CN217749766U - Welding machine for motor armature and bus bar - Google Patents

Welding machine for motor armature and bus bar Download PDF

Info

Publication number
CN217749766U
CN217749766U CN202220665872.XU CN202220665872U CN217749766U CN 217749766 U CN217749766 U CN 217749766U CN 202220665872 U CN202220665872 U CN 202220665872U CN 217749766 U CN217749766 U CN 217749766U
Authority
CN
China
Prior art keywords
welding
armature
bus bar
transmission
tray
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202220665872.XU
Other languages
Chinese (zh)
Inventor
陈琦
周华国
廖建勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Honest Mechatronic Equipment Co Ltd
Original Assignee
Shenzhen Honest Mechatronic Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Honest Mechatronic Equipment Co Ltd filed Critical Shenzhen Honest Mechatronic Equipment Co Ltd
Priority to CN202220665872.XU priority Critical patent/CN217749766U/en
Application granted granted Critical
Publication of CN217749766U publication Critical patent/CN217749766U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Manufacture Of Motors, Generators (AREA)

Abstract

The utility model relates to a motor assembly technical field especially relates to a motor armature and busbar welding machine. The utility model provides a motor armature and bus bar welding machine, which comprises a workbench, wherein a transmission mechanism and a welding mechanism are arranged on the workbench, and the welding mechanism is arranged above the transmission mechanism; the conveying mechanism comprises a conveying material tray, a conveying material channel and a jacking rotating mechanism, the conveying material tray is slidably arranged on the conveying material channel, and the jacking rotating mechanism is arranged at the bottom of the conveying material tray; welding mechanism includes welder and the power module who is connected with welder electricity, and welder includes first welding part, second welding part and centre gripping driving piece, and first welding part and second welding part are close to each other under the drive of centre gripping driving piece and carry out centre gripping and welding to the copper wire on the armature and the flat copper line on the busbar. The utility model discloses it is low with the busbar welding in-process manual welding work efficiency to aim at solving current motor armature, and can appear that the deviation appears in the welding seam and lead to the poor technical problem of motor quality.

