CN209990723U - Miniature high-pressure oil hydraulic cylinder and forming die - Google Patents
Miniature high-pressure oil hydraulic cylinder and forming die Download PDFInfo
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- CN209990723U CN209990723U CN201920917586.6U CN201920917586U CN209990723U CN 209990723 U CN209990723 U CN 209990723U CN 201920917586 U CN201920917586 U CN 201920917586U CN 209990723 U CN209990723 U CN 209990723U
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Abstract
The utility model discloses a micro high-pressure oil hydraulic cylinder and a forming die, which can effectively prevent a piston from falling off, prevent air from damaging a sealing element through compression and combustion and prevent air from damaging the sealing element through iron shavings, and comprises a cylinder body, a piston, a limiting snap spring, a piston sealing element and an iron shavings prevention check ring; a piston cavity with an opening at the top is axially arranged in the cylinder body, an oil hole penetrating through the bottom of the cylinder body is formed in the bottom of the piston cavity, and a clamp spring movable groove is formed in the piston cavity close to the top end of the cylinder body; an installation step for pressing a pressing plate is arranged on the excircle of the top end of the cylinder body; the piston is inserted into the piston cavity in a sliding fit manner, a clamp spring groove is formed in the outer circle of the piston close to the top end of the piston, the limiting clamp spring is installed in the clamp spring groove, a sealing piece groove and a retainer ring groove are formed in the outer circle of the piston close to the bottom end of the piston, and the piston sealing piece and the iron-cutting-prevention retainer ring are installed at the sealing piece groove and the retainer ring groove; the center of the bottom end of the piston is provided with a gas collection chamber.
Description
Technical Field
The utility model belongs to the technical field of the oil hydraulic cylinder technique and specifically relates to a miniature high-pressure oil hydraulic cylinder and forming die are related to.
Background
An oil pressure system (hydraulic system) is an indispensable ring for mechanical automation, and an oil pressure cylinder is a main component of the oil pressure system, and the oil pressure cylinder is a device capable of converting the flow rate of a liquid (such as operating oil) into linear mechanical force or motion, and generally utilizes a movable member to make linear reciprocating motion in the cylinder; the movable parts such as piston, piston ring, piston rod, plunger, etc. can perform pushing or pulling linear motion, and the oil hydraulic cylinder can start and stop in a stroke very accurately.
At present, a radial ring groove is formed on a piston of a miniature high-pressure oil hydraulic cylinder, and then a related piston ring is installed, so that the piston ring of the piston is kept tightly pressed and sealed on the inner wall of the cylinder body to achieve high-pressure sealing capability, and high-pressure oil is prevented from seeping between the piston ring and the inner wall of the cylinder body. However, the piston is easy to fall off under the condition of poor stroke control in the using process, and the sealing element is very easy to damage if the temperature of gas in an oil path is high in the using process, so that hydraulic oil leaks.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a miniature high-pressure oil hydraulic cylinder can prevent effectively that the piston from droing, preventing that the air from damaging the sealing member and iron cutting destroys the sealing member through compression burning.
The utility model adopts the technical proposal that: a miniature high-pressure oil hydraulic cylinder comprises a cylinder body, a piston, a limiting clamp spring, a piston sealing element and an anti-iron-cutting retainer ring; a piston cavity with an opening at the top is axially arranged in the cylinder body, an oil hole penetrating through the bottom of the cylinder body is formed in the bottom of the piston cavity, and a clamp spring movable groove is formed in the piston cavity close to the top end of the cylinder body; an installation step for pressing a pressing plate is arranged on the excircle of the top end of the cylinder body; the bottom of the cylinder body is provided with an end face sealing structure; the piston is inserted into the piston cavity in a sliding fit manner, a clamp spring groove is formed in the outer circle of the piston close to the top end of the piston, the limiting clamp spring is installed in the clamp spring groove, a sealing piece groove and a retainer ring groove are formed in the outer circle of the piston close to the bottom end of the piston, the retainer ring groove is located on the lower side of the sealing piece groove, and the piston sealing piece and the anti-iron-cutting retainer ring are installed at the sealing piece groove and the retainer ring groove; the center of the bottom end of the piston is provided with an air collection chamber which is sunken towards the interior of the piston, and the bottom of the piston is provided with the air collection chamber, so that air in an oil way can be effectively prevented from being compressed and combusted to damage a sealing element in the using process, and further, the oil drainage condition caused by the air is avoided; the clamp spring is arranged to effectively prevent the piston from separating from the cylinder body; it still sets up the retaining ring in sealing washer below, and then prevents that the iron in the oil circuit from cutting and destroying the sealing member.
