CN2496646Y - Hydraulic stretching machine - Google Patents
Hydraulic stretching machine Download PDFInfo
- Publication number
- CN2496646Y CN2496646Y CN 01242512 CN01242512U CN2496646Y CN 2496646 Y CN2496646 Y CN 2496646Y CN 01242512 CN01242512 CN 01242512 CN 01242512 U CN01242512 U CN 01242512U CN 2496646 Y CN2496646 Y CN 2496646Y
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- control gear
- comparison circuit
- oil cylinder
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Abstract
The utility model provides a stretching hydraulic machine which comprises a machine frame formed by an upper beam, a lower beam, and vertical columns, a main oil cylinder arranged on the upper beam, an edge pressing oil cylinder arranged on the lower beam, and the utility model is characterized in that a displacement sensor for detecting the displacement of the main oil cylinder, a pressure sensor for detecting the pressure of the edge pressing oil cylinder and a controlling device are arranged. Compared with the prior art, the utility model has the advantages that the stretching hydraulic machine does not affect the stretching and the forming of the product, the stretching speed is greatly enhanced, and the reliability is high.
Description
The utility model relates to a kind of forging machine tool, particularly a kind of stretching-machine.
The purposes of hydraulic drawing press mainly provides certain pressure, obtains the product or the goods of required shape and size by the plastic deformation of material by mould.Because general hydraulic drawing press user is difficult to the hydraulic tensioning forming principle is done deep discussion, so when material often changes, when (kind, size, thickness, temperature etc.), also can only take an experienced safety speed and pressure.This setting is relatively guarded often, promptly adopts lower draw speed and a certain constant pressure-pad-force to guarantee the reliability of drawing and forming.This just influences the production efficiency of hydraulic drawing press.At present, the conventional way that improves the hydraulic drawing press operating efficiency is to improve unloaded F.F. and opening speed, though adopting this mode also can enhance productivity to a certain extent, but because the drawing process (especially deep drawn process) of hydraulic drawing press accounts for the most of the time in the working cycles of entire machine, therefore, it is limited adopting the achievement of enhancing productivity that aforesaid way obtained, and the raising of corresponding design cost, material alternative costs, processing technology cost, maintenance cost makes that the time benefit of saving may be a negative value.
Goal of the invention of the present utility model is to provide a kind of drawing and forming that neither influences goods, can significantly improve the hydraulic drawing press of draw speed simultaneously again.
The utility model is to realize like this, comprise by upper beam, underbeam, the frame that column constitutes, be arranged on the master cylinder on the upper beam, be arranged on the flanging oil cylinder above the underbeam, its special feature is also to be provided with the displacement transducer that is used to detect the master cylinder displacement, be used to detect the pressure sensor and the control device of flanging oil cylinder oil pressure, control device is mainly by electric control gear, frequency converter, the man-machine interface control device, comparison circuit, proportioning valve constitutes, the motor that drives the master cylinder oil pump is a variable-frequency motor, the signal output part of displacement transducer links to each other with the signal input part of electric control gear, the output of pressure sensor links to each other with the input of comparison circuit, the control signal output of electric control gear links to each other with the signal input part of comparison circuit, the comparison circuit output links to each other with the control signal input of proportioning valve, the signal controlling end of frequency converter links to each other with the signal controlling end of corresponding electric control gear, and the man-machine interface control device links to each other with the signal controlling end of corresponding electric control gear.
During work, die is fixed on the main oil cylinder piston, punch is fixed on the relevant position of underbeam, on the piston of flanging oil cylinder, fix corresponding blank holder, draw speed parameter and flanging pressure parameter by man-machine interface input setting, start hydraulic drawing press then, it is descending fast that master cylinder drives die earlier rapidly, when treating near punch, displacement transducer transmits a signal of telecommunication to electric control gear, electric control gear is then controlled the rotating speed of variable-frequency motor by the control frequency converter, making the rate conversion that moves down of master cylinder is draw speed, along with driving die, master cylinder moves down, displacement transducer is transferred to electric control gear with the present position of master cylinder, electric control gear reaches the purpose of transformation limit pressure by the rotating speed of pre-set programs control variable-frequency motor and the oil pressure of flanging oil cylinder, and the effect of pressure sensor is to guarantee that flanging pressure meets preset value.Because flanging pressure can controllably change along with the speed that stretches, the degree of depth, therefore, under the drawing and forming that does not influence goods, can significantly improve draw speed.
Compared with the prior art the utility model has the drawing and forming that neither influences goods, can significantly improve advantage draw speed, that reliability is high simultaneously again.
Fig. 1 is a structural representation of the present utility model.
