US3393292A - Pressure plate for a press - Google Patents

Pressure plate for a press Download PDF

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Publication number
US3393292A
US3393292A US475155A US47515565A US3393292A US 3393292 A US3393292 A US 3393292A US 475155 A US475155 A US 475155A US 47515565 A US47515565 A US 47515565A US 3393292 A US3393292 A US 3393292A
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US
United States
Prior art keywords
plate
recesses
rods
heating
pressure plate
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
US475155A
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English (en)
Inventor
Ritscher Werner
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.)
Werner and Pfleiderer GmbH
Original Assignee
Werner and Pfleiderer GmbH
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 Werner and Pfleiderer GmbH filed Critical Werner and Pfleiderer GmbH
Application granted granted Critical
Publication of US3393292A publication Critical patent/US3393292A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • B30B15/062—Press plates
    • B30B15/064—Press plates with heating or cooling means

Definitions

  • the recesses occupy substantially the surface area of the plate in the crosswise direction thereof, the spacing of the recesses being gradually decreased toward the plate edges parallel to the recesses.
  • Flattened hollow heating rods are inserted in said recesses, and each rod is provided with several electric heating elements inserted therein.
  • the present invention relates to a plate for a press and more particularly to an electrically heated pressure plate for such press.
  • a more specific object of the invention is to provide a novel and improved pressure plate of the general kind above referred to in which the aforedescribed temperature gradients are reduced to an acceptable level and the heat losses at the marginal portions of the plate are large- 3,393,292 Patented July 16, 1968 1y compensated by an increased heating of the marginal portions.
  • Another more specific object of the invention is to provide a novel and improved pressure plate of the general kind above referred to in which a substantially uniform temperature is maintained without impeding free access to the plate and to articles pressed or to be pressed by means of the plate.
  • FIG. 1 is a sectional view of a pressure plate according to the invention
  • FIG. 2 is a similar sectional view of a modification of the pressure plate
  • FIG. 3 is a sectional view of still another modification.
  • FIG. 4 is a sectional view of a further modification.
  • FIG. 1 shows an upper part 1 and a lower part 2 of the pressure plate.
  • the plate parts are made of metal, preferably of a metal with high heat conductivity, such as copper, bronze or aluminum.
  • the upper part of the plate includes a number of ducts or channels 3 for carrying a cooling or heating medium and a duct 4 for insertion of a suitable heat indicating instrument.
  • the instrument itself and the connections thereof should also be visualized as being conventional.
  • the lower plate part 2 includes in its side facing plate part 1 a plurality of recesses 5.
  • the recesses are subtanitially coextensive with the respective length of the plate and are disposed parallel to ducts 3 and the respective side edges of part 2.
  • a heating rod 6 is inserted into each of the recesses, substantially coextensive therewith.
  • Each heating rod is hollow and has a flattened shell 7 of preferably oval cross section in which are fitted three electric heating elements 8.
  • the heating elements may be made of coiled resistance wire and are substantially coextensive with the length of the rods.
  • the resistance wires may be connected to a suitable source of three-phase current.
  • the rods are filled with a suitable hardened heat refractory insulation material 9 which secures the heating elements in mutually fixed positions.
  • a middle group A of heat rods and two outer groups B there is provided a middle group A of heat rods and two outer groups B.
  • the recesses 5 and the heating rods therein included in the middle group A are uniformly spaced, while the spacing of the recesses and the heating rods therein included in the outer groups B gradually decreases towards the respective edges of plate part 2.
  • the marginal portions of part 2 are heated more than the mid-portion, thereby compensating for the increased heat radiation at the marginal portions of the plate.
  • a middle group A of heating rods is provided and arranged in the same manner as in FIGS. 1 and 2, but the recesses 5' for accommodating the heating rods in the outer groups B are enlarged to accommodate several heating rods.
  • the recesses 5' have preferably the illustrated generally trapezoidal cross section.
  • FIG. 3 Two or more heating rods 6, including elements 8 as previously described, are inserted into each of the recesses There are shown in FIG. 3, three symmetrically disposed heating rods each defining an angle with the plane of the respective upper side of plate part 2.
  • the rods are secured in recesses 5' by inserts 12 which are preferably made of the same material as plate parts 1 and 2.
  • FIG. 4 is similar to FIG. 3, except that the middle one of the three rods in recesses 5 is moved closer to the heating rod adjacent to the respective edge of the plate than to the rods forming the middle group of heating rods. As a result, the increased heating of the marginal portions of the plate becomes still more pronounced.
  • the distribution and grouping of the heating rods across the surface area of plate part 2 can be conveniently and widely varied to suit the purposes of a specific application.
  • a substantially rectangular pressure plate for a press said plate having in one of its face sides a plurality of spaced apart straight recesses extending across substantially the length of the plate in one direction thereof parallel to the respective edges of the plate and substantially occupying the surface area of the plate in the cross wise direction thereof, the spacing of the recesses being gradually decreased toward the plate edges parallel to said recesses, and comprising flattened hollow heating rods inserted into said recesses and having a length substantially coextensive therewith, and several electric heating elements fitted into each one of said rods substantially coextensive therewith.
  • a pressure plate according to claim 1 wherein adjacent to the plate edges parallel said recesses an outer group of recesses is spaced closer than the spacing of a group of recesses occupying the mid-portion of the plate and disposed between said outer groups, the spacing of the recesses constituting the outer groups being mutually equal and the spacing of the recesses constituting the middle group of recesses being also mutually equal.
  • a substantially rectangular pressure plate for a press said plate having in one of its face sides aplurality of spaced apart straight recesses extending across substantially the length of the plate in one direction thereof parallel to the respective edges of the plate and substantially occupying the surface area-of the plate in the crosswise direction thereof, and comprising hollow heating rods having a length substantially coextensive with that of said recesses, one of said rods being inserted into each one of a middle group of recesses occupying a mid-portion of the plate and several of said rods being inserted in each one of the outer groups of recesses occupying the marginal portions of the plate adjacent to the edges thereof parallel to the recesses, and several electric heating elements fitted into each of said rods and having a length substantially coextensive therewith.
  • a pressure plate according to claim 4 wherein the single rods inserted into said middle group of recesses have fiat surface portions disposed parallel to the plane of the face side of the plate including the recesses, and the several rod inserted into each of said outer groups of recesses have flat surface portions defining angles with the plane of said face side of the plate.
  • a pressure plate according to claim 4 wherein several rods are inserted in mutually uniform relationship at least in one of the recesses in each of the outer groups of recesses.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Central Heating Systems (AREA)
US475155A 1964-07-29 1965-07-27 Pressure plate for a press Expired - Lifetime US3393292A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW0033127 1964-07-29

