JP2022058125A5

JP2022058125A5 -

Info

Publication number: JP2022058125A5
Application number: JP2021074670A
Authority: JP
Filing date: 2021-04-27
Publication date: 2023-09-12
Anticipated expiration: 2040-09-30

Description

この目的を達成するために本発明に係る熱間プレス成型用金型は、熱間プレス成型用の金型材料によって形成された少なくとも一つの金型本体と、前記金型本体の表面に形成され、加熱された金属板材を成型する成型面と、前記金型本体の内部に形成され、冷媒が流れる冷媒通路と、前記金型材料より熱伝導率が高い材料によって中実の形状に形成され、前記金型本体に埋設された伝熱体とを備え、前記伝熱体は、前記成型面から前記冷媒通路に向かう熱伝達経路の一部を構成しているものである。
本発明は、熱間プレス成型用金型において、前記金型本体は、前記成型面に接続する側面または前後方向の端面を有し、前記伝熱体は、前記成型面の近傍であって前記冷媒通路と前記側面または前記前後方向の端面との間に設けられていてもよい。
本発明は、前記熱間プレス成型用金型において、前記伝熱体の一端は前記金型本体の外面に露出し、かつ前記伝熱体の他端は冷媒に接触していてもよい。 To achieve this object, the hot press molding mold according to the present invention includes at least one mold body formed of a hot press molding mold material, and a mold body formed on the surface of the mold body. , a molding surface for molding a heated metal plate material, a refrigerant passage formed inside the mold body through which a refrigerant flows, and a solid shape made of a material having higher thermal conductivity than the mold material; and a heat transfer body embedded in the mold body, the heat transfer body forming part of a heat transfer path from the molding surface to the refrigerant passage.
The present invention provides a mold for hot press molding, wherein the mold body has a side surface or an end surface in the front and back direction connected to the molding surface, and the heat transfer body is located near the molding surface and has a side surface connected to the molding surface. It may be provided between the refrigerant passage and the side surface or the end surface in the longitudinal direction.
In the hot press molding mold according to the present invention, one end of the heat transfer body may be exposed to an outer surface of the mold body, and the other end of the heat transfer body may be in contact with a coolant.

本発明は、前記熱間プレス成型用金型において、前記金型本体には、前記成型面から突出するように金型部品が取付けられ、前記冷媒通路は、前記金型部品の近傍を通って前記成型面に沿って延びるように形成され、前記伝熱体は、前記冷媒通路が延びる方向の一方と他方とから前記金型部品を挟むように配置されていてもよい。 In the hot press molding mold of the present invention, a mold component is attached to the mold body so as to protrude from the molding surface, and the refrigerant passage passes through the vicinity of the mold component. The heat transfer body may be formed to extend along the molding surface, and the heat transfer body may be arranged to sandwich the mold component from one direction and the other direction in which the coolant passage extends.

本発明は、前記熱間プレス成型用金型において、前記伝熱体は、銅材料によって形成されていてもよい。
本発明は、前記熱間プレス成型用金型において、前記金型本体は、外面に開口して前記成型面の近傍を前記成型面に沿って前記冷媒通路に向けて延びる孔を有し、前記伝熱体は、前記孔に圧入されていてもよい。
本発明は、前記熱間プレス成型用金型において、前記伝熱体は、一つの前記孔に個々に圧入された複数の柱状体によって構成されていてもよい。
本発明は、前記熱間プレス成型用金型において、前記伝熱体は、前記孔の開口側となる端面から伝熱体の内部に延びるねじ孔を有していてもよい。
本発明は、前記熱間プレス成型用金型において、前記金型本体は、外面に開口して前記成型面の近傍を前記成型面に沿って前記冷媒通路に向けて延びる孔を有し、前記孔には雌ねじが形成され、前記伝熱体は、前記雌ねじにねじ込まれていてもよい。 In the hot press molding die of the present invention, the heat transfer body may be formed of a copper material.
The present invention provides the hot press molding mold, wherein the mold body has a hole that opens on the outer surface and extends near the molding surface toward the refrigerant passage along the molding surface, and The heat transfer body may be press-fitted into the hole.
In the hot press mold according to the present invention, the heat transfer body may be constituted by a plurality of columnar bodies individually press-fitted into one of the holes.
In the hot press molding die of the present invention, the heat transfer body may have a threaded hole extending into the heat transfer body from an end surface that is an opening side of the hole.
The present invention provides the hot press molding mold, wherein the mold body has a hole that opens on the outer surface and extends near the molding surface toward the refrigerant passage along the molding surface, and A female thread may be formed in the hole, and the heat transfer body may be screwed into the female thread.

