RU2536139C2 - Device for orientation of wood particles - Google Patents

Abstract

FIELD: woodworking industry.

SUBSTANCE: device for orientation of wood particles comprises odd and even guide elements arranged along the direction of orientation on holders. The guide elements are made with the ability of their reciprocate motion in opposite directions horizontally. The guide elements are made with the ability of movement in one vertical direction, and with the ability of turning of the wood particle during lifting of the elements moving in opposite directions, and with the ability of remaining in the same direction when lowering the elements.

EFFECT: increased quality of orientation of wood particles.

3 dwg

Description

The invention relates to the woodworking industry and can be used in the manufacture of particle boards from oriented chips.

A device for leveling particles, including guide elements placed on a frame made with the possibility of reciprocating movement in the horizontal plane [US No. 4506778, IPC B65G 47/24. Flake aligner including reciprocating baffles. - 03/26/1985].

A device for orienting wood particles is known, including guiding elements located on a frame made with the possibility of oscillatory motion in a vertical plane [SU No. 1595642, IPC B27N 3/14. A device for orienting wood particles. - 1990, Bull. No. 36].

Also known is a forming machine for carpet flooring made of wood particles, containing an orienting device that includes guiding elements placed on a frame made with the possibility of reciprocating vibrations [SU No. 574347, IPC B29J 5/04 Forming machine for carpet flooring from wood particles. - 1977, Bull. No. 36].

In the known devices, the orientation of the particles occurs due to a slight change in the angle of the particles during vibration of the guide elements in the horizontal or vertical plane, which is ineffective, therefore, these devices provide low quality of orientation and have low productivity.

A device is known that implements a method for orienting wood particles, including odd and even guide elements located along the orientation direction on the holders, made with the possibility of their reciprocating horizontal movement [US No. 3478861, IPC B27N 3/14. Orienting wood strands. - 11/18/1969].

In the known device, particles that do not rotate between the guide elements in one cycle of their movement, return to their original state and prevent the passage of newly supplied particles, which leads to disruption of the orientation process and reduces its quality.

The invention solves the problem of improving the orientation quality of wood particles.

The technical result from the use of the invention is to improve the quality of orientation due to the possibility of orienting wood particles of different lengths and eliminating clogging of the guide elements.

The indicated technical result is also achieved by the fact that in the device for orienting wood particles, including odd and even guide elements arranged along the orientation direction on the holders, arranged to reciprocate in opposite directions horizontally, the guide elements are arranged to move in one vertical direction, and with the possibility of unfolding wood particles when lifting moving in opposite directions elements, and with the ability to stay in the same direction when lowering the elements.

The inventive device for orienting wood particles is thus distinguished by the execution of even and odd guide elements with the possibility of simultaneous lifting with horizontal movement "back and forth" and simultaneously lowering with horizontal movement of elements "back and forth". This improves the quality of orientation, the possibility of simultaneous orientation of particles of different lengths, and also eliminates clogging of the device.

Figure 1 presents a General view of the device; figure 2 - the shape of the voltage pulses supplied to the electromagnets 7 and 10; figure 3 - the shape of the voltage pulses supplied to the electromagnets 8 and 11.

The device for orienting wood particles includes guide elements 1 and 2, made in the form of plates or rods and placed parallel to each other in the orientation direction on the holders 3-6. The holders 3 and 4 hold the odd elements 1, the holders 5 and 6 the even elements 2. The device also contains electromagnets 7-10, the longitudinal axes of which are located relative to the horizontal plane at an angle of 30 ... 60 °, and in the direction of movement of the forming conveyor 11, the axis of the electromagnets 7 and 8 are located up, and the axis of the electromagnets 9 and 10 are down. The holder 3 is connected to the rod of the electromagnet 7, the holder 4 is connected to the rod of the electromagnet 8, the holder 5 is connected to the rod of the electromagnet 9, and the holder 6 is connected to the rod of the electromagnet 10.

A device for orienting wood particles works as follows.

A sawtooth voltage is applied to the electromagnets 7-10, the shape of which is shown in FIG. 1, the voltage being applied to the electromagnets 7 and 10 in antiphase to the voltage supplied to the electromagnets 8 and 9. As the voltage increases during periods t _{1, the} rods of the electromagnets 7-10 are extended , with decreasing voltage in the period t ₂ - retract. Therefore, in periods t _{1, the} odd guide elements 1 move up and forward (relative to the movement of the forming conveyor), and the even guide elements 2 move up and back. In periods t _2, elements 1 move down and back, and elements 2 move down and forward.

Wood particles are fed between the restriction plates (not shown in FIG.) To the guiding elements 1,2. Particles unfolded in the orientation direction fall between elements 1 and 2. The remaining particles that are across or diagonally elements 1 and 2, in the period t ₁ when moving elements 1 forward and up, and elements 2 - back and up, rotation and lift movement are given , therefore, the particles are thrown at the same time as the rotation (for example, clockwise). In the period t _{2, the} particles are in the falling phase, while the guiding elements reverse, the elements 1 move back and down, and the 2 elements move forward and down, and the particles are not rotated (counterclockwise).

Even if the separation of particles from elements 1 and 2 does not occur, the particles still turn around, because when the guiding elements 1 and 2 rise in the period t _{1, the} particles are pressed against the elements much stronger than when the elements 1 and 2 are lowered in the period t ₂ , therefore, in the period t _{1 the} particles unfold in counter-moving elements 1 and 2, and in the period t _{2 the} particles slip and predominantly maintain their position until the next reversal cycle.

In the following cycles of movement of elements 1 and 2, the process is repeated, underdeveloped particles are deployed along the guiding elements 1 and 2 (i.e., in the orientation direction) and are placed on the forming conveyor 11 in a chip carpet (not shown in Fig.).

The device allows to reduce the angle of laying particles in the chip carpet, which helps to increase the strength of the finished plates in bending.

Claims (1)

A device for orienting wood particles, including odd and even guide elements arranged along the orientation direction on the holders, arranged for their reciprocating movement in opposite horizontal directions, characterized in that the guide elements are arranged to move in the same direction vertically, and with the possibility of the unfolding of a wood particle when lifting elements moving in opposite directions, and with the ability to remain in the same direction when lowering the elements.

Images