CN104741904A - Spring rotating machine for automatically and accurately installing spring onto mechanical scale component - Google Patents
Spring rotating machine for automatically and accurately installing spring onto mechanical scale component Download PDFInfo
- Publication number
- CN104741904A CN104741904A CN201510144855.6A CN201510144855A CN104741904A CN 104741904 A CN104741904 A CN 104741904A CN 201510144855 A CN201510144855 A CN 201510144855A CN 104741904 A CN104741904 A CN 104741904A
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- spring
- workbench
- scale component
- mechanical scale
- gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/048—Springs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wire Processing (AREA)
- Transmission Devices (AREA)
Abstract
The invention provides a spring rotating machine for automatically and accurately installing a spring onto a mechanical scale component. The spring rotating machine for automatically and accurately installing the spring onto the mechanical scale component comprises a lower support and a side support, wherein the lower support is provided with a control box, the upper end face of the lower support is provided with a working table, the upper end face of the working table is provided with an upper support, the upper support is provided with a pushing device perpendicular to the working table, the working table is provided with a feeding device penetrating through the bottom of the upper support, the working table is further provided with a rotating installation driving device, the rotating installation driving device drives the pushing device to install the spring in a rotating mode, one side of the lower support is provided with the side support, and the upper end face of the side support is provided with a vibration conveying device for conveying the spring to the lower end of the pushing device. By means of the spring rotating machine for automatically and accurately installing the spring onto the mechanical scale component, the automatic and accurate installation of the spring is achieved, the assembling quality is high, the production efficiency is high, the labor force is saved, the potential safety hazard caused by misoperation of workers or machinery action failure is effectively avoided, and the damage to the spring in the assembling process is eliminated.
Description
Technical field
The invention belongs to mechanical scale manufacturing technology field, be specifically related to a kind ofly revolve spring machine for automatic precisely mounting spring to mechanical scale component.
Background technology
The production of mechanical scale belongs to labor-intensive traditional industries, and spring is as the critical component of mechanical scale, and the quality of assembling is directly connected to the weighing precision of mechanical scale.At present, nearly all mechanical scale manufacturer relies on manual assembly, mainly there is following problem: one is the shortage of skilled worker, because mechanical scale industry belongs to non-popular industry, skilled and the workman possessing certain technology mainly relies on factory to cultivate voluntarily, and the streaming potential of personnel must cause the productivity ratio of factory to reduce even to stop production; Two is snap in by force on spring(-supported) mount after traditional spring assembling mainly utilizes point pincers to wait instrument to insert spring gap by workman, this assembling mode not only requires that workman has skilled gimmick, and extremely requires great effort, and labour intensity is large, workman is very easily tired, causes inefficiency; Three is spring differences due to individuality of manual assembly, the number of active coils that spring snaps in and rely on the method for range estimation adjustment to there is the difference that cannot eliminate, and can not realize assembling comparatively accurately; Four be due to workman assemble time, utilize instrument to snap in spring by force, and spring possesses certain elastic physical property and intensity, very easily occurs the phenomenon such as skidding and cause workman's hand injured; Five is that the artificial point pincers that utilize snap in the operation of spring gap, and cause spring that certain physical deformation occurs, this is objectively defining the damage to spring, and then affects its service behaviour.Therefore be necessary to propose to improve.
Summary of the invention
The technical problem that the present invention solves: provide a kind of and revolve spring machine for automatic precisely mounting spring to mechanical scale component, by pay-off, component is located, spring is transported to the termination of track by vibrations conveying device, pusher is in the spring groove of spring-advance component, then spinning drive unit drive flower pattern fork shaft to rotate and along with swivel nut provide precisely descending, spring is screwed in the spring groove of component accurately, achieve and spring is installed in component automatically accurately, assembly quality is high, alleviate the labour intensity of workman, production efficiency is high, low cost of manufacture.