本発明に係る熱間プレス成型用金型の製造方法は、熱間プレス成型用の金型材料によって金型本体を形成するステップと、前記金型本体に成型面を形成するステップと、前記金型本体の内部に冷媒を流す冷媒通路を形成するステップと、前記金型材料より熱伝導率が高い材料によって形成された伝熱体を前記金型本体の内部に前記成型面から前記冷媒通路に向かう熱伝達通路の一部を構成するように埋設するステップとを有し、前記伝熱体を前記金型本体に埋設するステップは、前記金型本体の外面に開口して前記金型本体内を前記冷媒通路に向けて延びる孔を形成するステップと、前記孔に圧入可能となるように中実の形状に形成された前記伝熱体を前記外面の開口から前記孔に打ち込むステップとによって実施する方法である。
A method for manufacturing a hot press molding mold according to the present invention includes the steps of: forming a mold body using a mold material for hot press molding; forming a molding surface on the mold body; forming a refrigerant passage through which a refrigerant flows inside the mold body; and a step of forming a heat transfer body made of a material having a higher thermal conductivity than the mold material inside the mold body from the molding surface to the refrigerant passage. burying the heat transfer body in the mold body so as to form a part of a heat transfer passage toward the mold body; forming a hole extending toward the refrigerant passage; and driving the heat transfer body, which is formed into a solid shape so that it can be press-fitted into the hole, into the hole from an opening in the outer surface. This is the way to do it.

Claims

at least one mold body formed of a mold material for hot press molding;
a molding surface formed on the surface of the mold body and molding the heated metal plate material;
a refrigerant passage formed inside the mold body, through which a refrigerant flows;
a heat transfer body formed in a solid shape from a material having higher thermal conductivity than the mold material and embedded in the mold body;
A mold for hot press molding, wherein the heat transfer body constitutes a part of a heat transfer path from the molding surface to the coolant passage.

The hot press molding mold according to claim 1,
The mold body has a side surface or an end surface in the front-rear direction that connects to the molding surface,
The hot press molding die is characterized in that the heat transfer body is provided near the molding surface and between the refrigerant passage and the side surface or the end surface in the front-rear direction.

The hot press molding mold according to claim 1 or 2,
A mold for hot press molding, wherein one end of the heat transfer body is exposed on the outer surface of the mold body, and the other end of the heat transfer body is in contact with a coolant.

In the hot press molding mold according to any one of claims 1 to 3 ,
The mold body is configured such that a plurality of mold bodies can be connected to each other,
The refrigerant passages of the two mold bodies adjacent to each other pass through the inside of a passage forming member provided on the outer surface of these mold bodies so as to extend from one mold body to the other mold body. configured to extend from one mold body into the other mold body,
A mold for hot press molding, characterized in that the heat transfer body is provided in the connecting portion of the two mold bodies adjacent to each other and in the vicinity of the molding surface.

In the hot press molding mold according to any one of claims 1 to 4,
A mold component is attached to the mold body so as to protrude from the molding surface,
The refrigerant passage is formed to extend along the molding surface passing near the mold component,
A mold for hot press molding, wherein the heat transfer body is arranged to sandwich the mold component from one side and the other side in the direction in which the refrigerant passage extends.

In the hot press molding mold according to any one of claims 1 to 5 ,
A mold for hot press molding, wherein the heat transfer body is formed of a copper material.

In the hot press molding mold according to any one of claims 1 to 6,
The mold body has a hole that opens on the outer surface and extends near the molding surface toward the refrigerant passage,
A mold for hot press molding, wherein the heat transfer body is press-fitted into the hole.

The hot press molding mold according to claim 7,
A mold for hot press molding, wherein the heat transfer body is constituted by a plurality of columnar bodies individually press-fitted into one of the holes.

The hot press mold according to claim 7 or 8,
A mold for hot press molding, wherein the heat transfer body has a threaded hole extending into the inside of the heat transfer body from an end surface that is an opening side of the hole.

In the hot press molding mold according to any one of claims 1 to 6,
The mold body has a hole that is open to the outer surface and extends near the molding surface toward the refrigerant passage along the molding surface,
a female thread is formed in the hole;
A mold for hot press molding, wherein the heat transfer body is screwed into the female thread.

forming a mold body using a mold material for hot press molding;
forming a molding surface on the mold body;
forming a refrigerant passage through which a refrigerant flows inside the mold body;
burying a heat transfer body made of a material having higher thermal conductivity than the mold material inside the mold body so as to constitute a part of a heat transfer passage from the molding surface to the refrigerant passage; has
embedding the heat transfer body in the mold body,
forming a hole that opens on the outer surface of the mold body and extends within the mold body toward the coolant passage;
Manufacturing a mold for hot press molding, characterized in that the step of driving the heat transfer body, which is formed into a solid shape so that it can be press-fitted into the hole, into the hole from an opening in the outer surface. Method.

A method for manufacturing a hot press molding mold, which comprises molding by casting a hot press molding mold having a molding surface for molding a heated metal plate material and a refrigerant passage through which a refrigerant flows, the method comprising:
A heat transfer body made of a steel pipe whose interior is filled with a metal material having higher thermal conductivity than the mold material used for the casting is cast in a position that will become part of a heat transfer path from the molding surface to the refrigerant passage. A method of manufacturing a hot press molding die, characterized by embedding the die by embedding the die.

Laying a metal plate material for an automobile body part heated to a predetermined temperature on the hot press molding die according to claims 1 to 10 ;
A method for manufacturing an automobile body part, comprising the step of molding the metal plate material by a hot stamping method using the hot press molding die.