CN210265872U - Resistance to compression gas cap valve - Google Patents
Resistance to compression gas cap valve Download PDFInfo
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- CN210265872U CN210265872U CN201920691384.4U CN201920691384U CN210265872U CN 210265872 U CN210265872 U CN 210265872U CN 201920691384 U CN201920691384 U CN 201920691384U CN 210265872 U CN210265872 U CN 210265872U
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Abstract
The utility model discloses a resistance to compression gas cap valve, including valve body, case, the cavity that link up about being equipped with in the valve body, the case is installed in the cavity, still includes the supporting shoe, the supporting shoe is installed in the cavity, the lower extreme and the supporting shoe fixed mounting of case, the bottom surface of supporting shoe flushes with the bottom surface of valve body, be equipped with the air vent on the supporting shoe, air vent and cavity intercommunication. The utility model discloses an increase a supporting shoe in the bottom of current gas top valve, when the case was closed, the pressure that the case upper surface bore can be transmitted on the supporting shoe, and because the bottom surface of supporting shoe flushes with the bottom surface of valve body, so the bottom surface of supporting shoe is also equivalent to the surface butt with the mounting hole of mould, thereby make the pressure that the case bore go in can directly transmitting the mould, thereby the pressure of the contact surface between case and the valve body cavity has been reduced, reduce wearing and tearing between the two, prolong the life of case.
Description
Technical Field
The utility model relates to a plastic mould field, especially demoulding mechanism of mould.
Background
In the plastic injection mold, after the product is injection molded, most of the products are demoulded by using a blowing mode, and a common air top valve is used for realizing the blowing function. In the prior art, a gas cap valve generally comprises a valve body and a valve core, wherein a cavity is arranged in the valve body, and the valve core is arranged in the cavity, so that the valve core can move up and down in the valve body. The upper part of the valve core is generally provided with a conical sealing head, the lower part of the valve core is hidden in the cavity, the upper end of the cavity of the valve body is provided with a conical step surface, the valve core is sleeved with a return spring, and the return spring provides pressure, so that the upper end of the cavity is tightly covered by the sealing head of the valve core. Install the valve body in the mould during use, when accomplishing moulding plastics, ventilate toward the mould in, gaseous effect is in the bottom of valve body to produce ascending pressure to the case, the pressure of spring is overcome to atmospheric pressure, forces the case rebound, thereby opens the cavity, and gaseous upper end from the pneumatic valve is discharged, thereby blows off the product of the completion of moulding plastics.
But because the top of the valve core is always subjected to the injection molding pressure of a product in the working process, the valve core is completely supported only by the conical step surface. After long-term compression and reciprocating movement, the conical step surface is easily abraded, so that the sealing is not tight, the formed product is prevented from leaking glue and getting cloak, the containing cavity of the gas cap cannot be used, and the gas leakage phenomenon is caused.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: a more durable gas cap valve is provided that overcomes the above-mentioned deficiencies.
The utility model provides a solution of its technical problem is: the pressure-resistant gas cap valve comprises a valve body and a valve core, wherein a cavity which is communicated up and down is formed in the valve body, the valve core is installed in the cavity, the pressure-resistant gas cap valve further comprises a supporting block, the supporting block is installed in the cavity, the lower end of the valve core is fixedly installed with the supporting block, the bottom surface of the supporting block is flush with the bottom surface of the valve body, a vent hole is formed in the supporting block, and the vent hole is communicated with the cavity.
The utility model has the advantages that: the utility model discloses an increase a supporting shoe in the bottom of current gas top valve, when the case was closed, the pressure that the case upper surface bore can be transmitted on the supporting shoe, and because the bottom surface of supporting shoe flushes with the bottom surface of valve body, so the bottom surface of supporting shoe is also equivalent to the surface butt with the mounting hole of mould, thereby make the pressure that the case bore go in can directly transmitting the mould, thereby the pressure of the contact surface between case and the valve body cavity has been reduced, reduce wearing and tearing between the two, prolong the life of case.
