CN208999034U - A kind of airtight test device of simulation pressing - Google Patents

A kind of airtight test device of simulation pressing Download PDF

Info

Publication number
CN208999034U
CN208999034U CN201821633808.3U CN201821633808U CN208999034U CN 208999034 U CN208999034 U CN 208999034U CN 201821633808 U CN201821633808 U CN 201821633808U CN 208999034 U CN208999034 U CN 208999034U
Authority
CN
China
Prior art keywords
pressing module
cylinder
pressing
plate
casing frame
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.)
Active
Application number
CN201821633808.3U
Other languages
Chinese (zh)
Inventor
张百温
彭建芳
李俊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LASTER TECH AUTOMOTIVE (SHANGHAI) Ltd
Original Assignee
LASTER TECH AUTOMOTIVE (SHANGHAI) Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LASTER TECH AUTOMOTIVE (SHANGHAI) Ltd filed Critical LASTER TECH AUTOMOTIVE (SHANGHAI) Ltd
Priority to CN201821633808.3U priority Critical patent/CN208999034U/en
Application granted granted Critical
Publication of CN208999034U publication Critical patent/CN208999034U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

A kind of airtight test device of simulation pressing, including casing frame, press mechanism, pressing module, precise pressure regulating valve, digital pressure transducer, inflationtime relay and dwell time relay;Press mechanism is arranged in the top of casing frame, and press mechanism includes lower air cylinder and cylinder push plate, and the piston end of lower air cylinder is connect straight down and with cylinder push plate;The bottom setting pressing module of casing frame, pressing module are located at the underface of cylinder push plate;Adjusting knob, inflationtime relay and the dwell time relay of the surface setting precise pressure regulating valve of casing frame;Two-way is picked out on precise pressure regulating valve, fluff respectively with digital display pressure device and pressing module connect;Inflationtime relay and dwell time relay are connect with precise pressure regulating valve.Module design corresponding with shape of product will be pressed, press mechanism closely compresses product and pressing module, and good airproof performance, test result is accurate, and computer judges test result and stores data, facilitates retrospect and inquiry.

