CN110836751B - Lower switch valve device for detecting air tightness of precise three-way valve - Google Patents
Lower switch valve device for detecting air tightness of precise three-way valve Download PDFInfo
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- CN110836751B CN110836751B CN201911198815.4A CN201911198815A CN110836751B CN 110836751 B CN110836751 B CN 110836751B CN 201911198815 A CN201911198815 A CN 201911198815A CN 110836751 B CN110836751 B CN 110836751B
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
Abstract
The invention relates to the field of valve switches. A lower switch valve device for detecting the air tightness of a precise three-way valve comprises an up-and-down moving mechanism, a clamping mechanism and a valve switch mechanism; the clamping mechanism comprises an installation box, a rotating shaft, a chuck, a coupling and a clamping cylinder; the rotary shaft is vertically arranged in the installation box, an outer shell is sleeved outside the rotary shaft and is conical, and a clamping groove for a chuck is formed in the upper part of the outer shell; the upper part of the rotating shaft is provided with a chuck in a sliding way, the chuck is positioned in the outer shell, and the shape of the top of the chuck corresponds to that of the clamping groove; the lower part of the rotating shaft is connected with a coupler; the lower part of the coupler is provided with a clamping cylinder, the valve opening and closing mechanism is arranged on the upper part of the clamping mechanism and is used for rotating the clamping mechanism to open or close the valve. The three-way valve has the technical effects that the clamping cylinder pulls the rotating shaft downwards to enable the clamping head to move downwards, and the upper part of the clamping head is tightened through the clamping groove to clamp the three-way valve, so that the follow-up valve is convenient to open and close.
Description
Technical Field
The invention relates to the field of valve opening and closing, in particular to a lower opening and closing valve device for detecting the air tightness of a precise three-way valve.
Background
The structure of the existing valve airtightness detection device, such as a gas cylinder valve airtightness detection machine disclosed in the chinese patent publication No. CN107860535A (published as 2018.03.30), includes a frame, a triangular fixing frame, a chassis, a column, a pressure gauge, a support rod, a clamping portion, a press, an alarm, a support panel, a fixed block, a valve airtightness detection device, a monitor, a hydraulic controller, and a display screen.
And the valve needs to be opened or closed during the air tightness detection so as to facilitate the air tightness detection. An existing switch valve device, for example, a device for automatically opening and closing a valve disclosed in chinese utility model patent publication No. CN203641640U (publication No. 2014.06.11), includes a motor and a jaw, and is characterized in that: the measuring device is characterized by further comprising a fluted disc and a sensor used for measuring the rotating quantity of the fluted disc, the fluted disc is connected with the motor, gear teeth of the fluted disc are matched with the sensor, and the clamping jaws are fixed on the fluted disc.
However, the above-described switching valve device has the following problems: the jack catch can not guarantee to press from both sides tight valve when rotatory valve, and the jack catch phenomenon that drops appears easily when rotatory valve.
Disclosure of Invention
In order to solve the problem that the conventional valve opening and closing device is easy to fall off when the valve is rotated, a first object of the present invention is to provide a lower opening and closing valve device for detecting the air tightness of a precision three-way valve, which clamps the valve by a clamping mechanism and then rotates the valve.
For the first purpose of the invention, the following technical scheme is adopted: a lower switch valve device for detecting the air tightness of a precise three-way valve comprises an up-and-down moving mechanism, a clamping mechanism and a valve switch mechanism; the clamping mechanism is arranged on the up-down moving mechanism and is used for clamping the lower part of the valve; the clamping mechanism comprises an installation box, a rotating shaft, a chuck, a coupling and a clamping cylinder; the mounting box is slidably mounted on the upper part of a moving frame of the up-and-down moving mechanism through a connecting plate; the rotary shaft is vertically arranged in the installation box, an outer shell is sleeved outside the rotary shaft and is conical, and a clamping groove for a chuck is formed in the upper part of the outer shell; the upper part of the rotating shaft is provided with a chuck in a sliding way, the chuck is positioned in the outer shell, and the shape of the top of the chuck corresponds to that of the clamping groove; the lower part of the rotating shaft is connected with a coupler; the lower part of the coupler is provided with a clamping cylinder, the clamping cylinder pulls the rotating shaft downwards to enable the chuck to move downwards, and the upper part of the chuck is tightened through a clamping groove to clamp the three-way valve; the valve opening and closing mechanism is arranged on the upper part of the clamping mechanism and is used for rotating the clamping mechanism to open or close the valve.
