CN103978368A - Engine oil pump shell steel ball and plug pressing method and controller - Google Patents
Engine oil pump shell steel ball and plug pressing method and controller Download PDFInfo
- Publication number
- CN103978368A CN103978368A CN201410241696.7A CN201410241696A CN103978368A CN 103978368 A CN103978368 A CN 103978368A CN 201410241696 A CN201410241696 A CN 201410241696A CN 103978368 A CN103978368 A CN 103978368A
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- steel ball
- oil
- pressed
- oil cylinder
- assembly
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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
- B23P21/00—Machines 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
Abstract
The invention relates to the field of the automobile industry, in particular to an engine oil pump shell steel ball and plug pressing method and a controller. The method includes the steps of equipment preparation, element loading, feeding, ball pressing, plug beating, resetting and the like. The controller comprises a programmable controller which controls a clamping cylinder, a drive oil cylinder, an air suction type ejector rod and a translation oil cylinder through electromagnetic valves, the programmable controller is electrically connected with a main motor used for beating a plug through a frequency converter, the limiting position of the drive oil cylinder and the translation oil cylinder is provided with a proximity switch, and the proximity switch is electrically connected with an input port of the programmable controller. By means of the method and the controller, a steel ball and the plug can be pressed into an oil cylinder shell in a one-shot mode, and accordingly work efficiency is improved. High pressure keeps for three seconds after the steel ball is pressed into the oil pump shell, and installation is more reliable. Motions of the assemblies are controlled through the programmable controller with preset programs, positions of execution mechanisms are fed back through the proximity switch, and a whole device is automatically and safely obtained.
Description
Technical field
The present invention relates to auto industry field, relate in particular to a kind of method and controller that is pressed into steel ball and plug for engine oil pump case.
Background technology
As everyone knows, automobile engine is the aggregate of multiple technologies and good parts, and the effect of oil pump is gasoline sucking-off from fuel tank, and is sent in the float chamber of carburetor with gasoline filter by the road.Its action comprises: oil suction (oil-feed), and camshaft rotates, the pumping diaphragm pull bar of leaving behind, pumping diaphragm declines and produces suction, and gasoline is from sucking-off in mailbox, by entering oil pump grease chamber from inlet port after oil pipe, cleaner; Pump oil (fuel-displaced), eccentric wheel turns over certain angle, no longer holds out against rocking arm, and pumping diaphragm spring is upheld, and pumping diaphragm rises, and gasoline is delivered to the float chamber of carburetor through delivery valve from oil-out.In order to ensure oil-feed, to have enough pressure (especially direct fuel-injection engine, higher to the requirement of oil pump oil pressure) when fuel-displaced, oil-out and the oil-in of engine oil pump case are provided with steel ball.In addition, engine oil pump case is provided with multiple hole, as water channel, Oil passage hole, and in order to prevent that winter is because anti-icing fluid is inadequate or cause for quality causes gasoline in pump to freeze, and the anti-spalling hole of design.These holes need to be sealed by plug.Existing engine oil pump case steel ball and plug method of press-fitting and mostly adopt two procedures manual operation, exist efficiency low, insecure problem is installed.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of install reliable, efficiency is high engine oil pump case steel ball and plug method of press-fitting and controller.
For achieving the above object, the scheme that the present invention adopts is: a kind of method that engine oil pump case steel ball and plug are pressed into, comprises the following steps:
(1) equipment is prepared;
Power source: the hydraulic system and the baric systerm that drive each execution oil cylinder and cylinder;
Frame: fixing each executing agency also has an operation workbench;
Workpiece clamping assembly: comprise the limited block, bearing pin, clamping cylinder, the pressing plate that are connected on connecting plate, engine oil pump case is pressed on connecting plate;
Workpiece translational motion assembly: include translation oil cylinder, its one end is fixedly connected in frame, movable end is connected on Workpiece clamping assembly, workpiece translational motion Component driver Workpiece clamping assembly together with engine oil pump case in charging be pressed on two stations and move;
Steel ball is pressed into assembly: be provided with two cover steel balls and be pressed into assembly, aim at respectively oil pump for engine shell workpiece oil-out and oiler position, Mei Tao mechanism has included and has driven oil cylinder and air suction type push rod, push rod is by hydraulic oil cylinder driving, push rod is inner hollow and is provided with gas outlet and air inlet, and push rod is bled and formed that suction type holds steel ball, steel ball is unclamped in inflation;
Beat plug component: include main motor, electric block, pneumatic torque spanner, main motor drives electric block, and pneumatic torque spanner is suspended on the hoist cable of electric block.
