CN105965253B - A kind of gearbox mount bracket automatic Model Selection positions urgent frock and its technique - Google Patents

A kind of gearbox mount bracket automatic Model Selection positions urgent frock and its technique Download PDF

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Publication number
CN105965253B
CN105965253B CN201610348841.0A CN201610348841A CN105965253B CN 105965253 B CN105965253 B CN 105965253B CN 201610348841 A CN201610348841 A CN 201610348841A CN 105965253 B CN105965253 B CN 105965253B
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China
Prior art keywords
urgent
positioning
subframe
cylinder
frock
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CN201610348841.0A
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Chinese (zh)
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CN105965253A (en
Inventor
胡昌盛
杨予初
张基
兰东东
姜新康
唐春华
彭春伟
薛永龙
徐山
吕鹏
郑娟
王永芳
谢广科
徐腾
刘利滨
徐汉卿
段瑞
冷利强
仵延伟
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YANTAI HUIZHONG AUTOMOTIVE CHASSIS SYSTEMS CO Ltd
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YANTAI HUIZHONG AUTOMOTIVE CHASSIS SYSTEMS CO Ltd
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Priority to CN201610348841.0A priority Critical patent/CN105965253B/en
Publication of CN105965253A publication Critical patent/CN105965253A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P21/00Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P21/00Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
    • B23P21/004Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control the units passing two or more work-stations whilst being composed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P2700/00Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
    • B23P2700/50Other automobile vehicle parts, i.e. manufactured in assembly lines

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Specific Conveyance Elements (AREA)

Abstract

The present invention relates to mechanical field, specifically a kind of gearbox mount bracket automatic Model Selection positions urgent frock and its technique.Including workbench, conveyer belt, it is characterized in that:The rear side of the workbench is provided with urgent electric rifle, and the rear side of the urgent electric rifle is provided with fixed plate, is arranged with supporting plate outside the fixed plate, the lower section of the supporting plate is provided with urgent servomotor;The top of the urgent electric rifle is provided with positioning movable ram, the fixed pressure head of positioning is provided with above the urgent electric rifle on the left of positioning movable ram, lifting cylinder is provided with the top of the system frame on front side of positioning movable ram, the lower section of the lifting cylinder is provided with lifting platform.The present invention compared with the existing technology, realizes that a set of positioning tool positions all products, and product orientation realizes a set of origin reference location, eliminates existing 15 sets of frocks and the defects of 15 kinds of benchmark be present, positioning precision is greatly improved.

