EP0224115B1 - Vorrichtung zum Trennen einer Presscheibe vom Pressrest beim Strangpressen von Metall mit Schale - Google Patents

Vorrichtung zum Trennen einer Presscheibe vom Pressrest beim Strangpressen von Metall mit Schale Download PDF

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Publication number
EP0224115B1
EP0224115B1 EP86115622A EP86115622A EP0224115B1 EP 0224115 B1 EP0224115 B1 EP 0224115B1 EP 86115622 A EP86115622 A EP 86115622A EP 86115622 A EP86115622 A EP 86115622A EP 0224115 B1 EP0224115 B1 EP 0224115B1
Authority
EP
European Patent Office
Prior art keywords
pressure plate
frame
shell
press
stripping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP86115622A
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German (de)
English (en)
French (fr)
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EP0224115A2 (de
EP0224115A3 (en
Inventor
Urban Richardt
Josef Ahrweiler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Hasenclever GmbH
Original Assignee
SMS Hasenclever GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SMS Hasenclever GmbH filed Critical SMS Hasenclever GmbH
Priority to AT86115622T priority Critical patent/ATE62158T1/de
Publication of EP0224115A2 publication Critical patent/EP0224115A2/de
Publication of EP0224115A3 publication Critical patent/EP0224115A3/de
Application granted granted Critical
Publication of EP0224115B1 publication Critical patent/EP0224115B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
    • B21C35/04—Cutting-off or removing waste

