Patents Assigned to Meinan Machinery Works, Inc.
  • Patent number: 10488109
    Abstract: Method and apparatus for dehydration of veneer sheet having therein a knot are disclosed. Veneer dehydration apparatus includes a first stationary single dehydrating roller and a plurality of second movable sectional dehydrating rollers, which rollers are disposed one above the other so that a nip through which a veneer sheet for dehydration is moved is formed between the first and second rollers. A stop device determines the initial position of each second roller relative to the first roller where a predetermined spaced distance is formed between the first and the second rollers. An urging device yieldably urges each second roller to the initial position. The second roller is movable away from the initial position against the urging force of the urging device independently of the other second rollers by a knot present in the veneer sheet and just moving through the nip between the second roller and the first roller.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: November 26, 2019
    Assignee: Meinan Machinery Works, Inc.
    Inventors: Yoshioki Nozawa, Shin-ichi Sakamoto
  • Patent number: 9764494
    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.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: September 19, 2017
    Assignee: Meinan Machinery Works, Inc.
    Inventor: Masaru Koike
  • Patent number: 9527222
    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.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: December 27, 2016
    Assignee: Meinan Machinery Works, Inc.
    Inventor: Masaru Koike
  • Patent number: 9114548
    Abstract: A method for forming a bevel cut at an end of a wood member is disclosed. A wood member is placed on a support table and a plurality of cutters mounted on and spaced along a shaft extending in parallel to the end of the wood member on the table is moved relative to the table in a direction inclined with respect to the wood member thereby to make a first cutting to form a plurality of bevel cuts. The support table is shifted in the direction parallel to the end of the wood member and a second cutting is made by the relative movement between the cutters and the table. During the first and second cutting, the wood member is pressed against the support table by a pressing member at a position adjacent to the end of the wood member and between any two adjacent cutters.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: August 25, 2015
    Assignee: Meinan Machinery Works, Inc.
    Inventor: Toshiyuki Otsuka
  • Patent number: 9079329
    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.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: July 14, 2015
    Assignee: Meinan Machinery Works, Inc.
    Inventor: Masaru Koike
  • Publication number: 20150135975
    Abstract: Method and apparatus for dehydration of veneer sheet having therein a knot are disclosed. Veneer dehydration apparatus includes a first stationary single dehydrating roller and a plurality of second movable sectional dehydrating rollers, which rollers are disposed one above the other so that a nip through which a veneer sheet for dehydration is moved is formed between the first and second rollers. A stop device determines the initial position of each second roller relative to the first roller where a predetermined spaced distance is formed between the first and the second rollers. An urging device yieldably urges each second roller to the initial position. The second roller is movable away from the initial position against the urging force of the urging device independently of the other second rollers by a knot present in the veneer sheet and just moving through the nip between the second roller and the first roller.
    Type: Application
    Filed: November 15, 2013
    Publication date: May 21, 2015
    Applicant: MEINAN MACHINERY WORKS, INC.
    Inventors: Yoshioki Nozawa, Shin-ichi Sakamoto
  • Patent number: 8805052
    Abstract: An apparatus and a method for measuring three-dimensional shape of a wood block are disclosed. A planar light beam is projected by a light emitting device against a wood block rotatably supported on its tentative spin axis in such a way that two continuous lines extending parallel to the tentative spin axis for the entire block length are illuminated on the outer peripheral surface of the block. The block with the illuminated lines is photographed at a plurality of its angular positions by a imaging device. Based on data of the photographed line images, distances between the tentative spin axis and each of the illuminated lines on the outer peripheral surface of the block are computed at a plurality of cross-sections of the block along the tentative spin axis. Distances from the tentative spin axis to the outer peripheral surface of the block, including shapes of various irregularities on the surface of the block, are measured.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: August 12, 2014
    Assignee: Meinan Machinery Works, Inc.
    Inventor: Noriyuki Hiraoka
  • Patent number: 8487994
    Abstract: An apparatus and a method for determining the annual ring center of a wood block are disclosed. A plurality of lines of path is figured out and generated. Each line of path is composed of a plurality of lines each extending normal to a line that is tangential to an annual ring in an image of the wood block end. The normal line may be figured out, for example, by calculating the variance of values of pixels lying on each of a plurality of straight lines of a filter and the sum of the variances for the plurality of straight lines at a plurality of different angular positions of the filter. The annual ring center in the image of the wood block end is determined through calculation based on the points of intersection of the generated lines of path.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: July 16, 2013
    Assignee: Meinan Machinery Works, Inc.
    Inventor: Noriyuki Hiraoka
  • Publication number: 20120325371
    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.
    Type: Application
    Filed: May 31, 2012
    Publication date: December 27, 2012
    Applicant: Meinan Machinery Works, Inc.
    Inventor: Masaru Koike
  • Patent number: 8253793
    Abstract: An imaging means captures a color image of lumber. An image processing means obtains the color distribution of the color image captured by the imaging means, compares the obtained color distribution with a predetermined color distribution of normal lumber, judges the obtained color distribution as an abnormal one when it is deviated from the color distribution of normal lumber by a predetermined value or more, and detects a defect of the lumber having the abnormal color distribution deviated by a value larger than the predetermined value in an area on the surface of the lumber captured by the imaging means.
    Type: Grant
    Filed: April 20, 2007
    Date of Patent: August 28, 2012
    Assignee: Meinan Machinery Works, Inc.
    Inventor: Noriyuki Hiraoka
  • Patent number: 8047535
    Abstract: An apparatus and a method for successively conveying a series of sheets are disclosed. The apparatus has a first conveyer for conveying a sheet in a sheet conveying direction at a first speed and a second conveyer disposed spaced vertically away from the first conveyer for conveying the sheet in the same direction at a second speed. The second conveyer has a region overlapping with the first conveyer at least for a distance corresponding to a dimension of the sheet, e.g. the width of veneer sheet, as measured in the sheet conveying direction. A suction mechanism is disposed in said overlapping region for transferring by suction the sheet in the entirety of its dimension from the first conveyer to the second conveyer and holding by suction the sheet against the second conveyer. The sheet is further moved by the second conveyer, e.g. to a sheet stacking station.
    Type: Grant
    Filed: January 12, 2009
    Date of Patent: November 1, 2011
    Assignee: Meinan Machinery Works, Inc.
    Inventors: Ritsuo Nishimura, Hideki Akita
  • Publication number: 20110203703
    Abstract: A method for forming a bevel cut at an end of a wood member is disclosed. A wood member is placed on a support table and a plurality of cutters mounted on and spaced along a shaft extending in parallel to the end of the wood member on the table is moved relative to the table in a direction inclined with respect to the wood member thereby to make a first cutting to form a plurality of bevel cuts. The support table is shifted in the direction parallel to the end of the wood member and a second cutting is made by the relative movement between the cutters and the table. During the first and second cutting, the wood member is pressed against the support table by a pressing member at a position adjacent to the end of the wood member and between any two adjacent cutters.
    Type: Application
    Filed: April 27, 2011
    Publication date: August 25, 2011
    Applicant: Meinan Machinery Works, Inc.
    Inventor: Toshiyuki Otsuka
  • Patent number: 7946321
    Abstract: The present invention is directed to a method of holding a veneer sheet which has been dried to a moisture content lower than the fiber saturation point and also heated to a temperature higher than an ambient temperature of an environment where the veneer sheet is held. The veneer sheet is bent in such way that at least a part of the veneer sheet in the longitudinal section thereof along the grain direction is curved and the same veneer sheet in any transverse section thereof perpendicular to the grain direction is substantially straight. The veneer sheet held bent is held for a predetermined period of time.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: May 24, 2011
    Assignee: Meinan Machinery Works, Inc.
    Inventors: Yukio Abe, Makoto Isobe, Issaku Okamura, Hiroshige Oda, Akihito Hamaguchi, Noriyuki Honda
  • Publication number: 20110114223
    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.
    Type: Application
    Filed: November 18, 2010
    Publication date: May 19, 2011
    Applicant: Meinan Machinery Works, Inc.
    Inventor: Masaru Koike
  • Publication number: 20110074949
    Abstract: An apparatus and a method for determining the annual ring center of a wood block are disclosed. A plurality of lines of path is figured out and generated. Each line of path is composed of a plurality of lines each extending normal to a line that is tangential to an annual ring in an image of the wood block end. The normal line may be figured out, for example, by calculating the variance of values of pixels lying on each of a plurality of straight lines of a filter and the sum of the variances for the plurality of straight lines at a plurality of different angular positions of the filter. The annual ring center in the image of the wood block end is determined through calculation based on the points of intersection of the generated lines of path.
    Type: Application
    Filed: September 24, 2010
    Publication date: March 31, 2011
    Applicant: Meinan Machinery Works, Inc.
