US3867828A - Apparatus for positioning the containers of an extrusion press - Google Patents

Apparatus for positioning the containers of an extrusion press Download PDF

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Publication number
US3867828A
US3867828A US361379A US36137973A US3867828A US 3867828 A US3867828 A US 3867828A US 361379 A US361379 A US 361379A US 36137973 A US36137973 A US 36137973A US 3867828 A US3867828 A US 3867828A
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US
United States
Prior art keywords
piston cylinder
container
containers
station
cylinder assembly
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
US361379A
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English (en)
Inventor
Francis J Kent
Herbert Schmidt
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.)
WEAN INCORPORATED A CORP OF PA
Mitsui Engineering and Shipbuilding Co Ltd
Original Assignee
Wean United Inc
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 Wean United Inc filed Critical Wean United Inc
Priority to US361379A priority Critical patent/US3867828A/en
Priority to GB1987074A priority patent/GB1469548A/en
Priority to CA199,152A priority patent/CA1008803A/en
Priority to DE2423177A priority patent/DE2423177A1/de
Priority to IT50980/74A priority patent/IT1015995B/it
Priority to JP49053803A priority patent/JPS5018344A/ja
Priority to FR7416704A priority patent/FR2229536B1/fr
Application granted granted Critical
Publication of US3867828A publication Critical patent/US3867828A/en
Assigned to PITTSBURGH NATIONAL BANK reassignment PITTSBURGH NATIONAL BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEAN UNITED, INC., A CORP.OF OH
Assigned to PITTSBURGH NATIONAL BANK reassignment PITTSBURGH NATIONAL BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEAN UNITED, INC., A CORP. OH.
Assigned to PITTSBURGH NATIONAL BANK reassignment PITTSBURGH NATIONAL BANK RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). RECORDED ON REEL 4792 Assignors: WEAN UNITED INC./NOW WEAN INCORPORATED PA CORP.
Assigned to MITSUI ENGINEERING & SHIPBUILDING CO., LTD. reassignment MITSUI ENGINEERING & SHIPBUILDING CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: WEAN INCORPORATED, A CORP. OF PA.
Assigned to WEAN INCORPORATED, A CORP. OF PA. reassignment WEAN INCORPORATED, A CORP. OF PA. MERGER (SEE DOCUMENT FOR DETAILS). Assignors: WEAN UNITED, INC., A CORP. OF OHIO
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
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/21—Presses specially adapted for extruding metal
    • B21C23/212—Details

