US 11,673,346 B2Granted

Manufacturing method of resin frame

AssigneeYKK AP Inc.

InventorsKoji Matsuda, Kazuhiro Kanayama, Isao Kobayashi

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Abstract

A resin frame includes frame members combined into a frame shape that includes a corner portion, and a joint portion joining a pair of the frame members which are adjacent to each other at the corner portion. The joint portion includes an entire-surface welded portion, in which end surfaces of the pair of the frame members are welded to each other over an entire surface in a thickness direction of a plate portion of the frame members, and a partial welded portion, in which the end surfaces of the pair of the frame members are welded to each other on one side of the entire surface in the thickness direction while another side of the entire surface in the thickness direction is not welded. The entire-surface welded portion and the partial welded portion are present at different portions on an outer periphery of the joint portion.

Claims2

Dependent claims

A manufacturing method of a resin frame in which end surfaces of a plurality of frame members provided with plate portions are abutted and welded against each other and the frame members are combined into a frame shape having a corner portion, the manufacturing method comprising:

a step of cutting, in which a pair of frame members among the plurality of the frame members, which are adjacent to each other at the corner portion, are recessed in a stepped shape by cutting another side with respect to one side of a second portion in a thickness direction of a plate portion, the second portion being different from a first portion located in an outer periphery of end surfaces of the pair of the frame members;
a step of melting, in which the end surfaces of the pair of the frame members are heated, entire end surfaces are melted as a welding margin in the first portion, and one side of the end surfaces is melted as a welding margin in the second portion;
a step of welding, in which the welding margins on the end surfaces of the pair of the frame members are abutted and welded against each other, wherein a portion of the welding margin protrudes on an outer peripheral side with respect to a position of the original end surfaces of the frame members in the first portion;
and
a step of removing, in which a portion of the welding margin that protrudes in the step of welding is removed.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/493,277Filed 4 Oct 2021 · division
Priority: JP JP2018-1099738 Jun 2018
Published: US 2022/0024148 A127 Jan 2022
Granted: 13 Jun 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification23 codes

B29C 66/52431
For forming corner connections, e.g. for making window frames or V-shaped pieces: with a right angle, e.g. for making L-shaped pieces
B29C 65/20
Using heated tools: with direct contact, e.g. using "mirror"
B29C 66/02241
With removal of material: cutting, e.g. by using waterjets, or sawing
B29C 66/0326
Mechanical after-treatments: cutting, e.g. by using waterjets, or perforating

Family

Application16/433,168Parent of this division · filed 6 Jun 2019
US 2022/0024148 A1Pre-grant publication · published 27 Jan 2022
US 11,167,501 B2Parent of this division
US 2020/0009804 A1Published application
US 11,673,346 B2This patent

From the US filing history. Foreign family members aren’t listed.