CN116038273A - Automatic production line of pulse type precise electromagnetic metering valve - Google Patents
Automatic production line of pulse type precise electromagnetic metering valve Download PDFInfo
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- CN116038273A CN116038273A CN202211701789.4A CN202211701789A CN116038273A CN 116038273 A CN116038273 A CN 116038273A CN 202211701789 A CN202211701789 A CN 202211701789A CN 116038273 A CN116038273 A CN 116038273A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 238000003466 welding Methods 0.000 claims abstract description 62
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 230000005389 magnetism Effects 0.000 claims abstract description 14
- 238000005259 measurement Methods 0.000 claims abstract description 5
- 238000012360 testing method Methods 0.000 claims abstract description 5
- 238000005056 compaction Methods 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 33
- 239000000047 product Substances 0.000 claims description 26
- 230000008569 process Effects 0.000 claims description 14
- 230000001360 synchronised effect Effects 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 9
- 239000011265 semifinished product Substances 0.000 claims description 9
- 239000000725 suspension Substances 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 4
- 238000007639 printing Methods 0.000 claims description 4
- 230000003993 interaction Effects 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 claims description 2
- 230000002950 deficient Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000000463 material Substances 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 238000013461 design Methods 0.000 description 4
- 230000008646 thermal stress Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000011257 shell material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Engineering & Computer Science (AREA)
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- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention relates to the technical field of automatic production processes of pulse type precise electromagnetic metering valves, in particular to an automatic production line of the pulse type precise electromagnetic metering valves, which comprises a control system and further comprises the following steps: (1) assembling and welding a spray plate; (2) valve core assembly and welding; (3) The main shaft sleeve is assembled, and the main shaft sleeve is assembled with the magnetism isolating pipe and the valve seat; (4) connecting rod assembly and welding; (5) feeding a coil assembly; (6) assembling a first sealing ring; (7) assembling a spring; (8) assembling a limiting tube; (9) detecting compaction; (10) flow adjustment measurement; (11) installing a filter screen; and (12) assembling a second sealing ring and testing tightness. The invention has the advantages of high automation degree, stable assembly, good lift value control effect, low defective rate and the like.
Description
Technical Field
The invention relates to the technical field of automatic production processes of pulse type precise electromagnetic metering valves, in particular to an automatic production line of pulse type precise electromagnetic metering valves.
Background
At present, only a few foreign equipment companies form full-automatic production lines for the pulse type precise electromagnetic metering valve. Because the product design and the process design of the full-automatic production line are tightly combined with the equipment design and the assembly sequence of each part is reasonable, the optimal through rate can be realized, the development design from the process to the automatic line planning in China has not been realized in large batch by manufacturers, and the semi-automatic process assembly is mainly realized by segmentation and independent realization.
Disclosure of Invention
Aiming at the defects, the invention provides an automatic production line of the pulse type precise electromagnetic metering valve with high qualification rate.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the automatic production line of the pulse type precise electromagnetic metering valve comprises a control system and further comprises the following steps:
(1) Assembling and welding a spray plate;
(2) Valve core assembly and welding;
(3) The main shaft sleeve is assembled, and the main shaft sleeve is assembled with the magnetism isolating pipe and the valve seat;
(4) Assembling and welding connecting rods;
(5) Feeding a coil assembly, namely carrying out lift adjustment on the coil assembly, a main shaft sleeve, a magnetism isolating pipe and a valve seat at a lift adjustment station, wherein the valve seat and the magnetism isolating pipe form a first connecting joint, and the magnetism isolating pipe and the main shaft sleeve form a second connecting joint; synchronously welding the first connecting seam and the second connecting seam to form a semi-finished product;
(6) Assembling a first sealing ring;
(7) Assembling a spring;
(8) Assembling a limiting pipe;
(9) Detecting compaction, and monitoring the pressing force value and the position of the limiting pipe by using a servo press-fitting system;
(10) Flow adjustment and measurement;
(11) Installing a filter screen, performing press fitting by using a servo press fitting system, and monitoring a force value in the process;
(12) And (5) assembling a second sealing ring and testing tightness.
