CN110017392A - A kind of overflow valve suitable for injection molding machine - Google Patents
A kind of overflow valve suitable for injection molding machine Download PDFInfo
- Publication number
- CN110017392A CN110017392A CN201910389917.8A CN201910389917A CN110017392A CN 110017392 A CN110017392 A CN 110017392A CN 201910389917 A CN201910389917 A CN 201910389917A CN 110017392 A CN110017392 A CN 110017392A
- Authority
- CN
- China
- Prior art keywords
- overflow
- pressure regulation
- regulation bar
- spool
- valve
- 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.)
- Pending
Links
- 238000001746 injection moulding Methods 0.000 title claims abstract description 24
- 238000011084 recovery Methods 0.000 claims abstract description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 2
- 239000004568 cement Substances 0.000 abstract description 7
- 239000012530 fluid Substances 0.000 abstract description 7
- 230000033001 locomotion Effects 0.000 abstract description 5
- 230000008602 contraction Effects 0.000 abstract description 3
- 230000035945 sensitivity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention relates to a kind of overflow valves suitable for injection molding machine comprising valve body, spool, valve seat, pressure regulation bar and abuts against portion.Spool and valve seat are built in the inner cavity of valve body.Spool is used to seal the channel between overflow inlet and overflow outlet.The lower end of spool abuts against valve seat always, and the upper end is abutted against by pressure regulation bar.The portion of abutting against is set to the surface of pressure regulation bar.Pressure regulation bar is elastic component.When the pressure of overflow inlet is greater than the set value, pressure regulation bar is shunk, to open the channel between overflow inlet and overflow outlet；When the pressure of overflow inlet is less than setting value, recovery stretching, extension occurs for pressure regulation bar, and then spool is moved downwards under the action of pressure regulation bar abuts against power, until closing the channel between overflow inlet and overflow outlet.The control to spool relative position is realized by the contraction of pressure regulation bar itself, stretching, can effectively prevent the influence caused by valve core movement performance of plastic cement fluid.
Description
Technical field
The present invention relates to overflow valve technical field, especially a kind of overflow valve suitable for injection molding machine.
Background technique
In the prior art, overflow valve is usually by several portions such as overflow valve body, overflow spool, overflow valve spring, overflow pistons
Divide and constitute, wherein one end of overflow spool is connected to overflow valve spring, and the other end is connected to overflow valve piston.Overflow spool is close
Seal the channel (as shown in fig. 1) between overflow inlet and overflow outlet.When the pressure in oil input channel is greater than certain value, squeeze
Overflow spool and open overflow inlet and overflow outlet between channel.However, when it is suitable for injection molding machine feeding system, modeling
Glue fluid can inevitably enter in overflow valve spring, to increase the resistance of motion of overflow spool, reduce overflow valve
Sensitivity, what is more, plastic cement fluid solidify in overflow valve body, cause overflow defective valve.Thus, it would be highly desirable to technical staff's solution
The certainly above problem.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of designs of structure simply, high sensitivity, reliable working performance
Overflow valve suitable for injection molding machine.
In order to solve the above-mentioned technical problem, the present invention relates to a kind of overflow valves suitable for injection molding machine comprising valve body,
Spool, valve seat, pressure regulation bar and abut against portion.Overflow inlet and overflow outlet are provided on valve body, wherein overflow inlet opens up
In the lower end of valve body, overflow exports the side wall for being opened in valve body.Spool and valve seat are built in the inner cavity of valve body.Spool is used to
Seal the channel between overflow inlet and overflow outlet.The lower end of spool is abutted against by valve seat always, and the upper end is by pressure regulation bar
It is abutted against.The portion of abutting against is set to the surface of pressure regulation bar, the extreme position that limitation pressure regulation bar moves upwards.Pressure regulation bar is elasticity
Part.When the pressure of overflow inlet is greater than the set value, pressure regulation bar is shunk in its own length direction, thus squeeze spool and
It forces it to be moved upwards, and then opens the channel between overflow inlet and overflow outlet；When the pressure of overflow inlet is less than
When setting value, so that in its own length direction recovery stretching, extension occurs for pressure regulation bar, and then spool abuts against the work of power in pressure regulation bar
It is moved downwards with lower, until closing the channel between overflow inlet and overflow outlet.
As a further improvement of the above technical scheme, the quantity of overflow outlet is set as multiple, around the side of valve body
Wall carries out circumferential uniformly distributed.
Further improvement as above-mentioned technical proposal, the above-mentioned overflow valve suitable for injection molding machine further includes locking screw
Set, lateral wall offer external screw thread, correspondingly, are offered in compatible with above-mentioned external screw thread on the side wall of overflow inlet
Screw thread.The upper surface of locking swivel nut abuts against valve seat always.
