CN114674259A - Multifunctional double-station automatic detection device for valve - Google Patents

Multifunctional double-station automatic detection device for valve Download PDF

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Publication number
CN114674259A
CN114674259A CN202210304619.6A CN202210304619A CN114674259A CN 114674259 A CN114674259 A CN 114674259A CN 202210304619 A CN202210304619 A CN 202210304619A CN 114674259 A CN114674259 A CN 114674259A
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CN
China
Prior art keywords
fixed
plate
longitudinal
unit
frame
Prior art date
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Pending
Application number
CN202210304619.6A
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Chinese (zh)
Inventor
蒙浩
王志凤
王瑞能
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.)
Foshan Cekesi Technology Co ltd
Guizhou Dekona Precision Equipment Manufacturing Co ltd
Reach Precision Measurement Guiyang Co ltd
Original Assignee
Foshan Cekesi Technology Co ltd
Guizhou Dekona Precision Equipment Manufacturing Co ltd
Reach Precision Measurement Guiyang 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.)
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Application filed by Foshan Cekesi Technology Co ltd, Guizhou Dekona Precision Equipment Manufacturing Co ltd, Reach Precision Measurement Guiyang Co ltd filed Critical Foshan Cekesi Technology Co ltd
Priority to CN202210304619.6A priority Critical patent/CN114674259A/en
Publication of CN114674259A publication Critical patent/CN114674259A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • 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
    • B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
    • B65G15/60—Arrangements for supporting or guiding belts, e.g. by fluid jets
    • 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
    • B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
    • B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
    • 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
    • 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
    • B65G47/34—Devices for discharging articles or materials from conveyor 
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/10—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring diameters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

The invention discloses a multifunctional double-station automatic detection device for a valve. The device comprises a feeding unit (1), a first carrying unit (2) and a second carrying unit (6), wherein a bounce detection unit (3) and a rod diameter detection unit (4) are arranged between the feeding unit (1) and the first carrying unit (2), a material distribution unit (5) is arranged between the first carrying unit (2) and the second carrying unit (6), two groups of air tightness detection units (7) are arranged on the right side of the material distribution unit, and two groups of discharging units (8) are arranged on the right side of the second carrying unit (6). The automatic feeding device disclosed by the invention has the advantages that the feeding, the testing, the workpiece transferring and the discharging are all automatically completed by machinery, the labor intensity is reduced, the detection efficiency is improved, the defects that the manual detection error is large, the influence of human factors is easy to cause and the like can be effectively avoided, the automation degree is higher, the measurement result is accurate and reliable, and the like. The automatic detection device is a multifunctional automatic detection device for detecting the valve.

Description

Multifunctional double-station automatic detection device for valve
Technical Field
The invention relates to a valve detection device, in particular to a device for automatically detecting valve bounce, rod diameter and conical surface sealing performance.
Background
At present, the circular runout of the valve is usually measured manually by using a dial indicator or a dial indicator; measuring tools such as a vernier caliper, a micrometer, a ring gauge or a caliper gauge are adopted to detect the diameter of the valve rod in a manual detection mode; the measurement of the sealing performance of the valve surface is also detected by adopting a manual clamping mode. The detection mode has the defects of low efficiency, high labor intensity, poor detection reliability and the like.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the multifunctional double-station automatic detection device for the valve, which has high detection efficiency and reliable detection data.
In order to achieve the purpose, the invention adopts the following technical scheme: the device comprises a feeding unit, a first carrying unit and a second carrying unit which are sequentially arranged along the transverse direction, wherein a bounce detection unit and a rod diameter detection unit are arranged between the feeding unit and the first carrying unit, a material distribution unit is arranged between the first carrying unit and the second carrying unit, two groups of airtight detection units positioned below the second carrying unit are arranged on the right side of the material distribution unit, and two groups of discharging units connected with the material distribution unit are arranged on the right side of the second carrying unit. Wherein:
the feeding unit consists of a conveying frame butted with the slide, a guide rod positioned on the back of the conveying frame, two belt pulleys arranged between the conveying frame and the guide rod, a round belt connected with the two belt pulleys, a first motor fixed on the conveying frame and driving the belt pulleys, a signal device and a separating device fixed on the conveying frame and a clamping device; the separating device is composed of a separating cylinder fixed on the conveying frame, a door-shaped mounting frame driven by the separating cylinder and two stop pins transversely arranged on an opening in the mounting frame in a staggered mode, and the clamping device is composed of a clamping cylinder fixed on the conveying frame and provided with two clamping claws.
The first carrying unit is composed of a first transverse sliding plate which is arranged on the support through two first transverse sliding rails, a first transverse air cylinder which is fixed on the support and drives the first transverse sliding plate, a first vertical sliding frame which is arranged on the first transverse sliding plate through a first vertical guide rail, a first lifting air cylinder which is fixed on the first transverse sliding plate and drives the first vertical sliding frame, and three first suction discs which are fixed on the first vertical sliding frame through a lifting plate.
The jumping detection unit consists of a first positioning detection assembly and a first clamping assembly, wherein the first positioning detection assembly consists of a first measuring seat fixed on the substrate, a thimble shaft vertically fixed on the first measuring seat, two pairs of positioning bearings positioned above the thimble shaft and arranged on the first measuring seat from top to bottom, an inclined plane detection sensor obliquely fixed on the first measuring seat, and a rod part detection sensor horizontally fixed on the first measuring seat; the first clamping assembly is composed of a first clamping support fixed on the base plate, a first longitudinal slide rail fixed on the first clamping support, a first longitudinal slide plate installed on the first longitudinal slide rail, a first longitudinal cylinder fixed on the first clamping support and driving the first longitudinal slide plate, a second motor and a first pressing wheel fixed on the mounting plate, a belt transmission device connecting the second motor and the first pressing wheel, and a connecting plate fixedly connecting the first longitudinal slide plate and the mounting plate.
