EP0512300B1 - Presse, notamment presse de placage - Google Patents

Presse, notamment presse de placage Download PDF

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Publication number
EP0512300B1
EP0512300B1 EP92106705A EP92106705A EP0512300B1 EP 0512300 B1 EP0512300 B1 EP 0512300B1 EP 92106705 A EP92106705 A EP 92106705A EP 92106705 A EP92106705 A EP 92106705A EP 0512300 B1 EP0512300 B1 EP 0512300B1
Authority
EP
European Patent Office
Prior art keywords
press
pressing
conveying
plate
gap
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
EP92106705A
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German (de)
English (en)
Other versions
EP0512300A1 (fr
Inventor
Gerald Handke
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.)
Gottfried Joos Maschinenfabrik GmbH and Co
Original Assignee
Gottfried Joos Maschinenfabrik GmbH and Co
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.)
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Publication date
Application filed by Gottfried Joos Maschinenfabrik GmbH and Co filed Critical Gottfried Joos Maschinenfabrik GmbH and Co
Publication of EP0512300A1 publication Critical patent/EP0512300A1/fr
Application granted granted Critical
Publication of EP0512300B1 publication Critical patent/EP0512300B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D3/00—Veneer presses; Press plates; Plywood presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D3/00—Veneer presses; Press plates; Plywood presses
    • B27D3/04—Veneer presses; Press plates; Plywood presses with endless arrangement of moving press plates, belts, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/20—Moulding or pressing characterised by using platen-presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/30—Feeding material to presses

Definitions

  • the invention relates to a press according to the preamble of claim 1.
  • Equipment is provided for it, in particular for surface presses which have movable parts lying approximately in the plane of the press nip, engaging therein or transversely to a loading direction next to the press nip, which parts e.g. for transporting the pressed material, for holding or also for transporting at least one press insert as a separating and / or smoothing agent or for other purposes.
  • Presses of this type are used in particular for attaching laminates to large-area workpieces, namely, for example, of veneers on panel bodies made of wood-like materials. In contrast to forming presses, they therefore work in the manner of clamping devices with a relatively low specific surface back. Usually at least one pressing surface is formed by an electrically heated heating plate.
  • FR-A-1 544 828 shows a press with a heating plate and transport members guided on both sides thereof, the pressing and heating plate being fastened to the press frame with lateral supports and being able to be raised with a press plate mounted on the press frame.
  • the invention is further based on the object of avoiding disadvantages of known designs and, in particular, of providing equipment for a press which, with a simple, compact and easy-to-maintain or convertible structure, makes it possible to provide movable parts in the area of the press nip.
  • a high surface smoothness of the material to be pressed can be achieved, for example, by adding a relatively thin, heat-resistant film made of plastic or the like, for example tetrafluoroethylene, between the corresponding side of the material to be pressed and the pressing surface of the press, which lies directly on the surface of the material to be pressed and transfers the pressure.
  • a relatively thin, heat-resistant film made of plastic or the like for example tetrafluoroethylene
  • Such presses with motor-driven transport means which have a feed device for feeding the pressed material into the press nip, an alignment device for accurately positioning the pressed material in the press nip or for transporting the pressed material out of the press nip and / or a removal device for carrying away of the pressed material from the press, these devices expediently connecting approximately horizontally and the feed device can serve as a coating station for preparing the material to be pressed before entering the press nip.
  • Two adjacent devices can be driven independently of each other and controlled by control means depending on the closed and / or open state of the press so that the feed device and the aligning device run together until the exact position of the material to be pressed and are then shut down together. that only then the closing movement of the press is possible or is triggered and during the pressing process the feed device for material preparation can be driven alone and that the press finally opens by itself via a time switch, after which the aligning device moves the pressed material out of the press and simultaneously prepared press material moves into the press nip.
  • the positioning or aligning device can travel at a lower starting speed at the start of its working movement and, after a predetermined partial path, can be converted uniformly to an increased running speed, from which it is then decelerated to a standstill again until the end position is reached.
  • the press is only released for opening and closing in this end position, which represents the end of a work cycle of the alignment device.
  • the above-mentioned parts can be guided around the associated press plate, in particular if the parts are circumferential and possibly endlessly closed, so that the side is at least partially wrapped around at least one such part.
  • the press plate is the component that transmits the pressing pressure, which acts only on one or more localized points through the press drive, for example press-cylinder units, without deformation to the pressing material or the pressing surface and for this purpose is formed over the entire press field with appropriate bending and compressive strength.
