US3670552A - Die mounting means - Google Patents

Die mounting means Download PDF

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Publication number
US3670552A
US3670552A US12170A US3670552DA US3670552A US 3670552 A US3670552 A US 3670552A US 12170 A US12170 A US 12170A US 3670552D A US3670552D A US 3670552DA US 3670552 A US3670552 A US 3670552A
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US
United States
Prior art keywords
front platen
die
mounting means
axis
extrusion
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
US12170A
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English (en)
Inventor
Josef Kaspers
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.)
Schloemann AG
Original Assignee
Schloemann AG
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 Schloemann AG filed Critical Schloemann AG
Application granted granted Critical
Publication of US3670552A publication Critical patent/US3670552A/en
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    • 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
    • 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
    • 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

Definitions

  • This invention relates to die mounting means and improvements therein in which a front platen is provided with die mounting means and means for locking the die mounting means with respect to the front platen.
  • the invention is particularly applicable to hydraulic metal and tube extrusion presses in combatting the problem of axial or rotary movement of the die mounting means, such as a rotary arm having provision for mounn'ng two dies only one of which is in an operating position, about an axis parallel to the axis of the press; the rotary arm is rotatably mounted on the front platen.
  • the die mounting means such as a rotary arm having provision for mounn'ng two dies only one of which is in an operating position, about an axis parallel to the axis of the press; the rotary arm is rotatably mounted on the front platen.
  • a shear and saw are arranged for cropping the discard end from the extrusion being provided on the front platen. Either the shear or the saw is used depending on the particular extrusion and its material.
  • the front platen of a metal extrusion press In order to lock the die mounting means in position for preventing axial lifting movements along the axis of the press and rotary movement when the extrusion is sheared or cropped, in the past the front platen of a metal extrusion press has been provided with a bolt which slides in guides extending perpendicularly from the axis of the press.
  • the bolt has a forkshaped head which is located adjacent the die mounting means, which is in a working position with the die, with the forked shaped head engaging with a forked end of the die mounting means so as to prevent a rotary motion.
  • the bolt grips about the die mounting means so as to overlap it and prevent an axial movement with respect to the front platen.
  • This bolt is very heavy in design and is made of out steel. It has the particular disadvantage of taking up a good deal of space at the inner side of the front platen. It is therefore a difficult matter, in the case of metal and tube extrusion presses on whose front platen there is provided both an axial pusher member for the block container and shear and saw devices for cropping the discard end from the extrusion, particularly to arrange the saw device in such a manner that it can cut through the extrusion with a corresponding large saw blade diameter while being easily accessible.
  • a front platen for a hydraulic metal and tube extrusion press having an axis of extrusion, comprising means displaceably mounted on the front platen a die, the fixedly mounn'ng means being being displaceably mounted on the front platen and means for securing the die mounting means to the front platen, the curing means comprising members pivotably mounted on the front platen about an axis extending substantially parallel to the axis of extrusion, the two members being pivotable in opposite rotary directions to engage the die mounting means at opposite sides to secure it with respect to the front platen.
  • the pivotably mounted member comprises a shaft extending parallel to the axis of extrusion, with the shaft being rotatably mounted on the front platen but fixed with respect to its axial direction, and an arm extending substantially parallel thereto providing the engagement portion at its free end.
  • the die mounting means has a forked end having inner faces curved to abut a die, and a locking segment mounted on the forked end so as to engage the die from opposite sides to prevent rotation thereof, and at least one locking segment being arranged to be engaged by the engagement portion of the pivotable locking member.
  • the present invention can provide a locking system for die mounting means, such as a rotary die arm which is located on the front platen and can prevent axial and rotary movement of the rotary die arm, the device requiring less space and being simpler in design than previous devices and, moreover, allowing the saw which is arranged to crop oil the discard from the extrusion to be arranged on the front platen in such a manner as to be easily accesible.
  • die mounting means such as a rotary die arm which is located on the front platen and can prevent axial and rotary movement of the rotary die arm, the device requiring less space and being simpler in design than previous devices and, moreover, allowing the saw which is arranged to crop oil the discard from the extrusion to be arranged on the front platen in such a manner as to be easily accesible.
  • the face of the engagement portion of the pivotable locking member (or members) is preferably circularly convex having a radius extending from the axis about which it is pivotably mounted.
  • the device of the invention is used for locking a rotary arm forming a die mounting means of a metal and tube extrusion press, an axial lifting or a rotary movement can be prevented, and substantially more space is saved than in previous arrangements.
  • the locking means according to the present invention are moreover substantially lighter than the sliding bolt with the supporting block, guide and stay member used hitherto.
  • the locking means are members mounted on shafts to be pivotably movable into abutment against the die mounting means, substantially less power and time is required to effect the locking than is required in the sliding movement of a heavy bolt at right angles to the axis of the press. There is also no longer any need for a brake block.
  • the segment is formed from plates which are releasably secured on the forked ends of the die mounting means at the sidearranged to be nearer a billet container, such that one face overlaps the fork of the die mounting means in a direction towards the die while the other face, which is that adjacent to the locking members has an abutment surface corresponding to that of the locking member, with the fork overlapping the segment in a direction extending away from the die.
