CN118492271A - Combined casting device for ceramic core wax parts with top cover structure - Google Patents

Abstract

The invention relates to the technical field of casting, and particularly discloses a combined casting device for ceramic core wax pieces with top cover plate structures, which comprises: the ceramic core assembly comprises an inner cavity ceramic core, a cover plate ceramic core and two extension conveying plates, wherein the two extension conveying plates are respectively arranged at the front end and the rear end of the inner cavity ceramic core, the cover plate is a part, the inner cavity and the through hole are a part, and the method and the cover plate-inner cavity integrated ceramic core molding and the inner cavity ceramic core molding are all investment casting of complex inner cavity castings with top cover plate structures, and the difference is that the integrated ceramic core is divided into two parts for combined use, so that the core breaking rate and the ceramic core production difficulty are reduced, the slag inclusion problem of the top cover plate can be effectively solved, and the process cost is lower.

Description

Combined casting device for ceramic core wax parts with top cover structure

Technical Field

The invention relates to the field of casting technology, and more particularly to a combined casting device for ceramic core wax parts with a top cover plate structure.

Background Art

Investment casting is mainly used in the production of steam turbines, gas turbines and other instrument components with complex configurations due to its advantages of high dimensional accuracy, no parting surface, and a wide range of applicable alloys. When using the investment casting method to produce hollow blades with a top cover plate structure and a complex inner cavity shape (as shown in Figure 12), due to the complex structure of the casting cavity, or the casting cavity is larger than the cavity mouth, it is impossible to make a wax mold with a wax mold, so the cover plate-inner cavity integrated ceramic core molding method, or the inner cavity ceramic core molding and cover plate mold shell molding method are usually used;

However, both the cover plate-inner cavity integrated ceramic core molding and the inner cavity ceramic core molding have certain problems. The cover plate-inner cavity integrated ceramic core molding (as shown in Figure 13): The advantage of this molding method is that the surface quality of the casting is good and the torsion angle between the cover plate and the inner cavity is small, but this method has strict requirements on the strength and size of the ceramic core. It is very easy to cause core breakage during the wax mold pressing and pouring process, which puts higher requirements on the design and production of the ceramic core; Inner cavity ceramic core molding, cover plate mold shell molding: This method has lower requirements on the ceramic core, but has more stringent requirements on the shell making, especially at the top cover plate structure, which is very easy to form slag inclusions, resulting in scrapped castings. Therefore, we designed a combined casting device for ceramic core wax parts with a top cover plate structure to solve the above problems.

Summary of the invention

The present invention provides a combined casting device for ceramic core wax parts with a top cover plate structure, which solves the technical problems in the prior art that the cover plate-inner cavity integrated ceramic core molding method has strict requirements on the strength and size of the ceramic core, and is very likely to cause core breakage during the wax mold pressing and pouring process. The inner cavity ceramic core molding and cover plate mold shell molding methods have strict requirements on shell making, and slag inclusions are very likely to form at the top cover plate structure, resulting in the scrapping of castings.

According to one aspect of the present invention, a combined casting device for ceramic core wax parts with a top cover plate structure is provided, comprising: a base and a ceramic core assembly, two support plates are fixedly installed on the top of the base, two conveyor belts are arranged between the two support plates, and the two conveyor belts are used to convey the ceramic core assembly, the ceramic core assembly comprises an inner cavity ceramic core, a cover plate ceramic core and two extended conveyor plates, the two extended conveyor plates are respectively arranged at the front and rear ends of the inner cavity ceramic core, and a mold opening and closing mechanism, a wax injection mechanism and a top plate splicing mechanism are arranged between the two support plates;

The mold opening and closing mechanism includes two guide grooves, which are respectively provided on two support plates, a same screw rod is rotatably installed between the inner walls on the left and right sides of the guide groove, a threaded sleeve is threadedly connected to the outer side of the screw rod, and a limiting guide rail is fixedly installed on the side close to the two threaded sleeves, a T-shaped guide groove is provided on the limiting guide rail, an L-shaped sliding rod is slidably connected in the T-shaped guide groove, a same lower mold is fixedly installed on the top of the two L-shaped sliding rods, mounting rods are fixedly installed on the front and rear sides of the lower mold, and a same upper mold is fixedly installed between the two mounting rods, an adjusting rod is fixedly installed on the side away from the two L-shaped sliding rods, an adjusting groove is provided on the side close to the two support plates, and the adjusting rod is slidably connected in the adjusting groove.