Preferably, the up-down moving mechanism comprises a fixed frame, an up-down moving cylinder, a moving frame, a guide block, an auxiliary cylinder and a fine-tuning cylinder; the fixed frame is provided with a guide post, and the lower part of the fixed frame is provided with an up-down moving cylinder; the lower end of the moving frame is connected with an up-down moving cylinder; the guide block is arranged at the lower part of the movable frame, and two ends of the guide block are sleeved on the guide columns; the auxiliary cylinder is arranged in front of the guide block and is used for compressing the guide block and the moving frame; the fine setting cylinder install in the removal frame middle part through fine setting cylinder mounting panel, fine setting cylinder output and install bin sub-unit connection.
Preferably, the valve opening and closing mechanism is arranged at the upper part of the clamping mechanism and is used for rotating the clamping mechanism to open or close the valve; the valve switching mechanism comprises a valve switching cylinder, an adapter plate, a rack and a gear; the valve switch cylinder is transversely arranged on the clamping mechanism through a valve switch cylinder mounting plate; one end of the adapter plate is arranged at the output end of the valve switch cylinder, the other end of the adapter plate is connected with a rack (the left end of the adapter plate is connected with the rack, the rack is transversely arranged in the installation box, two ends of the rack are respectively provided with a guide sleeve, the gear is fixedly arranged on the rotating shaft, and the gear is meshed with the rack.
The invention also aims to provide a precision three-way valve airtightness detection device.
A precision three-way valve airtightness detection device comprises a frame, a jig tool, a jig moving and positioning device, a lower switch valve device and a detection device; the jig tool is arranged on the jig moving and positioning device and is provided with a plurality of jig mechanisms for installing the three-way valve; the jig moving and positioning device is arranged on the rack and used for moving and positioning the jig tool; the lower switch valve device adopts the lower switch valve device for detecting the air tightness of the precision three-way valve; the detection device is installed on the upper portion of the rack and connected with the jig tool, and the detection device is used for detecting the air tightness of the valve.
In conclusion, the invention has the technical effects that the movable frame is pushed to ascend by the up-and-down moving cylinder to primarily adjust the position of the chuck, then the chuck is finely adjusted by the fine adjusting cylinder, so that the lower part of the valve is accurately wrapped by the chuck, then the chuck of the clamping cylinder moves downwards, and the lower part of the valve is clamped by the clamping groove, thereby ensuring the accuracy of clamping, and facilitating the subsequent closing and air tightness detection of the valve; the gear drives the rotating shaft to rotate, so that the chuck rotates to close the valve of the three-way valve, the valve is ingeniously closed, and subsequent air tightness detection is facilitated.
Drawings
Fig. 1 is a schematic structural diagram of a precision three-way valve airtightness detection apparatus.
Fig. 2 is a schematic structural diagram of the jig mechanism.
Fig. 3 is a schematic structural view of the jig.
Fig. 4 is a schematic structural view of the jig moving and positioning device.
Fig. 5 is a schematic structural view of the pressing and fixing mechanism.
Fig. 6 is a schematic structural view of a lower on-off valve device.
Fig. 7 is a schematic structural view of the detection mechanism.
Fig. 8 is a schematic structural diagram of a three-way valve.
Detailed Description
As shown in fig. 1, the precision three-way valve airtightness detection equipment comprises a frame 1, a jig tool 2, a jig moving and positioning device 3, a lower switch valve device 4 and a detection device 5. Jig tool 2 is installed on jig mobile positioning device 3, and jig tool 2 includes jig mounting panel 201 and four jig mechanisms 20 that are used for installing the three-way valve on it, and a plurality of jig mechanisms 20 can reduce the last unloading number of times of three-way valve, improve the efficiency that detects. The jig moving and positioning device 3 is arranged on the rack 1, and the jig moving and positioning device 3 is used for moving and positioning the jig tool 2. The lower opening/closing valve device 4 includes an up-and-down moving mechanism 41, a clamping mechanism 42, and a valve opening/closing mechanism 43. The up-down moving mechanism 41 is provided in the frame 1. The clamping mechanism 42 is arranged on the up-down moving mechanism 41, the clamping mechanism 42 moves up and down through the up-down moving mechanism 41, so that the three-way valve is clamped conveniently, and the clamping mechanism 42 is positioned right below the jig mechanism 20. A valve opening and closing mechanism 43 is installed at an upper portion of the clamping mechanism 42, and the valve opening and closing mechanism 43 is used for rotating the clamping mechanism 42 to open or close a valve in the three-way valve. Detection device 5 installs and links up with the tool frock on 1 upper portion of frame, and detection device 5 is used for detecting the gas tightness of valve.
