EP0014740A1 - Roller-way dryer for wide veneers - Google Patents

Roller-way dryer for wide veneers Download PDF

Info

Publication number
EP0014740A1
EP0014740A1 EP79104465A EP79104465A EP0014740A1 EP 0014740 A1 EP0014740 A1 EP 0014740A1 EP 79104465 A EP79104465 A EP 79104465A EP 79104465 A EP79104465 A EP 79104465A EP 0014740 A1 EP0014740 A1 EP 0014740A1
Authority
EP
European Patent Office
Prior art keywords
rollers
veneers
support
roller
wide
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.)
Withdrawn
Application number
EP79104465A
Other languages
German (de)
French (fr)
Inventor
Herbert Aufderhaar
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.)
C Keller GmbH and Co KG
Keller GmbH
Original Assignee
C Keller GmbH and Co KG
Keller GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by C Keller GmbH and Co KG, Keller GmbH filed Critical C Keller GmbH and Co KG
Publication of EP0014740A1 publication Critical patent/EP0014740A1/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/02—Applications of driving mechanisms, not covered by another subclass

Definitions

  • the invention relates to a roller conveyor dryer for wide veneers, the support rollers and top rollers of which are drive-connected on one or both sides by spur gears arranged on longitudinal axes, and whose top rollers can be temporarily lifted off the support rollers in order to enable the veneers to shrink without shrinkage.
  • Such a roller conveyor dryer is known from DE-PS 17 29 459, in which one or more than one tooth gap is filled in either the top roller spur gears or the carrier roller spur gears. This causes the top rollers to lift temporarily from the support rollers, but an intermittent drive load and thus a higher wear of the drive device occurs.
  • the drying material can run during transport through the roller conveyor dryer.
  • the object of the invention is now to develop and improve a roller conveyor dryer of the type mentioned at the outset in such a way that intermittent lifting and jerky falling down of the top rollers is avoided.
  • cam discs have one or more cams, each of which is in contact with each other.
  • the cams on the cam discs are designed in such a way that a smooth, bump-free lifting and lowering of the cover rollers is ensured. So there is no shock load on the drive and the bearings.
  • the cams are arranged on the cam disks in such a way that they always meet during the rotation of the support and cover rollers and are always in contact with one another, the result is that the support and cover rollers are driven at the same speed. Therefore, the drying material does not run during transport through the roller conveyor dryer.
  • the transport rollers, the support rollers 1 and the top rollers 2 lie directly on top of one another, the veneer to be dried being transported between the support rollers 1 and top rollers 2.
  • the support and top rollers 1, 2 have longitudinal axes 3, 4, which are mounted in bearings 5, 6.
  • the support rollers 1 are driven by a drive 7, while the cover rollers 2 are moved by spur gears 8, 9 fastened on the longitudinal axes 3, 4, which can be arranged on one or both sides of the support and cover rollers 1, 2.
  • cam disks 10, 11 are arranged on the longitudinal axes, which can also be attached to the support and cover rollers 1, 2 on one or both sides.
  • the cam disks 10, 11 are located and roll against each other.
  • One, two or three cams 12 can be attached to the individual cam disks 10, 11.
  • the cover rollers 2 rest on the support rollers 1 due to their own weight and stand out from the support rollers 1 when the veneers are transported in accordance with the veneer thickness.
  • the top rollers 2 must be raised so that the veneers between the support and top rollers 1, 2 have enough space during the process of sight winding.
  • the cover rollers 2 can be gently raised and lowered again in the direction of the arrows A, so that a smooth operation is ensured.
  • the cam disks 10, 11 can be connected directly to the spur gears 8, 9 or can be mounted as separate disks in front of or behind the spur gears 8, 9 on the longitudinal axes 3, 4.
  • the arrangement of a plurality of cams 12 on the circumference of the cam disks 10, 11 ensures that the top rollers 2 lift off from the support rollers 1 several times during one revolution.
  • the cam disks 10, 11 can also be retrofitted to existing dryers.

Abstract

In a roller-way dryer for wide veneers, the support rollers and top rollers (1, 2) of which are in each case connected in terms of drive on one or both sides by spur wheels (8, 9) arranged on longitudinal shafts (3, 4), and the top rollers (2) of which can be temporarily lifted off the support rollers (1) in order to make possible a tear-free shrinking of the veneers, there are arranged close to the spur wheels (8, 9) on the longitudinal shafts (3, 4) of the support rollers and top rollers (1, 2) opposite cam plates (10, 11) which have one or more cams (12) which are at any time in contact engagement with one another. <IMAGE>

Description

Die Erfindung bezieht sich auf einen Walzenbahntrockner für breite Furniere, dessen Tragwalzen und Deckwalzen ein- oder beidseitig jeweils durch auf Längsachsen angeordneten Stirnräder antriebsmäßig verbunden sind und dessen Deckwalzen zeitweilig von den Tragwalzen abhebbar sind, um ein rissefreies Schwinden der Furniere zu ermöglichen.The invention relates to a roller conveyor dryer for wide veneers, the support rollers and top rollers of which are drive-connected on one or both sides by spur gears arranged on longitudinal axes, and whose top rollers can be temporarily lifted off the support rollers in order to enable the veneers to shrink without shrinkage.

Ein derartiger Walzenbahntrockner ist aus der DE-PS 17 29 459 bekannt, bei dem eine oder mehr als eine Zahnlücke entweder der Deckwalzen-Stirnräder oder der Tragwalzen-Stirnräder ausgefüllt ist bzw. sind. Dies bewirkt ein zeitweiliges Abheben der Deckwalzen von den Tragwalzen, wobei jedoch eine stoßweise Antriebsbelastung und damit ein höherer Verschleiß der Antriebseinrichtung auftritt.Such a roller conveyor dryer is known from DE-PS 17 29 459, in which one or more than one tooth gap is filled in either the top roller spur gears or the carrier roller spur gears. This causes the top rollers to lift temporarily from the support rollers, but an intermittent drive load and thus a higher wear of the drive device occurs.

Nachteilig ist außerdem die hohe Lagerbelastung der unteren, festliegenden Tragwalzen durch diestoßweise Anhebung der Deckwalzen beim Auftreffen des Zahnes des treibenden Stirnrades auf die ausgefüllte Zahnlücke und das anschließende ruckartige Niederfallen der Deckwalzen. Die Folge davon ist, daß die zur Lagerung verwendeten Kohlegleitlager einem höheren Verschleiß unterliegen und öfter ausgetauscht werden müssen.Another disadvantage is the high bearing load on the lower, fixed support rollers due to the fact that the cover rollers are raised in this way when the tooth of the driving spur gear hits the filled tooth gap and the subsequent jerky drop of the cover rollers. The consequence of this is that the carbon plain bearings used for storage are subject to greater wear and must be replaced more often.

Da beim Anheben der Deckwalzen diese kurzzeitig nicht mit der den Tragwalzen gleichen Geschwindigkeit umlaufen, kann ein Verlaufen des Trockengutes während des Transportes durch den Walzenbahntrockner vorkommen.Since when the top rollers are lifted they do not run at the same speed as the carrier rollers for a short time, the drying material can run during transport through the roller conveyor dryer.

Die Aufgabe der Erfindung besteht nun darin, einen Walzenbahntrockner der eingangs erwähnten Art so weiterzubilden und zu verbessern, daß ein stoßweises Anheben und ein ruckartiges Niederfallen der Deckwalzen vermieden wird.The object of the invention is now to develop and improve a roller conveyor dryer of the type mentioned at the outset in such a way that intermittent lifting and jerky falling down of the top rollers is avoided.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß nahe der Stirnräder auf den Längsachsen der Trag- und Deckwalzen sich gegenüberliegende Nockenscheiben angeordnet sind.This object is achieved in that opposite cam disks are arranged near the spur gears on the longitudinal axes of the support and cover rollers.

Ein weiteres Merkmal der Erfindung besteht darin, daß die Nockenscheiben ein oder mehrere Nocken besitzen, die jeweils im Berühfungseingriff miteinander sind.Another feature of the invention is that the cam discs have one or more cams, each of which is in contact with each other.

Die Nocken auf den Nockenscheiben sind so ausgebildet, daß ein weiches stoßfreies Abheben und Absenken der Deckwalzen gewährleistet ist. Es tritt also keine Stoßbelastung des Antriebes und der Lager auf.The cams on the cam discs are designed in such a way that a smooth, bump-free lifting and lowering of the cover rollers is ensured. So there is no shock load on the drive and the bearings.

Da die Nocken derart auf den Nockenscheiben angeordnet sind, daß sie während des Umlaufes der Trag und Deckwalzen immer aufeinandertreffen und immer im Berührungseingriff miteinander sind, ist erreicht, daß die Trag-und Deckwalzen mit gleicher Geschwindigkeit angetrieben werden. Ein Verlaufen des Trockengutes während des Transportes durch den Walzenbahntrockner kommt deshalb nicht vor.Since the cams are arranged on the cam disks in such a way that they always meet during the rotation of the support and cover rollers and are always in contact with one another, the result is that the support and cover rollers are driven at the same speed. Therefore, the drying material does not run during transport through the roller conveyor dryer.

Da die Nockenscheiben genau an den Abrollradius der Zahnflanken bei der Teilkreis- und Eingriffswinkel- änderung angepaßt sind, sind die Stirnräder immer im Eingriff, so daß die Trag- und Deckwalzen mit gleichmäßiger Geschwindigkeit umlaufen.Since the cam discs precisely match the rolling radius of the tooth flanks at the pitch circle and pressure angle Change are adjusted, the spur gears are always engaged so that the support and top rollers rotate at a constant speed.

In der Zeichnung ist ein Ausführungsbeispiel des Gegenstandes der Erfindung näher veranschaulicht. In dieser zeigt

  • Fig. 1 eine Vorderansicht eines Tragwalzen- und Deckwalzenpaares mit den erfindungsgemäß ausgebildeten Nockenscheiben,
  • Fig. 2 ein Nockenscheibenpaar mit jeweils einem auf den Umfang einer Nockenscheibe angeordneten Nocken und
  • Fig. 3 und Fig. 4 jeweils ein Nockenscheibenpaar mit jeweils zwei und drei auf dem Umfang einer Nockenscheibe angeordneten Nocken.
In the drawing, an embodiment of the object of the invention is illustrated in more detail. In this shows
  • 1 is a front view of a pair of support rollers and top rollers with the cam discs designed according to the invention,
  • Fig. 2 shows a pair of cams, each with a cam arranged on the circumference of a cam and
  • 3 and 4 each show a pair of cams with two and three cams arranged on the circumference of a cam.

Beim Walzenbahntrockner liegen die Transportwalzen, die Tragwalzen 1 und die Deckwalzen 2 unmittelbar aufeinander, wobei das zu trocknende Furnier zwischen Tragwalzen 1 und Deckwalzen 2 transportiert wird.In the roller conveyor dryer, the transport rollers, the support rollers 1 and the top rollers 2 lie directly on top of one another, the veneer to be dried being transported between the support rollers 1 and top rollers 2.

Die Trag- und Deckwalzen 1, 2 besitzen Längsachsen 3, 4, die in Lager 5, 6 gelagert sind. Die Tragwalzen 1 werden durch einen Antrieb 7 angetrieben, während die Deckwalzen 2 durch auf den Längsachsen 3,4 befestigten Stirnräder 8,9, die ein- oder auch beidseitig der Trag- und Deckwalzen 1,2 angeordnet sein können, bewegt werden.The support and top rollers 1, 2 have longitudinal axes 3, 4, which are mounted in bearings 5, 6. The support rollers 1 are driven by a drive 7, while the cover rollers 2 are moved by spur gears 8, 9 fastened on the longitudinal axes 3, 4, which can be arranged on one or both sides of the support and cover rollers 1, 2.

Neben den Stirnrädern 8,9 sind auf den Längsachsen 3,4 Nockenscheiben 10, 11 angeordnet, die ebenfalls ein- oder beidseitig der Trag- und Deckwalzen 1,2 angebracht werden können. Die Nockenscheiben 10,11 befinden und gegenseitig aufeinander abrollen. Auf den einzelnen Nockenscheiben 10,11 können jeweils ein, zwei oder drei Nocken 12 angebracht sein.In addition to the spur gears 8.9, 3.4 cam disks 10, 11 are arranged on the longitudinal axes, which can also be attached to the support and cover rollers 1, 2 on one or both sides. The cam disks 10, 11 are located and roll against each other. One, two or three cams 12 can be attached to the individual cam disks 10, 11.