The technical solution used in the present invention: revolve spring machine to mechanical scale component for automatic precisely mounting spring, comprise lower carriage and side stand, described lower carriage is provided with control cabinet, the upper surface of described lower carriage is provided with workbench, the upper surface of described workbench is provided with upper bracket, described upper bracket is provided with the pusher perpendicular to workbench, described workbench is provided with pay-off and pay-off passes bottom upper bracket, described workbench is also provided with spinning drive unit, described spinning drive unit drives pusher spinning spring, described lower carriage side is provided with side stand, the upper surface of described side stand is provided with vibrations conveying device spring being transported to pusher lower end.
Wherein, described pusher comprises propelling movement cylinder, swivel nut and flower pattern fork shaft, and described propelling movement cylinder is fixed on the top of upper bracket, and the piston rod of described propelling movement cylinder is connected with swivel nut, the lower end of described swivel nut is threaded connection flower pattern fork shaft, and described flower pattern fork shaft is inserted in the middle disc flower hole of gear II.
The lower end of described swivel nut is provided with flower pattern fork shaft, and described flower pattern fork shaft is provided with gear II.
Further, described pay-off comprises feeding cylinder and locating piece, described feeding cylinder is fixed on workbench side, slideway on described locating piece and workbench is adaptive, the piston rod of described feeding cylinder is connected with locating piece, the flexible locating piece that pulls of the piston rod of described feeding cylinder is along slideway horizontal slip, and described locating piece is provided with the locating slot placing component.
Further, described spinning drive unit comprises working cylinder, rack and pinion I, described workbench is provided with working cylinder support, on described working cylinder support, level is provided with working cylinder, the piston rod of described working cylinder is fixedly connected with tooth bar one end, the telescopic drive tooth bar of described working cylinder piston rod does horizontal rectilinear motion, gear I is provided with in the middle part of described upper bracket, described tooth bar is by rotating with gear I mesh driving gear I, and described gear I 9 drives the flower pattern fork shaft 7 be inserted on wherein disc flower hole to rotate by engaging with gear II 26.
Further, described vibrations conveying device comprises vibrating disc, vibrations bridge and guide rail, described side stand upper surface is provided with vibrating disc, described workbench upper surface is provided with bridge bracket and rail brackets, the upper surface of described bridge bracket is provided with vibrations bridge, and the upper surface of described rail brackets is provided with guide rail, and the port of described vibrating disc is connected with vibrations bridge one end, the described vibrations bridge other end is connected with guide rail one end, and the described guide rail other end stretches into the below of flower pattern fork shaft.
Further, described upper bracket upper surface is fixed with switch bracket, described switch bracket is provided with duplex photoelectric detection switch, described duplex photoelectric detection switch is electrically connected with control cabinet, described workbench is provided with photoelectric detection switch I, described upper bracket side is provided with photoelectric detection switch II, and described photoelectric detection switch I and photoelectric detection switch II are all electrically connected with control cabinet.
Further, described upper bracket is provided with buffer.
Further, described swivel nut side is provided with contact.
The present invention's beneficial effect compared with prior art:
1, be combined with each other between the parts such as gear, tooth bar, swivel nut and flower shape fork shaft, and by cylinders providing power, be installed on accurately in component by spring, achieving spring assembles automatically accurately;
2, feeding cylinder is adopted to pull the drawer type material setting structure of locating piece, make putting into or take out and being all placed in outside operating mechanism by slip of component, and electrical equipment of the present invention all adopts the safe voltage of direct current 24V, operative is effectively avoided to slip up or the mechanical action potential safety hazard caused such as malfunctioning;
3, the present invention replaces workman's handwork to complete the assembling of spring, and workman can operate without the need to technical foundation, realizes operation popular, has liberated manpower greatly, and simple to operate, production efficiency is high;
4, utilize the accurate transmission of the frame for movement such as rotating driving device, pusher and the Precision measurement of optical detection device, the effective location accuracy achieving spring screw-in, alleviates the labour intensity of rear operation adjustment;
5, the present invention adopts the spiral principle of spring self, and transmit power with the swivel nut matched with it, realization screw-in is synchronous with force, overcomes utilization point and clamps the spring physical deformation snapping in the working methods such as spring and cause, eliminate in assembling process defects such as the damages that spring causes.
