An investment silicon sol quantitative pouring type casting equipment and a casting process
By heating the casting mold and combining it with the linkage control of the heating wire and the sliding plate, the problems of deformation and dimensional accuracy caused by temperature difference during the casting of melt-cast silica sol were solved, achieving quantitative casting and energy-saving effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HENGZHU (XIANGYANG) MASCH CO LTD
- Filing Date
- 2026-02-27
- Publication Date
- 2026-06-12
AI Technical Summary
During the casting process of silica sol, the temperature difference caused by the cooling of the first poured silica sol can easily lead to deformation or dimensional accuracy problems, increasing the difficulty and time of subsequent processing.
Heating components are used to heat the casting mold, and the quantitative casting and positioning are achieved through the circuit control of the heating wire to ensure that the silica sol maintains a consistent temperature during the casting process. The quantitative casting and detachment of the silica sol are achieved by using a sliding plate and conductive sheet in linkage.
It improves the accuracy of casting dimensions, reduces the risk of deformation caused by the cooling and solidification of silica sol, saves energy and reduces silica sol waste, and improves production efficiency.
Smart Images
Figure CN122184274A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of silica sol casting, and in particular to a quantitative pouring casting equipment and casting process for investment casting of silica sol. Background Technology
[0002] In modern industry, the shift from forging to casting, and the development towards minimal or no cutting, high precision, high surface finish, and complex parts or assemblies that are difficult to process using other methods, have opened up broad application prospects for precision casting technology. Silica sol, due to its relatively simple manufacturing process, low cost, convenient source, and lack of pollution, is increasingly widely used in modern investment casting. Compared with other investment casting processes, silica sol mold shells, with their higher strength, make it possible to produce larger precision castings using investment casting.
[0003] In the existing investment casting process, the silica sol poured into the casting mold cools down first, and the silica sol poured later will have a temperature difference with the first silica sol. This will make it more prone to deformation or dimensional accuracy problems, and increase the difficulty and time of subsequent processing. Summary of the Invention
[0004] To improve the accuracy of casting dimensions, this application provides a quantitative casting equipment for meltblown silica sol.
[0005] The technical solution of the quantitative pouring casting equipment for silica sol casting provided in this application is as follows:
[0006] A quantitative casting device for silica sol casting includes a casting platform with a storage tank and a pouring port. A casting mold is placed on the casting platform, and the casting platform drives the casting mold to slide along the length of the casting platform. A heating assembly is located in the middle of the casting platform, comprising a heating frame, a heating platform, and heating blocks. The heating frame is fixed to the casting platform, and the heating platform is fixed to the heating frame. There are two heating blocks that slide on the heating platform. A heating wire is installed inside the heating platform, and both ends of the heating wire are electrically connected to the heating blocks. A heating slot is provided at the bottom of the casting mold. When the casting mold slides to the heating platform, the heating blocks are inserted into the heating slots. The two heating slots are connected by a wire. When the heating blocks are inserted into the heating slots, the heating wires are energized, and the casting mold is aligned with the pouring port.
[0007] By adopting the above technical solution, the casting mold is heated by the heating component, thereby reducing the possibility of deformation or dimensional accuracy problems caused by the cooling and solidification of the pre-cast silica sol before the silica sol is completely poured, thus improving the accuracy of the casting dimensions. The circuit of the heating wire is connected when the casting mold is connected to the pouring port. On the one hand, the heating wire can be activated when heating is needed, thereby saving energy. On the other hand, it can also play a positioning role, reducing the probability of silica sol leakage during the pouring process due to misalignment between the casting mold and the pouring port.
[0008] Optionally, a sliding plate is slidably disposed inside the casting mold, and an ejector block is fixedly disposed on the sliding plate. The ejector block is slidably disposed inside the heating slot. When the silica sol is filled into the casting mold, it drives the sliding plate to slide. When the silica sol fills the casting mold, the ejector block slides and drives the heating insert to disengage from the heating slot.
