CN211550366U

CN211550366U - Anti-unbalance-loading nitrogen spring

Info

Publication number: CN211550366U
Application number: CN201922334359.3U
Authority: CN
Inventors: 李小兰
Original assignee: Sichuan Xinyue Precision Technology Co ltd
Current assignee: Sichuan Xinyue Precision Technology Co ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-09-22
Anticipated expiration: 2029-12-23

Abstract

The utility model discloses an anti-unbalance loading nitrogen spring, including cylinder, plunger rod and guide pin bushing, the inside of cylinder is provided with open-top's cavity, the guide pin bushing cartridge is in the opening part of cylinder, plunger rod activity cartridge in the guide pin bushing, the cavity of cylinder the guide pin bushing with the plunger rod encloses to close and forms inclosed air cavity, the air cavity intussuseption is filled with high-pressure nitrogen gas, the top middle part of plunger rod sets up to the plane, for being the inclined plane that a definite angle inclined downwards set up all around, the top middle part of plunger rod the plane is higher than the top all around the inclined plane. The utility model discloses when the mould takes place the unbalance loading in the use, the top contact surface of nitrogen spring's plunger rod can remain throughout at the center contact, and to a great extent prevents the unbalance loading, has promoted nitrogen spring's life.

Description

Anti-unbalance-loading nitrogen spring

Technical Field

The utility model relates to an elastic component field, in particular to prevent unbalance loading nitrogen gas spring.

Background

The nitrogen spring is a novel elastic component taking high-pressure nitrogen as a working medium, has the advantages of small volume, large elasticity, long stroke, stable work, precise manufacture, long service life, gentle elasticity curve, no need of pre-tightening and the like, can be applied to a die, can finish the work which is difficult to finish by conventional elastic components such as metal springs, rubber and air cushions, can effectively simplify the design and manufacture of the die, is convenient for the installation and adjustment of the die, prolongs the service life of the die, and ensures the stability of the product quality.

The top of the plunger rod of the nitrogen spring in the existing market is a plane, if the mould is subjected to unbalance loading in the use process, the contact surface at the top of the plunger rod of the nitrogen spring is not in the center, so that the unbalance loading is caused, and the service life of the nitrogen spring subjected to unbalance loading cannot meet the use requirements of the mould.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem to the defect that exists among the above-mentioned prior art, provide an prevent unbalance loading nitrogen spring to solve the problem that proposes among the above-mentioned background art.

In order to solve the technical problem, the utility model discloses the technical scheme who takes as follows: the utility model provides an anti-unbalance loading nitrogen spring, includes cylinder, plunger rod and guide pin bushing, the inside of cylinder is provided with open-topped cavity, the guide pin bushing cartridge is in the opening part of cylinder, the plunger rod activity cartridge in the guide pin bushing, the cavity of cylinder, the guide pin bushing and the plunger rod encloses and closes and form inclosed air cavity, the air cavity intussuseption is filled with high-pressure nitrogen gas, the top middle part of plunger rod sets up to the plane, is all around for being the inclined plane that certain angle slant set up downwards, the top middle part of plunger rod the plane is higher than top inclined plane all around.

As a further elaboration of the above technical solution:

in the technical scheme, the inclined plane at the periphery of the top end of the plunger rod inclines downwards at an angle of 3-6 degrees.

In the above technical solution, the angle of the inclined plane inclined downward at the periphery of the top end of the plunger rod is set to be 4 degrees.

In the technical scheme, an inner dustproof part, a guide element and a main sealing part are sequentially arranged between the inner side surface of the guide sleeve and the outer side surface of the plunger rod from top to bottom.

In the technical scheme, an outer dustproof ring, a clamp spring, a zero-shaped sealing ring and a check ring are sequentially arranged between the outer side face of the guide sleeve and the inner side face of the cylinder barrel from top to bottom.

In the technical scheme, the bottom of the cylinder barrel is provided with a side hole, and a sealing plug is arranged in the side hole.

In the technical scheme, the bottom of the inner part of the cylinder barrel is provided with the vent hole, and the vent hole is communicated with the side hole.

Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model provides a top middle part of plunger rod sets up to the plane, for being the inclined plane that an angle inclined downwards set up all around, the plane at the top middle part of plunger rod is higher than top inclined plane all around, when the mould takes place the unbalance loading in the use, and the top contact surface of the plunger rod of nitrogen spring can remain throughout at the central contact, and to a great extent prevents the unbalance loading, has promoted nitrogen spring's life.

Drawings

Fig. 1 is a cross-sectional view of the present invention.