As a further improvement of the technical scheme, the valve further comprises a gasket, wherein the gasket is arranged at the bottom of the valve body, and air holes are formed in the gasket. The gasket is the metal gasket that intensity is high, through increasing the gasket, not only can conveniently adjust the mounting height of gas top valve, and the gasket can play the atress condition that improves the supporting shoe moreover, makes the compressive capacity of gas top valve higher, in addition, when dismantling the valve body, can dismantle through the gasket, external force direct action when avoiding dismantling is on the valve body. Meanwhile, the air inlet amount can be controlled by utilizing the air holes in the gasket, and the gas introduced into the die can better enter the gas cap valve so as to jack up the valve core.
As a further improvement of the technical scheme, the upper end of the gasket is provided with a mounting groove, the lower part of the valve body is embedded into the mounting groove, and the gasket and the valve body are mounted and combined together, so that the integrity of a product can be improved.
As a further improvement of the technical scheme, the upper end of the supporting block is provided with a groove, the lower end of the valve core is provided with a convex block, and the convex block is embedded in the groove. And the valve core and the supporting block form good fixed installation by utilizing the interference fit of the convex block and the groove.
As a further improvement of the above technical solution, the protrusion is integrally formed with the valve element.
As a further improvement of the technical scheme, a boss is arranged in the cavity, and an elastic component is arranged between the boss and the supporting block. By using the elastic component, the valve core and the valve body form a good closing state under the condition of not blowing air.
As a further improvement of the technical scheme, the number of the vent holes is four, and the four vent holes are uniformly distributed on the supporting block.
As a further improvement of the technical scheme, the middle of the supporting block is also provided with an exhaust hole. The supporting block is provided with an exhaust hole, so that an air layer cannot be formed between the valve core and the supporting block when the valve core and the supporting block are installed.
As a further improvement of the technical scheme, the upper end of the valve core is in an inverted cone shape, and the upper end of the cavity is also in an inverted cone shape.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.
Fig. 1 is an exploded view of the present invention;
fig. 2 is a cross-sectional view of the present invention;
fig. 3 is a cross-sectional view of another embodiment of the present invention.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the coupling/connection relationships mentioned herein do not mean that the components are directly connected, but mean that a better coupling structure can be formed by adding or reducing coupling accessories according to specific implementation conditions. All technical characteristics in the invention can be interactively combined on the premise of not conflicting with each other.
The first embodiment is as follows: referring to fig. 1-2, the pressure-resistant gas cap valve comprises a valve body 1 and a valve core 2, wherein the upper end of the valve core is in an inverted cone shape, the upper end of the cavity is also in an inverted cone shape, the valve body 1 is provided with a cavity 11 which is communicated up and down, the valve core 2 is arranged in the cavity 11, the pressure-resistant gas cap valve further comprises a supporting block 3, the supporting block 3 is arranged in the cavity 11, the upper end of the supporting block 3 is provided with a groove 32, the lower end of the valve core 2 is provided with a convex block 21, the convex block 21 is embedded in the groove 32, the middle of the supporting block 3 is also provided with an exhaust hole 33. The bottom surface of the supporting block 3 is flush with the bottom surface of the valve body 1, four vent holes 31 evenly distributed on the supporting block are formed in the supporting block 3, and the vent holes 31 are communicated with the cavity 11. A gasket 4 is further arranged below the valve body, and air holes 41 are formed in the gasket. A boss 12 is arranged in the cavity 11, a coil spring 5 is arranged between the boss 12 and the supporting block 3, the upper end of the coil spring 5 is propped against the lower surface of the boss 12, and the lower end of the coil spring is propped against the upper surface of the supporting block. Referring to fig. 2, the shape of the cavity is adaptively adjusted according to a member disposed in the cavity, in this embodiment, the shape of the upper end of the cavity is the same as the shape of the upper end of the valve element, and then downward, the cavity is cylindrical, and then downward, the inner diameter of the cavity is appropriately enlarged to accommodate the coil spring due to the installation of the coil spring, and then downward, the inner diameter of the cavity is further enlarged due to the installation of the support block in the cavity.