Accompanying drawing explanation
Fig. 1 is perspective view one of the present invention;
Fig. 2 is perspective view two of the present invention;
Fig. 3 is front view of the present invention;
Fig. 4 is top view of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing 1-4, a kind of embodiment of the present invention is described.
Spring machine is revolved to mechanical scale component for automatic precisely mounting spring, comprise lower carriage 20 and side stand 21, described lower carriage 20 is provided with control cabinet 17, the upper surface of described lower carriage 20 is provided with workbench 18, the upper surface of described workbench 18 is provided with upper bracket 19, described upper bracket 19 is provided with the pusher perpendicular to workbench 18, concrete, described pusher comprises propelling movement cylinder 5, swivel nut 6 and flower pattern fork shaft 7, described propelling movement cylinder 5 is fixed on the top of upper bracket 19, the piston rod of described propelling movement cylinder 5 is connected with swivel nut 6, the lower end of described swivel nut 6 is threaded connection flower pattern fork shaft 7, the flexible drive flower pattern fork shaft 7 pushing the piston rod of cylinder 5 pushes spring, swivel nut 6 is adopted to provide downward storke accurately, achieve the screw-in of spring and the synchronous of force, described flower pattern fork shaft 7 is inserted in the middle disc flower hole of gear II 26, described workbench 18 is provided with pay-off and pay-off passes bottom upper bracket 19, concrete, described pay-off comprises feeding cylinder 13 and locating piece 11, described feeding cylinder 13 is fixed on workbench 18 side, described locating piece 11 is adaptive with the slideway 24 on workbench 18, the piston rod of described feeding cylinder 13 is connected with locating piece 11, the flexible locating piece 11 that pulls of the piston rod of described feeding cylinder 13 is along slideway 24 horizontal slip, described locating piece 11 is provided with the locating slot 25 placing component 12, when locating piece 11 slides into outside upper bracket 19, component 12 is placed in the locating slot 25 of locating piece 11 by workman, operative is avoided to slip up or the mechanical action potential safety hazard caused such as malfunctioning, described workbench 18 is also provided with spinning drive unit, described spinning drive unit drives pusher spinning spring, concrete, described spinning drive unit comprises working cylinder 16, tooth bar 3 and gear I 9, described workbench 18 is provided with working cylinder support 22, on described working cylinder support 22, level is provided with working cylinder 16, the piston rod of described working cylinder 16 is fixedly connected with tooth bar 3 one end, the telescopic drive tooth bar 3 of described working cylinder 16 piston rod does horizontal rectilinear motion, gear I 9 is provided with in the middle part of described upper bracket 19, described tooth bar 3 is by rotating with gear I 9 mesh driving gear I 9, described gear I 9 drives the flower pattern fork shaft 7 be inserted on wherein disc flower hole to rotate by engaging with gear II 26, spring screws in locating slot 25 by downward storke that the rotation of flower pattern fork shaft 7 provides in conjunction with swivel nut 6 accurately, described lower carriage 20 side is provided with side stand 21, the upper surface of described side stand 21 is provided with vibrations conveying device spring being transported to pusher lower end, concrete, described vibrations conveying device comprises vibrating disc 1, vibrations bridge 2 and guide rail 4, described side stand 21 upper surface is provided with the vibrating disc 1 arranged in certain sequence by spring, described workbench 18 upper surface is provided with bridge bracket 27 and rail brackets 28, the upper surface of described bridge bracket 27 is provided with vibrations bridge 2, the upper surface of described rail brackets 28 is provided with guide rail 4, the port of described vibrating disc 1 is connected with vibrations bridge 2 one end, described vibrations bridge 2 other end is connected with guide rail 4 one end, described guide rail 4 other end stretches into the below of flower pattern fork shaft 7.
