Juki MF-7900D Handleiding
Juki
Naaimachine
MF-7900D
Lees hieronder de 📖 handleiding in het Nederlandse voor Juki MF-7900D (22 pagina's) in de categorie Naaimachine. Deze handleiding was nuttig voor 23 personen en werd door 2 gebruikers gemiddeld met 4.5 sterren beoordeeld
Pagina 1/22
INSTRUCTION MANUAL
MF-7900(D)/UT55,56,57
i
CONTENTS
I. SPECIFICATIONS ...........................................................................................................1
II. AT THE BEGINNING......................................................................................................1
III. INSTALLING THE ACCESSORIES.............................................................................2
1. Installing the presser lifting cylinder 2 ............................................................................................
2. Installing the air regulator 2 ..............................................................................................................
3. Installation and setting SC-921 3 ......................................................................................................
(1) Installing the SC-921 on the table ( Table-mount type ) 3 ............................................................................
(2) Installing the SC-921 on the table ( Semi-submerged type ) 3 ....................................................................
(3) Connecting the cords 4 ...................................................................................................................................
(4) Setting procedure of the machine head 5 .....................................................................................................
(5) Setting the lower stop position of the needle bar 6 .....................................................................................
IV. AIR PIPING DRAWING.................................................................................................7
1. Piping of the thread trimmer device (UT57) 7 ..................................................................................
2. Piping of the thread trimmer device (UT55) 8 ..................................................................................
3. Piping drawing for air blow (UT56) 9 ................................................................................................
4. Adjusting the air regulator 9 .............................................................................................................
V. THREADING THE MACHINE HEAD ..........................................................................10
VI. ADJUSTING THE LOOPER THREAD TRIMMER MECHANISM ...........................11
1. Adjusting the thread trimmer air cylinder ....................................................................................11
2. Adjusting the Lower knife 12 ............................................................................................................
3. Adjusting the position of clamp pressure adjusting spring 12 .....................................................
4. Adjusting the knife engagement and the knife pressure adjusting spring 12 .............................
5. Adjusting the pressure of clamp spring 12 .....................................................................................
6. Initial position of the looper thread trimmer mechanism 13 ..........................................................
7. Adjusting the stopper 13 ...................................................................................................................
8. Adjusting the height of the lower knife 13 .......................................................................................
9. Adjusting the lower knife holder guide 13 .......................................................................................
10. Adjusting the longitudinal position of the blade point of lower knife 14 ......................................
11. Adjusting the thread trimmer sensor 14 ..........................................................................................
12. Adjusting the speed of looper thread trimmer 14 ...........................................................................
VII. ADJUSTING THE THREAD RELEASE MECHANISM ..........................................15
1. Adjusting the disk-rise 15 .................................................................................................................
2. Adjusting the thread release hook 15 ..............................................................................................
VIII. ADJUSTING THE TOP COVERING THREAD TRIMMER MECHANISM ............16
1. Adjusting the engagement of knives 16 ..........................................................................................
2. Adjusting the pressure of clamp spring 16 .....................................................................................
3. Adjusting the position of the blade point of moving knife 16 ........................................................
4. Adjusting the speed of moving knife 17 ..........................................................................................
IX. ADJUSTING THE AIR-BLOW WIPER (UT56) .........................................................18
1. Installing the air-blow wiper 18 .........................................................................................................
2. Adjusting the air-blow wiper 18 ........................................................................................................
X. ADJUSTING THE NEEDLE THREAD WIPER (UT55) ..............................................19
1. Adjusting the clamp spring 19 ..........................................................................................................
2. Installing the needle thread wiper 19 ...............................................................................................
XI. MAINTENANCE ..........................................................................................................20
1. Cleaning the motor fan 20 .................................................................................................................
– 1 –
I. SPECIFICATIONS
Model name High-speed, cylinder-bed coverstitch machine Semi-dry head, high-speed, cylinder-bed
coverstitch machine
Model MF-7900 series MF-7900D series
Stitch type ISO standard 406, 407, 602, and 605
Example of application
Hemming and covering for knits and general knitted fabrics
Sewing speed Max. 6,500 sti/min (at the time of intermittent operation)
V-belt type
Max. 6,000 sti/min (at the time of intermittent operation)
Direct-drive type
Speed of stitch at the delivery:
4,500 sti/min (at the time of intermittent operation)
Max. 5,000 sti/min (at the time of intermittent operation)
V-belt type
Max. 5,000 sti/min (at the time of intermittent operation)
Direct-drive type
Speed of stitch at the delivery:
4,000 sti/min (at the time of intermittent operation)
Needle gauge 5.6 mm and 6.4 mm 3-needle .....
2-needle ..... 3.2 mm, 4.0 mm and 4.8 mm
Dierential feed ratio 1 : 0.9 to 1 : 1.8 (stitch length : less than 2.5 mm)
(1 : 0.6 to 1 :1 .1, when the dierential link hinge screw is changed)
Micro-dierential feed adjustment mechanism is provided. (Micro-adjustment)
Stitch length 0.9 mm to 3.6 mm (can be adjusted up to 4.5 mm)
Needle UY128GAS #9S to #14S (standard #10S) UY128GAS #9S to #12S (standard #10S)
Needle bar stroke 31mm (33 mm when the eccentric pin is changed over)
Dimensions (Height) 450 x (Width) 456 x (Length) 299
Weight 45 kg (With pneumatic type thread trimmer) , 42 kg
Lift of presser foot 8 mm (needle gauge : 5.6 mm without top covering), and 5 mm (with top covering)
Micro-lifter mechanism is provided.
Feed adjustment
method
Main feed ............... dial type stitch pitch adjustment method
Dierential feed lever adjustment method (micro-adjustment mechanism is provided.) .....
Looper mechanism Spherical rod drive method
Lubricating system Forced lubrication method by gear pump
Lubricating oil JUKI GENUINE OIL 18
Oil reservoir capacity Oil gauge lower line : 600 cc to upper line : 900 cc
Installation Table-mount type, Semi-submerged type
Noise - Equivalent continuous emission sound pressure level
(LpA) at the workstation:
A-weighted value of 79.5 dB; (Includes K
pA = 2.5 dB);
according to ISO 10821- C.6.2 -ISO 11204 GR2 at
4,500 sti/min.
- Equivalent continuous emission sound pressure level
(LpA) at the workstation:
A-weighted value of 76.5 dB; (Includes K
pA = 2.5 dB);
according to ISO 10821- C.6.2 -ISO 11204 GR2 at
4,000 sti/min.
Remove xed band ❶ for transportation before setting
up the sewing machine.
II. AT THE BEGINNING
❶
Product specificaties
| Merk: | Juki |
| Categorie: | Naaimachine |
| Model: | MF-7900D |
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