CN113909146A - Full-automatic oil pump gas tightness detection device - Google Patents

Full-automatic oil pump gas tightness detection device Download PDF

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Publication number
CN113909146A
CN113909146A CN202111144650.XA CN202111144650A CN113909146A CN 113909146 A CN113909146 A CN 113909146A CN 202111144650 A CN202111144650 A CN 202111144650A CN 113909146 A CN113909146 A CN 113909146A
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CN
China
Prior art keywords
oil pump
plate
supporting
airtight
full
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.)
Pending
Application number
CN202111144650.XA
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Chinese (zh)
Inventor
伍涛
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.)
Chongqing Qitong Automobile Parts Co ltd
Original Assignee
Chongqing Qitong Automobile Parts Co 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 Chongqing Qitong Automobile Parts Co ltd filed Critical Chongqing Qitong Automobile Parts Co ltd
Priority to CN202111144650.XA priority Critical patent/CN113909146A/en
Publication of CN113909146A publication Critical patent/CN113909146A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34Sorting according to other particular properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/36Sorting apparatus characterised by the means used for distribution
    • B07C5/38Collecting or arranging articles in groups
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/06Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool

Abstract

The invention discloses a full-automatic oil pump air tightness detection device which comprises a workbench, wherein an air tightness detector and a support device are arranged on the workbench, a rack bottom plate is arranged on the support bottom plate, a guide rail extending forwards and backwards is arranged on the rack bottom plate, an oil pump air tightness tool lower plate is slidably arranged on the guide rail, a groove matched with the outer contour of a pump body of an oil pump is arranged on the oil pump air tightness tool lower plate, a first sealing ring is arranged in the groove, an air hole is formed in the oil pump air tightness tool lower plate, one end of the air hole is communicated with an air pipe of the air tightness detector, the other end of the air hole is used for being communicated with an inner cavity of the oil pump, the same movable plate is movably sleeved on all support stand columns, the lower end of the movable plate is connected with a cover plate, a second sealing ring is arranged on the lower surface of the cover plate, a pneumatic press machine is arranged on the support top plate, and a piston rod of the pneumatic press machine extends downwards to penetrate through the support top plate and then is connected with the movable plate. The invention has the advantages of convenient use, high detection precision and high detection efficiency.

