USRE27607E - Hofer etal r* device for sthoke limitation hydraulically displaced mold carrier units injection molds - Google Patents

Hofer etal r* device for sthoke limitation hydraulically displaced mold carrier units injection molds Download PDF

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Publication number
USRE27607E
USRE27607E US27607DE USRE27607E US RE27607 E USRE27607 E US RE27607E US 27607D E US27607D E US 27607DE US RE27607 E USRE27607 E US RE27607E
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US
United States
Prior art keywords
piston
mold
screw
stroke
limitation
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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
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English (en)
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.)
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Publication date
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Publication of USRE27607E publication Critical patent/USRE27607E/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/64—Mould opening, closing or clamping devices
    • B29C45/67—Mould opening, closing or clamping devices hydraulic
    • B29C45/6778—Stroke adjusting or limiting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/26—Mechanisms or devices for locking or opening dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/24—Other details, e.g. assembly with regulating devices for restricting the stroke

Definitions

  • FIG. 2 shows a cross section through the same device according to our invention, wherein the upper half of the figure shows the actuating piston in its maximum opening stroke position limited by the abutment and the lower half thereof shows it in its minimum opening stroke position limited by the abutment in another adjusted position.
  • the cylinder head Externally of the cylinder head, it carries for actuating purposes, a hand wheel 14 and also (in order to prevent unintentional rotation) a lock nut 15 adapted to be tightened against the cylinder head, in this way retaining the spindle in a position thereof adjusted by means of the hand wheel.
  • the pressure medium On the opening stroke of the piston 1, the pressure medium is conveyed through the connection 21 into a piston-rod-side pressure chamber 25, so that the piston is pushed back into the open position.
  • a narrow annular gap 26 forms between the surface of the screw-threaded sleeve 6 and the walls of the counterbore 9a.
  • the pressure medium contained in the blind bore 9 is then able to escape only through this annular gap, since the nonreturn valve 19 blocks any return flow of the pressure medium through the space between the spindle 8 and the screw-threaded tube 7, and the ducts 20 and 18.
  • a stroke-limiting device for a hydraulically displaced actuating piston that has a first face and a second face to which an axial, piston rod is secured and that is a part of a mold-carrying unit of an injection molding machine comprising: a cylinder including an axial bore in which the actuating piston is adapted to reciprocally move during operation of the mold-carrying unit; wall means positioned across the end of the cylinder adjacent to the first face of the actuating piston; an adjusting device disposed at least in part within said axial bore; an axial, blind aperture in the first face of the actuating piston, said blind aperture being of sufficient size to receive therein at least a portion of the part of the adjusting device disposed within the axial bore; and an abutment element which is adjustable in an infinitely variable manner on the adjusting device in a direction substantially parallel with the longitudinal central axis of the cylinder and which has a dimension, in a plane substantially parallel to the plane of the first face of the actuating piston, greater than the transverse dimension of

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
US27607D 1967-07-05 1971-07-27 Hofer etal r* device for sthoke limitation hydraulically displaced mold carrier units injection molds Expired USRE27607E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1583703 1967-07-05

Publications (1)

Publication Number Publication Date
USRE27607E true USRE27607E (en) 1973-04-03

Family

ID=5679543

Family Applications (1)

Application Number Title Priority Date Filing Date
US27607D Expired USRE27607E (en) 1967-07-05 1971-07-27 Hofer etal r* device for sthoke limitation hydraulically displaced mold carrier units injection molds

Country Status (5)

Country Link
US (1) USRE27607E (de)
JP (1) JPS5028461B1 (de)
CH (1) CH478657A (de)
DE (1) DE1583703B1 (de)
GB (1) GB1218053A (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS566228U (de) * 1979-06-28 1981-01-20
DE3406644A1 (de) * 1984-02-24 1985-08-29 Festo KG, 7300 Esslingen Kolben-zylinder-aggregat
GB2291475A (en) * 1994-07-20 1996-01-24 Edward Fullerton Pneumatic Hydraulic Cylinders

Also Published As

Publication number Publication date
CH478657A (de) 1969-09-30
JPS5028461B1 (de) 1975-09-16
DE1583703B1 (de) 1971-01-07
GB1218053A (en) 1971-01-06

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