SU1744012A1 - Device for sorting lumber - Google Patents

Abstract

SUMMARY OF THE INVENTION: The installation includes a feed conveyor 16, a floor 2 behind it with openings and with gates 3 installed on it in the last zone. The latter have actuating levers 17c with fixed electromagnets 18. A suspension pusher 4 with a drive is placed above the floor 2 and located on the same distance by the stops 5. Under the slide 3 with a step equal to the step of the stops 5 of the pushing conveyor 4, there are pockets of sorted lumber. Each electromagnet 18 is electrically connected to the control panel 31. With the drive of the conveyor 4, a kinematically coupled cam 8 rotates one turn when the stops 5 of the conveyor 4 move one step. A cam 8 is connected with a spring-loaded ha 10 with pushers 12 according to the number of gates 3. The electromagnets 18 are connected through springs to swivel latches interacting with the pushers 12. 2 Il. i (L

Description

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The invention relates to the woodworking industry and can be used, in particular, for sorting boards and boards after sawing logs.

Sorting platforms based on TSP-3 conveyors are known, where the sawn timber is dismantled manually.

The disadvantage of such sites is low productivity and the presence of heavy manual labor of workers.

Closest to the proposed installation of the technical essence and the achieved effect is a well-known sorting machine PSP-ZBA and similar PSP-40-PSP-12. In this machine, the lateral movement of the boards (boards) is performed by the stops of the lower branch of the mounted pushing conveyor located above the flooring. The stops of the conveyor are located at the same distance between them. On the flooring installed gates, under which made carN5

mana for sorted lumber. The distance between the pockets is equal to the step of the stops of the pushing conveyor. When a board (beam) approaches a chamber corresponding to its type, the gate of this pocket with the help of an electromagnet is opened by a command from a control panel or a tracking circuit, and the board (bar) falls into a pocket.

A disadvantage of the known machine is low efficiency due to the high power of the electromagnets. The decrease in efficiency is caused by relatively large capital costs and operating costs, since the speed of movement of the working body of the electromagnet is large, the dynamic loads on the gate are larger and, to ensure sufficient strength, the gate is metal-intensive. Additional damping devices are required to reduce the noise during the operation of the gates. In addition, switching devices of corresponding power are required to control high-power electromagnets. Since about 20-30 pockets are needed for sorting lumber, the costs of using high power electromagnets are substantial.

The aim of the invention is to increase the efficiency of the installation by reducing the power of the gate electromagnets.

The goal is achieved by the fact that the installation for sorting sawn timber, including a feed conveyor, a flooring behind it with openings and with gate valves installed on it in the latter area, with drive levers, located above the flooring, a hinged pushing conveyor with a drive and spaced lugs located at equal distances, located under gates with a pitch equal to the pitch, stops of the pushing conveyor, pockets of sorted lumber, electromagnets of the gates and control panel, equipped with a cam, kinematically with connected with a drive of a pushing conveyor with the possibility of its rotation by one turn when moving the stops of the pushing conveyor by one step, kinematically connected with a spring-loaded cam with pushing elements according to the number of dampers and turning 0

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by means of springs with electromagnets, the electromagnets are rigidly fixed on the drive levers, and the latches are mounted on the latter with the possibility of interaction with the pushers.

The presence of a cam coupled to the drive of the pushing conveyor, tippers with pushers, electromagnets mounted on the drive levers of the gates and latches connected by springs to the electromagnets, allows to engage the drive levers of the gates on the push rods, which ensures smooth opening (closing) of gates by means of a drive of the pushing conveyor. One turn of the cam is carried out during the movement of the pushing conveyor by one step, which allows for tight synchronization of the gate operation cycle with the position of the lumber on the flooring. The cam profile determines the speed of movement of the gate, therefore it is possible to ensure smooth movement without large dynamic loads.

The power of the electromagnets is small, as they only turn the latches at a small angle. Electromagnet control electromagnets are also of low power.

1 shows a schematic installation for sorting sawn timber; FIG. 2 shows section A-A in FIG. one.

