Guide element with a gripper transport element

The guide element with a notch on the lower guide surface addresses wear and tear issues in gripper transport elements by reducing forces and preventing jamming, enhancing the durability and efficiency of gripper systems in weaving machines.

EP4759979A1Pending Publication Date: 2026-06-17PICANOL NV
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Patent Information

Application Number
EP2024219020
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-12-11
Publication Date
2026-06-17

AI Technical Summary

Technical Problem

Existing gripper transport elements in gripper weaving machines experience wear and tear due to high forces, leading to inefficiencies and potential jamming during weft thread insertion.

Method used

A guide element with a frame having an opening at a first side, featuring a notch on the lower guide surface that interacts with a longitudinal bar on the gripper transport element, providing additional side guidance and reducing forces on the upward projection, thus minimizing wear and improving stiffness.

Benefits of technology

The notch design reduces wear and tear on the guide element and gripper transport element, enhances guidance, and prevents jamming, improving the overall efficiency and durability of the gripper system.

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Abstract

The invention relates to a guide element (2) for a gripper transport element (3) of a gripper weaving machine, the guide element (2) comprising guide surfaces, which guide surfaces form a frame (10) for the gripper transport element (3), the frame (10) having an opening (20) at a first side (8), wherein the guide surfaces of the frame (10) comprise a lower guide surface (11) associated to a lower side (31) of the gripper transport element (3), wherein the guide element (2) is provided with an upward projection (17) associated to a longitudinal groove (33) on the lower side (31) of the gripper transport element (3), which upward projection (17) protrudes from the lower guide surface (11) of the frame (10), wherein a side surface of the upward projection (17) protruding from the lower guide surface (11) forms a first lateral guide surface (13) of the frame (10) at the first side (8), wherein the frame (10) comprises a second lateral guide surface (14) opposite to the first lateral guide surface (13), the second lateral guide surface (14) protruding from the lower guide surface (11) of the frame (10), and wherein the lower guide surface (11) is provided with a notch (19) associated to a longitudinal bar (38) on the lower side (31) of the gripper transport element (3), the notch (19) providing a third lateral guide surface (15). The invention further relates to a guide piece (41) for a gripper transport element (3), a gripper transport element (3), and a gripper transport system.
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Citation Information

Patent Citations

  • Gripper head for rapier loom

    KR1020010009132A

  • Rapier and gripper weaving machine

    WO2011134953A2

  • Guide sheet suitable for rapier loom and used for guiding weft insertion device

    CN210561002U

  • High-speed rapier loom fixing guide rail

    CN211546809U

  • Guide elements for gripping transport means of a loom

    EP1799894B1