Description

A kind of airtight test device of simulation pressing
Technical field
The utility model relates to physical testing technical fields, are related to test device for air tightness more particularly to a kind of simulation pressure The airtight test device of conjunction.
Background technique
LED car lamp production line does not do the device of air tightness test at present, needs to meet the air tightness test need of LED car lamp It asks, simulation pressing, and requires test data that can export, can be traced.
Utility model content
The utility model is in view of the above-mentioned problems, provide a kind of airtight test device of simulation pressing.
The purpose of this utility model can be realized by following technical proposals: a kind of airtight test dress of simulation pressing Set, including casing frame, press mechanism, pressing module, precise pressure regulating valve, digital pressure transducer, inflationtime relay and Dwell time relay;Press mechanism is arranged in the top of the casing frame, and the press mechanism includes lower air cylinder and cylinder Push plate, the piston end of the lower air cylinder are connect straight down and with cylinder push plate;Pressing is arranged in the bottom of the casing frame Module, the pressing module are located at the underface of cylinder push plate;The adjusting of the surface setting precise pressure regulating valve of the casing frame Knob, inflationtime relay and dwell time relay;Two-way is picked out on the precise pressure regulating valve, is become respectively with digital display pressure Loose device is connected with pressing module;The inflationtime relay and dwell time relay are connect with precise pressure regulating valve.
Further, the casing frame includes box body, bottom plate, support plate, top plate, and the box body is upper opening, described Bottom plate is fixedly connected in the opening of box body, and the two sides of the substrate are respectively fixedly connected with one piece of support being vertically arranged Plate, the top plate are fixedly connected on the upper end of two pieces of support plates across ground;The press mechanism is set on top plate, the pressing Module is set on bottom plate.
Further, the press mechanism further includes air cylinder fixed plate, guide pillars and bushes, and the lower air cylinder passes through cylinder Fixed plate is fixedly connected on the top of casing frame, the top connection of the guide post and casing frame, and the cylinder push plate passes through Guide sleeve is installed on guide post.
Further, the pressing module includes the first pressing module and the second pressing module;The first pressing module In square block, first pressing module bottom surface be fixedly connected with casing frame, first pressing module top surface set there are three position Column, the center of the first pressing module are equipped with circular hole up and down, offer among the leading flank of the first pressing module and circular hole The bottom surface of the notch of connection, the first pressing module is equipped with the conduit of left and right trend;It is described second pressing module include plate body and The cylinder being fixedly connected among plate body, the plate body are set in the conduit of the first pressing module bottom surface, the front side of plate body The distance of side to back side edge is less than the front side cell wall of conduit to the distance of rear side cell wall, and the two sides of plate body are respectively equipped with slot, plate Body passes through slot by fixed screw and is fixedly connected with casing frame, and the cylinder is set to the circular hole of the first pressing module Interior, the diameter of cylinder is less than the diameter of circular hole, and gas-tpe fitting is connected on cylinder, and the inside top of cylinder is equipped with annular Slot, the annular groove embed O-ring.
Further, three cylinders corresponding with three positioning columns are fixedly connected with below the cylinder push plate.
It further, further include the first pressure regulation filter and the second pressure regulation filter;The first pressure regulation filter is used for External air source is connected, two-way is picked out on the first pressure regulation filter, is connect respectively with lower air cylinder and the second pressure regulation filter;It is described Second pressure regulation filter is connect with precise pressure regulating valve.
Further, the press mechanism further includes cylinder downlink magnetic switch in place, cylinder downlink magnetic in place Property switch connect with the first pressure regulation filter and inflationtime relay.
Further, the surface of the casing frame be additionally provided with pressure display unit, the first start button, second starting by Button, buzzer and electromotion pilot lamp;The pressure display unit is connect with precise pressure regulating valve;First start button and second opens Dynamic button is connect with lower air cylinder.
It further, further include signal adapter, the signal adapter is connect with digital pressure transducer.Further include Computer, the computer are connect with signal adapter.
Compared with prior art, the utility model has the beneficial effects that pressing module design corresponding with shape of product, pushes Mechanism closely compresses product and pressing module, and good airproof performance, test result is accurate, and computer judges test result and stores number According to convenient retrospect and inquiry to data.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model.
Fig. 2 is the structural schematic diagram of the product to be measured in the utility model.
Fig. 3 is the structural schematic diagram of the first pressing module in the utility model.
Fig. 4 is the structural schematic diagram of the second pressing module in the utility model.
Fig. 5 is the schematic diagram of internal structure of the box body of the casing frame in the utility model.
Component mark is as follows in figure:
1 casing frame
101 box bodys
102 bottom plates
103 support plates
104 top plates
2 lower air cylinders
3 air cylinder fixed plates
