SU138733A1 - Apparatus for leveling dry veneer tape from a dryer, cutting it into sheets, sorting and laying sheets onto platforms - Google Patents

Description

Devices are known for leveling the veneer tape out of the dryer, cutting it into sheets, sorting and placing the sheets on the platforms using conveyors and rollers for removing the veneer during processing and automatic scissors with a photo element system.

However, the known devices do not provide for the mechanization of sorting a sheet of veneer and laying them on platforms.

The device, made according to the invention, is deprived of this disadvantage. The essence of the invention lies in the fact that for the sorting of veneer sheets an aggregate mounted behind the scissors and consisting of endless branches of rubber belts, under which the section sections with platforms are located, is used. The varietal sections are provided in the upper part with folding shelves and a photocell interlocked with the order drum, which is used by the operator when visually sorting the sheets of eggson to move them with belts to the corresponding sections.

The proposed device differs from the known ones also in that for braking the veneer tape at the moment of cutting the sheet with scissors, a lifting frame fixed in front of the scissors with stops is used.

FIG. 1 shows a diagram of the proposed device; in fig. 2 - the same, in a section at the working position of folding shelves; in fig. 3 - the same, in section, when dropping a sheet of veneer into one of the sorted sections.

The device described above consists of a conveyor 7, which serves to feed the veneer tape from a drying device, a conveyor 2, a leveling device, which also includes a centering no. The photocell system 6 gives the command to cut the front and rear edges of the veneer tape.

The device also includes feed rollers 7, a bypass conveyor 8, a lifting frame 9, a photocell 10, giving a command to cut a format sheet and lifting the feed rollers 7.

The sorting unit consists of two endless branches of rubber out of the belt //, located in the upper part of the device. At the bottom of the device are varietal sections. Each section has folding shelves 12 which, in the working position, are pressed against the lower branch of the rubber belts and a lifting platform 13 with a rack for laying sorted veneer.

The sheet of veneer, coming from the bypass conveyor 8, falls into the gap formed by rubber belts // and folding shelves J2. Due to the difference in friction coefficients, the rubber-veneer and the veneer-metal sheet are transported along the sorting line. For more favorable transport conditions, folding shelves have light rollers. Each grade section has a photocell interlocked with the drum ordering system, which is controlled by the operator.

The order drum system provides sheet reset as a function of time, and a photocell system on varietal sheets depending on the position of the sheet. Rotation of the drop shelves occurs only when both systems are activated.

Thus, the sheet is discharged according to grade.

At the moment 1: sheet advance, the above systems move the valve of the pneumatic cylinder 14, which, through a system of levers, draws the folding flanges 12 to the sides and somewhat lower, freeing the sheet for free fall.

Due to the fact that the sheet has a certain windage, and the speed of rotation of the shelves 12 is strictly defined, it is provided to forcibly drop the sheet with a special device 15.

The lifting platforms of the 13 varietal sections are lowered as the sheets are accumulated by means of a ratchet mechanism associated with the rotation of the shelves.

Thus, the amount of falling of the sheet is considered constant. The proposed device can be used in the design of new enterprises or the fundamental reconstruction of existing enterprises for the production of veneer sheets.

Subject invention

Claims (2)

1. A device for leveling dry spike tape from a dryer, cutting it into sheets, sorting and laying sheets onto platforms using conveyors and rollers for moving veneer during processing and automatic scissors with a system of photo cells, characterized in that for sorting veneer sheets an aggregate mounted after the scissors and consisting of endless branches of rubber belts, below which section sections with platforms, fitted in the upper part with folding shelves and a photo cell, is applied with a drum of orders used by the operator when visually sorting the spike sheets to move them with belts to the appropriate sections. 2. A device according to claim 1, characterized in that for braking the veneer tape at the time of cutting the sheet with scissors, a lifting frame with stops supported in front of the scissors is used.