Fiber preforming line forming clamping device and method

Abstract

The invention discloses a fiber preforming line forming clamping device and method. The device comprise a heating table press, a clamping device body and a preforming press which are sequentially arranged according to the advancing direction of fibers to be formed; the clamping device body slides on two parallel clamping hand guide rails and conveys fiber cloth heated by the heating table press tothe preforming press; and the clamping device is composed of two gantry clamping hand mechanisms which are arranged back and forth and independently perform linear motion. Each gantry clamping hand mechanism comprises two advancing and retreating mechanisms, lifting mechanisms, a cross rod mechanism and a clamping tool which respectively move along the clamping hand guide rails, wherein the advancing and retreating mechanisms are connected with the lifting mechanisms; the cross rod mechanism stretches over the clamping hand guide rails; the two ends of the cross rod mechanism are separately connected with the lifting mechanisms; the clamping tool comprises a plurality of clamping units; and each clamping unit maintains position closed loop or tension closed loop control over the fiber cloth in the pressing process of the preforming press.

Description

technical field [0001] The invention belongs to the field of fiber preforming equipment, and in particular relates to a forming clamping device and method for a fiber preforming line. Background technique [0002] Fiber preforming technology is a novel and practical fiber preform preparation technology developed since the early 1990s. The principle is to apply a small amount of special tackifying material-tackifier / setting agent on the surface of the reinforcing fiber or fabric, and make the laminated fabric or fiber bundle bonded by means of solvent volatilization, first heating up to soften or melt (pre-cured) and then cooling. The fiber preforms of the required shape, size and fiber volume content are prepared by means of pressure and shape molds. [0003] In the prior art, the forming clamping device used in the fiber preforming production mainly uses a robot with a special gripper to realize the feeding and cloth transmission requirements of the fiber cloth from the he...

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Problems solved by technology

[0003] In the prior art, the forming clamping device used in the production of fiber preforming mainly uses a robot with a special gripper to realize the feeding and cloth transmission requirements of the fiber cloth from the heating table press to the preforming press, and the robot is equipped with a special gripper. There are several problems in the way of clamping hands: First, different shapes of fiber fabrics require robots to pair with corresponding special clamping hands. Once there are many types of products and frequent changes, production efficiency will be affected, and the cost of tooling will be high; Second, the shorter the time required for the heated fiber cloth to go from the heating table to the preforming press, the better. The delivery of the machine, the transmission efficiency is slow; third, the gripper in the prior art is loosened before the fiber cloth is pressed and shaped, which cannot ensure that the fiber cloth maintains tension during the pressing process, and wrinkles are prone to appear

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