CN110206711A - Crank-linkage type freezer compressor valve plate gasket chooses to install system and method - Google Patents
Crank-linkage type freezer compressor valve plate gasket chooses to install system and method Download PDFInfo
- Publication number
- CN110206711A CN110206711A CN201910345184.8A CN201910345184A CN110206711A CN 110206711 A CN110206711 A CN 110206711A CN 201910345184 A CN201910345184 A CN 201910345184A CN 110206711 A CN110206711 A CN 110206711A
- Authority
- CN
- China
- Prior art keywords
- gasket
- valve plate
- valve
- plate gasket
- box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/22—Devices influencing the relative position or the attitude of articles during transit by conveyors
- B65G47/24—Devices influencing the relative position or the attitude of articles during transit by conveyors orientating the articles
- B65G47/256—Devices influencing the relative position or the attitude of articles during transit by conveyors orientating the articles removing incorrectly orientated articles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
- F04B39/102—Adaptations or arrangements of distribution members the members being disc valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/14—Provisions for readily assembling or disassembling
Abstract
What the present invention disclosed a kind of crank-linkage type freezer compressor valve plate gasket chooses to install system and method.System picks and places material assembling control device, the stepping box of valve plate gasket, the pick-and-place material assembling device of valve plate gasket, cylinder face and measuring device, the ERP management system in valve board assembly gap by the choosing pad of valve plate gasket and forms.Valve plate gasket chooses to install system automation, reduces the labor intensity and error rate of assembly station, improves production efficiency and compressor quality；It chooses to install system and ERP is integrated, system has scalability；Green indicator light is arranged in valve plate gasket stepping box, when picking and placing material assembling device failure, can assist manually choosing to install for valve plate gasket assembly station, maintain assembly line operation, improve the availability of assembly line；The neglected loading of valve plate gasket detects, and improves the reliability of system.
Description
Technical field
The invention belongs to displacement measurement, gasket choosing pad, pick-and-place are expected and what is assembled chooses to install technology scope；It particularly relates to towards crank
Link-type freezer compressor valve plate gasket chooses to install system and method.
Background technique
Gasket chooses to install the key common technology that technology is modern industry assembly department.Automobile main reducer assembly is related to whole
Vehicle quality, assembly technology parameter are meant to ensure that active/passive bevel gear teeth side clearance and main reducing gear staring torque, corresponding technology
Means are the adjustment gaskets for choosing to install suitable thickness, and control dynamic bevel gear is in axial position；Automatic gear-box by rubbing more
Piece shift brake is shifted gears, and the gap of friction plate group is the key control parameter of brake assembling quality, corresponding to handle
Means are the flange gaskets for choosing to install suitable thickness, correct the gap of friction plate group；The postorder dress that engine cylinder cover installs
It is adjustment valve clearance with process, whether power performance, fuel consumption and the discharge of engine each depend on valve clearance properly,
Relevant safeguard is the air valve pad for choosing to install suitable thickness, adjusts the gap of valve.Totally-enclosed crank-linkage type refrigerator pressure
When contracting machine assembles, valve plate gasket assembly station also uses gasket to choose to install technology realization.Gasket chooses to install system and is related to μm order of magnitude
The choosing pad of high precision position shift measurement and gasket picks and places material and assembling totally four technologies；The concern point focusing high precision position of industry
The attention rate of shift measurement, rear three technology is inadequate.Full automatic displacement measuring device has nibbled the domain of traditional slide calliper rule, micrometer；
But the choosing pad of gasket, pick and place material and package technique progress is relatively slow, and become gasket and chooses to install weak link in system, dress
Bottleneck with assembly line.
2017, Chinese domestic refrigerator yield 8670.3 ten thousand；2018, it is contemplated that yield >=8510.4 ten thousand；2013
Since, China's domestic refrigerator annual output maintains more than 8,000 ten thousand levels always, accounts for 5 one-tenth of Gross World Product or more.1913,
First domestic refrigerator is born；Mainstream refrigeration mode based on compressor refrigeration follows so far；Therefore, compressor is that refrigeration for refrigerator is set
Core component in standby.2015, homebred fridges compressor was 1.237 hundred million；2016, up to 1.379 hundred million.Freezer compressor
Comprehensive Persisting exploitation is obtained, variation, motor aluminum steel, miniaturization, frequency conversion including refrigerant etc., short-term inner compressor
It is difficult to have subversive breakthrough again.Compressor is divided into according to refrigeration mechanism: gas compression, gas absorption and sorption and semiconductor-type；
Wherein, for vaporized refrigerant by the way that heat release is liquefied within the condenser after compressor compresses, liquid refrigerant vaporizes suction in evaporator
The compressor type refrigerator of heat, refrigerating efficiency highest, production technology and technique are most mature, and 90% in conventional household refrigerator belongs to this
Type；This paper's chooses to install gas compressor of the system towards crank-linkage type refrigerator.
When crank-linkage type freezer compressor operates, piston is in cylinder internal pressure contraction cryogen, and high-temperature high-pressure refrigerant is from gas
Cylinder exit directed toward condenser.When piston operation to top dead centre (the top land position farthest in crankshaft rotation center), it is
The gap for guaranteeing piston end surface and valve board assembly, eliminates the margin of tolerance of each components, chooses certain thickness valve plate gasket
It is just very crucial.Valve plate gasket is excessively thin, and piston directly hits valve board assembly, generates noise and leads to damage of components；Blocked up meeting
Decline compressor refrigerating capacity, influences compressor COP value.Therefore, in compressor arrangement design cylinder face and valve board assembly it
Between be mounted with valve plate gasket.Exist since the gap width in cylinder face and valve board assembly is uncontrollable uncertain: uncertainty was both
Depend on the machining accuracy of part, also the consistency of restricted assembly；The solution that assembly technology provides: piston operation is surveyed online
Gap width when to top dead centre between piston end surface and cylinder face selects the valve plate gasket of suitable thickness to match above-mentioned " gap
Value ", make valve plate spacer thickness-" gap width "+" design reserved 50 μm " difference uncertainty ∈ (0,10] μm, to eliminate
The uncontrollable uncertain negative effect of " gap width " to compressor quality.For example, XXXX type compressor assembling line, provides thickness
The valve plate gasket group of 0.21~0.52mm of range, each one grade of decimillimeter (0.01mm, 10 μm) are spent, valve plate gasket group adds up to 32 grades；
Uncertain " gap width " in cylinder face and valve board assembly matches amendment by the valve plate gasket of 32 grades of different-thickness ----{ valve plate
Spacer thickness-" gap width " } ∈ (0,10] μm.