Further, the method also comprises laser coding, wherein after the connecting rod assembly and welding of the step (4) are finished, the laser coding is carried out on the assembled parameters of the product by a two-dimensional code printing and reading integrated machine.
Further, the method further comprises a detection procedure, wherein the detection procedure is to read the two-dimensional code on the product through a code reader, and parameters assembled in the reading procedure are checked to determine whether unqualified products flow into the wire tail.
Furthermore, the magnetic suspension system consists of a coil, a linear array CCD sensor, a parallel light source, a fixed platform and a controller.
Furthermore, the synchronous welding adopts a fiber laser welding system provided with two groups of core wavelength.
Furthermore, the fiber laser welding system uses the same laser pulse source, and then uses a spectroscope to generate two laser beams to realize the synchronous welding.
Further, the control system comprises a total server, a firewall, an extranet route, an extranet inquiry terminal, an intranet and a primary switch, a regional server, a secondary switch, a machine controller and a machine executing device. Further, the relation of each component of the control system:
the total server is responsible for storing all production process data, authority management, data statistics and query services;
the firewall and the external network router realize the internal and external network isolation;
the external network query terminal comprises a computer or a tablet or a smart phone which logs in a WEB interface of the server to query various data; the primary switch realizes all intranet connection;
the regional server is responsible for data interaction, storage and pipeline scheduling in each partition;
the second-level switch realizes intra-area network interconnection; each machine controller realizes the specific function of the machine;
the machine is internally provided with components and parts required by automatic control of each station.
Compared with the prior art, the invention has the beneficial effects that:
1. in the invention, automatic equipment such as a mechanical arm is adopted in the whole process to carry out clamping operation, in order to improve the assembly accuracy and prevent product problems, the valve core and the steel ball are assembled by adopting a suspension clamping method to assemble and weld the injection plate and the valve core, so that the injection plate and the valve core are prevented from influencing the product; and then, the spindle sleeve, the magnetism isolating pipe and the valve seat are assembled, lift adjustment is completed in the assembly stage of the coil assembly, synchronous welding is performed, and in automatic control, precise and controllable lift can be realized, so that the accuracy of products is ensured.
2. The comprehensive production takt of the semi-automatic equipment in the traditional mode is 20-30 seconds/piece, and the production line can achieve the production efficiency of less than or equal to 5.5 s/piece.
3. The valve core and the steel ball are assembled in a suspension clamping mode, so that the valve core and the steel ball are not injured in the assembling process, the valve is prevented from leaking to the greatest extent, and the valve core and the steel ball are clamped by using an air finger or a vacuum chuck in the traditional mode, so that scratches or foreign matters are easily generated on the surface of a part, and the quality of the part is influenced; the method uses the magnetic suspension technology to take materials, position and fix the parts, and then welds the parts, and the clamping mechanism is in non-contact with the parts in the process, so that the parts are ensured to be damaged;
4. by adopting the welding process, the lift value of the product can be ensured to be unchanged after welding, the accuracy is high, the lift consistency is good, the defective rate of the product is obviously reduced, and the quality of the product is obviously improved.
5. The optical fiber laser welding system uses the same laser pulse source to ensure that laser pulses are strictly synchronous, so that laser pulses of the two welding seams of the first connecting seam and the second connecting seam arrive at the same moment, the thermal stress of the two welding seams is exactly counteracted, uncontrollable fluctuation of the thermal stress of a product shell material after high-temperature welding is effectively reduced, and the influence on the welding precision of a welding body is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments will be briefly described below.
