CN202021844U - Numerical control multi-point edge-pressing frame hydraulic machine - Google Patents
Numerical control multi-point edge-pressing frame hydraulic machine Download PDFInfo
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- CN202021844U CN202021844U CN 201120064628 CN201120064628U CN202021844U CN 202021844 U CN202021844 U CN 202021844U CN 201120064628 CN201120064628 CN 201120064628 CN 201120064628 U CN201120064628 U CN 201120064628U CN 202021844 U CN202021844 U CN 202021844U
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Abstract
The utility model relates to a numerical control multi-point edge-pressing frame hydraulic machine, which comprises a working platform and a sliding block. A hydraulic pad driven by a plurality of hydraulic pad oil cylinders evenly distributed inside the working platform is arranged in the working platform. Pressure of each hydraulic pad oil cylinder can be controlled by a hydraulic pad hydraulic oil passage independently. The sliding block is driven by a sliding block oil cylinder, and a hydraulic buffering oil passage and a quick pressure-releasing oil passage are arranged on a hydraulic oil passage of the sliding block oil cylinder. The numerical control multi-point edge-pressing frame hydraulic machine has the advantages that when products are pressed, the pressure of each hydraulic oil pad cylinder can be adjusted according to real situations. Multi-point pressing ensures that the products are high in quality and rejected products are few. No shocks or impact occurs and speed change is gentle by means of the hydraulic buffering oil passage when the downward sliding of the sliding block is slowed down. When the quick pressure-releasing oil passage releases the pressure of the sliding block oil cylinder, secondary pressure releasing is adopted to ensure that the pressure-releasing time is short, pressure releasing is stable and no hydraulic impact occurs.
Description
Technical field
The utility model relates to a kind of hydraulic press, particularly a kind ofly impacts numerical control multi-point blank pressing frame hydraulic press little and that pressing result is good.
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 technical problems to be solved in the utility model provides a kind of numerical control multi-point blank pressing frame hydraulic press little and that pressing result is good that impacts.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of numerical control multi-point blank pressing frame hydraulic press, comprise workbench and slide block, workbench is built-in with hydraulic die cushion, slide block be located at workbench directly over; Its innovative point is: described hydraulic die cushion is evenly distributed on hydraulic die cushion hydraulic oil cylinder driving in the workbench by several, and described each hydraulic die cushion oil cylinder can be by hydraulic die cushion hydraulic circuit independence controlled pressure; Described slide block is by the slide block hydraulic oil cylinder driving, and the hydraulic circuit of slide block oil cylinder is provided with hydraulic cushion oil circuit and quick pressure releasing oil circuit.
Further, described hydraulic die cushion oil cylinder by the piston cylinder that is located at the hydraulic die cushion center and be evenly distributed on around plunger case form.
Further, described slide block oil cylinder is made up of plunger case that is located at the entablature center and the piston cylinder that is located at the plunger case both sides.
Advantage of the present utility model is: hydraulic die cushion is evenly distributed on hydraulic die cushion hydraulic oil cylinder driving in the workbench by several, each hydraulic die cushion oil cylinder can be by the hydraulic circuit independence controlled pressure of hydraulic die cushion, during compacted products, can regulate the pressure of each oil cylinder according to actual conditions, the multiple spot compacting, the product quality height that suppresses, waste product is few.
Slide block is by the slide block hydraulic oil cylinder driving that is arranged in the top beam of hydraulic machine, the hydraulic circuit of slide block oil cylinder is provided with hydraulic cushion oil circuit and quick pressure releasing oil circuit, under the effect of hydraulic cushion oil circuit, slide block descends speed to be converted to when being not more than 50mm/s by being not less than 500mm/s soon, there are not any impact, vibration, speed is flexible to be changed, and has prolonged service life, avoids impacting the leakage of oil point occurring.The quick pressure releasing oil circuit is when carrying out the pressure release of slide block oil cylinder, and by quick oil extraction of a stage low discharge and the pressure release of the quick oil extraction secondary of big flow of two-stage, when guaranteeing that the pressure release time is not more than 0.1s, pressure release is steady, and no hydraulic pressure impacts, and has guaranteed the intensity of hydraulic press.
Hydraulic die cushion oil cylinder and slide block oil cylinder evenly are made up of piston cylinder and plunger case, on the basis of satisfying the pressing process action, reduce manufacturing cycle and cost, energy savings.
Description of drawings
Fig. 1 is the utility model numerical control multi-point blank pressing frame hydraulic press structural representation;
Fig. 2 is along A-A line cutaway view among Fig. 1;
Fig. 3 is a numerical control multi-point blank pressing frame hydraulic press hydraulic die cushion oil circuit hydraulic schematic diagram in the utility model;
Fig. 4 is a numerical control multi-point blank pressing frame hydraulic press slide block oil circuit hydraulic schematic diagram in the utility model;
Fig. 5 is a hydraulic cushion oil circuit hydraulic schematic diagram in the numerical control multi-point blank pressing frame hydraulic press slide block oil circuit in the utility model;
Fig. 6 is a quick pressure releasing oil circuit hydraulic schematic diagram in the numerical control multi-point blank pressing frame hydraulic press slide block oil circuit in the utility model.