  • At least one pressure plate is formed by a multi-level plate
  • a pressure plate as in the case of a single-daylight press, can be formed by a press table which is driven by the press drive or which is stationary relative to the press frame during the pressing process. If this is encircled by the rotating parts, problems can arise when guiding these parts, and a relatively large amount of space is required, the parts running across relatively large heights transversely to the press plane and being easily damaged as a result. In addition, the assembly and disassembly and thus the conversion of the press is difficult in this case.
  • the rotating parts must be very long here, and deflections on at least four axes are required, with synchronous running on both sides of the material being pressed being difficult. The parts get dirty and wear easily.
  • the respective movable part can be guided at one or both ends of the press nip essentially only by a single deflection, and in the case of several movable parts, their deflections at the respective end essentially in a single, approximately parallel to the plane of the press nip and approximately perpendicular to the transport direction Axis. Furthermore, the respective movable part can be carried or guided exclusively by the base body, so that disassembly and assembly as a closed assembly is possible without components having to be dismantled in order to detach the movable part from the associated press plate.
  • the movable part laterally outside of the outer cracks of the press field or the press surface or the press plate, it can encircle the press plate in side view, but this, seen in the direction of transport, does not engage in the movable part, so that here too advantages mentioned.
  • all of the above-mentioned movable parts can be substantially closer to the press nip than the side of the associated press plate facing away from it or from its mounting or mounting on the press frame.
  • the transport unit is expediently a self-contained, plate-like, flat unit independent of at least one of the two opposing press tables directly on the press frame, in particular on frame columns supported or displaceably guided, with guide bodies arranged on the side of the transport unit being able to engage in the same guide surfaces on which the press tables are also fastened with corresponding holding or guide bodies or are displaceably guided to carry out the pressing stroke.
  • the transport unit does not require any form-fitting direct connection to the press plate, but it can only be supported against it by two-dimensional contact of two facing surfaces, which are expediently at least approximately as large as the press field and are congruent with it.
  • the transport unit can be provided with a releasable fixing, independent of this press table, in relation to the press frame in a working position, in which the press table then moves through the press drive can be lifted off the transport unit.
  • the fixing can only be made by means of stops on the press frame on which the transport unit is seated when the press table is lowered, after which only the press table with the press drive of the lower-piston press is lowered with a further lowering movement.
  • the film be part of an endless traction element that passes through the gap between the transport unit or its base body and the associated press plate.
  • the film part not directly participating in the pressing process can lie in this gap during the pressing process, so that the pressing pressure is transmitted exclusively via it from the press plate to the transport unit and this film part thereby forms a thin, slightly pressure-elastic compensation layer under the pressures that occur.
  • Means are advantageously provided in order to relieve the respective part running approximately in the plane of the press nip from those tensile forces which can be caused by weight forces, namely in particular by the weight forces of the sections of this part lying outside the press plane. If the respective one of these parts forms a longitudinal strand approximately in the area of the plane of the press nip and a counter-rotating longitudinal strand further away from this level, this is appropriately secured so that its weight does not or only insignificantly contribute to increasing the tension of the other longitudinal strand.
  • the tension of the last-mentioned longitudinal strands can thus be precisely determined independently of such weight forces by means of a tensioning device, which expediently, like a motor drive, belongs entirely to the structural unit mentioned.
  • the base body is advantageously designed in the form of a frame, wherein it has two outermost longitudinal frames which, as transverse frames, essentially only have the deflections which are expediently rotatably mounted on them in the region of their ends.
  • a multi-layer, plate-shaped heating insert which is to be detached from the frame as a subassembly, forms the pressing or heating surface and is preferably a stiffening plate for direct support on the associated pressing plate or on the back of this subassembly
  • Has hollow or hollow chamber profile which protrudes laterally slightly beyond the pressing surface transversely to the transport direction, but in the transport direction is essentially flush with the associated boundary edges of the pressing surface.
  • a form-fitting synchronous device is expediently provided for the press table, by means of which a precisely translatory or plane-parallel movement of the press table is ensured over its entire extent.
  • This synchronizing device can e.g. be formed in accordance with DE-GM 87 14 804, to which reference is made to include the corresponding features and effects in the present invention.
  • the invention also relates to a transport unit for arrangement in the area of the press nip of a press, which, including the mentioned deflections, guides, drive means and / or supporting or pressing surfaces and possibly the further components, forms a self-contained structural unit, which preferably forms bearing bodies for immediate Has storage on the press frame.
