CN105904259B - Fixture and its air pressure time-delay valve - Google Patents
Fixture and its air pressure time-delay valve Download PDFInfo
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- CN105904259B CN105904259B CN201610404356.0A CN201610404356A CN105904259B CN 105904259 B CN105904259 B CN 105904259B CN 201610404356 A CN201610404356 A CN 201610404356A CN 105904259 B CN105904259 B CN 105904259B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/10—Auxiliary devices, e.g. bolsters, extension members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2703/00—Work clamping
- B23Q2703/12—Accessories for attaching
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
- Safety Valves (AREA)
Abstract
The present invention relates to a kind of fixture and its air pressure time-delay valve,Fixture also includes base,First cylinder,Second cylinder,Air inlet pipe and escape pipe,The end set of the piston rod of first cylinder has clamping jaw,Air pressure time-delay valve includes main body adapting pipe,Piston,Vacuum tube,Second spring,Air bleeding valve and end cap,Air inlet is provided with main body adapting pipe,Gas outlet and passage,Gases at high pressure are passed through air inlet pipe,Into the first cylinder and air pressure time-delay valve,Drive piston rod to stretch out and drive jaw action,Clamping jaw pushes down pressing plate,Workpiece is fixed,Into air pressure time-delay valve,Second spring is promoted to make its compression,And air pressure is produced in vacuum tube during promotion,Air pressure promotes exhaust valve motion,Air bleeding valve periphery is sealed by the madial wall of vacuum tube,Gas can only be discharged by passage again by steam vent,Because the diameter of steam vent is less than the diameter of air inlet,Piston is obstructed during being promoted,Start to slow down speed,Reach time-lag action.
Description
Technical field
The present invention relates to Digit Control Machine Tool auxiliary Tools Technology, more particularly to a kind of fixture and its air pressure time-delay valve.
Background technology
Electronic product (such as mobile phone, flat board are processed using Digit Control Machine Tool (CNC, Computer number control)
Computer etc.) shell or center when, it will usually use fixture, it would be desirable to which then the clamping workpiece of processing recycles on fixture
The cutter of Digit Control Machine Tool is processed to workpiece.
Traditional fixture is generally controlled by air pressure valve, but because air pressure valve is excessive, easy no marking air pressure valve, and
If potential safety hazard can not be brought to operation according to specific sequencing.
The content of the invention
Based on this, it is necessary to for above-mentioned technical problem, there is provided it is a kind of effectively avoid operating safety risks fixture and its
Air pressure time-delay valve.
A kind of air pressure time-delay valve, including：
Main body adapting pipe, in hollow form, including first end and the second end, the first end is provided with air inlet and gas outlet,
The gas outlet is located at the side wall of the first end, and the air inlet is located at end face or the side wall of the first end, and described
Two ends are provided with passage, and the gas outlet is between the air inlet and the passage；
Piston, it is contained in the main body adapting pipe；
Vacuum tube, it is contained in the main body adapting pipe, one end of the piston is inserted in the vacuum tube；
Second spring, it is contained in the vacuum tube, one end of the second spring is connected to the piston；
Air bleeding valve, it is contained in the vacuum tube, the other end of the second spring abuts the air bleeding valve, the exhaust
Steam vent is offered on valve, the diameter of the steam vent is less than the diameter of the air inlet, and the steam vent is held with the main body
The passage at the end of adapter second is connected；And
End cap, it is covered on the end at second end.
In one of the embodiments, air inlet duct is offered in the side wall of the air bleeding valve, the steam vent passes through described
Air inlet duct is connected with the passage.
In one of the embodiments, in addition to adjusting part, the adjusting part include regulating valve, buckle and regulation spiral shell
Bar, the air bleeding valve are fixed in the regulating valve by the buckle, are offered in the regulating valve and the air inlet duct phase
The air channel of connection, one end of the adjusting screw rod are connected in the regulating valve through the end cap.
In one of the embodiments, the regulating valve is in hollow form and one end open, its openend along it axially outward
It is prominent formed with fixed column, offer the first neck on the madial wall of the fixed column, the buckle is opened in first card
In groove, between the buckle and the regulating valve, the air channel is opened in the regulating valve and it air bleeding valve
The relative other end in openend.