4 cylinder push plates
5 guide posts
6 cylinders
7 first pressing modules
701 positioning columns
702 circular holes
703 notches
704 conduits
8 second pressing modules
801 plate bodys
802 cylinders
803 slots
804 annular grooves
9 adjusting knobs
10 digital pressure transducers
11 inflationtime relays
12 dwell time relays
13 first pressure regulation filters
14 second pressure regulation filters
15 pressure display units
16 first start buttons
17 second start buttons
18 buzzers
19 electromotion pilot lamps
20 signal adapters
21 products to be measured
2101 flange collar structures
2102 location holes.
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing, becomes apparent from those skilled in the art How ground understanding practices the utility model.Although describing the utility model in conjunction with its preferred embodiment, these Embodiment only illustrates, rather than limits the scope of the utility model.
Referring to Fig. 1, a kind of airtight test device of simulation pressing, including casing frame 1, press mechanism, pressing module, essence Close pressure regulator valve, digital pressure transducer 10, inflationtime relay 11 and dwell time relay 12.
The casing frame 1 includes box body 101, bottom plate 102, support plate 103, top plate 104 and backboard, the box body 101 For upper opening, the bottom plate 102 is fixedly connected in the opening of box body 101, and the two sides above the bottom plate 102 are fixed respectively to be connected One piece of support plate being vertically arranged 103 is connect, the top plate 104 is fixedly connected on the upper end of two pieces of support plates 103 across ground, described Backboard is fixedly connected on the back side of the framework of 102, two pieces of support plates 103 of bottom plate and the composition of top plate 104.
The press mechanism includes lower air cylinder 2, air cylinder fixed plate 3, cylinder push plate 4, guide post 5 and guide sleeve, the pushing Cylinder 2 by air cylinder fixed plate 3 be fixedly connected on casing frame 1 top plate 104 in the following, lower air cylinder 2 piston end vertically to It connect down and with cylinder push plate 4,4 guide posts 5, the cylinder is set between the top plate 104 and bottom plate 102 of the casing frame 1 The quadrangle of push plate 4 passes through a guide sleeve respectively and is installed on 4 guide posts 5;Cylinder downlink magnetic in place is additionally provided in the cylinder push plate 4 Property switch.
The center of product to be measured 21 shown in Figure 2, product 21 to be measured is equipped with flange collar structure 2101, product 21 to be measured Periphery set there are three protrude location hole 2102.The cylinder push plate 4 of the press mechanism is fixedly connected below there are three cylinder 6, The setting corresponding with three 2102 positions of location hole of product 21 to be measured of three cylinders 6.
Referring to Fig. 1, it is described pressing module be set to casing frame 1 bottom plate 102 above and be located at cylinder push plate 4 just under Side, pressing module include the first pressing module 7 and the second pressing module 8.
Referring to Fig. 3, the first pressing module 7 is in square block, and the Corner Strapped of the first pressing module 7 is connected to shell frame On the bottom plate 102 of frame 1, the top surface of the first pressing module 7 is set there are three positioning column 701, three positioning columns 701 and product 21 to be measured Three corresponding settings in 2102 position of location hole, the center of the first pressing module 7 is equipped with circular hole 702 up and down, first It presses and offers the notch 703 being connected to circular hole 702 among the leading flank of module 7, the bottom surface of the first pressing module 7 is equipped with a left side The conduit 704 of right trend.
Referring to fig. 4, the second pressing module 8 including plate body 801 and is fixedly connected on cylinder intermediate above plate body 801 Body 802, the plate body 801 are set in the conduit 704 of 7 bottom surface of the first pressing module, and the two sides of plate body 801 are respectively equipped with slot 803, plate body 801 passes through slot 803 by fixed screw and is fixedly connected with the bottom plate 102 of casing frame 1, the cylinder 802 It is set in the circular hole 702 of the first pressing module 7, the diameter of cylinder 802 is slightly less than the diameter of circular hole 702, and cylinder 802 is used It is engaged in the flange collar structure 2101 with product 21 to be measured and constitutes closed space, to carry out air tightness test, can see The cylinder 802 of the second pressing module 8 into Fig. 1 is equipped with gas-tpe fitting;The inside top of the cylinder 802 is equipped with ring Shape slot 804, annular groove 804 embed O-ring, can avoid gas leakage, provide good sealed environment for product 21 to be measured.By plate body 801 width is set smaller than the width of conduit 704, i.e. the distance of the front side edge of plate body 801 to back side edge is less than conduit 704 Front side cell wall to rear side cell wall distance, such plate body 801 in conduit 704 can front and back fine tuning, and then adjust cylinder 802 Position in circular hole 702, such L while and product when R can be tested with same set of pressing module.
When actual installation first presses module 7 and the second pressing module 8, the second pressing module 8 is first placed in bottom plate 102 Above, then by the first pressing module 7 the second pressing module 8 is clasped from top to bottom, keep conduit 704 corresponding with plate body 801, make to justify Hole 702 and cylinder 802 are corresponding, are then fixedly connected with the quadrangle of the first pressing module 7 with bottom plate 102, by the second pressing The two sides of module 8 are fixedly connected with bottom plate 102.
Referring to Fig. 1, digital pressure transducer 10 is installed on the top plate 104 of the casing frame 1, it is to be measured for real-time display Pressure in product 21, and export the analog signal of measurement.
