RU2014213C1 - Breaking down chain machine - Google Patents

Abstract

FIELD: wood-working and wood-cutting industries. SUBSTANCE: breaking down machine for working round woods into timbers and process chips has frame, feeding mechanism, datum and breaking down device with notching and splitting knives, cross chain conveyor, which is positioned in vertical plane. Notching knives are made in the form of teeth, splitting knives are made saw-shaped. Knives are secured on cross-pieces of chain conveyor. EFFECT: enhanced reliability in operation. 7 dwg

Description

 The invention relates to a sawmill and woodworking industry, and more particularly to machines for processing round timber into lumber and wood chips.

 Known milling machine for processing round timber into lumber and wood chips, including a basing device, a feed mechanism made in the form of a chain conveyor with stops for longitudinal feeding of logs and milling heads installed along the feed.

 The disadvantages of this machine is low productivity.

 Also known is a milling machine for processing round timber into lumber and wood chips, including a basing device, a feed mechanism and a blocking device made in the form of mills.

 The disadvantages of this machine are low productivity, poor quality of chips due to variable lengths, a large number of small fractions along the length, variable cutting angles and crushing of the end surfaces of the chips.

 The purpose of the invention is improving the productivity of the machine and improving the quality of technological chips.

 This goal is achieved in that the machine is equipped with a feed mechanism, basing and blocking devices. The brushing device is made in the form of notching and cleaving knives, a transverse chain conveyor, the latter is vertically placed, has sprockets and chain contours, while the sprockets are mounted on the shafts of the chain conveyor, the chain circuits are connected by means of traverses, and the cutting knives are made in the form of teeth, cleaving - a sawtooth shape, with notching and cleaving knives mounted on the traverse.

 In FIG. 1 shows a blocking machine, side view; in FIG. 2 - the same, top view; in FIG. 3 - traverse on a chain with notching and cleaving knives fixed on it, rear view; in FIG. 4 - same, top view; in FIG. 5 is a section AA in FIG. 4; in FIG. 6 - part of a shearing flat knife; in FIG. 7 - the location of the notching knives in the cross-section, increased, view from the front.

 The blocking machine consists of a chain device mounted on a bed 1 and made in the form of a vertically transverse chain conveyor, including two shafts 2 with sprockets 3 fixed at their ends and two chain circuits. For chains 4, chain contours, are attached, for example, by welding a beam 5, on which knives are cut 6 in the form of teeth and cleaving flat 7 - sawtooth. Fastening knives to the traverse can be carried out in various ways, for example, bolts in dovetail grooves.

 To balance the thrust force, to prevent deflection of the chain, support rollers 8 are installed, and a suction nozzle 9 is used to remove chips from the blocking device.

The feed mechanism is made in the form of a manipulator 10, including a basing device in the form of a hydraulic cylinder of a clamp 11 and a hydraulic rotary mechanism 12 for clamping from the ends and turning a short-sized round timber 13 by 90 ^{about an} axis.

 For the supply of round timber in the area of capture of the manipulator and the harvesting of the bars is a step chain conveyor 14.

 The processing of short round timber for timber and technological chips is as follows.

 From the hopper of the drive (not shown), short round timber 13 is fed to the step conveyor 14, with which, moving one step (length), they enter the capture zone of the manipulator 10. Then the round timber from the ends is clamped by the hydraulic cylinder of the clamp 11, using the manipulator rises to the level of processing and pushes on the chain blocking device.

 The chain contours in the form of two chains 4 lead to the rectilinear movement of the beam 5 with the cutting knives 6 in the form of teeth fixed to them and cleaving flat knives 7 of a sawtooth shape.

 Cutting knives, moving in front, cut the chips along the length, and shearing knives separate the chips from the processed layer of the beam, and shearing knives produce transverse-longitudinal cutting, since they have a sawtooth shape, which prevents the destruction of the plate of the beam at the exit of the knives.

 To compensate for lateral axial loads, the cutting edges of shearing knives have a symmetrical bias in two directions from the middle of the node along the length. The rectilinear movement of the knives and the formation of equal layers of the timber is ensured by the movement of the chains 4 along the thrust rollers 8.

After processing the next layer, the pushing stops and the round timber 13 is diverted from the blades of the chain blocking device, then with the help of a hydraulic rotary mechanism 12 the round timber 13 is rotated 90 ° ^about its axis, and the formation of the next layer occurs in a similar way.

 After processing the last layer of the timber, the manipulator lowers it onto the step chain conveyor 14, which, moving one step, feeds the next round timber into the capture zone, while the timber is moved outside of it.

Claims (1)

 CHAIN BRUSHING MACHINE, including a feeding mechanism, a basing and chipping device, characterized in that, in order to increase productivity and improve the quality of wood chips, the chipping device is made in the form of cutting and shearing knives and a transverse chain conveyor, the latter being vertically arranged, has sprockets and chain contours, sprockets are fixed on the shafts of the chain conveyor, chain contours are connected by means of traverses, and notching knives are made in the form of teeth, cleaving knives are sawtooth th form, the notching and shearing blades mounted on the traverse.

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