Description

A kind of gearbox mount bracket automatic Model Selection positions urgent frock and its technique
Technical field
The present invention relates to mechanical field, specifically a kind of gearbox mount bracket automatic Model Selection positions urgent frock And its technique.
Background technology
On subframe assembly line, currently used assembly method is total in the subframe that gearbox mount bracket is pre-installed Into when running to system station, the lifting of offline body is carried out to assembly, afterwards, support is carried out by mounting bracket positioning tool Position and urgent.But this method has the defects of obvious, due to using 15 fixtures in wire body altogether, so in the presence of 15 positioning works Dress, the uniformity of frock can not be kept;The frock of existing design structure can be produced when using for a long time and rocked, and cause locating effect It is deteriorated.
The content of the invention
The present invention is overcome the deficiencies in the prior art, and design one kind can keep frock uniformity, and after working long hours It will not produce and rock, the gearbox mount bracket automatic Model Selection for not influenceing locating effect is automatically positioned automatic urgent production system.
To achieve the above object, a kind of frock for realizing that the positioning of gearbox mount bracket automatic Model Selection is urgent is designed, including Workbench, conveyer belt, it is characterized in that:The top of the conveyer belt is provided with workbench, the workbench positioned at conveyer belt front and rear sides It is respectively equipped with a worktable support post at the corner of lower surface, the lower section in the middle part of the workbench is provided with fastening device, positioned at beating The top of workbench directly over tight device is provided with system frame, at the system frame four corners below of workbench front and rear sides A system frame support column is respectively equipped with, the rear side of workbench is provided with urgent electric rifle, and the rear side of the urgent electric rifle is provided with admittedly Fixed board, the fixed plate are arranged with supporting plate outside, and the lower section of the supporting plate is provided with urgent servomotor, set at the top of supporting plate There is urgent clamping cylinder;The top of the urgent electric rifle is provided with positioning movable ram, urgent on the left of positioning movable ram The fixed pressure head of positioning is provided with above electric rifle, lifting cylinder is provided with the top of the system frame on front side of positioning movable ram, it is described The lower section of lifting cylinder is provided with lifting platform, the lower section of the lifting platform be sequentially provided with from left to right positioning cylinder connecting rod and Moving cylinder is positioned, the positioning cylinder connecting rod is respectively arranged on the left side and the right side a positioning cylinder, positioned at positioning activity gas Lifting support is provided with below lifting platform on front side of cylinder.
It is respectively equipped with a clamp cylinder at the corner of the worktable upper surface, the clamp cylinder front and rear phase two-by-two It is right.
Fixed support is provided with below the conveyer belt, fixed support branch is respectively equipped with the corner of the fixed support bottom Dagger, the top of the fixed support support column abut fixed support lower surface, and the bottom of fixed support support column is fixed on ground On face.
The top of the worktable support post abuts workbench, and the bottom of worktable support post fixes on the ground.
The lower section of the fastening device is provided with fastening device base, and the fastening device base fixes on the ground.
The top of the system frame support column abuts system frame, and the bottom of system frame support column is fixed on ground On.
The lower section of the urgent servomotor is provided with electric machine support, and the electric machine support is located at the ground on rear side of workbench On.
The positioning movable ram is fixed on the right side of system frame, and the fixed pressure head of positioning is fixed on system frame Left side, identification proximity switch is additionally provided with the system frame above the fixed pressure head of positioning.
The positioning cylinder is fixed on the left and right sides of system frame.
A kind of technique realized gearbox mount bracket automatic Model Selection and position urgent frock, comprises the following steps:
(1)Fixture with subframe is transported to urgent station by conveyer belt, is clamped by clamp cylinder;
(2)Lifting cylinder drives subframe lifting, and in lifting process, subframe departs from fixture, and determines on subframe Position hole insertion product orientation pin, is accurately positioned, and after subframe lifting in place, positioning cylinder clamps subframe;
(3)System automatic identification sensor identification subframe is two drive subframes or 4 wheel driven subframe, and will be recognized Information transmission to control system;
(4)Position moving cylinder and drive positioning movable ram, and according to the information of system identification by subframe automatic running Until identification proximity switch position, positioning clamping is carried out to subframe by positioning movable ram and positioning fixed pressure head;
