一种带中间夹纱的免割纱上换头机构

Abstract

本申请涉及玻纤窑炉拉丝设备技术领域，具体涉及一种带中间夹纱和高效稳定的免割纱上换头机构及其控制方法。上换头机构包括机头主轴、上换头座、夹纱机构、推纱机构。控制方法包括断气状态和通气状态。本申请提供的带中间夹纱和高效稳定的免割纱上换头机构及其控制方法，通过在上换头座内设置夹纱机构，能够将传统从机头主轴上丝环外表面钩纱上头改进为从上换头座内夹纱上头，有利于提高上换头效率和质量，尽量减少过渡纱数量；通过设置推纱机构能够对上换头过程中形成的过渡纱进行自动化回收处理。

Claims

1. A yarn-changing mechanism for non-cutting yarn with intermediate yarn clamping, comprising an upper changing seat (2), wherein an upper changing seat cavity (23) is provided in the middle part of the upper changing seat (2), and at least two yarn pushing channels (24) are provided on the side wall of the upper changing seat cavity (23), wherein the yarn pushing channels (24) are connected to the upper changing seat cavity (23). characterized in that It also includes at least two yarn clamping mechanisms (4); The yarn clamping mechanism (4) includes a yarn clamping piston rod (41), a yarn clamping return piece (42), and a yarn clamping plate (43). A yarn-clamping piston cavity (21) is also provided on the side wall of the inner cavity (23) of the upper head changing seat. The piston part of the yarn clamping piston rod (41) is disposed in the yarn clamping piston cavity (21), and the connecting rod part of the yarn clamping piston rod (41) extends out of the yarn clamping piston cavity (21) and enters the inner cavity (23) of the upper head changing seat. The yarn clamping plate (43) is disposed at the extended end of the connecting rod portion of the yarn clamping piston rod (41); The yarn clamping recovery component (42) is disposed in the yarn clamping piston cavity (21). When the yarn clamping piston rod (41) drives the yarn clamping plate (43) to separate to both sides under the action of compressed air, it can compress the yarn clamping recovery component (42).

2. The yarn-changing mechanism with intermediate yarn clamping as described in claim 1, characterized in that: The axis of the yarn-clamping piston cavity (21) is perpendicular to the axis of the upper head changing seat inner cavity (23).

3. The yarn-changing mechanism with intermediate yarn clamping as described in claim 1, characterized in that: The yarn clamping mechanism (4) also includes a yarn clamping piston chamber cover (44). The yarn clamping piston cavity (21) opens onto the outer surface of the upper head changing seat (2), and the yarn clamping piston cavity cover (44) is disposed on the outer opening of the yarn clamping piston cavity (21); The two ends of the yarn clamping recovery component (42) act on the yarn clamping piston chamber cover (44) and the yarn clamping piston rod (41), respectively.

4. The yarn-changing mechanism with intermediate yarn clamping as described in claim 3, characterized in that: The yarn clamping mechanism (4) also includes a yarn clamping navigation component (45); The upper head changing seat (2) is also provided with a yarn clamping navigation hole (25); One end of the yarn clamping navigation component (45) is fixedly connected to the yarn clamping plate (43), and the other end of the yarn clamping navigation component (45) is movably fitted into the yarn clamping navigation hole (25).

5. The yarn-changing mechanism with intermediate yarn clamp as described in claim 1, characterized in that: The yarn clamping piston cavity (21) is provided with a yarn clamping rod hole near the inner cavity (23) of the upper head changing seat, and the connecting rod part of the yarn clamping piston rod (41) extends out of the yarn clamping piston cavity (21) through the yarn clamping rod hole.

6. The yarn-changing mechanism with intermediate yarn clamping as described in claim 1, characterized in that: It also includes the nose cone (1); The upper head changing seat (2) is fixedly installed on the machine head (1); The upper head changing seat (2) is provided with a yarn clamping air passage (22); the yarn clamping air passage (22) is connected to the yarn clamping piston chamber (21); The machine head (1) is provided with a front air passage (13), which is connected to the yarn clamping air passage (22).

7. The yarn-changing mechanism with intermediate yarn clamping as described in claim 6, characterized in that: The machine head (1) is provided with a yarn pushing piston chamber (11) and a yarn pushing air passage (12). The yarn pushing air passage (12) is connected to the yarn pushing piston chamber (11). The yarn-changing mechanism with intermediate yarn clamp also includes a yarn-pushing mechanism (3). The yarn pushing mechanism (3) includes a yarn pushing piston rod (31), a yarn pushing return component (32), and a radial yarn pushing rod (33). The radial push rod (33) includes a plurality of radial push rods (332); The piston part of the yarn pushing piston rod (31) is disposed in the yarn pushing piston cavity (11), and the connecting rod part of the yarn pushing piston rod (31) extends into the inner cavity (23) of the upper head changing seat. The radial push rod (332) is disposed in the yarn pushing channel (24) and fixedly connected to the protruding end of the connecting rod of the yarn pushing piston rod (31); The yarn pusher return member (32) is disposed in the yarn pusher piston chamber (11). When the yarn pusher piston rod (31) drives the radial yarn pusher rod (33) to push forward along the axial direction of the machine head (1) under the action of compressed air, it can compress the yarn pusher return member (32).

8. The yarn-changing mechanism with intermediate yarn clamping as described in claim 7, characterized in that: The radial pusher rod (33) also includes a pusher disc (331). The radial push rod (332) is disposed on the yarn pusher (331) and extends radially; The yarn pusher disc (331) is fixedly installed at the extended end of the connecting rod portion of the yarn pusher piston rod (31).

9. The yarn-changing mechanism with intermediate yarn clamping as described in claim 7, characterized in that: The yarn pushing mechanism (3) also includes a yarn pushing piston chamber cover (34). The yarn pushing piston chamber cover (34) is fixedly installed at the opening of the yarn pushing piston chamber (11); The pusher piston chamber cover (34) is provided with a chamber cover connecting rod hole, and the connecting rod part of the pusher piston rod (31) extends into the inner cavity (23) of the upper head changing seat through the chamber cover connecting rod hole. The yarn pushing return component (32) is disposed between the yarn pushing piston chamber cover (34) and the piston portion of the yarn pushing piston rod (31).

10. The yarn-changing mechanism with intermediate yarn clamping as described in claim 7, characterized in that: The upper head changing seat (2) is provided with a yarn pusher hole at the part used to connect the machine head (1), and the yarn pusher hole is connected to the inner cavity (23) of the upper head changing seat. The connecting rod portion of the yarn pusher piston rod (31) extends into the inner cavity (23) of the upper head changing seat through the yarn pusher rod hole.

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