CN201220349Y - Pneumatic pressure-retaining valve apparatus - Google Patents
Pneumatic pressure-retaining valve apparatus Download PDFInfo
- Publication number
- CN201220349Y CN201220349Y CNU2008201217006U CN200820121700U CN201220349Y CN 201220349 Y CN201220349 Y CN 201220349Y CN U2008201217006 U CNU2008201217006 U CN U2008201217006U CN 200820121700 U CN200820121700 U CN 200820121700U CN 201220349 Y CN201220349 Y CN 201220349Y
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- CN
- China
- Prior art keywords
- valve
- pressure retaining
- spool
- push rod
- cavities
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Jigs For Machine Tools (AREA)
Abstract
The utility model discloses a pneumatic pressure retaining valve device, which belongs to machine tool jig part devices. The air pressure in the cavities on two sides of the of a clamp cylinder piston providing clamping forces remains unchanged according to the requirement when the clamp of a machine tool commutable clamp is exchanged. In order to meet the requirement, two valve body mounting cavities are formed on a clamp body; and pressure retaining valves are mounted in both the valve body mounting cavities, wherein the pressure retaining valves comprise valve bodies, valve cores and mandrils; valve core cavities and mandril cavities are formed in the valve bodies; the valve ports are the axial through holes which penetrate the mandril cavities and the valve core cavities; the valve core cavities are communicated with air inlet circuits through the axial through holes and the radial holes communicated with the axial through holes; the valve cores are arranged in the valve core cavities and block the valve ports up; the mandrils are mounted in the mandril cavities and stick into the axial through holes; the mandril mounting cavities are communicated with the air inlet circuits of the other pressure retaining valve; and the valve core cavities of the two pressure retaining valves are communicated with the cavities on the two sides of the clamp cylinder piston. The pressure retaining valve device enables the air pressure in the cavities on the two sides of the clamp cylinder piston to remain unchanged when the clamp of the machine tool commutable clamp is exchanged, and always keeps a workpiece in a clamped state.
Description
Technical field
The utility model belongs to the jig part apparatus, and is especially relevant with a kind of pneumatic pressure retaining valve device.
Background technology
Be used for the parts of clamping work pieces when jig is machine tooling, provide clamping force by cylinder during clamping work pieces, promptly anchor clamps are realized the clamping of workpiece and the motion of loosening by the control cylinder piston.For improving machine tooling efficient, can on a machine tool, use two or more aforesaid anchor clamps to exchange use, anchor clamps are clamping workpiece and are being in the processing district and carry out workpiece and add man-hour, and another anchor clamps can carry out the loading and unloading of workpiece simultaneously.When anchor clamps exchange, anchor clamps are clamping workpiece and are moving together, then require to be in all the time clamped condition in the anchor clamps exchange process, requirement just provides the piston of the cylinder of clamping force not move, and the air pressure in the cavity of piston both sides can not change so.
The utility model content
The utility model purpose is exactly to provide a kind of pneumatic pressure retaining valve device to remain unchanged with the air pressure in the cavity of realizing the above-mentioned clamping piston of maintenance both sides.For this reason, the utility model is by the following technical solutions:
A kind of pneumatic pressure retaining valve device comprises clamp body, it is characterized in that: described clamp body is provided with two valve body installation cavitys, in each valve body installation cavity identical pressure retaining valve is installed; Pressure retaining valve comprises valve body, is provided with push rod chamber and spool chamber in the valve body, is provided with between push rod chamber and the spool chamber to connect these two chambeies and as the axially extending bore of valve port, valve body is provided with the radial hole that communicates with this axially extending bore; Be provided with spool in the spool chamber, the spool chamber top is sealed with plug, plug is provided with spool is moved pilot hole that play the guiding role and the air hole that is used to ventilate, spool is installed in the pilot hole, valve core outer surface is set with spring, spring one end is resisted against plug, the other end and spool relative fixed, and spool is resisted against described axially extending bore and is used to seal valve port under the spring force effect; Push rod is provided with push rod in the chamber, and bottom, push rod chamber is provided with through hole with plug sealing, bottom, push rod chamber sidewall, and push rod cooperates the formation cylinder as piston with the push rod cavity wall, and the push rod front end stretches into described axially extending bore as valve port; Described clamp body is provided with the air pipe line that is communicated with spool chamber and the air pipe line that clamps the cylinder cavity, is communicated with air inlet and described radial hole, also is provided with air pipe line on the clamp body and intersects the through hole on the sidewall bottom the radial hole of two pressure retaining valves of correspondence connection and the push rod chamber respectively.