(5)Urgent servomotor drives urgent electric rifle to be run from station is prepared to subframe according to the information of system identification Urgent place is needed, urgent operation is carried out to subframe by urgent electric rifle;
(6)The urgent signal of system identification electricity rifle, and judge it is urgent whether complete, if do not complete urgent operation, repeat Perform the 5th step;If urgent completed already, urgent servomotor drives urgent electric rifle to retract preparation station, positions moving cylinder Retract, and perform the 7th step;
(7)Lifting cylinder puts down the fixture with subframe, and the positioning hole during putting down on subframe departs from product Alignment pin simultaneously inserts clamp locating pin, and after subframe is put down in place, positioning cylinder unclamps subframe and retracted;
(8)Clamp cylinder is retracted, and is signaled to control system, and the product of completion is let pass to next by conveyer belt Station.
The present invention compared with the existing technology, realizes that a set of positioning tool positions all products, positioning tool only has a set of, guarantor Demonstrate,prove the uniformity of frock;Cylinder clamping is used during positioning, produces enough clamping forces, keeps part complete during product is urgent Stable, long-term use is not rocked;Product orientation realizes a set of origin reference location, eliminates existing 15 sets frocks and the scarce of 15 kinds of benchmark be present Fall into, positioning precision is greatly improved;Product can realize and be automatically positioned that action is positioned manually in elimination, avoids thinking defect;From Urgent product is moved, eliminates personnel's action, it is possible to reduce operation number, it is cost-effective.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of the present invention.
Fig. 2 is the front view of the present invention.
Fig. 3 is the left view of the present invention.
Fig. 4 is the top view of the present invention.
Referring to Fig. 1~Fig. 4, wherein, 1 is lifting cylinder, and 2 be positioning cylinder, and 3 be identification proximity switch, and 4 be positioning activity Pressure head, 5 be the fixed pressure head of positioning, and 6 be clamp cylinder, and 7 be fastening device base, and 8 be urgent clamping cylinder, and 9 be urgent electric rifle, 10 be urgent servomotor, and 11 be positioning moving cylinder, and 12 be lifting support, and 13 be system frame, and 13 ' be system frame support Post, 14 be conveyer belt, and 15 be workbench, and 15 ' be worktable support post, and 16 be fixed support, and 16 ' be fixed support support column, 17 be fastening device, and 18 be electric machine support, and 19 be supporting plate, and 20 be fixed plate, and 21 be lifting platform, and 22 be positioning cylinder connection Bar.
Embodiment
The invention will now be described in further detail with reference to the accompanying drawings.
As shown in Figure 1 to 4, the top of the conveyer belt 14 is provided with workbench 15, positioned at the front and rear sides of conveyer belt 14 A worktable support post 15 ' is respectively equipped with the lower surface corner of workbench 15, the lower section at the middle part of workbench 15, which is provided with, to be beaten Tight device 17, the top of the workbench 15 directly over fastening device 17 is provided with system frame 13, before and after workbench 15 A system frame support column 13 ' is respectively equipped with the four corners below of system frame 13 of both sides, the rear side of workbench 15, which is provided with, to be beaten Tight electric rifle 9, the rear side of the urgent electric rifle 9 are provided with fixed plate 20, supporting plate 19, the support are arranged with outside the fixed plate 20 The lower section of plate 19 is provided with urgent servomotor 10, and the top of supporting plate 19 is provided with urgent clamping cylinder 8;The urgent electric rifle 9 Top is provided with positioning movable ram 4, and the fixed pressure head 5 of positioning is provided with above the urgent electric rifle 9 in the left side of positioning movable ram 4, Lifting cylinder 1 is provided with positioned at the top of system frame 13 of the front side of positioning movable ram 4, the lower section of the lifting cylinder 1 is provided with lift Peaceful 21, the lower section of the lifting platform 21 is sequentially provided with positioning cylinder connecting rod 22 and positioning moving cylinder from left to right 11, the positioning cylinder connecting rod 22 is respectively arranged on the left side and the right side a positioning cylinder 2, positioned at the front side of positioning moving cylinder 11 The lower section of lifting platform 21 be provided with lifting support 12.
A clamp cylinder 6 is respectively equipped with the corner of the upper surface of workbench 15, the clamp cylinder 6 is front and rear two-by-two Relatively.
The lower section of conveyer belt 14 is provided with fixed support 16, and fixation is respectively equipped with the corner of the bottom of fixed support 16 Support support column 16 ', the top of the fixed support support column 16 ' abut the lower surface of fixed support 16, fixed support support column 16 ' bottom fixes on the ground.