Furthermore, the center of the top end of the piston is provided with a screw hole which can be used for screwing in a bolt so as to conveniently pull out the piston.
Furthermore, an anti-space feature is arranged on the outer circular wall of the installation step, and the anti-space feature is arranged to avoid interference caused by machining and material retention at the position.
Furthermore, the end face sealing structure is an oil hole sinking groove formed in the bottom of the cylinder body and a bottom sealing element arranged in the oil hole sinking groove, so that the sealing effect of the oil cylinder during installation is improved.
Further, the bottom of cylinder body is provided with the installation screw.
Further, the oil cylinder further comprises a fixing bolt installed at the oil hole of the cylinder body, an oil inlet channel is formed in the fixing bolt, and threads matched with the fixing bolt are formed in the oil hole.
Further, the gas collecting chamber is in a conical structure.
Furthermore, the top end face of the piston is of a downward inclined structure from the center to the outer ring, so that the stress surface for ejecting the inclined piston is reduced, and ejection is more convenient.
Furthermore, a detection feature for detecting the size of the inner hole clamp spring groove is arranged below the excircle installation step at the top end of the cylinder body.
Another aspect of the present invention provides a forming mold, wherein a micro high-pressure oil hydraulic cylinder is arranged in the forming mold as an actuating mechanism; the miniature high-pressure oil hydraulic cylinder is the miniature high-pressure oil hydraulic cylinder in any one of the technical schemes.
Compared with the prior art, the utility model, it has following beneficial effect:
the utility model discloses a miniature high-pressure oil hydraulic cylinder has set up the jump ring, can prevent effectively that the piston from passing through, still is provided with collection chamber, retaining ring simultaneously, has avoided air and iron to cut the infiltration and has damaged the sealing member, has improved sealed effect, and its overall structure design is simple, simple to operate, excellent in use effect.
Drawings
FIG. 1 is a schematic view of the present invention installed in a mold;
fig. 2 is a schematic structural diagram of the present invention;
FIG. 3 is a schematic structural view of the cylinder body of the present invention installed by a pressing plate;
FIG. 4 is a schematic view of the cylinder body of the present invention with screw holes;
fig. 5 is an installation schematic diagram of the middle cylinder body provided with the fixing bolt.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following detailed description of the present invention with reference to the accompanying drawings and embodiments is to be understood that the embodiments described herein are only used for explaining the present invention, and are not used for limiting the present invention.
Referring to fig. 1, fig. 2 and fig. 3, the utility model discloses a miniature high-pressure oil hydraulic cylinder can cooperate mould cutters to use to install in the last mould 101 or the lower mould 102 of the mould device of make-up machine, refer to fig. 1 oil hydraulic cylinder 100 and install in the oil mouth department of lower mould 102 through clamp plate 103, the hydraulic fluid port of cylinder body communicates with each other and seals through the bottom seal spare with the hydraulic fluid port of lower mould, cutter device 104 in the piston top orientation upper mould of oil hydraulic cylinder, refer to fig. 2 the utility model discloses an oil hydraulic cylinder includes that cylinder body 1, piston 2, spacing jump ring 3, piston seal spare 4 and prevent that iron from cutting retaining ring 5.
Specifically, a piston cavity 11 with an open top is axially arranged inside the cylinder body 1 and used for mounting the piston 2, an oil hole 12 penetrating through the bottom of the cylinder body 1 is formed in the bottom of the piston cavity 11 and used for inputting hydraulic oil to eject the piston 2, a clamp spring movable groove 13 is formed in the piston cavity 11 close to the top end of the cylinder body 1, the clamp spring movable groove 13 is of an annular structure, and the clamp spring movable groove has a required stroke for limiting the movement of the clamp spring 3 in the axial direction.
