DE1115911B - Device for dividing and / or cross-seaming from pourable material, such as wood chips mixed with binding agents or the like, loosely piled blanks for chipboard production - Google Patents

Description

GERMAN

PATENT OFFICE

J18204 Ic / 381

ai BI.

REGISTRATION DATE: MAY 27, 1960

NOTICE
THE REGISTRATION
AND ISSUE OF
EDITORIAL: OCTOBER 26, 1961

During the production of chipboard, loose material is mixed with binders Wood chips or the like, usually initially loosely poured blanks prepared by adding the chip material either in the form of a continuous chip fleece directly onto a continuously rotating one Conveyor belt or in the form of individual chip mats is heaped on support sheets.

The chip fleece must, before the finishing press, for example a one-day or multi-day heating press, is fed, divided into precisely matched individual pieces and at the same time trimmed with sharp edges so that that the individual pieces have smooth transverse edges at the separation points. When poured onto shaped sheets It is also essential that the individual mats are in the transverse edges of the finished press, because otherwise the finished chipboard will be in the edge zones would have a less solid structure than in the plate center section.

Is known a dividing device with knife or saw blade-like cutting tools that are attached to a Frame sit, which is arranged to be movable along the conveyor belt carrying the heaped nonwoven is and is operatively connected to the conveyor in such a way that the frame during the continuous Promotion of the chip fleece is brought up against its surface and the cutting tools Carry out the cutting work under the action of pressure of the frame against the nonwoven, d. H. each one or make two parallel cuts at the same time. Then the frame is lifted off again and moved back to the starting position with the cutting tool (s).

Furthermore, an apparatus for the continuous production of chipboard is also used of shims on which the bulk material is loosely piled in individual chip mats, known, for the trimming of the transverse edges of the chip mats lying on the shaped sheets during of the conveying process one at the same speed and in the same direction as the conveyor belt wandering double trimming saw is provided, which returns to the starting position after the trimming process has ended going back.

These known cutting and trimming devices movable in the longitudinal direction of the conveyor result in a complicated, costly design of the system and require a special drive for the Moving back and forth along the conveyor. They can easily lead to operational disruptions and are therefore necessary particularly careful maintenance.

Device for splitting
and / or transverse trimming of pourable

Good, like mixed with binders
Wood chips or the like, loosely piled up
Blanks for chipboard production

Applicant:
Industrie Maschinen G. mb H., Hamburg

Systems for the machine production of chipboard, in particular those systems in which the Finished pressing takes place in a single or multi-daylight heating press, generally work with a pre-press, which compacts the loosely heaped up chip material and levels it on the surface.

For chipboard production plants equipped with prepresses, the invention brings a considerable amount Simplification in the design and arrangement of the dividing and / or trimming device, preferably consisting of transverse circular saws, characterized in that one or two cutting tools on the entry transverse side or the two transverse sides of the frame of the prepress are arranged and one depending on the stroke of the press ram automatically operated control device is provided, which the cutting tools after the press ram has been placed in operation and after the press stroke has ended can turn off again.

Here, the fact that the further conveyance of the loosely poured blanks during the Treatment in the prepress has to be interrupted anyway, exploited in a favorable manner to during the downtime at the pre-press, the one for dividing a chip fleece into individual pieces precisely trimmed transverse edges or for trimming the transverse edges of heaped up on shaped sheets To accomplish chip mats with cutting tools, which only in the vertical direction an infeed and lifting movement and perform a feed movement transversely to the conveyor during the cutting process need, but also not be moved back and forth in the longitudinal direction of the conveyor

109 710/430

.3

have to. On the one hand, this results in a considerable simplification for the drive of the cutting tools and greater operational reliability of the driven machine parts and, on the other hand, of the Advantage of a completely sharp-edged transverse trimming of the blanks while strictly adhering to the for the finished chipboard of the desired length. In this way, the trimmed will be the finished Material losses caused by chipboard are reduced to a minimum with the help of a format saw; if necessary, transverse trimming of the finished chipboard can even be dispensed with entirely. In the end With the arrangement of the cutting tools on the prepress according to the invention, it is also a special one Pressing device saves, which is necessary for the loosely piled up chip material to hold tightly together for performing the separating or trimming cuts.

Appropriately, the arranged on the transverse sides of the frame of the prepress can be made of transverse circular saws existing cutting tools for feeding to and removing from loosely poured chip blank be attached to a frame that can be adjusted in height on the frame of the prepress is led.

The drive guide of the circular saws can either be designed so that the circular saws when lowered Press ram only perform cutting work in one direction of movement and then again lifted press ram can be returned to the starting position without cutting work afford, or so that the transverse circular saws in both directions of movement, d. H. both in advance and perform cutting work also in return.

In the drawing, the invention is in one embodiment shown.