Definitions

  • the pressing with shell takes place in particular when using raw heavy metal blocks (copper or brass).
  • the diameter of the pressure plate is so much smaller than the inside diameter of the block receiver that a shell of about 0.5 to 2 mm wall thickness remains in the block receiver on the wall of the bore.
  • the bowl is removed by means of a scraper or ejection disc, also known as a cleaning disc, whose diameter corresponds to that of the sensor bore.
  • a scraper or ejection disc also known as a cleaning disc, whose diameter corresponds to that of the sensor bore.
  • This can either be connected as a scraper disk to the press disk, with a molded neck between the press disk and the scraper disk being dimensioned so that the shell can be accommodated in the free annular chamber as a crimped collar, or the ejection disk can be loaded after pressing a block and by means of the ram in a further ram stroke, the shell is pressed together and ejected.
  • the pressure plate must now be freed of the press residue, the shell pressed out of the shell in the area of the pressure plate, the rest as a ruff around the neck of the pressure plate or behind the pressure plate, and during direct extrusion from the block residue that is no longer pressed exists, while in indirect extrusion the block residue that is no longer pressed is still separated in the press along the face of the die to separate the pressed product (Fachberichte 18 (1980) Issue 10, pp. 951 to 958, Metall 31 (1977) Issue 2, p. 151 to 156).
  • the invention relates to a device for separating a press disk from the pressing residue in direct or indirect extrusion of metal with a shell according to the preamble of claim 1 (DE-A-25 06 447, DE-A-26 13 241).
  • the peeling knives on the sides of the frame opening are shaped and arranged at a distance such that they touch the pressure disks on diametrical surface lines as they are pushed by the ram along the slideway through the frame.
  • the peeling knives should slit the shell or compressed shell on the two diametrically located surface lines so that the remaining shell halves can be detached and removed.
  • the frame is provided with a knife or two knives on the top and / or bottom of the frame opening, in addition to the peeling knives, to the Cut the end faces of the press disk covered by the remainder of the block and, if necessary, the compressed shell (DE-A-1452462, DE-A-25 05 160).
  • the functional reliability required for the desired automation of the process of separating the press disk from the press rest is not achieved by the known press disk separators.
  • a sticking of the press remainder to the press disk or small material connections in the area of radii at the edges of the pressure plate occasionally prevent the perfect separation of the pressure plate from the press rest, so that manual intervention is required. It is the aim of the invention to improve the functionality of the pressure plate separators.
  • the peeling knives can be arranged in the same area as the knives arranged on the top and / or underside of the frame opening in the frame and can be cut simultaneously or shortly after the knives that remove the block residue from the end face of the press disk and, if appropriate, the compressed shell from the rear side Shear off the press disk. This has the advantage that the entire press remnant remains in front of the frame and only scrap removal needs to be provided here.
  • Another possibility is to place the peeling knife behind the knife with the knife to separate the remnant of the block along the end face and, if necessary, to separate the to arrange the compressed shell from the rear side of the press disk provided frame, so that the peeling knives only become effective when the remnant of the block and the compressed shell are safely removed from the press disk and the press disk only has the shell encasing it.
  • This arrangement can be advantageous if materials that have a strong tendency to stick to the pressure plate have to be pressed. Another scrap removal behind the frame is required.
  • peeling of the pressure plate over two large circumferential parts can be sufficient.
  • a further or complete peeling is achieved according to a further feature of the invention in that the peeling mechanism formed from the peeling knives is assigned a device for returning the press disk with the press rest into the starting position and a rotating device, whereby after one pass through the press disk with press rest the peeling mechanism of the press disk and the rest of the press are rotated by an angle of rotation corresponding to the circumferential part which was driven by the peeling knives during the first pass.
  • a particularly simple embodiment of the rotating device consists in that, according to a further feature of the invention, a rotatably mounted plate which is flush with the surface of the slide and which can possibly be driven by a piston-cylinder unit via a ratchet drive is provided.
  • peeling knives, knife carriers and knife carrier guides are designed in such a way that they interact as a link system, through which the peeling knives are guided radially to the press disk in their entire working range. This is achieved in a particularly simple manner according to a further feature of the invention in that the peeling knives are designed with two cutting edges and as a rocker arm with the rocker arm articulated approximately centrally to the two cutting edges on the knife carrier.
  • the knife carrier guides are designed as levers that are structurally simple, reliable and inexpensive, which are pivoted at one end on the frame of the device and at the other end with the carrier of the optionally double-edged peeling knife and a piston-cylinder unit supported on the frame of the device are connected as an adjusting device.
  • a safe back and forth transport of the pressure plate with the press rest through the frame of the device and through the peeling mechanism is achieved according to a further feature of the invention in that the pushing the push plate with the press rest through the frame of the device an oppositely acting for the transport Plunger is assigned for the return transport, the two plungers being able to safely guide the pressing disk with the pressing residue between them.
  • the press disk is only with a pressing residue on its outer surface or on the front side or on both circular surfaces (block residue and possibly compressed shell), so that there is a need to also make a separating cut along the end face and possibly also the rear circular surface, the different axial extension, ie the thickness of the press disk and possibly its neck and the stripper disk in the case of a combined press and scraper disc must be taken into account.
  • the upper yoke of the frame to the lower yoke and thus the passage height in the frame and the distance between the cutting edges of the knives in the lower and upper yoke of the frame is adjustable, and it is the slideway arranged in front of the frame in its height distance adjustable to the cutting edge of the knife in the lower yoke of the frame.
  • the pressing residue shown in FIG. 1A is obtained in a separate operation in the case of direct extrusion with a shell and subsequent ejection of the shell.
  • a block remnant (2) with a stump (2a) of the separated strand remains in front of the press disk (1).
  • the shell (3) created during the pressing process is pressed together after moving the ram and loading an ejection disk (4) in a further advance of the ram and collects as a package behind the press disk (1).
  • shell (3) - two cuts are made along the end face and the rear circular area of the press disk (1) at a distance corresponding to the thickness of the press disk (1) (h 1 ) and removal of the shell (3) sheathing the press disk (1) is required.
  • the pressing residue shown in FIG. 1B was obtained, but using a combined pressing and stripping disk (5), which consists of the actual pressing disk (5a), a neck (5b) and the stripping disk (5c) and can be made in one piece or in several pieces.
  • a block remnant (2) with a stump (2a) of the separated strand remains in front of the press disk (5a).
  • the shell (6) is immediately pressed together during the pressing process by the stripping disk (5c) to form a frill, which surrounds the neck (5b) of the combined pressing and stripping disk (5), the neck (5b) in terms of diameter and length it is dimensioned that the free annular chamber is sufficient to accommodate the crimped shell (6).
  • Indirect extrusion with a shell usually works with a combined press and scraper disc (7), which consists of a press disc (7a), the die (7b) inserted in the press disc (7a) and the scraper disc with the neck (7c) ( 7d). It is customary here to separate the pressed strand (8a) from the remnant of the block (8b) in the press by a cut along the end face of the press disk (7a) with inserted die (7b), so that the press and stripper disk (7) only from the shell (9), which is compressed into a frill around the neck (7c) of the pressing and stripping disk (7), is covered and can be separated from it.
  • the extrusion press (10) equipped for direct pressing is shown in parts, namely a counter beam (11) to a cylinder beam, not shown, which connects the columns (12), one Barrel (13) with press ram (14), a pickup holder (15) with block pickup (16) and a tool slide or tool turret (17).
  • a block (19) and a pressure plate (1) are brought in front of the bore of the block receiver (16) by the block loader (18).
  • Block (19) and press disk (1) are then pushed into the block receiver (16) by the press ram (14), which is moved with the running bar (13), from which the block (19) is then supported by a die supported in the tool slide (17) (21) is pressed.
  • the block pick-up (16) is moved so far against the pressing direction that the extruded strand can be separated from the rest of the block (2) except for a stump (2a) by means of a tool (not shown). It the tool slide (17) is then moved into the axis of the block receiver (16) with the trough (22) provided for receiving a press disk with press residue. So then the press ram (14) is extended, an ejection disc (4) is loaded and with a further stroke of the press ram (14) the shell (3) remaining in the bore of the block receiver (16) is pressed together behind the press washer (1) and the whole Package of block remnants (2), press plate (1), shell (3) and ejection plate (4) from the block receiver and pushed into the trough (22).