The specific embodiment
As shown in Figure 1, 2, hydraulic press workbench 1 is built-in by hydraulic die cushion 2, and this hydraulic die cushion 2 is evenly distributed on hydraulic die cushion hydraulic oil cylinder driving in the workbench by several, and each hydraulic die cushion oil cylinder can be by the hydraulic circuit independence controlled pressure of hydraulic die cushion.Establish slide block 4 directly over the workbench 2, this slide block 4 is by the slide block hydraulic oil cylinder driving that is arranged in the top beam of hydraulic machine, and the hydraulic circuit of slide block oil cylinder is provided with hydraulic cushion oil circuit 5 and quick pressure releasing oil circuit 6, can be referring to Fig. 4.
Hydraulic die cushion oil cylinder in the present embodiment has five, four plunger cases 32 that comprise the piston cylinder 31 at the center of being located at and be evenly distributed on 2 four jiaos of hydraulic die cushions, its hydraulic die cushion hydraulic circuit as shown in Figure 3, mainly comprise prefill valve 33, proportional pressure valve 34, oil pump and fuel tank, the rod chamber of piston cylinder 31 connects oil inlet pipe L1, the rodless cavity of piston cylinder 31 connects oil return pipe L2, the oil pocket of the rodless cavity of piston cylinder 31 and four plunger cases 32 is communicated with fuel tank by a prefill valve 33 respectively, on the oil pocket of the rodless cavity of piston cylinder 31 and four plunger cases 32, be provided with a bypass L3 who is communicated with fuel tank, proportional pressure valve 34 is installed on the bypass L3.
Hydraulic die cushion hydraulic circuit operation principle is: original state, oil return pipe L2 oil-feed, piston cylinder 31 ejects to the upper limit, decline along with slider of hydraulic press, after entering the matched moulds state, hydraulic oil in piston cylinder 31 rodless cavities and the plunger case 32 enter the proportional pressure valve 34 of bypass L3 respectively, and each proportional pressure valve 34 is according to the opening of signal of telecommunication FEEDBACK CONTROL self, thereby realize the pressure control that each cylinder is different.
Slide block oil cylinder in the present embodiment has three, comprise plunger case 51 that is located at the entablature center and the piston cylinder 52 that is located at plunger case 51 both sides, the rod chamber of two-piston cylinder 52 connects the oil inlet pipe L4 of slide block hydraulic oil circuit, its rodless cavity connects oil return pipe L5, and the oil pocket of the rodless cavity of two-piston cylinder 52 and plunger case 51 also is communicated with fuel tank 36 by a prefill valve 53 respectively.
Hydraulic cushion oil circuit 5 is arranged on the oil inlet pipe L4, as shown in Figure 5, it mainly comprises two four-way electromagnetic reversing valves 54, check valve 55, accumulator 56, Solenoid ball valve 57 and check valve 56, two four-way electromagnetic reversing valves 54, check valve 55, accumulator 56, Solenoid ball valve 57 and check valves 58 are serially connected on the oil inlet pipe L4 successively, and establish ratio flow inserted valve 59 between the rod chamber of the oil-out of check valve 56 and piston cylinder 52.
Hydraulic cushion oil circuit 5 operation principles are: when slide block was static, ratio flow inserted valve 59 was closed; Quick when descending when slide block, ratio flow inserted valve 59 must be established by cable according to the signal of telecommunication and open, and its opening amount makes hydraulic oil in piston cylinder 52 rod chambers be discharged by big flow and convert low discharge to that slide block down speed descends gently from large to small.
Quick pressure releasing oil circuit 6 is arranged on the oil return pipe L5, as shown in Figure 6, mainly comprises first plug-in unit 61, second plug-in unit 62, the 3rd plug-in unit 63, the guiding valve 64 that surges, magnetic valve 65.
The structure of three plug-in units is identical, and structure is a techniques well known, repeats no more here, and it all has a, b, three interfaces of c, when interface c does not have pressure, and interface a, b conducting, when interface c had pressure, interface a, b cut off.The latus rectum of first plug-in unit 61 and second plug-in unit 62 is less, and the latus rectum of the 3rd plug-in unit 63 is bigger, and in the present embodiment, the latus rectum of first plug-in unit 61 and second plug-in unit 62 is Dg16, the 3rd plug-in unit latus rectum Dg40.
