-resistance welding butt welder according to claim 1, wherein the lower section of one of the two rear sliding shafts is provided with a return compression spring, and the lower section of the other rear sliding shaft is provided with a stroke limiting metal ring with a fastening screw.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910822904.5A CN110576248B (en) | 2019-09-02 | 2019-09-02 | Micro-resistance welding butt welder |
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| CN201910822904.5A CN110576248B (en) | 2019-09-02 | 2019-09-02 | Micro-resistance welding butt welder |
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| CN110576248A CN110576248A (en) | 2019-12-17 |
| CN110576248B true CN110576248B (en) | 2021-11-26 |
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| CN106624310A (en) * | 2016-12-12 | 2017-05-10 | 广州微点焊设备有限公司 | Underwater welding device and method for resistance welding |
| CN206435857U (en) * | 2017-01-12 | 2017-08-25 | 广州市德力焊接设备有限公司 | Dipulse capacitance energy storage direct current precision welding machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1569379A (en) * | 2004-05-14 | 2005-01-26 | 杨仕桐 | Precise welding machine with long suspension arm |
| CN201603940U (en) * | 2010-02-05 | 2010-10-13 | 郑州华电金源管道有限公司 | Novel submerged arc automatic welder |
| CN103920981A (en) * | 2013-12-03 | 2014-07-16 | 广州微点焊设备有限公司 | Electric resistance welding micro-welding spot welding machine |
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| CN206435857U (en) * | 2017-01-12 | 2017-08-25 | 广州市德力焊接设备有限公司 | Dipulse capacitance energy storage direct current precision welding machine |
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| CN110576248A (en) | 2019-12-17 |
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