| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem that the bridge phenomenon of a material is generated in a material supply passage when a granular material is fed. under pressure to make it impossible to stably supply the material. SOLUTION: The material supply device is equipped with the heating cylinder 16 connected to the lower end of a material supply block 13 having the material supply passage 17 communicating with a hopper 11 formed thereto and having a material pressure feed passage 18 formed thereto, a push-in rod 20 fitted in the push-in passage 19, which is formed so as to straddle the heating cylinder 16 and the material supply block 13 to communicate with the material pressure feed passage 18 and the lower end of the material supply passage 17 in a state inclined with respect to these passages 17 and 18, in a freely slidable manner and reciprocally moving between a retreat position allowing the material supply passage 17 to communicate with the push-in passage 19 and a push-in position cutting off the material supply passage 17 and the injection plunger 15 fitted in the material pressure feed passage 18 in a freely slidable manner and reciprocally moving between the retreat position allowing the push-in passage 19 to communicate with the material pressure feed passage 18 and a pressure feed position cutting off the push-in passage 19.
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