WO2012034554A2 - Strangpresse sowie verfahren zum kontinuierlichen pressen von metall - Google Patents
Strangpresse sowie verfahren zum kontinuierlichen pressen von metall Download PDFInfo
- Publication number
- WO2012034554A2 WO2012034554A2 PCT/DE2011/001698 DE2011001698W WO2012034554A2 WO 2012034554 A2 WO2012034554 A2 WO 2012034554A2 DE 2011001698 W DE2011001698 W DE 2011001698W WO 2012034554 A2 WO2012034554 A2 WO 2012034554A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gegenpressplunger
- extruder
- pressed
- die
- pressed material
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/005—Continuous extrusion starting from solid state material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/21—Presses specially adapted for extruding metal
- B21C23/212—Details
- B21C23/214—Devices for changing die or container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C33/00—Feeding extrusion presses with metal to be extruded ; Loading the dummy block
- B21C33/006—Consecutive billets, e.g. billet profiles allowing air expulsion or bonding of billets
Definitions
- the invention relates to an extrusion press and to a process for the continuous pressing of metal.
- DE 16 02 269 discloses a continuous, upright extrusion press with a main press plunger acting with a receiver, with a counterpressure plunger and with a storage space for metallic pressed material, which can be shut off on the one hand via a valve actuated by the pressed material and on the other hand is operatively connected to the Gegenpressplunger, wherein the cross section of the storage space is chosen to be greater than the cross section of the pickup in order to ensure the most continuous strand outlet speed can.
- the Hauptpressplunger possibly in one piece with a main punch, which directly exerts compressive pressure on the pressed material can be formed. It is also conceivable that this can be done indirectly, for example, by the Hauptpressplunger indirectly drives a main ram.
- the Schmidtpressplunger which, for example, can act directly on a counterpressive punch, which in turn acts on the pressed material, for example in the storage space, which also Schmidtpressplunger and counterpressure punches can be integrally formed.
- the Gegenpressplunger can also act indirectly, in particular on the pressed material in the storage space by the Martinezpressplunger correspondingly drives a die or other walls of the storage space, such as a wall of a storage ram or a valve seat or the valve itself, and exerts a pressure on the pressed material ,
- valve does not necessarily have to be fully actuated by the pressed material. Rather, the valve can be externally triggered or actuated, as long as the pressed material acts at least partially supportive. Accordingly, it is particularly advantageous if an automatic, so actuated by the pressed material, valve is used, but also a positively controlled valve can be used as long as the pressed material supports the predetermined by the positive control movement accordingly.
- valve body arranged in the valve body can thus be opened in an optimal design with a maximum flow cross-section, which is preferably completely flows around in a suitable embodiment of this feature due to a coaxial arrangement to the valve channel of the pressed material.
- a continuously operating extrusion press with a main press plunger acting in a receiver, with a counterpressure plunger and with a storage space for metallic Pressgut on the one hand shut-off with the transducer and on the other hand operatively connected to the Schmidtpressplunger proposed, in which both the Hauptpressplunger and the Gegenpressplunger and the pressed material to be moved horizontally and which is characterized in that to shut off a valve with a valve in a channel arranged valve body is provided, which is pressed by a pressure of the metallic pressed material against a valve seat.
- valve body is flowed around by the pressed material, but also when in a further advantageous embodiment of the extruder, the valve has a valve drive for the valve body.
- a valvetrain can be used, for example, for a partial positive control of the valve so that the closing process caused by the pressure of the Gegenpressplungers is supported by a mechanical and / or electrical actuator to achieve a fast closing of the valve and thus a uniform pressing speed of the material to be pressed ,
- a continuously operating extruder with an effective in a pickup Hauptpressplunger, with a Jacobpressplunger and with a Storage space for metallic pressed material which is on the one hand shut-off operatively connected to a master cylinder and on the other hand with the Gegenpressplunger proposed, which is characterized in that the Schmidtpressplunger is a hollow die and is arranged in a ring cylinder.
- the pressure can be applied very evenly to the Schmidtpressplunger, although this is structurally not easy to implement, since no standard components, such as standard piston-cylinder units, can be used.
- the pressure and / or volume ratios in main and counter-cylinders can be approximated to each other in a structurally simple manner, whereby a uniform mass flow of the pressed material can be relatively easily ensured in particular also control technology.