During the utility model work, pressure retaining valve one is connected with clamping cylinder rear chamber, pressure retaining valve two is connected with cavity before the clamping cylinder, its course of work is: when pressure retaining valve one air inlet, then pressure air is input to the push rod chamber of the radial hole and the pressure retaining valve two of pressure retaining valve one, the push rod that promotes pressure retaining valve two is opened pressure retaining valve two with the spool top from valve port, the interior pressure air of cavity is exported from gas circuit before clamping cylinder, the reach of clamping cylinder piston, make and clamp the reduction of cylinder rear chamber internal gas pressure, the spool of pressure retaining valve one is thrown off valve port and is opened pressure retaining valve one under the pressure air effect, pressure air is input to from gas circuit by pressure retaining valve one and clamps the cylinder rear chamber, promotes the piston reach again; When pressure retaining valve two air inlets, then pressure air is input to the push rod chamber of the radial hole and the pressure retaining valve one of pressure retaining valve two, the push rod that promotes pressure retaining valve one is opened pressure retaining valve one with the spool top from valve port, the pressure air that clamps in the cylinder rear chamber is exported from gas circuit, move after clamping cylinder piston, make and clamp the preceding cavity internal gas pressure reduction of cylinder, the spool of pressure retaining valve two is thrown off valve port and is opened pressure retaining valve two under the pressure air effect, pressure air is input to from gas circuit by pressure retaining valve two and clamps cavity before the cylinder, promotes again to move behind the piston; When to two pressure retaining valves not during the input pressure air, the push rod of two pressure retaining valves is all inoperative, the pressure air effect of spool in clamping the cylinder cavity all is resisted against the axially extending bore on the valve body, promptly all valve port is sealed, the cavity internal pressure air of the piston both sides of clamping cylinder is constant, and the piston that then clamps cylinder does not also move.When jig exchanged, jig was in separating pressure air input gas circuit state, and to two pressure retaining valves input pressure air not, the piston that then clamps cylinder does not move, and can not change workpiece is in clamped condition.
As the further of technique scheme improved and replenish, the utility model also comprises following additional technical feature:
3 described radial holes are set on described each valve body, and these 3 radial hole center lines are positioned at same plane.
Described valve outer surface is provided with the annular groove that all is communicated with 3 described radial holes.
On described each bottom, valve body push rod chamber sidewall 3 described through holes are set, these 3 through hole center lines are positioned at same plane.
Described valve outer surface is provided with the annular groove that the through hole on the sidewall all is communicated with bottom 3 described push rod chambeies.
Described valve outer surface is provided with seal groove, is set with sealing ring in the seal groove, and the air-tightness of valve outer surface and valve body installation cavity inwall is played the enhancing sealing function.
The end that described spool is resisted against axially extending bore one end is the semicircle sphere, and the semi-round ball surface is provided with seal groove, is set with sealing ring in the seal groove, and the air-tightness of spool and valve port is played the enhancing sealing function.
Described push rod outer surface is provided with seal groove, is set with sealing ring in the seal groove, and the air-tightness of push rod and push rod cavity wall is played the enhancing sealing function.
Use the utility model can reach following beneficial effect: the interior air pressure of cavity that can effectively keep clamping the piston both sides remains unchanged, and realizes just keeping the clamped condition to workpiece without the input pressure air.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the profile of the utility model pressure retaining valve front view.
Fig. 3 is the vertical view of the utility model pressure retaining valve.
Fig. 4 is the A-A cutaway view of the utility model pressure retaining valve.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in detail.