Publications (1)

Publication Number Publication Date
US3393292A true US3393292A (en) 1968-07-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US475155A Expired - Lifetime US3393292A (en) 1964-07-29 1965-07-27 Pressure plate for a press

Country Status (3)

Country Link
US (1) US3393292A (de)
AT (1) AT262066B (de)
ES (1) ES314567A1 (de)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3478192A (en) * 1968-04-25 1969-11-11 Ostrander Seymour Co Electrically heated platen
US3482510A (en) * 1967-12-12 1969-12-09 Fickler Hans Heinrich Arrangements in hot presses
US3549461A (en) * 1967-10-19 1970-12-22 Skisearch Press for skis
US3624836A (en) * 1969-04-11 1971-11-30 Packaging Ind Inc Temperature gradient bar sealer
US3772500A (en) * 1971-06-28 1973-11-13 J Thibault Electrical heating envelopes
US4023481A (en) * 1975-09-17 1977-05-17 Molins Machine Company, Inc. Double facer platen
US4208574A (en) * 1977-03-17 1980-06-17 Werner & Pfleiderer Temperature controllable heater plate for molds
US4398991A (en) * 1980-10-25 1983-08-16 Wagener Schwelm Gmbh & Co. Heating platen for a belt press
US4530521A (en) * 1980-03-04 1985-07-23 Von Roll Ag Electrically weldable socket for joining pipe members
EP0218914A1 (de) * 1985-09-13 1987-04-22 Rockwell International Corporation Induktionsheizplatte für die Warmmetallbearbeitung
US4964943A (en) * 1986-05-10 1990-10-23 F. E. Schulte Strathaus Kg Device for thermally joining ends of conveyor belts
US5028295A (en) * 1989-10-10 1991-07-02 Cracchiolo Jerome S Carpet seaming iron with ultra thin guide strut and improved heat control
EP0479571A1 (de) * 1990-10-05 1992-04-08 Acushnet Company Isolationsplatte für Formpressen
US5158132A (en) * 1989-03-20 1992-10-27 Gerard Guillemot Zone-regulated high-temperature electric-heating system for the manufacture of products made from composite materials
US5435378A (en) * 1991-06-04 1995-07-25 Process And Equipment Development, Inc. Apparatus for accurately heating and cooling articles
RU2257298C2 (ru) * 2003-09-25 2005-07-27 Открытое акционерное общество "Научно-исследовательский технологический институт" (ОАО "НИТИ-ТЕСАР") Греющая плита пресса
US20050220924A1 (en) * 2004-03-23 2005-10-06 Apollo Hardwoods Company Heating panel
US20090056855A1 (en) * 2007-08-30 2009-03-05 Hans-Gerd Stevens Laminator, pressure membrane, and method for laminating component stacks
US9914275B1 (en) * 2014-11-20 2018-03-13 Akebono Brake Industry Co., Ltd. Thermally-conductive hot press assembly
US20230173738A1 (en) * 2020-12-22 2023-06-08 Asano Laboratories Co., Ltd. Thermoforming device and thermoforming method

