SU880722A1 - Milling-breaking down machine - Google Patents

Description

I

The invention relates to the sawmill and woodworking industry, and more specifically to machines for the processing of round timber into lumber and wood chips

Known milling machine for processing round timber for sawn timber and wood chips, including a clamping device, a feed mechanism made in the form of a chain conveyor with stops and mounted on the course of the feed milling heads}.

The disadvantages of this machine are low productivity, since the processing of logs occurs when moving them along the axis, digging up to 3-.6 mm deep in the knot zone and kososlo, a large deformation of the chip ends with a milling depth of more than 40 mm and the presence of a large chip fraction.

The purpose of the invention is to increase the productivity of the machine, due to the cross feed of the log.

The goal is achieved by the fact that the machine is equipped with base-forming milling cutters for basing grooves on the log, and the feeding mechanism is equipped with movable and stationary clamping rails for fixing the log along the basing grooves, and the movable clamping guides of the rod are rigidly connected to the base-forming cutters with the possibility of their joint return —accessible movement in the feed direction, and the movable and fixed clamping guide pins have grooves in which the stops of the chain conveyor are located, at the same time the profile shtang corresponds to the profile of the basing grooves on the log.

FIG. I depicts a milling machine, side view; in fig. 2 - the same, front view; in fig. 3 — the post-processing log is in the 15-based device; in fig. 4 - basing grooves are cut in the log and it is clamped by moving shchangamn guides along them; in fig. 5 — The log is transmitted by means of movable guide rods and still; in fig. 6 is a section A-A and a of FIG. 2

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Claims (1)

The milling machine consists of a clamping device comprising two fixed stops 1, lower hinged levers 2 and two movable stops 3, driven from cylinder 4, four base-forming milling cutters 5, making a joint direction with the movements; reciprocating movement from cylinders 7, fixed guide rods 8, passing inside their supply chains 9 with stops 10, cylinders II for clamping the log between the rods and milling heads 12 to form full lamellas on both sides. Processing of round timber on dvuhkantny timber and technological chips is as follows. In the machine base, the log is clamped between the fixed stops 1 located in a plane parallel to the direction of movement of the log and the movable stops 3 with the help of cylinders 4. The forming log adjacent to the fixed stops I parallel to the feed direction of the log, which allows to get one face during milling of the lumber along the entire length of the log. Then, using cylinders 7, the four base-forming mills 5 are raised together with movable guide clamp rods 6, thus forming basing grooves on a log perpendicular to the axis of the log, which include movable guide rods 6, having in cross-section the shape and dimensions of basing notches. By means of cylinders 11, the log is clamped between the shchtangs 6 along the clamping recesses, then the stops 3 and the folding levers 2 are retracted and the log moves down simultaneously, with the base-milling cutters 5. The following log is fed into the base device. At the same time, the previous log with the help of the stops 10, the feed chains 9 is moved along the guides of the rods 6 and 8 to the main milling heads 12, where two layers of the bar are formed. Log fixing is provided by frictional forces between guide rods 6 and 8 along the base grooves created by cylinders 11. To enable processing of logs of any length and ensuring the required rigidity of the milling heads, several heads 12 are provided on each side (in Fig. 2 shown three pieces). The speed of movement of the log, the feed chains 9, the movable rods 6 and the base-forming milling cutters 5 are the same, which ensures the production of chips of the required dimensions and the autonomous operation of the machine components for creating base grooves and forming full lamellas. When re-passing a double side beam through the machine, a four side beam is obtained, having two base plates at an angle of 90 ° to each other along the entire length of the log. According to the calculations of ZNIIMOD, the productivity of the machine is increased by 3.5-4 times in comparison with existing machines. The invention includes a milling machine for processing round timber for sawn timber and technological chips, including a clamping device, a feed mechanism made in the form of a chain conveyor with stops and mounted along the feed path milling heads, characterized in that, in order to increase productivity, due to lateral feed logs, the machine is equipped with basoform milling cutters for bearing recesses on the log, and the feed mechanism is equipped with moving and fixed clamping rods for fixing These logs are located along the grooves, the movable clamping guide rods are rigidly connected to the base-forming mills with the possibility of their joint reciprocating movement in the feed direction, and the movable and fixed clamping guide bars have grooves in which the stops of the chain conveyor are located, while the profile rod corresponds to the profile of the basing grooves on the log. Sources of information taken into account during the examination I. N. Makovsky. Theories and designs of woodworking machines., Lesia Industry, 1975, pp. 386-391, fig. 14A-21 (prototype) ,.