FI85825B - Arrangement for selectable transfer of a sheet-like object from a first conveyor belt to a second conveyor belt - Google Patents

Description

85825

Apparatus for selectively separating sheet-like objects from a first passageway to a second passageway

The invention relates to an apparatus for separating sheet-like, flexible objects 5, optionally from a passageway carrying them, to a passageway different from that. In particular, the invention relates to the separation of veneer sheets from a conveyor carrying them to different passageways, for example due to differences in quality or the like.

10 With such a path, the sheets are usually transported immediately in succession, which makes better use of the capacity of the conveyor. If it is necessary to separate sheets from such a series of sheets for an optional, deviated path, it has been necessary in the prior art to provide a certain minimum distance between the sheets. To achieve this distance, it has been necessary to accelerate the advancement of the sheets at some point in the transport path. However, this expedited transportation has caused problems. The sheets may turn on the conveyor, and even break when skewed. Further, information about the exact location of the sheets is lost, which information is essential for controlling the flow of the sheets.

25

Partly the same problems are also related to the apparatus known from Finnish patent application 813944, in which sheet-like objects taken by a conveyor can be distinguished differently. . walkways. The path selection is determined by a blow jet which is guided in a guided straight path to the area of the leading edge of the otherwise advancing object. In this apparatus, too, the sheet-like objects do not move in a controlled manner, because the apparatus lacks the holding force controlling the sheets, above all in the deflection area.

According to the invention, there is provided an apparatus in which the above-mentioned problems do not occur. The relative distances of the immediately successive sheets need not be changed, and the sheets may be transported in such a way that they are at least partially in close contact with the actual conveyor or the deflected conveyor throughout the transport.

5

These functions can be achieved by equipment, the characteristics of which are given in the appended claim 1.

The invention will be explained with the aid of the accompanying schematic drawing, in which

Figure 1 is a schematic side view of an apparatus for carrying out the invention, and 15

Figure 2 shows an enlarged detail of the apparatus of Figure 1

In the figures, the veneer sheets are denoted by reference numerals 1,2, 20 and the conveyor importing them by reference numeral 3. The conveyor sheets 3 have the veneer sheets substantially in succession. The conveyor 3 can be, for example, a belt conveyor in which a suction effect (see Fig. 2) is arranged between the conveyor belts in the area C. In this area of the suction effect, the direction of travel of the conveyor 3 is deflected downwards.

A second conveyor 4 is arranged to extend over a distance on the conveyor 3, the conveying direction of which is substantially the same as the conveying direction 30 at the beginning of the conveyor 3. The conveyor 4 is a suction belt conveyor similar to the conveyor 3. A blow nozzle 5 is arranged in the curved suction zone of the conveyor 3. The position of the nozzle 5 is chosen so that the rear edge of the sheet 1 detached from the conveyor 3 in the blow area does not extend. Instead, the blowing from the nozzle 5 raises the leading edge of the deflectable sheet 2 under the suction effect of the conveyor 4.

li 3 85825

Contrary to what is shown in the drawing, the removal of the deflectable sheets from the suction effect of the conveyor 3 can be effected from the plane of the conveyor 3 at the blow-5 nozzle by means of an optionally ejectable mechanical member.

Claims (3)

4,85825 An apparatus for optionally deflecting sheet-like, relatively flexible objects (1) from a first passageway to a second passageway, the apparatus comprising a first conveyor (3), e.g. a conveyor belt with a curved direction of travel and a second conveyor (4) located in the vicinity of the first conveyor deflection area; the direction of travel substantially corresponds to the direction of travel of the first conveyor (3) before the deflection, and an optionally activating separating member (5) acting through the first conveyor (3) and located in the deflection area of the first conveyor (3), characterized in that the first the conveyor (3) has a suction zone (C) provided in its deflection area, which affects the deflection direction of the conveyor, and that the second conveyor (4) is a suction conveyor. 1. An opening for use in the form of a transport, in the form of a transport (1) from the transport to the transport and the transport, the transport to the transport (3), t.ex. in the case of rail transport, the transport of which is not a means of transport, but also in the case of transport by means of a transport vehicle (4); conveyor (3) network, white-collar vehicle (5), single-row transporter (3), transverse conveyor (3), open conveyor (3), harness to other transporter (3) ), which may be used for transport, and for transport (4) and transport. li