Method of manufacturing and manufacturing apparatus for an assembled product

Patent metadata

Field	Value
Publication number	US-2018281131-A1
Application number	US-201815938534-A
Country	US
Kind code	A1
Filing date	Mar 28, 2018
Priority date	Mar 28, 2017
Publication date	Oct 4, 2018
Grant date	—

Abstract

A method of manufacturing produces an assembled product where a ring-shaped seal is attached to a channel in an inner circumferential surface of a ring-shaped component. The method includes: a holding step that moves an engaged portion of the seal inwardly in a radial direction using a deformation member, while restricting movement of the seal in a direction parallel to an inner circumferential wall of the channel, to cause deformation so that the outer diameter of part of the seal aside from the engaged portion becomes smaller than the channel inner circumferential diameter; and an attachment step that attaches the seal to the channel by releasing the seal to restore the seal from the deformation. The attachment step includes releasing the seal by releasing engagement by the deformation member and moving the seal body inside the channel while pressing out the seal body from inside.

First claim

What is claimed is:

1 . A method of manufacturing an assembled product where a ring-shaped seal body is attached to a ring-shaped attachment channel formed in an inner circumferential surface of a ring-shaped component main body, comprising:
a holding step that moves an engaged portion of the seal body inwardly in a radial direction using a deformation engagement member, which is capable of moving in the radial direction between a standby position on an outside of an outer edge of the seal body and a holding position that is inside the standby position in a radial direction while restricting movement of the seal body in a direction that is parallel to an inner circumferential wall of the attachment channel, causes deformation so that an outer diameter of the seal body becomes smaller than an inner circumferential diameter of the attachment channel, and holds the seal body in a state where the seal body is engaged by the deformation engagement member at the holding position; and an attachment step that releases holding of the seal body held in the deformed state in the holding step while restricting movement of the seal body in the parallel direction to return the seal body to a widened state and attach the seal body to the attachment channel of the component main body, the attachment step including:
a releasing step of releasing engagement of the deformation engagement member with the seal body held in the deformed state to release a held state of the seal body; and
a movement step of moving the seal body inside the attachment channel while outwardly pressing the seal body from an inside of the seal body.

2 . A method of manufacturing an assembled product according to claim 1 ,
wherein the movement step includes: a first attachment step that moves a plurality of diameter-expanding movement members, which are capable of moving in the radial direction between movement standby positions where the diameter-expanding movement members contact the inside of the seal body that has been deformed in the holding step and attachment positions that are outside the movement standby positions in the radial direction, from the movement standby positions to the attachment positions to attach the seal body to the attachment channel of the component main body; and a second attachment step that attaches the seal body to the attachment channel of the component main body by causing the deformation engagement member to contact the engaged portion of the seal body from an inside and moving the deformation engagement member to the outside in the radial direction.

3 . A method of manufacturing an assembled product according to claim 1 ,
wherein the seal body has a first facing surface that faces one inner wall out of a pair of inner walls of the attachment channel when the seal body is attached to the attachment channel and a second facing surface that faces another inner wall, and the holding step and the attachment step move the seal body in the radial direction while restricting the first facing surface and the second facing surface.

4 . A method of manufacturing an assembled product according to claim 3 ,
wherein the seal body includes an inner circumferential portion that tapers toward an inner circumferential edge side of the seal body and an outer circumferential portion that is formed with a surface that is parallel to the inner circumferential wall, and the attachment step attaches the seal body to the attachment channel in a state where the outer circumferential portion of the seal body is kept on an outside of the seal body.

5 . The method of manufacturing an assembled product according to claim 1 , further comprising:
a seal preparing step that places a seal body before holding at a predetermined position; and a component main body preparing step that places a component main body before attachment of the seal body at an attachment position.

6 . An attachment unit that attaches a seal body and is used in a manufacturing apparatus that manufactures an assembled product, which includes a component main body and a ring-shaped seal body that has been attached to a ring-shaped inner circumferential surface of the component main body, the attachment unit comprising:
a ring holding portion that supports the ring-shaped seal body to be attached to a ring-shaped channel formed in the inner circumferential surface of the component main body; a deformation mechanism that moves the engaged portion of the seal body inward in a radial direction to cause deformation of the seal body, and holds the seal body by acting in concert with the ring holder unit, the deformation mechanism including a deformation engagement member that engages the engaged portion of the seal body and moves the engaged portion inward in the radial direction; and a ring attaching mechanism that moves the seal body supported by the ring holding portion to the attachment channel and attaches the seal body by acting in concert with the deformation mechanism.

7 . The attachment unit according to claim 6 ,
wherein the ring holding portion includes: a pair of guide portions whose diameter is smaller than the inner circumferential diameter of the seal body and support the ring-shaped seal body while restricting deformation of the seal body in an intersecting direction that intersects the radial direction around a circumferential direction of the seal body and permitting movement of the seal body in the radial direction; a support portion that includes a first surface and a second surface that face the pair of guide portions and an engagement portion that engages part of an inner circumferential portion of the seal body, and is formed so as to be capable of housing the seal body whose diameter has been reduced; a plurality of cutaway portions provided, at predetermined intervals, in a radial direction from a center axis side of the pair of guide portions; and an engagement cutaway portion that permits movement of the deformation engagement member.

8 . The attachment unit according to claim 7 ,
wherein the deformation mechanism includes: the deformation engagement member that is capable of moving between an outer standby position set on an outer circumferential side of the ring holding portion and a holding position set on an inner circumferential side of the ring holding portion; a first deformation moving mechanism that reciprocally moves the deformation engagement member along the first surface between the outer standby position and the holding position; and a second moving mechanism that reciprocally moves the deformation engagement member in a direction that intersects the first surface between the holding position and an intersecting direction standby position.

9 . The attachment unit according to claim 6 ,
wherein the ring attachment mechanism includes: a plurality of ring attachment members that are capable of moving between attachment positions, a plurality of which are set at predetermined intervals in a circumferential direction on an outer circumferential side of the ring holding portion, and standby positions, a plurality of which are set at predetermined intervals in a circumferential direction on a center axis side of the ring holding portion; and an attachment moving mechanism that reciprocally moves the plurality of ring attaching members between the respective standby positions and the attachment positions.

10 . The attachment unit according to claim 7 ,
wherein the pair of guide portions include: a first guide member that includes the first surface; and a second guide member that includes the second surface, wherein the first guide member and the second guide member include a plurality of cutaway portions a

Assignees

• Hirata Spinning

Inventors

• Noda Mitsuhiro

Classifications

• B23P19/047 Primary

  for flexible profiles, e.g. sealing or decorating strips in grooves or on other profiles by devices moving along the flexible profile (hand tools therefor B25B27/0092) · CPC title

• F16J15/3268 Primary

  Mounting of sealing rings · CPC title

• B23P19/084

  for placing resilient or flexible rings, e.g. O-rings, circlips · CPC title

• B23P11/02 Primary

  by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits · CPC title

• B23P19/02

  for connecting objects by press fit or for detaching same (B23P19/10 takes precedence) · CPC title