CN210318302U - Nitrogen spring's plunger rod anti loosening structure - Google Patents
Nitrogen spring's plunger rod anti loosening structure Download PDFInfo
- Publication number
- CN210318302U CN210318302U CN201921314844.8U CN201921314844U CN210318302U CN 210318302 U CN210318302 U CN 210318302U CN 201921314844 U CN201921314844 U CN 201921314844U CN 210318302 U CN210318302 U CN 210318302U
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- China
- Prior art keywords
- piston
- plunger rod
- joint
- rotation stopping
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 22
- 150000002829 nitrogen Chemical class 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 21
- 238000000465 moulding Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 7
- 210000004907 gland Anatomy 0.000 description 6
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Fluid-Damping Devices (AREA)
- Compressor (AREA)
Abstract
The utility model relates to the technical field of nitrogen spring structures, in particular to a plunger rod anti-loosening structure of a nitrogen spring, wherein one end surface of a piston is provided with a piston threaded hole; the plunger rod is provided with a column external thread matched with the piston threaded hole; the piston threaded hole is in threaded connection with the column external thread; the other end face of the piston is provided with a joint mounting hole; a rotation stopping joint with a tubular structure is arranged in the joint mounting hole; one end of the rotation stopping joint is fixed on the plunger rod; the other end of the rotation stopping joint is fixed on the piston. When the utility model is used, the rotation stopping joint can connect the central sealing rod and the plunger piston hole; the rotation stopping joint is fixed on the piston, the plunger rod cannot rotate, the plunger rod is prevented from rotating and loosening on the piston, the total length of the nitrogen spring is ensured, and the temperature of the mold is higher than the molding quality.
Description
Technical Field
The utility model relates to a nitrogen gas spring technical field, in particular to nitrogen gas spring's plunger rod anti loosening structure.
Background
The nitrogen spring special for mould (called die nitrogen spring or nitrogen cylinder for short) is a new type elastic component using high-pressure nitrogen as working medium, and its volume is small, elasticity is large, stroke is long, working is stable, its manufacture is accurate, service life is long (one million times), elastic curve is smooth, and it has no need of pre-tightening, etc..
One end of a cylinder barrel 3 in the existing nitrogen spring is sealed, and the other end of the cylinder barrel 3 is an opening end; the end surface of the opening is fixed with a gland 2 which is detachably connected; sealing rings are arranged between the inner side walls of the gland 2 and the cylinder barrel 3 and between the gland and the plunger rod 1; the inner cavity of the cylinder barrel 3 is provided with a piston 4 which can slide in the cylinder barrel 3; the piston 4 is provided with a one-way valve which penetrates through two end faces of the piston 4; a central sealing rod 5 is fixed on the inner bottom wall of the sealing end face of the cylinder barrel 3; the central sealing rod 5 is inserted into the central hole of the piston 4, and the central hole of the piston 4 and the outer side wall of the central sealing rod 5 are sealed through a Stent ring; one end of the plunger rod 1 extending into the cylinder 3 is fixed with the piston 4; the plunger rod 1 is internally provided with a plunger hole 101; the plunger hole 101 is communicated with the top end of the central sealing rod 5, the side wall of the plunger rod 1 is provided with a plurality of air inlet holes 102 communicated with the plunger hole 101, and a gap is formed between the outer side wall of the central sealing rod 5 and the plunger hole 101; a stop valve 6 is arranged between the tail end of the central sealing rod 5 and the inner cavity of the cylinder barrel 3 and is used for controlling the on-off of the air path between the central sealing rod 5 and the inner cavity of the cylinder barrel 3; the central sealing rod 5 and the piston 4 are sealed by a St ring; the piston 4 and the cylinder 3 are sealed by a Gray ring; in the closed state of the stop valve 6, the plunger rod 1 moves downward after the lower die is pressed, so that the piston 4 moves downward and compresses the gas below the piston 4; the gas below enters between the piston 4 and the gland 2 through the one-way valve, an upper gas storage chamber is formed between the piston 4 and the gland 2, and when the die punches a workpiece, the time-delay type nitrogen spring keeps static; after the stop valve 6 is opened, the gas in the upper gas storage chamber sequentially passes through the gas inlet 102, the central sealing rod 5 and the valve body to reenter the gas storage chamber below the piston 4, at the moment, the plunger rod 1 is pressed to move upwards by the thrust of the retracting piston 4, and meanwhile, the workpiece is driven to move upwards, so that the time delay work can be completed.
