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<조정방법>

☞ 

풀리를  돌려서  실채기가  최하점에  위치점에  위치했을  때  멈춥니다.

☞ 

노루발  올림을  내립니다.

☞ 

상부상하이송완의  나사②를  풀어  줍니다.

☞ 

완③을  왼쪽으로  보내면,  노루발의  상하량이  크게  되고,  이동발의  상하량은  작게  됩니다.

☞ 

반대로  오른쪽으로  보내면,  노루발의  상하  운동량은  작게  되고,  이동발의  상하  운동량은  크게  됩니다.

☞ 

조정후에는  나사②를  꽉  죄어  줍니다.

      (공장  출하시  노루발의  상하운동량은  3mm,  이동발의  상하운동량은  4.2mm에  조정되어  있습니다.)

2.  Altern ate  up/d own  strok es

    The  best  feed  condition  can   be  obtained  by  ch anging  the  alternate  up/down  strokes  of  working  and

    presser  foot  depending  on  fabrics.

    Example  :  When  slippery  fabric  is  sewn,  reduce  vertical  stroke  of  workin g  foot  and  increase  that  of

                        presser  foot.  This  prevents  slipping.

    <Adjustin g  Procedure>

☞ 

Turn  the  balance  wheel  and  stopt  when  the  take-up  lever  reaches  its  lowest  position.

☞ 

Lower  the  presser  bar  lifter.

  Loosen  the  screw②  in   the  upper  feed  lifting  rock  shaft  crank.

☞ 

Moving  the  crank③  to  the  left  in  creases  the  vertical  stroke  of  presser  foot  and  decreases  that  of

      working  foot.

☞ 

Reversely,  moving  in  to  the  right  reduces  the  vertical  motion  of  presser  foot  and  increases  that  of

      working  foot.

☞ 

After  adjustment,  securely  tighten  the  screw②.

      (vertical  stroke  of  presser  foot  is  factory  set  at  3mm  and  that  of  working  foot  at  4.2mm)

2.  상하운동량

      이동발과  노루발의  상하운동량은  재봉물에  따라

      운동량을  변화하면  좋은  이소요상태를  얻을  수 

      있습니다.

      예)  미끄러지기  쉬운  것을  재봉할  때  이동발의  상하

            운동량을  작게  하고,  노루발의    상하운동량을

            크게  하면  효과적으로  됩니다.

            (재봉물의  미끄러짐을  방지하기  위해서...)

3.  편심륜의  부착  방법

☞ 

손으로  풀리를  돌리고,  실채기를  최하의  위치로

      놓습니다.

☞ 

이  상태에서  편심륜의  나사④를  그림과  같이

      완전히  가로가  되도록  단단히  죄어  주십시오.

 

3.  Mou nting  th e  Eccentric  Rin g

☞ 

Turn  the  valance  wheel  by  hand  to  bring  the

      n eedle  bar  at  th e  highest  position.

☞ 

In  this  state,  locate  ④  in  eccentric  ring  as  shown

      in  the  figure  and  tighten  it.

Summary of Contents for LT2-H650

Page 1: ...LT2 H650 LT2 H6500 UNISON LOCK STITCH SEWING MACHINE WITH THREAD TRIMMER OPERATION MANUAL PART BOOK...

Page 2: ...1...

Page 3: ...UNICORN sewing machine Before using your new machine please read there safety instructions together with the separate instruction manual for the machine With industrial sewing machines it is normal t...

Page 4: ...5 off A S 44 2 40 25 OFF A S A S 3...

Page 5: ...cur install the belt covers to the machine head and motor Be sure to wear protective goggles and gloves when handling the lubricating oil and grease so that they do not get into your eyes or onto your...

Page 6: ...edle when not using the machine and when leaving the machine unattended For machines with automatic presser lifter do not touch the solenoid section because if becomes hot during operation and may cau...

Page 7: ...ician to carry out any maintenance and inspection of the electrical system Turn off the power switch and disconnect the power cord from the wall outlet at the following times otherwise the machine may...

Page 8: ...UNICORN A S 1 2 3 7 3 2 1...

Page 9: ...HEAVY MAX SEWING SPEED 2000 SPM MAX STITCH LENGTH 0 9mm NEEDLE BAR STROKE 36mm FEED DOG HEIGHT 1 2mm PRESSER FOOT HEIGHT USING HAND 8mm USING KNEE 16mm NEEDLE TYPE DP 17 20 23 STITCH ADJUSTMENT DIAL L...

Page 10: ...he installation should be carried out by two or more people Do not connect the power cord until installation is complete otherwise the machine will operate if the treadle is pressed by mistake which c...

Page 11: ...Set the rubber hinges at the table Set the cushions at the four corners of the oil pan Set the oil pan at the table exactly 3 V INSTALLING THE V BELT 15 20 1 THE ROTATIONAL DIRECTION OF THE MACHINE IS...

Page 12: ...INSTALLING THE BOBBIN WINDER ATTACH THE BOBBIN WINDER ON THE TABLE WITH TWO SCREWS 4 INSTALLING SPOOL STAND ASSEMBLY ATTACH THE THREAD SPOOL STAND ASSEMBLY AT THE RIGHT REAR CORNER OF THE TABLE WITH T...

Page 13: ...plenish the oil supply up to the position While operating the machine it is necessary to check the condition of oiling through the oil check window Adjustment of the hook oil lubrication is made by tu...

Page 14: ...downward Wind the thread around the bobbin a few times in the direction of the arrow and then operate the machine If the thread cannot be wound evenly loosen the thread guide screw and move the thread...

Page 15: ...ad as shown in FIG Pull out the end of the thread about 50 through the needle eye 4 HOW TO ROUTE THE LOWER THREAD 1 2 3 Pass the end of the thread through the bobbin case slot IN FIG 1 Pass the thread...

Page 16: ...the counterclockwise by the other hand Holding the lower thread from the underneath of the presser foot and place the lower thread in the back side of needle plate Stop the machine and push the revers...

Page 17: ...on the reverse lever adjust the eccentric pin to the desired direction Clockwise Increase the stitch length in forward decrease the stitch length in back sewing Counterclockwise Decrease the stitch le...

Page 18: ...the upper thread to obtain a good even stitch 9 HOW TO ADJUST THE THREAD TAKE UP SPRING 7 10 20 40 The standard operating range of the thread take up spring is 7 10 The operating range of the thread t...

Page 19: ...by turning the lower thread tension adjusting screw Clockwise The tension is strengthen Counterclockwise The tension is weaken 11 HOW TO ADJUST THE PRESSER FOOT PRESSURE The presser foot pressure can...

Page 20: ...of the thread through a groove of inside the rotary hook 5 Pass the thread under the tension spring 6 Pass the thread through the clearance between the rotary hook and the bobbin case opener 7 Pull o...

Page 21: ...made by removing the presser foot throat plate and feed before adjustment S S S 1 2mm Positioning the hook point With the needle at lowermost position mesh the right hand driving gear small with the...

Page 22: ...eoretically equivalent at the point where the reference line for feed rock shaft crank is aligned with the center of special bolt After adjustment tighten the special bolt 1 6mm 2mm 1 Operating Height...

Page 23: ...esser bar lifter Loosen the screw in the upper feed lifting rock shaft crank Moving the crank to the left in creases the vertical stroke of presser foot and decreases that of working foot Reversely mo...

Page 24: ...orms to the direction line 4 Raise the sewing machine and put in the needle 2 ADJUSTING THE CLEARANCE BETWEEN THE NEEDLE AND ROTARY HOOK 0 05 0 2 Loosen the screws and and move the rotary hook saddle...

Page 25: ...1 1 6mm Rotary hook timing In case of 7 1 Set the stitch length adjusting dial to the position 5 2 Loosen the screws 3EA and turn the rotary hook so that its tip meets the center of the needle when th...

Page 26: ...in case opener have fully retracted in the direction on the arrow by loosening the screw and moving the bobbin case opener to the right or left 6 ADJUSTING THE FEED DOG HEIGHT l 0 Rotate the pulley un...

Page 27: ...e needle to its lowest position 6 Allow 13 5mm gap between the pressure bar and the pressure bar Then finger tighten the feed shaft crank screws and 7 Check to see if the right feed shaft crank is con...

Page 28: ...p is about 0 0 1 between the driving knife and the needle fix the screws A little loosen the bolt screw and the driving knife stopping position 4 If thread is not trim clearly loosen the screw w ith w...

Page 29: ...driving knife lever absolutely sticks to the two stopper pin fixed at the rotary hook fix the connecting board moved along the arrow as the two screw 3 Fix the stud screw at the ball joint bearing 4...

Page 30: ...ry hook knife tip FIG2 Put the roller in the cam after pushing and turn the thread trimmer cam to the counterclockwise Fix the screw when the bearing stop at the cam point the tim the driving knife mo...

Page 31: ...n raise the needle move the screw to the counterclockwise When take down the needle move the screw to the clockwise Adjusting the needle down When raise the needle move the screw to the counterclockwi...

Page 32: ...31 p28 p27 p27 p30 p29 p29 p14 p14 p14 1 p18 p17 p17...

Page 33: ...ding parts p29 p14 After trimming needle thread is too long Pretension is insufficient Needle thread tension releasing timing is too advanced Increase spring pressure p14 After trimming needle thread...

Page 34: ...33...

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