As shown in fig. 2 and 3, there are four jig mechanisms 20, and the four jig mechanisms 20 are horizontally and uniformly disposed on the jig mounting plate 201. The jig mechanism 20 includes a first mounting plate 21, a second mounting plate 22, a jig 23, and a pressing mechanism 24. The rear portion of the first mounting plate 21 is mounted on the jig mounting plate 201, and the front portion of the first mounting plate 21 is mounted with the jig 23. The up end at first mounting panel 21 and tool 23 is installed to second mounting panel 22, and second mounting panel 22 middle part has the arc wall 221 that is used for installing the valve upper portion, and the installation of tee bend valve door is convenient for in the arc design of arc wall 221, and the left end of second mounting panel 22 is bent down and is formed the boss, and the boss is used for installing hold-down mechanism 24, and the tee bend valve door is fixed to the hold-down mechanism 24 edgewise of being convenient for. The left half part of the jig 23 is provided with a mounting groove 231 for mounting the three-way valve, and the right side of the mounting groove 231 is arc-shaped, so that the three-way valve can be mounted conveniently. The lower part of the left side of the mounting groove 231 is a straight groove, the straight groove is used for guiding when the three-way valve enters the mounting groove 231, the lower part of the left side of the mounting groove 231 is provided with a first positioning table 232 used for mounting and positioning the three-way valve, and the upper end face of the first positioning table 232 is used for positioning. A second positioning table 233 is left above the front part of the jig 23, and the left end surface of the second positioning table 233 is used for positioning. The three-way valve is vertically installed in the jig 23 through the installation groove 231, the first positioning table 232 and the second positioning table 233; the upper portion of the right portion of the jig 23 is an inclined plane 234, the inclined plane 234 is provided with a detection groove 2341, and the detection device 5 can conveniently enter the jig 23 through the detection groove 2341 to detect the air tightness of the three-way valve.
When the three-way valve is installed, the three-way valve enters the right end of the installation groove 231 along the straight groove, the middle part of the three-way valve is positioned through the first positioning table 232, then the three-way valve is rotated, the right end of the three-way valve is positioned through the second positioning table 233, and finally the three-way valve is compressed by the compressing mechanism 24 and then is installed in the installation groove 231.
The jig mechanism 20 solves the problem that the three-way valve is difficult to install and position, and the jig mechanism 20 is provided with a straight groove through the left end of the installation groove 231 for guiding during installation, so that the valve is convenient to install; the valve is positioned by the first positioning table 232 and the second positioning table 233, so that the positioning accuracy is ensured, and the valve is pressed by the pressing mechanism 24, so that the valve is prevented from moving in subsequent operation, and the subsequent operation is facilitated.
The compression mechanism 24 includes a first compression handle 241, a first hinge block 242, a stationary block 243, and a compression bar 244. The first pressing handle 241 is L-shaped. The left end of the first hinge block 242 is hinged to the left end of the lower portion of the first pressing handle 241, and the right end of the first hinge block 242 is hinged to the fixing block 243. The fixing block 243 is fixedly mounted on the boss at the left end of the second mounting plate 22. The pressing rod 244 is slidably disposed in the fixing block 243, the left end of the pressing rod 244 is hinged to the right end of the lower portion of the first pressing handle 241, and the rear end of the pressing rod 244 extends into the fixture 23 to press the valve.
When the pressing mechanism 24 is actuated, the first pressing handle 241 is rotated to the right, and the pressing rod 244 moves to the right along the fixing block 243 under the action of the first pressing handle 241 and the first hinge block 242, so as to press the three-way valve in the mounting groove 231 of the jig 23. When the valve is loosened, the first pressing handle 241 is rotated to the left, so that the three-way valve can be loosened.
The pressing mechanism 24 solves the problem that the three-way valve is difficult to fix in the jig 23, and the pressing mechanism 24 has the advantages that the pressing rod 244 is pressed against the three-way valve through the matching of the first pressing handle 241 and the first hinging block 242, so that the operation is simple, and the three-way valve is effectively fixed.