FIG. 1 is a schematic diagram of the structure of a suspension gripping steel ball of the present invention;
FIG. 2 is a schematic illustration of a weld performed using a fiber laser welding system;
FIG. 3 is a schematic diagram of the composition of the control system of the present invention;
FIG. 4 is a schematic flow chart of the automatic production line of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "inner", "front", "rear", "left", "right", etc., are based on directions or positional relationships shown in the drawings, or directions or positional relationships in which the inventive product is conventionally put in use, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The automatic production line of the pulse type precise electromagnetic metering valve is arranged in a straight line (the production line can also be designed into an L-shaped layout, a U-shaped layout, a rotary layout and the like according to the layout condition of a production workshop), and a finished product of the line tail swinging disc is outgoing. The parts enter the production line and are clamped and placed in the working positions by the automatic orderly-arrangement manipulator after being placed in the appointed feeding mechanism by a material staff, a plurality of working procedures work independently, the working procedures are transmitted to the appointed positions by the jig on the conveying line, and the jig is circularly recycled. The construction procedure of the production line is a typical process route in the category of precise electromagnetic metering valves, the gasoline, diesel oil and LNG and CNG nozzles in the needle valve structure are all routes, the production line can be switched by designing and replacing the fixture, and the valve of the liquid medium can also be switched by the pressure source. All parts are arranged on the special flexible material tray, the round direct vibration material tray and the swing material tray which are respectively provided, and are orderly arranged for the manipulator to take materials, and each tray is provided with a sensor or a visual lens for judgment. And each conveying section is stopped by a blocking cylinder and a sensor.
Comprising a control system, further comprising the steps of:
(1) Assembling and welding the injection plate, taking materials by a manipulator, putting the injection plate into a valve seat injection plate assembling station, and assembling the injection plate onto a valve seat by a servo press-fitting head of the injection plate; then taking materials by a manipulator, and putting the materials into a spray plate welding station for welding;
(2) Valve core assembly and welding, wherein the valve core is assembled by a valve core assembly robot, and then a magnetic suspension system is adopted to assemble the steel ball; welding by using a valve core welding head; in the embodiment, the valve core welding station synchronously works while the injection plate is assembled;
(3) The main shaft sleeve is assembled, and the main shaft sleeve is assembled with the magnetism isolating pipe and the valve seat;
(4) The assembly and welding of the connecting rod are completed at a connecting rod welding station;
(5) Feeding a coil assembly, namely carrying out lift adjustment on the coil assembly, a main shaft sleeve, a magnetism isolating pipe and a valve seat at a lift adjustment station, wherein the valve seat and the magnetism isolating pipe form a first connecting joint, and the magnetism isolating pipe and the main shaft sleeve form a second connecting joint; synchronously welding the first connecting seam and the second connecting seam to form a semi-finished product; the specific flow is as follows: when the lift adjustment station is reached, the manipulator is used for taking materials and placing the materials into an adjustment working head for adjustment, and 12 lift adjustment working heads (increased or decreased according to the beat) are used for balancing the average beat of the whole line; the product after the lift adjustment is put into the carrier flow to the tail of the lift adjustment conveying section, the carrier is taken by the lift transfer manipulator and put into the flow adjustment measurement conveying section, and the carrier conveying section flows into the welding station; the precise adjustment of the internal parts is performed firstly, then the precise adjustment can be performed by clamping and adjusting the outer body of the combined body according to the internal lift standard value of the high-speed electromagnetic valve, the lift can be adjusted in a welding section, the lift accuracy is ensured, meanwhile, the influence caused by the welding process can be effectively reduced by adopting two laser beams of the same laser pulse source for synchronous welding, the rotating platform is synchronously rotated and welded in the state of tightly propping against a workpiece in the welding process, the influence of the welding process on the lift accuracy can be effectively eliminated, the lift consistency of a product is finally ensured, the defective rate of the product is obviously reduced, and the quality of the product is obviously improved;
(6) Assembling a first sealing ring, and assembling the first sealing ring on the semi-finished product by using a manipulator;
(7) Assembling a spring, namely transferring the carrier to a spring assembling station after the sealing ring is installed, and placing the spring into the semi-finished product by a manipulator;
(8) The limiting pipe is assembled, and after the semi-finished product is placed into the spring, a mechanical arm is used for placing the semi-finished product into the limiting pipe;
(9) Detecting compaction, and monitoring the pressing force value and the position of the limiting pipe by using a servo press-fitting system;
(10) Flow adjustment and measurement; the manipulator takes the semi-finished product to carry out flow adjustment, after the flow adjustment is finished, the system is switched to carry out flow detection and calibration, and the number of flow working heads is 6 (according to the increase and decrease of beats); the semi-finished product after the flow adjustment flows into a filter screen pressing station to install a filter screen;
(11) Installing a filter screen, performing press fitting by using a servo press fitting system, and monitoring a force value in the process; after the filter screen is installed, the filter screen flows into an assembly welding station to carry out assembly welding of finished products, and an assembly welding head is used for welding; after welding is completed, moving to a sealing ring assembly station;
(12) Assembling a second sealing ring and testing tightness; the mechanical arm is provided with a second sealing ring, the carrier is moved to the sealing test conveying section after the two sealing rings are installed, the carrier is moved to the sealing detection station, and the mechanical arm clamps the sealing detection head to detect the sealing property; and the qualified product is placed back into the carrier and flows into the code reading and selecting tray arranging station.
