CN214036645U - Return stroke controllable nitrogen spring with low rebound quantity - Google Patents
Return stroke controllable nitrogen spring with low rebound quantity Download PDFInfo
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- CN214036645U CN214036645U CN202023274161.XU CN202023274161U CN214036645U CN 214036645 U CN214036645 U CN 214036645U CN 202023274161 U CN202023274161 U CN 202023274161U CN 214036645 U CN214036645 U CN 214036645U
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Abstract
The utility model discloses a controllable type nitrogen spring of return stroke of low resilience volume belongs to elastic element product technical field, and it includes working cylinder, piston rod, gas circuit, its characterized in that, the inside cavity of working cylinder divide into three inflatable chambers of 1# cavity, 2# cavity, 3# cavity, wherein 1# cavity is the cavity that has the pole, and its 2# cavity is the cavity that does not have the pole, and 1# cavity and 2# cavity are separated through the piston, and the volume of 1# cavity and 2# cavity changes along with the spring compression stroke change; the 3# chamber is a fixed chamber, the 3# chamber can be designed into different sizes, and the larger the volume is, the better the effect of eliminating the rebound quantity is; the 1# chamber, the 2# chamber and the 3# chamber are communicated through air passages, and a control valve for controlling the flow direction of nitrogen is arranged on the air passages to control the connection and disconnection of the air passages; the piston and the piston rod are connected into a whole and do linear reciprocating motion along with the compression or ejection stroke of the spring in the working cylinder.
Description
Technical Field
The invention relates to the technical field of elastic element products, in particular to a return stroke controllable nitrogen spring with low resilience.
Background
The nitrogen spring is a novel elastic element taking high-pressure nitrogen as a working medium, and has the excellent performances of small volume, gentle elasticity-stroke curve, long working stroke, no need of pre-tightening, flexible installation mode and the like, so that the nitrogen spring gradually replaces conventional elastic elements such as metal springs, elastic rubber, air cushions and the like in many fields, and particularly in the field of die industry, the replacement is more thorough and obvious.
In recent years, as molds have been rapidly developed in the direction of precision, high efficiency, long life, and the like, more and more new requirements have been made on the performance of nitrogen springs. For example: the nitrogen spring is required to be kept in a compressed state according to the time specified by the stamping process during die opening, namely: a "return controllable" lock-up state; in addition, the nitrogen spring with controllable return stroke can be popularized and applied in a plurality of fields such as mechanical manufacturing, automobiles, electronic appliances and the like. The common nitrogen spring can not meet the requirements due to uncontrollable return stroke, but the return stroke controllable nitrogen spring in the prior art generally has larger rebound quantity, or a built rebound removing system is more complex, so that the running reliability is reduced, the price is high, and the popularization and the use are influenced.
In order to meet the market demand, it is imperative to develop a novel return stroke controllable nitrogen spring which can overcome the defects and has stable and reliable work.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above problem, a controllable type nitrogen spring of return stroke of low resilience volume is provided, the utility model discloses a technical scheme be:
a return stroke controllable nitrogen spring with low rebound quantity comprises a working cylinder, a piston rod and a gas circuit, and is characterized in that an inner cavity of the working cylinder is divided into three inflation cavities, namely a cavity 1#, a cavity 2# and a cavity 3#, wherein the cavity 1# is a cavity with a rod, the cavity 2# is a cavity without a rod, the cavity 1# and the cavity 2# are separated by the piston, and the volumes of the cavity 1# and the cavity 2# change along with the change of a compression stroke of the spring; the 1# chamber, the 2# chamber and the 3# chamber are communicated through air passages, and a control valve for controlling the flow direction of nitrogen is arranged on the air passages to control the connection and disconnection of the air passages; the piston and the piston rod are connected into a whole and do linear reciprocating motion along with the compression or ejection stroke of the spring in the working cylinder.
Further, the 3# chamber is a fixed chamber, the 3# chamber can be designed into different sizes of volumes, and the larger the volume of the 3# chamber is, the better the effect of eliminating the rebound quantity is.
Furthermore, two branch gas circuits are arranged between the No. 1 cavity and the No. 2 cavity, wherein the first branch gas circuit is a one-way gas circuit which enables gas in the No. 2 cavity to flow into the No. 1 cavity through a one-way valve; the second branch gas circuit is a throttling control gas circuit which enables gas between the 1# chamber and the 2# chamber to flow slowly or stop through a first control valve, and the throttling gas circuit can prevent the high-pressure nitrogen in the chamber from releasing energy at an excessively high speed.
