EP0036176B1 - 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
EP0036176B1
EP0036176B1 EP81101787A EP81101787A EP0036176B1 EP 0036176 B1 EP0036176 B1 EP 0036176B1 EP 81101787 A EP81101787 A EP 81101787A EP 81101787 A EP81101787 A EP 81101787A EP 0036176 B1 EP0036176 B1 EP 0036176B1
Authority
EP
European Patent Office
Prior art keywords
pressure chamber
pressure
inner frame
chamber
frame
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
EP81101787A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0036176A3 (en
EP0036176A2 (de
Inventor
Gmbh Hymmen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT81101787T priority Critical patent/ATE14693T1/de
Publication of EP0036176A2 publication Critical patent/EP0036176A2/de
Publication of EP0036176A3 publication Critical patent/EP0036176A3/de
Application granted granted Critical
Publication of EP0036176B1 publication Critical patent/EP0036176B1/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

Definitions

  • the invention relates to a device for applying a surface pressure to progressive workpieces as defined in the preamble of claim 1.
  • the invention has for its object to provide a device in which the seals are formed without joints or joints and executed 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 is also intended to directly control the pressure medium flowing into the many outer pressure chambers and thus the movement of the many inner sockets which 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.
  • these measures consist in the fact that the screw part of the pressure chamber has a central blind hole extending from the pressure plate and several radial holes connecting the central hole to the inner pressure chamber, so that in the event of a pressure drop in the outer pressure chamber due to the escape of compressed air, the force resulting from the pressure forces of the inner pressure chamber and the outer pressure chamber, the inner frame with the sealing strips pushing on the passband, becomes greater.
  • the invention thus consists in the arrangement of a throttle connection between the inner and the outer pressure chamber.
  • the measures according to the invention consist in the fact that a large number of small pressure chamber units, which are arranged on the effective pressure surface of the press belt and are arranged transversely to the direction of travel and can be switched on and off to adapt to the width of the workpiece, are provided , each designed in its basic form as a round body with a circular base area and divided into two pressure chambers by an outer frame attached to a common pressure plate and an inner frame concentric with it, perpendicular to the press belt, which are arranged axially one behind the other and one inner and one represent the outer pressure chamber, a distance being maintained between the outer frame and the inner frame, which is bridged by a rubber-elastic sealing ring.
  • the sealing problem can be solved particularly advantageously by a large number of 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 weather strips can be made in one piece. without joints. Due to its 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 that occur with previous seals are eliminated. Small sealing strips can also be easily replaced. By simply lining up 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 the associated shut-off device to open each time the workpiece arrives and thus a corresponding lifting of the press belt and thus one or more inner sockets of individual pressure chambers, and pressure medium not only constantly presses the inner pressure chamber but also temporarily presses the outer pressure chamber, so that the press 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 (i.e. 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 holder 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 loading of the outer pressure chamber changes in accordance with the respective (temporarily) effective width of the pressure surface (in accordance with the width of the workpiece passing through).
  • this shut-off device is designed as an O-sealing ring, which is arranged between the annular space, which is left between the inner positionally variable 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 the surfaces of the press belts 10 apply pressure there. 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 in relation 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 12 or 13.
  • 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 hole 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 15 are arranged concentrically to 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 be slightly insignificant relative to the outer socket 12 move.
  • 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 via channels 32 and 33 to the threaded bores 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 bores 36 of the screw part 16 or radial bores 37 of the screw part 17 flow 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 there against the workpiece.
  • 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 exerted on the press belt 10 parallel surface of the inner socket 14 within the pressure chamber 20. This force is counteracted by a force which is dependent on the pressure in the outer pressure chamber 22 and the surface of the inner socket 14 which is acted upon by this pressure.
  • the pressure in the outer pressure chamber 22 causes the press belt 10 to be pressed against the workpiece.
  • compressed air escapes from the outer pressure chamber 22 through a gap between the seal 24 and the press belt 10
  • compressed air can flow from the inner pressure chamber 20 through the annular space 30 with a certain throttling effect.
  • the air pressure in the outer pressure chamber 22 is then somewhat less than the pressure in the inner pressure chamber 20. If an undesired escape of compressed air from the outer pressure chamber 22 occurs during work, the pressure difference between the inner space 30 increases due to the throttling action of the annular space 30 Pressure chamber 20 and the outer pressure chamber 22, so that the resulting from the pressure forces of the inner pressure chamber 20 and the outer pressure chamber 22, the inner socket 14 with the seal 24 perpendicular to the pressure belt 10 pressing force.
  • 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 counteracted by a force which is dependent on the pressure in the outer pressure chamber 23 and the end face of the guide ring 26 which is acted upon by this pressure 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.
  • this helical compression spring 38 is conical, while the helical compression spring 39 according to FIG. 4 of the drawing is cylindrical.
  • an additional shut-off device in the form of an O-shaped, preferably elastic sealing ring 40 is activated between the head 16a and the surface 14a on the press belt side 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 rear edges of the workpiece release the inner socket 14 so that it is lowered and the annular space 30 is closed again by the sealing ring 40.
  • the outer pressure chamber 22 is depressurized and thus also the press belt 10, which is not pressed into the free space (without a workpiece). Pressure medium can then not escape in a disadvantageous manner (Fig. 7).
  • the holding part (screw part) 16 shows, in addition to the bores 36 for supplying the pressure medium into the inner pressure chamber 20, further bores 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 exemplary embodiment according to FIG. 8, the press belt against presses the workpiece through. With the passage of the rear edge of the workpiece, the inner socket 14 lowers and thus closes the bores 41.
  • the inner socket 14 can include the holding part 16 with a snug fit. If a small gap between the outer wall of the holding part 16 and the inner socket 14 cannot be eliminated in practice, it is expedient and preferred to insert a sealing ring 42 in this gap in order to prevent an unintentional inflow of pressure medium from the inner chamber 20 in to avoid the outer chamber 22.

