A casting mold for casting parts of a bell-type furnace

Abstract

The present invention relates to the technical field of mold design, and specifically to a casting mold for casting accessories of a bell jar furnace, which includes a mold opening and closing device. The mold opening and closing device includes a pair of support plates located at the upper and lower ends respectively, and the support plates are fixedly installed through connecting columns. A casting mold for casting accessories of a bell jar furnace can quickly replace different types of cavities by directly replacing the upper mold base and the lower mold base, so as to produce corresponding castings. In this way, structures such as the mold opening and closing device can be reused to reduce the mold development cost. Moreover, the upper mold base and the lower mold base can also be quickly fixed through a limit connection device, thereby improving the cavity replacement efficiency and facilitating flexible production quickly. It solves the problems that the existing molds cannot reuse structures such as mold opening and closing and the operation of replacing cavity models is cumbersome, and can effectively reduce the mold development cost and improve the cavity replacement efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of die design, and particularly to a casting die for casting accessories of a bell furnace. Background Art

[0002] A bell furnace is a smelting furnace with a liftable furnace body, mainly used for sintering tests. During the manufacturing process of the bell furnace, a large number of accessories need to be produced by casting. These accessories mainly include components such as the furnace body base, the transport trolley, the guide rail, and the furnace body columns. Since there are many types of such components, a large number of dies need to be made during casting production. Moreover, due to the large number of product models of the bell furnace, the sizes of the same type of accessories are different. Therefore, in traditional production, a set of dies needs to be designed separately for each different size of the accessory, resulting in high input costs.

[0003] The patent with the authorization announcement number CN2220497722U and the patent name of a die capable of replacing the cavity provides a die capable of replacing the cavity. Using this die can effectively reuse accessory structures such as the mold opening and closing structure on traditional dies, thus reducing the cost of die development. However, the fixed structure of this die is complex and it cannot achieve rapid replacement of the products to be produced.

[0004] Therefore, we need a casting die for casting accessories of a bell furnace to solve the problems that the existing die cannot reuse structures such as the mold opening and closing structure and the operation of replacing the cavity model is cumbersome, which can effectively reduce the die development cost and improve the cavity replacement efficiency. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems that the existing die cannot reuse structures such as the mold opening and closing structure and the operation of replacing the cavity model is cumbersome. The present application provides a casting die for casting accessories of a bell furnace, which can effectively reduce the die development cost and improve the cavity replacement efficiency.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A casting die for casting accessories of a bell furnace, comprising:

[0007] A mold opening and closing device, the mold opening and closing device includes a pair of support plates located at the upper and lower ends respectively, and the support plates are fixedly installed through connecting columns.

[0008] A fixing device, each of the two support plates is driven by a telescopic push rod to have a fixing device. An upper mold base is clamped and installed in the fixing device at the upper end of the mold opening and closing device through a limit connection device, and a lower mold base is fixed in the fixing device at the lower end of the mold opening and closing device through another limit connection device. The upper mold base and the lower mold base are controlled to open or close the mold by the mold opening and closing device, and a cavity for casting a casting is jointly formed between the upper mold base and the lower mold base. A gate connecting the cavity is provided on the upper mold base.

[0009] Preferably, the fixing device includes a fixing frame, and a sliding guiding seat for slidably mounting with the connecting column is integrally formed on the fixing frame.

[0010] Preferably, a limiting support for restricting the installation position of the upper die base or the lower die base is integrally formed on the fixing frame, and an intermediate support column for pressing against the middle part of the upper die base or the lower die base to prevent the upper die base or the lower die base from deforming is integrally formed on the fixing frame.

[0011] Preferably, the cross-section of the connecting column is a non-circular cross-section, and a limiting seat for restricting the movement position of the sliding guiding seat to position the upper die base and the lower die base is fixedly installed in the middle of the connecting column.

[0012] Preferably, the limiting connection device includes a pushing plate, a limiting plate is fixedly installed on the pushing plate, an insertion hole for slidably mounting with the limiting plate is formed on the fixing frame, and positioning connection holes for plugging and fixing with the limiting plate are formed on both the upper die base and the lower die base.

