JPS5850963Y2 - Roller bar device in veneer straightening machine - Google Patents

Description

[Detailed Description of the Invention] (Purpose of the Invention) The present invention is a roller for a veneer straightening machine that includes a small diameter roller bar, a rubber roller that presses the veneer veneer against the roller bar, and a back roller that supports the roller bar. This invention relates to the improvement of a bar device, and its purpose is that the roller bar of conventional devices of this kind is formed in one piece in the axial direction, and that it is connected from both sides with parallel synthetic resin guides. Since it was supported by a bar and rotated at high speed, its radius of curvature was limited to about 15 mm or more due to its structure and strength, and this could be adjusted to a desired thickness.
For example, it is difficult to manufacture a roller bar with a radius of curvature of about 5 to 1Q mm, which is a serious functional difficulty that makes it impossible to satisfactorily correct curls in thin veneer veneers, for example, veneer veneers with a thickness of about 1 to 2 mm. Not only that, but the method of lubrication of the high-speed rotating members of the roller bar has serious mechanical problems such as abrasion, scratching noise, popping out, breakage, etc. in the synthetic resin guide bar. It was devised in an attempt to eliminate the drawbacks and provide a new type of veneer straightening machine that can straighten curls in thin veneer veneers and also enables stable lubrication of high-speed rotating parts. .

(Structure of the invention) The present invention consists of a small-diameter roller bar 1, a rubber roller 3 that presses the veneer veneer 2 against the roller bar 1, and a back roller 4 that supports the roller bar 1. A veneer straightening machine characterized in that the roller 1 is divided into many parts in the axial direction and supported so as to be freely driven, and the roller bar 1 is constituted by a cylindrical oil-impregnated bearing member 1b fitted into a shaft 1a. It is a roller bar device in a machine.

That is, as shown in the figure, an example of the implementation of the present invention is that a veneer veneer 2 having a small diameter, for example, about 5 to 10 mm, is curled upward and is conveyed by carrying conveyors 5 a and 5 b in a direction perpendicular to the fiber direction. It is carried between a small-diameter roller bar 1 with a radius of curvature and a large-diameter rubber roller 3 with a radius of curvature of about 100 to 15 Qmm, and is pressed against the rubber roller 3 by an air cylinder 6 or the like. The veneer veneer 2 curled upward by applying pressure
The roller bar 1 is bent to form fine cracks on the upper surface of the roller bar 1, and the curls are corrected to make them flat before being continuously carried out.

In this case, the roller par 1 is divided into many parts in the axial direction, and each of the divided roller pars 1 is connected to a back roller 4 made of hard urethane resin or the like by a U-shaped member 7.
It is placed on top and supported so as to be freely driven.

The roller par 1 has a cylindrical oil-impregnated bearing member 1b rotatably fitted into a hard shaft 1a fixed to the U-shaped member 7, and in some cases, a shaft further fixed to the U-shaped member 7. The device is configured so that oil can be replenished by forcibly supplying oil from the outside into the cylindrical oil-impregnated bearing member 1b through the center of the bearing member 1a.

Further, the rubber roller 3 has a belt 8 wrapped around its outer periphery and is configured to be able to rotate at the same speed as the carry-in conveyors 5 a and 5 b.

(Effects of the invention) Since the present invention is constructed as described above, the structure of the roller par 1 divided into a large number of parts allows for the five to five parts required for correcting the curl of a thin veneer veneer 2 of about 1 to 2 mm. lQm
This makes it possible to forcibly install a small-diameter roller par 1 with a radius of curvature of about Stabilizing the lubrication method and extending the lifespan, especially the sap discharged when straightening this type of veneer veneer 2.
It is designed to prevent wood powder, sludge, etc. from entering and solidifying into high-speed rotating members, thereby stabilizing them and extending their lifespan. Therefore, the radius of curvature of the roller par of conventional equipment has been
For strength reasons, the thickness is limited to 15 mm or more, making it difficult to correct curls in thin veneer veneers of 1 to 2 mm. Also, with synthetic resin guide bars, there are problems with the lubrication method of the roller par, which causes wear and tear. This is an extremely effective device that has completely eliminated serious problems such as scratching noise, popping out, and breakage.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention, in which Fig. 1 is a side view of the whole, Fig. 2 is a plan view of the roller par, and Fig. 3 is a sectional view.

Claims (1)

[Scope of utility model registration request] In a veneer straightening machine consisting of a small-diameter roller bar, a rubber roller that presses a veneer veneer against the roller bar, and a back roller that supports the roller bar, the roller bar is divided into many parts in the axial direction and supported so as to be freely driven. 1. A roller bar device for a veneer straightening machine, characterized in that the roller bar is constituted by a cylindrical oil-impregnated bearing member fitted into a shaft.