CN102139291A - Synchronous control system of extruding cylinder and extruding plug for reverse extruder - Google Patents
Synchronous control system of extruding cylinder and extruding plug for reverse extruder Download PDFInfo
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- CN102139291A CN102139291A CN 201110075317 CN201110075317A CN102139291A CN 102139291 A CN102139291 A CN 102139291A CN 201110075317 CN201110075317 CN 201110075317 CN 201110075317 A CN201110075317 A CN 201110075317A CN 102139291 A CN102139291 A CN 102139291A
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Abstract
The invention relates to the field of machining, in particular to a synchronous control system of an extruding cylinder and an extruding plug for a reverse extruder. The synchronous control system is characterized by comprising the extruding cylinder, a moving cylinder, the plug and a two-stage back pressure valve, wherein the extruding cylinder and the plug are positioned on the same axis; relative surfaces of the plug and the extruding cylinder are provided with circular protruded stepped surfaces; a circular concave stepped surface corresponding to the circular protruded stepped surface of the plug is arranged in the extruding cylinder; the other end of the circular protruded stepped surface of the plug is coaxially connected with a driving mechanism; an oil cavity of the extruding cylinder is communicated with an oil path of the two-stage back pressure cavity; the driving mechanism drives the plug to move towards the direction of the extruding cylinder, so that the circular protruded stepped surface of the plug is combined with the circular concave stepped surface of the extruding cylinder, and then two-stage back pressure valve applies one inverse force to the extruding cylinder. The synchronous control system is not influenced from the environment and the pressure change of the system and can ensure that the relative movement between the extruding cylinder and the extruding plug is completely avoided.
Description
Technical field
The present invention relates to the machined field, is indirect extrusion machine recipient of using and the synchronous control system that pushes plug.
Background technology
The metal billet of heat must guarantee recipient and push being synchronized with the movement of plug, otherwise may cause in reverse extrusion process: (1) thermometal forms unwarranted charge from the faying face outflow of recipient and plug, makes extrusion process be difficult to proceed; (2) thermometal and recipient inwall produce frictional heating, cause the overheated and recipient inner wall abrasion destruction of extruded product.The recipient of at present external indirect extrusion machine and the Synchronization Control of pushing plug, the electric-hydraulic proportions that adopt are followed control synchronously, the installation position displacement sensor detects the displacement in the unit interval respectively on recipient and extruding plug, and its movement velocity of passing ratio valve regulation, to realize following synchronously, this mode is controlled complexity, cost height, and in actual production process, be subjected to influence that environment temperature and system pressure change greatly, relative accuracy is relatively poor, relative motion can't be eliminated, and frictional heating is difficult to avoid.
Summary of the invention
The objective of the invention is: provide a kind of and can make indirect extrusion machine recipient of using and the synchronous control system that pushes plug, the influence that this synchronous control system is not changed by environment and system pressure can guarantee that recipient and extruding plug do not have relative motion fully.
Technical scheme of the present invention is: recipient that indirect extrusion machine is used and the synchronous control system that pushes plug, it is characterized in that: it comprises recipient, plug, the two-stage counterbalance valve, recipient and plug are on same axis, the opposite face of plug and recipient has the circular protrusions step surface, have in the recipient and the corresponding circular concavity step surface of plug circular protrusions step surface, the other end of plug circular protrusions step surface is connected with driving mechanism is coaxial, recipient is communicated with the oil circuit of two-stage counterbalance valve by the big chamber and the loculus of movable cylinder, the drive mechanism plug moves to the recipient direction, after making plug circular protrusions step surface and the circular concavity step surface of recipient face combining, the two-stage counterbalance valve applies an opposite force by movable cylinder to recipient, opposite force makes the same moved further of plug and recipient less than the driving force of described drive mechanism plug.
Described movable cylinder is connected with two-stage counterbalance valve, feed liquor valve and tapping valve, and feed liquor valve control fluid enters movable cylinder, and tapping valve control fluid is discharged movable cylinder; Feed liquor valve and tapping valve respectively have two groups, and one group communicates with the oil-feed and the oil extraction oil circuit in the big chamber of movable cylinder, and another group communicates with loculus oil-feed and oil extraction oil circuit.
Described plug and recipient are during with moved further, and automatic repairing is carried out by Fill valve in the big chamber of the movable cylinder that is connected with recipient, have prevented that it from inhaling sky and causing seal break-off and can't advance.
Characteristics of the present invention are: the influence that the synchronous control system of recipient that this indirect extrusion machine is used and extruding plug is not changed by environment and system pressure, can guarantee that recipient and extruding plug do not have relative motion fully, have higher precision, and cost is low, simple and convenient.
