Abstract: A nosebar is supported by supports arranged along the longitudinal direction, and the supports are assembled to fixtures to swing independently of each other in a direction away from a log according to the reaction force of the pressing force acting on the supports. Thus, when a knife peels a knot part of the log or a fragment of the log enters a cutting edge, the portion of the nosebar pressing the knot part or corresponding to the location where the fragment enters the cutting edge is greatly deformed, while the deformation of the nosebar in the other portions is kept small. A corner of the nosebar is prevented from contacting the peeled portion of the raw wood and generating a gap when the nosebar is bent and deformed.

Abstract: A knife assembly for use in a veneer cutting machine such as a rotary veneer lathe and a veneer slicer includes a knife blade, a knife blade holder and a knife adjusting bolt with a lock nut. The knife blade holder includes a holder block having formed therethrough a threaded hole through which the knife adjusting bolt is adjustably inserted. The holder block has a first support surface that is in supporting contact with a part of one surface of the knife blade on the side thereof where a bevel face of the knife blade is formed and a second support surface that is in supporting contact with a part of a base end surface located opposite from and extending parallel to a cutting edge of the knife blade.

Abstract: A knife assembly for use in a veneer cutting machine such as a rotary veneer lathe and a veneer slicer includes a knife blade, a knife blade holder and a knife adjusting bolt with a lock nut. The knife blade holder includes a holder block having formed therethrough a threaded hole through which the knife adjusting bolt is adjustably inserted. The holder block has a first support surface that is in supporting contact with a part of one surface of the knife blade on the side thereof where a bevel face of the knife blade is formed and a second support surface that is in supporting contact with a part of a base end surface located opposite from and extending parallel to a cutting edge of the knife blade.

Abstract: A method of cutting a wood block and a veneer lathe are disclosed. Two groups of first plural contact members and second plural contact members disposed around the wood block for supporting the wood block from the periphery thereof and each having a contact portion contactable with periphery of the wood block. The first and the second contact members are spaced away from each other along the spin axis of the wood block so as to form a space between any two adjacent contact members, respectively, and arranged in such a way that a part of the contact member of one group is insertable into the space between any two adjacent contact members of the other group when the wood block is cut to a predetermined reduced diameter so that the wood block is continued to be supported further.

Abstract: Method for manufacturing diagonal plywood is disclosed. The method uses a rectangular-shaped plywood board or a joined plywood board made of a plurality of plywood boards having the same thickness and joined together into a rectangular shape is prepared. The rectangular-shaped board or joined board is cut diagonally with respect to any pair of parallel sides of the board along diagonal parallel lines spaced at a predetermined interval into a plurality of cut boards having a shape of parallelogram or trapezoid. Subsequently, the cut boards are joined together side-to-side into a joined elongated board in such a way that the opposite parallel sides thereof form the elongated sides of the resulting joined elongated board. The joined elongated board is cut across the elongated sides thereof into a plurality of rectangular-shaped boards of any desired dimension.

Abstract: A method of cutting a wood block and a veneer lathe are disclosed. Two groups of first plural contact members and second plural contact members disposed around the wood block for supporting the wood block from the periphery thereof and each having a contact portion contactable with periphery of the wood block. The first and the second contact members are spaced away from each other along the spin axis of the wood block so as to form a space between any two adjacent contact members, respectively, and arranged in such a way that a part of the contact member of one group is insertable into the space between any two adjacent contact members of the other group when the wood block is cut to a predetermined reduced diameter so that the wood block is continued to be supported further.

Abstract: A method of cutting a wood block and a veneer lathe are disclosed. Two groups of first plural contact members and second plural contact members disposed around the wood block for supporting the wood block from the periphery thereof and each having a contact portion contactable with periphery of the wood block. The first and the second contact members are spaced away from each other along the spin axis of the wood block so as to form a space between any two adjacent contact members, respectively, and arranged in such a way that a part of the contact member of one group is insertable into the space between any two adjacent contact members of the other group when the wood block is cut to a predetermined reduced diameter so that the wood block is continued to be supported further.