The top of the worktable support post 15 ' abuts workbench 15, and the bottom of worktable support post 15 ' is fixed on ground On.
The lower section of the fastening device 17 is provided with fastening device base 7, and the fastening device base 7 fixes on the ground.
The top of the system frame support column 13 ' abuts system frame 13, and the bottom of system frame support column 13 ' is fixed On the ground.
The lower section of the urgent servomotor 10 is provided with electric machine support 18, and the electric machine support 18 is located at the rear side of workbench 15 Ground on.
The positioning movable ram 4 is fixed on the right side of system frame 13, and the fixed pressure head 5 of positioning is fixed on system branch The left side of frame 13, identification proximity switch 3 is additionally provided with the system frame 13 above the fixed pressure head 5 of positioning.
The positioning cylinder 2 is fixed on the left and right sides of system frame 13.
A kind of technique realized gearbox mount bracket automatic Model Selection and position urgent frock, comprises the following steps:
(1)Fixture with subframe is transported to urgent station by conveyer belt, is clamped by clamp cylinder;
(2)Lifting cylinder drives subframe lifting, and in lifting process, subframe departs from fixture, and determines on subframe Product orientation pin on position hole insertion subframe, is accurately positioned, and after subframe lifting in place, positioning cylinder is by subframe Clamp;
(3)System identification proximity switch identification subframe is two drive subframes or 4 wheel driven subframe, and will be recognized Information transmission is to control system;
(4)Position moving cylinder and drive positioning movable ram, and according to the information of system identification by subframe automatic running Until identification proximity switch position, positioning clamping is carried out to subframe by positioning movable ram and positioning fixed pressure head;
(5)Urgent servomotor drives urgent electric rifle to be run from station is prepared to subframe according to the information of system identification Urgent place is needed, urgent operation is carried out to subframe by urgent electric rifle;
(6)The urgent signal of system identification electricity rifle, and judge it is urgent whether complete, if do not complete urgent operation, repeat Perform the 5th step;If urgent completed already, urgent servomotor drives urgent electric rifle to retract preparation station, positions moving cylinder Retract, and perform the 7th step;
(7)Lifting cylinder puts down the fixture with subframe, and the positioning hole during putting down on subframe departs from product Alignment pin simultaneously inserts clamp locating pin, and after subframe is put down in place, positioning cylinder unclamps subframe and retracted;
(8)Clamp cylinder is retracted, and is signaled to control system, and the product of completion is let pass to next by conveyer belt Station.
Embodiment:
Subframe is provided with some positioning holes, and fixture is provided with the alignment pin matched with positioning hole, in use, fixture passes through Alignment pin and positioning hole clamp subframe.
The fixture with subframe is transported on workbench 15 by conveyer belt 14, and by clamp cylinder 6 by clamp, Lifting platform 21 is driven to rise by lifting cylinder 1 so that subframe is lifted, during subframe is lifted, on subframe Positioning hole departs from the alignment pin on fixture, and after the positioning hole on subframe departs from alignment pin, subframe is inserted in positioning hole On product orientation pin so that system can be accurately positioned subframe, after subframe lifting in place, by positioning cylinder 2 by pair Vehicle frame clamps.
By identifying that proximity switch identifies that subframe to be processed is two drive subframes or 4 wheel driven subframe, and will identify Information transmission to control system;According to the information that control system receives by subframe run to two drive subframes be processed as or 4 wheel driven subframe is processed as, from positioning moving cylinder 11 drive positioning movable ram 4 and with the fixed pressure head 5 of positioning to secondary car Frame positioning clamps.The information that urgent servomotor 10 is subject to according to control system drives urgent electric rifle 9 to be moved to from beam worker position Urgent station, urgent operation is carried out to subframe.
Due to needing to carry out urgent operation to multiple places, so control system needs to identify the urgent signal of electric rifle 9, and sentence Whether the urgent electric rifle 9 that breaks completes whole urgent operations, and next urgent point is moved to if not completing, urgent if completing to watch Taking motor 10 drives urgent electric rifle 9 to retract preparation station, and positioning moving cylinder 11 is retracted, and lifting cylinder 1 puts down subframe, puts Positioning hole during lower on subframe departs from the product orientation pin on subframe, and inserts clamp locating pin, and subframe is put down After in place, positioning cylinder 2 unclamps subframe and retracted.
Last clamp cylinder 6 is retracted, and is sent to control system and completed processing signal, will complete to process by conveyer belt 14 Product let pass to next station and continue to process.