- the extruder is located so that both the Hauptpressplunger and the Gegenpressplunger and the pressed material to be pressed are moved horizontally. This makes it possible, inter alia, that the pressed material unhindered, especially continuously deduct.
- the counterpressure plunger and the main compression plunger are coaxially arranged. This allows a uniform pressing, especially without changing the direction of material flow, which could adversely affect the uniformity of the pressed strand.
- the die of an extrusion press in turn can additionally drive a storage ram.
- This Speicherstempei which ensures the continuous pressing under volume reduction of the storage space in this embodiment, is preferably designed as a hollow die to operate through this cavity through the die with pressed material.
- the storage ram in turn can be driven by an additional punch, which is preferably driven by additional piston or designed as an additional piston, against the action of the Schmidtpressplungers.
- additional punch which is preferably driven by additional piston or designed as an additional piston, against the action of the Schmidtpressplungers.
- This opposite of the Gegenpressplungers acting direction of the additional punch leads to further structural simplification of the Schmidtplungers or its counter-cylinder, as can be dispensed with a doppelw irkenden piston on the one hand in the counter cylinder and on the other hand, subsequent to the female assemblies only by pressure and not by train within the Extruder be relocated. It is immediately apparent that arranged axially along a pressing direction assemblies between the Schmidtpressplunger and the additional punch can not be arranged positively but not positively in the pressing direction.
- a continuously operating extruder with an effective in a transducer Hauptpressplunger, with a, preferably hollow, Gegenpressplunger and with a storage space for metallic pressed material, the on the one hand shut off with the transducer and on the other hand with the Schmidtpressplunger operatively connected proposed, in which both the Hauptpressplunger and the Gegenpressplunger are arranged on a common pressing frame and which is characterized in that the pressing frame between the Hauptpressplunger and the Gegenpressplunger has a building fixed bearing.
- This embodiment makes it possible to reduce the relative stretching movement of the pressing frame with respect to the bearing point, whereby, in a suitable embodiment, in particular in a horizontal extruder, any disturbances in the movement, which could be caused by such a stretching movement, can be reduced. This then has a positive effect on the pressed material. Furthermore, it can also be provided in an extruder that the Schmidtpressplunger, Hauptpressplunger and / or driven by the Hauptpressplunger main ram or a driven by the Schmidtpressplunger Gegenpress- or storage ram are arranged coaxially to each other. As can be seen immediately, pressing forces in coaxial assemblies - this may include above all the die, the valve and the storage space - evenly distributed both on the pressed material and on the common pressing frame, resulting in a particularly good quality in the forming of the Press good results.
- the pressing speed of a continuous extruder remains constant, by evacuating the degree of contamination of the material to be pressed can be minimized cumulatively or alternatively to a valve actuation, in particular by any residues on the surface of the extruder fed blocks, spoiling air residues between the extruder fed blocks and the transducer and / or if the Extruded blocks include inclusions, such as air inluding.
- means for speed measurement and / or means for measuring the temperature of the pressed material can be arranged, whereby the quality of the material to be pressed on the one hand and on the other hand actively influenced by interventions in the control or regulation of the extruder can be.
- a furnace used for preheating material blocks or other heating, for example, for a die, the storage space and / or the transducer to be controlled or regulated by the aforementioned temperature measurement to always supply blocks of material with a constant temperature of the extruder or To temper the material as uniform as possible.
- means for temperature or speed measurement can also be provided at another suitable location. This can be provided on the receiver, on the die or in the storage space.
- means for speed measurement and or means for measuring the temperature of the pressed material to be pressed are arranged in the spacer.
- an extruder with a cassette holder when the cassette holder is designed as a slide with at least two holders for each cassette, wherein the distance between the two holders is selected such that one of the two Mounts is located in a unloading and loading position when the other of the two brackets is in a working position. This allows a particularly compact and space-saving design of the cassette holder.
- the cassette holder a preferably horizontally displaceable slide, so that a secure guidance of the corresponding components of the cassette holder is ensured.
- the said "working position" is, as immediately apparent, the position in which the die is aligned coaxially with the main press plunger and / or the counterpressure plunger or is in direct spatial relationship with the storage space or the receiver Tool changer in any other embodiment, such as a robot arm, wherein simultaneous unloading and loading of a tool assembly is possible.
