CN107962286B - Intermittent spot welder - Google Patents
Intermittent spot welder Download PDFInfo
- Publication number
- CN107962286B CN107962286B CN201711496172.2A CN201711496172A CN107962286B CN 107962286 B CN107962286 B CN 107962286B CN 201711496172 A CN201711496172 A CN 201711496172A CN 107962286 B CN107962286 B CN 107962286B
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- rod
- blocking strip
- welding
- transmission rod
- connecting component
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- 238000003466 welding Methods 0.000 claims abstract description 95
- 230000000903 blocking effect Effects 0.000 claims abstract description 53
- 230000005540 biological transmission Effects 0.000 claims abstract description 44
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 abstract description 18
- 229910052751 metal Inorganic materials 0.000 abstract description 18
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000004134 energy conservation Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 230000009471 action Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
Abstract
The invention provides an intermittent spot welder which comprises a frame and a spot welding mechanism movably arranged on the frame, wherein the frame comprises a fixed rod which is vertically arranged, a first connecting component which is sleeved outside the fixed rod, a transmission rod and a limit rod which are horizontally arranged on the first connecting component, the spot welding mechanism comprises a second connecting component which is movably arranged on the limit rod and the transmission rod, a blocking strip and a welding gun which are arranged at the bottom of the second connecting component, and a control circuit which is formed by sequentially connecting a movable switch, an electromagnet and a direct current power supply in series; the welding machine can weld each metal wire on the metal filter screen in a targeted manner, the condition that the welding head is in direct contact with the supporting plate at a gap is avoided, the welding head is prevented from being damaged due to direct contact between two poles of the spot welder, and the welding machine has the advantages of energy conservation, environmental protection, convenience in use and high working efficiency, and the production cost is reduced.
Description
Technical Field
The invention relates to the field of electric welding equipment, in particular to a spot welder for welding edges of net-shaped articles.
Background
The spot welder adopts the principle of double-sided double-point overcurrent welding, when in work, two electrodes press the workpiece to enable two layers of metal to form certain contact resistance under the pressure of the two electrodes, and when welding current flows from one electrode to the other electrode, instant heat welding is formed at the two contact resistance points, and the welding current instantly flows from the other electrode to the electrode along the two workpieces to form a loop, and the internal structure of the welded workpiece is not damaged. The spot welding process comprises the steps of opening cooling water; cleaning the surface of a weldment, accurately assembling, then sending the weldment between an upper electrode and a lower electrode, and applying pressure to ensure that the weldment is in good contact; electrifying to make the contact surfaces of the two workpieces heated and partially melted to form a nugget; maintaining pressure after power failure to cool and solidify the nugget under the pressure to form a welding spot; and removing the pressure and taking out the workpiece.
The metal filter screen also needs to be subjected to electric welding operation in the production process, mainly after the production is finished, edges of the filter screen need to be sealed, and the edge part of the filter screen is welded on a metal strip for sealing the edges by a spot welder. However, the conventional spot welder is inconvenient in welding the net, and because the conventional spot welder continuously works and the wire ends at the edges of the filter screen are intermittently distributed with the metal strips, the welding heads of the spot welder can directly contact with the supporting plate in the moving process, so that two poles in the spot welder are directly connected, the welding heads are damaged, and meanwhile, the power consumption is increased due to the continuous work of the spot welder, which is unfavorable for saving the production cost.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides the intermittent spot welder, which is used for solving the problems that when the existing spot welder performs edge sealing operation on a metal filter screen, the welding head is in continuous welding, and when intermittent contact points at the edge of the filter screen are welded, the welding head and a supporting plate are in contact, so that two poles of the spot welder are directly connected, the welding head is easy to damage, the continuous welding also brings about waste of electric energy, and the cost is increased.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the intermittent spot welder comprises a frame and a spot welding mechanism movably arranged on the frame, wherein the frame comprises a fixing rod which is vertically arranged, a first connecting component which is sleeved outside the fixing rod, and a transmission rod and a limit rod which are horizontally arranged on the first connecting component, the limit rod is a smooth round rod which is arranged above the transmission rod in parallel, the limit rod is fixedly arranged on the first connecting component, the transmission rod is a threaded rod which is rotatably arranged on the first connecting component, and one end of the transmission rod penetrates through the first connecting component and is connected with a driving motor;
