Wood slicing apparatus

Claim 2

A wood slicing apparatus comprising a cutting unit, driving means coupled to said cutting unit for driving said cutting unit in a rectilinear motion along a line entering a board-shaped base material from which portions are to be severed, and a support member for holding said board-shaped base material thereon, said cutting unit including at least one set of blade holding elements spaced from and opposed to each other at a predetermined spacing for accommodating said board-shaped base material therebetween and having a plurality of blade accommodating grooves therein, and a plurality of thin cutter blades in said grooves in said blade holding elements and each blade projecting from the opposed surfaces of said blade holding elements and the blades in each element being in a straight line with blades in one line being opposed to the blades in the other line, successive thin blades in each blade holding element projecting further toward the other blade holding element, the driving means moving the cutting unit in a direction relative to the base material for causing the blades projecting the least to engage the base material first, said thin blades being adjustably mounted in said grooves in said holder elements with respect to the distance said blades project toward each other, said blades projecting toward the opposed surfaces of said blade holding elements at an angle thereto with the cutting edges of said thin blades being on the edges of said thin blades facing the opposed blade holding element and the end of each thin blade and the cutting edge thereof being at an obtuse angle.

Claim 3

A wood slicing apparatus as claimed in claim 1, in which the blades in the holder element remote from said support member being offset in the direction of movement of the cutting unit from the blades in the other cutting unit a distance less than the spacing between blades, whereby said blades in the remove holder element engage the base material ahead of the corresponding blades on the other holder for holding the base material against said support member during cutting.

Claim 4

A wood slicing apparatus as claimed in claim 1 wherein said driving means comprises a chain having the opposite ends thereof connected to opposite ends of the cutting unit in the direction of movement thereof, a sprocket mechanism coupled to said chain, a sprocket driving mechanism coupled to said sprocket mechanism for driving said sprocket mechanism in forward rotation, reverse rotation and for stopping operation of said sprocket mechanism, and detection switch means coupled to said sprocket driving mechanism and engagable by said cutting unit at various positions of said cutting unit during its movement for controlling operation of said sprocket driving mechanism.

Claim 5

A wood slicing apparatus as claimed in claim 1 wherein said cutting unit comprises a plurality of said blade holding elements and cutting blades side by side in a direction transverse to the direction of movement of said cutting unit during severing.

Claim 6

A wood slicing apparatus as claimed in claim 1 further comprising transfer means for receiving severed portions from said cutting unit and transferring said severed portions, and pressure roll means for receiving severed portions from said transfer means and smoothing the surfaces of the severed portions, said pressure roll means including a pair of smoothing rollers which are provided on opposite sides of the transfer path of said severed portions for pressing against the opposite surfaces of said severed portions, and apressing roller for pressing said severed portions in a direction perpendicular to the direction in which said pair of smoothing rollers presses said severed portions.

Claim 7

A wood slicing apparatus as claimed in claim 5 wherein said transfer means for transferring portions severed by said cutting unit includes a receiving and transferring mechanism which is raisable and lowerable beneath the position at which said portions are severed from said base material and which includes means for positioning said severed portions with the side surfaces thereof in a forwarding direction for said severed portions, and belt conveyor means adjacent the lower position of said transferring mechanism for receiving the severed portions from said positioning means and forwarding them in the forwarding direction.

Claim 8

A wood slicing apparatus as claimed in claim 5 in which said pressure roll means further comprises feed-in means, said feed-in means including a feeding roller for feeding the severed portions forwarded from said transfer means into said smoothing rollers and position maintaining means between said feeding roller and said smoothing rollers for maintaining said severed portions in the forward direction during the feeding thereof to the smoothing rollers.

