SU1395486A1 - Sawing unit with circular saws - Google Patents

Abstract

The invention relates to wood processing and can be used in equipment intended for the longitudinal sawing of logs and bars into lumber. The purpose of the invention is to increase the accuracy and purity of sawn timber processing. On saw blades 1 and 2 and movably mounted a circle - L1: e saw 3, with each pair of circular saws 3 located in one plane of cutting set in one pair of guides 5, 6. Installing saws in common guides There is no row. 3 il.

Description

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The invention relates to the wood processing industry and can be used in equipment intended for the longitudinal sawing of logs and bars for sawn timber.

The purpose of the invention is to increase the accuracy and purity of sawn timber processing. ; FIG. 1 shows the cutter node with the lower location of saw ales, general view; Fig, 2 - section -A in Fig.1; FIG. 3 - cutting unit

upper location saw blade (view.

I The cutting unit of a machine with circular saws contains parallel-mounted saw shafts 1 and 2 with movably mounted saws 3 and A, detachable: 1st guides 5, 6 and 7, mounted on rods 8 and 9. Directions are fixed on the rods 8 and 9 b using nuts 10 and 11, the guides and 6 are made common And for each bar of circular saws located on shafts 1 and 2 in the same plane of the cutting and mounted above the saw blade or below it, The cutting unit also includes a ngoca feedbone 12 and an upper feeder roll 13) of the walt positioned with or above. Charger depending on the placement of the saw shafts 1 and 2 and guides 5 and 6; The cutting unit works as follows |

When assembling sets of saws and guide lines, they are mounted on guide rods 5 and 7, respectively, on rods 8 and 9, then on saw blades 1 and 2, respectively, on saws 3 and 4, then on rods 8 and 9, guides 6 and 7,

After assembling the saw blades and guide blocks that direct the blocks, they are fixed with nuts 10 and 11.

When applying the material to be processed, the rollers 12 or 13 saws 3 form the lower part of the cutting height, saws 4 finally form the cutting according to the height of the material being processed.

At the same time, the feed rollers and guides must be installed with a gap ensuring the passage between

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do lumber them without contact with guides.

As a result of experienced sawing, it was established that if the distance between the upper generatrix of the lower drum and the guideway is the total for saws at the lower shaft position, less than 3 mm, then the material being processed is plugged in the guides, And if the specified distance more than 5 t-iM, then the initial bending stiffness of saw blades is reduced, which leads to a decrease in the accuracy of dimensions and shape of sawn timber.

The installation should be similar in the case of the upper location of the saw shaft.

The use of common guides for each pair of saws installed in the same cutting plane on different shafts allows to increase the accuracy and cleanliness of the surface treatment of sawn timber, to avoid steps along the junction line of cuts. I

In addition, when cutting circular saws mounted on a subsequent shaft during feed, the kinematic angle of the meeting ensures self-engaging of the material to be cut, which helps to remove the boards from the cutting zone.

Claims (1)

Invention Formula Cutting unit with circular saws, including two parallel saw blades with movably mounted circular saws located in the same cutting plane, saw guides and feed rollers, characterized in that, in order to improve the accuracy and cleanliness of sawn timber, the guide boards are mounted on bearing element and placed between the saws so that each pair of circular saws located on different shafts in the same cutting plane is installed in one pair of guides, while the feed rollers and guides installed with clearance for the passage of lumber. ten eight phage.1 ten Thebes