In one of the embodiments, the end face of the fixed column offers the second neck, one end of the second spring
It is arranged in second neck.
In one of the embodiments, the other end of the regulating valve is projected axially outward formed with limited post, institute along it
State and stopper slot is offered on limited post, one end of the adjusting screw rod is caught in the stopper slot.
In one of the embodiments, in addition to sphere filter, the sphere filter is contained in the main body adapting pipe, and position
In in the side wall for offering passage.
In one of the embodiments, protruded inwardly from the madial wall of the main body adapting pipe formed with limited step, institute
Gas outlet is stated between the limited step and the air inlet, the one end of the vacuum tube inserted with piston with it is described spacing
Step offsets.
In one of the embodiments, the end cap spiral shell is located at the end at second end.
A kind of fixture, including：
Base, including bottom plate, location-plate and pressing plate, the location-plate are used to place workpiece, and the location-plate is arranged at institute
State between bottom plate and the pressing plate；
First cylinder, the end set of its piston rod have a clamping jaw, first cylinder be used to driving the jaw action with
Pressure is applied to the pressing plate；
Second cylinder, for driving the bottom plate to be moved along the direction close to the location-plate；
Air inlet pipe, escape pipe and the air pressure time-delay valve as described in any of the above one, the air inlet of the air pressure time-delay valve
It is in parallel with the air inlet of first cylinder and be connected with the air inlet pipe, the gas outlet of the air pressure time-delay valve with it is described
Second cylinder air inlet series connection, the gas outlet of first cylinder it is in parallel with the gas outlet of second cylinder and with it is described
Escape pipe is connected.
Above-mentioned fixture and its air pressure time-delay valve at least has advantages below：
During work, gases at high pressure are passed through air inlet pipe, and then enter the air inlet of the air inlet and air pressure time-delay valve of the first cylinder
Mouthful, gases at high pressure drive piston rod to stretch out and then drive jaw action after entering the first cylinder, and clamping jaw pushes down pressing plate, workpiece is consolidated
It is scheduled between pressing plate and location-plate, while gases at high pressure enter air pressure time-delay valve, driving piston is to the side for continuing to stretch into vacuum tube
To motion, the movement progress second spring of piston makes its compression, and produces air pressure, air pressure in vacuum tube during promotion
Exhaust valve motion is promoted, now air bleeding valve periphery is sealed by the madial wall of vacuum tube, and gas can only be by steam vent again by logical
Stomata is discharged, and because the diameter of steam vent is less than the diameter of air inlet, piston is obstructed during being promoted, starts to slow down speed
Degree, reaches time-lag action, and when piston is pushed over gas outlet, gases at high pressure are discharged to up to the second cylinder from gas outlet, so that the
Two cylinders driving bottom plate moves upwards, is controlled only with an air pressure time-delay valve, avoids air pressure valve excessive, and the air pressure is delayed
Valve is in strict accordance with first driving the first cylinder to be pressed downward, then the mode for driving the second cylinder to push up upwards, effectively avoids potential safety hazard.
