DE1528120A1 - Method and device for producing a middle layer for a blockboard - Google Patents

Description

DlPL-ING. H. FINK PATENTANWALT ■ ESSLINGEN / NECKAR · HINDENBURGSTRASSE 44

• Patent attorney FINK-E8llng "n a, N .. HlndenbureitraBe" · '

Nov. 30, 1966 Th P 5525

Mr Robert Hildebrand, Oberboihingen (Württ,), Nurtinger Str. 68

"Method and device for producing a middle layer for a blockboard" __ - '

The invention relates to a method for producing a middle layer intended for a Dischler plate from strips of mouth the like., each cut from a board together and from several of which are glued together to form the middle layer and a device for carrying out the process.

There is known a middle ply gluing machine in which the strips are introduced from both sides via application rollers that glue them to the side. There is a risk of that the strips introduced on both sides do not always come to rest on their front sides, so that gaps arise. Even the bars of the Width of the middle layer can be cut off accordingly, whereby. inevitable waste is created even when longer pieces are reused.

In a known continuous process for producing a middle position, the strips are dried cut- out boards and the folded-over and to each other pending strips on their ι upper and lower surfaces of veneer sheets for Befeetigen

009840/0157

- 2 - Nov. 30, 1966th

P 5525

coated with glue. The coated sides of the strips are then covered with veneer panels, which are then in a press on the strips are pressed, so that a firm connection between the strips and the veneer panels is formed. In this case, the contiguous Sides of the strips but the strips only with the veneer plates glued. Since the boards are dried into strips before cutting, the large sides of the strips are more humid than the small-area sides, which is a disadvantage for gluing with the veneer panels.

The invention has a continuous method of manufacture a middle layer to the task, in which the strips on the sides be glued and on their outside as evenly as possible Have moisture content. This object is achieved according to the invention in that the strips before Dry the board cut to size, turned over and put in a dryer be dried that the dried strips by several Adjacent devices for applying glue their narrow sides are passed through, of which glue is applied to the narrow sides of the strips and that with glue provided sides of the strips are placed against one another and the strips are pressed together laterally. Because of the drying of the strips and not the boards for making the strips, the surfaces of the strips have approximately the same moisture content and therefore tend less to warp than unevenly dry groins. You can also use the drying of moldings shorter drying times can be achieved than when drying the boards to be cut into strips. The strips are combined to form a central layer in the conveying direction, which reduces the risk the creation of gaps between the strips is practical is corrected, so that a closed central position is created. The lines are safely used to form a plate brought together and connected to one another on their narrow sides *

0098AO / 01BT

- 3 - 3.0. Nov. 1966Th

P 5525

For the formation of middle layer panels "of any size" the made of strips glued together according to theirs Exit from the press in. Equal lengths and cut through this The cut plates produced are interconnected on their narrow long sides to form central layers of the usual size Glued connected.

A device according to the invention for carrying out the method is characterized in that a bar saw is a device for folding down the strips is connected downstream, which is followed by a dryer and that the strips are provided with a layer of glue on their narrow sides in a glueing device and then to Forming a middle layer in a 'pressing device are to be pressed against one another laterally.

Further advantageous features emerge from the following Description and claims in connection with the drawing. In this a device for carrying out the method is shown schematically and greatly abbreviated in the longitudinal direction. It demonstrate .

Pig. 1 is a side view
Fig. 2 is a plan view.

The device has a bar saw 1, which is used for cutting of strips of boards 3 is used, which on a front of the Strip saw T standing carriages are stacked. The framing saw 1 is followed by a device 7 for folding down the strips, which is wider than the framing saw and which is at least in one distance corresponding to the board length a narrow dryer 9 · ■ follows, on the conveyor 11 of which the folded strips are passed through the dryer. The device 7 can be a Have kind of guide comb, the teeth of which can be moved laterally Bind and serve for mutual removal of the strips, which

■ ■■■■ '. ■ *' ■■ '. ■■: - '■' "'. - 4 -

0 0 9 8 4 0/0157

- "4- - ■ '30- Βον * I9fi63äi · 'P 5525.

then by means of an overlying and aufzufpiden on the ledges, in the manner of a belt drive, transverse drive is turned over as soon as it has a "position corresponding to its width" have taken. .

The device 7 can also be designed in the manner of a curve guide, in which each individual line coming from the line Ledge until it is folded down.

