Claims
- 1. A method of press-molding a plasticized resin extruded from a resin extruding machine and charged into a mold cavity of a mold of a press-molding machine comprising the steps of:
- storing an amount of plasticized resin extruded from the extruding machine which exceeds that required for one molding operation;
- supplying a stored resin under a constant supply pressure;
- measuring an amount of the stored resin required for one molding operation by controlling the rotational speed of a rotary volumetric flow meter means to thereby regulate the resin flow rate;
- charging the thus measured amount of plasticized resin into the mold cavity; and
- clamping the mold to effect a press-molding operation.
- 2. The press-molding method according to claim 1 wherein the plasticized resin is stored in an accumulator.
- 3. The press-molding method according to claim 1 wherein the plasticized resin is supplied by a pneumatic piston-cylinder assembly.
- 4. The press-molding method according to claim 1 wherein the rotary volumetric flow meter means comprises a gear pump.
- 5. The press-molding method according to claim 1 wherein a controller is employed to control the displacement and operation of said volumetric flow meter means.
- 6. The press-molding method according to claim 2 wherein the plasticized resin is supplied from said accumulator by a pneumatic piston-cylinder assembly located in said accumulator in combination with a gear pump.
- 7. The press-molding method according to claim 2 wherein plasticized resin is extruded into said accumulator while the mold is being clamped.
- 8. The press-molding method according to claim 4 wherein said gear pump is controlled by a microcomputer.
Priority Claims (1)
Number |
Date |
Country |
Kind |
62-113825 |
May 1987 |
JPX |
|
Parent Case Info
This application is a divisional of application Ser. No. 192,348, filed May 10, 1988, now U.S. Pat. No. 4,925,381.
US Referenced Citations (14)
Foreign Referenced Citations (7)
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Date |
Country |
3416899 |
Nov 1985 |
DEX |
2583333 |
Dec 1986 |
FRX |
57-53327 |
Mar 1982 |
JPX |
57-66915 |
Apr 1982 |
JPX |
59-164124 |
Sep 1984 |
JPX |
61-181618 |
Aug 1986 |
JPX |
62-4435 |
Jan 1987 |
JPX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
192348 |
May 1988 |
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