Molding die and die-exchanging method

Patent metadata

Field	Value
Publication number	US-10207441-B2
Application number	US-201515512250-A
Country	US
Kind code	B2
Filing date	Nov 12, 2015
Priority date	Nov 13, 2014
Publication date	Feb 19, 2019
Grant date	Feb 19, 2019

Abstract

A molding die has a lower holder, an intermediate holder, an upper holder, a lock member, an upper link bar, a lower link bar, a restriction member, and a drive part. A movement of the lock member in a molding die opening direction or a molding die closing direction is restricted by the intermediate holder. The upper link bar has a first retaining groove in which the lock member fits when being located at a molding die closing position. The lower link bar has a second retaining groove in which the lock member fits and a release portion that enables the lock member to be released from the first retaining groove. The restriction member is movable between a restriction position that prevents the lock member from fitting in the second retaining groove and a free position that enables the lock member to fit in the second retaining groove.

First claim

What is claimed is:

1. A molding die comprising:
a lower holder, an intermediate holder, and an upper holder that are stacked and configure a common case of the molding die;
a lower template, an intermediate template, and an upper template that are disposed in the lower holder, the intermediate holder, and the upper holder, respectively, to be replaceable;
a lock member, a movement of which in a molding die opening direction or a molding die closing direction is restricted by the intermediate holder, the lock member being supported to be movable in a mold dividing surface direction;
an upper link bar
that is attached to the upper holder to protrude from the upper holder toward the intermediate holder,
that has a first retaining groove, the lock member fitting in the first retaining groove when being located at a molding die closing position, and
that fixes the intermediate holder and the upper holder to each other when the lock member fits in the first retaining groove;

a lower link bar
that is attached to the lower holder to protrude from the lower holder toward the intermediate holder on a side opposite to the upper link bar with respect to the lock member,
that has a second retaining groove in which the lock member fits and a release portion that enables the lock member to be released from the first retaining groove when the lock member is located in the release portion,
that fixes the lower holder and the intermediate holder to be a specified first distance away from each other when the lock member fits in the second retaining groove, and
that releases the upper holder and the intermediate holder from being fixed to each other when the lock member is located at the release portion;

a restriction member being movable between a restriction position that prevents the lock member from fitting in the second retaining groove and a free position that enables the lock member to fit in the second retaining groove; and
a drive part that sets a position of the restriction member at the restriction position or the free position.

2. The molding die according to claim 1 , wherein
the restriction member presses the lock member against the upper link bar from a side adjacent to the lower link bar when being located at the restriction position.

3. The molding die according to claim 1 , wherein
the drive part is operated using an air pressure, a hydraulic pressure, an electric motor power, an engine power, or a magnetic force.

4. A die-exchanging method for the molding die according to claim 1 , the die-exchanging method that exchanges more than one template of the lower template, the intermediate template, and the upper template, the die-exchanging method comprising:
lifting the intermediate holder and the upper holder, on a condition of being fixed to each other, integrally from the molding die closing position while the lock member fits in the first retaining groove;
fixing the lower holder and the intermediate holder to be the first distance away from each other in a manner that the restriction member is located at the restriction position and that the lock member is released from the first retaining groove and fits in the second retaining groove by lifting the intermediate holder in the molding die opening direction;
moving the upper holder in the molding die opening direction such that the intermediate holder and the upper holder are a specified second distance away from each other; and
exchanging the more than one template simultaneously using an exchanging jig that has support portions capable of supporting the more than one template simultaneously.

Assignees

• Denso Corp

Inventors

• Kawamura Atsushi
• Ichikawa Masato
• Gotoh Masami
• Arai Tsuyoshi

Classifications

• B29C45/84

  Safety devices {(B29C45/7626 takes precedence)} · CPC title

• B29C2045/4021

  Adjustable ejector pins · CPC title

• B30B11/007

  using a plurality of pressing members working in different directions · CPC title

• B29C45/2673

  with exchangeable mould parts, e.g. cassette moulds (B29C45/1756 takes precedence) · CPC title

• B29C2045/6735

  Rotatable means coaxial with the coupling rod for locking the coupling rod to the mould platen · CPC title