Now in conjunction with the accompanying drawings and embodiments the utility model is described in further detail:
As shown in the figure, the utility model is mainly by frame 1, be arranged on the master cylinder 3 on frame 1 upper beam 2, the flanging oil cylinder 5 that is arranged on above frame 1 underbeam 4 constitutes, its special feature is also to be provided with the displacement transducer 6 that is used to detect master cylinder 3 piston displacements, be used to detect the pressure sensor 7 and the control device 8 of flanging oil cylinder 5 oil pressure, control device 8 is mainly by electric control gear 9, frequency converter 10, man-machine interface control device 11, comparison circuit 12, proportioning valve 13 constitutes, the motor 15 that drives master cylinder oil pump 14 is a variable-frequency motor, the signal output part of displacement transducer 6 links to each other with the signal input part of electric control gear 9, the output of pressure sensor 7 links to each other with the input of comparison circuit 12, the control signal output of electric control gear 9 links to each other with the signal input part of comparison circuit 12, comparison circuit 12 outputs link to each other with the control signal input of proportioning valve 13, the signal controlling end of frequency converter 10 links to each other with the signal controlling end of corresponding electric control gear 9, and man-machine interface control device 11 links to each other with the signal controlling end of corresponding electric control gear 9.
Claims (1)
1, a kind of hydraulic drawing press, comprise by upper beam, underbeam, the frame that column constitutes, be arranged on the master cylinder on the upper beam, be arranged on the flanging oil cylinder above the underbeam, it is characterized in that also being provided with the displacement transducer that is used to detect the master cylinder displacement, be used to detect the pressure sensor and the control device of flanging oil cylinder oil pressure, control device is mainly by electric control gear, frequency converter, the man-machine interface control device, comparison circuit, proportioning valve constitutes, the motor that drives the master cylinder oil pump is a variable-frequency motor, the signal output part of displacement transducer links to each other with the signal input part of electric control gear, the output of pressure sensor links to each other with the input of comparison circuit, the control signal output of electric control gear links to each other with the signal input part of comparison circuit, the comparison circuit output links to each other with the control signal input of proportioning valve, the signal controlling end of frequency converter links to each other with the signal controlling end of corresponding electric control gear, and the man-machine interface control device links to each other with the signal controlling end of corresponding electric control gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01242512 CN2496646Y (en) | 2001-07-04 | 2001-07-04 | Hydraulic stretching machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01242512 CN2496646Y (en) | 2001-07-04 | 2001-07-04 | Hydraulic stretching machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2496646Y true CN2496646Y (en) | 2002-06-26 |
Family
ID=33654258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01242512 Expired - Lifetime CN2496646Y (en) | 2001-07-04 | 2001-07-04 | Hydraulic stretching machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2496646Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301848C (en) * | 2003-11-24 | 2007-02-28 | 天津市天锻压力机有限公司 | Monitoring system of metal extrusion hydraulic press |
| CN100443878C (en) * | 2004-08-16 | 2008-12-17 | 韩国电力公社 | Forest fire simulated test equipment for polymer insulator |
| CN103307054A (en) * | 2013-06-24 | 2013-09-18 | 北京航空航天大学 | Combined oil cylinder for sheet deep drawing forming hydraulic press |
| CN103350521A (en) * | 2013-03-06 | 2013-10-16 | 上海元禾汽车零件有限公司 | Connecting device for top cylinder of hydraulic press |
| CN105216360A (en) * | 2015-10-19 | 2016-01-06 | 上海理工大学 | Miniature double action hydraulic press and manufacturing process |
| CN108688217A (en) * | 2017-03-31 | 2018-10-23 | 日本电产新宝株式会社 | Decompressor, stamping system and punching press information acquisition method |
-
2001
- 2001-07-04 CN CN 01242512 patent/CN2496646Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301848C (en) * | 2003-11-24 | 2007-02-28 | 天津市天锻压力机有限公司 | Monitoring system of metal extrusion hydraulic press |
| CN100443878C (en) * | 2004-08-16 | 2008-12-17 | 韩国电力公社 | Forest fire simulated test equipment for polymer insulator |
| CN103350521A (en) * | 2013-03-06 | 2013-10-16 | 上海元禾汽车零件有限公司 | Connecting device for top cylinder of hydraulic press |
| CN103307054A (en) * | 2013-06-24 | 2013-09-18 | 北京航空航天大学 | Combined oil cylinder for sheet deep drawing forming hydraulic press |
| CN105216360A (en) * | 2015-10-19 | 2016-01-06 | 上海理工大学 | Miniature double action hydraulic press and manufacturing process |
| CN108688217A (en) * | 2017-03-31 | 2018-10-23 | 日本电产新宝株式会社 | Decompressor, stamping system and punching press information acquisition method |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110704 Granted publication date: 20020626 |