SU1117219A1 - Veneering machine - Google Patents

Abstract

RINGING MACHINE, including caliper with drive, shelling knife, clamping element, characterized in that, in order to expand technological capabilities by making hardened veneer and increase productivity, the machine is equipped with a hardening unit, which is made in the form of eccentric screws fixed on two opposite sides cutters and coils with reinforcing elements, the eccentric cutters being connected to the caliper drive by flexible shafts. (L with soo with

Description

The invention relates to shelling machines, mainly to machines with a constant cutting speed, and can be used in woodworking industry.

A device for veneer reinforcement is known, comprising a stand, a table, supporting, crimping and feed rollers, cassettes with reinforcing elements and an actuator. On the feed rollers, saw blades are mounted obliquely, and cassettes with reinforcing elements are mounted between the crimping and creeping rollers on the upper and lower sides of the table 1.

The disadvantage of this device is that the perforation assembly is complex, metal-intensive and cannot be built into the production line (the shelling machine plow is the scissor reinforcement assembly), since there is no place in the production lines in existing production lines. Therefore, the reinforcement unit is used to ne the belt in the production line, and for dividing the sheets: it is installed on the side of the scissors to the roller dryer.

Known shelling machine, vytyuchayuschy caliper with a drive, shelling knife, the clamping element 2.

A disadvantage of the known machine is that the spike tape along the fiber direction is not strong. On the tape after leaving the knife, starting with the looper and before the bags are formed on the edges, along the fiber lines, cracks appear or the old cracks that have been obtained by peeling increase.

The purpose of the invention is to improve the technological capabilities by producing hardened veneer and increasing productivity.

This goal is achieved by the fact that a shelling machine, which includes a driven sunnort, a shelling knife, and a clamping element, is provided with a reinforcement unit, which is designed as eccentric cutters fixed on a caliper on two opposite sides and a catup. 1ec with a reinforced element, moreover, eccentric cutters are connected to the sunport drive by flexible shafts.

FIG. 1 shows a machine, top view; in fig. 2 shows section A-A in FIG. one; in fig. 3 - a general view of an eccentric cutter; in fig. 4 - top view of perforated top view at exit from a lupi machine; in fig. 5 is a section BB in FIG. four; pas figs. 6 - hardened veneer, top view; on fi1. 7 is a section bb of FIG. 6

Shelling machine consists of a bed 1, left 2 and 3 N. shpdelnye dibs, knife sushiurt 4 with shelling knife 5 and crimping line 6, mounted on the yoke 7.

For connection of the support 4 and the clamping heads 2 and 3 and giving them working motions, a kinematic unit 8 serves. The block 10 clamped in the spindle x 9 is driven into rotation from the main shaft 11, which

connected to an electric motor 12. A system of tapered gears 13, which are rigidly mounted on a support shaft 14, is set in motion by the support screws 15, and the latter are driven by a support, which is moved by the guide 16 to the rotating chopper. The reciprocating movement of the caliper is produced by the support nuts 17, which are rigidly connected to the caliper body. The accelerated drive and caliper retraction is carried out by an electric motor 18.

On both sides in the horizontal plane on the caliper 4 with the possibility of rotational movement and adjusting movement (for milling nests on the surface of the block of a depth equal to the thickness of the spike, which subsequently pass through the shearing knife, turn into perforation) eccentric replaceable milling cutters 20 are rigidly fixed on the holders 19 which transmits the torque through

bevel gears 21 and flexible shafts 22. The eccentricity of the milling cutter is equal to the caliper nodachi per revolution — the thickness of the veneer.

In the production of peeled tol veneer (the chin produced by the spon varies in

0 during the month no more than 1-2 times and, therefore, the cutters should be changed according to the thickness of the spike. The number of revolutions of the milling cutters is set in accordance with the ratio y-, where Y is the circumferential speed of the block, as is known, for most of the shelling machines, it is constant and f is the length of the perforation, which can vary from 20 to 50 mm.

For pasting the edges with a perforated veneer reinforcement 23

Q (Fig. 2) after leaving the shelling knife on the caliper 4 are rigidly fixed coaxially with the cutters 20, the upper coils 24, the lower coils 25, intended for fastening the reels with reinforcing element, the guide rollers 26, to which the reel is strengthened 27, for example, paper tape, cans 28, equipped with glue-lubricating rollers 29 and nip rollers 30. The latter are spring-loaded to CTOjry 31, which is also securely fastened to the caliper 4.

The machine works as follows. On the caliper 4, a shelling knife 5, a pressure bar 6 and a holder 19 with eccentric cutters 5 (an eccentricity, the diameter and thickness of the latter are selected depending on the thickness of the junction of the perforation and peripheral speeds) are set with respect to the axis of the spindles 9.

To prepare the reinforcement unit, the coils 24 and 25 are loaded with rolls with the reinforcing element, filled with tanks 2c with glue (for example, marks "φ", "Н," К, "Б, etc., for gluing paper with paper), after which, from the reels 24 and 25 with reels, the ends of the reinforcing element 27 are unwound, are passed through the rollers 29 and 26, and their ends are glued to each other above the table 31 to enter the guide rollers 30 (in the lower reels of the tape, the reinforcing element 27 passes through the cutouts of the table top 31).

After centering and securing the blockhead 10 at the centers 9 through the electric motor 12 and the main shaft 11, a rotational movement is given, and the caliper 4 is translational, using the support shaft 14 and the screw pair 15 and 17. At the same time, the peeling process is carried out with the simultaneous formation of perforation veneer tapes, as eccentric cutters on the surface of the rotating churak form undercuts to the peeling, the depth of which corresponds to the veneer thickness, and, passing over the shelling knife at the undercut sites, the perforations appear

which depend on the peripheral speed of the blockage, the number of revolutions and the thickness of the mills.

Sheet veneer with perforated edges 23, a passage after the knife, with its front edge abuts against reinforcing paper tapes, the ends of which are glued to each other from the upper and lower reels. Capturing her. the veneer enters between the pressure rollers 30 which are spring-loaded to the table (whose surface is rubberized) under pressure of the spring force, tapes smeared with glue are pressed into the hole from below and above, and in the area of each perforation and on the edges the reinforcement elements are formed and glue bonds are formed speed equal to the speed of high-performance machines.

Thus, the veneer, perforated with eccentric cutters and shelling knife, is covered with edges by reinforcing elements, producing reinforced veneer, which reduces the cracking of the veneer tape during the subsequent operations in the looper, on the scissors during the drying process, and also during forming packages, resulting in improved grade veneer.

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Claims (1)

SHAFTING MACHINE, including a caliper with a drive, a peeling knife, a clamping element, characterized in that, in order to expand technological capabilities by manufacturing reinforced veneer and increase productivity, the machine is equipped with a reinforcing assembly, which is made in the form of eccentric cutters fixed to the support from two opposite sides and coils with reinforcing elements, with eccentric milling cutters connected to the caliper drive by flexible shafts. Fig 1 I17219