SU1161441A2 - Mechanism for changing direction of lumber feed - Google Patents

Abstract

1. A MECHANISM TO CHANGE THE DIRECTION OF FEEDING FOR SAWN TESTERS by author. St. No. 490659, characterized in that, in order to increase the efficiency of the mechanism in ensuring that the lumber is aligned before being dropped parallel to the roller table axis, the axis of rotation of a portion of the tapered screws of the rollers placed on the side of the stop is angled to the direction of transverse movement of the unedged boards along the tapered screw rollers . 2. An apparatus according to claim 1, characterized in that the angle of the part of the helical rollers is 10-60 ° C. to the direction of transverse movement.

Description

The invention relates to the sawmill and woodworking industry and is intended to change the direction of supply of lumber and their piece by piece, l

According to the main author. St. No. 490659 a mechanism is known for changing the feed direction of lumber, including a roller table mounted on the frame, consisting of tapered rollers, the upper generators of which are located in the same horizontal plane, end stop and rotational drive of the tapered screw rollers 1.

However, the known mechanism does not provide parallel to the axis of the roller table of the issuance of lumber (unedged boards), because when the board is laterally moved along the tapered rollers, the butt, broader end falls into the zone of higher speeds, while the top end has a smaller transverse movement, which causes imbalance. This requires installation of an additional leveling device behind the conveyor.

The purpose of the invention is to increase the efficiency of the mechanism in operation by ensuring alignment of the unedged boards before dumping parallel to the axis of the roller table.

The goal is achieved by the fact that in the mechanism for changing the feed direction of the lumber, the axis of rotation of a part of the tapered helical rollers placed on the side of the end stop are angled to the direction of transverse movement of the uncut boards along the tapered screw rollers.

In addition, the angle of the part of the screw rollers is 10-60 ° to the direction of transverse movement.

FIG. 1 shows the proposed mechanism, top view; in fig. 2 - the same, side view; in fig. 3 - the principle of leveling unedged boards on a roller table.

The proposed mechanism includes a roller table 2 mounted on frame 1, consisting of two groups of tapered helical rollers, and an axial end stop 3, made in the form of a smooth wall. The helical tapered rollers are mounted so that their upper generators are in the same horizontal plane. Rollers from the top end of the roller table 2 are installed under

angle to cross feed direction. The top end is considered the end of the roller table from the end stop. The axis of rotation of the rollers from the top end of the roller table should be at an angle of 10-60 ° to the direction of the lateral movement of the boards. Rolling the rollers smaller than 10 or greater than 60 ° causes the board to skew. The exact value of the angle is determined experimentally from the design of the roller table and the parameters of sawn timber.

The screw rollers are turned with large bases towards lateral movement of the unedged boards and their issuance. By design, all rollers have the same geometric parameters. The rollers are driven by a common drive 4 and a system of 5 gears.

The mechanism works as follows.

Due to the conical design of all the rollers of the roller table 2, close to the discharge line, the board of the batch arriving at the device, having a higher speed, reaches the stop 3 and starts lateral movement. Moreover, the advance is wider, but the butt end of the unedged board, which is caused by its falling into the zone of high speeds (V). vertex (V) is compensated by more accelerated transverse movement of the apical end of the board, which is achieved by skewed rollers of the roller table 2. This is due to the fact that the speed of the lateral movement of the board on the screw rollers (Vi) is summed with the horizontal component of the linear velocity (Ul) of the skewed rollers (Hv) and their resultant speed (V) increases. The board is leveled, which ensures its delivery, for example, to a series of stops of the transverse conveyor without distortions. The next, near the reset line, the board, after some time, begins to transversely move, and the alignment process is repeated.

As a result of leveling the unedged boards, before issuing, there is no need to install additional leveling devices behind the roller table. In addition, the conditions for interchangeability and simplification of construction due to the use of rollers of the same geometric parameters. The use of such a mechanism allows one worker to be released.

Claims (2)

1. MECHANISM FOR CHANGING THE DIRECTION OF SAWS MATERIALS by ed. St. No. 490659, characterized in that, in order to increase the efficiency of the mechanism in the work of ensuring alignment of lumber before dumping parallel to the roller table axis, the axis of rotation of the parts of the conical screws of the rollers located on the end stop side are located at an angle to the direction of transverse movement of the unedged boards along the conical screw commercials. 2. The device according to π. 1, characterized in that the angle of the part of the screw rollers is 10-60 ° to the direction of transverse movement.