Main Structure and Secret Features of High Speed Rapier Loom! A high-speed rapier loom is a weft insertion device composed of a flexible or rigid rapier and a rapier head. The rapier head holds the weft yarn and transfers it through the shed for weft insertion. Due to the gripping effect of the rapier during weft insertion, the weft insertion is stable and reliable, and the loom operates smoothly. The high-speed rapier loom has good color selection performance for weft yarn, with up to 16 colors selected, making it easy and convenient to change varieties. The characteristic of high-speed rapier looms is that they have a wide variety of adaptability and can use spinning threads of various raw materials to weave various types of fabrics, making them very suitable for small batch and multi variety fabric production.

　　The high-speed rapier loom is mainly composed of a frame, main transmission system, opening mechanism, weft insertion mechanism, weft beating mechanism, warp delivery mechanism, coiling mechanism, weft supply mechanism, weaving edge mechanism, automatic weft finding mechanism, weft selection mechanism, lubrication system, and control system. The main structure and characteristics of the high-speed rapier loom are as follows:

1. Opening mechanisms include passive multi arm devices, active multi arm devices, cam (tread) opening mechanisms, jacquard opening mechanisms, and other forms. The installation method of the multi arm device is either bottom mounted or top mounted, with an additional number of 20 to 24 frames.

2. The main transmission system of the high-speed rapier weaving machine is generally driven by the main electric motor through an electromagnetic brake clutch to drive various mechanisms. The electromagnetic brake clutch is operated by an electrical control system and can accurately achieve functions such as starting, jogging, positioning, and parking of high-speed rapier looms. Some weaving machines adopt variable speed motors such as switched reluctance motors, variable reluctance motors, brushless DC motors, variable frequency motors, etc. to directly drive various mechanisms.

3. The weft insertion transmission method generally adopts conjugate cam, eccentric connecting rod, spatial crank connecting rod, spatial screw and other methods. The range driven by the sword is adjustable.

4. The weft insertion method is adopted by the high-speed rapier loom model, which adopts double-sided flexible rapier belts and center intersecting weft yarns. Some individuals also adopt rigid rapier center handover. Very few single side sword straps (rods) are directly inserted through the entire shed for weft insertion.

5. Weft yarn supply adopts a single stand bobbin frame and electronic weft storage device to achieve continuous and constant tension unwinding of the weft yarn bobbin.

6. Weft yarn color selection generally adopts electronic weft selectors and microcomputer controls, with an additional 16 colors of weft yarn. There are also those equipped with mechanical weft selectors.

7. The majority of weft beating mechanisms adopt conjugate cam type weft beating mechanisms, while a small number of weaving machines adopt non separate four link or six link weft beating mechanisms.

8. Delivery institutions, adopting mechanical or electronic delivery institutions.

9. The winding mechanism adopts mechanical or electronic winding mechanisms.

10. Weft density adjustment, commonly used range of weft density is 20-1500 weft/10cm. There are two types of mechanical warp delivery mechanisms: mechanical stepless weft density adjuster and using exchange gears to adjust weft density. The weft density of high-speed rapier weaving machines with electronic warp and electronic winding can be adjusted by changing the angle of the electric motor for each weft winding through the operation panel to change the weft density parameters.

11. The weaving edge device generally adopts a yarn twisting edge device, and can also be equipped with folding edge, hot melt edge, and electronic weaving edge mechanisms.

12. Automatic stop device for power outage, electrical contact type.

13. Self stop mode for weft breakage, piezoelectric ceramic electronic sensing type, with weft breakage and double weft control functions.

14. Starting and braking, the high-speed rapier weaving machine adopts an electromagnetic brake clutch. Some weaving machines have started to adopt variable speed motors such as switched reluctance motors, variable reluctance motors, brushless DC motors, variable frequency motors, etc.

15. The control system adopts single-chip microcomputer control system or PLC control system, with various detection and control functions.

16. Sword head and sword belt, there are two types of sword heads: positive and negative, and the sword has two types: flexible sword belt and rigid sword rod. There is now a trend towards small sword heads and flexible narrow sword bands.

17. Lubrication: The main transmission system of the high-speed rapier weaving machine adopts oil bath lubrication or spray lubrication, and some parts adopt manual pumps and grease lubrication.

18. There are three automatic weft finding methods: one is to install a reverse motor on the dobby machine; One type of specially designed weft finding slow motor is equipped with a clutch; There is another type that is directly driven by the main electric motor.

　　19. The selvage spinning thread adopts a single stand small warp or multiple bobbin yarns.

20. Cleaning and vacuuming, a unique vacuum cleaner for high-speed rapier weaving machines, with dual suction on both sides, with cleaning and anti weft shrinkage functions.

21. Rack, wall panel rack, cast iron wall panel, some models adopt steel plate rack.

22. Rolling fabric: High speed rapier looms usually roll fabric inside the machine, and can be equipped with external rolling fabric. Both are constant linear speed rolled fabrics.

23. Edge cutting, two types: mechanical and electronic.

24. Signal processing, multi-color signal indicator lights, indicating signals such as warp stop, weft stop, and wait.