However, since the plunger rod 1 and the piston 4 are generally fixed only by threaded connection and lack of a locking device, the plunger rod 1 is continuously pressed and vibrated in the continuous working process of the nitrogen spring, and the plunger rod 1 is easy to rotate relative to the piston 4, so that the total length of the nitrogen spring is changed, and the molding quality of a mold is affected.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a nitrogen gas spring's plunger rod anti loosening structure to prior art's defect and not enough.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model relates to a nitrogen spring plunger rod anti-loosening structure, which comprises a plunger rod and a piston; a piston threaded hole is formed in one end face of the piston; the plunger rod is provided with a column external thread matched with the piston threaded hole; the piston threaded hole is in threaded connection with the external thread of the column; a joint mounting hole is formed in the other end face of the piston; a rotation stopping joint with a tubular structure is arranged in the joint mounting hole; one end of the rotation stopping joint is fixed on the plunger rod; the other end of the rotation stopping joint is fixed on the piston.
Furthermore, one end of the piston is provided with a column inner screw hole; the outer side wall of the rotation stopping joint is provided with a joint external thread matched with the column internal thread hole; a convex ring is arranged on the outer side wall of the rotation stopping joint; a limiting ring is arranged in the joint mounting hole; the external thread of the joint penetrates through the limiting ring and then is in threaded connection with the inner threaded hole of the column; the convex ring is tightly pressed on one end face of the limiting ring far away from the plunger rod; the thread direction of the joint external thread is opposite to that of the column external thread; the end face of the plunger rod is pressed on the end face of the limiting ring.
After the structure is adopted, the utility model discloses beneficial effect does: in the plunger rod anti-loosening structure of the nitrogen spring, a piston threaded hole is formed in one end face of the piston; the plunger rod is provided with a column external thread matched with the piston threaded hole; the piston threaded hole is in threaded connection with the column external thread; the other end face of the piston is provided with a joint mounting hole; a rotation stopping joint with a tubular structure is arranged in the joint mounting hole; one end of the rotation stopping joint is fixed on the plunger rod; the other end of the rotation stopping joint is fixed on the piston. When the utility model is used, the rotation stopping joint can connect the central sealing rod and the plunger piston hole; the rotation stopping joint is fixed on the piston, the plunger rod cannot rotate, the plunger rod is prevented from rotating and loosening on the piston, the total length of the nitrogen spring is ensured, and the temperature of the mold is higher than the molding quality.
Drawings
FIG. 1 is a schematic structural view of a prior art nitrogen spring;
fig. 2 is a schematic structural diagram of the present invention;
FIG. 3 is a schematic view of the plunger rod construction;
FIG. 4 is a schematic view of the piston construction;
FIG. 5 is a schematic structural view of a rotation stop joint;
description of reference numerals:
1. a plunger rod; 101. a plunger hole; 102. an air inlet; 103. a post external thread;
104. a post inner threaded hole; 2. a gland; 3. a cylinder barrel; 4. a piston; 401. a piston threaded bore;
402. a connector mounting hole; 402a, a limit ring; 5. a central sealing rod; 6. a stop valve;
7. a rotation stopping joint; 701. a connector external thread; 702. a convex ring.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 to 5, the plunger rod anti-loosening structure of the nitrogen spring of the present invention comprises a plunger rod 1 and a piston 4; a piston threaded hole 401 is formed in one end face of the piston 4; the plunger rod 1 is provided with a column external thread 103 matched with the piston threaded hole 401; the piston threaded hole 401 is in threaded connection with the column external thread 103; a joint mounting hole 402 is formed in the other end face of the piston 4; a rotation stopping joint 7 with a tubular structure is arranged in the joint mounting hole 402; one end of the rotation stopping joint 7 is fixed on the plunger rod 1; the other end of the rotation stopping joint 7 is fixed on the piston 4; the rotation stopping joint 7 is of a tubular structure, and when the rotation stopping joint is connected with the central sealing rod 5, the top end of the central sealing rod 5 is communicated with the plunger hole 101 through the central sealing rod 5; the inner side wall of the rotation stopping joint 7 is provided with a groove for mounting a sealing ring and a guide sleeve; so that the central sealing rod 5 can slide along the rotation stop joint 7; a sealing ring is arranged in a gap between the piston 4 and the rotation stopping joint 7; the rotation stopping joint 7 is fixed on the piston 4, the plunger rod 1 cannot rotate, the plunger rod 1 is prevented from loosening and rotating on the piston 4, the total length of the nitrogen spring is ensured, and the temperature of the mold is higher than the molding quality.