Further, the method also comprises laser coding, wherein after the connecting rod assembly and welding of the step (4) are finished, the laser coding is carried out on the assembled parameters of the product by a two-dimensional code printing and reading integrated machine.
Further, the method further comprises a detection procedure, wherein the detection procedure is to read the two-dimensional code on the product through a code reader, and parameters assembled in the reading procedure are checked to determine whether unqualified products flow into the wire tail.
Furthermore, the magnetic suspension system consists of a coil, a linear array CCD sensor, a parallel light source, a fixed platform and a controller. In this embodiment, the current of the coil is controlled by the controller, and continuous adjustment in the range of 0 to 10A can be achieved. The working flow is as follows:
1. after the coil moves to the steel ball material outlet, electrifying to generate a starting magnetic field;
2. turning on a parallel light source, reading data of a CCD sensor by a controller to obtain the position of the steel ball, and correcting output current by using a PID algorithm to enable the height of the steel ball to be at a set position A (namely, the transport height);
3. moving the coil to an assembling position, and calculating control current by the controller according to data of the CCD sensor and a set position B (namely the assembling height) by using a PID algorithm, so that the height of the steel ball is positioned at the position B, and the steel ball just falls on a valve core of the fixed platform at the moment;
4. the coil is powered off, a negative pressure channel is opened, so that the steel ball is fastened on the valve core and is sent to the next station.
Furthermore, the synchronous welding adopts a fiber laser welding system provided with two groups of core wavelength.
Furthermore, the fiber laser welding system uses the same laser pulse source, and then uses a spectroscope to generate two laser beams to realize the synchronous welding. The advantages of this solution are: the same laser pulse source is used, so that laser pulses of the two welding seams of the first connecting seam and the second connecting seam are guaranteed to be strictly synchronous, the laser pulses of the two welding seams arrive at the same moment, the thermal stresses of the two welding seams are enabled to be exactly counteracted, uncontrollable fluctuation of the thermal stresses of the shell materials of the product after high-temperature welding is effectively reduced, and the influence on the welding precision of the welding body is reduced.
Further, the control system comprises a total server, a firewall, an extranet route, an extranet inquiry terminal, an intranet and a primary switch, a regional server, a secondary switch, a machine controller and a machine executing device. Further, the relation of each component of the control system:
the total server is responsible for storing all production process data, authority management, data statistics and query services;
the firewall and the external network router realize the internal and external network isolation;
the external network query terminal comprises a computer or a tablet or a smart phone which logs in a WEB interface of the server to query various data; the primary switch realizes all intranet connection;
the regional server is responsible for data interaction, storage and pipeline scheduling in each partition;
the second-level switch realizes intra-area network interconnection; each machine controller realizes specific functions of the machine, such as motor control, sensor data acquisition and the like;
the machine is internally provided with components required by automatic control of each station, such as a motor, an electromagnetic valve, a flowmeter and the like.