Claims (10)

1. a kind of urgent frock of gearbox mount bracket automatic Model Selection positioning, including workbench, conveyer belt, it is characterized in that:Institute State conveyer belt(14)Top be provided with workbench(15), positioned at conveyer belt(14)The workbench of front and rear sides(15)Lower surface corner Place is respectively equipped with a worktable support post(15’), the workbench(15)The lower section at middle part is provided with fastening device(17), it is located at Fastening device(17)The workbench of surface(15)Top be provided with system frame(13), positioned at workbench(15)Front and rear sides System frame(13)A system frame support column is respectively equipped with four corners below(13’), workbench(15)Rear side be provided with beat Tight electric rifle(9), the urgent electric rifle(9)Rear side be provided with fixed plate(20), the fixed plate(20)It is arranged with supporting plate outside (19), the supporting plate(19)Lower section be provided with urgent servomotor(10), supporting plate(19)Top be provided with urgent clamping gas Cylinder(8);The urgent electric rifle(9)Top be provided with positioning movable ram(4), positioned at positioning movable ram(4)Left side it is urgent Electric rifle(9)Top is provided with the fixed pressure head of positioning(5), positioned at positioning movable ram(4)The system frame of front side(13)Top is provided with Lifting cylinder(1), the lifting cylinder(1)Lower section be provided with lifting platform(21), the lifting platform(21)Lower section from a left side Positioning cylinder connecting rod is sequentially provided with to the right side(22)With positioning moving cylinder(11), the positioning cylinder connecting rod(22)Left and right Both sides are respectively equipped with a positioning cylinder(2), positioned at positioning moving cylinder(11)The lifting platform of front side(21)Lower section is provided with lift Ascending branch frame(12).
2. a kind of gearbox mount bracket automatic Model Selection as claimed in claim 1 positions urgent frock, it is characterized in that:It is described Workbench(15)A clamp cylinder is respectively equipped with the corner of upper surface(6), the clamp cylinder(6)It is front and rear relative two-by-two.
3. a kind of gearbox mount bracket automatic Model Selection as claimed in claim 1 positions urgent frock, it is characterized in that:It is described Conveyer belt(14)Lower section is provided with fixed support(16), the fixed support(16)Fixed support branch is respectively equipped with the corner of bottom Dagger(16’), the fixed support support column(16’)Top abut fixed support(16)Lower surface, fixed support support column (16’)Bottom fix on the ground.
4. a kind of gearbox mount bracket automatic Model Selection as claimed in claim 1 positions urgent frock, it is characterized in that:It is described Worktable support post(15’)Top abut workbench(15), worktable support post(15’)Bottom fix on the ground.
5. a kind of gearbox mount bracket automatic Model Selection as claimed in claim 1 positions urgent frock, it is characterized in that:It is described Fastening device(17)Lower section be provided with fastening device base(7), the fastening device base(7)Fix on the ground.
6. a kind of gearbox mount bracket automatic Model Selection as claimed in claim 1 positions urgent frock, it is characterized in that:It is described System frame support column(13’)Top abut system frame(13), system frame support column(13’)Bottom be fixed on ground On.
7. a kind of gearbox mount bracket automatic Model Selection as claimed in claim 1 positions urgent frock, it is characterized in that:It is described Urgent servomotor(10)Lower section be provided with electric machine support(18), the electric machine support(18)It is located at workbench(15)The ground of rear side On face.
8. a kind of gearbox mount bracket automatic Model Selection as claimed in claim 1 positions urgent frock, it is characterized in that:It is described Position movable ram(4)It is fixed on system frame(13)Right side, the fixed pressure head of positioning(5)It is fixed on system frame(13) Left side, positioned at the fixed pressure head of positioning(5)The system frame of top(13)On be additionally provided with identification proximity switch(3).
9. a kind of gearbox mount bracket automatic Model Selection as claimed in claim 1 positions urgent frock, it is characterized in that:It is described Positioning cylinder(2)It is fixed on system frame(13)The left and right sides on.
10. a kind of technique realized gearbox mount bracket automatic Model Selection and position urgent frock, comprises the following steps:
(1)Fixture with subframe is transported to urgent station by conveyer belt, is clamped by clamp cylinder;
(2)Lifting cylinder drives subframe lifting, and in lifting process, subframe departs from fixture, and the positioning hole on subframe The product orientation pin inserted on subframe, is accurately positioned, and after subframe lifting in place, positioning cylinder presss from both sides subframe Tightly;
(3)System identification proximity switch identification subframe is two drive subframes or 4 wheel driven subframe, and the information that will be recognized It is delivered to control system;
(4)Position moving cylinder and drive positioning movable ram, and according to the information of system identification by subframe automatic running until Proximity switch position is identified, positioning clamping is carried out to subframe by positioning movable ram and positioning fixed pressure head;
(5)Urgent servomotor drives urgent electric rifle to be run from station is prepared to needs on subframe according to the information of system identification Urgent place, urgent operation is carried out to subframe by urgent electric rifle;
(6)The urgent signal of system identification electricity rifle, and judge it is urgent whether complete, if do not complete urgent operation, repeat 5th step;If urgent completed already, urgent servomotor drives urgent electric rifle to retract preparation station, and positioning moving cylinder moves back Return, and perform the 7th step;
(7)Lifting cylinder puts down subframe, and the positioning hole during putting down on subframe departs from product orientation pin and inserts folder Has alignment pin, after subframe is put down in place, positioning cylinder unclamps subframe and retracted;
(8)Clamp cylinder is retracted, and is signaled to control system, and the product of completion is let pass to next work by conveyer belt Position.
CN201610348841.0A 2016-05-24 2016-05-24 A kind of gearbox mount bracket automatic Model Selection positions urgent frock and its technique Active CN105965253B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108296747B (en) * 2018-03-26 2023-11-21 广东鸿图南通压铸有限公司 Application method of multi-station assembly and integration special machine for automobile bracket
CN109277825B (en) * 2018-11-28 2023-11-10 济南大学 Novel gearbox assembly device

