Main structure and characteristics
The air-jet loom mainly consists of a frame, a transmission and braking system, a shedding mechanism, a weft insertion mechanism, a beating-up mechanism, a let-off mechanism, a take-up mechanism, an edge-twisting mechanism, a scissor mechanism, an edge yarn catching device, a centralized oil supply and an automatic Control system and other components. The main structural and technical characteristics of the air-jet loom: 1. Weft insertion method: Under the action of the main and auxiliary nozzles and special-shaped reeds, the high-speed airflow generated by the release of compressed air is used to pull the weft yarn through the fabric fell to complete the weft insertion. 2. Opening methods include crank opening, cam opening, dobby opening and jacquard opening, which can be selected according to the fabric weave. The general conventional configuration is a cam opening. 3. There are three types of beat-up methods: four-link beat-up, six-link beat-up and conjugate cam beat-up. 4. The let-off mechanism mainly adopts electronic semi-active and semi-passive continuous let-off and mechanical semi-active and semi-passive continuous let-off. 5. The coiling mechanism has mechanical continuous coiling and electric coiling. Domestic air-jet looms are generally equipped with mechanical continuous take-up. 6. The cloth is usually rolled inside the machine, and it can be optionally rolled out of the machine. 7. Rack Japanese models use box-type wall panel racks, while European models mostly use panel-type wall panel racks. Both types of frames exist in domestic air-jet looms. 8. Transmission and braking: Reluctance motor direct transmission and braking, with stepless speed regulation; super-start motor transmission, electromagnetic brake braking; general motor and flywheel and clutch transmission, electromagnetic brake braking. 9. Lubrication: The main transmission part adopts oil bath lubrication, and other parts adopt oil cup lubrication or centralized oil supply. 10. Yarn supply: There is a floor-standing yarn supply rack outside the machine, which can be equipped with 2 bobbins, 4 bobbins, 6 bobbins and 8 bobbins. 11. Length measurement and weft storage: The electric drum stores the weft, and the drum diameter and yarn stop pin are fixed in length. 12. The hemming mechanism includes planetary hemming, leno hemming, electronic hemming, fold-in hemming and hot-melt hemming. Choose according to fabric requirements. 13. There are two types of selvedge: raw edge and finished edge. Depends on the institution chosen. 14. Ring temple support. Choose the number of loops and needle size according to the fabric. 15. There are mechanical scissors and electronic scissors for weft cutting. 16. Weft finder Fully electric weft finder. Divided into reflective and transmissive types. 17. The weft stop device detects the flight status of the weft yarn by the weft detector, and infers whether the flight is normal or not through the weft detector control unit and issues an instruction to stop or continue operation. 18. The stop device includes an electrical contact rod stop rack type stop device, a far-infrared detection stop device and a comb-type stop device. At present, the stop-and-go style is mostly used, and 4, 6 or 8 rows can be used depending on the secret. 19. Display keyboard display (parameter setting, loom status monitoring, self-diagnosis of faults); multi-color indicator lights indicate warp stop, weft stop, waiting and other information. 20. Accessory devices: auxiliary main spray, drafting spray, weft braking device, etc. 21. The control system uses a microcomputer as the control core to control weft insertion, weft selection, weft storage, warp let-off and loom movements respectively, and set the weaving process parameters (warp tension, color, solenoid valve opening and closing time, etc.) on the keyboard. . Each control unit controls the corresponding action. There is an operation button board on the left, right or in the middle of the front of the loom to facilitate the operator’s operation.
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