Abstract: A sound insulation floor structure comprises a floor backing member, a floor finishing layer, and an intermediate layer between the floor backing member and the floor finishing layer, the intermediate layer comprising a buffer member comprising a nonwoven structure. The nonwoven structure comprises a thermal adhesive fiber under moisture which is melt-bonded to a fiber of the nonwoven structure to fix the fibers. For example, the sound insulation floor structure may comprise, in sequence, a floor backing member 1, a buffer layer 2, an air layer 3, a hard layer 4, and a floor finishing layer 5. In the floor structure, a support member 6 is disposed between the buffer layer 2 and the hard layer 4. The support member may occupy 10 to 70% of a floor area. The sound insulation floor structure prevents subsidence of a floor member due to walking, achieves comfortableness to walk, and has improved floor impact sound insulation.

Abstract: A soundproof panel comprising a nonwoven structural member and a board member is prepared. The nonwoven structural member comprises a thermal adhesive fiber under moisture which is melt-bonded to a fiber of the structural member to fix the fibers. The soundproof panel may be a soundproof panel 1 comprising a nonwoven structural member 2 and a honeycomb member 3 stacked thereto. Moreover, the soundproof panel may be a soundproof panel comprising a board-like nonwoven structural member and first and second surface members stacked to first and second sides of the board-like nonwoven structural member, respectively. Further, the soundproof panel may be a soundproof panel having first and second surface members stacked through a square-pole rail member comprising a nonwoven structural member. The soundproof panel of the present invention has toughness for the lightweight design and has excellent sound absorption and sound insulation properties.

Abstract: A sound insulation floor structure comprises a floor backing member, a floor finishing layer, and an intermediate layer between the floor backing member and the floor finishing layer, the intermediate layer comprising a buffer member comprising a nonwoven structure. The nonwoven structure comprises a thermal adhesive fiber under moisture which is melt-bonded to a fiber of the nonwoven structure to fix the fibers. For example, the sound insulation floor structure may comprise, in sequence, a floor backing member 1, a buffer layer 2, an air layer 3, a hard layer 4, and a floor finishing layer 5. In the floor structure, a support member 6 is disposed between the buffer layer 2 and the hard layer 4. The support member may occupy 10 to 70% of a floor area. The sound insulation floor structure prevents subsidence of a floor member due to walking, achieves comfortableness to walk, and has improved floor impact sound insulation.

Abstract: Method for manufacturing diagonal plywood is disclosed. The method uses a rectangular-shaped plywood board or a joined plywood board made of a plurality of plywood boards having the same thickness and joined together into a rectangular shape is prepared. The rectangular-shaped board or joined board is cut diagonally with respect to any pair of parallel sides of the board along diagonal parallel lines spaced at a predetermined interval into a plurality of cut boards having a shape of parallelogram or trapezoid. Subsequently, the cut boards are joined together side-to-side into a joined elongated board in such a way that the opposite parallel sides thereof form the elongated sides of the resulting joined elongated board. The joined elongated board is cut across the elongated sides thereof into a plurality of rectangular-shaped boards of any desired dimension.

Abstract: A soundproof panel comprising a nonwoven structural member and a board member is prepared. The nonwoven structural member comprises a thermal adhesive fiber under moisture which is melt-bonded to a fiber of the structural member to fix the fibers. The soundproof panel may be a soundproof panel 1 comprising a nonwoven structural member 2 and a honeycomb member 3 stacked thereto. Moreover, the soundproof panel may be a soundproof panel comprising a board-like nonwoven structural member and first and second surface members stacked to first and second sides of the board-like nonwoven structural member, respectively. Further, the soundproof panel may be a soundproof panel having first and second surface members stacked through a square-pole rail member comprising a nonwoven structural member. The soundproof panel of the present invention has toughness for the lightweight design and has excellent sound absorption and sound insulation properties.

Abstract: A method of cutting a wood block and a veneer lathe are disclosed. Two groups of first plural contact members and second plural contact members disposed around the wood block for supporting the wood block from the periphery thereof and each having a contact portion contactable with periphery of the wood block. The first and the second contact members are spaced away from each other along the spin axis of the wood block so as to form a space between any two adjacent contact members, respectively, and arranged in such a way that a part of the contact member of one group is insertable into the space between any two adjacent contact members of the other group when the wood block is cut to a predetermined reduced diameter so that the wood block is continued to be supported further.

