CN106862729A - A kind of closed-type circular welding bead automatic arc welding - Google Patents

A kind of closed-type circular welding bead automatic arc welding Download PDF

Info

Publication number
CN106862729A
CN106862729A CN201710186127.0A CN201710186127A CN106862729A CN 106862729 A CN106862729 A CN 106862729A CN 201710186127 A CN201710186127 A CN 201710186127A CN 106862729 A CN106862729 A CN 106862729A
Authority
CN
China
Prior art keywords
welding gun
welding
operating room
adjustment
switch
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.)
Granted
Application number
CN201710186127.0A
Other languages
Chinese (zh)
Other versions
CN106862729B (en
Inventor
宋全美
靳启锋
赵成栋
金永水
许云飞
李凯
牛梦荷
李举
王朋
赵强
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.)
Shandong Meng Wo Speed Changer Co Ltd
Original Assignee
Shandong Meng Wo Speed Changer 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 Shandong Meng Wo Speed Changer Co Ltd filed Critical Shandong Meng Wo Speed Changer Co Ltd
Priority to CN201710186127.0A priority Critical patent/CN106862729B/en
Publication of CN106862729A publication Critical patent/CN106862729A/en
Application granted granted Critical
Publication of CN106862729B publication Critical patent/CN106862729B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/16Arc welding or cutting making use of shielding gas
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/12Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/32Accessories

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding In General (AREA)

Abstract

The invention discloses a kind of closed-type circular welding bead automatic arc welding,Its second insulation board is fixedly installed in closed operating room,Weld clamp device is fixedly installed on the second insulation board top,Weld clamp device is provided with workpiece tool plate,The rotary drive motor for being arranged at the second insulation board lower surface is connected by motor connection set with weld clamp device,Operating room upper plate lower section is fixedly connected with cylinder by U-shaped support frame,The expansion link bottom of cylinder is fixedly connected with welding gun support arm,The welding gun support arm other end is provided with welding gun by adjusting device for welding gun,Operating room outside is provided with welding gun extension elongation adjustment switch,Welding gun Height Adjustment is switched,Angle of welding gun adjustment switch and rotary drive motor adjustment of rotational speed switch,Wire feeder is connected with welding gun,Carbon dioxide snorkel is connected with welding gun,Reduce electric welding smog and the solder influence welding quality for splashing;Welding quality is improved, the depth of weld is uniform;Staff is prevented effectively to be got an electric shock during use.