[0013] Preferably, a guiding rod is fixedly installed on the fixing frame, and a guiding cooperation hole for slidably mounting with the guiding rod is formed on the pushing plate.

[0014] Preferably, a clamping and adjusting device for driving the pushing plate to move is arranged on the fixing frame, and the clamping and adjusting device includes a fixing seat fixedly installed with the fixing frame, a guiding hole is formed on the fixing seat, a pushing rod slidably mounted with the guiding hole is fixedly installed on the pushing plate, a rack is formed on the pushing rod, a driving wheel meshing with the rack is rotatably installed on the fixing seat, a worm gear is coaxially fixedly installed on the driving wheel, a worm meshingly connected with the worm gear is rotatably installed on the fixing seat, and a hand wheel for conveniently rotating the worm is coaxially installed on the worm.

[0015] Preferably, cooling channels for cooling the cavity are arranged in both the upper die base and the lower die base, and a cooling device for supplying cooling liquid to the cooling channels is arranged on the pushing plate. The cooling device includes a docking insertion pipe fixedly installed on the pushing plate and inserted into the cooling channel, the docking insertion pipe is sealed with the inner wall of the cooling channel through a sealing ring, an insertion port for conveniently inserting the docking insertion pipe into the cooling channel is formed on the fixing frame, the docking insertion pipe is communicated with the cooling liquid circulation pipe through a cooling branch pipe, the cooling liquid circulation pipe is connected with an external cooling liquid circulation supply device, and a regulating valve for regulating the flow rate of the cooling liquid in the cooling branch pipe is fixedly installed on the cooling branch pipe.

[0016] Preferably, ejector pin devices for ejecting castings from the cavity are respectively arranged on the upper die base and the lower die base. The ejector pin device includes a main ejector pin slidably mounted on the upper die base or the lower die base. A limiting protrusion which is in limiting cooperation with the upper die base or the lower die base is fixedly mounted on the main ejector pin. The limiting protrusion is connected to the upper die base or the lower die base through a return spring. A pressing rod for pressing the main ejector pin is arranged on the support plate.

[0017] Preferably, the telescopic push rod is a hydraulic push rod or a ball screw type electric push rod. An auxiliary support for enhancing the structural strength is fixedly mounted between the support plate and the connecting column.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] A casting mold for casting parts of a bell jar furnace proposed by the present invention can quickly replace cavities of different models by directly replacing the upper die base and the lower die base, so as to produce corresponding castings. In this way, structures such as the mold opening and closing device can be reused, thereby reducing the mold development cost. In addition, the upper die base and the lower die base can be quickly fixed through the limiting connection device, thus improving the cavity replacement efficiency and facilitating flexible production. It solves the problems that the existing molds cannot reuse structures such as mold opening and closing and the operation of replacing cavity models is cumbersome, and can effectively reduce the mold development cost and improve the cavity replacement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present invention;

[0021] Figure 2 is a schematic structural diagram of the mold opening and closing device of the present invention;

[0022] Figure 3 is an installation schematic diagram of the fixing device and the lower die base of the present invention;

[0023] Figure 4 is a side view of the installation of the fixing device and the lower die base of the present invention;

[0024] Figure 5 is a schematic structural diagram of the fixing device of the present invention;

[0025] Figure 6 is an internal schematic diagram of the fixing device of the present invention;

[0026] Figure 7 is an installation schematic diagram of the cooling device and the limiting connection device of the present invention;

[0027] Figure 8 is a side view of the installation of the cooling device and the limiting connection device of the present invention;

[0028] Figure 9This is a structural cross-sectional view of the upper die base of the present invention.

