Cross lapping machine

Abstract

The invention provides a cross lapping machine, which relates to a cross lapping machine for fiber webs in non-woven fabric processing. The cross lapping machine comprises a controller, a body, a discharging bench, a lapping trolley and a feeding and conveying curtain for the fiber webs, wherein the feeding and conveying curtain and the discharging bench form an angle of 90 degrees; and the lapping trolley reciprocates to swing in a feeding direction. The cross lapping machine also comprises a lapping trolley position sensing device and a traction mechanism, wherein the lapping trolley position sensing device comprises two sensors which are arranged on the body corresponding to rotation decelerating points at two ends of a lapping trolley stroke respectively; the two sensors are connectedwith the controller respectively; the traction mechanism comprises a first traction roll and a second traction roll which are arranged above the conveying curtain in parallel; the first traction rollis driven by a constant-speed motor; the second traction roll is driven by a variable-speed motor; and the constant-speed motor and the variable-speed motor are connected with the controller respectively. The cross lapping machine greatly improves the transverse thickness consistency of the breadth of a non-woven fabric, avoids the condition that the thickness of both sides is greater than that of the middle part, and greatly improves the quality of products.

Description

technical field [0001] The invention relates to a fiber web cross-plying machine in non-woven fabric processing, in particular to an improvement on the cross-plying machine. Background technique [0002] In the non-woven fabric processing, the continuous web laying process is to feed the fiber web into the cross-lapper through the mesh delivery curtain, and use the trolley in the cross-lapper to swing the fiber web left and right in a direction that is in line with the direction of the fiber web. On the discharge machine that moves in a straight line at 90°; the output from the discharge machine is the continuous cross-laminated semi-finished product, which is then spunlace and dried to become a finished non-woven fabric. This processing method and the special equipment produced according to this processing method have always had a problem that has been difficult to solve, that is, when the trolley runs close to both ends, there is a deceleration --- 0 speed --- Acceleratio...

AI Technical Summary

Problems solved by technology

This processing method and the special equipment produced according to this processing method have always had a problem that has been difficult to solve, that is, when the trolley runs close to both ends during the swing paving, there is a deceleration --- 0 speed --- Acceleration---the process of uniform linear motion

Since the conveying amount of the fiber web transported by the mesh curtain and the trolley itself is a fixed value, "overfeeding" will occur on both sides of the semi-finished product stacked on the discharge machine in the deceleration-acceleration section, resulting in the semi-finished product on both sides If the thickness is greater than the thickness in the middle, the final non-woven fabric will also appear thinner in the middle and thicker on both sides, seriously affecting product quality

Sometimes in order to allow customers to accept the product, only the thicker parts on both sides can only be removed, and large-format processing is required, resulting in great waste

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