On the supports 1 mounted flooring 2 with gates 3. The hinged pushing conveyor k contains stops 5 for advancing lumber on deck 2, the drive drum 6 of the conveyor 4 is articulated by a chain gear 7 with a cam 8. The circumference of the drive drum 6 is equal to the step of the stops 5 of the conveyor 4. C The inner surface of the cam 8 is in contact with the roller 9, which is attached to the tractor 10, the second end of which is articulated with the spring 11, which is attached to the frame. The gas ha 10 contains pushers 12 according to the number of gates 3. Under the gates 3 between the supports 1 there are pockets with accumulators formed by inclined planes 13 and the gates 14 of unloading sorted sawn timber onto carts 15.

At the level of flooring 2, the feed conveyor 16 is installed. On the drive

The lever 17 of each gate 3 is fixed to an electromagnet 18, the rm of which is combined by a spring 19 with a latch 20.

Each electromagnet 11 is connected by an electrical circuit (not shown) with a control panel 21.

In the initial position, all the gates 3 and 14 are closed, there is no lumber on the flooring 2, the drives of the conveyors 4 and 16, as well as the electromaterials, are closed 18.

The operation of the plant is as follows.

Include drives conveyors 4 and 16.

The operator entering the address zone (Fig. 1) externally inspects and determines the number of the pocket to which the board is addressed in accordance with its parameters. With the stops 5 of the conveyor 4, the board moves along the deck 2. When the stops 5 are moved one step, the cam 8 rotates one turn, and the ton 10 makes a cycle of back and forth motion back and forth. When the board approaches the corresponding pocket, the operator from the control panel turns on the electromagnet 18 of the gate 3 of this pocket, the latch 20 rotates and engages with the pusher 12, as shown in figure 2 by dashed lines. When moving forward 10, the pusher 12 acts on the drive lever 17. The gate 3 opens and the board advancing on the floor 2 falls into the pocket accumulator. During the movement of the rod 10 times ago, the gate 3 closes under the action of its own mass forces.

The operator simultaneously accompanies several boards and can turn on electromagnets with a large lead time, but the gates 3 will open only when the board approaches the card. This is ensured by the presence of a spring 19 and a sufficient length of the pusher 12. If the electromagnet 18 is turned on at the time when the pusher 12 is not in the initial position, the latch 20 will not engage with the pusher 12, but will be pressed to its surface. After completing the cycle of the reciprocating motion of the gigi 10, the pusher 12 returns to its original position

and the latch 20, the electromagnet 18 of which was included with the lead, will engage in engagement with the stop 12 and in the next cycle of movement of the rod 10 and the corresponding gate 3 will open.

After the accumulation of several boards of the same grade, the worker, opening the gate 14, drops them onto the trolley 15 and puts them in a foot.

The proposed setup for sorting lumber can also work with an automatic addressing system.

Electromagnets with nominal power of 30 W and starting 708 VA instead of electromagnets with nominal power of 975 W and starting 31600 VA were used to sort lumber with a thickness of 19–100 mm and a length of 2–6 m.

Metal capacity of gates reduced by 30%.

Claims (1)

Invention Formula A sawmill sorting plant, including a feed conveyor, a flooring with openings and with installed gates with drive levers installed on it in the last zone, a suspended pushing conveyor with a drive mounted above the flooring, lugs located at the same distance under the gates step equal to the pitch of the thrust of the pushing conveyor pockets of sorted lumber, electromagnets of the gates and control panel, characterized in that, with the aim of improving the efficiency of work through smart power of the electromagnets of the gates, it is equipped with a cam, kinematically connected with the drive of the pushing conveyor with the possibility of its rotation one turn when moving the stops of the pushing conveyor by one step, kinematically connected with the spring-loaded cam with the pushers by the number of gates and rotary latches, connected by means of springs with electromagnets, the electromagnets being rigidly fixed on the drive levers, and the latches are mounted on the latter with the possibility of interaction with the pushers.  five 1 6 7 9. 20