CN101342800A - Numerical control multi-point blank pressing frame hydraulic press - Google Patents
Numerical control multi-point blank pressing frame hydraulic press Download PDFInfo
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- CN101342800A CN101342800A CNA2008101964117A CN200810196411A CN101342800A CN 101342800 A CN101342800 A CN 101342800A CN A2008101964117 A CNA2008101964117 A CN A2008101964117A CN 200810196411 A CN200810196411 A CN 200810196411A CN 101342800 A CN101342800 A CN 101342800A
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- hydraulic press
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- blank pressing
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Abstract
The invention discloses a frame type hydraulic press characterized by numerical control and multi-point blank pressing, comprising a hydraulic machine and a hydraulic circuit controlling the hydraulic machine; wherein, the hydraulic circuit is divided into a lower hydraulic system and an upper hydraulic system of the hydraulic press; oil cylinders are arranged at the four sides and the center of the work table of the hydraulic press; the oil inlet of the lower hydraulic system of the hydraulic press is only connected with the oil cylinder in the middle of the work table; when in running, the oil cylinders exert pressure from five sides, thus forming multi-point blank pressing and uniform pressure, which is more suitable for pressing large objects; the superior caval hydraulic circuit of the master cylinder of the hydraulic press is provided with a pressure relief device; the inferior caval hydraulic circuit of the master cylinder is provided with a hydraulic buffered device which ensures the stable pressing without noises in the pressing process.
Description
Technical field
The present invention relates to a kind of hydraulic press, be specifically related to a kind of numerical control multi-point blank pressing frame hydraulic press with pooling feature.
Background technology
Common hydraulic press in the market is generally some flanging, when making large hydraulic spare, occurs the phenomenon of pressure inequality easily, influences product quality.In addition, hydraulic press is in slide block F.F., slow-motion and the process that presses down, owing to there not be the process of buffering, so bump in various degree can occur in the compacted products process, and the smoothness of compacting is also very bad, the while in pressing process also with very big noise.
Summary of the invention
The invention provides a kind of numerical control multi-point blank pressing frame hydraulic press with pooling feature.
In order to solve above technical problem, a kind of numerical control multi-point blank pressing frame hydraulic press of the present invention, the oil circuit that comprises hydraulic machine and control hydraulic machine, described oil circuit is divided under the hydraulic press hydraulic system on the hydraulic system and hydraulic press, its innovative point is: four limits of described hydraulic press workbench and the centre oil cylinder that all distributes, and the oil inlet pipe of hydraulic system only is connected with oil cylinder in the middle of the workbench under its hydraulic press; Described hydraulic press master cylinder epicoele oil circuit is provided with pressure relief device, and master cylinder cavity of resorption oil circuit is provided with hydraulic damping device.
Described pressure relief device is connected in parallel on the oil circuit by pressure release piece and Solenoid ball valve and constitutes.
Described pressure release piece is by being hollow form, built-in plug-in unit in the pressure release piece shell at the end being arranged, and described plug-in unit is connected with spring, and spring is connected with cover plate, and the cover plate activity is fixed on the outer faucal of pressure release piece, and described Solenoid ball valve is connected on the cover plate of pressure release piece.
Described hydraulic damping device is connected in series on oil circuit by accumulator and check valve, Solenoid ball valve.
Described accumulator also is connected with auxiliary oil pipe by reversal valve.
The advantage of above structure is: the hydraulic cylinder of described hydraulic press be distributed in respectively workbench four limits and in the heart, operating pressure provides from these 5, forms multi-point blank pressing, its pressure is even, is more suitable for suppressing the object of big part.
Described hydraulic press by the accumulator accumulation of energy, makes hydraulic damping device long closing under the prerequisite that the reversal valve on the oil circuit cuts out owing to increased hydraulic damping device on hydraulic circuit.Plug-in unit mouth folding by band plug-in unit proportioning valve realizes that slide block does not have bump when moving then, and compacting steadily realizes simultaneously noiselessness in pressing process.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 be the utility model A-A shown in Figure 1 to structural representation;
Fig. 3 is a hydraulic schematic diagram of going up hydraulic system of the present invention;
Fig. 4 is the hydraulic schematic diagram of hydraulic system down of the present invention.
The specific embodiment
As shown in Figure 1, 2, oil cylinder a is installed, oil cylinder b, c, d, e is installed respectively on workbench four limits at the center of hydraulic press workbench 1.
Shown in Fig. 3,4, ejecting the chamber and returning the chamber of oil cylinder a all is communicated with fuel tank 3 by oil inlet pipe 2.Be interconnected between oil cylinder b, c, d, the e, also all be connected on the fuel tank 3.All be connected with prefill valve 4 and ratio adjusting valve 5 on the oil circuit of above-mentioned oil cylinder a, b, c, d, e.When oil cylinder a oil-feed, when ejecting, oil cylinder b, c, d, e form negative pressure, also eject with oil cylinder a, and slide block slides to matched moulds downwards.Proportional pressure valve 5 on oil cylinder a, b, c, d, the e is all opened and is drained the oil at this moment, and slide block is continued downwards, forms to stretch.In drawing process, the pressure passing ratio pressure valve 5 of oil cylinder a, b, c, d, e is adjusted to the pressure unanimity automatically, forms the pressure-pad-force of 5 equalizations.
