CN208960736U

CN208960736U - A kind of interior high pressure sealing push top

Info

Publication number: CN208960736U
Application number: CN201821411504.2U
Authority: CN
Inventors: 李经明; 欧阳翎; 胥志高; 王国; 孙里奇
Original assignee: Henan Xing Di Forging Equipment Manufacturing Co Ltd
Current assignee: HENAN MENGDIAN GROUP XINGDI FORGING AND STAMPING EQUIPMENT MANUFACTURING Co.,Ltd.
Priority date: 2018-08-29
Filing date: 2018-08-29
Publication date: 2019-06-11
Anticipated expiration: 2028-08-29

Abstract

The utility model discloses a kind of interior high pressure sealings to have a haircut, including push top set, from the inside to the outside equipped with the push top core III on push top core I, the push top core II being fixedly connected with push top core I, insertion push top core II in push top set inner cavity；Push top III lower end of core is cased with the sealing ring pushed against with push top core II, and the circumferential apertures of pilot seal circle are equipped at the top of the push top core III；This push top is when in use, highly pressurised liquid enters and squeezes sealing ring by push top injection inside workpiece, highly pressurised liquid by the circumferential apertures at III top of push top core, make sealing ring by compression swelling, by sealing ring and the push top set close swelling of inner wall, realize sealing, pressure is higher, and pressing force is higher, dynamic seal structure can be achieved, after solving sealing ring damage, the problem of can not sealing, and push top core III need to be only dismantled when maintenance can be completed；This push top is set to have the advantages that sealing effect is good, long service life, facilitates maintenance.

Description

A kind of interior high pressure sealing push top

Technical field

The utility model relates to Hydraulic shaping device fields, have a haircut more particularly, to a kind of interior high pressure sealing.

Background technique

Hydraulic shaping technology is a fast-developing technology at home in recent years.This technology is by liquid in complexity In mold cavity, a technology of high-pressure molding is carried out to the complex characteristic curved surface of pipe, plate parts；When in use, hydraulic press Push top is pushed into mold left and right ends and is sealed by left and right sides cylinder, it is desirable to which push top has good leakproofness and service life It is long, it is usually sealed by installing a sealing ring between push top set inner cavity and push top, but in actual use, When processing thin-wall workpiece, thin-wall workpiece can be extruded into the gap between push top and push top set inner cavity, be damaged to sealing ring, Seal failure is caused, mass production is influenced.

Utility model content

For overcome the deficiencies in the prior art, the utility model provides that a kind of sealing effect is good, long service life, disassembly side Just, interior high pressure sealing that is compact-sized, facilitating maintenance is had a haircut.

The technical scheme adopted by the utility model to solve the technical problem is as follows:

A kind of interior high pressure sealing push top, including push top set, in push top set inner cavity from the inside to the outside equipped with push top core I and Push top core I be fixedly connected push top core II, insertion push top core II on push top core III；III lower end of push top core is cased with and has a haircut Core II push against sealing ring, it is described push top core III at the top of be equipped with pilot seal circle circumferential apertures.

As a preference, the sealing ring is equipped with the outer annular recess opposite with circumference hole site.

As a preference, the push top core II is connect by screw with push top core I.

As a preference, push top II bottom end of core is equipped with the O-ring seals I pushed against with push top core I.

As a preference, equipped with the O-ring seals II pushed against with sealing ring on push top III side wall of core.

The beneficial effects of the utility model are: this push top is when in use, highly pressurised liquid is high by push top injection inside workpiece Press liquid enters and squeezes sealing ring by the circumferential apertures at push top core III top, makes sealing ring by compression swelling, by sealing ring with push away Sealing is realized in the close swelling of headgear inner wall, and pressure is higher, and pressing force is higher, it can be achieved that dynamic seal structure, solves sealing ring After damage, the problem of can not sealing, and push top core III need to be only dismantled when maintenance can be completed；Make this push top that there is sealing effect Well, long service life, facilitate the advantages of maintenance.

Detailed description of the invention

The present invention will be further described with reference to the accompanying drawings and examples.

Fig. 1 is the schematic cross-sectional view of the utility model.