The traditional handicraft of gasket assembly station is using general measurer manual measurement, the shift value of artificial calculated gap；Root
According to the shift value in gap, certain grade of thickness gasket (" thickness "-" gap width " > 0) closest to the shift value is selected, selected by pick-and-place
The gasket selected completes the assembling of gasket；Conventional method low precision, large labor intensity, low efficiency, error rate are high；Urgently exploitation is complete
Automatic highly reliable High Availabitity chooses to install system.It must be noted that the high precision displacement measuring technique that gasket assembly station is related to has maturation
Complete commercial prod:
The design of Wang Miao, Mu Rongsheng (Nanjing Pride Technology Co., Ltd.) High Efficiency and Energy Saving Compressor top dead-centre measuring machine with
Information-based, 2012,41 (19): 91-99 using [J] Chinese manufacturing.
Www.keyence.com, high accuracy number touch sensor GT2-100 series of user handbook, 2014.
Oneself above-mentioned product based on grating scale pulse technique succeed application on freezer compressor assembly line, measurement essence
1 μm of degree, measurement rate 6S, meet assembly line requirement.Currently, the valve plate gasket assembly station problem is mostly derived from gasket
Choosing pad picks and places Shortcomings in material and package technique, and under the assembly beat of assembly line, either gasket selects pad, picks and places material ring
The labor intensity and error rate of labor intensity and error rate or gasket the assembling link of section, it is barely satisfactory to have much room for improvement.This
Outside, valve plate gasket chooses to install the integrated level of system itself, and the integrated level with ERP system, also to be improved.Gasket and gasket dress
With the gasket design that station is related to, displacement measuring technology selects pad technology, picks and places material technology and package technique is more representational knows
It is as follows to know property right Summary on research results:
Patent of invention " gasket seal of refrigerating compressor " (ZL95108044.X), propose by metal substrate or sandwich layer and
Gasket seal is made in elastic coating adhered thereto, is formed by inversely limiting the position of expansion with load preferable
Sealing.
Patent of invention " spacer thickness measuring instrument " (ZL200410066022.4) proposes by bottom measuring table and is located at
The clamping plate shaped measuring head that measuring pressure plate above measuring table is constituted, measuring table is axial movement member, the survey with amesdial
The axis of head linkage moves measuring staff and is arranged along the axial direction of measuring pressure plate, and axis moves measuring staff using measuring table as sensitive face, and bottom end face stretches to
Measuring table.
Patent of invention " valve clearance adjusts gasket apolegamy measuring instrument and gasket matching method "
(ZL201510942101.5), it proposes that measuring instrument is used for gasket between camshaft and valve lifter and matches, passes through measuring mechanism and mark
Quasi- part, respectively to cylinder cap camshaft spindle hole bottom margin to valve lifter top distance and radius of cam base-circle and cam main shaft
The semi-automatic measuring of semidiameter calculates spacer thickness between each cam of camshaft and valve lifter.
Patent of invention " a kind of gasket assemble mechanism " (ZL201210258364.0) proposes that gasket assemble mechanism includes
The sliding rail of upper and lower two horizontal cross configuration, the first sliding rail are fixed on pedestal, and the second sliding rail is mounted on first by sliding block and slides
Rail；Double sided slider bar mobile mechanism pushes gasket to enter in the element groove of installation space.
Patent of invention " a kind of gasket be automatically separated feeding mechanism " (CN201610744707.2), propose a kind of gasket from
Dynamic separation feeding mechanism, including bracket, guide rod, clump weight, guide sleeve, slide table frock, pusher cylinder and pedestal, bracket are equipped with
Guide rod, clump weight and guide sleeve；Guide rod is fixed on bracket, is arranged with clump weight and guide sleeve on guide rod, and clump weight will be to
Separation gasket is pressed on slide table frock, and guide sleeve lower end sets an opening, and height is slightly above monolithic spacer thickness, limits other gaskets
Movement.
It is above-mentioned to benefit our pursuits, the production including gasket seal, detector for displacement measuring and building machine for gasket assembly process
The special equipment of structure, gasket matching method and gasket assembly；It is displacement measuring technology in gasket assembly, the choosing pad of gasket takes
The summary of blowing and package technique research achievement.There is mature solution in view of the high precision displacement measuring technique in gasket assembly process
Certainly scheme, and the choosing pad of gasket, pick-and-place material and package technique Shortcomings: gasket choosing pad, pick-and-place are expected and the labour of assembling link
Intensity and error rate have to be reduced, and gasket chooses to install system itself and to be improved with the integrated level of ERP system.Herein for pad
Defect in piece choosing pad, pick-and-place material and package technique, proposing that improved crank-linkage type freezer compressor valve plate gasket chooses to install is
System and method.The exploration of relevant knowledge property right achievement has reference value, but there are still limitations for achievement.Therefore, it is necessary to existing
On the basis of achievement, make further innovative design.
Summary of the invention
The purpose of the present invention is overcome the deficiencies of the prior art and provide a kind of crank-linkage type freezer compressor valve plate gasket
Choose to install system and method.