The rod diameter detection unit is composed of a second positioning detection assembly and a second clamping assembly; the second positioning detection assembly consists of a positioning support (41-4) fixed on the base plate, a second longitudinal sliding plate arranged on the positioning support through a second longitudinal guide rail, a pneumatic measuring head fixed on the second longitudinal sliding plate through a vertical seat, a supporting rod fixed on the positioning support, and a second longitudinal cylinder fixed on the positioning support and driving the vertical seat, and the second clamping assembly consists of a second clamping support fixed on the base plate, a third longitudinal sliding plate arranged on the second clamping support through a third longitudinal slide rail, a second pressing wheel fixed on the third longitudinal sliding plate, and a third longitudinal cylinder fixed on the second clamping support and driving the third longitudinal sliding plate.
The material distributing unit is composed of a fourth longitudinal slide rail fixed on the bottom plate, two groups of material receiving devices arranged on the fourth longitudinal slide rail through a fourth longitudinal slide plate, and a fourth longitudinal cylinder fixed on the bottom plate and driving the fourth longitudinal slide plate, wherein each material receiving device is composed of an upright post fixed on the fourth longitudinal slide plate and two positioning blocks with positioning holes fixed on the upright post.
The second conveying unit is composed of conveying devices respectively positioned on the front side and the back side of the rack, each conveying device is composed of two second transverse slide rails fixed on the rack, a second transverse slide plate installed on the two second transverse slide rails, a second transverse air cylinder fixed on the rack and driving the second transverse slide plates, two second lifting air cylinders and two second vertical slide rails fixed on the second transverse slide plates, and second suckers respectively installed on the corresponding second vertical slide rails through second vertical sliding frames, and each second lifting air cylinder drives the corresponding second vertical sliding frame.
The air tightness detection unit is composed of two fifth longitudinal slide rails fixed on the second measuring seat, an air tightness positioning seat installed on the two fifth longitudinal slide rails through fifth longitudinal slide plates, a fifth longitudinal air cylinder fixed on the second measuring seat and driving the fifth longitudinal slide plates, a third vertical slide rail fixed on the vertical frame, an air tightness pressure head located above the air tightness positioning seat and installed on the third vertical slide rail through a third vertical slide frame, and a third lifting air cylinder fixed on the vertical frame and driving the third vertical slide frame.
The discharging unit consists of a discharging frame fixed on the base plate and a slideway obliquely fixed on the discharging frame.
The signal device in the technical scheme comprises a sensor fixed on the conveying frame through a fixing plate, an elastic sheet fixed on the sensor, a shifting wheel fixed on the fixing plate and in contact with the elastic sheet, and a shifting lever fixed on the shifting wheel.
In the technical scheme, a limiting plate with the upward-warped left end is fixed on the top surface of the conveying frame, the deflector rod penetrates through a through groove formed in the limiting plate and extends downwards into the limiting plate with the upward-warped left end, and the deflector rod penetrates through a through groove formed in the limiting plate and extends downwards into the space between the guide rod and the circular belt.
In the above technical solution, the first measuring seat is provided with an adjusting mechanism. The adjusting mechanism consists of two guide stand columns fixed on a first measuring seat and four adjusting seats fixed on the two guide stand columns in a clasping manner from top to bottom, and two pairs of positioning bearings, a rod part detection sensor and a thimble shaft are sequentially fixed on the corresponding adjusting seats from top to bottom.
In the technical scheme, the clamping assembly is also provided with a floating pressing mechanism. The floating pressing mechanism is composed of a guide shaft, a support and a first spring, wherein one end of the guide shaft is connected with a piston rod of a first longitudinal cylinder and is provided with a shaft shoulder, the support is fixed on the first longitudinal sliding plate and is used for supporting the guide shaft, and the first spring is installed on the guide shaft and is positioned between the shaft shoulder and the support.
Compared with the prior art, the automatic feeding device has the advantages that due to the adoption of the technical scheme, feeding, testing, workpiece transferring and discharging are automatically completed by machines, the labor intensity is reduced, the detection efficiency is improved, the defects that manual detection errors are large, the manual detection errors are easily influenced by human factors and the like can be effectively avoided, and the automatic feeding device has the advantages of high automation degree, accurate and reliable measurement results and the like.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic perspective view of a feed unit of the present invention;
FIG. 3 is a schematic perspective view of a feed unit spacer of the present invention;
FIG. 4 is a view taken in the direction A of FIG. 3;
FIG. 5 is a schematic perspective view of a clamping device of a feeding unit of the present invention;
FIG. 6 is a schematic perspective view of a first carrying unit according to the present invention;
FIG. 7 is a schematic perspective view of a jitter detection unit according to the present invention;
FIG. 8 is a schematic perspective view of a first positioning detecting assembly of the jitter detecting unit of the present invention;
FIG. 9 is a view from the direction B of FIG. 7;
FIG. 10 is a schematic perspective view of a rod diameter detecting unit according to the present invention;
FIG. 11 is a schematic perspective view of the dispensing unit of the present invention;
FIG. 12 is a schematic perspective view of the dual station transfer unit of the present invention;
FIG. 13 is a schematic perspective view of the air tightness detecting unit according to the present invention;
FIG. 14 is a schematic view of the structure of the airtight positioning seat and the airtight pressure head of the airtight testing unit according to the present invention;
fig. 15 is a schematic perspective view of the discharge unit of the present invention.