Description

Full-automatic oil pump gas tightness detection device
Technical Field
The invention relates to the technical field of air tightness detection, in particular to a full-automatic oil pump air tightness detection device.
Background
The automobile oil pump is in practical process, and fluid directly passes through from the pump chamber, consequently has higher requirement for the gas tightness of oil pump, need pass through the gas tightness after the oil pump assembly is accomplished and detect.
However, in the prior art, the air tightness detection of the oil pump usually depends on manual detection. One detection method is as follows: the oil inlet of the oil pump is connected with the air pipe by a worker to block the oil outlet of the oil pump, then the oil pump is put into water, and finally the air is supplied to the oil pump through the air pipe; if no bubble is generated at each position of the oil pump, the air tightness of the oil pump is good, and if the bubble is generated, the air tightness of the oil pump is not good. The other detection mode is as follows: the staff passes through the screw manual tightening with the oil pump with the detection head of airtight detector earlier, then detects the atmospheric pressure change of oil pump inner chamber, if appear changing then explain that the oil pump gas tightness is not good. The efficiency of both detection modes is low, and the manpower consumption is large.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a full-automatic oil pump air tightness detection device which is convenient to use, labor-saving, high in detection precision and high in detection efficiency.
In order to achieve the purpose, the invention provides a full-automatic oil pump air tightness detection device, which comprises a workbench, wherein an air tightness detector and a supporting device are arranged on the workbench, the supporting device consists of a supporting bottom plate, a supporting top plate and a plurality of supporting upright columns connected between the supporting bottom plate and the supporting top plate, a rack bottom plate is arranged on the supporting bottom plate, a guide rail extending forwards and backwards is arranged on the rack bottom plate, an oil pump air tightness tool lower plate is arranged on the guide rail in a sliding manner, a groove matched with the outer contour of a pump body of an oil pump is arranged on the oil pump air tightness tool lower plate, a first sealing ring used for forming seal with the pump body of the oil pump is arranged in the groove, an air hole is arranged on the oil pump air tightness tool lower plate, one end of the air hole is communicated with an air pipe of the air tightness detector, and the other end of the air hole is used for being communicated with an inner cavity of the oil pump, the rear of the airtight frock hypoplastron of oil pump is provided with electric cylinder, electric cylinder's piston rod is connected with the rear end of the airtight frock hypoplastron of oil pump, and movable sleeve is equipped with same fly leaf on all support posts, the lower extreme of fly leaf is connected with the apron that corresponds from top to bottom with the airtight frock hypoplastron of oil pump, be provided with on the lower surface of apron and be used for forming sealed second sealing washer with the end cover of oil pump, be provided with pneumatic press on the supporting roof, pneumatic press's piston rod downwardly extending runs through behind the supporting roof and is connected with the fly leaf.
In the scheme, the method comprises the following steps: the automatic oil pump loading and unloading device is characterized in that a manipulator for clamping an oil pump is arranged in front of the workbench, a product collecting box to be detected, a qualified product collecting box to be detected and an unqualified product collecting box to be detected are arranged near the manipulator respectively, the manipulator can automatically load and unload the oil pump, a sensing device at the front end of the manipulator can make corresponding judgment according to a detection result, the manipulator is instructed to classify and collect qualified products and unqualified products, and compared with manual loading and unloading, the automatic oil pump loading and unloading device greatly improves the detection efficiency of the oil pump, so that the automatic oil pump loading, detection and unloading are fully automated.
In the scheme, the method comprises the following steps: the manipulator is provided with an intelligent sensing camera, the detection result of the air tightness detector is judged through the intelligent sensing camera, the corresponding program is executed, the work flow induction program of the full-automatic oil pump air tightness detection device is solidified, so that the detection device can operate the corresponding program and remove simple faults when the detection device breaks down, and the shutdown alarm is implemented for faults without the corresponding program.
In the scheme, the method comprises the following steps: the air tightness detector is characterized in that a controller and a switch button are arranged on the workbench, the switch button is electrically connected with the controller, and the controller is electrically connected with the electric cylinder, the air tightness detector and the pneumatic press respectively.
In the scheme, the method comprises the following steps: the four supporting columns are respectively arranged at four corners of the supporting top plate and the supporting bottom plate, guide sleeves are correspondingly arranged at four corners of the movable plate, and the supporting columns penetrate through the guide sleeves. The guide sleeve plays a guiding role, so that the cover plate arranged at the lower end of the movable plate can be accurately butted with a pump cover of the oil pump, and sealing is formed under the action of the second sealing ring.
In the scheme, the method comprises the following steps: the electric cylinders are arranged at the rear of the oil pump airtight tool lower plate side by side, the foremost ends of the two electric cylinders are transversely provided with the same door-shaped limiting block, piston rods of the two electric cylinders penetrate out of an opening of the door-shaped limiting block and are connected with the oil pump airtight tool lower plate, and the door-shaped limiting block can limit backward movement of the oil pump airtight tool lower plate. Thereby prevent that the airtight frock hypoplastron of oil pump from excessively shifting backward the roll-off guide rail.
In the scheme, the method comprises the following steps: the door-shaped limiting block is just arranged at the rearmost end of the bottom plate of the rack. The door-shaped limiting block and the rack bottom plate can be connected through bolts, and the bolt connection structure is simple and convenient to disassemble and assemble.
In the scheme, the method comprises the following steps: the sealing structure is characterized in that a first annular groove corresponding to an opening of the pump body is formed in the groove, the first sealing ring is embedded in the first annular groove and protrudes outwards, a second annular groove corresponding to a through hole in the end cover is formed in the lower surface of the cover plate, and the second sealing ring is embedded in the second annular groove and protrudes outwards. Each sealing ring is arranged in the corresponding annular groove and is not easy to fall off.
The invention has the beneficial effects that:
1. the device is provided with a gas press machine which can provide 1.8-2.6 MPa pressure; the pressure of the inner cavity of the oil pump is influenced by the air tightness detector to be 0.6-0.8 MPa, which is smaller than the pressure of the gas press; therefore, the cover plate can be tightly pressed on the oil pump by means of the gas pressure machine, so that the cover plate, the oil pump and the oil pump airtight tool lower plate are tightly connected, and then the first sealing ring and the second sealing ring are matched to form a sealing effect on an inner cavity of the oil pump; compared with the traditional screw connection method for forming sealing, the automatic sealing can be realized by the design, so that the detection efficiency is greatly improved, the labor cost is saved, the sealing precision is ensured, and the accuracy of the detection result is ensured;
