Abstract:
An inbuilt component fixing structure of a resin tank includes: a fastening seat that is provided to the inbuilt component, that is formed with a through-hole configured to fasten and fix the inbuilt component to the resin tank, and that has a contact face that contacts an inner face of the resin tank; a fixing section that projects out from the inner face and pierces through the through-hole, the fastening seat being fastened and fixed by being sandwiched between a jutting-out portion formed at a portion of the fixing section that has pierced through the through-hole, the jutting-out portion jutting out to a peripheral portion of the through-hole; and a weak portion that is formed at the fastening seat, that is thinner than a general portion of the fastening seat, and that has a lower rigidity in a removal direction of the fastening seat than the fixing section.
Abstract:
A weld bead cutting device is configured such that, a liner made as liner portions are abutted on and welded to each other is rotated around a rotation axis extending in a direction along an abutting direction, and a weld bead is cut with a cutting tool arranged among rollers in a state where the rollers are pressed against an outer peripheral surface of the liner, the rollers being arranged on both sides of the weld bead on the liner in a direction along an extending direction of the rotation axis.
Abstract:
Provided is a foreign substance inspection method for inspecting presence or absence of a foreign substance embedded in a tubular resin molded product. A dome is prepared. The foreign substance inspection method includes: a first measurement step of measuring a dimension of a first projection image of the embedded foreign substance; a second measurement step of measuring a dimension of a second projection image of the embedded foreign substance: and a calculation step of calculating the dimension of the embedded foreign substance based on a proportional relationship between the dimension of each of the projection images to a distance from a corresponding one of the light sources to the each of the projection images and the dimension of the embedded foreign substance to a distance from the corresponding one of the light sources to the embedded foreign substance.
Abstract:
A fuel tank flange section molding device including: upper and lower molds that are closed together to mold a fuel tank; a fixed section that controls an amount of molten resin flowing toward a fuel tank main body side due to the protruding portion being disposed nearer to the lower mold side than the mold face when the upper and lower molds have been closed together; a flange insert that includes a mold face capable of rotating about the fixed section to an angle sloped toward a retracting direction of the upper mold, with respect to an extension direction of the flange section; and a cut-off insert that includes a mold face that forms an end portion of the flange section at the opposite side from the fuel tank main body, and that is capable of retracting from the upper mold with respect to the lower mold.
Abstract:
A molding device of an inbuilt component fixing section of a fuel tank includes: a projection member that projects out at a placement face onto which a resin sheet that will form a tank configuration member is disposed in a molten state, and that molds a hollow bulge section in the resin sheet; an elastic body that covers the projection member, and that expands and applies pressure to the bulge section from the inside due to a non-compressible fluid being supplied into a sealed space formed between the elastic body and the projection member; a fluid supply device that supplies the fluid into the sealed space in a state in which the bulge section has penetrated through a fixing hole provided in an inbuilt component; and a fixing member that fixes a location of the elastic body corresponding to a leading end portion to the leading end portion.
Abstract:
Provided is a foreign substance inspection method for inspecting presence or absence of a foreign substance embedded in a tubular resin molded product. A dome is prepared. The foreign substance inspection method includes: a first measurement step of measuring a dimension of a first projection image of the embedded foreign substance; a second measurement step of measuring a dimension of a second projection image of the embedded foreign substance: and a calculation step of calculating the dimension of the embedded foreign substance based on a proportional relationship between the dimension of each of the projection images to a distance from a corresponding one of the light sources to the each of the projection images and the dimension of the embedded foreign substance to a distance from the corresponding one of the light sources to the embedded foreign substance.
Abstract:
Positions of both end edges of a weld bead in a bead width direction are measured over the entire circumference of a liner in a circumferential direction of the liner. Based on information on the position of the end edge, bead profile information being information on a shape of the end edge of the weld bead over the entire circumference of the liner in the circumferential direction is created. Based on this bead profile information, machining information of the liner per rotation of the liner being position information of a cutting tool in the bead width direction per phase in the circumferential direction of the liner is created so that a moving locus of the cutting tool relative to the liner along the circumferential direction of the liner approximates the shape of the end edge of the weld bead over the entire circumference of the liner in the circumferential direction.
Abstract:
A method of manufacturing a fuel tank includes: an introducing process in which a molten resin sheet formed with a tank body is introduced in a forming mold; a shaping process in which a movable member abuts against the molten resin sheet to form a molten resin projection projected in a thickness direction of the molten resin sheet; an arranging process in which the molten resin projection is inserted in an attachment hole provided in an attachment part, and the attachment part is arranged on the molten resin sheet; and a machining process in which the molten resin projection is pressurized by a pressurizing member, so as to bulge out a portion of the molten resin projection to an outer peripheral side.
Abstract:
A fuel tank flange section molding device including: upper and lower molds that are closed together to mold a fuel tank; a fixed section that controls an amount of molten resin flowing toward a fuel tank main body side due to the protruding portion being disposed nearer to the lower mold side than the mold face when the upper and lower molds have been closed together; a flange insert that includes a mold face capable of rotating about the fixed section to an angle sloped toward a retracting direction of the upper mold, with respect to an extension direction of the flange section; and a cut-off insert that includes a mold face that forms an end portion of the flange section at the opposite side from the fuel tank main body, and that is capable of retracting from the upper mold with respect to the lower mold.
Abstract:
A molding device of an inbuilt component fixing section of a fuel tank includes: a projection member that projects out at a placement face onto which a resin sheet that will form a tank configuration member is disposed in a molten state, and that molds a hollow bulge section in the resin sheet; an elastic body that covers the projection member, and that expands and applies pressure to the bulge section from the inside due to a non-compressible fluid being supplied into a sealed space formed between the elastic body and the projection member; a fluid supply device that supplies the fluid into the sealed space in a state in which the bulge section has penetrated through a fixing hole provided in an inbuilt component; and a fixing member that fixes a location of the elastic body corresponding to a leading end portion to the leading end portion.