In the figure: the device comprises a feeding unit 1, a slide 1-1, a conveying frame 1-2, a sensor 1-3, a fixing plate 1-4, a driving lever 1-5, a mounting frame 1-6, a limiting plate 1-7, a guide rod 1-8, a belt pulley 1-9, a round belt 1-10, a clamping cylinder 1-11, a separating cylinder 1-12, a first motor 1-13, a stop pin 1-14 and a clamping claw 1-15;
the device comprises a first carrying unit 2, a first lifting cylinder 2-1, a first vertical guide rail 2-2, a first transverse sliding plate 2-3, a first vertical sliding frame 2-4, a first sucker 2-5, a lifting plate 2-6, a first transverse cylinder 2-7, a support 2-8 and a first transverse sliding rail 2-9;
the device comprises a bounce detection unit 3, a first positioning detection assembly 31, an adjusting seat 31-1, an inclined plane detection sensor 31-2, a mounting seat 31-3, a positioning bearing 31-4, a guide upright column 31-5, a first measuring seat 31-6, a thimble shaft 31-7, an adjusting block 31-8, a rod part detection sensor 31-9, a first clamping assembly 32, a first longitudinal cylinder 32-1, a first longitudinal slide rail 32-2, a first longitudinal slide plate 32-3, a first spring 32-4, a second motor 32-5, a connecting plate 32-6, a bearing 32-7, a first press wheel 32-8, a driven pulley 32-9, a belt 32-10, a driving pulley 32-11, a mounting plate 32-12, a first clamping bracket 32-13, a support 32-14, a driving pulley 32-11, a mounting plate 32-12, a first clamping bracket 32-13 and a support 32-14, A guide rod 32-15;
the device comprises a rod diameter detection unit 4, a second positioning detection assembly 41, a pneumatic measuring head 41-1, a vertical seat 41-2, a second longitudinal cylinder 41-3, a positioning support 41-4, a second longitudinal sliding plate 4-5, a second longitudinal guide rail 41-6, a supporting rod 41-7, a second clamping assembly 42, a second clamping support 42-1, a third longitudinal cylinder 42-2, a third longitudinal sliding rail 42-3, a third longitudinal sliding plate 42-4 and a second pressure wheel 42-5;
the device comprises a material distribution unit 5, a fourth longitudinal cylinder 5-1, a fourth longitudinal slide rail 5-2, a fourth longitudinal slide plate 5-3, a first proximity switch 5-4, a positioning block 5-5 and an upright post 5-6;
the device comprises a second carrying unit 6, a second lifting cylinder 6-1, a second proximity switch 6-2, a second sucker 6-3, a second vertical sliding frame 6-4, a second transverse sliding plate 6-5, a second vertical sliding rail 6-6, a second transverse sliding rail 6-7, a rack 6-8, a second transverse cylinder 6-9 and a third proximity switch 6-10;
the air tightness detection device comprises an air tightness detection unit 7, an electromagnetic valve 7-1, a vertical frame 7-2, a third vertical slide rail 7-3, a fifth longitudinal slide plate 7-4, an air tightness sensor 7-5, a pressure reducing valve 7-6, a fourth proximity switch 7-7, a second measuring seat 7-8, a fifth longitudinal air cylinder 7-9, a fifth longitudinal slide rail 7-10, an air tightness positioning seat 7-11, an air tightness pressure head 7-12, a third vertical slide frame 7-13, a third lifting air cylinder 7-14, a sealing cover 7-15, a guide rod 7-16, a pressing block 7-17 and a second spring 7-18;
the device comprises a discharging unit 8, a discharging frame 8-1 and a slide way 8-2.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
As shown in fig. 1: the feeding unit 1, the first conveying unit 2 and the second conveying unit 6 are sequentially arranged along the transverse direction, a bounce detection unit 3 and a rod diameter detection unit 4 which are longitudinally arranged are arranged between the feeding unit 1 and the first conveying unit 2, a material distribution unit 5 which is longitudinally arranged is arranged between the first conveying unit 2 and the second conveying unit 6, two groups of air tightness detection units 7 which are longitudinally arranged are arranged on the right side of the material distribution unit and are positioned below the second conveying unit 6, and two groups of discharging units 8 which are transversely arranged and are connected with the material distribution unit are arranged on the right side of the second conveying unit 6. Wherein:
the structure of the feeding unit 1 is shown in figures 2-5: the device comprises a conveying frame 1-2 fixedly butted with a slide 1-1, a guide rod 1-8 fixed on the back of the conveying frame, two belt pulleys 1-9 arranged between the conveying frame 1-2 and the guide rod 1-7, a round belt 1-10 connected with the two belt pulleys 1-9, a first motor 1-13 fixed on the conveying frame 1-2 and driving the belt pulleys 1-9 to rotate by one person, a signal device fixed on the conveying frame 1-2, a separating device and a clamping device. The separating device is composed of a separating cylinder 1-12 fixed on the conveying frame 1-2, a door-shaped mounting frame 1-6 driven by the separating cylinder, and two stop pins 1-14 arranged on the inner crotch of the mounting frame in a transverse dislocation mode. The clamping device is composed of a clamping cylinder 1-11 which is positioned at the right side of the separating device, is fixed on the conveying frame 1-2 and is provided with two clamping claws 1-15.
The first carrying unit 2 is structured as shown in fig. 6: the device comprises two first transverse slide rails 2-9 fixed on a bracket 2-8, a first transverse slide plate 2-3 arranged on the two first transverse slide rails 2-9 through a slide block (not shown in the figure, the lower part is the same), a first transverse cylinder 2-7 fixed on the bracket 2-8 and connected with the first transverse slide plate through a piston rod (not shown in the figure, the lower part is the same), two first vertical guide rails 2-2 fixed on the first transverse slide plate 2-3, a first vertical sliding frame 2-4 arranged on the two first vertical guide rails 2-2 through the slide block, a first lifting cylinder 2-1 fixed on the first transverse slide plate 2-3 and connected with the first vertical sliding frame through the piston rod, and a lifting plate 2-6 fixed on the first vertical sliding frame 2-4, Three first suction cups 2-5 fixed on the lifting plate.