Further improvement as above-mentioned technical proposal, the above-mentioned overflow valve suitable for injection molding machine further includes for fixing
Abut against the support frame in portion.Support frame includes connecting pedestal, and the upper plane of the mode being connected by bolts and valve body is attached.
Further improvement as above-mentioned technical proposal, the above-mentioned overflow valve suitable for injection molding machine further include being sheathed on tune
Wear-resistant sleeve on compression bar lateral wall, sinking and the inner cavity in valve body, and it is compressed by connection pedestal, is limited.
Further improvement as above-mentioned technical proposal, the above-mentioned overflow valve suitable for injection molding machine further includes sealing ring,
Its lateral wall for being also sheathed on pressure regulation bar, and be set between wear-resistant sleeve and connection pedestal.
Further improvement as above-mentioned technical proposal, the portion of abutting against are in pneumatic cylinder, hydraulic cylinder or linear motor
It is any.
In technical solution disclosed in this invention, traditional overflow valve spring is substituted using elastic pressure regulation bar, in reality
In the use process of border, the control to spool relative position is realized by the contraction of pressure regulation bar itself, extension movement, it can be effective
Ground prevents the influence caused by valve core movement performance of plastic cement fluid, so that overflow valve sensitivity with higher.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram for being suitable for the overflow valve of injection molding machine in the prior art.
Fig. 2 is the stereoscopic schematic diagram in the present invention suitable for the overflow valve of injection molding machine.
Fig. 3 is the main view in the present invention suitable for the overflow valve of injection molding machine.
Fig. 4 is the A-A cross-sectional view of Fig. 3.
1- valve body；11- overflow inlet；12- overflow outlet；2- spool；3- valve seat；4- pressure regulation bar；5- pneumatic cylinder；6- locking
Swivel nut；7- support frame；71- connection pedestal；8- wear-resistant sleeve；9- sealing ring.
Specific embodiment
In the description of the present invention, it is to be understood that, the orientation or positional relationship of the instructions such as term " on ", "lower" is base
In orientation or positional relationship shown in the drawings, it is merely for convenience of description of the present invention and simplification of the description, rather than indication or suggestion
Signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this
The limitation of invention.
Combined with specific embodiments below, the contents of the present invention are described in further detail, Fig. 2, Fig. 3 and Fig. 4 points
Do not show the stereoscopic schematic diagram, main view and A-A cross-sectional view of the overflow valve suitable for injection molding machine, by valve body 1, spool 2,
Several parts such as valve seat 3, pressure regulation bar 4 and pneumatic cylinder 5 are constituted, wherein overflow inlet 11 and overflow are respectively arranged on valve body 1
Outlet 12, overflow inlet 11 are opened in the lower end of valve body 1, and overflow outlet 12 is opened in the side wall of valve body 1.Spool 2 and valve seat 3
It is built in the inner cavity of valve body 1.Spool 3 is used to seal the channel between above-mentioned overflow inlet 11 and overflow outlet 12.Spool 2
Lower end is abutted against by valve seat 3 always, and the upper end is abutted against by pressure regulation bar 4.Pneumatic cylinder 5 is set to the surface of pressure regulation bar 4,
The extreme position that limitation pressure regulation bar 4 moves upwards.Pressure regulation bar 4 must be elastic component.So, in actual use, lead to
Contraction, the extension of toning compression bar 4 itself act to realize the control to 2 relative position of spool, can effectively prevent plastic cement stream
Body is influenced caused by 2 movenent performance of spool, so that overflow valve sensitivity with higher.
The operating principle of the above-mentioned overflow valve suitable for injection molding machine is as follows: when the pressure of overflow inlet 11 is greater than the set value
When, pressure regulation bar 4 is shunk in its own length direction, to squeeze spool 2 and it is forced to be moved upwards, and then is opened
Channel between overflow inlet 11 and overflow outlet 12；When the pressure of overflow inlet 11 is less than setting value, so that pressure regulation bar 4 exists
Recovery stretching, extension occurs for its own length direction, and then spool 2 is moved downwards under the action of pressure regulation bar 4 abuts against power,
Until closing the channel between overflow inlet 11 and overflow outlet 12.
It should be noted that abutting against portion in addition to above-mentioned pneumatic cylinder 5 can be selected, it is of course also possible to according to practical feelings
Condition selects hydraulic cylinder or linear motor etc..
For the outlet pressure for reducing plastic cement fluid, from the aspect of the nowed forming for optimizing plastic cement fluid, above-mentioned overflow goes out
The quantity of mouth 12 is set as multiple, and carries out circumferential be evenly distributed with around the side wall of valve body 1.
