CZ298053B6 - System for classifying boards or beams - Google Patents

Abstract

In the present invention, there is disclosed a system for sorting boards or beams used as intermediate products in the manufacture of laminated wood of boards or beams, the system comprising a measuring device (200) for investigating and classifying the boards or beams according to their strength and/or optical criteria, and a sorting conveyor (202) for transporting the boards or beams to a sorting device (204) for sorting the boards or beams according to their classification. The system further comprises a re-sorting station (208) for visual, optionally manual re-classification of boards or beams, which are not or are unclearly classified in the measuring device (200). The system also comprises a first conveying device (206) for transporting the re-classified boards or beams from the sorting conveyor (202) to the re-sorting station (208), and a second conveying device (210) for feeding the re-classified boards or beams back to the sorting conveyor (202).

Description

Technical field

BACKGROUND OF THE INVENTION The present invention relates to an apparatus for sorting boards or beams as an intermediate product for the production of laminated wood from boards or beams, in which the boards or beams have been examined and subsequently classified according to their strength and / or optical criteria by means of a sorting conveyor adequately its classification of feeding into different stages of the sorting deck equipment.

The prior art i? In planing lines with machine classification of wood strength for the production of laminated timber with adjoining storey warehouse as well as baling equipment, semi-finished products, boards or beams that need visual classification and classification are still present in the process.

On the one hand, so-called stray runners, whose data have been lost in the proceedings, arise, and on the other hand, not a significant part of the workpieces is assessed or classified not optimally or at all by the measuring device. Such blanks may be fed to the actual sorting tray, for example the uppermost sorting tray, and, after baling, manually removed from the bundle, visually assessed and manually sorted for further use. This is time-consuming, labor intensive and therefore expensive.

SUMMARY OF THE INVENTION

The present invention has primarily set itself the task of making the process of grading more economical.

This object is essentially accomplished according to the present invention by a sorting station for the visual or manual classification of boards or beams which have not been forged or ambiguously measured in the measuring device, or first classified by the first transport device for feeding the beams or beams intended for classification. / sorting conveyor to the sorting station, as well as a second conveying device for bringing the certified boards or beams back to the sorting conveyor.

In the case of the device according to the invention, the semi-finished products, which have been manually or visually certified, immediately after an unsuccessful attempt to be included in one of the sorting trays, are automatically fed to a sorting station in which the semi-finished products are manually or visually operated by trained personnel. according to strength, load capacity, and / or optical criteria, such as bluishness, bumps and similar defects, are rated and classified accordingly. The classified blanks are then fed back into the sorting container and fed to sorting trays corresponding to the respective classifications.

In a preferred further embodiment of the invention, the sc is assumed to be. seen in the transport direction 45 of the classifiable planks or beams, a first sub-magazine for the classifiable planks or beams is arranged in front of the sorting station, and, seen in the transport direction of the classifiable planks or beams, a second sub-magazine for the classified planks or beams is arranged downstream in this way, the operating speed in the post-sorting station is essentially independent of the operating speed of the other sorting operation. Suitably, on account of the high rotational speed of the sorting conveyor, the second auxiliary container may be smaller than the first auxiliary container.

According to a further advantageous feature of the invention, it is also envisaged that the first conveying device adjoins the end of the sorting conveyor associated with the last-operated sorting tray.

In a further preferred embodiment of the invention, it is further provided that the installation of the sorting conveyor by means of boards or beams from the measuring device is controllable in such a way that there are gaps at regular or irregular or even controllable intervals there for second transport equipment.

Overview of figures in the drawing

BRIEF DESCRIPTION OF THE DRAWINGS The invention is described in more detail with reference to the accompanying drawing, in which FIG. 1 schematically illustrates a device according to the invention with a sufficient sorting station.

DETAILED DESCRIPTION OF THE INVENTION

Semi-finished products, planks or beams not shown in the drawing are mechanically analyzed in the measuring device 200 for their strength and optical criteria, classified into different classes and marked differently according to their classification, and then transported to a sorting deck 204 by a sorting conveyor 202. According to their classification, the individual semi-finished products are deposited in assigned sorting trays, around which the sorting conveyor 202. Moves to the end of the sorting conveyor 202, the first transport device 206, which leads to the sorting station 208. Semi-finished products not classified or misclassified by the measuring device 200. and cannot be incorporated into any of the sorting trays, they are fed to the sorting station 208 by means of the first transport device 206.

In the post-sorting station 208, the workpieces are manually or visually evaluated by the skilled workforce in terms of their strength, load-bearing capacity and / or optical criteria, and classified accordingly. Also, the cutting information found here by the labor force is marked on the workpiece by means of marking chalk or paint. The classification, i.e. the strength and / or the optical classification, is communicated to the system control system (not shown here) by means of the respective input data to a data input device (not shown).

The manually classified blanks are then fed manually to a second conveyor device 210, which in turn supplies the blanks to the sorting conveyor 202. The sorting conveyor 202 leads the blanks again to the sorting trays of the sorting tray 204, where they are discarded according to their classification.

In order to ensure a continuous supply of the workpiece from the second conveying device 210 to the sorting conveyor 202, the system control controls the feeding of the workpieces from the measuring device 200 to the sorting conveyor 202 in such a way that an unlabelled location at which a blank coming from the sorting station 208 can then be placed.

In order to be able to operate the sorting station 208 independently of the speed of the remaining sorting device, an appropriate auxiliary container 212 is always provided therein before or after. Due to the high clock speed of the sorting conveyor 202, the second sub-magazine 214 downstream of the sorting station 208 may be substantially smaller than the first sub-magazine 212 upstream of the sorting station 208.

Claims (6)

1. An apparatus for sorting boards or beams, as an intermediate product for the production of laminated wood from boards or beams, in which the boards or beams have been subjected to a measuring device (200) in which they have been examined for strength and / or optical criteria and subsequently classified by means of a sorting conveyor (202) according to their classification to different sorting levels of the sorting deck (204), characterized in that it further comprises a sorting station (208) for visual or manual classification of boards or beams which has not been classified or ambiguously classified in the metering device (200), and further comprises a first transport device (206) for supplying certifiable planks or beams from the sorting conveyor (202) to the sorting station (208) and a second transport device (210) for bringing the classified boards no or beams back to the sorting conveyor. Apparatus according to claim 1, characterized in that a first auxiliary container (212) for the classifiable boards or beams is arranged in front of the sorting station (208) relative to the transport direction of the classifiable boards or beams. 20 May Device according to claim 1 or 2, characterized in that a second auxiliary container (214) is arranged downstream of the post-sorting station (208) relative to the transport mixture of the classifiable boards or beams. planks or beams fed back to the sorting conveyor (202). 25 Device according to claims 2 and 3, characterized by. wherein the second sub-magazine (214) is smaller than the first sub-magazine (212). Device according to one of the preceding claims, characterized in that the first conveyor device (206) is connected to the end of the sorting conveyor (202) associated with the last sorting network. Apparatus according to any one of the preceding claims, characterized in that the filling of the sorting conveyor (202) with the board or beam / measuring device (200) is controllable so that gaps are available to accommodate the classified boards or beams / second conveyor. September- 35 women (210).