Furthermore, a control air path which enables air between the two chambers to be communicated or stopped through a control valve II is arranged between the 2# chamber and the 3# chamber.
Furthermore, an inflation/deflation gas path which enables the outside to be communicated with or disconnected from the internal gas path through an inflation/deflation valve is arranged between the 2# chamber and the 3# chamber, one end of the inflation/deflation valve is connected in the gas path, and the other end of the inflation/deflation valve is used as an interface for inflating or deflating the nitrogen spring, so that the spring can be conveniently inflated or deflated.
The utility model has the advantages that:
1. the 3# chamber is added to control the return stroke controllable nitrogen spring of the rebound amount, a complex rebound eliminating system is not required to be formed, the structure is simple, and the field installation is convenient;
2. the utility model discloses at the bottom of the controllable type nitrogen spring's of return stroke resilience volume, need not to found complicated resilience system that removes, avoid increasing holistic cost, also further guaranteed the reliability of operation.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
FIG. 1 is a schematic view of a spring in a natural state after the return stroke controllable nitrogen spring is filled in an embodiment;
FIG. 2 is a schematic diagram illustrating an initial compression state of a spring and a state before removing an external force when the spring is compressed to a bottom dead center according to an embodiment of the return stroke controllable nitrogen spring;
FIG. 3 is a schematic view of a locking state of the embodiment of the return stroke controllable nitrogen spring;
FIG. 4 is a schematic view of a return stroke starting state of the embodiment of the return stroke controllable nitrogen spring;
FIG. 5 is a schematic view of an intermediate state of the return stroke of the embodiment of the return stroke controllable nitrogen spring;
fig. 6 is a schematic view illustrating a state of a return stroke to a top dead center of the embodiment of the return stroke controllable nitrogen spring.
The text labels in the figures are represented as: 1. a working cylinder; 11. 1# chamber; 12. 2# chamber; 13. 3# chamber; 2. a piston; 3. a piston rod; 4. a gas circuit; 41. a one-way valve; 42. a throttling air passage; 43. a first control valve; 44. a second control valve; 45. a gas charging and discharging valve; 5. and (7) briquetting.
Detailed Description
In order to make the technical solution of the present invention better understood, the present invention is described in detail below with reference to the accompanying drawings, and the description of the present invention is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention.
Please refer to fig. 1, which is a schematic structural diagram of a preferred embodiment of a return stroke controllable nitrogen spring with low spring back amount according to the present invention.
A return stroke controllable nitrogen spring with low rebound quantity comprises a working cylinder 1, a piston 2, a piston rod 3 and an air passage 4, and is characterized in that an inner cavity of the working cylinder 1 is divided into three inflation cavities, namely a cavity 1# 11, a cavity 2# 12 and a cavity 3# 13, wherein the cavity 1# 11 is a cavity with a rod, the cavity 2# 12 is a cavity without a rod, the cavity 1# 11 and the cavity 2# 12 are separated by the piston 2, and the volumes of the cavity 1# 11 and the cavity 2# are changed along with the change of a compression stroke of the spring; the 1# chamber 11, the 2# chamber 12 and the 3# chamber 13 are communicated through a gas path 4, and the gas path 4 is provided with a control valve for controlling the flow direction of nitrogen to control the connection and disconnection of the gas path 4; the piston 2 and the piston rod 3 are connected into a whole and do linear reciprocating motion along with the compression or ejection stroke of the spring in the working cylinder 1.
Preferably, referring to fig. 1-6, the # 3 chamber 13 is a fixed chamber, and the # 3 chamber 13 can be designed to have different volumes, and the larger the volume is, the better the effect of eliminating the rebound amount is.
Preferably, as shown in fig. 1 to 6, two branch gas paths are disposed between the # 1 chamber 11 and the # 2 chamber 12, wherein a first branch gas path is a one-way gas path for allowing the gas in the # 2 chamber 12 to flow into the # 1 chamber through a one-way valve 41; the second branch gas circuit is a throttling control gas circuit which enables gas between the 1# chamber 11 and the 2# chamber 12 to flow slowly or stop through a first control valve 43, and the throttling gas circuit can prevent the high-pressure nitrogen in the chamber from releasing energy at an excessively high speed.
Preferably, as shown in fig. 1 to 6, a control air path for communicating or stopping air between the # 2 chamber 12 and the # 3 chamber 13 through a second control valve 44 is disposed between the two chambers.