- the tool assembly is usually made of the die and at least one die holder Spacer, the storage stamp or similar with the matrix operatively connected components to change.
- a method for continuous pressing is proposed for achieving the above-mentioned object, which is characterized in that the material to be pressed is fed at a constant speed to a die of an extrusion press.
- a "cycle" in an extrusion press usually consists of loading the extrusion press with a block of material, pressing it and returning the press die or plunger used for pressing in order to feed another block of material to the extrusion press
- the press speed drops, so that is expected to change material properties of the material to be pressed
- the constant speed of the material it is immediately apparent that during a transition to a second press cycle, the constant speed of the material to
- the term “constant” encompasses a maximum variation of the respective size of ⁇ 15%, preferably ⁇ 10%. Likewise, the term “constant” encompasses the respective local size and not just a global size over the material to be compacted.
- the temporal constancy with respect to a fixed position relative to the die or relative to the extruder is meant, wherein the speed or the temperature of a material to be pressed along a pressing axis may well have a gradient.
- Figure 1 shows a schematic cross section through a continuous extruder
- Figure 2 is a front view of the extruder of Figure 1 in the direction A-A in Figure 1;
- FIG. 3 shows a section through the extrusion press according to FIGS. 1 and 2 along the line B--
- Figure 4 is a partially broken plan view of the extruder of Figures 1 to
- Figure 5 is a first perspective view of the extruder of Figures 1 to 4.
- FIGS. 1 to 5 shows a second perspective view of the extruder according to FIGS. 1 to 5.
- An extrusion press 1 designed according to FIG. 1 has a press frame 2, which is fastened via a building-fixed bearing 3 to a foundation (not shown). To further support the extruder 1 further floating bearing 4 are arranged on the press frame 2 in the axial direction in front of and behind the building fixed bearing.
- the building-fixed bearing 3 located in the press frame 2 of the extrusion press 1 separates this extrusion press 1 essentially in two main components, wherein, according to FIG. 1, on the right side, opposite to the pressing direction, a main press plunger 12 with a main punch 14 and on the left side, in the pressing direction, a counterpressure plunger 33 are arranged.
- a receiver 15 in which pressed material, in this case preferably cylindrical aluminum blocks, can be inserted.
- the pressed material is first inserted into the receptacle 15 via the main punch 14 located on the main presser 12.
- About a master cylinder 1 1 and the Hauptpressplunger 12 is moved by hydraulic pressure of the main punch 14 against the pressed material, wherein the pressed material, which has been previously heated in an oven, is transferred via a valve 16 in a storage tool 21 and a storage ram 22.
- sprue pressure increase at the main ram 14 the pressed material flows through a die 23, where it is finally subjected to forming and leaves as a finished profile via an outlet 34, the extruder 1.
- the main ram 14 can be moved out of the receiver 15 via a front and rear hoist 13.
- a counter-cylinder 33 traveling against the pressed material, a continuous extrusion of a strand is ensured in that time is gained in this process step to feed new material to the extruder 1, with the actual pressing or forming on the die 23 under a constant pressing speed can be continued
- the valve 16 is closed during pressing via the counterpressure plunger 33, since it is actuated by the pressure of the material to be pressed in the storage space, and prevents a backflow of material to be pressed into the receiver 15.
- a bearing stamper concerns 22 on the valve 16 while the storage space 22 reaches its minimum, another pressing cycle begins under the operation of Hauptpressplungers 12.
- the main punch 14 has been driven because of the continuous pressing operation with the aid of Gegenpressplungers 33 from the pickup 15, a new Material block inserted in the transducer 15.
- the main press die 14 presses the newly inserted material block via the valve 16 into the storage space 24, as has already happened in the first cycle. Meanwhile, however, the storage ram 22 must also be driven in the pressing direction to release a new storage volume for the second cycle.
- the assembly comprising the Schmidtpressplunger 33 further consists of a spacer 31, a Tool holder 41 and the die 23, the storage ram 22 and the outlet 34.
- the front and back wood cylinder 13 in this case allows a faster displacement of Hauptpressplungers 12 and the main ram 14 both in a return movement after the main ram 14 was moved into the pickup 15, as even with a forward movement until the main ram 14 reaches a newly introduced into the pickup 15 block, wherein, when the block is reached, the pressing forces through the Hauptpressplunger 12 and a corresponding pressure in the master cylinder 1 1 are applied.