As shown in fig. 4, the jig moving and positioning device 3 includes a positioning frame 31, a moving mechanism 32, a positioning mechanism 33, and a pressing and fixing mechanism 34. The positioning frame 31 is provided on the frame 1. The moving mechanism 32 includes a guide rail 321 and a slider 322. The guide rail 321 is transversely mounted on the positioning frame 31. The sliding block 322 is slidably mounted on the guide rail 321, the fixture mounting plate 3221 is mounted at the front end of the sliding block 322, four positioning holes 32211 are arranged at the upper part of the fixture mounting plate 3221, and the four positioning holes 32211 correspond to the four fixture mechanisms 20 in position, so that the fixture mechanisms 20 are conveniently positioned, and the subsequent clamping of the lower part of the three-way valve is facilitated. The structure of the positioning mechanism 33 is the same as that of the pressing mechanism 24, the positioning mechanism 33 is arranged on the upper portion of the positioning frame 31, and the positioning mechanism 33 positions the jig tool 2 through the positioning hole 32211, so that the positioning accuracy is improved. The number of the pressing and fixing mechanisms 34 is three, and the three pressing and fixing mechanisms 34 are uniformly arranged on the upper portion of the jig tool mounting plate 3221.
When the jig moving and positioning device 3 moves, the slider 322 moves the jig tool mounting plate 3221 to initially align the positioning hole 32211 with the positioning mechanism 33, and the positioning mechanism 33 is pulled to enable the positioning mechanism 33 to pass through the positioning hole 32211 on the jig tool mounting plate 3221 to perform accurate positioning.
The jig moving positioning device 3 solves the positioning problem of the jig tool mounting plate 3221, and the jig moving positioning device 3 has the advantages that the jig tool mounting plate 3221 is positioned by the positioning mechanism 33 penetrating through the positioning holes 32211, so that the positioning accuracy is ensured, and the positioning efficiency is improved.
As shown in fig. 5, the pressing and fixing mechanism 34 includes a fixing base 341, a second pressing handle 342, a second hinge block 343, a pressing plate 344, and a pressing head 345. The fixing seat 341 is installed on the upper portion of the fixture tool mounting plate 3221, and a short rod 3411 is arranged in the middle of the fixing seat 341. The upper end of the second pressing handle 342 is hinged at the left end of the upper part of the fixed seat 341. The upper end of the second hinged block 343 is hinged to the middle of the second pressing handle 342, the middle of the second hinged block 343 is hinged to a guide plate 3431, the right end of the guide plate 3431 is arc-shaped, the right end of the guide plate 3431 is connected with the short rod 3411, and the lower end of the second hinged block 343 is hinged to the middle of the pressing plate 344. The upper end of the pressing plate 344 is hinged to the middle of the fixed seat 341, and the lower end of the pressing plate 344 is provided with a pressing head 345.
When the pressing and fixing mechanism 34 is actuated, the second pressing handle 342 is rotated downward, the pressing plate 344 is rotated rightward through the second hinge block 343, and the pressing head 345 at the lower part of the pressing plate 344 presses and fixes the jig tool 2 onto the jig tool mounting plate 3221.
The pressing and fixing mechanism 34 solves the problem of fixing the jig tool 2, the pressing and fixing mechanism 34 has the advantages that the pressing action is realized through the hinging among the second pressing handle 342, the second hinging block 343 and the pressing plate 344, the operation is simple, and meanwhile, the three pressing and fixing mechanisms 34 simultaneously press the jig tool mounting plate 3221, so that the pressing reliability is ensured.
As shown in fig. 6, the up-down moving mechanism 41 includes a fixed frame 411, an up-down moving cylinder 412, a moving frame 413, a guide block 414, an auxiliary cylinder 415, and a fine adjustment cylinder 416. The fixed frame 411 is provided with a guide post 4111, and the lower part of the fixed frame 411 is provided with an up-down moving cylinder 412. The lower end of the moving frame 413 is connected to an up-and-down moving cylinder 412. The guide block 414 is disposed at the lower portion of the movable frame 413, two ends of the guide block 414 are sleeved on the guide posts 4111, and the guide block 414 is used for guiding the movable frame 413 during movement. The auxiliary cylinder 415 is installed in front of the guide block 414, and the auxiliary cylinder 415 is used for pressing the guide block 414 and the moving frame 413. The fine adjustment cylinder 416 is installed at the middle of the moving frame 413 by a fine adjustment cylinder installation plate 4161.
