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Crystal drawing device

A pulling device and crystal technology, applied in crystal growth, self-melting liquid pulling method, single crystal growth, etc., can solve problems such as load cell damage, and achieve the effect of improving weighing accuracy

Active Publication Date: 2014-07-09
SUN YAT SEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The effect of this reverse overload on the load cell is destructive

Method used

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  • Crystal drawing device
  • Crystal drawing device

Examples

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Embodiment 1

[0035] Such as figure 1 and 2 Shown is a schematic structural diagram of a specific embodiment of a crystal pulling device of the present invention. see figure 1 and 2 , the straight crystal pulling device of this specific embodiment comprises a crystal turning mechanism 1, a crystal lifting mechanism, a lifting platform 2 and a load cell 3 installed on the lifting platform 2 and a weighing basket, a crystal turning mechanism 1 and a weighing crane The baskets are all axisymmetric structures. The weighing basket includes the upper plate 5 of the hanging basket and the connecting rod 4 of the hanging basket connected to the upper plate 5 of the hanging basket at one end. The upper plate 5 of the hanging basket is connected with the connecting rod 4 of the hanging basket to form an axisymmetric structure. , the upper plate 5 of the hanging basket is installed on the weighing plane of the load cell 3, and the other end of the hanging basket connecting rod 4 passes downward thr...

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Abstract

The invention particularly relates to a crystal drawing device. The crystal drawing device comprises a crystal lifting mechanism, a lifting platform and a weighing sensor mounted on the lifting platform, and further comprises a crystal rotating mechanism and a weighing hanging basket which are both of axisymmetric structures; the weighing hanging basket comprises a hanging basket upper flat plate and a hanging basket connecting rod with one end connected with the hanging basket upper flat plate; the hanging basket upper flat plate is connected with the hanging basket connecting rod then to form an axisymmetric structure; the hanging basket upper flat plate is mounted on a weighing plane of the weighing sensor, and the other end of the hanging basket connecting rod penetrates downwards through a through hole on the lifting platform to be connected with the crystal rotating mechanism; the geometric symmetric axes of the weighing hanging basket and the crystal rotating mechanism are coaxially connected and fall on the weighing axis of the weighing sensor. In the crystal drawing device, the weight of the crystal rotating mechanism is borne by the weighing hanging basket, the weighing hanging basket and the crystal rotating mechanism are jointly connected to form a preload to act on the weighing sensor, the gravity of the preload falls on the weighing axis of the weighing sensor, thereby avoiding the influence of the load eccentricity on weighing results.

Description

technical field [0001] The invention relates to the field of artificially grown crystals, in particular to a crystal pulling device. Background technique [0002] Due to the large number of applications of crystal materials at home and abroad, especially laser crystal materials, the domestic crystal growth equipment market, especially the demand for crystal growth equipment by pulling method is increasing day by day. During the crystal growth process of the pulling method, the mass of the crystal increases very slowly, which imposes strict requirements on the weighing resolution of the weighing mechanism. In order to reduce the proportion of the preload caused by the mechanism in the overall weighing range and make full use of the range and accuracy of the load cell, today's automated crystal growth mechanisms often use the upper weighing method, and the load cell is installed on the lift. pull device. [0003] For example, most of the existing crystal pulling devices usin...

Claims

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Application Information

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IPC IPC(8): C30B15/28
Inventor 刘洋王彪朱允中
Owner SUN YAT SEN UNIV
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