Furthermore: a driving motor is fixedly installed on the left side of the two support plates, the left end of the screw rod passes through the guide groove and is fixedly connected to the output shaft of the driving motor, the two limit guide rails are symmetrically arranged, and the two L-shaped sliding rods are symmetrically arranged. The trajectory of the adjustment groove gradually rises from left to right, then tends to be stable and finally decreases. The upper mold is used in conjunction with the lower mold, and a wax injection port is opened on the top of the upper mold.

Furthermore: the wax injection mechanism includes a sliding frame, which is fixedly mounted on two threaded sleeves, two springs are fixedly mounted on the top of the sliding frame, the same triangular block is fixedly mounted on the top of the two springs, a wax injection head is fixedly mounted on the bottom of the triangular block, the bottom end of the wax injection head passes through the top inner wall of the sliding frame and is slidably connected thereto, and a limiting sleeve is fixedly mounted on the outer side of the wax injection head.

Furthermore: a wax storage tank is fixedly installed on the top of the sliding frame, a delivery pipe is fixedly installed on the front side of the wax storage tank, the front end of the delivery pipe is fixedly connected to the wax injection head, and a wax injection pump is arranged on the delivery pipe.

Furthermore: an adjustment frame is fixedly installed on the top of the base, an adjustment plate is fixedly installed on the adjustment frame, two wedge-shaped surfaces are opened at the bottom of the adjustment plate, the two wedge-shaped surfaces are symmetrically arranged, the adjustment plate is used in conjunction with the triangular block, and the distance between the adjustment frame and the support plate is greater than the distance between the sliding frame and the support plate.

Furthermore: the top plate splicing mechanism includes two fixed cutting plates, which are respectively fixedly installed on the side close to the two support plates, and the two fixed cutting plates are symmetrically arranged, and L-shaped plates are fixedly installed on the tops of the two fixed cutting plates, and pneumatic cutters are fixedly installed on the side close to the two L-shaped plates, and the output end of the pneumatic cutter is adapted to the fixed cutting plate.

Furthermore: a splicing table is fixedly installed on the top of the base, and a receiving groove is opened on the top of the splicing table. The contour of the receiving groove matches the contour of the wax model after the wax injection and solidification. The tops of the two support plates are fixedly installed with the same mounting frame, and the top of the mounting frame is fixedly installed with a cylinder. The output end of the cylinder passes through the top inner wall of the mounting frame and extends to the bottom thereof.

Furthermore: a support platform is fixedly installed on the top of the support plate at the rear side, an electric push rod is fixedly installed on the rear side of the support platform, and the front end of the electric push rod passes through the rear inner wall of the support platform and extends to the front side thereof.

Furthermore: a material pushing port is provided on the support plate at the rear side, a material pushing platform is provided on the top of the support platform, and the material pushing platform passes through the material pushing port and extends to the top of the splicing platform.

According to another aspect of the present invention, a method for using a combined casting device of a ceramic core wax part with a top cover plate structure is provided, comprising:

Step 1: First, the extended conveyor plate and the inner cavity ceramic core are conveyed to the right by two conveyor belts. When the inner cavity ceramic core is conveyed to between the upper mold and the lower mold, the two drive motors are started. The output shaft of the drive motor rotates to drive the screw to rotate, thereby driving the threaded sleeve connected to the screw thread to move to the right under the limit of the guide groove, and then driving the upper mold and the lower mold to move to the right synchronously with the inner cavity ceramic core, so that the inner cavity ceramic core is always between the upper mold and the lower mold. As the threaded sleeve continues to move to the right, the adjusting rod also slides in the adjusting groove. When the adjusting rod slides to the rising section of the adjusting groove, the adjusting rod will gradually move upward, driving the L-shaped slide bar to move upward in the limiting guide rail, thereby driving the lower mold to move upward and gradually approach the upper mold. When the adjusting rod slides to the stable section of the adjusting groove, the lower mold and the upper mold are molded together.

Step 2: After the lower mold and the upper mold are closed, they continue to move to the right, and the sliding bracket will also move to the right with the threaded sleeve. When the triangular block passes through the adjustment plate, it will first pass through the wedge-shaped surface on the left. At this time, the triangular block will gradually move downward and compress the two springs, driving the wax injection head to slide downward and insert into the wax injection port on the top of the upper mold. Then, after passing the wedge-shaped surface on the left, the triangular block will abut against the bottom of the adjustment plate, and the wax injection head will remain inserted. At this time, start the wax injection pump to allow the delivery pipe to extract the liquid wax in the wax storage tank, and then inject it into the upper and lower molds through the wax injection head. After the injection is completed, the liquid wax gradually cools and solidifies during the movement to the right to form a wax mold (as shown in Figure 5).

Step 3: When the triangle block moves to the wedge-shaped surface of the adjustment plate on the right, the two springs will gradually release their elastic potential energy as the triangle block moves, driving the triangle block to reset, and the wax injection head will gradually be pulled out from the wax injection port at the top of the upper mold. At the same time, the adjustment rod also slides into the descending section of the adjustment groove. At this time, the lower mold gradually begins to move downward to open the mold. As the lower mold gradually moves downward, the two extended conveyor plates will fall on the top of the conveyor belt.

Step 4: At this time, control the two drive motors to drive the screw to reverse, reset the mold opening and closing mechanism and the wax injection head, then start the pneumatic cutter, the output end of the pneumatic cutter moves downward, cooperates with the fixed cutting plate, and cuts the two extended conveying plates from the inner cavity ceramic core. At this time, the wax mold loses its support and falls into the receiving groove that matches its contour, and then start the cylinder to extend the output end of the cylinder to press the wax mold into the receiving groove, then start the electric push rod, so that the output end of the electric push rod pushes the cover plate ceramic core on the top of the push table forward, so that the front cover plate ceramic core is inserted into the splicing hole on the rear side of the wax mold that matches it, and the combined casting of the ceramic core wax mold can be completed (as shown in Figures 3 and 6).

The beneficial effect of the present invention is that: in actual use, the present invention divides the ceramic core into two parts, the cover plate is one part, and the inner cavity and the through hole are another part. This method and the cover plate-inner cavity integrated ceramic core molding and the inner cavity ceramic core molding all belong to the investment casting of complex inner cavity castings with a top cover plate structure. The difference is that the integrated ceramic core is divided into two parts and used in combination, which reduces the core breakage rate and the difficulty of ceramic core production, can effectively solve the slag inclusion problem of the top cover plate, and has a low process cost;

By setting up a mold opening and closing mechanism, a wax injection mechanism and a top plate splicing mechanism, the combined casting of the inner cavity ceramic core and the cover plate ceramic core can be carried out continuously, and the transportation process of the inner cavity ceramic core is utilized. A series of operations such as mold closing, wax injection and cooling are realized during the transportation of the inner cavity ceramic core, thereby greatly shortening the wax mold forming time, improving work efficiency, and greatly reducing the difficulty of casting production. It can be promoted and used in the production of such castings with a top cover plate structure and a complex inner cavity.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a front perspective structure of the present invention;

FIG2 is a rear perspective structural schematic diagram of the present invention;

FIG3 is a schematic diagram of a three-dimensional structure of a portion of an adjustment tank of the present invention;

FIG4 is a schematic diagram of a three-dimensional structure of a triangular block portion of the present invention;

FIG5 is a schematic diagram of the three-dimensional structure of the lower mold part of the present invention;

FIG6 is a schematic diagram of a three-dimensional structure of a splicing table portion of the present invention;

FIG7 is a schematic diagram of a three-dimensional structure of the adjusting rod portion of the present invention;

FIG8 is a schematic diagram of the three-dimensional structure of the ceramic core portion of the cover plate of the present invention;

9 is a sectional view of a three-dimensional structure of a limiting guide rail portion of the present invention;

10 is a schematic diagram of the three-dimensional structure of the fixed cutting plate portion of the present invention;

FIG11 is a schematic diagram of the three-dimensional structure of the inner cavity ceramic core of the present invention;

FIG12 is a schematic diagram of an existing combined ceramic core;

FIG. 13 is a schematic diagram of an existing cover plate-inner cavity integrated ceramic core.