2. when the air tightness is detected, the lower plate of the oil pump air-tight tool needs to be moved to the front, then the oil pump is placed in the groove of the lower plate of the oil pump air-tight tool, and then the lower plate of the oil pump air-tight tool is moved backwards to a specified position; according to the invention, the electric cylinder is arranged behind the lower plate of the oil pump airtight tool, and the electric cylinder drives the lower plate of the oil pump airtight tool to move back and forth along the guide rail, so that the labor cost of the step is saved, the safety of workers is ensured, and the detection efficiency is further improved;
3. the automatic oil pump sealing device has the advantages that the whole automation degree is high, the lower plate of the oil collecting pump airtight tool automatically moves, the oil pump is automatically sealed, and the oil pump is automatically detected through the airtight detector into a whole.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a partial front view of the present invention.
Fig. 3 is a schematic view of the installation of the first sealing ring on the lower plate of the oil pump airtight tool.
Fig. 4 is a schematic view of the mounting of the second seal ring on the cover plate.
Fig. 5 is a partial rear view of the present invention.
Fig. 6 is a schematic structural view of the oil pump end cover side.
Fig. 7 is a schematic structural view of the oil pump body side.
Detailed Description
As shown in fig. 1-5, a full-automatic oil pump air tightness detection device mainly comprises a workbench 1, an air tightness detector 2 and a supporting device.
Fig. 6-7 show an oil pump 25.
Referring to fig. 1 to 7, the air tightness detector 2 and the supporting device are fixed on the worktable 1, and the supporting device is composed of a supporting bottom plate 3, a supporting top plate 4 and a plurality of supporting columns 5 connected between the supporting bottom plate 3 and the supporting top plate 4.
Be provided with rack bottom plate 6 on the supporting baseplate 3, be provided with the guide rail 7 of extending around on the rack bottom plate 6, slidable mounting has oil pump airtight frock hypoplastron 8 on guide rail 7. The oil pump airtight tool lower plate 8 is provided with a groove 9 matched with the outer contour of the pump body of the oil pump 25, and a first sealing ring 10 used for forming sealing with the pump body of the oil pump 25 is arranged in the groove 9. An air hole 11 is formed in the oil pump airtight tool lower plate 8, one end of the air hole 11 is communicated with an air pipe of the airtight detector 2, and the other end of the air hole 11 is communicated with an inner cavity of the oil pump 25.
An electric cylinder 12 is arranged behind the oil pump airtight tool lower plate 8, and a piston rod of the electric cylinder 12 is connected with the rear end of the oil pump airtight tool lower plate 8. When the air tightness is detected, the lower plate 8 of the oil pump air-tight tool needs to be moved to the front, then the oil pump 25 is placed in the groove 9 of the lower plate 8 of the oil pump air-tight tool, and then the lower plate 8 of the oil pump air-tight tool is moved backwards to a specified position; set up electric cylinder 12 at the rear of oil pump airtight frock hypoplastron 8, drive oil pump airtight frock hypoplastron 8 along the back-and-forth movement of guide rail 7 through electric cylinder 12, saved the human cost of this step, also guaranteed staff's safety, still do benefit to further improvement detection efficiency.
The same movable plate 13 is movably sleeved on all the supporting columns 5, the lower end of the movable plate 13 is connected with a cover plate 14 which vertically corresponds to the oil pump airtight tool lower plate 8, and a second sealing ring 15 which is used for forming sealing with an end cover of an oil pump 25 is arranged on the lower surface of the cover plate 14. The supporting top plate 4 is provided with a pneumatic press 16 which can provide 1.8-2.6 of pressure, and a piston rod of the pneumatic press 16 extends downwards to penetrate through the supporting top plate 4 and then is connected with the movable plate 13.
Preferably, a manipulator 18 for gripping the oil pump 25 is arranged in front of the worktable 1, and a to-be-detected product collecting box 19, a to-be-detected qualified product collecting box 20 and a to-be-detected unqualified product collecting box 21 are respectively arranged near the manipulator 18. The manipulator 18 can automatically carry out the loading and the unloading of the oil pump 25, the sensing device at the front end of the manipulator 18 can also make corresponding judgment according to the detection result, the manipulator 18 is instructed to classify and collect qualified products and unqualified products, and compared with manual loading and unloading, the device greatly improves the detection efficiency of the oil pump 25, so that the full automation of loading, detection and unloading is realized.
Preferably, the manipulator 18 is provided with an intelligent sensing camera 22, the detection result of the air tightness detector 2 is judged through the intelligent sensing camera 22, a corresponding program is executed, the intelligent sensing camera 22 at the front end of the manipulator 18 can make a corresponding judgment according to the detection result, qualified products and unqualified products are classified and collected, and a working flow induction program of the full-automatic oil pump air tightness detection device is solidified, so that a corresponding program can be operated and simple faults can be removed when the detection device fails, and a shutdown alarm is implemented on faults without corresponding programs.
Preferably, the worktable 1 is provided with a controller 17 and a switch button 26, the switch button 26 is electrically connected with the controller 17, and the controller 17 is electrically connected with the electric cylinder 12, the air tightness detector 2 and the pneumatic press 16 respectively.
Preferably, four support columns 5 are respectively disposed at four corners of the support top plate and the support bottom plate, guide sleeves 23 are correspondingly disposed at four corners of the movable plate 13, and the support columns 5 pass through the guide sleeves 23. The guide sleeve 23 plays a guiding role, so that the cover plate 14 installed at the lower end of the movable plate 13 can be precisely butted with the pump cover of the oil pump 25, and a seal is formed under the action of the second seal ring 15.
Preferably, two electric cylinders 12 are arranged side by side behind the oil pump airtight tool lower plate 8, the foremost ends of the two electric cylinders 12 are transversely provided with the same door-shaped limiting block 24, piston rods of the two electric cylinders 12 penetrate out of an opening of the door-shaped limiting block 24 to be connected with the oil pump airtight tool lower plate 8, and the door-shaped limiting block 24 can limit backward movement of the oil pump airtight tool lower plate 8. And the lower plate 8 of the oil pump airtight tool is prevented from excessively moving backwards and sliding out of the guide rail 7.
Preferably, a "door" type stop 24 is mounted just aft of the gantry floor 6. The door-shaped limiting block 24 and the rack bottom plate 6 can be connected through bolts, and the bolt connection structure is simple and convenient to disassemble and assemble.
Preferably, the recess 9 is provided with a first annular groove corresponding to the opening of the pump body, the first sealing ring 10 is fitted in the first annular groove and protrudes outward, the lower surface of the cover plate 14 is provided with a second annular groove corresponding to the through hole of the end cover, and the second sealing ring 15 is fitted in the second annular groove and protrudes outward. Each sealing ring is arranged in the corresponding annular groove and is not easy to fall off.