    Inventor: Noriyuki Hiraoka
  • Patent number: 7879173
    Abstract: A method for laying a sheet over the lower surface of a base material disposed in a generally horizontal position. According to the method, the base material is supported at the lower surface thereof by a first support means, and the sheet is placed immediately below and in facing relation to the lower surface of the base material and then supported at the lower surface thereof by a second support means. The sheet and the base material are made to be in contact with each other over partial surfaces thereof. Subsequently, the first support means is moved away from the base material and the sheet and the base material are placed together on a rigid horizontal surface so that the sheet is laid substantially over the entire lower surface of the base material.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: February 1, 2011
    Assignee: Meinan Machinery Works, Inc.
    Inventor: Yukio Hattori
  • Patent number: 7778458
    Abstract: The photographing means of the present apparatus photographs a piece of wood, while the image processing means calculates degrees of circularity from the photographed images of the piece of wood, and detects images with significant degrees of circularity as knots. In addition, the image processing means 1 clips a portion including a knot from the photographed image of the piece of wood, deems a portion clipped at a predetermined threshold among the color spaces of each pixel of the clipped portions to be a blackened portion, and determines black portions with a high proportion of a number of pixels of the blackened portion to the number of pixels of the clipped portion of the knot as dead knots.
    Type: Grant
    Filed: May 16, 2006
    Date of Patent: August 17, 2010
    Assignee: Meinan Machinery Works, Inc.
    Inventor: Noriyuki Hiraoka
  • Publication number: 20100111367
    Abstract: An apparatus and a method for measuring three-dimensional shape of a wood block are disclosed. A planar light beam is projected by a light emitting device against a wood block rotatably supported on its tentative spin axis in such a way that two continuous lines extending parallel to the tentative spin axis for the entire block length are illuminated on the outer peripheral surface of the block. The block with the illuminated lines is photographed at a plurality of its angular positions by a imaging device. Based on data of the photographed line images, distances between the tentative spin axis and each of the illuminated lines on the outer peripheral surface of the block are computed at a plurality of cross-sections of the block along the tentative spin axis. Distances from the tentative spin axis to the outer peripheral surface of the block, including shapes of various irregularities on the surface of the block, are measured.
    Type: Application
    Filed: October 20, 2009
    Publication date: May 6, 2010
    Applicant: Meinan Machinery Works, Inc.
    Inventor: Noriyuki Hiraoka
  • Publication number: 20090121417
    Abstract: An apparatus and a method for successively conveying a series of sheets are disclosed. The apparatus has a first conveyer for conveying a sheet in a sheet conveying direction at a first speed and a second conveyer disposed spaced vertically away from the first conveyer for conveying the sheet in the same direction at a second speed. The second conveyer has a region overlapping with the first conveyer at least for a distance corresponding to a dimension of the sheet, e.g. the width of veneer sheet, as measured in the sheet conveying direction. A suction mechanism is disposed in said overlapping region for transferring by suction the sheet in the entirety of its dimension from the first conveyer to the second conveyer and holding by suction the sheet against the second conveyer. The sheet is further moved by the second conveyer, e.g. to a sheet stacking station.
    Type: Application
    Filed: January 12, 2009
    Publication date: May 14, 2009
    Applicant: Meinan Machinery Works, Inc.
    Inventors: Ritsuo Nishimura, Hideki Akita
  • Patent number: RE41347
    Abstract: This invention provides joining methods of single veneer piece and a joining apparatus, which can produce more efficient, and effective joining process than the conventional method and apparatus produce. In the process of carrying a single veneer piece (T) in the orthogonal direction against the joining edge (Te) on the conveyor, the joining edges of the preceding and succeeding single veneer pieces come close together, the adhesive material (Sd) is supplied to the clearance between the joining edges, and then the adhesion enhancing action is supplied to the said adhesive material (Sd) to join each single veneer piece (T) successively. The adhesion enhancing action can be applied within the adhesion enhancing section as indicated by lines (Z1) and (Z2), provided on the farther side from the edge approaching position (U) via an adhesion enhancing component (6) to move back and forth at any time while the single veneer piece (T) is being carried or such a motion is halted.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: May 25, 2010
    Assignee: Meinan Machinery Works, Inc.
    Inventors: Mikio Tsutsui, Takayuki Yamauchi, Hideki Hasegawa, Sekiji Takahashi