DE3101005C2

DE3101005C2 - Belt conveyor

Info

Publication number: DE3101005C2
Application number: DE19813101005
Authority: DE
Inventors: Walter 6440 Bebra Münch
Original assignee: Babcock BSH AG
Current assignee: Grenzebach GmbH and Co KG
Priority date: 1981-01-15
Filing date: 1981-01-15
Publication date: 1986-01-23
Also published as: DE3101005A1

Abstract

Beim Fördern und Aufwickeln von sehr dünnen Furnierbahnen bereitet die unzureichende Eigensteifigkeit Probleme. Das Band nimmt eine mehr oder weniger wellige Form an, die bei der Wickelbildung zu Beschädigungen des Furniers führt. Bei Bandabrissen wird die Bahn durch den Luftwiderstand zurückgeschlagen, so daß die automatische Aufwicklung gestört wird. Zur Behebung dieser Nachteile wird erfindungsgemäß ein Fördertisch vorgeschlagen, der im Bereich der Bandmitte überhöht ist. Infolgedessen nimmt das Band eine leicht gewölbte Form an, die eine Versteifung bewirkt.When conveying and winding up very thin sheets of veneer, the insufficient inherent rigidity causes problems. The tape takes on a more or less wavy shape, which leads to damage to the veneer when the lap is formed. If the tape breaks, the web is knocked back by the air resistance, so that the automatic winding is disturbed. To remedy these disadvantages, a conveyor table is proposed according to the invention, which is raised in the area of the belt center. As a result, the band assumes a slightly curved shape which causes stiffening.

Description

31 öl 00531 oil 005

Stützrolle 8 an, die das zugehörige Obertrum über die Ebene der Riemen 7a, 7j anhebt Die einzelnen Stützrollen 8 sind mit Haltearmen 9, an denen die Lagerbuchsen der Stützrollen 8 befestigt sind, gemeinsam auf einem waagerechten Träger 10 angeordnet Die Abstände zwisehen Träger 10 und Stützrolle 8 nehmen stufenweise zur Mitte des Trägers hin zu und sind so bemessen, daß die Obertrume der Riemetr 7e und 7/etwa 1 bis 3% der Gesamtbreite angehoben werden, die der übrigen Riemen 76 bis 7dbzw. 7g bis Ti entsprechend weniger. Auf diese Weise erhält die von der Gesamtheit der Obertrume gebildete Auflagefläche eine konvexe Form, wie durch die gestrichelte bogenförmige Linie 11 in Fig.2 angedeutet Support roller 8, which raises the associated upper run above the level of the belts 7a, 7j The individual support rollers 8 are arranged with holding arms 9, to which the bearing bushes of the support rollers 8 are attached, together on a horizontal support 10. The distances between support 10 and support roller 8 gradually increase towards the center of the girder and are dimensioned so that the upper strands of the belts 7e and 7 / are raised about 1 to 3% of the total width, those of the other belts 76 to 7dbzw. 7g to Ti correspondingly less. In this way, the bearing surface formed by the entirety of the upper strands is given a convex shape, as indicated by the dashed arcuate line 11 in FIG

Die Wölbung der Auflagefläche läßt sich in einfacher Weise verändern, indem man die Halter 9 aus der gezeichneten senkrechten Stellung in eine geneigte Stellung verschwenkt, wie durch den Pfeil 12 angedeutet Zu diesem Zweck ist der Träger 10 an den Enden mit Achszapfen versehen und drehbar in dem Maschinengestell 1 gelagert Die Schwenkung erfolgt mittels eines Handrades 13 oder auch mit Hilfe einer nicht dargestellten Pneumatik.The curvature of the support surface can be changed in a simple manner by removing the holder 9 from the drawing vertical position pivoted into an inclined position, as indicated by the arrow 12 to for this purpose the carrier 10 is provided with axle journals at the ends provided and rotatably mounted in the machine frame 1 The pivoting is carried out by means of a handwheel 13 or with the aid of a pneumatic system, not shown.

Bei einem anderen Ausführungsbeispiel sind die Haltearme als Gewindestangen 14 ausgebildet, so daß durch Betätigung der Muttern 15 in einfacher Weise jede einzelne Stützrolle 8 unabhängig höhenverstellbar istIn another embodiment, the holding arms are designed as threaded rods 14 so that by actuating the nuts 15, each individual support roller 8 can be independently adjusted in height in a simple manner is

Gemäß Fi g. 1 ist der erfindungsgemäße Riemenförderer 2 unmittelbar einem Wickler 16 vorgeschaltet Dieser weist eine Haspel zur Aufnahme einer Furnierwicklung 18 und eine Andrückrolle 19 auf. Außerdem ist der Wickler mit einem sogenannten Riemenumschlinger ausgestattet Dieser besteht im wesentlichen aus einem Stützriemen 20, dessen Innentrum den Wickel 18 auf einem großen Teil des Umfangs umschlingt und dessen Außentrum über mehrere Stützrollen 21 bis 24 geführt ist Diese sind in einem Rahmen gelagert, der zwecks Anpassung an den wachsenden Wickeldurchmesser mindestens -;inen verschwenkbaren Arm aufweist -toAccording to Fig. 1 is the belt conveyor according to the invention 2 directly upstream of a winder 16. This has a reel for receiving a veneer winding 18 and a pressure roller 19. In addition, the winder has a so-called belt loop equipped This consists essentially of a support belt 20, the inner center of the winding 18 on wraps around a large part of the circumference and its outer center is guided over several support rollers 21 to 24 These are stored in a frame that allows for adaptation to the growing winding diameter at least -; has a pivotable arm -to

Das Furnierband 25 wird der in F i g. 1 dargestellten Vorrichtung von der linken Seite her zugeführt Auf dem Riemenförderer 2 erhält es unmittelbar vor dem Auflaufen auf den Wickel 18 eine leicht gewölbte Form. Infolgedessen berührt die überhöhte Bandmine den Wickel früher als die zugehörigen Randbereiche. Die Luft wird von der Mitte zum Rand hin verdrängt, so daß Lufteinschlüsse ausgeschlossen sind.The veneer tape 25 is the one shown in FIG. 1 shown device fed from the left side the belt conveyor 2, it is given a slightly curved shape immediately before running onto the roll 18. As a result, the raised tape mine touches the roll earlier than the associated edge areas. the Air is displaced from the center to the edge, so that Air inclusions are excluded.

