CN114773091B

CN114773091B - Electric furnace crucible preparation process and processing equipment thereof

Info

Publication number: CN114773091B
Application number: CN202210265274.8A
Authority: CN
Inventors: 蔡敏南
Original assignee: Xiangshan Chuangyi Metal Products Co ltd
Current assignee: Xiangshan Chuangyi Metal Products Co ltd
Priority date: 2022-03-17
Filing date: 2022-03-17
Publication date: 2023-05-26
Anticipated expiration: 2042-03-17
Also published as: CN114773091A

Abstract

The invention discloses a preparation process of an electric furnace crucible, which comprises the following steps: a. preparing a crucible body; b. coating quartz mortar on the bottom wall and the side wall of the crucible body to form a first coating; c. coating a silicon nitride slurry outside the first coating on the side wall to form a second coating; d. coating a silicon nitride slurry outside the first coating on the bottom wall to form a third coating; e. drying the crucible body in the step 4; the second coating and the third coating are different in particle size of the mixed silicon nitride powder; the crucible body is beneficial to polycrystalline ingot casting by arranging the first coating, and metal impurities in the crucible body can be effectively reduced to diffuse into polycrystalline crystals in the crucible body.

Description

Electric furnace crucible preparation process and processing equipment thereof

Technical Field

The invention belongs to the technical field of crucible manufacturing, and particularly relates to an electric furnace crucible preparation process and processing equipment thereof.

Background

The electric furnace refers to an industrial electric furnace and a household electric furnace which supply heat by utilizing an electric heating effect. Industrial electric furnaces are divided into a resistance furnace and an induction furnace, and the induction furnace becomes the most energy-saving electric conversion heating mode in the electric furnace along with the development of modern industrial technology, so that the electric furnace is widely applied to a plurality of fields such as families, medicines, chemical industry, metallurgy and the like. The electric furnace has the characteristics of quick heating, easy temperature control, high heat efficiency and the like, and the electric furnace is generally heated by using a crucible as a container.

At present, various methods are commonly adopted in the industry to realize that uniform small grains are formed during the initial nucleation of the bottom. Although large companies in the industry have their own methods to achieve uniform small grains, the idea is basically consistent, mainly using a quartz crucible with coarse quartz sand particles at the bottom, and increasing nucleation volume at the primary stage of growing crystals by using cold impact, thereby obtaining uniform small grains with a certain size.

However, the crucible and each crystal casting manufacturer produced in the current market focus attention on solving the problem of nucleation of small bottom polycrystal, neglecting the fact that the side part of the crucible is relatively compact due to the relatively smooth spraying of silicon nitride powder, and the side part is nucleated in the ingot casting process, because the excellent nucleation condition similar to the bottom is not created, the initial nucleation is random and free, and is not optimal crystal grains and crystal directions, the crystal grain size is different, the local defect density is high, and the large dendrites generated by the side part can squeeze the excellent bottom columnar crystals, or change the growth direction of the original columnar crystals to enable the original columnar crystals to grow obliquely, increase dislocation propagation, or 'phagocytize' the bottom columnar crystals, so that the excellent bottom crystal grains fail in competitive growth, and the effect of a high-efficiency layer of the bottom is weakened. And if the lateral silicon nitride coating is sprayed relatively loosely and unevenly during spraying, although conditions are created for lateral small grain nucleation, as the metal impurities in the crucible body far exceed the impurities in the silicon nitride and silicon materials, the silicon nitride coating can continuously diffuse into the crystal through the looseness, so that the red area of the lateral part of the silicon wafer is wider.

Disclosure of Invention

The invention provides an electric furnace crucible preparation process and processing equipment thereof, which aim to overcome the defects in the prior art.

In order to achieve the above purpose, the present invention adopts the following technical scheme: an electric furnace crucible preparation process comprises the following steps:

a. preparing a crucible body;

b. coating quartz mortar on the bottom wall and the side wall of the crucible body to form a first coating;

c. coating a silicon nitride slurry outside the first coating on the side wall to form a second coating;

d. coating a silicon nitride slurry outside the first coating on the bottom wall to form a third coating;

e. drying the crucible body in the step 4;

the silicon nitride slurry is formed by mixing mixed silicon nitride powder, silica sol and water, and the particle sizes of the mixed silicon nitride powder in the second coating and the third coating are different.

The first coating is arranged to enable the crucible body to be beneficial to polycrystalline ingot casting, and metal impurities in the crucible body can be effectively reduced from diffusing into polycrystalline crystals in the crucible body; the second coating is arranged to provide conditions for nucleation of small lateral grains in the process of polycrystalline ingot casting, so that the defect density of the small lateral grains is low, the extrusion acting force on the bottom columnar crystals is small, and better vertical growth conditions are provided for the bottom columnar crystals.

The processing equipment applied to the electric furnace crucible preparation process comprises a base and a material loading block arranged on the base, wherein a first movable groove is formed in the base, the first movable groove is of a return type structure, and the material loading block is arranged in the first movable groove; the device comprises a loading block, a first movable cavity, a first clamping jaw assembly, a second clamping jaw assembly, a first connecting plate, a second movable groove, a first clamping jaw assembly and a second clamping jaw assembly, wherein the loading block is provided with the first movable cavity; the first material placing table, the second material placing table and the third material placing table are arranged above the base.

A third movable groove is formed in the second material placing table, two groups of first rotating rollers are arranged on the inner wall of the third movable groove, and a first driving belt is wound on the two groups of first rotating rollers; the clamping jaw assembly comprises a movable rod arranged in the second movable groove and a fixed jaw arranged at the top of the movable rod, a fourth movable groove is formed in the top of the movable rod, a first connecting shaft is arranged in the fourth movable groove, the fixed jaw is arranged at one end of the first connecting shaft, a fifth movable groove is formed in the inner wall of the fixed jaw, two groups of second rotating rollers are arranged in the fifth movable groove, and a second transmission belt is wound on the two groups of second rotating rollers.

The bottom of the second movable groove is provided with a first through groove, a third connecting plate is hinged to the side wall of the movable rod, one end of the third connecting plate is hinged to a second connecting plate, and one end of the second connecting plate is hinged to the inner wall of the first through groove; the movable rod is characterized in that a first connecting spring is arranged on the side wall of the movable rod, one end of the first connecting spring is fixedly connected to the inner wall of the second movable groove, a sixth movable groove is formed in the inner wall of the second movable groove, a first fixing block is arranged in the sixth movable groove, a seventh movable groove is formed in the inner wall of the sixth movable groove, and a ratchet plate is arranged in the seventh movable groove.