Fig. 1 shows the side view of the prepress with the arranged on the two transverse sides of the press frame Circular saws;

FIG. 2 is a view of the left side of the prepress in FIG.

On the conveyor 1 consisting, for example, of an endless belt, either the Heaped up chip fleece 2 or, as shown, the individually heaped up on shims la Chip mats fed to the prepress. This is implemented and consists of a known design from the press table 3, over which the conveyor belt 1 with the chip blank 2 runs, and the punch 4, which by one or more hydraulic working cylinders 5 against the on the press table 3 Located section of the chip fleece 2 or the chip mat lowered and after completion of the Pressing process is returned to the raised starting position.

The frame of the prepress is, as usual, made up of sturdy columns 6, one of which is shown in the drawing Example four are arranged on each long side of the prepress. On the two transverse sides of the frame a frame 7 is guided vertically. The frames? are interconnected and are moved up and down together by a drive device (not shown) on the press frame emotional. Each frame 7 is provided with two spaced horizontal slide rods 8, which serve as guides for a support body 10 equipped with sliding bushings 9. At the tapered lower end of each support body 10, an electric motor 11 is flanged on whose stub shaft facing the press frame a circular saw 12 is attached. The parallel Transverse circular saws 12 lying opposite one another are with the exception of a free lower edge section a housing 13, to which a suction channel 14 is connected, through which when working sawdust generated by the circular saws is extracted. The mode of operation of the previously described separating or trimming device is the following:

As soon as the press ram 4 has reached the extreme stroke position, the frames 7 are on the two transverse sides of the frame of the prepress 3 to 6 shifted downwards, so far that the two transverse circular saws 12 occupy the same height as the surface with their lower apex of the belt conveyor 1 or the surface of the support plate carried by the conveyor. Then the electric motors 11 and the feed drives 15 of the circular saws are switched on automatically. The rotating transverse circular saws 12 are now transversely to the stationary during the press stroke Conveyor 1 moves, with the transverse circular saw located at the rear in the conveying direction of the conveyor 1 12 the lying on the press table 3, firmly pressed together by the press ram 4 Section of the chip blank separates from the chip fleece and the other transverse circular saw 12 to the separation next section trimmed so that the desired for further processing in the finishing press The length dimension of the divided swarf blank is precisely adhered to.

After completion of the separating and trimming cuts, the frames 7 are on the transverse sides of the frame the prepress 3 to 6 moves back up into the inoperative position and the transverse circular saws bearing support body 10 returned to the slide rods 8 in the starting position.

The support body 10 with the transverse circular saws 12 can, however, also be in the advance position reached stop and on the next press stroke with the frame 7 pushed down into the working position so that the transverse circular saws 12 perform cutting work even when reversing.

The switching on and off of the drive motor 11 for lowering the frame 7, for the advance and Return drives the support body 10 and for the saw motors 12 can be electrically controlled with known Means to be realized.

If a continuous chip fleece is fed onto the conveyor without sheet metal supports, it is of course sufficient a cross-cut saw on the entry side of the prepress, which works in the same way as described.

Claims (5)

PATENT CLAIMS: 1. Device for dividing and / or transverse trimming by means of cutting tools, preferably transverse circular saws, of loose material, such as wood chips mixed with binders or the like, in the form of a continuous chip fleece or in the form of individual chip mats loosely poured onto base sheets for the manufacture of chipboard , which are treated in a prepress, characterized in that one or two cutting tools (12) on the entry transverse side or the two transverse sides of the Frames of the prepress (3 to 6) are arranged and one depending on the stroke of the press ram (4) Automatically operated control device is provided which controls the cutting tools after placing the press ram on the chip blank (2) and after Can turn off termination of the press stroke. 2. Apparatus according to claim 1, characterized in that the on the transverse sides of the frame the pre-press (3 to 6) arranged, consisting of transverse circular saws (12) cutting tools are attached to the frame (7) for the delivery to and for the removal of the chip blank (2) on the transverse sides of the frame of the pre-press so that it can be adjusted in height are. 3. Device according to claims 1 and 2, characterized in that the frame (7) on the two transverse sides of the frame of the prepress (3 to 6) connected to form a rigid whole and a common drive is assigned to them. 4. Apparatus according to claim 1 and optionally claim 2, characterized by a such drive guidance of the transverse circular saws (12) on the transverse sides of the frame of the prepress (3 to 6) that the transverse circular saws only in one direction of movement when the press ram (4) is lowered Carry out cutting work and return to the starting position with the press ram raised can be returned without performing cutting work. 5. Apparatus according to claim 1 and optionally claim 2, characterized by a such drive guidance of the transverse circular saws (12) on the transverse sides of the frame of the prepress (3 to 6) that the transverse circular saws in both directions of movement, i.e. H. both in advance and in the return, with the press ram (4) lowered, can perform cutting work. 1 sheet of drawings © 109 710/430 10.