Described upper bracket 19 upper surface is fixed with switch bracket 23, described switch bracket 23 is provided with duplex photoelectric detection switch 10, described duplex photoelectric detection switch 10 is electrically connected with control cabinet 17, described workbench 18 is provided with photoelectric detection switch I 14, described upper bracket 19 side is provided with photoelectric detection switch II 15, described photoelectric detection switch I 14 and photoelectric detection switch II 15 are all electrically connected with control cabinet 17, described upper bracket 19 is provided with buffer 8, buffer 8 is for carrying out position precise positioning to spring, guarantee that the number of turns that spring screws in locating slot 25 meets the requirements, described swivel nut 6 side is provided with contact 29, contact 29 is connected along with the upstream or downstream of swivel nut 6 and duplex photoelectric detection switch 10, by electrical signal transfer to control cabinet 17, thus startup interlock circuit.
During work, starting shock conveying device, spring is shaken by vibrating disc 1 and arranges in certain sequence, and is transported to one end of guide rail 4 through vibrations bridge 2 and guide rail 4, simultaneously, locating piece 11 is pushed to the outside of upper bracket 19 by feeding cylinder 13, be the reset condition of start, component 12 is positioned in the locating slot 25 of locating piece 11 by operating personnel, switch on power, control cabinet 17 works, locating piece 11 level is drawn to below flower pattern fork shaft 7 by feeding cylinder 13, now, photoelectric detection switch I 14 is connected and after the component 12 detecting on locating piece 11 is in tram, by electrical signal transfer to control cabinet 17, control cabinet 17 drives propelling movement cylinder 5 to work by interlock circuit, propelling movement cylinder 5 promotes flower pattern fork shaft 7 by swivel nut 6 and moves, flower pattern fork shaft 7 will be placed in the spring groove of the spring-advance component 12 of guide rail 4 end, now, contact 29 is connected along with the lower contact of the descending of swivel nut 6 with duplex photoelectric detection switch 10, after duplex photoelectric detection switch 10 detects that pushing cylinder 5 goes downwards to assigned address, output signal to control cabinet 17, control cabinet 17 drives working cylinder 16 to work by interlock circuit, the band carry-over bar 3 that stretches out of working cylinder 16 does rectilinear motion, tooth bar 3 is rotated by gear I 9 driven wheel II 26, gear II 26 drives flower pattern fork shaft 7 to rotate and spring screws in the spring groove of component 12 by the accurate downward storke provided along with swivel nut 6, and carry out position precise positioning by buffer 8, ensure that the number of turns that spring screws in meets the requirements, wherein, after working cylinder 16 reaches certain position, photoelectric detection switch II 15 is connected and after detecting that spring spinning puts in place, output signal to control cabinet 17, control cabinet 17 is driven by interlock circuit and promotes cylinder 5 action, promote cylinder 5 retract and pull flower pattern fork shaft 7 to depart from spring by swivel nut 6, now, contact 29 is connected along with the upper contact head of the up of swivel nut 6 with duplex photoelectric detection switch 10, after duplex photoelectric detection switch 10 detects that pushing cylinder 5 retract action completes, output signal to control cabinet 17, control cabinet 17 drives working cylinder 16 action by interlock circuit, working cylinder 16 is retracted and is pulled tooth bar 3, tooth bar 3 is rotated by gear I 9 and gear II 26 and drives flower pattern fork shaft 7 to reset, simultaneously, feeding cylinder 13 stretches out and promotes locating piece 11 to be taken out of the component 12 installing spring, so far, complete a work period.
The present invention passes through cylinders providing power, and by be combineding with each other between component of machine, achieve spring automatically to assemble accurately, assembly quality is high, production efficiency is high, save labour, effectively avoid operative to slip up or the mechanical action potential safety hazard caused such as malfunctioning, eliminate in assembling process the damage that spring causes.
Above-described embodiment, just preferred embodiment of the present invention, is not used for limiting the scope of the present invention, therefore all equivalence changes done with content described in the claims in the present invention, all should be included within the claims in the present invention scope.