The system that chooses to install of crank-linkage type freezer compressor valve plate gasket picks and places material assembling control by the choosing pad of valve plate gasket
Device, the stepping box of valve plate gasket, the pick-and-place material assembling device of valve plate gasket, cylinder face and the measurement in valve board assembly gap fill
It sets, ERP management system composition；Choosing pad picks and places CPU 224XP module, the switching value that material assembling control device includes 200 PLC of S7
The mould entry/exit and open the included communication module of entry/exit module, CPU224XP, power supply that output EM233 module, CPU224XP are carried
NES-75-24 module, touch screen MT8070iH module；The port 1 of communication module accesses ERP through touch screen MT8070iH module
Management system, the survey of pick-and-place the material assembling device, cylinder face and valve board assembly gap of the port 2 and valve plate gasket of communication module
Device is measured to be connected；Mould entry/exit and the DI for opening entry/exit module1Mouth is connected with the pick-and-place material assembling device of valve plate gasket；
The gasket stepping box of valve plate gasket includes the 1st gasket box, the 2nd gasket box, is sequentially incremented to m gasket box by column,
It is sequentially incremented to n-th × m gasket box line by line；1st output switch parameter port D of output switch parameter EM233 module1211With the 1st pad
Film magazine be connected, the 2nd output switch parameter port D1212It is connected with the 2nd gasket box, is sequentially incremented to n-th × m output switch parameter one by one
Port D12nmIt is connected with n-th × m gasket box, n >=1, m >=1；
Touch screen MT8070iH module downloads the production plan day scheduling of ERP management system, valve plate gasket demand inventory, raw
At the specifications parameter of valve plate gasket stepping box；Choosing pad picks and places the port 2 that material assembling control device passes through communication module, reads in and surveys
Cylinder face and the valve board assembly gap width of device output are measured, selection matches the valve plate gasket of above-mentioned gap width thickness；Valve plate gasket
Pick-and-place material assembling device obtain selected valve plate gasket from the stepping box of valve plate gasket, complete the assembling of valve plate gasket；
Choosing pad picks and places the assembly that material assembling control device verifies valve plate gasket；
Optimal gap width=0 of theory between crank-linkage type piston for refrigerator compressor top dead centre and valve board assembly, considers
To parts machining the installation of tolerance and valve board assembly and work when stress deformation, when design reserved 5 decimillimeters between the two
Gap；By choosing certain thickness valve plate gasket, make parts machining tolerance and valve board assembly that the uncertainty of deformation to be installed
min；The excessively thin piston slap valve board assembly of valve plate gasket generates noise and leads to damage of components；It is blocked up to make compressor refrigeration
Amount decline, influences compressor COP value；Measuring device detector gap L=L1+L3+L4-L2+5, wherein L1: crankshaft eccentric shaft half
Diameter, L2: crankshaft center is to crankcase cylinder identity distance from L3: connecting rod two hole center distance is from L4: piston pin hole center to piston end
Identity distance is from A: cylinder face, B: piston end surface；By taking XXXX type compressor as an example, displacement unit takes decimillimeter, the thickness of valve plate gasket
Thickness_gasket=INT (L)+1, i.e. fit clearance L be rounded, then plus 1 sum as valve plate spacer thickness stepping according to
According to；If detector gap exceeds the compensation range of gasket design, there are quality problems, offline reworked processings for compressor machine core.
The gasket stepping box includes being incremented to m column by column by column, only padding by n × m that row is incremented to line n line by line
Film magazine is ordered into n-th × m gasket box from the 1st gasket box, the gasket of a certain same thickness, n is placed in every gasket box
>=1, m >=1；A green indicator light is installed in the top center of gasket box, once choose matching cylinder face and valve board assembly gap
Valve plate gasket, the gasket box green indicator light which is placed lights, and instruction takes valve plate pad from target pad film magazine
Piece；The circuit of 1st gasket box includes the solid-state relay SSR of IRFP150 type211, green indicator light L211, power supply, SSR211Output
End 1 is through power supply, green indicator light L211With SSR211Output end 2 is connected, and constitutes closed circuit, SSR211Control terminal is defeated with switching value
1st output switch parameter port D of EM233 module out1211It is connected；Control SSR211On/off, green indicator light L of equal value211/ lose
Electricity, green indicator light L211/ power loss corresponds to lighting for indicator light/extinguish；The circuit class of remaining (n × m) -1 gasket box
Together.
The pick-and-place material assembling device include X axis servo motor sensor, cylinder decline level sensor, suction hole,
Fibre optical sensor, valve plate gasket box, picks and places the linear mould group connection of material cylinder, the linear mould group screw rod of XY, XY at linear mould group mounting seat
Axis device, working plate, valve plate gasket, the 1st one-way throttle valve, the 2nd one-way throttle valve, pick and place material head, air intake duct at valve board assembly, take
The gas source of blowing assembling device pneumatic unit, pressure reducing valve, pressure gauge, oil sprayer, two-position-five-way solenoid valve, picks and places material at filter
Solenoid valve, vacuum generator, gas vent, pressure sensor, sucker；
X axis servo motor, Y-axis servo motor, linear mould group mounting seat, the linear mould group screw rod of XY, the linear mould of XY
Group shaft coupling constitutes the linear mould group of X, Y-motion；Measuring device exports the fit clearance L in cylinder face and valve board assembly, choosing
Pad picks and places the thickness thickness_gasket that material assembling control device calculates valve plate gasket, and driving picks and places material head to valve plate gasket
Case specifies the gasket box of class；1st one-way throttle valve, the 2nd one-way throttle valve, cylinder rise demotion under level sensor, cylinder and pass
Sensor, air intake duct, picks and places material cylinder in the case where choosing pads and picks and places material assembling control device control at suction hole, and driving picks and places the liter of material head
Drop movement, i.e. Z-motion are completed to draw the positioning of valve plate gasket desired position；The pick-and-place material assembling device of valve plate gasket is attached
If the infrared transmitter of a directive valve plate gasket, fibre optical sensor receives the infrared external reflection light of valve plate gasket；Valve plate gasket is released
When putting in place, whether the output valve of mould entry/exit and the DI1 mouth input optical fibre sensor for opening entry/exit module, detection valve plate gasket leaks
Dress；Driving picks and places the mechanism of material head to preset discharge position, release valve plate gasket, the gasket with pick-and-place material head to specified class
Box, absorption valve plate gasket are same；
Gas source and pneumatic triple piece: filter, pressure reducing valve, oil sprayer control the pressure of pressure gauge in 1Mpa；Two-position five-way
When solenoid valve power loss, compressed air enters pick-and-place material cylinder through the 2nd one-way throttle valve, and cylinder piston is located at upper, i.e. pick-and-place and expects
Head is in upper；Material solenoid valve power loss is picked and placed, compressed air can not generate suction by vacuum generator；Two-position-five-way solenoid valve
After obtaining electric commutation, compressed air enters pick-and-place material cylinder through the 1st one-way throttle valve, and it is electric to pick and place material for pusher cylinder piston to bottom
Magnet valve obtains electric, and compressed air generates suction through vacuum generator, and pressure sensor detects that pressure signal changes, and sucker draws valve
Plate gasket；Power loss, pick-and-place material head move to upper, completion feeding action to five-way electromagnetic valve again；Pick and place the blowing action of material head
It is similar with feeding action；Measuring device model base grace GT2/GT, pressure sensor model are base grace AP-C30, fibre optical sensor
Model base grace FS-N40 reflection-type.
