Instrukcja obsługi Juki MF-7900
Juki
maszyna do szycia
MF-7900
Przeczytaj poniżej 📖 instrukcję obsługi w języku polskim dla Juki MF-7900 (30 stron) w kategorii maszyna do szycia. Ta instrukcja była pomocna dla 9 osób i została oceniona przez 5 użytkowników na średnio 4.4 gwiazdek
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INSTRUCTION MANUAL
MF-7900
No.03
70002027
i
CONTENTS
!. SPECIFICATIONS ..........................................................................................................1
@. CONFIGURATION OF THE MACHINE COMPONENTS ...............................................2
#. INSTALLATION ..............................................................................................................3
1. Installing the machine head onto the table ........................................................................... 3
2. Selecting the motor pulley and the belt ................................................................................. 9
3. Installing the motor .................................................................................................................. 9
4. Setting the belt ........................................................................................................................ 9
5. Installing the belt cover ......................................................................................................... 10
6. Installing the chain ................................................................................................................ 10
7. Installing the thread guide .................................................................................................... 10
8. Installing the needle bar thread take-up cover ................................................................... 11
$. LUBRICATION AND OILING .......................................................................................11
1. Lubricating oil ........................................................................................................................ 11
2. Oiling ....................................................................................................................................... 11
3. Silicon oil lubricating unit ..................................................................................................... 12
%. OPERATION .................................................................................................................12
1. Needle ..................................................................................................................................... 12
2. Attaching the needle .............................................................................................................. 12
3. Threading the machine head ................................................................................................ 13
(1) Standard threading .................................................................................................................. 13
4. Adjusting the stitch length .................................................................................................... 14
5. Adjusting the differential feed ratio ..................................................................................... 14
6.
Adjusting the presser foot pressure......................................................................................... 15
7. Adjusting the thread tension ................................................................................................ 15
^.
ADJUSTING THE SEWING MACHINE .......................................................................................16
1. Adjusting the silicon container thread guide ...................................................................... 16
2. Adjusting the needle bar thread take-up thread receiver .................................................. 16
3. Adjusting the rocking thread take-up .................................................................................. 17
4. Adjusting the spreader thread guide ................................................................................... 17
5. Adjusting the looper thread cam thread guide and the looper thread cam ..................... 17
6. Adjusting the looper .............................................................................................................. 18
7. Adjusting the height of the needle ....................................................................................... 18
8.
Adjusting the rear needle guard ................................................................................................................. 19
9. Relation between the rocking thread take-up timing and the needle thread loop ..............19
(1) Adjustment by the crank ......................................................................................................... 19
(2) Adjustment by the eccentric cam ........................................................................................... 20
10. Adjusting the height of the feed dog ................................................................................... 21
11. Installing position of the spreader ....................................................................................... 21
12. Adjusting the spreader thread guide and the needle clamp thread guide ....................... 22
13. Adjusting the front needle guard ......................................................................................... 22
14. Adjusting the presser foot lift ............................................................................................... 23
15. Adjusting the micro-lifter ...................................................................................................... 23
16. Adjusting the feed locus ....................................................................................................... 24
(1) Retarding the feed driving motion .......................................................................................... 24
(2) Retarding the feed rocking motion ......................................................................................... 25
17. Adjustment value of balloon ................................................................................................. 26
&. MAINTENANCE ...........................................................................................................28
1. Cleaning the sewing machine ............................................................................................... 28
2. Replacing the lubricating oil ................................................................................................ 28
3. Inspectingandreplacingtheoillter .................................................................................. 28
– 1 –
!. SPEcIFIcatIoNS
Model name High-speed, cylinder-bed coverstitch machine
Model MF-7900 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
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)
Needle gauge 3-needle ... 5.6 mm and 6.4 mm
2-needle ... 3.2 mm, 4.0 mm and 4.8 mm
Differential 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 differential link hinge screw is changed)
Micro-differential 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 #1 S (standard #10S)2
Needle bar stroke 31mm (33 mm, when the eccentric pin is changed)
Dimensions (Height) 450 x (Width) 468 x (Length) 264
Weight 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
Differential 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-xed type, Semi-submerged type
Noise
- Equivalent continuous emission sound pressure level (L
pA) 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.
Specyfikacje produktu
| Marka: | Juki |
| Kategoria: | maszyna do szycia |
| Model: | MF-7900 |
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