A third movable cavity is formed at one end of the sixth movable groove, a second connecting spring is arranged on the side wall of the first fixed block, an eighth movable groove is formed on the first fixed block, a third connecting spring is arranged on the inner wall of the eighth movable groove, and a second fixed block is arranged at one end of the third connecting spring; the top of the first connecting plate is provided with a first connecting block, the bottom of the first connecting plate is provided with a ninth movable groove, a piston rod of the air cylinder penetrates through the ninth movable groove, a first movable block is arranged in the ninth movable groove, the bottom of the first movable block is provided with a tenth movable groove, the inner wall of the tenth movable groove is provided with an eleventh movable groove, the eleventh movable groove is internally provided with a first push plate, the first push plate is provided with a first reset spring, the first push plate is provided with a first connecting rope, and one end of the first connecting rope is fixedly connected to the first fixed block; the first movable block pushes the ratchet plate to move upwards when moving upwards.

A second movable cavity is formed in one end of the seventh movable groove, a fourth connecting plate is arranged on the side wall of the ratchet plate, a second pushing plate is arranged on the side wall of the first movable block, the second pushing plate penetrates through the second movable cavity, and the fourth connecting plate is arranged above the second pushing plate; a piston rod of the air cylinder is provided with a first limiting block; the novel movable structure is characterized in that a twelfth movable groove is formed in the inner wall of the sixth movable groove, a thirteenth movable groove corresponding to the twelfth movable groove is formed in the first fixed block, a fifth connecting plate is arranged in the twelfth movable groove, a first sliding block is arranged on the second fixed block, a first sliding groove matched with the first sliding block is formed in the fifth connecting plate, a fourteenth movable groove is formed in the side wall of the first connecting plate, a movable plate is arranged in the fourteenth movable groove, a second connecting rope is arranged on the movable plate, one end of the second connecting rope is fixedly connected to the fifth connecting plate, and a third pushing plate is arranged on the inner wall of the first movable cavity.

A fifteenth movable groove is formed in the inner wall of the first movable cavity, a sixteenth movable groove is formed in the side wall of the fifteenth movable groove, a seventeenth movable groove is formed in the side wall of the sixteenth movable groove, the width of the sixteenth movable groove is smaller than that of the fifteenth movable groove, and an opening is formed in the bottom of the sixteenth movable groove; a second movable block is arranged in the seventeenth movable groove, a fourth connecting spring is arranged on the second movable block, a first connecting rod is arranged at one end of the fourth connecting spring, the first connecting rod is arranged in the fifteenth movable groove, an eighteenth movable groove is arranged at one end of the first connecting rod, a third push plate is rotatably connected to the inner wall of the eighteenth movable groove, a supporting plate is arranged at the bottom of the eighteenth movable groove, and a groove matched with the third push plate is arranged at the top of the fifteenth movable groove; one end of the first connecting rod is provided with a guide rod, and the second movable block is provided with a through hole corresponding to the guide rod; a seventeenth movable groove is formed in the side wall of the seventeenth movable groove, a twentieth movable groove is formed in the side wall of the nineteenth movable groove, a second connecting rod is arranged in the twentieth movable groove, a fourth push plate is arranged at one end of the second connecting rod, and a fifth connecting spring is arranged at the other end of the second connecting rod; the bottom of the first movable cavity is provided with a twenty-first movable groove communicated with the twenty-first movable groove, the bottom of the twenty-first movable groove is provided with a sixth connecting spring, and one end of the sixth connecting spring is provided with a first pushing block.

A second through groove is formed in the side wall of the first connecting plate, a twenty-second movable groove is formed in the inner wall of the second through groove, an eighth connecting spring is arranged in the twenty-second movable groove, a baffle is arranged at one end of the eighth connecting spring, a twenty-third movable groove is formed in the inner wall of the first movable cavity, a seventh connecting spring is arranged on the inner wall of the twenty-third movable groove, and a stop block corresponding to the second through groove is arranged at one end of the seventh connecting spring; the novel movable trolley is characterized in that a twenty-fourth movable groove is formed above the twenty-second movable groove, a third connecting rod is arranged in the twenty-fourth movable groove, a fifth pushing plate is arranged at one end of the third connecting rod, a fourth movable cavity is formed in the side wall of the twenty-fourth movable groove, a twenty-fifth movable groove communicated with the sixth movable groove is formed in the side wall of the fourth movable cavity, a first pushing rod is arranged in the twenty-fifth movable groove in a penetrating mode, a first transmission rod is arranged in the fourth movable cavity, and the middle of the first transmission rod is rotatably connected to the inner wall of the fourth movable cavity.

A third through groove is formed in the side wall of the tenth movable groove, a twenty-eighth movable groove is formed in the inner wall of the ninth movable groove, a second limiting block is arranged in the twenty-eighth movable groove, a chute is formed in the bottom of the second limiting block, a fifth movable cavity is formed in the bottom of the twenty-eighth movable groove, a sixth connecting plate is arranged on the second limiting block, and a plurality of second reset springs are arranged on the sixth connecting plate; the baffle bottom is equipped with the second connecting block, second connecting block bottom is equipped with the twenty-sixth movable groove, be equipped with on the baffle with the communicating twenty-seventh movable groove in twenty-seventh movable groove, be equipped with the second push rod in the twenty-sixth movable groove, wear to be equipped with the third push rod in the twenty-sixth movable groove, be equipped with the third reset spring on the third push rod, the third push rod top still articulates has the fourth connecting rod, the fourth connecting rod other end articulates in on the second push rod, the second push rod is followed when stretching out in the twenty-seventh movable groove, the second stopper is toward in the twenty-eighth movable groove.

A twenty-ninth movable groove is formed in the inner wall of the twenty-second movable groove, a fifth movable cavity is formed in one end of the twenty-ninth movable groove, a sixth movable cavity is formed in one end of the fifth movable cavity, a sixth pushing plate is arranged in the twenty-ninth movable groove, a fifth connecting rod is hinged to the sixth pushing plate, a fourth pushing rod is hinged to one end of the fifth connecting rod, the fourth pushing rod penetrates through the fifth movable cavity, a sixth connecting rod is arranged at the bottom of the sixth connecting plate, the sixth connecting rod penetrates through the sixth movable cavity, a seventh connecting rod is arranged at one end of the sixth connecting rod, a second transmission rod is arranged in the sixth movable cavity, and the middle of the second transmission rod is rotatably connected to the inner wall of the sixth movable cavity; the novel movable connecting plate comprises a first connecting plate, and is characterized in that a cavity is formed in the side wall of the first connecting plate, a rubber film is arranged on the side wall of the cavity, a thirty-first movable groove is formed in the inner wall of the cavity, a thirty-second movable groove is formed in the inner wall of the cavity, a seventh pushing plate is arranged in the cavity, a seventh connecting plate matched with the thirty-first movable groove is arranged on the side wall of the seventh pushing plate, a thirty-first movable groove communicated with the thirty-first movable groove is formed in the bottom of the ninth movable groove, a ninth connecting spring is arranged at the bottom of the thirty-first movable groove, a second pushing block is arranged at the top end of the ninth connecting spring, a third connecting rope is arranged on the seventh pushing plate, and one end of the third connecting rope is fixedly connected to the baffle.

The invention has the following advantages: the first coating is arranged to enable the crucible body to be beneficial to polycrystalline ingot casting, and metal impurities in the crucible body can be effectively reduced from diffusing into polycrystalline crystals in the crucible body; the second coating is arranged to provide conditions for nucleation of small lateral grains in the process of polycrystalline ingot casting, so that the defect density of the small lateral grains is low, the extrusion acting force on the bottom columnar crystals is small, and better vertical growth conditions are provided for the bottom columnar crystals.

Drawings

FIG. 1 is a schematic view showing a construction of an electric furnace crucible processing apparatus according to the present invention.

FIG. 2 is a front view of a processing apparatus for an electric furnace crucible according to the present invention.

Fig. 3 is a cross-sectional view taken along A-A in fig. 2.

Fig. 4 is an enlarged view at a in fig. 3.

Fig. 5 is an enlarged view at B in fig. 4.

Fig. 6 is a cross-sectional view taken along B-B in fig. 2.

Fig. 7 is an enlarged view at C in fig. 6.

Fig. 8 is an enlarged view of D in fig. 7.

Fig. 9 is a cross-sectional view taken along line C-C of fig. 2.

Fig. 10 is a cross-sectional view taken along N-N in fig. 2.

Fig. 11 is an enlarged view at E in fig. 10.

FIG. 12 is a right side view of a processing apparatus for an electric furnace crucible according to the present invention.

Fig. 13 is a cross-sectional view taken along D-D in fig. 12.

Fig. 14 is an enlarged view of F in fig. 13.

Fig. 15 is a cross-sectional view taken along line E-E of fig. 12.

Fig. 16 is an enlarged view at G in fig. 15.

Fig. 17 is an enlarged view at H in fig. 16.

Fig. 18 is an enlarged view of fig. 16 at I.

Fig. 19 is a cross-sectional view taken along F-F in fig. 12.

Fig. 20 is an enlarged view at J in fig. 19.

Fig. 21 is a cross-sectional view taken along M-M in fig. 12.

Fig. 22 is an enlarged view at K in fig. 21.

Fig. 23 is an enlarged view at L in fig. 22.

Fig. 24 is a cross-sectional view taken along G-G in fig. 12.

Fig. 25 is an enlarged view at M in fig. 24.

Fig. 26 is a cross-sectional view taken along H-H in fig. 12.

Fig. 27 is an enlarged view at N in fig. 26.

Fig. 28 is an enlarged view of fig. 26 at O.

Fig. 29 is a cross-sectional view taken along J-J in fig. 12.

Fig. 30 is an enlarged view at P in fig. 29.

Fig. 31 is an enlarged view of Q in fig. 29.

Detailed Description

An electric furnace crucible preparation process comprises the following steps:

a. preparing a crucible body;

e. Drying the crucible body in the step 4;

The preparation method of the silicon nitride slurry in the step c comprises the following steps: mixing alpha-phase silicon nitride powder with the particle size of 1-3 mu m and beta-phase silicon nitride powder with the particle size of 13-15 mu m in a mass ratio of 1:1-1:1.5 to form mixed silicon nitride powder; mixing the mixed silicon nitride powder, silica sol and water according to the mass ratio of 2:1:6 to form mixed slurry; the mixed slurry is stirred for 0.5h to 1h at the temperature of 25 ℃ to 30 ℃.

The preparation method of the silicon nitride slurry in the step d comprises the following steps: mixing alpha-phase silicon nitride powder with the particle size of 1.5-2 mu m and beta-phase silicon nitride powder with the particle size of 2.5-3 mu m in a mass ratio of 1:1-1:1.5 to form mixed silicon nitride powder; mixing the mixed silicon nitride powder, silica sol and water according to the mass ratio of 2:1:6 to form mixed slurry; the mixed slurry is stirred for 0.5h to 1h at the temperature of 25 ℃ to 30 ℃.

A fourth coating is further coated between the first coating and the third coating, and the fourth coating is used for preventing oxygen atoms in the first coating from diffusing into crystals; the preparation method of the fourth coating comprises the following steps: mixing silica sol and silicon nitride particles with the diameters of 50 meshes to 70 meshes according to the mass ratio of 2:1, stirring for 0.5h to 1h at the temperature of 25 ℃ to 30 ℃ to form mixed mortar, coating the mixed mortar on a first coating positioned outside the bottom wall, and sintering for 1h to 2h at the temperature of 100 ℃ to 600 ℃ to form a fourth coating; the second coating and the third coating are both coated by a crisscross method.

The crucible body keeps the same pressure in the crucible inner filling pressure and the crucible outer hearth in the low-pressure casting process, and the overall quality of the crucible is improved.

