Release agent spraying device and forming apparatus

Patent metadata

Field	Value
Publication number	US-11633751-B2
Application number	US-202017006044-A
Country	US
Kind code	B2
Filing date	Aug 28, 2020
Priority date	Aug 30, 2019
Publication date	Apr 25, 2023
Grant date	Apr 25, 2023

Abstract

A release agent spraying device that sprays a release agent to a die of a forming apparatus main body, the release agent spraying device includes a motor, a moving nozzle that advances and retreats in a direction intersecting a moving direction of the die and jets the release agent from a tip, and a connection mechanism that connects the motor to the moving nozzle and advances and retreats the moving nozzle by a rotation output of the motor in one direction.

First claim

What is claimed is:

1. A release agent spraying device that sprays a release agent to a die of a forming apparatus main body, the release agent spraying device comprising:
a motor;
a moving nozzle that advances and retreats in a direction intersecting a moving direction of the die and jets the release agent from a tip; and
a crank mechanism that connects the motor to the moving nozzle and advances and retreats the moving nozzle by a rotation output of the motor in one direction,
wherein the crank mechanism includes
a gear that is connected to the motor,
a lever that advances and retreats the moving nozzle with oscillation, and
a connecting rod that comprises one end portion connected to an eccentric portion of the gear and the other end portion connected to the lever, and oscillates the lever with rotation of the gear,

wherein when the connecting rod is positioned at a vicinity of a top dead center, the moving nozzle is positioned at a startup stopping position and when the connecting rod is positioned at the top dead center, the moving nozzle is positioned at an advancement end in an advancing and retreating stroke, and
wherein the startup stopping position is a position where the release agent is sprayed, and is a position retreated by a predetermined distance from the advancement end in the advancing and retreating stroke.

2. The release agent spraying device according to claim 1 ,
wherein
when the connecting rod is positioned at a bottom dead center, the moving nozzle is positioned at a retreat end in the advancing and retreating stroke.

3. The release agent spraying device according to claim 1 , further comprising:
a controller that controls an operation of the motor and jetting of the release agent from the moving nozzle,
wherein the controller causes the release agent to be jetted from the tip of the moving nozzle while oscillating the moving nozzle back and forth about the startup stopping position.

4. A forming apparatus comprising:
a forming apparatus main body including a die and a slide that is fixed to the die and advances and retreats in a moving direction of the die;
a release agent spraying device including a motor, a moving nozzle that advances and retreats in a direction intersecting the moving direction of the die and jets a release agent from a tip to the die, and a crank mechanism that connects the motor to the moving nozzle and advances and retreats the moving nozzle by a rotation output of the motor in one direction; and
a controller that controls an operation of the motor and jetting of the release agent from the moving nozzle,
wherein the controller controls operations of the motor and the moving nozzle in synchronization with an operation of the slide,
wherein the crank mechanism includes
a gear that is connected to the motor,
a lever that advances and retreats the moving nozzle with oscillation, and
a connecting rod that comprises one end portion connected to an eccentric portion of the gear and the other end portion connected to the lever, and oscillates the lever with rotation of the gear,

wherein when the connecting rod is positioned at a vicinity of a top dead center, the moving nozzle is positioned at a startup stopping position and when the connecting rod is positioned at the top dead center, the moving nozzle is positioned at an advancement end in an advancing and retreating stroke, and
wherein the startup stopping position is a position where the release agent is sprayed, and is a position retreated by a predetermined distance from the advancement end in the advancing and retreating stroke.

Assignees

• Sumitomo Heavy Industries

Inventors

• Onishi Takeharu

Classifications

• B21J13/02

  Dies or mountings therefor · CPC title

• B29C33/58

  Applying the releasing agents · CPC title

• B21J3/00 Primary

  Lubricating during forging or pressing (lubricating in general F16N) · CPC title

• B21D37/18 Primary

  Lubricating {, e.g. lubricating tool and workpiece simultaneously (lubricating workpieces for deep-drawing B21D22/201)} · CPC title

• B21D22/02

  Stamping using rigid devices or tools · CPC title