In the figure: 1. a cylinder barrel; 2. a plunger rod; 21. a plane; 22. a bevel; 3. a guide sleeve; 4. an air cavity; 5. internal dust prevention; 6. a guide member; 7. a primary seal; 8. dust prevention is carried out; 9. a clamp spring; 10. a zero-type seal ring; 11. a side hole; 12. plugging by screwing; 13. a vent hole; 14. and a retainer ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

As shown in fig. 1, the anti-unbalance-loading nitrogen spring comprises a cylinder barrel 1, a plunger rod 2 and a guide sleeve 3, wherein a cavity with an open top is arranged inside the cylinder barrel 1, the guide sleeve 3 is inserted into an opening of the cylinder barrel 1, the plunger rod 2 is movably inserted into the guide sleeve 3, the cavity of the cylinder barrel 1, the guide sleeve 3 and the plunger rod 2 are enclosed to form a closed air cavity 4, high-pressure nitrogen is filled in the air cavity 4, the middle of the top end of the plunger rod 2 is provided with a plane 21, the periphery of the top end of the plunger rod 2 is provided with an inclined plane 22 which is obliquely arranged downwards at a certain angle, and the plane 21 in the middle of the top end of the plunger rod 2 is higher than. When the mould takes place the unbalance loading in the use, the top contact surface of the plunger rod 2 of nitrogen spring can keep in the center contact all the time, and to a great extent prevents the unbalance loading, has promoted nitrogen spring's life.

In this embodiment, the inclined surface 22 around the top end of the plunger rod 2 is inclined obliquely downward at an angle of 3 to 6 degrees. Preferably, the inclined surface 22 around the top end of the plunger rod 2 is inclined obliquely downward at an angle of 4 degrees. Of course, the angle of the inclined surface 22 inclined downward may also be set to 5 degrees, and a user may set the angle according to actual requirements, which is not limited in this embodiment.

An inner dustproof part 5, a guide element 6 and a main sealing part 7 are sequentially arranged between the inner side surface of the guide sleeve 3 and the outer side surface of the plunger rod 2 from top to bottom, the space between the guide sleeve 3 and the plunger rod 2 is sealed, and air leakage inside the air cavity 4 is avoided.

An outer dustproof 8, a clamp spring 9, a zero-shaped sealing ring 10 and a check ring 14 are sequentially arranged between the outer side face of the guide sleeve 3 and the inner side face of the cylinder barrel 1 from top to bottom, the space between the guide sleeve 3 and the cylinder barrel 1 is sealed, and air leakage inside the air cavity 4 is avoided.

Preferably, the bottom of the cylinder barrel 1 is provided with a side hole 11, and a sealing plug 12 is arranged in the side hole 11. The bottom of the inside of the cylinder barrel 1 is provided with a vent hole 13, and the vent hole 13 is communicated with the side hole 11.

In this embodiment, the inside of the cylinder barrel 1 contains a small amount of lubricating oil, so that the friction force of the plunger rod 2 moving up and down in the cylinder barrel 1 is reduced, and the service life of the nitrogen spring is ensured.

The utility model provides a top middle part of plunger rod 2 sets up to plane 21, for being the inclined plane 22 that a definite angle inclined downwards set up all around, plane 21 at the top middle part of plunger rod 2 is higher than top inclined plane 22 all around, and when the mould took place the unbalance loading in the use, the top contact surface of plunger rod 2 of nitrogen spring can remain throughout at the central contact, and to a great extent prevents the unbalance loading, has promoted nitrogen spring's life.

The above is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are all within the scope of the technical solution of the present invention.

Claims

1. The utility model provides an anti-unbalance loading nitrogen gas spring which characterized in that: the plunger rod comprises a cylinder barrel, a plunger rod and a guide sleeve, wherein a cavity with an opening at the top is arranged inside the cylinder barrel, the guide sleeve is inserted into the opening of the cylinder barrel, the plunger rod is movably inserted into the guide sleeve, the cavity of the cylinder barrel, the guide sleeve and the plunger rod are enclosed to form an airtight air cavity, high-pressure nitrogen is filled in the air cavity, the middle of the top end of the plunger rod is arranged to be a plane, an inclined plane which is obliquely and downwards arranged at a certain angle is arranged on the periphery of the top end of the plunger rod, the plane in the middle of the top end of the plunger rod is higher than the inclined plane on the periphery of the top end of the plunger rod, and.

2. The nitrogen spring as claimed in claim 1, wherein the slope around the top end of the plunger rod is inclined at an angle of 4 degrees.

3. The nitrogen spring as claimed in claim 1, wherein an inner dust-proof, a guiding element and a main sealing member are sequentially arranged between the inner side of the guide sleeve and the outer side of the plunger rod from top to bottom.

4. The anti-bias-load nitrogen spring as claimed in claim 1, wherein an outer dust-proof ring, a snap spring, a zero-shaped sealing ring and a retainer ring are sequentially arranged between the outer side surface of the guide sleeve and the inner side surface of the cylinder barrel from top to bottom.

5. The anti-bias-load nitrogen spring as claimed in claim 1, wherein a side hole is formed in the bottom of the cylinder barrel, and a sealing plug is arranged in the side hole.

6. The anti-bias-load nitrogen spring as claimed in claim 5, wherein a vent hole is formed in the bottom of the inner portion of the cylinder barrel, and the vent hole is communicated with the side hole.