Sewing control device and sewing machine
AssigneeJanome Sewing Machine Co., Ltd.
InventorsTatsuo Takei, Yoshitaka Bamba, Koji Maeda
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AssigneeJanome Sewing Machine Co., Ltd.
InventorsTatsuo Takei, Yoshitaka Bamba, Koji Maeda
Estimating the term…
A sewing control device includes in a sewing machine having upper feed function a control device which controls feed of an object to be sewn. A lower feed amount setting motor sets a feed amount of a lower feed dog and an upper feed amount change motor changes a feed amount of an upper feed dog. A feed execution range, in which the feed of the object to be sewn is executed by an appropriate feed amount while the object to be sewn is sandwiched between the lower feed dog and the upper feed dog, and a feed non-execution range, in which the feed of the object to be sewn is not executed in a state in which the feed dogs do not act on the object to be sewn, are present. The feed amount of the upper feed dog can be changed only in the feed non-execution range during sewing.
A sewing control device comprising, in a sewing machine having upper feed function, a control device which controls feed of an object to be sewn, wherein a lower feed amount setting motor for setting a feed amount of a lower feed dog and an upper feed amount change motor for changing a feed amount of an upper feed dog are controllably configured, a feed execution range, in which the feed of the object to be sewn is executed by an appropriate feed amount while the object to be sewn is sandwiched between the lower feed dog and the upper feed dog, and a feed non-execution range, in which the feed of the object to be sewn is not executed in a state in which the lower feed dog and the upper feed dog do not act on the object to be sewn, are configured to be present, and the control device controls the upper feed amount change motor such that the feed amount of the upper feed dog can be changed only in the feed non-execution range during sewing.
Dependencies are inferred from the claim text.