CN201120740Y - Overcurrent protection oil cylinder of a press - Google Patents
Overcurrent protection oil cylinder of a press Download PDFInfo
- Publication number
- CN201120740Y CN201120740Y CN 200720042163 CN200720042163U CN201120740Y CN 201120740 Y CN201120740 Y CN 201120740Y CN 200720042163 CN200720042163 CN 200720042163 CN 200720042163 U CN200720042163 U CN 200720042163U CN 201120740 Y CN201120740 Y CN 201120740Y
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- CN
- China
- Prior art keywords
- cylinder body
- piston
- cylinder
- oil cylinder
- diameter section
- 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 of a pressure machine, which belongs to the pressure machine field. The overload protection oil cylinder comprises a cylinder body with an opening at the upper end, and a piston arranged in the cylinder body, the poston is composed of a large diameter section at the lower part and a small diameter section at the upper part, the large diameter section of the piston is matched with the inner cavity of the cylinder body, the small diameter section of the piston is exposed outside the cylinder body from the upper end of the cylinder body, an oil mouth connected with a safety valve is arranged at the bottom part of the cylinder body, the bottom part of the inner cavity of the cylinder body is closed, a pressing ring is arranged at the opening at the upper end of the cylinder body, the pressing ring is sleeved on the outer circumference of the small diameter section of the piston, and the pressing ring is connected with the cylinder body through thread. The bottom part of the oil cylinder is closed in the utility model, the adoption of the opening at the upper part and the pressing ring ensures that the piston can be directly installed from the upper part, the assembly and the disassembly are convenient, the sealing performance of the inner cavity of the oil cylinder is good, and a sealing ring is only required to be arranged between the large diameter section of the piston and the inner wall of the oil cylinder. The utility model is applied in the pressure machines, can provide overload protection to machine parts such as sliding blocks and moulds, and prevents the machine parts from being damaged, and the sealing performance of the utility model is excellent, and the operation is more reliable.
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; this hydraulic fluid port can be connected with a safety valve; the piston lower end is full of hydraulic oil; come 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, easily caused sealing ring to damage; when work; since gapped between gland and the sealing ring, easily sealing ring is clamp-oned in the gap, make the sealing ring folder bad; cause leakage of oil, and maintenance difficult.
The utility model content
The purpose of this utility model provides a kind of overload protection oil cylinder of forcing press, makes its good seal, easy for installation, uses more reliable.
The purpose of this utility model is achieved in that a kind of overload protection oil cylinder of forcing press; comprise cylinder body; 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; 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; cylinder base is provided with a hydraulic fluid port that can be connected with safety valve; described 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.
The utility model adopts upper opening and pressure ring form with the oil cylinder bottom lock, makes the installation of piston directly to pack into from top, its easy accessibility, and the cylinder cavity closure is good, only needs to be provided with sealing ring between piston big footpath section and oil cylinder inner wall.The utility model is applied on the forcing press, can provide overload protection to parts such as slide block and moulds, avoids damaging parts, and himself good seal uses more reliable.
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.
The specific embodiment
As figure; overload protection oil cylinder for forcing press; comprise cylinder body 4; cylinder body 4 upper ends are provided with opening; be provided with piston 2 in the cylinder body 4; 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; the path section of piston 2 is exposed outside the cylinder body from the opening of cylinder body 4 upper ends; cylinder body 4 bottoms are provided with a hydraulic fluid port 5 that can be connected with safety valve, described inner chamber of cylinder block 3 bottom locks, and the opening part of cylinder body 4 upper ends is provided with pressure ring 1; pressure ring 1 is sleeved on the path section periphery of piston 2, is threaded between pressure ring 1 and the cylinder body 4.
The utility model adopts upper opening and pressure ring 1 form with the oil cylinder bottom lock, makes the installation of piston 2 directly to pack into from top, its easy accessibility, and the cylinder cavity closure is good, only needs to be provided with sealing ring between piston 2 big footpath sections and oil cylinder inner wall.The utility model is applied on the forcing press, can provide overload protection to parts such as slide block and moulds, avoids damaging parts, and himself good seal uses more reliable.
Claims (1)
1, a kind of overload protection oil cylinder of forcing press; comprise cylinder body; 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; 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; cylinder base is provided with a hydraulic fluid port that can be connected with safety valve; it is characterized in that: described 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720042163 CN201120740Y (en) | 2007-11-09 | 2007-11-09 | Overcurrent protection oil cylinder of a press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720042163 CN201120740Y (en) | 2007-11-09 | 2007-11-09 | Overcurrent protection oil cylinder of a press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201120740Y true CN201120740Y (en) | 2008-09-24 |
Family
ID=40007962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200720042163 Expired - Fee Related CN201120740Y (en) | 2007-11-09 | 2007-11-09 | Overcurrent protection oil cylinder of a press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201120740Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105291472A (en) * | 2015-12-09 | 2016-02-03 | 四川内江鸿强机床有限公司 | Hydraulic overload protection structure of press machine |
| CN110355250A (en) * | 2019-08-12 | 2019-10-22 | 济南二机床集团有限公司 | A kind of toggle rod type machinery bound edge press machine |
-
2007
- 2007-11-09 CN CN 200720042163 patent/CN201120740Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105291472A (en) * | 2015-12-09 | 2016-02-03 | 四川内江鸿强机床有限公司 | Hydraulic overload protection structure of press machine |
| CN110355250A (en) * | 2019-08-12 | 2019-10-22 | 济南二机床集团有限公司 | A kind of toggle rod type machinery bound edge press machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080924 Termination date: 20101109 |