In the figure:

1. Base; 2. Support plate; 3. Conveyor belt; 8. Push port;

4. Mold opening and closing mechanism; 401. guide groove; 402. screw rod; 403. threaded sleeve; 404. limit guide rail; 405. T-shaped guide groove; 406. L-shaped slide bar; 407. lower mold; 408. mounting rod; 409. upper mold; 410. adjustment rod; 411. adjustment groove;

5. Wax injection mechanism; 501. Sliding frame; 502. Spring; 503. Triangular block; 504. Wax injection head; 505. Limit sleeve; 506. Wax storage tank; 507. Delivery pipe; 508. Wax injection pump; 509. Adjustment frame; 510. Adjustment plate;

6. Top plate splicing mechanism; 601. Fixed cutting plate; 602. L-shaped plate; 603. Pneumatic cutter; 604. Splicing table; 605. Mounting frame; 606. Cylinder; 607. Support table; 608. Electric push rod; 609. Pushing table;

7. Ceramic core assembly; 701. Inner cavity ceramic core; 702. Extended conveying plate; 703. Cover plate ceramic core.

DETAILED DESCRIPTION

The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is to enable those skilled in the art to better understand and implement the subject matter described herein. The functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the present specification. Each example may omit, replace or add various processes or components as required. In addition, the features described relative to some examples may also be combined in other examples.

Referring to FIGS. 1, 3, 5, 7, 9 and 11, in this embodiment, a combined casting device for ceramic core wax parts with a top cover plate structure is proposed, comprising: a base 1 and a ceramic core assembly 7, two support plates 2 are fixedly installed on the top of the base 1, two conveyor belts 3 are arranged between the two support plates 2, and the two conveyor belts 3 are used to convey the ceramic core assembly 7, the ceramic core assembly 7 comprises an inner cavity ceramic core 701, a cover plate ceramic core 703 and two extended conveyor plates 702, the two extended conveyor plates 702 are respectively arranged at the front and rear ends of the inner cavity ceramic core 701, and a mold opening and closing mechanism 4, a wax injection mechanism 5 and a top plate splicing mechanism 6 are arranged between the two support plates 2;

The mold opening and closing mechanism 4 includes two guide grooves 401, and the two guide grooves 401 are respectively provided on the two support plates 2. The same screw rod 402 is rotatably installed between the inner walls on the left and right sides of the guide groove 401. The outer side of the screw rod 402 is threadedly connected with a threaded sleeve 403. The two threaded sleeves 403 are fixedly installed with a limit guide rail 404 on the side close to each other. The limit guide rail 404 is provided with a T-shaped guide groove 405, and an L-shaped slide bar 406 is slidably connected in the T-shaped guide groove 405. The top of the two L-shaped slide bars 406 is fixedly installed with the same lower mold 407, and the front and rear sides of the lower mold 407 are fixedly installed with mounting rods 408. The same upper mold 409 is fixedly installed between the two mounting rods 408. The two L-shaped slide bars 406 are fixedly installed with an adjusting rod 410 on the side away from each other. The two support plates 2 are provided with an adjusting groove 411 on the side close to each other, and the adjusting rod 410 is slidably connected in the adjusting groove 411.

Referring to Figures 1, 2 and 5, in this embodiment, a drive motor is fixedly installed on the left side of the two support plates 2, the left end of the screw rod 402 passes through the guide groove 401 and is fixedly connected to the output shaft of the drive motor, the two limit guide rails 404 are symmetrically arranged, the two L-shaped slide bars 406 are symmetrically arranged, the trajectory of the adjustment groove 411 gradually rises from left to right, then tends to be stable and finally decreases, the upper mold 409 is used in conjunction with the lower mold 407, and a wax injection port is opened on the top of the upper mold 409.

Referring to Figure 4, in this embodiment, the wax injection mechanism 5 includes a sliding frame 501, which is fixedly mounted on two threaded sleeves 403. Two springs 502 are fixedly mounted on the top of the sliding frame 501. The tops of the two springs 502 are fixedly mounted with the same triangular block 503. The bottom of the triangular block 503 is fixedly mounted with a wax injection head 504. The bottom end of the wax injection head 504 passes through the top inner wall of the sliding frame 501 and is slidably connected thereto. A limiting sleeve 505 is fixedly mounted on the outer side of the wax injection head 504.

Referring to Figure 4, in this embodiment, a wax storage tank 506 is fixedly installed on the top of the sliding frame 501, a delivery pipe 507 is fixedly installed on the front side of the wax storage tank 506, the front end of the delivery pipe 507 is fixedly connected to the wax injection head 504, and a wax injection pump 508 is provided on the delivery pipe 507.

1 and 4 , in the present embodiment, an adjusting frame 509 is fixedly mounted on the top of the base 1, an adjusting plate 510 is fixedly mounted on the adjusting frame 509, two wedge-shaped surfaces are provided at the bottom of the adjusting plate 510, the two wedge-shaped surfaces are symmetrically arranged, the adjusting plate 510 is used in conjunction with the triangular block 503, and the distance between the adjusting frame 509 and the supporting plate 2 is greater than the distance between the sliding frame 501 and the supporting plate 2.

6 and 10 , in the present embodiment, the top plate splicing mechanism 6 comprises two fixed cutting plates 601, which are respectively fixedly mounted on the adjacent sides of the two support plates 2, and the two fixed cutting plates 601 are symmetrically arranged, and an L-shaped plate 602 is fixedly mounted on the top of the two fixed cutting plates 601, and a pneumatic cutter 603 is fixedly mounted on the adjacent sides of the two L-shaped plates 602, and the output end of the pneumatic cutter 603 is adapted to the fixed cutting plate 601.

Referring to Figures 6 and 8, in this embodiment, a splicing table 604 is fixedly installed on the top of the base 1, and a receiving groove is opened on the top of the splicing table 604. The contour of the receiving groove coincides with the contour of the wax model after the wax injection and solidification. The tops of the two support plates 2 are fixedly installed with the same mounting frame 605, and the top of the mounting frame 605 is fixedly installed with a cylinder 606. The output end of the cylinder 606 passes through the top inner wall of the mounting frame 605 and extends to the bottom thereof.

6 and 8 , in this embodiment, a support platform 607 is fixedly installed on the top of the support plate 2 located on the rear side, and an electric push rod 608 is fixedly installed on the rear side of the support platform 607. The front end of the electric push rod 608 passes through the rear inner wall of the support platform 607 and extends to the front side thereof.

5 , 6 and 8 , in this embodiment, a material pushing port 8 is provided on the support plate 2 at the rear side, a material pushing platform 609 is provided on the top of the support platform 607 , and the material pushing platform 609 passes through the material pushing port 8 and extends to the top of the splicing platform 604 .

A method for using a combined casting device for a ceramic core wax part with a top cover plate structure, comprising:

Step 1: First, the extended conveying plate 702 and the inner cavity ceramic core 701 are conveyed to the right by two conveyor belts 3. When the inner cavity ceramic core 701 is conveyed to between the upper mold 409 and the lower mold 407, the two driving motors are started. The output shaft of the driving motor rotates to drive the screw rod 402 to rotate, thereby driving the threaded sleeve 403 threadedly connected with the screw rod 402 to move to the right under the limit of the guide groove 401, and then driving the upper mold 409 and the lower mold 407 to move to the right synchronously with the inner cavity ceramic core 701, so that the inner cavity ceramic core 701 is always in the upper mold 409. Between the mold 409 and the lower mold 407, as the threaded sleeve 403 continues to move to the right, the adjusting rod 410 also slides in the adjusting groove 411. When the adjusting rod 410 slides to the rising section of the adjusting groove 411, the adjusting rod 410 will gradually move upward, driving the L-shaped slide bar 406 to move upward in the limiting guide rail 404, thereby driving the lower mold 407 to move upward and gradually approach the upper mold 409. When the adjusting rod 410 slides to the stable section of the adjusting groove 411, the lower mold 407 and the upper mold 409 are molded together.