The structure of the jitter detection unit 3 is shown in fig. 7-9: it is composed of a first positioning detection assembly 31 and a first clamping assembly 32 located in front of it. The first positioning detection assembly 31 is composed of a first measurement seat 31-6 fixed on a base plate (not shown in the figure), a thimble shaft 31-7 vertically fixed on the first measurement seat, two pairs of positioning bearings 31-4 located above the thimble shaft and arranged on the first measurement seat 31-6 from top to bottom, an inclined plane detection sensor 31-2 obliquely fixed on the first measurement seat 31-6 through a mounting seat 31-3, and a rod part detection sensor 31-9 horizontally fixed on the first measurement seat 31-6. The first clamping assembly 32 consists of a first clamping bracket 32-13 fixed on the base plate, a first longitudinal slide rail 32-2 fixed on the first clamping bracket, a first longitudinal slide plate 32-3 mounted on the first longitudinal slide rail through a slide block, a first longitudinal cylinder 32-1 fixed on the first clamping bracket 32-13 and connected with the first longitudinal slide plate 32-3 through a piston rod thereof, a second motor 32-5 and a bearing 32-7 fixed on the mounting plate 32-12, a first pressure roller 32-8 mounted in the bearing through a rotating shaft (not marked in the figure), a belt transmission device connecting the second motor 32-5 and the first pressure roller 32-8, and a connecting plate 32-6 fixedly connecting the first longitudinal sliding plate 32-3 and the mounting plate 32-12. The belt transmission device is composed of a driving belt pulley 32-11 which is positioned on the back surface of the mounting plate 32-12 and fixed on the second motor shaft, a driven belt pulley 32-9 which is positioned on the back surface of the mounting plate 32-12 and fixed on the rotating shaft, and a belt 32-10 which connects the driving belt pulley 32-11 and the driven belt pulley 32-9.
In order to adapt to workpieces with different specifications, an adjusting mechanism is arranged on the first measuring seat 31-6. The adjusting mechanism consists of two guide upright columns 31-5 fixed on a first measuring seat 31-6 and four adjusting seats 31-1 fixed on the two guide upright columns 31-5 from top to bottom in a clamping manner; two pairs of positioning bearings 2-4 (each pair is composed of two bearings), a rod part detection sensor 31-9 and a thimble shaft 31-7 are sequentially fixed on each corresponding adjusting seat 31-1 from top to bottom, and the rod part detection sensor 31-9 is positioned between the two pairs of positioning bearings 2-4. In order to adjust the angle and position of the slope detection sensor 31-2, an adjusting block 31-8 is fixed on the mounting seat 31-3.
In order to reduce the impact of the pressing wheel 32-8 on the workpiece and avoid the workpiece from bending, the first clamping assembly 32 is also provided with a floating pressing mechanism. The floating pressing mechanism is composed of a guide shaft 32-15 which is connected with a piston rod of the first longitudinal cylinder 32-1 at one end and is provided with a shaft shoulder 32-16, a support 32-14 which is fixed on the first longitudinal sliding plate 32-3 and is used for supporting the guide shaft 32-15, and a first spring 32-4 which is arranged on the guide shaft 32-15 and is positioned between the shaft shoulder 32-16 and the support 32-14.
The structure of the rod diameter detection unit 4 is shown in fig. 10: it is composed of a second positioning detection assembly 41 and a second clamping assembly 42. The second positioning detection assembly 41 is composed of a positioning bracket 41-4 fixed on the base plate, a second longitudinal guide rail 41-6 fixed on the positioning bracket, a second longitudinal sliding plate 41-5 fixed on the second longitudinal guide rail through a sliding block, a pneumatic measuring head 41-1 fixed on the second longitudinal sliding plate through an upright seat 41-2, a supporting rod 41-7 fixed on the positioning bracket 41-4, and a second longitudinal air cylinder 41-3 fixed on the positioning bracket 41-4 and connected with the upright seat 41-2 through a piston rod of the second longitudinal air cylinder. The second clamping assembly 42 is composed of a second clamping support 42-1 fixed on the base plate, a third longitudinal slide rail 42-3 fixed on the second clamping support, a third longitudinal slide plate 42-4 installed on the third longitudinal slide rail through a slide block, a second pressure wheel 42-5 fixed on the third longitudinal slide plate, and a third longitudinal air cylinder 42-2 fixed on the second clamping support 42-1 and connected with the third longitudinal slide plate 42-4 through a piston rod thereof.
The structure of the material distributing unit 5 is shown in fig. 11: the device comprises a fourth longitudinal slide rail 5-2 fixed on a bottom plate (not shown in the figure), a fourth longitudinal slide plate 5-3 arranged on the fourth longitudinal slide rail through a slide block, two groups of material receiving devices fixed on the fourth longitudinal slide plate, and a fourth longitudinal cylinder 5-1 fixed on the bottom plate and connected with the fourth longitudinal slide plate 5-3 through a piston rod of the fourth longitudinal cylinder. Each group of the material receiving devices consists of an upright post 5-6 fixed on the fourth longitudinal sliding plate 5-3 and two positioning blocks 5-5 with positioning holes (not shown in the figure) fixed on the upright post.
The second carrying unit 6 is structured as shown in fig. 12: it is composed of two sets of carrying devices respectively positioned on the front and back sides of the machine frame 6-8. Each group of the carrying devices comprises two second transverse slide rails 6-7 fixed on a frame 6-8, a second transverse sliding plate 6-5 arranged on the two second transverse slide rails 6-7 through a slide block, a second transverse air cylinder 6-9 fixed on the frame 6-8 and connected with the second transverse sliding plate through a piston rod of the second transverse air cylinder, two second lifting cylinders 6-1 and two second vertical slide rails 6-6 fixed on a second transverse sliding plate 6-5, second vertical sliding frames 6-4 respectively installed on the corresponding second vertical slide rails 6-6 through sliding blocks, and second suction cups 6-3 respectively fixed on the corresponding second vertical sliding frames 6-4, wherein each second lifting cylinder 6-1 is respectively connected with the corresponding second vertical sliding frame 6-4 through a piston rod thereof.