  • a die holder can be further secured in the die mounting means of the inwardly overlapping segment so as to be secured against rotation in that the die holder or die is provided on its side adjacent the container with straight butting edges, by means of which they are guided on the straight inner surfaces of the segments so as to be fixed against rotation. With this design, it may no longer be necessary to secure the die holder or die against rotation in the fork of the die mounting means by means of pins or the like.
  • the pivotal movement of the shafts of the locking means, which pass through the front platen can be advantageously caused by drive members acting through levers which are secured so as to be fixed against rotation on the ends of the shafts on the outside of the front platen, with the drive members being pivotally connected of the levers.
  • the drive members can be hydraulically actuated piston and cylinder units articulated to the front platen or on the locking means. The arrangement of the piston and cylinder units on the outside of the front platen removes them from the inside of the container.
  • FIG. 1 is a view of the inside of the front platen of a horizontal hydraulic metal extrusion and tube extrusion press with a saw and shear device located on the front platen and a linkage connecting it to a container drive system; and
  • FIG. 2 is a longitudinal section along the line II-II of FIG. 1 through the front platen and part of the billet container.
  • a front platen l is connected by columns 2 to a cross-head (not shown) of a horizontal metal and tube extrusion press.
  • a two-armed rotary die arm 3 is rotatably mounted on a shaft 4 which is mounted in a horizontal plane extending parallel to the axis of the press, with the rotary die arm 3 being fixable to prevent rotation.
  • ln forked ends 5 of the rotary die arm 3 are secured dies 6, each with a die bolster 7.
  • plate-shaped segments 9 are secured to each of the forked ends 5 by means of bolts 10 and abut against a butting edge 1 l of the rotary die arm in such a manner as to overlap the inner edges of the forked portions of the rotary die arm 3.
  • the segments are set back on the outer edge of the fork.
  • the die 6 has butting edges 6a by means of which it abuts on the straight inner edges of the segments 9 so as to be fixed against rotation.
  • Two shafts 12, which are able to rotate but are axially fixed, are arranged in the front'platen 1 so as to be symmetrical about and parallel to the axis of the press; the ends of these shafts being located on the inside of the front platen are in the form of lever arms 13.
  • These lever arms 13 have on their faces adjacent the segments 9 a convex edge 14 which is circular radiused on the axis of pivoting, by means of which they are able to pivot in to form a lock with the segments 9, simultaneously gripping the forked ends 5 of the rotary die arm.
  • the side of the segments 9 adjacent to the lever arms 13 corresponds to the circular shape of the edge 14 of the lever arms 13.
  • the shafts 12 in the front platen 1 are able to rotate in bearings 15 and 16 but are not able to slide axially and carry on a stub shat! l7 nuts 18 secured thereto. These are fixed against rotation of the stub shafl 17 by means of locking plates 19 which are arranged in a slot in the stub shaft 17 and welded to the nuts 18.
  • Levers 20 are welded to the nuts 18.
  • a piston rod 20 of a hydraulically actuated piston and cylinder unit 22 is articulated to the free ends of these levers 20 while the cylinder of this unit 22 is articulated to the outside of the front platen 1.
  • These piston and cylinder units 22 act, through the shafts 12, to pivot the lever arms 13 into the vicinity of the rotary die arm 3 which is located in extruding position so as to lock it in this position on the front platen 1.
  • Another thrust member 23 is built into the front platen 1 adj'acent the axis of the press and against this there abuts a thrust plate 25 which is secured in a rotary arm 24.
  • a further billet container drive system which is not shown in the drawing is arranged on the front platen 1.
  • Push rods 26 of this drive system which are connected to the container 8, extend through the front platen l.
  • a saw device 27 is arranged between the columns 2 on the front platen 1 so as to be able to slide sideways into the axis of the pressthis saw slides on a slrdeway 28 In a simple manner to crop the discard.
  • lever arms 13 are designed to allow the saw to cut 011' the discard from the extrusion adjacent the die 6 without a pivotal movement.
  • a hydraulically actuated shear 29 which acts vertically with respect to the axis of the press is secured to the front platen 1 by means of a casing 30.
  • a front platen for a hydraulic metal and tube extrusion press having an axis of extrusion comprising means for fixedly mounting a die, said fixedly mounting means being displaceably mounted on the front platen, and means for securing the die mounting means to the front platen, the securing means comprising two members pivotably mounted on the front platen about an axis extending substantially parallel to the axis of extrusion, the two members being pivotable in opposite rotary directions to engage the die mounting means at opposite sides to secure it with respect to the front platen.
  • a front platen for a hydraulic metal and tube extrusion press having an axis of extrusion, comprising means for fixedly mounting a die, said fixedly mounting means being displaceably mounted on the front platen, and means for securing the die mounting means to the front platen, the securing means comprising two members arranged to engage the die mounting means at opposite sides, and at least one of the two members being pivotably mounted on the front platen about an axis extending substantially parallel to the axis of extrusion, whereby the pivotably mounted member is movable to engage the die mounting means to secure it with respect to the front platen, said pivotably mounted member comprising a shaft extending parallel to the axis of extrusion, the shaft being rotatably mounted on the front platen but fixed with respect to its axial direction, and an arm extending substantially parallel thereto providing the engagement portion at its free end.
  • a front platen for a hydraulic metal and tube extrusion press having an axis of extrusion comprising means for fixedly mounting a die, said fixedly mounting means being displaceably mounted on the front platen, and means for securing the die mounting means to the front platen, the securing means comprising two members arranged to engage the die mounting means at opposite sides, and at least one of the two members being pivotably mounted on the front platen about an axis extending substantially parallel to the axis of extrusion, whereby the pivotably mounted member is movable to engage the die mounting means to secure it with respect to the front platen, said die mounting means comprising an arm pivotably mounted on the front platen about an axis extending substantially parallel to the axis of extrusion, and said die mounting means having a forked end having inner faces curved to abut a die, and a locking segment mounted on said forked end so as to engage the die from opposite sides to prevent rotation thereof, and at least one locking segment being arranged to be engaged by the engagement portion of