Adjusting knob 9, the inflationtime relay of precise pressure regulating valve are mainly set on the front panel of the box body 101 11, dwell time relay 12.Two-way is separated on the precise pressure regulating valve, fluff with digital display pressure device and the second press-fitting mould respectively Block 8 connects.The inflationtime relay 11 and dwell time relay 12 are connect with precise pressure regulating valve, inflationtime relay 11 for controlling inflationtime, and dwell time relay 12 is for controlling the dwell time.It further include the first pressure regulation when actual implementation Filter 13 and the second pressure regulation filter 14, the first pressure regulation filter 13 and the second pressure regulation filter 14 are fixedly connected on outer On shell frame 1, external air source generate gas connect with the first pressure regulation filter 13 after, be divided into two-way, all the way with lower air cylinder 2 Connection, another way are connect with the second pressure regulation filter 14, and the second pressure regulation filter 14 is connect with precise pressure regulating valve again.
Be additionally provided on the front panel of the box body 101 pressure display unit 15, the first start button 16, second starting by Button 17, buzzer 18 and electromotion pilot lamp 19.The pressure display unit 15 is connect to show inner gas pressure with precise pressure regulating valve.Institute It states the first start button 16 and the second start button 17 is connect with lower air cylinder 2, while pressing the first start button 16 and When two start buttons 17,2 downlink of lower air cylinder, when individually pressing the second start button 17,2 uplink of lower air cylinder.The buzzing Device 18 is for prompting test result.The electromotion pilot lamp 19 is connect with the power supply of the present apparatus, is used to indicate the energization of the present apparatus State.
Signal adapter 20 is equipped in the box body 101, signal adapter 20 includes analog-digital converter and digital analog converter. The signal adapter 20 is connect with digital pressure transducer 10.
It further include computer, the computer is connect with signal adapter 20, what the digital pressure transducer 10 exported Analog signal becomes RS485 signal via signal adapter 20 and is transferred to computer, and computer is judged;Test result PASS Then buzzer 18 does not pipe, and test result NG, then buzzer 18 pipes.Magnetic switch controls lower air cylinder 2 to cylinder downlink in place Downlink stops afterwards in place.
It is carried out as follows when test:
1. first the present apparatus is powered and connect with computer, electromotion pilot lamp 19 is lighted at this time, digital pressure transducer 10 It lights and numerical value is 0.
Need to adjust the position of the second pressing module 8 before 2. first product 21 to be measured detects, it can be with production to be measured Product 21 match: firstly, the fixed screw of the second pressing 8 two sides of module is unclamped, and product 21 to be measured being placed on the first pressing It in module 7, penetrates three location holes 2102 on product 21 to be measured on three positioning columns 701 in first pressing module 7, adjusts The position of whole second pressing module 8 can match with product 21 to be measured, and be locked screw later, press module for second 8 fix.
3. the time of inflationtime relay 11 is set as 10S, the time of dwell time relay 12 is set as 5S, this Illustrate that inflationtime is 10S, dwell time 5S.
4. adjusting the adjusting knob 9 of precise pressure regulating valve, the numerical value on pressure display unit 15 is observed, the blowing pressure is maintained at Between 12-13KP.
5. product 21 to be measured is placed in the first pressing module 7, distinguish three location holes 2102 of product 21 to be measured It penetrates on three positioning columns 701 of the first pressing module 7, for first product 21 to be measured having had good positioning, is then not necessarily to Execute this step.
6. pressing the first start button 16 and the second start button 17 simultaneously, lower air cylinder 2 is driven under cylinder push plate 4 at this time Row, when cylinder push plate 4 operation in place after, cylinder downlink in place magnetic switch control lower air cylinder 2 stop, while inflationtime after Electric appliance 11 receives 2 magnetic switch signal of lower air cylinder and starts timing, starts to inflate in product 21 to be measured, digital pressure transducer The numerical value of air pressure in real time in 10 display products 21 to be measured, after 11 timing of inflationtime relay, dwell time relay 12 Start timing in 11 timing end signal of inflationtime relay, inflation is closed at this time, starts pressure maintaining.
7. after pressure maintaining, computer reads the numerical value of digital pressure transducer 10, determine measurement result whether in range Within, if within the scope of if result be PASS, while lower air cylinder 2 receives the PASS signal of computer and resets upwards; If result not within the scope of, test result NG, the NG signal that buzzer 18 receives computer sounds an alarm, and counts at this time Test result can be shown on calculation machine, can check why NG, and can occur the dialog box of NG on interface, press in dialog box Confirming button after, the stopping of buzzer 18 pipes, while lower air cylinder 2 receives signal and resets upwards.
After entire measurement, TXT document is generated on computer, to record measurement result, including machine title, test Time and date, test number and test result, to facilitate later inquiry and retrospect.
It should be pointed out that can also have a variety of transformation and the implementation of remodeling for the utility model through absolutely proving Scheme, it is not limited to the specific embodiment of above embodiment.Above-described embodiment as just the utility model explanation, and It is not limitations of the present invention.In short, the protection scope of the utility model should include those for ordinary skill It obviously converts or substitutes and retrofit for personnel, and be determined by the appended claims.

