Device for forcibly inserting drop into compression molding machine, and molding die follow-up type device for supplying drop

Patent metadata

Field	Value
Publication number	US-9409316-B2
Application number	US-201313766245-A
Country	US
Kind code	B2
Filing date	Feb 13, 2013
Priority date	Jul 14, 2003
Publication date	Aug 9, 2016
Grant date	Aug 9, 2016

Abstract

A method and device for continuously supplying molten synthetic resin drops into female moldings which are rotatingly movable for manufacturing moldings, wherein synthetic resin in molten condition extruded from an extrusion opening is cut by a cutter attached to a holding mechanism to form the molten resin into drops in a determined quantity, the drops are held and conveyed by the holding mechanism, and the drops are forcibly inserted and supplied into the concaves of the female moldings. At that time the holding mechanism on the rotary- and movable type drop supply is made to approach the rotating molding die and the rotation path of the holding mechanism is made to overlap with that of the molding die within a determined area to make the movement of the holding mechanisms follow that of the molding die.

First claim

What is claimed is:

1. A device for forcibly inserting a drop of a molding material into a concave of a molding female die in a compression molding machine, which comprises:
a resin extruder to form a synthetic resin molding material into soften and molten condition by heating plasticization, the resin extruder comprising an extrusion opening formed at the edge of an extrusion die head attached to the resin extruder,
a holder disposed at a synthetic resin accepting position opposing to the extrusion die head, for holding the synthetic resin molding material extruded from the extrusion opening,
a cutter for cutting the synthetic resin into a determined quantity of the drop, and
a conveyer to transport the drop into a discharging position provided on the molding female die, the conveyer comprising a forcible releaser to forcibly release the drop into the concave of the molding female die.

2. The device for forcibly inserting a drop into a concave of a female mold according to claim 1 , wherein forcible releaser comprises a lift block for lowering the holder.

3. The device for forcibly inserting a drop into a concave of a female mold according to claim 1 , wherein forcible releaser comprises oscillator to oscillate the holder.

4. The device for forcibly inserting a drop into a concave of a female mold according to claim 1 , wherein the conveyer forcible releaser shifts a path of the holder in order to assist the drop of the drops.

5. A device for continuously supplying a drop of a molding material into a moving molding die in a compression molding machine which is a device for supplying a drop in molding die follow-up manner, comprising:
a molding die rotating along a first rotation path; and
a holder rotating on a second rotation path abutting the first rotation path in a plan view to approach the rotating molding die,
wherein one of the first rotation path and the second rotation path is configured to mechanically conform to the other of the first rotation path and the second rotation path so as to form a following area extending before and after a release point, and
the drop is held and conveyed by the holder and released at the release point, to insert and supply the drop into a concave of the molding female die.

Assignees

• Toyo Seikan Kaisha Ltd
• Toyo Seikan Group Holdings Ltd

Inventors

• Nemoto Satoru
• Takano Shoichiro
• Hashimoto Hiroyuki

Classifications

• B30B11/12

  co-operating with moulds on the circumference of a rotating drum · CPC title

• B29C2043/3288

  using cam drives · CPC title

• B29B11/02 Primary

  by dividing preformed material, e.g. sheets, rods · CPC title

• B29C31/048 Primary

  the material being severed at the dispensing head exit, e.g. as ring, drop or gob, and transported immediately into the mould, e.g. by gravity · CPC title

• B29B11/12

  Compression moulding · CPC title