KANSAI SPECIAL W-8042 User manual

Industrial Sawm? Machines
lllansaillpecial
INSTRUCTION
MANUAL
W-8042
TWO NEEDLE, DOUBLE OHAINSTITCH, FLATBED MACHINE WITH TOP COVER THREAD
THIS MACHINE IS WELL SUITED FOR ATTACHING POCKETS
POR TROUSERS AND JEANS,
W
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INDEX
1. Machine Description
2. Machine Specification
3. Selection of Motor Pulley
4. Lubrication
5. Changing Needles
6. Threading
7. ' Looper Break Down Mechanism
8. Adjustment of Stitch Length
9: Adjustment of Differential Feed Ratio
10. Adjustment of Feed Dog height
11. Needle Clamp Alignment
12. Needle Bar Height
13. Needle to Looper Distance
14. Needle to Looper Clearance
15. Looper Avoid Motion
16. Needle Guard
17. Looper Thread Take-Up Adjustment
18. Needle Thread Take-Up
19. Top Covering Looper Adjustment
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PAGE 1
•1. Machine Description
W8042: Two needle double locked chainstitch machine with top cover
thread for pocket attaching.
W8042-1: Three needle double chainstitch machine with top ,
thread covering the center and right needles. High flat bed
double locked chainstitch machines with top
matic lubrication, double disc rotary take-up and thread tension
release mechanism.
Machine Specifications
number of needle
feed
needle bar needle to
W8042
neeaies
2 / 1/4 /differential/
1
1 00
c
1o
1 r-«
/ 4.0
W8042-1
3 j plain j10.8 /
4.0
Stitch length: 8 to 14 stitches per inch
Needle bar stroke: 31mm
Needle type: UY-128 GAS itlO to y/90
Lubrication system: Fully automatic
Maximum speed: 4500 stitches per minute
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PAGE 2
Machine Speed
RPM
Outside
60HZ
Diameter of Motor Pulley
50HZ
5000
85mm
100mm
4500
75mm
90mm
4000
65mm
80mm
Rotation of the pulley is counter-clockwise
See Figure #1
Figure 1
4. Lubrication
Use a straight mineral oil equivalent to Tellesso # 33
Filling oil resevoir: remove cap A and fill with oil to line B of oil
guage.(Fig.2)
Draining oili Remove screw E to drain oil. Drain and refill with fresh
oil after the first month of operation and every six months thereafter.
Servicing filter; Inspect the filter after 10 days in operation there
after at one month intervals. (Fig 2)
Clean or replace the filter as necessary.
Figure 2
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FACE 3
5. Changing needles
Loosen the set screw replace with a fresh needle of
The scarf of the nee He should face the rear of the machine.CFig.
• X
O
Figure 3
VV
O=correct
X=incorrect
6. Threading ^ Q
Pass both upper and lower threads copectly Adfust
Adjust the tension of thread with the thread tension nut Adjust
SO that satisfactory stitching can be obtained at atension of
as low as practicable.
Figure 4
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PAGE. 4
7. Looper break down mechanism
This machine is supplied with a looper-take down mechanism to elimi
nate the difficulty of threading multiple loopers.
Figure 5
Looper threading as follows:
1. Press at point A in fig. 5 to expose the loopers for easy threading.
2. Press up at point B in fig. 5, or push loopers to the left to return
the loopers to the operating position.
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PAGE 5
.8. Adjustment of feed length
The feed length of this machine is adjusted at 2mm per stitch (12
stitches per inch) when shipped out from the factory. If another
stitch length is required, it can be changed, wrthrn the limits
specified in the specifications on page 2.
Figure 6
a. Loosen Nut A in Fig.6
b Turn screw B (in clockwise direction stitch length will be
smaller L tL counter-clock«ise direction the strtch length wrll
be made larger.)
c. Tighten Nut A
d. Run machine, observe stitch length. u-
Repeat adjustment until proper stitch length is achieved.
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PAGE- 6
9. Adjustment of differential feed ratio
Loosen the nut I and raise the connecting crank H for
differentia? ratio, and lower the crank for decreasing the differen-
tial ratio.
Figure 7
10. Adjustment of feed dog height ^
'.ihen the feed'dog is at its "^^Shest position the teeth
^?al-Led h1°::rfto^::t^?ron^ ^^^d^r^^ar^L^^der It the san,e. height.
( 7
Needle plate
Figure 8
0 . 8-1. 2imn
•i .1 1
ir^'
11. Needle clamp alignment
The needles must be centered in the needle plate holes,
loosen screw A in Fig. 9.
A
Figure 9
To adjust
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PAGE. 7
12. Needle bar height
.•Dimension Yin Fig. 9 should be 10.8 mm when the needle bar is at the
upper most position. To adjust loosen nut F in Fig. 9 set needle bar
to correct height then tighten nut F.
13. Distance between looper and needle
The distance between the tip of the looper and the edge of the needle,
when the looper is located at its farthest position to Che right, must
be 4.0nim (approximately 5/32) Fig. 10
a.
b.
c.
d.
Figure 10
Figure 11
(Adjustment)
Loosen nut A (it has a left hand thread) and nut B (it has aright hand
thread) on connecting rod C. , . / n
Turn the connecting rod C forward or backward to obtain t e
sion. Fig. 11
Re-tighten both nuts, first nut A then nut B.
Make sure both ball joints are in a vertical position.
14. Needle.to looper clearance
The clearance from the looper to the needle when the looper reaches
the center of the needle, the looper will be dead against the needle
with MO needle deflection. Fig. 12
(Adjustment)
r.Move^the'^loopL^holdfr Lrwards or backwards to the proper position
c.Tighten screw E.
-Figure 12-
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PAGE 8 ^
15. Looper avoid mobion
The looper avoid motion on this loo'per across the line
is con?Lled by the looper avoid eccentric. It is located on Che left
hand side of the looper thread take up cam. Fig.iJ
The first screw in the operating direction A should be on the flat of
the main shaft. ;
J ©
Figure 13
16. Needle guard
The needle guard of the W-8042 is mounted on the arm bed ting and is
stationary But, on the W-8042-1 it is mounted on the feed ^rocker so
that the position of the needle guard is moving ^^^h the ^
synchronization of the needle guard is as follows. needle
iLper comes to the middle of the ^®®^l\scarf the tip
should be 1.0 mm below the top edge of the needle guard ATig.
1.0 nun
w-8042
ThiridjustLnt is made by loosening screw B and turning screw C
Tighten screw B CHECK alignment, repeat if necess y.
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PAGE 9
17. Looper thread take-up adjustment:
a. Adjust the clearance between the looper thread retaining finger B and
the bracket E to 6--7mm by loosening the screw F. Fig. 15
b.
c.
Adjust the position of the looper thread guide by ^he screw^G
so that the thread guide hole A shown in Fig. 15 shall be on
line of the main shaft.
Figure 15
6-7ni/in
Main shaft
Timimg of looper thread adjusting cam.
Adjust the screw B so that the looper thread
looper thread adjusting cam when the needle point is on the
the looper. Fig.'16
Figure 16
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PAGE 10
13. Needle thread take-up
When tTie needle bar is at top dead center point "C" of the needle
thread eyelet must be at 3 on the graduated scale. To adjust loosen
screw "C" and adjust. The amount of thread take-up can be adjusted
by loosening screw "D". Raise to reduce take-up amount or lower to
increase take-up amount.. (Fig. 17)
r
Figure 17 'i: >
—
(•CMD-
19. Top covering looper adjustment
a.
Adjust so that the gap between the front hook point of the spreader
looper arid the front needle shall be 0.5 mm when the looper passes
by the front needle, and that the hook point shall be at the point
A on the needle line 3 to 3.5 mm apart from the front needle when
the looper is at its left dead point. To adjust temporarily tighten
the screws L and K. Covering thread guide wire must push the top
cover thread behind the right needle just before the needle bar
reaches top dead center. (Fig. 18)
0, 5tn/m;
I •
Figure 18
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PAGE 11
( 19 continued. . .)
b. Adjustment of spreader looper.
Adjust the distance between the top face of the needle plate and the
lower surface of the spreader looper to 8 mm. Also adjust the distance
between the underside of the spreader thread guide and the top surface
of the spreader looper to 0.5 mm. Adjust the distance between the
spreader thread guide and the *L' guide to 1 mm.
0, 5 m/til
4
0m/ni
•777 / / /; y ! /! /-m-rm-r
M
Figure 19
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