As shown in fig. 1-31, a processing device applied to the electric furnace crucible preparation process comprises a base 1 and a material loading block 2 arranged on the base 1, wherein a first movable groove is arranged on the base 1, the first movable groove is of a loop-shaped structure, and the material loading block 2 is arranged in the first movable groove; the device comprises a loading block 2, a first movable cavity is arranged on the loading block 2, a first movable groove is formed in the top of the first movable cavity, a device cavity is formed in the bottom of the first movable cavity, an air cylinder 21 is arranged in the device cavity, a first connecting plate 3 is arranged in the first movable cavity, a second movable groove is formed in the first connecting plate 3, and a clamping jaw assembly is arranged in the second movable groove; a first material placing table 11, a second material placing table 13 and a third material placing table 14 are arranged above the base 1; the first material placing table, the second material placing table and the third material placing table are respectively arranged on the base through mounting frames, when the crucible is processed, the crucible is placed on the material loading block, the cylinder pushes the first connecting plate to move upwards, the first connecting plate drives the clamping jaw assembly to move upwards, the clamping jaw assembly is attached to the side wall of the crucible to fix the crucible, the cylinder continues to drive the first connecting plate to move upwards, the clamping jaw assembly drives the crucible to move upwards together, the crucible is lifted from the material loading block to be in a suspended state, the material loading block drives the crucible to move towards the first material placing table, one end of the first material placing table is propped against the side wall of the bottom of the crucible, the crucible is turned to a horizontal state under the action of the first material placing table, at the moment, the crucible is positioned on the first material placing table, the material loading block continues to move in the first movable groove, the crucible moves from the first material placing table to the second material placing table, operators coat quartz mortar on the inner wall of the crucible, and then coat a second coating layer and a third coating layer on the inner wall and the bottom wall of the crucible, and the preparation is completed; the crucible coated with the coating continuously moves along with the material loading block, the material loading block drives the crucible to move from the second material loading table to the third material loading table, when the crucible moves down from the third material loading table, the bottom end of the crucible firstly loses supporting force, the bottom end of the crucible turns downwards, the crucible turns to a vertical state after moving down from the third material loading table, the cylinder drives the first connecting plate to move downwards, the crucible is placed on the material loading block after being lowered onto the material loading block, and the crucible is taken down from the material loading block, so that the preparation of the crucible is completed; the first movable groove is arranged to be of a return structure, so that the loading block can be moved to the initial position again when the crucible after the processing is completed is taken down, and the loading block can be reset conveniently.

A third movable groove is formed in the second material placing table 13, two groups of first rotating rollers 131 are arranged on the inner wall of the third movable groove, and a first driving belt 132 is wound on the two groups of first rotating rollers 131; the clamping jaw assembly comprises a movable rod 31 arranged in the second movable groove and a fixed jaw 312 arranged at the top of the movable rod 31, a fourth movable groove is arranged at the top of the movable rod 31, a first connecting shaft 311 is arranged in the fourth movable groove, the fixed jaw 312 is arranged at one end of the first connecting shaft 311, a fifth movable groove is arranged on the inner wall of the fixed jaw 312, two groups of second rotating rollers 317 are arranged in the fifth movable groove, and a second driving belt 313 is wound on the two groups of second rotating rollers 317; when the first connecting plate is driven to move upwards by the air cylinder, the movable rod moves along with the first connecting plate in the crucible direction, after the first connecting plate rises to a designated height, the fixed claw clamps the side wall of the crucible, after the fixed claw fixes the crucible, the first connecting plate continues to rise, the crucible rises along with the first connecting plate, the fixed position is arranged at the middle position of the crucible, the crucible is turned over after being propped against the first material placing table in the moving process, and the crucible is turned over to be in a horizontal state; after the crucible moves from the first material placing table to the second material placing table, the first rotating roller drives the first driving belt to rotate, the first driving belt contacts with the side wall of the crucible, the first driving belt drives the crucible to rotate, the difficulty of coating the inner wall of the crucible is reduced, and the crucible processing efficiency is improved; the crucible is in a rotating state after being turned to a horizontal state, so that each side wall of the crucible is uniformly stressed, sagging phenomenon of the coating is avoided, the smoothness of the surface of the coating is improved, and the quality of finished products of the crucible is improved; the fixed claw is connected with the movable rod through the first connecting shaft, so that the crucible can normally rotate when being contacted with the first transmission belt, and the crucible is positioned, and the crucible is prevented from falling from the second material placing table.

A first through groove is formed in the bottom of the second movable groove, a third connecting plate 315 is hinged to the side wall of the movable rod 31, one end of the third connecting plate 315 is hinged to a second connecting plate 316, and one end of the second connecting plate 316 is hinged to the inner wall of the first through groove; a first connecting spring 314 is arranged on the side wall of the movable rod 31, one end of the first connecting spring 314 is fixedly connected to the inner wall of the second movable groove, a sixth movable groove is arranged on the inner wall of the second movable groove, a first fixed block 39 is arranged in the sixth movable groove, a seventh movable groove is arranged on the inner wall of the sixth movable groove, and a ratchet plate 320 is arranged in the seventh movable groove; when the first connecting plate is positioned at the bottom of the first movable cavity, the third connecting plate and the second connecting plate are propped against the bottom of the first movable cavity, and the third connecting plate pushes the movable rod to move towards one end of the second movable groove, so that the fixed claws are in a separated state, and the crucible is placed on the loading block; when the first connecting plate moves upwards, the first connecting spring pulls the movable rod to move towards one end of the second movable groove, the third connecting plate and the second connecting plate penetrate out of the first through groove, the fixed claw moves towards the crucible, the fixed claw abuts against the crucible, the first fixed block moves towards the movable rod, the ratchet plate rises from the seventh movable groove to be in contact with the first fixed block, the first fixed block abuts against the side wall of the movable rod, the ratchet plate abuts against the first fixed block, the ratchet plate fixes the first fixed block, the first fixed block provides a supporting effect for the movable rod, the movable rod is fixed at one end of the second movable groove, and the fixed effect of the fixed claw on the crucible is guaranteed.

A third movable cavity is arranged at one end of the sixth movable groove, a second connecting spring 394 is arranged on the side wall of the first fixed block 39, an eighth movable groove is arranged on the first fixed block 39, a third connecting spring 392 is arranged on the inner wall of the eighth movable groove, and a second fixed block 391 is arranged at one end of the third connecting spring 392; the top of the first connecting plate 3 is provided with a first connecting block 32, the bottom of the first connecting plate 3 is provided with a ninth movable groove, a piston rod of the air cylinder 21 is arranged in the ninth movable groove in a penetrating manner, a first movable block 33 is arranged in the ninth movable groove, a tenth movable groove is arranged at the bottom of the first movable block 33, an eleventh movable groove is arranged on the inner wall of the tenth movable groove, a first push plate 332 is arranged in the eleventh movable groove, a first reset spring 333 is arranged on the first push plate 332, a first connecting rope is arranged on the first push plate 332, and one end of the first connecting rope is fixedly connected to the first fixed block 39; the first movable block 33 pushes the ratchet plate 320 to move upward when moving upward; when the first connecting plate is positioned at the bottom of the first movable cavity, the second fixed block is positioned in the eighth movable groove, the first fixed block is positioned in the third movable cavity, the second fixed block is propped against the inner wall of the third movable cavity, and the movable rod can normally move in the second movable groove; when the cylinder drives the first connecting plate to rise, the cylinder pushes the first movable block to move upwards, the first movable block pushes the ratchet plate to move upwards, the ratchet plate rises from the seventh movable groove to be in contact with the first fixed block, at the moment, the first movable block abuts against the top of the ninth movable groove, the piston rod of the cylinder pushes the first push plate to move upwards when continuing to stretch out, the first push plate moves relative to the first movable block, the first connecting rope pulls the first fixed block to move, when the first fixed block moves out of the third movable cavity, the second fixed block stretches out of the eighth movable groove, the second fixed block stretches into the second movable groove, when the first fixed block moves to one end of the sixth movable groove, the second fixed block abuts against the side wall of the movable rod, a fixing force is provided for the movable rod, and stability in the crucible processing process is improved.

A second movable cavity is formed at one end of the seventh movable groove, a fourth connecting plate is arranged on the side wall of the ratchet plate 320, a second push plate 331 is arranged on the side wall of the first movable block 33, the second push plate 331 is arranged in the second movable cavity in a penetrating manner, and the fourth connecting plate is arranged above the second push plate 331; a first limiting block 211 is arranged on a piston rod of the air cylinder 21; a twelfth movable groove is formed in the inner wall of the sixth movable groove, a thirteenth movable groove corresponding to the twelfth movable groove is formed in the first fixed block 39, a fifth connecting plate 310 is arranged in the twelfth movable groove, a first sliding block 393 is arranged on the second fixed block 391, a first sliding groove matched with the first sliding block 393 is formed in the fifth connecting plate 310, a fourteenth movable groove is formed in the side wall of the first connecting plate 3, a movable plate 330 is arranged in the fourteenth movable groove, a second connecting rope is arranged on the movable plate 330, one end of the second connecting rope is fixedly connected to the fifth connecting plate 310, and a third pushing plate 253 is arranged on the inner wall of the first movable cavity; when the piston rod of the air cylinder is propped against the bottom of the first push plate, the first push plate drives the first movable block to move upwards, the second push plate pushes the fourth connecting plate to move upwards, the fourth connecting plate drives the ratchet plate to move upwards, and the ratchet plate extends out of the seventh movable groove to provide a fixing effect for the moved first fixed block; after the first fixed block moves out of the third movable cavity, the second fixed block moves to drive the fifth connecting plate to move, when the first connecting plate descends, the movable plate is propped against the third push plate, the third push plate provides resistance for the movable plate to descend, the first connecting plate moves downwards relative to the movable plate, the second connecting rope pulls the fifth connecting plate to move, the fifth connecting plate drives the second fixed block to move, the second fixed block enters the eighth movable groove again, the ratchet plate moves downwards to be in contact with the bottom surface of the first fixed block, and the first fixed block resets under the action of the second connecting spring.

A fifteenth movable groove is formed in the inner wall of the first movable cavity, a sixteenth movable groove is formed in the side wall of the fifteenth movable groove, a seventeenth movable groove is formed in the side wall of the sixteenth movable groove, the width of the sixteenth movable groove is smaller than that of the fifteenth movable groove, and an opening is formed in the bottom of the sixteenth movable groove; a second movable block 25 is arranged in the seventeenth movable groove, a fourth connecting spring 251 is arranged on the second movable block 25, a first connecting rod 252 is arranged at one end of the fourth connecting spring 251, the first connecting rod 252 is arranged in the fifteenth movable groove, an eighteenth movable groove is arranged at one end of the first connecting rod 252, the third push plate 253 is rotatably connected to the inner wall of the eighteenth movable groove, a supporting plate is arranged at the bottom of the eighteenth movable groove, and a groove matched with the third push plate 253 is arranged at the top of the fifteenth movable groove; one end of the first connecting rod 252 is provided with a guide rod 254, and the second movable block 25 is provided with a through hole corresponding to the guide rod 254; a nineteenth movable groove is formed in the side wall of the seventeenth movable groove, a twentieth movable groove is formed in the side wall of the nineteenth movable groove, a second connecting rod 261 is arranged in the twentieth movable groove, a fourth push plate 26 is arranged at one end of the second connecting rod 261, and a fifth connecting spring 262 is arranged at the other end of the second connecting rod 261; a twenty-first movable groove communicated with the twenty-first movable groove is formed in the bottom of the first movable cavity, a sixth connecting spring 241 is arranged at the bottom of the twenty-first movable groove, and a first pushing block 24 is arranged at one end of the sixth connecting spring 241; the bottom of the second movable block is provided with a supporting spring 255; when the first connecting plate moves upwards, the second movable block is positioned at the top of the seventeenth movable groove, the first connecting rod is propped against the inner wall of the fifteenth movable groove, the third push plate extends out of the fifteenth movable groove, the movable plate is positioned at the bottom of the fourteenth movable groove, the movable plate moves to the bottom of the third push plate and then pushes the third push plate to turn upwards, the third push plate enters the groove, and the first connecting plate normally passes through one side of the third push plate; when the first connecting plate moves downwards, the movable plate abuts against the third push plate, the supporting spring provides supporting force for the second movable block, the third push plate abuts against the supporting plate and cannot overturn downwards, the first connecting plate moves downwards relative to the movable plate, and the second connecting rope pulls the fifth connecting plate to move so that the second fixed block enters the eighth movable groove; the movable plate moves to the top of the fourteenth movable groove, then the first connecting plate continuously moves downwards, the movable plate pushes the third push plate to move downwards, the guide rod and the through hole cooperate to drive the second movable block to move downwards when the first connecting rod moves downwards, after the first connecting rod moves to the bottom of the fifteenth movable groove, the fourth connecting spring pulls the first connecting rod to move towards the opening, the third push plate enters the fifteenth movable groove, and the movable plate passes through one side of the third push plate, so that the first connecting plate normally descends; after the first connecting plate moves to the bottom of the first movable cavity, the first connecting plate pushes the first pushing block to move downwards, the first pushing block pushes air in the twenty-first movable groove into the twenty-first movable groove, the air pressure pushes the second connecting rod to move, the fourth pushing plate pushes the guide rod to move forwards, the first connecting rod is pushed into the fifteenth movable groove, the supporting spring pushes the second movable block to move upwards, and reset of the second movable block and the third pushing plate is completed.