Claim 9

A wood slicing apparatus comprising a cutting unit, driving means for driving said cutting unit in rectilinear relative motion to a board-shaped base material to sever slats from said base material, smoothing rollers for smoothing surfaces of slats severed by said cutting unit, a transfer unit for receiving and transferring said slats severed by said cutting unit toward said smoothing rollers, and a feed-in unit for feeding said severed slats forwarded from said transfer means into said smoothing rollers, said cutting unit including a guide frame, a rectilinear rail member on which said guide frame is guided in its cutting movement, at least one set of blade holding elements on said guide frame spaced from and opposed to each other at a predetermined spacing for accommodating said board-shaped base material therebetween a plurality of thin cutter blades adjustably held on said blade holding elements and each blade projecting from the opposed surfaces of said blade holding elements and the blades in each element being in a straight line with the blades in one line being opposed to the blades in the other line, successive thin blades in each blade holding element projecting further toward the other blade holding element, the driving means moving the cutting unit in a direction relative to the base material for causing the blades projecting the least to engage the base material first, said blades projecting toward the opposed surfaces of said blade holding elements at an angle thereto with the cutting edges of said thin blades being on the edges of said thin blades facing the opposed blade holding element and the end of each thin blade and the cutting edge thereof being at an obtuse angle, each of said thin cutter blades being composed of equal length break-off portions with the joints therebetween being at the same angle to the cutting edge as the end of said thin blade is to the cutting edge, and a plurality of supporting levers each having a plurality of holes therethrough at intervals equal to the intervals between joints between said break-off portions, said supporting levers being provided at the rear of said cutter blades, and a securing member extending through one of said holes in each supporting lever for fixing said supporting levers to said holding elements in such a manner that the amount each of said cutting blades projects from said holding members is in accordance with the hole through which said securing members extends, said driving means including a chain having the opposite ends thereof connected to opposite ends of the cutting unit in the direction of movement thereof, a sprocket mechanism coupled to said chain, a sprocket driving mechanism coupled to said sprocket mechanism for driving said sprocket mechanism in forward rotation, reverse rotation and for stopping operation of said sprocket mechanism, and detection switch means coupled to said sprocket driving mechanism and engagable by said cutting unit at various positions of said cutting unit during its movement for controlling operation of said sprocket driving mechanism, said smoothing rollers being a pair of smoothing rollers which are provided on opposite sides of the transfer path of said slats for pressing against the opposite surfaces of said slats, and a pressing roller for pressing said slats in a direction perpendicular to the direction in which said pair of smoothing rollers presses said slats, raisable and lowerable beneath the position at which said slats are severed from said base material and which includes means for positioning said slats with the side surfaces thereof in a forwarding direction for said slats and belt conveyor means adjacent the lowered position of said transferring mechanism for receiving the slats from said positioning means and forwarding them in the forwarding direction, and feed-in means between said transfer means and said smoothing rollers and including a feeding roller for feeding the slates forwarded from said transfer means into said smoothing rollers and position maintaining means between said feeding roller and said smoothing rollers for maintaining said slats in the forwarding direction during the feeding thereof to the smoothing rollers.

Claim 10

A wood slicing apparatus comprising a cutting unit, driving means for driving said cutting unit in rectilinear relative motion to a board-shaped base material to sever slats from said base material, smoothing rollers for smoothing surfaces of slats severed by said cutting unit, a transfer unit for receiving and transferring said slats severed by said cutting unit toward said smoothing rollers, and a feed-in unit for feeding said severed slats forwarded from said transfer means into said smoothing rollers, said cutting unit including a guide frame, a rectilinear rail member on which said guide frame is guided in its cutting movement, at least one set of blade holding elements on said guide frame spaced from and opposed to each other at a predetermined spacing for accommodating said board-shaped base material therebetween a plurality of thin cutter blades adjustably held on said blade holding elements and each blade projecting from the opposed surfaces of said blade holding elements and the blades in each element being in a straight line with the blades in one line being opposed to the blades in the other line, successive thin blades in each blade holding element projecting further toward the other blade holding element, the driving means moving the cutting unit in a direction relative to the base material for causing the blades projecting the least to engage the base material first, said blades projecting toward the opposed surfaces of said blade holding elements at an angle thereto with the cutting edges of said thin blades being on the edges of said thin blades facing the opposed blade holding element and the end of each thin blade and the cutting edge thereof being at an obtuse angle, each of said thin cutter blades being composed of equal length break-off portions with the joints therebetween being at the same angle to the cutting edge as the end of said thin blade is to the cutting edge, and a plurality of supporting levers each having a plurality of holes therethrough at intervals equal to the intervals between joints between said break-off portions, said supporting levers being provided at the rear of said cutter blades, and a securing member extending through one of said holes in each supporting lever for fixing said supporting levers to said holding elements in such a manner that the amount each of said cutting blades projects from said holding members is in accordance with the hole through which said securing members extends, said driving means including a chain having the opposite ends thereof connected to opposite ends of the cutting unit in the direction of movement thereof, a sprocket mechanism coupled to said chain, a sprocket driving mechanism coupled to said sprocket mechanism for driving said sprocket mechanism in forward rotation, reverse rotation and for stopping operation of said sprocket mechanism, and detection switch means coupled to said sprocket driving mechanism and engagable by said cutting unit at various positions of said cutting unit during its movement for controlling operation of said sprocket driving mechanism, said smoothing rollers being a pair of smoothing rollers which are provided on opposite sides of the transfer path of said slats for pressing against the opposite surfaces of said slats, and a pressing roller for pressing said slats in a direction perpendicular to the direction in which said pair of smoothing rollers presses said slats, raisable and lowerable beneath the position at which said slats are severed from said base material and which includes means for positioning said slats with the side surfaces thereof in a forwarding direction for said slats and belt conveyor means adjacent the lowered position of said transferring mechanism for receiving the slats from said positioning means and forwarding them in the forwarding direction, and feed-in means between said transfer means and said smoothing rollers and including a feeding roller for feeding the slates forwarded from said transfer means into said smoothing rollers and position maintaining means between said feeding roller and said smoothing rollers for maintaining said slats in the forwarding direction during the feeding thereof to the smoothing rollers.