CS233631B1 - Device for seating and control of swinging and sliding guides of frame saw - Google Patents

Abstract

The invention relates to swivel mountings and horizontally slidable lower guides frame saws and solves them simultaneously variation depending on the feed rate cutouts and bending of the saw frame. The essence of the invention is that that on slide (2) sliding on a frame saw stand guide (1) is provided pin (3) for bearing (4), on the body (5) is pivotally mounted lower guides (6) firmly attached to the lever (9) provided with a slide (11) rotatable on the pin (10) mounted in the back (12) fixedly connected by a shaft (13) for both sides of frame saw stands, of which the arm (14) is articulated with the auxiliary connecting rod (15), eccentrically mounted on the main shaft of the frame saw. Opposite opposite the lever (9) is on the body (5) the lower guides (6) on the pin (17) actuator-operated rod (16). The invention finds application in woodworking industry.

Description

The present invention relates to the mounting of pivotable and horizontally displaceable lower guides of a frame saw and at the same time solves their controlled oscillation in dependence on the displacement amount of the slots and the bending of the saw frame.

The current structures of the pivoting and horizontally displaceable lower guides of the frame saw are solved by a complex system of lever mechanisms, eccentrics, rods and levers with a large number of joints. Therefore, the bearing arrangement is very labile, which is given by the sum of clearances in many rotary bearings and the deflection of levers and rods. This results in instability of the lower guides and thus inaccurate saw frame guidance, resulting in large tolerances in the thickness of the lumber and the surface of the lumber is of poor quality. Lability of the whole system causes frequent breakdowns and thus the frame saw downtime. The structures are designed with the center of rotation above or in the upper part of the guides, which again deteriorates their stability.

The above-mentioned drawbacks of the pivoting and horizontally displaceable lower guides are eliminated by the device according to the invention, characterized in that on the support horizontally displaceable on the guide of the frame saw frame a bearing bearing pin 1c is rotatably supported. with a lever provided with a pivot,

-4,233,631 mounted in the link fixedly connected to a shaft common to both sides of the frame saw stands, the arm of which is articulated to an auxiliary connecting rod mounted eccentrically on the main shaft of the frame saw, while opposite to the lever.

The lower guides mounted on the body on the rigid pin rotatably on the bearings do not allow further undesirable movement in another plane or vibration. The new solution guarantees the required stability of the lower guides, enables their controlled swing and eliminates the other disadvantages of the previous solutions. It enables to increase the quality of timber, performance and efficiency of the frame saw.

These advantages of the novel solution according to the invention in terms of the stability of the lower guides and the simplicity of the mechanism for the controlled swing of the saw frame in dependence on the size of the sliding displacement and the inclination of the saw frame result from the following description.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front elevational view, FIG. 2 is a horizontal axial section, and FIG. 3 is a vertical axial section.

The support 2 mounted on the guide 1 mounted on the frame saw frame is provided with a pin 3 for receiving bearings 4, on which the body 5 of the lower guides 6 is rotatably mounted. The horizontal displacement of the body 5 is enabled on the pin 17 by a tensioned rod 16 operated by a non-illustrated servo drive. In the lower guides 6, the slide 7 with the lower cross member 8 of the not illustrated saw frame is drawn. Opposite to the rod 16, a lever 9 with a slide 11 rotatably mounted on the pin 10 is fixedly attached to the body 5. The slide 11 is mounted in a link 12 fixedly connected to the shaft 13

233 S31 common to both sides of the not illustrated frame saw stands, the arm 14 of which is articulated to an additional connecting rod 15, eccentrically mounted on the not illustrated main saw shaft of the frame saw.

The mechanism for the controlled adjustment of the swivel size of the body 2 of the pivotable lower guides 6 in dependence on the amount of cut of the cutout and the bending of the saw frame driven by the auxiliary connecting rod 15 works as follows:

The link 12 fixedly connected to the shaft 13 is swiveled by an arm 14 articulated to the auxiliary connecting rod 15, which ensures the swing of the link 12 at a constant angle, and the swing of the lever 9 with the slide 11 the movement of the body 5 of the pivotable lower guides 6 by means of a rod 16, which is controlled by a servo drive (not shown), which is connected to the control of the sliding displacement amount.

The invention finds application in the wood industry.

Claims (1)

SUBJECT OF THE INVENTION 233 631 Device for supporting and controlled swinging of swinging and horizontally displaceable lower saw guides of the frame saw, characterized in that on the slide (2) horizontally movable on the guide (1) of the frame saw stand there is a pin (3) for bearing bearings (4) pivotally mounted body (5) of lower guides (6), fixedly coupled to a lever (9) provided with a slide (11) pivotable on a pivot (10), supported in a link (12) firmly connected to a shaft (13) common to both sides of the frame stands saw, whose arm (14) is articulated to an auxiliary connecting rod (15) mounted eccentrically on the main shaft of the frame saw, while opposite to the lever (9) on the body (5) of the lower guides (6) is mounted on the pin (17) actuator-controlled linkage (16).