The process that the valve plate gasket chooses to install method includes preparation process that valve plate gasket chooses to install method, the choosing of valve plate gasket
The operational process of dress method；
Choose to install the preparation process of method
Download the scheduling of production plan day and the valve plate gasket demand inventory of ERP
Generate specifications parameter, the installation stepping box of stepping box
Set the discharge position of valve plate gasket；
Choose to install the operational process of method
1. the gap width L in measuring device output cylinder face and valve board assembly
If L ∈ [205,515] μm
2. the thickness thickness_gasket=INT (L)+1 of valve plate gasket turns
Else freezer compressor is unqualified, exits assembly line, turns 4.
2. the gasket box green indicator light of thickness_gasket is lighted
If picks and places material assembling device failure
Assembling valve plate gasket manually is picked and placed from the bright gasket box of green indicator light, is turned 4.
Else picks and places material assembling device and picks and places assembling valve plate gasket
3. mould entry/exit and the DI for opening entry/exit module1Mouth input optical fibre sensor output value
If valve plate gasket neglected loading
Compressor exits assembly line, turns 4.
Else starts next compressor and enters valve plate gasket assembly station
4. returning 1..
Compared with the background technology, the present invention, it has the beneficial effect that
Valve plate gasket chooses to install system automation, reduces the labor intensity and error rate of assembly station, improves production effect
Rate and compressor quality；It chooses to install system and ERP is integrated, system has scalability；The setting green instruction of valve plate gasket stepping box
Lamp, pick and place material assembling device failure when, can auxiliary spacer assembly station manually choose to install, maintain the operation of assembly line, improve
The availability of assembly line；The neglected loading of valve plate gasket detects, and improves the reliability of system.
Detailed description of the invention
Fig. 1 (a) is the functional block diagram that valve plate gasket chooses to install system；
Fig. 1 (b) is the schematic diagram that crank-linkage type freezer compressor installs valve plate gasket additional；
Fig. 2 (a) is the structure chart of valve plate gasket stepping box；
Fig. 2 (b) is the circuit diagram of valve plate gasket stepping box；
Fig. 3 (a) is the perspective view that valve plate gasket picks and places material assembling device；
Fig. 3 (b) is the partial perspective view that valve plate gasket picks and places material assembling device；
Fig. 3 (c) is the pneumatic unit schematic diagram that valve plate gasket picks and places material assembling device；
Fig. 4 (a) is the flow chart that valve plate gasket chooses to install method；
Fig. 4 (b) is the preparation flow chart that valve plate gasket chooses to install method；
Fig. 4 (c) is the operational flow diagram that valve plate gasket chooses to install method.
Specific embodiment
As shown in Fig. 1 (a), Fig. 1 (b), crank-linkage type freezer compressor valve plate gasket chooses to install system by valve plate gasket
Choosing pad pick and place material assembling control device 100, the stepping box 200 of valve plate gasket, valve plate gasket pick-and-place material assembling device 400,
The measuring device 500 in cylinder face and valve board assembly gap, ERP management system 600 form；Choosing pad picks and places material assembling control device
100 enter including the included mould of the CPU 224XP module 110 of S7 200PLC, output switch parameter EM233 module 120, CPU224XP/
Out and open entry/exit module 130, communication module 160, the power supply NES-75-24 module 170, touch screen that CPU224XP is carried
MT8070iH module 180；The port 1 of communication module 160 accesses ERP management system through touch screen MT8070iH module 180
600, assembling device 400, cylinder face and valve board assembly gap are expected in the pick-and-place of the port 2 and valve plate gasket of communication module 160
Measuring device 500 is connected；Mould entry/exit and the DI for opening entry/exit module 1301400 phase of pick-and-place material assembling device of mouth and valve plate gasket
Even；
The gasket stepping box 200 of valve plate gasket includes the 1st gasket box 211, the 2nd gasket box 212, is sequentially incremented to the by column
M gasket box 21m is sequentially incremented to n-th × m gasket box 2nm line by line；1st switching value of output switch parameter EM233 module 120 is defeated
Exit port D1211It is connected with the 1st gasket box 211, the 2nd output switch parameter port D1212It is connected with the 2nd gasket box 212, one by one sequentially
It is incremented to n-th × m output switch parameter port D12nmIt is connected with n-th × m gasket box 2nm, n >=1, m >=1；
Touch screen MT8070iH module 180 downloads the production plan day scheduling of ERP management system 600, valve plate gasket demand
Inventory generates the specifications parameter of valve plate gasket stepping box 200；Choosing pad picks and places material assembling control device 100 and passes through communication module 160
Port 2, read in the cylinder face and valve board assembly gap width that measuring device 500 exports, selection matches above-mentioned gap width thickness
Valve plate gasket；The pick-and-place material assembling device 400 of valve plate gasket obtains selected valve plate from the stepping box 200 of valve plate gasket
Gasket completes the assembling of valve plate gasket；Choosing pad picks and places the assembly that material assembling control device 100 verifies valve plate gasket；
Crank-linkage type freezer compressor include crankcase 9, crankshaft 8, crank connecting link 7, valve plate gasket 6, valve board assembly 5,
Crankcase gas cylinder holes 4, piston 3, stator 2, rotor 1, A are cylinder faces, and B is piston end surface；After compressor is powered, the stator of motor
Coil generates rotating excitation field and drives rotor motion, then successively band dynamic crankshaft 8 rotates, and is converted into piston 3 in song by crank connecting link 7
Reciprocating motion in 9 cylinder-bore of axle box；The cavity of piston 3 and cylinder composition periodically expands and reduces；When piston 3 stops from upper
During point moves to lower dead center, cavity expands, and the gas expansion in cylinder, pressure reduction simultaneously sucks gas；When piston 3 from
Lower dead center moves to during top dead centre, and cavity reduces, and gas is compressed, and simultaneously gas is discharged in pressure rise；Piston 3 reciprocal one
It is secondary, it is sequentially completed four expansion, air-breathing, compression, exhaust strokes, collectively referred to as a working cycles；So in cycles, system is pushed
Cryogen flows in systems, completes and external heat exchange reaches refrigeration effect；