Claims (10)

1. a kind of airtight test device of simulation pressing, which is characterized in that including casing frame, press mechanism, pressing module, essence Close pressure regulator valve, digital pressure transducer, inflationtime relay and dwell time relay;The top of the casing frame is arranged Press mechanism, the press mechanism include lower air cylinder and cylinder push plate, the piston end of the lower air cylinder straight down and with Cylinder push plate connection;The bottom setting pressing module of the casing frame, the pressing module are located at the underface of cylinder push plate; Adjusting knob, inflationtime relay and the dwell time relay of the surface setting precise pressure regulating valve of the casing frame;Institute State and pick out two-way on precise pressure regulating valve, fluff respectively with digital display pressure device and pressing module connect;The inflationtime relay It is connect with precise pressure regulating valve with dwell time relay.
2. the airtight test device of simulation pressing according to claim 1, which is characterized in that the casing frame includes box Body, bottom plate, support plate, top plate, the box body are upper opening, and the bottom plate is fixedly connected in the opening of box body, the bottom plate Two sides above are respectively fixedly connected with one piece of support plate being vertically arranged, and the top plate is fixedly connected on two pieces of support plates across ground Upper end;The press mechanism is set on top plate, and the pressing module is set on bottom plate.
3. the airtight test device of simulation pressing according to claim 1, which is characterized in that the press mechanism further includes Air cylinder fixed plate, guide pillars and bushes, the lower air cylinder is fixedly connected on the top of casing frame by air cylinder fixed plate, described The connection of the top of guide post and casing frame, the cylinder push plate are installed on guide post by guide sleeve.
4. the airtight test device of simulation pressing according to claim 1, which is characterized in that the pressing module includes the One pressing module and the second pressing module;The first pressing module is in square block, the bottom surface of the first pressing module and shell frame Frame is fixedly connected, and the top surface of the first pressing module is set there are three positioning column, and the center of the first pressing module is equipped with up and down Circular hole offers notch be connected to circular hole among the leading flank of the first pressing module, and the first bottom surface for pressing module is equipped with The conduit of left and right trend;The cylinder that the second pressing module includes plate body and is fixedly connected among plate body, the plate body It is set in the conduit of the first pressing module bottom surface, the front side cell wall that the distance of front side edge to the back side edge of plate body is less than conduit arrives The distance of rear side cell wall, the two sides of plate body are respectively equipped with slot, and plate body passes through slot by fixed screw and fixes with casing frame Connection, the cylinder is set in the circular hole of the first pressing module, and the diameter of cylinder is less than the diameter of circular hole, on cylinder It is connected with gas-tpe fitting, the inside top of cylinder is equipped with annular groove, and the annular groove embeds O-ring.
5. the airtight test device of simulation pressing according to claim 4, which is characterized in that below the cylinder push plate It is fixedly connected with three cylinders corresponding with three positioning columns.
6. the airtight test device of simulation pressing according to claim 1, which is characterized in that further include the first pressure regulation filtering Device and the second pressure regulation filter;The first pressure regulation filter picks out two on the first pressure regulation filter for connecting external air source Road is connect with lower air cylinder and the second pressure regulation filter respectively;The second pressure regulation filter is connect with precise pressure regulating valve.
7. the airtight test device of simulation pressing according to claim 6, which is characterized in that the press mechanism further includes Cylinder downlink magnetic switch in place, the cylinder downlink magnetic switch and the first pressure regulation filter and inflationtime relay in place Connection.
8. the airtight test device of simulation pressing according to claim 1, which is characterized in that the surface of the casing frame It is additionally provided with pressure display unit, the first start button, the second start button, buzzer and electromotion pilot lamp;The pressure is shown Device is connect with precise pressure regulating valve;First start button and the second start button are connect with lower air cylinder.
9. the airtight test device of simulation pressing according to claim 8, which is characterized in that it further include signal adapter, The signal adapter is connect with digital pressure transducer.
10. the airtight test device of simulation pressing according to claim 9, which is characterized in that it further include computer, it is described Computer is connect with signal adapter.
CN201821633808.3U 2018-10-09 2018-10-09 A kind of airtight test device of simulation pressing Active CN208999034U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821633808.3U CN208999034U (en) 2018-10-09 2018-10-09 A kind of airtight test device of simulation pressing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821633808.3U CN208999034U (en) 2018-10-09 2018-10-09 A kind of airtight test device of simulation pressing

