Investment casting device and method thereof

Abstract

The present invention relates to the technical field of investment casting, and specifically to a precision investment casting device, comprising a base, two support frames symmetrically and fixedly installed on the top of the base, a shaking assembly is arranged between the two support frames, a collecting box is arranged on the top of the two support frames, a filtering and clearing assembly is arranged inside the collecting box, and two limit covers are symmetrically and laterally slidably installed on the outside of the top of the collecting box. Through the coordinated use of a moving assembly, a partition assembly, a limit adjustment assembly and a plurality of temperature-controlled heaters, a plurality of heating areas can be isolated and divided on the outside of the special-shaped investment mold, so that different parts can be heated at different temperatures according to the specific shape of the special-shaped investment mold and the distribution of the wax pattern, so that the wax pattern can be quickly and evenly melted and discharged from the mold shell, thereby improving the shelling efficiency, shortening the shelling time, and ensuring better shelling quality.

Description

Technical Field

[0001] The present invention relates to the technical field of investment casting, in particular to an investment precision casting device and a method thereof. Background Art

[0002] Investment casting, also known as dewax casting or lost wax casting, can produce precise and complex castings that are close to the final shape of the product.

[0003] In investment casting, a fusible mold is first formed using a wax injection molding machine. Multiple layers of refractory material are then applied to the mold, which then dries and hardens to form a shell. The shell is then fired to strengthen it. Molten metal is then poured into the shell, where it cools and solidifies before being removed from the shell to create the desired metal component.

[0004] However, when the existing investment casting device performs dewaxing operations on some special-shaped investment patterns, due to their complex shapes, the distribution of the wax pattern in the mold shell is also relatively complex. The complex shape of the special-shaped investment pattern makes the heat conduction path and speed in the mold shell inconsistent, and the heat conduction in the complex winding parts is relatively difficult. A higher temperature is required to fully melt the wax and flow out. The heat conduction in the parts with a relatively gentle and vertical design is relatively easy, and the dewaxing can be completed at a lower temperature. If the temperature is too high, it may cause local overheating of the mold shell, affecting the quality of the mold shell. The traditional heating dewaxing device cannot reasonably adjust the heating power of each area according to the shape and structure of the mold shell, so that the mold shell cannot be heated evenly during the shelling process, reducing the quality and efficiency of the shelling. Summary of the Invention

[0005] The purpose of the present invention is to provide a precision investment casting device and method thereof to solve the problem proposed in the above background technology that the traditional heating dewaxing device cannot reasonably adjust the heating power of each area according to the shape and structure of the shell, so that the shell cannot be heated evenly during the shelling process, thereby reducing the quality and efficiency of the shelling.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a precision investment casting device, comprising a base, wherein two support frames are symmetrically fixedly installed on the top of the base, a shaking assembly is arranged between the two support frames, a collecting box is arranged on the top of the two support frames, a filtering and clearing assembly is arranged inside the collecting box, and two limit covers are symmetrically and laterally slidably installed on the outside of the top of the collecting box, an installation groove is provided through the inside of one side of the two limit covers, a folding thermal insulation curtain is fixedly connected to the inside of the installation groove, a moving assembly is provided on the outside of the side of the collection box close to the two limit covers, a plurality of positioning rods are arranged laterally at equal intervals between the outside of one side of the two limit covers, and a partition assembly is provided at both ends of the plurality of positioning rods; the partition assembly includes a connecting frame, the connecting frame is fitted on the outside of one side of the limit cover close to the positioning rod, and a limit adjustment assembly is provided on the outside of one side of the connecting frame.

[0007] Furthermore, the two limiting covers are both C-shaped when viewed from above, and a limiting hole is embedded in the interior of one end of the connecting frame close to the positioning rod, and both ends of the positioning rod are slidably installed in the interior of the limiting hole, and a positioning plate is fixedly connected to the interior of one side of the folding thermal insulation curtain close to the connecting frame, and one side of the positioning plate is fixedly connected to one side of the connecting frame, and a temperature-controlled heater is fixedly installed in the interior of the limiting cover close to the side between each two connecting frames.

[0008] Furthermore, a number of heat insulation plates are slidably installed horizontally through the interior of the positioning plate at equal intervals, and every two adjacent heat insulation plates are connected by a sliding engagement arrangement. A positioning block is fixedly installed on the outside of one side of each heat insulation plate close to the connecting frame, and a tension spring is fixedly connected and installed between each positioning block and the positioning plate.

[0009] Furthermore, the limit adjustment assembly includes a limit rod, which is longitudinally fixedly installed on the outside of the limit cover near the connecting frame through a bracket, and the limit rod and the inside of one side of the connecting frame are slidably installed through the limit rod, and a plurality of interference holes are embedded at equal intervals on the outside of the limit rod, and a fixed block is fixed on the top side of the connecting frame near one of the interference holes, and a interference column is slidably installed laterally through the inside of the fixed block, one end of the interference column interferes with the inside of one of the interference holes, and a compression spring is sleeved on the outside of one side of the interference column, and the two ends of the compression spring are respectively installed on the outside of one side of the fixed block and the interference column.

[0010] Furthermore, the moving assembly includes a bidirectional threaded rod and a stepper motor. The bidirectional threaded rod is installed on the outside of one side of the collection box through a bracket for horizontal rotation. The stepper motor is fixedly installed on the outside of one side of the collection box. The output end of the stepper motor is coaxially fixed with one end of the bidirectional threaded rod. The two limit covers are fixedly provided with limit blocks on one side close to the bidirectional threaded rod, and one side of the limit blocks is threaded through and installed on the outside of one side of the bidirectional threaded rod.

[0011] Furthermore, the shaking assembly includes a driving motor and a connecting column. The driving motor is fixedly mounted on the outside of the top of the base between the two support frames. One side of the bottom end of the connecting column is fixedly mounted on the top of the output shaft of the driving motor. The connecting column is set in an inverted and tilted 7 shape.

[0012] Furthermore, the top of the connecting column is fixed to the middle position of the bottom of the collection box, and the two support frames are rotatably engaged and installed with auxiliary blocks on one side near the top of the connecting column, and connecting blocks are fixedly connected between the two side edges of the two auxiliary blocks. The connecting column is fixedly installed with a rotating column on one side near the connecting block, and one end of the rotating column passes through and is rotatably engaged and installed inside one side of the connecting block.

[0013] Furthermore, the filtering and clearing assembly includes a filter plate and two movable racks, the filter plate is fixedly installed inside one side of the collection box, and the two movable racks are symmetrically slidably engaged and installed inside one side of the collection box near the bottom end of the filter plate, and a plurality of filter holes are evenly spaced through the interior of the filter plate, one end of the two movable racks is fixed to one end of the limit block on the corresponding side, a plurality of installation cavities are evenly spaced inside the two movable racks, and through holes are opened inside the top ends of the two movable racks located at the plurality of installation cavities.

[0014] Furthermore, a ejector pin is longitudinally slidably installed inside the through hole, a stopper is fixedly installed at one end of the ejector pin located inside the installation cavity, an extrusion spring is connected and fixed between the bottom end of the stopper and the bottom inner wall of the installation cavity, and the top end of the ejector pin is inserted into the corresponding filter hole.

[0015] The present invention also provides a method for using the investment casting device, comprising the following steps:

[0016] S1: First, the shell-made special-shaped investment pattern is placed between two limit covers. Then, through the operation of the temperature-controlled heater, the moving component and the separation component, different parts of the special-shaped investment pattern are divided into heating areas and isolated. In this way, the temperature of different parts of the shell can be accurately controlled, so that the wax pattern melts and flows out to form a cavity;

[0017] S2: When the mold is being invested, the shaking component can be controlled to operate. By shaking the entire component, the wax liquid can be more easily flowed out from the complex parts inside the special-shaped investment mold under the action of gravity and inertia;

[0018] S3: The shaking component will drive the filter plate to shake synchronously when shaking, so that the outflowing wax liquid can be dispersed to different positions on the filter plate for rapid filtration;

[0019] S4: When dewaxing is completed, the moving assembly is restarted to drive the limit covers on both sides to expand and move, so as to facilitate the removal of the dewaxing casting mold. At the same time, the moving assembly will drive the moving frame to move synchronously, thereby driving multiple ejectors at the top to continuously hit the inside of the filter hole to perform the blockage removal operation.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. Through the coordinated operation of the moving assembly, the separation assembly, the limit adjustment assembly and several temperature-controlled heaters, multiple heating areas can be isolated and divided on the outside of the special-shaped investment pattern. In this way, different parts can be heated at different temperatures according to the specific shape of the special-shaped investment pattern and the distribution of the wax pattern, so that the wax pattern can be melted quickly and evenly and discharged from the shell, thereby improving the shelling efficiency, shortening the shelling time and ensuring good shelling quality;

[0022] 2. When in use, the shaking assembly causes the entire assembly to shake, which allows the wax liquid to flow out better from the corners and grooves inside the special-shaped investment mold under the action of gravity and inertia, thereby improving the efficiency of wax discharge and reducing the amount of wax residue in the investment mold. At the same time, when the entire assembly is shaken, the filter plate inside the collection box will be driven to shake synchronously, so that the outflowing wax liquid can be dispersed to different positions on the filter plate, thereby avoiding the situation where the wax liquid is concentrated and accumulated on the filter plate, which is conducive to speeding up the filtration of the wax liquid by the filter plate;

[0023] 3. When in use, the mobile component will trigger the filter and clearing components to run synchronously, so as to clear the filter holes on the filter plate, ensuring the subsequent filtering effect and making the overall use effect of the device better. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 For the present invention Figure 1 A in the middle is an enlarged structural diagram;

[0026] Figure 3 This is a schematic diagram of the three-dimensional structure of the positioning rod and the connecting frame installed in the present invention;

[0027] Figure 4 For the present invention Figure 3 The enlarged structural diagram at B in the middle;

[0028] Figure 5 This is a schematic diagram of the three-dimensional structure of the connection frame and the positioning plate of the present invention;

[0029] Figure 6 For the present invention Figure 5 The enlarged structural diagram at C in the middle;

[0030] Figure 7 This is a schematic diagram showing a top view of the heat insulation board of the present invention adaptively clamping a special-shaped investment pattern;

[0031] Figure 8 This is a schematic diagram of the three-dimensional structure of the connection block and the rotating column of the present invention;

[0032] Figure 9 This is a schematic diagram of the front view of the installation structure of the drive motor and the connecting column of the present invention;

[0033] Figure 10 This is a schematic diagram of the filter plate and collection box structure of the present invention;

[0034] Figure 11 For the present invention Figure 10 The enlarged structural diagram at D in the middle;

[0035] Figure 12 This is a bottom-up schematic diagram of the bidirectional threaded rod of the present invention rotating to drive the limit blocks and the movable frame on both sides to move.

[0036] In the accompanying drawings, the list of components represented by each reference number is as follows: 1. Base; 2. Support frame; 3. Drive motor; 4. Collecting box; 5. Positioning rod; 6. Limiting cover; 7. Connecting frame; 8. Limiting hole; 9. Mounting slot; 10. Folding thermal insulation curtain; 11. Positioning plate; 12. Insulation board; 13. Positioning block; 14. Tension spring; 15. Limiting rod; 16. Interference hole; 17. Fixed block; 18. Interference column; 19. Compression spring; 20. Bidirectional threaded rod; 21. Stepping motor; 22. Limiting block; 23. Filter plate; 24. Temperature control heater; 25. Auxiliary block; 26. Connecting block; 27. Connecting column; 28. Rotating column; 29. ​​Filter hole; 30. Moving frame; 31. Mounting cavity; 32. Through hole; 33. Ejector pin; 34. Stop block; 35. Extrusion spring. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] Example 1: Please refer to Figure 1 - Figure 7 , a precision investment casting device includes a base 1, two support frames 2 are symmetrically fixedly installed on the top of the base 1, and a collecting box 4 is provided on the top of the two support frames 2. Two limit covers 6 are symmetrically and laterally slidably installed on the top outside of the collecting box 4, and one side of the two limit covers 6 is penetrated by a mounting groove 9. The inside of the mounting groove 9 is fixedly connected with a folding thermal insulation curtain 10. A moving component is provided on the outside of the collecting box 4 near the two limit covers 6, and a number of positioning rods 5 are arranged horizontally at equal intervals between the outside of one side of the two limit covers 6. Both ends of the number of positioning rods 5 are provided with partition components; the partition component includes a connecting frame 7, which is fitted on the outside of the limit cover 6 near the positioning rod 5, and a limit adjustment component is provided on the outside of one side of the connecting frame 7.

[0039] The two limiting covers 6 are both C-shaped when viewed from above, and a limiting hole 8 is embedded inside the end of the connecting frame 7 close to the positioning rod 5. The two ends of the positioning rod 5 are slidably installed inside the limiting hole 8. The folding thermal insulation curtain 10 is fixedly connected to the inside of the side close to the connecting frame 7 with a positioning plate 11, and the outside of one side of the positioning plate 11 is fixedly connected to one side of the connecting frame 7. The limiting cover 6 is fixedly installed on the side between each two connecting frames 7 with a temperature-controlled heater 24.

[0040] Several insulation boards 12 are slidably installed horizontally through the interior of the positioning plate 11 at equal intervals. Every two adjacent insulation boards 12 are connected by sliding engagement. A positioning block 13 is fixedly installed on the outside of each insulation board 12 on one side close to the connecting frame 7. A tension spring 14 is fixedly connected and installed between each positioning block 13 and the positioning plate 11.

[0041] The limit adjustment assembly includes a limit rod 15, which is longitudinally fixedly installed on the outside of the limit cover 6 near the connecting frame 7 through a bracket. The limit rod 15 and the inside of one side of the connecting frame 7 are slidably installed through the limit rod 15. A number of interference holes 16 are embedded at equal intervals on the outside of the limit rod 15. A fixed block 17 is fixed on the top side of the connecting frame 7 near one of the interference holes 16. A interference column 18 is slidably installed laterally through the inside of the fixed block 17. One end of the interference column 18 is in contact with one of the interference holes 16. A compression spring 19 is sleeved on the outside of one side of the interference column 18. The two ends of the compression spring 19 are respectively installed on the outside of one side of the fixed block 17 and the interference column 18.

[0042] The moving assembly includes a bidirectional threaded rod 20 and a stepper motor 21. The bidirectional threaded rod 20 is installed on the outside of one side of the collection box 4 through a bracket for horizontal rotation. The stepper motor 21 is fixedly installed on the outside of one side of the collection box 4. The output end of the stepper motor 21 is coaxially fixed with one end of the bidirectional threaded rod 20. The two limit covers 6 are fixedly provided with a limit block 22 on one side close to the bidirectional threaded rod 20, and one side of the limit block 22 is threaded and installed on the outside of one side of the bidirectional threaded rod 20.

[0043] When the positioning plate 11 is moved, the friction column 18 is driven by the spring 19 to contact the corresponding friction hole 16 in the limit rod 15, thereby adjusting the limit of the positioning plate 11 and the positioning plates 11 on both sides to ensure the stability of the adjustment position. After the worker faces the injection port of the special-shaped mold to be dewaxed downward, he places the whole thing between the two limit covers 6, and then starts the stepper motor 21 on one side. The rotation of the output shaft of the stepper motor 21 drives the bidirectional threaded rod 20 fixed coaxially on one side to rotate synchronously, thereby driving the limit blocks 22 on both sides and the limit covers 6 on both sides to move synchronously in the center. In the process of moving in the center, through the sliding installation of several heat insulation plates 12 and the traction and resistance of the positioning block 13 and the tension spring 14, the side edges of the special-shaped mold can be adaptively adjusted to be clamped and separated, ensuring the overall clamping and separation effect, and at the same time, the scope of application is wide. After the clamping and separation is completed, the heating power of the existing temperature control heater 24 in each area can be reasonably adjusted according to the shape and structure of the corresponding position of the special-shaped mold, so as to heat different parts at different temperatures in a targeted manner, so that the wax mold can be quickly and evenly melted and discharged from the mold shell, thereby improving the shelling efficiency, shortening the shelling time, and ensuring better shelling quality.

[0044] Example 2: Please refer to Figure 8 - Figure 9 This embodiment further illustrates Example 1, where a shaking assembly is provided between the two support frames 2 .

[0045] The shaking assembly includes a drive motor 3 and a connecting column 27. The drive motor 3 is fixedly mounted on the outside of the top of the base 1 between the two support frames 2. One side of the bottom end of the connecting column 27 is fixedly mounted on the top of the output shaft of the drive motor 3. The connecting column 27 is set in an inverted and tilted 7 shape.

[0046] The top of the connecting column 27 is fixed to the middle position of the bottom of the collecting box 4, and the two support frames 2 are rotatably engaged and installed with auxiliary blocks 25 on one side near the top of the connecting column 27. Connecting blocks 26 are fixedly connected between the two side edges of the two auxiliary blocks 25. A rotating column 28 is fixedly installed on one side of the connecting column 27 near the connecting block 26, and one end of the rotating column 28 passes through and is rotatably engaged and installed inside one side of the connecting block 26.

[0047] In this embodiment, when the special-shaped mold is subjected to zoned heating and dewaxing operation, the drive motor 3 on the bottom side can be started, and the rotation of the output shaft of the drive motor 3 can drive the connecting column 27 at the top to rotate synchronously. At the same time, the inverted and tilted 7-shaped setting of the connecting column 27 and the rotation installation of the auxiliary block 25 on the side and the limiting guidance of the connecting block 26 and the connecting column 27 are coordinated, so that when the connecting column 27 rotates, it will drive the special-shaped mold clamped between the collecting box 4 and the limiting cover 6 at the top to shake and rotate. Through the overall shaking, the wax liquid can be better discharged from the corners and grooves inside the special-shaped mold under the action of gravity and inertia, thereby improving the efficiency of wax removal and reducing the residual amount of wax liquid in the mold.

[0048] Example 3: Please refer to Figure 10 - Figure 12 This embodiment further illustrates Example 1, in which a filtering and clearing assembly is provided inside the collecting box 4 .

[0049] The filtering and clearing assembly includes a filter plate 23 and two movable racks 30. The filter plate 23 is fixedly installed inside one side of the collecting box 4. The two movable racks 30 are symmetrically slidably engaged and installed inside one side of the collecting box 4 near the bottom end of the filter plate 23. A number of filter holes 29 are evenly spaced through the inside of the filter plate 23. One end of the two movable racks 30 is fixed to one end of the limit block 22 on the corresponding side. A number of installation cavities 31 are evenly spaced inside the two movable racks 30. Through holes 32 are opened inside the top ends of the two movable racks 30 located at the several installation cavities 31.

[0050] A pin 33 is longitudinally slidably installed inside the through hole 32, and a stopper 34 is fixedly installed at one end of the pin 33 located inside the mounting cavity 31. An extrusion spring 35 is connected and fixed between the bottom end of the stopper 34 and the inner wall of the bottom end of the mounting cavity 31, and the top end of the pin 33 is inserted into the corresponding filter hole 29.

[0051] In this embodiment, when the connecting column 27 drives the special-shaped investment mold clamped between the collecting box 4 and the limiting cover 6 to shake and rotate, it will drive the filter plate 23 inside the collecting box 4 to shake synchronously, so that the outflowing wax liquid can be dispersed to different positions on the filter plate 23, thereby avoiding the wax liquid from accumulating on the filter plate 23, which is conducive to speeding up the filtration of the wax liquid by the filter plate 23.

[0052] It should be noted that when the output shaft of the stepping motor 21 rotates, it drives the bidirectional threaded rod 20 to rotate synchronously, so that the limit blocks 22 on both sides drive the limit cover 6 to move, which will drive the movable frame 30 at the bottom end of the filter plate 23 to move synchronously. At the same time, through the coordinated installation of the mounting cavity 31, through hole 32, ejector pin 33, stop block 34 and extrusion spring 35 on the movable frame 30, when the movable frame 30 encounters the filter hole 29 on the filter plate 23 during movement, the multiple ejector pins 33 on the top of the movable frame 30 will pop out and hit the inside of the filter hole 29. When contacting the bottom wall of the filter plate 23, the ejector pin 33 will be squeezed and automatically retracted, thereby automatically and orderly clearing the inside of the filter hole 29, and the overall use effect is good.

[0053] The present invention also provides a method for using the investment casting device, comprising the following steps:

[0054] S1: First, the shell-made special-shaped investment pattern is placed between two limiting covers 6. Then, the temperature-controlled heater 24, the moving assembly and the separating assembly are operated to divide and isolate different parts of the special-shaped investment pattern into heating areas. In this way, the temperature of different parts of the shell can be accurately controlled, so that the wax pattern melts and flows out to form a cavity.

[0055] S2: When the mold is being invested, the shaking component can be controlled to operate. By shaking the entire component, the wax liquid can be more easily flowed out from the complex parts inside the special-shaped investment mold under the action of gravity and inertia;

[0056] S3: The shaking assembly drives the filter plate 23 to shake synchronously when shaking, so that the wax liquid can be dispersed to different positions on the filter plate 23 and filtered quickly;

[0057] S4: When the dewaxing is completed, the moving assembly is restarted to drive the limit covers 6 on both sides to expand and move, so as to facilitate the removal of the dewaxing casting mold. At the same time, the moving assembly will drive the moving frame 30 to move synchronously, thereby driving the top multiple ejectors 33 to continuously impact the inside of the filter hole 29 to perform the blockage removal operation.

[0058] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0059] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An investment casting device, comprising a base (1), characterized in that: Two support frames (2) are symmetrically fixedly installed on the top of the base (1), a shaking component is provided between the two support frames (2), a collecting box (4) is provided on the top of the two support frames (2), a filtering and clearing component is provided inside the collecting box (4), two limit covers (6) are symmetrically and laterally slidably installed on the outside of the top of the collecting box (4), a mounting groove (9) is provided through the inside of one side of the two limit covers (6), and a folding thermal insulation curtain (10) is fixedly connected to the inside of the mounting groove (9), a moving component is provided on the outside of one side of the collecting box (4) close to the two limit covers (6), a plurality of positioning rods (5) are provided laterally at equal intervals between the outside of one side of the two limit covers (6), and a partition component is provided at both ends of the plurality of positioning rods (5); The partition assembly comprises a connecting frame (7), the connecting frame (7) being arranged on the outside of one side of the limiting cover (6) close to the positioning rod (5), and a limiting adjustment assembly being arranged on the outside of one side of the connecting frame (7); The two limiting covers (6) are both C-shaped when viewed from above, a limiting hole (8) is embedded in one end of the connecting frame (7) close to the positioning rod (5), and both ends of the positioning rod (5) are slidably installed in the limiting hole (8). A positioning plate (11) is fixedly connected to the inside of the folding thermal insulation curtain (10) on one side close to the connecting frame (7), and one side of the positioning plate (11) is fixedly connected to one side of the connecting frame (7). A temperature-controlled heater (24) is fixedly installed on the inside of the limiting cover (6) close to the side between each two connecting frames (7); A plurality of heat insulation boards (12) are slidably installed transversely through the interior of the positioning plate (11) at equal intervals, and each two adjacent heat insulation boards (12) are connected by sliding engagement. A positioning block (13) is fixedly installed on the outside of one side of each heat insulation board (12) close to the connecting frame (7), and a tension spring (14) is fixedly connected and installed between each positioning block (13) and the positioning plate (11).

2. The investment casting device according to claim 1, characterized in that: The limit adjustment assembly includes a limit rod (15), which is longitudinally fixedly mounted on the outside of the limit cover (6) near the connecting frame (7) through a bracket, and the limit rod (15) and the inside of one side of the connecting frame (7) are slidably mounted through the limit rod (15), and a plurality of contact holes (16) are embedded and opened at equal intervals on the outside of the limit rod (15), and a fixed block (17) is fixed on the top side of the connecting frame (7) near one of the contact holes (16), and a contact column (18) is slidably mounted on the inside of the fixed block (17), one end of the contact column (18) contacts the inside of one of the contact holes (16), and a compression spring (19) is sleeved on the outside of one side of the contact column (18), and the two ends of the compression spring (19) are respectively mounted on the outside of one side of the fixed block (17) and the contact column (18).