Definitions

  • ABSTRACT The disclosure of this invention pertains to a piston cylinder arrangement for moving and maintaining container assemblies in their various operating positions during the operation of an extrusion press.
  • a single relatively low force exerting piston cylinder assembly is connected to the hub of the container assemblies for moving the containers towards and away from the die assembly, during the period of time that the only resistance to the movement of the containers is that of the sliding assembly friction of the hub and container assemblies.
  • This piston cylinder assembly is connected to a tie-rod crosshead assembly arranged on the side of the platen of the press opposite the die assembly. Operations involving the containers which cannot be carried out without considerable effort, such as sealing the containers to the die assembly and stripping the butt and dummy block are performed by two high force exerting piston cylinder assemblies connected directly to one of the containers itself.
  • both of the rods of each set of piston cylinder assemblies were arranged to butt alternately against the end faces of the containers or their housings, which were retracted prior to the containers being rotated to the next station after the extrusion operation was completed to allow free movement of the containers.
  • the present invention provides a first piston cylinder means designed to furnish only the force necessary to move a container during its nonworking phase or phases of operation, and a second piston cylinder means designed to furnish the required force to move and maintain the container during the working phase or phases of its operation.
  • the present invention provide a first pair of piston cylinder assemblies designed to furnish only the force necessary to overcome the sliding friction inherent in moving the container relative to the die assembly and a pair of second piston cylinder assemblies designed to furnish the required force necessary to effect the sealing of the container of the die assembly of the press, withdrawing the stub, and stripping the butt portion of the extruded member out of the liner of the container.
  • FIG. 1 is an elevational view of the platen end of an extrusion press incorporating the container moving apparatus of the present invention
  • FIG. 2 is a vertical sectional view taken on lines 22 of FIG. 1, and
  • FIG. 3 is an enlarged sectional view of the sealing and stripping piston cylinder assemblies illustrated in FIG. I
  • FIG. 1 there is illustrated the platen end of an horizontal extrusion press I0, the platen being shown at 12, the die assembly at 14, and the container assembly at 16. Also shown is a portion of three of the columns 18 of the press. As best shown in FIG. 2, the container assembly 16 is mounted to rotate concentric about the axis of one of the columns 18, the assembly consisting of a central hub 20 to which at equal circumference distances are secured three billet containers 22, the openings for the billets being designated at 24. In FIG. 2 the container to the right is shown in the extrusion station of the press, as signified by legend, the lower one being in the cleaning station, and the uppermost one in the loading station.
  • the hub 20 is moved around the column 18 so that the container can be rotated from station to station and also so that the container in the extrusion station can be moved axially into its various operative positions, such as the advancing, sealing, withdrawing, and stripping and further withdrawing positions. It is the arrangement of the means and the means themselves for accomplishing these movements of the containers incident to these operations to which the present invention is particularly addressed. It provides for simplifying the designs and insuring economy in performing the container movements by providing two separate piston cylinder assemblies, one a single double action small hydraulic cylinder assembly and the other consisting of two cooperative double acting large hydraulic cylinder assemblies.
  • this cylinder assembly 26 is provided to furnish the motion of the containers which does not require any force other than to overcome the sliding friction inherent in moving the container assembly 16, which as noted, includes the hub 20.
  • the cylinder is secured to the back of the platen 12 having its rod 28 projecting to the right where it is connected to a vertical arranged crosshead 30, the crosshead in turn being secured to two diametrically opposite arranged tie rods 32 which extend into and through the platen 12 where their ends are secured to a second crosshead 34, this head and the rod ends also being illustrated in FIG. 2.
  • the crosshead 34 is rigidly connected to the hub of the container assembly 16. In this way on operation of the piston cylinder assembly 26 the container assembly is moved axially over the column 18 and the container in the extrusion station is moved towards and away from the die assembly 14, where, as noted before, the only force required is to overcome the friction of the relevant parts.
  • the weight of the crosshead 30 is supported by an horizontally extending rail 36 engaged by a wheel 38.
  • FIG. 1 the larger double acting hydraulic piston cylinder assemblies, they also are shown in FIG. 1 at 40, in which as noted in FIG. 2, they are arranged symmetrically or concentrically about the press centerline or the forces generated in the sealing and stripping operations, thereby avoiding any eccentric application of forces which could cause high stresses on the affected elements of the press and wear of sliding surfaces.
  • the cylinder assemblies 40 are secured to the back of the platen 12 having their rod ends 42 extending into and through the platen and beyond the die assembly 14 where they terminate adjacent to the container 22 when in the extrusion station.
  • the ends of the rods 42 of the piston cylinder assemblies 40 are provided with enlarged collars 44 that are received by T-shaped slots 46 formed in each container 22.
  • Each container is actually provided with two brackets 48 arranged symmetrically about its outer periphery, the T-slots being formed on a radius drawn from the center of the column 18 around which the container assembly 16 rotates.
  • the relationship of the slots 46 and the collars 44 is such that with the collars properly positioned they are automatically received in the T-slots by the container being rotated from the loading station to the extrusion station.
  • the large piston cylinder assemblies 40 are employed to supply the various working pressures and movements of the containers such as sealing the container to the die assembly, moving the container away from the die assembly after extrusion while withdrawing the stub of the cut-off extruded rod from the die and stripping the butt out of the liner of the container.
  • auxiliary piston assemblies mounted on the platen 12 to either side of the piston cylinder assembly 26 are two small auxiliary hydraulic piston cylinder assemblies 50, the outer ends of which have adjustable heads 52 and which when extended on operation of the piston cylinder assemblies 50 contact stops 54 secured to the inside of the crosshead 30.
  • the extended positions of the piston cylinder assemblies will place the container assembly 16 into the rotating position including the container 22 in the extrusion station and, more particularly, its T-slot 46 in a selected predetermined position relative to the collars 44 of the piston cylinder assemblies 40.
  • FIG. 3 illustrates one of the piston cylinder assemblies 56 in its extended po- Ill sition against the piston 60, thereby the collar 44 is maintained in the center of the T-slot 46.
  • the piston cylinder assembly 26 is operated to move the container assembly 16 during the socalled non-working movements and non-pressure periods of the press operation, such as the container approach and final withdrawal phases.
  • the piston cylinder assemblies 40 are employed to furnish the working movements and pressure phases, such as, during the sealing and stripping operation and movement phases of the press.
  • the auxiliary piston cylinder assemblies 50 and 56 are operated to properly position the collars 44 of the piston cylinder assembly 40, with respect to the T-shaped slots 46 of the container 22 that is to be rotated away from the press station and the next container 22 that is to be brought into the press station.
  • a press having a number of containers adapted to be selectively brought to and from a pressing station of the press and wherein a container in said station has a number of working and non-working phases
  • a first hydraulic piston cylinder means connected to said containers capable of furnishing only the force necessary to move the containers when a container in said station is in a non-working phase or phases of operation
  • a second hydraulic piston cylinder means connectable to said container in said station capable of furnishing the required force to move and maintain the container in said station during its working phase or phases of operation and capable of furnishing a substantially greater pressure than first said piston cylinder means
  • said second piston cylinder assembly means having means for registry with the container registry means when a container is in said station
  • said predetermined positions being such that a proper registry is made between said registry means of said container and of said second piston cylinder assembly means when a container is brought to said station.
  • said registry means of said second piston cylinder assembly means including a collar formed on the ends of its piston rod.
  • said first positioning means includes a piston cylinder assembly constructed and arranged to control the extent of movement of the working stroke of the said first piston cylinder assembly means and wherein said second positioning means includes a piston cylinder assembly consaid pressing station, means for mounting said hub concentric with one of said columns, means for mounting said first piston cylinder assembly means on or symmetrically about said one column, and means for mounting second piston cylinder assembly means on or symmetrically about said pressing axis

