CN202462946U - Overload protection oil cylinder for press - Google Patents
Overload protection oil cylinder for press Download PDFInfo
- Publication number
- CN202462946U CN202462946U CN 201220041814 CN201220041814U CN202462946U CN 202462946 U CN202462946 U CN 202462946U CN 201220041814 CN201220041814 CN 201220041814 CN 201220041814 U CN201220041814 U CN 201220041814U CN 202462946 U CN202462946 U CN 202462946U
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- China
- Prior art keywords
- cylinder body
- piston
- ring
- cylinder
- opening
- 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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Abstract
The utility model discloses an overload protection oil cylinder for a press, belonging to the field of the press. The overload protection oil cylinder comprises a cylinder body; an opening is arranged at the upper end of the cylinder body; a piston is arranged inside the cylinder body; the piston consists of a large-caliber section at the lower part and a small-caliber section at the upper part; the large-caliber section of the piston is matched with an inner cavity of the cylinder body; the small-caliber section of the piston is exposed out of the cylinder body from an opening at the upper end of the cylinder body; an oil opening connected with a security valve is arranged at the bottom of the cylinder body; the bottom of the inner cavity of the cylinder body is sealed; a pressing ring is arranged at the opening at the upper end of the cylinder body; the pressing ring is sleeved on the periphery of the small-caliber section of the piston; the pressing ring is in threaded connection with the cylinder body; and an elastic ring and a guide ring are sequentially arranged between the inner wall of the cylinder body and the pressing ring. According to the overload protection oil cylinder provided by the utility model, the elastic ring and the guide ring are sequentially arranged between the inner wall of the cylinder body and the pressing ring; the pressing ring can be conveniently and vertically moved under the effect of the guide ring; and when the pressing ring and the guide ring are abraded, the pressing ring and the guide ring can form good contact due to the elastic effect of the elastic ring, so that the sealing property can be ensured well.
Description
Technical field
The utility model relates to a kind of safety guard of forcing press, particularly the overload protection oil cylinder of forcing press.
Background technology
Forcing press overload protection oil cylinder of the prior art; Comprise cylinder body, the equal opening of cylinder body upper and lower end, the capping that has been threaded of cylinder body lower ending opening place; Be provided with lower seal between capping and the cylinder body; Be provided with piston in the inner chamber of cylinder block, the big footpath section of piston matches with inner chamber of cylinder block, and the path section of piston upper end is exposed outside the cylinder body from the opening of cylinder body upper end; Cylinder base is provided with hydraulic fluid port, and this hydraulic fluid port can be connected with a safety valve, and the piston lower end is full of hydraulic oil, comes from the pressure on piston top when excessive; Safety valve is opened, and the oil cylinder draining has been avoided the damage of forcing press mould and corresponding attaching parts, but existing overload protection oil cylinder also has its weak point: be threaded between capping and the cylinder body and sealing ring is housed; Cause the assembling difficulty, needed to rotate the sealing ring of packing into, be prone to cause sealing ring to damage; When work, since gapped between gland and the sealing ring, be prone to sealing ring is clamp-oned in the gap; Make the sealing ring folder bad, cause leakage of oil, and maintenance difficult.
The patent No. is the protection oil cylinder that 2007200421631 patent provides a kind of new version for this reason; It utilizes the cooperation of parts such as pressure ring; A kind of have easy accessibility, sealing property better protect oil cylinder are provided; But in use, also have certain wear between pressure ring and the corresponding inboard wall of cylinder block, the long-time back sealing property of using can be received certain influence.
The utility model content
The purpose of the utility model provides a kind of overload protection oil cylinder of forcing press, and its sealing property is further improved.
The purpose of the utility model is achieved in that the utility model comprises cylinder body, and the cylinder body upper end is provided with opening, is provided with piston in the cylinder body; Piston is made up of the big footpath section of bottom and the path section on top, and the big footpath section of piston matches with inner chamber of cylinder block, and the path section of piston is exposed outside the cylinder body from the opening of cylinder body upper end; Cylinder base is provided with the hydraulic fluid port that can be connected with safety valve; The inner chamber of cylinder block bottom lock, the opening part of cylinder body upper end is provided with pressure ring, and pressure ring is sleeved on the path section periphery of piston; Be threaded between pressure ring and the cylinder body, be provided with elastic ring and guide collar between said inboard wall of cylinder block and the pressure ring successively.
The utility model is established elastic ring and guide collar successively between inboard wall of cylinder block and pressure ring; The effect that guide collar plays can easily move up and down pressure ring; The effect of elastic ring is when pressure ring and guide collar generation wearing and tearing; Because the elastic force effect of elastic ring makes pressure ring and guide collar can form excellent contact all the time, and its sealing property is well guaranteed.
Description of drawings
Fig. 1 is the utility model structural representation.
Wherein, 1 pressure ring, 2 pistons, 3 inner chamber of cylinder block, 4 cylinder bodies, 5 hydraulic fluid ports, 6 are that elastic ring, 7 is guide collar.
The specific embodiment
Like figure, the overload protection oil cylinder for forcing press comprises cylinder body 4; Cylinder body 4 upper ends are provided with opening, are provided with piston 2 in the cylinder body 4, and piston 2 is made up of the big footpath section of bottom and the path section on top; The big footpath section of piston 2 matches with inner chamber of cylinder block 3, and the path section of piston 2 is exposed outside the cylinder body from the opening of cylinder body 4 upper ends, and cylinder body 4 bottoms are provided with the hydraulic fluid port 5 that can be connected with safety valve; Said inner chamber of cylinder block 3 bottom locks; The opening part of cylinder body 4 upper ends is provided with pressure ring 1, and pressure ring 1 is sleeved on the path section periphery of piston 2, is threaded between pressure ring 1 and the cylinder body 4.Be provided with elastic ring 6 and guide collar 7 between said inboard wall of cylinder block and the pressure ring 1 successively.
Claims (1)
1. the overload protection oil cylinder of forcing press comprises cylinder body, and the cylinder body upper end is provided with opening; Be provided with piston in the cylinder body, piston is made up of the big footpath section of bottom and the path section on top, and the big footpath section of piston matches with inner chamber of cylinder block; The path section of piston is exposed outside the cylinder body from the opening of cylinder body upper end, and cylinder base is provided with the hydraulic fluid port that can be connected with safety valve, inner chamber of cylinder block bottom lock; The opening part of cylinder body upper end is provided with pressure ring, and pressure ring is sleeved on the path section periphery of piston, is threaded between pressure ring and the cylinder body; It is characterized in that, be provided with elastic ring and guide collar between said inboard wall of cylinder block and the pressure ring successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220041814 CN202462946U (en) | 2012-02-09 | 2012-02-09 | Overload protection oil cylinder for press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220041814 CN202462946U (en) | 2012-02-09 | 2012-02-09 | Overload protection oil cylinder for press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202462946U true CN202462946U (en) | 2012-10-03 |
Family
ID=46911138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220041814 Expired - Fee Related CN202462946U (en) | 2012-02-09 | 2012-02-09 | Overload protection oil cylinder for press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202462946U (en) |
-
2012
- 2012-02-09 CN CN 201220041814 patent/CN202462946U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20150209 |
|
| EXPY | Termination of patent right or utility model |