A second through groove is formed in the side wall of the first connecting plate 3, a twenty-second movable groove is formed in the inner wall of the second through groove, an eighth connecting spring 344 is arranged in the twenty-second movable groove, a baffle 34 is arranged at one end of the eighth connecting spring 344, a twenty-third movable groove is formed in the inner wall of the first movable cavity, a seventh connecting spring 231 is arranged on the inner wall of the twenty-third movable groove, and a stop block 23 corresponding to the second through groove is arranged at one end of the seventh connecting spring 231; a twenty-fourth movable groove is arranged above the twenty-second movable groove, a third connecting rod 351 is arranged in the twenty-fourth movable groove, a fifth pushing plate 35 is arranged at one end of the third connecting rod 351, a fourth movable cavity is arranged on the side wall of the twenty-fourth movable groove, a twenty-fifth movable groove communicated with the sixth movable groove is arranged on the side wall of the fourth movable cavity, a first pushing rod 350 is arranged in the twenty-fifth movable groove in a penetrating manner, a first transmission rod 3501 is arranged in the fourth movable cavity, and the middle part of the first transmission rod 3501 is rotatably connected to the inner wall of the fourth movable cavity; when the cylinder drives the first connecting plate to move upwards, a piston rod of the cylinder abuts against the first push plate, the first push plate drives the whole first movable block to move upwards, the ratchet plate is lifted, the first movable block abuts against the top of the ninth movable groove, and then the first movable block drives the first connecting plate to move upwards together, and at the moment, the fixed pawl is not in contact with the side wall of the crucible; when the first connecting plate moves to the lower part of the baffle, the fixed claw is propped against the side wall of the crucible under the action of the fourth connecting spring, when the first connecting plate continues to ascend, the baffle is propped against the baffle, the first connecting plate cannot continue to ascend, the cylinder pushes the first push plate to move upwards relative to the first movable block, the first connecting rope pulls the first fixed block to move, the first fixed block moves to one end of the sixth movable groove to push the first push rod to move, and at the moment, the first fixed block provides a fixing force for the movable rod; the first push rod pushes the first transmission rod to rotate, the first transmission rod rotates to push the third connecting rod to move, the fifth push plate moves to one side of the second through groove to push the stop block into the twenty-third movable groove, the first connecting plate continues to ascend, the fixed claw is propped against the side wall of the crucible to fix the crucible, the first connecting plate drives the crucible to move upwards together, the crucible is lifted, and the crucible is automatically turned over when moving to the first material placing table.

A third through groove is formed in the side wall of the tenth movable groove, a twenty-eighth movable groove is formed in the inner wall of the ninth movable groove, a second limiting block 38 is arranged in the twenty-eighth movable groove, a chute is formed in the bottom of the second limiting block 38, a fifth movable cavity is formed in the bottom of the twenty-eighth movable groove, a sixth connecting plate 381 is arranged on the second limiting block 38, and a plurality of second reset springs 382 are arranged on the sixth connecting plate 381; the bottom of the baffle 34 is provided with a second connecting block 341, the bottom of the second connecting block 341 is provided with a twenty-sixth movable groove, the baffle 34 is provided with a twenty-seventh movable groove communicated with the twenty-sixth movable groove, the twenty-seventh movable groove is internally provided with a second push rod 345, a third push rod 342 is arranged in the twenty-sixth movable groove in a penetrating way, the third push rod 342 is provided with a third reset spring 343, the top end of the third push rod 342 is also hinged with a fourth connecting rod 346, the other end of the fourth connecting rod 346 is hinged with the second push rod 345, and when the second push rod 345 extends out of the twenty-seventh movable groove, the second limiting block 38 moves into the twenty-eighth movable groove; when the stop block is propped against the baffle, the air cylinder pushes the first push plate to move upwards relative to the first movable block, the piston rod of the air cylinder moves to the top of the tenth movable groove, the first stop block props against the chute at the bottom of the second stop block to push the second stop block to move, when the first fixed block moves to one end of the sixth movable groove, the first stop block moves to the top of the second stop block, the piston rod of the air cylinder is fixed at the current position in the tenth movable groove under the cooperation of the first stop block and the second stop block, the first fixed block is prevented from moving when the material loading block moves, and the safety in the crucible processing process is ensured; when the first connecting plate moves downwards, the second connecting block abuts against the top of the stop block, the stop block pushes the third push rod to move upwards, the third push rod moves to drive the fourth connecting rod to rotate, the fourth connecting rod pushes the second push rod to move, the second limiting block enters into the twenty-eighth movable groove after the second push rod moves, the piston rod of the cylinder moves downwards relative to the first movable block after losing fixation, the first fixed block moves backwards to reset, and resetting of the first fixed block is completed.