  • the transport unit 1 is preferably intended for a press 2 which processes the pressed material in an approximately straight pass and which has a press frame 3 with, for example, four at a distance from one another frame columns standing at the corners of an imaginary square, having a console 5 connecting them in the base area as a foundation and an upper beam 6 connecting their upper ends.
  • a press frame 3 with, for example, four at a distance from one another frame columns standing at the corners of an imaginary square, having a console 5 connecting them in the base area as a foundation and an upper beam 6 connecting their upper ends.
  • two approximately horizontal, approximately vertically opposing press plates 7, 8 of essentially the same size are provided, which between their facing press surfaces 9 limit the narrowing and expandable press nip 10, in which the transport unit 1 is also inserted that it protrudes in the transport direction over the press frame or the associated frame columns 4, but lies transversely to it between the frame columns 4.
  • the lower pressing plate 7 is designed as a lifting table 11 and this is also assigned to the transport unit 1 so that it forms the lower pressing surface opposite the pressing surface 9 of the other pressing plate 8.
  • the lifting table 11, which is shorter and narrower than the transport unit 1, is displaceably supported transversely to its plane with guide bodies 12 projecting laterally beyond its side edges on guides 13 of the press frame 3, which are provided in the manner of rails on the sides of the frame columns 4 facing away from one another in the transport direction.
  • a press drive 14 with a plurality of cylinder units 15 is provided on the underside of the lifting table 11 facing away from the press nip 10 in the console 5, said cylinder drive 15 engaging with its piston rods on the underside or rear side of the lifting table 11, so that the latter over its other , provided as a substantially continuously flat support surface 16 plate surface, the transport unit 1 can take as a whole by being on a corresponding, essentially continuously continuous Complementally flat counter surface 17 of the transport unit 1 rests.
  • the transport unit 1 is also guided on the guides 13 with guide bodies 18 projecting laterally beyond their outer sides in the guide direction with respect to the guide bodies 12.
  • the transport unit 1 strikes with corresponding counter surfaces on stops 19 of the press frame 3, which are expediently fastened to the outside of the frame columns 4 and, if necessary, can be adjusted continuously or in steps in the pressing direction.
  • the transport unit 1 is fixed in its starting position only by its weight, and the lifting table 11 can retract from the transport unit 1 by a certain distance without the need for separate lifting means for this separation.
  • the transport unit 1 has a base structure 20 as a load-bearing structure, which, however, is designed in the form of a frame in such a way that its frame frames are laterally adjacent outside the press nip 10 and therefore do not participate in the transmission of the pressing forces.
  • Two frame frames are formed by strip-shaped side frames 21 which are arranged in a cross-section and are connected to one another at their ends via deflections 22, 23 rotatably mounted on them.
  • the front deflection 22 in the transport direction is driven directly by an axially co-operating drive 24, which is flanged to the outside of one of the side frames 21 with an angular gear 25, on the underside of which a drive motor 26 is attached in the region of the outlet end of the transport unit 1 is.
  • Each deflection 22, 23 has two drive wheels 27 in the form of toothed sprockets, which are located at a short distance adjacent to the inside of each side frame 21, with each of the two drive wheels 27 of both deflections 22, 23 lying approximately in a common plane, a ring-shaped closed drive Tension member 28 is placed in the form of a roller chain.
  • Each deflection also has a deflecting roller 29, which is connected to the associated drive wheels 27 in the same axis and is fixed in terms of rotation, which is located between the side frames 21 or the associated drive wheels 27 and is cylindrical.
  • the drive wheels 27 and traction elements 28 lie laterally outside the press nip 10, and the side frames extend below the counter surface 17.
  • the two deflection rollers is formed from two separate film sections, also substantially annularly closed shim 30, which is secured against the respective deflection in a form-fitting manner and is otherwise exposed between the deflections without further attachment.
  • the two traction elements 28 are positively connected to one another with respect to the transport movement by means of two cross connections 31, between which sections of the traction elements 28 are of equal length in both running directions.
  • Each of the two essentially identical cross-connections 31 has two brackets 32, 33 lying one behind the other in the transport direction approximately in the same running plane, so that the two ends of each film section can be attached to and detached from a separate bracket independently of the other.
  • Each holder 32 or 33 has a profile rod 34 approximately parallel to the deflection axes in the form of, for example, an extrusion profile or a tube with a square outer cross section, which is provided on each cross-sectional side an undercut longitudinal groove 35, for example a dovetail groove, which widens in cross section to the base of the groove and extends over its entire length, and optionally forms a cylindrical longitudinal channel lying in the profile axis in the cross-sectional center.
  • the two adjacent ends of the support rods are each inserted with their inner profile on a plug pin of a common bearing piece 36 and secured against this by bracing.
  • the respective bearing piece 36 is fastened in the region of an outer link plate to two immediately adjacent link joints, for example chain pins, in such a way that it is rigidly fixed only in relation to a chain link.
  • the path radius of the radially inner boundaries of the cross connections 31 in the region of the deflections 22, 23 is slightly larger than half the diameter of the deflection rollers 29, so that the cross connections 31 circle the deflection rollers 29 without contact.
  • the drive wheels 27 or the approximately rectilinear sections of the tension members 28 lying between them do not protrude beyond the longitudinal edges or end edges of the side frames 21, while the cross-connections 31 in the respective position protrude beyond one or all of these edges, so that they are easily accessible.
  • the end of the respective film section of the shim web 30 is wound onto the associated profile rod 34, which can be rotated about its central axis relative to its bearing pieces and can be designed to be fixable in any position.
  • the end of the film is brought up to the associated profile rod 34 in such a way that it surrounds the profile rod 34 against the direction of deflection at the deflections 22, 23 and thereon with one or more closely fitting turns can be wound tight.
  • longitudinally displaceable clamping means can be used, with which the film end is fixed in position.
  • the respective film section is also deflected over a number of angular degrees on the associated deflecting roller 29, even when the associated holder or cross-connection 31 is located on the outer apex of the associated deflection 22 or 23, and thereby guided by the latter, so that the film section the deflection located in its area cannot span without contact.
  • At least one longitudinal body 37 extending approximately over its entire length between the deflections 22, 23 can be arranged on the inside of the respective side frames 21, the longitudinal bodies 37 being provided for supporting the components of the base body lying within the base body frame.
  • the upper dreams 42 of the traction elements 28 facing the press nip 10 are guided on rails 38 of the base body 20, on which the traction elements 28 with their link rollers lying between the link plates in the link joint axes are below them Weight force run and against which they are positively secured against lateral movements by the chain straps encompassing on both sides.
  • the outer chain links, each facing closer to adjacent side frame 21, run in a groove 39 which, like the running rail 38, can be formed by the associated longitudinal body 37.
  • the shim 30 also forms an upper run 40 which delimits the effective press nip 10 on the associated side and on the back or underside of the base body 20 facing away therefrom, a lower run 41 lying further away from the press nip 10, which lies between the deflections 22, 23 approximately parallel to the upper run 40 and taut without contact between the deflections 22, 23 without further attachment can run tense.
  • This run 41 as well as the associated lower runs 43 of the tension members 28 are guided to the exclusion of the associated press plate 7 around the base body 20, that is to say that the transport unit 1 can be changed in position with respect to the press plate 7 without changing the state of these movable parts .
  • two tensioning devices 44 which can be adjusted independently of one another are provided and are assigned to the rear deflection 23 in the transport direction.
  • Their deflecting roller 29 and drive wheels 27 are rotatably mounted on two tensioning carriages 45, which can be continuously adjusted in the longitudinal direction on the opposite sides of the side frames 21 with tensioning spindles 46, so that all dreams can be tensioned together.
  • a tension relief 47 is provided for the respective lower run 43.
  • this has a support rail 48 arranged on the associated longitudinal body 37, on which the lower run is guided essentially in the manner described with reference to the running rails 38 and is thus relieved of its own weight.
  • the base body 20 With a contact-free distance between the deflections 22, 23 and essentially completely between the longitudinal or side frames 21, the base body 20 carries a pressure-resistant, plate-shaped transmission unit 50 for transmitting the pressing pressure from the pressing plate 7 to the material to be pressed.
  • the transmission unit 50 can form a stiffening connection between the side frames 21 or the longitudinal bodies 37 or can be detachable from the base body 20 as a self-contained subassembly or can be inserted therein.
  • the essentially uppermost layer of the multi-layer transmission unit 50 is formed by a metallic heating plate 51 provided with embedded electrical heating resistors and controlled via embedded temperature sensors, the size of which is substantially equal to that of the effective pressing field.
  • a heating plate which is heated with liquid media can also be used.
  • the heating plate 51 lies with the interposition of a foil-like insert 52 on an insulation plate 53 which is thicker than it, which can be formed by a particle board 53.
  • This is in turn with the interposition of an insert 54 of the type mentioned on a base plate 55, which is designed as a hollow chamber profile and is composed of tubes 56 with a non-circular or angular or square cross section.
  • the insert 54 can consist of several parts lying side by side on a gap.
  • the tubes 56 of the same design are arranged at a short distance from one another or directly with their side faces abutting one another in a single position parallel to one another in such a way that they practically form a flat upper plate surface and a correspondingly continuous lower plate surface, the tubes 56 being transverse to the direction of transport and parallel to the plate plane as cross-connecting rods between the side frames 21 are arranged.
  • Adjacent pipes can be rigidly connected directly to one another by welding or the like.
  • the rest Layers accordingly have continuously flat plate surfaces and are self-adjusting braced against one another transversely to their planes with a large number of clamping devices 57 which are distributed substantially uniformly over their common plate field.
  • each clamping device 57 has a clamping bolt 58, which is countersunk into the blind hole of the heating plate 51 and is projecting transversely over the plate and which is completely countersunk within the outer surfaces of the transmission unit 50 and bores in the adjacent ones Layers, namely the insert 52, the insulating plate 53, the insert 54 and an associated wall of a tube 56 of the base plate 55 penetrates.
  • the tensioning bolt 58 carries a tensioning spring 59 placed on it, which is supported on the one hand on the inside of the plate or tube wall mentioned and on the other hand as a compression spring on an actuator 61 which is adjustable in the form of a nut on a Threaded end of the clamping bolt 58 is guided.
  • the actuator 61 lying completely inside the tube 56 is accessible with a tool from the underside of the base plate 55 through an access opening 62.
  • the shim 30 or its strand 40 with the associated web side is guided over a wide area by freely removable resting on a width which is substantially equal to the width of the heating plate 51 and all others Positions of the transmission unit 50.
  • the base plate 55 projects slightly laterally on both sides beyond these lateral boundaries, as a result of which support strips are formed with which the transmission unit 50 is supported on supports 63 of the Base body 20 can be placed or positively releasably attached to the side frames 21.
  • the supports or fastening means are expediently provided on the inner sides of the side frames 21 and can be formed by the longitudinal body 37.
  • the underside of the light-weight, but high-strength base plate 55 is thus covered with respect to the support surface 16 of the press plate 7 only by the lower run 41, which forms the counter surface 17 for the support surface 16 during the pressing process and also covers the access openings 62 with respect to the support surface 16.
  • 6 may have a laterally projecting coupling member of an electrical connection coupling which extends into the area of the associated longitudinal body 37 or the corresponding running rail 38, which is then expediently interrupted in this area by being separated by two in the longitudinal direction is formed at intervals spaced longitudinal sections.
  • a feed device 64 for the material to be pressed into the press is arranged in front of the press frame 3 or the end of the transport unit 1 formed by the non-driven deflection 23, which can be placed next to the press 2 as a separate device.
  • An approximately horizontally located covering belt 65 provided on the upper side of the feed device 64 guides the pressed material approximately at the height of the upper run 40 of the transport unit 1 with the press nip 10 open, whereby it is taken over by the transport unit 1 by friction and into the opposite of the pressing surfaces 9, 16 correct position is brought.
  • the adjustment is provided so that the pressed material, which is shorter than the distance between the cross connections 31, is completely between and at a distance from the cross connections 31 lies and is therefore only frictionally connected to the associated strand 40.
  • the traction elements 28 carry out half of a pass, so that the cross connections 31 alternately swap their locations.
  • the two cross connections 31 lie at the greatest possible distance from one another on the sides of the deflections 22, 23 which face away from one another, with them approximately jointly in an axial plane.
  • the extent of the respective cross connection 31 in the circumferential direction of the deflection is at most approximately the same size as the outer diameter of the associated deflecting roller 29.
  • the distance between the runs 40, 41 is smaller than that between the runs 42, 43, so that the runs 40, 41 do not protrude from the edges of the side frames 21 in a side view.
  • the associated uppermost surface line of the respective deflecting roller 29 is set back slightly lower than the pressing surface 60, so that the shim 30 at the end of the pressing surface 60 at the associated plate edge runs slightly inwards to the deflecting roller 29.
  • the opposite, deepest surface line of the deflecting roller 29 is also set back accordingly.
  • the actual pressing support surface of the transport unit 1, which lies directly against the material to be pressed is formed by the associated side of the shim 30 or the respective strand 40.