The structure of the airtightness detection unit 7 is shown in fig. 13: the device comprises two fifth longitudinal slide rails 7-10 fixed on a second measuring seat 7-8, a fifth longitudinal slide plate 7-4 arranged on the two fifth longitudinal slide rails 7-10 through a sliding block, an airtight positioning seat 7-11 fixed on the fifth longitudinal slide plate, a fifth longitudinal air cylinder 7-9 fixed on the second measuring seat 7-8 and connected with the fifth longitudinal slide plate 7-4 through a piston rod of the fifth longitudinal air cylinder, a third vertical slide rail 7-3 fixed on a vertical frame 7-2, a third vertical sliding frame 7-13 arranged on the third vertical slide rail through a sliding block, an airtight pressure head 7-12 positioned above the airtight positioning seat 7-11 and fixed on the third vertical sliding frame 7-13, a third lifting air cylinder 7-14 fixed on the vertical frame 7-2 and connected with the third vertical sliding frame 7-13 through a piston rod of the third lifting air cylinder, And an airtight sensor 7-5 fixed on the stand 7-2.
As shown in fig. 14: the airtight positioning seat 7-11 is provided with a funnel-shaped positioning hole (not shown), and a chamfer matched with the conical surface of the air valve (workpiece) is arranged at the upper end hole of the positioning hole.
As shown in fig. 14: the airtight pressure head 7-12 is composed of a sealing cover 7-15 with a concave cavity (not shown) on the lower end surface, an air inlet nozzle (not shown) communicated with the concave cavity and fixed on the outer surface of the sealing cover, a pressure block 7-17 installed in the concave cavity through a guide rod 7-16, a spring 7-18 installed on the pressure block, and a pressure sensing element (not shown) located in the concave cavity and electrically connected with the airtight sensor 7-5.
The structure of the discharge unit 8 is shown in fig. 15: it is composed of a discharging frame 8-1 fixed on a base plate and a slideway 8-2 obliquely fixed on the discharging frame.
In the above embodiment, the signaling device is composed of a fixed plate 1-4 fixed on the conveying frame 1-2, a sensor 1-3 fixed on the fixed plate, a spring (not shown in the figure) fixed on the sensor, a dial wheel (not shown in the figure) supported on the fixed plate 1-4 and contacting with the spring, and a dial rod 1-5 fixed on the dial wheel.
In order to avoid the overlapping of the workpieces (air valves) in the conveying process, a limiting plate 1-7 with the left end tilted upwards is fixed on the top surface of the conveying frame 1-2, and the shifting rod 1-5 penetrates through a through groove (not shown in the figure) formed in the limiting plate and extends downwards into a channel formed between the guide rod 1-8 and the round belt 1-9.
In order to facilitate sensing of the workpiece, a first proximity switch 5-4 is fixed on each upright post 5-6, a second proximity switch 6-2 is fixed on each second vertical sliding frame 6-4, a third proximity switch 6-10 is defined on the front surface and the back surface of the frame 6-8, and a fourth proximity switch 7-7 fixed on a third longitudinal sliding plate 7-4 through a sensor mounting plate (not marked in the figure) is arranged below the airtight pressure head 7-12.
For the convenience of operation, a solenoid valve 7-1 is fixed on the stand 7-2 and is used for controlling the connection and disconnection of a pipeline (not shown in the figure) connecting a gas source (not shown in the figure) and the airtight pressure head 7-12.
In order to avoid the over-high air pressure, a pressure reducing valve 7-6 is fixed on the stand 7-2.
The working principle is as follows:
1) feeding: the workpieces arranged on the slide 1-1 slide to the left end of the conveying frame 1-2, the workpieces move to the position of a signal device along a channel formed by the guide rod 1-8 and the round belt 1-10 under the drive of the round belt 1-8, a poking rod 1-5 and a poking wheel trigger sensor 1-3 are used, and a controller (not shown in the figure) instructs the separation cylinder 1-12 to move, drives one of the stop pins 1-14 to extend out through the mounting frame 1-6, and drives the other stop pin 1-14 to move back. The front workpiece is released for further forward movement (to the right in fig. 1 and 2) by retraction of the stop pin 1-14, while the rear workpiece is stopped by the other stop pin 1-14 being prevented from extending. The piston rods of the separating cylinders 1-12 continuously extend and retract, so that the workpieces can be separated according to the beat.
When the workpiece moves to the position of the clamping device, the piston rods of the clamping cylinders 1-11 retract, the clamping claws 1-15 are closed to clamp the workpiece, and the first conveying unit 2 is waited to transfer the workpiece to the jumping detection unit 3 for detection.
2) Jumping detection feeding: the first lifting cylinder 2-1 drives the three first suction discs 2-5 to move downwards through the first vertical sliding frame 2-4 until the first suction disc 2-5 on the left side sucks the workpiece on the clamping claw 1-15. The piston rod of the first lifting cylinder 2-1 retracts, the first transverse cylinder 2-7 drives the workpiece to move rightwards to the jumping detection unit 3 through the first transverse sliding plate 2-3, the piston rod of the first lifting cylinder 2-1 extends out, the first vertical sliding frame 2-4 drives the three first suction cups 2-5 to move downwards and place the workpiece on a positioning device consisting of a thimble shaft 31-7 and two pairs of positioning bearings 31-4, then the first vertical sliding frame 2-4 is driven by the first lifting cylinder 2-1 to ascend again, the three first suction cups 2-5 move leftwards under the action of the first transverse cylinder 2-7 and return to the starting position, and the jumping detection and feeding are completed.