(2) engine oil pump case is pressed into steel ball and plug, and step is as follows:
A) pack oil pump for engine shell workpiece into: adjust limited block and make it be close to oil pump for engine shell workpiece edge; Bearing pin one end is penetrated to fastening nut after the machining hole of engine oil pump case, the other end is connected on connecting plate; Send oil to clamping cylinder, make the tight oil pump for engine shell workpiece of its cylinder masthead sidewall; Pressing plate push down tighten after oil pump for engine shell workpiece fixing.
B) material loading: translation oil cylinder action is urged to Workpiece clamping assembly on loading station together with engine oil pump case; The air suction type push rod that steel ball the is pressed into assembly formation negative pressure of bleeding, packs steel ball in push rod bottom; Plug is put into position, plug hole.
C) be pressed into steel ball: translation oil cylinder action is urged to Workpiece clamping assembly to be pressed on station together with engine oil pump case; The oil cylinder that steel ball is pressed into assembly moves simultaneously and steel ball is headed into the oil-in/oil-out of oil pump case, and after time delay pressurize, steel ball is unclamped in push rod inflation.
D) beat plug: start the main motor of beating plug component, drive electric block that pneumatic torque spanner is aimed to plug, start spanner plug is tightened.
E) reset: the oil cylinder that steel ball is pressed into assembly resets, and push rod bottom is left oil-in/oil-out and got back to original position.
F) forward step a) to and continue the operation of next workpiece.
The controller that engine oil pump case steel ball and plug are pressed into, includes rack-mounted Workpiece clamping assembly, steel ball is pressed into assembly, workpiece translational motion assembly, beats plug component; Workpiece clamping assembly is provided with the limited block of engine oil pump case clamping and positioning, bearing pin, pressing plate, clamping cylinder; Workpiece translational motion assembly is provided with translation oil cylinder, and translation oil cylinder one end is fixedly connected in frame, movable end is connected on Workpiece clamping assembly; Steel ball is pressed into assembly and is made up of the air suction type push rod for drawing steel ball and the driving oil cylinder that drives push rod to move, push rod inner hollow is also provided with air inlet and gas outlet, steel ball is pressed into assembly and is provided with two covers, aims at respectively oil-out and the oiler position of engine oil pump case; Beat plug component by leading motor-driven electric block, electric block hoist cable is hung with pneumatic torque spanner and forms; Described clamping cylinder, driving oil cylinder, air suction type push rod, translation oil cylinder and main motor are all electrically connected with controller, controller includes Programmable Logic Controller, magnetic valve, frequency converter, approach switch, the output port connected electromagnetic valve of Programmable Logic Controller and the control end of frequency converter, magnetic valve and clamping cylinder, driving oil cylinder, air suction type push rod and translation oil cylinder electrical connection, frequency converter is electrically connected with main motor, drive the extreme position of oil cylinder, translation oil cylinder that approach switch is set, the input port of approach switch electricity access Programmable Logic Controller.
Totally six of described approach switch numbers, the Derivative limit on the left or on the right position of translation oil cylinder respectively arranges an approach switch, when translation oil cylinder triggers the approach switch of limit on the left position, steel ball be pressed into assembly in its push rod of work station respectively directly over oil-out and oil-in, when translation oil cylinder triggers the approach switch of limit on the right-right-hand limit position, steel ball be pressed into assembly in its push rod of feeding station respectively away from oil-out and oil-in; For the steel ball of oil-out/oil-in be pressed into the driving oil cylinder of assembly upper and lower/Derivative limit on the left or on the right position respectively arranges an approach switch, whether the approach switch of upper/limit on the right-right-hand limit position arrives installing hole for detection of steel ball, and whether the approach switch of down/left extreme position is pressed into completely for detection of steel ball.