Convenience for replacement spool 2 considers, as advanced optimizing for the above-mentioned overflow valve suitable for injection molding machine, on
It states and is attached in a manner of removably between valve seat 3 and valve body 1, specifically can refer to following scheme progress: mating setting locking
Swivel nut 6, wall offers external screw thread on the outside, correspondingly, offers on the side wall of overflow inlet 11 and above-mentioned external screw thread phase
The internal screw thread of adaptation.The upper surface of locking swivel nut 6 abuts against valve seat 3 always, so, can be with when spool 2 is damaged
It easily carries out renewing operation, reduces the later maintenance degree of difficulty of overflow valve.
It is known that in the long-term use, wear phenomenon easily occurs for the contact area of valve seat 3 and spool 2, and then influences
The relative positional accuracy of spool 2, for this purpose, can be coated in the upper surface (i.e. the frictional contact area opposite with spool) of valve seat 3
Wearing layer (not shown), to improve the cooperation precision of valve seat 3 Yu spool 2.
In technical solution disclosed in this invention, pneumatic cylinder 5 can be fixed on support frame 7.Specific refinement scheme are as follows:
Support frame 7 includes support plate, connection pedestal 71 and is set to four support columns between the two；Pneumatic cylinder 6 is i.e. detachably solid
Due in above-mentioned support plate.The upper plane of mode and valve body 1 that connection pedestal 71 is connected by bolts is attached, fixes.
Furthermore wear-resistant sleeve 8 can also be set in the lateral wall of pressure regulation bar 4, sinking in the inner cavity of valve body 1, and can be by
Above-mentioned connection pedestal 71 is compressed, is limited.So, it avoids pressure regulation bar 4 to be directly in contact with valve body 1, drop significantly
The low rate of depreciation of pressure regulation bar 4, it is ensured that the accuracy of its own movement.
Furthermore in order to prevent as plastic cement fluid flow out overflow valve and caused by clear up burden, can also be in pressure regulation bar 4
Sealing ring 9 is arranged in lateral wall, is specifically fixed between wear-resistant sleeve 8 and connection pedestal 71.
It finally needs to illustrate that a bit, the upper end of pressure regulation bar 4 external screw thread can also be provided with, according to the actual needs of the site,
So as to quickly be realized the connection of pressure regulation bar 4 and pneumatic cylinder 5 by means of thread bush, in order to open overflow valve by force.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (7)
1. a kind of overflow valve suitable for injection molding machine, which is characterized in that including valve body, spool, valve seat, pressure regulation bar and abut against
Portion；Overflow inlet and overflow outlet are provided on the valve body, wherein the overflow inlet is opened in the lower end of the valve body
Portion, the overflow outlet are opened in the side wall of the valve body；The spool and valve seat are built in the inner cavity of the valve body；It is described
Spool is used to seal the channel between the overflow inlet and overflow outlet；The lower end of the spool is always by the valve seat
It is abutted against, the upper end is abutted against by the pressure regulation bar；The portion of abutting against is set to the surface of the pressure regulation bar, limits institute
State the extreme position that pressure regulation bar moves upwards；The pressure regulation bar is elastic component；When the pressure of the overflow inlet is greater than the set value
When, so that the pressure regulation bar is shunk in its own length direction, squeezes the spool and it is forced to be moved upwards, into
And open the channel between the overflow inlet and overflow outlet；When the pressure of the overflow inlet is less than setting value,
To which in its own length direction recovery stretching, extension occurs for the pressure regulation bar, and then the spool abuts against the effect of power in pressure regulation bar
It is moved downwards down, until closing the channel between the overflow inlet and overflow outlet.
2. being suitable for the overflow valve of injection molding machine according to claim 1, which is characterized in that the quantity setting of the overflow outlet
To be multiple, carried out around the side wall of the valve body circumferential uniformly distributed.
3. any one of -2 overflow valve suitable for injection molding machine according to claim 1, which is characterized in that further include locking screw
Set, lateral wall offer external screw thread, correspondingly, offer on the side wall of the overflow inlet and be adapted with the external screw thread
Internal screw thread；The upper surface of the locking swivel nut abuts against the valve seat always.
4. any one of -2 overflow valve suitable for injection molding machine according to claim 1, which is characterized in that further include for solid
The fixed support frame for abutting against portion；Support frame as described above includes connection pedestal, and the mode being connected by bolts is upper with the valve body
Plane is attached.
5. being suitable for the overflow valve of injection molding machine according to claim 4, which is characterized in that further include being sheathed on the pressure regulation bar
Wear-resistant sleeve on lateral wall, sinking is in the inner cavity of the valve body, and it is compressed by the connection pedestal, is limited.