Claims (8)
1. revolve spring machine for automatic precisely mounting spring to mechanical scale component, it is characterized in that: comprise lower carriage (20) and side stand (21), described lower carriage (20) is provided with control cabinet (17), the upper surface of described lower carriage (20) is provided with workbench (18), the upper surface of described workbench (18) is provided with upper bracket (19), described upper bracket (19) is provided with the pusher perpendicular to workbench (18), described workbench (18) is provided with pay-off and pay-off passes from upper bracket (19) bottom, (18) are also provided with spinning drive unit to described workbench, described spinning drive unit drives pusher spinning spring, described lower carriage (20) side is provided with side stand (21), the upper surface of described side stand (21) is provided with vibrations conveying device spring being transported to pusher lower end.
2. according to claim 1ly revolve spring machine for automatic precisely mounting spring to mechanical scale component, it is characterized in that: described pusher comprises propelling movement cylinder (5), swivel nut (6) and flower pattern fork shaft (7), described propelling movement cylinder (5) is fixed on the top of upper bracket (19), the piston rod of described propelling movement cylinder (5) is connected with swivel nut (6), the lower end of described swivel nut (6) is threaded connection flower pattern fork shaft (7), and described flower pattern fork shaft (7) is inserted in the middle disc flower hole of gear II (26).
3. according to claim 1 and 2ly revolve spring machine for automatic precisely mounting spring to mechanical scale component, it is characterized in that: described pay-off comprises feeding cylinder (13) and locating piece (11), described feeding cylinder (13) is fixed on workbench (18) side, described locating piece (11) is adaptive with the slideway (24) on workbench (18), the piston rod of described feeding cylinder (13) is connected with locating piece (11), the flexible locating piece (11) that pulls of the piston rod of described feeding cylinder (13) is along slideway (24) horizontal slip, described locating piece (11) is provided with the locating slot (25) placing component (12).
4. according to claim 3ly revolve spring machine for automatic precisely mounting spring to mechanical scale component, it is characterized in that: described spinning drive unit comprises working cylinder (16), tooth bar (3) and gear I (9), described workbench (18) is provided with working cylinder support (22), the upper level of described working cylinder support (22) is provided with working cylinder (16), the piston rod of described working cylinder (16) is fixedly connected with tooth bar (3) one end, the telescopic drive tooth bar (3) of described working cylinder (16) piston rod does horizontal rectilinear motion, described upper bracket (19) middle part is provided with gear I (9), described tooth bar (3) is by rotating with gear I (9) mesh driving gear I (9), described gear I (9) drives the flower pattern fork shaft (7) be inserted on wherein disc flower hole to rotate by engaging with gear II (26).
5. according to claim 4ly revolve spring machine for automatic precisely mounting spring to mechanical scale component, it is characterized in that: described vibrations conveying device comprises vibrating disc (1), vibrations bridge (2) and guide rail (4), described side stand (21) upper surface is provided with vibrating disc (1), described workbench (18) upper surface is provided with bridge bracket (27) and rail brackets (28), the upper surface of described bridge bracket (27) is provided with vibrations bridge (2), the upper surface of described rail brackets (28) is provided with guide rail (4), the port of described vibrating disc (1) is connected with vibrations bridge (2) one end, described vibrations bridge (2) other end is connected with guide rail (4) one end, described guide rail (4) other end stretches into the below of flower pattern fork shaft (7).
6. according to claim 5ly revolve spring machine for automatic precisely mounting spring to mechanical scale component, it is characterized in that: described upper bracket (19) upper surface is fixed with switch bracket (23), described switch bracket (23) is provided with duplex photoelectric detection switch (10), described duplex photoelectric detection switch (10) is electrically connected with control cabinet (17), described workbench (18) is provided with photoelectric detection switch I (14), described upper bracket (19) side is provided with photoelectric detection switch II (15), described photoelectric detection switch I (14) and photoelectric detection switch II (15) are all electrically connected with control cabinet (17).
7. according to claim 6ly revolve spring machine for automatic precisely mounting spring to mechanical scale component, it is characterized in that: described upper bracket (19) is provided with buffer (8).