Optimal gap width=0 of theory between crank-linkage type piston for refrigerator compressor top dead centre and valve board assembly 5, considers
To parts machining the installation of tolerance and valve board assembly 5 and work when stress deformation, when design reserved 5 decimillimeters between the two
Gap；By choosing certain thickness valve plate gasket 6, make parts machining tolerance and valve board assembly 5 that the uncertain of deformation to be installed
Property min；The excessively thin piston slap valve board assembly of valve plate gasket 6 generates noise and leads to damage of components；It is blocked up to make compression mechanism
Cooling capacity decline, influences compressor COP value；500 detector gap L=L1+L3+L4-L2+5 of measuring device, wherein L1: crankshaft eccentric
Axis radius, L2: crankshaft center is to crankcase cylinder identity distance from L3: connecting rod two hole center distance is from L4: piston pin hole center to work
Fill in end face distance, A: cylinder face, B: piston end surface；By taking XXXX type compressor as an example, displacement unit takes decimillimeter, the thickness of valve plate gasket
Spend thickness_gasket=INT (L)+1, i.e. fit clearance L is rounded, then plus 1 stepping of the sum as valve plate spacer thickness
Foundation；If detector gap exceeds the compensation range of gasket design, there are quality problems, offline reworked processings for compressor machine core.
Illustrate 1: without loss of generality, the stepping box 200 of valve plate gasket is used for XXXX type compressor assembling line, provides thickness
Spend the valve plate gasket group of 0.21~0.52mm of range, each one grade of decimillimeter (0.01mm, 10 μm), totally 32 grades of valve plate gasket；I.e.
N=4 in text, m=8.Measuring device 500 in view of cylinder face and valve board assembly gap is mature complete sets of products, and ERP belongs to public
Knowledge, therefore be distinguish in figure with dotted line mark, it is only referred in text and is not unfolded to discuss.
As shown in Fig. 2 (a), Fig. 2 (b), the gasket stepping box 200 of valve plate gasket include by column be incremented to by column m column, by
Row is incremented to n × m gasket box of line n line by line, i.e., is ordered into gasket box 2nm from gasket box 211, places in every gasket box
The gasket of a certain same thickness, n >=1, m >=1；A green indicator light is installed in the top center of gasket box, once choose matching
The valve plate gasket in cylinder face and valve board assembly gap, the gasket box green indicator light which is placed are lighted, instruction from
Valve plate gasket is taken in target pad film magazine；The circuit of 1st gasket box 211 includes the solid-state relay SSR of IRFP150 type211, green
Indicator light L211, power supply, SSR211Output end 1 is through power supply, green indicator light L211With SSR211Output end 2 is connected, and constitutes closure electricity
Road, SSR2111st output switch parameter port D of control terminal and output switch parameter EM233 module 1201211It is connected；Control SSR211
On/off, green indicator light L of equal value211/ power loss, green indicator light L211/ power loss corresponds to lighting for indicator light/extinguish；Its
The circuit of remaining (n × m) -1 gasket box is similar.
Illustrate 2: when picking and placing material 400 operational failure of assembling device, green indicator light can auxiliary spacer assembly station it is artificial
It chooses to install, improves the availability of assembly line.Green indicator light simultaneously also helps gasket assembler and finds to pick and place material assembling device
400 failure improves the reliability of assembly line.
As shown in Fig. 3 (a), Fig. 3 (b), Fig. 3 (c), the pick-and-place material assembling device 400 of valve plate gasket includes X axis servo electricity
Machine 301, Y-axis servo motor 302, pressure sensor 303, vacuum generator 304, cylinder rise under level sensor 305, cylinder
Demotion sensor 306, fibre optical sensor 308, linear mould group mounting seat 309, valve plate gasket box 310, picks and places suction hole 307
Expect cylinder 311, the linear mould group screw rod 312 of XY, the linear mould group shaft coupling 313 of XY, working plate 401, valve board assembly 402, valve plate pad
Piece 403, the 2nd one-way throttle valve 405, picks and places material head 409, air intake duct 410 at the 1st one-way throttle valve 404, picks and places material assembling device
Gas source 341, filter 342, pressure reducing valve 343, pressure gauge 344, the oil sprayer 345, two-position-five-way solenoid valve of 400 pneumatic units
346, material solenoid valve 347, vacuum generator 304, gas vent 432, pressure sensor 303, sucker 434 are picked and placed；
X axis servo motor 301, Y-axis servo motor 302, linear mould group mounting seat 309, the linear mould group screw rod of XY
312, the linear mould group shaft coupling 313 of XY constitutes the linear mould group of X, Y-motion；Measuring device 500 exports cylinder face and valve plate
The fit clearance L of component, choosing pad pick and place the thickness thickness_gasket that material assembling control device 100 calculates valve plate gasket,
Driving picks and places the gasket box that material head 409 specifies class to valve plate gasket box 310；1st one-way throttle valve 404, the 2nd one-way throttle valve
405, cylinder rises level sensor 305, cylinder decline level sensor 306, suction hole 307, air intake duct 410, picks and places material cylinder 311
In the case where choosing pad pick-and-place material assembling control device 100 controls, the lifting action of pick-and-place material head 409, i.e. Z-motion are driven, is completed
Draw the positioning of 403 desired position of valve plate gasket；The pick-and-place material assembling device 400 of valve plate gasket sets up a directive valve plate gasket
403 infrared transmitter, fibre optical sensor 308 receive the infrared external reflection light of valve plate gasket 403；When the release of valve plate gasket is in place,
Whether the output valve of mould entry/exit and the DI1 mouth input optical fibre sensor 308 for opening entry/exit module 130, detection valve plate gasket 403 leak
Dress；Driving pick and place material head 409 to preset discharge position, discharge the mechanism of valve plate gasket 403, and pick and place material head 409 to specified
Gasket box, the absorption valve plate gasket 403 of class are similar；
Gas source 341 and pneumatic triple piece: filter 342, pressure reducing valve 343, oil sprayer 345 control the pressure of pressure gauge 344
In 1Mpa；When 346 power loss of two-position-five-way solenoid valve, compressed air enters through the 2nd one-way throttle valve 405 picks and places material cylinder 311, gas
The cylinder piston is located at upper, i.e. pick-and-place material head 409 and is in upper；Material 347 power loss of solenoid valve is picked and placed, compressed air can not pass through vacuum
Generator 304 generates suction；After two-position-five-way solenoid valve 346 obtains electric commutation, compressed air enters through the 1st one-way throttle valve 404