Specifically being connected to of each parts of quick pressure releasing oil circuit:
The interface a of first plug-in unit 61 takes back oil pipe L5, and interface b is connected with the interface c of the 3rd plug-in unit, and interface c inserts hydraulic efficiency slide valve 64;
The interface a of second plug-in unit 62 takes back oil pipe L5, and interface b inserts fuel tank, and interface c inserts magnetic valve 65; During magnetic valve 65 outage, the interface c of second plug-in unit 62 is connected with oil return pipe L5, during energising,, realizes that the interface c of second plug-in unit 61 has stress-free control its interface c access fuel tank;
The interface a of the 3rd plug-in unit 63 takes back oil pipe L5, and interface b inserts fuel tank, and interface c takes back oil pipe L5 by check valve 66, and interface c inserts hydraulic efficiency slide valve 64;
The pressure feedback mouth of hydraulic efficiency slide valve 64 takes back oil pipe L5, when pressure is big, control the interface c conducting of interface c and the 3rd plug-in unit 63 of first plug-in unit 61, when pressure than hour, the interface c that controls first plug-in unit 61 inserts fuel tank, realizes that the interface c of first plug-in unit 61 has stress-free control.
Quick pressure releasing oil circuit operation principle: during initial pressure release, magnetic valve 65, the interface c of second plug-in unit 61 does not have pressure, the interface a of second plug-in unit 62, b conducting, hydraulic oil in the oil return pipe L5 enters fuel tank by interface a, the interface b of second plug-in unit, and hydraulic oil is discharged fast by little latus rectum second plug-in unit 62 low discharges; At this moment, the interface c of the 3rd plug-in unit 63 has pressure under the effect of check valve 66, and its interface a, b disconnect; Because this moment, the pressure of oil return pipe L5 was bigger, hydraulic efficiency slide valve 64 controls first plug-in unit 61 is connected with the interface c of the 3rd plug-in unit 63, and interface a, the b of first plug-in unit 61 also disconnect;
After the hydraulic fluid pressure of oil return pipe L5 reduces, the interface c of hydraulic efficiency slide valve 64 controls first plug-in unit 61 inserts fuel tank, the interface c that realizes first plug-in unit 61 does not have pressure, the first card i/f a, b conducting, the hydraulic oil of the 3rd card i/f c flows into fuel tank by interface b, the interface a of first plug-in unit 61, interface a, the interface b of second plug-in unit 62, make the 3rd plug-in unit 63 interface c not have pressure, the interface a of the 3rd plug-in unit 63, b conducting, hydraulic oil flows back to fuel tank fast by the 3rd plug-in unit 63 of big latus rectum, makes the in-oil cylinder pressure of slide block release stably rapidly.
Claims (3)
1. a numerical control multi-point blank pressing frame hydraulic press comprises workbench and slide block, and workbench is built-in with hydraulic die cushion, slide block be located at workbench directly over; It is characterized in that: described hydraulic die cushion is evenly distributed on hydraulic die cushion hydraulic oil cylinder driving in the workbench by several, and described each hydraulic die cushion oil cylinder can be by hydraulic die cushion hydraulic circuit independence controlled pressure; Described slide block is by the slide block hydraulic oil cylinder driving, and the hydraulic circuit of slide block oil cylinder is provided with hydraulic cushion oil circuit and quick pressure releasing oil circuit.
2. numerical control multi-point blank pressing frame hydraulic press according to claim 1 is characterized in that: described hydraulic die cushion oil cylinder by the piston cylinder that is located at the hydraulic die cushion center and be evenly distributed on around plunger case form.
3. numerical control multi-point blank pressing frame hydraulic press according to claim 1 is characterized in that: described slide block oil cylinder is made up of plunger case that is located at the entablature center and the piston cylinder that is located at the plunger case both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120064628 CN202021844U (en) | 2011-03-14 | 2011-03-14 | Numerical control multi-point edge-pressing frame hydraulic machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120064628 CN202021844U (en) | 2011-03-14 | 2011-03-14 | Numerical control multi-point edge-pressing frame hydraulic machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202021844U true CN202021844U (en) | 2011-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120064628 Expired - Fee Related CN202021844U (en) | 2011-03-14 | 2011-03-14 | Numerical control multi-point edge-pressing frame hydraulic machine |
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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 |
| CN102641935A (en) * | 2012-05-03 | 2012-08-22 | 山东大王金泰集团有限公司 | Rapid hydraulic press system used for hot-stamping forming of high-strength steel plate |
-
2011
- 2011-03-14 CN CN 201120064628 patent/CN202021844U/en not_active Expired - Fee Related
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 |
| CN102641935A (en) * | 2012-05-03 | 2012-08-22 | 山东大王金泰集团有限公司 | Rapid hydraulic press system used for hot-stamping forming of high-strength steel plate |
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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: 20111102 Termination date: 20200314 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |