TW200912078A - Driving device of sewing machine - Google Patents

Abstract

In a sewing machine for double chain stitches equipped with a looper thread hanging hook (5) and a thread cutting hook (6), a sequential control unit (7) provided with a sewing machine motor (2) that serves as a drive source of a sewing machine main axis (10) transmits, to the looper thread hanging hook (5) and the thread cutting hook (6), an instruction to cause them to operate in association with respective operations of a looper (30) and a needle (40) according to rotation of the sewing machine main axis (10) that is caused by controlling a drive of the sewing machine motor (2), to realize prevention of raveling.

Description

200912078 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a double sewing machine (a sentence containing a flat seam initial machine) i, which can be implemented to prevent the formation of the seam (four) A special slot drive mechanism on the seam stitching. [Prior Art] Fig. 1 is a plan view of a double-ring stitch (four) stitch formed by a double-ring stitching machine or a flat-stitching machine from the inner side of the cloth. The sewing stitch first stitches are formed in the form of the upper thread 8a, the 8k loop and the lower thread 9 are wound in other loops, and when the end of the thread 9 is cut off in the direction of the arrow in the first moment when the slit is finished. The lower line 9 is 'released from the final loops 8c, 8d of the upper lines 8a, 8b, and the detachment has the characteristic of successively moving toward the start side of the seam. This feature is the opposite of when sewing stitches are unscrewed when sewing errors occur, which can cause the seams (4) to be easily slit when the sewing products are used: 2. There are various proposals for preventing the seams from being prevented. Go. , 中中-, there is a method proposed by the applicant in this case, which is broken and kept under the curved needle to keep the body τ A ice endures enough body. Soon after the sewing is finished, the curved needle is advanced to the left and the sewing is stopped. The lower line of the loop that has passed the line is suspended and kept in this state. After the sewing of the above, the upper line and the lower line are cut off (for example, Yuanli No. 2879399). ...,, 'Japanese specialization, and the applicant of this case also proposed a method, which has the right

2098-9452-PF 200912078 The side penetrates through the loop loop above the looper, and the catch by the tip of the fish is held below the tip of the f-needle, and the hook is captured by the hook in the middle and the hook is held by the hook below. In the lower thread, the tangential hook body which is cut together by the upper thread and the lower thread is cut, and the upper thread and the lower thread after the sewing of the above-mentioned one or more stitches are cut, and the tangential hook body is operated (for example, refer to Japanese Special Opening 2006). -314762 bulletin). Fig. 2 is a plan view showing the stitching stitch formed by the anti-slit method. When the anti-slot method described in Japanese Patent No. 287_ and Japanese Patent Publication No. 2006-314762 is used, the hook line is caught by the lower thread, as shown in Fig. 2, at the *Di production area It is not necessary to form the upper thread 8a, 8b before the sewing is completed, and the final loops 8c, 8d of the 8b are formed on the gans &&<> This kind of winding "the head is shown to be pulled' will not be self-defeating from the final winding road 8c, 8d out, can be used in the sewing stitches at the stage of cracking L BB, your key field does prevent seams 'And you can get the effect of preventing the seams, and the sewing knots are all sweaty and sewed. Sewing stitches are not different and the appearance will not deteriorate. "He slashed his knife and 'when it was cut off by the tangential hooks recorded in the g. 'Japanese Special Open No. 2006-314762, I έ & 扒a reported 'from the final loop 8c, 8d The lower line 9 & the end, as shown in Fig. 2, the imaginary line protrudes from the processing line end. It is in a state of being finely cut. 'No need to [inventory content] Proposed in Japanese patent Chu 0〇 γ? λ No. 2879399 and date Taiyo 20 06-31 4762, the anti-sewing method of Japan’s seven-figure, is in the island of double-ring

2098-9452-PF 200912078 The stitching can be surely prevented from occurring at the end of the sewing end. However, in order to carry out this method, the lower hanging hook body and the tangential hook body must be moved up and down to keep the needle up and down. And the action of moving forward and backward of the looper that keeps the lower thread. In view of such circumstances, it is an object of the present invention to provide an action of a needle body and a looper which must be used for preventing the sewing stitch of a double loop stitch from being opened, and an action of a hook hook body and a tangential hook body which are associated with the thread. A sewing machine drive mechanism that can be realized with a simple control system. The sewing machine drive mechanism of the first aspect is characterized by the first item of the patent application scope. The sewing machine drive mechanism of the second aspect is characterized by the second item of the patent application scope. In the slitting mechanism of the first aspect and the second aspect, the control unit for attaching the control program for the sewing operation to the motor of the sewing machine is also used for preventing the hook from being suspended under the slit. The control mechanism for the movement control of the body and the tangential fishing body can be prevented from being opened with a simple configuration. [Embodiment] Hereinafter, the present embodiment will be described in detail with reference to the drawings. Fig. 3 is a schematic block diagram of a sewing machine equipped with a driving device. The slitting machine 1 shown in Fig. 3 has: the slitting machine spindle 10' is rotated by the belt drive of the sewing machine motor 2 by the devaluation gas &&&<>; and the needle bar drive shaft 'by The belt from the first spindle of the sewing machine is rotated and sewn one by one, and is rotatably attached to the sewing machine head body 12 (4).

2098-9452-PF 200912078 is driven by the looper drive mechanism 3 built in the sewing machine 12 ^ hole end 0卩. The needle bar swaying shaft 11 is driven by a moving mechanism 4 which is stretched over the H (four) bed 12 inside the slit machine arm body 13. ° — The needle bar drive at the tip of the arm body 13 f The ten drive mechanism 3 ′ is a looper 30 provided inside the (4) head body} 2 . Corresponding to the rotary drive from the spindle 1 () of the slitting machine, the mechanism of the left and right retraction and the needle bar drive mechanism 4 are such that the tip of the self-stitching arm body 13 is suspended: the ten-bar wide and the needle at the lower end The body 4〇 corresponds to a mechanism that moves up and down from the rotation drive of the needle bar drive shaft. These institutions 3, 4 are well-known institutions, and the name of the structure is shown in Figure 3, which only shows the functional blocks at each position. Within the sewing machine head 1 2 within # & _ μ. A lower hanging hook body 5 and a tangential body 6 are disposed near the looper driving mechanism 3. The lower-line suspension fishing body 5 and the tangential fishing body 6 are shown in the Japanese Patent Laid-Open No. and the Japanese Patent Publication No. 2, and are related to the f-needle in the inner side of the sewing machine head body 12. The 3G and the needle body 4G can be individually moved forward and backward. In the 3rd towel, the pneumatic cylinder and the function block as the driving source are respectively shown. and

In the third figure, although the banquet name + igA μ L and the needle body 40 are moved up and down, the hook body 5 and the tangential fishing body 6 are hung on the reverse side of the looper drive mechanism 3, but these configurations are It does not mean the actual configuration of the lower hanging body 5 and the tangential hook 6. As described above, the sequence control unit 7 (control unit) is attached to the sewing machine motor 2 as the sewing machine 1 driven from the source. The sequence control unit 7 has a CPU, a ROM, and a RAM, and is driven by the cpu action 5 of the control program written in advance in the ROM by the imitation of the Japanese 3 @ Α @ λ ' straw. A control mechanism for controlling the operation of the blade motor 2.

2098-9452-PF 200912078 The sequence control unit 7 > the seam j that is controlled by the private control is passed through the motor drive circuit 20 to reach the machine 2 from the Shuncheng machine 2, and the sewing machine 2 is driven by the sequence according to the operation. The motor drive circuit 20 of the control unit 7 & private R strict operation command is operated and driven, and the increase or decrease of the rotational speed can be controlled. In the sequence control unit 7, the spindle spindle senser 14 mounted on the spindle machine spindle 1 is output, and the detection result of the sewing machine spindle 1 rotation position is detected, ', and the result is the sewing machine spindle 10 The operation position of the above-described cymbal drive mechanism 3 and the needle bar drive mechanism 4 is rotated, and I's used as the drive for the sewing machine motor 2 as the position indicating the advancing and retracting position of the looper 30 and the up and down movement position of the needle body 40. And stop the control.纟貭 Sequence control unit 7胄 The detection of the rotational position of the sewing machine motor 2 is output from the motor rotation sensor 21 attached to the sewing machine motor 2 through the drive circuit 2〇. The above detection result is used to calculate the rotation speed of the sewing machine 2, that is, the movement speed of the sewing machine 1, and the movement speed of the sewing machine 1 is used as the feedback information when controlling the speed of the horse machine 2 'And' is used for the speed determination of the following anti-sewing action. Further, in the "sequence control unit 7", for the operation operation of the slit (four) i, the spider input number and the stepping signal are output from the foot pedal 15 of the stepping in and the stepping operation. These signals are used as a trigger signal for the driving and stopping of the sewing machine motor 2 and for the anti-seaming operation described below. When the signal is stepped on, the amount of stepping on the foot pedal 15 is included. (4) The motor 2 is driven at a speed corresponding to the amount of stepping on the person. In the driving device of the sewing machine, the output of the sequence control unit 7 for driving control of the sewing machine motor 2 is transmitted through the individual drive circuits 5, 6

2098-9452-PF 9 200912078 The lower hanging hook body 5 and the tangential hook body 6 are reached. The lower hanging hook body 5 and the tangential hook body 6 perform the following advance and retreat operations in response to an operation command issued from the sequence control unit 7 at a predetermined timing when the following anti-slit is performed. The lower hanging hook body 5 and the tangential hook body 6 have a pneumatic cylinder as a driving source as described above, and can advance and retreat corresponding to the driving pressure of the pneumatic cylinder, and in this case, the driving circuit 5〇, 6〇, is an excitation circuit for exciting and demagnetizing the solenoid valve on the supply and exhaust path of the individual actuation pressure. The fishing line 5 and (4) hooks 6 are suspended from the lower line, and other driving sources such as an electromagnetic cylinder can be used. The page sequence control 邛7, and the system may also include an air squeegee for blowing the upper thread on the slash machine 12 to lift the cloth on the sewing machine 12 The press brake cylinder and the like, and the control operations of various auxiliary machines that operate from the start to the end of the sewing process. However, in the following month, only the hooks 5 and the tangential lines are required for the lower thread that must be provided for the anti-slit. The control action of the hook body 6 will be described. ^ The sewing machine caused by the slitting machine 1 is solidified by stepping on the footboard 15, and the control unit 7 drives the sewing machine motor 2 by the speed of '35 to 1 as described above. Control action. The above (4) action is based on the detection of the deviation of the seam fine Μ κ ώ i based on the result of the ❹马(4)(4) 知器=... The rotation speed and the pedaling amount of the pedal 15 are controlled by the shell control. The operation of the looper drive mechanism 3 of the spindle 1G and the operation of the rod drive mechanism 4 are generated by the speed corresponding to the pedal 2 = 1. Advance and retreat action and needle

2098-9452-PF 200912078 Moved down and was fed into the sewing machine. The upper cloth is sewn by the sewing order control unit 7 at the desired speed, and the seam is formed by the helmet and the end of the slap. The actual fabric is the one that is used for the prevention of the opening. Slotting action. Figure 4 Flowchart... Flowchart of the action of the department. φ φ ^ 士, # 未 未 之 之 布料 = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = , stop when the sewing machine motor ^. The temporary stop is performed by referring to the second ==: temporary, the main (4) rotational position, and the needle body =:: = the curved needle 3 〇 is in the vicinity of the left end. Near the dead point and on the 7th floor until the pedal 15 is stepped back, the first step is stepped in. The stepped signal that is to be released is used as the lever 2 to achieve the following actions to prevent the seam. Of course, the sewing-time is interrupted, and the pick-up is started by the operation of the stepping pedal 15. Moreover, in Fig. 4, since the main milk of the Ding 10 is τ π ± although the lack of the surname *, '', to 2 o'clock, the pedal 15 ^ ^ maintains a neutral state ' However, the maintenance of this neutral state is not The '乍' pedal 15 can also be rotated from the neutral state to the neutral state: back to the state. In this case, the sequence control unit 7 starts to operate when the needle body 4 is near the top dead center and the looper 30 is in the vicinity of the left end. In order to prevent the opening of the 'order control (four) 7, the first action is issued to the lower line to hang the fishing body 5, so that the lower line suspension hook body 5 forward and backward movement, and capture (four)

2098-9452-PF 11 200912078 Hold on the lower line of the 銮 & Q n L p needle 30 at the left end and hold it. Next, the sequence control unit 7 sews in the T3 time point of the fourth τ τ 笫 4 map, while referring to the green < initial sewing machine spindle 1 〇 rotation position from the spindle rotation position detector 14 Machine motor 2 sends a bamboo buckle eight. . 乍 7 , while maintaining the hook body 5 by the lower line

In the state of keeping the line down, luxury., ML, Bu implementation - sewing above the needle, in the needle body 4 〇 back to the top dead center and the name + 1 s, 丄 & u test needle 30 back to the left In the state near the end, the sewing machine 1 is stopped. & After this is stopped again, the sequence control unit 7 issues an operation command to the tangent hook body 6, and advances and cuts the above-described cut_6. By this advancing and retracting action, the tangential hook body 6 is captured by at least the upper and lower lines of the hanging hook body 5 in and out of the lower thread and the upper line of the needle pin 3 位于 which is located at the left end and the squat, and the stalk is pulled back. It is cut, and the same, and it is intended to loosen and play the role of keeping the cut line on the side continuous with the looper 30. By the above-described sequence control unit 7 as far as the 〇i 1 motion is made, as shown in Fig. 2, I·green formed before the sewing stops. η ·| 线 Line 8a, 8b The final loop 8C, 8d, the lower 9 series is formed by the other lines, and the wrong stitching form forms a winding sewing stitch. The sewing stitch is produced at the stage of prevention. Slotted. Moreover, the actual needle 3 Q, oblique sum between the above works. _, 0, the positional relationship between the lower hanging hook body 5 and the tangential hook body 6, which are described in the above-mentioned Japanese Patent Application No. 28-No. 9 and Japanese Patent Laid-Open No. Hei 2_____________ The description is omitted. In the driving mechanism of the sewing machine, ^ r is used to prevent the opening, the operation of the bending 30 and the needle 40 is performed after the sewing of the needle, and the hooking of the hook 5 and the cutting before and after the sewing The forward and backward movement of the hook body 6 around the surface c ^ line is attached to

2098-9452-PF 12 200912078 is executed as the operation looper 3〇 sequence control unit 7. <The sewing machine motor 2 of the drive source is a program for the operation of the sequence control unit 7, and is used for executing the above-described rim of the front sequence control unit 7 at the needle β. The fishing line 5 and the tangential fishing body 6 are suspended from the lower line to achieve the round: = 操作 by the operation signal of the foot pedal 15 of the sub-step control unit 7, == the detector Η and the motor rotation detect the "rotation position sequence" The control unit 7 originally has the same signal as the drive for stopping, stopping, and speed control of the sewing machine 2 as a stop and quick production. There is no 1τ detection mechanism. ', , ; In the above-mentioned anti-seaming operation, the sewing operation performed in the state in which the lower line is suspended on the lower hanging fishing body 5 should be changed at the speed at the time of sewing, and it is best to use ls. The figure 5 is not used for the flow chart of the operation of the player's order control unit 7. The action of the board 15 is shown in the fifth step, after the end of the sewing process, the pedal = self-stepping state Returning to the neutral state, the (four) machine ι temporarily stops the spring condition and is opened, and the sequence control unit 7 determines the material: Whether there is operation (step D. When there is no stepping operation (step 1: N0), it is determined whether or not the stepping operation is performed (step 2), when there is no stepping operation (step 2: N0) 'standby until the stepping operation is implemented In this standby room, when the step-in operation is carried out (step 2: like), the anti-sewing operation is terminated without performing the subsequent processing. In this case, the normal sewing process will start again.

When the foot pedal 15 is stepped back (step 1: off, the sewing speed of the previous 2098-9452-PF 13 200912078 is temporarily compared with the predetermined speed N (step 3). The sewing speed is rotated by the spindle. The position detector 14 detects the rotation speed of the sewing machine spindle 10 calculated as a result, and uses the sewing speed before the temporary stop in the comparison in step 3, for example, the average rotation speed of the sewing machine spindle 数 between several rotations before stopping can be used. By comparing in step 3, when it is determined that the sewing speed before the temporary stop exceeds the predetermined speed N (step 3: YES), the sewing speed is set to a speed n which is much slower than the predetermined speed N (step 4), By performing the above-described anti-slot operation (step 5) under the restriction of the speed n, and when it is determined that the sewing speed before the temporary stop is lower than the predetermined speed ( (step 3: NO), the sewing speed is not limited. The anti-slit action (step - the predetermined speed N used for comparison and the speed η ' used in step 3) is regarded as a constant of the pre-write order control section 7, for example, when the speed ^1() is made _ΡΜ When the speed is ^··Qing, when the speed of the quilting before the temporary stop exceeds the _, that is, when the temporary stop is performed while maintaining the high sewing speed, The above-mentioned implementation of the needle stitch (four) is carried out at a speed of 200 RPM. When the temporary stop is performed while maintaining a high sewing speed, the needle body 40 moves to the top dead center and remains above the wire loop. The road is loosened by inertia. By the sequence control unit 7 in accordance with the flow chart of Fig. 5, the anti-seaming action of the f-up line in the loose state is at the speed limit: : It is possible to realize the sewing stitch shown in Fig. 2. The sewing action under the limited catch is to keep the lower thread in the lower thread hanging hook 5

2098-9452-PF 14 The operation of one needle or several needles in the state of 200912078 does not reduce the overall efficiency of the sewing production industry. Further, in the comparison of the step 3, the predetermined speed which becomes the threshold value can be changed from the outside by, for example, operating the variable knob connected to the input side of the sequence control unit 7. In this case, it is possible to implement the change operation of the variable knob in accordance with the type of the sewing cloth and the sewing conditions such as the softness and hardness of the thread, or the quality of the finished state, thereby making it possible to more reliably prevent the opening. Seam. [Simple description of the drawing] Figure 1 shows the double-loop sewing stitch from the inner side of the fabric. ^ 4B m . The top view of the thread is the stitch pattern formed by the anti-slot method. Flow of content Fig. 3 is a schematic block diagram of a sewing machine equipped with a drive device. Fig. 4 is a view showing the operation of a sequence control unit for preventing seaming.

Sequence control unit operation Contents [Description of main component symbols] Sewing machine Sewing machine motor Knee-needle drive mechanism Needle bar drive mechanism

2098-9452-PF 15 200912078 5 Lower hanging hook body 6 Tangential hook body 7 Sequence control unit 9 Lower thread 10 Sewing machine spindle 11 Needle bar drive shaft 12 Sewing machine 13 Sewing machine arm 14 Spindle rotation position detector 15 Foot pedal 20 Motor Drive circuit 21 motor rotation detector 30 curved needle 40 needle body 50, 60 drive circuit 8a, 8b upper line 8c, 8d loop 16

2098-9452-PF

Claims (1)

200912078 X. Patent application scope: i A driving mechanism of the squeezing machine, which is synchronized with each other to generate a private sewing machine motor, which is also a heavy-duty sewing stitch, and the front movement is maintained under the aforementioned bending needle. The lower (four) hook includes a body that is held on the hook line of the lower thread and a tangential body that is cut by the captured line; 'maintaining the needle body to drive the drive of the seam machine, Stop and speed action and then describe the movement of the hook and the straight φ, the movement of the ', 1, % ~ basket, and the control section is used to prevent the shackles from being tied to the seam. The sewing process of the rush stitch: the skein is opened, and after the 44-bundle of the hem, the needle is combined with one of the needles and the needle is operated to make the above action. Green suspending 'hook body and tangential hook body 2 · As in the scope of patent application, the medium-sized medium ^ ^ Λ 迷 之 之 之 之 之 之 之 之 缝纫 缝纫 缝纫 缝纫 缝纫 缝纫 缝纫 缝纫 缝纫 缝纫 缝纫 缝纫 缝纫 缝纫 缝纫 缝纫 缝纫 缝纫 缝纫 缝纫 缝纫 缝纫 缝纫 缝纫 缝纫 缝纫 缝纫 缝纫The speed of movement of one needle or more corresponds to the speed of the work before the end of the sewing process. 3. In the sewing machine drive mechanism of claim 2, the rigid-edge control unit compares the fixed speeds of the sewing brake mechanisms, and when the operating speed of the sewing process is the same as the predetermined speed, The aforementioned needle body: No: the speed of the movement speed is changed to a lower degree than the predetermined speed. 4. For example, in the second paragraph of the patent application scope, +, Zhong, Yu, +, ¥ *, and the sewing machine drive mechanism of the hall speed, the control department only terminates the sewing work speed and the end of the sewing process. The front movement speed is compared with the ambiguity and the U. When the sewing speed of the sewing machine β,, and = is lower than the predetermined speed of 2098-9452-PF 17 200912078, do not change the needle and the curved needle. More than one stitch speed. 5. The sewing machine drive mechanism according to claim 1, wherein the control unit determines the end of the sewing process based on the input signal. 2098-9452-PF 18