Claims (8)

1. The utility model provides a full-automatic oil pump gas tightness detection device, includes workstation (1), be provided with airtight detector (2) and strutting arrangement on workstation (1), its characterized in that: the supporting device comprises a supporting bottom plate (3), a supporting top plate (4) and a plurality of supporting columns (5) connected between the supporting bottom plate (3) and the supporting top plate (4), wherein a rack bottom plate (6) is arranged on the supporting bottom plate (3), a guide rail (7) extending from front to back is arranged on the rack bottom plate (6), an oil pump airtight tool lower plate (8) is slidably arranged on the guide rail (7), a groove (9) matched with the outer contour of a pump body of an oil pump (25) is arranged on the oil pump airtight tool lower plate (8), a first sealing ring (10) used for forming sealing with the pump body of the oil pump (25) is arranged in the groove (9), an air hole (11) is arranged on the oil pump airtight tool lower plate (8), one end of the air hole (11) is communicated with an air pipe of an airtight detector (2), and the other end of the air hole (11) is communicated with the inner cavity of the oil pump (25), the rear of oil pump airtight frock hypoplastron (8) is provided with electric cylinder (12), the piston rod of electric cylinder (12) is connected with the rear end of oil pump airtight frock hypoplastron (8), and movable sleeve is equipped with same fly leaf (13) on all support post (5), the lower extreme of fly leaf (13) is connected with apron (14) that correspond from top to bottom with oil pump airtight frock hypoplastron (8), be provided with on the lower surface of apron (14) and be used for forming sealed second sealing washer (15) with the end cover of oil pump (25), be provided with pneumatic press (16) on supporting roof (4), the piston rod downwardly extending of pneumatic press (16) runs through supporting roof (4) the back and is connected with fly leaf (13).
2. The full-automatic oil pump airtightness detection apparatus according to claim 1, characterized in that: the manipulator (18) used for clamping the oil pump (25) is arranged in front of the workbench (1), and a product collecting box (19) to be detected, a qualified product collecting box (20) to be detected and an unqualified product collecting box (21) to be detected are respectively arranged near the manipulator (18).
3. The full-automatic oil pump airtightness detection apparatus according to claim 2, characterized in that: and an intelligent sensing camera (22) is arranged on the manipulator (18).
4. The full-automatic oil pump airtightness detection apparatus according to claim 1, characterized in that: be provided with controller (17) and shift knob (26) on workstation (1), shift knob (26) and controller (17) electric connection, controller (17) respectively with electric cylinder (12), airtight detector (2), pneumatic press (16) electric connection.
5. The full-automatic oil pump airtightness detection apparatus according to claim 1, characterized in that: the four supporting columns (5) are respectively arranged at four corners of the supporting top plate and the supporting bottom plate, guide sleeves (23) are correspondingly arranged at four corners of the movable plate (13), and the supporting columns (5) penetrate through the guide sleeves (23).
6. The full-automatic oil pump airtightness detection apparatus according to claim 1, characterized in that: the oil pump airtight tool is characterized in that the number of the electric cylinders (12) is two, the electric cylinders are arranged at the rear of the oil pump airtight tool lower plate (8) side by side, the foremost ends of the two electric cylinders (12) are transversely provided with the same door-shaped limiting block (24), piston rods of the two electric cylinders (12) penetrate out of an opening of the door-shaped limiting block (24) and are connected with the oil pump airtight tool lower plate (8), and the door-shaped limiting block (24) can limit backward movement of the oil pump airtight tool lower plate (8).
7. The full-automatic oil pump airtightness detection apparatus according to claim 6, characterized in that: the door-shaped limiting block (24) is just arranged at the rearmost end of the rack bottom plate (6).
8. The full-automatic oil pump airtightness detection apparatus according to claim 1, characterized in that: a first annular groove corresponding to an opening of the pump body is formed in the groove (9), the first sealing ring (10) is embedded in the first annular groove and protrudes outwards, a second annular groove corresponding to the through hole in the end cover is formed in the lower surface of the cover plate (14), and the second sealing ring (15) is embedded in the second annular groove and protrudes outwards.
CN202111144650.XA 2021-09-28 2021-09-28 Full-automatic oil pump gas tightness detection device Pending CN113909146A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111144650.XA CN113909146A (en) 2021-09-28 2021-09-28 Full-automatic oil pump gas tightness detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111144650.XA CN113909146A (en) 2021-09-28 2021-09-28 Full-automatic oil pump gas tightness detection device