- the valve 16 consists of an ordinary non-return valve which opens in the pressing direction and closes in the opposite direction.
- the press material previously heated for pressing in particular when it comes to metals such as aluminum, copper or brass, has good flow properties at such temperatures.
- the temperature of the material to be pressed used for pressing also causes no seams on the finished pressed extruded profile arise even after re-inserting pressed material for continuous pressing, since during flow through the valve 16 and through the storage space 24, a partial mixing of the pressed-in new material with the already located in the extruder 1 pressing material takes place.
- the tool holder 41 of the extrusion press 1 is, as can be seen in FIGS. 2 and 3, displaceably arranged on a horizontal, middle plane.
- the die 23 is enclosed and exchangeable over the equipped with a slide 45 tool holder 41 under very short set-up times.
- the replacement of a die 23 takes place here by inserting a second die or a second cassette in an unoccupied cassette holder 44 of the tool holder 41 which at standstill of the extruder 1 of the tool holder 41 moves over the carriage 45 in the horizontal and inserted into the cassette holder 44 new die is placed in operating position.
- the slide cylinders are each double-acting cylinders.
- the carriage cylinder 46 can be operated pneumatically or electrically, which can be used in a design as a hydraulic cylinder because of the already existing hydraulic circuits of the master cylinder 1 1 and the counter-cylinder 32 with little additional effort for the carriage cylinder 46.
- the master cylinder 1 1, the die 23 but also the counter-cylinder 32 are aligned coaxially.
- the pressing frame 2 of the extruder 1 is arranged with its struts in a radially constant distance from a main axis of the extruder 1.
- the arrangement of the cassette holder 44 in the tool holder 41 illustrates the particular advantages of the tool holder 41 used, since in the lateral region of the extruder 1, in particular during the operation of the extruder I, enough space for the exchange of both a cassette 43 and a Die 23 is present.
- the plan view of the extruder 1 of Figure 4 further illustrates the available space, with a cassette 43 to be replaced including die 23 axially without interference, for example by the press frame 2, can be introduced into the tool holder 41 in a simple manner.
- a the storage ram 22 supporting cross member 49 by means of connected to this Traverse 49 additional cylinder 47 axially from the die 23 against the pressing direction wegatti or pressed after changing the die 23 back to the same.
- Additional piston 48 of the additional cylinder 47 are aligned parallel to the main axis of the extruder 1 for this purpose.
- auxiliary piston 48 are used in this embodiment also to push the Gegenpressplunger 33 back to its original position in order to go through a new cycle can, in a modification by the pressure of the pressed material, which this of the Hauptpressplunger 12 and the Main stamp 14 gets impressed, the Schmidtpressplunger 33 can be brought to its original position.
- the overall order of the extruder 1 with an associated tool changer 42, the master cylinder 11 and the counter cylinder 32 is particularly clear from the perspective views of Figures 5 and 6.
- the tool holder 41 is part of the tool changer 42, which includes the tool holder 41 and receptacles for the carriage cylinder 46.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201180054621.2A CN103209778B (zh) | 2010-09-14 | 2011-09-08 | 用于金属的连续挤压的方法以及挤压机 |
DE112011104205T DE112011104205A5 (de) | 2010-09-14 | 2011-09-08 | Strangpresse sowie Verfahren zum kontinuierlichen Pressen von Metall |
EP11785297.0A EP2616195B1 (de) | 2010-09-14 | 2011-09-08 | Strangpresse zum kontinuierlichen pressen von metall |