Claims (8)
1. The automatic production line of the pulse type precise electromagnetic metering valve is characterized by comprising a control system and further comprising the following steps:
(1) Assembling and welding a spray plate;
(2) Valve core assembly and welding;
(3) The main shaft sleeve is assembled, and the main shaft sleeve is assembled with the magnetism isolating pipe and the valve seat;
(4) Assembling and welding connecting rods;
(5) Feeding a coil assembly, namely carrying out lift adjustment on the coil assembly, a main shaft sleeve, a magnetism isolating pipe and a valve seat at a lift adjustment station, wherein the valve seat and the magnetism isolating pipe form a first connecting joint, and the magnetism isolating pipe and the main shaft sleeve form a second connecting joint; synchronously welding the first connecting seam and the second connecting seam to form a semi-finished product;
(6) Assembling a first sealing ring;
(7) Assembling a spring;
(8) Assembling a limiting pipe;
(9) Detecting compaction, and monitoring the pressing force value and the position of the limiting pipe by using a servo press-fitting system;
(10) Flow adjustment and measurement;
(11) Installing a filter screen, performing press fitting by using a servo press fitting system, and monitoring a force value in the process;
(12) And (5) assembling a second sealing ring and testing tightness.
2. The automatic production line of the pulse type precise electromagnetic metering valve according to claim 1, wherein: the two-dimensional code printing and reading integrated machine is used for carrying out laser code printing on the assembled parameters of the product after the connecting rod in the step (4) is assembled and welded.
3. The automatic production line of the pulse type precise electromagnetic metering valve according to claim 2, characterized in that: the method further comprises a detection procedure, wherein the detection procedure is to read the two-dimensional code on the product through a code reader, and parameters assembled in the reading procedure are checked to determine whether unqualified products flow into the wire tail.
4. The automatic production line of the pulse type precise electromagnetic metering valve according to claim 1, wherein: the magnetic suspension system consists of a coil, a linear array CCD sensor, a parallel light source, a fixed platform and a controller.
5. The automatic production line of the pulse type precise electromagnetic metering valve according to claim 1, wherein: the synchronous welding adopts an optical fiber laser welding system provided with two groups of core diameter wavelengths.
6. The automatic production line of the pulse type precise electromagnetic metering valve according to claim 5, wherein: the fiber laser welding system uses the same laser pulse source, and then uses a spectroscope to generate two laser beams to realize the synchronous welding.
7. The automatic production line of the pulse type precise electromagnetic metering valve according to claim 1, wherein: the control system comprises a total server, a firewall, an external network route, an external network query terminal, an internal network and a primary switch, an area server, a secondary switch, a machine controller and a machine execution device.
8. The pulsed precision electromagnetic metering valve automated production line of claim 7, wherein: relationship of the components of the control system:
the total server is responsible for storing all production process data, authority management, data statistics and query services;
the firewall and the external network router realize the internal and external network isolation;
the external network query terminal comprises a computer or a tablet or a smart phone which logs in a WEB interface of the server to query various data; the primary switch realizes all intranet connection;
the regional server is responsible for data interaction, storage and pipeline scheduling in each partition;
the second-level switch realizes intra-area network interconnection; each machine controller realizes the specific function of the machine;
the machine is internally provided with components and parts required by automatic control of each station.
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|---|---|---|---|
| CN202211701789.4A CN116038273B (en) | 2022-12-29 | 2022-12-29 | Automatic production line of pulse type precise electromagnetic metering valve |
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| CN202211701789.4A CN116038273B (en) | 2022-12-29 | 2022-12-29 | Automatic production line of pulse type precise electromagnetic metering valve |
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| CN116038273B CN116038273B (en) | 2024-04-16 |
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| CN108953750A (en) * | 2018-07-10 | 2018-12-07 | 浙江福瑞科流控机械有限公司 | It can the online buried ball valve of welding entirely and its assemble method with pressure for replacing valve rod sealing assembly |
| CN109848681A (en) * | 2019-04-08 | 2019-06-07 | 浙江金隆铜业股份有限公司 | A kind of spool assembling pressure rubber pad equipment |
| CN213437813U (en) * | 2020-08-04 | 2021-06-15 | 苏州韩斯登鼎自动化设备科技有限公司 | Welding detection combined type equipment for electromagnetic valve |
| CN115388188A (en) * | 2021-05-20 | 2022-11-25 | 盾安环境技术有限公司 | Assembly method of reversible electromagnetic valve |
| CN217142777U (en) * | 2022-04-01 | 2022-08-09 | 徐海锋 | Electromagnetic valve fuel injector lift adjusting, positioning, sealing and welding integrated machine |
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