UST939001I4 - Clarke - Google Patents

Clarke Download PDF

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Publication number
UST939001I4
UST939001I4 US30172772A UST939001I4 US T939001 I4 UST939001 I4 US T939001I4 US 30172772 A US30172772 A US 30172772A US T939001 I4 UST939001 I4 US T939001I4
Authority
US
United States
Prior art keywords
liquid
chamber
pressing
cushion plate
sheets
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.)
Pending
Application number
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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.)
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of UST939001I4 publication Critical patent/UST939001I4/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B30B15/061—Cushion plates
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/52—Heating or cooling
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/3642—Bags, bleeder sheets or cauls for isostatic pressing
    • B29C2043/3655—Pressure transmitters, e.g. caul plates; pressure pads
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor

Definitions

  • a method of making a pressed article including the step of pressing a workpiece and at least one resilient liquid-filled cushion plate between the platens of a press and heating, or optionally cooling, the workpiece and cushion plate during the pressing operation is disclosed.
  • the pressing operation is accomplished such that the volume of liquid in the chamber of the cushion plate is maintained substantially constant by providing means responsive to the pressure within the cushion plate to accept the increase in volume of liquid brought about by the thermal expansion of the liquid filling the chamber in the heated embodiment, or to introduce additional liquid into the closed chamber when the pressing is conducted and the workpiece is cooled.
  • the disclosed resilient cushion plate includes a pair of continuous metal sheets spaced apart from each other in a substantially parallel manner, at least one of the sheets being relatively thin and flexible.
  • the sheets are sealed together around their peripheries to define an inner chamher which can be completely filled with a liquid and the plate is provided with an entrance leading into the chamber positioned so as to not interfere with the pressing operation.
  • the entry port permits the filling of the chamber with liquid and provides for communication to and from the chamber for accommodating the expansion or contraction of liquid within the chamber, depending upon pressing conditions.
  • the invention is particularly adapted for pressing sheets of plastics materials and an apparatus for conducting the method is also described.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Press Drives And Press Lines (AREA)
  • Veneer Processing And Manufacture Of Plywood (AREA)
  • Control Of Presses (AREA)
US30172772 1971-11-05 1972-10-30 Clarke Pending UST939001I4 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5148771A GB1402096A (en) 1971-11-05 1971-11-05 Pressing

Publications (1)

Publication Number Publication Date
UST939001I4 true UST939001I4 (en) 1975-10-07

Family

ID=10460218

Family Applications (1)

Application Number Title Priority Date Filing Date
US30172772 Pending UST939001I4 (en) 1971-11-05 1972-10-30 Clarke

Country Status (8)

Country Link
US (1) UST939001I4 (fr)
JP (1) JPS4854567A (fr)
BE (1) BE790996A (fr)
DE (1) DE2254252A1 (fr)
FR (1) FR2160005A5 (fr)
GB (1) GB1402096A (fr)
IT (1) IT970129B (fr)
NL (1) NL7214884A (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3425392A1 (de) * 1984-07-10 1986-02-13 Bühler, Eugen, Dipl.-Ing., 8877 Burtenbach Verfahren zur herstellung von flachformlingen und einrichtung zur durchfuehrung dieses verfahrens
GB2163699B (en) * 1984-08-31 1988-04-13 Bobst Sa Press device and method
MX365194B (es) 2012-12-27 2019-05-27 Tctech Sweden Ab Dispositivo y método para calentar un molde o herramienta.
EP2960037B1 (fr) * 2014-06-26 2017-12-20 TCTech Sweden AB Procédé et dispositif pour gaufrage/compression
EP3056329B1 (fr) * 2015-02-12 2018-04-04 TCTech Sweden AB Dispositif et procédé de pressage/gaufrage

Also Published As

Publication number Publication date
IT970129B (it) 1974-04-10
GB1402096A (en) 1975-08-06
FR2160005A5 (fr) 1973-06-22
DE2254252A1 (de) 1973-05-10
BE790996A (fr) 1973-05-07
NL7214884A (fr) 1973-05-08
JPS4854567A (fr) 1973-07-31

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