Material cylinder 311 is picked and placed, pusher cylinder piston to bottom, it is electric that pick-and-place expects that solenoid valve 347 obtains, and compressed air is through vacuum generator 304
Suction is generated, pressure sensor 303 detects that pressure signal changes, and sucker 434 draws valve plate gasket 403；Two-position five-way electromagnetism
Power loss, pick-and-place material head 409 move to upper, completion feeding action to valve 346 again；Pick and place the blowing action and feeding of material head 409
It acts similar；500 model base grace GT2/GT of measuring device, 303 model base grace AP-C30 of pressure sensor, fibre optical sensor
308 model base grace FS-N40 reflection-types.
Illustrate 3: valve plate gasket is black low-density polyethylene material, and valve board assembly is steel mirror surface, and the two is to infrared light
Reflectivity difference it is big；Fibre optical sensor reflects the strength difference of infrared light by receiving valve plate gasket, and detection differentiates valve plate pad
Piece whether neglected loading.Valve plate gasket neglected loading is little Gai Shuai Shi part, but is influenced on compressor quality very big；Not only influence compressor production
Producer itself reputation, and damage the experience of refrigerator complete system plant and user.
As shown in Fig. 4 (a), Fig. 4 (b), Fig. 4 (c), crank-linkage type freezer compressor valve plate gasket chooses to install method flow
Preparation process including choosing to install method, chooses to install the operational process of method；
Choose to install the preparation process of method
Download the scheduling of production plan day and the valve plate gasket demand inventory of ERP 600
Generate specifications parameter, the installation stepping box of stepping box 200
Set the discharge position of valve plate gasket 430；
Choose to install the operational process of method
1. the gap width L in the output of measuring device 500 cylinder face and valve board assembly
If L ∈ [205,515] μm
2. the thickness thickness_gasket=INT (L)+1 of valve plate gasket turns
Else freezer compressor is unqualified, exits assembly line, turns 4.
2. the gasket box green indicator light of thickness_gasket is lighted
If picks and places material 400 failure of assembling device
Assembling valve plate gasket manually is picked and placed from the bright gasket box of green indicator light, is turned 4.
Else picks and places material assembling device 400 and picks and places assembling valve plate gasket
3. mould entry/exit and the DI for opening entry/exit module 1301308 output valve of mouth input optical fibre sensor
403 neglected loading of if valve plate gasket
Compressor exits assembly line, turns 4.
Else starts next compressor and enters valve plate gasket assembly station
4. returning 1..
Claims (4)
1. a kind of crank-linkage type freezer compressor valve plate gasket chooses to install system, which is characterized in that system is by valve plate gasket
Choosing pad picks and places the pick-and-place material assembling device of material assembling control device (100), the stepping box (200) of valve plate gasket, valve plate gasket
(400), the measuring device (500) in cylinder face and valve board assembly gap, ERP management system (600) form；Choosing pad picks and places material assembling
Control device (100) include the CPU 224XP module (110) of 200 PLC of S7, output switch parameter EM233 module (120),
The CPU224XP included mould entry/exit communication module (160) included with entry/exit module (130), CPU224XP is opened, power supply NES-
75-24 module (170), touch screen MT8070iH module (180)；The port 1 of communication module (160) is through touch screen MT8070iH
Module (180) accesses ERP management system (600), and the port 2 of communication module (160) and the pick-and-place material of valve plate gasket are assembled and filled
Set (400), cylinder face is connected with the measuring device (500) in valve board assembly gap；Mould entry/exit and open entry/exit module (130)
DI1Mouth is connected with the pick-and-place material assembling device (400) of valve plate gasket；
The gasket stepping box (200) of valve plate gasket includes the 1st gasket box (211), the 2nd gasket box (212), is sequentially incremented to by column
M gasket box (21m) is sequentially incremented to n-th × m gasket box (2nm) line by line；The 1st of output switch parameter EM233 module (120)
Output switch parameter port D1211It is connected with the 1st gasket box (211), the 2nd output switch parameter port D1212With the 2nd gasket box (212) phase
Even, it is sequentially incremented to n-th × m output switch parameter port D one by one12nmIt is connected with n-th × m gasket box (2nm), n >=1, m >=1；
Touch screen MT8070iH module (180) downloads the production plan day scheduling of ERP management system (600), valve plate gasket demand
Inventory generates the specifications parameter of valve plate gasket stepping box (200)；Choosing pad picks and places material assembling control device (100) and passes through communication mould
The port 2 of block (160) reads in the cylinder face and valve board assembly gap width of measuring device (500) output, above-mentioned of selection matching
The valve plate gasket of gap value thickness；The pick-and-place material assembling device (400) of valve plate gasket is obtained from the stepping box (200) of valve plate gasket
Selected valve plate gasket completes the assembling of valve plate gasket；Choosing pad picks and places material assembling control device (100) and verifies valve plate gasket
Assembly；
Optimal gap width=0 of theory between crank-linkage type piston for refrigerator compressor top dead centre and valve board assembly, it is contemplated that zero
The tolerance and valve board assembly of component processing are installed and stress deformation when work, and when design has reserved 5 decimillimeter gaps between the two；
By choosing certain thickness valve plate gasket, make parts machining tolerance and valve board assembly that the uncertain min of deformation to be installed；Valve
The excessively thin piston slap valve board assembly of plate gasket generates noise and leads to damage of components；It is blocked up compressor refrigerating capacity to be made to decline,
Influence compressor COP value；Measuring device (500) detector gap L=L1+L3+L4-L2+5, wherein L1: crankshaft eccentric shaft radius,
L2: crankshaft center is to crankcase cylinder identity distance from L3: connecting rod two hole center distance is from L4: piston pin hole center to piston end surface away from
From A: cylinder face, B: piston end surface；Displacement unit takes decimillimeter, and the thickness thickness_gasket=INT (L) of valve plate gasket+
1, i.e. fit clearance L are rounded, then plus 1 stepping foundation of the sum as valve plate spacer thickness；If detector gap exceeds gasket design
Compensation range, there are quality problems, offline reworked processings for compressor machine core.