8. according to claim 7ly revolve spring machine for automatic precisely mounting spring to mechanical scale component, it is characterized in that: described swivel nut (6) side is provided with contact (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510144855.6A CN104741904B (en) | 2015-03-30 | 2015-03-30 | Spring rotating machine for automatically and accurately installing spring onto mechanical scale component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510144855.6A CN104741904B (en) | 2015-03-30 | 2015-03-30 | Spring rotating machine for automatically and accurately installing spring onto mechanical scale component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104741904A true CN104741904A (en) | 2015-07-01 |
| CN104741904B CN104741904B (en) | 2017-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510144855.6A Expired - Fee Related CN104741904B (en) | 2015-03-30 | 2015-03-30 | Spring rotating machine for automatically and accurately installing spring onto mechanical scale component |
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| Country | Link |
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| CN (1) | CN104741904B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109226440A (en) * | 2018-09-11 | 2019-01-18 | 石家庄金丰专用车有限公司 | A kind of trailer special-purpose steel cross cutting off line |
| CN110405468A (en) * | 2019-07-29 | 2019-11-05 | 浙江理工大学 | Insulating base wire harness assembly ignition rotor spring automatic assembling machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4959897A (en) * | 1988-07-21 | 1990-10-02 | Fuji Photo Film Co., Ltd. | Torsion spring mounting apparatus |
| CN203109569U (en) * | 2013-03-05 | 2013-08-07 | 慈溪市宏晟机械设备有限公司 | Assembling machine of support and triangular clamping spring |
| CN203282158U (en) * | 2013-06-07 | 2013-11-13 | 北京德尔福万源发动机管理系统有限公司 | Spring screwing installation device |
| CN203712204U (en) * | 2013-12-16 | 2014-07-16 | 诸暨市润拓机械自动化科技有限公司 | Equipment for feeding springs one by one |
| CN203751663U (en) * | 2014-02-28 | 2014-08-06 | 温岭市金悦自动化设备有限公司 | Spring installing device |
| CN204130392U (en) * | 2014-08-26 | 2015-01-28 | 东莞市益诚自动化设备有限公司 | Spring feeding assembling mechanism |
| CN104384904A (en) * | 2014-11-04 | 2015-03-04 | 浙江大学台州研究院 | Clamp spring automatic assembling machine |
| CN204545873U (en) * | 2015-03-30 | 2015-08-12 | 咸阳衡源家居用品有限公司 | Spring machine is revolved to mechanical scale component for automatic precisely mounting spring |
-
2015
- 2015-03-30 CN CN201510144855.6A patent/CN104741904B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4959897A (en) * | 1988-07-21 | 1990-10-02 | Fuji Photo Film Co., Ltd. | Torsion spring mounting apparatus |
| CN203109569U (en) * | 2013-03-05 | 2013-08-07 | 慈溪市宏晟机械设备有限公司 | Assembling machine of support and triangular clamping spring |
| CN203282158U (en) * | 2013-06-07 | 2013-11-13 | 北京德尔福万源发动机管理系统有限公司 | Spring screwing installation device |
| CN203712204U (en) * | 2013-12-16 | 2014-07-16 | 诸暨市润拓机械自动化科技有限公司 | Equipment for feeding springs one by one |
| CN203751663U (en) * | 2014-02-28 | 2014-08-06 | 温岭市金悦自动化设备有限公司 | Spring installing device |
| CN204130392U (en) * | 2014-08-26 | 2015-01-28 | 东莞市益诚自动化设备有限公司 | Spring feeding assembling mechanism |
| CN104384904A (en) * | 2014-11-04 | 2015-03-04 | 浙江大学台州研究院 | Clamp spring automatic assembling machine |
| CN204545873U (en) * | 2015-03-30 | 2015-08-12 | 咸阳衡源家居用品有限公司 | Spring machine is revolved to mechanical scale component for automatic precisely mounting spring |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109226440A (en) * | 2018-09-11 | 2019-01-18 | 石家庄金丰专用车有限公司 | A kind of trailer special-purpose steel cross cutting off line |
| CN110405468A (en) * | 2019-07-29 | 2019-11-05 | 浙江理工大学 | Insulating base wire harness assembly ignition rotor spring automatic assembling machine |
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| CN104741904B (en) | 2017-01-18 |
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