Description

Welding machine for motor armature and bus bar
Technical Field
The utility model relates to a motor assembly technical field especially relates to a motor armature and busbar welding machine.
Background
The motor is the main energy supply mechanism of all kinds of equipment at present, by the wide application in each aspect field of production life, in the motor, the stator is the main core part of motor, need weld the flat copper line on the copper line and the BUSBAR (BUSBAR) of the motor armature one by one as shown in figure 2 in the production process together. The existing welding mode is that the welding gun is usually held by hands to weld and fix the flat copper wire, but the manual welding is used for welding and fixing the flat copper wire, so that the processing efficiency is lower, and in the manual welding process, the deviation of the welding line is often easy to occur, so that the welding strength and the welding quality are influenced, and the service life of the motor is greatly reduced.
Accordingly, it is desirable to provide a motor armature and bus bar welding machine to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a motor armature and busbar welding machine, the utility model discloses it is low with busbar welding in-process manual welding work efficiency to aim at solving current motor armature, and can appear that the welding seam deviation appears and lead to the technical problem that motor quality is poor.
In order to achieve the above object, the present invention provides a welding machine for an armature and a bus bar of an electric machine, comprising a worktable, wherein the worktable is provided with a transmission mechanism for transmitting the armature and the bus bar and a welding mechanism for fusion welding the armature and the bus bar together, and the welding mechanism is arranged above the transmission mechanism; the transmission mechanism comprises a transmission material tray for loading the armature and the busbar, a transmission material channel for transporting the transmission material tray and a jacking rotating mechanism for jacking the transmission material tray and driving the transmission material tray to rotate on the horizontal plane, the transmission material tray is slidably arranged on the transmission material channel, and the jacking rotating mechanism is arranged at the bottom of the transmission material tray; welding mechanism include welder and with the power module that the welder electricity is connected, welder includes first welding part, second welding part and drive first welding part with the centre gripping driving piece that the second welding part is close to or keeps away from each other, first welding part with the second welding part is close to each other under the drive of centre gripping driving piece and carries out centre gripping and welding to copper line on the armature and the flat type copper line on the busbar.
Furthermore, the welding mechanism further comprises a first support, a welding assembly is fixed on each of two sides of the first support, the welding assembly comprises the welding gun, a first lifting driving piece for driving the welding gun to lift and a first longitudinal moving driving piece for driving the welding gun to move back and forth, the first longitudinal moving driving piece is fixed on the first support, the first lifting driving piece is arranged at the output end of the first longitudinal moving driving piece, and the welding gun is arranged at the output end of the first lifting driving piece.
Furthermore, the first lifting driving piece is further provided with a mounting seat, the welding gun is fixed on the mounting seat, a bendable sewage discharge pipe is further arranged on the mounting seat, the sewage discharge pipe comprises a pipeline portion, a conical air inlet formed in one end of the pipeline portion and an air outlet formed in the other end of the pipeline portion, and one end, close to the air outlet, of the pipeline portion is fixed on the mounting seat.
Furthermore, the first welding portion is of a vertical rod-shaped structure, the second welding portion is of an obliquely arranged rod-shaped mechanism, a vertical surface is formed at the tail end of the second welding portion and is in contact with the first welding portion, and a protruding portion used for fixing the flat copper wire is formed on the vertical surface.
Furthermore, the jacking and rotating mechanism comprises a second bracket, a second lifting driving piece for driving the conveying material tray to lift and a rotating driving piece for driving the conveying material tray to rotate on the horizontal plane; the second lifting driving piece is fixed in on the second support, the output of second lifting driving piece is provided with first mounting panel, be provided with the second mounting panel on the first mounting panel, rotary driving piece is fixed in the bottom of second mounting panel, rotary driving piece's output is provided with the connecting plate, the transmission charging tray set up in but on the connecting plate pluggable.
Furthermore, at least two positioning columns are arranged on the connecting plate, a plurality of positioning holes are correspondingly formed in the transmission material plate, and the transmission material plate is arranged on the connecting plate in the positioning holes through the positioning columns in an inserted mode.
Further, an armature placing station and a confluence discharging station are arranged on the transmission tray, a first placing seat for placing the armature is arranged on the armature placing station, a first placing cavity is formed in the first placing seat, a second placing seat for placing the busbar is arranged on the confluence discharging station, and a second placing cavity is formed in the second placing seat.
Furthermore, the number of the positioning columns is two and the positioning columns are distributed along the diagonal line of the connecting plate.
In the scheme of the application, the motor armature and bus welding machine comprises a workbench, a transmission mechanism and a welding mechanism, wherein the transmission mechanism and the welding mechanism are arranged on the workbench. The transmission mechanism comprises a transmission material tray and a transmission material channel, the armature and the bus bar are placed on the transmission material tray, and the transmission material tray transports the armature and the bus bar to the welding mechanism for welding on the transmission material channel. Welding mechanism includes welder and power module, and wherein, welder includes first welding part, second welding part and centre gripping driving piece. The first welding part and the second welding part can clamp and weld the copper wire on the armature and the flat copper wire on the bus bar under the driving of the clamping driving piece. In addition, the bottom of the conveying tray is also provided with a jacking rotating mechanism which can jack the conveying tray and drive the conveying tray to rotate on the horizontal plane so as to be matched with a welding mechanism for welding. The utility model discloses a design through workstation, transmission device, jacking rotary mechanism and welding mechanism has effectively solved current motor armature and busbar welding in-process manual welding work efficiency low, and can appear the welding seam and the deviation appears and lead to the technical problem that motor quality is poor.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a motor armature and bus bar welding machine according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a conveying tray in the embodiment of the present invention;
fig. 3 is a schematic structural diagram of a welding mechanism according to an embodiment of the present invention;
FIG. 4 is an enlarged view of a portion of the second weld at A in FIG. 3;
fig. 5 is a schematic structural view of the jacking rotation mechanism according to the embodiment of the present invention.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
The reference numbers illustrate:
