CN104421465A

CN104421465A - Check valve

Info

Publication number: CN104421465A
Application number: CN201310378864.2A
Authority: CN
Inventors: 吴炫隆
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-08-27
Filing date: 2013-08-27
Publication date: 2015-03-18
Anticipated expiration: 2033-08-27
Also published as: CN104421465B

Abstract

The invention provides a check valve, comprising a valve body, a lining, a valve piece and an elastic piece. The valve body comprises an accommodating chamber, a valve hole, a positioning shoulder surface and an oil guide hole; the lining made of compressible elastic material is installed in the accommodating chamber and abutted against the positioning shoulder surface, and provided with an annular shoulder part adjacent to the accommodating chamber; the valve piece is adjacent to the lining and installed in the accommodating chamber; the elastic piece is abutted against one side of the valve piece, and the elastic force of the elastic piece provides constant tendency for the valve piece to abut against the annular shoulder part. By adopting the cooperation of the lining and the valve piece, and the elastic force effect of the elastic piece, the components can achieve good anti-seepage effect without high-precision machining.

Description

Check valve

Technical field

The present invention relates to a kind of control valve for fluids, particularly relate to a kind of check valve be applicable in the oil circuit control of Oil-pressure clamping head.

Background technique

As shown in Figure 1, existing a kind of Oil-pressure clamping head (TaiWan, China is numbering No. 201130596 patent application cases openly), comprises the driving ring 6 that the second oil path control unit 5, that the first oil path control unit 4, that oil hydraulic cylinder 3, that fixed base 2, that 1, one, a support is installed on this support 1 inside is arranged at this fixed base 2 side is installed on this oil hydraulic cylinder 3 side is installed on this oil hydraulic cylinder 3 side can drive by this first oil path control unit 4 and this second oil path control unit 5 and the shaft-cup 7 being linked to this driving ring 6 for a pair.Coordinate ginseng Fig. 2 again, this first oil path control unit 4 has a urceolus 401, and is installed on the elastic component 403 that the block bead 402 of this urceolus 401 inside and provide the butted valve port portion 404 in this urceolus 401 of this block bead 402, and this second oil path control unit 5 has a urceolus 501, and is installed on the elastic component 503 that the block bead 502 of this urceolus 501 inside and provide the butted valve port portion 504 in this urceolus 501 of this block bead 502.

Pressure oil is utilized to import this fixed base 2 inner, this oil hydraulic cylinder 3 is driven to abut against in this first oil path control unit 4, and when can this driving ring 6 be driven to produce displacement vertically by this first oil path control unit 4 pressure oil, described shaft-cup 7 just can be driven to produce relative to a pair collet chuck 8 unclamp, just can carry out hyperphoric workpiece.When pressure oil, to import this fixed base 2 more inner, and by this second oil path control unit 5 by pressure oil in order to drive this driving ring 6 vertically oppositely displacement time, just can drive described shaft-cup 7 to produce bundle folder relative to described collet chuck 8, and can clamp workpiece generation.And when this state, pressure oil can be imported again order about this oil hydraulic cylinder 3 and be away from this first oil path control unit 4 and this second oil path control unit 5, the elastic component 403 of this first oil path control unit 4 is utilized to hold described block bead 402,502 with the elastic force of the elastic component 503 of this second oil path control unit 5, this first oil path control unit 4 can be made to produce with this second oil path control unit 5 and to close non-return effect, described collet chuck 8 clamping work pieces is made, in order to carrying out processing operation to keep oil.

Although, utilize the setting of this first oil path control unit 4 and this second oil path control unit 5, the oil circuit that can reach expection controls object, but because described block bead 402, 502 with this urceolus 401, 501 are all hard metal material, unless described block bead 402, 502 with described valve port portion 404, 504 through high-accuracy processing, otherwise when described block bead 402, 502 abut against in described valve port portion 404, time on 504, at described block bead 402, 502 with described valve port portion 404, just seepage may be produced between 504, and then affect processing quality, and described block bead 402, 502 with described valve port portion 404, the high-accuracy processing of 504, not only processing time consuming, also cost can be increased.

Summary of the invention

The object of the present invention is to provide a kind of check valve not needing precision machining just can produce better anti-seepage effect.

Check valve of the present invention, comprise a valve body, a lining, a valve member and an elastic component, this valve body is along an Axis Extension, there is a room, one is arranged at this room side and aperture is less than the valve opening of this room along this axis, shoulder face, location and an oil guiding hole be connected with this valve opening being arranged at this room and this valve opening joining place, this lining is can be made by the elastic material compressed, to be installed in this room and to be resisted against on this shoulder face, location, and there is a ring shoulder adjacent to this room, this valve member is adjacent to this lining and be installed in this room, this elastic component can produce location relative to this valve body, and it is butted in this valve member side, its elastic force provides this valve member perseverance to keep the trend abutted against towards this ring shoulder.

