Duerkopp Adler 841-27 Operating Instruction
Contents Page:
Preface and General Safety Information
Part 1: Operating Instructions Class 841-27
1. Product Description
1.1. Proper Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2.1 Sewing Machine Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2.2 Feed Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2.3 New DÜRKOPP-ADLER-Controls (DAC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 Optional Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2. Technical Data
3. Switching On/Off
3.1 Switching On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Switching Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4. Operating the Sewing Machine Head
4.1 Threading the Needle Thread . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.2 Winding the Underthread . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.3 Inserting the Bobbin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.4 Changing the Needle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.5 Regulating Sewing Arch Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.6 Setting the Buttonhole Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.7 Setting the Number of Stitches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.8 Replacing and Setting the Knife . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.9 Replacing and Setting the Knife (Cutting Block) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.10 Replacing the Plastic Cutting Plate (only with Cutting Block) . . . . . . . . . . . . . . . . . . . . . 18
4.11 Needle Thread Tension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5. Feeding and Sewing
5.1 Reference Position - Starting the Sewing Procedure - Voiding the Feed Procedure . . . . . . . . 21
5.1.1 Reference Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.1.2 Selecting a Sewing Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.1.3 Starting the Sewing Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.1.4 Voiding the Feed Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.1.5 Continuing Sewing after Thread Breakage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.1.6 "No Material under Light Barrier" Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.2 Bobbin Change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.3 Underthread Bobbin Empty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.4 Re-sewing of Buttonholes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.5 Setting of the Clearance of the Buttonholes to the Positioning Edge . . . . . . . . . . . . . . . . . 27
5.6 Programming the Arrangement of the Buttonholes . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.7 Removing Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
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Contents Page:
6. Maintenance
6.1 Cleaning and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6.2 Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
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1. Product Description
1.1 Proper Use
DÜRKOPP ADLER 841-27
The
used for the sewing of light to medium weight material.
Such material is, as a rule, material made up of textile or synthetic
fibers. These materials are used in the garment industry. Generally,
only dry material may be worked with this sewing unit. The material
may not be thicker than
presser foot.
The material may not contain any hard objects because the machine
could otherwise only be operated with eye protection. Such eye
protection is not available at this time. The seam is generally sewn with
sewing yarns of a dimension up to 65/2 Nm (synthetic threads with cotton
covering or synthetic threads). Those wanting to use other threads must
first estimate the dangers arising the refrom and, if necessary, take
appropriate safety measures. This sewing unit may only be installed and
operated in dry and clean premises. If the sewing unit is used on other
premises which are not dry and clean, further measures, which are to be
agreed upon, may be necessary (see EN 60204-31:1999).
We, as a manufacturer of industrial sewing machines, assume that at
least semi-skilled operating personnel will be working on our products
so that all normal operations and, where applicable, their dangers are
presumed to be known.
4 mm
is a sewing unit which can properly be
when pressed together by the lowered
1
1.2 Short Description
1.2.1 Sewing Machine Head
The 841-27 is a sewing unit for the automatic sewing of buttonholes in
shirt and blouse fronts.
Because of the construction of the sewing unit in independent function
modules, such as feed, advancing, sewing station and stacker, a
completely overlapping work procedure is possible.
In the feed unit the fronts (material) are positioned along a stop and at
markers and fixed by a vacuum. After the transfer of the material into
the advancing unit the transport occurs in pre-programmed steps
(buttonhole spacing) to the sewing station. During the sewing of the
buttonholes the advancing unit moves synchronously to the transport
movement of the sewing machine. Then a return to the initial position
and the material is stacked.
–
Double saddle stitch - automatic buttonhole machine with bottom and
top feed.
–
Normal manner of sewing, right side of material (side seen) up
during sewing.
–
Pneumatically-operated cutting system with slot in the needle plate.
–
When the needle thread breaks, the needle thread monitor
interrupts the sewing cycle, the cutting is prevented. Then it is
possible to conduct a repair seam as well as removal of the
material.
–
The underthread quantity is controlled by an underthread counter.
–
Sewing drive via DC motor.
–
Material transport via step motor.
–
Mechanical quick change for the clearance of the buttonholes to
the front edge of the material.
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1.2.2 Feed Unit
The feed unit is prepared for connection to an in-house vacuum unit. A
vacuum distributor with filter is available as optional equipment. It
allows for the attachment of up to 3 sewing units to an in-house
vacuum unit.
If no in-house vacuum unit exists the rotary blower, which is available
as optional equipment, must be ordered. The vacuum performance is
sufficient for 3 sewing units.
1.2.3 New DÜRKOPP-ADLER-Controls (DAC)
The graphical operator guidance occurs exclusively via internationally
understandable symbols.
The various symbols are combined into groups within the menu
structure of the sewing and testing programs.
The simple operation makes possible short training times.
The user has 99 freely-programmable sewing programs and four
sequences which can be called up at his disposal.
Each sequence can be combined in any desired order out of a maximum of
3 buttonhole programs. All programmed buttonholes and sequences can be
saved on a RAM memory card.
The comprehensive MULTITEST testing and error diagnostic system
is integrated in the DAC.
A microcomputer assumes the control tasks, monitors the sewing
process and shows operator errors and malfunctions in the display of
the control panel.
1.3 Optional Equipment
A flexible system of optional equipment allows the sewing unit to be
optimally and economically fitted out for each individual application.
Equipment Material number
Vacuum distributor 0841 597514
Rotary blower 3 x 380-415 V; 50 Hz 9800 810001 1
Rotary blower 3 x 220-240 V; 50 Hz 9800 810001 2
Rotary blower 3 x 220-240 V; 60 Hz 9800 810001 3
Pneumatic connections kit 0797 003031
Halogen sewing light with support 9822 510000
Retrofit kit-block cutting, max. buttonhole length 22 mm 0577 590014
for 0841 E00114 22
Retrofit kit-block cutting, max. buttonhole length 35 mm 0577 590024
for 0841 E00114 35
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2. Technical Data
Machine head: Class 577-1111
Needle system: System 265
(slight ball point)
Needle thickness: [Nm] 70 to 100, Standard 80
Yarns: [Nm] synthetic threads and synthetic threads
with cotton covering up to 65/2
Sewing stitch type: 301/Double saddle stitch
Number of stitches: [min-1] 1000 to 4000
- at delivery 3500
Delivery with 841-E114/22
Number of stitches per seam construct: 91, 120 149
- at delivery 120
Buttonhole length: [mm] max. 22
Buttonhole width: [mm] 4
Incision length: [mm] 6, 8, 10, 12, 14, 16
- at delivery 12
Delivery with 841-E114/35
Number of stitches per seam construct: 127, 149, 173, 223, 261
- at delivery 173
Buttonhole length: [mm] max. 35
Buttonhole width: [mm] 4
Incision length: [mm] 18, 20, 22, 24, 26, 28
- at delivery 20
1
Max. length of the material [mm] 900
Minimum width of the material [mm] 250
Distance between the first and last buttonhole [mm] 650
Clearance between individual buttonholes [mm] 40
Clearance of the buttonhole to the front edge [mm] 10-22
Sewing motor: EFKA DC1600/DA82GL
Nominal rating: [kW] 0,75
Working overpressure: [bar] 6
Air consumption: [NL] approx. 15 per work cycle
Rated voltage: 1~ 190 - 240 V, 50/60 Hz
Electr. connected load [kVA] 1,5
Dimensions: [mm] 2100 x 940 x 1560
Work height: [mm] 930
Weight (without optional equipment): [kg] 290
Specified noise level: Lc dB (A)
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3. Switching On/Off
1
2
3
4
3.1 Switching On
For the operational readiness of the sewing unit the feed rail must be
run into the reference position once after switching on.
The reference position is required in order for the controls to receive a
defined base position for the feed rail.
5
3.2 Switching Off
Caution Risk of Injury !
Do not reach into the motion area of the feed rail 3 during the
reference run.
–
Turn on the switch 1 of the head of the sewing machine.
–
Turn on the main switch 2.
The controls load the machine program.
The DÜRKOPP-ADLER logo appears briefly in the display of the
control panel.
–
The operator is prompted to start the reference run by the
<==== REF
"
–
Operate the start switch 5.
The feed rail runs into its left end position.
–
The screen changes to the main display.
The sewing unit is ready for operation.
–
For switching the rotary blower (optional equipment) on: turn the
switch of the rotary blower to the "I" position.
–
Turn off the main switch 2.
–
Turn off the switch 1 of the head of the sewing machine.
–
The sewing unit is disconnected from the power supply.
It is no longer ready for operation.
–
For switching the rotary blower (optional equipment) off: turn the
switch to the 0 position.
" message.
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4. Operating the Sewing Machine Head
4.1 Threading the Needle Thread
Caution Risk of Injury !
Turn off the main switch 1 of the sewing machine head !
Thread the needle thread only with the machine head turned off.
–
Thread the needle thread as shown in the illustration.
1
9
4.2 Winding the Underthread
3
1
2
4.3 Inserting the Bobbin
–
Place the yarn spool on the yarn stand.
–
Thread the underthread as shown in the illustration.
–
Place the bobbin on winder 1.
–
Wind the underthread clockwise approx. 5 times around the bobbin
core.
–
Swing winder lever 2 to the bobbin and let catch.
–
The bobbin is filled during sewing.
The bobbin can also be filled outside the sewing sequence (see
Chapter Bobbin Change)
–
Winder lever 2 ends the winding procedure as soon as the bobbin
is filled.
–
After the winding, tear off the underthread at thread clamp 3.
Caution Risk of Injury !
Turn off switch 1 for the sewing machine head!
The bobbin can only be changed with the machine head turned off!
10
Removing the empty bobbin.
–
Flip bracket 5 up and remove the bobbin case top with bobbin.
–
Remove the empty bobbin from the bobbin case top.
5
Threading the bobbin
–
Insert a full bobbin into the bobbin case top, the bobbin must
thereby turn counterclockwise when the underthread is pulled off.
–
Guide the underthread through slot 6 under spring 7.
–
Depending on the desired buttonhole, the underthread must be
guided through slot 9 for a
pulled forward over the hook back) or through slot 10 for a
flat-form
–
Cut off the thusly threaded underthread at knife 11.
Setting the underthread tension
–
Set the underthread tension by turning screw 12 so that the bobbin
case slowly lowers under its own weight with the thread end held
tight.
buttonhole (less thread).
raised-form
buttonhole (more thread is
11
6
1
9
12
7
10
Inserting the bobbin case top
–
Place the bobbin case top with bobbin on the bobbin case bottom
taking care that bracket 5 can be heard to catch.
11
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