Strobel VTD410EV User manual

For the professional user
Für den professionellen Anwender
Mechanikeranleitung
Class:
Klasse:
Model:
Ausführung:
Dated:
Stand:
VTD410EV
2
Spezialmaschinen GmbH
Mechanic‘s Instructions

Im Zeichen der Qualität
ou nd the Strobel trademark on every Strobel
machine leaving our works. And with good reason.
This symbol is a guarantee of the high quality of
our products. Quality which creates trust – trust
in our technology, our service and, not least of all,
in our good name.
ie nden die Strobel-Schutzmarke auf jeder
Strobel-Maschine, die unser Werk verlässt.
Und das aus gutem Grund. Denn dieses Zeichen
garantiert Ihnen die hohe Qualität unserer
Produkte. Qualität, die Vertrauen schafft – in unsere
Technik, unseren Service und nicht zuletzt in unseren
guten Namen.
S
Y
The sign of quality

trobel clients know that they can expect a particularly
high standard of performance from our company and our
machines. Now you have settled for one of our products.
For us this is a source of encouragement and of obligation
to Justify your trust.
If you wish to prot from the performance and efciency of
your Strobel machine as long as possible, exact handling
and thorough care is necessary. For this reason we kindly
request that you read the operating instructions closely.
It provides all the information you need for trouble free
operation.
And if you do happen to need a spare part the enclosed
spare parts list gives a complete overview. It is clearly
classied according to components so that you can nd the
required part quickly and easily. In order to avoid errors we
request you to quote machine class, machine number and
part number completely on your spare part order.
We wish you lots of success in your work with your new
Strobel machine.
S
A decision with future
Spezialmaschinen GmbH

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Mechanics instruction
STROBEL-Class VTD410EV
Contents
1General notes on safety............................................................................................5
2General .....................................................................................................................7
2.1 Operating instructions.....................................................................................7
2.2 Class identification, serial number and orientation of the machine.................7
2.3 Range of application and intended use..........................................................7
2.4 Technical data................................................................................................8
2.5 Brief setting instructions .................................................................................9
3Hints for repair and settings ....................................................................................10
3.1 Pre-assembly................................................................................................10
3.2 Main shaft assembly.....................................................................................11
3.2.1 Removing the main shaft .................................................................11
3.2.2 Remounting the main shaft..............................................................12
3.2.3Assembly of stitch regulating eccentric............................................13
3.3 Needle bar....................................................................................................15
3.3.1 Needle adjustment...........................................................................15
3.3.2 Needle height adjustment (Fig. 5)....................................................15
3.3.3 How to adjust needle and feed motion.............................................16
3.4 Loop stroke...................................................................................................16
3.4.1 Setting the loop stroke .....................................................................16
3.5 Looper ..........................................................................................................17
3.5.1 Exchanging the looper (Fig. 6).........................................................17
3.5.2 How to set the looper shaft ..............................................................18
3.5.3 How to set looper connecting rod (Fig. 8)........................................18
3.5.4 How to mount front bearing block (Fig. 9)........................................19
3.5.5 How to mount rear bearing block.....................................................21
3.5.6 How to set the looper motion (Fig. 10).............................................22
3.5.7 How to set the looper in its front position to the rear feed cup.........23
3.5.8 Adjustment of curves (Fig. 13).........................................................23
3.6 Feed cup.......................................................................................................25
3.6.1 Removing the feed cup (Fig. 14, Fig. 15 and Fig. 16)......................25
3.6.2 Remounting the feed cup (Fig. 17)...................................................26
3.6.2.1 Chain tension...................................................................27
3.6.2.2 Mounting of pneumatically controlled shaft......................28
3.6.2.3 Front cup assembly..........................................................29
3.6.3 Height adjustment of feed cups .......................................................29
218.05.10

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3.7 Front cup ......................................................................................................30
3.7.1 Front cup assembly (Fig. 20)...........................................................31
3.7.2 Front cup support arm (Fig. 21).......................................................31
3.7.2.1 Tension of front cup support arm (Fig. 22).......................32
3.7.2.2 Feed cup opening (Fig. 21)..............................................32
3.7.3 Adjusting the arm plate (Fig. 22)......................................................33
3.7.3.1 Pneumatic pilot release (Fig. 23).....................................33
3.8 Feed dog ......................................................................................................35
3.8.1 Differential adjustment .....................................................................35
3.9 Pneumatic lifting...........................................................................................38
3.9.1 One-way restrictor............................................................................38
3.10 Thread lifting mechanism at needle bar head ..............................................38
3.11 How to adjust stitch regulating bolt (Fig. 28).................................................39
3.12 Setting and mounting instructions for STROBEL gathering device (Fig. 29)40

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Appendix
Circuit diagrams
Mains connection, sewing machine lamp of the sewing machine:
258.00.27 Mains connection plan cl. gen.
(DC1500/DC1550 with/without sewing machine lamp gen.)
258.00.27 Mains facility connection plan cl. gen.
(DC1500/DC1550 with/without sewing machine lamp gen.)
Connecting the sewing machine:
258.21.58 Electrical connection plan cl. VTD410EV from version 1
(DC1550-AB321A)
259.00.55 Pneumatic circuit diagram Cl. VTD410EV
259.10.55 Pneumatic construction circuit diagram Cl. VTD410EV
Subject to change without prior notice

4 MA_VTD410EV_A2_181015_en

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1 Every person in charge of setting up, operating, servicing and repairing the
machine must first read and understand the operating instructions and
particularly the safety instructions before starting up the machine.
General notes on safety
Failure to comply with the following safety instructions can lead to bodily
injury or damage to the machine.
1. The machine must only be operated by persons familiar with the relevant
operating instructions and who have been instructed accordingly.
2. Before commissioning also read the notes on safety and the operating
instructions of the sewing drive manufacturer.
3. Only use the machine in the intended manner and never without the
provided guards. Always observe the pertinent safety regulations.
4. Switch off the main switch or pull the power plug for threading, changing
the reels, exchanging sewing tools such as needle, gripper, needle plate,
transport devices, possibly cutter and cutting block, for cleaning and when
leaving the workplace as well as for maintenance.
5. General maintenance tasks may be carried out only by properly trained
persons in accordance with the operating instructions.
6. Repair work, retrofitting and maintenance may be carried out only by
technicians or specially trained personnel.
7. When servicing or repairing pneumatic equipment, the machine must be
disconnected from the pneumatic supply. Exceptions are only allowed for
adjustment work and tests of functionality performed by specially trained
technicians.
8. Only specially qualified technicians may work on the electrical equipment.
9. It is forbidden to work on electrically live components! Exemptions are
covered by the EN50110 (DIN VDE0105) regulations.
10. Any retrofitting or alterations to the machine may only be performed under
strict compliance with all pertinent safety regulations.
11. Only use our approved spare parts when servicing and/or repairing the
machine.
12. It is forbidden to operate the sewing head until it is determined that the
entire sewing unit complies with EU provisions.
13. It is essential that you observe and follow these instructions as well as the
generally valid safety regulations.

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14. Warning instructions given in the operating instructions that pertain to
especially dangerous parts of the machine must be indicated at these
positions using a safety symbol.
Warning instructions given in the operating instructions that pertain to
special injury hazards for operating personnel or technicians must be
indicated at these positions using a safety symbol.

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2 In addition to the operating instructions distributed with each machine, this
manual is intended to be some help for dismantling, assembling, setting,
converting and repairing the single and two thread overseam machines.
General
2.1 Any person involved in the installation, operation, maintenance and repair of
the machine must have read and understood the operating instructions and
mainly the safety instructions before starting the machine.
Operating instructions
2.2
The operating side of the machine is the basis for descriptions referring to
sides. The class identification (type) as well as serial and model number (after
the dash) is located below the left hand wheel.
Class identification, serial number and orientation of the
machine
2.3 High capacity insoling machine for attaching the insole to uppers made of
Kevlar, leather and textile materials up to a total thickness of 11 mm, with
differential feed for gathering low extra fullness at the ball part and with shaft
coupling for the front cup drive.
Range of application and intended use

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2.4
Recommended rated speed 1500 min-1
Technical data
Motor power 600 W
Toothed belt pulley/machine Z = 38
Toothed belt profile HTD 5M-9
Stitch length 3 – 8 mm
Kind of stitch single thread overseam
Stitch type 501
Needle system GROZ-BECKERT 134
Needle size 160
Thread polyester continuous filament
Thread size 30
Kind of feed rear and front cup drive
Pneumatic connection 10 bar
Working pressure 5 – 6 bar
Air consumption – average value depending on the equipement
Required space 0.7 x 1.06 m
Noise:
Average noise level at a speed of
n = 1500 min-1: LpAm 77 dB (A)
Noise test according to DIN 45635-48-1 KL3

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2.5
Cl. 410-1EVK
Brief setting instructions
Needle type 134
Needle size 120 – 180
Stitch length
A
3 - 8
Stroke of loop
B
6
Needle point front measured from cup
edge C 25,6
Needle stop at needle bar until cup edge D 13,8
Stroke of needle bar eccentric E 38
Looper movement to the right from
needle center to looper point F 5,5
Looper movement to the left
G
11
Looper front position measured from
cup edge H 13,5
Looper rear position
J
6,5
Looper movement
K
10,5
Looper height inclusive shaft
L
41,5
The clearance between the feed cups amount 14 mm.

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3 Hints for repair and settings
VORSICHT! Verletzungsgefahr!
Vor Wartungs- und Reparaturarbeiten Sicherheitshinweise
unter Punkt 1 und die Betriebsanleitung beachten. Bei
deren Nichtbeachtung können schwerwiegende
körperliche Schädigungen hervorgerufen werden.
3.1 Press in bearing bolt (1) so that it’s stopping face projects still 2 ±0.1 ( Pre-assembly Fig. 1).
Fig. 1

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3.2
3.2.1
Main shaft assembly
Before dismantling the main shaft we recommend to mark all parts on the shaft
in a straight line by means of a ruler, respectively to note down all screw
positions. If necessary, the measures of front and rear bearing block should be
taken by means of a slide gauge from the edge of the machine column and
should be noted down (measure a + b). This means a lot of time saving when
assembling and setting the machine (
Removing the main shaft
Fig. 2).
Fig. 2

12 MA_VTD410EV_A2_181015_en
(Only) then loosen the screws of the parts on the shaft, remove the right hand
wheel and push the shaft towards the left side by means of a pulling-off device
without displacing the ball bearings.
Before dismantling the main shaft it is useful to pull the cup support arm
towards the front to obtain better access to the set collar at the main shaft and
to the toothed wheel at the oil pump. Dismantling see point “3.6.1 “Removing
the feed cup (Fig. 14, Fig. 15 and Fig. 16)”.
ATTENTION: Take care of O-rings when assembling the shaft!
Fig. 3
3.2.2 When assembling the main shaft please observe that both O-rings are not
damaged by introducing them into the drill holes of the ball bearings, to
guarantee a good oil sealing.
Remounting the main shaft
After mounting all parts in the correct way, you may start Assembly of stitch
regulating eccentric.

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3.2.3 The left hand wheel with the stitch regulation eccentric need not be removed.
However, it is very important to ensure that the located on both sides of the
adjustment cam bolts (A) (1) (2) away. (
Assembly of stitch regulating eccentric
Fig. 2 and Fig. 3).
ATTENTION! Mark correct position of guide disc (3) and adjusting
eccentric (1)!
Fit the left hand wheel onto the shaft so that the point of the first screw in sense
of rotation fits into the drill hole on the left of the shaft and points upwards.
Turn guide disc (3) so that you can easily slide down regulating eccentric (1).
Screw the first screw (2) into the regulating eccentric but ensure that regulating
bolt (4) can still be freely turned in the shaft. Then turn handwheel with shaft by
180 degrees. Screw the second screw (2) into the regulating eccentric right to
the stop. Fasten guide disc (3) on the shaft (Fig. 3). Push the shaft to the left up
to the ball bearing and fasten it. The shaft is fix now. Let stitch regulating
eccentric level out and tighten it
Push two lubricated springs (1) and two bolts (2) into the drill hole of the hand
wheel (Fig. 4).
Screw regulating knob (3) onto regulating bolt (4) and press it down until
springs (1) are urged, tighten knob. (Fig. 4)
The knob must be free from large to small random.

14 MA_VTD410EV_A2_181015_en
Fig. 4

15 MA_VTD410EV_A2_181015_en
3.3
3.3.1
Needle bar
Needle adjustment
ATTENTION!
Switch off Machine electrically!
Setting values for the needle bar please see chart “setting values”, point “2.5
Brief setting instructions/C”.
3.3.2 Needle height adjustment (Fig. 5)
ATTENTION!
Switch off Machine electrically!
The special design allows that the needle can be adjusted in height which is
very suitable when using different needle sizes. By turning eccentric (1) at the
front side of the needle bar head the needle can be adjusted in height. Make
sure that any needle passes the feed cup with a distance of approx.
0.1 mm.
First loosen screw (2) of the needle setting plate (3) respectively, adjust the
needle in height, and retighten screw (2).
Fig. 5

16 MA_VTD410EV_A2_181015_en
3.3.3 If the machine is set to produce the longest stitch (see chart), the feed motion
stops when the point of the needle is placed ca. 4 mm within the cup edge
before penetrating the fabric.
How to adjust needle and feed motion
Transportation is beginning when the needle leaves the material and the needle
tip with the nose is in line.
Needle- and feed motion are adjusted at needle bar eccentric (E) (Fig. 2).
Please observe utmost front needle position (chart). When adjusting the needle
bar, make sure that the needle clamp device at the needle bar head stands
exactly rectangular to the rear feed cup.
3.4
3.4.1
Loop stroke
Setting the loop stroke
ACHTUNG!
Maschine elektrisch abschalten!
Each machine requires a certain stroke of loop B (see chart), which is regulated
by turning the control cam and the looper eccentric measured from the needle's
front dead point to the point where the looper stands above the centre of the
needle.
To obtain a large stroke of loop - turn cam and looper eccentric opposite
to the machine's direction of sewing,
To reduce the stroke of loop - turn cam and looper eccentric in
direction of sewing.
Then the looper takes up the loop and puts it backwards over the sewing
material (as straight as possible).