Brief description of the drawings
Fig. 1 is the structural representation of the fixture in an embodiment；
Fig. 2 is the decomposing schematic representation of fixture shown in Fig. 1；
Fig. 3 is the decomposing schematic representation at another visual angle of fixture shown in Fig. 1；
Fig. 4 is the partial schematic diagram of fixture shown in Fig. 2；
Fig. 5 is another partial schematic diagram of fixture shown in Fig. 2；
Fig. 6 is the structural representation of detent mechanism in Fig. 2；
Fig. 7 is another partial schematic diagram of fixture shown in Fig. 2；
Fig. 8 is the another partial schematic diagram of fixture shown in Fig. 2；
Fig. 9 is the structural representation of air pressure time-delay valve in Fig. 1；
Figure 10 is the decomposing schematic representation of air pressure time-delay valve shown in Fig. 9；
Figure 11 is the partial schematic diagram in Fig. 9；
Figure 12 is the decomposing schematic representation at another visual angle shown in Figure 11；
Figure 13 is the structural representation at another visual angle of air pressure time-delay valve shown in Fig. 9；
Figure 14 is the sectional view of the line A-A along Figure 13；
Figure 15 is the sectional view of the line B-B along Figure 13；
Figure 16 is the decomposing schematic representation of the air pressure testing agency in an embodiment.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, below in conjunction with the accompanying drawings to the present invention
Embodiment be described in detail.Many details are elaborated in the following description in order to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case of running counter to intension of the present invention, therefore the present invention is not limited to the specific embodiments disclosed below.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
For illustrative purposes only, it is unique embodiment to be not offered as " right side " and similar statement.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Each technical characteristic of embodiment described above can be carried out arbitrarily
Combination, to make description succinct, it is not all possible to each technical characteristic in above-described embodiment combination be all described, so
And as long as contradiction is not present in the combination of these technical characteristics, all it is considered to be the scope of this specification record.
Fig. 1 to Fig. 3 is referred to, is the fixture 10 in an embodiment.The fixture 10 is mainly used in intelligent numerical control machine tool
On, for fixing workpiece 20, such as phone housing, center etc., to be processed further to workpiece 20.Specific to this implementation
In mode, fixture 10 includes base 100, detent mechanism 200, the first cylinder 300, the second cylinder 400, air inlet pipe 500, escape pipe
600th, air pressure time-delay valve 700 and air pressure testing agency 800.
Also referring to Fig. 4, base 100 includes bottom plate 110, location-plate 120 and pressing plate 130, and location-plate includes locating surface
121, locating surface 121 is used to place workpiece 20, and location-plate 120 is arranged between bottom plate 110 and pressing plate 130.Workpiece 20 is positioned over
When on fixture 10, workpiece 20 is located between the locating surface 121 and pressing plate 130 of location-plate 120.The opposite sides face of pressing plate 130 is set
Handle 131 is equipped with, pressing plate 130 can be placed in by the top of workpiece 20 by handle 131, improve the convenience of pressing plate 130.
Locating rod 140 is provided between bottom plate 110 and pressing plate 130, and the first perforate 132, bottom plate are offered on pressing plate 130
The second perforate 111 is offered on 110, the both ends of locating rod 140 are embedded in the first perforate 132 and in the second perforate 111 respectively,
To improve the positional accuracy between pressing plate 130 and bottom plate 110.
Also referring to Fig. 5 and Fig. 6, detent mechanism 200 is positioned at location-plate 120 for auxiliary work-piece 20.Localization machine
Structure 200 includes locating bodies 210, the first spring 220, the first locating dowel 230 and the second locating dowel 240, locating bodies 210 and is embedded
In on the location-plate 120 of fixture 10.For example, locating bodies 210 can be in substantially rectangular shape, wherein two adjacent sides are provided with
Unfilled corner is to form error-proof structure.By opening up blind slot 122 on location-plate 120, detent mechanism 200 is placed in blind slot 122, with
Locating bodies 210 are made to be embedded at the structure of fixture 10.
Locating slot 211 is offered on locating bodies 210, the first locating dowel 230 is contained in locating slot 211.First spring
220 are sheathed in the first locating dowel 230, and one end of the second locating dowel 240 offers accepting groove 241, and the second locating dowel 240 opens up
The one end for having accepting groove 241 is stretched into locating slot 211, and the other end of the second locating dowel 240 stretches out in locating bodies 210, and
The diameter of the other end of two locating dowels 240 is gradually reduced along the direction away from the first locating dowel 230.The size edge of locating slot 211
It is gradually reduced close to the direction of top surface, the diameter that the second locating dowel 240 stretches into one end of locating bodies 210 is more than locating slot 211
Close to the diameter of top surface, prevent the second locating dowel 240 from departing from out of locating slot 211.
Therefore, when workpiece 20 is placed on location-plate 120, the second positioning is arranged in by the positioning hole 21 on workpiece 20
The other end of post 240, positioned with auxiliary work-piece 20.And the diameter edge remote first of the other end due to the second locating dowel 240
The direction of locating dowel 230 is gradually reduced, therefore can adapt to various different size of positioning holes 21, to improve detent mechanism 200
Suitability, improve the matching degree of detent mechanism 200 and positioning hole 21, improve positioning precision.
Rounding 242 is set between the side and end face of the other end of second locating dowel 240, therefore can effectively prevent work
The positioning hole 21 of part 20 is arranged in scratch workpiece 20 when in the second locating dowel 240.The end face of the other end of second locating dowel 240 to
Outer protrusion now can set a groove formed with salient point 243 in the bottom of the positioning hole 21 on workpiece 20, with the phase of boss 243
Coordinate.
Specific in present embodiment, when the height of the first locating dowel 230 is less than the first spring 220 in the raw
Highly, now the bottom of accepting groove 241 with the first spring 220 in the raw when one end offset, the bottom of accepting groove 241
There is spacing between the first locating dowel 230.When workpiece 20 is arranged in the second locating dowel 240, the positioning hole 21 of workpiece 20
The outer peripheral edge of side wall and the second locating dowel 240 offset.When pressing plate 130 applies pressure to workpiece 20, workpiece 20 is fixed to second
Position post 240 presses, and then oppresses the first spring 220, compresses the first spring 220, and then reduces workpiece 20 and location-plate
The distance between 120 locating surface 121.When the first spring 220 compresses to a certain extent, the bottom of accepting groove 241 is fixed with first
When position post 230 is inconsistent, the first spring 220 can not be compressed again.
Certainly, in other embodiments, the height of the first locating dowel 230 can also be made to be more than at the first spring 220
Height when nature, now, the second locating dowel 240 offers the end of accepting groove 241 and the first spring 220 is in certainly
One end during right state offsets, and has spacing between the bottom of accepting groove 241 and the first locating dowel 230.
Specific in present embodiment, locating slot 211 forms through hole, positioning through the bottom surface of locating bodies 210 and top surface
The bottom surface of body 210 is additionally provided with baffle plate 250, and baffle plate 250 is covered on through hole, the first spring 220 and the first locating dowel 230
One end offsets with baffle plate 250.
The first screwed hole is offered on baffle plate 250, the first locating dowel 230 offers second with one end that baffle plate 250 offsets
Screwed hole, it is arranged in successively in the first screwed hole and in the second screwed hole by the first threaded fastener 260, by the first locating dowel
230 are fixed on baffle plate 250.The 3rd screwed hole is further opened with baffle plate 250, the 4th screwed hole is offered on locating bodies 210,
It is arranged in successively in the 3rd screwed hole and the 4th screwed hole by the second threaded fastener 270, baffle plate 250 is more securely solid
Due to the bottom of locating bodies 210.
The installation method of detent mechanism 200 is as follows in present embodiment：It is fixed that first the second locating dowel 240 is stretched out by through hole
First spring 220 and the first locating dowel 230, are then assembled in locating bodies 210 by the top surface of position body 210, finally will gear
Plate 250 is covered on through hole, is advantageous to improve the convenience that detent mechanism 200 assembles.
Fixture 10 also includes installing plate 900, is fixed on by installing plate 900 on intelligent numerical control machine tool, and the first cylinder 300 is pacified
Loaded on installing plate 900.Also referring to Fig. 7, the end set of the piston rod 310 of the first cylinder 300 has a clamping jaw 320, and first
Cylinder 300 is used to drive clamping jaw 320 to move to apply pressure to pressing plate 130.