100-workbench, 101-armature, 102-bus bar, 200-transmission mechanism, 210-transmission tray, 211-positioning hole, 212-armature placing station, 213-bus bar placing station, 214-first placing seat, 215-first placing cavity, 216-second placing seat, 217-second placing cavity, 218-handle, 219-arrow, 220-transmission material channel, 300-welding mechanism, 310-first bracket, 311-welding gun, 312-first lifting driving piece, 313-first longitudinal movement driving piece, 314-first welding piece, 315-second welding piece, 315 a-bulge, 316-clamping driving piece, 317-mounting seat, 318-sewage pipe, 318 a-pipe part, 318 b-air inlet, 318 c-air outlet, 320-power supply module, 400-jacking rotation mechanism, 410-second bracket, 411-first mounting plate, 412-second mounting plate, 420-second lifting driving piece, 430-rotation driving piece, 431-connecting plate, and 432-positioning post.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, back, 8230; \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Please refer to fig. 1 to 5. The utility model provides a motor armature and busbar welding machine, including workstation 100, be provided with on workstation 100 and be used for transmitting transmission mechanism 200 of armature 101 and busbar 102 and with armature 101 and busbar 102 fusion welding together's welding mechanism 300, welding mechanism 300 sets up above transmission mechanism 200; the transmission mechanism 200 comprises a transmission tray 210 for loading the armature 101 and the bus bar 102 and a transmission channel 220 for transmitting the transmission tray 210, the transmission tray 210 is slidably arranged on the transmission channel 220, and the bottom of the transmission tray 210 is provided with a jacking and rotating mechanism 400 for jacking the transmission tray 210 and driving the transmission tray 210 to rotate on the horizontal plane; the welding mechanism 300 comprises a welding gun 311 and a power supply module 320 electrically connected with the welding gun 311, wherein the welding gun 311 comprises a first welding part 314, a second welding part 315 and a clamping driving part 316 for driving the first welding part 314 and the second welding part 315 to approach or separate from each other, and the first welding part 314 and the second welding part 315 approach to each other under the driving of the clamping driving part 316 to clamp and weld the copper wire on the armature 101 and the flat copper wire on the bus bar 102. Specifically, in the present embodiment, the first welding portion 314 is a vertical rod-shaped structure, the second welding portion 315 is an obliquely arranged rod-shaped structure, a vertical surface is formed at the end of the second welding portion 315 to contact with the first welding portion 314, and a protrusion 315a for fixing the flat copper wire is formed on the vertical surface. When the second welding portion 315 is driven by the clamping driving member 316 to approach the first welding portion 314, the vertical surface contacts the first welding portion 314, and the protruding portion 315a fixes the flat copper wire on the bus bar 102 and welds the flat copper wire on the bus bar 102 to the copper wire of the armature 101. It should be noted that the first welding portion 314 and the second welding portion 315 are welded by resistance welding, and welding resistances are disposed in both the first welding portion 314 and the second welding portion 315. Specifically, in the present embodiment, the first welding portion 314 is a positive pole resistor, the second welding portion 315 is a negative pole resistor, and the clamping driving member 316 is a driving motor.
The jacking and rotating mechanism 400 comprises a second bracket 410, a second lifting driving member 420 for driving the conveying tray 210 to lift, and a rotating driving member 430 for driving the conveying tray 210 to rotate on the horizontal plane; the second lifting driving member 420 is fixed on the second support 410, the output end of the second lifting driving member 420 is provided with a first mounting plate 411, the first mounting plate 411 is provided with a second mounting plate 412, the rotary driving member 430 is fixed at the bottom of the second mounting plate 412, the output end of the rotary driving member 430 is provided with a connecting plate 431, and the transmission tray 210 is arranged on the connecting plate 431 in a pluggable manner. Furthermore, at least two positioning columns 432 are arranged on the connecting plate 431, a plurality of positioning holes 211 are correspondingly arranged on the transmission tray 210, and the transmission tray 210 is inserted into the positioning holes 211 through the positioning columns 432 and is arranged on the connecting plate 431. In this embodiment, the number of the positioning pillars 432 is two and the positioning pillars are distributed along a diagonal of the connecting plate 431. Second lift driving piece 420 can be flexible pole, telescopic cylinder or flexible pneumatic cylinder etc. and rotary driving piece 430 can be rotating electrical machines, rotating cylinder or rotary hydraulic cylinder etc. specifically, in this embodiment, second lift driving piece 420 is flexible motor, and rotary driving piece 430 is rotating electrical machines. Further, an armature placing station 212 and a bus bar placing station 213 are arranged on the conveying tray 210, a first placing seat 214 for placing the armature 101 is arranged on the armature placing station 212, a first placing cavity 215 is formed on the first placing seat 214, a second placing seat 216 for placing the bus bar 102 is arranged on the bus bar placing station 213, and a second placing cavity 217 is formed on the second placing seat 216. In addition, two side edges of the conveying tray 210 are provided with a handle 218, and the conveying tray 210 is provided with an arrow 219 for marking the conveying direction. The handle 218 is provided to facilitate the worker to take and place the transportation tray 210, and the arrow 219 is provided to facilitate the worker to place the transportation tray 210 on the transportation path 220 in the correct direction.
As a specific implementation manner of this embodiment, the welding mechanism 300 further includes a first support 310, a welding assembly is fixed on both sides of the first support 310, the welding assembly includes a welding gun 311, a first lifting driving member 312 for driving the welding gun 311 to lift, and a first longitudinal driving member 313 for driving the welding gun 311 to move back and forth, the first longitudinal driving member 313 is fixed on the first support 310, the first lifting driving member 312 is disposed at an output end of the first longitudinal driving member 313, and the welding gun 311 is disposed at an output end of the first lifting driving member 312. The welding gun 311 welds the armature 101 on the transfer tray 210 and the bus bar 102 thereon by the first elevating drive member 312 and the first vertical movement drive member 313. Meanwhile, the transmission tray 210 can move transversely on the transmission channel 220 and rotate under the driving of the rotary driving piece 430, and the welding gun 311 is matched with the transmission tray 210 to weld each flat copper wire on the transmission tray 210. Further, the first lifting driving member 312 is further provided with a mounting base 317, the welding gun 311 is fixed on the mounting base 317, the mounting base 317 is further provided with a bendable sewage draining pipe 318, the sewage draining pipe 318 comprises a pipe portion 318a, a conical air inlet 318b formed at one end of the pipe portion 318a and an air outlet 318c formed at the other end of the pipe portion 318a, and one end of the pipe portion 318a close to the air outlet 318c is fixed on the mounting base 317. When the welding gun 311 performs welding, the gas inlet 318b of the sewage pipe 318 may be disposed toward the welding gun 311 through the integrated piping portion 318a, and at the same time, the gas outlet 318c may be connected to a gas extractor (not shown), so that waste gas generated during welding may be sucked and discharged. It is worth mentioning that the air outlet 318c is connected to the air pump through a suction pipe.
In the scheme of the application, the motor armature and bus bar welding machine comprises a workbench 100, a transmission mechanism 200 and a welding mechanism 300, wherein the transmission mechanism 200 and the welding mechanism 300 are arranged on the workbench 100. The conveying mechanism 200 comprises a conveying tray 210 and a conveying channel 220, the armature 101 and the bus bar 102 are placed on the conveying tray 210, and the conveying tray 210 conveys the armature 101 and the bus bar 102 to the welding mechanism 300 to be welded on the conveying channel 220. The welding mechanism 300 includes a welding gun 311 and a power module 320, wherein the welding gun 311 includes a first weld 314, a second weld 315, and a clamp drive 316. The first welding part 314 and the second welding part 315 can clamp and weld the copper wire of the armature 101 and the flat copper wire of the bus bar 102 by the driving of the clamping driving member 316. In addition, the bottom of the transmission tray 210 is further provided with a jacking and rotating mechanism 400 which can jack the transmission tray 210 and drive the transmission tray to rotate on the horizontal plane so as to cooperate with the welding mechanism 300 to perform welding. The utility model discloses a design through workstation 100, transmission device 200, jacking rotary mechanism 400 and welding mechanism 300 has effectively solved current motor armature 101 and busbar 102 welding process in the manual welding work efficiency low, and can appear the welding seam and the deviation appears and lead to the technical problem that motor quality is poor.
The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims (8)