the spot welding mechanism comprises a second connecting component movably arranged on the limiting rod and the transmission rod, a blocking strip and a welding gun, wherein the blocking strip and the welding gun are arranged at the bottom of the second connecting component, the second connecting component is sleeved on the limiting rod to be fixed, and a thread sleeve is arranged outside the transmission rod to carry out screw rod transmission, so that the second connecting component and the welding gun horizontally move along the direction of the transmission rod; the blocking strip and the welding gun are arranged in parallel along the vertical direction, the blocking strip and the welding gun are both coplanar with the transmission rod, the top of the blocking strip is fixed with the second connecting assembly through a torsion spring, the end head of the top of the blocking strip is provided with a movable switch, the welding gun comprises a telescopic rod, a welding head arranged at the bottom of the telescopic rod and a supporting plate arranged at the bottom of the welding head, a fixed sleeve is sleeved outside the telescopic rod, the top of the telescopic rod is connected with the fixed sleeve through a vertically arranged telescopic spring, an electromagnet is arranged at the top of the inside of the fixed sleeve, and an iron block is arranged at the top of the welding head corresponding to the electromagnet;
the control circuit is formed by sequentially connecting the movable switch, the electromagnet and the direct current power supply in series, the control circuit is closed when the blocking strip is in a vertical state, and the movable switch rotates along with the blocking strip when the blocking strip is inclined, so that the control circuit is disconnected.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the second connecting component is connected with the transmission rod through the screw rod, when the transmission rod rotates, the second connecting component can move along the transmission rod, and during operation, the welding gun and the blocking strip move horizontally on the frame along with the second connecting component, at the moment, the blocking strip moves on the surface of the filter screen, the bottom end of the blocking strip passes through meshes in the filter screen, when the blocking strip touches the metal wire, the blocking strip rotates backwards and inclines, so that the movable switch rotates and turns off the control circuit, the electromagnet stops working, the welding head loses upward acting force and pops downwards under the action of the telescopic spring, the metal wire touched by the blocking strip is welded, when the blocking strip leaves the metal wire and is restored under the action of the torsion spring, the electromagnet restores electric power, the welding head is attracted upwards to the original place, and the welding operation is finished, therefore, each metal wire on the metal filter screen can be welded in a targeted way, the welding head and the supporting plate can not be directly contacted at the gap, and the damage caused by direct contact between the two-pole spot welder is avoided;
2. in the invention, the welding head only welds at the part with the metal wire, and the rest time is left from the welding position to interrupt the spot welding operation, so that the actual working time is very short, a large amount of electric energy can be saved, the energy-saving and environment-friendly effects are achieved, and the production cost is reduced;
3. the invention is an automatic welding operation, wherein the welding head moves along the welding direction under the drive of the second connecting component, thereby completing all welding work on a straight line, and the next welding can be performed by adjusting the position of the filter screen, so that the welding head can complete the work by only a small number of operators, and has the advantages of convenient use and high working efficiency.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic view of the spot welding mechanism of the present invention;
FIG. 4 is a schematic circuit diagram of the spot welding mechanism of the present invention;
in the figure: the welding gun comprises a fixed rod 1, a first connecting assembly 2, a limiting rod 3, a transmission rod 4, a second connecting assembly 5, a blocking strip 6, a welding gun 7, a screw 21, a motor 41, a bearing 42, a limiting sleeve 51, a sliding sleeve 52, a connecting seat 53, an arc-shaped section 61, a torsion spring 62, a movable switch 63, a welding head 71, a fixed sleeve 72, a telescopic spring 73, a supporting plate 74, an electromagnet 75 and a connecting sheet 741.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings and examples.
Example 1:
as shown in fig. 1-4, the invention provides an intermittent spot welder, which comprises a frame and a spot welding mechanism movably arranged on the frame, wherein the frame comprises a fixed rod 1 vertically arranged, a first connecting component 2 sleeved outside the fixed rod 1, and a transmission rod 4 and a limit rod 3 horizontally arranged on the first connecting component 2; in this embodiment, the fixing rods 1 are two parallel circular rods, the first connecting component 2 is a square connector, the middle part of the first connecting component is sleeved outside the two fixing rods 1 in a penetrating way, one side is fixed by a screw 21 penetrating through the fixing rods 1, so that the upper and lower positions of the first connecting component 2 are controllably adjusted, and the side part opposite to the screw 21 extends to the fixing rods 1 and is externally used for connecting the limiting rod 3 and the transmission rod 4. The limiting rod 3 is a smooth round rod which is arranged above the transmission rod 4 in parallel, and the limiting rod 3 is fixedly arranged on the first connecting component 2; the transmission rod 4 is a threaded rod rotatably arranged on the first connecting component 2, the other end of the transmission rod 4 penetrates through the first connecting component 2 and is connected with a driving motor 41 to drive the transmission rod 4 to rotate, and the transmission rod 4 is fixed on the first connecting component 2 through a bearing 42.