Publications (1)

Publication Number Publication Date
CN113909146A true CN113909146A (en) 2022-01-11

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Application Number Title Priority Date Filing Date
CN202111144650.XA Pending CN113909146A (en) 2021-09-28 2021-09-28 Full-automatic oil pump gas tightness detection device

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CN (1) CN113909146A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205175622U (en) * 2015-11-06 2016-04-20 芜湖赛英星汽车零部件有限公司 Car oil pump lid injection molding gas tightness detection device
CN107052768A (en) * 2017-05-31 2017-08-18 慈溪市三佩机械有限公司 The automatic detection and press-loading apparatus of a kind of auto parts machinery gear-box
CN208026442U (en) * 2018-04-03 2018-10-30 阜新德尔汽车部件股份有限公司 Gearbox internal gearing oil pump pump cover air tightness detection apparatus
CN108827399A (en) * 2018-08-30 2018-11-16 慈溪市三佩机械有限公司 A kind of two-in-one detection device
CN210171966U (en) * 2019-04-26 2020-03-24 苏州华工自动化技术有限公司 Novel electric wire netting asset label detects unloading equipment
CN111760798A (en) * 2020-06-12 2020-10-13 贵州久联民爆器材发展股份有限公司九八四四生产分公司 Method and device for automatically rejecting waste products in electronic detonator assembly
CN212576903U (en) * 2020-06-12 2021-02-23 原子高科股份有限公司 Device for detecting and sorting appearance quality of radioactive particles
CN213956692U (en) * 2021-01-06 2021-08-13 宇泰工业科技(大连)有限公司 Detection table for detecting air tightness of engine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205175622U (en) * 2015-11-06 2016-04-20 芜湖赛英星汽车零部件有限公司 Car oil pump lid injection molding gas tightness detection device
CN107052768A (en) * 2017-05-31 2017-08-18 慈溪市三佩机械有限公司 The automatic detection and press-loading apparatus of a kind of auto parts machinery gear-box
CN208026442U (en) * 2018-04-03 2018-10-30 阜新德尔汽车部件股份有限公司 Gearbox internal gearing oil pump pump cover air tightness detection apparatus
CN108827399A (en) * 2018-08-30 2018-11-16 慈溪市三佩机械有限公司 A kind of two-in-one detection device
CN210171966U (en) * 2019-04-26 2020-03-24 苏州华工自动化技术有限公司 Novel electric wire netting asset label detects unloading equipment
CN111760798A (en) * 2020-06-12 2020-10-13 贵州久联民爆器材发展股份有限公司九八四四生产分公司 Method and device for automatically rejecting waste products in electronic detonator assembly
CN212576903U (en) * 2020-06-12 2021-02-23 原子高科股份有限公司 Device for detecting and sorting appearance quality of radioactive particles
CN213956692U (en) * 2021-01-06 2021-08-13 宇泰工业科技(大连)有限公司 Detection table for detecting air tightness of engine

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