The excircle on this cylinder body 1 top is provided with the installation step 14 that is used for the clamp plate suppression, installs and passes through the clamp plate 103 and fix cylinder body 1 to the lower mould 102 on, be provided with clearance characteristic 15 on the excircle wall of installation step 14 department, set up clearance characteristic 15 and then avoid here processing to leave the material and produce the interference.
An oil hole sinking groove 16 is formed in the bottom of the cylinder body 1, and a bottom sealing element 17 is arranged in the oil hole sinking groove 16 to improve the sealing effect when the oil cylinder is installed.
The piston 2 is inserted into the piston cavity 11 in a sliding fit manner, a clamp spring groove 21 is formed in the outer circle, close to the top end of the piston 2, the limiting clamp spring 3 is installed in the clamp spring groove 21, when the piston 2 moves up and down in the piston cavity 11, the limiting clamp spring 3 moves up and down in the clamp spring moving groove 13, the upper end of the clamp spring moving groove 13 limits the limiting clamp spring 3 and the piston 2, and therefore the piston 2 is prevented from being separated.
The piston 2 has a seal groove 22 and a retainer groove 23 on the outer circumference near the bottom end thereof, wherein the retainer groove 23 is located at the lower side of the seal groove 21, the piston seal 4 and the anti-iron-cutting retainer 5 are installed at the seal groove 22 and the retainer groove 23, and the anti-iron-cutting retainer 4 prevents the iron-cutting in the oil path from damaging the seal.
The center of the bottom end of the piston 2 is provided with an air collection chamber 24 which is sunken towards the inside, the air collection chamber 24 is in a conical structure, and the air collection chamber 24 is arranged at the bottom of the piston 1, so that air in an oil way can be contained in the use process, and the air can be effectively prevented from damaging a sealing piece.
The center of the top end of the piston 2 is provided with a screw hole 25 which can be used for screwing in a bolt so as to pull out the piston 2 conveniently.
The top end face of the piston 2 is of a downward inclined structure from the center to the outer ring, so that the stress surface of the ejection inclination is reduced, and the ejection is more convenient.
When the oil pressure cylinder works, hydraulic oil enters the piston cavity 11 from an oil circuit of the lower die 102 through the oil hole 12 of the cylinder body 1, the hydraulic oil drives the piston 2 to move upwards under the action of the oil conveying device, air is permeated and concentrated in the air collecting chamber 24, and the hydraulic oil blocks iron scraps in the oil through the iron scrap prevention retainer ring 5.
In this embodiment, the piston seal may be formed by combining a tetrafluoro retainer ring and a high-temperature-resistant o-ring.
In this embodiment, the bottom corner position rounding structure in piston chamber to prevent the closed angle destructive power, the corner at piston chamber top also is the rounding structure, can avoid injuring the sealing member when the equipment piston.
In some embodiments, a detection feature for detecting the size of the inner hole clamp spring groove is arranged below the excircle mounting step at the top end of the cylinder body.
In some embodiments, referring to fig. 3, a mounting screw hole 18 may be further provided at the bottom of the cylinder block 1, and the cylinder block 1 may be fixed to the lower mold 102 through the mounting screw hole 18.
In other embodiments, referring to fig. 4, the cylinder block 1 is mounted to the lower die 102 by a fixing bolt 19 having an oil inlet passage, and the oil hole 12 of the cylinder block 1 is provided with a screw thread matching with the fixing bolt 19 and fixed to the lower die 102 by the fixing bolt, and hydraulic oil is injected into the piston chamber 11 through the oil hole 12 from the oil inlet passage of the fixing bolt 19.
In another aspect of the present invention, a micro high-pressure oil hydraulic cylinder is provided as the actuating mechanism in the forming mold; the micro high-pressure oil hydraulic cylinder is the micro high-pressure oil hydraulic cylinder in the above embodiment.
Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by the technical solution of the present invention by those skilled in the art should fall into the protection scope of the present invention, and the technical contents claimed by the present invention have been fully recorded in the claims.
Claims (9)
1. A miniature high-pressure oil hydraulic cylinder is characterized by comprising a cylinder body, a piston, a limiting clamp spring, a piston sealing element and an anti-iron-cutting check ring; a piston cavity with an opening at the top is axially arranged in the cylinder body, an oil hole penetrating through the bottom of the cylinder body is formed in the bottom of the piston cavity, and a clamp spring movable groove is formed in the piston cavity close to the top end of the cylinder body; the bottom of the cylinder body is provided with an end face sealing structure; the piston is inserted into the piston cavity in a sliding fit manner, a clamp spring groove is formed in the excircle of the piston close to the top end of the piston, the limiting clamp spring is installed in the clamp spring groove, a sealing piece groove and a retainer ring groove are formed in the excircle of the piston close to the bottom end of the piston, the retainer ring groove is located on the lower side of the sealing piece groove, and the piston sealing piece and the anti-iron-cutting retainer ring are installed at the sealing piece groove and the retainer ring groove and used for preventing iron chips from entering while sealing; the center of the bottom end of the piston is provided with a gas collection chamber which is sunken towards the interior of the piston.
2. The micro high-pressure oil hydraulic cylinder according to claim 1, characterized in that: the end face sealing structure is an oil hole sinking groove formed in the bottom of the cylinder body, and a bottom sealing element arranged in the oil hole sinking groove.
3. The micro high-pressure oil hydraulic cylinder according to claim 2, characterized in that: the outer circle of the top end of the cylinder body is provided with an installation step for pressing a pressing plate, and the installation step is configured to be installed and fixed in a downward pressing mode through the pressing plate; and the outer circular wall at the mounting step is provided with a clearance feature.
4. The micro high-pressure oil hydraulic cylinder according to claim 2, characterized in that: the bottom of cylinder body is provided with the installation screw, is configured to and installs fixedly through the mode that the bolt is pulled down.
5. The micro high-pressure oil hydraulic cylinder according to claim 2, characterized in that: the oil inlet structure also comprises a fixing bolt arranged at the oil hole of the cylinder body, and the fixing bolt is configured to fix the cylinder body in a pull-down mode and serve as an oil inlet structure;
the fixing bolt is provided with an oil inlet channel, and the oil hole is internally provided with a thread matched with the fixing bolt.
6. The micro high-pressure oil hydraulic cylinder according to any one of claims 1 to 5, characterized in that: the gas collection chamber is of a conical structure;
the top end face of the piston is of a downward inclined structure from the center to the outer ring so as to avoid end face abrasion.
7. The micro high-pressure oil hydraulic cylinder according to claim 6, characterized in that: and a detection characteristic for detecting the size of the inner hole clamp spring groove is arranged below the excircle mounting step at the top end of the cylinder body.
8. The micro high-pressure oil hydraulic cylinder according to claim 1, characterized in that: and a screw hole is formed in the center of the top end of the piston.
9. A kind of forming die, characterized by: a miniature high-pressure oil hydraulic cylinder serving as an action mechanism is arranged in the forming die; the micro high-pressure oil hydraulic cylinder is the micro high-pressure oil hydraulic cylinder in any one of claims 1 to 7; the miniature high-pressure oil hydraulic cylinder is a one-way cylinder and drives the forming die to move through the action mode of the oil inlet spring leg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920917586.6U CN209990723U (en) | 2019-06-18 | 2019-06-18 | Miniature high-pressure oil hydraulic cylinder and forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920917586.6U CN209990723U (en) | 2019-06-18 | 2019-06-18 | Miniature high-pressure oil hydraulic cylinder and forming die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209990723U true CN209990723U (en) | 2020-01-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920917586.6U Active CN209990723U (en) | 2019-06-18 | 2019-06-18 | Miniature high-pressure oil hydraulic cylinder and forming die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209990723U (en) |
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2019
- 2019-06-18 CN CN201920917586.6U patent/CN209990723U/en active Active
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