3) And (3) jumping detection: the first longitudinal cylinder 32-1 drives the first pressure wheel 32-8 to move longitudinally through the first longitudinal sliding plate 32-3 and presses the workpiece between the two pairs of positioning bearings 31-4 to realize the positioning and clamping of the workpiece. Meanwhile, the second motor 32-5 drives the first pressing wheel 32-8 to rotate through a belt transmission device, and the first pressing wheel drives the workpiece to rotate around the axis of the workpiece through friction force. The inclined plane detection sensor 31-2 and the rod part detection sensor 31-9 can automatically detect the jumping of the conical surface and the rod part of the workpiece and judge whether the jumping amount of the workpiece is qualified or not.
4) Jumping detection and unloading: after the jumping detection is finished, the first transverse cylinder 2-9 drives the first vertical sliding frame 2-4 to move rightwards to the jumping detection unit 3 again, the first lifting cylinder 2-1 drives the three first suction discs 2-5 to move downwards until the first suction disc 2-5 positioned in the middle sucks a workpiece on the jumping detection unit 3, and then the piston rod of the first lifting cylinder 2-1 retracts. The first transverse cylinder 2-9 drives the first vertical sliding frame 2-4 to move rightwards to the rod diameter detection unit 4 through the first transverse sliding plate 2-3, the first lifting cylinder 2-1 drives the three first suction cups 2-5 to move downwards through the first vertical sliding frame 2-4 and places workpieces on the supporting rod 41-6, the first vertical sliding frame 2-4 is driven by the first lifting cylinder 2-1 to ascend again, the three first suction cups 2-5 move leftwards under the action of the first transverse cylinder 2-7 and return to the initial position, and jumping detection discharging (rod diameter detection feeding) is completed.
5) Rod diameter detection: the second longitudinal cylinder 41-3 drives the pneumatic measuring head 41-1 to move from front to back through the vertical seat 41-2; meanwhile, the third longitudinal cylinder 42-2 drives the second pressure wheel 42-5 to move from back to front through the third longitudinal sliding plate 42-4 and presses the workpiece onto a V-shaped block (not shown in the figure) of the pneumatic measuring head 41-1 to realize workpiece positioning, and the pneumatic measuring head 41-1 automatically measures the diameter of the valve rod.
6) Rod diameter detection and unloading: after the valve rod diameter is measured, the first lifting cylinder 2-1 drives the three first suction discs 2-5 to move downwards until the first suction disc 2-5 on the right side sucks a workpiece on the rod diameter detection unit 4. The piston rod of the first lifting cylinder 2-1 retracts, the first transverse cylinder 2-7 drives the workpiece to move rightwards to the material distribution unit 5, then the piston rod of the first lifting cylinder 2-1 extends out, the first vertical sliding frame 2-4 drives the three first suction discs 2-5 to move downwards, and the first suction disc 2-5 on the right side places the workpiece in a positioning hole of the positioning block 5-5; the first vertical sliding frame 2-4 is driven by the first lifting cylinder 2-1 to ascend again, the three first suckers 2-5 move leftwards under the action of the first transverse cylinder 2-7 and return to the initial position, and rod diameter detection and discharging are completed.
7) Material distribution: a first proximity switch 5-4 on the first group of material receiving devices instructs a piston rod of a fourth longitudinal cylinder 5-1 to extend out through the controller and sends a workpiece to the position below the carrying device on the front side or the back side of the rack 6-8; in the process, the second group of material receiving devices of the material separating unit 5 moves to the lower part of the first conveying unit 2 along with the first group of material receiving devices and receives the next workpiece. When the first proximity switch 5-4 on the second group of material receiving devices instructs the piston rod of the fourth longitudinal cylinder 5-1 to retract through the controller so as to send the workpiece to the lower part of the carrying device positioned on the back or front of the rack 6-8, the first group of material receiving devices return to the initial position to be ready for receiving the subsequent workpiece.
8) Air tightness detection and feeding: since the second carrying unit 6 is composed of two sets of carrying devices having the same structure and located on the front and back sides of the racks 6 to 8, the operation process of any one set of carrying device can be analyzed.
A third proximity switch 6-10 on the carrying device instructs a piston rod of a second transverse air cylinder 6-9 to retract through a controller, and drives two second lifting air cylinders 6-1 fixed on the third proximity switch to move leftwards to the upper part of a workpiece through a second transverse sliding plate 6-5, the piston rods of the two second lifting air cylinders 6-1 extend out and respectively drive respective second suckers 6-3 to move downwards through corresponding second vertical direction sliding frames 6-4 and suck the workpiece (the second sucker 6-3 on the left side sucks the workpiece on a positioning block 5-5), and then the piston rods of the two second lifting air cylinders 6-1 retract and lift the workpiece; the controller instructs the piston rods of the second transverse cylinders 6-9 to extend to push the second transverse sliding plates 6-5 to move rightwards, and the piston rods of the two second lifting cylinders 6-1 extend to respectively drive the workpiece to descend through the corresponding second suckers 6-3 and release the workpiece (the second sucker 6-3 on the left releases the workpiece in the airtight positioning seat 7-11). After the workpiece is conveyed, the conveying device returns to the initial position to prepare for conveying subsequent workpieces.
9) And (3) air tightness detection: after the workpiece is placed into the airtight positioning seat 7-11 by the carrying device, the controller instructs a piston rod of the fifth longitudinal air cylinder 7-9 to extend out, and the piston rod pushes the fifth longitudinal sliding plate 7-4 to move to the position below the airtight pressure head 7-12; the fourth proximity switch 7-7 instructs a third lifting cylinder 7-14 to drive the airtight pressure head 7-12 to move downwards through a third vertical sliding frame 7-13 through a controller; and pressure gas enters a sealed cavity formed by the airtight positioning seat 7-11 and the airtight pressure head 7-12 through the electromagnetic valve 7-1, and the airtightness of the conical surface of the workpiece can be judged to be qualified or not according to the pressure change of the sealed cavity after the pressure is maintained for a certain time. After the air tightness detection is finished, the third lifting cylinder 7-14 drives the air tightness pressure head 7-12 to ascend to loosen the workpiece, the piston rod of the fifth longitudinal cylinder 7-9 retracts and pulls the fifth longitudinal sliding plate 7-4 to retract to the initial position, and the carrying device waits for unloading.
