Anita Guardan GF-137-443 MH/L38 User manual

Operation Manual
GF-137-443 MH/L38
GF-137-448 MH/L38
GF-237-443 MH/L38
GF-237-448 MH/L38
ANITA B, s.r.o.
Průmyslová 2453/7
680 01 Boskovice
Czech Republic
tel: [phone]
fax: [phone]
e-mail: [e-mail]
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CONTENTS
1. Specification --------------------------------------------------------------------------------------------------------------4
2. Threading of upper thread -------------------------------------------------------------------------------------------5
2.1) Threading scheme ----------------------------------------------------------------------------------------- 5
2.2) Threading of upper thread ------------------------------------------------------------------------------ 6
3. Setting upper thread tension --------------------------------------------------------------------------------------- 7
4. Setting thread regulator -----------------------------------------------------------------------------------------------9
5. Winding of hook thread ---------------------------------------------------------------------------------------------10
6. Exchange of hook thread bobbin --------------------------------------------------------------------------------11
7. Setting hook thread tension --------------------------------------------------------------------------------------12
8. Changing the needle in 1-needle machines ------------------------------------------------------------------13
9. Changing the needle in 2-needle machines ------------------------------------------------------------------14
10. Lifting of presser feet ----------------------------------------------------------------------------------------------15
11. Locking the presser feet in the upper position ------------------------------------------------------------16
12. Setting the presser foot pressure ------------------------------------------------------------------------------16
13. Setting the presser foot stroke --------------------------------------------------------------------------------- 17
14. Setting the stitch length -------------------------------------------------------------------------------------------18
15. Key panel on the machine arm ----------------------------------------------------------------------------------19
16. Sewing -------------------------------------------------------------------------------------------------------------------20
17. Adjustment of feeding ---------------------------------------------------------------------------------------------22
17.1) Feed position ---------------------------------------------------------------------------------------------22
17.2) Setting position of feed dog ----------------------------------------------------------------------------23
17.3) Adjustment of feed -------------------------------------------------------------------------------------- 24
17.4) Adjustment of feed dog --------------------------------------------------------------------------------25
17.5) Position between needle and feed dog ----------------------------------------------------------- 26
17.6) Front and back position of needle -------------------------------------------------------------------27
17.7) Adjustment of the looper time -------------------------------------------------------------------------28
17.8) Needle position ------------------------------------------------------------------------------------------ 29
17.9) Posotion between needle and hook ----------------------------------------------------------------30
18. Setting of needle guard ------------------------------------------------------------------------------------------ 31
19. Setting of inner hook --------------------------------------------------------------------------------------------- 31
20. Adjustment of trimming ------------------------------------------------------------------------------------------ 33
21. Adjustment of knife position ----------------------------------------------------------------------------------- 34
22. Setting tension of gripping spring ---------------------------------------------------------------------------- 34
23. Maintenance ---------------------------------------------------------------------------------------------------------- 35
24. Lubrication by oil --------------------------------------------------------------------------------------------------- 37
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1) SPECIFICATION
Model
GF-137-443
MH/L38
GF-137-448
MH/L38
GF-237-443
MH/L38
GF-237-448
MH/L38
Usage
Medium and heavy weight materials
Systém mazání
Automatic
No. of needles
1
1
2
2
Thread trimming
Ne
Ano
Ne
Ano
Hook
Large diameter, vertical (bobbin diameter 32mm)
Maximum speed
Stitch Length
Presser foot lift
(mm)
Stitches/minute.
0-6
1
2
3
4
3500
3200
3000
2800
7-12
1-9
1500
Maximum stitch length
(mm)
12
Needle bar stroke (mm)
40
Presser foot lift (mm)
20
System of automatic
trimming
---
Pneumatic
cylinder
---
Pneumatic
cylinder
Needle
DP
×
17#21 (#18
∼
#23)
134-17 (Nm80~160)
Sewing space (mm)
380 x 130
Motor
Servo(600W)
Clutch motor
Servo (750W)
Servo (600W)
Clutch motor
Servo (750W)
Automatic thread trimming
---
Standard
specification
---
Standard
specification
Backtacking lever
Standard specification
Automatic backtacking
---
Standard
specification
---
Standard
specification
Automatic presser foot lift
---
Standard
specification
---
Standard
specification
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2) THREADING OF UPPER THREAD
2.1 Threading scheme
Single needle machine
Double needle machine
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
26
27
28
21
22
23
24
25
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2.2 Threading of upper thread
- Turn off the main switch! Threading may only be performed if the
sewing machine is turned off.
Threading of single needle machines
- Insert the thread cones on the stand and lead the upper thread through
the unwinder arm. The arm must be in vertical position above the
thread reels.
- Lead the thread thrrough guides 1,2 and 3.
- Conduct the thread clockwise around auxiliar tensioner 4.
- Conduct the thread counter-clockwise around additional tensioner 5.
- Conduct the thread clockwise around main tensioner 6.
- Lead the thread under spring 12 a pass throuhg thread regulator 13 up
to thread take-up lever 14.
- Pass the thread through take-up lever 14, thread guides 11,10, thread
holder 9 and thread guides 8 and 7.
- Insert the thread into the needle eye
Threading of double needle machines
- Insert the thread cones on the stand and lead the upper thread through
the unwinder arm. The arm must be in vertical position above the
thread reels.
Left needle thread (the same as for single needle machines)
- Insert the thread cones on the stand and lead the upper thread through
the unwinder arm. The arm must be in vertical position above the
thread reels.
- Lead the thread thrrough guides 1,2 and 3.
- Conduct the thread clockwise around auxiliar tensioner 4.
- Conduct the thread counter-clockwise around additional tensioner 5.
- Conduct the thread clockwise around main tensioner 6.
- Lead the thread under spring 12 a pass throuhg thread regulator 13 up
to thread take-up lever 14.
- Pass the thread through take-up lever 14, thread guides 11,10, thread
holder 9 and thread guides 8 and 7.
- Insert the thread into the needle eye
Right needle thread
- Lead the thread through guides 15,16 and 17.
- Conduct the thread clockwise around auxiliar tensioner 18.
- Conduct the thread counter-clockwise around additional tensioner 19.
- Conduct the thread clockwise around main tensioner 20.
- Lead the thread under spring 26 and pass through thread regulator 27
up to thread take-up lever 28.
- Pass the thread through take-up lever 28, thread guides 25,24, thread
holder 23 and thread guides 22 and 21. Then insert the thread into the
needle eye.
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3) SETTING UPPER THREAD TENSION
4
5
1
2
3
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Auxiliary thread tensioner
If main tensioner 2 and additional tensioner 3 are open, still, small amount of
sub-tension is needed. This sub-tension is regulated by auxiliary tensioner 1.
This tensioner, at the same time, controls length of the thread ends after
trimming (thread ends for next stitch).
- Basic setting:
Turn the plate 4, until its front side is in level with the pin 5.
- Short threads ens for start of sewing:
Turn the plate 4 clockwise.
- Longer threads ens for start of sewing:
Turn the plate 4 counter-clockwise.
Main tensioner
It is necesary to set minimum tension on main tensioner 2.
Crossing of threads should occur in the middle of the sewn material.
Too high thread tension can cause unwanted deformation of thin materials or
thread breakage.
- Set the main tensioner 2 in order to reach constant stitch composition.
To increase the tension – turn the wheel clockwise
To lower the tension – turn the wheel counter-clockwise
Additional tensioner
Additional tensioner 3 is used for quick change of upper thread tension, for
example in heightened points of seams.
- Set addiotional tensioner 3 lower than main tensioner 2.
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4) SETTING THREAD REGULATOR
Turn off main switch. The thread regulator may only be adjusted with the sewing
machine switched off.
The thread regulator controls the quantity of thread required for stitch formation.
The thread regulator must be precisely adjusted for an optimum result.
With correct setting the needle-thread loop must slide with low tension over the
thickest point of the hook.
- Loosen screw 1.
- Adjust position of the thread regulator 2.
Thread regulator to the left = more thread
Thread regulator to the right = less thread
- Tighten screw 1.
Adjustment information:
If the maximum quantity of thread is required, the thread-tensioning spring 3 must be
pulled upwards about 0,5mm from its lower limit position. This is the case, when the
needle-thread loop passes the maximum hook diameter.
2
1
3
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5) WINDING OF HOOK THREAD
- Put the thread cone on the thread stand and conduct the thread through
the unwinder arm.
- Pass the thread through thread guide 1 and tensioner 2.
- Pull the thread beginning behind the tear-off knife 3 and tear it off.
- Insert the empty bobbin on the winder.
- Press the winder lever 4 against the bobbin.
- Start sewing.
Winder levet will stop the process of winding when the bobbin is full.
The winder alaways stops when the knife 3 is in the upper position like
indicated on the right picture.
- Take out the full bobbin, pull the thread behind the knife 3 and tear off.
- Insert new empty bobbin and press the winder lever 4 against the
bobbin.
- If the thread is not supposed to be wound, it is necessary to fix the
presser foot in the upper position and adjust the presser foot lift for the
minimum value, otherwise breakage can occur.
1
1
2
3
4
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6) EXCHANGE OF HOOK THREAD BOBBIN
Turn off the main switch. Hook thread bobbin may only be replaced if is machine is
turned off.
Taking out the empty bobbin
- Raise the flap 1 and take out the empty bobbin.
Inserting the full bobbin
- Insert the bobbin 2 in a way that it moves in counter-clockwise direction
against the hook when unwinding the thread.
- Conduct the lower thread through the slot 3 and pass it underneath the
sping 4.
- Pull the thread through the slot 6 and continue pulling until it stands out
about 3cm.
- Close the flap 1 and pull the thread through the flap guide 5.
1
2
3
4
5
6
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7) SETTING HOOK THREAD TENSION
Turn off the main switch. Lower thread tension may only be adjusted only if the
machine is switched off.
Adjustment of tension spring 2
- Set the tension spring 2 by the regulating screw 1.
Increase the tension = turn screw 1 clockwise
Decrease the tension = turn screw 1 counter-clockwise
1
2
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8) CHANGING THE NEEDLE IN 1-NEEDLE MACHINES
Turn off the main switch. Needle may only be changed if the machine is switched off.
- Turn the handwhell until the needle bar reached its upper end position
- Loosen screw 2
- Take out needle from the needle bar 1.
- Insert the new needle properly into the needle bar hole, aligning it so
that the needle groove 3 points to the hook.
- Tighten screw 2.
If needle with a different size is inserted, distance between hook and needle must be
adjusted, otherwise following faults can occur:
If thinner needle is used:
- Missing stitches
- Thread damage
If thicker needle is used:
- Damage of hook tip
- Damage of needle
1
2
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9) CHANGING THE NEEDLE IN 2-NEEDLE MACHINES
Turn off the main switch. Needle may only be changed if the machine is switched off.
- Turn the handwhell until the needle bar 1 reached its upper end position
- Loosen screw 3
- Take out needle from the needle bar holder 2.
- Insert the new needle properly into the needle bar hole 2, aligning it so
that from view of operator the right needle groove 4 points to the right
and left needle groove to the left (see picture above).
- Tighten screw 3.
If needle with a different size is inserted, distance between hook and needle must be
adjusted, otherwise following faults can occur:
If thinner needle is used:
- Missing stitches
- Thread damage
If thicker needle is used:
- Damage of hook tip
- Damage of needles
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10) LIFTING OF PRESSER FEET
Presser feet can be lifted electro-pneumatically by actuating the pedal 2 or by
pressing knee lever 1.
Mechanic lifting of presser feet (knee lever)
- In order to move material, correcting its position, press the knee lever to
the right. Presser feet will remain lifted all the time when knee lever 1
is pressed.
Electropneumatic lifting of presser feet (pedal)
- Press the pedal 2 halfway back.
The presser feet will remain lifted with the machine at a halt.
- Press the pedal 2 all the way back.
The thread trimmer will be actuated and presser feet will be lifted.
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11) LOCKING THE PRESSER FEET IN THE UPPER POSITION
- Turn the lever 1 downwards. The presser feet are locked in their utmost
upper posiion.
- Turn the lever 1 upwards. The presser feet are released.
Or
- Lift the presser feet pneumaticaly by the foot pedal or mechanically by
the knee lever . The lever 1 will turn back to its initial position.
12) SETTING THE PRESSER FOOT PRESSURE
Required pressure of presser foot can be adjusted by the regulating knob 2.
Note that the sewn material must not be loose.
At the same time, pressure must not be higher than required.
- Increase of pressure = turn the
knob 2 clockwise
-
- Decrease of pressure = turn the
knob 2 counterclockwise
1
2
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13) SETTING THE PRESSER FOOT STROKE
Sewing machines GF-137/237-series are always equipped with 2 dials for setting the
presser foot stroke.
Left dial 2 controls standard presser foot stroke in the range of 1 to 9mm.
Right dial 1 controls increased presser foot stroke in the range of 1 to 9mm.
- Turn the dials 1 and 2 (value 1-9)
1 = minimum presser foot stroke
9 = maximum presser foot stroke
Presser foot stroke and number of stitches are interdependent.
The potenciometer is mechanically connected with the dials and the control unit can
thus recognize the set presser foot stroke, limiting the sewing speed (number of
stitches) automatically.
The machine is equipped with the system of quick electropneumatic setting of
presser foot stroke.
When cross seams or heightened/reinforced points of material are sewn, increased
secondary presser foot stroke (dial 1) can be activated by pressing the knee lever 3.
Note – standard presser foot stroke set by the dial 2 must not have higher value than
increased presser foot stroke set by dial 1.
2
1
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14) SETTING THE STITCH LENGTH
Sewing machines GF-137/237-series are always equipped with 2 knobs for setting
the stitch length. This enables operator to sew with 2 different lengths of stitch which
can be activated via special key (see following chapter)
Stitch length can be set by knobs 1 and 2 on the machine arm.
- Upper knob 1 sets longer stitch length
Position 1 = minimum stitch length
Position 12 = maximum stitch length
- Lower knob 2 sets shorter stitch length
Position 1 = minimum stitch length
Position 12 = maximum stitch length
Stitch lengths for sewing forward and backwards are identical.
- For manual bartacking press the lever 3 downwards. Machine will start
to sew backwards all the time when the lever 3 is pressed.
Note:For easy setting the knob 2 (see following chapter) should always set the
initinal stitch length which remains unchanged.
Note.: The stitch lenght set by lower knob 2 must not have higher value than the
stitch length set by the upper knob 1.
1
2
3
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15) KEY PANEL ON THE MACHINE ARM
Key
Function
1
Quick presser feet stroke adjustment
Light is on = maximum presser feet stroke
Light is off = minimum presser feet stroke
2
Additional thread tension
Light is on = additional thread tension is activated
Light is off = additional thread tension is turned off
3
Second stitch length
Light is on:
Longer stitch length (upper knob) is activated
Light is off:
Shorter stitch length (lower knob) is activated
4
Activating or surpressing the initial or final bartack
If the initial and final bartacks are switched on, by pressing the key the
following bartack will be switched off.
If the initial and final bartacks are switched off, by pressing the key the
following bartack will be switched on.
5
Setting upper and lower position of needle.
1 = Needle in upper position
2 = Needle in upper/lower position
3 = Single stitch
4 = Single stitch with second stitch length/shorter stitch
5 = Needle in upper position, when outside position 2
6
Manual backwards sewing.
The machine sews backwards as long as the key is pressed.
1
2
3
4
5
6
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16) SEWING
Operation steps and sewing functions:
Sewing operation
Operation / Instructions
Before start of sewing:
Initial position
Place the sewn material at the
beginning of seam
Pedal at stop position
Sewing machine at a halt
Needle is up
Presser feet are down
Press the pedal halfway back
Lift the presser feer
Place the sewn material under the needles
Sewing Press the pedal forward and keep it
pressed.
The machine continues to sew at speed
controlled by the pedal.
In the middle of the sewing:
Stop sewing operation
Continue sewing operation
Release the pedal (stop position)
The machine stops in the 1st position
(needle is down). Presser feet are down
Press the pedal forward.
The machine continues to sew at speed
controlled by the pedal.
4
1
2
3
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