Abstract: An apparatus for centering a log to allow an optimum yield axis and a maximum radius of rotation of the log to be calculated more accurately than conventionally possible. The angle of rotation of a log M is detected by a rotation angle detector that is engaged with a preliminary axis c about which the log M is rotated. A contour of the log for calculating the optimum yield axis of the log and a contour for calculating the maximum radius of rotation of the log are measured separately. The contour for calculating the optimum yield axis is measured in a fixed-point manner by measuring the log at a plurality of certain measurement points with beam reflection scanners. The contour for calculating the maximum radius of rotation is measured in a comprehensive manner using swing-angle detectors engaged with contact-swinging detection members provided individually in the plural measurement sections.

Abstract: A method of cutting a wood block for production of veneer by a rotary veneer lathe. The veneer lathe includes a veneer knife, a number of rotatable peripheral drive wheels placed parallel to the veneer knife and each having a number of tooth-like projections pierceable into a wood block for driving the wood block for rotation about its axis, and a guide member for guiding veneer peeled from the wood block. The cutting of the wood block is done at a first position of the peripheral drive wheels where the veneer peeled from the wood block is pierced by the projections to such an extent that substantial splits are formed in the veneer along wood grain thereof, and also at a second position where the projections provide no force to the veneer moving past the guide member that causes the substantial splits in the veneer.

Abstract: A method of cutting a wood block for production of veneer by a rotary veneer lathe. The veneer lathe includes a veneer knife, a number of rotatable peripheral drive wheels placed parallel to the veneer knife and each having a number of tooth-like projections pierceable into a wood block for driving the wood block for rotation about its axis, and a guide member for guiding veneer peeled from the wood block. The cutting of the wood block is done at a first position of the peripheral drive wheels where the veneer peeled from the wood block is pierced by the projections to such an extent that substantial splits are formed in the veneer along wood grain thereof, and also at a second position where the projections provide no force to the veneer moving past the guide member that causes the substantial splits in the veneer.

Abstract: A method of cutting a wood block for production of veneer by a rotary veneer lathe. The veneer lathe includes a veneer knife, a number of rotatable peripheral drive wheels placed parallel to the veneer knife and each having a number of tooth-like projections pierceable into a wood block for driving the wood block for rotation about its axis, and a guide member for guiding veneer peeled from the wood block. The cutting of the wood block is done at a first position of the peripheral drive wheels where the veneer peeled from the wood block is pierced by the projections to such an extent that substantial splits are formed in the veneer along wood grain thereof, and also at a second position where the projections provide no force to the veneer moving past the guide member that causes the substantial splits in the veneer.

Abstract: A method of inspecting a broad article by using a plurality of line sensor cameras, more specifically a method of combining image data from such plural sensor cameras is disclosed. The line sensor cameras are disposed relative to the inspection surface of the broad article such that the sensor cameras have their own inspection ranges and also share in common a range which is overlapped by parts of the inspection ranges of the sensor cameras. A laser beam is projected to the overlapped range so that a line marking appears across the center of the overlapped range. The image data from any two adjacent line sensor cameras are combined through calculation in such a way that portions of data of images grabbed by the two adjacent sensor cameras are excluded on the basis of the line marking so that the inspection ranges of the two adjacent cameras cover complementarily the entire inspection range.

Abstract: A method of cutting a wood block for production of veneer by a rotary veneer lathe is disclosed. The veneer lathe includes a knife carriage which has a veneer knife mounted therein and having a cutting edge, a number of rotatable peripheral drive wheels disposed at a spaced interval in parallel relation to the cutting edge of the veneer knife and each having on the circumferential periphery a number of tooth-like projections pierceable into the wood block adjacent to the cutting edge of the veneer knife for driving the wood block from the periphery thereof for rotation about its axis, and a guide member disposed adjacent to the drive wheel for guiding veneer peeled from the wood block.

Abstract: A method and apparatus for centering a log allow a optimum yield axis and a maximum radius of rotation of the log to be calculated more accurately than conventionally possible. The angle of rotation of a log M is detected by a rotation angle detector 6 that is engaged with a preliminary axis c about which the log M is rotated. A contour of the log for calculating the optimum yield axis of the log and a contour for calculating the maximum radius of rotation of the log are measured separately. The contour for calculating the optimum yield axis is measured in a fixed-point manner by measuring the log at a plurality of certain measurement points with beam reflection scanners 8 disposed at appropriate intervals along the axis of the log M.