TWI294934B - - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for controlling a sewing device for sewing a belt to a fabric. BACKGROUND OF THE INVENTION Fig. 10 is a block diagram showing a control device 1 in a conventional sewing device. The control device 1 is provided on a sewing device 2 for sewing a tape to a cloth, and is a control device for controlling the sewing device 2. The sewing device 2 includes a sewing machine body 3 for feeding the belt into the feed roller 5 of the sewing machine body 3, driving the feed motor 6 of the feed roller 5, and discharging and feeding the belt around the spool. The supply roller 7 for feeding the feed roller 5 drives the supply motor 8 of the supply roller 7. The control device 1 for controlling the sewing device 2 includes two control circuits 11, 12. The sewing machine body 3 has a sewing machine rotation signal generating device 13. The sewing machine rotation signal generating means 13 detects the rotation speed of the drive shaft for driving the sewing machine body 3, and generates a rotation signal indicating the rotation speed. The control circuit 11 drives and controls the feed motor 6 in accordance with the number of revolutions of the drive shaft indicated by the signal from the slit machine rotation signal generating means 13. Thereby, the feed motor 6 drives the feed roller 5 in accordance with the rotational speed of the drive shaft, and conveys the tape to the sewing machine body 3 in accordance with the sewing operation of the sewing machine body 3. The sewing device 2 has a tension detecting device 14 as shown in, for example, Japanese Patent No. 3061256 (refer to Fig. 5). The tension detecting device 14 detects the tension on the belt between the feed roller 5 and the supply 1294934 by the roller 7. The control circuit 12 drives the supply motor 8 in accordance with the magnitude of the tension indicated by the signal from the tension detecting device 14. Thereby, the supply motor 8 is used to drive the supply roller 7 in accordance with the tension on the belt, and the belt is conveyed to the feed roller 5 5 according to the tension. Specifically, the tension on the belt exceeds the setting. At the time of the tension, the control circuit 12 starts driving the supply motor 8 for a predetermined time so that the supply roller 7 can feed the belt at a supply speed higher than the feed speed of the feed roller 5. After the ribbon between the feed roller 5 and the supply roller 7 is relaxed, the control circuit 12 terminates the operation of the supply motor 8, and then enters the standby state until the tension on the next ribbon exceeds the set tension. The sewing device 2 is provided with a supply roller 7 for discharge, in addition to the feed roller 5 for conveying the sewing machine body, in order to suppress the change in the tension applied to the belt member of the sewing machine body 3, and the control circuit 11 is used. 12 to independently control them, when the tension on the belt between the rollers 5, 7 exceeds the predetermined value of the tension 15, the strip between the rollers 5, 7 which are originally discharged at a high speed is slackened, and the feed is terminated. Until the tension exceeds the set tension again. In the prior art, the rollers 5, 7 are independently controlled to vary the length of the strip between the rollers 5, 7 so that the tension on the strip between the rollers 5, 7 changes. The tension on the belt between the rollers 5, 7 (the change in force) affects the tension on the belt fed into the machine body 3, causing the tension on the belt to change, sometimes Further, since the supply roller 7 discharges the belt at a high speed, static electricity is generated between the belt and the supply roller 7. If the static electricity is not treated, the belt 1294934 is wound around the roller 7. Therefore, it is necessary to provide a device for preventing the occurrence of static entanglement, such as a container for water injection, but this will increase the size of the sewing device and cause troubles in maintenance. [SUMMARY OF THE INVENTION] SUMMARY OF THE INVENTION The present invention is intended to provide a The control device of the sewing device can keep the tension on the belt fed into the sewing device substantially constant, and at the same time prevent the size of the sewing device from being large and easy to maintain. The present invention is a control device for a sewing device, the sewing device The utility model comprises: a seaming unit; a feeding device for feeding the belt into the sewing unit; a feeding driving device for driving the feeding device; and a feeding device A supply device for feeding a belt; a supply drive device for driving the supply device, comprising: a control unit that synchronizes with a sewing operation of the sewing unit, controls the feed drive device, and supplies the drive device. 15 According to the present invention, the sewing device The sewing operation is synchronized, and the supply drive device and the feed drive device are controlled by one control device, so that the sewing operation of the supply device and the feed device can be synchronized and associated control can be performed. The supply device and the feed device are respectively operated to change the tension on the belt between the supply device and the feed device, and the tension on the belt between the feed device and the supply device can be prevented from changing. The tension on the belt fed into the sewing device is changed to keep the tension constant. Moreover, it is not necessary to supply the belt at a high speed by the supply device, so that static electricity can be prevented from being generated by the high-speed supply, and the belt can be prevented from being prevented. Wound on the supply unit of 1294934. Therefore, there is no need to install a separate device to prevent entanglement, like water injection. The container and the like can prevent the size of the sewing device from being enlarged, and at the same time facilitate maintenance. The control unit controls the feed drive device and the supply drive device to control the feed rate and supply device of the feed device to the belt. The supply speed of the ribbon is the same or slightly exceeds the supply speed, and the supply drive is controlled according to the tension of the ribbon between the feed device and the supply device. According to the present invention, the feed drive and the supply drive are controlled. The device allows the feeding speed of the ribbon of the 10-feed device to be the same as or slightly exceeds the feeding speed of the ribbon of the supply device, so that the feeding and supply of the ribbon can be performed by different devices, and the feeding can be performed. The length of the belt between the feeding device and the feeding device is kept constant or substantially constant. Thus, the tension on the belt between the feeding device and the feeding device can be kept constant, and the feeding into the sewing device can be prevented. The tension on the ribbon has an effect that keeps the tension on the ribbon fed into the sewing device constant. Moreover, the supply drive device is controlled according to the tension on the belt between the supply device and the feed device, and thus the tension on the belt between the feed device and the supply device is affected by any external factors. It is possible to control the supply drive to change the supply speed of the supply device so that the tension of the ribbon between the feed device and the supply device can be corrected. In this way, the tension on the belt between the feed device and the supply device can be reliably kept substantially constant. The present invention has a tension detecting device for detecting the tension of the belt 1294934 between the feeding device and the feeding device; when the tension detected by the tension detecting device is above a predetermined set tension, the control device controls the supply driving device to increase the supply. The rate at which the device supplies the ribbon. According to the present invention, when the detected tension between the feeding device and the supply device exceeds a predetermined set tension, the supply speed of the belt of the supply device increases, and the supply amount increases. Thus, at least the tension on the belt between the feeding device and the feeding device can be prevented from being excessively high. This allows the tension on the belt between the feed unit and the supply unit to be corrected to maintain a substantial hold. The feeding device of the present invention can be freely switched between a feeding state in which the belt is fed into the sewing unit and a passing permitting state in which the feeding of the belt into the sewing unit is stopped and the passage of the belt is allowed to pass; the control circuit can be The first control state and the second control state are switched between the control state and the second control state. When the sewing operation of the sewing unit is in the first operation state set in advance, the feed device is allowed to pass and the stop is stopped. The operation of the drive device is controlled to supply the belt by the supply device, and the second control state is to control the feed drive device when the sewing operation of the sewing unit is in the second operation state different from the first operation state. 20 The feed device is in the feed state and the ribbon is fed through the feed device. According to the present invention, according to the sewing operation of the sewing device, the feeding device is caused to be mutually fed between the state in which the tape is fed into the sewing device and the permission to pass the tape into the sewing device and allow the passage of the tape. Switch. When the sewing operation is in the first operation state that is not in advance, the control device is brought into the control state of 1294934, and the feed device is switched to the permission (4) while the stop = the operation of the drive device. . When the sewing operation is in the second operation state, the control device is brought into the second control state to put the feed into the secret state, and the feed device drives the feed device to feed the tape. The feed of the feed device and the supply of the feed device are controlled by a single control device, so that the operation state of the feed device can be switched in accordance with the operation of the device. In this way, the feed device is driven as needed, and the control is more convenient. 10 In the sewing device, a cutting device for cutting the ribbon is provided between the initial unit and the feeding device, and the sewing unit is matched with the cutting device to cut the ribbon according to a predetermined length dimension, and at the same time Sewing on the fabric, the first cloth fabric cloth sewing operation state is the sewing state in which the strip 15 is sewn to the fabric; the second operation state of the seam unit is after sewing on the fabric, cutting The ready state of breaking the ribbon and preparing to sew the ribbon onto the subsequent fabric. According to the present invention, when the slitting motion is in a seam state in which the belt is sewn to the cloth, the feeding device is switched to the pass permission state, and the operation of stopping the feed drive device is stopped, and the supply device supplies the supply device. Ribbon. After the seam on the fabric is finished, the ribbon is cut, and when the preparation state of the ribbon is sewn on the fabric, the feeding device is switched to the feed state, and the feed is driven by the feed drive device. Feed the device and feed the ribbon. Thereby, the feeding device can feed the belt into the 1294934 in the ready state, and the feeding device does not need to transmit the tension to the belt fed into the sewing device. Therefore, the feed drive device does not need to impart a large output torque such as tension to the belt by the feed skirt, and the size can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram showing a control unit 21 of a sewing apparatus 20 according to an embodiment of the present invention. Fig. 2 is a perspective view showing the sewing device 2''. Figure 3 is a perspective view showing an article sewn by the sewing device 20. Fig. 4 is a flow chart showing 10 control operations of the control circuit 47 of the sewing device 20. Fig. 5 is a timing chart showing an operation example of the sewing device 20. Fig. 6 is a block diagram showing a control device 21A of the sewing device 20A according to another embodiment of the present invention. Fig. 7 is a flow chart showing the control operation of the control circuit 47 of the sewing device 200A. Fig. 8 is a timing chart showing an operation example of the sewing device 20A. Fig. 9 is a perspective view showing a part of the sewing apparatus 20B in another embodiment of the present invention. Fig. 1 is a block diagram showing the control device 1 of the conventional slitting and boring machine. [Embodiment] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Fig. 1 is a block diagram showing a control device 21 of a sewing device 20 in an embodiment of the present invention. Figure 2 is a perspective view of the slitting device. Figure 3 is a perspective view of an article made from the slitting device 20. The control device 21 is mounted on the sewing device 20 for sewing the tape to the fabric at 11 1294934, and is a device for controlling the sewing device 20. The slitting device 20 is a device having a sewing machine body 25 called, for example, an overlock sewing machine, and is a belt for the rubber band which can be imparted to the pants portion and the waist portion as shown in Fig. 3(3). The object 23 is sewn to the device constituting the fabric 22 of the panty body in the third (1) and third (2) drawings. The sewing device 20 includes a main body portion 4A, a supply portion 41, and a control device 21. The main body portion 4 includes a sewing machine body 25, a feed roller 26 close to the sewing machine body 25, and a feed motor 27. The supply portion 41 is a belt automatic transfer device supported by the support 42 above the body structure 40. The supply portion 41 includes a supply roller 28, a supply motor 29, and a reel support 43. The sewing machine body 25 serves as a sewing device, and the needle plate 31 and the pressure plate 32 are sandwiched by the cloth 22 placed on the horizontal support surface of the cloth support table 3 (Fig. 3(丨)_3(3); Figs. 1 and 2 The material is slightly omitted, and the cloth 22 is sewn by pushing the rack (not shown) to the A direction of the preset 15 while the needle (not shown) is reciprocated up and down in the needle driving direction. Further, in the squeegee device, the belt 23 is fed into the sewing machine body 25 and sewn to the cloth 22. The advance and seven rollers 26 are used to feed the ribbon into the machine body 25, specifically at the strip feed port 32A on the a-plate 32, having (9) roller sheets 20 35, 36. The outer diameter of the roller piece 35 is larger than that of the roller piece 36, and the two are free to rotate around the mutually striking shaft, and the two are elastically contacted and operated in conjunction. The belts 23 are rotated by the roller pieces 35, 36, and the belts 23 are fed. The feed motor 27 is a feed drive device for driving the feed roller 26, such as a stepping motor or the like. The feed motor 27 drives one of the roller pieces 35, % of 12 1294934, specifically to the roller piece 35 in this embodiment. Thus, the roller piece 36 is driven to rotate. The supply roller 28 is a supply means for supplying the ribbon 23 to the feed roller 26, and has a pair of rollers 38, 39. The ribbon 23 is wound around a freely rotatable bobbin 44 supported by the wire 5-axis support body 43. The supply roller 28 takes out the f-shape 23 from the bobbin 44 and supplies it to the feed roller %. The outer diameters of the rollers 38, 39 are substantially the same, and the two are free to rotate about the mutually parallel rotating shafts, and the two are in elastic contact and operate in conjunction. The two rollers 38, 39 are rotated by sandwiching the belt 23, and the ribbon 23 can be taken out. The supply motor 29 is a device for driving the supply roller 28, for example, a stepping motor or the like. The supply motor 29 drives any one of the rollers 38, 39, and specifically to the present embodiment, the roller 38 is driven. In this way, the roller 39 is subsequently driven to rotate. The control device 21 is provided with a control circuit 47. The control circuit 47 controls the feed motor 27 and the supply motor 29 in synchronization with the sewing operation of the slitting machine body 25. In the present embodiment, the feed speed of the strip 23 produced by the feed roller 26 is made coincident with the feed speed of the web 23 produced by the supply roller 28. Further, the feed motor 27 and the supply motor 29 are controlled to synchronize with the sewing operation, and at least the feed speed and the feed speed are allowed to push the rack and the cloth 22 at least at the feed speed and the sewing machine body. - the conveying speed of the conveyed belt (10) is the same 'and the feeding speed is lower than the conveying speed of the belt 23 which pushes the rack and the cloth 22 to the opposite, and is the same as the feed speed Or slightly (the same is better). Further, in addition to the sewing machine, the control circuit 47 also feeds the feed motor 27 and the supply motor 29 in accordance with the tension of the belt between the feed roller 26 and the supply roller 28 of 13 1294934. Take control. Specifically, in the present embodiment, when the tension detecting device 51 detects that the detected tension exceeds the preset tension value, the supply motor 29 is controlled to increase the supply speed of the belt 23 generated by the supply roller 28. 5 The control circuit 47 includes various parts such as a central processing unit (CPU), a read only memory (ROM), a P memory (RAM), a feed motor drive circuit, and a supply motor drive circuit. The control circuit 47 is disposed on the body portion 4 or on the supply portion 41 without problems, and can be designed in other ways. In the present embodiment, it is disposed below the body portion 4A. The sewing machine body 25 has a slit machine rotation signal generating device 5''. The sewing machine body 25 transmits a driving force to the driving shaft by a body driving device such as a motor, and the driving force transmits the driving force to the needle, the pushing rack, and the ferrule machine (the child-eighth) to drive them to rotate. . The sewing machine rotation signal generating means detects the rotation speed when the drive shaft rotates the sewing machine body 25, and sends a rotation signal Sr indicating the rotation speed to the control circuit 47. The slit rushing device 20 is provided on the supply portion 41, and has a tension detecting means 5 for detecting the tension. The tension detecting means 51 detects the tension of the belt 23 between the feed roller % and the supply roller 28. The tension detecting device 51 has a switch 52 and an operation piece 53 for performing a switching operation of the opening and closing state of the switch 52. The masterpiece 53 is supported to be freely displaceable (specifically, freely angularly displaceable) on which the ribbon 23 between the feed roller % and the supply roller ^ is wound. The operation piece 53 is displaced in accordance with the tension on the belt 23 between the feed roller % and the supply roller 28, and the tension on the belt 23 between the feed 6 and the 14 1294934 feed roller 28 When the predetermined tension is exceeded or the preset size is not reached, the switch 52 is operated to switch the open/close state. According to the above configuration, the tension detecting means 51 detects the tension between the feed roller % and the supply roller 28, and transmits the tension signal Ss indicating the detected tension to the control circuit 47. The control circuit 47 pulsates the feed motor to the feed motor in accordance with the rotational speed of the drive shaft by the sewing machine rotation signal generator 5, the cloth by the rotation signal Sr, and the detected tension from the tension detecting device 5 by the tension signal Ss. The feed drive signal (four) of the feed roller 26 is pulsed to the supply motor 29 to issue a supply drive signal 9 for controlling the supply roller 28. Thus, the control circuit 47 controls the feed motor 27 and the supply motor 29 in synchronization with the sewing operation. The slit, the blade 20 has a cutter Η for cutting the ribbon 23, and the slit 15 can be matched with Jingru, and the f-shaped member 23 is cut according to the length of the shape. The same is used to sew the fabric to the fabric. on. The cutter "is disposed between the feed roller (10) on the supply passage of the belt 23 and the pressure plate_ribbon supply port 32A. The slit device 2 () has an operation input device (not shown). According to the operation of the operator, an instruction to cause the cutter 55 to perform the cutting operation is input, and a signal indicating that the cutting operation has been input is transmitted to the control circuit 47. The control circuit 47 will cut off the signal when receiving the dragon signal. The tape cutter cutting signal Sc is transmitted to the cutter 55. The cutter 乂 cuts the belt 23 in accordance with the cutting command. Fig. 4 is a view showing the control operation of the control circuit 47 of the slitting device 2〇. 1294934. The control circuit 47 starts the sewing operation at the sewing device 20, and proceeds to the step a0 to start the control. In the step ai, it is determined whether the drive shaft of the sewing machine body 25 is in accordance with the rotation signal sr from the sewing machine rotation signal generator 50. In step a1, if it is judged that the drive shaft is in the rotating state, the process proceeds to step a2, and the control circuit 47 controls the feed motor 27 to rotate the feed roller 26 corresponding to the rotational speed of the drive shaft. 47, the feed motor 27 is controlled so that the feed speed of the feed roller 26 to the belt coincides with the conveyance speed of the belt 23 in the seaming machine body 25, and then proceeds to the control of step 1 In step a3, the control circuit 47 determines whether the detected tension exceeds the set tension based on the tension signal Ss from the tension detecting device 51. In step 33, if it is determined that the detected tension exceeds the set tension, the control circuit 47 performs the control of step a4. In the operation, the control circuit 47 controls the feed motor 29 for the supply of the feed roller 28 so that the feed speed of the supply roller 28 is higher than that of the belt 23 in the slit machine body 25. The speed of the speed of the crucible is such that the tension between the feed roller % and the supply roller 28 is lowered, and returns to the control action of step 2. In step a1, if it is judged that the drive shaft has not been rotated, the control circuit 47 executes 2, the control action of step ^ is performed. In step ^, the control circuit 47 controls the feed motor 27 to stop the feed roller 26, and controls the supply horse = to stop the supply roller 28 Stop, then return to the step

System action. I In step a3, if it is judged that the detected tension has not reached the set tension, the control 16 1294934 circuit 47 performs the control action of step a6. In the step, the control circuit 47 rotates the supply service wheel 28 to the rotational speed of the drive shaft for the supply of the horse. Specifically, the control circuit 47 controls the supply motor 29 to continue to supply the escaping wheel 28 to the belt speed of the belt-shaped (10) supply speed disk 5 in the sewing machine body 25, and then returns to the step al. Control action. When the control circuit 47 receives the above-described control, the control circuit 47 commands the disconnection (4) to cut the ribbon 23 upon receiving the "breaking operation" from the operation input device. (1) The 5th is the timing of the operation example of the mobile device 2G. At time t〇, the seam rushing machine body 25 stops working, and the detected tension detected by the tension detecting device 51 does not reach the set tension. This state will continue until the time 靡, and the driving seam is started between time t1 and time t5. The body 25 is operated, and the milk 5 stops the sewing machine body 25. In this example, between the time of the ship, the tension is detected from the time 15 t3 to exceed the set tension. Between the time t0 and t1, the control circuit 47 receives The rotation signal of the transfer Q of the table (4) secret issued by the slitting machine rotation signal generator 5 is simultaneously received, and at the same time, the control circuit 47 receives that the detected tension has not reached the set tension = tension signal Ss. Time t0 to tl Between the two, the drive shaft of the sewing machine body 25 stops traveling for 20 revolutions. When the tension detecting device 51 detects that the set tension has not been reached, the control circuit 47 drives the feed roller 26 to stop the rotation speed. Signal Sd27 The feed motor 27 is sent to the supply motor 29 in order to stop the supply roller 28, and the supply drive signal Sd29 that causes the rotation speed to become 〇. "17 1294934 k between t1 and time t2, the control circuit 47 receives The rotation signal of the drive shaft rotation speed of the drive shaft is N25, and at the same time, the (47) circuit 47 is connected to the wire and the tension of the set tension is k竣Ss. 5 Between 11 and 12, the drive shaft of the sewing machine body 25 is driven to operate. When the tension detecting means 51 detects that the tension has not reached the set tension, the control circuit 47 drives the feed of the rotation speed of the feed roller 26. The signal Sd27 transmits, ', the mouth, and the σ motor 27 so that the feed speed of the feed roller 26 coincides with the transport speed in the sewing machine body 25. Thereby, the feed motor 27 is activated so that the output shaft can be rotated at the rotational speed N27 corresponding to the rotational speed indicated by the feed drive signal Sd27, and the feed roller % is driven to rotate at the rotational speed indicated by the feed drive signal %27. Turn. Between time t1 and time t2, the control circuit 47 transmits a supply drive signal Sd29 indicating the rotational speed of the supply roller 28 to the supply motor 29, so that the supply speed for the I5S; decay wheel 28 is generated by the idler machine body. The transfer speed remains the same. Thereby, the supply motor 29 is activated so that the output shaft can be rotated at the number of revolutions 291 corresponding to the number of revolutions indicated by the supply drive signal Sd29, and the supply roller 28 can be driven to rotate by the number of revolutions indicated by the supply drive signal Sd29. - between day 12 and 13, the control circuit 47 receives the rotation signal ^ indicated by the slitting machine signal generating means 50 indicating that the rotational speed of the drive shaft is N25, and the control circuit 47 receives the indication that the detected tension exceeds the set tension. The tension signal Ss ° between the times t2 and t3, the drive shaft of the sewing machine body 25 rotates, and if the tension 18 1294934 force detecting device 51 detects that the set tension is exceeded, the control circuit will drive the feed of the feed roller 26 The signal 8 (127 is sent to the feed motor 27 to cause the feed speed of the feed roller 26 to be transmitted to the conveying speed in the sewing machine body 25, and the feed motor 27 is activated to allow the output shaft to drive with the feed 5 The rotational speed N27 corresponding to the rotational speed indicated by Sd27 is rotated, and the feed roller 26 is driven to rotate the rotational speed indicated by the feed drive signal gjd27. From time t2 to time t3, the control circuit 47 reduces the feed roller % and the supply roller. The tension of the 28 strips 23 transmits the supply drive signal sd29 to the supply motor 29, which supplies the drive signal 8 (129 indicates that the predetermined increase 10 is added to the supply speed to supply the feed roller 28 The new rotation speed is formed after the rotation speed of the supply roller 28 is kept at the same speed as the conveyance speed in the sewing machine body 25. Thereby, the supply motor 29 is driven to rotate the output shaft at the rotation speed N292 corresponding to the rotation speed indicated by the supply drive signal Sd29. (The rotational speed N292 herein increases the rotational speed Δ 15 N29 corresponding to the increased rotational speed of the supply roller 28 to the rotational speed formed at the rotational speed N291 between the time t1 and the time t2), and drives the supply roller 28 to The rotation speed indicated by the supply drive signal sd29 is rotated. At time t3, the time when the tension is detected from the state exceeding the set tension to the state where the set tension is not reached, and the predetermined time TA has elapsed, from the time t3 to the time t4. Between the control circuit 47 receives the rotation signal Sr from the sewing machine rotation signal generator 50 indicating that the rotation speed of the drive shaft is N25, and the control circuit 47 receives the tension signal Ss which detects that the tension has not reached the set tension. From time t3 to time t4 Drives the drive shaft of the sewing machine body 25, and the tension detecting device 51 passes the setting from the exceeding the set tension to the set tension. 9 1294934 In the case of a fixed time ,, the control circuit 47 transmits a feed drive signal Sd27 indicating the feed roller speed to the feed motor 27 so that the feed speed of the feed roller % and the conveyance speed in the sewing machine body 25 Keep the same. Start the feed motor 27 so that the output shaft can be rotated at the speed corresponding to the feed drive signal s, which is shown in Table 5, and the speed indicated by the feed drive signal Sd27. To the roller 26. At time t3 to t4', the control circuit 47 causes a complicated change in the control state in order to prevent the detection of the tension detecting means 51, and transmits the supply drive signal Sd29 to the supply motor 29, which supplies the drive signal § (129 It is shown that the pre-10 疋 increase rotation speed is added to the new rotation speed which is formed after the rotation speed of the supply roller 28 which matches the supply speed of the supply roller 28 and the conveyance speed in the slit machine body 25. Thus, the supply motor 29 is activated to rotate the output shaft at the rotational speed indicated by the supply drive signal Sd29 (i.e., the rotational speed N292), and the supply roller 28 is rotated by the rotational speed indicated by the supply drive signal Sd29. This will cause the system to lag. The state from time t4 to time t5 is the same as the state between time t1 and time t2, and the control method is also the same. The state after time t5 is the same as the state between time t0 and time t1, and the control method is also the same. In the example shown in Fig. 5, in order to facilitate understanding, the drive shaft of the sewing machine body 25 is rotated at a constant number of revolutions, and of course, the control can be performed in the same manner when the time is changed. The control circuit 47 determines whether or not the detected tension exceeds the set tension after obtaining the detected rotational speed between the drive shaft rotational speed and the feed roller 26 and the supply roller 28. If the detected tension exceeds the set tension, the control circuit 47 controls the feed horse 20 1294934 up to 27 and the supply motor μ to reduce the tension so that the feed speed of the feed roller 26 and the transport speed in the machine body 25 are not sewn. Consistently, the dragon causes the supply speed of the supply roller 28 to reach a speed higher than the conveying speed in the % of the slitting machine body by a predetermined set speed. 5 If the detected tension does not reach the set tension, the control circuit 47 judges whether or not the set time TA has elapsed after the detection of the tension from the state exceeding the set tension to the state below the set tension. The control device 21 is provided with a timer by which the time after the detected tension is changed from the state in which the tension is exceeded to the state in which the tension is set to be lower than the set tension is used. The timer 10 has an initial value of infinity at the start of control, and is set to be larger than the set time TA, and the timer is reset when the detected tension is changed from the state in which the tension exceeds the set tension to the state in which the tension is lower than the set tension. When it is judged that the set time TA has elapsed, the control circuit 47 controls the feed motor 27 and the supply motor 29 so that the feed speed of the feed roller % coincides with the conveyance speed in the sewing machine body 25, and The supply speed of the supply roller 28 is made to coincide with the conveyance speed in the sewing machine body 25. If it is judged that the set time TA has not elapsed, the control circuit 47 controls the feed motor 27 and the supply motor 29 to lower the tension so that the feed speed of the feed roller % coincides with the conveyance speed in the sewing machine body 25, and The supply speed of the supply roller 28 is brought to a speed higher than the conveyance speed in the sewing machine body 25 by a predetermined set speed. The control circuit 47 will repeat the series of actions described above. In the present embodiment, the control device 21 of the sewing apparatus 20 functions as a control circuit 47, and the feed motor 27 and the supply motor 29 can be synchronized with the sewing operation of the sewing machine body 25 by the 2112994934. The feed roller 26 and the supply roller 28 can be synchronized with the sewing operation to correlate them. Thus, it is possible to prevent the change in the tension 5 of the belt 23 between the feed roller 26 and the supply roller 28 by the operation of the feed roller 26 and the supply roller 28, and it is also possible to prevent the feed roller 26 from being prevented. The tension of the belt 23 between the supply roller 28 and the supply roller 28 changes the tension of the belt 23 fed into the sewing machine body 25, and the tension is kept substantially constant. Here, it is not necessary to supply the belt 23 at a high speed by the supply roller 28 as in the prior art, so that the occurrence of the electrostatic conduction due to the high-speed feed of the ribbon on the feeding device can be prevented. Therefore, it is not necessary to separately provide a device for preventing the occurrence of entanglement, thereby effectively preventing the sewing device 2 from becoming larger in size and also facilitating maintenance. Further, the feed motor 27 and the supply motor 29 are controlled so that the feed speed of the belt 23 of the feed roller 26 is equal to or not higher than the feed speed of the belt 23 15 of the supply roller 28, By using the detected tension, the supply and feeding of the belt 23 can be carried out by different devices in a month, and the length of the belt 23 between the supply device and the feeding device can be kept constant or substantially constant. By detecting the tension, it is possible to reliably maintain the length of the belt 23 between the feeding device and the feeding device constant or substantially constant. 2) When the feed speed is the same as the feed speed, the length of the belt 23 between the supply device and the feed device can be made constant. This ensures that the tension of the belt 23 between the feed roller 26 and the supply roller 28 is constant, does not affect the tension on the belt 23 entering the sewing machine body 25, and can ensure the ribbon entering the sewing machine body 25. The tension value on 23 is fixed. In the case of 22 1294934, the control process is based on the detection of the tension, so that when the tension of the belt 23 between the feed roller 26 and the supply roller 28 is increased due to an external cause, the band can be corrected in time. The tension of the object 23 ensures that the tension is constant. It is of course best to keep the feed rate in line with the feed rate, but the difference is 5, and the feed rate can be increased a little faster than the feed rate, and the feed speed can be changed according to the detected tension. Thus, the supply motor 29 can be controlled in accordance with the tension of the belt 23 between the feed roller 26 and the supply roller 28, so that the tension of the belt 23 between the feed roller 26 and the supply roller 28 changes. At this time, the supply motor 29 can be controlled to change the supply speed of the supply roller 10 28, and the tension of the belt 23 between the feed roller 26 and the supply roller 28 can be corrected. Therefore, with a simple structure, the length of the belt 23 between the supply device and the feeding device can be kept substantially constant. This structure is particularly effective particularly in the case where the feed speed of the feed roller 26 is slightly exceeded by the supply speed of the supply roller 28. The tension detecting plug 51 can be realized not only by detecting whether the tension exceeds the set tension, but also the tension on the belt 23 between the feed roller % and the supply roller 28 does not appear large. The change can keep the tension substantially constant. 2 is a block diagram of a control device 21A of the sewing device 2A in another embodiment of the present invention. The embodiment shown in Fig. 6 is similar to the embodiment shown in Fig. 5, and the corresponding portions are denoted by the same reference numerals, and the description of the same portions will be omitted. In the sewing device 20A of the present embodiment, the feed roller 26 can be freely switched between the following two complaints, that is, the ribbon 23 can be fed into the feeding state of the sewing machine body 23 1294934 25, and the sewing machine body can be terminated. The pass-through state of 25 is fed into the ribbon and allows the passage of the ribbon 23. The roller pieces 35, 36 are freely switchable in contact with each other or in a separated state, and the means for the roller pieces 35, 36 to be in contact with each other are in a feed state, and the state in which the roller pieces 35, 36 are separated from each other is in an allowable state. In the sewing device 20A, the sewing machine rotation signal 50 may be set or not provided. In the present embodiment, neither of the motors 27, 29 is used in the control. In the sewing device 20A, the tension detecting device 51 continuously detects the tension on the belt 23 between the feed roller 26 and the supply roller 28, and transmits the tension signal Ss indicating the tension to the control circuit 47. The tension detecting device 51 has a free displacement member, a ribbon 23 wound thereon, and an operating member that can be displaced by the tension on the belt 23 and a position detecting sensor for detecting the position of the operating member. Composition. In the present embodiment, the supply motor 29 can drive the supply roller 28 in both the forward and reverse directions. In the slit and the blade skirt 20A, when the slitting operation of the slitting machine body 25 is in the first operational state set in advance, and in the second operational state different from the third operational state, the control circuit 47 The control state will be switched to the first control state and the second control state accordingly. In the second control state, the control circuit 47 sets the feed roller 26 to the two-turn operation of the feed motor 27 while passing the state, and controls the supply motor 29 to supply the ribbon 23 from the supply roller 28. In the second control state day temple, the control circuit 47 sets the feed roller % to the transfer state and controls the feed motor 27 to supply the feed roller 26 to the belt 23. The first operational state of the sewing machine body 25 is a state in which the belt 23 is sewn to the cloth 22. The second operational state of the ribbed machine body 25 means that the fabric 24 1294934 22 is sewn, and the ribbon 23 is cut by the cutter 55 to prepare a state in which the tape is sewn to the back fabric. 5 10 15 20 The sewing apparatus 20A of the present embodiment is provided with a switching instruction means 6A for transmitting a switching signal Sw indicating an instruction to switch the control state to the control circuit 47. The switching instruction device 6 发送 can transmit the command of the switching (four) state to the control circuit 47 ′ according to the operation of the operator, and can also send the instruction for switching the control state to the (four) circuit 47 according to the preset (4) program, and the actual wipe, The switching command skirt (6) has an input device that is operated by the operator's hand (for example, can be operated by a foot), and transmits an instruction to switch the control state to the control circuit 47 in accordance with the operation of the input. The input device can input various commands, that is, the line and the stop of the machine body 25, the cutting of the cutter 55, the opening and closing of the feed roller 26, and the cutting of the belt (four). After the break, the π-shaped material 23 is again sent to the ribbon supply port of the pressure plate, and according to these commands, the control circuit 47 can control each device. In the male embodiment, the control circuit 47 is controlled in synchronization with the operating state of the sewing machine body. Fig. 7 is a flow chart showing the control operation of the control circuit 47 of the sewing device 2. The control circuit 47 causes the slitting device 2GA to start the slitting process, and proceeds to the step_start control to determine whether the operation state of the assisting machine body 25 can be in the first operational state or the second operational state. This judgment is made based on the ^=令装置_instruction. Specifically, in order to be able to sew the tape 23 to the material while moving the cloth 22, only the time when the operation input device is operated is in the first operation state, and the remaining time 25 1294934 is determined as the second operation state. . In step bl, if the result of the determination is the third operational state, the control circuit 47 proceeds to step b2 to start the feed roller 26 in order to control the first control state, and stops the operation of the feed motor 27 in step b3. Go to step 5 of 134 for the control action. In the step, the control circuit 47 controls the supply motor 29 based on the magnitude of the detected tension indicated by the tension "ss" generated by the tension detecting garment 51. Specifically, the control circuit 47 controls the supply motor 29 to supply the supply roller. 28 is rotated so that the tension on the belt 23 between the feed roller 26 and the supply roller 28 is maintained at a force of 10 sheets (i.e., a predetermined set tension) suitable for sewing onto the cloth 22. After the operation of the step b4 Proceeding to step b5, the control circuit 47 determines whether or not the switching operation of the control state has been performed. That is, it is determined whether or not an instruction to stop the sewing machine body 25 from being sewn is input, and thus it is determined whether or not the sewing machine-like operation state has been changed. When the circuit 47 determines that the switching operation 15 has been performed, the circuit 47 returns to the control operation of the step bl, and if the switching operation is not performed, the control operation returns to the step b4. The correction is performed in the second operation state, and the control circuit 47 is in the second operation state. The control state is controlled, and the step _ is closed to feed the roller 26, and 20 is entered into the step Cong cutter 55 to cut the strip shape (10). (4) The road 47 enters the lion and controls the feeding horse: 1 The feeding roller 26 rotates, and then the step _(4) is performed. (4) The control action in the mrb4 is the same, and the control circuit 47 supplies the motor 29 according to the detected tension. After the execution of the action in the lion, the control circuit 47 enters the step of the lion's rifle 26 1294934 彳:==: re-feeding of the belt 23. It is judged whether the front end portion of the side of the extension is 3 = The extension of the pulley 28 to the spool 44 is 5 10 15 20. According to the operation of the input device, the press plate 32 is pressed. The control circuit 47 杳, 隹 叔 叔 已经 已经 已经 已经 已经 已经 已经 。 。 。 。 When the circuit 47 checks the control operation in the step bU, the circuit proceeds to the step_control action. If the frequency feed has not been terminated, the process returns to step b11, and the control circuit 47 supplies the feed motor 27 and the feed motor 27. The motor or the motor is configured to stop the control operation of the feed roller 26 and the supply roller 28 in the operation step bl2. In the step Μ2, the control circuit determines whether the control state is performed as in the step b5. Switching operation. If the control circuit 47 determines that the switching operation has been performed, it returns When it is judged that the switching operation has not been performed, the process returns to step bl2: Control operation. Fig. 8 is a timing chart showing an operation example of the sewing device 2A. At the time t〇A sewing machine The machine body 25 is in the second operation state, the control circuit 47 is in the second control state, the sewing machine body 25 stops rotating, and the tension detecting device Μ detects that the tension has not reached the set tension. This state continues until time t18, at time t18, the sewing machine body 25 The operation state is switched to the first action state, and the control state of the control circuit 47 is switched to the first control state. The sewing machine body 25 is driven from the time t18 until the time t2A, and the operation of the sewing machine body 25 is terminated at time t2A. During the period from time tla to time t2A, the tension detecting means 51 detects that the tension exceeds the set tension. Immediately, the supply motor 29 is controlled in accordance with the detected tension to rotate the supply roller 28 to achieve a supply speed at which the tension of 27 1294934 can be restored to the set tension. At this time, the rotational speed N291A of the output shaft of the supply motor 29 is the speed corresponding to the transport speed in the sewing machine body. At the time t2A, the operating state of the sewing machine body 25 is switched to the second operation 5 state, and the control state of the control circuit 47 is shifted to the second control state. Further, at time t2A, the cutter 55 starts to operate, and at time t3A, the cutter 55 stops operating.

In the second operation state, the belt 23 is again fed into the sewing machine body 25, and is prepared for the sewing operation below. In the second operation state and the time t3A to t6A in the second control state 10, the feed motor 27 drives the output shaft to rotate at the rotational speed N27A to rotate the feed roller 26 at a predetermined rotational speed. At this time, the tension detecting means 51 detects that the tension exceeds the set tension. Then, the supply motor 29 is controlled to rotate the supply roller 28 in accordance with the detected tension to achieve a supply speed at which the tension can be restored to the set tension. In the case of the 15-body case, for example, from the time t3A to the time t4A and the time t5A to the time t6A, the detected tension is larger than the tension detected from the time t1 to the time t2, and in order to restore the tension, The supply motor 29 drives the supply roller 28 to rotate, and rotates its output shaft at the number of revolutions N292A. Further, since the tension is increased between the times t4A and t5A, the supply motor 20 29 drives the supply roller 28 to rotate, and rotates the output shaft at the number of revolutions N293A. It remains in the second operational state and the second control state after time t6A. Between time tOA and tlA, when the drive shaft stops rotating, the control circuit 47 receives the tension signal Ss indicating that the detected tension exceeds the set tension. When the time tOA to tlA is in the second control state, the drive shaft of the sewing machine body 25 stops 28 1294934, and when the tension detecting device 51 detects the set tension, the control circuit 47 stops the operation of the supply roller 28. The supply drive signal Sd29 that sets the number of revolutions to zero is sent to the supply motor 29. Between time t1 and t2A, when the drive 5 shaft is rotated at the rotation speed N25A as indicated by the solid line in Fig. 8, the control circuit 47 receives the tension signal Ss indicating that the tension value exceeds the set tension. %1 is in the first control state between 1st and 12th, and the drive shaft of the sewing machine body 25 is rotated at the rotation speed ^^258. When the tension detecting device 51 detects that the tension exceeds the set tension, the control circuit 47 follows the detection. The tension sends the supply drive signal Sd29 indicating the rotational speed to the supply motor 29 in order to allow the supply roller 28 to reach the rotational speed at which the tension can be returned to the set tension. In this way, the supply motor 29 is started to rotate the output shaft at the number of revolutions N29lA, that is, the number of revolutions corresponding to the number of revolutions indicated by the supply drive signal Sd29, and the supply roller 28 is driven to rotate at the number of revolutions indicated by the supply drive signal. move. In the present embodiment, when the sewing machine body 25 performs sewing, the feed roller 26 and the feed motor 27 stop the shaft, and the supply motor 29 is not controlled by the rotation speed at which the vehicle body 25 drives the vehicle, but is controlled in accordance with the detected tension. As shown by the broken line in Fig. 8, the supply motor 'assuming that the rotational speed of the drive shaft, that is, 20 is changed,' does not directly control the supply motor 29 in accordance with the change. Of course, even if the detected tension changes in accordance with the change in the rotational speed of the supply drive shaft, as in the imaginary line in the eighth, the control motor 29 is controlled to change the supply in accordance with the imaginary line. Use the motor output shaft speed. 29 1294934 After the sewing machine body 25 stops sewing the belt 23 on the cloth 22 between time t2 and time t3, the control circuit 47 controls the feed motor 27 and the supply motor 29 to feed the feed roller 26 and supply The rotation is stopped by the roller 28 and the cutter 55 is operated. 5 When the second control state is between time t3 and time t4, and the belt 23 is fed into the sewing machine body 25, and the detected tension exceeds the set tension, the control circuit 47 drives the feed indicating the rotation speed of the feed roller 26. The signal Sd27 is sent to the feed motor 27 so that the feed speed of the feed roller 26 reaches a predetermined feed speed. Thereby, the feed motor 27 is actuated to rotate the output shaft at a rotational speed corresponding to the rotational speed indicated by the feed drive signal Sd27 at 10 rotational speed N27A, and to drive the feed roller 26 at the rotational speed indicated by the feed drive signal Sd27. . Between time t3A and time t4A, the control circuit 47 transmits a supply drive signal Sd29 indicating the number of rotations of the supply roller 28 to the supply motor 29 so as to maintain the feed speed of the supply roller 28 and the feed speed of the feed roller 26. Consistent. Thereby, the supply motor 29 is started to rotate the output shaft at the number of revolutions N291A, that is, the number of revolutions corresponding to the number of revolutions indicated by the supply drive signal Sd29, and the supply roller 28 is driven to rotate by the number of revolutions indicated by the supply drive signal Sd29. 20 is in the second control state between time t4 and t5, and in the case where the belt 23 is fed into the sewing machine body 25, 'the detection tension is larger, the control circuit 47 sends a feed drive signal indicating the rotation speed of the feed roller 26. 8 (127 is sent to the feed motor 27 to allow the feed speed of the feed roller 26 to reach a predetermined feed speed. Thereby, the feed motor 27 operates to cause the output shaft to rotate at a speed of N27A, 30 Ϊ294934 The rotational speed corresponding to the rotational speed indicated by the drive signal Sd27 is rotated 'and the feed roller 26 is driven at the rotational speed indicated by the feed drive signal Sd27. Between the times t4A and t5A, the control circuit 47 supplies the feed roller 26 with the feed. The tension on the belt 23 between the rollers 28 is lowered, and a predetermined increase in the number of revolutions of the supply roller 28 that can match the feed speed of the supply roller 28 with the feed speed of the feed roller 26 is formed. The new rotational speed transmits the supply drive signal Sd29 indicating the new rotational speed to the supply motor 29. Thereby, the supply motor 29 operates to drive the output shaft to supply the rotational speed indicated by the drive signal Sd29. The corresponding rotational speed N293A, that is, the rotational speed N292 formed by the increased rotational speed ΔΝ29Α corresponding to the increased rotational speed of the supply roller 28 plus the rotational speed N291 at the time t1 to t2, is rotated, and is driven at the rotational speed indicated by the supply drive signal Sd29. The state between the time t5 and the time t6A is the same as the state of 15 between the times t3A and t4A, and the same control as the time t3 to t4 is performed. Further, the state after the time t6 and the time t0A to tlA The same control is performed between the times tOA and TLA. The control circuit 47 determines whether it is in the first control state or the second control state. If it is in the first control state, it is determined whether the cloth detection tension exceeds the setting 20 The tension is simultaneously judged whether or not the sewing machine body 25 has sewn the belt 23 to the cloth 22. The control circuit 47 terminates the operation of the feed motor 27 and the cutter 55 when the control state of the brother 1 is detected. In the second control state, the control circuit 47 controls the supply motor 29 to supply the ribbon 23 based on the detected tension, and supplies the supply pulley 28 to 31 1294934. The speed of the _ tension reaches the set tension. When the second control state is detected, according to the input of the input device, 'Nasaki 1155 is operated, or the squad and the supply of the bribes are used. At this time, the control circuit performs the detection of the tension, and controls the supply motor 29 to supply the belt 23 so that the supply roller lion supply speed can cause the detected tension to reach the set tension. The control circuit π will repeatedly perform the series of control operations. In the present embodiment, the control device 21A of the sewing device 20A is the same as the control device 21A of the sewing device 1 and 20, and the feed motor 27 and the supply motor are held in synchronization with the sewing operation of the machine body 25. The control is performed by the single control circuit 47, so that the feed roller 26 and the supply roller 28 can be synchronized with the sewing operation, and the related control can be performed. Thus, it is possible to prevent the tension on the belt 23 between the feed roller 15 and the supply roller 28 from being changed by the operation of the feed roller 26 and the supply roller 28, and the supply roller 26 and the supply are prevented from being supplied. The tension on the belt 23 between the rollers 28 is changed, and the tension applied to the belt 23 in the sewing machine body 25 is changed, so that the tension can be kept constant. Further, it is not necessary to feed the belt 23 at a high speed by the supply roller 28 as in the prior art, so that it is possible to prevent static electricity from being generated by high-speed feed and to wind the ribbon onto the supply device. Therefore, it is not necessary to provide a device for preventing the occurrence of the winding phenomenon, which not only effectively prevents the size of the sewing machine from becoming large but also contributes to machine maintenance. In the second control state, the feed speed of the feed roller 26 to the belt 23 is adjusted to be the same as the feed speed of the supply roller 28 to the belt 23 or, for example, only exceeds 〇〇/〇. Within 〇%, the feed motor 27 and the supply motor 29 are controlled by the detected tension, so that the supply and feed of the belt 23 can be performed by different devices, and the belt between the feeding device and the supply device can be carried out. The length of the body 23 remains constant or substantially constant. By using the detected tension, it is possible to reliably maintain the length of the belt 23 between the feeding device and the supply device constant or substantially constant. In the case where the feed speed is the same as the feed speed, the length of the belt 23 between the feed device and the supply device can be kept constant. Thereby, the length of the belt 23 between the feeding device 10 and the feeding device can be kept constant, so that the tension on the belt 23 fed into the sewing machine body 25 can be prevented from being affected, and the month b can be enough to feed the seam. The tension on the belt 23 in the rake machine body 25 is kept constant. In this case, the control is performed according to the detected tension, and the tension can be applied to the belt when the tension on the belt 23 between the feed roller 26 and the supply roller 28 is increased due to the influence of the outside. The change in the tension of the object 23 is corrected to surely maintain the tension constant. It is of course ideal to keep the feed rate in line with the feed speed. However, even if the feed rate is not uniform, the feed rate can be increased by a little faster than the feed rate, and the feed speed can be changed according to the detected tension. Thus, the supply motor 29 can be controlled in accordance with the tension of the belt 23 between the feed rollers 26 and 20 supply rollers 28, so that the tension of the belt 23 between the feed roller 26 and the supply roller 28 occurs. When changing, the supply motor 29 can be controlled to change the supply speed of the supply roller 28, and the tension of the belt 23 between the feed roller 26 and the supply roller 28 can be corrected. Therefore, with a simple structure, the length of the belt 23 between the supply device 33 1294934 and the feeding device can be kept substantially constant. This configuration is particularly effective when the feed speed of the feed roller 26 is slightly controlled beyond the supply speed of the supply roller 28. The tension detecting device 51 can be realized by a simple five-structural method of detecting whether or not the tension exceeds the set tension, and does not excessively change the tension of the belt 23 between the feed roller % and the supply roller 28, and can make the tension It will remain roughly the same. Further, according to the seam rushing operation of the slitter body 25, the feed roller % is switched between the two states, that is, the belt 23 is conveyed to the feed state in the seaming machine body 25, and the belt is stopped. The aggressor pulls the body of the body for $1〇 and allows the passage of the belt 23 to pass the allowable state. When the sewing machine body 25 is in the first operation state, the control circuit 47 is set to the second control state, the feed roller 26 is allowed to pass, and the rotation of the feed motor is terminated, and the supply roller 28 is supplied with the belt. When the sewing operation is in the second operation state, the control circuit 47 is set to the second control state, the feed roller % 15 is fed, and the feed roller 26 is driven by the feed motor 27 to be strip-shaped. The feed motor 27 that drives the feed roller 26 and the supply motor 29 that drives the supply roller 28 are controlled by one control circuit 47, so that it can be switched in accordance with the sewing operation of the sewing machine body 25. The operation of the roller 20 is given to the state of the roller 20, whereby the feed roller 26 can be driven to be controlled accordingly, which is more convenient to use. The sewing cloth action is in a sewing state in which the ribbon 23 is sewn to the cloth 22, so that The feed roller 26 is in the allowable state while the rotation of the feed motor 27 is stopped, and the belt Μ is fed through the supply roller Μ. After the sewing operation on the cloth 34 1294934 22 is stopped When the belt 23 is cut and the ready state of the belt 23 is sewn to the rear fabric, the feed roller is fed to the feed state, and the feed roller 26 is driven by the feed motor 27 to carry the belt. The material 23 is fed in. 5 The cloth can be fed by the feed roller 26 as long as it can be fed in the ready state, and the feed roller 26 does not need to be supplied with tension into the sewing machine body 25. Therefore, the feed motor 27 does not need to impart a large output torque such as tension to the belt 23 by the feed roller 26, and can be downsized. Fig. 9 shows another embodiment of the present invention. A perspective view of a portion of the sewing device 20B in the example. The embodiment shown in Fig. 9 is similar to the embodiment shown in Fig. M, and the corresponding portions are denoted by the same reference numerals, and only the differences are explained here, and the same is omitted. In the foregoing embodiment, the sewing machine body 25 in which the slits 15 are placed in 2, 2, and 8 is called an overlock sewing machine. In the present embodiment, the towel body 25 is a belt shape| A trim, that is, a flat stitch used to sew the ribbon 23 onto the cloth 22. The rushing machine (the needle is omitted in the drawing) is omitted. The sewing machine 2 (10) is the same as the control of each of the above embodiments, and the same effect can be obtained. The range (4) can appropriately adjust the structure. The effect of the invention According to the present invention, in synchronization with the operation of the device, the supply drive device and the feed drive device are controlled by the (10) control device, so that the supply can be made. The device and the feeding device are synchronized with each other, and they are controlled by 35 1294934. In each case, it is possible to prevent not only the feeding device and the feeding device, but also the feeding device and the feeding device. The tension on the inter-belt <« can prevent the change in the tension 5 on the belt fed into the slitting device due to the change in the tension on the belt between the feeding device and the supply shock, Keep the tension constant. i and 'It is not necessary to supply the ribbon at a high speed by the supply means, so that it is possible to prevent static electricity from being generated by the high-speed supply and to prevent the wave of the ribbon from being wound. Therefore, there is no need to provide a separate device for preventing entanglement, such as watering, etc., thereby preventing the size of the smashing device and also facilitating maintenance. According to the present invention, the feed drive unit and the supply drive unit are controlled to be advanced. Since the feeding speed of the belt of the apparatus is the same as or slightly exceeds the feeding speed of the belt of the supply device, the feeding and supply of the belt can be performed by different devices, and the feeding device and the feeding device can be used. The length of the inter-belt 15 remains constant or substantially constant. In this way, the tension on the belt between the feeding device and the smashing device can be kept substantially constant, which can prevent the tension on the belt which is inserted into the sewing device from being affected, so that it can be fed into the seam rushing device. The tension on the ribbon remains constant. The supply device 20 is controlled according to the tension on the belt between the supply device and the feed device, and thus the tension on the belt between the feed roller and the supply roller is affected by external factors. It is possible to control the supply speed of the supply drive device to change the supply device, so that the tension of the belt between the feed device and the supply device can be corrected. In this way, the tension on the belt between the feed device and the supply device can be surely maintained at 36 1294934. According to the present invention, when the detected tension between the feeding device and the supply device exceeds a predetermined set tension, the supply speed of the belt of the supply device increases, and the supply amount becomes large. Thus, at least the tension on the belt between the feeding device 5 and the feeding device can be prevented from being excessively high. Thus, the tension on the belt between the feed device and the supply device can be corrected to be substantially constant. According to the present invention, depending on the squeegee action of the slitting device, between the state in which the ribbon is fed into the sewing device and the permission to stop the feeding of the ribbon into the sewing device and the passage of the ribbon is allowed. Switch the feed device. When the sewing operation is in the first predetermined operating state, the control device is brought into the i-th control state, the feeding device is switched to the permission state, and the operation of the feed drive device is stopped, and the belt is supplied by the supply device. When the sewing operation is in the second operation state, the control device is caused to enter the second control state, the feed I is switched to the feed state, and the feed device is driven by the feed drive device to feed the tape. The feed drive means for driving the feed means and the supply drive means for driving the supply means are controlled by the tamping control means, so that the operation state of the feed means can be switched in accordance with the sewing operation of the slit rushing means. This makes it possible to drive the feed unit as needed, making control easier. According to the U s rib cloth cloth cloth cloth movement in the sewing state of sewing the belt to the cloth, the feeding device is switched to pass the permission sorrow while stopping the operation of the feed drive device, and using the supply device Supply ribbon. After sewing on the fabric, cut the ribbon and prepare 37 1294934. When the strip is ready for sewing on the fabric, the feed device is switched to the feed state and driven by the feed drive. The feeding device feeds the ribbon. Thereby, the feeding device can feed the belt in the ready state, and the feeding device does not need to transmit the tension to the belt fed into the sewing device. Therefore, the feed drive device does not require a large output torque such as the tension applied to the belt by the feed device, and the size can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram showing a control device 10 21 of a sewing apparatus 20 according to an embodiment of the present invention. Fig. 2 is a perspective view showing the sewing device 2''. Fig. 3 is a perspective view showing an article sewed by the sewing device 2. Fig. 4 is a flow chart showing the control operation of the control circuit 47 of the sewing device 20. 15 Fig. 5 is a timing chart showing an operation example of the sewing device 20. Fig. 6 is a block diagram showing the twisting device 21A of the sewing apparatus 2A according to another embodiment of the present invention. Fig. 7 is a view showing a control operation and a flowchart of the control circuit 47 of the sewing device 20A. 2 0 々 In addition, Fig. 8 is a timing chart showing an operation example of the sewing device 2A. Fig. 9 is a perspective view showing the sewing apparatus 2 in the other embodiment of the present invention. ° Fig. 10 is a block diagram showing a control device of a conventional sewing machine. [Main component representative symbol table of the drawing] 38 1294934 发明, invention description bu··control device 2···sewing device 3···sewing machine body 5···feed roller 6···feed motor 7...supply Roller 8···Supply motor 11...Control circuit 12...Control circuit 13...Sewing machine rotation signal generator 14...Tensor device 20...Sewing device 20A...Sewing device 21...Control device 21A...Control device 22...cloth 23... Ribbon 25... Sewing machine body 26... Feed roller 27... Feed motor 28... Supply roller 29... Supply motor 30... Support table 31... Needle plate 32... Platen 32A... Ribbon feed port 35... Roller plate 36...roller 38,39···roller 40...main part 41...supply part 42...pillar 43...support 44... spool 47...control circuit 50...sewing machine signal generating device 51...tension detecting device 52...switch 53... Operating sheet 55...cutter 60...switching command device

Ss...tension signal

Sd29... supply drive signal

Sd27... feed drive signal

Sc... cut off the signal

Sr... rotation signal 39

Claims (1)

1294934 Xinkou, Shen I靑 patent scope And a control device for controlling the sewing device, wherein the sewing device comprises: a slitting unit; and the feeding device is configured to feed the ribbon into the sewing unit feed driving device. a device for driving the feeding device; a feeding device for supplying the ribbon to the feeding device; a feeding device for driving the feeding device; 10 a cutting device provided in the foregoing Between the sewing unit and the feeding device, the belt member sewn by the sewing unit to the fabric is cut into a predetermined length, and the control device has a tension detecting device for detecting the And the control unit is configured to perform the sewing operation of the sewing unit when the sewing operation of the sewing unit is in the first operation state of sewing the belt to the fabric, and the control unit becomes the first 1 control state, and when the sewing operation of the sewing unit is to cut the ribbon after the sewing of the cloth is finished, and prepare to take 20 belts When the object is sewn in the second state of the subsequent cloth, the control unit is in the second control state, so that the control unit can switch the control state in response to the sewing operation of the sewing unit, and control the feed drive device and the supply drive. And the first control state is such that the feeding device stops the feeding of the ribbon and the container reaches the allowable state by the passage of the ribbon, and the feed drive device is stopped. Controlling the supply drive device by the supply device to supply the ribbon to maintain the detected tension of the tension detecting device constant; and in the second control state, the fifth feeding device is configured to feed the ribbon The feed state of the sewing unit is previously controlled, and the aforementioned feed drive device is controlled to feed the ribbon by the aforementioned feed device. 41