NEW «ZARIF» DOUBLE THREAD CHAIN STITCH TECHNOLOGY

  • Our new «ZARIF» double thread chain stitch technology surpasses in universality of sewing various materials all existing sewing technology.
  • In addition, our new «ZARIF» double thread chain stitch technology significantly expands the area of application of the double thread chain stitch, by replacing lockstitch.
  • As is known, replacement lockstitch on the double thread chain stitch leads not only to increased productivity due to the lack of changer bottom thread bobbin will also increase seam strength.
  • On the basis of our new «ZARIF» double thread chain stitch technology, can be develop various new universal industrial sewing machines and automated sewing systems that have no analogues in the World.
  • In addition, in the World only our new «ZARIF» double thread chain stitch technology, allows to receive special new non-raveling, high breaking strength and highly elastic double thread chain seams.

PRE-PRODUCTION MODEL «ZARIF» DOUBLE THREAD CHAIN STITCH SEWING MACHINE, AN ADVANCED IN 2016 THROUGH A NEW ROTATING LOOPER

The pre-production model «ZARIF» double thread chain stitch sewing machine is made by reconstruction of industrial lockstitch sewing machine 1022 class JSC «Orsha» (Belarus) and works on the basis of our new «ZARIF» double thread chain stitch technology.

WORKING UNITS:

Needle with one long groove

Rotating looper

Pusher of the bottom thread.

Needle with one long groove

Rotating looper

Pusher of the bottom thread.

KINEMATIC SCHEME OF PRE-PRODUCTION MODEL «ZARIF» DOUBLE THREAD CHAIN STITCH SEWING MACHINE, AN ADVANCED IN 2016 THROUGH A NEW ROTATING LOOPER

  1. main shaft;
  2. needle;
  3. rotating looper;
  4. thread guide of the bottom thread;
  5. pusher of the bottom thread;
  6. feed dog;
  7. presser foot;
  8. nut for regulation of pressure of a press foot on a material;
  9. two dick-shaped cam thread take-up of the top thread;
  10. tension device of the top thread;
  11. two dick-shaped cam thread take-up of the bottom thread;
  12. tension device of the bottom thread;
  13. lever for regulation of length of a stitch and reverse feed.

Pre-production model «ZARIF» double thread chain stitch sewing machine works with high noise, as the number of gear drives a lot (2 cylindrical gear drives and 3 conical gear drives).

KINEMATIC SCHEME OF INDUSTRIAL VERSION OF «ZARIF» DOUBLE THREAD CHAIN STITCH SEWING MACHINE WITH A BOTTOM FEED AND A FLAT PLATFORM FOR SERIAL PRODUCTION IN COOPERATION WITH INTERESTED COMPANIES

  • 1-main shaft; 2-bottom shaft;
  • 3-cogged belt drive;
  • 4,5-cylindrical gears drives;
  • 6-rotating looper;
  • 7-thread guide of the bottom thread;
  • 8-two-disk-shaped cam thread tensioner for the bottom thread;
  • 9-vertical shaft of a pusher;
  • 10-pusher of the bottom thread;
  • 11-feed dog;
  • 12-eccentric cam for horizontal moving feed dog;
  • 13-shaft for horizontal moving feed dog;
  • 14-eccentric cam for vertical moving feed dog;
  • 15-shaft for vertical moving feed dog;
  • 16-presser foot;
  • 17-nut for regulation of pressure of a press foot on a material;
  • 18-needle;
  • 19-two-disk-shaped cam thread tensioner for the top thread;
  • 20-tension device of the top thread;
  • 21-tension device of the bottom thread;
  • 22-long groove for giving of the bottom thread;
  • 23-lever for regulation of length of a stitch and reverse feed.

Industrial version of «ZARIF» double thread chain stitch sewing machine with a bottom feed and a flat platform will work with the least noise, so how has one cylindrical gear drive.

EASE OF MAINTENANCE THE NEW «ZARIF» DOUBLE THREAD CHAIN STITCH SEWING MACHINE

  • 1. For sewing quality of different materials with thickness up to 8 mm, sufficient to establish normal tension of threads.
  • 2. For dense join of different materials is sufficient to establish normal tension of threads.
  • 3. For very dense join of different materials need only increase the tension of the top thread.
  • 4. To increase the smoothness of the seam on light materials is sufficient the transition from normal chain seam to elastic chain seam with the help of know-how.
  • 5. To improve the elasticity of the seam on the elastic materials is sufficient the transition from normal chain seam to elastic chain seam with the help of know-how.
  • 6. All working units are easily removed and installed, as they are located at the ends of the shafts.
  • 7. Is not required to increase the stroke of the needle bar for sewing thick materials, as with the needle bar stroke of 32 mm is able to sew the materials thickness up to 8 mm.
  • 8. The height of lifting of a needle from the lowest position to form a loop-overlap of the top thread, for all materials constant, which eliminates the adjustment of the needle bar.
  • 9. The transition from needle Nm.130/21 to needle Nm.60/8 does not require adjustment of looper concerning a needle, since the maximum clearance gap between the nose of the looper and needle is equal 0,5 mm.
  • 10. Can sewing longer without cleaning the mud from under the needle plate, since the rotating looper creates a strong air flow that throws mud away from the stitch formation zone.

NEW TYPES OF STITCHES AND SEAMS OF RECEIVED ON NEW «ZARIF» DOUBLE THREAD CHAIN STITCH SEWING MACHINE

World's first application of a rotating looper allowed us to obtain a new double thread chain stitch type 401, where the loop of the top thread and the loop of the bottom thread are rotated by 180°degrees.

New «ZARIF» double thread chain stitch technology allows obtaining ordinary and special new double thread chain seams.

1. Ordinary new normal and elastic double thread chain seams.

New normal double thread chain seam to dense and very dense join of materials.

New elastic double thread chain seam, to improve the smoothness of the seam on light materials and elasticity of a seam on stretchy materials.

2. Specials new non-raveling, high breaking strength and highly elastic double thread chain seams.

To obtain the specials new double thread chain seams, at high speed sewing, the sewing machine should have electronic control of the feed materials.

Special new non-raveling chain seam, where every normal chain stitch has one thread chain, as bar-tack.

Special new non-raveling, high breaking strength chain seam, where every normal chain stitch has one normal chain stitch with a length of 0,5 mm, as bar-tack.

Special new non-raveling, high breaking strength and highly elastic chain seam, where every elastic chain stitch has one elastic chain stitch with a length of 0,5 mm, as bar-tack.

SPECIFICATIONS OF PRE-PRODUCTION MODEL «ZARIF» DOUBLE THREAD CHAIN STITCH SEWING MACHINE, AN ADVANCED IN 2016 THROUGH A NEW ROTATING LOOPER

Application: For all materials (light, medium, heavy textile materials; knitted; leather; plastic; combination of materials).

Lift of the presser foot: 9 mm.

Platform type: Flat.

Maximum thickness of sewing material: 8 mm.

The maximum speed of sewing: 5000 s.p.m.

Type and number of needles: Needles with one long groove, from Nm.60/8 to Nm.130/21.

Length of a stitch: From 5 мм to 0,5 мм (0 mm stitch length up to 5 stitches).

Type feed material: Bottom feed.

Needle bar stroke: 32 mm.

TECHNOLOGICAL OPPORTUNITIES OF NEW «ZARIF» DOUBLE THREAD CHAIN STITCH TECHNOLOGY (THE INDUSTRIAL REVOLUTIONS IN SEWING)

  • 1. The use of a needle with one long groove for receiving double thread chain stitch.
  • 2. Sewing different materials with thickness up to 8 mm without adjustment of a tension of threads, with a normal tension of threads.
  • 3. Sewing different materials thickness up to 8 mm when the needle bar stroke 32 mm.
  • 4. Sewing without skip stitch with a 100% guarantee.
  • 5. Sewing without breakage of the thread when using sewing threads having no knots and thick places.
  • 6. Dense join of materials using double thread chain stitch with normal tension of threads.
  • 7. Very dense join of materials using double thread chain stitch, by increasing only the top thread tension.
  • 8. The high quality tightening threads in stitch, when the change the thickness and hardness of the material.
  • 9. High reliability of stitch formation without the use of the left and right guards of needle.
  • 10. The increase the maximum clearance gap between nose of the looper and needle to 0,5 mm.
  • 11. Easy transition from normal chain stitch to elastic chain stitch with the help of know-how.
  • 12. The reduction of length double thread chain stitch to 0,5 mm for increasing the reliability of the bartacking end of chain seam from unraveling.
  • 13. Obtaining up to 5 stitches when the stitch length is equal 0 mm.
  • 14. Obtaining specials new non-raveling, high breaking strength and highly elastic double thread chain seams, using a sewing machine electronic control the feed of material.

HIGH OPERATING LIFE AND HIGH RELIABILITY IN SEWING THE NEW «ZARIF» DOUBLE THREAD CHAIN STITCH SEWING MACHINE

  • 1. Very simple mechanical design of the sewing machine, thus increasing the lifetime of the sewing machine and reliability in sewing.
  • 2. All working units are of very simple construction, which contributes to increased service life of the sewing machine and reliability in sewing.
  • 3. The needle at movement downwards does not encounter with the looper, which contributes to increased service life of the needle and looper.
  • 4. The use of a short needle with one long groove increases the rigidity of the needle to bending, which reduces the probability of encounter of the needle with the needle plate.
  • 5. High reliability of stitch formation is achieved by means of know-how, without the use of the left and right gauges of needle that eliminates the encounter of the needle with guards.
  • 6. High reliability of stitch formation, even with the gap of 0.5 mm between the nose of the looper and needle is achieved by means of know-how, without the use of guards of the needle.
  • 7. Smooth tightening of the threads during stitch formation contributes to the elimination of breakage of the threads during the sewing process, when use sewing threads having no knots and thick places.
  • 8. Regardless of the density and stiffness of stitched material ensures the high quality tightening threads in stitch with the help of know-how, without adjustment of a tension of threads.