A twenty-ninth movable groove is formed in the inner wall of the twenty-second movable groove, a fifth movable cavity is formed in one end of the twenty-ninth movable groove, a sixth movable cavity is formed in one end of the fifth movable cavity, a sixth push plate 340 is arranged in the twenty-ninth movable groove, a fourth reset spring 3401 is arranged on the sixth push plate 340, a fifth connecting rod 3402 is hinged to the sixth push plate 340, a fourth push rod 3403 is hinged to one end of the fifth connecting rod 3402, the fourth push rod 3403 penetrates through the fifth movable cavity, a sixth connecting rod 383 is arranged at the bottom of the sixth connecting plate 381, the sixth connecting rod 383 penetrates through the sixth movable cavity, a seventh connecting rod 384 is arranged at one end of the sixth connecting rod 383, a second transmission rod 385 is arranged in the sixth movable cavity, and the middle of the second transmission rod 385 is rotatably connected to the inner wall of the sixth movable cavity; a cavity is formed in the side wall of the first connecting plate 3, a rubber film 36 is arranged on the side wall of the cavity, a thirty-first movable groove is formed in the inner wall of the cavity, a seventh push plate 37 is arranged in the cavity, a seventh connecting plate 371 matched with the thirty-first movable groove is arranged on the side wall of the seventh push plate 37, a thirty-first movable groove communicated with the thirty-first movable groove is formed in the bottom of the ninth movable groove, a ninth connecting spring 221 is arranged at the bottom of the thirty-first movable groove, a second push block 22 is arranged at the top end of the ninth connecting spring 221, a third connecting rope is arranged on the seventh push plate 37, and one end of the third connecting rope is fixedly connected to the baffle 34; when the first connecting plate moves downwards, the third push rod abuts against the top of the stop block, the third push rod moves to push the second push rod to move, the second push rod stretches into the twenty-ninth movable groove to push the sixth push plate to move, the sixth push plate drives the fifth connecting rod to rotate, the fifth connecting rod pushes the fourth push rod to move, the fourth push rod pushes the second transmission rod to rotate, the second transmission rod pushes the seventh connecting rod to move, the seventh connecting rod drives the second limiting block to move, the second limiting block enters into the twenty-eighth movable groove, the cylinder piston rod moves to the bottom of the ninth movable groove, the first fixed block moves backwards, the first fixed block loses the fixing effect on the movable rod, and at the moment, the crucible is positioned on the loading block, the extrusion force of the fixed claw on the side wall of the crucible is reduced, and the fixed claw can move relative to the crucible; the first limiting block pushes the second pushing block to move downwards, the second pushing block pushes air in the thirty-first movable groove into the thirty-first movable groove, the seventh connecting plate is pushed to move by air pressure, the seventh pushing plate moves towards the rubber film, air in the cavity extrudes the rubber film, the rubber film expands to prop against the inner wall of the first movable cavity, the third connecting rope pulls the baffle to move towards the twenty-second movable groove, the baffle enters the twenty-second movable groove and then passes through the second through groove, the rubber film still props against the inner wall of the first movable cavity at the moment, and the first limiting block props against the bottom of the ninth movable groove to drive the first connecting plate to move downwards, so that the first connecting plate is reset.

A rubber pad structure can be arranged on the end face of the third material placing table, so that the crucible after overturning is prevented from being impacted on the end face of the third material placing table to be damaged.

The drawings of the present invention are only schematic, and the specific dimensions thereof are subject to practical implementation.

Claims

1. A processing device applied to an electric furnace crucible preparation process, wherein the electric furnace crucible preparation process comprises the following steps:

a. preparing a crucible body;

e. drying the crucible body in the step 4;

the second coating and the third coating are different in particle size of the mixed silicon nitride powder;

the method is characterized in that: the processing equipment applied to the electric furnace crucible preparation process comprises a base (1) and a material loading block (2) arranged on the base (1), wherein a first movable groove is formed in the base (1), the first movable groove is of a loop-shaped structure, and the material loading block (2) is arranged in the first movable groove; the device comprises a loading block (2), wherein a first movable cavity is arranged on the loading block (2), a first movable groove is formed in the top of the first movable cavity, a device cavity is formed in the bottom of the first movable cavity, an air cylinder (21) is arranged in the device cavity, a first connecting plate (3) is arranged in the first movable cavity, a second movable groove is formed in the first connecting plate (3), and a clamping jaw assembly is arranged in the second movable groove; a first material placing table (11), a second material placing table (13) and a third material placing table (14) are arranged above the base (1);

A third movable groove is formed in the second material placing table (13), two groups of first rotating rollers (131) are arranged on the inner wall of the third movable groove, and a first driving belt (132) is wound on the two groups of first rotating rollers (131); the clamping jaw assembly comprises a movable rod (31) arranged in the second movable groove and a fixed jaw (312) arranged at the top of the movable rod (31), a fourth movable groove is formed in the top of the movable rod (31), a first connecting shaft (311) is arranged in the fourth movable groove, the fixed jaw (312) is arranged at one end of the first connecting shaft (311), a fifth movable groove is formed in the inner wall of the fixed jaw (312), two groups of second rotating rollers (317) are arranged in the fifth movable groove, and a second driving belt (313) is wound on the two groups of second rotating rollers (317);

a first through groove is formed in the bottom of the second movable groove, a third connecting plate (315) is hinged to the side wall of the movable rod (31), a second connecting plate (316) is hinged to one end of the third connecting plate (315), and one end of the second connecting plate (316) is hinged to the inner wall of the first through groove; a first connecting spring (314) is arranged on the side wall of the movable rod (31), one end of the first connecting spring (314) is fixedly connected to the inner wall of the second movable groove, a sixth movable groove is arranged on the inner wall of the second movable groove, a first fixed block (39) is arranged in the sixth movable groove, a seventh movable groove is arranged on the inner wall of the sixth movable groove, and a ratchet plate (320) is arranged in the seventh movable groove;

A third movable cavity is formed in one end of the sixth movable groove, a second connecting spring (394) is arranged on the side wall of the first fixed block (39), an eighth movable groove is formed in the first fixed block (39), a third connecting spring (392) is arranged on the inner wall of the eighth movable groove, and a second fixed block (391) is arranged at one end of the third connecting spring (392); the top of the first connecting plate (3) is provided with a first connecting block (32), the bottom of the first connecting plate (3) is provided with a ninth movable groove, a piston rod of the air cylinder (21) is arranged in the ninth movable groove in a penetrating manner, a first movable block (33) is arranged in the ninth movable groove, the bottom of the first movable block (33) is provided with a tenth movable groove, the inner wall of the tenth movable groove is provided with an eleventh movable groove, the eleventh movable groove is internally provided with a first push plate (332), the first push plate (332) is provided with a first reset spring (333), the first push plate (332) is provided with a first connecting rope, and one end of the first connecting rope is fixedly connected to the first fixed block (39); the first movable block (33) pushes the ratchet plate (320) to move upwards when moving upwards;

a second movable cavity is formed in one end of the seventh movable groove, a fourth connecting plate is arranged on the side wall of the ratchet plate (320), a second pushing plate (331) is arranged on the side wall of the first movable block (33), the second pushing plate (331) is arranged in the second movable cavity in a penetrating mode, and the fourth connecting plate is arranged above the second pushing plate (331); a first limiting block (211) is arranged on a piston rod of the air cylinder (21); a twelfth movable groove is formed in the inner wall of the sixth movable groove, a thirteenth movable groove corresponding to the twelfth movable groove is formed in the first fixed block (39), a fifth connecting plate (310) is arranged in the twelfth movable groove, a first sliding block (393) is arranged on the second fixed block (391), a first sliding groove matched with the first sliding block (393) is formed in the fifth connecting plate (310), a fourteenth movable groove is formed in the side wall of the first connecting plate (3), a movable plate (330) is arranged in the fourteenth movable groove, a second connecting rope is arranged on the movable plate (330), one end of the second connecting rope is fixedly connected to the fifth connecting plate (310), and a third pushing plate (253) is arranged on the inner wall of the first movable cavity;

