DE202008002779U1 - Apparatus for coating panels with veneers - Google Patents

Abstract

A device for coating plates (3) with veneers (9), wherein the glued plates (3) and veneers (9) are first aligned and then placed precisely on each other, characterized by
- An alignment device (10) for veneers (9), which is equipped with at least one alignment plate (17) which is caused by a vibration generator (20) vibrated.

Description

The The present invention relates to an apparatus and a method for coating panels with veneers.

veneered Plates are preferably used in the manufacture of furniture and furniture parts used. They predominantly exist made of wood materials. For their production, it is necessary that Plates after a cleaning process on one or both sides with glue to be provided and subsequently veneer with veneer. After that will be gluing veneer coated panels in a veneer press. Veneers here are both wood veneers and decorative films or return papers understood.

The covering of the wood-based panels with veneers can be done manually or automatically by a documenting device. In order for such a device to be used economically, it is necessary to place the plates and veneers very close together so that the veneer supernatant can be kept as low as possible. One way to accurately place the plates is in DE 20 2004 001 308.8 described. In order to achieve an exact laying of the veneers, the veneers must either be manually aligned already in the veneer stack or an alignment device is used. Alignment devices are known in which the veneers are gripped by movable vacuum cups and aligned by a longitudinal and transverse movement of the vacuum cups. In veneer coaters laying four or more veneers simultaneously, this method requires a large number of drives to align the veneers. Alignment devices with this procedure are therefore relatively complicated and expensive.

Out EP 1 749 627 A1 Alignment devices are known in which the alignment process is carried out by grid-like arranged over the table surface attacks in conjunction with a relative movement of the table surface against the attacks.

From that The present invention is based on the object, a simple, economical and reliable device for Aligning veneers to create.

According to the invention Problem solved by the combination of features of claim 1, the under claims FIGS. 2 to 8 show further advantageous embodiments of the invention.

The Inventive alignment device for veneers is characterized by a number of advantages. Especially advantageous is the low mechanical complexity, which low cost and a high level of operational safety results.

One Another advantage is that the delicate veneers do not need to be fixed and also not damaged can be.

It is advantageous to make the alignment device such that The veneers are aligned on the front side of a continuous stop edge become and switchable stops be used for aligning the lateral veneer edges. This can the alignment device by lifting and lowering individual side stops very quickly adapted to different veneer dimensions.

Further Advantages of the device according to the invention emerge from the attached Drawing and the embodiments described below. Likewise, the The above-mentioned and the still further features according to the invention in each case be used individually or in any combination with each other. The mentioned embodiments are not as final enumeration but rather have an exemplary character. It demonstrate:

1 a schematic view of an apparatus for coating panels with veneers.

2 a schematic view of the alignment device according to the invention for veneers.

3 a schematic side view of an alignment plate ( 17 ) with vibration generator ( 20 ) and transport lining ( 21 ), as well as a switchable side stop ( 19 ).

1 shows a schematic view of an apparatus for coating panels with veneers. Such devices are mainly used in the furniture industry.

The plates to be coated ( 3 ) are provided by double-sided loading devices ( 2 ) on a conveyor roller conveyor ( 1 ) filed. The plates are removed by a brushing machine ( 4 ) and a glue application machine ( 5 ), where they are cleaned and glued on one or both sides. The plates ( 3 ) are now using knife disk tracks ( 6 . 6 * ) transported against a stop. There the plates ( 3 ) now laterally of a plate loader ( 7 ) and to the depositing place on the laying band ( 8th ). During this process, the plates ( 3 ) transverse to the direction of travel of the disc tray ( 7 ), as in DE 20 2004 001 308.8 described.

The veneers ( 9 . 9 * ) are stacked on a conveyor roller conveyor ( 12 . 12 * ). It is not necessary that the veneer edges are aligned one above the other. Through a suction pad equipped with vacuum cups ( 13 . 13 * ), the veneers ( 9 . 9 * ) are removed from the stack and placed on an alignment device ( 10 . 10 * ) filed.

The veneers are placed on the alignment device ( 10 ) by means of directed vibrations against fixed, switchable stops ( 14 ). To wavy or curved veneers ( 9 ) to align, are downwardly directed air nozzles, which press the veneer edges down. The frequency and amplitude of the oscillation can be adjusted by a controller to the required transport speed. Already oriented veneers ( 9 ) are now again with a suction crossbar ( 13 . 13 * ) and placed on the appropriate depositing place on the 8th ). After placing the veneers for the underside ( 9 ) and the top ( 9 * ) as well as the plates ( 3 ), the mounting band ( 8th ) continue to clock. The coated plates ( 3 ) are transmitted via a cross converter ( 14 ) and conveyor belts ( 15 . 15 * ) of the veneer press ( 16 ) fed and pressed there.

2 shows a schematic view of the alignment device according to the invention for veneers ( 10 ). The alignment device for veneers ( 10 ) contains one or more alignment plates ( 17 ) on which the veneers ( 9 ) against the end stop ( 18 ) and the switchable side stops ( 19 ) be transported. The arrows show the orientation of the vibration, ie the direction of transport of the veneers ( 9 ). The switchable side stops ( 19 ) are switched back or forth depending on veneer dimensions.

3 shows a schematic side view of an alignment plate ( 17 ) with vibration generator ( 20 ). The direction of the vibration and the direction of transport of the veneer ( 9 ) are represented by arrows. The alignment plate ( 17 ) moves obliquely upwards and in the transport direction. Due to the movement component of the alignment plate ( 17 ) increases the friction between alignment plate ( 17 ) and veneer ( 9 ). Therefore, the veneer moves ( 9 ) horizontally in the same direction as the alignment plate ( 17 ). When swinging back, the alignment plate moves ( 17 ) down and opposite to the transport direction. Due to the movement component of the alignment plate ( 17 ) downwards reduces the friction between alignment plate ( 17 ) and veneer ( 9 ), therefore, the veneer ( 9 ) not horizontal. The process of rocking back and forth is repeated with an adjustable frequency and amplitude. This results in a precisely metered transport movement of the veneer ( 9 ). The vibration frequency and amplitude are adjusted so that the veneer ( 9 ) with sufficient speed against the stops ( 18 . 19 ) is transported. To support the transport movement, a transport lining ( 21 ) on the alignment plate ( 17 ) are applied. Due to the inclined fibers of the transport lining ( 21 ) the transport performance is increased.

1

Roller conveyor

2

charging device

3

plate

4

Brushing

5

Gluing

6

Diameter disc track

7

plate trailer

8th

feed apron

9

veneer

10

alignment

12

Roller conveyor

13

suction crossbar

14

cross converter

15

conveyor belt

16

veneer Press

17

alignment

18

end host

19

lateral attack

20

vibrator

21

transport cloth

Claims (8)

A device for coating plates ( 3 ) with veneers ( 9 ), with the glued plates ( 3 ) and veneers ( 9 ) are aligned first and then placed accurately on each other, characterized by - an alignment device ( 10 ) for veneers ( 9 ) with at least one alignment plate ( 17 ) equipped by a vibrator ( 20 ) is vibrated. Apparatus according to claim 1, characterized in that the vibration generator ( 20 ) below the alignment plate ( 17 ) is located. Apparatus according to claim 1, characterized in that the vibration generator ( 20 ) obliquely, preferably at a 45 ° angle, to the stop edges ( 18 . 19 ) is arranged. Device according to claim 1, characterized in that the alignment plate ( 17 ) on the top with a transport lining ( 21 ) is provided. Device according to claim 1, characterized in that the side stops ( 19 ) automatically before (up) and back (down) can drive. Apparatus according to claim 5, characterized in that the upper sides of the switchable side stops ( 19 ) at rest flush with the top of the alignment plate ( 17 ) to lock. Device according to claim 1, characterized in that in the region of the stops ( 18 . 19 ) are downwardly directed air nozzles. Apparatus according to claim 1, characterized in that the vibration generator ( 20 ) is equipped with an adjustable regulator.