Specific in present embodiment, clamping jaw 320 is rotatablely arranged at the end of piston rod 310.For example, clamping jaw 320
One end be arranged at by first rotating shaft 330 on piston rod 310, locating piece 340 is provided with the first cylinder 300, clamping jaw 320
Middle part is rotatablely arranged on locating piece 340 by connecting rod 350, and the other end of clamping jaw 320 is free end.Piston rod 310 is stretched
When going out, one end of driving clamping jaw 320 rotates, and then rotates the free end of clamping jaw 320, is pressed on pressing plate 130.Certainly, at it
In its embodiment, directly clamping jaw can also be driven to be moved along a straight line about 320 by the flexible of piston rod 310, push down pressing plate
130。
The quantity of first cylinder 300 is multiple, and multiple first cylinders 300 are uniformly distributed in around location-plate 120, multiple
The air inlet of first cylinder 300 is parallel with one another and is connected with air inlet pipe 500, and the gases at high pressure that air inlet pipe 500 is passed through can be with
The first cylinder 300 is directly entered by the air inlet of the first cylinder 300, the first cylinder 300 drives clamping jaw to apply pressing plate 130 and pressed
Power.The gas outlet of multiple first cylinders 300 is parallel with one another and is connected with escape pipe 600.For example, the number of the first cylinder 300
Measure as six, three the first cylinders 300 are arranged at the side of location-plate 120, and the first cylinder of the other three 300 is located at location-plate
120 opposite side.
Also referring to Fig. 8, the second cylinder 400 is used to drive bottom plate 110 to move along the direction close to location-plate 120.Tool
Body, the quantity of the second cylinder 400 is two, and the second cylinder 400 is fixed on peace by supporting plate 410 and cylinder mounting plate 420
In loading board 900, cylinder mounting plate 420 is arranged in supporting plate 410, and supporting plate 410 is arranged on installing plate 900.Second cylinder
400 piston rod and bottom plate 110 are inconsistent, and bottom plate 110 can be driven to be moved along the direction close to location-plate 120.
The air inlet of each second cylinder 400 is parallel with one another, and the gas outlet of each second cylinder 400 is parallel with one another.And the
Two cylinders 400 are connected by an air pressure time-delay valve with air inlet pipe 500 and escape pipe 600.
Also referring to Fig. 9 to 15, air pressure time-delay valve 700 includes main body adapting pipe 710, piston 720, vacuum tube 730, the
Two springs 740, air bleeding valve 750, adjusting part 760, sphere filter 770 and end cap 780.Main body adapting pipe 710 is in hollow form, including
The end 712 of first end 711 and second, first end 711 are provided with air inlet 710a and gas outlet 710b.Be provided with air inlet 710a into
Gas joint 713, such as inlet suction port 713 can be threadedly at air inlet 710a.It is provided with out at the 710b of gas outlet
Gas joint 714, such as air outlet adapter 714 can be threadedly at the 710b of gas outlet.
Gas outlet 710b is located at the side wall of first end 710, and air inlet 710a is located at end face or the side wall of first end 711,
The side wall at the second end 712 is provided with passage 710c, and gas outlet 710b is between air inlet 710a and passage 710c.Example
Such as, specific in present embodiment, air inlet 710a is located at the end face of first end.The air inlet 710a of air pressure time-delay valve 700 with
The air inlet of first cylinder 300 is in parallel, and is connected with air inlet pipe 500.The gas outlet 710b of air pressure time-delay valve 700 and second
The air inlet series connection of cylinder 400, the escape pipe 600 of the first cylinder 300 are in parallel with the gas outlet of the second cylinder 400 and and outlet
Pipe 600 is connected.
Piston 720 is contained in main body adapting pipe 710.For example, it is also possible in piston 720 and main body adapting pipe 710
Sealing ring is set between side wall, to increase the sealing between piston 720 and main body adapting pipe 710.It is living during positioned at original state
Fill in the gas outlet 710b of 720 blanket gas pressure time-delay valve 700.
Vacuum tube 730 is contained in main body adapting pipe 710.One end of piston 720 is inserted in vacuum tube 730, works as high pressure
Gas from air inlet 710a enter main body adapting pipe 710 in when, driving piston 720 along insertion vacuum tube 730 in direction move.
On the madial wall of main body adapting pipe 710 protrude inwardly from formed with limited step 715, gas outlet 710b be located at limited step 715 and
Between air inlet 710a, one end inserted with piston 720 offsets with limited step 715 in vacuum tube 730, therefore vacuum tube 730
Moved without normal direction close to the direction of air inlet.One end that piston 720 stretches into vacuum tube 730 can offset with limited step 715, prevent
Only piston 720 departs from from main body adapting pipe 710.