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1110532A (en) * 1913-09-30 1914-09-15 Lyman C Byce Incubator.
US1415550A (en) * 1915-07-31 1922-05-09 Jr William S Hadaway Electric heating apparatus
US1994676A (en) * 1933-11-16 1935-03-19 Edwin L Wiegand Electrical heating unit
FR927185A (fr) * 1946-04-24 1947-10-22 Chaluvia Sa Des Ets Appareil de chauffage électrique
US2481554A (en) * 1946-12-17 1949-09-13 Thomas W Winstead Thermoplastic film heat sealing element
US2499961A (en) * 1948-04-30 1950-03-07 Gen Electric Electric heating unit
US2526906A (en) * 1947-10-24 1950-10-24 Irving Seidman Heating roller
US2777927A (en) * 1955-09-30 1957-01-15 Irving G Glenn Multiple electric heater assembly
US3317709A (en) * 1964-05-11 1967-05-02 Mc Graw Edison Co Electric griddle

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1110532A (en) * 1913-09-30 1914-09-15 Lyman C Byce Incubator.
US1415550A (en) * 1915-07-31 1922-05-09 Jr William S Hadaway Electric heating apparatus
US1994676A (en) * 1933-11-16 1935-03-19 Edwin L Wiegand Electrical heating unit
FR927185A (fr) * 1946-04-24 1947-10-22 Chaluvia Sa Des Ets Appareil de chauffage électrique
US2481554A (en) * 1946-12-17 1949-09-13 Thomas W Winstead Thermoplastic film heat sealing element
US2526906A (en) * 1947-10-24 1950-10-24 Irving Seidman Heating roller
US2499961A (en) * 1948-04-30 1950-03-07 Gen Electric Electric heating unit
US2777927A (en) * 1955-09-30 1957-01-15 Irving G Glenn Multiple electric heater assembly
US3317709A (en) * 1964-05-11 1967-05-02 Mc Graw Edison Co Electric griddle

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3549461A (en) * 1967-10-19 1970-12-22 Skisearch Press for skis
US3482510A (en) * 1967-12-12 1969-12-09 Fickler Hans Heinrich Arrangements in hot presses
US3478192A (en) * 1968-04-25 1969-11-11 Ostrander Seymour Co Electrically heated platen
US3624836A (en) * 1969-04-11 1971-11-30 Packaging Ind Inc Temperature gradient bar sealer
US3772500A (en) * 1971-06-28 1973-11-13 J Thibault Electrical heating envelopes
US4023481A (en) * 1975-09-17 1977-05-17 Molins Machine Company, Inc. Double facer platen
US4208574A (en) * 1977-03-17 1980-06-17 Werner & Pfleiderer Temperature controllable heater plate for molds
US4530521A (en) * 1980-03-04 1985-07-23 Von Roll Ag Electrically weldable socket for joining pipe members
US4398991A (en) * 1980-10-25 1983-08-16 Wagener Schwelm Gmbh & Co. Heating platen for a belt press
EP0218914A1 (de) * 1985-09-13 1987-04-22 Rockwell International Corporation Induktionsheizplatte für die Warmmetallbearbeitung
US4964943A (en) * 1986-05-10 1990-10-23 F. E. Schulte Strathaus Kg Device for thermally joining ends of conveyor belts
US5158132A (en) * 1989-03-20 1992-10-27 Gerard Guillemot Zone-regulated high-temperature electric-heating system for the manufacture of products made from composite materials
US5028295A (en) * 1989-10-10 1991-07-02 Cracchiolo Jerome S Carpet seaming iron with ultra thin guide strut and improved heat control
EP0479571A1 (de) * 1990-10-05 1992-04-08 Acushnet Company Isolationsplatte für Formpressen
US5435378A (en) * 1991-06-04 1995-07-25 Process And Equipment Development, Inc. Apparatus for accurately heating and cooling articles
RU2257298C2 (ru) * 2003-09-25 2005-07-27 Открытое акционерное общество "Научно-исследовательский технологический институт" (ОАО "НИТИ-ТЕСАР") Греющая плита пресса
US20050220924A1 (en) * 2004-03-23 2005-10-06 Apollo Hardwoods Company Heating panel
WO2005094495A3 (en) * 2004-03-23 2007-06-07 Apollo Hardwoods Company Heating panel
US7556491B2 (en) * 2004-03-23 2009-07-07 Apollo Hardwoods Company Heating panel and method of heating
US20090056855A1 (en) * 2007-08-30 2009-03-05 Hans-Gerd Stevens Laminator, pressure membrane, and method for laminating component stacks
US9914275B1 (en) * 2014-11-20 2018-03-13 Akebono Brake Industry Co., Ltd. Thermally-conductive hot press assembly
US20230173738A1 (en) * 2020-12-22 2023-06-08 Asano Laboratories Co., Ltd. Thermoforming device and thermoforming method
US11691329B2 (en) * 2020-12-22 2023-07-04 Asano Laboratories Co., Ltd. Thermoforming device and thermoforming method

Also Published As

Publication number Publication date
AT262066B (de) 1968-05-27
ES314567A1 (es) 1965-09-01

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