Description of drawings
The present invention is described further below in conjunction with embodiment.
Fig. 1 is indirect extrusion machine recipient of using and the synchronous control system structural representation that pushes plug.
Among the figure: 1, two-stage counterbalance valve; 2, Fill valve; 3, recipient; 4, plug; 5, feed liquor valve; 6, tapping valve; 7, movable cylinder.
The specific embodiment
As shown in Figure 1, recipient that indirect extrusion machine is used and the synchronous control system that pushes plug, which comprises at least recipient 3 and movable cylinder 7, plug 4, two-stage counterbalance valve 1, recipient 3 and plug 4 are on same axis, plug 4 has the step cutting pattern face with the opposite face of recipient 3, have in the recipient 3 and the corresponding circular concavity step surface of plug 4 circular protrusions step surfaces, the other end of plug 4 circular protrusions step surfaces is connected with driving mechanism is coaxial, recipient 3 communicates with the oil circuit of two-stage counterbalance valve 1 by movable cylinder 7 oil pockets that the rear end connects, drive mechanism plug 4 moves to recipient 3 directions, after making plug 4 circular protrusions step surfaces and recipient 3 circular concavity step surface faces combining, two-stage counterbalance valve 1 control movable cylinder 7 applies an opposite force to recipient 3, and opposite force is less than the driving force of described drive mechanism plug 4.
Recipient 3 is by two or four movable cylinders 7 drivings, steady to guarantee recipient 3 end faces and plug 4, what connect two or four movable cylinders 7 comprises two-stage counterbalance valve 1, feed liquor valve 5 and tapping valve 6, and feed liquor valve 5 control fluid enter recipient 3, and tapping valve 6 control fluid are discharged recipients 3.Feed liquor valve 5 and tapping valve 6 respectively have two groups, and one group communicates with (the opening the chamber) oil-feed of big chamber and the oil extraction oil circuit of movable cylinder 7, and another group communicates with loculus (lock chambers) oil-feed and oil extraction oil circuit.
During work, plug 4 advances and pushes hot billet, and its front end face step and recipient 3 front end faces are fitted, advance thereby promote recipient 3, and plug 4 active movements, recipient 3 is driven.Adjust the two-stage counterbalance valve 1 on the recipient lock chambers oil circuit, reach rational sealing force, prevent to be extruded metal and flow out, also avoided recipient 3 motions faster simultaneously than plug 4 from faying face to guarantee plug 4 and recipient 3 end faces.
Steadily reliable in order to guarantee the opposite force that recipient 3 produces, when plug 4 promoted recipients 3 and moves, recipient was opened the chamber and is carried out automatic repairing by Fill valve 2, had prevented that it from inhaling sky and causing seal break-off and can't advance.Thereby realized the complete Synchronization Control of no relative motion.
When recipient 3 independently movings by the feed liquor valve 5 on its movable cylinder oil circuit and tapping valve 6 realize, oil extraction, two-stage counterbalance valve 1 and Fill valve 2 are inoperative, rapidity and accuracy when not influencing recipient and moving alone.
Recipient 3 is fixedlyed connected with the piston rod of movable cylinder 7; Movable cylinder 7 has two chambeies, is respectively big chamber and loculus, piston nose be big chamber, be loculus in the piston rod, big chamber is connected two oil circuits respectively with loculus, is controlled by a feed liquor valve 5 and a tapping valve 6.
The oil circuit of control movable cylinder 7 is two-stage counterbalance valves 1, on the oil circuit that the big chamber of movable cylinder 7 connects Fill valve 2 is arranged.
Recipient is fixedlyed connected by the oil cylinder piston bar with some oil cylinders, and plug is fixedlyed connected by the oil cylinder plunger with oil cylinder; The oil circuit of oil cylinder is by the lock chambers oil circuit and open the chamber oil circuit and constitute, and every oil circuit is respectively by a feed liquor valve and a tapping valve control; On the lock chambers oil circuit of recipient the two-stage counterbalance valve is arranged, opening on the oil circuit of chamber of recipient has Fill valve.Recipient that this indirect extrusion machine is used and the influence that the synchronous control system that pushes plug is not changed by environment and system pressure can guarantee that recipient and extruding plug do not have relative motion fully, have higher precision, and cost are low, and be simple and convenient.
