Dyeing apparatus, dyeing unit, dyeing/embroidery system, and adjustment method in dyeing apparatus

Patent metadata

Field	Value
Publication number	US-12473679-B2
Application number	US-202117449117-A
Country	US
Kind code	B2
Filing date	Sep 28, 2021
Priority date	Sep 30, 2020
Publication date	Nov 18, 2025
Grant date	Nov 18, 2025

Abstract

A dyeing apparatus is configured to be connected to an embroidery apparatus. The dyeing apparatus includes a dyer configured to dye a thread; a conveying path in which a path length of the thread from the dyer to the embroidery apparatus is changed according to an operation of the embroidery apparatus; and a conveyance control unit configured to adjust a conveyance speed of the thread in the conveying path, according to a change in the path length. The dyer dyes the thread at a dyeing speed that matches the adjusted conveyance speed.

First claim

What is claimed is:

1 . A dyeing apparatus configured to be connected to an embroidery apparatus, the dyeing apparatus comprising:
a dyer configured to dye a thread; a conveying path in which a path length of the thread from the dyer to the embroidery apparatus is changed according to an operation of the embroidery apparatus; and circuitry configured to adjust a conveyance speed of the thread in the conveying path, according to a change in the path length, wherein the dyer dyes the thread at a dyeing speed that matches the adjusted conveyance speed, the conveying path includes
an inlet nip roller provided upstream with respect to the dyer in a conveying direction of the thread, the inlet nip roller being an upstream end of the conveying path,
an outlet nip roller provided adjacent to the embroidery apparatus, the outlet nip roller being a downstream end of the conveying path, and
a dancer roller provided adjacent to an upstream side of the outlet nip roller and configured to be raised and lowered vertically,
the inlet nip roller conveys the thread at the conveyance speed controlled by the circuitry, the outlet nip roller conveys the thread such that the thread is pulled by an amount corresponding to an amount of the thread consumed at the embroidery apparatus, the path length changes as the dancer roller is raised or lowered according to a difference between a cumulative consumption length of the thread consumed at the embroidery apparatus and a cumulative conveyance length of the thread conveyed by the inlet nip roller, and the circuitry is further configured to
cause a position detector to detect a vertical position of the dancer roller in a vertical direction,
calculate the path length based on the vertical position of the dancer roller, at a detection timing that approaches every time a conveyance amount of the thread conveyed by the inlet nip roller reaches a predetermined length,
calculate a change amount of the path length calculated at a current detection timing from a path length calculated at a previous detection timing,
calculate a deviation amount of the path length calculated at the current detection timing from a path length initial value calculated at an embroidery starting point,
calculate and invoke an assumed thread consumption amount used at the embroidery apparatus between the detection timings, and
adjust the conveyance speed at the inlet nip roller for a next detection timing, according to the change amount of the path length, the deviation amount of the path length from the path length initial value, and the assumed thread consumption amount used between the previous detection timing and the current detection timing.

2 . The dyeing apparatus according to claim 1 , wherein
the dyer dyes the thread based on dye data, and the circuitry is further configured to
calculate the assumed thread consumption amount used at the embroidery apparatus, between the current detection timing and the next detection timing during which the thread is conveyed for a time corresponding to the conveyance speed adjusted for the next detection timing, by the predetermined length, at the conveyance speed adjusted for the next detection timing,
calculate an embroidery data length deviation amount that is a deviation amount of an embroidery data consumption amount at the embroidery apparatus from an assumed amount, between the previous detection timing and the current detection timing, and
adjust a data length of the dye data used between the current detection timing and the next detection timing, according to the embroidery data length deviation amount and the assumed thread consumption amount used between the current detection timing and the next detection timing.

3 . The dyeing apparatus according to claim 2 , wherein
the circuitry is further configured to
delete first data in the dye data of a next period, when increasing the data length of the dye data, and
add dummy data immediately before the dye data of the next period, when decreasing the data length of the dye data.

4 . The dyeing apparatus according to claim 1 , wherein
the dyer dyes the thread based on dye data, and the circuitry is further configured to
calculate an assumed cumulative thread consumption amount until the next detection timing, obtained by adding, to a cumulative thread consumption amount up to the current detection timing, the assumed thread consumption amount used at the embroidery apparatus, between the current detection timing and the next detection timing during which the thread is conveyed for a time corresponding to the conveyance speed adjusted for the next detection timing, by the predetermined length, at the conveyance speed adjusted for the next detection timing,
calculate an embroidery data length deviation amount that is a deviation amount of an embroidery data consumption amount at the embroidery apparatus from an assumed amount, between the previous detection timing and the current detection timing, and
adjust a data length of the dye data used between the current detection timing and the next detection timing, according to the embroidery data length deviation amount and the assumed cumulative thread consumption amount up to the next detection timing.

5 . The dyeing apparatus according to claim 1 , wherein
the circuitry is further configured to
calculate the path length based on the vertical position of the dancer roller detected by the position detector, at a detection timing that approaches every time a predetermined time approaches,
calculate a change amount of the path length calculated at a current detection timing from a path length calculated at a previous detection timing,
calculate a deviation amount of the path length calculated at the current detection timing from a path length initial value calculated at an embroidery starting point,
calculate and invoke an assumed thread consumption amount used at the embroidery apparatus between the detection timings, and
adjust the conveyance speed at the inlet nip roller for a next detection timing, according to the change amount of the path length, the deviation amount of the path length from the path length initial value, and the assumed thread consumption amount used between the previous detection timing and the current detection timing.

6 . The dyeing apparatus according to claim 5 , wherein the dyer dyes the thread based on dye data, and
the circuitry is further configured to
calculate the assumed thread consumption amount used at the embroidery apparatus, between the current detection timing and the next detection timing during which the thread is conveyed by a length corresponding to the conveyance speed adjusted for the next detection timing, for the predetermined time, at the conveyance speed adjusted for the next detection timing,
calculate an embroidery data length deviation amount that is a deviation amount of an embroidery data consumption amount at the embroidery apparatus from an assumed amount, between the previous detection timing and the current detection timing, and
adjust a data length of the dye data used between the current detection timing and the next detection timing, according to the embroidery data length deviation amount and the assumed thread consumption amount used between the current detection timing and the next detection timing.

7 . A dyeing unit configured to be connected to an embroidery unit, the dyeing unit comprising:
a dyer configured to dye a thread; a conveying path in which a path length of the thread from the dyer to the embroidery unit is changed according to an operation of the embroidery unit; and circuitry configured to adjust a conveyance speed of the thread in the conveying path, according to a change in the path len

Assignees

• Sunaoshi Masayuki
• Ricoh Co Ltd

Inventors

• Sunaoshi Masayuki

Classifications

• D05C5/00

  Embroidering machines with arrangements for automatic control of a series of individual steps · CPC title

• D06P1/0032

  Determining dye recipes and dyeing parameters; Colour matching or monitoring · CPC title

• D06P5/30

  Ink jet printing · CPC title

• D05B67/00

  Devices incorporated in sewing machines for lubricating, waxing, or colouring the threads · CPC title

• D05C11/24 Primary

  incorporating devices for dyeing or impregnating the threads · CPC title