3. The investment casting device according to claim 1, characterized in that: The moving assembly comprises a bidirectional threaded rod (20) and a stepper motor (21), wherein the bidirectional threaded rod (20) is mounted on the outside of one side of the collecting box (4) by means of a bracket for transverse rotation, and the stepper motor (21) is fixedly mounted on the outside of one side of the collecting box (4), and the output end of the stepper motor (21) is coaxially fixed with one end of the bidirectional threaded rod (20), and a limiting block (22) is fixedly provided on one side of the two limiting covers (6) close to the bidirectional threaded rod (20), and one side of the limiting block (22) is threadedly mounted on the outside of one side of the bidirectional threaded rod (20).

4. The investment casting device according to claim 1, characterized in that: The shaking assembly comprises a driving motor (3) and a connecting column (27), wherein the driving motor (3) is fixedly mounted on the outside of the top end of the base (1) between the two support frames (2), and one side of the bottom end of the connecting column (27) is fixedly mounted on the top end of the output shaft of the driving motor (3), and the connecting column (27) is arranged in an inverted and tilted 7-shaped manner.

5. The investment casting device according to claim 4, characterized in that: The top end of the connecting column (27) is fixedly mounted at the middle position of the bottom end of the collecting box (4); the two supporting frames (2) are both rotatably engaged with auxiliary blocks (25) on one side of the top end near the connecting column (27); connecting blocks (26) are fixedly connected between the two side edges of the two auxiliary blocks (25); a rotating column (28) is fixedly mounted on one side of the connecting column (27) near the connecting block (26); one end of the rotating column (28) passes through and is rotatably engaged with the inside of one side of the connecting block (26).

6. The investment casting device according to claim 5, characterized in that: The filtering and clearing assembly comprises a filter plate (23) and two movable racks (30), wherein the filter plate (23) is fixedly mounted inside one side of the collecting box (4), and the two movable racks (30) are symmetrically slidably engaged and mounted inside one side of the collecting box (4) near the bottom end of the filter plate (23), wherein a plurality of filter holes (29) are uniformly spaced through the interior of the filter plate (23), and one end of each of the two movable racks (30) is fixedly mounted to one end of a stop block (22) on the corresponding side, wherein a plurality of mounting cavities (31) are uniformly spaced inside the two movable racks (30), and through holes (32) are penetrated through the top ends of the two movable racks (30) located at the plurality of mounting cavities (31).

7. The investment casting device according to claim 6, characterized in that: A thimble (33) is longitudinally slidably installed inside the through hole (32), a stopper (34) is fixedly installed at one end of the thimble (33) located inside the installation cavity (31), an extrusion spring (35) is connected and fixed between the bottom end of the stopper (34) and the inner wall of the bottom end of the installation cavity (31), and the top end of the thimble (33) is inserted into the corresponding filter hole (29).

8. A method for using an investment casting device, according to any one of claims 1 to 7, characterized in that: The steps include: S1: First, the prepared special-shaped investment mold is placed between two limit covers (6), and then the temperature control heater (24), the moving component and the separation component are operated to divide and isolate different parts of the special-shaped investment mold into heating areas, so that the temperature of different parts of the shell can be accurately controlled, so that the wax mold is melted and flows out to form a cavity; S2: When the mold is being invested, the shaking component can be controlled to operate. By shaking the entire component, the wax liquid can be more easily flowed out from the complex parts inside the special-shaped investment mold under the action of gravity and inertia; S3: When the shaking component is shaken, it drives the filter plate (23) to shake synchronously, so that the wax liquid flowing out can be dispersed to different positions on the filter plate (23) and filtered quickly; S4: When the dewaxing is completed, the moving assembly is restarted to drive the limit covers (6) on both sides to expand and move, so as to facilitate the removal of the dewaxing casting mold. At the same time, when the moving assembly is running, it will drive the moving frame (30) to move synchronously, thereby driving the top multiple ejectors (33) to continuously hit the inside of the filter hole (29) to perform the blockage removal operation.

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