Automatic grabbing mechanism

Abstract

The utility model discloses an automatic grabbing mechanism which comprises a furnace body, a water cooling screen is arranged in the furnace body, and a graphite partition plate guide ring is installed on the water cooling screen. A heat insulation disc is arranged above the graphite partition plate guide ring, and a hanging scaffold rod and a hanging scaffold head are arranged at the top of the heat insulation disc; and a grabbing mechanism is detachably mounted on the hanging scaffold head. In the utility model, when the silicon core is drawn, the heat insulation disc is placed on the graphite partition plate guide ring and plays a role in keeping the temperature of a thermal field uniform; the grabbing mechanism is mainly formed by fixing three lifting hooks on a connecting arm of a lower lifting rod through pins, the lifting hooks are in a closed state in a normal state, the bottoms of the lifting hooks move downwards to be opened along the conical surface of a lifting plate head during working, grooves are formed in the inner wall of the bottom of the lifting plate head, and the lifting hooks automatically contract to buckle the grooves in the inner wall of the lifting plate head and then are lifted upwards when reaching a certain position. And the middle heat insulation disc is taken away for secondary feeding, after feeding is completed, the long pin is pulled out, the balancing weight is pressed on the lifting hook and slowly placed on the graphite plate guide ring, and finally the grabbing mechanism is taken out.

Description

Technical Field

[0001] The utility model relates to an automatic grabbing mechanism. Background Art

[0002] The multi-branch round silicon core vertical pulling furnace is a device used to produce single crystal silicon, which is widely used in the semiconductor and solar energy industries. The thermal field design of the multi-branch round silicon core vertical pulling furnace is crucial to the quality and efficiency of crystal growth; it directly affects the uniformity, defect density and growth rate of crystal growth; a good thermal field design can reduce stress and impurities in the crystal and improve the electrical properties of the crystal.

[0003] During the silicon core drawing process, when adding materials for the second time, the insulation plate in the middle of the furnace needs to be taken away to add materials, and then put back after adding materials. The insulation plate plays a role in blocking the heat transfer upward and maintaining the required temperature of the thermal field. However, in the prior art, it is inconvenient to take the insulation plate, the taking efficiency is low, and it is easy to affect the growth quality of the crystal. Utility Model Content

[0004] The main purpose of the utility model is to provide an automatic grabbing mechanism for solving the above technical problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic grabbing mechanism, comprising a furnace body, a water-cooling screen is provided in the furnace body, a graphite baffle guide ring is installed on the water-cooling screen; an insulation plate is provided above the graphite baffle guide ring, a hanging plate rod and a hanging plate head are provided on the top of the insulation plate; a grabbing mechanism is detachably installed on the hanging plate head.

[0006] On the basis of the above scheme and as a preferred scheme of the above scheme: the grabbing mechanism includes an upper hanging rod and a lower hanging rod, the lower hanging rod is provided with a counterweight block, and a latch is provided under the counterweight block; a connecting arm is provided at the bottom of the lower hanging rod, and a hook is movably installed on the connecting arm, and the connecting arm and the hook are provided with three groups.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: the hook and the connecting arm are connected by a pin.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: the outer periphery of the hanging pan head is a conical surface structure, and a groove is provided on the inner wall of the bottom of the hanging pan head.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: the outer layer of the insulation disk is made of isostatic graphite, and the inner layer is made of thermal insulation felt.

[0010] The beneficial effects of the utility model are as follows: in the utility model, the heat insulation disk is placed on the graphite partition guide ring when the silicon core is drawn, which plays the role of thermal insulation and maintaining uniform temperature; the grabbing mechanism is mainly composed of 3 hooks fixed on the connecting arm of the lower suspension rod by pins. Under normal circumstances, the hook is in a closed state due to the effect of gravity. When working, the bottom of the hook moves downward along the conical surface of the suspension disk head and automatically opens. The bottom of the suspension disk head is umbrella-shaped and a groove is provided on the inner wall of the bottom. When it reaches a certain position, the hook automatically shrinks and buckles the groove on the inner wall of the suspension disk head and then lifts it upward, removing the middle heat insulation disk for secondary feeding. After the feeding is completed, the hook buckles the suspension disk head and pulls out the long pin, presses the counterweight block onto the hook, and slowly puts it down on the graphite plate guide ring. After the hook is separated from the heat insulation disk, the counterweight block presses down due to gravity, and the hook automatically opens and detaches from the heat insulation disk, and finally the grabbing mechanism is taken out. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 This utility model Figure 1 Enlarged schematic diagram at point A in the middle. DETAILED DESCRIPTION

[0013] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments. However, the specific implementation methods and embodiments described below are for illustrative purposes only and are not intended to limit the present invention.

[0014] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0015] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0016] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0018] See attached figure Figure 1 to Figure 2 An automatic grabbing mechanism in this embodiment includes a furnace body, a water-cooling screen 1 is provided in the furnace body, a graphite partition guide ring 2 is installed on the water-cooling screen 1; an insulation plate 3 is provided above the graphite partition guide ring 2, and a hanging plate rod 4 and a hanging plate head 5 are provided on the top of the insulation plate 3; a grabbing mechanism is detachably installed on the hanging plate head 5.

[0019] Specifically, the grabbing mechanism includes an upper suspension rod 11 and a lower suspension rod 10, a counterweight block 9 is provided on the lower suspension rod 10, and a long pin 8 is provided below the counterweight block 9; a connecting arm 100 is provided at the bottom of the lower suspension rod 10, and a hook 7 is movably installed on the connecting arm 100; the connecting arm 100 and the hook 7 are both provided with three groups.

[0020] Specifically, the hook 7 and the connecting arm 100 are connected via a pin 6 .

[0021] Specifically, the outer periphery of the hanging pan head 5 is a conical structure, and a groove is provided on the bottom inner wall of the hanging pan head 5. The conical structure of the hanging pan head 5 and the groove design on the bottom inner wall can improve the matching accuracy of the hanging pan head 5 and the hook 7, enhance the stability of the structure, and reduce errors during operation.

[0022] Specifically, the outer layer of the heat insulation plate 3 is made of isostatic graphite, and the inner layer is made of thermal insulation felt. The outer layer of the heat insulation plate 3 is made of isostatic graphite, and the inner layer is made of thermal insulation felt. This composite structure design not only utilizes the high temperature stability and thermal insulation performance of graphite, but also utilizes the thermal insulation performance of thermal insulation felt, effectively improving the thermal insulation effect and extending the service life of the heat insulation plate 3.

[0023] Working principle: when the silicon core is drawn, the insulation disk 3 is placed on the graphite partition guide ring 2, which plays the role of thermal insulation and maintaining uniform temperature; the grabbing mechanism is mainly composed of three hooks 7 fixed on the connecting arm 100 of the lower suspension rod 10 by pins 6. Under normal circumstances, the hook 7 is in a closed state due to the effect of gravity. When working, the bottom of the hook 7 moves downward along the cone surface of the hanging disk head 5 and automatically opens. The bottom of the hanging disk head 5 is umbrella-shaped and a groove is provided on the inner wall of the bottom. When it reaches a certain position, the hook 7 automatically shrinks and buckles the groove on the inner wall of the hanging disk head 5 and then lifts it up, removing the middle insulation disk 3 for secondary feeding. After the feeding is completed, the hook 7 buckles the hanging disk head 5, and the long pin 9 is pulled out, the counterweight block 9 is pressed onto the hook 7, and slowly lowered onto the graphite partition guide ring 2. After the hook 7 is separated from the insulation disk 3, the counterweight block 9 is pressed down by gravity, and the hook 7 automatically opens and detaches from the insulation disk 3, and finally the grabbing mechanism is taken out.

[0024] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic grasping mechanism, characterized in that: It includes a furnace body, a water-cooling screen is provided on the furnace body, a graphite baffle guide ring is installed on the water-cooling screen; an insulation plate is provided above the graphite baffle guide ring, a suspension rod and a suspension head are provided on the top of the insulation plate; a grabbing mechanism is detachably installed on the suspension head; the grabbing mechanism includes an upper suspension rod and a lower suspension rod, a counterweight block is provided on the lower suspension rod, and a long pin is provided below the counterweight block; a connecting arm is provided at the bottom of the lower suspension rod, a hook is movably installed on the connecting arm; the connecting arm and the suspension hook are each provided with three groups.

2. The automatic grasping mechanism according to claim 1, characterized in that: The hook is connected to the connecting arm via a pin.

3. The automatic grasping mechanism according to claim 2, characterized in that: The outer periphery of the hanging pan head is a conical structure, and a groove is arranged on the inner wall of the bottom of the hanging pan head.

4. The automatic grasping mechanism according to claim 3, characterized in that: The outer layer of the heat insulation disc is made of isostatic graphite, and the inner layer is made of thermal insulation felt.

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