TW200306371A - Control apparatus of sewing machine - Google Patents

Abstract

Disclosed is a control apparatus of a sewing machine, which maintains the tension of belt-shaped objects at a constant without increasing the size of the sewing machine while allowing easy maintenance. During sewing operation of a sewing unit (25), a single control unit (47) controls a drive unit (27) and a supply unit (28) t and synchronize a feeding unit (26) and the supply unit (28) in a inter-actively operating manner. As such, tension of belt-shaped objects (23) between the feeding unit (26) and the supply unit (28) may not be changed by the individual operations of the feeding unit (26) and the supply unit (28) and preventing variance in the tension of the belt-shaped objects (23) between the feeding unit (26) and the supply unit (28) so as to maintain constant tension of the belt-shaped objects (23) fed into the sewing machine (25).

Description

200306371 发明 Description of the invention (The description of the invention shall state: the technical field to which the invention belongs, the prior art, the content, the embodiments and the simple description of the drawings)

Γ The technical field to which the invention belongs; J Field of the invention The present invention relates to a control device for controlling a seam initial setting device for sewing a webbing to a garment.

LU · BACKGROUND OF THE INVENTION Fig. 10 shows a block diagram of a control device 1 in a conventional sewing device. The control device 1 is provided on a sewing device 2 for sewing a belt on a garment, and 10 is a control device for controlling the sewing device 2. The sewing device 2 includes a sewing machine body 3 for feeding a belt into a feed roller 5 in the sewing machine body 3, driving a feed motor 6 of the feed roller 5, and discharging the belt wound on a spool, The supply roller 7 that feeds the feed roller drives the supply motor 8 of the supply roller 7. The control device 15 for controlling the sewing device 2 is made of solid dia. The sewing machine body 3 includes a sewing machine rotation signal generating device 13. The sewing machine rotation generating device 13 measures the rotation of the drive shaft driving the sewing machine body 3, and generates a rotation signal indicating the rotation speed. The control circuit I} drives and controls the feed motor 6 in accordance with the rotational speed of the drive shaft indicated by the signal from the sewing machine rotation signal generating device 13. Thus, the feed motor 6 drives the roller 5 in accordance with the rotation speed of the drive shaft, and transmits the ribbon to the sewing machine body 3 in accordance with the sewing action of the sewing machine body 3. The sewing device 2 includes, for example, Patent No. 3,061,256 (refer to the tension detection penetrating unit U W). The tension detecting device 14 detects the tension on the belt between the feed roller 5 and the supply 20 200306371 玖, description of the invention. The control circuit 12 drives the supply motor 8 in accordance with the amount of tension indicated by the signal from the tension detection device 14. Thus, the supply motor 8 is used to drive the supply roller 7 'according to the tension on the belt, and the belt is fed to the feed roller 5 according to the tension. Specifically, the control circuit 12 starts to drive the supply motor 8 for a predetermined time from the moment when the tension on the ribbon exceeds the set tension, so that the supply roller 7 can be fed at a faster speed than the feed roller 5 The ribbon is fed at a high feed speed. After the belt between the feed roller 5 and the supply roller 7 is loosened, the control circuit 12 terminates the operation of the supply motor 8 and then enters a standby state until the next time the tension on the belt exceeds the set tension. 15 Sewing device 2 is designed to suppress the change in tension on the belt being fed into the sewing machine body 3. In addition to the feed roller 5 for conveying to the sewing machine body, a supply roller 7 for ejection is provided. Control circuit " 12 to enter them: independent control 'when the tension on the belt between the rollers 5, 7 exceeds the tension, the threshold value% will loosen the belt between the rollers 5, 7 which were originally discharged at high speed Ground 'terminates the feed until the tension exceeds the set tension again. 20. In the traditional technology, the rollers 5 and 7 are controlled independently, and the length of the belt between the wheels 5 and 7 changes, so between the rollers 5 and 7: the tension on the object changes . The tension on the belts between the rollers 5 and 7 again affects the tension on the belts carried into the sewing machine body 3, changes the tension on the τ, and may affect the sewing performance. In addition, since the belt and the supply rollers 1 and '' 6 discharge the belt at high speed, static electricity is generated between the belt rollers 7. If the static electricity is not treated, the belt 200306371 玖, the invention description will be wound on the roller 7, so it is necessary to install a device to prevent the occurrence of electrostatic entanglement, such as a container filled with water, but this will make the sewing device larger. Maintenance can also become cumbersome. [泼 ^ 明明 ^] 5 Summary of the Invention The present invention is to provide a control device for a slitting device, which can keep the tension on the belt carried in the sewing device substantially constant, and can prevent sewing. The device is large in size and easy to maintain. The control device of the sewing device of the present invention, the sewing device includes: a sewing unit 10; a feeding device for feeding a ribbon into the sewing cutting unit; a feeding driving device for driving the σ garment setting; A feeding device for feeding a webbing in the feeding device; and a feeding driving device for driving the feeding device, comprising a control unit for controlling the feeding driving device and the feeding driving device in synchronization with the sewing operation of the sewing unit. 15 ㈣ The present invention, synchronized with the sewing of the assist device, pass! Each control device controls the conveyance drive device and the feed drive device, so that the stitching action of the conveyer device and the feed device can be synchronized, and the associated control can be performed on them. In this way, it is possible not only to prevent the tension on the belt between the conveying device and the feeding device from changing by 20 due to the separate operation of the conveying device and the feeding device, but also to prevent the belt from being changed between the feeding device and the feeding device. The tension of the belt changes, so that the tension on the belt fed into the sewing device is changed, and the tension is kept constant. Moreover, it is not necessary to supply the ribbon at a high speed through the supply device, so that static electricity can be prevented from being generated due to the high-speed supply, and the ribbon is prevented from being entangled on the supply device described in the invention. Therefore,…, and other words, devices that prevent entanglement, such as water injection devices, can be used to increase the size of the L μ device, and also facilitate maintenance. $ ㈣Single control feed device and supply drive device to control the feed and clothing feed speed of the book and the feeding device to the belt, the feed speed is the same or slightly exceeds the feed speed, and according to the feed ί ί, The tension of the belt between the devices controls the supply driving device. ι〇 According to the present invention, the feed driving device and the supply driving device are controlled so that the feeding speed of the belt of the 10 feeding device is the same as or slightly exceeding the feeding speed of the belt of the feeding device, so that the The feeding and supply of the ribbon by different devices can also ensure that the length of the belt t between the feeding device and the feeding device is kept constant and fixed. In this way, it is basically possible to ensure that the tension on the belt between the feeding 1 and the feeding device is constant, and it can prevent the tension on the belt in the feeding, feeding, and knife clothing from being affected, and can make the feeding seam rush. The amount of tension on the ribbon in the device is constant. In addition, the supply driving device is controlled according to the tension on the belt between the feeding device and the feeding device, so regardless of any external factors affecting the tension on the belt between the feed roller and the supply roller, Both can control the supply driving device to change the feeding speed of the feeding device, so that the tension of the belt between the feeding device and the feeding device can be corrected. In this way, it is possible to ensure that the tension on the belt between the feeding device and the feeding device is constant. The present invention has a tension detecting device for detecting a strip between the feeding device and the feeding device. 200306371 玖, the tension described in the invention; when the tension detected by the tension detection device is above a predetermined set tension, the control device controls the supply drive Device to increase the supply speed of the ribbon by the supply device. 5 minus the present invention, when the detection tension between the feeding device and the feeding device exceeds a predetermined set tension, the feeding speed of the ribbon of the feeding device will increase, and the feeding amount will increase accordingly. Thus, at least the tension on the web between the feeding device and the feeding device can be prevented. In this way, the tension on the belt between the feeding device and the feeding device can be corrected to keep it basically constant. The feeding device of the present invention can freely switch between the feeding state of feeding the ribbon into the juvenile unit and stopping the feeding of the ribbon into the sewing unit and allowing the ribbon to pass; The circuit is available at the first! Switch between the control state and the second control state 15Control state, the first! The control state means that when the sewing operation of the sewing unit is in a preset first operating state, the feeding device is allowed to pass, and the operation of the feeding driving device is stopped, and the supply driving device is controlled to supply the ribbon from the feeding device. ; The second control state means that when the sewing operation of the sewing unit is in a second operating state different from the first operating state, the feed drive 20 device is controlled to make the feed dress into a feeding state through the feeding device. Feed the ribbon. According to the present invention, according to the initial sewing device, the sewing hastily moves the feeding device in a state where the ribbon is fed into the sewing device and stops feeding the ribbon into the sewing device and allows the ribbon to pass. By allowing each other to switch between states. 200306371 发明 、 Explanation of the invention When the cutting operation is in the preset first working state, the control device is brought into the first control state, the feeding device is switched to the passing state and the operation of the feeding driving device is stopped, and the feeding device is used to Supply the ribbon. When the sewing work is in the second working state, the control device is brought into the second control and fifth control state, the feeding device is switched to the feeding state, and the feeding device is driven by the feeding driving device to feed the ribbon. The feed drive of the drive feed device and the feed of the drive supply device are controlled by a single control device, so that the operation state of the feed device can be switched in accordance with the sewing work of the sewing device. In this way, 10 can drive the feeding device as needed, and the control is more convenient. A cutting device for cutting the belt is provided between the sewing unit and the feeding device on the sewing device, the cutting device, and the sewing unit cooperates with the cutting device to cut the belt according to a predetermined length. Sewing to clothing, 15. The first working state of the sewing unit is the sewing state where the belt is sewn to the clothing; the second working state of the sewing unit is to cut the T-shaped object after sewing to the clothing and Ready to sew the ribbon to the subsequent fabric. According to the present invention, when the sewing work is in the sewing state where the belt is sewn to the clothing 20, the feeding device is switched to the permitted state while the operation of driving the clothes is stopped, and the feeding device is used to supply the belt. Thing. When the sewing on the fabric is finished, cut off the ribbon and prepare to sew the ribbon on the fabric in the ready state. 'Switch the feed device to the feed state and drive the feed by the feed drive device. Device to feed the ribbon. 10 200306371 发明 、 Explanation of the invention As a result, the feeding device only needs to feed the ribbon in the prepared state. With this feeding device, it is not necessary to transmit tension to the ribbon being fed into the sewing device. Therefore, the feed driving device does not need to apply a large output torque to the belt by the feed device, and can be miniaturized. Fig. 5 is a brief description. Fig. 1 is a block diagram of a control device 2 of the sewing device 20 according to the embodiment of the present invention. Fig. 2 is a perspective view of the sewing device 20. FIG. 3 is a perspective view of a product sewn by the sewing device 20. 10 FIG. 4 is a flowchart of the control principle of the control circuit 〇 of the sewing device 20. Fig. 5 is a timing chart of the operation principle of the sewing device 20. Fig. 6 is a block diagram of a control device 21A of a sewing device 20a according to another embodiment of the present invention. Fig. 7 is a flowchart of the control principle of the control circuit 47 of the sewing device 20A. Fig. 8 is a timing chart of the operation principle of the sewing device 20A. Fig. 9 is a perspective view of a part 20B in another embodiment of the present invention. Fig. 10 is a block diagram of a control device of a conventional sewing machine. [Embodiment] Detailed description of the preferred embodiment Fig. 1 is a block diagram of the _ device 21 of the sewing device 2 () in the embodiment of the present invention. Fig. 2 is a perspective view of a sewing device 20; Fig. 3 is a perspective view of a product made of the sewing device 20. The control device 21 is a device for controlling the sewing device 20, which is mounted on a sewing device 20 for sewing a τ-shaped article to a garment using 11 200306371 玖. The initial sewing device 20 is a device equipped with a sewing machine body 25 called an overlock sewing machine. As shown in Figs. 3 (1) and 3 (2), the device can make trousers as shown in Fig. 5 (5). A belt 23, which is a rubber band with elasticity at the waist, is sewn to the shorts. The sigma sewing device 20 includes a main body portion 40, a supply portion 4 丨, and a control device 21. The main body portion 40 includes a sewing machine body, a feed roller 26 and a feed motor 27 near the sewing machine body. The supply section 41 is an automatic belt conveyer, and is supported by the pillar 42 above the main body structure 40. The supply section 41 includes a supply roller 28, a supply motor 29, and a reel support body 43. The sewing machine body 25 is used as a sewing device, so that the needle plate 31 and the pressing plate 32 sandwich the cloth 22 placed on the horizontal support surface of the cloth support table 30 (see FIGS. 3 (1) _3 (3), FIGS. 1 and 2) (The middle is omitted), and the cloth 22 is sewed by pushing a cloth rack (not shown in the drawing) in the direction of a preset spoon, while making the needle (not shown) reciprocating up and down along the driving direction of the needle. Further, in the sewing device 20, the belt-like object 23 is fed into the sewing machine body 25 and is sewn to the fabric 22. The feed roller 26 is used to feed the ribbon into the sewing machine body 25, and the ribbon feed openings 32 on the pressure plate 32 are provided at eight positions, and two rollers 35 and 203 are provided. The outer diameter of the roller piece 35 is larger than that of the roller piece 36, and the two are free to rotate about mutually parallel axes, and the two are elastically contacted and run in conjunction with each other. The rollers 35 and 36 are rotated without holding the ribbon 23, and the ribbon 23 is fed in. The feed motor 27 is a feed driving device for driving the feed roller 26, such as a stepping motor or the like. The feed motor 27 pairs one of the rollers 35 and 36. 2003 2003371 The invention describes that the lamp is driven by driving. Specifically, in this embodiment, the roller 35 is driven. In this way, the roller 36 is driven to rotate accordingly. The supply roller 28 is a supply device for supplying the ribbon 23 to the feed roller 26, and includes a pair of rollers 38 and 39. The ribbon 23 is supported on a bobbin 44 which is freely rotatable and supported by a two-line five-axis support building 43. The supply roller 28 takes out the ribbon 23 from the bobbin 44, and the outer diameters of the supply rollers 38, 39 are basically the same, and both of them rotate freely around mutually parallel rotation shafts, and the two elastically contact and operate in conjunction. The two rollers are rotated by sandwiching the ribbon 23 between them and 39, so that the ribbon can be pulled out. 10 The supply motor 29 is a device for driving the supply roller 28, and is, for example, a stepping motor. This supply motor 29 drives any one of the rollers 38 and M, and specifically, in this embodiment, the roller 38 is driven. In this way, the roller 39 is driven to rotate accordingly. The control device 21 is provided with a control circuit 47. This control circuit quilts the quilting machine 25 to synchronize the feed motor 27 and the feeding horse for fattening. In the present embodiment, the feed motor η and the supply motor M are controlled under feed so that the feeding speed of the ribbon 产生 produced by the feed roller 26 is kept consistent with that of the ribbon 23 produced by the supply roller 28. Make it the same or slightly beyond the point. It is best to keep the same and synchronize with the sewing action. 20 In the feed speed and feed speed, at least the feed speed and the transmission teeth in the sewing machine body M are generated. The conveying speed of the cloth 22 and the belt-shaped cymbal remain the same, so that the feed speed is lower than the feed speed of the conveying teeth in the sewing machine body 25 to the cloth 22 and the belt 23. In addition, the control circuit is required to synchronize with the sewing operation, and also needs to adjust the feed motor 27 and the supply motor according to the tension of the belt between the feed roller 26 and the supply roller ^ 2003 2003371 发明, the description of the invention. The motor 29 is controlled. Specifically, in this embodiment, if the tension detected by the tension detecting device 51 exceeds a preset tension value, the supply motor 29 is controlled to increase the supply speed of the ribbon 23 generated by the supply roller 28. 5 The control circuit 4 7 includes a central computing processing unit (c P U), a read-only memory (Rom), a random memory (RAM), a feed motor drive circuit, and a supply motor drive circuit. The control circuit 47 may be provided in the main body portion or the supply portion 41 without any problem. In addition, the control circuit 47 may be designed in other ways. In the present embodiment, it is provided in the body portion 4. Below. · 10 The sewing machine body 25 includes a sewing machine rotation signal generating device 50. The sewing machine body 25 transmits a driving force from a body driving device such as a motor to a driving shaft, and transmits the driving force to a needle, a transmission rack, and a head machine through the driving shaft (children 181). To drive them. The sewing machine rotation signal generating device 50 detects the rotation speed when the drive shaft rotates the body 25, and sends a rotation signal Sr indicating ㈣-15 to the control circuit 47. The sewing device 20 is provided on the supply portion 41 and has a tension detecting device 51 for detecting tension. The tension detecting device 51 detects the tension of the web 23 between the feed roller% and the supply roller 28. The tension detecting device 51 includes a switch 5 2 and an operation piece 53 for changing the open / close state of the switch 5 2. The stupid piece 53 is freely displaceable, that is, the angular displacement can be supported freely and variably, and a strip 23 between the feed roller 26 and the supply roller 28 is wound on it. The operating piece 53 is displaced in accordance with the tension on the ribbon 23 between the feed roller% and the supply roller 28. When the feed roller% and the supply roller 14 200306371 ί 15 20 玖, invention description 28 If the tension on the object 23 exceeds the preset tension or does not reach the preset tension, (the operation piece) will operate the opening _ to switch the opening and closing state. According to the above structure, the tension detecting device 51 detects the tension between the feed roller and the brain supply roller 28, and transmits the tension signal Ss indicating the detection force to the control circuit 47. The control circuit 47 is generated in accordance with the rotation signal of the sewing machine. The rotation speed of the drive shaft indicated by the rotation signal issued by the device 50 and the detected tension indicated by the tension signal S # issued by the tension detection device 5 are sent to the feed motor in a pulse manner to control the feed roller 26 feed drive The signal% 27 sends a supply driving signal% 29 for controlling the supply roller 28 to the supply motor 29 in a pulsed manner. Thus, the control circuit 47 controls the feed motor 27 and the supply motor 29 while maintaining synchronization with the sewing operation. The sewing device 20 includes a cutter 55 for cutting the webbing 23, and the sewing machine body 25 and the cutter 55 cooperate with each other to cut the webbing 23 to the fabric while cutting the webbing 23 to a predetermined length. on. The cutter 55 is provided between the feed roller 26 on the supply path of the π-shaped object 23 and the belt supply port 32A of the pressure plate 32. The sewing device 20 has an operation input device (not shown). According to the operation of the operator, the operation input 1 can be inputted with an instruction to cause the cutter 55 to perform a cutting operation, and a signal indicating the input of the cutting operation is transmitted to the control circuit 47. Upon receiving this signal, the control circuit 47 transmits a cutting signal Sc to cut the ribbon ^ to the cutter 55. The cutter 55 cuts the ribbon 2 3 in accordance with the cutting instruction. FIG. 4 is a flow chart of the control principle of the control circuit 47 of the sewing device 20

15 200306371 发明 、 Explanation diagram of the invention The control circuit 47 enters step 0 when the sewing device 20 starts to sew, and starts to perform control. In step a1, the sewing machine is judged based on the rotation signal center of the sewing machine's rotation signal. Whether the drive shaft of the body μ is rotating. 5 In step a1, if it is determined that the drive shaft is in a rotating state, it proceeds to step a2, and the control circuit 47 controls the feed motor 27 so that the feed roller 26 rotates in accordance with the rotation speed of the drive shaft. That is, the control circuit ο controls the feed motor 27 so that the feed speed of the feed roller 26 to the belt ^ is consistent with the conveying speed of the belt 23 in the sewing machine body 25, and then proceeds to step 10a3. Control action. At step heart, 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. If it is determined in step a3 that the detected tension exceeds the set tension, the control circuit 47 executes the control operation in step a4. In the step, the control circuit 4715 controls the supply motor 28 so that the supply roller 28 supplies the belt 23 at a speed higher than a predetermined speed of the belt 23 in the sewing machine body 25 by a predetermined speed. The speed is such that the tension between the feed roller 26 and the supply roller 28 is reduced, and the control operation returns to step a1. In step a1, if it is determined that the drive shaft has not been rotated, the control circuit 0 executes the control operation of step a5. In step a5, the control circuit 47 controls the feed motor 27 to stop the feed roller 26, and controls the supply motor 29 to stop the supply roller 28, and then returns to the control operation of step ". In step a3, if it is determined that the detected tension does not reach the preset value 16 200306371 玖, the value of the invention description, the control circuit 47 performs the control operation of step a6. In step ", the control circuit 47 controls the supply motor 29 so that the The supply motor 28 rotates in accordance with the rotation speed of the drive shaft. Specifically, the control circuit 47 controls the supply motor 29 so that the supply speed of the ribbon by the supply motor is 5 degrees consistent with the feeding speed of the ribbon 23 in the sewing machine body 25, and then returns to step a1. Control action. In addition, the control circuit 47, while performing the control as described above, instructs the cutter 55 to cut the ribbon 23 upon receiving a cutting operation instruction from the operation input device. 10 FIG. 5 is a flowchart of the operation principle of the sewing device 20. At time t0, while the sewing machine body 25 is stopped, the tension detected by the tension detecting device "does not reach the set tension. This state will continue until time u, between time ti and time t5, and drive the sewing machine body 25 to operate. ^ Stop the sewing machine body 25. Between time 11 and 15, the tension detected from time 0 to [3 check 15] exceeds the predetermined tension. Between time 10 and 11, the control circuit 4 7 receives the rotation by the sewing machine. At the same time, the control circuit 47 receives a tension signal Ss indicating that the detected tension does not reach the set tension. The drive shaft of the sewing machine body stops operating at the same time. When the tension detection device 51 detects that the tension does not reach the predetermined value, the control circuit 47 sends a feed drive signal Sd27 to stop the feed roller 26 and set the rotation speed to 0. Stop the supply roller 28 and send the transmission driving signal% 29 with the rotation speed set to 0 to the feed motor 29 〇17 200306371 发明, description of the invention from time 11 to time 12 At the same time, the control circuit 4 7 receives a rotation signal indicating the rotation speed of the drive shaft N25 from the sewing machine rotation signal 50, and at the same time, the circuit 47 receives a tension signal Ss indicating that the inspection force has not reached _ constant tension. Between 5 and 12, the drive shaft that drives the sewing machine body 25 runs. When the tension detection device 51 detects that the tension does not reach the set tension, the control circuit 47 sends a transmission driving signal 表示 that indicates the rotation speed of the feed roller 26. Feed motor 27 so that the feed speed of the feed motor 26 is consistent with the conveyance speed in the sewing machine body 25. The feed motor is then activated so that the 10 output shaft can be displayed with the drive signal M27 The rotation speed corresponding to the rotation speed N27 is rotated, and the feed roller% is driven to rotate at the rotation speed indicated by the transmission drive signal. Between time t1 and t2, the control circuit 47 will supply the drive signal Sa29 indicating the rotation speed of the supply roller 28. It is sent to the supply motor 29 so that the supply speed generated by the supply 15 and the supply / decay wheel 28 and the transfer speed in the sewing machine body 25 are kept the same. Thus, the supply horse is started. Up to 29 so that the output shaft can rotate at a rotation speed N29 丨 corresponding to the rotation speed indicated by the supply drive signal Sd29 and drive the supply motor 28 at a rotation speed indicated by the supply drive signal Sd29. 20 between t2 and t3, The control circuit 47 receives a rotation signal center indicating that the rotation speed of the drive shaft is N25 from the sewing machine signal generating device 50, and the control circuit 47 receives a signal indicating that the detected tension exceeds the set tension. Between t2 and t3, sewing, The drive shaft of the trowel body 2 5 rotates. If the tension detecting device 51 detects that the tension exceeds the set value, the control circuit 18 200306371 玖, description of the invention < Road 47 will indicate the transmission drive of the feed roller 26 speed The signal ㈣ is sent to the feed motor 27 so that the feed speed of the feed roller 26 and the conveyance speed in the sewing machine body 25 match. As a result, the feed motor 27 is started so that the output shaft rotates at a rotation speed corresponding to the rotation speed indicated by the transport drive ^ symbol Sd27, and the feed roller 26 is driven to rotate at the rotation speed just displayed by the transmission drive signal. From time to time t3, in order to reduce the tension of the ribbon 23 between the feed roller% and the supply roller 28, the control circuit 4 sends a supply drive signal ㈣ to the supply motor 29. The supply drive signal 29 indicates a predetermined increase The rotation speed is added to the new rotation speed formed by adding the rotation speed of the supply roller 28 and the rotation speed of the supply roller 28 to the transmission speed in the sewing machine body 25. As a result, the rotation speed N292 corresponding to the rotation speed indicated by the supply drive signal Sd29 drives the feed motor 29 to rotate the output shaft at the rotation speed N292. Here, the "speed N292" will increase by 15 corresponding to the increase of the rotation speed of the supply roller 28. The rotation speed ΔN29 is added to the rapid speed formed at the rotation speed N291 between time t1 and time t2, and the supply roller 28 is driven to rotate at the rotation speed indicated by the supply drive signal 8o. The time t4 is the time at which the predetermined time TA elapses after the dragon check force enters a state where the set tension does not reach the set tension at time 彡 03. From time 20 to time t4, the control circuit 47 receives a rotation signal indicating that the rotation speed of the drive shaft is N25 from the sewing machine rotation signal generation 50, and the control circuit 47 receives a tension signal Ss that detects that the tension does not reach the set tension. The time between k3 and t4 is t3 to t4, the drive shaft of the sewing machine body 25 is driven, the tension k measures I set 51 changes from exceeding the set tension to less than the set tension, and then passes through the setting 19 200306371 The control circuit 47 sends a transmission drive signal Sd27 indicating the rotation speed of the feed roller 26 to the feed motor 27 so as to keep the feed speed of the feed roller 26 consistent with the feed speed in the sewing machine body 25. The feed motor 27 is driven so that the output shaft 27 can rotate at a rotation speed corresponding to the transmission drive signal Sd27 5 display, that is, the rotation speed N27, and drive the feed roller 26 at the rotation speed displayed by the transmission drive signal Sd27. From time β to t4, the control circuit 47 sends a supply drive signal Sd29 to the supply motor 29 in order to prevent the control state from undergoing a complex change as a result of the detection by the tension detection device 51. The supply drive signal 29 indicates that the predetermined speed is increased by 10 A new rotation speed formed by the rotation speed of the supply roller 28 which is adjusted to match the supply speed of the supply roller 28 with the conveyance speed in the sewing machine body 25. In this way, the supply motor 29 is started so that the output shaft rotates at a rotation speed corresponding to the rotation speed 1 ^ 292 indicated by the supply drive signal Sd29, and the supply roller 28 rotates at the rotation speed indicated by the supply drive signal 8 (129. Thus 15 will Make the system lag. The state of I from time t4 to time t5 is the same as that between time u and time 0. The control method is also the same. The state after time t5 is the same as the state between time t0 and time u, and the control method is also the same. Same. In the example of tf shown in Fig. 5, in order to facilitate understanding, the drive shaft of the sewing machine body 25 is rotated at a certain speed. Of course, it can also be controlled in the same way when the time changes. The circuit 47 determines whether the tension exceeds the set tension after obtaining the rotation speed information of the drive shaft and the tension information between the feed roller% and the supply roller 28. If the tension exceeds the set tension, the control circuit 47 will control the feed motor 20 200306371 玖2. Description of the invention 27 and the supply motor 28 control the tension to reduce the tension so that the feed speed of the feed roller% is consistent with the conveying speed in the sewing machine body 25. And let the supply speed of the supply roller 28 reach a speed higher than the conveying speed in the sewing machine body 25 by a predetermined speed. 5 If the tension does not reach the set tension, the control circuit 47 will judge when the detected tension enters from a state exceeding the set tension. After the state below the set tension, whether time has elapsed again or not. The control device 2 丨 is provided with a timer, through which the timer can be used to record the time after the tension from the state exceeding the set tension to the state below the set tension. The timer has an infinite initial value at the beginning of the control, 10 is larger than the setting of the day guard TA, the timer is reset when the detection tension changes from a state exceeding the set tension to a state below the set tension. After determining that the time TA has elapsed, the control circuit 47 controls the feed motor 27 and the supply motor 28 so that the feed speed of the feed roller 26 is consistent with the conveyance speed in the sewing machine body 25, and the feed roller is adjusted. The supply speed of 15 28 is consistent with the conveying speed in the sewing machine body 25. If the time has not elapsed, the control circuit will control The feed motor 27 and the supply motor 28 are used to reduce the tension so that the feed speed of the feed roller 26 is consistent with the conveying speed in the sewing machine body 25, and the feed speed of the supply roller 28 reaches a speed higher than that of the sewing machine body. The conveying speed is a predetermined speed. The control circuit 47 repeats the above-mentioned series of actions. Due to the role of the control device 21 of the sewing device 20 in this embodiment, the control circuit 47 can control the feed motor 27 and the supply motor. 29 controls to synchronize ... the sewing action of the machine body 25 is synchronized, so that the feed roller 21 200306371 玖, invention description 26, and the supply roller 28 are synchronized with the sewing action, and are related to each other. In this way, it is possible to prevent a change in the tension of the web 23 between the feed roller 26 and the supply roller 28 due to the separate operation of the feed roller 26 and the supply roller 28, and prevent the feed roller from being changed. The tension of the belt-like object 23 between 26 and the supply roller 28 changes, so that the tension of the belt-like object fed into the sewing machine body 25 changes, so that the tension is maintained substantially constant. Here, it is not necessary to feed the ribbon 23 at a high speed by using a supply roller as in the conventional technique, so that it is possible to prevent the ribbon from being tangled around the feeding device due to static electricity generated by high-speed feeding. There is no need to install another device to prevent the occurrence of 10 entanglement, which effectively prevents the sewing device 20 from becoming larger in size, and also facilitates maintenance. In addition, the feed motor 27 and the supply motor 29 are controlled so that the feeding speed of the ribbon 23 of the pair of the feed roller 26 is consistent with or not higher than the feeding speed of the ribbon 23 by the feeding roller. %, And by detecting the tension of 15, the belt 23 can be conveyed and fed by different devices, and the length of the belt 23 between the conveying device and the feeding device can be kept constant or almost constant. By using the detection tension, it is possible to reliably ensure that the length of the ribbon 23 between the transfer device and the supply device is constant or substantially constant. -〇 When the feed, feed, and σ speeds are the same as the feed speed, the length of the belt 23 between the transfer blade and the feed device can be kept constant. This can ensure that the tension of the ribbon 23 between the feed roller 26 and the supply roller 28 is constant, and it will not affect the tension of the ribbon 23 entering the sewing machine body 25, which can ensure that the ribbon entering the sewing machine body 25 can be guaranteed. The tension on 23 is constant. Under these 22 200306371, invention description, the control process is based on the detection of tension, so when the tension of the feed roller 26 and the supply roller 28 of the object 23 increases due to some external reasons, you can Correct the tension of the ribbon 23 in time to ensure that the tension is constant. 10 Of course, it is best to keep the feeding speed consistent with the feeding speed, but even if it is not the same, make the feeding speed higher than the feeding speed by a little bit, and according to the detection The tension changes the supply speed. ㈣The supply motor can be adjusted according to the tension of the belt 23 between the feed roller 28 and the supply roller 28. Therefore, when the belt is tensioned between the feed roller 26 and the supply roller 28, When changing, 'the supply motor 29 can be controlled to change the supply speed of the supply roller 28', and the tension of the ribbon 23 between the supply roller 26 and the supply roller 28 can be corrected. Therefore, with a simple structure, the conveying device can be made The length of the ribbon 23 is kept substantially constant from the feeding device. This configuration is particularly effective when the feeding speed of the feeding roller 26 is slightly exceeded. The tension detection device M can not only be realized by a very simple structure that detects whether the tension exceeds a set tension, but also the tension on the ribbon 23 between the feed roller 26 and the feed roller 28 does not change greatly. Basically, the tension can be kept constant. Fig. 6 is a block diagram of a control device 20A of a sewing device 20a according to another embodiment of the present invention. The embodiment shown in Fig. 6 and Fig. 5 The embodiment shown in the figure is similar, and the corresponding parts use the same symbols, and the differences in structure will be explained, and the description of the same parts will be omitted. In the sewing device 20 of this embodiment, the feed roller 26 may be in the following two Freely switch between states, you can feed the ribbon 23 into the sewing machine body 23 200306371 玖, the transmission of the description of the invention 25 and stop the feeding of the ribbon into the sewing machine body 25 and allow the ribbon 23 The passing state is allowed. The rollers ^% can be freely switched between contacting or separating states. The rollers ^, ^ are in contact with each other. The closed device is in the feeding state, and the rollers 3 5 and 36 are separated from each other and open. The 5 state is the permission state. In the sewing device 20A, it is possible to set the sewing_rotation signal 5 () or not. In this embodiment, it is not used in the control of the motors 27 and 29. The sewing device 2GA The tension detecting device 51 continuously detects the tension on the ribbon 23 between the feed roller 26 and the supply roller 28, and sends a tension signal S s indicating the tension to the control circuit 47. The tension The detection device 5 i can be freely positioned, and a ribbon is wound thereon, and it can be composed of an operating member that is displaced according to the tension on the ribbon 23 and a position detection sensor for detecting the position of the operating member. In this embodiment, the supply motor 29 can drive the supply roller 28 in both forward and reverse directions. In 4, 4, and 20A, when the sewing work of the sewing machine body 25 is in the preset first operation state, and in the second operation state different from this operation state, the control circuit 47 is in the control state. The first control state and the second control state are switched accordingly. In the first air-conditioning state, the control circuit 47 sets the feed roller 26 in a passing state and stops the operation of the feed motor 20 revolutions. The sub-control supply motor 29 supplies the ribbon 23 from the supply roller 28. In the second control state, the control circuit 47 "sets the feed roller to the conveying state and controls the feed motor 27 to feed the feed roller 26 to the ribbon 23. The i-th operating state of the machine body 25 at the beginning of sewing is to the fabric 22 The state where the ribbon 23 is sewn up. The second operation state of the sewing machine body 25 refers to the clothing 24 200306371. After the sewing is completed, the ribbon 23 is cut by the cutter 55 and is ready to go back. The ready state of the belt is sewn on the fabric. Ίο 15 20 The sewing device 2GA of this embodiment t is provided with a switching instruction device 60. The switching instruction device is used to switch a signal indicating a switching control status instruction. $ Comment 丨 is sent to the control circuit 47. The switching instruction device 60 can send a command to switch the control state to the control circuit 0 according to the operation of the operator, and can also send a command to switch the control state to the control circuit according to a set program. f The switching instruction device 60 in this embodiment is manually operated by the operator, for example, there is an input device that can be operated by feet, and the switching instruction is sent to the control circuit according to the operation of the input device. This input setting can be used to rotate the following instructions to execute and stop the sewing operation of the sewing machine body 25, the cutting operation of the cutting device 55, the opening and closing of the feed roller 26, and the cutting of the ribbon. After breaking, the ribbon 23 is again transmitted to the ribbon inlet of the pressure plate, and the devices can be controlled by the control circuit 47 according to these instructions. ❿ In this embodiment, the control circuit 47 suppresses the shape of the sewing machine body. On the basis of the synchronization, the control state is switched to control. Figure 7 is a flow chart of the control circuit of the control device 20A. The control principle flowchart. The control circuit shaft device starts sewing at the same time, and enters / step 1? 0 Start the dagger. In the step ㈣, do not break the working condition of the body μ 25 200306371 玖, description of the invention in step μ, if the judgment result is the i-th action, the control circuit 〇 In order to perform control in the first control state, go to step b2 At the same time that the feed roller is started, the operation of the feed motor 27 is stopped in step b3, and the control operation of step μ is entered. In step b4, the control circuit 47 is based on the tension issued by the tension detection device 5 51. The signal controls the supply motor 29 with the indicated detection tension. Specifically, the control circuit “controls the supply motor μ to rotate the supply roller 28 so that the feed roller 26 and the supply roller are in a π-like shape. The tension on 23 is maintained to reach the tension suitable for sewing on the clothing 22, that is, the preset tension. 10 "After completing the work of step M ', the process proceeds to step b5, and the control circuit 47 determines whether the switching operation of the k-shape has been performed. That is, it is determined whether an instruction is inputted to cause the sewing machine body 25 to stop sewing, so Whether the operation status of the sewing machine body 25 has been changed. If the control circuit 47 determines that the switching operation has been performed, it returns to the control operation of step b1, and if it is determined that the switching operation is not performed, it returns to the control operation of step b4. Step b 1 The middle and right are determined to be the second operation. In order to perform control in the second control state, the control circuit 47 proceeds to step b6 to close the feed roller%, and proceeds to step b7 to control the cutting device 55 to cut the ribbon 23. Cutting Action Surname 2 ㈣ 彳 Circuit 47 moves in a complicated way, controls the feed roller 27 so that 20㈣ rotates the Ling wheel 26, and then executes the control action of step b9. The control action in step b4 in step 相同 is the same. The control circuit 47 controls the supply motor 29 according to the detected tension.... After performing the action in the step lion, the control circuit 47 enters step b10 to determine the retransmission of the ribbon 23 after the n-th cut. which is Whether the front end of the extended part from the supply wheel 28 of the ribbon 23 to the rewinding bobbin has reached the pressure plate 32 after entering 26 'State U6371', description of the invention ^ after the knife breaks. The control circuit 47 will According to the operation of the input device, according to the result of whether the retransmission has been terminated, the control f way 47, if it detects that the retransmission has been terminated, executes the ㈣ action in step bn, and if the inspection is terminated again, it repeats the steps. The control action of b8. In step Mi, the control circuit 47 controls the feed motor 27 and the supply motor and the feed control so as to stop the operation of the feed roller 26 and the supply roller U, ..., and then execute step M2. Control action. In step bi2, the control circuit 0 determines whether the control state switching operation has been performed as in 4b5. If the control circuit 47 detects the switching operation, it returns to the control movement in step bi to determine whether it has been detected. After performing the switching operation, it returns to the control action in step b 12. Fig. 8 is a time-series 15 diagram of the _ device 2 () principle of one of the cases. At time t0A, the sewing machine body 25 is in the second position. jobs State, the control circuit 47 is in the second control state, while the body of the sewing machine stops rotating, the tension is set to 5 and it is detected that the tension does not reach the set tension. This state continues until the dead t1, at time t1, the sewing machine The working state of the body 25 is changed to the ^ th working state and the control state of the control circuit 47 is changed to the j-th controlling state 20. The driving of the sewing machine body 25 is started from time UA until time t2A, and the operation of the sewing machine body 25 is terminated at time t2A. Between the time ua and the time t2A, the tension detecting device 51 detects that the tension exceeds the set tension. Then, the supply motor 29 is controlled based on the detected tension so that the supply speed can be restored to a value that allows the tension to return to the set tension. Speed value, and can rotate the supply 27 200306371 玖, invention description roller 28. At this time, the rotation speed N291A of the output shaft of the supply motor 29 is a speed corresponding to the feed speed in the sewing machine body. At time t2A, the operation state of the sewing machine body 25 is switched to the second operation state, and at the same time, the control state of the control circuit 47 is switched to the second control state. In addition, at day t2A, the cut-off time is 55 to start the operation, and at time t3A, the cut-off device 55 is stopped. In the second working condition, the ribbon 23 is again passed into the sewing machine body 25, and preparations are made for the next sewing work. Between time t3A and t6A in the second operation state and the second control state, the feed motor 27 drives the output shaft to rotate at 10-speed N27A to rotate the feed motor 26 at a predetermined speed. At this time, the 'tension detecting device 51 detects that the tension value exceeds the set tension. Then, based on the detected tension value, the supply motor 29 is controlled so that the supply speed is returned to the supply speed which can restore the tension to the set tension, and the supply roller 28 is rotated. The specific situation is, for example, from the time t3A to 15 t4A and from time t5A to time t6A, the detected tension is greater than the tension detected between time t1A and time t2, in order to restore the tension ' The supply motor 29 drives its output shaft to rotate at a rotation speed of N292A, and drives the supply roller 28 to rotate. In addition, from time t4A to t5A, since the tension is increased, the supply motor 29 drives its output shaft to rotate at a speed of 20 N293A, and drives the supply roller 28 to rotate. After the time t6A, the second operation state and the second control state are maintained. Between t0 and 11, when the drive shaft stops rotating, the control circuit 47 receives a tension signal Ss indicating that the tension exceeds the set tension. Between the time ⑴ and tl, it is in the second control state, and the drive shaft of the sewing machine body 25 stops rotating. 28 200306371 In the case that the tension detection device 51 is set to a tension, the control circuit 吣 will stop the supply roller 28 The transmission drive signal Sd29 whose rotation speed is set to 0 is transmitted to the feed motor 29 by the operation. From time t1 to t2A, as indicated by the solid line in FIG. 8, when the donkey moves the five-axis rotation at the speed of N25A, the control circuit 47 receives a tension signal Ss indicating that the tension value exceeds the set tension. The time is between t1A and t2A, the drive shaft of the machine body 25 at the beginning of sewing is rotated at the speed N25, and when the tension detecting device 5 丨 detects that the tension exceeds the set tension, the control circuit 47 will A supply drive signal Sd29 indicating a rotation speed of 10 is sent to the supply motor 29 so that the supply roller 28 reaches a rotation speed capable of returning the tension to a set tension. In this way, the supply motor 29 is started to rotate the output shaft at a rotation speed N291A, that is, a rotation speed corresponding to the rotation speed indicated by the supply driving signal Sd, and the supply roller 28 is driven to rotate at the rotation speed indicated by the supply driving signal ⑽. 15 In this embodiment, when the sewing machine body 25 performs sewing, the feed roller 26 and the feed motor 27 stop rotating. The supply motor 29 is not controlled according to the rotation speed of the drive shaft of the sewing machine body 25, but according to the detected speed. As shown by the dotted line in FIG. 8, the tension control supply motor assumes that, even if the rotation speed of the drive sleeve changes, the supply motor 20 29 will not be directly controlled in accordance with the change. Of course, if the rotation speed of the supply drive shaft changes, if the detected tension changes according to the imaginary line in Fig. 8, it corresponds to the same, and the supply motor 29 is controlled in accordance with the imaginary line to change the supply. The speed of the motor output shaft. Between time t2 and time t3, the sewing machine body 25 stops sewing on the clothing 22 29 200306371 玖 After the invention describes the ribbon 23, the control circuit 47 controls the feed motor 27 and the supply roller 29 so that The feed roller 26 and the supply roller 28 stop rotating, and the cutter 55 is operated. In the second control state between time t3 and time t4, at the same time, the belt 23 5 is fed into the sewing machine body 2 5. When the detected tension exceeds the set tension, the control circuit 47 indicates the rotation speed of the feed roller 26 The feed drive k number Sd27 is sent to the feed motor 27 so that the feed speed of the feed roller 26 reaches a predetermined feed speed. Thus, the feed motor 27 is started so that the output shaft rotates at a rotation speed N27, that is, a rotation speed corresponding to the rotation speed displayed by the transmission drive signal% 27, and drives the feed roller 26 at the rotation speed indicated by the transmission drive signal Sd27. . Between time t3A and HA, the control circuit 47 sends a supply driving signal Sd29 indicating the rotation speed of the supply roller 28 to the supply motor 29 so as to maintain the supply speed of the supply roller 28 and the feed speed of the feed roller 26 to 15 To. Accordingly, the supply motor 29 is started so that the output shaft rotates at a rotation speed N291A corresponding to the rotation speed indicated by the transmission drive money Sd29, and drives the supply roller 28 at the rotation speed indicated by the transmission drive signal Sd29. Between the time t4 and t5, it is in the second control state. When the band-shaped reed is fed into the sewing machine body 25, and the detected tension is greater, the control circuit 47 sends the watch to the phase-change material of the roller 26, _Qianru 7 is sent to the feed motor 27 so that the feed speed of the feed roller 26 reaches a predetermined feed speed. Thus, the 'feed motor 27 is operated so that the output shaft rotates at a rotation speed N27a, that is, a rotation speed corresponding to the rotation speed indicated by the transmission drive signal ___. 2003 2003371 玖, the description of the invention, and the feed drive signal Sd27 The rotation speed drives the feed roller 26 to rotate. In addition, between time t4A and t5A, in order to reduce the tension on the ribbon 23 between the feed roller 26 and the supply roller 28, the control circuit 47 can adjust the supply speed of the 5 supply roller 28 and the feed roller 26. When the rotation speed of the supply roller 28 having the same feed rate is increased by a predetermined increase in rotation speed, a new rotation speed is formed, and a supply drive signal sd29 indicating the new rotation speed is transmitted to the supply motor 29. As a result, the supply motor 29 operates, and the output shaft is driven at a rotation speed 1 ^ 293, which corresponds to the rotation speed indicated by i and the driving k ^ Sd29, that is, at an increased rotation speed ΔΝ29Α corresponding to the increased rotation speed of the supply roller 28. The rotation speed N292 formed after the rotation speed N291 at the time from t1 to t2 is rotated, and the supply motor M is driven at the rotation speed indicated by the supply drive signal% 29. The state between sun guardian t5 and t6A is the same as that between time t3A and t4A, and the same control is performed as between time guard and time_coffee. In addition, the state after time 15 to t6 is the same as the state between time points, and the same control is performed as from time t0A to t1A. It is judged by the control circuit 47 that it is in the first air control state or the second control state. If it is in the first control state, it is judged whether the tension exceeds the set tension, and at the same time, it is judged whether the sewing machine body 25 sews the ribbon 23 to the clothing 2 20 or not. When the first control state is detected, the control circuit 47 terminates the operation of the feed motor 27 and the breaker 55. In addition, in the first control state, the control circuit 47 aligns and controls the supply motor based on the detected tension so that the supply speed of the supply roller 28 reaches a suitable value so that the detection can be detected. 31 200306371 The tension becomes the set tension, and the ribbon 23 is supplied. If it is in the second control state, the cutter 55 is operated in accordance with the input from the input device, and the ribbon 23 is fed again by the feed roller 26 and the supply roller 28. At this time, the control circuit 47 controls the supply motor 29 to supply the ribbon 23 based on the detected tension so that the supply speed of the supply roller 28 reaches a certain value so that the detected tension reaches the set tension. The control circuit 47 repeatedly executes this series of control actions. In this embodiment, the control device 21A of the sewing device 20A is the same as the control device 21A of the sewing device 20, and the feed motor 27 and the supply device are synchronized with the sewing action 10 of the sewing machine body. The motor 29 is controlled by a single control circuit 47, so that the feed roller% and the supply roller 28 can be synchronized with the sewing operation, and can be controlled in association. In this way, it is possible to prevent the tension on the ribbon 23 between the feed roller 26 and the supply roller 28 from being changed due to the movement of the feed roller 26 and the supply roller 28 respectively, and to prevent the feed roller 26 and the supply from being changed. By changing the tension on the belt 23 between the rollers M, the tension on the belt 23 fed into the sewing machine body 25 is changed, and the tension can be kept constant. In addition, it is no longer necessary to feed the ribbon 23 at high speed by the supply roller 28 as in the conventional technique, so that it is possible to prevent the ribbon from being entangled with the supply device due to high-speed feeding. Therefore, it is not necessary to provide a separate garment to prevent tangling hairs: ’Not only does Xiwen prevent the appearance of the sewing machine from becoming too large, but also facilitates machine maintenance. In the second control state, the feeding speed of the feeding roller% to the ribbon ^ is kept consistent with the feeding speed of the feeding roller 28 to the ribbon 23 or 32 200306371. The invention description, for example, exceeds only 0%. Within 2G%, and using the detection tension, # to the motor 27 and the supply motor 29 'can be used in different ways: the conveyance and feeding of the object 23, and can maintain between the conveying device and the supply The length of the ribbon 23 is 4 or substantially remains 4. By using: measuring the tension ’, it is possible to reliably ensure that the length of the ribbon ^ between the feeding device and the feeding device is constant or substantially constant. 10 15

In the case where the path and the feeding speed are different, the length of the ribbon 23 between the conveying device and the feeding device can be kept constant. In this way, the length of the ribbon 23 between the feeding device and the feeding device can be maintained-fixed, which can prevent: the tension on the ribbon 23 in the body 25 that is fed into the sewing machine is affected, and the feeding can be made The tension on the ribbon 23 in the machine body 25 is determined. In this case, the tension of the supply is performed regardless of the tension on the ribbon 23 between the feed roller% and the supply roller 28. When any external factor becomes large, the tension of the ribbon 23 can be corrected so that the tension can be kept constant.

. To keep the feed rate and the feed rate-Of course, it is the most ideal. Without sinking, it can also make the feed rate slightly higher than the feed rate, and the measured tension changes the feed rate. In this way, the tension of the belt 23 between the feeding roller M26 and the feeding roller 28 can be used to interfere with the supply motor 29. Therefore, when the feeding roller 26 and the feeding roller 28 are in a belt shape, When the tension of the object 23 ′ changes, it is possible to control the supply motor 29 to change the speed of the supply VII and the feed speed, and to correct the tension of the object 23 between the feed roller 26 and the supply roller 28. Therefore, with a simple structure, the length of the ribbon 23 between the feeding device and the feeding device can be kept substantially constant. 33 200306371 发明, description of the invention This structure is particularly effective in the case where the feed speed of the feed roller 26 is slightly exceeded by the feed speed control. The tension detection device 51 can be realized by a simple structural method as long as it detects whether the tension exceeds the set tension and does not cause the tension of the ribbon 23 5 between the feed roller 26 and the supply roller 28 to be excessively changed. Keep the tension constant. In addition, according to the sewing action of the sewing machine body 25, the feed roller% is switched between the following two states, that is, the feeding state in which the ribbon 23 is transferred to the sewing machine body 25, and the feeding of the ribbon 23 is stopped The human rib machine body 5 allows the belt 23 to pass. When the hacking machine body ^ is in the first working state, the control circuit is set to the first control state, so that the feed roller 26 is allowed to pass and the feed motor is stopped at the same time, and the belt is supplied through the supply roller 28. Object 23. When the sewing operation is in the second operation state, the control circuit 47 is set to the second control state, and the feed roller ㈣ is in the transmission state, and the feed roller is driven by the feed motor 27. The belt 15 23 is fed in. The feed motor 27 that drives the feed roller 26 and the feed motor 29 that drives the supply roller 28 are controlled by a control circuit 47, so that the machine body 25 can be sewed according to the sewing of the machine body 25. Hurry action, switch the working state of the feed roller ^. Thus, you can drive the feed roller ^ for 20 control accordingly, more convenient to use. * Sewing work is to sew the ribbon 23 to the fabric 22 The sewing state 匆 'stops the rotation of the feed motor 27 while the feed roller 26 is allowed to pass, and the ribbon 23 is supplied by the supply roller 28. After the sewing operation on the cloth 22 is stopped, it is cut off Ribbon 23 34 200306371 准备, invention description When the belt 23 is sewed in the ready state, the feed roller% is changed to the feed state, and the feed roller 26 is driven by the feed motor U to feed the belt 23 is fed in. Thus, the feeding roller 26 only needs to feed the ribbon 23 in the prepared state. With this feeding roller 26, it is not necessary to impart tension to the belt that is fed into the sewing machine body 25.物 23. Therefore, the 'feed motor 27 does not need to apply a large output torque such as a tension to the ribbon 23 via the feed roller 26, and can be miniaturized. FIG. 9 shows another example of the present invention. A perspective view of the W part of the second station of the device 2. The embodiment shown in FIG. 9 is basically the same as the embodiment shown in FIG. 8 'corresponding parts use the same symbols, and only the differences will be described here' and omitted Description of the same place. In the foregoing embodiment, the sewing machine body 25 of the sewing device 20, 20A is referred to as a (overlock sewing machine) sewing machine. In this embodiment, the baby sewing machine 25 is a belt Like decoration, that is, used to sew the ribbon 23 to the fabric 22 Flat stitch sewing machine (needle is omitted in the figure). The detailed description of each part is omitted here. This pinching device is fine and can achieve the same effect as the control of the above-mentioned embodiments. The above-mentioned embodiments in the present invention The structure can also be appropriately adjusted within the scope. 20 Effects of the Invention According to the present invention, the synchronization with the slitting of the sewing device, the transmission driving device and the feeding driving device are controlled by the control device, so that the transmission device and the Sewing action of the feed device, Le stepping at a glance, ya will close the feed device separately

联 控制。 Joint control. In this way, not only the tension on the belt between the conveying device and the feeding device can be prevented from changing due to the operation of the conveying device and the 35 200306371 玖, invention description, but also the belt between the feeding device and the feeding device can be prevented. The force on the belt is deodorized, so that the change in tension on the belt fed into the sewing device is maintained constant. Moreover, it is not necessary to supply the ribbon at a high speed by the supply device, so that it is possible to prevent static electricity from being generated by the high-speed supply and prevent the ribbon from being tangled on the supply device. Therefore, there is no need to provide a device for preventing entanglement, such as a container filled with water, and the like, so that the size of the sewing device can be prevented from increasing, and maintenance is also facilitated. 10 According to the present invention, the feeding driving device and the feeding driving device are controlled so that the feeding speed of the ribbon of the feeding device is the same as or slightly exceeding the feeding speed of the ribbon of the feeding device, and can be performed by different devices. The feeding and supply of the belt can also ensure that the length of the belt between the feeding device and the feeding device is constant or basically the same. It can basically ensure that the feeding on the belt between the clothes and the feeding device is 15 The tension on the belt j φ team milk can be prevented from affecting the tension on the belt fed into the sewing device, and the tension on the belt fed into the sewing cutting device can be constant. 20 According to the tension on the belt between the feeding device and the feeding device, the supply driving device is ′ ', so regardless of any external factors that change the tension on the belt between the feeding roller and the feeding roller, The supply driving device can be controlled to change the supply speed of 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 amount of tension on the belt between the feeding device and the feeding device can be reliably ensured. 36 200306371 发明. Description of the invention According to the present invention, when the detection tension between the feeding device and the supply device exceeds a predetermined set tension, the supply speed of the ribbon of the supply device increases, and the supply amount increases accordingly. In this way, at least the tension on the belt between the feeding device and the feeding device can be prevented. In this way, the tension on the belt between the feeding device and the feeding device can be corrected to keep it basically constant. According to the present invention, according to the sewing action of the sewing device, the feeding device is in a state in which the belt is fed into the sewing device and a passing permission state in which the feeding of the belt into the sewing device is stopped and the belt is allowed to pass therethrough Switch. 10 When the sewing operation is in the preset first operation state, the control device is brought into the first control state, the feed device is switched to the pass permission state, the operation of the feed driving device is stopped, and the belt is supplied by the supply device. When the sewing work is in the second working state, the control device is brought into the second control state, and the feeding state is switched to the feeding state. The $ @ feed drive device is used to drive the feeding device to feed the ribbon. Into. The feed drive of the drive feed device and the feed of the drive supply device are controlled by a single control device, so that the operation state of the feed device can be switched in accordance with the sewing work of the sewing device. In this way, month b is enough to drive the feeding device according to needs, and the control is more convenient. 20 According to the present invention, when the sewing work is in a sewing state where the belt is sewn to the fabric, the feeding device is switched to the passage-allowed state while the operation of the feed driving device is stopped, and the belt is supplied by the feeding device. Thing. After the sewing on the fabric is finished, cut the ribbon and prepare the sewing state for the ribbon. Switch the feeding device to the feeding state. Refer to 37 200306371 The driving device drives the feeding device to feed the ribbon. Therefore, it is only necessary to feed the belt into the device in the ready state. After passing through the feeding device, it is not necessary to transmit tension to the item being fed into the sewing device, and the feed driving device does not It is necessary to apply a large output torque to the four objects by the feed force, and the size can be reduced. [Brief Description of Drawings] Fig. 1 is a block diagram of the control device 21 of the sewing device 20 of the fx embodiment.

Fig. 2 is a perspective view of the sewing device 20. FIG. 3 is a perspective view of a product sewn by the sewing device 20. Fig. 4 is a flowchart of the control principle of the control circuit 0 of the sewing device 20. FIG. 5 is a timing chart of the operation principle of the sewing device 20. Fig. 6 is a block diagram of a control device 21A of a sewing device 20a according to another embodiment of the present invention. Fig. 7 Flow chart of the control principle of the control circuit 47 of the sewing device 20A

Illustration. Fig. 8 is a timing chart of the operation principle of the sewing device 20A. Fig. 9 is a perspective view of a part of a sewing device 20B according to another embodiment of the present invention. Fig. 10 is a block diagram of a control device 1 of a conventional sewing machine. 38 200306371 Description of the invention [Representative symbols for main components of the drawings] 1 ... Control device 2 ... Sewing device 3 ... Sewing machine body 5 ... Feed roller 6 ... Feed motor 7 ... For supply Roller 8 ... Supply motor 11 ... Control circuit 12 ... Control circuit 13 ... Sewing machine rotation signal generating device 14 ... Tension detection device 20 ... Sewing device 20A ... Sewing device 21 ... Control device 22 ... Fabric 23 ... Belt Object 25 ... Sewing unit 25 ... Sewing machine body 26 ... Feed device 27 ... Feed motor 27 ... Feed drive device 28 ... Supply device 29 ... Motor 30 ... Support table 31 ... Needle plate 32 ... Pressure plate 32A ... Belt shape Material inlet 35 ... Roller plate 36 ... Roller plate 38, 39 ... Roller 40 ... Main body portion 41 ... Supply portion 42 ... Pillar 43 ... Support body 44 ... Spool 47 ... Control device 50 ... Sewing machine signal generating device 51 ··· Tension detection device 52 ... Switch 53 ... Operation piece 55 ... Cut-off device 60 ... Switching command device

Ss ... tension signal

Sd29 ... supply drive signal

Sd27 ... Feed drive signal

Sc ... cut off signal

Sr ... turn signal

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Claims (1)

200306371 Pickup and application patent scope 1. A control device (21, 21A) of a sewing device (30, 20A, 20B), the sewing device includes: a sewing unit (25); used to feed a ribbon (23) into the sewing Feed device (26) in unit (25); feed drive device (27) driving feed device (26); feed device (28) feeding ribbon (23) into feed device (26) ); The supply driving device (29) for driving the supply device (28), characterized in that: A control unit (47) for synchronizing the sewing operation of the sewing unit (25) and controlling the feed drive (27) and the supply drive (29) is provided. 2. The control device of the sewing device according to item 1 of the scope of patent application, characterized in that the control unit (47) controls the feed drive device (27) and the supply drive device (29) to control the feed device (26) The feeding speed to the ribbon (23) is the same as or slightly beyond the feeding speed of the feeding device (28) to the ribbon (23), and according to the feeding device (26) and the feeding device (28) The tension of the belt (23) controls the supply driving device 15 (29). 3. The control device of the sewing device according to item 2 of the scope of patent application, characterized in that it has a tension for detecting the tension of the ribbon (23) between the feeding device (26) and the feeding device (28). Detection device (51); when the tension detected by the tension detection device (5 1) is more than a predetermined set tension of 20, the control device (47) controls the supply driving device (29) to increase the supply device (28) to the belt shape Supply speed of the object (23). 4. The control device of the sewing device according to item 1 of the scope of patent application, characterized in that the feeding device (26) can feed and stop the ribbon (23) into the sewing unit (23) in the feeding state Feed the ribbon 40 into the sewing unit (25) 20032003371 Pick up and apply for the patent range (23) and allow the ribbon (23) to pass freely; the control circuit (47) can be switched at the first The control state is switched between the control state and the second control state. The first control state means that when the sewing operation of the sewing unit (25) is in the preset first operation state, the feeding device (26) is set to Passing the allowable state and stopping the operation of the feed drive device (27), the supply drive device (29) is controlled to supply the ribbon (23) from the supply device (28); the second control state refers to the sewing of the sewing unit (25) When the operation is in the second working state different from the first working state, the feed driving device (26) is controlled to make the 10 feeding device (26) into the feeding state, and the belt (23) is fed by the feeding device (26). ) Submit. 5. The control device for a sewing device according to item 4 of the scope of patent application, characterized in that: a sewing device (20, 20A, 20B) is provided between the sewing unit (25) and the feeding device (26) Cutting device 15 (55) with cutting ribbon (23), The sewing unit (25) cooperates with the cutting device (55), cuts the ribbon (23) according to a predetermined length, and sew on the cloth (22) at the same time. The first working state of the sewing unit (25) is Sewing state of the belt (23) on the clothing (22); the second working state 20 of the sewing unit (25) is after the sewing to the clothing (22) is completed, the belt (23) is cut and Ready to sew the ribbon (23) to the subsequent clothing (22). 41