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 Vorrichtung zum Aufbringen einer Flächenpressung auf fortschreitende Werkstücke Expired EP0036176B1 (de)

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
DE3009770 1980-03-14
DE19803009770 DE3009770A1 (de) 1980-03-14 1980-03-14 Vorrichtung zum aufbringen einer flchenpressung auf fortschreitende werkstuecke
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 EP0036176A2 (de) 1981-09-23
EP0036176A3 EP0036176A3 (en) 1982-02-03
EP0036176B1 true EP0036176B1 (de) 1985-08-07

Family

ID=25784296

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81101787A Expired EP0036176B1 (de) 1980-03-14 1981-03-11 Vorrichtung zum Aufbringen einer Flächenpressung auf fortschreitende Werkstücke

Country Status (4)

Country Link
US (1) US4384516A (fi)
EP (1) EP0036176B1 (fi)
ES (1) ES500323A0 (fi)
FI (1) FI75116C (fi)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3208728A1 (de) * 1982-03-11 1983-09-22 Cassella Ag, 6000 Frankfurt Mit aminoplastharzdispersionen beschichtete traegermaterialien und deren weiterverarbeitung zu schichtstoffen
EP0128968B1 (de) * 1983-06-16 1986-09-24 Constructiewerkhuizen De Mets N.V. Kontinuierlich arbeitende Presse
JPS63136921U (fi) * 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

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0026401A1 (de) * 1979-09-20 1981-04-08 Theodor Hymmen KG Vorrichtung zum Aufbringen einer Flächenpressung auf fortschreitende Werkstücke

Family Cites Families (8)

* 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

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0026401A1 (de) * 1979-09-20 1981-04-08 Theodor Hymmen KG Vorrichtung zum Aufbringen einer Flächenpressung auf fortschreitende Werkstücke

Also Published As

Publication number Publication date
FI810729L (fi) 1981-09-15
EP0036176A3 (en) 1982-02-03
EP0036176A2 (de) 1981-09-23
US4384516A (en) 1983-05-24
ES8205378A1 (es) 1982-06-01
ES500323A0 (es) 1982-06-01
FI75116B (fi) 1988-01-29
FI75116C (fi) 1988-05-09

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