As a preferred mode of the present invention, one end of the piston 4 is provided with a post inner screw hole 104; the outer side wall of the rotation stopping joint 7 is provided with a joint external thread 701 matched with the column internal thread hole 104; a convex ring 702 is arranged on the outer side wall of the rotation stopping joint 7; a limiting ring 402a is arranged in the joint mounting hole 402; the joint external thread 701 penetrates through the limiting ring 402a and then is in threaded connection with the column internal thread hole 104; the convex ring 702 is pressed on an end surface of the limiting ring 402a far away from the plunger rod 1; the thread direction of the joint external thread 701 is opposite to that of the column external thread 103; the end surface of the plunger rod 1 is pressed on the end surface of the limiting ring 402 a; the plunger rod 1 needs to be screwed into the inner cylindrical screw hole 104 clockwise; and the rotation stopping joint 7 is screwed into the column inner threaded hole 104 in the anticlockwise direction; therefore, when the plunger rod 1 tends to be released from the piston 4, i.e. tends to rotate counterclockwise, the plunger rod 1 must be rotated clockwise because the rotation stop joint 7 is screwed with the plunger rod 1 and the plunger rod 1 is released from the rotation stop joint 7; therefore, after the rotation stop joint 7 is locked, the plunger rod 1 cannot rotate relative to the piston 4, and the rotation stop joint 7 must be released first to release the plunger rod 1 from the piston 4.
When the utility model is used, the rotation stopping joint can connect the central sealing rod and the plunger piston hole; the plunger rod needs to be screwed into the inner threaded hole of the column clockwise; the rotation stopping joint is screwed into the inner screw hole of the column in the anticlockwise direction; therefore, when the plunger rod tends to be loosened from the piston, namely tends to rotate anticlockwise, the rotation stopping joint is in threaded connection with the plunger rod, and the plunger rod is loosened from the rotation stopping joint, the plunger rod needs to be rotated clockwise; therefore, after the rotation stopping joint is locked, the plunger rod cannot rotate relative to the piston, and the rotation stopping joint must be firstly released to release the plunger rod from the piston, so that the structure ensures the total length of the nitrogen spring and ensures that the mould is hotter from the forming quality.
The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.
Claims (2)
1. A plunger rod anti-loose structure of a nitrogen spring comprises a plunger rod (1) and a piston (4); a piston threaded hole (401) is formed in one end face of the piston (4); the plunger rod (1) is provided with a column external thread (103) matched with the piston threaded hole (401); the piston threaded hole (401) is in threaded connection with the column external thread (103); the method is characterized in that: a joint mounting hole (402) is formed in the other end face of the piston (4); a rotation stopping joint (7) with a tubular structure is arranged in the joint mounting hole (402); one end of the rotation stopping joint (7) is fixed on the plunger rod (1); the other end of the rotation stopping joint (7) is fixed on the piston (4).
2. The nitrogen spring plunger rod anti-loosening structure as claimed in claim 1, wherein: one end of the piston (4) is provided with a cylindrical inner threaded hole (104); the outer side wall of the rotation stopping joint (7) is provided with a joint external thread (701) matched with the column internal thread hole (104); a convex ring (702) is arranged on the outer side wall of the rotation stopping joint (7); a limiting ring (402 a) is arranged in the joint mounting hole (402); the joint external thread (701) penetrates through the limiting ring (402 a) and then is in threaded connection with the column internal thread hole (104); the convex ring (702) is pressed on one end surface of the limiting ring (402 a) far away from the plunger rod (1); the thread direction of the joint external thread (701) is opposite to that of the column external thread (103); the end face of the plunger rod (1) is pressed on the end face of the limiting ring (402 a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921314844.8U CN210318302U (en) | 2019-08-14 | 2019-08-14 | Nitrogen spring's plunger rod anti loosening structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921314844.8U CN210318302U (en) | 2019-08-14 | 2019-08-14 | Nitrogen spring's plunger rod anti loosening structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210318302U true CN210318302U (en) | 2020-04-14 |
Family
ID=70129831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921314844.8U Expired - Fee Related CN210318302U (en) | 2019-08-14 | 2019-08-14 | Nitrogen spring's plunger rod anti loosening structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210318302U (en) |
-
2019
- 2019-08-14 CN CN201921314844.8U patent/CN210318302U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200414 |