Description

A kind of closed-type circular welding bead automatic arc welding
Technical field:
The invention belongs to carbon-dioxide arc welding connection technology field, it is related to a kind of closed-type circular welding bead automatic arc welding, Have functions that welding efficiency is high and steady quality, special factory's batch weld job.
Background technology:
Welded in machinery manufacturing industry and generally use human weld or robot welding, manual welding efficiency is low, the amount of labour is big; Robot welding quality is high, and welding is fast, but cost is too high, and manual welding and robotic welding technology are unsuitable for circular weldering The welding manner in road.It is logical to produce that to use carbon dioxide be protective gas come shielded arc welding in electrode welding process, sometimes using CO2+Ar Mixed gas, be mainly used in manual welding, it is high to the requirement of operator's technical merit however, manual welding welding quality unstable, It is unsuitable for batch production high-volume to weld.Due to the Special Influence of the thermophysical property of carbon dioxide, normal welding electricity is used During source, end of welding head fusing metal is not likely to form the axially free transition of balance, it usually needs using short circuit and molten drop necking down It is quick-fried disconnected, therefore, free transitional face ratio is welded with MIG, to splash more, quality control is difficult.In electrode welding process produce smog and have Evil light causes environmental pollution, and harm operating personnel are healthy.However, using robot welding, not only capital input is high, and And complex structure, build are huge, movement is difficult, adaptability is poor, program input is cumbersome, and maintenance work is difficult, equally to operation The requirement of workman's technical merit is high.Chinese patent 201020633579.2 discloses a kind of automatic welding device of circular weld bead, it by Frame, CO2 shield welder, welding torch position manipulation device, Workpiece rotating device and welding control system composition, welding gun position Put manipulation device to be made up of welding gun cylinder and welding gun support, welding gun cylinder is fixed in frame, welding gun branch is fixed on its piston rod Frame;The Workpiece rotating device is made up of workpiece positioning seat, gear, tooth bar and racks cylinders, and the bottom of workpiece positioning seat is affixed There is rotating shaft, rotating shaft is connected by bearing with gantry rotation;Gear is fixed in the rotating shaft of workpiece positioning seat, and rack and pinion is mutually nibbled Close, and be connected with the piston rod of racks cylinders, but its solder for splashing influences welding quality.Additionally, existing circular welding bead electricity Welding machine generally is open welding, it is impossible to avoid welding flue gas, welding light to environment and staff in welding process Harm, in addition, easily being caused welding quality uneven by external ambient influnence in open welding process.Therefore, research and develop A kind of automatic motor of circular welding bead, has functions that welding efficiency is high and steady quality, it is adaptable to which special factory's batch is welded Operation, with good economic benefit and social value.
The content of the invention:
It is an object of the invention to the shortcoming for overcoming prior art to exist, seek to design a kind of closed-type circular welding bead automatic Electric welding machine, it is to avoid the harm of flue gas, welding light to environment and staff is welded in circular welding bead electrode welding process, is solved Automaticity is low during circular electric welding, the problem of welding quality unstable.
To achieve these goals, the agent structure the present invention relates to closed-type circular welding bead automatic arc welding includes work Room, the first insulation board, the second insulation board, weld clamp device, workpiece tool plate, rotary drive motor, motor connection set, welding gun Extension elongation adjustment switch, welding gun Height Adjustment switch, angle of welding gun adjustment switch, rotary drive motor adjustment of rotational speed switch, U Type support frame, cylinder, expansion link, welding gun support arm, adjusting device for welding gun, welding gun, carbon dioxide snorkel, wire feeder, electricity Machine and foot control switch;Second insulation board is fixedly installed in closed operating room, and it is exhausted that weld clamp device is fixedly installed on second Listrium top, weld clamp device is provided with workpiece tool plate, and the rotary drive motor for being arranged at the second insulation board lower surface leads to Motor connection set is crossed to be connected with weld clamp device and rotary drive motor bottom contacts with the insulation board of operating room's base plate first, work Make room upper plate lower section and cylinder is fixedly connected with by U-shaped support frame, the expansion link bottom of cylinder is fixed with welding gun support arm and connected Connect, the welding gun support arm other end is provided with welding gun by adjusting device for welding gun, right plate outside in operating room's is provided with welding gun and stretches out length Degree adjustment switch, welding gun Height Adjustment switch, angle of welding gun adjustment switch and rotary drive motor adjustment of rotational speed switch, welding gun are high Degree adjustment switch is connected the extension elongation of control expansion link with cylinder, and welding gun extension elongation adjustment switch and angle of welding gun adjustment are opened Guan Jun is connected with adjusting device for welding gun, be respectively used to control welding gun support arm extension elongation and welding gun support arm and welding gun it Between angle, wire feeder and motor are arranged on the outside of operating room;Wire feeder is connected with welding gun, carbon dioxide snorkel with Welding gun is connected, and the supply of welding wire feeding rate and carbon dioxide is controlled by welding gun, and welding gun is by foot control switch and control Motor electrically connects the operation of controlled motor.
Upper plate left side in operating room's of the present invention top is provided with the air inlet pipe communicated with operating room, on rear side of operating room Supporting plate is provided with the pipe communicated with operating room, and air exhauster is provided with pipe;Air exhauster is opened by the weldering in operating room Cigarette receiving gas is discharged by pipe.
Operating room's front side board of the present invention is made up of sideboard and fixed dam, and sideboard is provided with observer Hole and handle;Welding gun support arm one end and centre position are flexibly connected for protecting by fix bar with U-shaped support frame bottom respectively Hold welding gun support arm balance.