The spot welding mechanism comprises a second connecting component 5 movably arranged on the limiting rod 3 and the transmission rod 4, a blocking strip 6 and a welding gun 7 which are arranged at the bottom of the second connecting component 5, wherein the second connecting component 5 is sleeved on the limiting rod 3 for fixation, and a thread sleeve is arranged outside the transmission rod 4 for screw rod transmission, so that the second connecting component 5 horizontally moves along the direction of the transmission rod 4; in the preferred scheme of this embodiment, the second connecting component 5 includes the stop collar 51 that the cover is established on the gag lever post 3 and the slip cap 52 that the cover is established on the transfer line 4, wherein the inside ball bearing 42 that is equipped with transfer line 4 surface screw thread matched with of slip cap 52, when transfer line 4 rotates, slip cap 52 passes through the lead screw transmission and reciprocates on transfer line 4, and drive stop collar 51 and slide back and forth on gag lever post 3, wherein fixed connection carries out fixing in the vertical direction between stop collar 51 and the slip cap 52, avoid slip cap 52 to take place the rotation in the direction of perpendicular to its removal along with transfer line 4's rotation.
The sliding sleeve 52 bottom is equipped with the connecting seat 53 that is the shape of falling "T", including horizontal segment and the vertical section of perpendicular setting at the horizontal segment middle part, horizontal segment and 4 parallel arrangement of transfer line, rotatable coupling between the top of the vertical section of connecting seat 53 and the sliding sleeve 52 is convenient for when the second coupling assembling 5 removes and welds along different directions, adjusts the front and back position of blocking strip 6 and welder 7.
The two ends of the horizontal section of the connecting seat 53 are respectively connected with the blocking strip 6 and the welding gun 7, the blocking strip 6 and the welding gun 7 are arranged in parallel in the vertical direction, and the blocking strip 6 and the welding gun 7 are coplanar with the transmission rod 4, so that the blocking strip 6 is always positioned right in front of the welding gun 7 when the second connecting assembly 5 moves; the top of the blocking strip 6 is fixed with the connecting seat 53 through the torsion spring 62, when the torsion spring 62 is in a relaxed state, the blocking strip 6 is in a vertical state, in the preferred scheme of the embodiment, the bottom of the blocking strip 6 is provided with an arc section 61, the top end of the arc section 61 is provided with a pointed end, the bending direction of the arc section 61 is away from one side of the welding gun 7, the pointed end of the arc section 61 can extend into meshes of a metal net to perform blocking operation, meshes of various sizes can be matched for use, and the arc section 61 away from the welding gun 7 can enable blocking time to be longer, so that spot welding effect is ensured; the welding gun 7 comprises a telescopic rod, a welding head 71 arranged at the bottom of the telescopic rod and a supporting plate 74 arranged at the bottom of the welding head 71, wherein a vertical fixing sleeve 72 is sleeved outside the telescopic rod, the telescopic rod can move in the vertical direction inside the fixing sleeve 72, the top end of the telescopic rod is connected with the fixing sleeve 72 through a vertically arranged telescopic spring 73, an electromagnet 75 is further arranged at the top end inside the fixing sleeve 72, an iron block is correspondingly arranged at the top of the welding head 71, when the electromagnet 75 works, the welding head 71 is tightly adsorbed at the top of the fixing sleeve 72 through the iron block, the telescopic spring 73 compresses the telescopic spring 73, when the electromagnet 75 is disconnected, the welding head 71 can pop up the fixing sleeve 72, and the end part of the welding head 71 is just contacted with a welded metal wire. In the preferred embodiment, the supporting plate 74 is fixed on the connecting seat 53 by an inverted L-shaped tab 741, the height of the tab 741 is matched with the length of the welding head 71, the welding head 71 and the supporting plate 74 just sandwich the welded metal wire during welding, the tab 741 is parallel to the transmission rod 4 and arranged on the side of the blocking strip 6 and the welding head 71, and the metal net is arranged on the side away from the tab 741 during operation, so that the tab 741 cannot block the movement of the welding gun 7 along the metal net.
