CN210769975U

CN210769975U - Slow return nitrogen spring

Info

Publication number: CN210769975U
Application number: CN201921344561.8U
Authority: CN
Inventors: 李小兰
Original assignee: Sichuan Xinyue Precision Technology Co ltd
Current assignee: Sichuan Xinyue Precision Technology Co ltd
Priority date: 2019-08-19
Filing date: 2019-08-19
Publication date: 2020-06-16
Anticipated expiration: 2029-08-19

Abstract

The utility model provides a slow return nitrogen spring, including cylinder and plunger rod, the one end and the inside bottom that is equipped with of cylinder, be fixed with jump ring two between the lateral surface of bottom and the cylinder medial surface, be equipped with internally mounted have the through-hole and the inside intercommunication of cylinder of plug with the spiral shell in the bottom, the last L type through-hole and the L type through-hole that are equipped with in the bottom equally be close to cylinder inner chamber tip and be equipped with oil plug, the one end that oil plug was kept away from to L type through-hole is equipped with plug with two, the one end of plunger rod is fixed with piston and piston setting in the inside of cylinder, the tip and the inboard that the bottom was kept away from to the cylinder are equipped with the guide pin bushing, the plunger. The utility model provides a pair of slow return nitrogen spring can reduce mould, press and nitrogen spring and unnecessary loss appears, compares and uses traditional nitrogen spring, and slow return nitrogen spring possesses energy-conserving 70% -80% additional advantage.

Description

Slow return nitrogen spring

Technical Field

The utility model relates to a nitrogen spring, in particular to slow return stroke nitrogen spring.

Background

The nitrogen spring assembly product is a novel elastic functional component, is an upgrading and updating product of a conventional spiral spring, and is also a substitute product with high technological content and localization. The nitrogen spring is a component having an elastic function. It seals high-pressure nitrogen in a certain container, and when the external force is removed, the high-pressure nitrogen is expanded to obtain a certain elastic pressure, and said component is called nitrogen cylinder or gas spring.

The mould that uses on the existing market deposits nitrogen spring and is ordinary nitrogen spring, can't accomplish slow return stroke or the return stroke effect is not good, can influence the use of mould and press.

SUMMERY OF THE UTILITY MODEL

Not enough to the above-mentioned among the prior art, the utility model provides a slow return stroke nitrogen gas spring, its compact structure, convenient operation practices thrift the energy consumption, convenient popularization.

In order to achieve the above object, the utility model adopts the following technical scheme:

a slow return nitrogen spring comprises a cylinder barrel and a plunger rod, wherein a bottom cover is arranged at one end of the cylinder barrel and inside the cylinder barrel, a clamp spring II is fixed between the outer side surface of the bottom cover and the inner side surface of the cylinder barrel, a through hole internally provided with a plug I is formed in the bottom cover and communicated with the inside of the cylinder barrel, an L-shaped through hole communicated with the inside of the cylinder barrel is also formed in the bottom cover, an oil plug is arranged at the end part, close to the inner cavity of the cylinder barrel, of the L-shaped through hole, a plug II is arranged at the end, far away from the oil plug, of the L-shaped through hole, a piston is fixed at one end of the plunger rod and arranged inside the cylinder barrel, a guide sleeve is arranged at the end part, far away from the bottom cover, of the cylinder barrel and the inner side of the cylinder barrel, the plunger rod penetrates through the guide sleeve, a through hole communicated with the inner, the outer side face of the one-way valve is fixed in the trapezoidal through hole in a threaded expansion mode, a clamp spring I and a dust ring I are arranged between the guide sleeve and the cylinder barrel, a dust ring II and a guide ring I are arranged between the plunger rod and the guide sleeve, and a two-way sealing ring and a guide ring II are sleeved on the outer side of the piston.