Die Deckwalzen 2 liegen durch das Eigengewicht auf den Tragwalzen 1 auf und heben sich beim Transport der Furniere entsprechend der Furnierstärke von den Tragwalzen 1 ab.The cover rollers 2 rest on the support rollers 1 due to their own weight and stand out from the support rollers 1 when the veneers are transported in accordance with the veneer thickness.

Da die Furniere beim Trocknen schwinden und die Trocknung rißfrei erfolgen soll, müssen die Deckwalzen 2 angehoben werden, damit die Furniere zwischen Trag- und Deckwalzen 1,2 genügend Platz beim Sehwindungsprozeß haben.Since the veneers shrink during drying and the drying should take place without cracks, the top rollers 2 must be raised so that the veneers between the support and top rollers 1, 2 have enough space during the process of sight winding.

Durch die Anbringung der Nockenscheiben 10,11 auf den Längsachsen 3,4 ein-oder beidseitig der Trag- und Deckwalzen 1,2 können die Deckwalzen 2 sanft in Richtung der Pfeile A angehoben und wieder abgesenkt werden, so daß eine stoßfreie Arbeitsweise gewährleistet ist.By mounting the cam disks 10, 11 on the longitudinal axes 3, 4 on one or both sides of the support and cover rollers 1, 2, the cover rollers 2 can be gently raised and lowered again in the direction of the arrows A, so that a smooth operation is ensured.

Die Nockenscheiben 10,11 können direkt mit den Stirnrädern 8,9 verbunden sein oder als separate Scheiben vor oder hinter den Stirnrädern 8,9 auf den Längsachsen 3,4 montiert werden.The cam disks 10, 11 can be connected directly to the spur gears 8, 9 or can be mounted as separate disks in front of or behind the spur gears 8, 9 on the longitudinal axes 3, 4.

Durch die Anordnung mehrerer Nocken 12 auf den Umfang der Nockenscheiben 10,11 wird erreicht, daß die Deckwalzen 2 bei einer Umdrehung mehrmals von den Tragwalzen 1 abheben.The arrangement of a plurality of cams 12 on the circumference of the cam disks 10, 11 ensures that the top rollers 2 lift off from the support rollers 1 several times during one revolution.

Die Nockenscheiben 10,11 können auch an vorhandene Trockner nachträglich angebracht werden.The cam disks 10, 11 can also be retrofitted to existing dryers.

Claims (2)

1. Walzenbahntrockner für breite Furniere, dessen Tragwalzen und Deckwalzen ein- oder beidseitig jeweils durch auf Längsachsen angeordneten Stirnräder antriebsmäßig verbunden sind und dessen Deckwalzen zeitweilig von den Tragwalzen abhebbar sind, um ein rissefreies Schwinden der Furniere zu ermöglichen,
dadurch gekennzeichnet, daß nahe der Stirnräder 8,9 auf den Längsachsen (3,4) der Trag- und Deckwalzen (1,2) sich gegenüberliegende Nocken - scheiben (10,11) angeordnet sind.1. roller conveyor dryer for wide veneers, the support rollers and top rollers of which are connected on one or both sides by drives arranged on spur gears arranged on longitudinal axes and whose top rollers can be temporarily lifted off the support rollers in order to enable crack-free shrinkage of the veneers,
characterized in that cam disks (10, 11) lying opposite one another are arranged near the spur gears 8, 9 on the longitudinal axes (3, 4) of the support and cover rollers (1, 2). 2. Walzenbahntrockner nach Anspruch 1,
dadurch gekennzeichnet, daß die Nockenscheiben (10,11) ein oder mehrere Nocken (12) besitzen, die jeweils im Berührungseingriff miteinander sind.2. roller conveyor dryer according to claim 1,
characterized in that the cam disks (10, 11) have one or more cams (12), each of which is in contact with one another.
EP79104465A 1979-02-17 1979-11-13 Roller-way dryer for wide veneers Withdrawn EP0014740A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792906168 DE2906168B1 (en) 1979-02-17 1979-02-17 Roller dryer for wide veneers
DE2906168 1979-02-17

Publications (1)

