SU1440721A1 - Line for processing coniferous logs - Google Patents

Abstract

FIELD: forest industry. The purpose of the invention is the integrated use of raw materials. The line includes a technologically connected section 1 of removing the tarred layer of wood, section 2 of debarking - logs, section 3 of milling process chips and section 4 of sawing up into sawn timber. Section 1 is connected to an additional bunker 5 by means of a removal line, similar to all other sections. Section 1 includes two pairs of clamping levers 7, represented by itself as a log orientation unit. The removal of the tar layer is carried out by a mechanism made, for example, in the form of cutters 8. The logs are fed to section 1. To orient the log in the resinous zone relative to the processing cutters 8, a command is given to 9. As a result, the log is clamped by levers 7 and turns. Depending on the width of the tool, the operator spreads the cutters to the required width. Chips are removed at a thickness of 2.5-4.0 mm. After removing the tarred layer, the cutters are retracted and, through sensor 9, give a signal to release the log from the levers 7. Further processing is carried out in accordance with the accepted processing technology. 3 il. with S (L S

Description

FIG.

The invention relates to the forest industry, in particular to lines for complex processing of logs of coniferous species, and may not be used in all enterprises leading to the processing of logs for sawn timber and wood chips with the preliminary production of raw materials for wood chemical production,

The purpose of the invention is the integrated use of raw materials.

FIG. 1 is a diagram of a line j in FIG. .2 and 3 - options for installing mills during processing.

The line includes the technologically connected section t of removing the tarred layer of wood, section 2 of the debarking of the log, section 3 of the milling of the processing chips, and section 4 of sawing up into sawn timber. At the same time, the removal section 1 of the tarred wood layer is connected to the additional storage bin 5 via a removal line, similar to all other sections connected to the storage hoppers 6.

The 1 removal section of the tarred wood layer includes two pairs of clamping levers 7, which are movable in the vertical plane and constitute a log orientation unit. Removing the tar layer is carried out by a mechanism made, for example, in the form of cutters 8. The mechanism for removing the tarred layer of wood is connected by means of a control sensor 9.

Before the processing of logs of needles, the line works in the following way.

Logs are served by the transporter to the site .1. The operator determines how the log 10 is oriented by the tarred zone 11 and, if it is necessary to distribute it by zone 11 to the plane of cutters 8, gives a command to the sensor 9, through which the signal goes to the clamping lever drive mechanism 7. They clamp the log (in one or two places, depending on the length of the log) and deploy it around the axis. Usually, the carres on the trunk are located symmetrically on both sides of the trunk, so the turn of the log does not exceed 90 ° to one or the other.

Depending on the width of the tool, the operator spreads the cutters to the required

with Q

15

20 5

30 5

d

.

five

the width and when combining the machining plane with the plane of the blades of the cutters 8 brings the cutters in such a way as to be. Removed (milled) chips not more than 2.5-4.0 mm thick, since. only this layer contains the largest percentage of resinous (thickness of wood, without taking into account jumpers between the horseshoes). Since the parameters of the crust thickness and the depth of the tarred part of the wood in the area of the pit are determined by the technological parameters of the tapping, holding the parameters of the milling depth presents no difficulties. After removing the tarred layer while moving the log, the cutters are retracted from the log. Through the sensor 9, when they are retracted, a signal is sent to release the log from the levers 7, after which the log is further processed in accordance with the accepted processing technology.

Removing the tarred layer of wood should be done only until the logs are barked, since when the bridges are barked, the lintels between the prunings, which are the most tarry, easily break off (their height is 10-12 mm, thickness is 2-3 mm) and are removed together. with bark removal, which reduces the overall yield of valuable technological raw materials for the wood-chemical industry and the efficiency of the line.

The annual production of tar chips can reach 230-250 thousand cubic meters. m, which allows the production of 40.7 tons of extraction rosin, or 13.6 tons more than the same amount of osmol. The technological raw material, chips, was removed in the zone of the carra, has a high content of resin (EC) (up to 25-27%), while osmol is only 13.5%. They ensure the complete mechanization of the production process, the reduction of losses of raw materials and the construction of new osmolization-producing enterprises, the reduction of labor-intensiveness and labor resources. Production of rosin-based raw materials is possible throughout the year in the lower warehouses of enterprises and on the stock exchanges of raw materials, as well as in woodworking and other enterprises. The energy consumption of the grinded chips is drastically reduced.

Claims (1)

Claims of the invention for processing logs of coniferous breeds, including successively installed log debarking mills, cutting mills and splits, connected by means of removal lines to storage bins, so that that, for the purpose of the integrated use of raw materials, the line is provided with a section for removing the tarred layer of wood, connected by ten eleven 0 removal lines with an additional storage hopper located in front of the debarking site, while the tarred raw material removal section includes a log orientation unit, made in the form of two pairs of clamping levers, moving in a vertical plane and connected through a control sensor to the tarry layer removal mechanism wood, located between the clamping levers. Fig 2 Rig.z