EXTRUSION MOLDING DEVICE

PROBLEM TO BE SOLVED: To provide an extrusion molding device having a gear pump provided with oblique tooth gears and capable of the stable feeding of a molding material to a nozzle part.SOLUTION: Provided is an extrusion molding device 1 mainly comprising: a barrel 10; an extrusion screw 20; a nozzle part 30 for forming a honeycomb molded body in which the average molded body temperature is regulated to 32°C or higher; and a gear pump 40. The gear pump 40 includes: a pair of oblique tooth gears 42a, 42b having a plurality of oblique teeth; and a gear enclosure part 46 having a gear space part 43 capable of including the pair of oblique tooth gears 42a, 42b and capable of storing them, an introduction space part 44 for introducing a molding material 2 into the gear space part 43, and a feed space part 45 for feeding the molding material 2 from the gear space part 43 to the nozzle part 30. The feed space part 45 is extended from the outlet port of the gear space part 43 and has a cylindrical tube part 50 with a tube diameter of 24 mm or lower.SELECTED DRAWING: Figure 1 【課題】斜歯ギアを備えるギアポンプを有し、成形材料の口金部への安定供給を可能とする押出成形装置の提供を課題とする。【解決手段】押出成形装置１は、バレル１０と、押出スクリュー２０と、平均の成形体温度が３２℃以上に調整されたハニカム成形体を形成する口金部３０と、ギアポンプ４０とを主に具備し、ギアポンプ４０は、複数の斜歯を有する一対の斜歯ギア４２ａ，４２ｂと、一対の斜歯ギア４２ａ，４２ｂを内包し、収容可能なギア空間部４３、成形材料２をギア空間部４３まで導く導入空間部４４、及び、ギア空間部４３から成形材料２を口金部３０まで供給する供給空間部４５を有するギア筐体部４６とを備え、供給空間部４５は、ギア空間部４３の導出口から延設され、管径が２４ｍｍ以下の円筒状の円筒管部５０を有する。【選択図】図１