Step 2: After the lower mold 407 and the upper mold 409 are closed, they continue to move to the right, and the sliding bracket will also move to the right with the threaded sleeve 403. When the triangular block 503 passes through the adjusting plate 510, it will first pass through the wedge-shaped surface on the left. At this time, the triangular block 503 will gradually move downward and compress the two springs 502, driving the wax injection head 504 to slide downward and insert into the wax injection port at the top of the upper mold 409. Then, after passing the wedge-shaped surface on the left, the triangular block 503 will abut against the bottom of the adjusting plate 510, and the wax injection head 504 remains inserted. At this time, the wax injection pump 508 is started to make the delivery pipe 507 draw out the liquid wax in the wax storage tank 506, and then inject it into the upper mold 409 and the lower mold 407 through the wax injection head 504. After the injection is completed, the liquid wax gradually cools and solidifies to form a wax mold during the movement to the right.

Step three: When the triangular block 503 moves to the wedge-shaped surface of the adjustment plate 510 on the right side, the two springs 502 will gradually release their elastic potential energy as the triangular block 503 moves, driving the triangular block 503 to reset, and the wax injection head 504 will gradually be pulled out from the wax injection port at the top of the upper mold 409. At the same time, the adjustment rod 410 also slides into the descending section of the adjustment groove 411. At this time, the lower mold 407 gradually begins to move downward to open the mold. As the lower mold 407 gradually moves downward, the two extended conveyor plates 702 will fall on the top of the conveyor belt 3.

Step 4: At this time, the two driving motors are controlled to drive the screw 402 to reverse, and the mold opening and closing mechanism 4 and the wax injection head 504 are reset. Then, the pneumatic cutter 603 is started, and the output end of the pneumatic cutter 603 moves downward to cooperate with the fixed cutting plate 601 to cut the two extended conveying plates 702 from the inner cavity ceramic core 701. At this time, the wax mold loses its support and falls into the receiving groove that matches its contour. Then, the cylinder 606 is started to extend the output end of the cylinder 606 to press the wax mold tightly into the receiving groove. Then, the electric push rod 608 is started so that the output end of the electric push rod 608 pushes the cover plate ceramic core 703 on the top of the pushing platform 609 forward, so that the front cover plate ceramic core 703 is inserted into the splicing hole on the rear side of the wax mold that matches it, and the combined casting of the ceramic core wax mold can be completed.

Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims (10)

1. Take combination casting device of ceramic core wax component of top apron structure, its characterized in that includes: the ceramic core comprises a base (1) and a ceramic core component (7), wherein two supporting plates (2) are fixedly arranged at the top of the base (1), two conveying belts (3) are arranged between the two supporting plates (2), the two conveying belts (3) are used for conveying the ceramic core component (7), the ceramic core component (7) comprises an inner cavity ceramic core (701), a cover plate ceramic core (703) and two extension conveying plates (702), the two extension conveying plates (702) are respectively arranged at the front end and the rear end of the inner cavity ceramic core (701), and an opening and closing die mechanism (4), a wax injection mechanism (5) and a top plate splicing mechanism (6) are arranged between the two supporting plates (2);

The mold opening and closing mechanism (4) comprises two guide grooves (401), the two guide grooves (401) are respectively formed in two support plates (2), the same screw rod (402) is rotatably mounted between the inner walls of the left side and the right side of the guide grooves (401), the outer side of the screw rod (402) is in threaded connection with a threaded sleeve (403), a limit guide rail (404) is fixedly mounted on one side, close to the other side, of the two threaded sleeves (403), a T-shaped guide groove (405) is formed in the limit guide rail (404), an L-shaped slide bar (406) is connected in the T-shaped guide groove (405) in a sliding manner, the top ends of the two L-shaped slide bars (406) are fixedly mounted with the same lower mold (407), the front side and the rear side of the lower mold (407) are fixedly mounted with mounting rods (408), the same upper mold (409) is fixedly mounted between the two mounting rods (408), an adjusting rod (410) is fixedly mounted on one side, close to the other side, and the two support plates (2) are fixedly mounted with an adjusting groove (411), and the adjusting rod (411) is slidingly connected in the adjusting groove (411).