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Extrusion Of Metal (AREA)
  • Special Conveying (AREA)
US361379A 1973-05-14 1973-05-14 Apparatus for positioning the containers of an extrusion press Expired - Lifetime US3867828A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US361379A US3867828A (en) 1973-05-14 1973-05-14 Apparatus for positioning the containers of an extrusion press
GB1987074A GB1469548A (en) 1973-05-14 1974-05-06 Extrusion press
CA199,152A CA1008803A (en) 1973-05-14 1974-05-07 Apparatus for positioning the containers of an extrusion press
DE2423177A DE2423177A1 (de) 1973-05-14 1974-05-13 Vorrichtung zum einstellen und ausrichten der behaelter einer extrusionspresse
JP49053803A JPS5018344A (ja) 1973-05-14 1974-05-14
FR7416704A FR2229536B1 (ja) 1973-05-14 1974-05-14
IT50980/74A IT1015995B (it) 1973-05-14 1974-05-14 Apparecchio per posizionare i contenitori di una pressa per estrusione

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US361379A US3867828A (en) 1973-05-14 1973-05-14 Apparatus for positioning the containers of an extrusion press

Publications (1)

Publication Number Publication Date
US3867828A true US3867828A (en) 1975-02-25

Family

ID=23421790

Family Applications (1)

Application Number Title Priority Date Filing Date
US361379A Expired - Lifetime US3867828A (en) 1973-05-14 1973-05-14 Apparatus for positioning the containers of an extrusion press

Country Status (7)

Country Link
US (1) US3867828A (ja)
JP (1) JPS5018344A (ja)
CA (1) CA1008803A (ja)
DE (1) DE2423177A1 (ja)
FR (1) FR2229536B1 (ja)
GB (1) GB1469548A (ja)
IT (1) IT1015995B (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4781053A (en) * 1986-03-05 1988-11-01 Stewart Charles L Indirect extrusion process and machinery therefor
US5445004A (en) * 1993-11-24 1995-08-29 Breda Danieli Extrusion Extrusion method with gas evacuation, and extrusion press

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5773449A (en) * 1980-10-23 1982-05-08 Canon Inc Light pen input device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2751076A (en) * 1953-02-16 1956-06-19 Daniel L Lombard Extrusion press installation
US2778495A (en) * 1953-03-09 1957-01-22 Baldwin Lima Hamilton Corp Extrusion press
US3182479A (en) * 1961-11-07 1965-05-11 Loewy Eng Co Ltd Extrusion press with twin containers
US3182478A (en) * 1962-07-09 1965-05-11 Kobe Steel Ltd Hydraulic metal extruding machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2751076A (en) * 1953-02-16 1956-06-19 Daniel L Lombard Extrusion press installation
US2778495A (en) * 1953-03-09 1957-01-22 Baldwin Lima Hamilton Corp Extrusion press
US3182479A (en) * 1961-11-07 1965-05-11 Loewy Eng Co Ltd Extrusion press with twin containers
US3182478A (en) * 1962-07-09 1965-05-11 Kobe Steel Ltd Hydraulic metal extruding machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4781053A (en) * 1986-03-05 1988-11-01 Stewart Charles L Indirect extrusion process and machinery therefor
US5445004A (en) * 1993-11-24 1995-08-29 Breda Danieli Extrusion Extrusion method with gas evacuation, and extrusion press

Also Published As

Publication number Publication date
GB1469548A (en) 1977-04-06
FR2229536A1 (ja) 1974-12-13
JPS5018344A (ja) 1975-02-26
DE2423177A1 (de) 1974-12-05
FR2229536B1 (ja) 1979-05-11
CA1008803A (en) 1977-04-19
IT1015995B (it) 1977-05-20

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Legal Events

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AS Assignment

Owner name: PITTSBURGH NATIONAL BANK

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP.OF OH;REEL/FRAME:004458/0765

Effective date: 19850610

AS Assignment

Owner name: PITTSBURGH NATIONAL BANK

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP. OH.;REEL/FRAME:004792/0307

Effective date: 19860630

Owner name: PITTSBURGH NATIONAL BANK,PENNSYLVANIA

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP. OH.;REEL/FRAME:004792/0307

Effective date: 19860630

AS Assignment

Owner name: PITTSBURGH NATIONAL BANK

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:WEAN UNITED INC./NOW WEAN INCORPORATED PA CORP.;REEL/FRAME:005004/0152

Effective date: 19881013

AS Assignment

Owner name: WEAN INCORPORATED, A CORP. OF PA., PENNSYLVANIA

Free format text: MERGER;ASSIGNOR:WEAN UNITED, INC., A CORP. OF OHIO;REEL/FRAME:005208/0358

Effective date: 19890804

Owner name: MITSUI ENGINEERING & SHIPBUILDING CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:WEAN INCORPORATED, A CORP. OF PA.;REEL/FRAME:005208/0359

Effective date: 19890803