In this embodiment, the inside of the horizontal section of the connection seat 53 is hollow and is provided with a dc power supply, wherein one end of the connection blocking strip 6 is further provided with a cavity, and a movable switch 63 connected with the top end of the blocking strip 6 is disposed in the cavity, so that the movable switch 63 can be driven to rotate in the cavity when the blocking strip 6 rotates, wires are disposed in the horizontal section of the connection seat 53 to respectively connect the movable switch 63, the electromagnet 75 and the dc power supply in series to form a control circuit, when the blocking strip 6 is in a vertical state, the control circuit is closed, and when the blocking strip 6 inclines, the movable switch 63 rotates along with the control circuit to disconnect the control circuit. That is, when the blocking strip 6 touches the wire, the blocking strip rotates backward and inclines, so that the movable switch 63 rotates and turns off the control circuit, the electromagnet 75 stops working, so that the welding head 71 loses upward acting force and pops up downwards under the action of the telescopic spring 73, the wire touched by the blocking strip 6 is welded, when the blocking strip 6 leaves the wire and is restored under the action of the torsion spring 62, the electromagnet 75 restores power, the welding head 71 is attracted upwards to be in place, and the welding operation is finished, so that the intermittent spot welding operation can be completed.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (6)
1. An intermittent spot welder, characterized in that: the spot welding device comprises a frame and a spot welding mechanism movably arranged on the frame, wherein the frame comprises a fixing rod which is vertically arranged, a first connecting component which is sleeved on the fixing rod, and a transmission rod and a limit rod which are horizontally arranged on the first connecting component, the limit rod is a smooth round rod which is arranged above the transmission rod in parallel, the limit rod is fixed on the first connecting component, the transmission rod is a threaded rod which is rotatably arranged on the first connecting component, and one end of the transmission rod penetrates through the first connecting component and is connected with a driving motor;
the spot welding mechanism comprises a second connecting assembly movably arranged on the limiting rod and the transmission rod, a blocking strip and a welding gun, wherein the blocking strip and the welding gun are arranged at the bottom of the second connecting assembly, the second connecting assembly comprises a limiting sleeve sleeved on the limiting rod and a sliding sleeve sleeved on the transmission rod, a ball nut matched with threads on the surface of the transmission rod is arranged in the sliding sleeve, and when the transmission rod rotates, the sliding sleeve moves back and forth on the transmission rod through screw rod transmission and drives the limiting sleeve to move, and the limiting sleeve is fixedly connected with the sliding sleeve;
the blocking strip and the welding gun are arranged in parallel along the vertical direction, the plane where the blocking strip and the welding gun are positioned is parallel to the transmission rod, the top of the blocking strip is fixed with the second connecting assembly through a torsion spring, the end head of the top of the blocking strip is also provided with a movable switch, the welding gun comprises a telescopic rod, a welding head arranged at the bottom of the telescopic rod and a supporting plate arranged at the bottom of the welding head, a fixed sleeve is sleeved outside the telescopic rod, the top end of the telescopic rod is connected with the fixed sleeve through a vertically arranged telescopic spring, an electromagnet is arranged at the top end inside the fixed sleeve, and an iron block is arranged at the top of the welding head corresponding to the electromagnet;
the control circuit is formed by sequentially connecting a movable switch, an electromagnet and a direct current power supply in series, the control circuit is closed when the blocking strip is in a vertical state, and the movable switch rotates along with the blocking strip when the blocking strip is inclined so that the control circuit is opened;
the bottom of the blocking strip is provided with an arc section, the top end of the arc section is provided with a pointed end, and the bending direction of the arc section is away from one side of the welding gun; the supporting plate is fixed on the connecting seat through an inverted L-shaped connecting sheet, and the connecting sheet is parallel to the transmission rod and arranged on the side surfaces of the blocking strip and the welding head.
2. The intermittent spot welder as in claim 1, wherein: the first connecting component is a square connector, the middle part of the first connecting component is sleeved on the fixed rod in a penetrating way, the side face of the first connecting component is fixed through a screw penetrating through the fixed rod, and the side face part opposite to the screw extends to the fixed rod and is externally used for connecting the limiting rod and the transmission rod.
3. The intermittent spot welder as in claim 2, wherein: the transmission rod is fixed on the first connecting component through a bearing.