[0029] In the figure: 1. Mold opening and closing device; 101. Support plate; 102. Auxiliary bracket; 103. Limit seat; 104. Connecting column; 105. Pressing rod; 106. Telescopic push rod; 2. Clamping and adjusting device; 201. Guide hole; 202. Fixed seat; 203. Driving wheel; 204. Worm gear; 205. Worm; 206. Handwheel; 3. Fixing device; 301. Sliding guide seat; 302. Guide rod; 303. Limit support; 304. Insertion port; 305. Fixing frame; 306. Insertion hole; 307. Intermediate support column; 4. Cooling device; 401. Regulating valve; 402. Docking insertion pipe; 403. Cooling branch pipe; 404. Sealing ring; 405. Coolant circulation pipe; 5. Limit connection device; 501. Pushing plate; 502. Guide fitting hole; 503. Limit plate; 504. Pushing rod; 505. Rack; 6. Ejector pin device; 601. Main ejector pin; 602. Limit protrusion; 603. Return spring; 7. Positioning connection hole; 8. Cooling channel; 9. Cavity; 10. Upper die base; 11. Lower die base; 12. Gate. Specific embodiments

[0030] In order to clearly and completely describe the purpose, technical solution of the present invention and make the advantages more clearly understood, the following further details the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of the embodiments, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0031] Embodiment 1: Please refer to Figures 1 to 9, the present invention provides a casting mold for casting accessories of a bell-type furnace, including an opening and closing mold device 1 and a fixing device 3. The opening and closing mold device 1 includes a pair of support plates 101 located at the upper and lower ends respectively, and the support plates 101 are fixedly installed through connecting columns 104. The support plates 101 can be fixed to the ground or other supporting devices through anchor bolts. A fixing device 3 is driven on each of the two support plates 101 by a telescopic push rod 106. The telescopic push rod 106 is a hydraulic push rod or a ball screw type electric push rod. The telescopic push rod 106 can also be replaced with a manual jack. An auxiliary support 102 for enhancing the structural strength is fixedly installed between the support plate 101 and the connecting column 104. The auxiliary support 102 is used to prevent the connecting column 104 from deforming, so as to ensure the structural stability of the opening and closing mold device 1. An upper mold base 10 is clamped and installed in the fixing device 3 at the upper end of the opening and closing mold device 1 through a limit connecting device 5, and a lower mold base 11 is fixed in the fixing device 3 at the lower end of the opening and closing mold device 1 through another limit connecting device 5. The opening and closing of the upper mold base 10 and the lower mold base 11 are controlled by the opening and closing mold device 1, and a cavity 9 for casting a casting is jointly formed between the upper mold base 10 and the lower mold base 11. A gate 12 connecting the cavity 9 is provided on the upper mold base 10. When casting is required, the two fixing devices 3 can be simultaneously pushed to the middle part of the connecting column 104 through the telescopic push rod 106, so that the upper mold base 10 and the lower mold base 11 respectively installed on the two fixing devices 3 can complete mold closing. Subsequently, pouring can be carried out into the cavity 9 through the gate 12. After the casting in the cavity 9 is cooled and formed, the two fixing devices 3 are respectively pulled upward and downward through the telescopic push rod 106, so that the upper mold base 10 and the lower mold base 11 respectively located on the two fixing devices 3 can complete mold opening, and the operator can take out the casting from the cavity 9.