Welding gun extension elongation of the present invention adjustment switch, welding gun Height Adjustment switch, angle of welding gun adjustment switch and Adjustment of rotational speed switch is electrically connected with PLC control ends respectively.
Compared with prior art, processing mode is welding gun pneumatic control to the present invention, and position is adjustable, and welding gun is fed into during welding Position, clamping device is rotated by motor, completes welding;Peripheral hardware formula motor and welding wire feeding mechanism, are easy to radiate, are convenient for changing Welding wire;Welding terminates, and original position is return in welding gun pneumatic control, gives Workpiece clamping headspace;PLC electrical equipment controls, time, speed It is adjustable controllable, improve production efficiency;Eliminate that original operator's labour intensity is big, waste time and energy, hinder eye and electric welding smoke zone Injury;Reduce electric welding smog and the solder influence welding quality for splashing;Welding quality is improved, the depth of weld is uniform;Its Simple structure, scientific in principle reliability, it is easy to operate, control precisely, efficient low-consume, have a safety feature, it is with low cost;In addition first The setting of insulation board and the second insulation board is prevented effectively from staff and is got an electric shock during use.
Brief description of the drawings:
Fig. 1 is the front view of sealed circular welding bead automatic arc welding of the present invention.
Fig. 2 is the top view of circular welding bead automatic arc welding of the present invention.
Specific embodiment:
Below by embodiment and with reference to accompanying drawing, the invention will be further described.
Embodiment:
As illustrated in fig. 1 and 2, the agent structure of the closed-type circular welding bead automatic arc welding that the present embodiment is related to includes work Room 1, the first insulation board 2, the second insulation board 3, weld clamp device 4, workpiece tool plate 5, rotary drive motor 6, motor connection Set 7, sideboard 8, fixed dam 9, observation manhole 10, handle 11, pipe 12, air exhauster 13, the adjustment of welding gun extension elongation Switch 14, welding gun Height Adjustment switch 15, angle of welding gun adjustment switch 16, rotary drive motor adjustment of rotational speed switch 17, air inlet Pipe 18, U-shaped support frame 19, cylinder 20, expansion link 21, welding gun support arm 22, fix bar 23, adjusting device for welding gun 24, welding gun 25, Carbon dioxide snorkel 26, wire feeder 27, motor 28 and foot control switch 29;Second insulation board 3 is fixedly installed on closed work Make in room 1, weld clamp device 4 is fixedly installed on the top of the second insulation board 3, weld clamp device 4 is provided with workpiece tool plate 5, be arranged at the rotary drive motor 6 of the lower surface of the second insulation board 3 by motor connection cover 7 be connected with weld clamp device 4 and The bottom of rotary drive motor 6 contacts with the first insulation board of base plate 2 of operating room 1, and rotary drive motor 6 can drive workpiece tool plate 5 around rotary drive motor 6 vertical central shaft rotate, the upper plate of operating room 1 lower section gas is fixedly connected with by U-shaped support frame 19 Cylinder 20, the bottom of expansion link 21 of cylinder 20 is fixedly connected with welding gun support arm 22, and the other end of welding gun support arm 22 is adjusted by welding gun Regulating device 24 is provided with welding gun 25, and the right plate of operating room 1 outside is provided with welding gun extension elongation adjustment switch 14, welding gun Height Adjustment Switch 15, angle of welding gun adjustment switch 16 and rotary drive motor adjustment of rotational speed switch 17, welding gun Height Adjustment switchs 15 and gas Cylinder 20 connection control expansion link 21 extension elongation, welding gun extension elongation adjustment switch 14 and angle of welding gun adjustment switch 16 with Adjusting device for welding gun 24 is connected, and is respectively used to control the extension elongation and welding gun support arm 22 and welding gun 25 of welding gun support arm 22 Between angle, wire feeder 27 and motor 28 are arranged on the outside of operating room 1;Wire feeder 27 is connected with welding gun 25, dioxy Change carbon snorkel 26 to be connected with welding gun 25, the supply of welding wire feeding rate and carbon dioxide, welding gun are controlled by welding gun 25 25 operations for electrically connecting controlled motor 28 with controlled motor 28 by foot control switch 29.
The upper plate left side of operating room 1 top that the present embodiment is related to is provided with the air inlet pipe 18 communicated with operating room, operating room 1 The supporting plate of rear side is provided with the pipe 12 communicated with operating room, pipe 12 and is provided with air exhauster 13;Open air exhauster 13 Welding flue gas in operating room 1 is discharged by pipe 12.
The front side board of operating room 1 that the present embodiment is related to is made up of sideboard 8 and fixed dam 9, and sideboard 8 is provided with Observation manhole 10 and handle 11;The one end of welding gun support arm 22 and centre position pass through fix bar 23 and the bottom of U-shaped support frame 19 respectively Portion is flexibly connected for keeping welding gun support arm 22 to balance.
Welding gun extension elongation adjustment switch 14, welding gun Height Adjustment switch 15, the angle of welding gun adjustment that the present embodiment is related to Switch 16 and adjustment of rotational speed switch 17 are electrically connected with PLC control ends respectively.
When the present embodiment is used, the connecting shaft by handle 11 by sideboard 8 around fixed dam 9 and sideboard 8 is beaten Open, part to be welded is placed on workpiece tool plate 5, first in PLC control ends input welding gun extension elongation, welding gun height, angle of welding gun With the rotating speed of rotary drive motor 6, welding gun 25 is adjusted to suitable position by PLC control ends according to the numerical value of input, while driving Dynamic rotary drive motor 6 drives workpiece to rotate, and the supply of welding wire feeding rate and carbon dioxide is controlled by welding gun 25, beats Drive foot control switch 29 and complete welding;In welding process, the smog of generation is excluded from pipe 12 by the operation of air exhauster 13, Welding situation can be observed by observing manhole 10;Situation adjusts welding parameter according to the observation, and butt welding taps into capable repairing.By adjusting The rotating speed of whole welding gun extension elongation, welding gun height, angle of welding gun and rotary drive motor 6, realizes the circuit orbit of different-diameter Welding.