The utility model has the advantages that:

the utility model discloses compact structure, convenient to use, oil stifled can prevent that lubricating oil from flowing into valve inside department, and plug screw can be when inside atmospheric pressure exceeds the standard value, and plug screw can carry out the pressure release, and the pressure of placing exceeds the standard value, and the check valve is fixed in the hole with screw thread inflation, and when the plunger rod moves down, this check valve is opened and is made gas pass through fast, enters into nitrogen spring upper plenum; when the plunger rod of the nitrogen spring ascends, nitrogen in the ascending air chamber slowly flows back to the lower air chamber through the threads at the expansion position of the one-way valve, the purpose of slow return is achieved, unnecessary loss of a die, a press and the nitrogen spring can be reduced, and compared with the traditional nitrogen spring, the slow return nitrogen spring has the additional advantage of saving energy by 70% -80%.

As an improvement, O-shaped rings are arranged between the guide sleeve and the cylinder barrel, between the bottom cover and the cylinder barrel, between the first plug and the bottom cover and between the third plug and the guide sleeve and used for sealing all the parts.

As an improvement, valve cores are arranged in the L-shaped through holes and the through holes and used for air inlet and outlet.

As an improvement, a Y-shaped sealing ring and a guide retaining ring are arranged between the guide sleeve and the plunger rod and are fixed with the guide sleeve, so that the sealing strength is improved.

As an improvement, the Y-shaped sealing ring and the end part of the guide retainer ring are arranged in a propping mode, and the Y-shaped sealing ring is limited.

As an improvement, an annular clearance groove is formed in the inner side face of the cylinder barrel and close to the bottom cover end, and pressure is actively relieved under special conditions.

As an improvement, one end of the plunger rod, which is far away from the piston, is provided with a chamfer angle for processing, so that the eccentric load is prevented.

Drawings

Fig. 1 is a schematic structural view of the present invention;

reference symbol comparison table:

1-cylinder barrel, 2-plunger rod, 3-bottom cover, 4-circlip two, 5-plug one, 6-L type through hole, 7-oil plug, 8-plug two, 9-piston, 10-guide sleeve, 11-through hole, 12-plug three, 13-one-way valve, 14-hollow hexagon socket head plug, 15-circlip one, 16-dust-proof ring one, 17-dust-proof ring two, 18-guide ring one, 19-bidirectional seal ring, 20-guide ring two, 21-valve inside, 22-Y type seal ring, 23-guide retainer ring and 24-annular clearance groove.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

In order to make the content of the present invention more clearly understood, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the attached drawings in the embodiment of the present invention.

As shown in figure 1, the slow return nitrogen spring comprises a cylinder barrel 1 and a plunger rod 2, a bottom cover 3 is arranged at one end of the cylinder barrel 1 and inside the cylinder barrel 1, a clamp spring II 4 is fixed between the outer side surface of the bottom cover 3 and the inner side surface of the cylinder barrel 1, a through hole internally provided with a plug I5 is arranged on the bottom cover 3 and communicated with the inside of the cylinder barrel 1, an L-shaped through hole 6 communicated with the inside of the cylinder barrel 1 is also arranged on the bottom cover 3, an oil plug 7 is arranged at the end part, close to the inner cavity of the cylinder barrel 1, of the L-shaped through hole 6, a plug II 8 is arranged at the end, far away from the oil plug 7, of the L-shaped through hole 6, a piston 9 is fixed at one end of the plunger rod 2, the piston 9 is arranged inside the cylinder barrel 1, a guide sleeve 10 is arranged at the end part, far away from the bottom cover 3, of the plunger rod 2 passes through the, the piston 9 is provided with a trapezoidal through hole, a one-way valve 13 and a hollow inner hexagonal plug 14 which is arranged in a manner of abutting against one end of the one-way valve 13 are arranged in the trapezoidal through hole, the outer side surface of the one-way valve 13 is fixed in the trapezoidal through hole in a threaded expansion manner, a clamp spring I15 and a dust ring I16 are arranged between the guide sleeve 10 and the cylinder barrel 1, a dust ring II 17 and a guide ring I18 are arranged between the plunger rod 2 and the guide sleeve 10, and a bidirectional seal ring 19 and a guide ring II 20 are sleeved on the outer side of the piston 9.

And O-shaped rings are arranged between the guide sleeve 10 and the cylinder barrel 1, between the bottom cover 3 and the cylinder barrel 1, between the first plug 5 and the bottom cover 3 and between the third plug 12 and the guide sleeve 10.

And valve cores 21 are arranged in the L-shaped through holes 6 and the through holes 11.