Described workbench is provided with oil-in for holding product steel ball box, oil-in steel ball box, blocking head, and product box upper end is equipped with photoelectric sensor, and whether the input port of photoelectric sensor access Programmable Logic Controller for detection of material loading.
The present invention is clamped in engine oil pump case on workbench, is pressed into assembly and beats plug component respectively steel ball and plug to be pressed into oil pump case with steel ball, because the workbench that is pressed into of steel ball and plug completes, has improved operating efficiency; The rear high pressure that is pressed into of steel ball keeps three seconds, installs more reliable; Use the action of the each assembly of pre-set programs Controlled by Programmable Controller, feed back the position of each executing agency with approach switch, completing of whole device automatic safe, and on product box, be provided with photoelectric sensor, photoelectric sensor also accesses to controller, take for detection of having or not to leak, improve the accuracy of installing, prevent maloperation.
Brief description of the drawings
Fig. 1 is the front view of the embodiment of the present invention;
Fig. 2 is the schematic diagram that the Workpiece clamping assembly of Fig. 1 packs workpiece into;
Fig. 3 is the side view of the embodiment of the present invention;
Fig. 4 is the top view of the embodiment of the present invention;
Fig. 5 is embodiment of the present invention control principle drawing;
Description of symbols in figure: 1-Workpiece clamping assembly; 101-limited block I; 102-bearing pin; 103-pressing plate part I; 104-connecting plate; 105-pressing plate part II; 106-compressed oil cylinder; 107-limited block II; 2-frame; 202-workbench; 3-steel ball is pressed into assembly; 301-binder oil cylinder I; 302-push rod I; 303-guide pin bushing plate; 304-bolt; 311-binder oil cylinder II; 312-push rod II; 401-electric block; 402-pneumatic torque spanner; 5-workpiece translational motion assembly; 501-guide rail guide pin bushing assembly; 502-translation oil cylinder; 6-discharging box; 601-oil-in steel ball; 602-oil-out steel ball; 603-plug; The gentle pumping system of 7-hydraulic pump; 8-oil pump for engine shell workpiece.
Detailed description of the invention
For understanding better the present invention, below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is described further, referring to Fig. 1 to 5:
By a kind of engine oil pump case steel ball of the invention process and plug method of press-fitting, comprising:
(1) equipment is prepared: the power resources of whole equipment are provided by hydraulic system and baric systerm 7.Device include the Workpiece clamping assembly 1 of frame 2, the fixation workpiece convenient operation of all members of supporting, for steel ball is pressed into two cover steel balls of oil-out and oil-in be pressed into assembly 3, for drive engine oil pump case on charging and two stations of work mobile workpiece translational motion assembly 5, pack the plug component of beating of plug into.
Frame 2 is provided with workbench 201, on workbench 201, connect Workpiece clamping assembly 1, the oil-in steel ball that workbench 201 tops are provided with vertical movement is pressed into assembly, and workbench side is provided with the oil-out steel ball moving horizontally and is pressed into assembly, and workbench 201 top end are hung with beats plug component.
What Workpiece clamping assembly of the present invention adopted is Multi-directional limiting, not only include the limited block I101 and the limited block II107 that abut against workpiece outer, bearing pin 102 in the hole of insertion engine oil pump case 8, pressing plate part I103 by Work-sheet pressing on connecting plate 104 and pressing plate part II105, also include clamping cylinder 106.
The power resources of workpiece translational motion assembly 5 are in translation oil cylinder 502, and translation oil cylinder 502 is fixedly connected on workbench 202, cylinder bar is connected with connecting plate 104.Steel ball is pressed into function that assembly 3 completes and mainly comprises the pressure that needs are provided while holding steel ball, binder before binder.Its structure includes air suction type push rod I302 and push rod II312, binder oil cylinder I301 and binder oil cylinder II311, push rod bottom end opening, inner hollow, push rod sidewall is offered air admission hole and the venthole of inflation and the use of bleeding, and pore is connected with internal communication and with baric systerm.In order to pick up steel ball and to form negative pressure, push rod bottom end opening diameter is less than the diameter of steel ball to be pressed into.When filling with substance is bled from air suction type push rod, and steel ball is put into push rod bottom end opening, and inner chamber forms negative pressure, and steel ball is picked up, and after steel ball is pressed in housing, towards push rod inflation, unclamps steel ball.The action of air suction type push rod is by binder hydraulic oil cylinder driving, and the cylinder body of binder oil cylinder is fixed, cylinder bar end connects air suction type push rod.Steel ball is pressed into assembly 3 two covers is set, and a set ofly does vertical movement, is pressed into for the steel ball of oil-in.For Stability Analysis of Structures, oil-in is pressed into assembly below with steel ball and is provided with guide pin bushing part, include guide pin bushing plate 303, bolt 304, offer oil-in steel ball and be pressed into the dowel hole that assembly push rod I302 passes through on guide pin bushing plate 303, guide pin bushing plate 303 both sides are connected on workbench 202 by bolt 304.Another set of steel ball is pressed into assembly workbench 202 sides is set, and moves horizontally for the steel ball of oil-out and is pressed into.
