Injection molding machine, injection molding system, and method of manufacturing resin molded product

Patent metadata

Field	Value
Publication number	US-12049033-B2
Application number	US-202217752619-A
Country	US
Kind code	B2
Filing date	May 24, 2022
Priority date	May 28, 2021
Publication date	Jul 30, 2024
Grant date	Jul 30, 2024

Abstract

In an injection molding machine including a first nozzle and a second nozzle that injects resin into a mold from the first nozzle through the second nozzle, a distance between the second nozzle and the mold is changed with movement of at least the second nozzle in a first direction, and the second nozzle is displaceable in a second direction in a state in which the mold is fixedly secured relative to the first nozzle and the second nozzle is in contact with the first nozzle.

First claim

What is claimed is:

1. An injection molding machine comprising:
a first nozzle; and
a second nozzle;
wherein resin is injected into a mold from the first nozzle through the second nozzle,
wherein a distance between the second nozzle and the mold is changed with movement of at least the second nozzle in a first direction, and
wherein the second nozzle is displaceable in a second direction intersecting the first direction in a state in which the mold is fixedly secured relative to the first nozzle and the second nozzle is in contact with the first nozzle.

2. The injection molding machine according to claim 1 , wherein the second nozzle includes a heater arranged to heat the resin in a resin flow path in the second nozzle.

3. The injection molding machine according to claim 2 , wherein the second nozzle includes a valve pin arranged to open and close the resin flow path in the second nozzle.

4. The injection molding machine according to claim 1 , wherein the first nozzle does not include a valve pin arranged to open and close a resin flow path in the first nozzle.

5. The injection molding machine according to claim 1 , wherein an end portion of the second nozzle on a side closer to the mold is fitted to a recess formed in the mold.

6. The injection molding machine according to claim 5 , wherein the first end portion has an inclined surface that is inclined relative to the first direction, and wherein a side surface of the recess in the mold is an inclined surface that is inclined relative to the first direction.

7. The injection molding machine according to claim 5 , wherein the first end portion has a flat surface along the second direction, and a bottom surface of the recess in the mold is a flat surface along the second direction.

8. The injection molding machine according to claim 1 , wherein an end portion of the second nozzle on a side closer to the first nozzle includes a recess in contact with the first nozzle.

9. The injection molding machine according to claim 8 , wherein the recess in the end portion has a curved surface.

10. The injection molding machine according to claim 5 , wherein the second nozzle includes a valve pin arranged to open and close a resin flow path in the end portion.

11. The injection molding machine according to claim 1 , further comprising a holder arranged to secure the second nozzle,
wherein the second nozzle includes a protruding portion arranged to protrude in the second direction,
wherein the holder includes a first portion and a second portion that are arranged side by side in the first direction, the protruding portion positioned between the first portion and the second portion in the first direction, and
wherein when the second nozzle is displaced, the protruding portion is moved in the second direction between the first portion and the second portion.

12. The injection molding machine according to claim 11 , wherein the holder includes a third portion arranged to face the protruding portion with a gap formed therebetween in the second direction, and wherein a size of the gap between the protruding portion and the third portion is changed when the second nozzle is displaced.

13. The injection molding machine according to claim 12 , wherein the first portion and the third portion belong to a first component of the injection molding machine, and wherein the second portion belongs to a second component of the injection molding machine different from the first component.

14. The injection molding machine according to claim 13 , wherein the holder includes a third component of the injection molding machine fixedly secured relative to the first nozzle and a spring component, and wherein the first component is connected to the third component with the spring component interposed therebetween.

15. The injection molding machine according to claim 14 , wherein the holder includes a fixing component penetrating through the second component and the first component and fitted to the third component.

16. The injection molding machine according to claim 11 , further comprising a fixed member arranged to fixedly secure the first nozzle,
wherein the holder is fixed to the fixed member.

17. The injection molding machine according to claim 16 , further comprising an abutment member arranged to abut the mold,
wherein the abutment member is fixed to the fixed member,
wherein the abutment member forms an opening, and
wherein the second nozzle is moved through the opening in the first direction.

18. An injection molding system comprising:
an injection molding machine comprising:
a first nozzle, and
a second nozzle,
wherein resin is injected into a mold from the first nozzle through the second nozzle,
wherein a distance between the second nozzle and the mold is changed with movement of at least the second nozzle in a first direction, and
wherein the second nozzle is displaceable in a second direction intersecting the first direction in a state in which the mold is fixedly secured relative to the first nozzle and the second nozzle is in contact with the first nozzle;
a first carrying apparatus configured to, on condition of the mold being a first mold, carry the first mold in the second direction; and
a second carrying apparatus configured to carry a second mold different from the first mold in the second direction.

19. A method of manufacturing a resin molded product by injecting resin into a mold from a first nozzle through a second nozzle, the method comprising:
changing a distance between the second nozzle and the mold by moving at least the second nozzle in a first direction, and
displacing the second nozzle in a second direction intersecting the first direction in a state in which the mold is fixedly secured relative to the first nozzle and the second nozzle is in contact with the first nozzle.

20. The manufacturing method according to claim 19 , further comprising heating the resin in a resin flow path in the mold.

21. The manufacturing method according to claim 19 , further comprising:
opening and closing a resin flow path in the second nozzle by a first valve pin of the second nozzle;
opening and closing a resin flow path in the mold by a second valve pin of the mold;
injecting the resin into the mold in a first state in which the first valve pin and the second valve pin are apart from each other;
establishing, subsequent to the first state, a second state in which the first valve pin and the second valve pin are in contact with each other; and
increasing, subsequent to the second state, the distance between the second nozzle and the mold by moving the second nozzle in the first direction.

Assignees

• Canon Kk

Inventors

• Yokotani Kyosuke
• Ochiai Takamichi

Classifications

• B29C45/2806

  consisting of needle valve systems (B29C45/2896 takes precedence) · CPC title

• B29C2045/2796

  Axially movable nozzles or nozzle tips · CPC title

• B29C45/0408

  involving at least a linear movement (B29C45/0433 takes precedence) · CPC title

• B29C45/20 Primary

  Injection nozzles {(B29C45/1603 takes precedence)} · CPC title

• B29C2045/2889

  Sealing guide bushings therefor · CPC title