2. according to claim 1 choose to install system, which is characterized in that the gasket stepping box (200) include by column by
Column are incremented to m column, are incremented to n × m gasket box of line n line by line by row, i.e., are ordered into gasket box from gasket box (211)
(2nm), the interior gasket for placing a certain same thickness of every gasket box, n >=1, m >=1；The top center installation one of gasket box is green
Color indicator light, once choose the valve plate gasket in matching cylinder face and valve board assembly gap, the gasket box which is placed
Green indicator light is lighted, and instruction takes valve plate gasket from target pad film magazine；The circuit of 1st gasket box (211) includes IRFP150 type
Solid-state relay SSR211, green indicator light L211, power supply, SSR211Output end 1 is through power supply, green indicator light L211With SSR211
Output end 2 is connected, and constitutes closed circuit, SSR2111st output switch parameter of control terminal and output switch parameter EM233 module (120)
Port D1211It is connected；Control SSR211On/off, green indicator light L of equal value211/ power loss, green indicator light L211/ power loss pair
Answer lighting/extinguishing for indicator light；The circuit of remaining (n × m) -1 gasket box is similar.
3. according to claim 1 choose to install system, which is characterized in that the pick-and-place material assembling device (400) includes X-axis
The raise-position on servo motor (301), Y-axis servo motor (302), pressure sensor (303), vacuum generator (304), cylinder
Sensor (305), cylinder decline level sensor (306), suction hole (307), fibre optical sensor (308), linear mould group install bottom
Seat (309), valve plate gasket box (310) pick and place material cylinder (311), the linear mould group screw rod (312) of XY, the linear mould group shaft coupling of XY
(313), working plate (401), valve board assembly (402), valve plate gasket (403), the 1st one-way throttle valve (404), the 2nd one-way throttle
Valve (405) picks and places material head (409), air intake duct (410), picks and places the gas source (341), filtering of material assembling device (400) pneumatic unit
Device (342), pressure gauge (344), oil sprayer (345), two-position-five-way solenoid valve (346), picks and places material solenoid valve at pressure reducing valve (343)
(347), gas vent (432), sucker (434)；
X axis servo motor (301), Y-axis servo motor (302), linear mould group mounting seat (309), the linear mould group silk of XY
The linear mould group shaft coupling (313) of bar (312), XY constitutes the linear mould group of X, Y-motion；Measuring device (500) exports cylinder
The fit clearance L in face and valve board assembly, choosing pad pick and place the thickness that material assembling control device (100) calculates valve plate gasket
Thickness_gasket, driving pick and place the gasket box that material head (409) to valve plate gasket box (310) specify class；1st unidirectional section
Flow valve (404), the 2nd one-way throttle valve (405), cylinder rising level sensor (305), cylinder decline level sensor (306), suction
Hole (307), air intake duct (410) pick and place material cylinder (311) in the case where choosing pads and picks and places material assembling control device (100) control, and driving takes
The lifting action of discharge head (409), i.e. Z-motion are completed to draw the positioning of valve plate gasket (403) desired position；Valve plate pad
The pick-and-place material assembling device (400) of piece sets up the infrared transmitter of a directive valve plate gasket (403), fibre optical sensor (308)
Receive the infrared external reflection light of valve plate gasket (403)；When the release of valve plate gasket is in place, mould entry/exit and entry/exit module (130) is opened
The output valve of DI1 mouthfuls of input optical fibre sensors (308), detection valve plate gasket (403) whether neglected loading；Driving picks and places material head (409)
To preset discharge position, the mechanism of release valve plate gasket (403), the gasket box of class is extremely specified with pick-and-place material head (409), is inhaled
Take valve plate gasket (403) similar；
Gas source (341) and pneumatic triple piece: filter (342), pressure reducing valve (343), oil sprayer (345) control pressure gauge (344)
Pressure in 1Mpa；When two-position-five-way solenoid valve (346) power loss, compressed air enters through the 2nd one-way throttle valve (405) picks and places material
Cylinder (311), cylinder piston are located at upper, i.e. pick-and-place material head (409) and are in upper；Pick and place material solenoid valve (347) power loss, compression
Air can not generate suction by vacuum generator (304)；After two-position-five-way solenoid valve (346) obtains electric commutation, compressed air warp
1st one-way throttle valve (404), which enters, picks and places material cylinder (311), pusher cylinder piston to bottom, pick-and-place material solenoid valve (347)
Electricity, compressed air generate suction through vacuum generator (304), and pressure sensor (303) detects that pressure signal changes, sucker
(434) valve plate gasket (403) are drawn；Two-position-five-way solenoid valve (346) power loss again, pick and place material head (409) move to it is upper, it is complete
At feeding action；Blowing action and the feeding action for picking and placing material head (409) are similar；Measuring device (500) model base grace GT2/
GT, pressure sensor (303) model base grace AP-C30, fibre optical sensor (308) model base grace FS-N40 reflection-type.