As Fig. 1, Fig. 2, shown in Figure 3, the utility model comprises the valve body installation cavity 3 and 9 that is arranged on the clamp body 2, and identical pressure retaining valve is installed in the valve body installation cavity 3 and 9; Pressure retaining valve comprises valve body 14, be provided with push rod chamber 16 and spool chamber 13 in the valve body 14, be provided with between push rod chamber 16 and the spool chamber 13 and connect these two chambeies and as the axially extending bore 15 of valve port, valve body 14 is provided with 3 radial holes 20 that communicate with this axially extending bore 15, the center line of 3 radial holes 20 is positioned at same plane, and the outer surface of valve body 14 is provided with the annular groove that all is communicated with 3 radial holes 20; Be provided with spool 11 in the spool chamber 13, spool chamber 13 tops are sealed with plug 12, plug 12 is provided with spool 11 is moved pilot hole that play the guiding role and the air hole that is used to ventilate 22, spool 11 1 ends are installed in the pilot hole, spool 11 other ends are provided with step by shoulder, spool 11 outer surfaces are set with spring 21, spring 21 1 ends are resisted against plug 12, the other end is resisted against described step by shoulder and spool 11 relative fixed, spool 11 is resisted against axially extending bore 15 sealing valve ports under the spring force effect, spool 11 is provided with step and is the semicircle sphere by the end of takeing on an end, the semi-round ball surface is provided with seal groove, be set with sealing ring in the seal groove, the air-tightness of spool and valve port is played the enhancing sealing function; Be provided with push rod 19 in the push rod chamber 16,16 bottoms, push rod chamber are sealed with plug 17, and the center line that push rod chamber 16 bottom sidewalls are provided with 18,3 through holes 18 of 3 through holes is positioned at same plane, and valve body 14 outer surfaces are provided with the annular groove that all is communicated with 3 through holes 18; Push rod 19 cooperates the formation cylinder as piston with push rod chamber 16 inwalls, push rod 19 front ends stretch into axially extending bore 15; Valve body 14 outer surfaces are provided with seal groove, are set with sealing ring in the seal groove, and the air-tightness of valve outer surface and valve body installation cavity inwall is played the enhancing sealing function; Clamp body 2 is provided with the air pipe line 8 that is communicated with one of them pressure retaining valve spool chamber 13 and the air pipe line 4 that clamps cylinder cavity 6, is communicated with another pressure retaining valve spool chamber 13 and clamping cylinder cavity 7, clamp body 2 is provided with the air pipe line 1 and 10 of the radial hole 20 that is communicated with two pressure retaining valves respectively and its air inlet separately, also is provided with air pipe line A and B on the clamp body 2 and intersects corresponding radial hole 20 and the through hole 18 that is communicated with two pressure retaining valves respectively.
During the utility model work, pressure retaining valve one is connected with clamping cylinder cavity 6, pressure retaining valve two is connected with clamping cylinder cavity 7, its course of work is: when pressure retaining valve one air inlet, then pressure air is input to the radial hole 20 of pressure retaining valve one by air pipe line 1 and annular groove, and be input to the push rod chamber 16 of pressure retaining valve two by air pipe line A, the push rod 19 that promotes pressure retaining valve two is opened pressure retaining valve two with spool 11 tops from valve port, the pressure air that clamps in the cylinder cavity 7 is exported from gas circuit 8, clamp piston 5 reaches of cylinder, make and clamp the reduction of cylinder cavity 6 internal gas pressures, the spool 11 of pressure retaining valve one is thrown off valve port and is opened pressure retaining valve one under the pressure air effect, pressure air is input to from gas circuit 4 by pressure retaining valve one and clamps cylinder cavity 6, promotes piston 5 reaches again; When pressure retaining valve two air inlets, then pressure air is input to the radial hole 20 of pressure retaining valve two by air pipe line 10 and annular groove, and be input to the push rod chamber 16 of pressure retaining valve one by air pipe line B, the push rod 19 that promotes pressure retaining valve one is opened pressure retaining valve one with spool 11 tops from valve port, the pressure air that clamps in the cylinder cavity 6 is exported from gas circuit 4, move after clamping cylinder piston 5, make and clamp the reduction of cylinder cavity 7 internal gas pressures, the spool 11 of pressure retaining valve two is thrown off valve port and is opened pressure retaining valve two under the pressure air effect, pressure air is input to from gas circuit 8 by pressure retaining valve two and clamps cylinder cavity 7, promotes again to move behind the piston 5; When to two pressure retaining valves not during the input pressure air, two push rods 19 of two pressure retaining valves are all inoperative, two the pressure air effects of spool 11 in clamping cylinder cavity 6 and 7 all are resisted against valve port, promptly all valve port is sealed, the cavity internal pressure air of piston 5 both sides of clamping cylinder is constant, and the piston 5 that then clamps cylinder does not also move.When jig exchanged, jig was in separating pressure air input gas circuit state, and to two pressure retaining valves input pressure air not, the piston 5 that then clamps cylinder does not move, and can not change the clamped condition to workpiece.