For the control oil circuit of last hydraulic system, be connected with hydraulic damping device 7 on the oil circuit of its master cylinder 6 cavity of resorptions.The proportioning valve 8 of band plug-in unit is connected on this hydraulic damping device 7 and the oil circuit, and this hydraulic damping device 7 is provided with reversal valve 12 and be connected with oil inlet pipe 9 on described oil inlet pipe 9.
Above-mentioned hydraulic damping device 7 is connected in series by accumulator 13, Solenoid ball valve 10 and check valve 11.This hydraulic damping device 7 is in the long state that closes generally speaking.Only under the little situation of pressure, fuel tank is bought oil to accumulator 13 by oil inlet pipe 9, and Solenoid ball valve 10 and reversal valve 12 are opened, and after oil reached setting value, Solenoid ball valve 10 and reversal valve 12 closed, oil inlet pipe 9 fuel cut-offs, and hydraulic damping device 7 cuts out.Its hydraulic damping device 7 keeps certain pressure in normally off, and maintenance is mild when making the slide block operation, noise is little.
In order to reach better effect, the proportioning valve 8 of hydraulic damping device 7 with the band plug-in unit is connected, because the proportioning valve 8 of band plug-in unit is connected with pulse current, carries out the multiple spot collection by the proportioning valve 8 paired pulses electric currents of being with plug-in unit, realize plug-in unit mouth openings of sizes according to different states; Accomplish slowly to close slide block with regard to slip when the plug-in unit mouth, when the plug-in unit mouth open to maximum slide block with regard to F.F..Like this, by the adjusting of plug-in unit and hydraulic damping device 7, make slider of hydraulic press when operation milder, noise is littler.
Claims (5)
1, a kind of numerical control multi-point blank pressing frame hydraulic press, the oil circuit that comprises hydraulic machine and control hydraulic machine, described oil circuit is divided under the hydraulic press hydraulic system on the hydraulic system and hydraulic press, it is characterized in that: four limits of described hydraulic press workbench and the centre oil cylinder that all distributes, the oil inlet pipe of hydraulic system only is connected with oil cylinder in the middle of the workbench under its hydraulic press; Described hydraulic press master cylinder epicoele oil circuit is provided with pressure relief device, and master cylinder cavity of resorption oil circuit is provided with hydraulic damping device.
2, a kind of numerical control multi-point blank pressing frame hydraulic press according to claim 1 is characterized in that: described pressure relief device is connected in parallel on the oil circuit by pressure release piece and Solenoid ball valve and constitutes.
3, a kind of numerical control multi-point blank pressing frame hydraulic press according to claim 2, it is characterized in that: described pressure release piece is by being hollow form, built-in plug-in unit in the pressure release piece shell at the end being arranged, described plug-in unit is connected with spring, spring is connected with cover plate, the cover plate activity is fixed on the outer faucal of pressure release piece, and described Solenoid ball valve is connected on the cover plate of pressure release piece.
4, a kind of numerical control multi-point blank pressing frame hydraulic press according to claim 1 is characterized in that: described hydraulic damping device is connected in series on oil circuit by accumulator and check valve, Solenoid ball valve.
5, a kind of numerical control multi-point blank pressing frame hydraulic press according to claim 4 is characterized in that: described accumulator also is connected with auxiliary oil pipe by reversal valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101964117A CN101342800A (en) | 2008-09-09 | 2008-09-09 | Numerical control multi-point blank pressing frame hydraulic press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101964117A CN101342800A (en) | 2008-09-09 | 2008-09-09 | Numerical control multi-point blank pressing frame hydraulic press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101342800A true CN101342800A (en) | 2009-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101964117A Pending CN101342800A (en) | 2008-09-09 | 2008-09-09 | Numerical control multi-point blank pressing frame hydraulic press |
Country Status (1)
| Country | Link |
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| CN (1) | CN101342800A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205663A (en) * | 2011-03-14 | 2011-10-05 | 南通锻压设备股份有限公司 | Numerically-controlled multi-point side-pressing frame hydraulic machine |
| CN107524662A (en) * | 2017-10-12 | 2017-12-29 | 南通锻压设备股份有限公司 | A kind of hydraulic press energy regenerating and sliding block weight balancing system |
-
2008
- 2008-09-09 CN CNA2008101964117A patent/CN101342800A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205663A (en) * | 2011-03-14 | 2011-10-05 | 南通锻压设备股份有限公司 | Numerically-controlled multi-point side-pressing frame hydraulic machine |
| CN107524662A (en) * | 2017-10-12 | 2017-12-29 | 南通锻压设备股份有限公司 | A kind of hydraulic press energy regenerating and sliding block weight balancing system |
| CN107524662B (en) * | 2017-10-12 | 2023-06-23 | 南通锻压设备如皋有限公司 | Hydraulic energy recovery and sliding block gravity balance system |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090114 |