Claims (3)
1. the synchronous control system of the recipient used of indirect extrusion machine and extruding plug, it is characterized in that: it comprises recipient (3), plug (4), two-stage counterbalance valve (1), recipient (3) and plug (4) are on same axis, plug (4) has the circular protrusions step surface with the opposite face of recipient (3), have in the recipient (3) and the corresponding circular concavity step surface of plug (4) circular protrusions step surface, the other end of plug (4) circular protrusions step surface is connected with driving mechanism is coaxial, recipient (3) is communicated with the oil circuit of two-stage counterbalance valve (1) by the big chamber and the loculus of movable cylinder (7), drive mechanism plug (4) moves to recipient (3) direction, after making plug (4) circular protrusions step surface and the circular concavity step surface of recipient (3) face combining, two-stage counterbalance valve (1) applies an opposite force by movable cylinder (7) to recipient (3), opposite force makes plug (4) and the same moved further of recipient (3) less than the driving force of described drive mechanism plug (4).
2. recipient that indirect extrusion machine according to claim 1 is used and the synchronous control system that pushes plug, it is characterized in that: described movable cylinder (7) is connected with two-stage counterbalance valve (1), feed liquor valve (5) and tapping valve (6), feed liquor valve (5) control fluid enters movable cylinder (7), and tapping valve (6) control fluid is discharged movable cylinder (7); Feed liquor valve (5) and tapping valve (6) respectively have two groups, and one group communicates with the oil-feed and the oil extraction oil circuit in the big chamber of movable cylinder (7), and another group communicates with loculus oil-feed and oil extraction oil circuit.
3. recipient that indirect extrusion machine according to claim 1 is used and the synchronous control system that pushes plug, it is characterized in that: described plug (4) and recipient (3) are during with moved further, automatic repairing is carried out by Fill valve (2) in the big chamber of the movable cylinder (7) that is connected with recipient (3), has prevented that its suction sky from causing seal break-off and can't advance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110075317 CN102139291B (en) | 2011-03-28 | 2011-03-28 | Synchronous control system of extruding cylinder and extruding plug for reverse extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110075317 CN102139291B (en) | 2011-03-28 | 2011-03-28 | Synchronous control system of extruding cylinder and extruding plug for reverse extruder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102139291A true CN102139291A (en) | 2011-08-03 |
| CN102139291B CN102139291B (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110075317 Active CN102139291B (en) | 2011-03-28 | 2011-03-28 | Synchronous control system of extruding cylinder and extruding plug for reverse extruder |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB770871A (en) * | 1952-10-15 | 1957-03-27 | Fielding & Platt Ltd | Improvements in or relating to extrusion apparatus |
| GB2319199A (en) * | 1996-09-19 | 1998-05-20 | Sanyo Special Steel Co Ltd | Die forging system |
| US20090188292A1 (en) * | 2006-08-07 | 2009-07-30 | Felss Gmbh | Device and method for forming a workpiece |
| CN101733301A (en) * | 2009-12-28 | 2010-06-16 | 中国重型机械研究院有限公司 | Method for controlling pin positioning accuracy by seamless tube extrusion locking pin process |
| CN201997564U (en) * | 2011-03-28 | 2011-10-05 | 中国重型机械研究院有限公司 | Synchronous control device for extruding tube and extruding plug for reverse extruding machine |
-
2011
- 2011-03-28 CN CN 201110075317 patent/CN102139291B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB770871A (en) * | 1952-10-15 | 1957-03-27 | Fielding & Platt Ltd | Improvements in or relating to extrusion apparatus |
| GB2319199A (en) * | 1996-09-19 | 1998-05-20 | Sanyo Special Steel Co Ltd | Die forging system |
| US20090188292A1 (en) * | 2006-08-07 | 2009-07-30 | Felss Gmbh | Device and method for forming a workpiece |
| CN101733301A (en) * | 2009-12-28 | 2010-06-16 | 中国重型机械研究院有限公司 | Method for controlling pin positioning accuracy by seamless tube extrusion locking pin process |
| CN201997564U (en) * | 2011-03-28 | 2011-10-05 | 中国重型机械研究院有限公司 | Synchronous control device for extruding tube and extruding plug for reverse extruding machine |
Non-Patent Citations (1)
| Title |
|---|
| 《重型机械》 20110320 董晓娟等 铜合金反向挤压技术应用与研究 10-14 1－3 第卷, 第2期 * |
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| CN102139291B (en) | 2013-03-27 |
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Address after: 710032 No. 209, Dong Yuan Road, Xi'an, Shaanxi Patentee after: China National Heavy Machinery Research Institute Co., Ltd. Address before: 710032 No. 209, Dong Yuan Road, Xi'an, Shaanxi Patentee before: China National Heavy Machinery Research Institute Co., Ltd. |