Check valve of the present invention, this lining is hollow tube-shape and cross section is U-shaped, and there is the ring wall that a location wall and are vertically connected at this location wall, this location wall has one and is resisted against first end face in this shoulder face, location, the perforation of the second end face in contrast to this first end face, this first end face of connection and this second end face, this ring shoulder is located at this perforation and this second end face joining place, and this ring wall is sheathed in this room.

Check valve of the present invention, this check valve also comprises one and is installed on this valve body and is arranged at the inner core in this room, this inner core has the barrel that an end wall and are vertically connected at this end wall, this end wall and this barrel define an endoporus jointly, this end wall has the perforation that can be communicated with this endoporus, this elastic component to be installed in this endoporus and to be resisted against this end wall, and this barrel is arranged in inside this ring wall.

Check valve of the present invention, this valve body also have one contrary with this room arrange and be positioned at that the slide opening of this valve opening opposite side and one is connected with this slide opening along this axis draw oilhole, this check valve also comprises one and to slide and push away valve part and be installed in this slide opening is fixed on this valve body and is provided this to push away valve part produce spacing plug member in this slide opening, this pushes away valve part has one and can extend to the push rod of this valve member side through this valve opening, pressure oil draws oilhole be introduced into this slide opening from this, this pushes away valve part can promote this valve member is resisted against this ring shoulder closing position by one, move to the enable possition that is away from this ring shoulder.

Check valve of the present invention, this valve member towards the direction being away from this axis, and is skewed relative to this axis to the direction of the press power of the ring shoulder of this lining.

Beneficial effect of the present invention is: utilize coordinating of this lining and this valve member, and the elastic force effect of this elastic component, this valve member can be made closely to urge on this ring shoulder, not only do not need to carry out high-accuracy processing to this valve body and this valve member, and preferably anti-seepage effect can be produced.

Accompanying drawing explanation

Fig. 1 is the combination section of existing a kind of Oil-pressure clamping head;

Fig. 2 is the combination section of an oil path control unit of existing this kind of Oil-pressure clamping head;

Fig. 3 is the combination section of a preferred embodiment of check valve of the present invention;

Fig. 4 is an action schematic diagram of this preferred embodiment.

Embodiment

Below in conjunction with drawings and Examples, the present invention is described in detail.

Consult Fig. 3, a preferred embodiment of check valve of the present invention, be applicable to the oil circuit control (coordinating the Oil-pressure clamping head of ginseng Fig. 1) of the Oil-pressure clamping head of toolroom machine, this check valve comprises a valve body 10, lining 20, inner core 30, valve member 40, elastic component 50, and pushes away valve part 60 and a plug member 70.

This valve body 10 is arranged along an axis L, and has a room 11, and be arranged at this room 11 side and the valve opening 12, that aperture is less than this room 11 is arranged at that this room 11 is contrary with this room 11 with 13, one, the shoulder face, location of this valve opening 12 joining place to be arranged and the slide opening 14, being positioned at this valve opening 12 opposite side along this axis L to be connected with this valve opening 12 and to be connected with this slide opening 14 perpendicular to the oil guiding hole 15 of this axis L and one and to draw oilhole 16 perpendicular to this axis L along this axis L.

This lining 20 is can be made by the elastic material compressed (the present embodiment can tap a rubber tree material), to be installed in this room 11 and to be resisted against on this shoulder face, location 13, this lining 20 is in hollow tube-shape and cross section is U-shaped, and there is a location wall 21 and one be vertically connected at this location wall 21 and the ring wall 22 extended along this axis L, this location wall 21 has the first end face 211 that is resisted against this shoulder face, location 13, second end face 212 in contrast to this first end face 211, a perforation 213 being communicated with this first end face 211 and this second end face 212 and one are located at the ring shoulder 214 of this perforation 213 and this second end face 212 joining place, in the present embodiment, the cross section of this ring shoulder 214 is in protruding circular arc planar, this ring wall 22 is sheathed in this room 11.

This inner core 30 is installed on this valve body 10 and is arranged in this room 11, and have one correspond to the end wall 31 of this room 11 opening and one be vertically connected at this end wall 31 and the barrel 32 extended along this axis L, this end wall 31 defines an endoporus 33 jointly with this barrel 32, this end wall 31 has the perforation 311 that can be communicated with this endoporus 33, and this barrel 32 is arranged in inside the ring wall 22 of this lining 20.

This valve member 40 is adjacent to this lining 20 and be installed in this room 11 and this endoporus 33, this valve member 40 is to the direction of the press power F of the ring shoulder 214 of this lining 20 towards the direction being away from this axis L, and this press power F is the skewed of inclination 45 degree relative to this axis L.The diameter of this valve member 40 is less than the internal diameter of this endoporus 33.

This elastic component 50 to be installed in this endoporus 33 and to be resisted against between this end wall 31 and this valve member 40, and location can be produced relative to this valve body 10, the elastic component 50 of the present embodiment is Compress Spring, and its elastic force provides this valve member 40 perseverance to keep the trend abutted against towards this ring shoulder 214.

This pushes away valve part 60 and can slide and be installed in this slide opening 14, and has one and can extend to the push rod 61 of this valve member 40 side through this valve opening 12.

This plug member 70 is fixed on slide opening 14 opening of this valve body 10, and provides this to push away valve part 60 to produce spacing in this slide opening 14.

Again as shown in Figure 3, at pressure oil not under this oil guiding hole 15 and this draw the state that oilhole 16 is directed in this valve body 10, this valve member 40 is subject to the elastic force effect of this elastic component 50, this valve member 40 can be made to compel to be butted on this ring shoulder 214 and be positioned at a closing position, that is, this valve member 40 can by this valve opening 12 and this room 11 estrangement completely.

Again as shown in Figure 4, when pressure oil draws (as shown in solid arrow) when oilhole 16 is incorporated in this valve body 10 from this, can to this push away valve part 60 produce push away the effect of pulling, this pushes away valve part 60 and understands the direction displacement along axis L towards this valve member 40 and slide in this slide opening 14, utilize this push rod 61 can promote this valve member 40 to be moved towards an enable possition by closing position, and make this valve member 40 be away from this ring shoulder 214, simultaneously, from the pressure oil that this oil guiding hole 15 imports, can along this valve opening 12, this perforation 213, this room 11 flows, (as shown in imaginary line arrow) in predetermined oil circuit is led to finally by by this perforation 311, now, this elastic component 50 be under pressure oil effect can be confined state, and contain back and release elastic force, pressure oil once this valve body 10 outside stops pumping, utilize the elastic force effect of this elastic component 50, this valve member 40 can be made again to retract this closing position by enable possition, and the urgent state being butted on this ring shoulder 214 reverted back to as shown in Figure 3.When this valve member 40 is in enable possition, the diameter of this valve member 40 is utilized to be less than the effect of the internal diameter of this endoporus 33, and authorized pressure oil smooth flow between this valve member 40 and this barrel 32.

Therefore, the present invention utilizes this lining 20 to be installed on room 11 inside of this valve body 10, and this location wall 21 is against being positioned on this shoulder face, location 13, make this valve member 40 when closing position, before being urged to this shoulder face, location 13 just can with closely sealed subsides place of this ring shoulder 214, and because the direction of this valve member 40 to the press power F of this ring shoulder 214 is not parallel to this axis L, and to tilt 45 degree skewed relative to this axis L, even if permanent use also can not produce crushing to this lining 20, and this valve body 10, this valve member 40 does not need to carry out precision machining, just can reach preferably barrier properties, when this check valve is installed on Oil-pressure clamping head, the firm clamping of Oil-pressure clamping head to workpiece can also be guaranteed, and the processing quality of energy lifting workpieces.

Claims

1. a check valve, comprise a valve body, lining, a valve member and an elastic component, the feature of this check valve is:

This valve body, along an Axis Extension, have a room, one be arranged at this room side and aperture is less than valve opening, shoulder face, location and the oil guiding hole be connected with this valve opening being arranged at this room and this valve opening joining place of this room along this axis;

This lining, can be made by the elastic material compressed, to be installed in this room and to be resisted against on this shoulder face, location, and having a ring shoulder adjacent to this room;

This valve member, is installed in this room adjacent to this lining;

This elastic component, can produce location relative to this valve body, and butted in this valve member side, and its elastic force provides this valve member perseverance to keep the trend abutted against towards this ring shoulder.

2. check valve according to claim 1, it is characterized in that: this lining is hollow tube-shape and cross section is U-shaped, and there is the ring wall that a location wall and are vertically connected at this location wall, this location wall has one and is resisted against first end face in this shoulder face, location, the perforation of the second end face in contrast to this first end face, this first end face of connection and this second end face, this ring shoulder is located at this perforation and this second end face joining place, and this ring wall is sheathed in this room.

3. check valve according to claim 2, it is characterized in that: this check valve also comprises one and is installed on this valve body and is arranged at the inner core in this room, this inner core has the barrel that an end wall and are vertically connected at this end wall, this end wall and this barrel define an endoporus jointly, this end wall has the perforation that can be communicated with this endoporus, this elastic component to be installed in this endoporus and to be resisted against this end wall, and this barrel is arranged in inside this ring wall.

4. check valve according to claim 3, it is characterized in that: this valve body also have one contrary with this room arrange and be positioned at that the slide opening of this valve opening opposite side and one is connected with this slide opening along this axis draw oilhole, this check valve also comprises one and to slide and push away valve part and be installed in this slide opening is fixed on this valve body and is provided this to push away valve part produce spacing plug member in this slide opening, this pushes away valve part has one and can extend to the push rod of this valve member side through this valve opening, pressure oil draws oilhole be introduced into this slide opening from this, this pushes away valve part can promote this valve member is resisted against this ring shoulder closing position by one, move to the enable possition that is away from this ring shoulder.

5. check valve according to any one of claim 1 to 3, is characterized in that: this valve member towards the direction being away from this axis, and is skewed relative to this axis to the direction of the press power of the ring shoulder of this lining.