EP0163818B1 - Vorrichtung zum Aufbringen einer Flächenpressung auf fortschreitende Werkstücke - Google Patents

Vorrichtung zum Aufbringen einer Flächenpressung auf fortschreitende Werkstücke Download PDF

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Publication number
EP0163818B1
EP0163818B1 EP85102695A EP85102695A EP0163818B1 EP 0163818 B1 EP0163818 B1 EP 0163818B1 EP 85102695 A EP85102695 A EP 85102695A EP 85102695 A EP85102695 A EP 85102695A EP 0163818 B1 EP0163818 B1 EP 0163818B1
Authority
EP
European Patent Office
Prior art keywords
pressure
pressure plate
pressure chamber
sealing strips
holder
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
Application number
EP85102695A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0163818A1 (de
Inventor
Hymmen Kg Theodor
Original Assignee
Theodor Hymmen KG
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 Theodor Hymmen KG filed Critical Theodor Hymmen KG
Priority to AT85102695T priority Critical patent/ATE30221T1/de
Publication of EP0163818A1 publication Critical patent/EP0163818A1/de
Application granted granted Critical
Publication of EP0163818B1 publication Critical patent/EP0163818B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B5/00—Presses characterised by the use of pressing means other than those mentioned in the preceding groups
    • B30B5/04—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band
    • B30B5/06—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band co-operating with another endless band
    • B30B5/062—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band co-operating with another endless band urged by directly-acting fluid pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/906—Seal for article of indefinite length, e.g. strip, sheet