2. The combined casting device for ceramic core wax parts with top cover plate structures according to claim 1, wherein driving motors are fixedly installed on the left sides of two support plates (2), the left ends of screw rods (402) penetrate through guide grooves (401) and are fixedly connected with output shafts of the driving motors, two limit guide rails (404) are symmetrically arranged, two L-shaped slide rods (406) are symmetrically arranged, the track of an adjusting groove (411) gradually rises from left to right and then tends to steadily descend at last, an upper die (409) is matched with a lower die (407), and a wax injection port is formed in the top of the upper die (409).

3. The combined casting device for ceramic core wax pieces with top cover plate structures according to claim 1, wherein the wax injection mechanism (5) comprises a sliding frame (501), the sliding frame (501) is fixedly installed on two threaded sleeves (403), two springs (502) are fixedly installed at the top of the sliding frame (501), the same triangular block (503) is fixedly installed at the top ends of the two springs (502), a wax injection head (504) is fixedly installed at the bottom of the triangular block (503), and the bottom end of the wax injection head (504) penetrates through the inner wall of the top of the sliding frame (501) and is in sliding connection with the inner wall of the top of the sliding frame, and a limit sleeve (505) is fixedly installed at the outer side of the wax injection head (504).

4. The combined casting device for ceramic core wax pieces with top cover plate structures according to claim 3, wherein a wax storage tank (506) is fixedly arranged at the top of the sliding frame (501), a conveying pipe (507) is fixedly arranged at the front side of the wax storage tank (506), the front end of the conveying pipe (507) is fixedly connected with a wax injection head (504), and a wax injection pump (508) is arranged on the conveying pipe (507).

5. The combined casting device with the top cover plate structure for ceramic core wax pieces according to claim 3, wherein an adjusting frame (509) is fixedly arranged at the top of the base (1), an adjusting plate (510) is fixedly arranged on the adjusting frame (509), two wedge-shaped surfaces are arranged at the bottom of the adjusting plate (510) in a symmetrical mode, the adjusting plate (510) is matched with the triangular block (503) for use, and the distance between the adjusting frame (509) and the supporting plate (2) is larger than that between the sliding frame (501) and the supporting plate (2).

6. The combined casting device with the top cover plate structure for ceramic core wax pieces according to claim 1, wherein the top plate splicing mechanism (6) comprises two fixed cutting plates (601), the two fixed cutting plates (601) are respectively and fixedly arranged on one sides of the two support plates (2) which are close to each other, the two fixed cutting plates (601) are symmetrically arranged, the tops of the two fixed cutting plates (601) are fixedly provided with L-shaped plates (602), the two sides of the two L-shaped plates (602) which are close to each other are fixedly provided with pneumatic cutters (603), and the output ends of the pneumatic cutters (603) are matched with the fixed cutting plates (601).

7. The combined casting device for ceramic core wax pieces with top cover plate structures according to claim 1, wherein a splicing table (604) is fixedly arranged at the top of the base (1), a containing groove is formed in the top of the splicing table (604), the outline of the containing groove is matched with the outline of a wax pattern solidified by wax injection, the top of two supporting plates (2) is fixedly provided with the same mounting frame (605), the top of the mounting frame (605) is fixedly provided with an air cylinder (606), and the output end of the air cylinder (606) penetrates through the top inner wall of the mounting frame (605) and extends to the lower side of the top inner wall.

8. The combined casting device for ceramic core wax pieces with top cover plate structures according to claim 1, wherein a supporting table (607) is fixedly arranged at the top of a supporting plate (2) positioned at the rear side, an electric push rod (608) is fixedly arranged at the rear side of the supporting table (607), and the front end of the electric push rod (608) penetrates through the rear side inner wall of the supporting table (607) and extends to the front side of the supporting table.