10) Air tightness detection and unloading: a third proximity switch 6-10 on the carrying device instructs a piston rod of a second transverse air cylinder 6-9 to extend through a controller, and drives two second lifting air cylinders 6-1 fixed on the third proximity switch to move leftwards to the upper part of a workpiece through a second transverse sliding plate 6-5, the piston rods of the two second lifting air cylinders 6-1 extend out and respectively drive respective second suckers 6-3 to move downwards through corresponding second vertical direction sliding frames 6-4 and suck the workpiece (the second sucker 6-3 on the right side sucks the workpiece in an airtight positioning seat 7-11, the second sucker 6-3 on the left side sucks the workpiece on a positioning block 5-5), and then the piston rods of the two second lifting air cylinders 6-1 retract and lift the workpiece; the controller instructs the piston rods of the second transverse cylinders 6-9 to retract so as to pull the second transverse sliding plates 6-5 to move rightwards, then the piston rods of the two second lifting cylinders 6-1 extend out and respectively drive the workpiece to descend through the corresponding second suckers 6-3, and the workpiece is released (the left second suckers 6-3 release the workpiece in the airtight positioning seats 7-11, and the right second suckers 6-3 release the workpiece in the slide ways 7-2 of the unloading unit 7). After the workpiece is conveyed, the conveying device returns to the initial position to prepare for conveying subsequent workpieces.

Claims (5)

1. The multifunctional double-station automatic detection device for the valve comprises a feeding unit (1), a first carrying unit (2) and a second carrying unit (6) which are sequentially arranged along the transverse direction, wherein a bounce detection unit (3) and a rod diameter detection unit (4) are arranged between the feeding unit (1) and the first carrying unit (2), a material distribution unit (5) is arranged between the first carrying unit (2) and the second carrying unit (6), two groups of airtight detection units (7) positioned below the second carrying unit (6) are arranged on the right side of the material distribution unit, and two groups of unloading units (8) connected with the material distribution unit are arranged on the right side of the second carrying unit (6); the method is characterized in that:
the feeding unit (1) is composed of a conveying frame (1-2) butted with the slide (1-1), a guide rod (1-8) positioned on the back of the conveying frame, two belt pulleys (1-9) arranged between the conveying frame (1-2) and the guide rod (1-8), a round belt (1-10) connected with the two belt pulleys (1-9), a first motor (1-13) fixed on the conveying frame (1-2) and driving the belt pulleys (1-9), a signal device fixed on the conveying frame (1-2), a separating device and a clamping device; the separating device is composed of a separating cylinder (1-12) fixed on the conveying frame (1-2), a door-shaped mounting frame (1-6) driven by the separating cylinder and two stop pins (1-14) transversely arranged on the open crotch in the mounting frame in a staggered manner, and the clamping device is composed of a clamping cylinder (1-11) fixed on the conveying frame (1-2) and provided with two clamping claws (1-15);
the first carrying unit (2) is composed of a first transverse sliding plate (2-3) which is arranged on a support (2-8) through two first transverse sliding rails (2-9), a first transverse cylinder (2-7) which is fixed on the support (2-8) and drives the first transverse sliding plate, a first vertical sliding frame (2-4) which is arranged on the first transverse sliding plate (2-3) through a first vertical guide rail (2-2), three first suckers (2-5) which are fixed on the first vertical sliding frame through lifting plates (2-6), and a first lifting cylinder (2-1) which is fixed on the first transverse sliding plate (2-3) and drives the first vertical sliding frame (2-4);
the bounce detection unit (3) is composed of a first positioning detection assembly (31) and a first clamping assembly (32), wherein the first positioning detection assembly (31) is composed of a first measurement seat (31-6) fixed on a substrate, a thimble shaft (31-7) vertically fixed on the first measurement seat, two pairs of positioning bearings (31-4) positioned above the thimble shaft and arranged on the first measurement seat (31-6) from top to bottom, an inclined plane detection sensor (31-2) obliquely fixed on the first measurement seat (31-6), and a rod part detection sensor (31-9) horizontally fixed on the first measurement seat (31-6); the first clamping assembly (32) consists of a first clamping support (32-13) fixed on the base plate, a first longitudinal slide rail (32-2) fixed on the first clamping support, a first longitudinal slide plate (32-3) installed on the first longitudinal slide rail, a first longitudinal cylinder (32-1) fixed on the first clamping support (32-13) and driving the first longitudinal slide plate (32-3), a second motor (32-5) and a first pressure roller (32-8) fixed on the mounting plate (32-12), a belt transmission device connecting the second motor (32-5) and the first pressure roller (32-8), and a connecting plate (32-6) fixedly connecting the first longitudinal slide plate (32-3) and the mounting plate (32-12);
the rod diameter detection unit (4) is composed of a second positioning detection component (41) and a second clamping component (42); the second positioning detection assembly (41) consists of a positioning bracket (41-4) fixed on the base plate, a second longitudinal sliding plate (41-5) arranged on the positioning bracket through a second longitudinal guide rail (41-6), a pneumatic measuring head (41-1) fixed on the second longitudinal sliding plate through a vertical seat (41-2), a supporting rod (41-7) fixed on the positioning bracket (41-4), and a second longitudinal air cylinder (41-3) fixed on the positioning bracket (41-4) and driving the vertical seat (41-2), the second clamping assembly (42) consists of a second clamping bracket (42-1) fixed on the base plate, a third longitudinal sliding plate (42-4) arranged on the second clamping bracket through a third longitudinal sliding rail (42-3), a second pressure wheel (42-5) fixed on the third longitudinal sliding plate, and a second pressure wheel, A third longitudinal air cylinder (42-2) which is fixed on the second clamping bracket (42-1) and drives a third longitudinal sliding plate (42-4);
