摘要:
The present invention applies to a molding method for a fiber-reinforced plastic structure having an internal cavity, in particular, for example, a vehicle wheel (10) made from fiber-reinforced plastic. Firstly, grain groups (6a), which mainly consist of a plurality of high-rigidity grains, are accommodated in bags (6), and a plurality of cores (4a-4h) are formed. A reinforcing fiber substrate, such as a prepreg or textile, is placed between the plurality of adjacent cores so as to be interposed therebetween. For example, a plurality of molding base materials are prepared by surrounding each core (4a-4h) with a prepreg (3), and the plurality of molding base materials are combined and placed inside a molding die, and the molding base materials are compression molded. When compression molding, a part of the outer surface of the cores (4a-4h) is locally pressurized, and the internal pressure of the cores is increased, changing the shape thereof, thus eliminating voids that are present between the cores and the prepreg and/or the prepreg and the molding surface of the die.
摘要:
Apparatuses and methods for forming a joggle (24) and a longitudinal ridge (18) in a multi-ply composite charge (34) are disclosed. Charges may be formed in a forming press (40) that comprises a joggled die (80), with a longitudinal ridge (84) and a joggle (88) that crosses the longitudinal ridge, and a conforming die (50), with a series of longitudinally-spaced die fingers (52). The die fingers include pairs of die members (54) configured to move laterally between a closed position and an open position, with each die member configured to tilt longitudinally.
摘要:
A molding machine for making thermoplastic composites contains: a machine frame (10), a platform (20), a heating device (30), a vacuum means (40), and a gas barrier film (60). The machine frame (10) includes a working stage (11). The platform (20) is mounted on the working stage (11) and includes channels (22), a curved pattern portion (23) and plural tiny holes (24) which are arranged on the top surface of the platform (20), wherein the plurality of tiny holes (24) communicate with the channels (22). The platform (20) also includes a connector (21) fixed on one side thereof and communicating with the channels (22). The heating device (30) is secured on a bottom end of the platform (20) and heats a working material on the platform (20). The vacuum means (40) is arranged in the machine frame (10) and includes a pipe (41) for coupling with the connector (21). The gas barrier film (60) is flaky and covers the top surface of the platform (20).
摘要:
A multilayer molded piece is produced by using a composite skin constituted by a skin material and a foam sheet and having a tensional modulus of elasticity of 950 kg/cm2 or lower and satisfying the relationship among tension modulus of elasticity E (kg/cm2), heat shrinkage F (%), and thickness (t) as defined by the following expression: 20/(E x t) + F » 2.5. A large and complicatedly shaped multilayer molded piece is provided which has a good appearance which is free from breaks and wrinkles, as well as from uneven marks on the skin material on the surface thereof.
摘要:
End of arm tooling system and a method for manufacture is provided. The end or arm tooling system provides automated material handling, part manipulation, preforming and transferring of a pre-impregnated carbon fiber material. A robot is connected to end of arm tooling for automated material handling and transfer operations from at least a lower preform tool system where light compression is applied to a molding press. The end or arm tooling system includes a cured silicone membrane as well as vacuum and air blow off, allowing for robotically preforming, picking up and dropping-off pre-impregnated carbon fiber materials which are notoriously sticky and difficult to handle.
摘要:
Es wird ein Formwerkzeug zur Herstellung eines Verbundbauteils vorgestellt, das aus einem in das Formwerkzeug (1) eingesetzten und mittels eines Vakuums darin fixierten Träger (2) und einer in dem Formwerkzeug (1) zumindest partiell mit dem Träger (2) zu verbindenden Werkstoffschicht besteht, wobei in dem Formwerkzeug (1) eine Trägeraufnahmegeometrie (3) vorhanden ist, die Vakuumsauger (4) und mehrere Vakuumfelder (5, 6, 7) aufweist. Die erfindungsgemäße Lösung besteht darin, dass die einzelnen Vakuumfelder (5, 6, 7) von einem ersten Vakuumfeld (5) ausgehend, kaskadenförmig und richtungsorientiert aktivierbar sind. Darüber hinaus wird ein Verfahren zur Fixierung eines Trägers (2) in einem Formwerkzeug (1) zur mindestens partiellen Verbindung des Trägers (2) mit einer Werkstoffschicht, zur Herstellung eines Verbundbauteils beschreiben, das durch folgende Verfahrensschritte gekennzeichnet ist: -Ansetzen eines mit einer Werkstoffschicht zu versehenden Trägers (2) an mindestens einen in einer Trägeraufnahmegeometrie (3) eines Formwerkzeuges (1) vorhandenen Vakuumsauger (4), dessen Vakuum den Träger (2) zunächst in wenigstens einem Punkt fixiert, -Freigabe eines ersten, den Vakuumsauger (4) aufnehmenden Vakuumfeldes (5) durch Ansteuerung mindestens eines Vakuumsaugventils (11, 12), sodass der Träger (2) in diesem Vakuumfeld (5) vollständig angesaugt wird, -anschließende Freigabe mindestens eines weiteren Vakuumfeldes (6), das das erste Vakuumfeld (5) einschließt oder sich an das erste Vakuumfeld (5) anschließt, sodass dadurch ein Vakuumkreis (8) entsteht und der Träger (2) somit durch eine kaskadenförmige Erweiterung der Vakuumfelder (5, 6, 7) in dem Formwerkzeug (1) fixiert wird.
摘要:
The present invention applies to a molding method for a fiber-reinforced plastic structure having an internal cavity, in particular, for example, a vehicle wheel (10) made from fiber-reinforced plastic. Firstly, grain groups (6a), which mainly consist of a plurality of high-rigidity grains, are accommodated in bags (6), and a plurality of cores (4a-4h) are formed. A reinforcing fiber substrate, such as a prepreg or textile, is placed between the plurality of adjacent cores so as to be interposed therebetween. For example, a plurality of molding base materials are prepared by surrounding each core (4a-4h) with a prepreg (3), and the plurality of molding base materials are combined and placed inside a molding die, and the molding base materials are compression molded. When compression molding, a part of the outer surface of the cores (4a-4h) is locally pressurized, and the internal pressure of the cores is increased, changing the shape thereof, thus eliminating voids that are present between the cores and the prepreg and/or the prepreg and the molding surface of the die.
摘要:
A multilayer molded piece is produced by using a composite skin constituted by a skin material and a foam sheet and having a tensional modulus of elasticity of 950 kg/cm2 or lower and satisfying the relationship among tension modulus of elasticity E (kg/cm2), heat shrinkage F (%), and thickness (t) as defined by the following expression: 20/(E x t) + F » 2.5. A large and complicatedly shaped multilayer molded piece is provided which has a good appearance which is free from breaks and wrinkles, as well as from uneven marks on the skin material on the surface thereof.