EP0036176A2 - Dispositif pour exercer une pression de surface sur des pièces d'usinage en mouvement - Google Patents

Dispositif pour exercer une pression de surface sur des pièces d'usinage en mouvement Download PDF

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Publication number
EP0036176A2
EP0036176A2 EP81101787A EP81101787A EP0036176A2 EP 0036176 A2 EP0036176 A2 EP 0036176A2 EP 81101787 A EP81101787 A EP 81101787A EP 81101787 A EP81101787 A EP 81101787A EP 0036176 A2 EP0036176 A2 EP 0036176A2
Authority
EP
European Patent Office
Prior art keywords
pressure
pressure chamber
socket
press belt
workpiece
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.)
Granted
Application number
EP81101787A
Other languages
German (de)
English (en)
Other versions
EP0036176B1 (fr
EP0036176A3 (en
Inventor
Hymmen Gmbh Firma
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.)
Hymmen GmbH
Original Assignee
Hymmen 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
Priority claimed from DE19803009770 external-priority patent/DE3009770A1/de
Priority claimed from DE19803048839 external-priority patent/DE3048839A1/de
Application filed by Hymmen GmbH filed Critical Hymmen GmbH
Priority to AT81101787T priority Critical patent/ATE14693T1/de
Publication of EP0036176A2 publication Critical patent/EP0036176A2/fr
Publication of EP0036176A3 publication Critical patent/EP0036176A3/de
Application granted granted Critical
Publication of EP0036176B1 publication Critical patent/EP0036176B1/fr
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