Beat plug component and include main motor, electric block 401, pneumatic torque spanner 402, main motor drives electric block, and electric block 401 is suspended on workbench top, and pneumatic torque spanner 402 is suspended on the hoist cable of electric block 401.According to the diverse location of hole, crawl electric block 401 hangs pneumatic torque spanner 402 to establish correct position.
(2) engine oil pump case is pressed into steel ball and plug, and step is as follows:
A) pack oil pump for engine shell workpiece into: adjust limited block I101, limited block II107 it is close to behind oil pump for engine shell workpiece edge, fastening nut is fixed.Bearing pin 102 one end penetrate fastening nut after the machining hole of engine oil pump case, the other end is connected on connecting plate 104.Clamping cylinder 106 send oil, tight oil pump for engine shell workpiece 8 sidewalls of cylinder masthead.Pressing plate part I103, pressing plate part II105 push down tighten after oil pump for engine shell workpiece 8 fixing.The free degree of Workpiece clamping assembly 1 engagement limits oil pump for engine shell workpiece 8.
B) material loading: translation oil cylinder 502 moves Workpiece clamping assembly 1 is urged on loading station together with oil pump for engine shell workpiece 8, push rod is convenient to pack into steel ball away from being pressed into hole.The air suction type push rod that steel ball the is pressed into assembly 3 formation negative pressure of bleeding, packs steel ball in push rod bottom; Plug is put into position, plug hole.
C) be pressed into steel ball: translation oil cylinder 502 moves Workpiece clamping assembly 1 is urged to and is pressed on station together with engine oil pump case 8; The oil cylinder that steel ball is pressed into assembly 3 moves simultaneously and steel ball is headed into the oil-in/oil-out of oil pump case 8, and after time delay pressurize, steel ball is unclamped in push rod inflation.
D) beat plug: start the main motor of beating plug component, drive electric block 401 that pneumatic torque spanner 402 is aimed to plug, start spanner plug is tightened.
E) reset: the oil cylinder that steel ball is pressed into assembly 3 resets, and push rod bottom is left oil-in/oil-out and got back to original position.
F) forward step a) to and continue the operation of next workpiece.
The controller that engine oil pump case steel ball and plug are pressed into, include Programmable Logic Controller, magnetic valve, frequency converter, approach switch, the output port connected electromagnetic valve of Programmable Logic Controller and the control end of frequency converter, magnetic valve and clamping cylinder, driving oil cylinder, air suction type push rod and translation oil cylinder electrical connection, frequency converter is electrically connected with main motor, drive the extreme position of oil cylinder, translation oil cylinder that approach switch is set, the input port of approach switch electricity access Programmable Logic Controller.Totally six of described approach switch numbers, the Derivative limit on the left or on the right position of translation oil cylinder respectively arranges an approach switch, when translation oil cylinder triggers the approach switch of limit on the left position, steel ball be pressed into assembly in its push rod of work station respectively directly over oil-out and oil-in, when translation oil cylinder triggers the approach switch of limit on the right-right-hand limit position, steel ball be pressed into assembly in its push rod of feeding station respectively away from oil-out and oil-in; For the steel ball of oil-out/oil-in be pressed into the driving oil cylinder of assembly upper and lower/Derivative limit on the left or on the right position respectively arranges an approach switch, whether the approach switch of upper/limit on the right-right-hand limit position arrives installing hole for detection of steel ball, and whether the approach switch of down/left extreme position is pressed into completely for detection of steel ball.Workbench 202 is provided with discharging box 6, is respectively used to hold steel ball 601 for oil-in, steel ball 602, plug 603 for oil-out, and discharging box 6 upper ends are equipped with for monitoring to have or not leaks the photoelectric sensor of taking
Above disclosed is only preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, and the equivalence of therefore doing according to the present patent application the scope of the claims changes, and still belongs to protection scope of the present invention.