9. The combined casting device for ceramic core wax pieces with the top cover plate structure according to claim 8, wherein a pushing opening (8) is formed in a support plate (2) positioned at the rear side, a pushing table (609) is arranged at the top of the support table (607), and the pushing table (609) penetrates through the pushing opening (8) and extends to the top of the splicing table (604).

10. A method of using a ceramic core wax component combination casting device with a top cover plate structure employing the combination casting device of any one of claims 1-9, comprising:

Step one: firstly, an extension conveying plate (702) and an inner cavity ceramic core (701) are conveyed rightward through two conveying belts (3), when the inner cavity ceramic core (701) is conveyed between an upper die (409) and a lower die (407), two driving motors are started, an output shaft of each driving motor rotates to drive a screw rod (402) to rotate, so that a threaded sleeve (403) in threaded connection with the screw rod (402) is driven to move rightward under the limit of a guide groove (401), the upper die (409) and the lower die (407) are driven to synchronously move rightward along with the inner cavity ceramic core (701), the inner cavity ceramic core (701) is always positioned between the upper die (409) and the lower die (407), an adjusting rod (410) also slides in an adjusting groove (411) along with the continuous rightward movement of the threaded sleeve (403), and when the adjusting rod (410) slides to the lifting section of the adjusting groove (411), the adjusting rod (410) is driven to move upward gradually, so that the lower die (407) is driven to move upward and gradually approach the upper die (409) under the limit of the limit guide rail (404), and the adjusting rod (410) is smoothly slid to the upper die (409) at the moment.

Step two: the lower die (407) and the upper die (409) are clamped and then move rightwards, the sliding support moves rightwards along with the threaded sleeve (403), when the triangular block (503) passes through the adjusting plate (510), the triangular block (503) firstly passes through the wedge-shaped surface positioned at the left side, the triangular block (503) gradually moves downwards at the moment, the two springs (502) are compressed to drive the wax injection head (504) to slide downwards and insert into the wax injection opening at the top of the upper die (409), then the triangular block (503) abuts against the bottom of the adjusting plate (510) after passing through the wedge-shaped surface positioned at the left side, the wax injection head (504) keeps in an inserted state, the wax injection pump (508) is started at the moment, the conveying pipe (507) pumps out the liquid wax in the wax storage tank (506), and then the liquid wax is injected into the upper die (409) and the lower die (407) through the wax injection head (504), and is gradually cooled and solidified in the rightward moving process after the injection is completed, so that the wax is formed;

Step three: when the triangular block (503) moves to a wedge-shaped surface of the adjusting plate (510) positioned on the right side, the two springs (502) gradually release elastic potential energy along with the movement of the triangular block (503) to drive the triangular block (503) to reset, the wax injection head (504) is gradually pulled out of a wax injection port at the top of the upper die (409), meanwhile, the adjusting rod (410) also slides into a descending section of the adjusting groove (411), at the moment, the lower die (407) gradually starts to move downwards to open the die, and along with the gradual downward movement of the lower die (407), the two extension conveying plates (702) can fall on the top of the conveying belt (3);

Step four: at this time, two driving motors are controlled to drive the screw rods (402) to rotate reversely, the mold opening and closing mechanism (4) and the wax injection head (504) are reset, then, the pneumatic cutter (603) is started, the output end of the pneumatic cutter (603) moves downwards and is matched with the fixed cutting plate (601), two extension conveying plates (702) are cut off from the inner cavity ceramic core (701), at this time, the wax mold loses support and falls into a containing groove matched with the wax mold in contour, then, the air cylinder (606) is started, the output end of the air cylinder (606) extends, the wax mold is tightly pressed in the containing groove, then, the electric push rod (608) is started, the cover plate ceramic core (703) at the top of the pushing table (609) is pushed forwards by the output end of the electric push rod (608), and the cover plate ceramic core (703) at the forefront side is inserted into a splicing hole matched with the wax mold, so that the combined casting of the ceramic core can be completed.