Coating apparatus of airbag reinforcing liquid

Patent metadata

Field	Value
Publication number	US-10697098-B2
Application number	US-201815907652-A
Country	US
Kind code	B2
Filing date	Feb 28, 2018
Priority date	Mar 23, 2017
Publication date	Jun 30, 2020
Grant date	Jun 30, 2020

Abstract

A coating apparatus of an airbag reinforcing liquid is used in a sewing machine that includes: a sewing needle driving an upper thread by penetrating sewing target cloth through a vertical movement; and a presser foot disposed above the sewing target cloth, and feeding the sewing target cloth while moving vertically synchronously with the vertical movement of the sewing needle. The coating apparatus includes: a reinforcing liquid supplying part, supplying a reinforcing liquid for reinforcing a sewn part onto the sewing target cloth on a front side from the sewing needle in a feeding direction of the sewing target cloth; and a stamp part attached to the presser foot, and expand the reinforcing liquid supplied from the reinforcing liquid supplying part onto the sewing target cloth around the sewn part by being operated integrally with the presser foot above the sewing target cloth.

First claim

What is claimed is:

1. A coating apparatus for an airbag reinforcing liquid, which is used in a sewing machine that includes: a sewing needle that is configured to drive an upper thread by penetrating sewing target cloth through a vertical movement, a plurality of pieces of airbag forming cloth vertically overlapped with each other being set as the sewing target cloth; and a presser foot that is disposed above the sewing target cloth, and that is configured to feed the sewing target cloth while moving vertically synchronously with the vertical movement of the sewing needle, the coating apparatus comprising:
a reinforcing liquid supplying part configured to supply a reinforcing liquid for reinforcing a sewn part formed by the sewing needle onto the sewing target cloth on a front side from the sewing needle in a feeding direction of the sewing target cloth; and
a stamp part attached to the presser foot, the stamp part includes a flat surface that extends in the feeding direction of the sewing target cloth, and the stamp part is configured to expand the reinforcing liquid supplied from the reinforcing liquid supplying part onto the sewing target cloth around the sewn part by being operated integrally with the presser foot above the sewing target cloth.

2. The coating apparatus according to claim 1 , wherein the reinforcing liquid supplying part includes an upper reinforcing liquid supplying part that is configured to supply an upper reinforcing liquid, that is at least a part of the reinforcing liquid, onto the sewing target cloth through an upper nozzle disposed above the sewing target cloth.

3. The coating apparatus according to claim 2 , wherein the stamp part is an upper stamp part disposed above the sewing target cloth,
the coating apparatus further comprising:
a lower stamp part that is disposed below the sewing target cloth, and that includes a storing part that is configured to store a lower reinforcing liquid for coating a lower surface of the sewing target cloth, that is a part of the reinforcing liquid,
wherein the reinforcing liquid supplying part further includes a lower reinforcing liquid supplying part that is configured to supply the lower reinforcing liquid to the storing part.

4. The coating apparatus according to claim 3 , wherein the lower stamp part is disposed under the upper stamp part.

5. The coating apparatus according to claim 4 , wherein at least the storing part in the lower stamp part includes a lower elastic part made of an elastic material.

6. The coating apparatus according to claim 5 , wherein at least a part of the upper stamp part includes an upper elastic part made of an elastic material by that the upper reinforcing liquid is expanded.

7. The coating apparatus according to claim 3 , wherein the upper nozzle is attached in a rear portion of the upper stamp part in the feeding direction of the sewing target cloth.

8. The coating apparatus according to claim 3 , wherein the storing part extends in the feeding direction of the sewing target cloth.

9. The coating apparatus according to claim 1 , wherein
the stamp part includes a vertical wall, a horizontal wall attached perpendicular to the vertical wall, and an elastic part that is made of an elastic material and attached to a bottom surface of the vertical wall, and
the flat surface is a flat contact surface formed on a bottom of the elastic part.

10. The coating apparatus according to claim 9 , wherein
an attachment hole is formed in a boundary between the horizontal wall and the vertical wall and extends from a top surface of the vertical wall to the bottom surface of the vertical wall.

11. A coating apparatus for an airbag reinforcing liquid, that is used in a sewing machine that includes: a sewing needle that is configured to drive an upper thread by penetrating a sewing target cloth through a vertical movement, a plurality of pieces of airbag forming cloth vertically overlapped with each other being set as the sewing target cloth; and a presser foot that is disposed above the sewing target cloth, and that is configured to feed the sewing target cloth while moving vertically synchronously with the vertical movement of the sewing needle, the coating apparatus comprising:
an upper reinforcing liquid supplying part configured to drip an upper reinforcing liquid for reinforcing a sewn part formed by the sewing needle from an upper nozzle disposed above the sewing target cloth on a front side from the sewing needle in a feeding direction of the sewing target cloth;
an upper stamp part attached to the presser foot, the upper stamp part includes a flat surface that extends in the feeding direction of the sewing target cloth, and the upper stamp part is configured to expand the upper reinforcing liquid dripped from the upper nozzle on the sewing target cloth around the sewn part by being operated integrally with the presser foot above the sewing target cloth;
a lower stamp part disposed below the sewing target cloth, the lower stamp part includes a flat surface that extends in the feeding direction of the sewing target cloth, and the lower stamp part includes a storing part configured to store a lower reinforcing liquid for coating a lower surface of the sewing target cloth to reinforce the sewn part; and
a lower reinforcing liquid supplying part configured to supply the lower reinforcing liquid to the storing part.

12. The coating apparatus according to claim 11 , wherein the upper nozzle is attached in a rear portion of the upper stamp part in the feeding direction of the sewing target cloth.

13. The coating apparatus according to claim 11 , wherein the storing part extends in the feeding direction of the sewing target cloth.

14. The coating apparatus according to claim 11 , wherein the storing part includes a plurality of storing parts and a communicating passage that communicates the plurality of the storing parts with each other.

15. The coating apparatus according to claim 14 , further comprising
a lower nozzle that penetrates at least one of the plurality of storing parts of the lower stamp part.

Assignees

• Toyoda Gosei Kk

Inventors

• Tanaka Koki

Classifications

• D05B29/12 Primary

  Presser-foot attachment · CPC title

• D05B81/00

  Sewing machines incorporating devices serving purposes other than sewing, e.g. for blowing air, for grinding · CPC title

• B05C9/04

  for applying liquid or other fluent material to opposite sides of the work · CPC title

• D06M23/18

  for the chemical treatment of borders of fabrics or knittings; for the thermal or chemical fixation of cuttings, seams or fibre ends · CPC title

• B05C5/02

  {the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g.} from an outlet device in contact or almost in contact, with the work · CPC title