Claims (4)
1. the method that engine oil pump case steel ball and plug are pressed into, is characterized in that, comprises the following steps:
(1) equipment is prepared;
Power source: the hydraulic system and the baric systerm that drive each execution oil cylinder and cylinder;
Frame: fixing each executing agency also has an operation workbench;
Workpiece clamping assembly: comprise the limited block, bearing pin, clamping cylinder, the pressing plate that are connected on connecting plate, engine oil pump case is pressed on connecting plate;
Workpiece translational motion assembly: include translation oil cylinder, its one end is fixedly connected in frame, movable end is connected on Workpiece clamping assembly, workpiece translational motion Component driver Workpiece clamping assembly together with engine oil pump case in charging be pressed on two stations and move;
Steel ball is pressed into assembly: be provided with two cover steel balls and be pressed into assembly, aim at respectively oil pump for engine shell workpiece oil-out and oiler position, Mei Tao mechanism has included and has driven oil cylinder and air suction type push rod, push rod is by hydraulic oil cylinder driving, push rod is inner hollow and is provided with gas outlet and air inlet, and push rod is bled and formed that suction type holds steel ball, steel ball is unclamped in inflation;
Beat plug component: include main motor, electric block, pneumatic torque spanner, main motor drives electric block, and pneumatic torque spanner is suspended on the hoist cable of electric block;
(2) engine oil pump case is pressed into steel ball and plug, and step is as follows:
(a) pack oil pump for engine shell workpiece into: adjust limited block and make it be close to oil pump for engine shell workpiece edge; Bearing pin one end is penetrated to fastening nut after the machining hole of engine oil pump case, the other end is connected on connecting plate; Send oil to clamping cylinder, make the tight oil pump for engine shell workpiece of its cylinder masthead sidewall; Pressing plate push down tighten after oil pump for engine shell workpiece fixing;
(b) material loading: translation oil cylinder action is urged to Workpiece clamping assembly on loading station together with engine oil pump case; The air suction type push rod that steel ball the is pressed into assembly formation negative pressure of bleeding, packs steel ball in push rod bottom; Plug is put into position, plug hole;
(c) be pressed into steel ball: translation oil cylinder action is urged to Workpiece clamping assembly to be pressed on station together with engine oil pump case; The oil cylinder that steel ball is pressed into assembly moves simultaneously and steel ball is headed into the oil-in/oil-out of oil pump case, and after time delay pressurize, steel ball is unclamped in push rod inflation;
(d) beat plug: start electric block pneumatic torque spanner is aimed to plug, cocking is tightened plug;
(e) reset: the oil cylinder that steel ball is pressed into assembly resets, and push rod bottom is left oil-in/oil-out and got back to original position;
(f) forward step (a) to and continue the operation of next workpiece.
2. the controller that engine oil pump case steel ball and plug are pressed into, is characterized in that, includes rack-mounted Workpiece clamping assembly, ball indenter assembly, workpiece translational motion assembly; Workpiece clamping assembly is provided with the limited block of engine oil pump case clamping and positioning, bearing pin, pressing plate, clamping cylinder; Workpiece translational motion assembly is provided with translation oil cylinder, and translation oil cylinder one end is fixedly connected in frame, movable end is connected on Workpiece clamping assembly; The driving oil cylinder that ball indenter assembly is moved by the air suction type push rod for drawing steel ball and driving push rod forms, push rod inner hollow is also provided with air inlet and gas outlet, ball indenter assembly is provided with two covers, aims at respectively oil-out and the oiler position of engine oil pump case; Beat plug component by leading motor-driven electric block, electric block hoist cable is hung with pneumatic torque spanner and forms; Described clamping cylinder, driving oil cylinder, air suction type push rod, translation oil cylinder and main motor are all electrically connected with controller, controller includes Programmable Logic Controller, magnetic valve, frequency converter, approach switch, the output port connected electromagnetic valve of Programmable Logic Controller and the control end of frequency converter, magnetic valve and clamping cylinder, driving oil cylinder, air suction type push rod and translation oil cylinder electrical connection, transducer drive is made the main motor of plug component, drive the extreme position of oil cylinder, translation oil cylinder that approach switch is set, the input port of approach switch electricity access Programmable Logic Controller.
