JP2006218827A - Cold press molding apparatus for fiber laminate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cold press molding apparatus for molding fiber laminates for automobiles, such as sound insulating materials for automobiles, floor mats and insulator dashes, into required shapes, which shortens the time required for the molding and cooling and improves productivity. <P>SOLUTION: The mold fitting faces of the platens 1a, 1b to which the gas permeable molds 2a, 2b for molding the fiber laminate 15 are fitted have charging ports 4a-4f and discharging ports 5a-5d, and a cooling air is supplied to or exhausted from the gas permeable molds through the charging ports and the discharging ports. Further, the mold fitting faces of the platens 1a, 1b have the charging ports 4a-4f and the discharging ports 5a-5d adjacent to each other, and the surfaces of the gas permeable molds 2a, 2b have many small holes 13a-13f which are communicant with the charging ports and many small holes 14a-14d which are communicant with the discharging ports. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cold press molding apparatus for molding a fiber laminate for automobiles such as a soundproof material for automobiles, a floor mat, and an insulator dash into a required shape.

For example, an insulator dash composed of a fiber laminate having high soundproofing and sound insulation properties, as shown in Patent Document 1 below, heats the fiber laminate containing a binder resin that melts at a low melting point in an oven. The binder resin is melted, sandwiched between air-permeable molds, cooled air is blown, and cold pressing is performed to form a desired shape.
Moreover, the following patent document 2 shows the technique which shape | molds the floor carpet for motor vehicles consisting of the same fiber laminated body into a required shape by spraying cold air and cold-pressing.
JP-A-7-16917 Japanese Patent Laid-Open No. 6-199168

By the way, in the conventional apparatus used for the cold press molding described above, it takes time and effort to provide piping for sending cooling air to the mold, and the diameter of the piping is limited by the height of the die, so that the large diameter piping In addition, there is a problem that a sufficient amount of cooling air cannot be supplied because it is necessary to bend or branch the pipe. For this reason, the fiber laminate could not be cooled in a short time while being sandwiched between the molds. For example, when a fiber laminate having a basis weight of 2000 g / m ² , a width of 700 mm and a length of 1300 mm is heated to 180 ° C. and molded by a conventional cold press apparatus, a molding time of 40 seconds is required. In order to prevent return, it was necessary to forcibly cool the fiber laminate by taking cold air for about 20 seconds after taking it out from between the molds. For this reason, there is a problem that the cycle time becomes long and the productivity is poor.
This invention solves such a subject and provides the cold press apparatus for fiber laminated body shaping | molding which can improve productivity.

  In order to solve the above-mentioned problems, the fiber laminate cold press forming apparatus according to claim 1 is configured to form a supply outlet and a discharge outlet on a die mounting surface of a surface plate to which a breathable mold for forming a fiber laminate is attached. The cooling air is supplied to and discharged from the air-permeable mold through the supply port and the discharge port.

  The invention according to claim 2 is the above-mentioned fiber laminate cold press molding apparatus, wherein the feed outlet and the outlet are formed adjacent to each other on the mold mounting surface of the surface plate, and the surface of the breathable mold is A large number of small holes communicating with the supply outlet and a large number of small holes communicating with the discharge port are formed.

  The invention according to claim 3 is characterized in that, in the fiber laminate cold press molding apparatus, a sealing member for maintaining adhesion to a gas-permeable mold is provided at a supply outlet and an outlet.

  The invention according to claim 4 is characterized in that, in the fiber laminate cold press forming apparatus, a damper for adjusting a flow rate of cooling air is provided at a supply outlet or an outlet.

In the first and second aspects of the invention, a large-diameter supply / discharge port and its piping can be provided without being restricted by the height of the mold, so that a sufficient cooling air flow rate is ensured. As a result, the time required for molding cooling is shortened and productivity is improved.
In the invention described in claim 3, air leakage can be prevented only by attaching a mold to the surface plate.
In the invention described in claim 4, a large amount of cooling air can be supplied to a portion that particularly requires cooling.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing an outline of a press molding apparatus according to the present invention. In the figure, 1a is a lower surface plate, 1b is an upper surface plate, 2a is an air permeable mold fixed to the lower surface plate 1a with bolts 3 and 2b is an air permeable mold fixed to the upper surface plate 1b with bolts 3. . Since the lower surface plate 1a and the upper surface plate 1b have the same configuration, FIG. 2 is a longitudinal sectional view of the lower surface plate 1a and the air-permeable mold 2a, and FIG. That is, in this press molding apparatus, the supply ports 4a to 4f and the discharge ports 5a to 5d are formed adjacent to each other on the mold mounting surface of the surface plate 1a, and the supply ports 4a to 4f are formed transversely in the surface plate 1a. In addition to communicating with the air supply path 6, the discharge ports 5 a to 5 f communicate with an exhaust path 7 formed in a transverse shape in the surface plate 1 a. 8 is an electromagnetic valve provided at the inlet of the air supply path 6, and the air supply path 6 is connected to a cooling air source via the electromagnetic valve. Reference numeral 9 denotes an electromagnetic valve provided at the outlet of the exhaust passage 7, and the exhaust passage 7 is connected to an exhaust blower via the electromagnetic valve.

  Further, 10 is a flow rate adjusting damper provided in the middle of the air supply path 6 connected to the supply outlet 4a, and 11 is a flow rate adjusting damper provided in the middle of the exhaust path 7 connected to the discharge port 5a. Further, a groove is formed in a partition shape on the mold mounting surface of the surface plate 1a around each of the supply outlets 4a to 4f and the discharge outlets 5a to 5d, and a seal member 12 made of an elastic material such as rubber is formed in the groove. The seal member is provided in close contact with the lower surface of the air-permeable mold 2a so that air does not leak.

  Further, the surface of the air-permeable mold 2a is shaped according to the required molding shape of the fiber laminate as shown in FIG. 4, and has a large number of small holes 13a to 13f communicating with the supply ports 4a to 4f and the discharge ports. A large number of small holes 14a to 14d communicating with 5a to 5d are formed.

In the cold press forming apparatus configured as described above, the upper surface plate 1b is lowered to sandwich the fiber laminate 15 between the air-permeable molds 2a and 2b as shown in FIG. 6, the cooling air supplied from the respective supply outlets 4a to 4f is caused to flow into the gas-permeable molds 2a and 2b, and the cooling air is discharged into the fiber laminate 15 through a plurality of small holes 13a to 13f. The laminated body is cooled, and the exhaust blower is operated to depressurize the exhaust passage 7, thereby sucking the cooling air from the adjacent small holes 14a to 14d to the discharge ports 5a to 5d. Therefore, a large amount of cooling air flows through the fiber laminate 15 and the fiber laminate is cooled in a short time. By the way, when the diameter of the air supply path 6 and the exhaust path 7 is 120 mm and the air volume is set to 30 m ³ / min, a fiber laminate having a basis weight of 2000 g / m ² heated to 180 ° C., a width of 700 mm, and a length of 1300 mm is obtained. Mold cooling was possible in 40 seconds.

  Further, by adjusting the flow rate adjusting dampers 10 and 11, a large amount of cooling air can flow through the thick portion of the fiber laminate 15 and the cooling of the portion that is difficult to cool can be promoted. For this reason, the air volume can be set in accordance with the shape of the fiber laminate 15.

The front view which shows the outline of the press molding apparatus which concerns on this invention. The longitudinal cross-sectional view of the lower surface plate and metal mold | die of the cold press molding apparatus which concerns on this invention. FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. The perspective view of the metal mold | die of the cold press molding apparatus which concerns on this invention. The longitudinal cross-sectional view of the principal part which showed the operating state of the press molding apparatus which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a, 1b Surface plate 2a, 2b Breathable metal mold 4a-4f Supply outlet 5a-5d Discharge port 6 Air supply path 7 Exhaust path 10,11 Flow control damper 12 Seal member 13a-13f Small hole 14a-14d Small hole 15 Fiber laminate

Claims (4)

  Forming a feed outlet and a discharge port on a mold mounting surface of a surface plate to which a breathable mold for forming a fiber laminate is mounted, and supplying and discharging cooling air to the breathable mold through the feed outlet and the discharge port. The featured fiber laminate cold press forming device.   Form the surface of the surface plate with the supply and discharge ports next to each other, and form the surface of the breathable mold with many small holes communicating with the supply and discharge ports and many small holes communicating with the discharge ports. The fiber laminate cold press molding apparatus according to claim 1, wherein   The fiber laminate cold press molding apparatus according to claim 1 or 2, wherein a sealing member for maintaining adhesion to the air-permeable mold is provided at the supply outlet and the discharge outlet.   The fiber laminate cold press molding apparatus according to any one of claims 1 to 3, wherein a damper for adjusting a flow rate of cooling air is provided at a supply outlet or an outlet.

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