Does the material of the warp stop stand affect the adjustment of the warp position
The material of the warp stop frame has an indirect but crucial impact on the adjustment of warp yarn position, which is reflected in three dimensions: structural stability, accuracy retention, and surface characteristics of the material. These characteristics directly determine the correctness of the adjustment operation, the stability of the adjusted position, and the safety of warp yarn operati
The material of the warp stop frame has an indirect but crucial impact on the adjustment of warp yarn position, which is reflected in three dimensions: structural stability, accuracy retention, and surface characteristics of the material. These characteristics directly determine the correctness of the adjustment operation, the stability of the adjusted position, and the safety of warp yarn operation. The specific impacts are as follows:
1. Structural stability: determines whether the position can be maintained after adjustment
The core goal of adjusting the warp position is to keep the warp stable in the set position for a long time (without offset or shaking), and the rigidity and deformation resistance of the material are key:
Excellent materials (such as cast steel, high-strength aluminum alloy, engineering plastic alloy): strong rigidity, good resistance to vibration and load deformation. After adjusting the horizontal, vertical, or height positions, the set size and angle can be maintained for a long time (such as not causing lateral slide rail displacement due to loom vibration, or slight bending of the frame due to the tension of the warp stop/warp yarn), avoiding indirect displacement of the warp yarn due to frame deformation.
Poor quality materials (such as ordinary cast iron, low strength plastic): Poor rigidity, prone to "rebound after adjustment" or long-term deformation (such as lateral movement jamming caused by sliding rail wear, and bending of the bottom support feet of the frame seat under pressure). Even if the initial adjustment is correct, the warp position may shift due to material deformation in the future, requiring repeated adjustments and affecting weaving efficiency.
2. Accuracy retention: determines whether the adjustment operation can be correctly performed
The adjustment of warp position requires high precision (such as controlling the horizontal alignment error within 1-2mm to avoid warp yarn entering the reed teeth), and the machining accuracy, adaptability, and wear resistance of the material will directly affect the adjustment accuracy:
High density, low wear materials (such as chrome plated cast steel and hard anodized aluminum alloy): The surface is smooth and has high hardness, with small clearance and slow wear when matched with adjustment components (such as horizontal rails, vertical adjustment screws, and height supports). When adjusting, the frame can move smoothly along the slide rail (without jamming or virtual position), and the scale value of the adjusting screw/support foot can be correctly matched with the actual displacement (such as turning the screw 1 turn corresponds to 0.5mm longitudinal movement, with minimal error), ensuring that the warp position is adjusted to the preset accuracy.
Low precision, high wear materials (such as untreated ordinary steel, easily aging plastics): rough or easily worn surface, large clearance between adjusted components (such as burrs on the slide rail causing lateral movement to be stuck, and screw thread wear causing "idle without displacement"). It is difficult to control the movement amount correctly during adjustment, which may result in a deviation of "wanting to adjust 1mm but moving 3mm", or slow displacement due to component wear after adjustment, affecting the warp alignment effect.
3. Surface characteristics: determine whether the adjusted warp yarn runs safely
After adjusting the position of the warp yarn, the warp yarn needs to be in close contact with the edge of the warp stop frame, the sliding rail, and other parts (slight friction may occur in some scenarios). The surface smoothness and wear resistance of the material will affect the quality of the warp yarn:
Smooth surface, low friction materials (such as steel coated with wear-resistant coatings and polished aluminum alloys): no burrs on the edges, low surface friction coefficient. Even if there is slight contact between the warp yarn and the edge of the frame after adjustment, it will not scratch the warp yarn (to avoid fuzzing and yarn breakage), while reducing the running resistance of the warp yarn and not adding additional tension fluctuations (especially friendly to light, thin, and high count warp yarns).
Materials with rough surface and easy rusting (such as ordinary steel without rust prevention treatment, plastics that are prone to aging and cracking): The surface is easy to rust, produce burrs or cracks. If the warp yarn comes into contact with the frame after adjustment, it may be scratched by burrs or contaminated by rusted parts (such as fabric defects caused by rust adhesion). At the same time, rough surfaces will increase the friction resistance of the warp yarn, indirectly affecting the stability of warp tension, and even requiring secondary adjustment of tension parameters to adapt.
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