the material distribution unit (5) is composed of a fourth longitudinal slide rail (5-2) fixed on the bottom plate, two groups of material receiving devices arranged on the fourth longitudinal slide rail through a fourth longitudinal slide plate (5-3), and a fourth longitudinal cylinder (5-1) fixed on the bottom plate and driving the fourth longitudinal slide plate (5-3), wherein each material receiving device is composed of an upright post (5-6) fixed on the fourth longitudinal slide plate (5-3) and two positioning blocks (5-5) with positioning holes fixed on the upright post;
the second carrying unit (6) is composed of carrying devices respectively positioned at the front and the back of the machine frame (6-8), each carrying device is composed of two second transverse slide rails (6-7) fixed on the machine frame (6-8), a second transverse slide plate (6-5) arranged on the two second transverse slide rails, and a second transverse cylinder (6-9) fixed on the machine frame (6-8) and driving the second transverse slide plate, two second lifting cylinders (6-1) and two second vertical slide rails (6-6) which are fixed on a second transverse sliding plate (6-5), and second suckers (6-3) which are respectively arranged on the corresponding second vertical slide rails (6-6) through second vertical sliding frames (6-4), wherein each second lifting cylinder (6-1) respectively drives the corresponding second vertical sliding frame (6-4);
the air tightness detection unit (7) consists of two fifth longitudinal slide rails (7-10) fixed on the second measuring seat (7-8), an air tightness positioning seat (7-11) arranged on the two fifth longitudinal slide rails (7-10) through a fifth longitudinal slide plate (7-4), and a fifth longitudinal cylinder (7-9) fixed on the second measuring seat (7-8) and driving the fifth longitudinal slide plate (7-4), a third vertical slide rail (7-3) fixed on the vertical frame (7-2), an airtight pressure head (7-12) positioned above the airtight positioning seat (7-11) and installed on the third vertical slide rail (7-3) through a third vertical sliding frame (7-13), and a third lifting cylinder (7-14) fixed on the vertical frame (7-2) and driving the third vertical sliding frame (7-13);
the discharging unit (8) is composed of a discharging frame (8-1) fixed on the base plate and a slide way (8-2) obliquely fixed on the discharging frame.
2. The multifunctional double-station automatic valve detection device according to claim 1, characterized in that: the signal device is composed of a sensor (1-3) fixed on the conveying frame (1-2) through a fixing plate (1-4), a spring plate fixed on the sensor, a shifting wheel fixed on the fixing plate (1-4) and in contact with the spring plate, and a shifting lever (1-5) fixed on the shifting wheel.
3. The multifunctional double-station automatic valve detection device according to claim 1, characterized in that: a limiting plate (1-7) with the left end tilted upwards is fixed on the top surface of the conveying frame (1-2), and the deflector rod (1-5) penetrates through a through groove formed in the limiting plate and extends downwards into a space between the guide rod (1-8) and the round belt (1-10).
4. The multifunctional double-station automatic valve detection device according to claim 1, characterized in that: the first measuring seat (31-6) is provided with an adjusting mechanism, the adjusting mechanism is composed of two guide upright posts (31-5) fixed on the first measuring seat (31-6) and four adjusting seats (31-1) fixed on the two guide upright posts (31-5) from top to bottom in a clamping manner, and two pairs of positioning bearings (31-4), rod part detecting sensors (31-8) and thimble shafts (31-7) are sequentially fixed on the corresponding adjusting seats (31-1) from top to bottom.
5. The multifunctional double-station automatic valve detection device according to claim 1, characterized in that: the first clamping assembly (32) is also provided with a floating pressing mechanism, and the floating pressing mechanism consists of a guide shaft (32-15) with one end connected with a piston rod of the first longitudinal cylinder (32-1) and provided with a shaft shoulder (32-16), a support (32-14) fixed on the first longitudinal sliding plate (32-3) and used for supporting the guide shaft (32-15), and a first spring (32-4) arranged on the guide shaft (32-15) and positioned between the shaft shoulder (32-16) and the support (32-14).
CN202210304619.6A 2022-03-21 2022-03-21 Multifunctional double-station automatic detection device for valve Pending CN114674259A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210304619.6A CN114674259A (en) 2022-03-21 2022-03-21 Multifunctional double-station automatic detection device for valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210304619.6A CN114674259A (en) 2022-03-21 2022-03-21 Multifunctional double-station automatic detection device for valve

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CN114674259A true CN114674259A (en) 2022-06-28

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020080698A1 (en) * 2000-11-07 2002-06-27 Turner Christopher J. System and method for controlling spin speed of media in an optical disc drive
CN105665294A (en) * 2016-03-21 2016-06-15 贵阳瑞极精密测量有限公司 Device for measuring diameter of valve rod
CN105665293A (en) * 2016-04-14 2016-06-15 贵阳瑞极精密测量有限公司 Full-automatic valve rod detecting equipment
CN205404056U (en) * 2016-03-11 2016-07-27 贵阳瑞极精密测量有限公司 Valve stem air tightness testing device
CN205550887U (en) * 2016-04-14 2016-09-07 贵阳瑞极精密测量有限公司 Full automated inspection equipment of valve stem

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020080698A1 (en) * 2000-11-07 2002-06-27 Turner Christopher J. System and method for controlling spin speed of media in an optical disc drive
CN205404056U (en) * 2016-03-11 2016-07-27 贵阳瑞极精密测量有限公司 Valve stem air tightness testing device
CN105665294A (en) * 2016-03-21 2016-06-15 贵阳瑞极精密测量有限公司 Device for measuring diameter of valve rod
CN105665293A (en) * 2016-04-14 2016-06-15 贵阳瑞极精密测量有限公司 Full-automatic valve rod detecting equipment
CN205550887U (en) * 2016-04-14 2016-09-07 贵阳瑞极精密测量有限公司 Full automated inspection equipment of valve stem

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