摘要:
The present invention provides a fibre composite laying device (10) for manufacturing a fibre composite scrim (11) for forming a fibre composite component, comprising a laying head (1), which is configured to supply a fibre composite band (2) continuously in a supply region (3); comprising a laying roller (4), which is configured to receive the fibre composite band (2) from the supply region (3), to unroll it towards a laying surface (5), and to press it onto the laying surface (5) in a laying region (6); comprising a pressing means (7) which is located between the supply region (3) and the laying region (6) and which is configured to press the fibre composite band (2) onto the laying roller (4) in a pressing region (8); and comprising a cutting means (9) which is configured to cut the fibre composite band (2) to length between the supply region (3) and the pressing region (8). The present invention further provides a fibre composite laying method (M) for producing a fibre composite scrim (11) using a fibre composite laying device (10) of this type.
摘要:
A process of compression molding an article from a curable resin is provided that includes opening a mold to an open position by displacing an upper die having an upper mold surface from a lower die having a lower mold surface. Resin is placed a mold surface and the dies are closed to an intermediate start position at a rate of from 1 to 10 cm/sec. The dies are then closed to a start position at a rate of between 25 and 60% of the rate of closure to the intermediate position. A shroud volume is evacuated for at least 3 seconds to a reduced pressure of less than 0.16 atmospheres while continuing to press toward a mold cavity volume at a rate of between 12 and 30% of the rate of closure to the intermediate start. The reduced pressure is removed as the full compression is applied.
摘要:
A forming tool (6) for forming a semi-finished product (2) comprising reinforcement fibers and being conveyed to the forming tool (6) in a continuous process is provided. The forming tool (6) comprises at least one pressure bag (8, 8a to 8e) configured to be pressurized during a forming step of the semi-finished product (2), during which the semi-finished product (2) is sandwiched between a forming surface of a forming element (4) and the at least one pressurized pressure bag (8, 8a to 8e), such that the semi-finished product (2) substantially takes on the shape of the forming surface. Further, a forming apparatus and a forming method for forming a semi-finished product (2) comprising reinforcement fibers are provided.
摘要:
A system is provided for collecting data during vacuum molding of a composite part using a mold including an air tight, flexible membrane (26) sealed to a tool (24). The system comprises a plurality of MEMS sensors (30) coupled with the interior of the mold at different locations over the part. Each of the sensors produces signals related to a process parameter, such as pressure within the bag, that is sensed at the location of the sensor.
摘要:
Provided are a method for producing a polymer material having a high degree of crystallization, a small variability in degree of crystallization, and a three-dimensionally isotropic crystallinity to thus give high thermal resistance, high isotropy of resin physical properties, and a small variability in resin physical properties; and the polymer material. The method for producing a polymer material includes the steps of: heating a thermoplastic resin to or above a melting point determined from a melting peak measured by DSC into a thermoplastic resin melt; applying a pressure higher than atmospheric pressure to the thermoplastic resin melt; starting cooling the thermoplastic resin melt with a pressure higher than atmospheric pressure applied thereto; releasing the pressure on the thermoplastic resin melt after cooling the thermoplastic resin melt to a cooling-end-temperature lower than an upper limit of a crystallization temperature range, wherein during the cooling, the pressure on the thermoplastic resin melt is maintained at the pressure higher than atmospheric pressure or raised. The polymer material is one obtained by the above production method.
摘要:
Disclosed is a method for producing a wafer lens, wherein misalignment between a glass substrate and a molding mold is suppressed from occurring. The method for producing a wafer lens comprises: a step wherein, in a first reduced pressure atmosphere, an energy-curable resin is arranged between a glass substrate (11) and a molding mold, and the glass substrate (11) is pressed against the molding mold, while sucking the glass substrate (11) and affixing the molding mold; a step wherein, in a second reduced pressure atmosphere that is under a higher pressure than the first reduced pressure atmosphere, the arrangement of the glass substrate (11) and the molding mold is adjusted while sucking the glass substrate (11) and affixing the molding mold; and a step wherein the energy-curable resin is cured by applying energy to the energy-curable resin, and the glass substrate (11) is released from the molding mold.
摘要:
Disclosed is a method for producing a wafer lens, wherein misalignment between a glass substrate and a molding mold is suppressed from occurring. The method for producing a wafer lens comprises: a step wherein, in a first reduced pressure atmosphere, an energy-curable resin is arranged between a glass substrate (11) and a molding mold, and the glass substrate (11) is pressed against the molding mold, while sucking the glass substrate (11) and affixing the molding mold; a step wherein, in a second reduced pressure atmosphere that is under a higher pressure than the first reduced pressure atmosphere, the arrangement of the glass substrate (11) and the molding mold is adjusted while sucking the glass substrate (11) and affixing the molding mold; and a step wherein the energy-curable resin is cured by applying energy to the energy-curable resin, and the glass substrate (11) is released from the molding mold.
摘要:
The present invention provides a precision press device and a press load control method thereof for downsizing a vacuum chamber in press work in the vacuum chamber, shortening a time required to reach a vacuum and further performing high accuracy pressure control. To downsize a chamber 16, a pressure sensor is set up outside the chamber 16 and a cylinder chamber 17 is formed to allow a tubular plunger 7 to slide up and down using the tubular shape of the chamber 16. A negative pressure 22 in the chamber 16 attracts the pressurized section 2 and the pressurizing section 1 to each other, but by injecting an equivalent pressure 19 of a fluid into the cylinder chamber 17, pushing out the tubular plunger 7, the attractive forces are canceled out. It is possible to control the load on the substrate or the like transferred by the press stage with high accuracy.
摘要:
An apparatus for molding an optical lens from a molten thermoplastic resin material using an injection molding machine, and including means for forming a mold cavity defined by a pair of opposed, spaced apart inserts shaped and configured to define opposite faces of said optical lens and having a plurality of overflow wells surrounding the mold cavity means for injecting a predetermined optimum volume of resin material into said mold cavity; means for controllably moving at least one insert relative to the other insert, wherein such relative insert motion is driven by a power cylinder capable of providing a variable compression stroke during molding and is initiated prior to completion of said injection; means for controlling the velocity and/or compressive force of the compression stroke of said power cylinder such that said compression is conducted at a first selected relatively high velocity, thus urging excess resin from said cavity into said overflow wells after which the compression force is varied to a secondary selected level; means for maintaining the secondary selected compressive force on said mold cavity ; and means for ejecting the lens.
摘要:
A system is provided for collecting data during vacuum molding of a composite part using a mold including an air tight, flexible membrane (26) sealed to a tool (24). The system comprises a plurality of MEMS sensors (30) coupled with the interior of the mold at different locations over the part. Each of the sensors produces signals related to a process parameter, such as pressure within the bag, that is sensed at the location of the sensor.