Second spring 740 is contained in vacuum tube 730, and one end of second spring 740 is connected on piston 720.Air bleeding valve
750 are contained in vacuum tube 730, and the other end of second spring 740 is connected on air bleeding valve 750.The row of offering on air bleeding valve 750
Stomata 751, the diameter of steam vent 751 are less than air inlet 710a diameter.For example, steam vent 751 can be that diameter is less thin
Hole.Air inlet duct 752 is offered in the side wall of air bleeding valve 750, air inlet duct 752 is connected with steam vent 751.
Adjusting part 760 includes regulating valve 761, buckle 762 and adjusting screw rod 763.Air bleeding valve 750 is solid by buckle 762
Due in regulating valve 761, offering the air channel 7611 that is connected with air inlet duct 752 in regulating valve 761, adjusting screw rod 763
One end is connected in regulating valve 761 through end cap 780.
Specifically, regulating valve 761 is in hollow form and one end open, and openend is projected axially outward formed with fixation along it
Post 7612, the first neck 7613 is offered on the madial wall of fixed column 7612, buckle 762 is opened in the first neck 7613, row
Air valve 750 is located at buckle 762 between regulating valve 761, and air channel 7611 is opened in relative with its openend in regulating valve 761
The other end.The end face of fixed column 7612 offers the second neck 7614, and one end of second spring 740 is arranged in the second neck 7614
It is interior.
The other end of regulating valve 761 projects axially outward to form limited post 7615 along it, is opened up on limited post 7615 limited
Position groove 7616, one end of adjusting screw rod 763 is caught in stopper slot 7616.For example, the periphery in limited post 7615 opens up stopper slot
7616, one end of adjusting screw rod 763 sets chuck, is caught in by chuck 7616 in stopper slot, adjusting screw rod 763 is arranged on
One end of regulating valve 761.Adjusting screw rod 763 is the gas outlet 710b to air pressure time-delay valve 700 for the rear end of regulating piston 720
Distance, the length of the distance determines the length of regulation delay.
Sphere filter 770 is contained in outside main body adapting pipe 710, and positioned at the side-wall outer side for offering passage 710c, filtering
Circle 770 mainly plays a role in filtering, and prevents extraneous dust from entering in main body adapting pipe 710, avoids it from entering vacuum tube 730
It is interior.End cap 780 is covered on the end at the second end 712.For example, end cap 780 can be located at the end at the second end 712 with spiral shell.
During work, gases at high pressure are passed through air inlet pipe 500, and then enter the air inlet and air pressure time-delay valve of the first cylinder 300
700 air inlet 710a, gases at high pressure drive its piston rod to stretch out and then drive clamping jaw 320 to rotate after entering the first cylinder 300,
Clamping jaw 320 pushes down pressing plate 130, and workpiece 20 is fixed between pressing plate 130 and location-plate 120, while gases at high pressure enter air pressure
Time-delay valve 700, driving piston 720 move to the direction for continuing to stretch into vacuum tube 730, the movement progress second spring of piston 720
740 make its compression, and produce air pressure in vacuum tube 730 during promotion, and air pressure promotes air bleeding valve 750 to move, now
The periphery of air bleeding valve 750 by vacuum tube 730 madial wall seal, gas can only by steam vent 751 and then by air inlet duct 752 again
Discharged by passage 710c, because the diameter of steam vent 751 is less than air inlet 710a diameter, piston 720 is being promoted
During be obstructed, start to slow down speed, reach time-lag action, when piston 720 is pushed over gas outlet 710b, gases at high pressure are from going out
Gas port 710b is discharged to up to the second cylinder 400, so as to which the second cylinder 400 driving location-plate 120 moves upwards, only with a gas
Pressure time-delay valve 700 control, avoid air pressure valve excessive, and the air pressure time-delay valve 700 in strict accordance with first drive the first cylinder 300 to
Push, then the mode for driving the second cylinder 400 to push up upwards, effectively avoid potential safety hazard.