A Y-shaped sealing ring 22 and a guide retaining ring 23 are arranged between the guide sleeve 10 and the plunger rod 2, and the Y-shaped sealing ring 22 and the guide retaining ring are both fixed with the guide sleeve 10.

The Y-shaped sealing ring 22 and the end part of the guide retainer ring 23 are arranged in a contact way.

And an annular clearance groove 24 is formed in the inner side surface of the cylinder barrel 1 and at the end close to the bottom cover 3.

And one end of the plunger rod 2 far away from the piston 9 is provided with chamfering treatment.

In the using process of the device, a mold is fixed with the extending end of the plunger rod 2, the plunger rod 2 is driven to move downwards when the mold is pressed downwards, nitrogen in a lower air chamber (a cavity below the piston 9) enters an upper air chamber (a cavity above the piston 9) through a special one-way valve 13, when the mold returns upwards, the nitrogen in the upper air chamber slowly enters the lower air chamber through threads (communicated with the cavity below the piston 9) on the outer side of the special one-way valve 13, and the time of the complete return of the plunger rod 2 needs 1-2 minutes.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and all modifications, equivalents, improvements and the like that are made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A slow return nitrogen spring comprises a cylinder barrel (1) and a plunger rod (2), and is characterized in that a bottom cover (3) is arranged at one end and inside of the cylinder barrel (1), a clamp spring II (4) is fixed between the outer side face of the bottom cover (3) and the inner side face of the cylinder barrel (1), a through hole internally provided with a plug I (5) is formed in the bottom cover (3) and communicated with the inside of the cylinder barrel (1), an L-shaped through hole (6) communicated with the inside of the cylinder barrel (1) is also formed in the bottom cover (3), an oil plug (7) is arranged at the end part, close to the inner cavity of the cylinder barrel (1), of the L-shaped through hole (6), a plug II (8) is arranged at one end far away from the oil plug (7), a piston (9) is fixed at one end of the plunger rod (2) and arranged inside the cylinder barrel (1), a guide sleeve (10) is arranged at the end part and the inner side, far away from the, the plunger rod (2) penetrates through the guide sleeve (10) to be arranged, a through hole (11) communicated with the inner cavity of the cylinder barrel (1) is formed in the guide sleeve (10), a plug III (12) is arranged at one end, far away from the inner cavity of the cylinder barrel (1), of the through hole (11), a trapezoidal through hole is formed in the piston (9), a check valve (13) and a hollow inner hexagonal plug (14) which is arranged in a mode of being abutted to one end of the check valve (13) are arranged in the trapezoidal through hole, the outer side face of the check valve (13) is fixed in the trapezoidal through hole in a thread expansion mode, a clamp spring I (15) and a dust ring I (16) are arranged between the guide sleeve (10) and the cylinder barrel (1), a dust ring II (17) and a guide ring I (18) are arranged between the plunger rod (2) and the guide sleeve (10), and a bidirectional sealing ring (19) and a guide ring.

2. The slow return nitrogen spring of claim 1, wherein: o-shaped rings are arranged between the guide sleeve (10) and the cylinder barrel (1), between the bottom cover (3) and the cylinder barrel (1), between the plug I (5) and the bottom cover (3) and between the plug III (12) and the guide sleeve (10).

3. The slow return nitrogen spring of claim 1, wherein: and valve cores (21) are arranged in the L-shaped through holes (6) and the through holes (11).

4. A slow return nitrogen spring as claimed in claim 2, wherein: and a Y-shaped sealing ring (22) and a guide retaining ring (23) are arranged between the guide sleeve (10) and the plunger rod (2), and the Y-shaped sealing ring (22) and the guide retaining ring are both fixed with the guide sleeve (10).

5. The slow return nitrogen spring of claim 4, wherein: the Y-shaped sealing ring (22) and the end part of the guide retainer ring (23) are arranged in a butting way.

6. The slow return nitrogen spring of claim 4, wherein: and an annular clearance groove (24) is formed in the inner side surface of the cylinder barrel (1) and is close to the end of the bottom cover (3).

7. The slow return nitrogen spring of claim 4, wherein: and one end of the plunger rod (2) far away from the piston (9) is provided with a chamfer angle.