A grinding device 13 is connected downstream of the dryer, with which one or two sides of the strips can be ground. A conveyor and spreading device 15 following the grinding device 13 is used to for the strips during the service life. The conveying and spreading device can have jLeiifcschienea and / or tapered rollers, the apex lines of which are horizontal. The gluing device 17 has glue application rollers spaced apart from one another by the width of a strip. The area for guiding the strips in the direction of the killing through the gluing device 17 should extend somewhat over twice the length of the strip. The number of applicator rollers is one greater than the 2 © hl of the strips to be joined together at the side. The gluing device 17 are nachgeseheltet FÜhrungawalzen 1 "9 serving for joining the the diameter of the Bfileimwalzen apart and provided on their narrow sides with glue strips" The 'abutting on their narrow sides strips are then passed through a press * device 21 hindurehgefuhrt _5, the can have a lateral pressure exerting pressure on the linen, so that the strips are connected to one another to form a plate. A cutting saw 23, which can be moved according to the feed of the connected strips, is connected to the pressing rollers, with which the cut plates are cut off, the length of which is the desired width corresponds to the middle layer and which are put together on their long sides to form a correspondingly dimensioned middle layer 27 "

* to a glue device 17 and to lead apart -. ς the Afford

0Ό9 840/0 157

5 -. ■ Nov. 30

'■'. P "5525

The boards 3 removed from the carriage 5 are sawn up in the bar saw 1 and folded over in the device 7 so that they all come to lie next to one another on one of their large-area sides. During the conveyance through the dryer 9, the strips are dried approximately evenly on their outer circumference and then sanded in the grinding device 13 on at least one side. '

In the conveying 'and spreading device 15 can from the strips those with "errors" eliminated by hand or it can be faulty Pieces to be cut out of the strips. The device 15 is used to supply the seeding device 1? and is that Number of glue rollers and their diameter increased accordingly. The guide roller η 19 then lead between them. ·, led through and provided with glue on their narrow sides strips back together so that they are at the beginning of the press rollers 21 rest against one another and are pressed against one another by these. After the strips are glued together using the cut-off saw 23 are cut to cut plates of the same length, the cut plates, 25 glued together on their narrow long sides and "form" a middle layer 27 of the desired width.

009840/015?

Claims (10)

- Nov. 6th - 30th P 5525 A η- s- ρ rü-o h e Method of making one for a blockboard certain middle layer of strips and the like. Which from each one board cut together and several of them . 'are glued together to form the middle layer, thereby * / g e k en η ζ calibrates that the strips before the Drying the board · cut, folded and in a drier (9) dried such that the dried Leister be passed through a plurality of adjacent devices (17), hmalseiten _c of dent'ajLeim to the S of • strips is applied, and that the with Sides of the strips provided with glue are placed against one another and the strips are pressed together laterally. 2. The method according to claim 1, characterized in that g e k e nn ζ ei cn net, that the strips after drying at least edited on one side. ' ) 3 «Method according to claim 1 or 2, characterized in that at least bad parts are sorted out from the dried strips. 4. The method according to any one of the preceding claims, characterized ;. · G e k e nn ζ e i c h η e t that the glued together The board made of strips is cut into equal lengths after exiting the press (21) and ; that thereby produced cutting plates (25) for the formation of middle layers of the usual size are connected to one another on their narrow long sides by glue. 00 9840/0157 ~ 7 - 30. Νον, Ι966ΪΙ1 * 5525 5 * Device for performing the Method E, according to one of vorhergehendeη claims, characterized .geke ζ η η ~ e t rest, that a miter | 1) a device C 7) for folding the body naehge sehalt et th, the dryer ( 9} 'follows, and that the dried strips are to be provided with a line of glue on their narrow sides in a sewn gluing device (17) and then to be pressed against each other to form a middle layer in a 3? Resa device (21) . 6. Performing according to claim 5 * thereby g e k e η η ζ el e h-. net that the gluing device C171 from side by side arranged glue rollers formed with vertical axes is to put a! bar between! two! wheat is, and -äass the gluing device a demand Spreading device (15) and a joining device 119) is followed. 7 «Väorriclitung according to claim 5 or 6, marked thereby, let as a device {!) For folding the bars a guide comb with laterally adjustable teeth serves a belt drive located above the bars and assigned to them. ß e η η ζ eic lh et η that the device if) for folding of the strips is auegebildet as Xurvenflihrungsbahn for ^ ny single Leisie »performing according to claim 5 or 6 characterized ge * Is.. 9 · A device according to one of claims 5 to 8, characterized GEK β η η ζ e I et η, that the conveying and spreading device has {155 tapered rollers whose S _o HeiTel are arranged in one plane. '- ■ ■ ".". ■.' ■■■ "- 8 - ' 009840/0157 - θ - Nov. 30, 1966th P 5525 10. Device according to one of claims 5 to 8, characterized characterized in that the conveying and spreading device (15) provided with Leitschieneη for the strips is. 0098AO / 0 1 5 7