  • an ejector (23) pushes the residual press package out of the trough (22) of the tool pusher (17) into a receptacle (25) located at the end of a swivel arm (24).
  • the swivel arm (24) can be swiveled around a bearing (27) into a second position by means of a piston-cylinder unit (26), in which the receiving bushing (25) is coaxial with another ejector (28 ) and a tiltable chute (29).
  • the residual press package transferred from the ejector (28) from the receiving bush (25) into the chute (29) is deposited by tilting the chute (29) onto the slideway (30) of the press disk separator, as can be seen particularly in FIGS. 4 and 7 is.
  • the ejection disc (4) With a second chute (31) which can be tilted in the opposite direction, the ejection disc (4), which is loosely carried in the press residue package, can be behind the frame (32) of the press residue separator stored and fed to a memory.
  • the press disks (1) freed from the rest of the press in the press disk separator are fed - optionally alternating with ejection disks (4) via a roller conveyor (33) and a chute (34) to a channel (35) serving as a store.
  • a press or ejection disc (1) or (4) is separated from the others, rotated by 90 ° by means of a rotating device (37) and then rolled into a rocker (38).
  • the pressure or ejection discs (1) or (4) reach an end position coaxially with the one pivot position of the block loader (18) and furthermore coaxial with a trough (41) for receiving the blocks (19) coming from a furnace (not shown) for pressing and a plunger (42), each of which has a block (19) and then a press disk supplied via the rocker (38) ( 1) or to remove the shell from the block sensor (16) following an extrusion process, an ejection disc (4) is applied to the block loader (18), which is then actuated by a piston-cylinder unit (43) in the bearing (44) and so brings the block (19) with the pressure plate (1) or the ejection plate (4) in front of the bore of the
  • a press remnant package consisting of the press washer (1), the block remnant (2) with stump (2a) and the shell (3) compressed behind the press washer (1) is opened deposited on the frame (32) slideway (30).
  • the slideway (30) has a recess (45) for the stump (2a) of the block remnant (2).
  • the slideway (30) is in the vertical direction by means of an adjusting device (46) adjustable to bring the bearing surface for the press rest at a vertical distance from the cutting edge of a knife (48) inserted into the lower yoke (47) of the frame (32), which corresponds to the thickness of the block rest (2).
  • the cutting edge of an upper knife (50) inserted into an upper yoke (49) of the frame (32) is located at a distance from the cutting edge of the lower knife (48) corresponding to the thickness of the pressing disk (1).
  • a cylinder (52) in which a piston acting on a tappet (53) runs is connected to the frame (32) via tie rods (51). Movable in a guide (54), the plunger (53) is pushed through the opening of the frame (32) into the plunger position (53a).
  • the plunger (53) reaches the plunger position (53a) the pressure plate (1) with the shell (3) encasing it reaches the peeling mechanism.
  • This plunger (55) is carried by a yoke plate (57) connected to guide rods (56) and moved by the piston rod (58) of a piston guided in the cylinder (59). During the further advance through the peeling mechanism, the pressure plate (1) is clamped between the plungers (53) and (55) and guided securely.
  • the peeling mechanism consists of two peeling knives (60) designed as rocker arms and each provided with two cutting edges (60a) and (60b), which are fastened in knife carriers (62) so that they can pivot about bolts (61) .
  • levers (63) are pivotably articulated on the frame (32), while on the other end the lever (63), to which the knife carriers (62) are also fastened, is made of each have a piston-cylinder unit and act on an extension arm (64) of the frame (32) supported adjusting means (65). In the starting position shown in FIG.
  • the peeling knives (60) come into contact with the pressing disk (1) with their cutting edges (60a) and (60b), the cutting edges notching or piercing the shell encasing the pressing disk.
  • the knives (60) move with their cutting edges (60a) and (60b) along the circumference of the press disk (1) and thereby remove the shell (3) until the press disk (1) passes over the in Fig. 9B intermediate position shown in the end position shown in Fig. 9C, wherein each of the peeling knives (60) with their two cutting edges (60a) and (60b) traverses an arc of slightly more than 90 ° on the circumference of the press disk (1) and was thus freed from the shell (3) encasing it.
  • the peeling knives (60) are then lifted off the pressure plate (1), and the pressure plate (1) is pushed back by the plungers (53) and (55) into the starting position according to FIG. 9A, so that it comes to rest on the plate (68) which is rotatable about a pin (66) by a piston-cylinder unit (67).
  • the plungers (53) and (55) are then briefly released and the plate (68) is rotated by the piston-cylinder unit (67) and with it the pressure plate (1) by 90 °.
  • the plunger (53) and (55) and the actuating devices (65) are acted upon again, so that in the second pass the pressure plate (1) also on the remaining circumference is freed from the shell (3) encasing it.
