US3665849A - Horizontal press for compacting scrap metal - Google Patents

Horizontal press for compacting scrap metal Download PDF

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Publication number
US3665849A
US3665849A US17502A US3665849DA US3665849A US 3665849 A US3665849 A US 3665849A US 17502 A US17502 A US 17502A US 3665849D A US3665849D A US 3665849DA US 3665849 A US3665849 A US 3665849A
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US
United States
Prior art keywords
piston
base element
mobile cylinder
movable
cylinder
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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
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US17502A
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English (en)
Inventor
Angelo Muraro
Giovanni Busi
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Individual
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Individual
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Publication date
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Publication of US3665849A publication Critical patent/US3665849A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/32—Presses specially adapted for particular purposes for consolidating scrap metal or for compacting used cars

Definitions

  • a hydraulically actuated horizontal press for compacting scrap metal which comprises an elongated chamber for loading, a movable cylinder with a base element connected thereto through a movable piston.
  • the compression occurs in stages by advancing under pressure first the movable cylinder and then the base element thereof.
  • Removable blocking keys are arranged longitudinally throughout the chamber and are activated to immobilize either the cylinder or the base element after each advance.
  • the present invention relates to scrap metal presses in general and, more particularly, to a small-volume, inexpensive, horizontal-type press for producing bales or bundles of scrap metal, particularly light scrap metal.
  • the pressing or compacting means is devised in the shape of a hydraulic cylinder, which is movable with respect to a piston.
  • the shaft of this piston is rigidly anchored to a base element which, at the end of each advancing step of the cylinder, is also advanced by the same longitudinal distance by means of an auxiliary piston positioned internally of the movable cylinder and integral therewith.
  • the auxiliary piston travels within a cylindrical cavity provided inside the main piston and coaxially therewith.
  • the base element is, therefore, anchored in the newly advanced position by means of transverse blocking keys, so as to permit the main cylinder to advance by another compressive step to a further more advanced position.
  • the blocking keys serve the purpose of rigidly positioning the movable cylinder during the phase of advancement of the base element of the press. It is, thus, possible to effect any degree of advancement, while limiting the unit travel of the mobile cylinder to distances considerably smaller than the overall length of the chamber.
  • the present invention consequently, provides for a press of limited dimensions and of relatively low cost when compared to the dimensions and cost required by a press which is compelled by its own very structure to effect a complete travel in compression regardless of the scrap load in the chamber.
  • the return of the mobile cylinder and of its relative piston to the starting position is effected by repeating, in the opposite direction, the operational steps previously carried out, that is to say, by causing the press to effect a number of successive travels of limited displacement.
  • a plurality of conduits provided inside the piston shaft and inside the piston proper, deliver the pressurized fluid, suitably oil, the fluid being then discharged into the various chambers of the mobile cylinder.
  • Suitable fluid control means are also provided in connection with the base element of the press, so as to permit the sequential operational steps of the device.
  • FIGS. 1-4 represent schematically four sequential operational positions of the device of the invention, during the compression of a load of scrap metal;
  • FIGS. -8 represent, schematically, four' other sequential operational positions of the same device during the return travel thereof to the starting position
  • FIG. 9 shows cross-sectionally the longitudinally axial section of the mobile portion of the press of the invention.
  • the press of the invention comprises an elongated chamber 1 into which is charged the scrap metal to be compacted. Also inserted into chamber 1 is the compressing means which is formed of the mobile cylinder 2 with its respective piston connected to the base element 4 by means of shaft 3.
  • the base element 4 is provided with lateral cavities 5 within which are inserted the transverse blocking keys 6 for rigidly immobilizing the base element 4.
  • the operational control of the blocking keys 6 may be effected by means of hydraulic or mechanical or any other suitable means.
  • Additional blocking keys similar to those indicated at 6 are positioned at predetermined locations along the elongated chamber. lllustratively, these additional keys are shown at, for example, 7, 8, 9, and 10. The distance between any two iongitudinally adjacent keys is determined by the length of travel desired.
  • the base element 4 then advances to reach the position shown in FIG. 4, wherein the blocking keys of position 7 are lodged inside the cavities 5 of the base element, thus blocking its ability to move in either direction. At this point, the blocking keys of position 8 are withdrawn and the mobile cylinder 2 is ready to advance further to a new position.
  • the retrieval of the pressing means to the original starting position takes place by repeating in the opposite direction the sequential step described hereabove. For example, from the position shown in FIG. 5, wherein the blocking keys of position 9 are lodged into cavities 5 of the base element, the 1 cylinder 2 is first withdrawn to a position as shown in FIG. 6.
  • the blocking keys of position 9 are removed, see FIG. 7, and the base element is caused to withdraw to a position corresponding to the blocking keys 8. This occurs because the mobile cylinder 2 has a substantially greater mass than the base element, so that only the base element is capable of movement.
  • FIG. 9 shows, cross-sectionally, a typical press including an elongated chamber 33 having an end wall 34 capable of carrying out the compacting steps described hereabove.
  • numeral 21 represents the mobile cylinder having a curved end face which travels longitudinally about piston 11.
  • Piston 11 is internally provided with a cylindrical cavity 20 in which travels the .piston 12.
  • the shaft 13 of piston 12 is rigidly connected with the mobile cylinder 21.
  • the feeding of the pressurized fluid occurs through the central conduit 14 provided inside the shaft 23 which is rigidly connected to piston 11.
  • the central conduit feeds chamber 15 located in front of piston 12, within the inner cylindrical cavity of piston 11.
  • the fluid is also fed through lateral conduit 16 provided inside the shaft 23.
  • Conduit 16 is in fluid communication with the chamber at the rear of piston 11, within the mobile cylinder 21, by means of conduit 17 provided in the piston 11 proper.
  • a third conduit 18 is provided also within shaft 3 and is in fluid communication with chamber 20 through conduit 19 provided in the piston 11.
  • Chamber 20 is formed by the inner cylindrical cavity of the piston and is located in the rear of piston 12.
  • the operation of feeding the pressurized fluid consists of introducing the fluid under pressure into conduits 14, 16 and 18 during the compression sequential steps of the mobile cylinder 2, so as to equalize the pressures on the opposed walls of the element 21.
  • conduits l4 and 16 are connected to a discharge, while pressurized fluid is introduced in conduit 18, thus obtaining the advance of piston 11 and of the base element 24 connected thereto.
  • Blocking keys 25, 26 etc. only two of which are shown schematically in FIG. 9 for ease of illustration, may be moved by any suitable means such as, for example, hydraulic cylinders 27, 28 which, by means of pressurized fluid conduits 29, 30 and 31, 32 can cooperate with the displacement of the base element 24.
  • the withdrawal or retrieval operational steps are obtained by inverting the order of pressurization, as hereabove described.
  • the retrieval operations may be effected, however, in considerably less time.
  • Horizontal press for compacting scrap metal which comprises an elongated chamber including an end wall for receiving the metal to be compacted; a compression means positioned within said elongated chamber; said compression means comprising a mobile cylinder having an end face in axially spaced opposition to said chamber end wall, a movable piston movable within said mobile cylinder, and a base element connected to said mobile cylinder; said movable piston having a cavity therein; a piston positioned within said cavity and rigidly connected to said mobile cylinder; a plurality of movable blocking keys provided in said elongated chamber along the walls thereof, said keys being distanced from one another in a predetermined manner and alternately blocking said mobile cylinder and said base element; and means for displacing under pressure said mobile cylinder, said base element and said blocking keys.
  • said displacing means comprise a plurality of conduits for pressurized fluid positioned within said rigidly connected piston for the introduction of said pressurized fluid into the body of said mobile cylinder and into the movable piston; and a plurality of discharge conduits for said pressurized fluid in fluid communication with said first-mentioned conduits.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Control Of Presses (AREA)
  • Actuator (AREA)
US17502A 1969-03-13 1970-03-09 Horizontal press for compacting scrap metal Expired - Lifetime US3665849A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT6153669 1969-03-13

