Lockstitch šivaći strojevi are highly versatile general-purpose sewing machines, encompassing those that meet the following three criteria:

1) The stitch type is the 301 lockstitch;

2) The šiva igla potezi okomito in a ravna linija;

3) Fabric feeding is accomplished by a feed dog (or a combination feed dog system).

 

 

◆Working Principle of the Igla Mehanizam

The igla mehanizam pripada to the category of planar slider-crank mechanisms. As the main shaft rotates, it drives the igla bar crank, which, via the igla bar bar connecting link, imparts a reciprocating linear motion to the igla bar fixed on the slider. This enables the the straight igla secured on the igla bar to perform the šivanje akcija of piercing the tkanina.

Funkcija ◆Funkcija

The funkcija the the igla mehanizam in an industrial lockstitch šivaće stroj je to nosi te nit kroz the tkanina ti ti te te gibanje, forming a thread loop. In precise coordination with the hook, take-up poluga, Feed mehanizmi, it allows the gornji i donje threads to interlock and stezanje, kreiranje The 301 lockstitch.

 

Funkcija ◆ Funkcija

To enable the shuttle point to pass through the igla thread loop at a specific time, enlarging and extending it, allowing it to encircle the shuttle body and accomplish the interlocking of the the upper and lower threads, preparing for the take-up lever to tezanje teh stitch.

◆ Motion Coordination of Shuttle Body and Bobbin Case

The bobbin case containing the the lower thread is inserted into the shuttle body. Both the shuttle body and bobbin case are mounted on the the hook shaft in the hook bed, with the shuttle body remaining stacionarn while the bobbin case rotates around the hook shaft as the lower thread is out. A spring-loaded tension mechanism on the shuttle body applies tension to the lower thread as it is pulled out, directly impacting šivanje kvaliteta. Ova napetost može biti podešena via via vijak na napetost opruga.

◆ Work Principle of The Rotary Hook

1) Spajanje

2) Spreading

(1) As the shuttle driver rotira, the gornji thread slajds along the shuttle point into the groove at its base;

(2) Kontinuirano rotacija uzroci the short thread to be pushed forward while the long thread is caught by the thread guide and pulled backward, twisting the loop 180 degrees;

(3) The shuttle driver continues to pull and elongate the gornja thread loop, which wraps around the shuttle body and bobbin case, pass through the gap between the positioning hook and the hook bed groove. During this process, the upper thread loop encircles the lower thread.

3) Puštanje

The shuttle heel guides the upper thread loop around the hook bed. At this point, the take-up lever rapidly rises, causing the upper thread loop to swiftly disengage from the shuttle heel and the edge of the rotating shuttle driver, finally passing through the gap between the rotary hook and positioning hook.

4) Ultimately, in coordination with the take-up lever and thread take-up mechanism, the interlocked upper and lower threads are tightened within the fabric.

Funkcija ◆ Funkcija

During each šiva ciklus in the stitch formation process, the take-up lever mechanism controls the supply and recovery of an appropriate amount of upper thread, causing the interlocked upper and lower threads to tezanje withen within the the fabric, and then draws out the the upper thread required for the next stitch from the thread reserve.

◆ Načelo

L take-up poluga mehanizam a planar slider-crank mehanizam.

Funkcija ◆ Funkcija

During the stitch formation process, the feed mechanism koordinate its motion with the igla, kuka, and take-up poluga mehanizmi, moving the fabric forward or backward by an appropriate amount at the proper time.

Ovo je postignuto kroz the cooperation the the feed dog and presser foot. The presser foot creates friction between the fabric layers and the feed dog, allowing the fabric to be pushed forward by the feed dog's motion.

 

If you need to buy Lockstitch šivaći strojevi, you can choose DAPSEW. The brand we cooperate with is the Singer and Juki brand.

You Can Contact:

E-pošta: evan@dapsew.com

WhatsApp: +8613186027908