SU144978A1 - Semiautomatic multi-sawing unit for cross cutting logs - Google Patents

Description

Semi-automatic multi-sawing units for cross-cutting of sawn logs with an individual sawing program according to predetermined schemes are known, including a longitudinal conveyor and a multi-saw machine with idler saws mounted on the same shaft, driven by a group electric motor. However, the performance of such units is insufficient.

The described unit for increasing labor productivity and providing two-way supply of logs when working on two sorting conveyors is made in the form of reciprocating and synchronously switched on conveyors for switches, which are equipped with flag switches acting on the conveyor drives; cradles in front of these conveyors, to which the logs are dropped and sawn, and located under the cradles for assortment conveyors rolling down the cradles. To secure the whip during cutting, pneumatic clamps are mounted above the cradles, and the bases of the cradles are foldable. To feed the topper saw to each of the whip conveyors on the shaft of the saw bed, a gear wheel of a pinion pneumatic actuator rigidly connected to the bed is installed. In FIG. 1 shows a diagram of the unit; in fig. 2 is a section along A-A in FIG. one.

The unit for lateral sawing consists of a multi-saw /, reciprocating and synchronously activated longitudinal conveyors 2, cradles 3 installed in front of the conveyors, sorting conveyors 4 installed under the cradles, a scraper conveyor 5, a control panel 6 and a protective casing 7.

No. 144978-2. The whips 8 to be sawn are fed from the narrow-gauge railway trains, on which they were delivered, to the unloading ramps 9. At the same time, two whips 8 can be fed to the unit, but they are sawn one by one in the order set by the operator. From the overpass 9, the whip 8 enters the longitudinal conveyor 2, which moves it with its front end until the flag switch 10 does not stop the drive // of the conveyor 2. Then the resetter 12 delivers the whip 8 to the receiving cradles 3 on which it is fixed clamps 13 with pneumatic actuator M. Spring 15 cm dies blow whip 8 on the cradle 3 when it falls on it. The folding base 16 of the cradle is held in the absence of load in a horizontal position by means of a counterweight 17, and in the loaded state by a stopper 18.

Evaluating the whip 8, the operator places an order for cutting it in one of the programs. The saws 19 of this program, alternately driven by the electric motor 20, are pulled onto the whip. The feed of the saw 19 is determined by acting on the rails 21 of the pneumatic actuator 22 on the gear wheel 23, which is rigidly connected to the frame 24 of the saw 19. Each is cut; from saws 19 is located between the cradles 3. Once the cut is legitimate, the electromagnets 25 retract the stoppers 18, the cradles 3 are released, and their folding bases 16 turn relative to the hinges: 26, resulting in the assortments 27 rolling down the conveyor 4, and the bases 16 after resetting return to the original position. The gap between the assortments on the sorting conveyor is ensured by the fact that the period between the inclusions of two adjacent saws of this program is determined by the sawing time of the previous saw and the sequential dumping of the assortments.

The scraper conveyor 5, the protective cover 7 and the aprons 28 serve to collect and carry away the sawdust and waste. After finishing the cutting of the whip 8 on one side, sawing begins with the other CTopoHJ i.

The described unit makes it possible to cut without jip-like movement of the whip, to improve the use of saws and; avoid clamping them when sawing.

Subject invention

Claims (3)

1. Semi-automatic multi-sawing unit for lateral sawing of sawn logs with an individual sawing program according to predetermined schemes, including a longitudinal conveyor and a sawing machine with a saw blade mounted on one shaft, driven by a group electric motor, characterized in that, in order to increase labor productivity and Providing two side feeds of logs when working on two sorting conveyors, it is made in the form of reciprocating and synchronously activated conveyors for x ystov, preceded by interacting with the ends whip flag switches acting on the drives of each conveyor installed in front of these conveyors cradles, which are reset and whips produced sawing them, and the conveyors located beneath cradles for assortments skatyvayuschihs with cradles. 2. The unit according to claim 1, characterized in that, in order to secure the whip during sawing, pneumatic clamps are installed above the cradles, and the bases of the cradles are made folding. 3. The unit on the PP. 1 and 2, characterized in that, in order to supply the toe saw to each of the whip conveyors, a shaft-mounted pneumatic drive rod rigidly connected to the bed of the saw blade is installed on the shaft of the saw blade.