When the vertical movement mechanism 41 is operated, the vertical movement cylinder 412 pushes the moving frame 413 to move upward, the auxiliary cylinder 415 and the guide block 414 perform a guiding function when the vertical movement cylinder rises, and when the lower portion of the three-way valve enters the clamping mechanism 42, the moving frame 413 stops moving, and the fine adjustment cylinder 416 moves the clamping mechanism 42 to move the clamping mechanism 42 to a predetermined position.
The up-down moving mechanism 41 solves the problem of up-down movement of the clamping mechanism 42, and the up-down moving mechanism 41 has the advantages that the position of the clamping mechanism 42 is roughly adjusted by the up-down moving cylinder 412, and then the clamping mechanism 42 is finely adjusted by the fine adjusting cylinder 416 so that the clamping mechanism 42 can conveniently clamp the lower part of the three-way valve.
The clamping mechanism 42 includes a mounting case 421, a rotary shaft 422, a collet 423, a coupling 424, and a clamping cylinder 425. The mounting box 421 is slidably mounted on the upper portion of the moving frame 413 through a connecting plate, and the lower portion of the mounting box 421 is connected with the output end of the upper portion of the fine adjustment cylinder 416. The rotating shaft 422 is vertically arranged inside the mounting box 421, an outer shell 4221 is sleeved outside the rotating shaft 422, the outer shell 4221 is conical, and a clamping groove 4222 for the clamping head 423 is formed in the upper portion of the outer shell 4221. The upper part of the rotating shaft 422 is slidably provided with a clamping head 423, the clamping head 423 is positioned in the outer shell 4221, and the top of the clamping head 423 is shaped corresponding to the clamping groove 4222. The lower part of the rotating shaft 422 is connected with a coupling 424. A clamping cylinder 425 is mounted below the coupling 424.
When the clamping mechanism 42 is actuated, the clamping cylinder 425 pulls the rotating shaft 422 downward, so that the collet 423 moves downward, and the upper portion of the collet 423 is tightened by the clamping groove 4222 in the outer housing 4221 to clamp the three-way valve.
The clamping mechanism 42 solves the problem of clamping the three-way valve, and the clamping mechanism 42 has the advantages that the shape of the clamping groove 4222 corresponds to the shape of the upper part of the clamping head 423, and the upper part of the clamping head 423 is tightened by pulling the clamping head 423 downwards, so that the lower part of the three-way valve is clamped.
The valve switching mechanism 43 includes a valve switching cylinder 431, an adapter plate 432, a rack 433, and a pinion 434. The valve switch cylinder 431 is mounted laterally on the mounting case 421 by a valve switch cylinder mounting plate 4311. One end of the adapter plate 432 is installed at the output end of the valve switch cylinder 431, and the other end of the adapter plate 432 is connected with the left end of the rack 433. Rack 433 transversely installs inside install bin 421, and rack 433 both ends all are equipped with uide bushing 4331. The gear 434 is fixedly installed on the rotating shaft 422, and the gear 434 is engaged with the rack 433.
When the valve switching mechanism 43 operates, the valve switching cylinder 431 drives the adapter plate 432 to move the rack 433 to the right, the gear 434 rotates along with the rack 433, the gear 434 drives the rotating shaft 422 to rotate, the chuck 423 is rotated, and the valve of the three-way valve is closed.
The valve opening and closing mechanism 43 solves the problem of valve closing, the valve opening and closing mechanism 43 has the advantages that the rotating shaft 422 rotates through the meshing of the gear 434 and the rack 433, the effect of valve closing is achieved, the structure is ingenious, and the action is controlled through the valve opening and closing cylinder 431, so that the action reliability is guaranteed.
When the lower switch valve device 4 is operated, the up-down moving cylinder 412 pushes the moving frame 413 to ascend, the auxiliary cylinder 415 and the guide block 414 play a role in guiding when ascending, when the lower part of the three-way valve enters the inside of the clamping head 423, the moving frame 413 stops moving, and the clamping mechanism 42 is moved through the fine adjustment cylinder 416 to enable the clamping head 423 to move to a specified position; then the clamping cylinder 425 pulls the rotating shaft 422 downwards to enable the clamping head 423 to move downwards, and the upper part of the clamping head 423 is tightened through a clamping groove 4222 on the outer shell 4221 to clamp the three-way valve; after clamping, the valve switch cylinder 431 drives the adapter plate 432 to enable the rack 433 to move rightwards, the gear 434 rotates along with the rack 433, and the gear 434 drives the rotating shaft 422 to rotate, so that the chuck 423 rotates to close the valve of the three-way valve.
The lower switch valve device 4 solves the problem that the lower part of the valve is difficult to accurately fix and control the valve to open and close, and the lower switch valve device 4 has the advantages that the moving frame 413 is pushed by the up-and-down moving cylinder 412 to ascend to preliminarily adjust the position of the chuck 423, the chuck 423 is finely adjusted by the fine adjusting cylinder 416 to accurately wrap the lower part of the valve by the chuck 423, then the chuck 425 moves downwards, the lower part of the valve is clamped by the clamping groove 4222, the clamping accuracy is ensured, and the subsequent closing and air tightness detection of the valve are facilitated; the gear 434 drives the rotating shaft 422 to rotate, so that the chuck 423 rotates to close the three-way valve, the valve is skillfully closed, and subsequent air tightness detection is facilitated.
As shown in fig. 7, the detection device 5 includes a detection support frame 51 and a detection mechanism 52. The detection support frame 51 is arranged on the machine frame 1, four detection stations are arranged in the detection support frame 51, the first station is arranged above the detection support frame 51, the second station and the third station are arranged on the side surface of the middle part of the detection support frame 51, and the fourth station is arranged on the lower part of the detection support frame 51. There are four detection mechanisms 52, and the four detection mechanisms 52 are respectively located at four stations. The detection mechanism 52 includes a detection cylinder 521, a detection cylinder mounting plate 522, two detection guide rods 523, and a detection element 524. The detection cylinder 521 is mounted on the detection support frame 51 through the detection cylinder mounting plate 522, the two detection guide rods 523 are arranged on the detection cylinder mounting plate 522, the two detection guide rods 523 are fixed through the guide rod connecting plate 5231, and the detection guide plate 5232 is further arranged between the two detection guide rods 523. The detecting element 524 is installed on the guide rod connection plate 5231, and the detecting element 524 performs airtightness detection by detecting the contact of the cylinder 521 and the three-way valve.
When the detection mechanism 52 is actuated, the detection cylinder 521 pushes the guide rod connection plate 5231, the guide rod connection plate 5231 drives the detection element 524 thereon to move towards the valve, and the detection guide plate 5232 and the detection guide rod 523 play a role in guiding when moving.
The detecting mechanism 52 solves the problem of stable movement of the detecting element 524, and the detecting mechanism 52 has the advantages that the detecting element 524 can stably move along the detecting guide rod 523 by the design of the detecting guide plate 5232 and the detecting guide rod 523, thereby ensuring that the detecting element 524 can accurately detect.
A precision three-way valve airtightness detection method adopts precision three-way valve airtightness detection equipment, and sequentially comprises the following steps:
positioning a jig tool: the three-way valve to be detected is installed on the jig 23, and the three-way valve is pressed in the jig 23 through the pressing mechanism 24. The jig tool 2 is mounted on the jig tool mounting plate 3221, and the jig tool 2 is fixed on the jig tool mounting plate 3221 by the pressing and fixing mechanism 34. The jig tool 2 is moved to the detection position by the moving mechanism 32. The jig tool 2 is positioned by the positioning mechanism 33.
(II) clamping the lower part of the three-way valve: the up-and-down moving cylinder 412 pushes the moving frame 413 to move upward, so that the clamping mechanism 42 is initially in contact with the lower portion of the three-way valve. The fine adjustment cylinder 416 further fine adjusts the position of the clamping mechanism 42 to move the three-way valve into the collet 423. The clamping cylinder 425 pulls the collet 423 downward and the collet 423 clamps the three-way valve through the clamping groove 4222 in the upper portion of the outer housing 4221. The valve switch cylinder 431 pushes the rack 433 to move, the rack 433 is meshed with the gear 434 to enable the gear 434 to rotate, the gear 434 drives the rotating shaft 422 to rotate, and the chuck 423 rotates along with the rotating shaft 422 to close the valve at the lower part of the three-way valve.
(III) detecting airtightness: the detection mechanism 52 detects the airtightness of the clamped three-way valve.
The apparatus presses the three-way valve in the mounting groove 231 of the jig 23 by rotating the first pressing handle 241 to the left and moving the pressing rod 244 to the right by the first pressing handle 241 and the first hinge block 242. The pressing mechanism 24 solves the problem of fixing the three-way valve in the jig 23, and the pressing mechanism 24 has the advantages that the pressing rod 244 is pressed against the three-way valve through the cooperation of the first pressing handle 241 and the first hinging block 242, so that the operation is simple, and the three-way valve is effectively fixed. The slide block 322 moves the fixture mounting plate 3221 to initially align the positioning hole 32211 with the positioning mechanism 33, and the positioning mechanism 33 is pulled to pass through the positioning hole 32211 on the fixture mounting plate 3221 to perform accurate positioning. The jig moving positioning device 3 solves the positioning problem of the jig tool mounting plate 3221, and the jig moving positioning device 3 has the advantages that the jig tool mounting plate 3221 is positioned by the positioning mechanism 33 penetrating through the positioning holes 32211, so that the positioning accuracy is ensured, and the positioning efficiency is improved. The second pressing handle 342 is rotated downward, the pressing plate 344 is rotated rightward through the second hinge block 343, and the pressing head 345 at the lower part of the pressing plate 344 presses and fixes the jig tool 2 on the jig tool mounting plate 3221. The pressing fixing mechanism 34 solves the fixing problem of the jig tool 2, the pressing fixing mechanism 34 has the advantages that the pressing action is realized through the hinging among the second pressing handle 342, the second hinging block 343 and the pressing plate 344, the operation is simple, and meanwhile, the three pressing fixing mechanisms 34 simultaneously press the jig tool mounting plate 3221, so that the pressing reliability is ensured. The up-down moving cylinder 412 pushes the moving frame 413 to ascend, the auxiliary cylinder 415 and the guide block 414 play a role in guiding when ascending, when the lower part of the three-way valve enters the clamping mechanism 42, the moving frame 413 stops moving, and the fine adjusting cylinder 416 moves the clamping mechanism 42 to enable the clamping mechanism 42 to move to a specified position. The up-down moving mechanism 41 solves the problem of up-down movement of the clamping mechanism 42, and the up-down moving mechanism 41 has the advantages that the position of the clamping mechanism 42 is roughly adjusted by the up-down moving cylinder 412, and then the clamping mechanism 42 is finely adjusted by the fine adjusting cylinder 416 so that the clamping mechanism 42 can conveniently clamp the lower part of the three-way valve. The clamping cylinder 425 pulls the rotating shaft 422 downward, so that the clamping head 423 moves downward, and the clamping groove 4222 on the outer shell 4221 tightens the upper part of the clamping head 423 to clamp the three-way valve. The clamping mechanism 42 solves the problem of clamping the three-way valve, and the clamping mechanism 42 has the advantages that the shape of the clamping groove 4222 corresponds to the shape of the upper part of the clamping head 423, and the upper part of the clamping head 423 is tightened by pulling the clamping head 423 downwards, so that the lower part of the three-way valve is clamped. The valve switch cylinder 431 drives the adapter plate 432 to enable the rack 433 to move rightwards, the gear 434 rotates along with the rack 433, and the gear 434 drives the rotating shaft 422 to rotate, so that the chuck 423 rotates to close the valve of the three-way valve. The valve opening and closing mechanism 43 solves the problem of valve closing, the valve opening and closing mechanism 43 has the advantages that the rotating shaft 422 rotates through the meshing of the gear 434 and the rack 433, the effect of valve closing is achieved, the structure is ingenious, and the action is controlled through the valve opening and closing cylinder 431, so that the action reliability is guaranteed. The detection cylinder 521 pushes the guide rod connecting plate 5231, the guide rod connecting plate 5231 drives the detection element 524 thereon to move towards the valve, and the detection guide plate 5232 and the detection guide rod 523 play a role in guiding when moving. The detecting mechanism 52 solves the problem of stable movement of the detecting element 524, and the detecting mechanism 52 has the advantages that the detecting element 524 can stably move along the detecting guide rod 523 by the design of the detecting guide plate 5232 and the detecting guide rod 523, thereby ensuring that the detecting element 524 can accurately detect.