Publications (1)

Publication Number Publication Date
CN208999034U true CN208999034U (en) 2019-06-18

Family

ID=66803354

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821633808.3U Active CN208999034U (en) 2018-10-09 2018-10-09 A kind of airtight test device of simulation pressing

Country Status (1)

Country Link
CN (1) CN208999034U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110340576A (en) * 2019-07-15 2019-10-18 宁波奥克斯电气股份有限公司 Nitrogen charging device and its control method for welding
CN111795786A (en) * 2020-06-15 2020-10-20 黄山旺荣电子有限公司 Relay gas tightness detection device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110340576A (en) * 2019-07-15 2019-10-18 宁波奥克斯电气股份有限公司 Nitrogen charging device and its control method for welding
CN110340576B (en) * 2019-07-15 2021-10-08 宁波奥克斯电气股份有限公司 Nitrogen charging device for welding and control method thereof
CN111795786A (en) * 2020-06-15 2020-10-20 黄山旺荣电子有限公司 Relay gas tightness detection device

Similar Documents

Publication Publication Date Title
CN208999034U (en) A kind of airtight test device of simulation pressing
CN105259413B (en) The miniature resistance automatic test machine of mobile phone
CN106706232A (en) Seal tightness detection system and detection steps thereof
CN203053656U (en) Water nozzle hydraulic-pressure and air-pressure sealing detector
CN108151984A (en) A kind of cigarette package tightness detection device
CN106482915B (en) A kind of air inlet relief valve attachment assembly leakage flow automatic checkout equipment
CN104792469A (en) Automatic detecting platform for airtightness of air cylinders
CN202158951U (en) Fixture for electromagnetic valve on-line test table
CN108760188A (en) A kind of automatic detection device and system
CN205353203U (en) Miniature resistance automatic testing of cell -phone machine
CN104165740B (en) Airtightness detection system for brake hydraulic cylinder
CN205038025U (en) Gas tightness detection device
CN207636218U (en) Fuel pressure transmitter performance detection apparatus
CN204612868U (en) Cylinder impermeability automatic detecting table
CN102183231A (en) Automobile side air bag contour detector
CN211527809U (en) Button fatigue test platform
CN105865726A (en) Detection device for air tightness of motor framework oil seal
CN202886078U (en) Water and gas tester for braided tubes
CN206300759U (en) A kind of air inlet relief valve annex assembly leakage flow automatic checkout equipment
CN207148243U (en) Automatic detection device is inserted in a kind of tube drawbench leakage
CN104677907B (en) A kind of mobile phone light guiding film generic inspection tool
CN111665001A (en) Automatic change metal bipolar plate equipment of leaking hunting
CN102519740B (en) Tubing unit box and hood opening-closing mechanism test bed
CN215726492U (en) Mini switch multistation shell fragment check out test set
CN204422140U (en) Automatic pressure instrument checking table

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant