Mold fixing structure

Patent metadata

Field	Value
Publication number	US-10427200-B2
Application number	US-201715602229-A
Country	US
Kind code	B2
Filing date	May 23, 2017
Priority date	May 26, 2016
Publication date	Oct 1, 2019
Grant date	Oct 1, 2019

Abstract

The present invention provides a mold fixing structure capable of easily performing work in which a mold carried into a machine is fixed to a mold mounting surface of the machine, and work in which the mold fixed to the mold mounting surface is carried out to the outside of the machine.

First claim

What is claimed is:

1. A method of fixing a mold to a mold mounting surface, the method comprising:
sliding the mold onto a mold supporting body comprising:
a shaft protruding from the mold mounting surface;
a flange formed on the shaft; and
a bearing formed on the shaft on a side of the flange that is opposite the mold mounting surface and supporting the mold, the mold being slid onto the mold supporting body so as to insert the flange and bearing into a groove in the mold; and

reducing a distance by which the shaft protrudes from the mold mounting surface so that the flange forces a wall surface of the groove in a direction toward the mold mounting surface.

2. The method of claim 1 , wherein in the reducing of the distance, a first positioning portion formed in the mold mounting surface is fitted with a second positioning portion formed in a surface of the mold opposite the mold mounting surface, to fix the mold to the mold mounting surface.

3. The method of claim 2 , wherein the first positioning portion comprises one of a convex portion and a concave portion, and the second positioning portion comprises the other of the convex portion and the concave portion.

4. A mold fixing structure for a press machine, the mold fixing structure comprising:
a mold mounting surface;
a mold supporting body formed in the mold mounting surface and comprising:
a shaft protruding from the mold mounting surface;
a flange formed on the shaft; and
a bearing formed on a side of the flange at an end of the shaft;

a mold which is fixable to the mold mounting surface by inserting the mold supporting body into the mold, and moving the shaft to reduce a distance by which the shaft protrudes from the mold mounting surface.

5. The mold fixing structure of claim 4 , wherein the mold is releasable from the mold mounting surface by moving the shaft to increase a distance by which the shaft protrudes from the mold mounting surface.

6. The mold fixing structure of claim 4 , wherein a part of the mold is located above the bearing and at a lateral side of the flange on a side of the mold mounting surface, and
wherein the flange extends in a direction perpendicular to an axis of the shaft, and an outer diameter of the bearing is greater than an outer diameter of the flange.

7. The mold fixing structure of claim 4 , further comprising:
a first positioning portion formed in the mold mounting surface; and
a second positioning portion formed in a surface of the mold opposite the mold mounting surface, the second positioning portion engaging with the first positioning portion to fix the mold to the mold mounting surface and disengaging with the first positioning portion to release the mold from the mold mounting surface.

8. The mold fixing structure of claim 7 , wherein the first positioning portion comprises one of a convex portion and a concave portion, and the second positioning portion comprises the other of the convex portion and the concave portion.

9. The mold fixing structure of claim 7 , wherein the mold comprises a punch that is formed on a side of the mold opposite the mold mounting surface and aligned with the second positioning portion of the mold.

10. The mold fixing structure of claim 4 , wherein the mold comprises a groove including a first groove portion having a first width and a second groove portion having a second width less than the first width, and
wherein the mold supporting body is inserted into the mold by inserting the flange and the bearing into the first groove portion, and the bearing supports the mold inside the first groove portion.

11. The mold fixing structure of claim 10 , wherein a diameter of the flange is greater than a diameter of the second groove portion.

12. The mold fixing structure of claim 10 , wherein the bearing supports the mold by contacting an upper wall of the first groove portion so that the flange is separated from the upper wall.

13. The mold fixing structure of claim 10 , wherein the shaft comprises:
a first shaft portion having a first diameter and around which the bearing rotates; and
a second shaft portion having a second diameter greater than the first diameter, the second shaft portion being formed in second groove portion.

14. The mold fixing structure of claim 13 , wherein the bearing supports the mold so as to separate the second shaft portion from an upper wall of the second groove portion.

15. A mold fixing structure for fixing a mold having a punch or a die to a mold mounting surface of a press machine, the mold fixing structure comprising:
a plurality of mold supporting bodies disposed in a mold mounting surface, each of the mold supporting bodies comprising:
a shaft portion that is disposed to protrude perpendicularly from the mold mounting surface so as to be movable forward and backward;
a flange portion that is provided on a front end side of the shaft portion so as to extend in a direction perpendicular to an axis of the shaft portion;
a bearing portion that is provided further on the front end side of the shaft portion from the flange portion, the bearing portion being larger in outer diameter than the flange portion; and

a mold supported by the bearing portion of each of the mold supporting bodies in a layout in which a part of the mold is located above the bearing portion and at a lateral side of the flange portion on a side of the mold mounting surface, so that the mold is fixed to the mold mounting surface and released from being fixed thereto in accordance with forward and backward movement of the shaft portion.

16. The mold fixing structure according to claim 15 , wherein a groove portion having a T-shape in section and extending linearly is formed in a surface of the mold opposed to the mold mounting surface, so that the mold is supported in a state where a front end portion of one of the mold supporting bodies, including the flange portion and the bearing portion thereof, is fitted into the groove portion.

17. The mold fixing structure according to claim 16 , wherein a plurality of the groove portions are formed in parallel in the mold so that the mold is supported in a state where a plurality of front end portions of the mold supporting bodies are fitted into the groove portions respectively.

18. The mold fixing structure according to claim 15 , wherein a positioning convex portion or a positioning concave portion is provided in a surface of the mold opposed to the mold mounting surface, and a positioning concave portion or a positioning convex portion is provided in the mold mounting surface, so that the convex portion and the concave portion are fitted to each other, thereby positioning the mold when the mold approaches the mold mounting surface.

19. The mold fixing structure according to claim 16 , wherein a positioning convex portion or a positioning concave portion is provided in a surface of the mold opposed to the mold mounting surface, and a positioning concave portion or a positioning convex portion is provided in the mold mounting surface, so that the convex portion and the concave portion are fitted to each other, thereby positioning the mold when the mold approaches the mold mounting surface.

20. The mold fixing structure according to claim 17 , wherein a positioning convex portion or a positioning concave portion is provided in a surface of the mold opposed to the mold mounting surface, and a positioning concave portion or a positioning convex portion is provided in the mold mounting surface, so that the convex portion and the concave por

Assignees

• Daido Steel Co Ltd
• Sakamura Hot Art Co Ltd

Inventors

• Hayashi Hideaki
• Enomoto Daisuke
• Taniguchi Masahiro
• Enomoto Minoru

Classifications

• B21J9/022

  multi-stage forging presses (handling devices B21K27/00) · CPC title

• B21J13/03 Primary

  Die mountings · CPC title

• B21D37/10 Primary

  Die sets; Pillar guides · CPC title

• B21D37/04 Primary

  Movable or exchangeable mountings for tools · CPC title

• B21J13/085

  handling of tools · CPC title