KR20070089065A - A sewing machine having a sequin sewing apparatus - Google Patents

Abstract

A sewing machine is provided to move a sequin sewing device between an operative position and an evacuated position without stopping a sewing work, thereby reducing the working time. A sewing machine head includes a needle bar unit usable for both sequin sewing and ordinary sewing. A sequin sewing device(1) is installed correspondingly to the needle bar unit, and movable between an operative position where the sequin sewing is performed and an evacuated position where the sequin sewing is not performed. A needle bar control unit inhibits or delays the descending of the needle bar while maintaining the sewing machine in an operating condition, in a first shifting operation of shifting the sequin sewing device from the operative position to the evacuated position or in a second shifting operation of shifting the sequin sewing device from the evacuated position to the operative position. A moving unit(6) moves the sequin sewing device to the evacuated position in the first shifting operation, but moves the sequin sewing device to the operative position in the second shifting operation, while the needle bar control unit inhibits or delays the descending of the needle bar.

Description

Sewing machine with sequin sealing device {A SEWING MACHINE HAVING A SEQUIN SEWING APPARATUS}

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an external view of a multi-head embroidery sewing machine according to one embodiment of the present invention.

Fig. 2 is a left side view showing an example of a sequin sealing device attached to one sewing head in the same embodiment, showing a state in which the sequin sealing device is lowered to an operating position.

3 is a view showing a state in which the sequin sealing device according to the same embodiment is raised to the retracted position.

4 is an enlarged right side view of a part of the sequin transmission mechanism in the sequin sealing apparatus according to the same embodiment.

Fig. 5 is a block diagram schematically showing an example of a control system of embroidery sewing machine according to the same embodiment.

Fig. 6 is a flowchart showing an embodiment in which needle bar jump data is automatically generated based on embroidery data and inserted into the embroidery data.

7 is a diagram showing an example of an embroidery pattern in which sequin stitching and normal embroidery are mixed.

Fig. 8 is a schematic diagram showing the structure of embroidery data corresponding to the embroidery pattern in Fig. 7, (a) is embroidery data before the jump code insertion according to the present embodiment, and (b) is the jump code insertion according to the present embodiment. Later embroidery data.

<Description of the code>

1 sequin sealing device

2 needle case

3 sequin connections

4 mounting base

6 sequin transmission mechanism

9 air cylinder

17 operation blade

20 needles

21 needles

31 embroidery frame

41 CPU (Central Processing Unit)

42 read only memory (ROM)

43 random access memory (RAM)

50 needle jump driver

51 Sequin Driver

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing machine having a sequin sealing device and sealing a sequin to a to-be-sealed body. In particular, the operating position and sequin of the sequin sealing device can be sealed. The present invention relates to a sewing machine that is movable to a retracted position where no sealing is performed.

Background Art Conventionally, a sewing machine having a sequin sealing device and capable of sewing a sequin (sequin) on a to-be-sealed object is known, and Patent Document 1 includes a sequin sealing device in a fine embroidery embroidery machine as described below. In addition, a sewing machine is disclosed that can be performed by combining sequin sealing and embroidery. According to this patent document 1, the sequin sealing device is provided on the left side of the needle | tip needle case which supported several needle bars, and the leftmost needle rod in a needle needle case is used as needle needle (sequin needle needle) for sequin sewing. do. The sequin sealing device is installed so that the needle case can be lifted and lowered. When the sequin is sealed, the sequin sealing device is lowered. When the sequin is not sealed, the sequin sealing device is evacuated to an upper position so as not to interfere with normal embroidery stitching. have.

[Patent Document 1] Japanese Patent Laid-Open No. 2004-167097

The sequin sealing device is provided with a sequin transmission mechanism for sending a sequin connecting body at a predetermined pitch, and the sequin connecting device is wound from a reel that is wound by winding a sequin connecting body formed by connecting a plurality of sequins (sequins). The connecting body is continuously sent out and placed on the upper surface of the support plate, and the sequin connecting body is sent out at a predetermined pitch corresponding to the size of one sequin by the transmission operation of the sequin transmission mechanism. The sequin located at the head of the sequin coupling body sent out by this sequin transmission mechanism is cut by cooperation with a fixed scalpel fixed to the support plate and a movable blade installed on the support plate to be rotatable. It is to be sealed. When the sequin needle bar is lowered, the movable blade abuts against the needle cloth provided at the lower end of the needle bar, and is rotated, whereby the sequin is cut.

In the needle-embedded sewing machine of Patent Document 1, when the sequin is sealed, the sequin needle is selected and the sequin sealing device is lowered to the lowered position. When embroidering, the needle other than the sequin needle is selected. The sequin seal is intended to be retracted upwards.

However, in the sewing body which combined the sealing and embroidery of a sequin, there are not many things which perform the sealing and embroidery of a sequin in the same color thread. In this case, it is better to seal the sequin and to embroider with the same colored yarn and to embroider with the sequin needle without changing the needle bar. In that case, conventionally, the sequin sealing device was kept in the lowered position. This is to shorten the working time by continuously sealing and embroidery the sequin without stopping the sewing machine. As is well known, when the needle bar used for the sewing operation is changed (so-called "color change"), the sewing machine is stopped and the thread of the needle bar used for sewing up to that time is cut. On the other hand, even when the sequin sealing device is raised and lowered, the movable blade which moves up and down together with the sequin sealing device may be damaged if it touches the needles of the sequin needle bar, so that the sewing machine is stopped. Therefore, by embroidering in the same color yarn as the sequin seal, the sequin needle bar while the sequin seal device is lowered to the lowered position without stopping the sewing machine and selecting another needle bar, The time taken does not occur, which reduces the work time. As a matter of course, when the normal embroidery is sewn on the sequin needle bar, the sequin is not sent out by the sequin transmission mechanism.