1. The welding machine for the armature and the bus bar of the motor is characterized by comprising a workbench, wherein the workbench is provided with a transmission mechanism for transmitting the armature and the bus bar and a welding mechanism for fusion welding the armature and the bus bar together, and the welding mechanism is arranged above the transmission mechanism; the transmission mechanism comprises a transmission material tray for loading the armature and the bus bar, a transmission material channel for transporting the transmission material tray and a jacking rotating mechanism for jacking the transmission material tray and driving the transmission material tray to rotate on a horizontal plane, the transmission material tray is slidably arranged on the transmission material channel, and the jacking rotating mechanism is arranged at the bottom of the transmission material tray; welding mechanism include welder and with the power module that the welder electricity is connected, welder includes first welding part, second welding part and drive first welding part with the centre gripping driving piece that the second welding part is close to or keeps away from each other, first welding part with the second welding part is close to each other under the drive of centre gripping driving piece and carries out centre gripping and welding to copper line on the armature and the flat type copper line on the busbar.
2. The machine according to claim 1, wherein the welding mechanism further comprises a first frame, a welding assembly is fixed on each of two sides of the first frame, the welding assembly comprises the welding gun, a first lifting driving member for driving the welding gun to lift, and a first longitudinal driving member for driving the welding gun to move back and forth, the first longitudinal driving member is fixed on the first frame, the first lifting driving member is arranged at an output end of the first longitudinal driving member, and the welding gun is arranged at an output end of the first lifting driving member.
3. The machine as claimed in claim 2, wherein the first lifting driving member further comprises a mounting seat, the welding gun is fixed on the mounting seat, the mounting seat further comprises a bendable drain pipe, the drain pipe comprises a pipe portion, a tapered air inlet formed at one end of the pipe portion and an air outlet formed at the other end of the pipe portion, and one end of the pipe portion close to the air outlet is fixed on the mounting seat.
4. The machine armature and bus bar welder according to claim 1, wherein the first welding part is a vertical rod-shaped structure, the second welding part is an obliquely arranged rod-shaped structure, a vertical surface is formed at the end of the second welding part and contacts with the first welding part, and a protrusion for fixing the flat copper wire is formed on the vertical surface.
5. The machine according to claim 1, wherein the lifting and rotating mechanism comprises a second bracket, a second lifting driving member for driving the transportation tray to lift, and a rotary driving member for driving the transportation tray to rotate on a horizontal plane; the second lifting driving piece is fixed in on the second support, the output of second lifting driving piece is provided with first mounting panel, be provided with the second mounting panel on the first mounting panel, rotary driving piece is fixed in the bottom of second mounting panel, rotary driving piece's output is provided with the connecting plate, the transmission charging tray set up in but on the connecting plate pluggable.
6. The machine according to claim 5, wherein said connecting plate has at least two positioning posts, said transmission tray has a plurality of positioning holes, and said transmission tray is inserted into said positioning holes through said positioning posts and disposed on said connecting plate.
7. The motor armature and bus bar welding machine according to claim 1, wherein the transmission tray is provided with an armature placing station and a bus bar placing station, the armature placing station is provided with a first placing seat for placing the armature, the first placing seat is provided with a first placing cavity, the bus bar placing station is provided with a second placing seat for placing the bus bar, and the second placing seat is provided with a second placing cavity.
8. The machine armature and bus bar welder of claim 6, wherein the number of positioning posts is two and is distributed along a diagonal of the connecting plate.
CN202220665872.XU 2022-03-25 2022-03-25 Welding machine for motor armature and bus bar Active CN217749766U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202220665872.XU CN217749766U (en) 2022-03-25 2022-03-25 Welding machine for motor armature and bus bar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202220665872.XU CN217749766U (en) 2022-03-25 2022-03-25 Welding machine for motor armature and bus bar

