Summary of Contents for HIGHLEAD GC20528-MDZA
- Page 1 GC20528-MDZA/-BDZA 直驱自动剪线针杆离合针送料平缝机 TWIN NEEDLE SPLIT NEEDLE BAR LOCK STITCHER Instruction Manual 使用说明书 上 海 标 准 海 菱 缝 制 机 械 有 限 公 司 SHANGHAI BIAOZHUN HAILING SEWING MACHINERY CO., LTD.
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Page 2: Safety Precautions
3)Precautions for operating conditions: （1）Avoid using the machine at abnormally high temperatures（35 ℃ ）or low temperatures（5 ℃ or higher or lower）. （2）Avoid using the machine in dusty conditions. 2.SPECIFICATIONS Model GC20528-MDZA GC20528-BDZA Max.sewing speed 4000r.p.m 3000r.p.m Application Light weight Medium weight Stitch length... - Page 3 3.LUBRI ICATION 1) Oiling( Fill the e oil reservoir r with oil up to oil level mark.O Oil level should be pe eriodically ch hecked. If oil level is s found below w the level replenish oil l to the oil l level mark.
- Page 4 5.ADJUSTMENT OF NEEDLE BAR STOP POSITION When the pedal is kicked down by heel,the machine stop at“UP”position.If the marks deviate larger than 3mm,adjust as follows: Release the set screw of the magnet positioned piece, adjust the position of magnet positioning piece, until the machine stops in the needle up position (the marker on the pulley and the reference line of motor cover to coincide), then tighten the screws.
- Page 5 8.SELEC CTION O OF THREA It is reco ommended to o use”S”twist t thread in th he left needle e(viewed from front), and “Z”twist t thread in th e right needl le.When discr riminate use “Z”twis st thread in both the nee edles.For bob bbin thread,”...
- Page 6 10.ADJU USTMEN T OF STI ITCH LE ENGTH A AND REV VERSE SE EWING Rotate th he stitch leng gth adjusting d dial to change e the stitch le ength. When pr ress the feed d reversing le ever, reverse sewing will take place.L Loose the lev...
- Page 7 13.BALANCE OF THREAD TENSION 14.ADJUSTMENT OF THREAD TENSION There is virtually no need to adjust the bobbin thread tension, except for special kind of the thread, when slight adjustment will be necessary. Turning the adjusting screw clockwise will increase the tension of bobbin thread, otherwise, the tension of bobbin thread will decrease.
- Page 8 （3）Approximate position of hook “C”screw of hook should be found close to the needle when the needle is at DOWN position. To finely adjust timing between the needle motion and hook Model GC20528-MDZA GC20528-BDZA Stitch length Needle lift A 2.2mm 2.4mm...
- Page 9 EEDLE B BAR STOP P POSITI ION (LEF FT & RIG GHT) Note: T The stopper w wrench can be e operated wh hile the sewing Mac chine running , but the best t way is to adjust while e Take-up leve er stopping at t its highest position.
- Page 10 19.ADJUSTMENT OF FEED DOG HEIGHT Height of feed dog and pressure of presser foot should be adjusted for individual fabric(s) with the following cautions: （1）Fabric will be damaged if the feed dog extends too high,or pressure foot is too large. （2）Even stitch length cannot be assured if the feed dog is too low or pressure foot is too small.
- Page 11 21.RELATIONSHIP BETWEEN HOOK MOTION AND OPENER MOTION （1）Turn the balance wheel by hand and stop when the opener holder is located most remotely from the throat plate. （2）Make sure the gap between the bobbin case holder A and the opener is approximately 0.2mm. （3）If the gap is too large or small,loosen the opener holder set screw B and adjust position of the opener.
- Page 12 23.SAFETY CLUTCH DEVICE Safety clutch device is installed to prevent the hook and cog belt from damage in case the thread is caught into the hook when the machine is loaded abnormally during operation. 1) Function of safety clutch （1）When the safety clutch acts,the belt pulley will be unloaded,then the rotation of hook shaft will stop.The arm shaft only will rotate.Stop the operation of machine.
- Page 13 24.ADJUSTMENT OF THE UPPER FEED If the uneven feeding occurs according to the fabric.Adjust the long hole of the horizontal feed shaft crank(right)to adjust the upper feed length.Adjust as follows: （1）Loosen the bolt. （2）Move the bolt upward to increase upper feed. （3）Move the special bolt downward to decrease the upper feed.The upper feed and the lower feed theoretically becomes equal at the reference line on the feed connection crank(right).
- Page 14 26.INSTALLATION OF MOVABLE KNIFE 1) Installation of movable knife （1）Turn the balance wheel and lower the needle bar to the lowest position. （2）Push the cam follower crank so that the cam roller enters into the thread trimmer cam groove. （3）Turn the balance wheel until the black mark point on the arm meets the white mark point on the balance wheel.Set the cam follower crank at this position with a screwdriver temporarily preventing the cam roller coming out from the cam groove.
- Page 15 27.ADJUSTMENT OF THREAD TRIMMER CAM （1）Turn the balance wheel by hand until the needles reach the lowest position. （2）Maintaining needle position,depress the cam follower crank and put the cam roller into the groove of thread trimmer cam. （3）Turning the balance wheel by hand,adjust the thread trimmer cam so that the movable knife starts moving when the green mark point on the balance wheel...
- Page 16 30.ADJUSTMENT FOR CHANGE OF NEEDLE GAUGE PARTS （1）Replace the throat plate, feed dog and needle clamp.(Since the throat plate and feed dog are special parts designed for thread trimming machine, be sure to use those specified by us.) （2）Lean the machine head backward. （3）Loosen two connecting link clamp bolts J.
- Page 17 31.SPECIFICATIONS OF THE OPERATION PANEL The operation panel is integrated with the motor cover.The operation panel LCD module will display the sewing mode,specifications,bartacking,foot lifting,needle stop position,thread trimmer and low-speed start. Each key on the operation panel diagram as shown. (Left : standard control operation panel Right : integrated control operation panel) Bartacking (ON/OFF)
- Page 18 ADD: 850, Shulin Road, Songjiang District Shanghai, P.R.China 邮编: 201612 Zip Code: 201612 内销业务：电话: 86-21-64061284 传真: 86-21-64462799 零件服务：电话: 86-21-64851424 传真: 86-21-64069792 Overseas Business: TEL: 86-21-64853303 FAX: 86-21-64854304 ADD:RM105,Bld.5 Yuan Zhong Industry Park, No.2007 Hongmei Road, Shanghai, P.R.China 201103 E-mail:sales@highlead.com.cn http://www.highlead.com.cn 制造商保留因技术改进而更改内容的权利，恕不另行通知 2017年12月印制...
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