How to choose heavy
duty automatic pattern sewing machine for slings and harnesses (II)
“Reinforcement stitch” (by bar tacking or
pattern tacking) sewing technology is necessary to obtain extra safety and
durability in the manufacturing of safety protection equipment for people and
property, made of Nylon, Polyester, Polypropylene, Webbing, Kevlar, Glass
fiber, Vinyl, Leather and Canvas. If you are to bring production back in-house,
for saving cost and improve quality, you need to have a specialized industrial
sewing machine.
In today's ever widening world of heavy
duty computerized sewing machines, how can a potential customer protect their
interests and make a wise investment in a computerized sewing solution? How can
any potential customer of automatic sewing machines know that they will be
getting a machine suited for the job task they are trying to accomplish?
Enter Hightex --- a corporation founded on the principle of providing customized sewing automation for all phases of the heavy weight sewn products industry.
Other companies that manufacture sewing machines do exactly that -- they assemble components and test for correct operation, then ship the machine to the end user, unprogrammed, untested, without the proper jigging and fixturing necessary to complete the sewing projects of their customers.
So the customers must then hire an engineer to program their patterns into the machine, hire fabrication shops to build the required fixtures to hold the material, test the machine on a pre-production level, and then train employees and personnel to operate the machine. Such projects of a monumental undertaking require thousands of dollars, and in some cases tens of thousands of dollars to accomplish.
Enter Hightex --- a corporation founded on the principle of providing customized sewing automation for all phases of the heavy weight sewn products industry.
Other companies that manufacture sewing machines do exactly that -- they assemble components and test for correct operation, then ship the machine to the end user, unprogrammed, untested, without the proper jigging and fixturing necessary to complete the sewing projects of their customers.
So the customers must then hire an engineer to program their patterns into the machine, hire fabrication shops to build the required fixtures to hold the material, test the machine on a pre-production level, and then train employees and personnel to operate the machine. Such projects of a monumental undertaking require thousands of dollars, and in some cases tens of thousands of dollars to accomplish.
The first advantage of Hightex automatic industrial sewing machines is the customization.
We realize that customized sewing
solution is the most suitable product for the highest possible productivity and
quality. Our sale engineers will make clear your detailed sewing requirement,
select the right machine for your application. Then our field engineers will
build all the necessary clamping, jigging and fixturing to accomplish the
sewing task, configuring these sewing equipment properly for customer sewing
requirements.
The second advantage of Hightex sewing automation equipment is “Ready-to-Operate” (customers can use the machines immediately when they receive).
All HIGHTEX heavy duty automatic pattern
sewing machines and bar tacking machines will be thoroughly tested and gone
over by Mingyuan Industrial Sewing Application Center.
This includes testing and checking all
pneumatic, electrical, and computer systems for proper operation, programming
the machine with all patterns supplied by the customers, and then testing the
machine on samples that match exact customer specifications.
These operations save the end user many
thousands of dollars in extra expense, eliminating the need for outsourcing the
work required to get the machine in operating condition.
The third advantage of Hightex is the
Spare Parts Package.
At Hightex, we realize how critical it is
to keep your automation running. Let's face it, equipment breaks and machines
malfunction. The key objective in a manufacturing environment is to minimize
unplanned downtime. This package provides the necessary parts for the
first 6-7 years of operation.
You can purchase the spare parts package
together with machine, then no need to order any parts during this period.
Now let us help you select a right“Ready-to-Operate” Sewing Automation Equipment for
your project:
1, Thickness of materials
Sewing thickness is the first point you need to consider
when select sewing machine. It determined by height of presser foot lift, hook
type, needle bar stroke, needle penetration force and thread tension, etc. In the
productions of normal lifting slings, cargo
lashing straps (Ratchet Tie Down) and safety harness for work at height,
we recommend below sewing capacity:
72600PLK: max sewing thickness 10.5mm, ideal for 2-3 ply slings with
each of 3.5mm
7273PLK: max sewing thickness 14mm, ideal for 2-4 ply slings with each
of 3.5mm
7273CNC: max sewing thickness 14mm, ideal for 2-4 ply slings with each
of 3.5mm
71008: max sewing thickness 17.5mm, ideal for 2-5 ply slings with each
of 3.5mm
72008: max sewing thickness 17.5mm, ideal for 2-5 ply slings with each
of 3.5mm
72008HS: max sewing thickness 20mm, ideal for 2-5 ply slings with each
of 4mm
GLK911: max sewing thickness 20mm, ideal for 2-5 ply slings with each of
4mm
75008: max sewing thickness 17.5mm, ideal for 2-5 ply slings with each
of 3.5mm
733PLC: max sewing thickness 28mm, ideal for 6-8 ply slings with each of
3.5mm
2, Size of sewing area
The maximum working area of pattern sewing
machine determines the maximum sewing area you can obtain. You should double
check the maximum reinforced stitching area you need, both length (X) and width
(Y) must be within range of machine’s working area.
Some people intend to purchase one large area
programmable pattern sewing machine for stitching both small size and large
size products, it is really NOT a good idea. Small area programmable pattern sewing
machine is better for small area reinforcement stitch (like seat belts and
harnesses). If you are to sew small item with large area programmable pattern
sewing machine, you might compromise on production efficiency and seam
quality.
If you expect to sew many small size items
(such tie down straps <also called lashing straps>) together at one time
with large field automatic pattern sewing machine, to obtain highest productivity,
a custom made sewing automation is possible.
Below list the working area of
each heavy duty electronic controlled pattern sewing machine:
For large size sewing product, it is
almost necessary to have a large field programmable pattern sewing machine. We are
ready to custom made sewing automation for your projects with large sew area
and extra large sewing area. Custom sewing applications included Aircraft Arrestor Tapes (tapes for aircraft arrester gear),
webbing cargo nets (cargo Netting and safety nets), military gear, bulletproof
vest carrier, body armor, fall protection equipment, heavy duty lifting slings
for boats and other offshore applications, tents and canopies, heavy duty
equestrian harnesses, Tatami mats, heavy industrial slings and other custom
heavy duty sewing applications.
71008
Small size automatic pattern sewing machine: 130mmX60mm
71008S
Small size automatic pattern sewing machine: 130mmX110mm
72008 Medium size programmable pattern sewing machine: 300mmX200mm
72008 Medium size programmable pattern sewing machine: 300mmX200mm
75008
Large size programmable pattern sewing machine: 500mmX200mm
7273PLK
Small area automatic pattern sewing machine: 120mmX50mm
7273CNC
Medium area automatic pattern sewing machine: 250mmX160mm
7273CNC/X
Wide area automatic pattern sewing machine: 300mmX200mm
733PLC
Medium area automatic pattern sewing machine: 250mmX160mm
72600PLK
Medium area automatic pattern sewing machine: 250mmX160mm
72600PLK2
Wide area automatic pattern sewing machine: 300mmX200mm
72600PLC
Large area programmable pattern sewing machine: 400mmX800mm
GLK911-8020
Large field programmable pattern sewing machine: 800mmX228mm
GLK911-10030 Extra large are automated pattern sewing machine: 1000mmX300mm
GLK911-10050 Extra large area programmable pattern sewing machine: 1000mmX500mm
GLK911-10050 Extra large area programmable pattern sewing machine: 1000mmX500mm
GLK911-20080
Extra large field programmable pattern sewing machine: 2000mmX800mm
 |
| Reinforced stitching area |
3, Construction of sewn products
In the production of lifting slings and
lashing straps (Ratchet Tie Down), reinforcement stitching area usually close
to both edges of slings & straps, for obtaining ultimate seam strength. But
when manufacture life vest, fall protection, safety equipment, safety harnesses,
bulletproof vest carrier, body armor, Aircraft
Arrestor Tapes (tapes for aircraft arrester gear), upholstery, and parachute harness etc, you
need to consider the rest material besides reinforced area. The machine must
have enough clearance room for passing the rest materials.
Especially when sewing parachute harness, there is almost a necessity to
have customized clamps: on the buckles where there is zero distance between the
sewing pattern and the clamp because they require a tight connection between
the webbing and buckle.
 |
| Reinforced stitching backpack harness (center) |
Safety
is top priority for slings, straps and harnesses for protecting people and
property, heavier sewing threads are always used in the production. The hook
type of pattern sewing machine determines the maximum sewing thread size that
the machine can process. HIGHTEX series extra heavy duty automatic pattern
tacking machines equipped with 3 type hooks:
Singer 132 type large rotary hook (HSH-32/KRT-132)
72600PLK,
72600PLC
Maximum.
sewing thread size 10, V277, T-270, 840dx3
Recommend
needle size: Schmetz DDx1 (328) Nm180/25
Adler 204 type large Barrel shuttle hook (KSP204N/HAD204)
Application:
71008, 72008, 72008, 7273CNC, 7273PLK
Maximum.
sewing thread size 7, V415, V462, T-500, 1500dx3
Recommend
needle size: Schmetz 794(DY x 3) Nm 250/27
Singer 733 type Long beak oscillating shuttle hook (HSH-7-3)
Application:
733PLC, GLK911
Maximum.
sewing thread size 4, V693, T-700, 2000dx4
Recommend
needle size: Schmetz 1000H Nm 300
Also
the thread size must match up needle size. If you produce webbing slings and
straps with different size of threads, it is better purchase different size of
needles together with machine.
 |
| Large hook and bobbin capacity |
In
view of same material and thickness, the linear density and stitch density have
great effect on stiffness of the slings & straps.
If
you are to sew over 15mm thick webbing slings with extra high linear density,
the needle penetration force of sewing machine must be taken into
consideration.
Seam
strength is determined by: 1) thread strength (thread type and size); 2)stitch count (number of stitches per inch); 3)weakening material from piercing with needle (type & weight of the Fabric); 4)pattern of sewing; 5) stitch balance (thread tensioning). If the
stitch density (stitch length and line distance) sets too high, the synthetic fiber slings will become extremely hard and stiff, the thread will tend to
break during sewing operation and the machine may be overload.
In this
case you may need an extremely powerful pattern sewing machine with additional needle penetration force and real
needle cooler (like Hightex #72008HS watch video at http://youtu.be/yUYPMlLRYCs).
 |
| Extra stiff synthetic sling due to its high stitch density |
Hardware including Ratchet, shackles,
thimbles, choker triangles and others can be sewn into the slings for varying
applications. If you need to attach hardware onto slings & straps, the
pictures, detailed dimensions and weight of your metal parts should be provided
for recommending right machine. A custom made sewing machine (sewing
automation) may be required to obtain maximum efficiency and excellent stitch
formation.
 |
| Sewing ratchet lashing strap with hardware |
7, Electronic Control System
HIGHTEX
series heavy duty automated pattern sewing machines carry two types Electronic
Control Systems:
SMD
type electronic controlling system: the basic and simple automation, easy to
use.
Application:
71008/72008 and 75008 series.
Recommend
to lean manufacturing environment or professional manufacturer work no more
than 8 hours per day
SC44X(PLK)
type electronic controlling system: the sophisticated technology for extra
heavy weight sewing applications
Application:
7273CNC, 7273PLK, 72600PLK and 733PLC series
Recommend
to mass manufacturing environments
8, Efficiency
Large
rotary hook can run fast, but cannot sew extra heavy material with extra thick
thread. Large Barrel shuttle hook is specialist for extremely thick thread and
super heavy weight materials, but the sewing speed is slow. If you specialize in
manufacturing cargo lashing strap & ratchet tie down (2-3 slings
construction) with sewing thread no thicker than metric size 10, V277, T-270,
840dx3. You can consider 72600PLK high speed automatic pattern tacking machine.
And if you use heavier sewing threads, BARREL Shuttle pattern sewing machine is
the only choice.
Due to the continuously growing demands of
maximum effectivity in modern production, the sewing technology is confronted
with new challenges. We simultaneously develop highly efficient sewing
automation for reducing operator involvement. In many cases it is possible to
run two or three automated sewing units with only one person, great for saving
labor cost. For example 7273CNC/X and GLK911 series heavy duty extra large area
programmable pattern sewing machine.
In the past years, we have developed full range of
specialized and high efficiency programmable electronic controlled pattern
sewing machines (with small area, large area and extra-large sewing are) to
meet security required in this field. These heavy duty CNC sewing machines are
particularly capable of assembling extra heavy weight materials using very
thick thread. Particular for the production of synthetic slings, straps, belts,
ropes, harnesses and webbing for serving high-end industrial markets such as
cargo lifting and lashing, safety & protection, fire and rescue, marine,
automotive, aviation, military, custom-made lifting slings for offshore, marine
and industrial applications.
Selection
of automatic bar tacking machines to make rope sewn eye termination:
http://sewingtechnology.blogspot.com/2014/07/how-to-choose-heavy-duty-bartacking.html
Selection of plain heavy
duty webbing sewing machine for lifting slings and lashing straps: http://sewingtechnology.blogspot.com/2014/07/how-to-choose-industrial-sewing-machine.html
Below
featured videos might be able to help you understand HIGHTEX heavy duty programmable
pattern sewing machines better:
72600KSL-6V
Extra large field programmable pattern sewing machine
GLK911
Extra large area programmable pattern sewing machine
72008
Heavy duty pattern sewer with automatic thread heat trimmer
7273CNC/X
Custom made high efficiency pattern sewing machine
733PLC
Heaviest electronic controlled pattern sewing machine
72600PLK
Heavy duty high speed automatic pattern sewing machine
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