Nissei Plastic Industrial Co., Ltd.

Yuichi Sakurada

Toshimi Kato

Hozumi Yoda

Hirofumi Murata

Keita Arai

Keiichi Tozawa

Yoshihiko Takahashi

Takahiro Kouda

Nanae Naito

An injection device has a screw disposed in a heating cylinder so as to be rotatable and movable in an axial direction. An injection stage supports the heating cylinder. A material supplying unit supplies a resin material to the heating cylinder. A material introducing member is disposed between the material supplying unit and the heating cylinder and introduces the resin material from the material supplying unit to the heating cylinder, The material introducing member has a cylindrical portion fitted in a vertical hole provided in the injection stage, and a lower part of the cylindrical portion is in abutting contact with the heating cylinder. A heat medium passage extends inside a sidewall of the cylindrical portion for flowing therethrough a temperature-controlled heat medium, and a heat-insulating air space is formed between an outer circumferential surface of the cylindrical portion and a circumferential surface of the vertical hole.

Injection device

A heating cylinder cover for covering a heating cylinder includes a temperature control mechanism in which at least a plurality of heating units are provided on an outer circumferential surface of a heating cylinder body along an axial direction. The heating cylinder cover includes a heat-retaining cover part that is integrally provided with a cover body part and a plurality of partition parts. The cover body part is attached to the heating cylinder thereby forming a predetermined covered space between the cover body part and the temperature control mechanism and covers at least an upper half part of the heating cylinder. The partition parts project from an inner surface of this cover body part toward the temperature control mechanism and divides the covered space into a plurality of closed spaces.

Heating cylinder cover and heating cylinder device of injection molding machine

When a heating device is formed which includes at least one or more heatersandthat are provided on the outer circumferential surfacesandof at least one of a heating cylinderand an injection nozzleto heat at least one of the heating cylinderand the injection nozzle, at least some heaters, . . . of all the heaters, . . . are formed with air cooling-capable heatersandin which a panel memberformed of a material R having thermal conductivity is interposed between the heaters, . . . and the outer circumferential surfacesandof at least one of the heating cylinderand the injection nozzle, in which an air pathfor air cooling is formed in the panel memberand in which an air outlet and inlet portionallowing air A to be passed from an air supply portionis provided in the air path

Heating device of injection molding machine

An injection device has a heating cylinder, a nozzle adaptor attached to an end of the heating cylinder, a nozzle body attached to an end of the nozzle adaptor, a heater for heating the nozzle body, and a thermocouple for measuring a temperature of the nozzle body. The nozzle body has an outer peripheral surface and a key seat formed in the outer peripheral surface and extending in an axial direction of the nozzle body. The thermocouple includes a plate fitted in the key seat of the nozzle body.

Growing community of inventors

Nagano-ken, Japan

Yuichi Sakurada