A method for manufacturing a substantially cylindrical dust cover (6) covering an outer side of a damper (3) extending in a predetermined direction and including bellows portions (61) that are configured to expand and contract in an axial direction and a flange portion (63) that extends radially outward, wherein an inner wall surface (110) of a mold (100) used in blow molding has a recess (130) corresponding to the flange portion (63), and wherein the mold (100) has a variable mechanism that changes an axial dimension of the recess (130) between a primary molding distance and a final molding distance, the final molding distance corresponding to a thickness of the flange portion (63), and the primary molding distance being larger than the final molding distance, the method for manufacturing the dust cover (6) comprising: a placement step of placing a molten thermoplastic resin having a tubular shape inside the mold (100) in a state where an axial dimension of the recess (130) of the inner wall surface (110) is set to the primary molding distance; a primary molding step of blowing air into the thermoplastic resin placed inside the mold (100) in the placement step to deform the thermoplastic resin along the inner wall surface (110) of the mold (100); and a secondary molding step of compressing, in the axial direction, a portion of the thermoplastic resin that is molded in the primary molding step and enters the recess (130) by changing the axial dimension of the recess (130) of the inner wall surface (110) to the final molding distance.
DUST COVER, SUSPENSION DEVICE AND DUST COVER MANUFACTURING METHOD
STAUBSCHUTZ, AUFHÄNGEVORRICHTUNG UND VERFAHREN ZUR HERSTELLUNG EINES STAUBSCHUTZES
COUVERCLE ANTI-POUSSIÈRE, DISPOSITIF DE SUSPENSION ET PROCÉDÉ DE FABRICATION DE COUVERCLE ANTI-POUSSIÈRE
2023-12-27
Patent
Elektronische Ressource
Englisch
IPC: | B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B29L INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES , Index-Schema für besondere Gegenstände in Verbindung mit Unterklasse B29C / B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge / F16F SPRINGS , Federn / F16J Kolben , PISTONS |
DUST COVER, SUSPENSION DEVICE AND DUST COVER MANUFACTURING METHOD
Europäisches Patentamt | 2022
|DUST COVER, SUSPENSION DEVICE AND DUST COVER MANUFACTURING METHOD
Europäisches Patentamt | 2020
|DUST COVER, SUSPENSION DEVICE AND DUST COVER MANUFACTURING METHOD
Europäisches Patentamt | 2021
|DUST COVER, SUSPENSION DEVICE, AND METHOD FOR MANUFACTURING DUST COVER
Europäisches Patentamt | 2021
|DUST COVER, SUSPENSION DEVICE AND MANUFACTURING METHOD FOR DUST COVER
Europäisches Patentamt | 2020
|