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JPH06216589A (en) * 1993-01-18 1994-08-05 Matsushita Electric Ind Co Ltd Insertion device for electronic component
CN202655891U (en) * 2012-07-23 2013-01-09 吴江市金澜机械制造有限公司 Steel ball feeding device
CN104589039A (en) * 2015-01-14 2015-05-06 宁波方太厨具有限公司 Combined assembly machine capable of automatically tightening gas nozzle and automatically detecting airtightness
CN204430741U (en) * 2015-02-02 2015-07-01 乐清市博骏自动化有限公司 The urgent testing agency of screw
CN205057497U (en) * 2015-10-30 2016-03-02 江苏比微曼智能科技有限公司 Treadmill weld assembly kludge
CN205764846U (en) * 2016-05-24 2016-12-07 烟台汇众汽车底盘***有限公司 A kind of gearbox mount bracket automatic Model Selection is automatically positioned and the most urgent frock

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06216589A (en) * 1993-01-18 1994-08-05 Matsushita Electric Ind Co Ltd Insertion device for electronic component
CN202655891U (en) * 2012-07-23 2013-01-09 吴江市金澜机械制造有限公司 Steel ball feeding device
CN104589039A (en) * 2015-01-14 2015-05-06 宁波方太厨具有限公司 Combined assembly machine capable of automatically tightening gas nozzle and automatically detecting airtightness
CN204430741U (en) * 2015-02-02 2015-07-01 乐清市博骏自动化有限公司 The urgent testing agency of screw
CN205057497U (en) * 2015-10-30 2016-03-02 江苏比微曼智能科技有限公司 Treadmill weld assembly kludge
CN205764846U (en) * 2016-05-24 2016-12-07 烟台汇众汽车底盘***有限公司 A kind of gearbox mount bracket automatic Model Selection is automatically positioned and the most urgent frock

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Inventor after: Hu Changsheng

Inventor after: Lv Peng

Inventor after: Zheng Juan

Inventor after: Wang Yongfang

Inventor after: Xie Guangke

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Inventor after: Liu Libin

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Inventor after: Leng Liqiang

Inventor after: Wu Yanwei

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