Definitions

  • the invention relates to a device for applying a surface pressure to progressive workpieces such as wooden panels, wood-based panels or the like.
  • a device for applying a surface pressure to progressive workpieces such as wooden panels, wood-based panels or the like.
  • With at least one rotating press belt which by a pressure medium can be pressed against the workpiece within a pressure chamber equipped with a seal on the inside of the press belt.
  • the invention has for its object to further develop the generic device so that the seals are formed without joints or joints and without complex supports, and have good emergency running properties.
  • the sealing strips should be easy to replace.
  • the pressure chamber should be able to be easily adapted to different workpiece widths.
  • the continuous workpiece should also directly control the pressure medium flowing into the many outer pressure chambers and thus the movement of the many inner sockets that occasionally attach to the press belt, independently of one another and on the other hand from any shape (width, length) and throughput speed of the individual workpieces.
  • This object is achieved in a generic device in that several smaller pressure chambers across the width are arranged on the effective pressure surface of the press belt, which are designed in their basic form as a round body with a circular base.
  • the sealing problem can be solved particularly advantageously by a large number of such small pressure chambers.
  • Such pressure chambers with a circular basic shape that is to say as cylinder sections, can be produced very advantageously.
  • the circular sealing strips can be made in one piece, i.e. without joints. Because of their advantageous shape the seal is well supported on all sides and premature wear is avoided. Since the ring surfaces are relatively small, their surfaces can be machined very precisely. Difficulties due to machining inaccuracies, which occurred with previous seals, are eliminated. Small sealing strips can also be easily replaced. By simply stringing together other smaller pressure chambers, the total effective pressure areas on the press belt can be widened or lengthened depending on the desired press area size. The same components can be used again and again.
  • a shut-off device which temporarily separates the pressure medium supply from the inner pressure chamber into the outer pressure chamber, is provided between the two pressure chambers.
  • shut-off device makes it possible for an incoming workpiece and thus a corresponding lifting of the press belt and thus one or more inner sockets of individual pressure chambers, the associated shut-off device opens in each case and pressure medium not only constantly pressures the inner pressure chamber, but also temporarily the outer pressure chamber, so that the pressure belt in the area of this outer pressure chamber is also pressed against the workpiece by the pressure medium.
  • This control of each individual external pressure chamber which lies in the area of the surface of the workpiece passing through, acts immediately (ie without delay) and can detect all pressure chambers.
  • this shut-off device blocks the pressure medium supply to the outer pressure chamber with the movement of the inner socket in the direction of the press belt, so that the latter is largely depressurized and no pressure medium can also escape laterally in a disadvantageous manner.
  • the pressure chambers which are in the area of the surfaces of these workpieces, are continuously - as described above - pressurized or relieved of pressure, so that the pressure belt is only pressed in the area of the moving surface of the workpiece or workpieces. Pressure losses are largely avoided by such a direct and precise control.
  • the action on the outer pressure chamber changes according to the respective (temporarily) effective width of the printing area (corresponding to the width of the workpiece passing through).
  • this shut-off device is in each case designed as an O-sealing ring which is arranged between the annular space, which is left free between the inner position-changing frame and the fixed holding part, and a gradation of the holding part.
  • the holding part has further transverse bores, so that the fixed holding part controls the flow of the pressure medium as a function of the variable position of the inner socket of each pressure device, as in the case of a control piston.
  • the device according to the invention consists of a lower frame and an upper frame, in each of which endless press belts 10 are installed. These press belts are stretched on pulleys and can be driven by them. They are arranged with a gap to each other that corresponds to the width of a workpiece to be machined. While the press belts 10 carry out a horizontal movement with their surfaces touching the workpiece, the workpiece is drawn into the gap between these surfaces and is pressurized there by the surfaces of the press belts 10. When the workpiece passes through this device, it is processed so that it leaves the gap between the press belts 10 at the outlet as a finished workpiece.
  • films can be pressed onto the top and bottom of workpieces, which run off supply rolls.
  • Such a pressing process can take place at room temperature, but it can also simultaneously provide the application of high temperatures to the workpiece in the machining area.
  • the desired pressure can be applied as air pressure which acts in the pressure chambers, which are each arranged on the back of the press belt 10 with respect to the workpiece, that is to say on the surface of the press belt 10 which is not in contact with the workpiece.
  • Each pressure chamber is formed by an outer socket 14 or 15.
  • the outer socket 12 or 13 is held on the pressure plate 11 by means of a screw part 16 or 17 which is screwed into a threaded bore 18 or 19 of the pressure plate 11.
  • Each pressure chamber is divided by the inner socket 14 or 15 into an inner pressure chamber 20 or 21 and an outer pressure chamber 22 or 23.
  • the outer frame 12 and 13 and the inner frame 14 and 14 are arranged concentrically with each other.
  • the seal 25 is fastened to a guide ring 26 which concentrically surrounds the inner socket 15 and which is supported on a flange 27 formed on the inner socket 15.
  • An elastic sealing ring 28 or 29 bridges the distance between the inner socket 14 or between the guide ring 26 and the outer socket 12 or 13 surrounding it.
  • the inner socket 14 with the seal 24 can thus move smoothly with respect to the outer socket 12 move slightly.
  • the guide ring 26 with the seal 25 can also move slightly relative to the outer mount 13.
  • annular space 30 is left between the screw part 16 with stepped head 16 a and the inner socket 14, which connects the inner pressure chamber 20 and the outer pressure chamber 22 to one another.
  • annular space 31 is left between the inner socket 15 and the guide ring 26, through which the inner pressure chamber 21 and the outer pressure chamber 23 are connected to one another.
  • Compressed air can pass through channels 32 and 33 to the threaded holes 18 and 19 of the pressure plate 11 and from there through a central blind hole 34 of the screw part 16 or a central blind hole 35 of the screw part 17 via radial holes 36 of the screw part 16 or radial holes 37 of the Flow screw part 17 into the inner pressure chamber 20 or 21. From there, the compressed air can reach the outer pressure chamber 22 or 23 via the annular space 20 or 31 and press the press belt 10 against the workpiece there.
  • the pressure in the inner pressure chamber 20 causes the inner socket 14 with the seal 24 to be pressed against the press belt 10.
  • the contact pressure depends on the pressure and the pressure applied to the press belt 10 parallel surface of the inner socket 14 within the pressure chamber 20. This force acts on one of the pressure in the outer pressure chamber 22 and force acting on this area of the inner socket 14 as a function of this pressure.
  • the pressure in the outer pressure chamber 22 causes the press belt 10 to be pressed against the workpiece.
  • the pressure in the inner pressure chamber 21 causes the guide ring 26 with the seal 25 to be pressed against the press belt 10.
  • the contact pressure depends on the pressure and the end face of the guide ring 26 which is parallel to the press belt 10 and which is within the inner pressure chamber 21 is located. This force is acted upon by the pressure in the outer pressure chamber 23 and the end face of the guide acted upon by this pressure ring 26 opposing force within the outer pressure chamber 23.
  • the pressure in the outer pressure chamber 23 causes the press belt 10 to be pressed against the workpiece.
  • a helical compression spring 38 or 39 is used, which is supported at one end on the outer socket 12 or 13 and at the other end on the inner socket 14 or the guide ring 26. 3, 6, 7 and 9 of the drawing, this is Helical compression spring 38 is conical, while the helical compression spring 39 is cylindrical according to Figure 4 of the drawing.
  • an additional shut-off device in the form of a 0-shaped, preferably elastic sealing ring 40 is switched on between the stepped head 16a and the surface 14a of the press belt an approach of the press belt side surface 14a with respect to the stepped head 16a closes the annular space 30, so that the pressure effect from the inner pressure chamber 20 on the inner socket 14 increases (see FIGS. 7 and 8).
  • Such a simple shut-off device allows the supply of the pressure medium from the inner chamber 20 into the outer chamber 22 to be controlled directly by the workpiece passing through, namely its outer contours.
  • a workpiece presses with its edges against the press belt 10 and lifts it on a surface which corresponds to the surface of the workpiece passing through.
  • pressure medium which now flows into the outer pressure chamber 22, presses the press belt 10 against the workpiece that is passing through.
  • the holding part (screw part) 16 shows, in addition to the holes 36 for supplying the pressure medium into the inner pressure chamber 20, further holes 41 which open and close, depending on the height setting of the inner frame 14, which is directly controlled in its position by the workpiece passing through.
  • the inner socket 14 lifts through the workpiece edge and releases the lower bores 41, so that pressure medium can also flow into the outer pressure chamber 22 and there, as in the embodiment according to FIG presses the workpiece through. With the passage of the rear edge of the workpiece, the inner socket 14 lowers and thereby closes the bores 41.
  • the inner socket 14 can include the holding part 16 with a snug fit. If there is a small gap between the outer wall of the holding part 16 and the inner socket 14 can not be removed in practice, it is expedient and preferred to insert a sealing ring 42 in this gap, in order to prevent accidental inflow of pressure medium from the inner chamber 20 into the outer chamber 22 avoid,