Specific embodiment

Referring to Fig.1, a kind of interior high pressure sealing push top, including push top set 1, push top cover in 1 inner cavity from the inside to the outside equipped with push top The push top core III 4 that core I 2, the push top core II 3 being fixedly connected with push top core I 2, insertion are had a haircut on core II 3；The lower end cap of core III 4 of having a haircut There is the sealing ring 5 pushed against with push top core II 3, III 4 top of push top core is equipped with the circumferential apertures 6 of pilot seal circle 5；1 side is covered in push top Wall is equipped with first runner 11, I 2 center of push top core is equipped with L-shaped second flow channel 12, and II 3 center of push top core is equipped with third stream Road 13, push top core III 4 are inserted into third flow channel 13 and are equipped with the 4th centrally located runner 14, first runner 11, second flow channel 12, a channel for high pressure fluid flow is formed between third flow channel 13, the 4th runner 14, is covered by push top core I 2 and push top 1 is fixedly connected, and successively installation push top core II 3, push top core III 4, guarantee first runner 11, second flow channel 12, third flow channel 13, The correspondence of position between 4th runner, 14 position, avoids the occurrence of dislocation.

After highly pressurised liquid enters workpiece by channel, enters and squeeze close by the circumferential apertures 6 at III 4 top of push top core Seal 5 makes sealing ring 5 that sealing ring 5 and the push top set close swelling of 1 inner wall be realized sealing, the pressure of highly pressurised liquid by compression swelling Power is bigger, and the pressing force of 5 pairs of sealing ring push top 1 inner walls of set is bigger, realizes a dynamic sealing, is improved leakproofness, Make sealing ring 5 will not due to the damage of thin-wall workpiece loss of seal, reduce sealing ring replacement the frequency；It is close to further increase Feng Xing is equipped with the outer annular recess 51 opposite with 6 position of circumferential apertures on sealing ring 5, and 51 side wall of outer annular recess is arc-shaped, increases close Area of the seal 5 by fluid pressure, the area for making sealing ring 5 be pressed on push top 1 inner wall of set increase；It is overhauled to push top When, push top core III 4 need to only be taken out from push top II, realize fast assembling-disassembling and maintenance.

Push top core II 3 is connect by screw 7 with push top core I 2, and 7 middle part of screw is hollow, to will not influence second flow channel 12 With the connection between third flow channel 13, while push top II 3 bottom end of core be equipped with push top core I 2 push against O-ring seals I 8, increase The sealing having a haircut between core II 3 and core I 2 of having a haircut；The O-ring seals II 9 pushed against with sealing ring 5 are housed on push top III 4 side wall of core, Gap when avoiding highly pressurised liquid by entering outer annular recess 51 after circumferential apertures 6, from sealing ring 5 and push top III 4 lateral wall of core Leakage, fluctuates the pressure of highly pressurised liquid, influences the stabilization of batch production.

According to above-mentioned principle, the utility model can also be made appropriate changes and modifications to the above embodiments.Therefore, The utility model is not limited to specific embodiment disclosed and described above, to some modifications and changes of the utility model It should also be as falling into the protection scope of the claims of the present utility model.

Claims

1. a kind of interior high pressure sealing push top, which is characterized in that cover (1) including push top, in the push top set (1) inner cavity from the inside to the outside Equipped with the push top core III in push top core I (2), the push top core II (3) being fixedly connected with push top core I (2), insertion push top core II (3) (4)；Described push top core III (4) lower end is cased with the sealing ring (5) pushed against with push top core II (3), sets at the top of the push top core III (4) There are the circumferential apertures (6) of pilot seal circle (5).

2. a kind of interior high pressure sealing push top according to claim 1, which is characterized in that the sealing ring (5) be equipped with The opposite outer annular recess (51) in circumferential apertures (6) position.

3. a kind of interior high pressure sealing push top according to claim 1, which is characterized in that the push top core II (3) passes through spiral shell Nail (7) is connect with push top core I (2).

4. a kind of interior high pressure sealing push top according to claim 1, which is characterized in that II (3) bottom end of push top core dress There are the O-ring seals I (8) pushed against with push top core I (2).

5. a kind of interior high pressure sealing push top according to claim 1, which is characterized in that on described III (4) side wall of push top core Equipped with the O-ring seals II (9) pushed against with sealing ring (5).