Injection molding machine

Patent metadata

Field	Value
Publication number	US-10632530-B2
Application number	US-201715721748-A
Country	US
Kind code	B2
Filing date	Sep 30, 2017
Priority date	Oct 27, 2016
Publication date	Apr 28, 2020
Grant date	Apr 28, 2020

Abstract

There is provided an injection molding machine that includes a melting device in which a molding material melts to generate a molten material; an injection device from which the molten material supplied from the melting device is injected; and a connecting member including a communication path communicating with the melting device and the injection device. The melting device includes a material supply port to which the molding material is supplied, a partition plate that partitions the inside excluding at least both ends of the melting device and extends from the side of the material supply port to the side of the communication path, and a stirrer configured to stir the molten material in a manner of circulating around the partition plate.

First claim

What is claimed is:

1. An injection molding machine comprising:
a melting device in which a molding material melts to generate a molten material;
an injection device from which the molten material supplied from the melting device is injected; and
a connecting member including a communication path communicating with the melting device and the injection device,
wherein the melting device includes a material supply port to which the molding material is supplied, a horizontal cylinder that sends the molten material to the communication path and extends in a horizontal direction, a partition plate that partitions an inside of the horizontal cylinder excluding at least both ends of the horizontal cylinder and extends from a side of the material supply port to a side of the communication path in the horizontal direction, and a stirrer configured to stir the molten material in a manner of circulating around the partition plate,
wherein the stirrer includes an impeller that is provided in the horizontal cylinder and rotates.

2. The injection molding machine according to claim 1 ,
wherein the molding material is a light metal.

3. The injection molding machine according to claim 2 ,
wherein the molding material is a magnesium alloy or an aluminum alloy.

4. The injection molding machine according to claim 1 , further comprising
a torque meter configured to detect a rotational speed and a rotation torque of the stirrer.

5. The injection molding machine according to claim 1 ,
wherein the horizontal cylinder includes a gutter in which the molten material is stored, and a lid that is openably or removably provided on a top of the horizontal cylinder.

6. The injection molding machine according to claim 5 ,
wherein the gutter has an U-shaped vertical cross section.

7. The injection molding machine according to claim 5 , comprising
a heater provided in the gutter, and
an insulation portion made of an insulation material around the heater.

8. The injection molding machine according to claim 1 ,
wherein the stirrer includes a motor configured to drive the impeller, and
wherein the injection molding machine further includes a torque meter configured to detect a rotational speed and a rotation torque of the motor.

9. The injection molding machine according to claim 1 ,
wherein the melting device includes a vertical cylinder that has the material supply port, communicates with the horizontal cylinder, and extends in a vertical direction, and
a heater provided in the vertical cylinder.

10. The injection molding machine according to claim 9 ,
wherein the vertical cylinder has an U-shape vertical cross section.

11. The injection molding machine according to claim 9 ,
wherein the molding material is a billet or an ingot, and
wherein the injection molding machine further includes a material supply device configured to supply the molding material in a manner of being partially immersed in the molten material in the vertical cylinder.

12. The injection molding machine according to claim 1 , further comprising
an inert gas supply device configured to supply an inert gas with a predetermined concentration into the melting device and form an inert gas layer on a melting surface of the molten material.

13. The injection molding machine according to claim 12 , further comprising
an atmosphere meter configured to measure at least one of an inert gas concentration, an oxygen concentration and a nitrogen concentration of the inert gas layer,
wherein the inert gas supply device controls an amount of the inert gas supplied according to a measurement value of the atmosphere meter.

14. The injection molding machine according to claim 1 ,
wherein the molding material is a billet or an ingot, and
wherein the injection molding machine further includes a material supply device configured to supply the molding material in a manner of being partially immersed in the molten material.

15. The injection molding machine according to claim 14 ,
wherein the material supply device includes an arm holding the molding material, and a lifting device configured to raise and lower the arm.

16. The injection molding machine according to claim 14 ,
wherein the material supply device includes a hook supporting the molding material, and a lifting device configured to raise and lower the hook.

17. The injection molding machine according to claim 14 , further comprising
a liquid level indicator configured to measure a height of a melting surface of the molten material in the melting device,
wherein the material supply device supplies the molding material in a manner of the height of the melting surface being within a predetermined range.

18. The injection molding machine according to claim 14 ,
wherein the material supply device supplies the molding material in a manner of an amount of the molding material immersed in the molten material not exceeding 1 vol % of a total value of an internal capacity of the melting device, the communication path and the injection device.

Assignees

• Sodick Co Ltd

Inventors

• Fujikawa Misao

Classifications

• B22D17/30 Primary

  Accessories for supplying molten metal, e.g. in rations (supplying molten metal in ration in general B22D39/00) · CPC title

• B22D17/28

  Melting pots · CPC title

• B22D17/10

  with horizontal press motion · CPC title

• B29C45/18

  Feeding the material into the injection moulding apparatus {, i.e. feeding the non-plastified material into the injection unit} · CPC title

• B29C2045/583

  Mixing devices connected to drive means · CPC title