Definitions

  • the invention relates to a device for applying surface pressure to progressive workpieces, such as wood-based panels or the like, in which at least one rotating press belt can be pressed against the workpiece by a pressure medium that can be introduced into a pressure chamber, and the pressure chamber can be pressed through part of a strand of the press belt.
  • a pressure medium that can be introduced into a pressure chamber
  • the pressure chamber can be pressed through part of a strand of the press belt.
  • a device of this type is known (EP-0 026 396), in which the sealing strips forming the seal on the longitudinal and transverse edges of the pressure plate run in a straight line and form a rectangular circumferential seal on the pressure plate.
  • the sealing strip forming the cross seal is intensively supplied with the lubricant in the inlet area, while the lubrication of the cross seal in the outlet area of the press belt is poorer.
  • the straight sealing strips which are provided as longitudinal seals, receive the lubricant only in the inlet area of the press belt and run dry over the remaining part of their length.
  • the invention has for its object to design a device of the type mentioned so that the most uniform possible supply of the sealing strips forming the longitudinal seal is guaranteed over its entire length.
  • the sealing strip provided on the two longitudinal edges of the pressure plate has a periodic course extending from the straight line and delimits bulges of the pressure chamber and a lubricant can be supplied adjacent to the bulge limits.
  • the lubricant can be supplied inside the bulges of the pressure chamber or outside the pressure chamber in the area of the cross-profiles of the sealing strips.
  • the transverse profiles of the sealing strips can have an undulating, zigzag or other geometric shape, which ensures that the lubricant supplied to the press belt is transported from the press belt into the area of the sealing surfaces of the sealing strips and is distributed as evenly as possible over these sealing surfaces. This significantly increases the life of the sliding seal.
  • the device 1 has a lower frame 2 and an upper frame 3, in each of which endless press belts 4 are installed.
  • the press belts 4 run around deflection rollers 5 and are driven by them. They are arranged with respect to one another with a gap which corresponds to the width of a workpiece 6 to be machined. While the press belts 4 carry out a horizontal movement with their surfaces touching the workpiece 6, the workpiece 6 is drawn into the device, specifically into the gap which exists between the surfaces, and is pressurized there by the surfaces of the press belts. When the workpiece 6 passes through the device, it is processed so that it leaves the gap between the press belts 4 as a finished workpiece.
  • foils 7 are pressed onto the top and bottom of the workpiece 6 and are pulled off from supply rolls 8.
  • the pressing process can take place at room temperature or at higher temperatures which are applied to the workpiece in the machining area.
  • the upper frame 3 can be pressed against the lower frame 2 as a whole or, after a rough adjustment of the distance between the upper frame 3 ′ and the lower frame 2, the required pressure can be exerted by means of an air pressure that is present in pressure chambers 9 is built, which are each arranged on the back of the press belt 4 with respect to the workpiece 6.
  • guide slides 10 are provided for the rough adjustment, which are fixedly arranged on the lower frame 2 and on which the upper frame 3 can be displaced in the vertical direction.
  • Hydraulic cylinders 11 are provided for the displacement.
  • the pressure chambers 9 are delimited on the side facing away from the working side of the press belt by pressure plates 12 which are guided relative to the frames 2 and 3 and the movement of which is carried out by hydraulic cylinders 13.
  • the pressure plate 12 has on its side facing the press belt 4 a circumferential groove 14 for fastening a seal 15.
  • the seal 15 rests on the press belt 4, which slides along the seal during operation.
  • the pressure chamber 9 is thus delimited by the pressure plate 12, by the working strand of the press belt 4 and by the circumferential seal 15.
  • the pressure medium, for. B. compressed air Via the channels 16 provided in the pressure plate 12, the pressure medium, for. B. compressed air, the pressure chamber 9 and in the illustrated embodiment according to FIG. 2 via a branch channel 17 of the groove 14.
  • the strip-shaped seal 15 is held in the groove 14 by a frame designed as a frame, which likewise has a circumferential groove which is open to the press belt 4 and into which the cross-sectionally rectangular seal is inserted.
  • the socket 18 is arranged perpendicular to the press belt within the groove 14, while the seal 15 is stuck within the socket.
  • the width of the socket 18 is made smaller than the width of the groove 14, so that between the groove and the socket. Distance 19 remains.
  • the socket 18 is attached to a rubber-elastic seal in the form of a membrane 20, which is fixed with its two longitudinal edges on the pressure plate in a gas-tight and liquid-tight manner.
  • the elastic membrane 20 is releasably attached to the edge of the pressure plate 12 by means of screws 21.
  • the membrane edges are clamped between the holding strips 22 and the pressure plate 12 by means of the screws 21.
  • Screws 23 extend through the socket 18 and are screwed with their threaded shafts into a pressure medium hose 24 which is arranged on the side of the membrane 20 opposite the socket.
  • the circumferential seal 15 is composed of sealing strips 25 and 26 forming the transverse seal and of the sealing strips 27 and 28 forming the longitudinal seal.
  • sealing strips 25 and 26 provided in the inlet and outlet areas of the press binding are designed in a straight line, while the sealing strips 27 and 28 are wave-shaped. This wave-shaped transverse profiling of the sealing strips 27, 28 gives the pressure chamber bulges 29 in the region of the longitudinal sides, which are provided over the entire length of the sealing strips 27, 28 in the exemplary embodiment shown.
  • the supply of the lubricant e.g. B. oil, takes place in the vicinity of the cross profiles of the sealing strips 27, 28, inside or outside the pressure chamber 9th
  • the screws 23 in the area of the pressure chamber and / or the screws 30 outside the pressure chamber are equipped with lubricating nozzles 31 through which the lubricant is then fed to the press belt 4, so that the press belt transports the lubricant to the sealing strip.
  • the lubricating nozzles have a throttle bore on the side facing the pressure chamber 9, which starts from a bore of larger diameter, this bore opening into the groove 14.
  • sealing strips 27 and 28 are of undulating design, these sealing strips can also be zigzag-shaped or have three-dimensional shapes, which are shown in FIGS. 5 and 6.
  • the sealing strips 32 arranged on the longitudinal edges of the pressure plate are designed such that the bulges 29 of the pressure chamber are rectangularly delimited in the region of the longitudinal edges.
  • the transverse profiles of the sealing strips 27, 28, 32, 33 extend almost over the entire width of the socket 18.
  • sealing strips 25, 26 forming the transverse seal run in a straight line
  • sealing strips 25, 26 transverse to their longitudinal direction e.g. B. wavy or zigzag to profile.
  • the sealing strip 25 can be provided outside of the pressure chamber 9 and the sealing strip 26 within the pressure chamber 9 can be provided with devices for supplying a lubricant.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Veneer Processing And Manufacture Of Plywood (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Feeding Of Workpieces (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Peptides Or Proteins (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
EP85102695A 1984-05-10 1985-03-09 Vorrichtung zum Aufbringen einer Flächenpressung auf fortschreitende Werkstücke Expired EP0163818B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85102695T ATE30221T1 (de) 1984-05-10 1985-03-09 Vorrichtung zum aufbringen einer flaechenpressung auf fortschreitende werkstuecke.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3417288 1984-05-10
DE3417288A DE3417288A1 (de) 1984-05-10 1984-05-10 Vorrichtung zum aufbringen einer flaechenpressung auf fortschreitende werkstuecke