Publications (1)

Publication Number Publication Date
US3665849A true US3665849A (en) 1972-05-30

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Family Applications (1)

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US17502A Expired - Lifetime US3665849A (en) 1969-03-13 1970-03-09 Horizontal press for compacting scrap metal

Country Status (7)

Country Link
US (1) US3665849A (de)
AT (1) AT296030B (de)
BE (1) BE747344A (de)
DE (2) DE7008544U (de)
ES (1) ES377300A1 (de)
FR (1) FR2037885A5 (de)
GB (1) GB1282382A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2838733C2 (de) * 1978-09-06 1982-03-11 Fa. Muhr und Bender, 5952 Attendorn Profilstahlschere und/oder -stanze

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1469252A (en) * 1921-12-16 1923-10-02 Damrow Brothers Company Continuous cheese press
US2579176A (en) * 1948-03-09 1951-12-18 American Tobacco Co Press
GB946924A (en) * 1960-04-29 1964-01-15 Erwin Traband Improvements relating to baling-presses
US3229619A (en) * 1962-08-24 1966-01-18 Machf A Bijlenga Nv Press

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1469252A (en) * 1921-12-16 1923-10-02 Damrow Brothers Company Continuous cheese press
US2579176A (en) * 1948-03-09 1951-12-18 American Tobacco Co Press
GB946924A (en) * 1960-04-29 1964-01-15 Erwin Traband Improvements relating to baling-presses
US3229619A (en) * 1962-08-24 1966-01-18 Machf A Bijlenga Nv Press

Also Published As

Publication number Publication date
DE7008544U (de) 1970-07-02
AT296030B (de) 1972-01-25
ES377300A1 (es) 1972-06-16
GB1282382A (en) 1972-07-19
BE747344A (de) 1970-08-17
DE2011006A1 (de) 1970-09-17
FR2037885A5 (de) 1970-12-31

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