ES11785297T ES2704004T3 (es) | 2010-09-14 | 2011-09-08 | Prensa de extrusión para la extrusión continua de metal |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010045276.9 | 2010-09-14 | ||
DE102010045276 | 2010-09-14 | ||
DE102011012760.7 | 2011-03-01 | ||
DE201110012760 DE102011012760A1 (de) | 2010-09-14 | 2011-03-01 | Strangpresse sowie Verfahren zum kontinuierlichen Pressen von Metall |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2012034554A2 true WO2012034554A2 (de) | 2012-03-22 |
WO2012034554A3 WO2012034554A3 (de) | 2012-07-05 |
Family
ID=45756204
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2011/001698 WO2012034554A2 (de) | 2010-09-14 | 2011-09-08 | Strangpresse sowie verfahren zum kontinuierlichen pressen von metall |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2616195B1 (de) |
CN (1) | CN103209778B (de) |
DE (2) | DE102011012760A1 (de) |
ES (1) | ES2704004T3 (de) |
WO (1) | WO2012034554A2 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013015446A1 (de) | 2013-09-18 | 2015-03-19 | Ulrich Bruhnke | Strangpresse |
LU92917B1 (de) * | 2015-12-17 | 2017-06-19 | Sms Group Gmbh | Strang- und Rohrpresse bzw. Metallstrangpresse |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1602269A1 (de) | 1967-04-29 | 1970-05-06 | Hydraulik Gmbh | Kontinuierlich arbeitende Strangpresse mit nachladbarem,absperrbarem,gesteuert bewegbarem Aufnehmer |
DE2709890C3 (de) | 1977-03-08 | 1980-02-21 | Mannesmann Demag Ag, 4100 Duisburg |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB643990A (en) * | 1942-11-28 | 1950-10-04 | Vladimir Vltavsky | Improvements in or relating to extrusion apparatus for producing cable insulation, profiles, rods, threads and the like, from plastic materials |
GB821909A (en) * | 1956-09-14 | 1959-10-14 | Hydraulik Gmbh | Cable-sheathing press |
US2964177A (en) * | 1959-07-02 | 1960-12-13 | Albert W Scribner | Continuous extrusion |
US3224240A (en) * | 1960-09-20 | 1965-12-21 | Muller Ernst | Method of extruding |
JPS60106618A (ja) * | 1983-11-14 | 1985-06-12 | Ube Ind Ltd | 押出プレスのダイス交換装置 |
CN85103797B (zh) * | 1985-05-14 | 1988-11-02 | 宇部兴产株式会社 | 用于挤压机的模具更换装置 |
CN1017973B (zh) * | 1990-05-05 | 1992-08-26 | 马子策 | 摩擦-挤压法及其摩擦挤压机 |
JPH105852A (ja) * | 1996-06-20 | 1998-01-13 | Mitsui Eng & Shipbuild Co Ltd | 押出加工方法および押出加工装置 |
EP1632295A1 (de) * | 2004-09-06 | 2006-03-08 | Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek TNO | Strangpressen von Metall |
CN201008897Y (zh) * | 2007-01-18 | 2008-01-23 | 黎永伦 | 一种铜、铝型材挤压机的自动换模装置 |
CN100450654C (zh) * | 2007-02-14 | 2009-01-14 | 哈尔滨工业大学 | 镁合金丝材或棒材温静液挤压制造方法及其挤压模具 |
CN101670385B (zh) * | 2009-08-31 | 2011-01-19 | 哈尔滨工业大学 | 一种脉冲电流辅助挤压成形装置及挤压成形方法 |
-
2011
- 2011-03-01 DE DE201110012760 patent/DE102011012760A1/de not_active Withdrawn
- 2011-09-08 ES ES11785297T patent/ES2704004T3/es active Active
- 2011-09-08 DE DE112011104205T patent/DE112011104205A5/de active Pending
- 2011-09-08 CN CN201180054621.2A patent/CN103209778B/zh active Active
- 2011-09-08 EP EP11785297.0A patent/EP2616195B1/de active Active
- 2011-09-08 WO PCT/DE2011/001698 patent/WO2012034554A2/de active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1602269A1 (de) | 1967-04-29 | 1970-05-06 | Hydraulik Gmbh | Kontinuierlich arbeitende Strangpresse mit nachladbarem,absperrbarem,gesteuert bewegbarem Aufnehmer |
DE2709890C3 (de) | 1977-03-08 | 1980-02-21 | Mannesmann Demag Ag, 4100 Duisburg |
Also Published As
Publication number | Publication date |
---|---|
DE102011012760A1 (de) | 2012-03-15 |
CN103209778A (zh) | 2013-07-17 |
EP2616195A2 (de) | 2013-07-24 |
WO2012034554A3 (de) | 2012-07-05 |
DE112011104205A5 (de) | 2013-09-26 |
CN103209778B (zh) | 2016-03-16 |
ES2704004T3 (es) | 2019-03-13 |
EP2616195B1 (de) | 2018-11-07 |
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