JP2009114551A - Embroidering yarn, yarn reel, and embroidering sewing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an embroidering yarn which is dyed or colored with a plurality of colors only in a used yarn amount in an embroidering order so as to be embroidered with the yarn to largely shorten a time required for yarn-exchanging works without switching the yarn, even when an embroidery pattern comprises a plurality of colors, to provide a yarn reel on which the embroidering yarn is wound, and to provide an embroidering sewing machine using the embroidering yarn or the yarn reel. <P>SOLUTION: This embroidering yarn 2 is colored in the order of a yellow portion 11A, a red portion 12A, a green portion 13A, ..., according to the embroidering sequence of the respective color portion patterns 11-15 of an embroidery pattern 1. The yellow portion 11A comprises first an essential embroidering portion 11a for embroidering the yellow portion pattern 11, a pattern portion 11b capable of being omitted, and an under-embroidering or temporarily embroidering portion 11c. The red portion 12A, the green portion 13A, ..., are similarly formed. The embroidering yarn 2 is continuously dyed or colored to form a plurality of colored pairs so that a plurality of embroidery patterns 1 can be formed with one embroidering yarn. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embroidery thread, a thread spool and an embroidery sewing machine, and more particularly, an embroidery thread in which the colors of a plurality of partial patterns are dyed or colored by the amount of thread used according to the sewing order, The present invention relates to a wound thread spool, and a sewing machine that can be used for embroidery sewing using this embroidery thread or thread spool.

  Conventionally, when sewing an embroidery pattern including a plurality of partial patterns of a plurality of colors with a sewing machine that has only one needle bar and can be sewn, sewing is performed from a light colored partial pattern based on sewing data for each color. Then, every time it is replaced with a partial pattern of the next color, the thread piece is manually replaced with a thread piece of the thread color indicated by the sewing data, threading and threading are performed, and a plurality of partial patterns are sequentially formed. Sewing. In this case, when the embroidery pattern is composed of a large number of colors, the number of times of exchanging the thread spools increases, and it takes time to replace the thread spools, which is troublesome for the operator.

Various techniques have been proposed in order to eliminate the complexity of the thread spool changing work.
For example, Patent Document 1 discloses a yarn processing machine that realizes the replacement of the yarn accompanying the replacement of the yarn color by a mechanical configuration. In this yarn processing machine, a plurality of spools (yarn pieces) each wound with a plurality of thread-colored yarns are mounted on a spool carrier, and a duct communicated with a compressed air nozzle on the downstream side of the spool carrier in the yarn drawing direction. A yarn coupling device having a vortex chamber is provided.

When changing to a different color thread, cut the thread of the first used color with the cutting device, engage the cut yarn with the yarn pulling device, and then replace the new color thread to be used next. It is inserted into the vortex chamber manually or via a yarn feeder. Next, by supplying compressed air into the vortex chamber, the two yarns having different colors are spirally entangled so that the two yarns can be connected to each other.
JP-A-5-179560

  In the yarn processing machine described in Patent Document 1, the replacement of the yarn accompanying the switching of the thread color can be realized by a mechanical configuration. However, when switching to a different color thread, the thread is cut and In order to make the connection, the sewing operation must be interrupted in the middle of the sewing, and it takes time to connect the threads, so that there is a problem that a smooth thread change operation cannot be performed.

  On the other hand, since it is necessary to arrange a plurality of yarn pieces of different colors on the bobbin winder, the machine becomes large in size, and a mechanism such as a cutting device, a yarn connecting device, a yarn supplying device, and a compressed air supplying device Therefore, there is a problem that the sewing apparatus becomes large and complicated, and that it cannot be applied to an existing sewing machine.

  The present invention greatly reduces the time required for the thread switching operation, so that even if the embroidery pattern is composed of a plurality of colors, a plurality of colors can be sewn without changing the thread. Is to provide an embroidery thread dyed or colored by the amount of thread used in the order of embroidery sewing, a thread spool wound with this embroidery thread, and a sewing machine capable of embroidery sewing using this embroidery thread or thread spool.

  The embroidery thread according to claim 1, wherein the partial pattern calculated from the sewing order of the partial patterns when sewing an embroidery pattern including a plurality of partial patterns including partial patterns of different colors and the embroidery data of the partial patterns. Based on the amount of used yarn, the color of the partial pattern is dyed or colored by the amount of used yarn according to the sewing order.

  This embroidery thread is different because a single thread is dyed or colored by the amount of thread used for the partial pattern calculated from the embroidery data of the partial pattern in advance according to the sewing order of the plurality of partial patterns. An embroidery pattern composed of a plurality of colored partial patterns can be sewn. The embroidery thread may be configured such that the same embroidery pattern can be sewn multiple times, or a plurality of different embroidery patterns can be sewn.

  The embroidery thread according to claim 2 is characterized in that, in the invention according to claim 1, the amount of thread used is set longer by a predetermined thread amount. The amount of thread used for the partial pattern calculated from the embroidery data changes according to the thickness of the work cloth and the stitch pitch, so that the embroidery thread will not run out when sewing the partial pattern in advance. The amount of yarn used for each pattern is dyed or colored longer by a predetermined amount.

  A thread spool according to a third aspect is characterized in that the embroidery thread according to the first or second aspect is wound around a thread spool main body.

According to a fourth aspect of the present invention, there is provided a thread spool comprising storage means for storing at least one of thread color information, sewing order information, and used thread amount information of the embroidery thread in a readable / writable manner.
The thread spool is provided with storage means for storing at least one of thread color information of the embroidery thread for a plurality of partial patterns, sewing order information for sewing the plurality of partial patterns, and used thread amount information for each partial pattern in a readable / writable manner. Therefore, this information can be used for sewing. In addition to the above information, information such as an identification number peculiar to the yarn spool and the remaining amount of yarn may be stored.

  According to a fifth aspect of the present invention, in the invention of the fourth aspect, the storage means includes a wireless tag capable of transmitting and receiving the information by wireless communication. When sewing an embroidery pattern using this thread spool, if the thread spool is mounted on the thread stand of the sewing machine, the information stored in the wireless tag can be transmitted to the control device wirelessly.

  The sewing machine capable of embroidery sewing according to claim 6 is capable of embroidery sewing having an embroidery frame transfer mechanism for independently transferring the embroidery frame holding the work cloth used for embroidery sewing in two predetermined directions based on the embroidery data of the embroidery pattern. In a sewing machine, the amount of yarn consumed by sewing the embroidery thread according to claim 1 or 2 or the embroidery thread supplied from the thread spool according to any of claims 3 to 5 is detected for each partial pattern. Thread matching amount detecting means, matching means for matching the yarn consumption detected by the yarn consumption amount detecting means and the used thread amount based on the embroidery data for each partial pattern, and the matching result of the matching means And a yarn amount correcting means for calculating a remaining yarn amount that is not consumed by the used yarn amount and correcting a planned consumed yarn amount at an unsewn portion according to the remaining yarn amount. .