[0032] Please refer to Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 9, the fixing device 3 includes a fixing frame 305, and a sliding guide seat 301 that is integrally formed on the fixing frame 305 and is slidably installed on the connecting column 104. A limit support 303 for restricting the installation position of the upper die holder 10 or the lower die holder 11 is integrally formed on the fixing frame 305. And an intermediate support column 307 for pressing against the middle part of the upper die holder 10 or the lower die holder 11 to prevent the upper die holder 10 or the lower die holder 11 from deforming is integrally formed on the fixing frame 305. The cross-section of the connecting column 104 is a non-circular cross-section, and a limit seat 103 for restricting the movement position of the sliding guide seat 301 to position the upper die holder 10 and the lower die holder 11 is fixedly installed in the middle of the connecting column 104. By slidingly installing the fixing frame 305 on the connecting column 104 using the sliding guide seat 301, it can effectively guide the fixing device 3 to move along the connecting column 104, thus avoiding the fixing device 3 from shaking during movement and causing misalignment when the upper die holder 10 and the lower die holder 11 are closed, effectively avoiding casting defects caused by misalignment during mold closing. At the same time, the intermediate support column 307 provided on the fixing frame 305 for supporting the middle part of the upper die holder 10 or the lower die holder 11 can also effectively prevent the middle part of the upper die holder 10 and the lower die holder 11 from deforming during the casting process, which may lead to a decrease in the casting accuracy of the casting, further ensuring the casting quality of the casting. The limit seat 103 can be used to limit the movement positions of the two fixing devices 3, so as to ensure that the upper die holder 10 and the lower die holder 11 are closed at the correct positions, avoiding the problem that the fixing frame 305 cannot move precisely into place due to the lack of a positioning structure for the fixing frame 305, resulting in the upper die holder 10 and the lower die holder 11 being unable to close correctly. Pressure sensors for detecting the contact pressure between the sliding guide seat 301 and the limit seat 103 can also be installed at the upper and lower ends of the limit seat 103, so as to indirectly measure the mold closing pressure between the upper die holder 10 and the lower die holder 11 using the pressure sensors, and then precisely close the upper die holder 10 and the lower die holder 11.

[0033] Please refer to Figure 1 , Figure 3 , Figure 4 , Figure 7 , Figure 8 and Figure 9, the limit connection device 5 includes a push plate 501, and a limit plate 503 is fixedly installed on the push plate 501. An insertion hole 306 for slidably installing the limit plate 503 is formed on the fixed frame 305. Positioning connection holes 7 for plugging and fixing the limit plate 503 are formed on both the upper die base 10 and the lower die base 11. A guide rod 302 is fixedly installed on the fixed frame 305, and a guide fitting hole 502 for slidably installing the guide rod 302 is formed on the push plate 501. By pushing and pulling the push plate 501 to make the push plate 501 move along the guide rod 302, the limit plate 503 can be inserted into the positioning connection hole 7, so as to achieve the purpose of fixing the upper die base 10 or the lower die base 11 on the fast fixing device 3 by using the limit connection device 5.

[0034] In this embodiment, different types of cavities 9 can be quickly replaced by directly replacing the upper die base 10 and the lower die base 11, so as to produce corresponding castings. In this way, structures such as the die opening and closing device 1 can be reused to reduce the mold development cost. In addition, the upper die base 10 and the lower die base 11 can also be quickly fixed by the limit connection device 5, thereby improving the replacement efficiency of the cavity 9, facilitating rapid flexible production, solving the problems that the existing molds cannot reuse structures such as die opening and closing and the operation of replacing the cavity type is cumbersome, and effectively reducing the mold development cost and improving the cavity replacement efficiency.

[0035] Embodiment Two: Please refer to Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6, on the basis of the first embodiment, a clamping and adjusting device 2 for driving the movement of the pushing plate 501 is provided on the fixing frame 305. The clamping and adjusting device 2 includes a fixing seat 202 fixedly installed on the fixing frame 305. A guiding hole 201 is formed on the fixing seat 202. A pushing rod 504 slidably installed in the guiding hole 201 is fixedly installed on the pushing plate 501. A rack 505 is formed on the pushing rod 504. A driving wheel 203 meshed with the rack 505 is rotatably installed on the fixing seat 202. A worm gear 204 is coaxially and fixedly installed on the driving wheel 203. A worm 205 meshed with the worm gear 204 is rotatably installed on the fixing seat 202. A hand wheel 206 for conveniently rotating the worm 205 is coaxially installed on the worm 205. An operator can drive the movement of the worm 205 by manually rotating the hand wheel 206. Subsequently, the worm 205 will drive the rotation of the worm gear 204. The worm gear 204 will drive the coaxial driving wheel 203 to rotate. The driving wheel 203 can drive the movement of the pushing rod 504 through meshing with the rack 505, thereby driving the movement of the pushing plate 501. In this way, the clamping process of the limiting plate 503 on the upper die base 10 or the lower die base 11 can be controlled by using the hand wheel 206. Moreover, the worm and worm gear mechanism composed of the worm gear 204 and the worm 205 also has a self-locking function, which can effectively prevent the limiting plate 503 from sliding out of the positioning connection hole 7 during operation, improving the reliability of the equipment. Further, it solves the problem that the existing mold cannot reuse the opening and closing die structures and the operation of changing the cavity model is cumbersome, and can effectively reduce the mold development cost and improve the cavity replacement efficiency.

