Brother Kogyo Kabushiki-kaisha

Tomohiko Mori

Yuji Iida

Ayako Yoshimura

Masashi Tokura

Tsuneo Okuyama

Motoshi Kishi

Naoki Tanjima

Shoichi Taguchi

Masahiko Nagai

Takashi Hirata

Takafumi Naka

Seijiro Okuda

Yasuo Miyake

A sewing machine including an image capturing unit disposed at a position capable of capturing images of the stitches formed on the workpiece cloth and capturing images of the stitches at least from either upper and undersides of the workpiece cloth; an extracting section that extracts, from the image data of the stitches captured by the image capturing unit, a region occupied by an opposite side thread appearing at an interlace of the needle thread and the bobbin thread; a calculating section calculating an area of the extracted region; an evaluating section that evaluates a tension balance between the needle thread and the bobbin thread based on the area calculated by the calculating section; and a controller controlling the thread tension adjustment mechanism to modify the tension balance of the stitches based on a result of evaluation by the evaluating section.

Sewing machine, computer readable medium storing thread tension adjustment program for sewing machine, and thread tension evaluation unit

A sewing machine includes a detection device that detects whether a feed distance by which the piece of work cloth is shifted by a feed dog in the back-and-forth or right-and-left direction has reached a predetermined distance, a counting device that counts a number of forward feed stitches and a number of backward feed stitches which are sewn when the piece of work cloth is shifted backward and forward, respectively, by the predetermined feed distance detected by the detection device or a number of leftward feed stitches and a number of rightward feed stitches which are sewn when the piece of work cloth is shifted leftward and rightward, respectively, by the predetermined feed distance, and a correction value setting device that sets a correction value to correct the feed distance based on a result of the counting of the number of stitches by the counting device.

Sewing machine

A sewing machine includes a needle bar, a needle bar up-and-down movement mechanism that raises and lowers the needle bar, a needle bar up-and-down movement mechanism that raises and lowers the needle bar and a sewing machine motor for driving the needle bar up-and-down mechanism. The sewing machine further includes an operation device that is provided separately from a body of the sewing machine including at least one operation member to be operated by a user that outputs an output signal corresponding to an operation state of the operation member. The sewing machine also includes a command determination device that determines a command that corresponds to the output signal output by the operation device as a determined command and a drive control device that controls a predetermined operation of the sewing machine in accordance with the determined command.

Sewing machine and computer-readable recording medium storing sewing machine operation program

A pattern selecting portion selects a desired embroidery pattern from a plurality of embroidery patterns. A pattern editing portion edits the embroidery pattern displayed on the display. A first determining portion determines, before the selected embroidery pattern is edited by the pattern editing portion, whether each of a plurality of embroidery frames is usable for sewing the selected embroidery pattern based on embroidery data for the selected embroidery pattern. A second determining portion determines, after the selected embroidery pattern is edited by the pattern editing portion, whether each of the plurality of embroidery frames is usable for sewing the edited embroidery pattern based on embroidery data for the edited embroidery pattern. A reporting portion reports when at least one embroidery frame determined to be usable by the second determining portion is different from at least one embroidery frame determined to be usable by the first determining portion.

Embroidery data editor that displays usable embroidery frame

A pattern data producing device incorporated in a sewing machine which comprises a sewing mechanism including a needle swing mechanism and a display and in which the sewing mechanism is operated so that a pattern sewing can be carried out, thereby producing pattern data. The pattern data producing device includes a touch panel mounted on an outer surface of the display so as to be capable of detecting a location of touch, a pen-shaped pointing device inputting and instructing on the touch panel a plurality of points corresponding to a plurality of needle drop points forming a pattern, a pattern data producing unit which obtains location data of needle drop points from the input points to produce pattern data, and a display data producing unit which produces, from the location data of needle drop points, display data for displaying a configuration of the pattern on the display.

Pattern data producing device for sewing machine and pattern data producing control program

A sewing machine includes an embroidery frame moving device detachably attachable to a sewing machine body and a control device. An embroidery sewing operation is executable when the embroidery frame moving device is attached to the body, and a normal sewing operation is executable when the moving device is detached from the body. The control device controls the sewing machine in a first stage under only a normal sewing mode in which the normal sewing operation is executed. The first stage ends when a detector detects the embroidery frame moving device initially attached to the body. The control device further controls the sewing machine in a second stage under either the normal sewing mode or an embroidery sewing mode in which the embroidery sewing operation is executed. The second stage starts after the detector has detected the embroidery frame moving device attached to the body.

Sewing machine to which embroidery frame moving device is detachably attachable

In a sewing data processing device, an LCD is switched to a pattern selecting screen when a user selects a desired stitch or sewing mode on a menu selecting screen. The user selects a desired embroidery pattern on the pattern selecting screen. When the selected embroidery pattern is a character pattern protected by copyright, a control device counts the number of times of use of the embroidery data of the selected character pattern to store data of the number of times of use in a non-volatile memory.

Sewing data processing device for sewing machine

A sewing machine having an embroidery frame and a drive unit for driving that frame with respect to the sewing needle, wherein the area occupied by the frame and drive unit can be reduced for storage. To do this, the user presses a storage button on an LCD touch panel screen. The CPU determines that a command has been given to reduce the area of the frame and drive unit for storage; calculates the amount of drive necessary to move the embroidery frame from its current position stored in nonvolatile memory to the position used for storing the drive unit; and controls drive motors to move the embroidery frame the distance calculated, reducing the overall area occupied by the frame and drive unit.

Sewing machine facilitating storage of embroidery attachment

A sewing pattern is located with respect to a predetermined sewable region (103) based on sewing pattern data indicative of a shape of the sewing pattern. The angular position of the sewing pattern can be changed into another angular position. It is judged whether or not the angular position-changed sewing pattern fits within the sewable region. When it is judged that the angular position-changed sewing pattern fails to fit within the sewable region, the angular position of the sewing pattern is further changed into still another angular position. It is indicated that the angular position of the sewing pattern has been further changed.

Sewing data processing device with data editing function

A sewing operation procedure display apparatus for a sewing machine for teaching information regarding a sewing operation includes an LCD provided on a body of the sewing machine, and a ROM in which data of a plurality of teaching picture images are stored corresponding to stitches of a 'plain seaming stitch', a 'button hole' and a 'blind stitch' and sewing conditions for an 'expansible fabric' and a 'blind stitch'. The sewing operation procedure display apparatus further includes an operation selection section for selecting one of the stitches and a sewing condition such as a type of a fabric, and a CPU for reading out a teaching picture image or images in accordance with the stitch and the sewing condition selected by way of the operation selection section from the ROM and causes the LCD to display the teaching picture image or images thereon.

Growing community of inventors

Inazawa, Japan

Tomohiko Mori