Claims (8)
1, a kind of pneumatic pressure retaining valve device comprises clamp body (2), it is characterized in that: clamp body (2) is provided with valve body installation cavity (3) and (9), in valve body installation cavity (3) and (9) identical pressure retaining valve is installed; Pressure retaining valve comprises valve body (14), be provided with push rod chamber (16) and spool chamber (13) in the valve body (14), be provided with between push rod chamber (16) and the spool chamber (13) and connect these two chambeies and as the axially extending bore (15) of valve port, valve body (14) is provided with the radial hole (20) that communicates with axially extending bore (15); Be provided with spool (11) in the spool chamber (13), spool chamber (13) top is sealed with plug (12), plug (12) is provided with pilot hole and air hole (22), spool (11) is installed in the pilot hole, spool (11) outer surface is set with spring (21), spring (21) one ends are resisted against plug (12), the other end and spool (11) relative fixed, and spool (11) is resisted against axially extending bore (15) under the spring force effect; Be provided with push rod (19) in the push rod chamber (16), bottom, push rod chamber (16) is sealed with plug (17), bottom, push rod chamber (16) sidewall is provided with through hole (18), and push rod (19) cooperates the formation cylinder as piston with push rod chamber (16) inwall, and push rod (19) front end stretches into axially extending bore (15); Clamp body (2) is provided with and is communicated with spool chamber (13) and the air pipe line (4) that clamps cylinder cavity (6), is communicated with the air pipe line (8) of spool chamber (13) and clamping cylinder cavity (7) and is communicated with air inlet and the air pipe line of radial hole (20) (1) and (10), also is provided with air pipe line A and B on the clamp body (2) and intersects the radial hole (20) and the through hole (18) of two pressure retaining valves of correspondence connection respectively.
2, a kind of pneumatic pressure retaining valve device according to claim 1, it is characterized in that: described each valve body (14) is provided with 3 radial holes (20), and this 3 radial holes (20) center line is positioned at same plane.
3, a kind of pneumatic pressure retaining valve device according to claim 2, it is characterized in that: valve body (14) outer surface is provided with the annular groove that all is communicated with described 3 radial holes (20).
4, a kind of pneumatic pressure retaining valve device according to claim 1 is characterized in that: bottom, push rod chamber (16) sidewall on described each valve body (14) is provided with 3 through holes (18), and this 3 through holes (18) center line is positioned at same plane.
5, a kind of pneumatic pressure retaining valve device according to claim 4, it is characterized in that: valve body (14) outer surface is provided with the annular groove that all is communicated with 3 through holes (18).
6, according to claim 3 or 5 described a kind of pneumatic pressure retaining valve devices, it is characterized in that: valve body (14) outer surface is provided with seal groove, is set with sealing ring in the seal groove.
7, according to claim 3 or 5 described a kind of pneumatic pressure retaining valve devices, it is characterized in that: the end that spool (11) is resisted against axially extending bore (15) one ends is the semicircle sphere, and the semi-round ball surface is provided with seal groove, is set with sealing ring in the seal groove.
8, according to claim 3 or 5 described a kind of pneumatic pressure retaining valve devices, it is characterized in that: push rod (19) outer surface is provided with seal groove, is set with sealing ring in the seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201217006U CN201220349Y (en) | 2008-07-22 | 2008-07-22 | Pneumatic pressure-retaining valve apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201217006U CN201220349Y (en) | 2008-07-22 | 2008-07-22 | Pneumatic pressure-retaining valve apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201220349Y true CN201220349Y (en) | 2009-04-15 |
Family
ID=40573868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201217006U Expired - Lifetime CN201220349Y (en) | 2008-07-22 | 2008-07-22 | Pneumatic pressure-retaining valve apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201220349Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101633121B (en) * | 2008-07-22 | 2012-03-07 | 浙江日发数码精密机械股份有限公司 | Pneumatic pressure retaining valve device of machine tool fixture |
| CN104864120A (en) * | 2015-04-20 | 2015-08-26 | 侨健新能源科技（苏州）有限公司 | Durable mechanical valve |
| CN109048541A (en) * | 2018-08-22 | 2018-12-21 | 宁波高新区意川汽车零部件有限公司 | A kind of automobile gear burr remover |
| CN109854785A (en) * | 2018-12-24 | 2019-06-07 | 国营第一二三厂 | A kind of shell processing pressure retaining valve of air spider |
| CN111230529A (en) * | 2020-03-18 | 2020-06-05 | 苏州宝优际科技股份有限公司 | Balance clamp |
-
2008
- 2008-07-22 CN CNU2008201217006U patent/CN201220349Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101633121B (en) * | 2008-07-22 | 2012-03-07 | 浙江日发数码精密机械股份有限公司 | Pneumatic pressure retaining valve device of machine tool fixture |
| CN104864120A (en) * | 2015-04-20 | 2015-08-26 | 侨健新能源科技（苏州）有限公司 | Durable mechanical valve |
| CN109048541A (en) * | 2018-08-22 | 2018-12-21 | 宁波高新区意川汽车零部件有限公司 | A kind of automobile gear burr remover |
| CN109854785A (en) * | 2018-12-24 | 2019-06-07 | 国营第一二三厂 | A kind of shell processing pressure retaining valve of air spider |
| CN111230529A (en) * | 2020-03-18 | 2020-06-05 | 苏州宝优际科技股份有限公司 | Balance clamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090415 Effective date of abandoning: 20080722 |