  • the peel residues removed in the peeling plant are placed in a scrap bucket via a slide (69).
  • the remaining parts of the press - blocks (2) and compressed shell (3) - separated from the knives (48) and (50), which remain on the slide (30), are withdrawn via a slide (70) after the plunger (53) has been withdrawn. placed in a scrap bucket.
  • the slideway (30) is tiltably supported and adjustable by a piston-cylinder unit (71).
  • the design of the peeling knife (60) as a rocker arm with two cutting edges (60a) and (60b) and their pivotable mounting in the knife carriers (62) means that the knife edges (60a) and (60b) always adjust radially to the pressure plate (1) . If single-edged peeling knives are used, additional means are required to guide the peeling knives radially to the press disk. An example is shown in FIGS. 10A to 10C, which correspond to the operating positions shown in FIGS. 9A to 9C, the same reference numerals being used for parts having the same effect.
  • the peeling knives (72) are carried by knife carriers (73) which are articulated to the levers (63).
  • a fixed frame (32) with an unchangeable opening can be provided. Is only pressed directly with combined pressure and scraper discs, can on the upper knife (50) in Frame (32) are dispensed with. If only indirect pressing is carried out, the knives (48) and (50) in the frame (32) can be dispensed with, and it is not necessary to design the height of the slideway (30) to open the frame, because the slideway (30) is in this case with the lower edge of the opening of the frame (32) to be arranged at the same height. Otherwise, it is necessary to provide a frame with an adjustable opening, for which FIG. 8 shows an exemplary embodiment.
  • the frame consists of a lower yoke (75) which, together with the legs (76), forms a U-shaped frame part which is closed by a cross member (77).
  • the legs (76) are provided on the inner sides with guides (78) in which an upper yoke (79) is guided so as to be height-adjustable and adjustable by means of adjusting means (80).
  • a knife (81) is inserted into the lower yoke (75) and a knife (82) is inserted into the upper yoke (79).
  • By adjusting the height of the sliding surface (30), its vertical distance (A) to the cutting edge of the lower knife (81) can be adjusted in accordance with the thickness of the block remnant (2).
  • the distance between the cutting edges of the knives (81) and (82) is between a minimum dimension (h) and a maximum dimension (H) to the dimension corresponding to the dimension of the pressure plate - (h1) or (h2) in Figs. 1A and 1B - adjustable.
  • the frame (83) is connected via tie rods (84) to a cylinder (85), from which a plunger (86) is moved, which is a pressing residue deposited on a slideway (87) into the opening of the frame (83), a lower knife (88) in the lower yoke (89) along the end face of a press disk (1) the block remnant (2) and an upper knife (90) in the upper yoke (91) the rear side of the Press plate (1) to separate the pressed shell, which in most cases takes place after a short cutting path.
  • a plunger (86) is moved, which is a pressing residue deposited on a slideway (87) into the opening of the frame (83), a lower knife (88) in the lower yoke (89) along the end face of a press disk (1) the block remnant (2) and an upper knife (90) in the upper yoke (91) the rear side of the Press plate (1) to separate the pressed shell, which in most cases takes place after a short cutting path.
  • double-edged knives (95) which are designed as rocker arms and are pivotably connected to the angle levers (94) by bolts (96), against which are operated via piston-cylinder units (92) and in pivot bearings (93) Press disc (1) with the shell encasing it.
  • the knives (95) move almost the entire circumference of the press disk (1) and remove the shell, so that only in the area of the plunger (86) contact Remaining shell remains, which, however, has as a rule become detached from the press disk (1).
  • the pressure plate (1) is pushed forward by the plunger (86) to such an extent that it reaches the inclined surface (97) on the lower yoke (89) of the frame (93), from where it reaches a collecting channel (not shown) of a store.
  • the separated press residue remains on the slide (87) and is transferred into a scrap bucket by tilting the slide (87).
  • a device according to the exemplary embodiment according to FIGS. 11 and 12 can be followed by a second peeling mechanism, comparable to a peeling mechanism such as the exemplary embodiment according to FIGS 6 and 7 shows.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Of Metal (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
EP86115622A 1985-11-29 1986-11-11 Vorrichtung zum Trennen einer Presscheibe vom Pressrest beim Strangpressen von Metall mit Schale Expired - Lifetime EP0224115B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86115622T ATE62158T1 (de) 1985-11-29 1986-11-11 Vorrichtung zum trennen einer presscheibe vom pressrest beim strangpressen von metall mit schale.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853542237 DE3542237A1 (de) 1985-11-29 1985-11-29 Vorrichtung zum trennen einer pressscheibe vom pressrest beim strangpressen von metall mit schale
DE3542237 1985-11-29