A fifteenth movable groove is formed in the inner wall of the first movable cavity, a sixteenth movable groove is formed in the side wall of the fifteenth movable groove, a seventeenth movable groove is formed in the side wall of the sixteenth movable groove, the width of the sixteenth movable groove is smaller than that of the fifteenth movable groove, and an opening is formed in the bottom of the sixteenth movable groove; a second movable block (25) is arranged in the seventeenth movable groove, a fourth connecting spring (251) is arranged on the second movable block (25), a first connecting rod (252) is arranged at one end of the fourth connecting spring (251), the first connecting rod (252) is arranged in the fifteenth movable groove, an eighteenth movable groove is arranged at one end of the first connecting rod (252), a third push plate (253) is rotatably connected to the inner wall of the eighteenth movable groove, a supporting plate is arranged at the bottom of the eighteenth movable groove, and a groove matched with the third push plate (253) is arranged at the top of the fifteenth movable groove; one end of the first connecting rod (252) is provided with a guide rod (254), and the second movable block (25) is provided with a through hole corresponding to the guide rod (254); a nineteenth movable groove is formed in the side wall of the seventeenth movable groove, a twentieth movable groove is formed in the side wall of the nineteenth movable groove, a second connecting rod (261) is arranged in the twentieth movable groove, a fourth push plate (26) is arranged at one end of the second connecting rod (261), and a fifth connecting spring (262) is arranged at the other end of the second connecting rod (261); a twenty-first movable groove communicated with the twenty-first movable groove is formed in the bottom of the first movable cavity, a sixth connecting spring (241) is arranged at the bottom of the twenty-first movable groove, and a first pushing block (24) is arranged at one end of the sixth connecting spring (241);

A second through groove is formed in the side wall of the first connecting plate (3), a twenty-second movable groove is formed in the inner wall of the second through groove, an eighth connecting spring (344) is arranged in the twenty-second movable groove, a baffle (34) is arranged at one end of the eighth connecting spring (344), a twenty-third movable groove is formed in the inner wall of the first movable cavity, a seventh connecting spring (231) is arranged on the inner wall of the twenty-third movable groove, and a stop block (23) corresponding to the second through groove is arranged at one end of the seventh connecting spring (231); a twenty-fourth movable groove is formed above the twenty-second movable groove, a third connecting rod (351) is arranged in the twenty-fourth movable groove, a fifth pushing plate (35) is arranged at one end of the third connecting rod (351), a fourth movable cavity is formed in the side wall of the twenty-fourth movable groove, a twenty-fifth movable groove communicated with the sixth movable groove is formed in the side wall of the fourth movable cavity, a first pushing rod (350) is arranged in the twenty-fifth movable groove in a penetrating mode, a first transmission rod (3501) is arranged in the fourth movable cavity, and the middle of the first transmission rod (3501) is rotatably connected to the inner wall of the fourth movable cavity;

a third through groove is formed in the side wall of the tenth movable groove, a twenty-eighth movable groove is formed in the inner wall of the ninth movable groove, a second limiting block (38) is arranged in the twenty-eighth movable groove, a chute is formed in the bottom of the second limiting block (38), a fifth movable cavity is formed in the bottom of the twenty-eighth movable groove, a sixth connecting plate (381) is arranged on the second limiting block (38), and a plurality of second reset springs (382) are arranged on the sixth connecting plate (381); the bottom of the baffle (34) is provided with a second connecting block (341), the bottom of the second connecting block (341) is provided with a twenty-sixth movable groove, the baffle (34) is provided with a twenty-seventh movable groove communicated with the twenty-sixth movable groove, a second push rod (345) is arranged in the twenty-seventh movable groove, a third push rod (342) is arranged in the twenty-sixth movable groove in a penetrating mode, a third reset spring (343) is arranged on the third push rod (342), the top end of the third push rod (342) is further hinged with a fourth connecting rod (346), the other end of the fourth connecting rod (346) is hinged to the second push rod (345), and when the second push rod (345) stretches out from the twenty-seventh movable groove, the second limiting block (38) moves into the twenty-eighth movable groove;

A twenty-ninth movable groove is formed in the inner wall of the twenty-second movable groove, a fifth movable cavity is formed in one end of the twenty-ninth movable groove, a sixth movable cavity is formed in one end of the fifth movable cavity, a sixth pushing plate (340) is arranged in the twenty-ninth movable groove, a fifth connecting rod (3402) is hinged to the sixth pushing plate (340), a fourth pushing rod (3403) is hinged to one end of the fifth connecting rod (3402), the fourth pushing rod (3403) penetrates through the fifth movable cavity, a sixth connecting rod (383) is arranged at the bottom of the sixth connecting plate (381), a seventh connecting rod (384) is arranged at one end of the sixth connecting rod (383), a second transmission rod (385) is arranged in the sixth movable cavity, and the middle of the second transmission rod (385) is rotatably connected to the inner wall of the sixth movable cavity; the novel movable connecting plate is characterized in that a cavity is formed in the side wall of the first connecting plate (3), a rubber film (36) is arranged on the side wall of the cavity, a thirty-first movable groove is formed in the inner wall of the cavity, a seventh pushing plate (37) is arranged in the cavity, a seventh connecting plate (371) matched with the thirty-first movable groove is arranged on the side wall of the seventh pushing plate (37), a thirty-first movable groove communicated with the thirty-first movable groove is formed in the bottom of the ninth movable groove, a ninth connecting spring (221) is arranged at the bottom of the thirty-first movable groove, a second pushing block (22) is arranged at the top end of the ninth connecting spring (221), a third connecting rope is arranged on the seventh pushing plate (37), and one end of the third connecting rope is fixedly connected to the baffle (34).