DE7610711U1 - DEVICE FOR PROCESSING FIBER REINFORCED PLASTICS AND / OR ELASTOMERS INTO MOLDED PIECES - Google Patents

Description

Device for processing fiber-reinforced plastics and / or elastomers into molded pieces

The invention relates to a device for processing fiber-reinforced plastics and / or elastomers

j fittings.

When processing the named material in

known machines, especially when fiberglass is used, a large part of the fibers destroyed on the way to the tool. Another disadvantage of such machines is that the input and Removal of the individual units is complicated, difficult and slow to carry out.

The object of the present invention is now to provide a device which a allows optimal protection of the fibers used, with maintenance work and cleaning of the units are to be carried out quickly and crosslinking of the material not yet in the mold is avoided

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Anton Hartdegen .r. ² - .. .. ... G .76 ίο 711.4 1 *

Patent engineer .''..'... I I ',. "..'I" \ /

8031 Geisenbrunn

Aneerfeldstr. 12, IaI. Q8105 / 81.27

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and a very precise dosage is made possible.

This object is achieved according to the invention by a device which is characterized in that the extruder screw and injection and dosing unit in the

Press frames aligned opposite one another on the channel
are ordered and that the material for guiding the material from the injection and dosing unit to the tool has a maximum deflection of 2x 45 °. This ensures that the fibers experience extreme protection, since the arrangement of the units enables precise temperature control and the supply line for the material is either straight or curved. By dividing the tasks between two units in a mutually opposite arrangement, greater performance is also ensured, because precise control of temperature, injection pressure, speed and metering of the molding material is possible. Greater performance is also made possible by the fact that the material can be drawn in and preheated during the pressing process.

An advantageous further development of the device according to the invention is that the entire preheating and injection unit and the lower mold half on the press table with easily detachable machine elements are attached to allow quick and easy release. A preferred embodiment exists further in that a fastening device on the press ram

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for the optional detaching and attaching of the preheating and injection unit and the lower mold half is. In the event of malfunctions, the entire preheating and injection unit with the lower mold half can be removed from the table loosened, attached to the press ram and lifted up. This enables maintenance work on both units as well as the canals can be carried out extremely quickly and conveniently.

For sprueless spraying, a further development is that a second injection piston with a higher Pressure is applied vertically in the tool, the end face of which forms part of the tool.

An embodiment of the invention is shown in the drawing and will be described in more detail below explained.

In the drawing shows:

1 shows the device according to the invention in elevation, FIG. 2 shows a partial section A-B according to FIG. 3 and 3 shows the device according to FIG. 1 in section and on a larger scale.

The device shown in the drawing (Fig. 1, 2 and 3) is for producing a molded part 13 from fiber-reinforced and / or elastomers or determined from rubber compounds. The preferably strip-shaped Material is drawn into the extruder screw 2 via the feed hopper 1 and

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line channel 3 promoted in the injection and metering cylinder. In this process is the feed channel 7 closed to the mold 1o by the high-pressure injection piston 9. Now the feed channel 3 to the extruder screw 2 is closed with the gate valve 4 and the feed channel 7 to the high pressure injection cylinder 8 and thus released to the tool 1o.

With the injection and metering piston 6, the precisely tempered material is fed via the feed channel 7 injected into the tool 1o. The remaining mass is now with the high pressure injection piston 9 when shut off of the feed channel 7 pressed from the high-pressure injection cylinder 8 into the tool 1o, wherein the end face of the high pressure injection piston is part of the tool. The gate valve 4 is now reopened and during the pressing process the cycle begins with the drawing-in of the material strips 14 from the front.

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Claims (5)

Anton Hartdegen ·· .. ·. ... G 76 ίο 711.4 Patent engineer '·' ·; ·: ·: / 80s31Gelsenbrufin "'Anaoiloldotr. 12, Tel. 03105/8127 protection claims 1. Device for processing fiber-reinforced Plastics and / or elastomers to form molded pieces, characterized in that that the extruder screw (2) and the injection and dosing unit (5) in the press frame are arranged in alignment opposite one another and that the channel (7) for the material guide a maximum deflection from the injection and dosing unit (5) to the tool (io) of 2x 45 °. 2. Device for processing fiber-reinforced plastics and / or alastomers into molded pieces in particular according to claim 1, characterized in that the whole Preheating and injection unit (2 and 5) and the under mold half (io) on the table (12) are attached with easily detachable machine elements. 3. Device according to claim 1 and 2, characterized in that that on the press ram (11) a fastening device for the optional hanging and hanging of the preheating 7610711 12/23/76 and injection unit (2 and 5) and the 'lower tool Fox'mhälften (io) attached is. 4. Device according to claims 1 to 3, ' characterized, that a second injection piston (9) is mounted vertically in the tool (1o), the end face of which forms part of the tool (io) / ¹ ; 5. Device according to claims 1 to 4, characterized in that that in the supply channel (3) between the extruder screw (2) and the spray and dosing unit (5) a gate valve (4) is arranged. 7610711 12/23/78