3. the controller that engine oil pump case steel ball according to claim 2 and plug are pressed into, it is characterized in that, totally six of described approach switch numbers, the Derivative limit on the left or on the right position of translation oil cylinder respectively arranges an approach switch, when translation oil cylinder triggers the approach switch of limit on the left position, steel ball be pressed into assembly in its push rod of work station respectively directly over oil-out and oil-in, when translation oil cylinder triggers the approach switch of limit on the right-right-hand limit position, steel ball be pressed into assembly in its push rod of feeding station respectively away from oil-out and oil-in; For the steel ball of oil-out/oil-in be pressed into the driving oil cylinder of assembly upper and lower/Derivative limit on the left or on the right position respectively arranges an approach switch, whether the approach switch of upper/limit on the right-right-hand limit position arrives installing hole for detection of steel ball, and whether the approach switch of down/left extreme position is pressed into completely for detection of steel ball.
4. the controller that engine oil pump case steel ball according to claim 2 and plug are pressed into, it is characterized in that: described workbench is provided with oil-in steel ball box, oil-in steel ball box, the blocking head for holding product, product box upper end is equipped with photoelectric sensor, and whether the input port of photoelectric sensor access Programmable Logic Controller for detection of material loading.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410241696.7A CN103978368B (en) | 2014-06-03 | 2014-06-03 | Engine oil pump case steel ball and plug method of press-fitting and controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410241696.7A CN103978368B (en) | 2014-06-03 | 2014-06-03 | Engine oil pump case steel ball and plug method of press-fitting and controller |
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| CN103978368A true CN103978368A (en) | 2014-08-13 |
| CN103978368B CN103978368B (en) | 2016-03-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107052790A (en) * | 2017-04-21 | 2017-08-18 | 福州六和机械有限公司 | A kind of aluminium pump cover steel ball spring press-in device and its method of work |
| CN109227119A (en) * | 2018-11-02 | 2019-01-18 | 长兴佰菲特机械有限公司 | A kind of oil pump multistation automatic assembly method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107052790A (en) * | 2017-04-21 | 2017-08-18 | 福州六和机械有限公司 | A kind of aluminium pump cover steel ball spring press-in device and its method of work |
| CN107052790B (en) * | 2017-04-21 | 2023-04-14 | 福州六和机械有限公司 | Steel ball spring pressing device of aluminum pump cover and working method of steel ball spring pressing device |
| CN109227119A (en) * | 2018-11-02 | 2019-01-18 | 长兴佰菲特机械有限公司 | A kind of oil pump multistation automatic assembly method |
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| CN103978368B (en) | 2016-03-30 |
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Effective date of registration: 20161024 Address after: 318000 Jiaojiang province Taizhou District workers West Road, No. 428, No. Patentee after: Taizhou city sea pump industry limited company Address before: No. 1139 Taizhou City, Zhejiang province Jiaojiang City Road 318000 Patentee before: Zhan Baishao Patentee before: Taizhou University |
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Effective date of registration: 20161215 Address after: 4 Luqiao District South Street joint village in Taizhou City, Zhejiang province 318050 No. 18 Patentee after: Chen Daoyuan Address before: 318000 Jiaojiang province Taizhou District workers West Road, No. 428, No. Patentee before: Taizhou city sea pump industry limited company |
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Effective date of registration: 20170123 Address after: 318000 Taizhou Province, Jiaojiang City, the third floor of the streets of the village of Guo Jia (development road, East extension section) Patentee after: TAIZHOU JIUYI ELECTROMECHANICAL CO., LTD. Address before: 4 Luqiao District South Street joint village in Taizhou City, Zhejiang province 318050 No. 18 Patentee before: Chen Daoyuan |