When disconnecting gases at high pressure, second spring 740 promotes piston 720 to make to produce negative pressure in vacuum tube 730, at this moment drives
Air admits air into by sphere filter 770, the passage 710c of main body adapting pipe 710, the air channel 7611 of regulating valve 761
Into vacuum tube 730, piston 720 resets.
Also referring to Figure 16, air pressure testing agency 800 be used for by detect air pressure with detect workpiece 20 whether clamping
In place and whether the locating surface 121 of location-plate 120 cleans.The positioning stomata through locating surface 121 is offered on location-plate 120
123.Air pressure testing agency 800 includes pressure solenoid valve 810, three-way pipe 820, sealing ring 830 and air pressure regulator 840.
Three-way pipe 820 includes the first opening, the second opening and the 3rd opening being interconnected.Pressure solenoid valve 810 and
One opening in communication, the second opening are connected with the air inlet pipe 500 of fixture 10, and the 3rd opening is connected with positioning stomata 123.It is close
Seal 830 is arranged at positioning stomata 123, and positioned at the locating surface 121 of location-plate 120.Gas enters threeway through the 3rd opening
Acted on after pipe 820 on positioning stomata 123, the pressure solenoid valve 810 of the first opening connection is used to detect the gas in three-way pipe 820
Press to determine whether clamping in place.
Air pressure regulator 840 is arranged between the second opening and the air inlet pipe 500 of fixture 10, and connects the second opening and folder
The air inlet pipe 500 of tool 10.Air pressure regulator 840 is primarily to ensure the stability of air pressure testing agency.Air pressure testing agency
800 also include warning mechanism, and warning mechanism electrically connects with pressure solenoid valve 810, when pressure solenoid valve 810 detects that air pressure diminishes
When, warning mechanism sends alarm.
After workpiece 20 is placed in locating surface 121 of location-plate 120, the gases at high pressure of air inlet pipe 500 pass through the second opening, the
Three openings are passed into positioning stomata 123, if the clamping of workpiece 20 is in place and the locating surface 121 of location-plate 120 cleans, workpiece 20
Surface and the sealing property of sealing ring 830 it is preferable, now position stomata 123 will not gas leakage, pressure solenoid valve 810 detects pre-
Determine atmospheric pressure value, intelligent numerical control machine tool normally starts；If location-plate 120 is without the locating surface for clipping to position and/or location-plate 120
121 is unclean, then the gas leakage of positioning stomata 123 on location-plate 120, the atmospheric pressure value that pressure solenoid valve 810 detects can diminish, this
When intelligent numerical control machine tool can not start.Due in present embodiment, only setting an air pressure time-delay valve 700, therefore air pressure detection machine
As long as structure 800 is also correspondingly arranged one and whole fixture 10 can be detected.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that come for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (9)
- A kind of 1. air pressure time-delay valve, it is characterised in that including：Main body adapting pipe, in hollow form, including first end and the second end, the first end is provided with air inlet and gas outlet, described Gas outlet is located at the side wall of the first end, and the air inlet is located at end face or the side wall of the first end, second end Provided with passage, the gas outlet is between the air inlet and the passage；Piston, it is contained in the main body adapting pipe；Vacuum tube, it is contained in the main body adapting pipe, one end of the piston is inserted in the vacuum tube；Second spring, it is contained in the vacuum tube, one end of the second spring is connected to the piston；Air bleeding valve, it is contained in the vacuum tube, the other end abutting air bleeding valve of the second spring, on the air bleeding valve Steam vent is offered, the diameter of the steam vent is less than the diameter of the air inlet, the steam vent and the main body adapting pipe The passage at the second end is connected；End cap, it is covered on the end at second end；AndAdjusting part, including regulating valve, buckle and adjusting screw rod, the air bleeding valve are fixed on the regulating valve by the buckle On, the air channel being connected with the air inlet duct is offered in the regulating valve, the end is run through in one end of the adjusting screw rod Lid is connected in the regulating valve.
- 2. air pressure time-delay valve according to claim 1, it is characterised in that offer air inlet in the side wall of the air bleeding valve Groove, the steam vent are connected by the air inlet duct with the passage.