4. a kind of choose to install method using choose to install system as described in claim 1, which is characterized in that valve plate gasket chooses to install method
Process includes the preparation process that valve plate gasket chooses to install method, and valve plate gasket chooses to install the operational process of method；
Choose to install the preparation process of method
Download the scheduling of production plan day and the valve plate gasket demand inventory of ERP (600)
Generate specifications parameter, the installation stepping box of stepping box (200)
Set the discharge position of valve plate gasket (430)；
Choose to install the operational process of method
1. the gap width L in measuring device (500) output cylinder face and valve board assembly
If L ∈ [205,515] μm
2. the thickness thickness_gasket=INT (L)+1 of valve plate gasket turns
Else freezer compressor is unqualified, exits assembly line, turns 4.
2. the gasket box green indicator light of thickness_gasket is lighted
If picks and places material assembling device (400) failure
Assembling valve plate gasket manually is picked and placed from the bright gasket box of green indicator light, is turned 4.
Else picks and places material assembling device (400) and picks and places assembling valve plate gasket
3. mould entry/exit and the DI for opening entry/exit module (130)1Mouth input optical fibre sensor (308) output valve
If valve plate gasket (403) neglected loading
Compressor exits assembly line, turns 4.
Else starts next compressor and enters valve plate gasket assembly station
4. returning 1..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910345184.8A CN110206711B (en) | 2019-04-26 | 2019-04-26 | System and method for selectively mounting valve plate gasket of crank connecting rod type refrigerator compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910345184.8A CN110206711B (en) | 2019-04-26 | 2019-04-26 | System and method for selectively mounting valve plate gasket of crank connecting rod type refrigerator compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110206711A true CN110206711A (en) | 2019-09-06 |
| CN110206711B CN110206711B (en) | 2020-06-09 |
Family
ID=67786417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910345184.8A Expired - Fee Related CN110206711B (en) | 2019-04-26 | 2019-04-26 | System and method for selectively mounting valve plate gasket of crank connecting rod type refrigerator compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110206711B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0333589A2 (en) * | 1988-03-18 | 1989-09-20 | John H. Gordon | Gasket holding and feeding magazine |
| CA2087935A1 (en) * | 1992-02-03 | 1993-08-04 | James D. Ashmore | Gauge for compressible medium |
| CN1624415A (en) * | 2004-12-09 | 2005-06-08 | 合肥工业大学 | Spacer thickness measuring instrument |
| CN101915533A (en) * | 2010-07-23 | 2010-12-15 | 浙江金刚汽车有限公司 | Gasket measuring and matching check tool |
| CN205300553U (en) * | 2015-12-16 | 2016-06-08 | 三门峡中原量仪股份有限公司 | Valve clearance adjusting shim matches measuring apparatu |
| CN106112449A (en) * | 2016-08-28 | 2016-11-16 | 上海贝特威自动化科技有限公司 | A kind of pad is automatically separated feed mechanism |
-
2019
- 2019-04-26 CN CN201910345184.8A patent/CN110206711B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0333589A2 (en) * | 1988-03-18 | 1989-09-20 | John H. Gordon | Gasket holding and feeding magazine |
| CA2087935A1 (en) * | 1992-02-03 | 1993-08-04 | James D. Ashmore | Gauge for compressible medium |
| CN1624415A (en) * | 2004-12-09 | 2005-06-08 | 合肥工业大学 | Spacer thickness measuring instrument |
| CN101915533A (en) * | 2010-07-23 | 2010-12-15 | 浙江金刚汽车有限公司 | Gasket measuring and matching check tool |
| CN205300553U (en) * | 2015-12-16 | 2016-06-08 | 三门峡中原量仪股份有限公司 | Valve clearance adjusting shim matches measuring apparatu |
| CN106112449A (en) * | 2016-08-28 | 2016-11-16 | 上海贝特威自动化科技有限公司 | A kind of pad is automatically separated feed mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110206711B (en) | 2020-06-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111365210B (en) | Efficient supercharging zero-clearance type ionic liquid compressor with accurately adjustable piston stroke | |
| CN105277301B (en) | Freezer compressor production assembly line torque detecting apparatus | |
| CN204941821U (en) | Compressor crank shaft and the compressor with it | |
| CN103162918B (en) | The sealing property detection device of piston ring and piston rod packing and detection method thereof | |
| CN110206711A (en) | Crank-linkage type freezer compressor valve plate gasket chooses to install system and method | |
| CN203035491U (en) | Conchoid air compressor | |
| CN101929462A (en) | Method for assembling pump body of double-cylinder rotary compressor | |
| CN104912770B (en) | Synchronous movement realization based free-piston compressor | |
| CN203688253U (en) | Split Stirling refrigerating machine debugging apparatus | |
| CN202789263U (en) | In-line split type injection pump | |
| CN208366234U (en) | Piston stroke measures tooling in marine diesel | |
| CN103486031B (en) | A kind of rotary double cylinder compressor pump body assembly method | |
| CN208285116U (en) | A kind of bearing arrangement of double-rotor machine | |
| CN201896678U (en) | Forklift liquefied gas engine with electromagnetic type sensor bracket | |
| CN113007081B (en) | Complete balanced high-speed diaphragm compressor capable of realizing monitoring based on industrial internet platform | |
| CN206653168U (en) | A kind of Vehicular air-conditioner compressor front end-plate fixture for processing | |
| CN103573589A (en) | Assembling device special for miniature refrigerating compressor and assembling method of compressor | |
| CN213258039U (en) | Automatic assembling machine for plane bearing | |
| CN216714501U (en) | Check valve structure for engine lubricating system | |
| CN110185600A (en) | A kind of energy-saving natural gas recycling compressor being easily installed | |
| CN205218492U (en) | Bent axle top dead center adjusting device | |
| CN205089619U (en) | Rotary compressor and compressing assembly thereof | |
| CN217685962U (en) | Refrigeration closed device capable of quickly supplementing oil | |
| CN213179829U (en) | Eccentricity detection device for flywheel part sample sealing | |
| CN205779296U (en) | A kind of gear chamber cover of improved structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200609 |