How to weave the grain packing bag smoothly?

If the grain packing bag wants to be woven smoothly, the warp and weft tension must be balanced. It's easy to say but difficult to do. No one or any equipment can balance the tension between warp and weft. It can only be said that the more flat the woven fabric is, the more balanced the warp and weft tension must be. Of course, some people require that the woven cloth be woven smoothly, including equal warp and weft clearance, and no folding and twisting flat wires.

Adjustment of warp tension

The warp tension adjustment mainly includes the warp frame, each wire guide hole through which the flat wire passes, the let off roller and the jump rod.

Warp frame is the birthplace of uneven warp tension, which cannot be ignored. In particular, the rotation resistance moment of the tray shaft of each spindle of the warp frame is the birthplace that directly affects the warp tension. In addition, pay attention to whether the flat wire is wound on the shaft to increase the rotational resistance moment, and whether the edging wire makes the rotational resistance moment unbalanced.

The resistance of flat wire passing through all guide wire holes shall be equal, which requires that the sum of angle and length of each flat wire passing through all guide wire holes shall be balanced and equal as far as possible.

Cross winding of warp threads is not allowed.

It is important to adjust the jump bar. First, each jump bar shall rotate flexibly and shall not be stuck by dust and grease. Several or more jump bars rotate together. If necessary, it is recommended to separate each jump bar with an isolation ring in order to increase the activity capacity.

The tension spring of the jump bar must be effective and the tension is appropriate. It is recommended to clean, check and install the jump bar and the jump bar tension spring again.

Correctly judge the tension and tightness of each warp, and then adjust the tension of the jump rod tension spring at any time to obtain the appropriate tension of each flat wire.

Adjustment of weft tension

The tension of the weft wire is greatly affected by the size of the shaft wire, and the tension adjustment of the weft wire is mainly to adjust the tension of the tension brush tension spring, which is really difficult to adjust evenly. It is suggested to improve this adjustment method, such as increasing the friction tension of the end face.

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