Claims (4)

1. a kind of closed-type circular welding bead automatic arc welding, it is characterised in that agent structure include operating room, the first insulation board, Second insulation board, weld clamp device, workpiece tool plate, rotary drive motor, motor connection set, the adjustment of welding gun extension elongation are opened Close, welding gun Height Adjustment switch, angle of welding gun adjustment switch, rotary drive motor adjustment of rotational speed switch, U-shaped support frame, cylinder, Expansion link, welding gun support arm, adjusting device for welding gun, welding gun, carbon dioxide snorkel, wire feeder, motor and foot control switch;The Two insulation boards are fixedly installed in closed operating room, and weld clamp device is fixedly installed on the second insulation board top, weld clip Tight device is provided with workpiece tool plate, and the rotary drive motor for being arranged at the second insulation board lower surface is covered and weldering by motor connection Connect clamping device connection and rotary drive motor bottom contacts with the insulation board of operating room's base plate first, upper plate lower section in operating room's is logical Cross U-shaped support frame and be fixedly connected with cylinder, the expansion link bottom of cylinder is fixedly connected with welding gun support arm, and welding gun support arm is another End is provided with welding gun by adjusting device for welding gun, and it is high that right plate outside in operating room's is provided with welding gun extension elongation adjustment switch, welding gun Degree adjustment switch, angle of welding gun adjustment switch and rotary drive motor adjustment of rotational speed switch, welding gun Height Adjustment switch and cylinder The extension elongation of connection control expansion link, welding gun extension elongation adjustment switch and angle of welding gun adjustment switch are adjusted with welding gun and filled Connection is put, is respectively used to control the extension elongation and the angle between welding gun support arm and welding gun of welding gun support arm, wire feed dress Put the outside that operating room is arranged on motor;Wire feeder is connected with welding gun, and carbon dioxide snorkel is connected with welding gun, by weldering Rifle controls the supply of welding wire feeding rate and carbon dioxide, and welding gun electrically connects control electricity with controlled motor by foot control switch The operation of machine.
2. closed-type circular welding bead automatic arc welding according to claim 1, it is characterised in that operating room's upper plate left side Top is provided with the air inlet pipe communicated with operating room, and the supporting plate on rear side of operating room is provided with the pipe communicated with operating room, goes out Air exhauster is provided with smoke pipe;Air exhauster is opened to discharge the welding flue gas in operating room by pipe.
3. closed-type circular welding bead automatic arc welding according to claim 2, it is characterised in that operating room's front side board is by living Dynamic baffle plate and fixed dam composition, sideboard are provided with observation manhole and handle;Welding gun support arm one end and centre position point It is not flexibly connected with U-shaped support frame bottom for keeping welding gun support arm to balance by fix bar.
4. the closed-type circular welding bead automatic arc welding according to claim 1-3 Arbitrary Terms, it is characterised in that welding gun stretches out Length adjustment is switched, welding gun Height Adjustment switch, angle of welding gun adjustment switch and adjustment of rotational speed switch are electric with PLC control ends respectively Connection.
CN201710186127.0A 2017-03-27 2017-03-27 A kind of closed-type circular welding bead automatic arc welding Active CN106862729B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710186127.0A CN106862729B (en) 2017-03-27 2017-03-27 A kind of closed-type circular welding bead automatic arc welding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710186127.0A CN106862729B (en) 2017-03-27 2017-03-27 A kind of closed-type circular welding bead automatic arc welding

Publications (2)

Publication Number Publication Date
CN106862729A true CN106862729A (en) 2017-06-20
CN106862729B CN106862729B (en) 2019-05-14

Family

ID=59173013

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710186127.0A Active CN106862729B (en) 2017-03-27 2017-03-27 A kind of closed-type circular welding bead automatic arc welding

Country Status (1)