  • the lifting table 11 is raised by the press drive 14 until its supporting surface 16 between the side frames 21 has reached the counter surface 17 and takes the initially stationary transport unit 1 with it or lifts it from the stops 19.
  • the overall unit thus formed is then raised further, until the pressed material between the pressing support surface 70 and the pressing surface 9 is exposed to the desired pressing pressure.
  • the material to be pressed can be heated with the heating plate 51 through the strand 40 during the pressing process.
  • the lifting table 11 is lowered again with the transport unit 1 until the latter sits on the stops 19 and the lifting table 11 drops even further.
  • the strand 40 or 41 is secured in position during the closing process of the press nip 10 not only by its positive connection with the traction elements 28, but also in that the strand 41 for the most part at least almost over the entire area between the support surface 16 and the counter surface 17 is clamped under the weight of the transport unit 1.
  • Other devices for additionally fixing the shim 30 and the deflections 22, 23 are also conceivable.
  • the shim 30 is moved half a turn, the pressed material lying on the strand 40 being transferred to a removal device 66 adjoining the transport unit 1 in the transport direction 68.
  • the lower run 41 which runs via the deflection 23 to the upper run side, enters the feed device 64 at approximately the same speed hand over further material to be pressed.
  • the removal device 66 can, as described with reference to the feed device 64, be a separate device and expediently drops from the front end of the transport device 1 in the transport direction 68. For example, it has a roller conveyor 67 on which the pressed Can run away from the press 2 well under its weight.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Manufacturing & Machinery (AREA)
  • Veneer Processing And Manufacture Of Plywood (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Claims (12)

  1. Presse, notamment presse de placage (2), pour former une emprise de presse (10) pour un produit à presser dans la région d'un bâti de presse (3) préassemblé avec une surface d'appui (16), avec une unité de transport (1) qui présente une surface d'appui de pressage (70), caractérisée en ce que l'unité de transport (1) est réalisée sous la forme d'une unité modulaire préassemblée en soi fermée à recevoir dans l'emprise de presse (10), indépendante du bâti de presse (3) et de la surface d'appui (16), et des moyens sont prévus pour installer cette unité modulaire à l'état préassemblé dans le bâti de presse (3), l'unité de transport (1) présentant une contre-surface (17) opposée à la surface d'appui de pressage (70) et destinée à s'appuyer contre la surface d'appui (16) du bâti de presse (3).
  2. Presse selon la revendication 1, caractérisée en ce que la surface d'appui de pressage (70) est prévue pour délimiter sensiblement totalement l'emprise de presse (10) sur un côté de l'emprise, et l'unité de transport (1) présente au moins une voie de transport (28, 30) d'un transporteur qui passe par au moins un renvoi (22, 23) d'un corps de base (20) et qui présente des tronçons longitudinaux (40, 41 ; 42, 43) respectivement plus proches et plus éloignés de l'emprise de presse (10), et en ce qu'une plaque de pressage (7) montée sur le bâti de presse est prévue pour soutenir le corps de base (20) contre la pression de pressage, plaque qui se trouve pour l'essentiel sur le côté du corps de base (20) qui est opposé à l'emprise de presse (10), au moins un tronçon longitudinal (41, 43) du transporteur, plus éloigné de l'emprise de presse (10), étant guidé autour du corps de base (20) en excluant la plaque de pressage associée (7), et/ou au moins un tronçon longitudinal (41, 43) plus éloigné de l'emprise de presse (10) se trouvant pour l'essentiel sur le côté de cette plaque de pressage (7) qui est tourné vers l'emprise de presse (10).
  3. Presse selon la revendication 1 ou 2, caractérisée en ce qu'au moins une bande (30), telle qu'une feuille guidée dans l'emprise de presse (10), et au moins un organe de traction d'entraînement (28), tel qu'une chaîne transporteuse ou similaire circulant à côté de l'emprise de presse (10), sont prévus comme voie de transport (30, 38) de l'unité de transport (1), et en ce que, de préférence, tous les tronçons longitudinaux (40, 41 ; 42, 43) du transporteur guidés sur un corps de base (20) étant guidés uniquement sur le corps de base (20), en excluant la plaque de pressage associée (7), et passent, sur le côté tourné vers l'emprise de presse (10), devant des éléments de palier (12) par lesquels la plaque de pressage associée (7) est assemblée au bâti de presse (3).