- 3. air pressure time-delay valve according to claim 1, it is characterised in that the regulating valve is in hollow form and one end open, Its openend is projected axially outward formed with fixed column along it, and the first neck is offered on the madial wall of the fixed column, described Buckle is opened in first neck, and the air bleeding valve between the buckle and the regulating valve, open by the air channel The other end relative with its openend in the regulating valve.
- 4. air pressure time-delay valve according to claim 3, it is characterised in that the end face of the fixed column offers the second card Groove, one end of the second spring are arranged in second neck.
- 5. air pressure time-delay valve according to claim 3, it is characterised in that the other end of the regulating valve along it axially outward It is prominent formed with limited post, offer stopper slot on the limited post, one end of the adjusting screw rod is caught in the stopper slot.
- 6. air pressure time-delay valve according to claim 1, it is characterised in that be also contained in including sphere filter, the sphere filter In the main body adapting pipe, and it is located at and offers in the side wall of passage.
- 7. air pressure time-delay valve according to claim 1, it is characterised in that inwardly dashed forward on the madial wall of the main body adapting pipe Go out formed with limited step, the gas outlet between the limited step and the air inlet, the vacuum tube inserted with One end of piston offsets with the limited step.
- 8. air pressure time-delay valve according to claim 1, it is characterised in that the end cap spiral shell is located at the end at second end Portion.
- A kind of 9. fixture, it is characterised in that including：Base, including bottom plate, location-plate and pressing plate, the location-plate are used to place workpiece, and the location-plate is arranged at the bottom Between plate and the pressing plate；First cylinder, the end set of its piston rod have clamping jaw, and first cylinder is used to drive the jaw action with to institute State pressing plate and apply pressure；Second cylinder, for driving the bottom plate to be moved along the direction close to the location-plate；Air inlet pipe, escape pipe and air pressure time-delay valve as claimed in any of claims 1 to 8 in one of claims, the air pressure time-delay valve Air inlet is in parallel with the air inlet of first cylinder and is connected with the air inlet pipe, the gas outlet of the air pressure time-delay valve Connected with the air inlet of second cylinder, the gas outlet of first cylinder is in parallel with the gas outlet of second cylinder and equal It is connected with the escape pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610404356.0A CN105904259B (en) | 2016-06-08 | 2016-06-08 | Fixture and its air pressure time-delay valve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610404356.0A CN105904259B (en) | 2016-06-08 | 2016-06-08 | Fixture and its air pressure time-delay valve |
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| CN105904259A CN105904259A (en) | 2016-08-31 |
| CN105904259B true CN105904259B (en) | 2017-11-21 |
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| CN201610404356.0A Active CN105904259B (en) | 2016-06-08 | 2016-06-08 | Fixture and its air pressure time-delay valve |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107116385B (en) * | 2017-06-19 | 2023-08-08 | 苏州赛腾精密电子股份有限公司 | Public mould tool of cell-phone shell |
| CN109483293B (en) * | 2018-11-30 | 2023-08-22 | 东莞市发斯特精密五金有限公司 | Multi-working-position pneumatic combined valve control device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2176808Y (en) * | 1993-07-27 | 1994-09-14 | 江西船用阀门厂 | Gas capacitance resistance pneumatic delay device |
| CN201621132U (en) * | 2010-03-24 | 2010-11-03 | 深圳市三森科技有限公司 | Pneumatic buffer delayer |
| US20130081725A1 (en) * | 2010-06-15 | 2013-04-04 | Akira Arisato | Time delay valve |
| CN102489618A (en) * | 2011-11-30 | 2012-06-13 | 重庆长安汽车股份有限公司 | Automatic clamping device of drawing mold for sheet metal |
| CN202402762U (en) * | 2011-12-22 | 2012-08-29 | 天广消防股份有限公司 | Novel gas delay device |
| CN103836244B (en) * | 2014-03-05 | 2016-11-23 | 福建天广消防有限公司 | A kind of mechanical delay device using gas exterior to control |
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