Country Link
CN (1) CN106862729B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107252952A (en) * 2017-07-26 2017-10-17 烟台杰瑞石油装备技术有限公司 A kind of end automatic soldering technique equipment
CN108274168A (en) * 2017-12-11 2018-07-13 安徽宝辰机电设备科技有限公司 A kind of guiding movement formula welding gun holding device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1042873A (en) * 1961-09-20 1966-09-14 Babcock & Wilcox Ltd Improvements in or relating to welding machines
CN2933682Y (en) * 2006-08-01 2007-08-15 无锡威孚力达催化净化器有限责任公司 Double circumferential seam automatic welding machine
CN201889575U (en) * 2010-11-30 2011-07-06 长城汽车股份有限公司 Automatic welding device of circular weld bead
CN202684286U (en) * 2012-04-17 2013-01-23 漳州联合华鑫焊接自动化设备有限公司 Robot welding workstation for exhaust manifold
CN202741898U (en) * 2012-06-05 2013-02-20 应城骏腾发自动焊接装备有限公司 Full-automatic CO2 girth arc welding machine
CN203495430U (en) * 2013-08-19 2014-03-26 泉州恒劲机械有限公司 Environmental protection type welding device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1042873A (en) * 1961-09-20 1966-09-14 Babcock & Wilcox Ltd Improvements in or relating to welding machines
CN2933682Y (en) * 2006-08-01 2007-08-15 无锡威孚力达催化净化器有限责任公司 Double circumferential seam automatic welding machine
CN201889575U (en) * 2010-11-30 2011-07-06 长城汽车股份有限公司 Automatic welding device of circular weld bead
CN202684286U (en) * 2012-04-17 2013-01-23 漳州联合华鑫焊接自动化设备有限公司 Robot welding workstation for exhaust manifold
CN202741898U (en) * 2012-06-05 2013-02-20 应城骏腾发自动焊接装备有限公司 Full-automatic CO2 girth arc welding machine
CN203495430U (en) * 2013-08-19 2014-03-26 泉州恒劲机械有限公司 Environmental protection type welding device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107252952A (en) * 2017-07-26 2017-10-17 烟台杰瑞石油装备技术有限公司 A kind of end automatic soldering technique equipment
CN107252952B (en) * 2017-07-26 2023-03-10 烟台杰瑞石油装备技术有限公司 Automatic end welding process equipment
CN108274168A (en) * 2017-12-11 2018-07-13 安徽宝辰机电设备科技有限公司 A kind of guiding movement formula welding gun holding device

Also Published As

Publication number Publication date
CN106862729B (en) 2019-05-14

Similar Documents

Publication Publication Date Title
CN201350542Y (en) Automatic welding machine special for hydrocylinder girth welding
CN208322586U (en) Annular shaped weld seam welding apparatus
CN204603613U (en) A kind of 5-shaft linkage numerical control manipulator bonding machine
CN102463404A (en) Portal-type automatic computer oil-cylinder welder
CN102275032A (en) Program control sidesway oil cylinder circumferential seam welding machine
CN104816112A (en) Five-axis linkage numerically-controlled mechanical hand welding machine
CN205147567U (en) Multi -point welding machine
CN107160008A (en) A kind of special welding machine for circular weld
CN107378191A (en) A kind of pipe fitting welding device, welding system and welding method
CN106862729A (en) A kind of closed-type circular welding bead automatic arc welding
CN104096955A (en) Aluminum busbar narrow-gap special MIG (Metal-Inert Gas) welding machine
KR20180080529A (en) Automatic welders for pipes
CN107116293B (en) A kind of automation spot-welding equipment
CN204621421U (en) A kind of box beam longitudinal seam welding equipment
CN110480222A (en) A kind of robot welding system
CN206474786U (en) A kind of portable automatic welding machine
CN207104065U (en) A kind of automatic soldering device
CN203292668U (en) Automatic argon arc welding machine
CN206662498U (en) Argon arc welding automatic welding machine
CN203409464U (en) Welding machine
CN211680462U (en) Welding machine edge inspection machine with adjustable edge distance
CN103862140B (en) Portable fully-automatic metal pipeline welding equipment
CN219402921U (en) Automatic girth welding machine
CN107127428A (en) A kind of oxygen gun sprayer copper steel automatic welding device and its course of work
CN110238490B (en) Main shaft front and back surface welding process based on welding general driving system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: A closed circular weld bead automatic electric welder

Effective date of registration: 20211129

Granted publication date: 20190514

Pledgee: Laishang Bank Co.,Ltd. Linyi Pingyi sub branch

Pledgor: SHANDONG MENWO TRANSMISSION CO.,LTD.

Registration number: Y2021980013466

PC01 Cancellation of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20230407

Granted publication date: 20190514

Pledgee: Laishang Bank Co.,Ltd. Linyi Pingyi sub branch

Pledgor: SHANDONG MENWO TRANSMISSION CO.,LTD.

Registration number: Y2021980013466