However, the working time can be shortened by carrying out the normal embroidery to the same color yarn as the sequin sealing by the sequin needle with the sequin sealing device lowered to the lowered position, but the embroidery by the sequin needle lowers the sequin sealing device. Since it is in the lowered position, when the sequin needle lowers, the needle touches the movable blade. That is, since the movable blade is beaten unnecessarily by the needle cloth, the movable blade is easily broken. Moreover, there existed inconvenience that a sewing machine noise became large by the contact of this unnecessary needle | bubble and a movable blade.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned point, and by moving the sequin sealing device to the retracted position during normal sewing by the sequin needle bar, the contact between the needle cloth and the movable blade does not occur and the sewing machine is not stopped. In order to provide a sewing machine, the sequin sealing device can be moved between an operating position and a retracted position, thereby shortening the working time.

The sewing machine according to the present invention comprises a sewing head including a needle needle mechanism which can be used for both sequin sewing and normal needle sewing, and an operation position which is installed corresponding to the needle needle mechanism, and a sequin sewing operation position and a sequin sewing non-retraction position. The needle bar while maintaining the sewing operation when the sequin sealing device which is movable at and the first switching operation of switching the sequin sealing device from the operating position to the retracted position, or vice versa, is operated. Moving the sequin sealing device to the retracted position in the first switching operation, while the needle control unit for inhibiting or delaying the lowering of the needle bar of the instrument and the needle bar control unit inhibiting or delaying the needle bar lowering; In the second switching operation, a moving mechanism for moving to the operating position is provided.

According to the present invention, in the first switching operation of switching the sequin sealing device from the operating position to the retracted position, or vice versa, the sewing operation (for example, spindle rotation) is maintained. Since the needle bar of the needle bar is prevented from being delayed or delayed, the needle bar stops at the upper part or the longer time at the top without stopping the sewing machine. Thus, while the needle bar is in the upper position, In, it is possible to safely move the sequin sealing device from the operating position to the retracted position and vice versa. Therefore, by moving the sequin sealing device to the retracted position during normal sewing, not only can the contact between the needles and the movable blades occur, but the sequin sealing device can be moved without stopping the sewing machine. Shortening can also be secured.

As an example, the needle bar control unit is a needle bar jump mechanism and prohibits the needle bar from falling by jumping the needle bar.

As an example, the needle bar control unit is a sewing spindle speed control device, and delays the lowering of the needle bar by reducing the sewing spindle speed.

As a specific embodiment, when the sewing machine performs the sewing operation of the embroidery pattern in which sequin sewing and normal embroidery are mixed, the needle bar is lowered to the needle bar control unit in response to the embroidery pattern position where the first switching operation should be performed. The restraint (jump) or fall delay (spindle deceleration) is effected while the movement means moves the sequin sealing device.

For example, after sewing a sequin, when the embroidery is normally made with the same color thread as the sequin sewing on the same needle used for sewing the sequin, the needle used for sewing the sequin is temporarily jumped or the sewing spindle speed is decreased. As a result, embroidery is normally performed by moving the sequin sealing device from the operating position to the retracted position and then releasing the jump state of the needle bar or returning the sewing spindle speed to the normal operation speed. Then, since the movable blade attached to the sequin sealing device in the retracted position has not already been fitted to the needle of the needle moving up and down, the movable blade of the sequin sealing device is normally worn during embroidery by the same needle as sequin sewing. The needles are not beaten unnecessarily by the needles, and the movable blades are prevented from being easily broken, and collision noises are not generated, so that the sewing noise during normal embroidery by the sequin needles is not increased. On the contrary, when sequins are sewn using the same needle after embroidering, the sequin sealing device is moved from the retracted position to the operating position at the same time by prohibiting the lowering of the needle (jumping) or delaying the lowering (spindle deceleration). Then, the sequin is sewn after releasing the fall prohibition (jumping state) of the needle bar or returning the sewing machine spindle speed to the normal operation speed. In either of the first and second switching operations, the position change can be performed without stopping the sewing operation (spindle rotation) in order to move the sequin sealing device in the needle bar jump state, and stop the sewing machine. In comparison with the case of doing this, the loss of working time can be minimized.

As an example, an embroidery data supply unit for supplying embroidery data of embroidery patterns in which sequin stitching and normal embroidery are mixed, and an embroidery pattern position to perform the first switching operation or the second switching operation based on the supplied embroidery data. And a data generating portion for inserting a jump code (or a deceleration instruction for a sewing machine spindle) instructing needle needle jump in the embroidery stitching data corresponding to the determined embroidery pattern position, wherein the needle needle controller and the moving mechanism In accordance with the jump code (or deceleration command) in the embroidery data, the needle jumps (or decelerates the sewing machine spindle) and moves from the operating position of the sequin sealing device to the retracted position or vice versa.

As another example, in the embroidery data, a jump code (or a deceleration command of the sewing machine spindle) for instructing needle bar jump is inserted in advance corresponding to the embroidery pattern position at which the first switching operation or the second switching operation should be performed. The needle bar control unit and the moving mechanism move from the operating position of the needle bar jump (or the deceleration of the sewing machine spindle) and the sequin sealing device to the retracted position according to the jump code (or the deceleration command) in the embroidery data. The reverse movement may be performed.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an external view of an embroidery sewing machine having four sewing heads and four standing sewing machines. A needle bar case 2 is provided in each sewing head, and a needle plate 30 is disposed below each needle bar case 2. The sequin sealing device 1 is attached to the left side and / or the right side of each needle case 2, respectively, and is attached only to the left side in this embodiment. Each needle case 2 consists of a needle constitution, and when the sequin sealing device 1 is mounted on the left side of the needle case 2 as in the present embodiment, the needle needle on the left side in the needle case 2 is sewn. It is used as a needle needle (sequin needle needle) for sewing. As is commonly known, the embroidery frame 31 is driven in the horizontal direction (X direction) and the vertical direction (Y direction) in accordance with the embroidery stitching data.

2 is a left side view of the sequin sealing device 1. The sequin sealing device 1 supports the reel 5 wound around the sequin coupling body 3 on the mounting base 4 and supports the sequin transmission mechanism 6. The mounting base 4 is attached to the fixed base 7 fixed to the left side of the needle bar case 2 via two connecting arms 8. Both ends of both connecting arms 8 are attached to the mounting base 4 and the fixed base 7, respectively, and the mounting base 4 is attached to the fixed base 7 (needle case 2). It is possible to get on and off. An air cylinder 9 is attached to the mounting base 4, and the air cylinder 9 is fixed to a bracket 10 held by the mounting base 4. The tip of the rod of the air cylinder 9 is fixed to the bracket 11 held by the fixed base 7. By the operation of the air cylinder 9, the mounting base 4 moves up and down with respect to the fixed base 7, whereby the entire sequin sealing device 1 sews the sequins shown in FIG. It moves up and down between the lowered position (operation position) which can be implemented, and the predetermined retraction position (shown in FIG. 3) which raised upward from this lowered position (operation position).

4 is an enlarged right side view of a part of the sequin transmission mechanism 6 in the sequin sealing apparatus 1. The sequin transmission mechanism 6 is assembled to a support plate 12 mounted below the mounting base 4. A support plate 13 for supporting the sequin is horizontally installed at the lower end of the support plate 12, and the sequin connecting body 3 continuously exported from the reel 5 is supported on the support plate 13. It is to lead. The support plate 12 is supported with a rocking arm 15 which is rocked by the driving of the motor 14 fixed to the mounting base 4. The transfer lever 16 is provided in the free end of the swinging arm 15. By operating this transfer lever 16 back and forth by the drive of the motor 14, the sequin connection body 3 on the support board 13 is sent out in order by predetermined pitch. The movable blade 17 is rotatably supported by the lower part of the support plate 12, and the fixed blade 18 is formed in the edge part by the side of the movable blade 17 of the support plate 13 at the side. The movable blade 17 is always held by the torsion spring 19 in a retracted attitude spaced upward from the fixed blade 18. The movable blade 17 is pressed by the needle | tip needle 21 of the lower end when the needle | tip needle 20 descend | falls, and when pressed by the needle | tip 21, it rotates and resists the elasticity of the torsion spring 19, and is fixed. The sequin located at the head of the sequin connector 3 sent out in cooperation with the blade 18 is cut.

When the needle cloth 21 rises with the needle bar 20, the movable blade 17 returns to the retracted position by the restoring force of the torsion spring 19. In addition, the sequin transmission mechanism 6 is well known, and since it is described also in the said patent document 1, detailed description is abbreviate | omitted.

Fig. 5 is a block diagram showing an example of a control system of embroidery sewing machine according to the present embodiment. Various operations of this embroidery sewing machine are controlled by a microcomputer including a CPU (central processing unit) 41, a read only memory (ROM) 42, and a random access memory (RAM) 43. The operation panel 44 is composed of switches, indicators, and the like for performing various settings, selections, instructions, and the like in the embroidery sewing machine. The storage unit 45 is composed of a hard disk, a removable storage medium, and the like, and stores a control program for implementing the present invention, various operation control programs thereof, embroidery stitch data corresponding to various embroidery patterns, and the like. Drivers (motors, solenoids, cylinders, and the like) 47 to 51 for driving control of each mechanism of the sewing machine are connected to the computer bus 46 via the interface I / F. In FIG. 5, only some drivers 47-51 are shown for convenience, and the others are abbreviate | omitted.

The missing spindle driver 47 is configured to include a missing spindle motor. As is well known, the sewing spindle is rotated in accordance with the sewing operation instruction, and the needle bar selected in each sewing head is then driven up and down. In addition, the rotation of the sewing machine spindle is stopped in response to the sewing stop command. The embroidery frame driver 48 is comprised including the X-axis and Y-axis drive motor which drive the embroidery frame 31 X-Y. As is known, the embroidery frame 31 is X-Y driven in accordance with the stitching pattern (sewing width and direction) per stitch according to the stitching pattern data of the embroidery pattern. The color change driver 49 is comprised including the motor which slides the needle bar case 2 for each sewing head. As is well known, when changing the color thread, the needle bar in which the desired color thread is set by sliding the needle case 2 of each sewing head is selected. When sequin sewing is performed, the needle bar 20 in which the sequin sealing device 1 is set is selected. The needle bar jump driver 50 is configured to include a solenoid or the like for jumping the needle bar 20 for each sewing head. As is well known, when the needle bar 20 is jumped, the needle bar 20 is not driven up and down even when the sewing machine main shaft is rotating, and stops at the jump position above. The sequin driver 51 is configured to include a driver (motor 14) for driving the sequin transmission mechanism 6 in the sequin sealing device 1 and a driver for raising and lowering (air cylinder 9). Under the control of the CPU 41, the driver (motor 14) for driving the sequin transmission mechanism 6 is driven and controlled in response to sequin stitching per stitch in the middle of the sequin sewing operation. Driver (air cylinder 9) is driven controlled to move the sequin sealing device 1 to the lowered position (operation position) prior to the start of the sequin sewing operation, and the sequin sealing device 1 at the end of the sequin sewing operation. Drive control to move it to the retracted position.

In the present specification, for convenience, the operation of switching the sequin sealing device 1 from the operating position to the retracted position is referred to as "first switching operation", and the operation of switching from the retracted position to the operating position is referred to as "second switching operation". Shall be. When to perform such an operation may be automatically determined by the processing of the CPU 41 in accordance with the progress of the embroidery sewing operation as described later, or necessary instruction data in the embroidery data is prepared in advance for the embroidery progress. In association with the instruction data at a predetermined timing, the instruction may be automatically performed, or an instruction necessary for an appropriate timing may be given by a switch operation by an operator.

In the middle of the process of lifting and moving the sequin sealing device 1 through the sequin driver 51 under the control of the CPU 41, that is, the sewing operation is performed when the first switching operation or the second switching operation is performed. While holding, needle bar control is performed to prohibit or delay the needle bar drop. The first embodiment of such needle bar control is made by prohibiting the needle bar lowering, and the needle bar lowering prohibition is realized by the needle bar jump mechanism. First, the first embodiment of such needle bar control will be described below.

In the first embodiment, the CPU 41 and the needle bar jump driver 50 function as the needle bar control unit, and the needle bar jump driver 50 is driven by the control of the CPU 41 to jump the needle bar 20. Doing. Thus, even if the sequin sealing device 1 is moved up and down without stopping the rotation of the sewing machine spindle, the sequin sealing device 1 and the needle bar mechanism which move up or down by being jumped by the needle bar 20 are jumped. There is no fear of interference (in particular, the needles 21 do not come into contact with the movable blade 17). When the lifting movement is completed and the sequin sealing device 1 is positioned at the predetermined operating position or the retracted position, the jump control of the needle bar 20 is stopped, and then the needle bar 20 moves up and down with the rotation of the sewing machine spindle. You will be lucky. In addition, when performing normal embroidery stitching using the needle bar 20 corresponding to the needle bar position where the sequin seal device 1 is arranged, the sequin seal device 1 is moved to the upper retracted position, and the embroidery needle is sewn. Is carried out. Thereby, the needle | tip cloth 21 of the needle | tip needle 20 which moves up and down does not touch the movable blade 17 of the sequin sealing device 1.

As such, the control for jumping the needle bar 20 during the first switch action or the second switch action uses the same needle bar 20 for sequin sewing during the sewing operation of one embroidery pattern (using the same color yarn), It is advantageous when the sequin sewing or the normal embroidery sewing is performed at any time while maintaining the sewing operation (without stopping the rotation of the sewing spindle). That is, when there is a portion where sequin stitches using the same color yarn and normal embroidery are mixed in one embroidery pattern, the sequin sealing device 1 is moved in the first switching operation or the second switching operation while jumping the needle bar 20. By moving, the sequin sealing device 1 can be positioned in the operating position or the retracted position while maintaining the sewing operation (without stopping the rotation of the sewing spindle), and sequin sewing using the same needle rod 20. It is possible to perform smoothly by alternately switching between the normal and embroidery thread. In this case, since the sequin sealing device 1 is normally placed in the retracted position in the middle of embroidery stitching, the needle 21 of the needle bar 20 moving up and down moves the movable blade 17 of the sequin sealing device 1. I do not touch).

Next, an embodiment in which needle bar jump data is automatically generated based on the embroidery data and inserted into the embroidery data will be described with reference to the flowchart of FIG. 6. In this embodiment, in the embroidery pattern to be sewn, the pattern is partially switched from sequin sewing to normal embroidery sewing (or vice versa) with the same color thread, but sequin sewing and normal embroidery are mixed. The embroidery data supplied from the pattern data memory (memory section 45) is in the form of conventional data, and it is assumed that the needle bar jump code is not set corresponding to this partial pattern switching part. Here, the jump data is automatically generated in the necessary change portion by the process of Fig. 6 and inserted into the embroidery data.

When the desired embroidery pattern is selected and the operation start switch is operated, the sewing machine is started to enter a state where embroidery sewing is started, and the processing shown in FIG. 6 is started. In addition, in the initial state at the time of embroidery start, the sequin sealing apparatus 1 shall be placed in the retreat position of the upper side. In Fig. 6, in step S1, embroidery data of n stitch portions (n is a predetermined plurality) among the embroidery data stored in the embroidery pattern data memory is read in advance. First, data from one stitch to n stitches are read in advance, and next, data from n + 1 stitches to 2n stitches is read in advance, and thus, every n stitches are read in order. In addition, this read-out stitch number n does not always need to be constant, and it does not interfere even if it changes suitably. Embroidery data for the n stitches read in advance is stored in the working area of the RAM 43 and used in the determination process in the following steps, while non-data jump codes generated in the following steps are embroidered in the working area. It is inserted into the data.

In step S2, whether or not to perform the second switching operation for switching the sequin sealing device 1 from the retracted position to the operating position based on the embroidery data for the n stitches read in advance ("Sequence should be lowered?" Is determined. Specifically, in the state where the sequin sealing device 1 is in the retracted position, it is determined whether or not a sequin code (sequin sending command) is included in the embroidery data for the aforementioned n stitches. The sequin code is a command code for instructing the sequin to be sent out every stitch. If it is determined that the second switching operation should be performed, it is determined in step S3 where the embroidery pattern position at which the second switching operation should be performed is performed, and in response to the determined embroidery pattern position, the second switching operation is performed. A "sequence descending instruction" for instructing execution is generated, and a non-data jump code (a stitch data is 0 and a code indicating only needle stitch jump) is generated, and only stitch number is inserted into the embroidery data as appropriate. The number of stitches into which the non-data jump cord is inserted is set to a number suitable for the time required to move the sequin sealing device 1 downward from the retracted position to the operating position, and it is assumed that the number of stitches fluctuates in relation to the number of machine spindle rotations. In addition, the operator may allow the number of stitches to be appropriately set. For example, if a non-data jump cord is inserted for 3 stitches, the embroidery frame 31 does not move (because the stitch data is 0) at the sewing timing of such stitches, and keeps the jump state for 3 stitches in between. The sequin sealing device 1 is lowered from the retracted position to the operating position. For example, in step S3, the i-th stitch without the sequin code and the i + 1 th stitch with the sequin code are specified, and the embroidery pattern position of the boundary between the i-th stitch and the i + 1 th stitch is the second switching operation. Is determined to be the embroidery pattern position to be executed, and the non-data jump code of the stitch number is appropriately inserted after the embroidery data of the i-th stitch, and the sequin descending command is included in response to the first insertion stitch therein. .

In the next step S4, it is determined whether or not the first switching operation for switching the sequin sealing device 1 from the operating position to the retracted position is to be performed based on the embroidery data for the n stitches read in advance. In addition, in this embodiment, in order to prevent the sequin sealing device 1 from being moved up and down frequently, rather than losing the working time, the sequin code is not immediately raised without raising the sequin sealing device 1 even if the sequin code is lost. After confirming that the stitch without a predetermined number is continued for a predetermined number or more, the sequin sealing device 1 is moved up from the operating position to the retracted position. Therefore, in this step S4, if the sequin code does not exist continuously for a predetermined number of stitches (for example, 100 stitches) after the sequin code is broken, the first switching operation must be performed ("Sequence must be raised." Will it be determined? ” This predetermined number of stitches may be arbitrarily set by the operator of the sewing machine.

In addition, in the determination of this step S4, not only the embroidery data for the n stitches previously read in advance, but also from the embroidery data for the n stitches previously read in advance, the sequin code has a predetermined number of stitches (for example, 100 It is determined whether or not there exists continuously in between). In addition, although the embroidery is normally performed between the predetermined number of stitches, the sequin sealing device 1 is held in the lowered position, and the movable blade 17 is beaten by the needles 21 in the same manner as before. Since priority is given to reducing the work time loss as described above, it is assumed that this is inevitable. Further, even if the sequin sealing device 1 is held in the lowered position between the predetermined number of stitches, no sequin cord is present, so the sequin delivery is not performed and normal embroidery stitching is performed. Of course, the sequin sealing device 1 may be raised immediately when the sequin cord is lost, without setting a margin when the sequin sealing device 1 is moved upward. By this, the movable blade 17 is completely beaten.

If step S4 is YES, the first switchover corresponds to the embroidery pattern position (embroidery pattern position where a predetermined number of stitches have elapsed since the sequin code is cut) in which it is determined in step S5 that the first switching operation should be performed. A "sequence rise command" instructing to perform the operation is generated, the same non-data jump code is generated as described above, and only stitch number is inserted into the embroidery data as appropriate. As described above, the number of stitches into which the non-data jump cord is inserted is also set to a number corresponding to the time required to move the sequin sealing device 1 from the operating position to the retracted position.

Next, in step S6, it is checked whether the sewing operation routine has already started, and if not, the &quot; operation routine &quot; S7 is executed. In "Operation routine" S7, the sewing machine spindle is rotated, and the embroidery data in the working area of the RAM 43 is read one stitch at a time according to the sewing order, and the embroidery sewing (sequence sewing or normal embroidery) according to the read embroidery data is performed. Run If the sewing operation routine has already started, the process proceeds to step S8 to determine whether the next n stitch data should be read out. For example, when the unprocessed amount of embroidery data in the working area reaches a predetermined number of stitches in accordance with the progress of embroidery stitching in the "run routine" S7, a read instruction is generated from this "run routine" S7. In step S8, if it is detected that this read instruction is given, the flow returns to step S1 to read the embroidery data for the next n stitches. With this, the same steps S2 to S5 as described above are repeated to generate the "sequence falling instruction" or "sequence raising instruction" and the "non-data jump code", and the corresponding next n stitches in the working area. Insertion of these generated instructions and jump codes into the embroidery data is performed. When the sewing machine spindle is rotated once at the start of embroidery, the operation is not stopped unless a sewing stop instruction is given, and the &quot; operation routine &quot; S7 continues to be executed. For example, when the yarn is changed, the sewing machine is stopped once, even during the stitching of the embroidery pattern, and selection / change of the needle bar corresponding to the cutting of the conventional needle thread and the new yarn is performed. On the other hand, in the present embodiment, when switching from sequin stitching to normal embroidery or vice versa, if the yarn is not changed, the sewing stop command is not generated and the sewing operation continues. Therefore, the embroidery data supplied from the embroidery pattern data memory (memory section 45) is in the form of conventional data, and if the yarn is changed from sequin sewing to normal embroidery, or vice versa, without changing the yarn. In this case, if the sewing stop command is inserted in the embroidery data, it is assumed that such a sewing stop command is deleted when the jump code is inserted in the processing of step S3 or S5. In addition, at the end of the stitching of the embroidery pattern, in the &quot; operation routine &quot; S7, an end instruction is generated in place of the precedent instruction, and the processing of Fig. 6 is thus terminated.

Next, as a specific sewing operation example, the case where the sequin sewing shown in FIG. 7 and the embroidery pattern which mixed normal embroidery are performed is demonstrated. In Fig. 7, A1 to A3 are usually embroidered, and B1 and B2 are sequined seals. Embroidery A1 to A3 and sequin seals B1 and B2 are performed in the same color yarn. Sequin sewn B2, embroidery A3 in order. In addition, embroidery A1, A3 shall be 100 stitches or more, and embroidery A2 shall be less than 100 stitches.

First, if the embroidery data of the embroidery pattern shown in Fig. 7 is stored in the external memory, it is read out from the external memory to the sewing machine and stored in the embroidery pattern data memory (memory section 45) made of a hard disk or the like. Next, while setting the non-data jump code generated when the sequin sewing unit 1 is raised and lowered, which stitch portion is used, the sequin sealing apparatus 1 is moved upward when the embroidery stitch is continued with a certain stitch after sequin sewing. The number of stitches (the predetermined number of stitches determined in step S4 of FIG. 6) is set. In this example, the non-data jump cord is set to three stitches, and the sequin sealing device 1 is set to retract when the embroidery stitch normally continues for 100 stitches or more after sequin stitching. As described above, the number of stitches may be set in advance or may be variable set by the operator. The number of stitches of the non-data jump cord may be determined by the number of sewing revolutions at that time, or may be set separately when the sequin sealing device 1 is retracted and when it is lowered.

When the sewing machine is started and sewing starts, the sequin needle is first selected according to the color data. Since the sequin code is not yet included in the read data, the sequin sealing device 1 remains evacuated to the upper retracted position. Therefore, by the execution of the driving routine (step S7 in Fig. 6), the embroidery A1 is normally executed using the sequin needle. Then, when the data of the sequin seal B1 is read in advance with the progress of the normal embroidery A1, the sequin is changed in the stitch transition from the sequin cord to the sequin cord stitch by the processing of step S3 of FIG. 6 described above. Immediately before the coded stitch, three non-data jump codes are generated and inserted, and a "sequence descending instruction" is inserted. For reference, in Fig. 8, the structure of the original embroidery data is shown roughly in (a), and the "sequence descending command" or "sequence rising command" and "non-data jump code" are inserted in (b). The configuration of the embroidery data is roughly shown. As a result, when the sewing routine of embroidery A1 is finished by the execution of the operation routine (step S7 in FIG. 6), the "sequence descending instruction" and "nondata jump code" inserted as data of the next stitch are inserted. As a result, the sequin needle becomes a jump state for three stitches, and the sequin sealing device 1 moves downward to the operating position. In the meantime, the rotation of the sewing machine spindle is maintained.

Next, in the operation routine (step S7 of FIG. 6), when the execution of the stitch of the "non-data jump code" is ended and the execution is shifted to the execution of the stitch with the "sequence code", the jump state of the sequin needle is released and the needle bar is moved up and down. According to the movement, stitching becomes possible, the sequin transmission mechanism 6 is operated in accordance with the "sequin cord", and the sequin connecting body 3 is sent out to perform the sequin sealing B1. Then, when the data of the normal embroidery A2 is read in advance with the progress of the sequin sealing B1, the sequin sealing apparatus 1 is operated at the portion to be switched to the normal embroidery by the processing of step S4 of FIG. 6 described above. It is determined whether or not the first switching operation to switch to the retracted position should be performed at. That is, in step S4 of FIG. 6, it is determined whether the normal embroidery A2 after sequin sealing B1 continues 100 stitches or more. In this example, since this normal embroidery A2 is less than 100 stitches, it is determined as no. Therefore, the process of step S5 of FIG. 6 is not executed, and the non-sequence jump code is not generated without evacuating the sequin sealing apparatus 1. In this case, when the embroidery A2 is sewn after sequin sealing B1 by the driving routine, the sequin sealing device 1 remains lower, but since the sequin cord is not present, the sequin connecting body 3 is sent out, thus Usually stitching of embroidery A2 is performed.

Then, when the data of the sequin seal B2 is read in advance with the progress of embroidery A2, the sequin seal device 1 is switched from the retracted position to the operating position based on the recognition of the sequin code in step S2 of FIG. It is determined whether or not the second switching operation should be performed. In this case, since the sequin sealing device 1 remains lowered to the operating position, it is not necessary, and it is determined as no. Therefore, the generation and insertion of the "sequence falling instruction" and "non-data jump code" by step S3 of FIG. 6 is not performed. In this case, when embroidery A2 finishes by execution of a driving routine, it will shift to sewing of sequin sealing B2 immediately. At that time, since the sequin sealing device 1 is lowered and the "sequence cord" is included in the stitch data, the sequin transmission mechanism 6 is operated accordingly, and the sequin connecting body 3 is sent out. Sequin sealing B2 is performed.

Then, when the data of the normal embroidery A3 is read in advance with the progression of the sequin sealing B2, the sequin sealing apparatus 1 is operated in the portion which is converted to the normal embroidery by the processing of step S4 of FIG. 6 described above. It is determined whether or not to perform the first switching operation of switching from a position to a retracted position. In this case, since the normal embroidery A3 continues 100 stitches or more, it is determined as an example in step S4 of FIG. 6, the processing of step S5 of FIG. 6 is executed, and the last stitch of sequin sealing B2 and the first stitch of normal embroidery A3 are performed. In the meantime, the "non data jump code" for three stitches is generated and inserted, and the "sequence rise command" is inserted. In this case, when the sequin sealing B2 is terminated by the execution of the operation routine, the feeding of the sequin connecting body 3 is stopped, and the sequin needle bar is in a jump state for three stitches. Is moved up to the retracted position. In the meantime, the rotation of the sewing machine spindle is maintained. Immediately thereafter, the jump state of the sequin needle is released, and normal embroidery A3 is performed based on the embroidery data of embroidery A3. In this state, since the sequin sealing device 1 remains in the retracted position, the movable blade 17 of the sequin sealing device 1 is not beaten by the needle 21 of the needle bar 20 moving up and down. . Then, when the embroidery A3 ends, the sewing machine is stopped.

As described above, according to this embodiment, when embroidering with the sequin needle before or after the sequin is sealed, the lifting and lowering of the sequin sealing device 1 is carried out without stopping the sewing machine by lifting the sequin needle into a jumping state. By doing so, the movable blade 17 is not unnecessarily beaten to the needle cloth 21 at the time of embroidery by the sequin needle, preventing the movable blade 17 from being easily damaged, and a sequin without generating a collision sound. Sewing machine noise at the time of embroidery by needle bar does not increase. And since the sequin needle bar is made to jump in and out of the sequin sealing device 1, the loss of working time can be made small compared with the case where a sewing machine is stopped. In addition, when the sequin stitching unit 1 is less immersed and the sequin sewing unit 1 is raised and lowered, the sequin sewing unit 1 may not be lifted or lowered.

Next, as a second embodiment of needle bar control, when the first switch operation is performed or the second switch operation to be reversed, control is performed to delay the lowering of the needle bar while maintaining the sewing operation. Explain. In the second embodiment, the CPU 41 functions as the needle bar control unit, and the movement speed of the needle bar 20 is decelerated to delay the needle bar 20 from falling. Since the up-and-down driving of the needle bar 20 is normally performed in conjunction with the rotation of the sewing machine spindle, such reduction of the moving speed of the needle bar 20 can be performed by reducing the sewing machine spindle speed. As described above, while the lowering of the needle bar 20 is delayed, the lifting operation (the first switching operation or the second switching operation) of the sequin sealing device 1 is performed.

When implementing this 2nd Embodiment, since the lifting operation (the said 1st switching operation or the 2nd switching operation) of the sequin sealing apparatus 1 is instructed in the said 1st Embodiment, the said inserting in embroidery data Instead of the "non-data jump code", a "deceleration instruction for the sewing machine spindle" may be inserted. Thereby, when the "deceleration instruction of the sewing machine spindle" is given in the course of the embroidery stitching operation, the rotational speed of the sewing machine spindle motor is decelerated accordingly, and the vertical drive speed in the predetermined stroke of the needle bar 20 is reduced. Is delayed, and the lowering of the needle bar 20 on the upper side is delayed. Therefore, while the needle bar 20 has a time allowance to descend to the upper side, the sequin sealing device 1 can be moved up and down (the first switching operation or the second switching operation) in the same manner as above. . In addition, the rotation speed at the time of deceleration of a sewing machine main shaft may be a preset value, and an operator may set it arbitrarily by an operation panel.

Therefore, also in this 2nd Embodiment, similarly to 1st Embodiment, when embroidering with a sequin needle before or after sealing a sequin, sewing operation of the sequin sealing apparatus 1 is performed by raising and lowering. Since the lowering of the needle bar is delayed, the movable blade 17 is not unnecessarily beaten to the needle cloth 21 at the time of embroidery by the sequin needle, and the movable blade 17 does not stop. It is possible to prevent breakage and to prevent the occurrence of collision noise and to increase the sewing noise during embroidery by the sequin needle. In addition, it is possible to minimize the loss of working time compared to the case of stopping the sewing machine.

In the above embodiment, when embroidering, the embroidery data is read in advance for every predetermined number of stitches, and the "non-data jump code" (or "deceleration command of the sewing machine spindle") for raising and lowering the position of the sequin sealing device 1 is read. It is created and inserted almost simultaneously with the stitching action (slightly ahead of the stitching action). However, the present invention is not limited to this. When the embroidery data of the desired embroidery pattern is read from the external memory to the sewing machine, all embroidery data in the embroidery pattern should be checked and inserted into the embroidery pattern before starting the sewing operation. Generate all "sequence descending instructions" and "sequence rise instructions" and "non-data jump codes" (or "deceleration instructions for the sewing machine spindle"), insert them all into embroidery data, and then sewing on the basis of the embroidery data. You may start operation. Also, in the embroidery data of the desired pattern, the "sequence descending command" and "sequence rising command" and "non-data jump code" (or "deceleration command of the sewing machine spindle") are inserted in advance, and such jump code (or "sitting machine") is inserted. Embroidery data of the insertion agent, such as the deceleration instruction of the main shaft ") may be read from the external memory or the like into the sewing machine.

In addition, the sequin sealing device 1 may be held at an intermediate position between the operating position and the retracted position (this is called the upper retracted position) (this is called the intermediate retracted position). And when switching to normal embroidery by sequin sewing and sequin needle, if the sequin sealing device 1 is made to elevate between an operation position and an intermediate position (intermediate retreat position), the time required for the elevating will be increased. You can shorten it. In this case, when the sewing machine is stopped, the sequin sealing device 1 may be retracted to the uppermost retracted position. In this manner, the retracted position is not limited to one, and may be any one of the plurality of retracted positions, that is, a position where the sequin sewing is impossible (the position where the movable blade 17 is not beaten by the needle 21).

The apparatus for elevating the sequin sealing device 1 is not limited to the air cylinder 9 but may be another actuator such as an electric motor.

In addition, in the said Example, although the example of the multi-threaded embroidery sewing machine provided with the sequin sealing device 1 was shown, you may apply this invention to the other type of sewing machine provided with a sequin sealing device.

According to the present invention, it is possible to provide a sewing machine which can move the sequin sealing device to an operating position in which the sequin can be sealed and a retracted position in which the sequin is not sealed.

Claims (8)

A sewing head comprising a needle bar mechanism which can be used as either sequin sewing or normal sewing, A sequin sealing device which is provided in correspondence with the needle bar mechanism and is movable between a sequin sewn operation position and a sequin sewn retractable retracted position; During the first switching operation of switching the sequin sealing device from the operating position to the retracting position, or vice versa, while prohibiting the lowering of the needle bar of the needle bar mechanism while maintaining the sewing operation; Or a needle bar controller for delaying, While the needle bar control unit prohibits or delays the needle bar from descending, the movement mechanism for moving the sequin sealing device to the retracted position in the first switching operation, and moving to the operating position in the second switching operation. A sewing machine comprising: The method of claim 1, The needle bar control unit corresponding to the embroidery pattern position to perform the first switching operation or the second switching operation when the sewing machine performs the sewing operation of the embroidery pattern in which the sequin sewing and the normal embroidery are mixed. A sewing machine, characterized in that the lowering of the needle bar is prevented or delayed, and the movement mechanism moves the sequin sealing device. The method of claim 1, And the needle bar control unit prohibits the needle bar from falling by jumping the needle bar. The method of claim 3, Embroidery data supply part which supplies embroidery data of the embroidery pattern which mixed sequin sewing and normal embroidery, On the basis of the supplied embroidery data, the embroidery pattern position to perform the first switching operation or the second switching operation is determined, and a jump code for instructing needle jump in the embroidery data corresponding to the determined embroidery pattern position is determined. Further provided with a data generation unit to insert, And the needle bar control unit and the moving mechanism perform the movement of the needle bar from the operating position of the needle bar and the sequin sealing device to the retracted position or vice versa in accordance with the jump cord in the embroidery data. The method of claim 3, The sewing machine is to sew embroidery on the basis of the embroidery data of the embroidery pattern in which sequin sewing and normal embroidery are mixed, In the embroidery data, a jump code for instructing needle bar jump is inserted in advance corresponding to the embroidery pattern position at which the first switching operation or the second switching operation should be performed. And the needle bar control unit and the moving mechanism perform the movement of the needle bar from the operating position of the needle bar and the sequin sealing device to the retracted position or vice versa in accordance with the jump cord in the embroidery data. The method of claim 1, And the needle bar control unit delays the lowering of the needle bar by reducing the sewing spindle speed. The method of claim 6, Embroidery data supply part which supplies embroidery data of the embroidery pattern which mixed sequin sewing and normal embroidery, Based on the embroidery data supplied, the embroidery pattern position to be subjected to the first switching operation or the second switching operation is determined, and a deceleration instruction of the sewing machine spindle is inserted into the embroidery data corresponding to the determined embroidery pattern position. Further comprising a data generation unit, The needle bar control unit and the moving mechanism perform the movement of the deceleration of the sewing machine spindle and the movement from the operating position of the sequin sealing device to the retracted position or vice versa in accordance with the deceleration instruction in the embroidery data. . The method of claim 6, The sewing machine is to sew embroidery on the basis of the embroidery data of the embroidery pattern in which sequin sewing and normal embroidery are mixed, In the embroidery data, the deceleration instruction of the sewing machine spindle is inserted in advance corresponding to the embroidery pattern position at which the first switching operation or the second switching operation should be performed. The needle bar control unit and the moving mechanism perform deceleration of the sewing machine spindle and movement from the operating position of the sequin sealing device to the retracted position or vice versa in accordance with the deceleration instruction in the embroidery data. .

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