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Of Metal (AREA)
  • Accessories And Tools For Shearing Machines (AREA)
US12170A 1969-02-21 1970-02-18 Die mounting means Expired - Lifetime US3670552A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691908664 DE1908664A1 (de) 1969-02-21 1969-02-21 Vorrichtung zum Verriegeln eines Matrizendreharmes am Gegenhalter von Metallstrang- und Rohrpressen

Publications (1)

Publication Number Publication Date
US3670552A true US3670552A (en) 1972-06-20

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ID=5725880

Family Applications (1)

Application Number Title Priority Date Filing Date
US12170A Expired - Lifetime US3670552A (en) 1969-02-21 1970-02-18 Die mounting means

Country Status (5)

Country Link
US (1) US3670552A (fr)
JP (1) JPS4940066B1 (fr)
DE (1) DE1908664A1 (fr)
FR (1) FR2032927A5 (fr)
GB (1) GB1282543A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9216536B2 (en) 2014-01-17 2015-12-22 Kolmar Laboratories, Inc. Piston-based extrusion for viscous products
US9653472B2 (en) 2014-08-22 2017-05-16 Samsung Electronics Co., Ltd. Semiconductor device, method of fabricating the semiconductor device, and method of forming epitaxial layer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2728453A (en) * 1951-08-17 1955-12-27 Lake Erie Engineering Corp Extrusion press
US3357226A (en) * 1964-03-19 1967-12-12 Loewy Eng Co Ltd Metal extrusion press with die-assembly locking means

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2728453A (en) * 1951-08-17 1955-12-27 Lake Erie Engineering Corp Extrusion press
US3357226A (en) * 1964-03-19 1967-12-12 Loewy Eng Co Ltd Metal extrusion press with die-assembly locking means

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9216536B2 (en) 2014-01-17 2015-12-22 Kolmar Laboratories, Inc. Piston-based extrusion for viscous products
US9653472B2 (en) 2014-08-22 2017-05-16 Samsung Electronics Co., Ltd. Semiconductor device, method of fabricating the semiconductor device, and method of forming epitaxial layer

Also Published As

Publication number Publication date
DE1908664A1 (de) 1970-09-10
GB1282543A (en) 1972-07-19
FR2032927A5 (fr) 1970-11-27
JPS4940066B1 (fr) 1974-10-30

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