[0009] Optionally, the heating slot sidewall is embedded with a conductive sheet, and the two ends of the wire are respectively connected to the conductive sheets in the two heating slots.
[0010] Optionally, a closing plate is slidably provided at the opening of the casting mold, and the closing plate opens or closes the opening of the casting mold by sliding.
[0011] Optionally, the casting mold is provided with a driving mechanism, which includes a driving spring, a driving rod, a push rod, and a power rod. The driving spring is disposed between the closing plate and the casting mold, and drives the closing plate to slide and open the casting mold opening. The driving rod is fixed to the closing plate. The push rod is slidably disposed in the casting mold, with one end abutting against the driving rod. The power rod is slidably disposed in the casting mold at the end away from the push rod, with one end abutting against the push rod and the other end sliding into the lower part of the sliding plate. When the ejector block slides and drives the heating insert block to disengage from the heating slot, the sliding plate drives the power rod to slide, and the power rod drives the push rod to drive the closing plate to close the casting mold opening.
[0012] Optionally, the casting mold is equipped with an adjusting bolt, which abuts against the side of the power rod away from the sliding plate, and the adjusting bolt drives the power rod away from the sliding plate.
[0013] Optionally, a baffle is slidably provided at the pouring gate, and the baffle opens or closes the pouring gate by sliding.
[0014] Optionally, the pouring port is equipped with a drive cylinder, the piston rod of which is fixedly connected to a baffle. When the circuit of the heating wire is turned on, the drive cylinder drives the baffle to open the pouring port; when the circuit of the heating wire is turned off, the drive cylinder drives the baffle to close the pouring port.
[0015] Optionally, the storage tank is slidably mounted on the pouring platform, and the storage tank slides along the height direction of the pouring platform.
[0016] A silica sol casting process includes the following steps:
[0017] S1: Add silica sol. Add silica sol to the storage tank and continuously heat the silica sol.
[0018] S2: Casting mold installation: Place the casting mold on the casting platform and convey it to the heating component for installation.
[0019] S3: Heated casting, the casting mold is heated and maintained at its temperature by the heating component, and casting is carried out at the same time;
[0020] S4: Stop pouring at a set weight. When the silica sol in the pouring mold reaches the preset weight, heating is stopped and pouring into the pouring mold is also stopped.
[0021] S5: Convey and demold, the casting mold is conveyed to the outside of the casting platform for cooling and then demolded.
[0022] By adopting the above technical solution, the probability of silica sol cooling and solidification affecting subsequent pouring can be reduced by using a variable heating casting mold and variable pouring method. After heating is stopped, the pouring of silica sol is stopped at the same time, which achieves quantitative pouring and reduces the waste of silica sol.
[0023] In summary, this application includes at least one of the following beneficial technical effects:
[0024] 1. Heating the casting mold via a heating component reduces the likelihood of deformation or dimensional inaccuracies caused by the solidification of pre-cast silica sol before all silica sol has been poured, thus improving the accuracy of the casting dimensions. The circuit of the heating wire is activated when the casting mold is aligned with the gate, which saves energy by activating the heating wire when heating is needed, and also serves as a positioning element, reducing the probability of silica sol leakage during the casting process due to misalignment between the casting mold and the gate.
[0025] 2. When the silica sol in the casting mold fills the mold cavity, the weight of the silica sol drives the sliding plate to slide. The sliding plate drives the ejector block to slide and eject the heating block in the heating slot, thereby disconnecting the circuit of the heating wire and the positioning of the mold on the heating table by the heating block, thus facilitating the removal of the mold from the heating table after the silica sol filling is completed.
[0026] 3. By sliding the closing plate, excessive silica sol pouring can be avoided by closing the mold opening after the silica sol pouring is completed, thereby reducing the impact of excess silica sol on the precision of subsequent products. When the ejector block slides and drives the heating insert to disengage from the heating slot, the sliding plate drives the power rod to slide. The power rod drives the ejector rod, which in turn drives the drive rod to drive the closing plate to close the opening of the pouring mold. When the silica sol in the pouring mold reaches the required amount, the sliding plate slides and drives the heating insert to disengage from the heating socket. At the same time, it also drives the power rod to slide. The sliding of the power rod drives the ejector rod to slide. The sliding of the ejector rod drives the drive rod to drive the closing plate to close the opening of the pouring mold, thereby achieving quantitative pouring and improving the pouring precision.
[0027] 4. By relaying the feedback of the heating wire circuit status to the electric cylinder, the pouring of the pouring mold is realized after the pouring mold is positioned and installed. After the inner cavity of the pouring mold is filled, the heating component is disconnected and the pouring of the pouring port to the pouring mold is stopped.
[0028] 5. By using a variable heating casting mold for variable casting, the probability of silica sol cooling and solidifying during the casting process affecting subsequent casting can be reduced. After heating is stopped, the casting of silica sol is stopped at the same time, which achieves quantitative casting and reduces the waste of silica sol. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.
[0030] Figure 2 This is a cross-sectional view of the overall structure of an embodiment of this application.
[0031] Figure 3 yes Figure 2 A magnified view of section A in the middle.
[0032] In the diagram, 1. Pouring platform; 2. Storage tank; 3. Mounting frame; 31. Fixing part; 32. Sliding part; 4. Pouring gate; 5. Pouring mold; 6. Conveyor belt; 7. Heating assembly; 71. Heating frame; 72. Heating platform; 73. Heating insert; 8. Heating wire; 9. Heating slot; 10. Wire; 11. Sliding plate; 12. Ejector block; 13. Conductive sheet; 14. Closing plate; 15. Drive mechanism; 151. Drive spring; 152. Drive rod; 153. Ejector rod; 154. Power rod; 16. Adjusting bolt; 17. Baffle; 18. Drive cylinder. Detailed Implementation
[0033] The following is in conjunction with the appendix Figure 1-3 The present application will be further described with reference to specific embodiments:
[0034] First, it should be noted that in the description of this application, the use of directional terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicates the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used solely for descriptive purposes and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of numerical quantifiers such as "first," "second," and "third" is for descriptive purposes only and should not be construed as indicating or implying relative importance. Additionally, in this application, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, interference fits, transition fits, or integral connections; they can refer to direct connections or indirect connections through an intermediate medium. Therefore, those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0035] This application discloses a quantitative casting equipment for silica sol casting, referring to... Figure 1 and Figure 2The system includes a casting platform 1 erected on the ground, which is elongated. A storage tank 2 is mounted on the casting platform 1 via a mounting bracket 3. The storage tank 2 has a casting port 4 facing the casting platform 1. A casting mold 5 is placed on the casting platform 1. The casting mold 5 is a metal mold made of a heat-transferable material, preferably an iron mold in this embodiment. Conveyor belts 6 are installed on both sides of the casting platform 1 in the width direction. The casting mold 5 is mounted on the conveyor belts 6. The conveyor belts 6 are driven by a motor to transport materials along the length direction of the casting platform 1. The conveyor belt 6 on the pouring platform 1 drives the pouring mold 5 to slide along the length of the pouring platform 1. A heating assembly 7 is provided in the middle of the pouring platform 1. The heating assembly 7 includes a heating frame 71, a heating platform 72, and heating blocks 73. The heating frame 71 is fixed on the pouring platform 1, and the heating platform 72 is fixed on the heating frame 71. There are two heating blocks 73, which are slidably disposed on the heating platform 72. The heating blocks 73 are driven by springs to extend out of the heating platform 72, and at the same time, the heating blocks 73 are opened in the feeding direction of the conveyor belt 6. The heating platform 72 has chamfered edges and is equipped with a heating wire 8. Both ends of the heating wire 8 are electrically connected to a heating insert 73. In this embodiment, the heating insert 73 is a block of conductive metal, specifically a copper block. A heating slot 9 is provided at the bottom of the casting mold 5. When the casting mold 5 slides onto the heating platform 72, the heating insert 73 is inserted into the heating slot 9. The two heating slots 9 are connected by a wire 10. When the heating insert 73 is inserted into the heating slot 9, the heating wire 8 is energized, and simultaneously, the casting mold 5... The pouring gate 4 is prepared; the heating component 7 heats the pouring mold 5, thereby reducing the possibility of deformation or dimensional accuracy problems caused by the solidification of the poured silica sol before the silica sol is fully poured, thus improving the accuracy of the pouring dimensions; the circuit of the heating wire 8 is connected when the pouring mold 5 is aligned with the pouring gate 4. On the one hand, the heating wire 8 can be activated when heating is needed, thereby saving energy. On the other hand, it can also play a positioning role, reducing the probability of silica sol leakage during the pouring process due to misalignment between the pouring mold 5 and the pouring gate 4.
[0036] Reference Figure 2 and Figure 3A sliding plate 11 is slidably disposed inside the casting mold 5. The sliding plate 11 is disposed inside the mold cavity of the casting mold 5. An ejector block 12 is fixed on the sliding plate 11. The ejector block 12 is slidably disposed inside the heating slot 9. When the silica sol is filled into the casting mold 5, it drives the sliding plate 11 to slide. When the silica sol fills the casting mold 5, the ejector block 12 slides and drives the heating insert 73 to disengage from the heating slot 9. When the silica sol in the casting mold 5 fills the mold cavity, the weight of the silica sol drives the sliding plate 11 to slide. The sliding of the sliding plate 11 drives the ejector block 12 to slide and eject the heating insert 73 from the heating slot 9, thereby disconnecting the circuit of the heating wire 8 and disconnecting the positioning of the mold on the heating table 72 by the heating insert 73, thus facilitating the removal of the mold from the heating table 72 after the silica sol filling is completed.
[0037] Reference Figure 2 and Figure 3 The heating slot 9 has a conductive sheet 13 embedded in its side wall. The two ends of the wire 10 are respectively connected to the conductive sheet 13 in the two heating slots 9. The conductive sheet 13 is a sheet made of metal with conductive properties. In this embodiment, the conductive sheet 13 is made of copper. The conductive sheet 13 is embedded in the side wall of the heating slot 9 along the depth of the heating slot 9. When the heating plug 73 enters the heating slot 9, it can connect the heating wire 8 by contacting the conductive sheet 13 through the heating slot 9. When the heating plug 73 is completely removed from the heating slot 9, the circuit of the heating wire 8 is disconnected. During the process of pouring silica sol, the sliding plate 11 slides at any time due to the increase in weight of the silica sol. The setting of the conductive sheet 13 can connect the heating wire 8 before the heating plug 73 is completely removed from the heating slot 9, thereby achieving the effect that the heating wire 8 can always heat the mold during the pouring process, thereby ensuring the accuracy of the pouring size.
[0038] Reference Figure 2 and Figure 3A closing plate 14 is slidably provided at the opening of the casting mold 5. In this embodiment, two closing plates 14 are provided, which slide back to back or towards each other. The closing plates 14 open or close the opening of the casting mold 5 by sliding back to back or towards each other. By sliding the closing plates 14, excessive pouring of silica sol can be avoided by closing the mold opening after the silica sol is poured, thereby reducing the impact of excess silica sol on the precision of subsequent products. A driving mechanism 15 is provided inside the casting mold 5. The driving mechanism 15 includes a driving spring 151, a driving rod 152, a push rod 153, and a power rod 154. The driving spring 151 is disposed between the closing plate 14 and the casting mold 5. The drive spring 151 drives the closing plate 14 to slide and open the opening of the casting mold 5. The drive rod 152 is fixed on the closing plate 14. The push rod 153 is slidably disposed inside the casting mold 5. One end of the push rod 153 abuts against the drive rod 152. The power rod 154 is slidably disposed inside the casting mold 5 at the end of the push rod 153 away from the drive rod 152. One end of the power rod 154 abuts against the push rod 153, and the other end slides into the lower part of the sliding plate 11. In this embodiment, wedge-shaped surfaces are opened at both ends of the length direction of the push rod 153. The wedge-shaped surfaces abut against the drive rod 152 and the power rod 154, thereby realizing the effect of power reversal. The ejector block 12 slides and drives the heating insert 73 to disengage from the heating plate. When the hot slot 9 is in operation, the sliding plate 11 drives the power rod 154 to slide. The power rod 154 drives the push rod 153, which in turn drives the drive rod 152 to drive the closing plate 14 to close the opening of the casting mold 5. When the silica sol in the casting mold 5 reaches the required amount, the sliding plate 11 slides and drives the heating insert 73 to disengage from the heating insert hole. At the same time, it also drives the power rod 154 to slide. The sliding of the power rod 154 drives the push rod 153 to slide. The sliding of the push rod 153 drives the drive rod 152 to drive the closing plate 14 to close the opening of the casting mold 5, thereby achieving quantitative casting and improving the casting accuracy. The casting mold 5 is threadedly connected to an adjusting bolt 16, which has a countersunk head. The adjusting bolt 16 is mounted on the casting mold 5 and abuts against the power rod 154 on the side away from the sliding plate 11. By loosening the adjusting bolt 16, the power rod 154 moves away from the sliding plate 11 under the action of the spring force of the drive spring 151 and its own weight, thereby disconnecting the drive of the sliding plate 11 to the opening and closing plate. Even when the mold cavity is filled with silica sol, the opening of the casting mold 5 can be opened, which facilitates demolding after cooling. Tightening the adjusting bolt 16 causes the adjusting bolt 16 to drive the power rod 154 to abut against the ejector rod 153 and enables the sliding plate 11 to drive the power rod 154, thereby realizing the installation of the power rod 154 and facilitating the linkage of the sliding plate 11 to close the opening of the casting mold 5.
[0039] Reference Figure 2 and Figure 3A baffle 17 is slidably installed at the pouring gate 4. The baffle 17 opens or closes the pouring gate 4 by sliding. The baffle 17 can close the pouring gate 4 after pouring is completed, reducing the probability of silica sol dripping when not pouring, thereby reducing the waste of silica sol and the probability of silica sol affecting the production environment. A drive cylinder 18 is installed at the pouring gate 4. The piston rod of the drive cylinder 18 is fixedly connected to the baffle 17. The drive cylinder 18 is electrically connected to a controller. The controller and receiver are connected. A signal generator is installed on the circuit of the heating wire 8. The signal transmitter disconnects according to the connection and disconnection of the circuit of the heating wire 8. An electrical signal is sent to the receiver, which feeds back the received signal to the controller to control the drive cylinder 18. When the circuit of the heating wire 8 is turned on, the drive cylinder 18 drives the baffle 17 to open the pouring port 4. When the circuit of the heating wire 8 is turned off, the drive cylinder 18 drives the baffle 17 to close the pouring port 4. By linking the drive cylinder with the feedback of the circuit status of the heating wire 8, the pouring of the pouring mold 5 is realized after the pouring mold is positioned and installed. After the inner cavity of the pouring mold is filled, the heating component 7 is turned off and the pouring of the pouring port 4 to the pouring mold 5 is stopped.
[0040] Reference Figure 1 and Figure 2 The mounting bracket 3 on the pouring platform 1 includes a fixed part 31 and a sliding part 32. The fixed part 31 is fixed on the pouring platform 1, and the sliding part 32 is slidably disposed on the fixed part 31. The sliding part 32 is fixed to the fixed part 31 by bolts. The storage tank 2 is slidably disposed on the pouring platform by sliding the sliding part 32 on the fixed part 31. The storage tank 2 slides along the height direction of the pouring platform 1. The height of the pouring port 4 is adjusted by adjusting the height of the storage tank, so that the height of the storage tank can be adjusted according to the height of the pouring mold, so that the pouring port 4 can be used for pouring molds 5 of different heights, thereby improving the applicability. In this embodiment, the storage tank 2 is selected to have a heating function, thereby reducing the probability of the silica sol cooling and fixing in the storage tank 2. In order to save energy, the storage tank 2 is preferably heat-insulating, and a temperature sensor can also be set to monitor the temperature of the storage tank 2 in real time.
[0041] A silica sol casting process includes the following steps: S1: Adding silica sol, adding silica sol to a storage tank 2 and continuously heating the silica sol; S2: Installing the casting mold 5, placing the casting mold 5 on a casting platform 1 and conveying it to a heating component 7 for positioning and fixing; S3: Heating and pouring, maintaining the temperature of the casting mold 5 by heating it with the heating component 7, while pouring into the casting mold 5; S4: Stopping pouring at a predetermined weight, stopping heating and pouring into the casting mold 5 when the silica sol in the casting mold 5 reaches a preset weight; S5: Conveying and demolding, conveying the casting mold 5 to the outside of the casting platform 1 for cooling and then demolding. By varying the heating of the casting mold 5 and the pouring process, the probability of the silica sol cooling and fixing during the pouring process affecting subsequent pouring can be reduced. Stopping heating and pouring of silica sol simultaneously achieves quantitative pouring, reducing the waste of silica sol.
[0042] The implementation principle of this application embodiment is as follows: the height of the storage tank 2 is adjusted according to the height of the casting mold, silica sol is added into the storage tank 2 and the silica sol is continuously heated, and then the casting mold 5 is placed on the casting platform 1. The placement of the casting mold 5 can be achieved by a feeding mechanism such as a vibratory feeder. The casting mold 5 is conveyed and installed on the heating component 7 for positioning and fixation, and connected to the heating wire 8 to heat the mold. The heating component 7 heats the casting mold 5 to maintain its temperature, while the casting mold 5 is poured. When the silica sol in the casting mold 5 reaches the preset weight, heating is stopped and pouring of the casting mold 5 is also stopped. Then the casting mold 5 is conveyed to the outside of the casting platform 1 for cooling and demolding.
[0043] It should be noted that the above embodiments are only used to illustrate this application and are not intended to limit the technical solutions described in this application. Although this specification has described this application in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to this application. All technical solutions and improvements that do not depart from the spirit and scope of this application should be covered within the scope of the claims of this application.
Claims
1. A quantitative casting equipment for investment casting of silica sol, comprising a casting platform (1), a storage tank (2) provided on the casting platform (1), a pouring port (4) provided on the storage tank (2), a casting mold (5) placed on the casting platform (1), the casting platform (1) driving the casting mold (5) to slide along the length direction of the casting platform (1), characterized in that: A heating assembly (7) is provided in the middle of the pouring platform (1). The heating assembly (7) includes a heating frame (71), a heating platform (72), and heating blocks (73). The heating frame (71) is fixed on the pouring platform (1), and the heating platform (72) is fixed on the heating frame (71). There are two heating blocks (73), which are slidably disposed on the heating platform (72). An electric heating wire (8) is provided inside the heating platform (72). The two ends of the heating wire (8) are electrically connected to the heating plug (73). The bottom of the casting mold (5) is provided with a heating slot (9). When the casting mold (5) slides to the heating platform (72), the heating plug (73) is inserted into the heating slot (9). The two heating slots (9) are connected by a wire (10). When the heating plug (73) is inserted into the heating slot (9), the heating wire (8) is energized, and the casting mold (5) is aligned with the pouring port (4).
2. The investment casting equipment for quantitative pouring of silica sol according to claim 1, characterized in that: A sliding plate (11) is slidably disposed inside the casting mold (5). An ejector block (12) is fixed on the sliding plate (11). The ejector block (12) is slidably disposed inside the heating slot (9). When the silica sol is filled into the casting mold (5), it drives the sliding plate (11) to slide. When the silica sol fills the casting mold (5), the ejector block (12) slides and drives the heating insert (73) to disengage from the heating slot (9).
3. The investment casting equipment for quantitative pouring of silica sol according to claim 2, characterized in that: The heating slot (9) has a conductive sheet (13) embedded in its side wall, and the two ends of the wire (10) are respectively connected to the conductive sheets (13) in the two heating slots (9).
4. The investment casting equipment for quantitative pouring of silica sol according to claim 3, characterized in that: A closing plate (14) is slidably provided at the opening of the casting mold (5), and the closing plate (14) opens or closes the opening of the casting mold (5) by sliding.
5. The investment casting equipment for quantitative pouring of silica sol according to claim 4, characterized in that: The casting mold (5) is provided with a driving mechanism (15), which includes a driving spring (151), a driving rod (152), a push rod (153), and a power rod (154). The driving spring (151) is located between the closing plate (14) and the casting mold (5). The driving spring (151) drives the closing plate (14) to slide and open the opening of the casting mold (5). The driving rod (152) is fixed on the closing plate (14). The push rod (153) is slidably located inside the casting mold (5). One end of the push rod (153) abuts against... Connected to the drive rod (152), the power rod (154) is slidably disposed in the casting mold (5) at one end away from the drive rod (152) of the top rod (153). One end of the power rod (154) abuts against the top rod (153), and the other end slides into the underside of the sliding plate (11). When the ejector block (12) slides and drives the heating insert (73) to disengage from the heating slot (9), the sliding plate (11) drives the power rod (154) to slide. The power rod (154) drives the top rod (153) to drive the drive rod (152) to drive the closing plate (14) to close the opening of the casting mold (5).
6. The investment casting equipment for quantitative pouring of silica sol according to claim 5, characterized in that: An adjusting bolt (16) is installed on the casting mold (5). The adjusting bolt (16) abuts against the side of the power rod (154) away from the sliding plate (11). The adjusting bolt (16) drives the power rod (154) away from the sliding plate (11).
7. The investment casting equipment for quantitative pouring of silica sol according to claim 6, characterized in that: A baffle (17) is slidably provided at the pouring port (4), and the baffle (17) opens or closes the pouring port (4) by sliding.
8. The investment casting equipment for quantitative pouring of silica sol according to claim 7, characterized in that: The pouring port (4) is equipped with a drive cylinder (18). The piston rod of the drive cylinder (18) is fixedly connected to the baffle (17). When the circuit of the heating wire (8) is turned on, the drive cylinder (18) drives the baffle (17) to open the pouring port (4). When the circuit of the heating wire (8) is turned off, the drive cylinder (18) drives the baffle (17) to close the pouring port (4).
9. The investment casting equipment for quantitative pouring of silica sol according to claim 8, characterized in that: The storage tank (2) is slidably disposed on the pouring platform (1), and the storage tank (2) slides along the height direction of the pouring platform (1).
10. A silica sol casting process, comprising the following steps: S1: Add silica sol, add silica sol into storage tank (2) and continuously heat the silica sol; S2: Installation of casting mold: Place casting mold (5) on casting platform (1) and convey casting mold (5) to heating component (7) by conveying. S3: Heating and pouring, the pouring mold (5) is heated by the heating component (7) to maintain the temperature of the pouring mold (5) and pouring is performed on the pouring mold (5); S4: Stop pouring quantitatively. When the silica sol in the pouring mold (5) reaches the preset weight, stop heating and stop pouring into the pouring mold (5). S5: Demolding by conveying the casting mold (5) to the outside of the casting table (1) for cooling and then demolding.