CN203570743U - Piston and piston rod connecting structure capable of preventing piston rod from breaking - Google Patents
Piston and piston rod connecting structure capable of preventing piston rod from breaking Download PDFInfo
- Publication number
- CN203570743U CN203570743U CN201320700257.9U CN201320700257U CN203570743U CN 203570743 U CN203570743 U CN 203570743U CN 201320700257 U CN201320700257 U CN 201320700257U CN 203570743 U CN203570743 U CN 203570743U
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- Prior art keywords
- piston
- piston rod
- rod
- connecting structure
- center
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- Expired - Lifetime
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- 238000009434 installation Methods 0.000 abstract 3
- 238000001746 injection moulding Methods 0.000 abstract 2
- 238000007789 sealing Methods 0.000 abstract 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model provides a piston and piston rod connecting structure capable of preventing a piston rod from breaking. The piston and piston rod connecting structure comprises the piston rod, a piston and a perforation screw. The piston rod is connected with the piston through threads. The perforation screw is arranged on the thread cooperation end face. The piston rod comprises an unthreaded rod segment and a threaded segment. The piston comprises a center hole threaded segment, a center unthreaded hole segment and an installation groove formed inside the center unthreaded hole segment. An O-type sealing ring is arranged inside the installation groove of the piston. According to the piston and piston rod connecting structure capable of preventing the piston rod from breaking, the problem that due to stress concentration of the root of an installation groove of an O-type sealing ring of an original structure, the piston rod breaks is solved, so that the structural reliability of the piston rod of an injection molding machine is greatly improved, and the service life of the piston rod of the injection molding machine is greatly prolonged.
Description
Technical field
The utility model relates to a kind of injection machine structure, specifically a kind of piston and piston rod linkage structure that prevents rod fracture.
Background technique
As shown in Figure 1-2, piston 2 and piston rod 1 are in design and actual use, in order to have prevented from that hydraulic oil from, from the two connection part leakage, tending to design an O RunddichtringO mounting groove 3 in the polished end of piston rod 1, packed O RunddichtringO into when as installed playing the effect of leakage proof.Due to structure or processing, at the bottom land of this groove, have tool marks, wedge angle or less fillet, and problem of stress concentration also occurs thereupon.Injection machine is in design using process, and groove root 31 stress of piston rod 1 are concentrated and formed tired microscopic crack, and then crackle constantly expands and form piston rod 1 and destroy from groove root 31, until rupture, thereby cause machine to produce. herein
Model utility content
The purpose of this utility model is that the O RunddichtringO groove of eliminating existing piston rod and piston connection part exists cause stress to concentrate the problem that causes fracture, a kind of piston and piston rod linkage structure that prevents rod fracture is provided, its function is identical, but structural reliability and working life are greatly improved.
In order to solve the problems of the technologies described above, the utility model provides following technological scheme:
The piston and the piston rod linkage structure that prevent rod fracture, comprise piston rod, piston and junction of the edges of two sheets of paper screw, and piston rod and piston are threaded connection, and screw-thread fit end face is provided with junction of the edges of two sheets of paper screw;
Piston rod comprises polished rod section and thread section;
Piston comprises center hole thread section, center unthreaded hole section and is arranged on the mounting groove in the unthreaded hole section of center.
Further, in the mounting groove of piston, be provided with O RunddichtringO.
A kind of piston and piston rod linkage structure that prevents rod fracture of the utility model, solved the rod fracture problem that O RunddichtringO mounting groove Root Stress concentration problem that original structure exists is brought, injection machine piston rod construction reliability and working life are greatly improved.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for specification, is used from explanation the utility model with embodiment one of the present utility model, does not form restriction of the present utility model.In the accompanying drawings:
Fig. 1 is original piston rod and piston mounting arrangement schematic diagram;
Fig. 2 is the local enlarged diagram of original piston rod and piston mounting arrangement A place;
Fig. 3 is piston rod of the present utility model and piston mounting arrangement schematic diagram;
Fig. 4 is the local enlarged diagram of piston rod of the present utility model and piston mounting arrangement B place.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein is only for description and interpretation the utility model, and be not used in restriction the utility model.
Prevent as shown in Figure 3-4 piston and the piston rod linkage structure of rod fracture, comprise piston rod 1, piston 2 and junction of the edges of two sheets of paper screw 4, piston rod 1 is threaded connection with piston 2, and screw-thread fit end face is provided with junction of the edges of two sheets of paper screw 4; Piston rod 1 comprises polished rod section 11 and thread section 12; Piston 2 comprises center hole thread section 21, center unthreaded hole section 22 and is arranged on the mounting groove 3 in center unthreaded hole section 22; In the mounting groove 3 of piston 2, be provided with O RunddichtringO.
A kind of piston and piston rod linkage structure that prevents rod fracture of the utility model, piston rod 1 is provided with junction of the edges of two sheets of paper screw 4 with the screw-thread fit end face of piston 2, prevents from becoming flexible; In the mounting groove 3 of piston 2, be provided with O RunddichtringO, on piston rod 1, without this groove, fundamentally avoided stress to concentrate caused breakage problem, make injection machine piston rod 1 reliability of structure and be greatly improved working life.
Finally it should be noted that: the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technological scheme that still can record aforementioned each embodiment is modified, or part technical characteristics is wherein equal to replacement.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (2)
1. the piston and the piston rod linkage structure that prevent rod fracture, comprise piston rod, piston and junction of the edges of two sheets of paper screw, it is characterized in that: described piston rod and piston are threaded connection, and screw-thread fit end face is provided with junction of the edges of two sheets of paper screw;
Described piston rod comprises polished rod section and thread section;
Described piston comprises center hole thread section, center unthreaded hole section and is arranged on the mounting groove in the unthreaded hole section of center.
2. a kind of piston and piston rod linkage structure that prevents rod fracture according to claim 1, is characterized in that: in the mounting groove of described piston, be provided with O RunddichtringO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320700257.9U CN203570743U (en) | 2013-11-06 | 2013-11-06 | Piston and piston rod connecting structure capable of preventing piston rod from breaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320700257.9U CN203570743U (en) | 2013-11-06 | 2013-11-06 | Piston and piston rod connecting structure capable of preventing piston rod from breaking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203570743U true CN203570743U (en) | 2014-04-30 |
Family
ID=50538476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320700257.9U Expired - Lifetime CN203570743U (en) | 2013-11-06 | 2013-11-06 | Piston and piston rod connecting structure capable of preventing piston rod from breaking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203570743U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913872A (en) * | 2015-04-14 | 2015-09-16 | 西安中测计量技术有限公司 | Piston system preventing piston rod from fracture |
| CN107378413A (en) * | 2017-08-23 | 2017-11-24 | 河北天理环保科技有限公司 | Pneumatic hammer Piston reform method |
-
2013
- 2013-11-06 CN CN201320700257.9U patent/CN203570743U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913872A (en) * | 2015-04-14 | 2015-09-16 | 西安中测计量技术有限公司 | Piston system preventing piston rod from fracture |
| CN104913872B (en) * | 2015-04-14 | 2018-04-24 | 西安中测计量技术有限公司 | A kind of piston system for preventing rod fracture |
| CN107378413A (en) * | 2017-08-23 | 2017-11-24 | 河北天理环保科技有限公司 | Pneumatic hammer Piston reform method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140430 |