Principle of Multiphase Warp-Wave Air-Jet Loom
Development of Multiphase Warp-Wave Air-Jet Loom
Objectives:
A breakthrough in weaving machine development to overcome the 2000m/min filling insertion barrier which seems to be the limit for single phase weaving machines is needed. It is the objective of this research to provide this breakthrough which can be accomplished by the combination of a high speed shedding mechanism, warp-wave multiphase system and air-jet tilling insertion.
Summary:
After the prototype machine was installed the electronic control box was found to need some repairs. These repairs have been completed and the machine was operated at slow speed to study the various motions. A variable speed drive was purchased and installed. This drive will allow a wide range of operating speed up to 600 ppm.
The following measurements were made:
Shed crossing opposition | 1511 |
Full shed opening range | 170-210 |
Shed dwell | 40 |
Retainers enter shed | 120 |
Retainers rotation start | 190 |
Retainers rotation end (complete | 26311 |
Tube travel start | 26311 |
Tube travel ends | 1063 |
Time available for filling insertion | 800 |
Retainers rotation in opposite direction | 3431 |
Rotation completed | 50 |
Retainers start leveling shed | 110 |
Sweep reed backward motion start | 205 |
Sweep reed forward motion start | 337 |
Beat-up reed enters warp | 205 |
Beat-up starts | 85 |
Beat-up ends | 160 |
The automatic data acquisition system has been prepared and testing of vital machine parameters will start soon. A new design for the air tube/retainer pieces to reduce their size and a new arrangement for the rotation gears has been completed.
Estimates for the reconstruction of the retainer boxes (ten) has been obtained and an order to the machine shop will be made shortly. Research on the amount of air consumption needed for filling insertion and the potential energy savings compared to conventional air-jet looms is in progress. Plans for the development of 190cm machine have been discussed and are the subject of a proposal submitted earlier to TRP.
Design of a Braiding Machine to Produce Wide, Flat Woven Structure at Significantly Increased Production Rate Principal Investigators:
Objectives:
1. To develop machine design parameters for a braiding machine that will produce traditional wide, woven fabrics.
2. To determine the behavioral properties of a flat woven fabric produced from the bias slitting of a tubular braid.
3. To examine the impact of the proposed new weaving process on fabric manufacturing costs.
1. To develop machine design parameters for a braiding machine that will produce traditional wide, woven fabrics.
2. To determine the behavioral properties of a flat woven fabric produced from the bias slitting of a tubular braid.
3. To examine the impact of the proposed new weaving process on fabric manufacturing costs.
Specific objectives for the ensuing year are:
1. Develop a fully dimensioned design of the new process.
2. Complete a computer simulation of the machine design.
3. Test the behavioral properties of a slitted, tubular braid.