Publications (2)

Publication Number Publication Date
EP0163818A1 EP0163818A1 (de) 1985-12-11
EP0163818B1 true EP0163818B1 (de) 1987-10-14

Family

ID=6235442

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85102695A Expired EP0163818B1 (de) 1984-05-10 1985-03-09 Vorrichtung zum Aufbringen einer Flächenpressung auf fortschreitende Werkstücke

Country Status (8)

Country Link
US (1) US4665819A (uk)
EP (1) EP0163818B1 (uk)
JP (1) JPS6119535A (uk)
AT (1) ATE30221T1 (uk)
DE (1) DE3417288A1 (uk)
ES (1) ES8608378A1 (uk)
FI (1) FI76279C (uk)
IN (1) IN165173B (uk)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3525154A1 (de) * 1985-07-13 1987-01-22 Santrade Ltd Dichtungsanordnung fuer eine mit druckkammern ausgeruestete doppelbandpresse
DE3722157A1 (de) * 1987-07-04 1989-01-12 Hymmen Theodor Gmbh Vorrichtung zum aufbringen einer flaechenpressung auf kontinuierlich bewegte werkstoffbahnen
ATA185093A (de) * 1993-09-14 2000-06-15 Danubia Petrochem Polymere Doppelbandpresse mit hydrostatischer bandstütze
JP2702879B2 (ja) * 1993-09-22 1998-01-26 松下冷機株式会社 自動販売機の制御装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB365104A (en) * 1929-09-03 1932-01-12 Mihail Victor Bodnarescu Improvements in hollow annular bodies
US2303090A (en) * 1938-11-08 1942-11-24 Guiberson Corp Pressure drilling head
US3748225A (en) * 1970-11-19 1973-07-24 Beloit Corp Fibrous web press nip structure including nonporous belts backed by pistons supported with fluid pressure
NL7314849A (nl) * 1973-10-30 1975-05-02 Noordelijke Ind Voor Vezelverw Persinrichting.
DE2937971A1 (de) * 1979-09-20 1981-04-02 Theodor Hymmen Kg, 4800 Bielefeld Vorrichtung zum aufbringen einer flaechenpressung auf fortschreitende werkstuecke
DE2937972A1 (de) * 1979-09-20 1981-04-02 Theodor Hymmen Kg, 4800 Bielefeld Vorrichtung zum aufbringen einer flaechenpressung auf fortschreitende werkstuecke
DE3135031C2 (de) * 1981-09-04 1983-07-21 Held, Kurt, 7218 Trossingen Doppelbandpresse zur Ausübung einer Flächenpressung
DE3310700A1 (de) * 1983-03-24 1984-09-27 Theodor Hymmen Kg, 4800 Bielefeld Vorrichtung zum aufbringen einer flaechenpressung auf fortschreitende werkstuecke

Also Published As

Publication number Publication date
FI851808A0 (fi) 1985-05-08
ES8608378A1 (es) 1986-06-16
FI76279B (fi) 1988-06-30
JPS6119535A (ja) 1986-01-28
FI76279C (fi) 1988-10-10
DE3417288A1 (de) 1985-11-14
DE3417288C2 (uk) 1993-05-19
FI851808L (fi) 1985-11-11
US4665819A (en) 1987-05-19
JPH0374882B2 (uk) 1991-11-28
IN165173B (uk) 1989-08-26
ATE30221T1 (de) 1987-10-15
EP0163818A1 (de) 1985-12-11
ES542951A0 (es) 1986-06-16

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