Claims (4)
1. A lower part switch valve device for detecting the air tightness of a precise three-way valve is characterized by comprising an up-down moving mechanism (41), a clamping mechanism (42) and a valve switch mechanism (43); the clamping mechanism (42) is arranged on the up-down moving mechanism (41), and the clamping mechanism (42) is used for clamping the lower part of the valve; the clamping mechanism (42) comprises a mounting box (421), a rotating shaft (422), a clamping head (423), a coupling (424) and a clamping cylinder (425); the mounting box (421) is slidably mounted on the upper part of a moving frame (413) of the up-down moving mechanism (41) through a connecting plate; the rotary shaft (422) is vertically arranged in the installation box (421), an outer shell (4221) is sleeved outside the rotary shaft (422), the outer shell (4221) is conical, and a clamping groove (4222) for the chuck (423) is formed in the upper part of the outer shell (4221); the upper part of the rotating shaft (422) is provided with a clamping head (423) in a sliding way, the clamping head (423) is positioned in the outer shell (4221), and the top shape of the clamping head (423) corresponds to the shape of the clamping groove (4222); the lower part of the rotating shaft (422) is connected with a coupling (424); a clamping cylinder (425) is arranged at the lower part of the coupling (424), the clamping cylinder (425) pulls the rotating shaft (422) downwards to enable the clamping head (423) to move downwards, and the upper part of the clamping head (423) is tightened through a clamping groove (4222) to clamp the three-way valve; the valve opening and closing mechanism (43) is arranged at the upper part of the clamping mechanism (42), and the valve opening and closing mechanism (43) is used for rotating the clamping mechanism (42) to open or close the valve.
2. The lower switching valve device for the airtightness detection of the precision three-way valve according to claim 1, wherein the up-down moving mechanism (41) comprises a fixed frame (411), an up-down moving cylinder (412), a moving frame (413), a guide block (414), an auxiliary cylinder (415), and a fine-tuning cylinder (416); a guide post (4111) is arranged on the fixed frame (411), and an up-and-down moving cylinder (412) is arranged at the lower part of the fixed frame (411); the lower end of the moving frame (413) is connected with an up-down moving cylinder (412); the guide block (414) is arranged at the lower part of the movable frame (413), and two ends of the guide block (414) are sleeved on the guide columns (4111); the auxiliary cylinder (415) is arranged in front of the guide block (414), and the auxiliary cylinder (415) is used for pressing the guide block (414) and the moving frame (413); the fine adjustment cylinder (416) is installed in the middle of the movable frame (413) through a fine adjustment cylinder installation plate (4161), and the output end of the fine adjustment cylinder (416) is connected with the lower portion of the installation box (421).
3. The lower switch valve device for the airtightness test of the precision three-way valve according to claim 1, wherein the valve switching mechanism (43) is installed at an upper portion of the clamping mechanism (42), and the valve switching mechanism (43) is used for rotating the clamping mechanism (42) to open or close the valve; the valve switching mechanism (43) comprises a valve switching cylinder (431), an adapter plate (432), a rack (433) and a gear (434); the valve switch cylinder (431) is transversely arranged on the clamping mechanism (42) through a valve switch cylinder mounting plate (4311); one end of the adapter plate (432) is installed at the output end of the valve switch cylinder (431), the other end of the adapter plate (432) is connected with the left end of the rack (433), the rack (433) is transversely installed inside the installation box (421), guide sleeves (4331) are arranged at two ends of the rack (433), the gear (434) is fixedly installed on the rotating shaft (422), and the gear (434) is meshed with the rack (433).
4. A precision three-way valve airtightness detection device is characterized by comprising a rack (1), a jig tool (2), a jig moving positioning device (3), a lower switch valve device (4) and a detection device (5); the jig tool (2) is arranged on the jig moving and positioning device (3), and the jig tool (2) is provided with a plurality of jig mechanisms (20) for installing the three-way valve; the jig moving and positioning device (3) is arranged on the rack (1), and the jig moving and positioning device (3) is used for moving and positioning the jig tool (2); the detection device (5) is arranged on the upper part of the rack (1) and is connected with the jig tool, and the detection device (5) is used for detecting the air tightness of the valve; the lower switch valve device (4) adopts a precision three-way valve airtightness detection lower switch valve device as claimed in any one of claims 1 to 3.
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| CN201911198815.4A CN110836751B (en) | 2019-11-29 | 2019-11-29 | Lower switch valve device for detecting air tightness of precise three-way valve |
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| CN201911198815.4A CN110836751B (en) | 2019-11-29 | 2019-11-29 | Lower switch valve device for detecting air tightness of precise three-way valve |
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| CN110836751B true CN110836751B (en) | 2021-08-10 |
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