When the pneumatic jacking valve works, the pneumatic jacking valve is arranged in an installation cavity of a die, the lower surface of the gasket 4 is abutted against the bottom surface of the installation cavity, the upper surface of the gasket 4 is abutted against the bottom surface of the valve body 1, and when the installation cavity is not filled with air, a valve core is under the action of a spiral spring, and a perfect seal is formed between the inverted conical head of the valve core and the cavity; and after the injection molding is finished, when a product needs to be ejected, high-pressure air is introduced into the installation cavity, the high-pressure air firstly enters between the gasket and the valve body through the air holes 41 of the gasket 4, then the supporting block is ejected upwards by air pressure, the supporting block slides upwards, so that a gap between the supporting block and the gasket is enlarged, then the air enters the cavity from the air holes 31 of the supporting block, the air continues to eject the valve core upwards after entering the cavity, and the head of the valve core is conical, so that after the valve core moves upwards for a certain distance, the valve core and the valve body are not sealed again, and the air is smoothly discharged upwards from the valve core and enters the product after being ejected and molded.
Example two: except for interference fit assembly, the valve core and the supporting block can be assembled in a screw mode, the screw is screwed in from the bottom of the supporting block and then is screwed in to the bottom of the valve core, and therefore assembly of the valve core and the supporting block is completed. When the screw is used for assembly, no vent hole is needed to be arranged additionally.
In the third embodiment, the elastic member may be a spring plate, elastic plastic or other elastic member besides the coil spring. The rest of the structure is the same as the embodiment.
Example four: besides 4 ventilation holes, the number of the ventilation holes can be 3 or 5, and the ventilation holes are selectively controlled according to the actual displacement of the ventilation holes. The rest of the structure is the same as the embodiment.
Fifth embodiment, referring to fig. 3, a mounting groove is provided on the gasket, and the valve body 1 is nested in the mounting groove. The rest of the structure is the same as the embodiment. In the first embodiment, the valve body is only arranged above the gasket when in use and is relatively independent, and in the first embodiment, the valve body and the gasket are assembled together, so that the integrity of the product can be improved, and the loss of the product in packaging and transportation can be reduced.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.
Claims (9)
1. The utility model provides a resistance to compression gas cap valve, includes valve body, case, be equipped with the cavity that link up from top to bottom in the valve body, the case is installed in the cavity, its characterized in that: the valve body is characterized by further comprising a supporting block, the supporting block is arranged in the cavity, the lower end of the valve core is fixedly arranged with the supporting block, the bottom surface of the supporting block is flush with the bottom surface of the valve body, the supporting block is provided with a vent hole, and the vent hole is communicated with the cavity.
2. The pressure resistant gas cap valve according to claim 1, wherein: the valve body is characterized by further comprising a gasket, wherein the gasket is arranged at the bottom of the valve body, and air holes are formed in the gasket.
3. The pressure resistant gas cap valve according to claim 2, wherein: the upper end of gasket is equipped with the mounting groove, the lower part embedding of valve body is in the mounting groove.
4. The pressure resistant gas cap valve according to claim 1, wherein: the upper end of the supporting block is provided with a groove, the lower end of the valve core is provided with a convex block, and the convex block is embedded into the groove.
5. The pressure resistant topping valve of claim 4 wherein: the lug and the valve core are integrally formed.
6. The pressure resistant gas cap valve according to claim 1, wherein: a boss is arranged in the cavity, and an elastic component is arranged between the boss and the supporting block.
7. The pressure resistant gas cap valve according to claim 1, wherein: the number of the vent holes is four, and the four vent holes are uniformly distributed on the supporting block.
8. The pressure resistant gas cap valve according to claim 1, wherein: and the middle of the supporting block is also provided with an exhaust hole.
9. The pressure resistant gas cap valve according to claim 1, wherein: the upper end of the valve core is in an inverted cone shape, and the upper end of the cavity is also in an inverted cone shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920691384.4U CN210265872U (en) | 2019-05-14 | 2019-05-14 | Resistance to compression gas cap valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920691384.4U CN210265872U (en) | 2019-05-14 | 2019-05-14 | Resistance to compression gas cap valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210265872U true CN210265872U (en) | 2020-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920691384.4U Active CN210265872U (en) | 2019-05-14 | 2019-05-14 | Resistance to compression gas cap valve |
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| Country | Link |
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| CN (1) | CN210265872U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185804A (en) * | 2019-05-14 | 2019-08-30 | 佛山一精模具配件有限公司 | A kind of resistance to compression pneumatic jack valve |
-
2019
- 2019-05-14 CN CN201920691384.4U patent/CN210265872U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185804A (en) * | 2019-05-14 | 2019-08-30 | 佛山一精模具配件有限公司 | A kind of resistance to compression pneumatic jack valve |
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