Brother Kogyo Kabushiki-Kaisha

Masaaki Yokoe

Yoshikazu Kurono

Koji Hayashi

Miho Hashimoto

Narihiro Matsushita

Tomoe Takagi

Yuzo Takagi

Atsuya Hayakawa

Fumiaki Asano

Kiyokazu Sekine

Kyoji Komuro

Hideaki Shimizu

Hideo Kawaguchi

Kouji Hayashi

Tomoe Goto

Mituo Kobayashi

Yoshiyuki Ohtsuka

Humio Nakanishi

A non-ravel stitch data creating method and device for a sewing machine capable of forming a stitch pattern according to stitch pattern data stores stitch pattern data and determines whether or not any stitch pitches of a predetermined number of stitches at at least one of the start and the end of the stitch pattern is equal to or greater than a reference pitch based on the stored stitch pattern data. Non-ravel stitch data is created for performing non-ravel stitching at a stitch pitch less than any stitch pitch of the predetermined number of stitches at at least one of the start and the end of the stitch pattern when a result of the determination is affirmative. Non-ravel stitch data is not created when the result of the determination is negative.

Non-ravel stitch data creating method and device for sewing machine

An apparatus for processing embroidery data necessary for a sewing machine to form an embroidery in an area by filling the embroidery area with stitches, including a storing device storing outline data representing an outline of an embroidery area which outline includes a curved line portion, the outline data including curved line data defining the curved line portion, the curved line data including data indicative of a characteristic of the curved line portion, and a producing device producing the embroidery data by utilizing the outline data. The apparatus may further include a modifying device modifying the outline data and thereby transforming the outline. In this case, the producing device produces, by utilizing the modified outline data representing the transformed outline, embroidery data necessary to form an embroidery inside the transformed outline.

Embroidery data processing apparatus

A stitch pattern data processing method and device for a sewing machine capable of forming a stitch pattern according to stitch pattern data including a plurality of needle location data stores stitch pattern data. It is determined whether a stitch pitch of a stitch to be formed according to each pair of adjacent ones of the plural needle location data of the stored stitch pattern data is equal to or greater than a reference pitch when contracting the stitch at a specified contraction rate in at least one direction of two perpendicular directions, sequentially from one end of the plural needle location data to another end. Needle location data of a contraction stitch pattern data is created so that when a result of the determination is negative, the needle location data nearer to another end is disregarded until the result of the determination becomes affirmative. When the determination result is affirmative, the needle location data is modified so as to define the stitch by the pair of adjacent needle location data which has not been disregarded at the contraction rate.

Stitch pattern data processing method and device for contracting a

An apparatus for preparing stitch position-related data utilized by an embroidery sewing machine for embroidering a predetermined area by forming stitches at respective stitch positions and filling the area with the formed stitches, including a dividing device for dividing the area into a plurality of sub-areas based on outline data representative of an outline of the area, the outline data including sets of position data each of which is representative of a corresponding one of a plurality of specific positions specified on the outline, and a data producing device for producing sets of sub-area data each of which is representative of an outline of a corresponding one of the sub-areas and determining, based on the sets of sub-area data, an order of embroidering of the sub-areas such that, when the embroidery sewing machine forms stitches with a continuous thread and fills each of the sub-areas by the formed stitches, by utilizing the sets of sub-area data and the order of embroidery of the sub-areas, the continuous thread does not pass over the stitches filling the each sub-area, the data producing device using the sets of sub-area data and the order of embroidering of the sub-areas for producing the stitch position-related data.

Embroidery data preparing apparatus

A sewing machine for forming stitch patterns on a fabric comprising a select key, an input key, a cessation signal generator, and a controller. Stitch pattern data for desired stitch patterns are chosen from a large number of stitch pattern data stored in a memory by the select key, and arrangement data, comprising arrangement direction data, arrangement number data, and margin space data, for the stitch patterns are entered via the input key. The sewing machine forms arranged stitch patterns on a fabric by relative movement between a needle and a fabric holder. When some accident, such as thread breakage and needle breakage, occurs, during the stitch pattern formation, the signal generator issues a cessation signal and the controller stops the sewing machine in response to the cessation signal. The controller further recommences the sewing machine in accordance with the arrangement data of the stitch patterns and the stitch pattern data for the next stitch pattern. Since the uncompleted stitch pattern is not formed again after the cause of the accident is removed, the sewing machine can effectively form stitch patterns, especially when repeatedly forming a single stitch pattern or a single combination of stitch patterns.

Stitch pattern formation sewing machine

A sewing system for substantially automatically producing a stitched textile articles by employing a plurality of sewing machines arranged at every manufacturing step. The sewing system includes a holder for holding a workpiece, a plurality of sewing machines capable of performing programmed sewings, a holding member releasably holding the holder, and driving means effecting relative movement between a needle and the holding member in accordance with a sewing program for the programmed sewing, a transferring unit for selectively moving the holder to one of the sewing machines, identification means for identifying a kind of the holder, a memory unit storing therein the sewing programs and data indicative of transferring destinations of the holder transferred by the transferring unit, the sewing programs and the destination data being stored with respect to every kind of one of the holder and the workpiece, and a control unit for reading the sewing program and the destination data from the memory unit in accordance with a result of identification by means of the identification means, and for transmitting the read sewing program to the sewing machine toward which the holder is transferred, as well as for driving the transferring unit in accordance with the destination data.

Sewing system

An embroidery data processing system controls an automatic sewing machine to produce an embroidery design having a blurred side or blurred boundary line between adjacent blocks which make up the embroidery design. The embroidery data processing system includes a first memory storage area for storing side information indicating sides of each of the blocks, a second memory storage area for storing thread density information indicating the thread density of stitches to be formed in said each block, a third memory stoage area for storing in/out patterns indicating how stitching points are to be displaced with respect to the sides of a selected one of the blocks, which are indicated by the side information, and a controller for calculating stitching points depending on the thread density information along the sides of the selected block according to the in/out patterns, and for calculating stitching points depending on the thread density information along the sides of another block than the selected block, which are indicated by the side information. The third memory storage area may store in/out patterns indicating how stitching points are to be displaced with respect to the sides of said each block which are indicated by the side information, and the controller may calculate stitching points depending on the thread density information along the side of said each block according to the in/out patterns.

Embroidery data processing system for automatic sewing machine

Desired individual letter codes indicative of letter to be stitched on a piece of cloth by a sewing machine are selected and entered in relation to the character stitching sequence through a keyboard. Then, character identification codes are constructed according to a predetermined stitching sequence based on the entered individual letter codes and stored outer profiles. Stitch pattern data corresponding to the constructed character identification codes are read out from a memory, and used to control the sewing machine to produce the desired letters having different outer profiles.

Data processor for use in sewing machine

A stitch data processing apparatus which can produce an embroidered pattern utilizing an automatic sewing machine from a pattern of any relative size. The pattern to be embroidered on a work piece is input to the stitch data processing apparatus via a charge coupled device. The charge coupled device produces an image which is displayed on a display device. An operator scales the image to fit onto the display device and then indicates points along the contour of the embroidered pattern and defines regions in which the automatic sewing machine will complete the embroidered pattern. The stitch data processing apparatus is capable of creating curved contours from a number of discreet points input by the operator. It is also possible to control stitch density.

Stitch data processing apparatus for embroidery sewing machine

A data processing device for a sewing machine stores basic pattern data indicating the relative position between a needle and a material holding unit and including X and Y components of an X-Y coordinate. After setting a reference point on the X-Y coordinate plane and two angles (.alpha.i, .beta.i) based on an X-axis and a Y-axis around the reference point, the data processing device rotates the X and Y components of the basic pattern data on the basis of the two angles (.alpha.i, .beta.i) to form a transformed pattern, and stores the transformed pattern data. The processes such as rotation, inversion and inclination are executed by a single operation by designating the angles (.alpha.i, .beta.i).

Data processing device and method for a sewing machine

An electronic controlled stitch pattern sewing machine for sewing a desired pattern in a predetermined sewing region by automatically adjusting the size of the pattern by a simple keyboard operation. The pattern sewing machine includes first calculation means for calculating a size of a stitch pattern area, a sewing region designation means, a second calculation means for calculating a ratio of the size of the sewing region to that of the pattern area, modification means for modifying the stitch pattern data based on the ratio and control means for controlling drive means to cause relative movement between a needle and workpiece holder based on the modified stitch pattern data.

Electronic controlled stitch pattern sewing machine and method

Herein disclosed is a data processing system for a sewing machine, which system comprises: a needle adapted to be moved upward and downward; holding means for holding a material to be stitched; and means for causing a relative movement between said needle and said holding means on the basis of a pattern data indicating a positional relationship therebetween. The data processing system further comprises: first memory means stored with a plurality of unit pattern data related to said relative movement for forming a stitching pattern respectively; pattern selecting means for selecting at least one of stitching pattern from said first memory means; second memory means for storing said selected unit pattern data; designating means for designating a plurality of points on a desired curve; standard line determining means for determining a standard line passing through the plural points designated by said designating means; and computing means for correcting said selected unit pattern data so as to form the stitching pattern, which is stored in said second memory means, along the standard line determine.

Data processing system for sewing machine

A sewing machine with thread take-up mechanism is so constructed as to vertically move a take-up member, supported on a needle bar in such a manner as to be vertically movable at a timing which is different from that of the movement of the needle bar on which the take-up member is moved. The take-up member has a hole through which a thread being lead to the sewing needle is inserted.

Sewing machine with thread take-up mechanism

A device for positioning a workpiece relative to the needle of a sewing machine is shown. The workpiece is mounted on a pallet which is moved in the Y-direction by actuating a motor to move a movable frame upon which a carriage with the attached pallet is mounted. The workpiece is moved in the X-direction by actuating another motor to move the carriage with the attached pallet along the movable frame.

Workpiece feed device in sewing machine

A machine tool having an automatic tool changing device wherein a tool magazine storing many tools is rotatably carried by, and movable with, a spindle head, and a desired tool among them can be automatically selected for being set in a spindle. Each tool is respectively held in a proper tool carrying arm swingably supported by the rotary disc which is indexed by an indexing device to be rotated to bring the selected tool to a corresponding position to the spindle. The selected tool is directly set in the spindle, while being held in the tool carrying arm, in accordance with a swing movement of the tool carrying arm from a first position to a second position. The tool carrying arm, which keeps holding the tool in such a manner as to be rotatable with the spindle while machining, can be restored to the first position by a return swing back to the magazine together with the operation finished tool.

Growing community of inventors

Nagoya, Japan

Masaaki Yokoe