Hierzu 1 Ehtt Zeichnungen soFor this 1 Ehtt drawings like this

6060

6565

Claims

31 Ol 005 1 2 disadvantage that the free accessibility is impaired. DE-PS 7 25 028 is a roll cutting

1. Belt conveyor for feeding ribbon and wrapping machine for material webs, in particular to a winder, with several parallel end 5 more for paper webs, has become known, the one in loose belt, the upper strands of which jointly has a curved bridge over which the support surface for Continuous veneer strips bil- web is fed to a knife roller in a sliding manner. The one, characterized in that the bridge can also be more or less curved in the width direction than it is arranged in the area of the center of the track. As a result, the web can be given an additional belt (Je, Tf) compared to that of the lateral guide that holds it wide.

Belts (7a, Tj) are arranged elevated. Through the US-PS 32 83 980 a conveyor for sheet metal

2. Belt conveyor according to claim 1, characterized belts become known, the three parallel endless indicates that the elevation in the middle has 1 to belts. These form one in the direction of transport 3% of the width of the belt conveyor is the curved support surface. Is transverse to the direction of transport

3. Belt conveyor according to claim 1 or 2, but I5 no curvature recognizable.

characterized by that the superelevation of the The inventor set himself the task of a Riebeiden Edges of the type specified at the beginning increases in a step-like manner towards the center

4. Belt conveyor according to claim 3, gekennzeich- improve that it has a stiffening effect on the net by at least one veneer band running transversely to the transport

Direction-discovering row of elevated positions

ten Stützrciica [S), through which the upper nans the characterizing feature of claim 1 solved

individual belts (7a to 7 $, if necessary mh.

would take the side straps (7a and Tj) are out. that even with extremely thin veneer tapes the through

5. Belt conveyor according to claim 4, characterized in that the elevation is slightly arched belt center of folds indicates that the support rollers (8) with Haltear- 25 and shafts are kept completely free. From the mb men (9) together on a pivotable her, which first comes to rest on the winding, is Carriers (10) are arranged. those contained in any Wefien of the edge areas

6. Belt conveyor according to claim 4 or 5, that air is pushed out laterally, so that a firmer, smoother characterized in that the support rollers (8) produce a roll. When the web breaks, the stiffened zein are height adjustable. 30 mb continued to run smoothly, even if

the edge areas are turned back slightly

the.

Practice has shown that the elevation expediently lies in the range specified in claim 2. The invention relates to a belt conveyor for pulling. Changes within this range lead from veneer tapes to a winder, with hardly any significant influence on the result,
reren parallel endless belt, the upper strands of which by the training according to claim 3 can

Together they form a support surface for continuous veneer arching of the conveying surface of the arching belts to be expected. Adjust the tension of the tape so that s. '' e. Belt with

DE-PS 16 53 108 such a belt 40 is likely to come to rest on the belt,
sponsor became known. The upper part of the belt is preferably used to lift the belt

me of the belt a completely flat conveying surface, the support roller arrangement specified in claim 4,
Such a winder is connected directly upstream of a winder

Belt conveyors have to be adjusted together when winding veneer handles, is in claim 5 Ren over a thickness of about 1 mm has been shown to be well-proven 45.

Due to the shortage and increase in price of the By the feature of claim 6 is the BeHolzes if one endeavors to drive thinner and thinner veneers, the possibility of jestell the elevation is given. Adjust the case optimally when winding such extremely thin fur.

kidney bands encountered unexpected difficulties. In- The drawing serves to explain the invention

As a result of their insufficient rigidity, the bands 50 are more likely to lie in accordance with the embodiment shown schematically or less wavy on the belt conveyor. to play.

|| In this wavy shape they run onto the winding and F i g. Figure 1 shows a side view of a belt conveyor

§5 form bubbles there. The desired smoothing occurs and a downstream winder,

not a, because the air from the bubbles is not fast enough F i g. 2 shows a section along the line H-II of FIG

f | can escape. The bubbles are later shown by 55 F i g. 1,

Ι! the winding weight is crushed. But the Fur- F i g. 3 shows a detail of another embodiment

jg nier cracked. example.

pf Another disadvantage is that in the present day In a machine frame 1 of the belt conveyor 2

It is usual high transport speeds of about the two shafts 3 and 4 supported the shaft 4

| i 200 m / min in the event of belt breaks, the web is

· ■■ ', the stand is thrown back when the inherently stiff bound. On waves 3 and 4, ten sit alike

■? < Is insufficient due to the small thickness. As a result, large pulleys 5 and 6, on which the ten endless

! ■ i a perfect continuous lap formation sen belts 7a and Tj will circulate. The upper dreams of

; ^: .j made impossible. two outer belts 7a and Tj run between the

,;> According to DE-OS 24 57 007 one has already such 65 pulleys 5 and 6 straight ahead and without distraction

] "\ ge Belt conveyors with cover belts or cover strips together stretch a horizontal or approximately

\ provided. This creates a certain smoothing horizontal level. On the upper dreams of the other

! Effect achieved This advantage is achieved by the belts Tb to Ti , each engaging approximately in the middle