Publications (1)

Publication Number Publication Date
CN217749766U true CN217749766U (en) 2022-11-08

Family

ID=83882919

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202220665872.XU Active CN217749766U (en) 2022-03-25 2022-03-25 Welding machine for motor armature and bus bar

Country Status (1)

Country Link
CN (1) CN217749766U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117340515A (en) * 2023-11-08 2024-01-05 浙江特种电机有限公司 High-frequency welding production equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117340515A (en) * 2023-11-08 2024-01-05 浙江特种电机有限公司 High-frequency welding production equipment
CN117340515B (en) * 2023-11-08 2024-04-09 浙江特种电机有限公司 High-frequency welding production equipment

Similar Documents

Publication Publication Date Title
CN217749766U (en) Welding machine for motor armature and bus bar
CN202479680U (en) Secondary battery spot welding machine
CN108381079A (en) A kind of double-station automatic welding equipment and its technique
CN209919230U (en) Manifold manufacturing equipment
CN211276942U (en) Novel spot welder is used in automobile parts processing
CN209969838U (en) Butt-joint welding equipment for button battery
CN209050342U (en) A kind of tooling for pipeline welding
CN211840732U (en) Auxiliary device for welding
CN211490064U (en) Resistance spot welder loading attachment
CN214518132U (en) Quick spot welding former of kettle mouth
CN206779738U (en) The conducting heavy current mechanism of bonding machine
CN214868157U (en) Auxiliary automatic welding device for bent sheet metal parts
CN217096332U (en) Welding seam centering mechanism of straight welding machine tool
CN209716815U (en) A kind of bonding machine of sheet metal component processing
CN216730280U (en) Welding tool structure for carrying motor bracket
CN213080372U (en) Rotor spot welding test all-in-one
CN217942298U (en) Terminal welding machine is used in micro-transformer processing
CN215919477U (en) Welding device for capacitor pin lead
CN109604795A (en) A kind of spiral case supporting block welding equipment
CN211465219U (en) Main-grid-free solar cell welding device
CN213813793U (en) Paster inductance soldering tin detecting system
CN219443809U (en) Battery spot welding equipment
CN211638624U (en) Spot welding machine for machining automobile exhaust pipe
CN216730342U (en) A piece together some frocks for tower crane upper bracket otic placode
CN209986373U (en) Welding structure on DC wire welding machine

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant