A free material cylinder automatic positioning trolley for pulling crystal

Abstract

The utility model discloses a kind of automatic in-position trolley of exempting from material cylinder for pulling crystal, it is characterized in that, including the in-position frame of square cross section, the top, middle and bottom of in-position frame are respectively welded for the first positioning part, second positioning part and third positioning part of mutually coaxial material cylinder feeding and feeding, first positioning part includes feeding hopper one, second positioning part includes feeding hopper two, and third positioning part includes feeding hopper three, and the bottom of feeding hopper one and the bottom of feeding hopper two are respectively hollow, and the bottom of feeding hopper three is closed. Realize accurate positioning when feeding of material cylinder, without manual help, while reducing the security risk when helping.

Description

Technical Field

[0001] This utility model relates to the field of Czochralski single crystal processing technology, specifically to an automatic positioning trolley for crystal pulling without the need for support. Background Technology

[0002] In the Czochralski process for growing large-size monocrystalline silicon, the loading and transportation of high-purity polycrystalline silicon raw materials is a critical pretreatment step. This step typically involves using a dedicated quartz cylinder to hold a large quantity of bulk polycrystalline silicon raw materials and dopants. The cylinder needs to be transported from the preparation area or cleaning area to the auxiliary chamber feeding position next to the monocrystalline furnace. The cylinder is temporarily placed on a dedicated mobile trolley. When feeding is needed, the operator pushes the trolley carrying the cylinder below the auxiliary chamber, and uses the furnace lifting mechanism or auxiliary hoist to vertically lift the cylinder and accurately load it above the quartz crucible inside the furnace, ready to unload the raw materials. After feeding, the cylinder needs to be unloaded onto the trolley. During unloading, there are difficulties in picking up and placing the cylinder on the trolley; the cylinder needs to be manually supported to be accurately placed on the trolley. The entire process requires workers to remain on-site, is time-consuming, relies on manpower, is inefficient, and poses safety risks.

[0003] Therefore, this application is submitted. Utility Model Content

[0004] The purpose of this utility model is to provide an automatic feeding trolley for crystal pulling that does not require manual assistance. By setting three positioning parts, namely feeding hopper one, feeding hopper two and feeding hopper three in the shape of buckets, the trolley restricts the feeding of the material into position, thereby eliminating the need for manual assistance and avoiding reliance on manpower.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following solution:

[0006] An automatic feeding trolley for crystal pulling without manual feeding includes a feeding frame with a square cross-section. The top, middle and bottom of the feeding frame are respectively welded with a first positioning part, a second positioning part and a third positioning part, which are coaxial with each other for feeding the feeding trolley. The first positioning part includes a feeding hopper one, the second positioning part includes a feeding hopper two, and the third positioning part includes a feeding hopper three. The bottom of the feeding hopper one and the bottom of the feeding hopper two are hollow, and the bottom of the feeding hopper three is closed.

[0007] Furthermore, the inner diameter of the top of the feed hopper is larger than its inner diameter at the bottom.

[0008] Furthermore, the top inner diameter of the second feed hopper is larger than its bottom inner diameter, and the top and bottom inner diameters of the third feed hopper are the same as the top and bottom inner diameters of the second feed hopper.

[0009] Furthermore, the top inner diameter of the second feed hopper is smaller than the bottom inner diameter of the first feed hopper.

[0010] Furthermore, four support rods are horizontally arranged in the middle of the infeed frame to form a rectangular frame, and the second feed hopper is located inside the rectangular frame.

[0011] Furthermore, the outer peripheral surface of the second feed hopper is tangent to the support rod.

[0012] Furthermore, the bottom of the feeding frame is provided with multiple parallel fixing rods, and the feeding hopper is located above the fixing rods and its bottom is connected to the cylinder.

[0013] Furthermore, the cylinder has a bottom surface that is welded to the fixing rod.

[0014] Furthermore, the total height of the feeding frame is at least two-thirds of the height of the feeding cylinder.

[0015] Furthermore, the bottom of the positioning frame is provided with symmetrical casters and directional casters.

[0016] The beneficial effects of this utility model are:

[0017] This invention utilizes a feeding frame positioned at two-thirds the height of the feeding cylinder, with feeding hoppers 1, 2, and 3 arranged sequentially from top to bottom. The top and bottom inner diameters of feeding hopper 1 are larger than those of feeding hoppers 2 and 3, respectively. The gradually decreasing inner diameter of feeding hopper 1 guides the feeding cylinder towards its bottom, centering it in feeding hopper 1, and then moving it down to feeding hoppers 2 and 3, stopping at the bottom of feeding hopper 3. This achieves precise positioning of the feeding cylinder during feeding, eliminating the need for manual assistance and reducing safety hazards associated with manual assistance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model in use;

[0019] Figure 2 for Figure 1 A partially enlarged structural diagram;

[0020] Figure 3 This is a top view of the feed hopper of this utility model.

[0021] Figure 4 This is a top view of the feed hopper 2 of this utility model;

[0022] Figure 5 This is a top view of the feed hopper three of this utility model.

[0023] Reference numerals: 1-Infeed frame, 2-Wheel caster, 3-Directional caster, 4-First positioning part, 40-Feed hopper one, 5-Second positioning part, 50-Feed hopper two, 51-Support rod, 6-Third positioning part, 60-Feed hopper three, 61-Cylinder, 62-Fixing rod, 7-Feeding cylinder. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0025] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Example 1

[0028] Embodiment 1 of this utility model is an automatic positioning trolley for crystal pulling without the need for support. It includes a positioning frame 1 with a square cross-section. The top, middle and bottom of the positioning frame 1 are respectively welded with a first positioning part 4, a second positioning part 5 and a third positioning part 6 for feeding the material into the feeding cylinder 7 and are coaxial with each other. The first positioning part 4 includes a feeding hopper 40, the second positioning part 5 includes a feeding hopper 50 and the third positioning part 6 includes a feeding hopper 60. The bottom of the feeding hopper 40 and the bottom of the feeding hopper 50 are hollow, and the bottom of the feeding hopper 60 is closed.

[0029] Reference Figure 1 and Figure 2This utility model features a square-shaped infeed frame 1 with three feed hoppers 40, 50, and 60 at its top, middle, and bottom. The bottoms of feed hoppers 40 and 50 are hollow. When the automatic infeeding trolley is moved to the target position (the trolley is coaxial with the auxiliary chamber), the feeding cylinder 7 can enter the top of the infeed frame 1, passing through feed hoppers 40 and 50 in sequence, and then into the interior of feed hopper 60, where it is sealed at the bottom. This completes the feeding process without the need for manual assistance of the feeding cylinder 7.

[0030] In addition, the loading frame 1 in this automatic loading trolley is made of stainless steel. The overall weight of the loading frame 1 and the three positioning devices is much greater than the total amount of the feeding cylinder 7 and the material. Multiple conventional reinforcing rods are set on the side of the loading frame 1 to improve the overall support strength of the loading frame 1 and to counterweight the loading frame 1, ensuring that the entire automatic loading trolley can bear the weight and preventing it from tipping over. The top inner diameter of each feeding hopper is larger than the bottom inner diameter, and it is made of PTFE material, which allows the feeding hopper to withstand high temperatures of 300℃ and maintain stable mechanical properties and chemical inertness. The height of each feeding hopper can be set according to the actual situation, which will not be elaborated here.

[0031] In some preferred embodiments, the top inner diameter of feed hopper 40 is larger than its bottom inner diameter. The top inner diameter of feed hopper 50 is larger than its bottom inner diameter, and the top and bottom inner diameters of feed hopper 60 are the same as those of feed hopper 50. The top inner diameter of feed hopper 50 is smaller than the bottom inner diameter of feed hopper 40.

[0032] The specific dimensions of feed hoppers 1 (40), 2 (50), and 3 (60) are limited. Feed hopper 1 (40) has the largest top and bottom inner diameters, and the top inner diameter of each feed hopper is larger than its bottom inner diameter. Feed hopper 1 (40) is the first part to contact the feeding cylinder 7. The gradually decreasing inner diameter of feed hopper 1 (40) guides the feeding cylinder 7 towards its bottom, centering it and guiding it to the center position of feed hopper 1 (40). It then moves down to feed hoppers 2 (50) and 3 (60) and stops at the bottom of feed hopper 3 (60). The height of feed hopper 1 (40) can be set according to actual feeding requirements to ensure positioning during the feeding process and prevent deviation.

[0033] It should be noted that when the material is fed to the feed hopper at position 40, the overall weight of the feed frame 1 is much greater than that of the feeding cylinder 7 and the residual material, so there will be no tipping over. The overall weight of the feed frame 1 can be set according to the actual situation, which will not be elaborated here.

[0034] Example 2

[0035] To ensure the stability of each feed hopper within the feeding frame 1 during feeding, feed hopper one 40 is welded to the top of the feeding frame 1; four support rods 51 are horizontally arranged in the middle of the feeding frame 1, forming a rectangular frame, and feed hopper two 50 is located within the rectangular frame. The outer peripheral surface of feed hopper two 50 is tangent to each of the support rods 51, as shown in the figure. Figure 3 and Figure 4 .

[0036] Specifically, the feed hopper 2 50 is fixed to the inside of the four support rods 51 by welding. Simultaneously, the outer circumferential surface of the feed hopper 2 50 is tangent to the support rods 51. Here, the support rods 51 provide stable support for the side of the feed hopper 2 50 without obstructing the passage of the feeding cylinder 7 through its bottom. The specific specifications of the support rods 51 can be set according to actual needs and will not be elaborated here.

[0037] Meanwhile, the bottom of the feeding frame 1 is provided with multiple parallel fixing rods 62, and the feeding hopper 3 60 is located above the fixing rods 62 and its bottom is connected to the cylinder 61. The cylinder 61 has a bottom surface welded to the fixing rods 62, as shown in the figure. Figure 5 The bottom of feed hopper 3 60 is provided with a cylinder 61 with a closed bottom surface. The bottom surface of this cylinder 61 is used to support the bottom of the feeding cylinder 7, and the cylinder 61 is welded to the top of multiple fixing rods 62, providing support for the assembly of the feeding hoppers of feed hopper 3 60, feed hopper 2 50, and feed hopper 1 40. At the same time, a counterweight is welded to the bottom of the fixing rods 62 (for...). Figure 2 The square structure at the bottom of the center positioning frame 1 increases the overall weight of the automatic positioning trolley.

[0038] Furthermore, the overall height of the feeding frame 1 is set to be at least two-thirds of the height of the feeding cylinder 7. The purpose is that within this height, combined with the overall weight, the feeding frame 1 can be effectively prevented from tipping over due to shaking when the feeding cylinder 7 is feeding material.

[0039] In some preferred embodiments, the bottom of the placement frame 1 is provided with symmetrical casters 2 and directional wheels 3. The casters 2 and directional wheels 3 are used for overall transfer and limiting after the transfer stops. Selecting casters 2 and directional wheels 3 of appropriate specifications and quantities is a conventional operation in the prior art, so as to achieve stable support and smooth transfer of the overall automatic placement trolley, which will not be elaborated here.

[0040] The working principle of this utility model is as follows: When feeding material into the feeding cylinder 7, the feeding frame is first moved to the lower part of the auxiliary chamber coaxially, and the directional wheel 3 is locked to fix the position of the feeding frame. The feeding cylinder 7 then descends sequentially under the lifting device of the auxiliary chamber, passing through feeding hopper 1 40, feeding hopper 2 50, and feeding hopper 3 60 in sequence. The gradually narrowing inner diameter of feeding hopper 1 40 guides the feeding cylinder 7 to move towards its bottom, aligning it with the center of feeding hopper 1, and then moving it down to feeding hopper 2 50 and feeding hopper 3 60, stopping at the bottom of feeding hopper 3 60. This achieves precise positioning of the feeding cylinder 7 during feeding, eliminating the need for manual assistance and reducing safety hazards during assistance.

[0041] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments based on the technical essence of the present utility model and within the spirit and principles of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A crystal pulling automatic feeding trolley without a support cylinder, characterized in that, The device includes a square-shaped infeed frame (1). The top, middle and bottom of the infeed frame (1) are welded with a first positioning part (4), a second positioning part (5) and a third positioning part (6) that are coaxial with each other and used for feeding the feeding cylinder (7). The first positioning part (4) includes a feeding hopper one (40), the second positioning part (5) includes a feeding hopper two (50), and the third positioning part (6) includes a feeding hopper three (60). The bottom of the feeding hopper one (40) and the bottom of the feeding hopper two (50) are hollow, and the bottom of the feeding hopper three (60) is closed.

2. The automatic positioning trolley for crystal pulling without material handling as described in claim 1, characterized in that, The top inner diameter of the feed hopper (40) is larger than its bottom inner diameter.

3. The automatic positioning trolley for crystal pulling without material handling as described in claim 1, characterized in that, The top inner diameter of the second feed hopper (50) is larger than its bottom inner diameter, and the top and bottom inner diameters of the third feed hopper (60) are the same as the top and bottom inner diameters of the second feed hopper (50).

4. The automatic positioning trolley for crystal pulling without material handling as described in claim 1, characterized in that, The top inner diameter of the second feed hopper (50) is smaller than the bottom inner diameter of the first feed hopper (40).

5. The automatic positioning trolley for crystal pulling without material handling as described in claim 1, characterized in that, The middle of the infeed frame (1) is provided with four horizontal support rods (51) that form a rectangular frame, and the second feed hopper (50) is located inside the rectangular frame.

6. The automatic positioning trolley for crystal pulling without material handling as described in claim 5, characterized in that, The outer circumferential surface of the feed hopper 2 (50) is tangent to the support rod (51).

7. The automatic positioning trolley for crystal pulling without material handling as described in claim 5, characterized in that, The bottom of the infeed frame (1) is provided with multiple parallel fixing rods (62), and the feed hopper three (60) is located above the fixing rods (62) and its bottom is connected to the cylinder (61).

8. The automatic positioning trolley for crystal pulling without material handling as described in claim 7, characterized in that, The cylinder (61) has a bottom surface that is welded to the fixing rod (62).

9. The automatic positioning trolley for crystal pulling without material handling according to claim 7, characterized in that, The total height of the infeeding frame (1) is at least two-thirds of the height of the feeding cylinder (7).

10. The automatic positioning trolley for crystal pulling without material handling according to claim 7, characterized in that, The bottom of the mounting frame (1) is provided with symmetrical casters (2) and directional casters (3).

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