RU2141397C1 - Feeding mechanism of woodworking machine - Google Patents

Abstract

FIELD: woodworking equipment for woodworking industry. SUBSTANCE: feeding mechanism comprises guide bar with working surface which is made in the form of aerostatic support. Located between working surface of guide bar and material being sawn is power-driven feeding belt which is reeved with tension over driving pulley and driven pulley. Aforesaid embodiment of feeding mechanism improves operational efficiency of aerostatic support of guide bar in feeding mechanism. EFFECT: higher efficiency. 1 dwg

Description

 The invention relates to woodworking equipment and can be used at woodworking enterprises.

 In the simplest manual woodworking machines, guiding rulers are used to base the processed material when moving it relative to the cutting tool (N.V. Makovsky et al. Theory and design of woodworking machines. Textbook for high schools, 3rd edition, revised and supplemented. - M .: Lesn. Prom-t, 1990, p. 141 - analogue).

 The disadvantage of such devices is manual feeding and insufficient clamping of the processed material to the guide line, which does not provide reliable basing of it.

 The known feed mechanism of the band saw machine LSD-150. The processed material is based on the working surface of the guide line. Movement of the processed material along the guide line is carried out by a feed roller driven from the electric motor through gears. The roller is pressed to the material being processed to transmit traction and the material to be pressed to the guide line is carried out with the help of a pneumatic cylinder (Prokofiev G.F. Intensification of wood sawing with frame and band saws. -M.: Timber industry, 1990. p. 240 - analogue).

 The disadvantage of this design of the feed mechanism is the insufficient reliability of the feed of the processed material, since due to the significant friction forces of the processed material on the guide bar, the total drag force can reach a value equal to the amount of traction.

 A known feed mechanism of a woodworking machine, in which to reduce the friction of the processed material on the guide line, the working surface of the latter is made in the form of an aerostatic support. The feed of the processed material is carried out using a pressure feed roller. This design of the mechanism is shown in the patent of the Russian Federation N 2092304, MKI B 27 B 5/16, 27/10, 1997 for the invention "The feed mechanism of the woodworking machine" and taken as a prototype.

 The disadvantage of this design of the feed mechanism is the high air flow due to the surface roughness of the processed material.

 The invention is aimed at improving the efficiency of the aerostatic support guide line of the feed mechanism.

 This is achieved by the fact that in the feed mechanism, which includes a guide ruler with a work surface in the form of an aerostatic support, a drive feed belt is placed between the work surface and the material to be sawed, put on the drive and driven pulleys with tension.

 A comparable analysis with the prototype shows that the inventive feed mechanism is distinguished by a driving feed tape, the working branch of which is located between the working surface of the guide line and the material being processed. Therefore, the claimed design meets the criterion of "novelty."

 The drawing shows the proposed mechanism.

 The feed mechanism includes a guide ruler 1, the working surface of which is made in the form of an aerostatic support, a drive feed belt 2, worn with tension on the drive 3 and driven 4 pulleys, and pressure rollers 5. The working branch of the tape 2 is located between the working surface of the guide line 1 and the workpiece material 6, which, when the tape moves, is fed to a wood-cutting tool 7. The material being pressed 6 to the working branch of the feeding tape 2 is carried out by rollers 5 by turning the racks 8 under the action of the springs 9. When In the absence of the material being processed, stops 10 serve to limit the rotation of the uprights 8 with rollers 5 under the action of the springs 9.

 The mechanism works as follows. On the leading (drive) 3 and driven (tension) 4 pulleys, the belt 2 is pulled with tension. The working branch of the tape 2 is pressed out by the working surface of the guide line 1, which ensures their snug fit to each other. Compressed air is supplied through the blowing openings to the working surface of the guide bar, distributed along the micro-grooves and flows into the atmosphere, forming an aerostatic support. By rotating the driving pulley 3, the belt 2 is driven. Under the action of the springs 9, tending to rotate the uprights 8, the processed material 6 is pressed against the belt 2 moving along the guide line, the working surface of which is made in the form of an aerostatic support, and feeds it to the wood-cutting tool 7.

 The use of the feed mechanism of the proposed design provides reliable and accurate supply of the processed material, which has a significant roughness of the side surface, with high efficiency of the aerostatic support of the guide line.

Claims (1)

 The feed mechanism of the woodworking machine, including a guide ruler, the working surface of which is made in the form of an aerostatic support, characterized in that between the working surface of the ruler and the material to be sawn, there is a drive feed tape worn on the drive and driven pulleys with tension.