  4. Presse selon l'une des revendications précédentes, caractérisée en ce que l'unité modulaire préassemblée présente un corps de base (20) avec au moins une voie de transport (28, 30) montée sur ce dernier, et en ce que, notamment, l'unité modulaire préassemblée présente au moins une unité supplémentaire, telle qu'une plaque chauffante (51), une plaque isolante (53), une plaque de base de profilé (55), au moins une couche compensatrice (52, 54), des renvois (22, 23), un moteur d'entraînement (26), au moins un dispositif de serrage (44) ou similaire, et doit être installée entre deux plaques de pressage (7, 8) de la presse (2) qui sont montées de façon préassemblée sur le bâti de presse (3).
  5. Presse selon l'une des revendications précédentes, caracterisée en ce que l'unité de transport (1) présente une voie de transport (30), appuyée sur une surface de plaque (60) et déplaçant le produit à presser dans l'emprise de presse (10), qui est plus longue dans la direction de transport (68) que la plaque de pressage (7) et qui, de préférence, est fixée par ses extrémités de façon détachable à des liaisons transversales (31) d'organes de traction d'entraînement (28), deux parties distinctes de la voie de transport (30), approximativement de même longueur et se raccordant sensiblement l'une à l'autre en direction longitudinale, formant les deux tronçons longitudinaux associés (40, 41) et étant fixées indépendamment l'une de l'autre à des supports (32, 33) des organes de traction d'entraînement (28).
  6. Presse selon l'une des revendications précédentes, caractérisée en ce qu'au moins une voie de transport (28, 30) de l'unité de transport (1) passe, à au moins une extrémité de l'emprise de presse (10), par un renvoi (22, 23) tel qu'un rouleau (29) qui, en position de pressage, la guide vers une fixation (32, 33) sur l'organe de traction d'entraînement (28), deux fixations (32, 33) se trouvant de préférence, en position de pressage, sur deux côtés mutuellement opposés de deux rouleaux de renvoi (29) qui, notamment, présentent respectivement un rayon de renvoi inférieur à celui du renvoi approximativement coaxial (27) pour la fixation (32, 33).
  7. Presse selon l'une des revendications précédentes, caractérisée en ce qu'au moins un tronçon longitudinal (41, 43) situé en dessous de la surface d'appui de pressage (70) de l'unité de transport (1) est soutenu sur au moins une partie de sa longueur vis-à-vis de son poids, et le tronçon longitudinal associé (40, 42) situé sur le dessus du corps de base (20) est déchargé en traction des forces massiques, les tronçons longitudinaux (42, 43) de l'organe de traction d'entraînement (28) s'étendant de préférence entre des renvois (22, 23) en étant centrés sur des glissières de soutien (38, 48).
  8. Presse selon l'une des revendications précédentes, caractérisée en ce que l'unité de transport (1) est montée sur le bâti de presse (3) à déplacement dans la direction de pressage (69) indépendamment de la plaque de pressage associée (7), notamment sur les mêmes guidages (13) que la plaque de pressage (7), et peut de préférence être soulevée par rapport à la plaque de pressage associée (7) par une immobilisation limitée par butée sur le bâti de presse (3), un tronçon longitudinal (41) de l'unité de transport (1) pouvant notamment être bloqué par serrage, en vue de son entraînement par la plaque de pressage (7), entre la surface de pressage (16) de cette dernière et une contre-surface (17).
  9. Presse selon l'une des revendications précédentes, caractérisée en ce que l'unité de transport (1) définit, entre des montants latéraux de châssis (21) et un renvoi d'entrée (23) à une extrémité ainsi qu'un renvoi de sortie (22) à l'autre extrémité, une zone de pressage avec une unité de transmission en forme de plaque (50) pour la pression de pressage qui est installée dans un corps de base (20), et en ce qu'au moins une voie de transport (30) est guidée par les renvois (23, 22) directement le long de la surface de pressage respectivement associée de l'unité de transmission (50), et/ou en ce que le tronçon longitudinal (41, 43) d'au moins une voie de transport (28, 30) qui est plus éloigné de l'emprise de presse (10) se situe, en vue de côté, pour l'essentiel totalement à l'intérieur des délimitations extérieures du corps de base (20), seulement deux unités de renvoi (23, 22), disposées l'une à la suite de l'autre dans la direction de transport (68) et se trouvant entre les montants latéraux de châssis (21), étant notamment prévues.
  10. Presse selon l'une des revendications précédentes, caractérisée en ce qu'une unité de transmission (50) pour la pression de pressage est réalisée à plusieurs couches et présente notamment une plaque de base (55) à cavité, qui est constituée au moins pour partie de tronçons tubulaires (56) disposés transversalement à la direction de transport et assemblés en une couche de plaque, la plaque de base (55) étant de préférence fixée, par des régions de bord dépassant latéralement de la zone de pressage, en portée libre aux montants latéraux de châssis (21) du corps de base (20).