Publication Number Publication Date
EP0014740A1 true EP0014740A1 (en) 1980-09-03

Family

ID=6063202

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79104465A Withdrawn EP0014740A1 (en) 1979-02-17 1979-11-13 Roller-way dryer for wide veneers

Country Status (2)

Country Link
EP (1) EP0014740A1 (en)
DE (1) DE2906168B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111963643A (en) * 2020-08-14 2020-11-20 木木链(深圳)科技有限公司 Helical gear rolling type transmission structure
CN112944808A (en) * 2021-03-10 2021-06-11 黄山市神耘节能设备制造有限公司 Flat tea pressing and drying equipment

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3030272C2 (en) * 1980-08-09 1982-09-16 Babcock-BSH AG vormals Büttner-Schilde-Haas AG, 4150 Krefeld Plant for drying veneers
CN108507278B (en) * 2018-03-29 2019-11-05 宁波希奇服饰有限公司 One kind, which is dyed cloth, expects drying wrap-up

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE522028C (en) * 1931-03-30 Arthur Schneider Machine for drying veneers
CH162210A (en) * 1932-06-13 1933-06-15 Fibroplast G M B H Gear drive for the rollers of roller dryers for plates with highly variable thickness.
DE1729459B1 (en) * 1967-04-28 1972-03-16 Buettner Schilde Haas Ag Roller conveyor dryer for wide veneers

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE522028C (en) * 1931-03-30 Arthur Schneider Machine for drying veneers
CH162210A (en) * 1932-06-13 1933-06-15 Fibroplast G M B H Gear drive for the rollers of roller dryers for plates with highly variable thickness.
DE1729459B1 (en) * 1967-04-28 1972-03-16 Buettner Schilde Haas Ag Roller conveyor dryer for wide veneers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111963643A (en) * 2020-08-14 2020-11-20 木木链(深圳)科技有限公司 Helical gear rolling type transmission structure
CN112944808A (en) * 2021-03-10 2021-06-11 黄山市神耘节能设备制造有限公司 Flat tea pressing and drying equipment

Also Published As

Publication number Publication date
DE2906168B1 (en) 1980-02-07

Similar Documents

Publication Publication Date Title
DE3406719C2 (en)
DE3624878C2 (en)
DE2632455C3 (en) Device for extending and retracting the inking unit and the forme cylinder of a rotogravure printing machine
DE60009844T2 (en) Conveying direction switching device in a roller conveyor
DE2062506B2 (en) TRANSPORT DEVICE FOR PLASTIC FILMS IN THERMOFORMING MACHINES OR DGL
DE4105273A1 (en) DEVICE FOR STACKING PACKING UNITS
DE2316615A1 (en) AUTOMATIC TRANSPORT DEVICE
DE2638325C2 (en)
EP0014740A1 (en) Roller-way dryer for wide veneers
DE2233095B2 (en) Transport device for paper webs provided with transport holes on the side edges in a printing unit of a booking machine, data processing system or the like
DE1756268A1 (en) Device for storing attachable workpieces, such as tubes
DE2748569C3 (en) Device for automatic loading of a separating device
DE2237457C2 (en) Locking device for anode transport frame
DE3153191C2 (en) Heat sealing machine
DE729825C (en) Portable belt conveyors composed of several single belt conveyors arranged one behind the other
DE1940414C3 (en) Roll stand with a device for changing rolls
DE2728739C3 (en) Transfer unit for conveyor tracks
DE2405954C3 (en) Device for turning with simultaneous transverse conveying of prismatic or nearly prismatic rolling stock
DE2522348C2 (en) Roller conveyor curve
DE2540947C2 (en)
DE3221343A1 (en) Device for storing tubular paper packages
DE2324940C3 (en) Slewing gear for a slewing crane
DE3724636C2 (en) Impeller bearing
DE3119647A1 (en) DEVICE FOR CHANGING THE CONE ROLLERS OF AN ANGLE ROLLER
DE2341347A1 (en) PRINTING UNIT FOR DATA PROCESSING MACHINES, WORKING IN ACCORDANCE WITH THE ROLLED PRINTING PROCESS

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT CH FR IT

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19811118

RIN1 Information on inventor provided before grant (corrected)

Inventor name: AUFDERHAAR, HERBERT