Publications (3)

Publication Number Publication Date
EP0224115A2 EP0224115A2 (de) 1987-06-03
EP0224115A3 EP0224115A3 (en) 1989-02-08
EP0224115B1 true EP0224115B1 (de) 1991-04-03

Family

ID=6287183

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86115622A Expired - Lifetime EP0224115B1 (de) 1985-11-29 1986-11-11 Vorrichtung zum Trennen einer Presscheibe vom Pressrest beim Strangpressen von Metall mit Schale

Country Status (5)

Country Link
US (1) US4745789A (ja)
EP (1) EP0224115B1 (ja)
JP (1) JPS62134112A (ja)
AT (1) ATE62158T1 (ja)
DE (2) DE3542237A1 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6305207B1 (en) 1997-08-22 2001-10-23 Sms Eumuco Gmbh Removing shell and press residue from a metal-extruding ram disk or die
WO2012092923A2 (de) 2011-01-07 2012-07-12 Sms Meer Gmbh Indirekte strangpresse und verfahren zum indirekten strangpressen
DE102013008345A1 (de) 2013-05-16 2014-11-20 Sms Meer Gmbh Verfahren zum Betreiben einer indirekten Strangpresse und indirekte Strangpresse

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5652242A (en) * 1993-03-29 1997-07-29 Zeneca Limited Heterocyclic derivatives
DE10131901A1 (de) * 2001-07-04 2003-01-23 Sms Eumuco Gmbh Preßstempel einer Rohr- und Strangpresse

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3129818A (en) * 1960-02-26 1964-04-21 Schloemann Ag Means for severing from an extruded product a pack expelled by a press ram from the container of a metal extrusion press
DE1452462C3 (de) * 1964-12-01 1975-05-22 Schloemann-Siemag Ag, 4000 Duesseldorf Einrichtung an einer horizontalen Metallstrangpresse zum Entfernen und Trennen des Preßrestpaketes
DE2505160A1 (de) * 1975-02-07 1976-08-19 Diehl Fa Vorrichtung zum entfernen des stirnseitigen pressrestes an strangpresscheiben
FR2300633A1 (fr) * 1975-02-15 1976-09-10 Diehl Dispositif pour detacher la croute de filage d'un poincon de filage combine
DE2613241C3 (de) * 1976-03-27 1979-03-22 Diehl Gmbh & Co, 8500 Nuernberg Vorrichtung zum Entfernen der Preßschale aus einer Preßscheibe für Strang-

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6305207B1 (en) 1997-08-22 2001-10-23 Sms Eumuco Gmbh Removing shell and press residue from a metal-extruding ram disk or die
WO2012092923A2 (de) 2011-01-07 2012-07-12 Sms Meer Gmbh Indirekte strangpresse und verfahren zum indirekten strangpressen
WO2012092923A3 (de) * 2011-01-07 2013-01-24 Sms Meer Gmbh Indirekte strangpresse und verfahren zum indirekten strangpressen
EP2670541B1 (de) * 2011-01-07 2021-04-07 SMS group GmbH Indirekte strangpresse und verfahren zum indirekten strangpressen
DE102013008345A1 (de) 2013-05-16 2014-11-20 Sms Meer Gmbh Verfahren zum Betreiben einer indirekten Strangpresse und indirekte Strangpresse
EP2839893A1 (de) 2013-05-16 2015-02-25 SMS Meer GmbH Verfahren zum Betreiben einer indirekten Strangpresse und indirekte Strangpresse
US9272317B2 (en) 2013-05-16 2016-03-01 Sms Meer Gmbh Method for operation of an indirect extrusion press and an indirect extrusion press

Also Published As

Publication number Publication date
JPH0225685B2 (ja) 1990-06-05
EP0224115A2 (de) 1987-06-03
US4745789A (en) 1988-05-24
DE3678536D1 (de) 1991-05-08
DE3542237A1 (de) 1987-06-04
EP0224115A3 (en) 1989-02-08
JPS62134112A (ja) 1987-06-17
ATE62158T1 (de) 1991-04-15

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