4. The intermittent spot welder as in claim 1, wherein: the sliding sleeve is characterized in that an inverted T-shaped connecting seat is further arranged at the bottom of the sliding sleeve, the horizontal section of the connecting seat is arranged in parallel with the transmission rod, and two ends of the connecting seat are respectively connected with the blocking strip and the welding gun.
5. The intermittent spot welder of claim 4, wherein: the top of the connecting seat is rotatably connected with the sliding sleeve, so that the front and rear positions of the blocking strip and the welding gun are adjusted.
6. The intermittent spot welder of claim 4, wherein: the connecting seat horizontal section is hollow and is provided with a direct current power supply, wherein one end of the connecting blocking strip is also provided with a cavity for the movable switch to rotate, and the movable switch, the electromagnet and the direct current power supply are respectively connected in series by an electric wire arranged in the connecting seat horizontal section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711496172.2A CN107962286B (en) | 2017-12-31 | 2017-12-31 | Intermittent spot welder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711496172.2A CN107962286B (en) | 2017-12-31 | 2017-12-31 | Intermittent spot welder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107962286A CN107962286A (en) | 2018-04-27 |
| CN107962286B true CN107962286B (en) | 2023-12-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711496172.2A Active CN107962286B (en) | 2017-12-31 | 2017-12-31 | Intermittent spot welder |
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| Country | Link |
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| CN (1) | CN107962286B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06126468A (en) * | 1992-10-16 | 1994-05-10 | Niles Parts Co Ltd | Spot welding device |
| JPH06238462A (en) * | 1993-02-16 | 1994-08-30 | Seki Kogyo Kk | Spot welding equipment for nut |
| CN2258803Y (en) * | 1996-03-27 | 1997-08-06 | 镇江无线电专用设备厂 | Spot-welder |
| CN201490555U (en) * | 2009-05-20 | 2010-05-26 | 廖国安 | Automatic double-end enamelled wire spot-welding machine |
| CN204234966U (en) * | 2014-10-27 | 2015-04-01 | 浙江田中精机股份有限公司 | Spot welding device |
| CN106041282A (en) * | 2016-07-11 | 2016-10-26 | 章勤正 | Novel continuous spot welding device |
| JP2017006982A (en) * | 2015-06-23 | 2017-01-12 | 青山 省司 | Electrode for electric resistance welding |
| CN206500762U (en) * | 2017-01-17 | 2017-09-19 | 中山市幸鑫金属制品有限公司 | A kind of automatic line arranging machine of woven wire |
| CN207787957U (en) * | 2017-12-31 | 2018-08-31 | 重庆海国科技有限公司 | A kind of discontinuous mash welder |
-
2017
- 2017-12-31 CN CN201711496172.2A patent/CN107962286B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06126468A (en) * | 1992-10-16 | 1994-05-10 | Niles Parts Co Ltd | Spot welding device |
| JPH06238462A (en) * | 1993-02-16 | 1994-08-30 | Seki Kogyo Kk | Spot welding equipment for nut |
| CN2258803Y (en) * | 1996-03-27 | 1997-08-06 | 镇江无线电专用设备厂 | Spot-welder |
| CN201490555U (en) * | 2009-05-20 | 2010-05-26 | 廖国安 | Automatic double-end enamelled wire spot-welding machine |
| CN204234966U (en) * | 2014-10-27 | 2015-04-01 | 浙江田中精机股份有限公司 | Spot welding device |
| JP2017006982A (en) * | 2015-06-23 | 2017-01-12 | 青山 省司 | Electrode for electric resistance welding |
| CN106041282A (en) * | 2016-07-11 | 2016-10-26 | 章勤正 | Novel continuous spot welding device |
| CN206500762U (en) * | 2017-01-17 | 2017-09-19 | 中山市幸鑫金属制品有限公司 | A kind of automatic line arranging machine of woven wire |
| CN207787957U (en) * | 2017-12-31 | 2018-08-31 | 重庆海国科技有限公司 | A kind of discontinuous mash welder |
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| Publication number | Publication date |
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| CN107962286A (en) | 2018-04-27 |
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Effective date of registration: 20231130 Address after: Yin Jia Dian San Cun, Jiaoxi Town, Jiaozhou City, Qingdao City, Shandong Province 266300 Applicant after: QINGDAO RAYFORE INDUSTRY CO.,LTD. Address before: 402260 Shuangfu Industrial Park, Jiangjin District, Chongqing Applicant before: CHONGQING HAIGUO TECHNOLOGY Co.,Ltd. |
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