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Spray Control Apparatus (AREA)
  • Coating Apparatus (AREA)
EP81101787A 1980-03-14 1981-03-11 Dispositif pour exercer une pression de surface sur des pièces d'usinage en mouvement Expired EP0036176B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81101787T ATE14693T1 (de) 1980-03-14 1981-03-11 Vorrichtung zum aufbringen einer flaechenpressung auf fortschreitende werkstuecke.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19803009770 DE3009770A1 (de) 1980-03-14 1980-03-14 Vorrichtung zum aufbringen einer flchenpressung auf fortschreitende werkstuecke
DE3009770 1980-03-14
DE19803048839 DE3048839A1 (de) 1980-12-23 1980-12-23 "vorrichtung zum aufbringen einer flaechenpressung auf fortschreitende werkstuecke"
DE3048839 1980-12-23

Publications (3)

Publication Number Publication Date
EP0036176A2 true EP0036176A2 (fr) 1981-09-23
EP0036176A3 EP0036176A3 (en) 1982-02-03
EP0036176B1 EP0036176B1 (fr) 1985-08-07

Family

ID=25784296

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81101787A Expired EP0036176B1 (fr) 1980-03-14 1981-03-11 Dispositif pour exercer une pression de surface sur des pièces d'usinage en mouvement

Country Status (4)

Country Link
US (1) US4384516A (fr)
EP (1) EP0036176B1 (fr)
ES (1) ES8205378A1 (fr)
FI (1) FI75116C (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0088978A3 (en) * 1982-03-11 1984-01-04 Cassella Aktiengesellschaft Supporting materials coated with dispersions of aminoplast resins, and their transformation into laminates
EP0128968A1 (fr) * 1983-06-16 1984-12-27 Constructiewerkhuizen De Mets N.V. Presse à travail en continu

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63136921U (fr) * 1987-03-02 1988-09-08
ATA185093A (de) * 1993-09-14 2000-06-15 Danubia Petrochem Polymere Doppelbandpresse mit hydrostatischer bandstütze
DE10210357B4 (de) * 2002-03-08 2005-12-22 Voith Paper Patent Gmbh Walzenanordnung
CN104942957B (zh) * 2015-06-15 2017-07-07 浙江长兴森大竹木制品有限公司 一种重竹地板压机装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3547742A (en) * 1967-02-23 1970-12-15 Us Plywood Champ Papers Inc Laminator apparatus
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
US3970515A (en) * 1973-11-05 1976-07-20 Beloit Corporation Controlled sequence pressure nip
DE2511873C3 (de) * 1975-03-18 1978-09-21 Kuesters, Eduard, 4150 Krefeld Presse zur Ausübung einer Flächenpressung
DE2536476A1 (de) * 1975-08-16 1977-02-17 Kuesters Eduard Presse zur ausuebung einer flaechenpressung
DE2735142C3 (de) * 1977-08-04 1981-03-19 Kurt 7218 Trossingen Held Kontinuierlich arbeitende Presse
DE2907087C3 (de) * 1979-02-23 1981-10-15 Held, Kurt, 7218 Trossingen Gleitflächendichtung an einer kontinuierlichen Laminiermaschine
DE2937971A1 (de) * 1979-09-20 1981-04-02 Theodor Hymmen Kg, 4800 Bielefeld Vorrichtung zum aufbringen einer flaechenpressung auf fortschreitende werkstuecke
DE2937972C2 (de) * 1979-09-20 1987-05-07 Theodor Hymmen Kg, 4800 Bielefeld Vorrichtung zum Aufbringen einer Flächenpressung auf fortschreitende Werkstücke

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0088978A3 (en) * 1982-03-11 1984-01-04 Cassella Aktiengesellschaft Supporting materials coated with dispersions of aminoplast resins, and their transformation into laminates
US4532292A (en) * 1982-03-11 1985-07-30 Cassella Aktiengesellschaft Amino resin dispersions
US4533590A (en) * 1982-03-11 1985-08-06 Cassella Aktiengesellschaft Carrier materials coated with amino resin dispersions, and their further processing into laminates
EP0128968A1 (fr) * 1983-06-16 1984-12-27 Constructiewerkhuizen De Mets N.V. Presse à travail en continu

Also Published As

Publication number Publication date
FI810729L (fi) 1981-09-15
FI75116C (fi) 1988-05-09
US4384516A (en) 1983-05-24
ES500323A0 (es) 1982-06-01
FI75116B (fi) 1988-01-29
EP0036176B1 (fr) 1985-08-07
ES8205378A1 (es) 1982-06-01
EP0036176A3 (en) 1982-02-03

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