CN102139291B - 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 PDF

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Publication number
CN102139291B
CN102139291B CN 201110075317 CN201110075317A CN102139291B CN 102139291 B CN102139291 B CN 102139291B CN 201110075317 CN201110075317 CN 201110075317 CN 201110075317 A CN201110075317 A CN 201110075317A CN 102139291 B CN102139291 B CN 102139291B
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CN
China
Prior art keywords
plug
recipient
valve
extruding
movable cylinder
Prior art date
Application number
CN 201110075317
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Chinese (zh)
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CN102139291A (en
Inventor
董晓娟
权晓惠
薛菲菲
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中国重型机械研究院有限公司
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Priority to CN 201110075317 priority Critical patent/CN102139291B/en
Publication of CN102139291A publication Critical patent/CN102139291A/en
Application granted granted Critical
Publication of CN102139291B publication Critical patent/CN102139291B/en

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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

The recipient that indirect extrusion machine is used and the synchronous control system that pushes plug

Technical field

The present invention relates to the machined field, is the 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 the reverse extrusion process: (1) thermometal flows out the formation unwarranted charge from the faying face of recipient and plug, makes extrusion process be difficult to proceed; (2) thermometal and recipient inwall produce frictional heating, cause that the overheated and recipient inner wall abrasion of extruded product destroys.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 is high, and in actual production process, be subjected to the impact of environment temperature and system pressure variation 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 the indirect extrusion machine recipient of using and the synchronous control system that pushes plug, the impact 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: the 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, the circular concavity step surface corresponding with plug circular protrusions step surface arranged in the recipient, 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 large chamber and the loculus of movable cylinder, driving mechanism drives plug and moves to the recipient direction, make plug circular protrusions step surface after the circular concavity step surface of recipient face is combined, the two-stage counterbalance valve applies an opposite force by movable cylinder to recipient, opposite force drives the driving force of plug less than described driving mechanism, make plug and recipient synchronizing moving.

Described movable cylinder is connected with two-stage counterbalance valve, liquid feed valve and tapping valve, and liquid feed valve control fluid enters movable cylinder, and tapping valve control fluid is discharged movable cylinder; Liquid feed valve and tapping valve respectively have two groups, and one group communicates with oil-feed and the oil extraction oil circuit in the large chamber of movable cylinder, and another group communicates with loculus oil-feed and oil extraction oil circuit.

When described plug and recipient synchronizing moving, automatic repairing is carried out by Fill valve in the large chamber of the movable cylinder that is connected with recipient, has prevented that it from inhaling sky and causing seal break-off and can't advance.

Characteristics of the present invention are: the impact that the synchronous control system of the 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 the 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, liquid feed valve; 6, tapping valve; 7, movable cylinder.

The specific embodiment

As shown in Figure 1, the 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, the circular concavity step surface corresponding with plug 4 circular protrusions step surfaces arranged in the recipient 3, 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, driving mechanism drives plug 4 and moves to recipient 3 directions, make plug 4 circular protrusions step surfaces after recipient 3 circular concavity step surface faces are combined, two-stage counterbalance valve 1 control movable cylinder 7 applies an opposite force to recipient 3, and opposite force drives the driving force of plug 4 less than described driving mechanism.

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, liquid feed valve 5 and tapping valve 6, and liquid feed valve 5 control fluid enter recipient 3, and tapping valve 6 control fluid are discharged recipients 3.Liquid feed valve 5 and tapping valve 6 respectively have two groups, and one group communicates with (the opening the chamber) oil-feed of large 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 to guarantee plug 4 and recipient 3 end faces, prevent from being extruded metal and flow out from faying face, also avoided recipient 3 motions faster than plug 4 simultaneously.

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 without relative motion.

When recipient 3 independently moving by the liquid feed 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 affecting recipient and moving alone.

Recipient 3 is fixedly connected with the piston rod of movable cylinder 7; Movable cylinder 7 has two chambeies, is respectively large chamber and loculus, piston nose be large chamber, be loculus in the piston rod, large chamber and loculus respectively connect two oil circuits, are controlled by a liquid feed 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 large chamber of movable cylinder 7 connects Fill valve 2 is arranged.

Recipient is fixedly connected with by cylinder piston rod with some oil cylinders, and plug is fixedly connected with by 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 consist of, and every oil circuit is respectively by a liquid feed 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.The recipient that this indirect extrusion machine is used and the impact 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 (1)

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), the circular concavity step surface corresponding with plug (4) circular protrusions step surface arranged in the recipient (3), 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 large chamber and the loculus of movable cylinder (7), driving mechanism drives plug (4) and moves to recipient (3) direction, make plug (4) circular protrusions step surface after the circular concavity step surface of recipient (3) face is combined, two-stage counterbalance valve (1) applies an opposite force by movable cylinder (7) to recipient (3), opposite force drives the driving force of plug (4) less than described driving mechanism, make plug (4) and recipient (3) synchronizing moving; Described movable cylinder (7) is connected with two-stage counterbalance valve (1), liquid feed valve (5) and tapping valve (6), and liquid feed valve (5) control fluid enters movable cylinder (7), and tapping valve (6) control fluid is discharged movable cylinder (7); Liquid feed valve (5) and tapping valve (6) respectively have two groups, and one group communicates with oil-feed and the oil extraction oil circuit in the large chamber of movable cylinder (7), and another group communicates with loculus oil-feed and oil extraction oil circuit; When described plug (4) and recipient (3) synchronizing moving, automatic repairing is carried out by Fill valve (2) in the large 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.
CN 201110075317 2011-03-28 2011-03-28 Synchronous control system of extruding cylinder and extruding plug for reverse extruder CN102139291B (en)

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

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CN102139291A CN102139291A (en) 2011-08-03
CN102139291B true CN102139291B (en) 2013-03-27

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Citations (4)

* Cited by examiner, † Cited by third party
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
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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101417157B1 (en) * 2006-08-07 2014-07-08 휄쓰 게엠베하 Device and method for forming a workpiece

Patent Citations (4)

* Cited by examiner, † Cited by third party
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
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)

* Cited by examiner, † Cited by third party
Title
董晓娟等.铜合金反向挤压技术应用与研究.《重型机械》.2011,第卷(第2期),10-14. *

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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.