6. being suitable for the overflow valve of injection molding machine according to claim 5, which is characterized in that further include sealing ring, be also arranged
In the lateral wall of the pressure regulation bar, and it is set between the wear-resistant sleeve and the connection pedestal.
7. being suitable for the overflow valve of injection molding machine described in any one of -2 according to claim 1, which is characterized in that the portion of abutting against is
Any one of pneumatic cylinder, hydraulic cylinder or linear motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910389917.8A CN110017392A (en) | 2019-05-10 | 2019-05-10 | A kind of overflow valve suitable for injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910389917.8A CN110017392A (en) | 2019-05-10 | 2019-05-10 | A kind of overflow valve suitable for injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110017392A true CN110017392A (en) | 2019-07-16 |
Family
ID=67193439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910389917.8A Pending CN110017392A (en) | 2019-05-10 | 2019-05-10 | A kind of overflow valve suitable for injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110017392A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201306485Y (en) * | 2008-12-17 | 2009-09-09 | 四川广汉士达炭素股份有限公司 | Impregnating pitch spillover valve |
| CN102878301A (en) * | 2011-07-12 | 2013-01-16 | 上海立新液压有限公司 | Overflow valve with detachable valve sleeve |
| CN203836311U (en) * | 2014-03-17 | 2014-09-17 | 平顶山市巨鹰科技有限公司 | High-pressure large-flow direct-acting overflow valve |
| CN205026110U (en) * | 2015-10-14 | 2016-02-10 | 陆雄机械（浙江）有限公司 | Voltage stabilizer |
| CN210106693U (en) * | 2019-05-10 | 2020-02-21 | 苏州宝氏自动化科技有限公司 | Overflow valve suitable for injection molding machine |
-
2019
- 2019-05-10 CN CN201910389917.8A patent/CN110017392A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201306485Y (en) * | 2008-12-17 | 2009-09-09 | 四川广汉士达炭素股份有限公司 | Impregnating pitch spillover valve |
| CN102878301A (en) * | 2011-07-12 | 2013-01-16 | 上海立新液压有限公司 | Overflow valve with detachable valve sleeve |
| CN203836311U (en) * | 2014-03-17 | 2014-09-17 | 平顶山市巨鹰科技有限公司 | High-pressure large-flow direct-acting overflow valve |
| CN205026110U (en) * | 2015-10-14 | 2016-02-10 | 陆雄机械（浙江）有限公司 | Voltage stabilizer |
| CN210106693U (en) * | 2019-05-10 | 2020-02-21 | 苏州宝氏自动化科技有限公司 | Overflow valve suitable for injection molding machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105889159B (en) | A kind of hydraulic system for possessing super-pressure fan-out capability | |
| CN101504088B (en) | Multifunctional general balance valve | |
| CN110685652B (en) | Concentric constant-flow integrated water distributor and application method thereof | |
| CN104514890A (en) | Novel throttle valve | |
| CN202040134U (en) | Cartridge balanced valve | |
| CN201363330Y (en) | Plate-type one-way speed-regulating valve | |
| CN110017392A (en) | A kind of overflow valve suitable for injection molding machine | |
| CN202596692U (en) | Underground intelligent water distribution nozzle device | |
| CN102434527A (en) | Hydraulic cylinder | |
| CN202834255U (en) | Flow control valve | |
| CN210106693U (en) | Overflow valve suitable for injection molding machine | |
| CN208474515U (en) | A kind of intelligent valve of maintenance easy to disassemble | |
| CN202901425U (en) | Self-operated differential pressure valve | |
| CN201802922U (en) | Continuous-flow three-way shifting valve for conveying fluids | |
| CN107956533A (en) | A kind of engine with flow control valve | |
| CN203516830U (en) | High-pressure balanced type three-way control valve | |
| CN203906199U (en) | Oil-saving type oil pump | |
| CN208997362U (en) | A kind of piston fluid regulating valve | |
| CN202392179U (en) | T-shaped belt pulling and filtering ball valve | |
| CN105715523A (en) | Self-washing type sand setting prevention small-displacement oil pump | |
| CN207315773U (en) | A kind of multiple adjustable hydraulic cylinder of buffer speed | |
| CN207961115U (en) | A kind of inserted valve and driving detent mechanism of improvement speed regulating structure | |
| CN220286470U (en) | Flow balance valve based on differential pressure sensor | |
| CN208734366U (en) | A kind of coal mine dynamic hydraulic bracket hydraulic control one-way valve | |
| CN209540080U (en) | A kind of valve body mechanism facilitating process and assemble |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |