In mechanical and electrical products in automatic opening bag applied successfully on board

In mechanical and electrical products in the automatic bag on the successful application in product application engineer Chen Huiping welcome visit exhibition hall 2 e/leather/shoe machinery exhibition hall sewing machine, sewing machine, overlock machine, binding machine, locked stitcher. 。 。 Abstract: this paper introduces the use of DOP - A57CSTD touch screen ( HMI） , DVP32EH00T2 programmable controller ( PLC） With ASD - B series ac servo, realize the precise control of the suit pocket sewing, make the operation more convenient, more accurate positioning at the same time, greatly improving the production efficiency and product quality, for the enterprise to win greater economic benefit and social benefit. Key words: automatic bag opening machine industrial sewing machine man-machine interface PLC controller servo motor 1 preface as people living standard unceasing enhancement, the quality of clothing, sewing process requirement also more and more high; Long-term excessive competition, traditional sewing machine manufacturing, profit ability drops greatly; And open the bag before still parked in the manual stage, production efficiency is low, quality is not stable; Therefore should be customer needs and the needs of the development of enterprise, is mainly used in high-grade suit automatically open bags of equipment also arises at the historic moment. In today's labor costs rising, further development for the enterprise to enhance the competitiveness. Figure 1 for automatic bag opening machine physical figure. Figure 1 automatic bag opening physical figure 2 bag opening machine to introduce the machine head by a dedicated servo motor drive, high-speed needle sewing at a fixed speed. Application in high performance EH2 series programmable controller, through high-speed pulse console for ASD - B series servo motor drive big presser foot feed at different rates, so as to complete the 'thick seam - seam and thick seam', Angle cutter, strip cutter for center accurate positioning, coupled with a friendly interface and formula function implements the bag cover, fixed-length, cycle different process requirements. Corresponding relationship is shown in figure 2. Figure 2 automatic bag opening machine center line and Angle cutter line and the relationship between the thick seam length 1) Special purpose, the nose: industrial sewing machines, servo motor control, rated speed 2000 RPM, with the function of automatic positioning; 2) , or so big presser foot: to press the cloth in mesa, by continuous feed servo motor drive. And can prevent the fabric seam shrinkage and wrinkling; 3) Presser foot, around the bag cover: will compress bag cover and follow the presser foot; Prevent pocket flap seam shrinkage and wrinkling; 4) , the upper and lower shear line: cut thread ends up and down; 5) , the Angle of knife: fixed Angle and dynamic Angle of knife, dynamic servo drive Angle of the knife, ensure open Angle position; 6) , center knife: fixed center knife and moving knife, dynamic center knife servo drive, ensure open bag length; 7) , discharge frame: molding bag cover automatic discharge; 8) , cross laser: fabric reference positioning; 9) Cover sensor, laser magic eye: bag; 10) , line: keep line tension and bolt detection; 11) , pedal switch: driving design: start, stop right foot one foot control; Control system: 3. 1 equipment configuration of the electrical specifications as shown in table 1, table 1 system equipment configuration table 3. 2 system block diagram system block diagram as shown in figure 3: figure 3 control system block diagram automatically open bag machine control system used in man-machine interface as master station monitoring equipment, DOP - use of man-machine interface B05S100 RS232 communication port. PLC controller host DVP32EH00T2 adopt RS232 communication port connected to the HMI devices, at the same time using the RS485 communication port with ASD - servo drives B0421 - A connected, servo drives via U, V, W ECMA - port control servo motors 30604 es, and then control the bag opening machine to process operations. Man-machine interface to set target speed motor, read the actual motor speed. 4 operating system control flow, and the upper machine: origin point before a big presser foot pressing around - > - > welt cover around the presser foot pressing - > bag cover presser foot pressing - > start - > servo feed - > laser photoelectric induction - > close seam before the sewing machine head start - > - > Angle cutter move thick seam length arrived before - > - > center knife move - > seam start - > laser magic eye out - > center knife move to stop - > after arrive thick seam after start - > close seam length - > sewing machine head stop - > dynamic Angle mobile stop - > Angle knife up - > open Angle line Angle knife down - > servo feed into a - > loosen about bag cap presser foot - > loosen welt cap presser foot - > about big presser foot - > unloading; Then press to start the cycle. Its upper machine operation screen as shown in figure 4. Figure 4 PC operation picture 5 debugging notice: this machine frame structure is simple, in order to facilitate mobile, castor with belt brake, rigid obviously inadequate. And in normal work, because around big presser foot, Angle cutter, strip cutter for center cylinder pressure to loosen, the load inertia cycle, increasing the difficulty of servo control. In order to ensure the stability of cloth in the process of speed, line stitches even, the gain of the servo controller must be maintained at a high level, but since almost don't allow any vibration, servo control system gain and cannot too big, or in the thick seam - seam - sewing process will appear obvious 'jump needle', so must be at a high speed, stable response and find a balance between speed control. 6 conclusion this system main control components are all made in mechanical and electrical products, the integration of the integration plan, not only reduces the manufacturing cost of equipment, greatly improved the precision of system automation and control, fully reflected in the characteristics of high performance and high cost performance, mechanical and electronic products for customers to win considerable economic benefits. 【 Reference 】 ( 1] In DVP - Technical manuals, PLC controller application in internal data, 2007 [ 2] In DOP man-machine interface application technical manuals, Taiwan 2007 [internal data 3] Selection and application of inverter in industry following the party liu technologies such as information 2009, 23
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