  When the sewing of the embroidery pattern is started using the thread spool around which the embroidery thread is wound, the thread consumption amount detecting means detects the thread consumption amount consumed for the sewing for each partial pattern. The collating unit collates the yarn consumption detected by the yarn consumption detecting unit with the used yarn amount based on the embroidery data for each partial pattern. The thread amount correction means calculates the remaining thread amount of the currently sewn thread color that has not yet been used up based on the collation result of the collating means, and schedules the unsewn area according to the remaining thread amount. Correct the amount of yarn consumed.

  The sewing machine capable of embroidery sewing according to claim 7 is characterized in that, in the invention of claim 6, the thread amount correcting means has embroidery data changing means for changing a part of the embroidery data.

  The sewing machine capable of embroidery sewing according to claim 8 is the sewing machine according to claim 6 or 7, wherein the thread amount correction means performs underlay stitching in a region where the embroidery pattern is sewn on the work cloth. It has a sewing execution means.

  The sewing machine capable of embroidery sewing according to claim 9 is the sewing machine according to any one of claims 6 to 8, wherein the thread amount correction means performs temporary sewing outside the region where the embroidery pattern is sewn on the work cloth. It has an execution means.

  A sewing machine capable of embroidery sewing according to a tenth aspect of the present invention is the sewing machine according to any one of the sixth to ninth aspects, further comprising cloth thickness detecting means for detecting the cloth thickness of the work cloth, wherein the yarn amount correcting means is the cloth thickness detecting means. Thread density changing means for changing the thread density of the embroidery pattern in accordance with the thickness of the work cloth detected by the means is provided.

  An embroidery sewing machine according to an eleventh aspect is characterized in that, in the invention according to any one of the sixth to tenth aspects, the detection means includes a rotary encoder for detecting a movement amount of the embroidery thread.

  A sewing machine capable of embroidery sewing according to a twelfth aspect of the present invention is the sewing machine according to any one of the sixth to eleventh aspects, a reader that reads information stored in the wireless tag according to claim 5, and a writer that writes information to the wireless tag. It is characterized by having.

  According to the first aspect of the present invention, the embroidery of the partial patterns is performed in advance according to the sewing order of the plurality of partial patterns so that the embroidery pattern composed of the plurality of partial patterns of different colors can be embroidery-sewn with one thread. Since the embroidery thread is dyed or colored on one thread by the amount of thread used for the partial pattern calculated from the data, there is no need to change the thread spools more than once when sewing multiple colors. The sewing time of the pattern can be shortened, and the labor required for replacing the thread spool can be eliminated. Further, since the embroidery pattern can be sewn using the embroidery thread of one thread piece without using a plurality of thread color thread pieces, the cost of the thread piece can be reduced.

  According to the invention of claim 2, in addition to the effect of the invention of claim 1, the amount of yarn used for each partial pattern is set in advance longer by a predetermined yarn amount. Even if the thickness and stitch pitch vary, the thread used for sewing each partial pattern does not run out during the sewing.

  According to the invention of claim 3, the embroidery thread of claim 1 or 2 can be provided to the user in the state of a thread spool wound around the thread spool main body. It is also possible to provide the user with a set of embroidery data for a specific embroidery pattern and a thread piece of embroidery thread that can be sewn with this embroidery pattern, so that multiple colors necessary for sewing a specific embroidery pattern can be provided. It is no longer necessary to prepare all of the plurality of thread spools, and the cost of the thread spools can be reduced.

  According to the invention of claim 4, in addition to the effect of the invention of claim 3, the thread piece of claim 3 is at least one piece of information on thread color information of embroidery thread, sewing order information, and used thread amount information. Therefore, at least one piece of information on the thread color of the embroidery thread, the sewing order, and the amount of thread used can be written and stored in the thread spool itself. Furthermore, by reading out these pieces of information from the thread spool, various kinds of information on the embroidery thread wound around the thread spool can be easily recognized.

  According to the invention of claim 5, in addition to the effect of the invention of claim 4, the storage means comprises a wireless tag capable of transmitting and receiving the information by wireless communication. Since it can be mounted on a part that does not become necessary, is inexpensive, and can communicate wirelessly, connection of a communication line is unnecessary and it is easy to use.

  According to the sixth aspect of the present invention, when performing embroidery sewing using a thread spool wound with embroidery threads colored in a plurality of colors, the thread consumption detecting means is supplied from the thread spool and consumed for sewing. Since the yarn consumption is detected for each partial pattern, the yarn consumption for each color can be reliably grasped. The collating unit collates the yarn consumption detected by the yarn consumption detecting unit with the used yarn amount based on the embroidery data for each partial pattern.

  The thread amount correction means calculates the remaining thread amount of the currently sewn color that has not been consumed yet, based on the collation result of the collating means, and in accordance with the remaining thread amount, the sewing amount of the unsewn portion is Therefore, it is possible to prevent the embroidery thread of that color from being used up before the sewing of the partial pattern currently being sewn is completed.

  According to the invention of claim 7, in addition to the effect of the invention of claim 6, since the yarn amount correction means has the embroidery data changing means for changing a part of the embroidery data, the part of the embroidery data is changed. This makes it possible to correct the planned amount of yarn consumed at an unsewn location.

  According to the invention of claim 8, in addition to the effect of the invention of claim 6 or 7, the yarn amount correction means is a lower part for performing underlay sewing in a region where the embroidery pattern is sewn on the work cloth. Since the sewing machine has the stitching execution means, the surplus embroidery thread can be eliminated by using the surplus embroidery thread for underlay sewing.

  According to the invention of claim 9, in addition to the effect of the invention of any one of claims 6 to 8, the yarn amount correcting means is for performing temporary stitching outside the area where the embroidery pattern is sewn on the work cloth. Since the temporary sewing execution means is provided, temporary sewing can be performed using an excess embroidery thread, and the temporary sewing can be discarded later.

  According to the invention of claim 10, in addition to the effect of the invention of any one of claims 6 to 9, the cloth thickness detecting means for detecting the cloth thickness of the work cloth is provided, and the yarn amount correcting means is the cloth thickness. Since the yarn density changing means for changing the yarn density of the embroidery pattern according to the thickness of the work cloth detected by the detecting means is provided, the amount of yarn consumed can be changed as appropriate by changing the yarn density.

  According to the invention of claim 11, in addition to the effect of the invention of any one of claims 6 to 10, the yarn consumption amount detecting means has the rotary encoder for detecting the movement amount of the embroidery thread. The yarn amount can be detected.

  According to the invention of claim 12, in addition to the effect of the invention of any one of claims 6 to 11, a reader for reading information stored in the wireless tag of claim 5 and a writer for writing information to the wireless tag Therefore, information on the wireless tag can be read and information can be written on the wireless tag.

The best mode for carrying out the present invention will be described below with reference to the drawings.
The present invention provides an embroidery thread in which a plurality of colors are dyed or colored in order of sewing so that a single thread can be sewed without replacing the thread spool, and the embroidery thread is wound around And a sewing machine that can be used to sew an embroidery pattern.

First, a description will be given of an embroidery thread (multi-color embroidery thread) in which a plurality of colors are dyed or colored by the used thread amount of a plurality of partial patterns in the sewing order so that embroidery can be sewn with one thread.
The embroidery thread of this embodiment is, for example, an embroidery thread in which a plurality of colors are dyed or colored by the amount of thread used in a plurality of partial patterns in the sewing order so that the embroidery pattern shown in FIG. It is.
However, since the length of the necessary embroidery thread changes according to the size of the embroidery pattern, the embroidery pattern of this embodiment is intended for an embroidery pattern of a predetermined standard size.

  FIG. 1 shows an example of an embroidery pattern. The embroidery pattern 1 is composed of partial patterns 11 to 15 of five colors of yellow, red, green, blue, and black. When the yellow part pattern 11, the red part pattern 12, the green part pattern 13, the blue part pattern 14, and the black part pattern 15 are all embroidered in this order, the embroidery pattern 1 is completed.

  FIG. 2A is a table showing the number of stitches in the embroidery data for sewing the partial patterns 11 to 15 of the respective colors, the stitch pitch, and the basic thread quantity calculated based on them. FIG. 2B is a table in which the relationship between the cloth thickness and the correction coefficient k1 is set in advance, and the cloth thickness of the work cloth to be sewn is corrected according to “thick”, “normal”, and “thin”. The coefficient k1 is set to “2.5”, “2.0”, and “1.2”. FIG. 2 (c) is a table in which the relationship between the correction method and the correction coefficient k2 is set in advance, and when “bottom stitching” is possible in the area of the partial pattern of the next color to be sewn next, for example, The correction coefficient k2 = 1.5 is set to, for example, the correction coefficient k2 = 1.2 when the underlay stitching is not possible and “temporary sewing” is performed in an area other than the embroidery area where the embroidery pattern is sewn.

  Here, “under-stitching” means that the inside of the embroidery sewing area is roughly sewed before embroidery sewing in order to prevent the work cloth from shrinking or to give an appropriate bulge (three-dimensional effect) to the embroidery pattern. Is. For example, as shown in FIG. 4, before the partial pattern 12 is sewn, the area of the partial pattern 12 is roughly sewn. Further, “provisional sewing” means that sewing is performed so that the operator can easily cut and remove the stitches. For example, as shown in FIG. 5, sewing is performed so that a seam can be easily cut and removed at a place away from the embroidery pattern 1.

  Here, whether or not it is suitable for underlay sewing is determined based on the size (area) of the embroidery area of the partial patterns 11 to 15 to be sewn next. That is, in the case of the embroidery pattern 1, it is determined that the green partial pattern 13 and the black partial pattern 15 are not suitable for underline stitching because the size (area) of the embroidery area is small, and the red partial pattern 12 and the blue partial pattern 14 In this case, temporary stitching is set instead of the next color undercut stitching.

  Embroidery is performed in the order of yellow, red, green, blue, and black by the amount of used yarn obtained by multiplying the basic used yarn amount of each partial pattern 11-15 calculated by the correction coefficients k1, k2 as shown in the table of FIG. By dyeing or coloring the thread, the embroidery thread 2 (multi-colored embroidery thread) for the embroidery pattern 1 that does not require thread replacement can be obtained.

  FIG. 3 is a diagram for explaining the dyeing or coloring state of the embroidery thread 2, and for the convenience of explanation, the length direction is reduced. The embroidery thread 2 includes a yellow portion 11A for sewing the yellow partial pattern 11, a red portion 12A for sewing the red partial pattern 12, and a green color according to the sewing order of the partial patterns 11 to 15 for each color of the embroidery pattern 1. The green portion 13A for sewing the partial pattern 13, the blue portion 14A for sewing the blue partial pattern 14, and the black portion 15A for sewing the black partial pattern 15 are dyed or colored in this order. The blue portion 14A and the black portion 15A are not shown.

11A of yellow parts are comprised by the essential sewing part 11a for sewing the yellow part pattern 11, the omissible pattern part 11b, the underlay sewing, or the temporary sewing part 11c. Similarly, the red portion 12A next to the yellow portion is composed of an essential sewing portion 12a, an optional pattern portion 12b, an undercut stitch or a temporary stitch portion 12c for first sewing the red portion pattern 12, and the next green portion. Similarly, 13A is composed of an essential sewing portion 13a, an omissible pattern portion 13b, an undercut stitch or a temporary sewing portion 13c for first sewing the green partial pattern 13. The same applies to the blue portion 14A and the black portion 15A. Here, the essential sewing is the part that is absolutely necessary to sew the partial pattern (the sewing of the essential part of the partial pattern), and the omissible pattern is a part of the partial pattern omitted. This is the part that has little effect on the pattern shape even when sewing.
The embroidery thread 2 is constituted by a plurality of sets of dyeing or coloring as described above so that a plurality of embroidery patterns 1 can be sewn.

  In this way, the embroidery thread 2 is preliminarily arranged according to the sewing order of the plurality of partial patterns 11 to 15 so that the embroidery pattern 1 composed of the plurality of partial patterns 11 to 15 of different colors can be embroidery sewn with one thread. In addition, since one thread is dyed or colored by the amount of thread used for the partial pattern calculated from the embroidery data of the partial pattern, when sewing the embroidery pattern 1 of a plurality of colors, a plurality of thread spools are exchanged. It becomes unnecessary and the sewing time of the embroidery pattern 1 can be shortened. Further, since the amount of thread used for each of the partial patterns 11 to 15 of the embroidery thread 2 is previously set and colored by a predetermined thread amount, the thickness of the work cloth and the stitch pitch vary. However, the thread used to sew each of the partial patterns 11 to 15 does not run out during the sewing.

  Next, the thread piece 6 wound with the embroidery thread 2 that does not require thread replacement and the wireless tag 7 provided on the thread piece 6 will be described. FIG. 6 is a front view of the thread spool 6, and FIG. 7 is a side view of the thread spool 6. FIG. 8 is a block diagram showing an electrical configuration of the wireless tag 7.

  As shown in FIGS. 6 and 7, an embroidery thread 2 that is an embroidery thread 2 that does not require thread replacement and can sew a plurality of embroidery patterns 1 is wound around the thread spool 6. The yarn with the slower order is wound so that it is on the inside. The thread spool 6 has a substantially cylindrical thread spool main body 61, circular side surfaces 62 are formed at both ends of the thread spool main body 61, penetrate the inside of the thread spool main body 61, and open to the center of the circular side surface 62. A shaft hole 63 is provided.

  As shown in FIG. 7, the wireless tag 7 is embedded in one circular side surface 62 of the yarn spool 6. The wireless tag 7 includes a coiled antenna 71 attached in a spiral around the shaft hole 63, and an IC circuit unit 72 connected to one end of the antenna 71.

Next, the electrical configuration of the wireless tag 7 will be described.
As shown in FIG. 8, the wireless tag 7 includes an antenna 71 and an IC circuit unit 72. The antenna 71 transmits and receives signals in a non-contact manner by radio waves with an antenna (not shown) of a tag reader / writer 100 (see FIG. 13) described later. The IC circuit unit 72 includes a rectification unit 73 connected to an antenna 71, a power supply unit 74 connected to the rectification unit 73, a clock extraction unit 75 connected to the antenna 71, a modulation / demodulation unit 76 connected to the antenna 71, and a clock. A control unit 77 connected to the extraction unit 75 and the modem unit 76 and a memory unit 78 connected to the control unit 77 are provided. Power is supplied from the power supply unit 74 to each unit.

  The rectifier 73 rectifies the carrier wave received by the antenna 71. The power supply unit 74 accumulates electric energy of the carrier wave rectified by the rectification unit 73 and uses it as a drive power source. The clock extraction unit 75 extracts a clock signal from the carrier wave received by the antenna 71 and supplies the clock signal to the control unit 77. The modem unit 76 demodulates the received signal transmitted from the tag reader / writer 100 on the carrier wave and received by the antenna 71, and outputs the modulated carrier wave to the antenna 71 based on the response signal from the control unit 77. In this manner, the wireless tag 7 can transmit and receive information wirelessly with the tag reader / writer 100.

  The control unit 77 decodes the reception signal demodulated by the modem unit 76, generates a reply signal based on the information signal stored in the memory unit 78, sends a reply signal via the modem unit 76, etc. Control the basic operation of. The memory unit 78 (corresponding to “storage means”) has a thread spool identification number for identifying the thread spool 6, an embroidery pattern number for specifying the embroidery pattern, size information indicating the size of the embroidery pattern, and a plurality of thread colors. Information (arranged in the sewing order), sewing order information (for example, color information arranged in the sewing order of yellow, red, green, blue, and black), used thread amount information for each color calculated from the embroidery data, Thread consumption information (for example, the number of embroidery patterns sewn, thread consumption of each color for embroidery patterns in the middle of sewing, etc.), pattern number information indicating the number of embroidery patterns that can be sewn, set cloth thickness of the work cloth, etc. It is remembered. The thread consumption information is updated to the latest information as the sewing progresses.

  As described above, since the thread tag 6 around which the embroidery thread 2 is wound is provided with the wireless tag 7 as a storage means, information such as thread color information, sewing order information, and used thread amount information of the embroidery thread 2 is provided. Information can be stored in a readable and writable manner.

Next, the sewing machine M that can be sewn using the embroidery thread 2 will be described.
As shown in FIG. 9, the embroidery sewing machine M includes a bed portion 8, a leg column portion 9 erected from the right end portion of the bed portion 8, and an arm portion extending leftward from the upper end of the leg column portion 9. 10 and.
Below the needle plate (not shown) of the bed portion 8, a feed dog vertical movement mechanism (not shown) that moves the feed dog up and down, a feed dog forward and backward movement mechanism (not shown) that moves the feed dog back and forth, A hook mechanism (not shown) for detachably attaching the lower thread bobbin, an automatic thread trimming mechanism (not shown) for cutting at least the upper thread, and the like are provided.

  An embroidery device 20 for embroidery sewing using an embroidery frame 21 that stretches and holds a work cloth (not shown) is detachably attached to the free arm portion of the bed portion 8. The embroidery device 20 is housed in the main body cover 22 and is housed in the carriage cover 23 and an X direction drive mechanism and an X direction drive motor 93 (see FIG. 13) that move the embroidery frame 21 in the X direction (left and right direction). In addition, a Y-direction drive mechanism that moves the embroidery frame 21 in the Y direction (front-rear direction), a Y-direction drive motor 94 (see FIG. 13), and the like. A color liquid crystal display 24 is provided on the front surface of the pedestal 9, and a menu screen, a pattern selection screen, an embroidery pattern, and the like are displayed on the liquid crystal display 24.

  On the front surface of the liquid crystal display 24, an operation touch panel 24a in which a plurality of touch keys made of transparent electrodes are provided in a matrix is provided. Therefore, when a pattern selection or a sewing function is instructed, the user presses a corresponding touch key with his / her finger, thereby selecting a desired pattern from a plurality of sewing patterns displayed on the liquid crystal display 24 and executing the sewing function. Instructions are possible.

The arm portion 10 includes a main shaft (not shown) extending in the left-right direction that is rotationally driven by a sewing machine motor 91 (see FIG. 13), a hand pulley (not shown) that can rotate the main shaft by manual operation, and a sewing needle 33 at the lower end. A needle bar raising / lowering mechanism (not shown) that raises and lowers the needle bar 25 with the driving force of the main shaft;
An elevating mechanism 40 (see FIGS. 10 and 11) that elevates and lowers the presser bar 41 with the presser foot 42 attached to the lower end, and a needle bar swinging mechanism (shown in the figure) that swings the needle bar 25 in a direction perpendicular to the cloth feeding direction. Abbreviation) etc. are provided.

  An opening / closing cover 26 is attached to the upper part of the arm part 10 over the entire length of the arm part 10. The opening / closing cover 26 is pivotally supported by the arm portion 10 so as to be opened and closed as shown in FIG. 9 and in a state where the upper surface of the arm portion 10 is closed. When the opening / closing cover 26 is opened, a thread spool storage section 28 for storing the thread spool 6 around which the embroidery thread 2 is wound is formed in the vicinity of the center of the upper surface of the arm section 10. A spool pin 29 for rotatably supporting the yarn spool 6 is provided, and the spool pin 29 extends in parallel with the arm portion 10 from the right end of the yarn spool storage portion 28.

  A needle bar 25 to which a sewing needle 33 is attached is provided on the head of the arm unit 10. The arm unit 10 guides the embroidery thread 2 pulled out from the thread spool 6 to the sewing needle 33 via a thread path such as a thread tension mechanism (not shown), a thread take-up spring (not shown), a balance (not shown), and the like. A thread guide groove 30 and an upper thread amount detection device 80 (see FIG. 12) are provided.

  The arm unit 10 is provided with a tag reader / writer 100 (see FIG. 13) that reads information on the wireless tag 7 of the yarn spool 6. A start / stop switch 31 for instructing the start and stop of the sewing operation and a plurality of operation switches 32 for instructing various sewing operations are provided on the front surface of the arm unit 10.

Next, the lifting mechanism 40 and the cloth thickness detection device will be described.
As shown in FIGS. 10 and 11, the elevating mechanism 40 elevates and lowers a presser bar 41 supported by the sewing machine frame on the rear side of the needle bar 25 and a presser foot 42 attached to the lower end thereof. Is. The elevating mechanism 40 includes a rack forming member 43 that is externally fitted to the upper end portion of the presser bar 41, a retaining ring 41 a fixed to the upper end of the presser bar 41, and a rack for elevating the presser bar 41. A presser bar elevating pulse motor 45 (corresponding to an elevating actuator) fixed to the sewing machine frame on the right side of the forming member 43, a drive gear 45a connected to the output shaft thereof, and an intermediate gear meshing with the drive gear 45a A gear 46, a presser bar holder 47 fixed to the middle part in the height direction of the presser bar 41, and a presser spring 48 externally mounted on the presser bar 41 between the rack forming member 43 and the presser bar holder 47 are provided. . A guide portion 44 that guides the presser bar 41 so as to be movable up and down is also provided.

  The intermediate gear 46 integrally has a small-diameter pinion 46 a, and the pinion 46 a meshes with a rack (not shown) of the rack forming member 43. In addition, a presser lifting lever 49 for raising and lowering the presser bar 41 by manual operation is provided in the vicinity of the lifting mechanism 40. One end of the presser lifting lever 49 is pivotally supported by a pivot pin 49a. When the presser lifter lever 49 is pushed up so as to rotate counterclockwise, the protrusion 47a of the presser bar holder 47 is pushed up and the presser bar 41 is moved upward by a predetermined distance. To do.

  When the presser bar 41 and the presser foot 42 are driven up and down by the presser bar lifting pulse motor 45, when the presser bar lifting pulse motor 45 is driven, the driving force is transmitted to the intermediate gear 46 and the pinion 46a and the rack forming member. 43 is moved up and down, and the presser bar 41 is moved up and down via the elastic force generated in the presser spring 48, and the presser foot 42 can be moved up and down in the range of the raised position and the lowered position.

  A potentiometer 50 for detecting the thickness of the work cloth to be sewn is provided immediately on the left side of the presser bar 41. The lever portion 50a extending rightward from the pivot shaft of the potentiometer 50 abuts on the upper surface of the projecting portion 47b projecting to the left of the presser bar holder 47, and rotates according to the up and down movement of the presser bar 41 and the presser bar holder 47. And the resistance value is changed. The height of the presser foot 42 is calculated by calculating the difference between the resistance value when the work cloth is present under the presser foot 42 and the resistance value when there is no work cloth by the control device C (see FIG. 13). Difference, that is, the thickness of the work cloth is detected. Thus, the potentiometer 50 and the control device C constitute a “cloth thickness detecting means”.

  Next, a thread consumption detecting device 51 that detects the amount of the embroidery thread 2 (upper thread) supplied from the thread spool 6 and consumed for embroidery sewing will be described. As shown in FIG. 12, the yarn consumption detecting device 51 provided in the arm portion 4 is provided in the middle of the yarn path from the yarn piece 6 to the yarn tension mechanism (not shown). The thread consumption of the embroidery thread 2 fed out from is detected.

  As shown in FIG. 12, an encoder 53 is attached to a mounting base 52 of the yarn consumption detecting device 51 via a screw 54, and a first gear 55 is fixed to a rotating shaft 53 a of the encoder 53. The second gear 56 that meshes with the first gear 55 is rotatably supported on the mounting base 52 by a rotating shaft 56a. A rotation roller 57 is fixed to the second gear 56 and is configured to rotate integrally with the second gear 56.

  The swing lever 60 is pivotally supported by a pivot shaft 58 fixed to the mounting base 52. The swing lever 60 includes a first arm portion 60a, a second arm portion 60b, and a third arm portion 60c. Are formed respectively. A tension spring 59 is stretched over the first arm portion 60a and the mounting base 52, and the swing lever 60 is always urged to rotate counterclockwise. One end portion of a substantially triangular roller holder 64 is rotatably connected to the second arm portion 60b by a pivot shaft 58b, and the rotating roller 57 is inserted into a long hole formed in the other end portion of the roller holder 64. ing.

  In the vicinity of the other end of the roller holder 64, a rubber driven roller 65 is rotatably supported by a pivot shaft 64 a fixed to the roller holder 64, and the rubber driven roller 66 is fixed to the roller holder 64. The pivot shaft 64b is rotatably supported. Accordingly, the pair of driven rollers 65 and 66 are urged in the direction of the arrow 67 through the roller holder 64 by the urging force of the swing lever 60 in the counterclockwise direction and pressed against the rotating roller 57.

  The third arm portion 60c is operatively connected to the presser bar 41, and when the presser foot lifting lever 49 is operated to raise the presser foot 42 to the raised position, the swing lever 60 has a spring force of the tension spring 59. The pair of driven rollers 65 and 66 are separated from the rotating roller 57 respectively.

  When the embroidery thread 2 is hung from the thread spool 6 to the thread path, when the presser foot lifting lever 49 is operated to raise the presser foot 42 to the raised position, the pair of driven rollers 65 and 66 are separated from the rotating roller 57, respectively. . At this time, the thread tension plate (not shown) of the thread tension mechanism is also opened, and the embroidery thread 2 can be threaded. In this state, when the embroidery thread 2 is applied to a predetermined thread path, the embroidery thread 2 is applied between the pair of driven rollers 65 and 66 and the rotation roller 57. Next, when the presser foot lifting lever 49 is operated to lower the presser foot 42 to the lowered position, the upper thread is pinched by the pair of driven rollers 65 and 66 and the rotating roller 57.

  Here, when the embroidery thread 2 is unwound by embroidery sewing, the rotation roller 57 rotates accordingly, and the rotation is transmitted to the encoder 53 via the second gear 56 and the first gear 55. By calculating the rotation amount of the rotary roller 57 from the rotation amount detected by the encoder 53, the yarn consumption amount of the embroidery thread 2 fed out is detected. This yarn consumption detection device 51 corresponds to “yarn consumption detection means”.

Next, a control system of the sewing machine M capable of embroidery sewing will be described.
As shown in FIG. 13, the control device C includes a microcomputer including a CPU 81, a ROM 82, a RAM 83, and an electrically rewritable nonvolatile EEPROM 84, and an input I connected to the microcomputer via a data bus or the like. / F85, output I / F86, and the like.

  A start / stop switch 31, an encoder 53, a touch panel 24a, a potentiometer 50, and a tag reader / writer 100 are connected to the input I / F 85, respectively. The output I / F 86 drives a feed amount adjusting pulse motor 90 for adjusting the feed amount of the work cloth by the feed dog, a sewing machine motor 91, and a needle bar swinging mechanism that swings the needle bar 25 in the left-right direction. Needle swing pulse motor 92, liquid crystal display 24, X-direction drive motor 93 that drives a left-right movement mechanism that moves the embroidery frame 21 in the X direction, and Y-direction drive that drives a back-and-forth movement mechanism that moves the embroidery frame 21 in the Y direction The motor 94, the tag reader / writer 100, the pulse motor 45 of the lifting mechanism 40, and the like are electrically connected via the drive circuits 101 to 108, respectively. An external storage device 88 such as a CD-ROM drive can be connected to the connector 87.

The ROM 82 is displayed on the liquid crystal display 24, a control program for sewing a practical pattern, a control program for sewing embroidery based on the embroidery data, a display control program for displaying various information on the liquid crystal display 24, and the like. A pattern selection control program for selecting an arbitrary sewing pattern from among a plurality of sewing patterns, a thread amount correction processing control program to be described later, and the like are stored in advance.

  In the EEPROM 84, embroidery data of a plurality of sewing patterns is stored in advance, and when the sewing process is performed by the sewing machine M, the embroidery data of the selected sewing pattern is read from the EEPROM 84 and stored in the data memory of the RAM 83. Stored. The RAM 83 is provided with a data memory in which embroidery data for sewing is read from the EEPROM 84 and stored, and various work memories.

  Next, embroidery sewing control and thread amount correction processing unique to the present plan executed by the control device C will be described with reference to the flowcharts of FIGS. A program for executing this yarn amount correction processing is stored in the ROM 82 in advance. In the figure, Si (i = 1, 2, 3...) Indicates each step.

  When the embroidery frame 21 holding the work cloth to be sewn is set in the embroidery device 20, the embroidery pattern 1 is selected by pressing the touch panel 24a on the pattern selection screen displayed on the liquid crystal display 24. The embroidery data of the pattern 1 is read from the EEPROM 84 and developed in the work memory of the RAM 83 (S1), and the yellow partial pattern 11 to be sewn first is displayed on the liquid crystal display 24. Here, the information accompanying the embroidery data includes the colors of the plurality of partial patterns 11 to 15, the sewing order of the plurality of partial patterns 11 to 15, the expected amount of yarn used for each of the partial patterns 11 to 15, and the information for the partial patterns 11 to 15. The specification data of the omissible pattern (parts other than the essential part), the set cloth thickness data, and the like are included.

  Next, the yellow portion pattern 11 is sewn (S2), and the amount of yarn consumed in the yellow portion of the embroidery thread 2 consumed for sewing the yellow portion pattern 11 is detected based on the detection signal of the encoder 53. It is stored in the memory of the RAM 83 while being updated (S3). S2 and S3 are repeated until the sewing of the essential part of the yellow pattern 11 is completed (S4; No). When the sewing of the essential part of the yellow portion pattern 11 is completed (S4; Yes), the thread amount correction process based on the embroidery data is executed (S5) (see FIG. 15).

  After the thread amount correction process using the embroidery data, it is determined whether or not the last partial pattern (black partial pattern) has been sewn (S6). If the determination is No, the process proceeds to S2 and S2 to S6 are performed. Repeatedly, the red, green, blue and black partial patterns 12 to 15 are sequentially sewn, and when the last partial pattern (black partial pattern) has been sewn (S6; Yes), the embroidery pattern 1 The embroidery sewing is completed and this control is finished. When the control is finished, the latest data of the yarn consumption is stored in the RAM 83 in the memory.

  Next, thread amount correction processing for correcting the planned consumption thread amount by changing the contents of sewing according to the thread remaining amount when sewing of essential portions of each partial pattern is completed will be described with reference to FIG. The thread amount correction process is performed when the sewing of essential portions of the partial patterns 11 to 15 is finished. However, in the description of FIG. 15, a case where a yellow part pattern is sewn with a yellow part of the embroidery thread 2 will be described as an example.

  As shown in FIG. 15, when the sewing of the essential portion of the yellow portion pattern 11 is completed and the yarn amount correction process is started, the used yarn amount (basic used yarn amount) which is the length of the yellow portion of the embroidery thread 2 Then, the remaining amount of yarn in the yellow portion is calculated from the yarn consumption used in sewing the essential portion of the yellow portion pattern 11 (S11). Specifically, the yarn remaining amount is calculated by subtracting the yarn consumption from the used yarn amount. Next, based on the embroidery sewing data of the non-sewn part other than the essential part of the yellow portion pattern 11, a planned consumed thread amount that is a thread amount necessary for sewing the non-sewn part is calculated (S12).

  Next, it is determined whether or not the remaining amount of yarn is “0” (S13). When the remaining amount of yarn is “0” (S13; Yes), all the yellow portions of the embroidery thread 2 are consumed. Since the color of the embroidery thread 2 is switched to the red color for sewing the red partial pattern 12 in the next sewing order, this thread amount correction process is completed, and the process returns to S6 in FIG.

  When the remaining amount of yarn is not “0” (S13; No), it is determined whether the remaining amount of yarn is equal to the planned amount of consumed yarn (S14). When the determination is Yes, the yellow pattern 11 is not sewn. The part is sewn (S15), and then the process returns to S11. When the determination in S14 is No, the yellow portion of the yarn is left or insufficient, and therefore in the next S16, it is determined whether or not the remaining yarn amount is larger than the planned consumed yarn amount.

  If the remaining amount of yarn is less than the planned amount of consumed yarn (S16; No), there is a possibility that the yellow portion of the yarn will be insufficient, so an omissible pattern is sewn (S17). In other words, if an unsewn portion of the yellow portion pattern 11 is sewn as instructed by the embroidery data, the yellow portion of the thread is insufficient and the next color is changed to the red thread. Therefore, for example, the embroidery data set for double stitching that sews the same part twice is corrected to embroidery data that can save thread, such as embroidery data that can be saved once. Sewing. Here, the omissible pattern is a part that has little influence on the pattern shape even if a part of the partial pattern is omitted and sewing is performed. In order to save an omissible pattern while saving thread, in addition to changing the above-mentioned double stitching to single-sewing, the satin sewing may be changed to running stitching, or the sewing range may be reduced and sewn. Good. When the omissible pattern is sewn, the value of the remaining thread amount and the expected consumed yarn amount fluctuates, so that the process returns to S11 and S11 and subsequent steps are repeated. S14 and S16 correspond to “collating means”, and S17 corresponds to “embroidery data changing means”.

  When the remaining amount of yarn is larger than the planned amount of consumed yarn (S16; Yes), there is a possibility that the yellow portion of the yarn may remain, so the processing from S18 is performed. First, it is determined whether or not there is an unsewn portion of the yellow pattern 11 (S18). If there is an unsewn portion (S18; Yes), the unsewn portion is sewn (S19), and the unsewn portion is sewn. Is performed, the remaining yarn amount of the yellow portion yarn and the expected consumed yarn amount fluctuate, so the process returns to S11 and the processes after S11 are repeatedly executed.

  When the remaining yarn amount is larger than the planned consumed yarn amount (S16; Yes) and there is no unsewn portion (S18; No), the yellow portion pattern 11 has been sewn, but the yellow portion of yarn remains. Therefore, the processing of S20 to S22 for consuming the yellow portion of the thread is executed before the red portion pattern 12 that is the next sewing order is sewn.

  If there is no unsewn portion (S18; No), it is determined whether or not underlay sewing can be performed next (S20). If underprint sewing is possible (S20; Yes), underprint sewing is performed within the sewing area of the embroidery pattern 1. (S21), and then the process returns to S11. When the undercut sewing is performed, the remaining amount of yarn of the yellow portion and the expected amount of consumed yarn fluctuate, so that the process returns to S11 and the processes after S11 are repeatedly executed. On the other hand, when the underlay sewing cannot be performed (S20; No), in order to consume the yellow portion of the thread, temporary sewing (discarded sewing) is performed outside the sewing area of the embroidery pattern 1 (S22), and then the process returns to S6. Note that S21 corresponds to “underlay sewing execution means”, and S22 corresponds to “provisional sewing execution means”.

Here, with regard to underlay sewing, the case where the yellow portion pattern 11 has been sewn has been finished will be described with reference to FIG.
The underlaying portions 11a and 11b in the embroidery area of the red portion pattern 12, which is the next sewing order, are undercut with the yellow portion thread, and all the yellow portion yarn is consumed. When the undercut sewing parts 11a and 11b are sewn with the yellow part thread, if the red part pattern 12 to be sewn next is sewn with the red part thread, the yellow part thread will be hidden under the red part thread. The appearance of the red partial pattern 12 is not affected. In this case, underlay sewing is possible.

  Next, the temporary sewing will be described with reference to FIG. 5 by taking as an example a case where the red portion pattern 12 has been sewn but the red portion of the thread remains. Like the green partial pattern 13, a partial pattern having a small sewing area may protrude from the sewing area and is not suitable for underlay sewing, and therefore, temporary sewing is performed. When the sewing of the entire sewing area of the red pattern 12 has been completed, but the red part of the thread remains, it moves outside the embroidery area, the temporary sewing part 12a is temporarily sewn, and all the red part of the thread is consumed. The Since the temporary sewing portion 12a is cut off after the sewing of the embroidery pattern 1 is completed, it does not affect the quality of the embroidery pattern 1. The control device C including the control program for the yarn amount correction process (S5, FIG. 15) corresponds to “yarn amount correction means”.

  As described above, the yarn amount correction process is based on the result of collating the yarn consumption detected by the yarn consumption detection device 51 with the used yarn amount based on the embroidery data for each partial pattern. The remaining amount of thread currently being sewn is calculated, and the planned amount of thread that is still needed to sew unsewn parts is corrected according to the remaining amount of thread. It is possible to prevent the embroidery thread of that color from being used up before it is finished.

  In the thread amount correction process, when the remaining thread amount and the planned consumed thread amount are equal, the unsewn portion is sewn without correction, but when the remaining thread amount is less than the scheduled consumed thread amount, the omissible pattern When sewing is performed with the embroidery data corrected (see S17 in FIG. 15), when the remaining thread amount is larger than the expected amount of consumed thread, undercut sewing or temporary sewing is executed by undercut sewing execution processing (see S21 in FIG. 15). Since the correction is performed so that the temporary sewing by the processing (see S22 in FIG. 15) is performed, the embroidery thread of the color is insufficient or surplus before the sewing of the partial pattern currently being sewn is completed. It can be surely prevented.

  Next, “thread amount correction processing based on yarn density” in which the yarn density of the embroidery pattern is corrected according to the cloth thickness in the yarn amount correction processing executed by the control device C will be described with reference to FIGS. 16 and 17. To do. In addition, the same step number is attached | subjected about the same step as the flowchart shown in FIG. 14 of Example 1, and description is abbreviate | omitted. In addition, this correction processing corrects the thread density of the embroidery pattern at the stitched portion.

  As shown in FIG. 16, after the embroidery data is read in S1, the yarn amount correction process based on the yarn density is executed (S30). The yarn amount correction processing based on the yarn density is shown in the flowchart of FIG. When this process is started, the cloth thickness is first detected by the detection signal from the potentiometer 50 (S31). At this time, by driving and controlling the pulse motor 45 of the elevating mechanism 40, the presser bar 41 is driven downward to bring the presser foot 42 into contact with the upper surface of the work cloth, and from the detection signal of the potentiometer 50 at this time, Thickness is detected.

  Next, it is determined whether or not the detected cloth thickness is substantially equal to the set cloth thickness (S32). If the determination is Yes, the process returns to S2 in FIG. 16, and if the determination in S32 is No, it is detected. It is determined whether the fabric thickness is within the yarn density correction range (S33). In this case, for example, α = detected fabric thickness / set fabric thickness, and when α ≦ 2.0, it is determined that the yarn density can be corrected, and the process proceeds to S34, and when α> 2.0, the yarn is It is determined that the density correction is not possible, and an error message is displayed on the liquid crystal display 24 in S37.

  In S34, the yarn density correction is executed as follows. In the case of 2.0 ≧ α> 1.0, the thread density of the tail stitch is corrected to be low, and the expected amount of used thread is calculated from the number of stitches after the correction. Here, β = schedule used thread amount / thread thread amount for each color, and when β> 1.2, the thread density of the tail stitch is corrected to a low value, and the expected used thread amount is calculated from the number of stitches after the correction. Repeat the calculation. On the other hand, if 1> α, the thread density of the tail stitch is corrected to be high, and the expected amount of thread used is calculated from the corrected number of stitches. If β <0.8, the thread density of the tail stitch is calculated. Repeat the process of calculating the expected amount of yarn from the corrected number of stitches. The corrected yarn density data is stored in the RAM 83 memory.

  As a result of the above-described yarn density correction, when β is in the range of 0.8 to 1.2, the yarn density correction processing is completed and the process proceeds to S35, the expected amount of used yarn is calculated (S35), and then the above processing Is determined for all the thread colors (S36). If the determination is No, the process returns to S34, and if the determination in S36 is Yes, the process returns to S2 in FIG.

  As described above, in order to correct the thread density of the tatami stitch using the above-mentioned α and β as parameters, the expected use thread amount of each color is adapted to the thread amount of each color embroidery thread held in the thread spool 6. Therefore, it is possible to perform embroidery sewing without resolving a significant excess or deficiency of the embroidery thread for each color and without causing waste of the embroidery thread. Further, the yarn density of the satin stitch portion of the embroidery pattern may be corrected.

  Even when the size of the embroidery pattern is enlarged or reduced from a predetermined standard size, the yarn amount correction based on the yarn density may be executed.

  Thus, since the cloth thickness detecting device including the potentiometer 50 is provided, the cloth thickness of the work cloth can be detected, and the yarn amount correction processing is performed according to the cloth thickness of the work cloth detected by the cloth thickness detecting device. By changing the yarn density of the embroidery pattern, the amount of yarn consumed can be changed as appropriate.

  Next, “process in the case of a yarn tag with a wireless tag” in the yarn amount correction control executed by the control device C will be described with reference to FIGS. 18 and 19. Note that substantially the same steps as those in the flowchart shown in FIG. 14 of the first embodiment are denoted by the same step numbers and description thereof is omitted. As shown in FIG. 18, after reading the embroidery data in S1, the processing (see FIG. 19) in the case of the thread tag with the wireless tag is executed in S40.

  As shown in FIG. 19, first, various pieces of thread information such as thread color, sewing order, and used thread amount stored in the memory unit 78 of the wireless tag 7 provided in the thread spool 6 are obtained from the tag reader / writer 100. (S41). Next, the embroidery data associated information stored in the EEPROM 84 and the thread information read from the wireless tag 7 are collated (S42), and it is determined whether or not these pieces of information match (S43). If the determination is No, an error message is displayed on the liquid crystal display 24 in S44. If the determination in S43 is Yes, the thread information read from the wireless tag 7 is stored in the memory of the RAM 83 (S45), and then the process proceeds to S2 in FIG.

  Since the processes of S2 to S6 are the same as those in FIG. Next, when the determination in S6 of FIG. 18 is Yes, the information stored in the memory of the RAM 83 in the next S7 is written to the wireless tag 7 by the tag reader / writer 100, and then the control ends.

  Thus, when the wireless tag-attached thread spool 6 is employed, whether or not the embroidery pattern to be sewn is matched with the thread spool 6 used for sewing the embroidery pattern by executing the process of S40. Since it can be reliably discriminated, it is possible to reliably prevent useless embroidery sewing using the wrong thread spool 6.

  In addition, at the end of sewing, various information including the latest information such as the thread consumption amount and the remaining thread amount may be written in the wireless tag 7. In this case, the latest information such as the amount of thread consumption can be read from the wireless tag 7 and utilized when performing embroidery sewing using the thread piece 6 next time.

  Also, the wireless tag 7 has a thread spool identification number for identifying the thread spool 6, an embroidery pattern number for specifying the embroidery pattern, size information indicating the size of the embroidery pattern, pattern number information indicating the number of embroidery patterns, and setting of the work cloth. Various information such as the cloth thickness may also be stored.

Next, a modified example in which the first, second, and third embodiments are partially changed will be described.
1) In the above-described embodiment, the case where the embroidery thread 2 is colored so that the same embroidery pattern can be sewn multiple times is described as an example. However, the embroidery thread 2 is colored so that a plurality of different embroidery patterns can be sewn continuously. May be.

2) In the above embodiment, the case where the embroidery thread 2 is colored so that the boundary between each color can be distinguished, such as the yellow portion 11A, the red portion 12A, the green portion 13A,. The embroidery thread 2 may be dyed or colored so that the boundary between the colors is inconspicuous.

3) In the above embodiment, as the thread amount correction processing when the yellow portion 11A colored in yellow of the embroidery thread 2 is surplus, the thread remaining in the yellow portion 11A is obtained by performing underlay sewing processing or temporary sewing processing. The case where the amount is consumed has been described as an example. However, the present invention is not limited to this, and the remaining amount of thread in the yellow portion 11A can be reduced by performing the overlap sewing process within the sewing range of the already-sewn yellow portion pattern 11. You may make it consume.
4) In addition, those skilled in the art can implement the present invention by adding various modifications without departing from the spirit of the present invention, and the present invention includes such modifications. .

It is explanatory drawing of the embroidery pattern which concerns on the Example of this invention. (A) is a chart of the color of the partial pattern, the number of stitches, the stitch pitch, and the basic thread use amount, (b) is a chart showing the relationship between the fabric thickness and the correction coefficient k1, and (c) is the next color It is a graph which shows the relationship between punch and temporary sewing, and the correction coefficient k2. It is explanatory drawing explaining the some dyeing | staining or coloring part of an embroidery thread | yarn. It is explanatory drawing explaining underlay sewing. It is explanatory drawing explaining temporary stitching. It is a front view of a thread spool. It is a side view of a thread spool. It is a block diagram which shows the structure of a wireless tag. 1 is an overall perspective view of a sewing machine capable of embroidery sewing. It is a front view of the raising / lowering mechanism which raises / lowers the presser bar. It is a side view of the said raising / lowering mechanism. It is a front view of a yarn consumption detection device. It is a block diagram of the control system of the sewing machine. It is a flowchart of embroidery sewing control and thread amount correction processing. It is a flowchart of the thread | yarn amount correction process by the embroidery data of FIG. FIG. 15 is a diagram corresponding to FIG. 14 according to the second embodiment. It is a flowchart of the yarn amount correction process by the yarn density of FIG. FIG. 15 is a diagram corresponding to FIG. 14 according to the third embodiment. It is a flowchart of the process in the case of the thread tag with a wireless tag of FIG.

Explanation of symbols

2 Embroidery thread 6 Yarn piece 7 Wireless tag M Sewing machine C Controller 50 Potentiometer 53 Encoder 82 ROM
83 RAM
84 EEPROM
100 Tag reader / writer

Claims (12)

  Based on the sewing order of the partial patterns when sewing an embroidery pattern including a plurality of partial patterns including partial patterns of different colors, and the amount of thread used for the partial patterns calculated from the embroidery data of the partial patterns The embroidery thread is characterized in that the color of the partial pattern is dyed or colored by the amount of thread used according to the sewing order.   2. The embroidery thread according to claim 1, wherein the used thread amount is set longer by a predetermined thread amount.   3. A thread spool comprising the embroidery thread according to claim 1 wound around a thread spool main body.   4. The yarn spool according to claim 3, further comprising storage means for storing at least one of thread color information, sewing order information, and used thread amount information of the embroidery thread in a readable and writable manner.   The yarn spool according to claim 4, wherein the storage unit includes a wireless tag capable of transmitting and receiving the information by wireless communication. In an embroidery sewing machine having an embroidery frame transfer mechanism for independently transferring an embroidery frame holding a work cloth used for embroidery sewing in two predetermined directions based on embroidery data of an embroidery pattern,
A thread consumption amount for detecting, for each partial pattern, a thread consumption amount by sewing of the embroidery thread according to claim 1 or 2 or the embroidery thread supplied from the thread spool according to any one of claims 3 to 5. Detection means;
Collating means for collating the yarn consumption detected by the yarn consumption detecting means with the used yarn amount based on the embroidery data for each partial pattern;
Based on the collation result of the collating means, the yarn amount correcting means for calculating the remaining amount of thread that has not been consumed of the used yarn amount and correcting the planned consumed yarn amount at the unsewn location according to the remaining amount of yarn;
A sewing machine capable of sewing embroidery.   The sewing machine capable of embroidery sewing according to claim 6, wherein the thread amount correcting means includes embroidery data changing means for changing a part of the embroidery data.   8. The embroidery sewing according to claim 6, wherein the thread amount correction means includes understrip sewing execution means for performing understrip sewing in a region where the embroidery pattern is sewn on the work cloth. 9. Possible sewing machine.   The embroidery sewing according to any one of claims 6 to 8, wherein the thread amount correction means includes temporary sewing execution means for performing temporary sewing outside an area where the embroidery pattern is sewn on the work cloth. Sewing machine. A cloth thickness detecting means for detecting the cloth thickness of the work cloth;
The thread amount correcting means includes thread density changing means for changing the thread density of the embroidery pattern in accordance with the cloth thickness of the work cloth detected by the cloth thickness detecting means. The embroidery sewing machine described in Crab.   11. The sewing machine capable of embroidery sewing according to any one of claims 6 to 10, wherein the thread consumption amount detection means includes a rotary encoder for detecting a movement amount of the embroidery thread.   The embroidery sewing device according to any one of claims 6 to 11, further comprising: a reader that reads information stored in the wireless tag according to claim 5; and a writer that writes information into the wireless tag. sewing machine.