  11. Presse selon l'une des revendications précédentes, caractérisée en ce que l'unité de transport (1) est conçue pour être conjointement entraînée par une table élévatrice (11) de la presse (2) qui est entraînée par un entraînement de presse (14), et elle présente notamment des corps de guidage (18) pour son montage à coulissement, au-dessus de la course de la presse, sur des guidages (13) de colonnes (4) du bâti de presse (3), l'unité de transport (1) formant de préférence une délimitation inférieure de l'emprise de presse (10) et/ou la presse (2) ne présentant une emprise de presse (10) que dans un seul plan.
  12. Presse selon l'une des revendications précédentes, caractérisée en ce qu'elle est conçue comme presse continue pour l'introduction du produit à presser à une extrémité et pour la sortie du produit pressé à l'extrémité opposée de l'emprise de presse (10), et en ce que, de préférence, l'extrémité d'entrée de l'unité de transport (1) est précédée d'un dispositif d'alimentation (64) pourvu d'une bande de garnissage (65) et/ou l'extrémité de sortie de l'unité de transport (1) est suivie d'un dispositif de transport d'évacuation (66) avec un transporteur à rouleaux (67) ou similaire descendant dans la direction de transport (68), des entraînements mutuellement indépendants (24) d'au moins deux des dispositifs (1, 64, 66) étant de préférence commandés en fonction l'un de l'autre et/ou de la position de travail de la presse (2).
EP92106705A 1991-05-07 1992-04-17 Presse, notamment presse de placage Expired - Lifetime EP0512300B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4114815 1991-05-07
DE4114815A DE4114815A1 (de) 1991-05-07 1991-05-07 Presse, insbesondere furnierpresse

Publications (2)

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EP0512300A1 EP0512300A1 (fr) 1992-11-11
EP0512300B1 true EP0512300B1 (fr) 1995-07-19

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AT (1) ATE125188T1 (fr)
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Publication number Priority date Publication date Assignee Title
DE102016119041B4 (de) * 2016-10-07 2021-01-14 Festo Ag & Co. Kg Hubtisch mit einer verschiebaren Tischplatte
CN110315603B (zh) * 2019-07-04 2024-02-27 广东英达斯列智能科技有限公司 双面同步对花压纹饰面板生产线

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1948917A (en) * 1933-04-20 1934-02-27 Int Harvester Co Gathering means for corn pickers
US2652870A (en) * 1948-01-15 1953-09-22 Gamble Brothers Inc Continuous planar type panel forming machine
US2642782A (en) * 1948-04-10 1953-06-23 Chapman Forest Utilization Inc Fiberboard forming press with loader and unloader
DE1158691B (de) * 1958-02-13 1963-12-05 Becker & Van Huellen Etagenpresse mit ortsfestem oberem Pressholm
DE1223146B (de) * 1965-04-17 1966-08-18 Siempelkamp Gmbh & Co Anlage zur beschickblechlosen Herstellung von Spanplatten, Faserplatten od. dgl.
DE1971814U (de) * 1967-07-31 1967-11-02 Heinrich Wemhoener K G Maschin Einetagen-durchlaufpresse.
DE7142730U (de) * 1971-09-09 1973-01-25 Soc Italiana Macchine Industriali S P A Warmpresse mit einem Förderband, insbesondere zum Fournieren von Teilen aus Holz oder dergleichen
DE3139580A1 (de) * 1981-10-05 1983-04-28 Maschinenfabrik J. Dieffenbacher Gmbh & Co, 7519 Eppingen Vorrichtung zum einbringen, verpressen und ausbringen eines schichtpaketes in eine heisspresse bzw. aus einer heisspresse
DE3702995A1 (de) * 1987-02-02 1988-08-11 Dieffenbacher Gmbh Maschf Heizplattenpresse in fensterrahmenbauweise
DE3735845A1 (de) * 1987-08-28 1989-03-16 Richter Klaus Dipl Ing Fh Verfahren und vorrichtung zum beschichten von spanplatten

Also Published As

Publication number Publication date
EP0512300A1 (fr) 1992-11-11
DE4114815A1 (de) 1992-11-12
DE59202905D1 (de) 1995-08-24
ATE125188T1 (de) 1995-08-15

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