Preferably, as shown in fig. 1 to 6, an inflation/deflation gas path for connecting or disconnecting the outside with the internal gas path through an inflation/deflation valve 45 is disposed between the 2# chamber 12 and the 3# chamber 13, one end of the inflation/deflation valve 45 is connected to the gas path, and the other end thereof is used as a port for inflating or deflating the nitrogen spring, so as to conveniently inflate or deflate the spring.
When the utility model is used, the piston rod 3 is pressed into the working cylinder under the action of external force, so that the spring is compressed to store energy; when the piston is compressed to the stroke bottom dead center, the energy storage of the spring reaches the maximum value, the piston rod 3 is locked, and the compression state is still kept when the external force is removed; after obtaining the return command, the piston rod slowly returns to release energy.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present invention have been explained herein using specific examples, which are presented only to assist in understanding the methods and their core concepts. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes can be made without departing from the principle of the present invention, and the above technical features can be combined in a proper manner; these modifications, variations or combinations, or direct applications of the concepts and solutions of the present invention to other applications without further modifications, are intended to be included within the scope of the present invention.
Claims (5)
1. A return stroke controllable nitrogen spring with low rebound quantity comprises a working cylinder (1), a piston (2), a piston rod (3) and an air passage (4), and is characterized in that an inner cavity of the working cylinder (1) is divided into three inflation cavities, namely a 1# cavity (11), a 2# cavity (12) and a 3# cavity (13), wherein the 1# cavity (11) is a cavity with a rod, the 2# cavity (12) is a cavity without a rod, the 1# cavity (11) and the 2# cavity (12) are separated by the piston (2), and the volumes of the 1# cavity (11) and the 2# cavity (12) are changed along with the change of a compression stroke of the spring; the No. 1 chamber (11), the No. 2 chamber (12) and the No. 3 chamber (13) are communicated through a gas path (4), and a control valve for controlling the flow direction of nitrogen is arranged on the gas path (4) to control the connection and disconnection of the gas path (4); the piston (2) and the piston rod (3) are connected into a whole and do linear reciprocating motion along with the compression or ejection stroke of the spring in the working cylinder (1).
2. The nitrogen spring with low rebound quantity and controllable return stroke as claimed in claim 1, wherein the 3# chamber (13) is a fixed chamber, and the 3# chamber (13) can be designed to have different volumes, and the larger the volume is, the better the rebound quantity is eliminated.
3. The return stroke controllable nitrogen spring with the low rebound quantity according to claim 1, wherein two branch gas paths are arranged between the No. 1 chamber (11) and the No. 2 chamber (12), wherein the first branch gas path is a one-way gas path which enables gas in the No. 2 chamber (12) to flow into the No. 1 chamber through a one-way valve (41); the second branch gas circuit is a throttling control gas circuit which enables gas between the 1# chamber (11) and the 2# chamber (12) to flow slowly or stop through a control valve I (43), and the throttling gas circuit can prevent the high-pressure nitrogen in the chamber from releasing energy at an excessively high speed.
4. The nitrogen spring with the low rebound quantity and the controllable return stroke as claimed in claim 1, wherein a control gas path for enabling or stopping gas communication between the No. 2 chamber (12) and the No. 3 chamber (13) through a second control valve (44) is arranged between the two chambers.
5. The return stroke controllable nitrogen spring with low rebound quantity according to claim 1, wherein an inflation/deflation gas path for connecting or disconnecting the outside with the internal gas path through an inflation/deflation valve (45) is arranged between the 2# chamber (12) and the 3# chamber (13), one end of the inflation/deflation valve (45) is connected in the gas path, and the other end of the inflation/deflation valve is used as an interface for inflating or deflating the nitrogen spring, so that the spring can be conveniently inflated or deflated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202023274161.XU CN214036645U (en) | 2020-12-30 | 2020-12-30 | Return stroke controllable nitrogen spring with low rebound quantity |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023274161.XU CN214036645U (en) | 2020-12-30 | 2020-12-30 | Return stroke controllable nitrogen spring with low rebound quantity |
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| CN214036645U true CN214036645U (en) | 2021-08-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576672A (en) * | 2020-12-30 | 2021-03-30 | 邵阳兴达精密机械制造有限公司 | Low-resilience return stroke controllable nitrogen spring and operation method |
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2020
- 2020-12-30 CN CN202023274161.XU patent/CN214036645U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576672A (en) * | 2020-12-30 | 2021-03-30 | 邵阳兴达精密机械制造有限公司 | Low-resilience return stroke controllable nitrogen spring and operation method |
| CN112576672B (en) * | 2020-12-30 | 2024-04-30 | 邵阳兴达精密机械制造有限公司 | Low-resilience-quantity return-stroke controllable nitrogen spring and operation method |
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