[0036] Embodiment Three: Please refer to Figure 1 , Figure 3 , Figure 4 , Figure 7 and Figure 8, on the basis of Embodiment 2, cooling channels 8 for cooling the cavity 9 are provided in both the upper die base 10 and the lower die base 11, and a cooling device 4 for supplying coolant to the cooling channels 8 is provided on the push plate 501. The cooling device 4 includes a docking insertion tube 402 fixedly installed on the push plate 501 and inserted into the cooling channel 8, and the docking insertion tube 402 is sealed with the inner wall of the cooling channel 8 through a sealing ring 404. An insertion port 304 is provided on the fixed frame 305 to facilitate the insertion of the docking insertion tube 402 into the cooling channel 8, and the docking insertion tube 402 is connected to the coolant circulation tube 405 through a cooling branch tube 403. The coolant circulation tube 405 is connected to an external coolant circulation supply device, and a regulating valve 401 for adjusting the coolant flow rate in the cooling branch tube 403 is fixedly installed on the cooling branch tube 403. In order to better achieve the cooling of the casting, the number of cooling channels 8 provided in the upper die base 10 and the lower die base 11 of different models will be determined according to the specific casting. The head and tail ends of each cooling channel 8 are connected between a pair of docking insertion tubes 402 respectively used for supplying and discharging coolant. The docking insertion tubes 402 are connected to the coolant circulation tube 405 through the cooling branch tubes 403, and then the coolant is circulated between the cooling channels 8 and the external coolant circulation supply device through the coolant circulation tube 405. An independent regulating valve 401 is provided on each cooling branch tube 403, and the flow rate of the coolant provided by the cooling branch tube 403 can be adjusted through this regulating valve 401, so that different flow rates can be provided for different cooling channels 8 in this way. In this way, different heat exchange effects can be provided for different parts of the casting through multiple cooling channels 8 according to the shape of the casting, and then the casting can be evenly cooled in each area, avoiding the problem of excessive internal stress caused by different cooling times of different parts of the casting. Moreover, the installation process of the cooling device 4 can be directly driven by the limit connection device 5 without the need to additionally add a fixing structure. Therefore, the installation and disassembly methods are simple, and the replacement efficiency of the upper die base 10 and the lower die base 11 is improved. Further solving the problem that the existing mold cannot reuse the opening and closing die and other structures and the operation of changing the cavity model is cumbersome, it can effectively reduce the mold development cost and improve the cavity replacement efficiency.

[0037] Embodiment 4: Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 9, on the basis of the second embodiment, ejector pin devices 6 for ejecting the casting from the cavity 9 are respectively arranged on the upper die base 10 and the lower die base 11. The ejector pin device 6 includes a main ejector pin 601 slidably mounted on the upper die base 10 or the lower die base 11. A limit projection 602 which is in limit fit with the upper die base 10 or the lower die base 11 is fixedly mounted on the main ejector pin 601. The limit projection 602 is connected to the upper die base 10 or the lower die base 11 through a return spring 603. A pressing rod 105 for pressing the main ejector pin 601 is arranged on the support plate 101. When the upper die base 10 and the lower die base 11 are in the closed die state, at this time the main ejector pin 601 will no longer be subjected to the extrusion force from the pressing rod 105. In this way, the return spring 603 can be used to push the limit projection 602 to fit to the preset limit position on the upper die base 10 and the lower die base 11, so that the end of the main ejector pin 601 can be fitted with the bottom of the cavity 9, thus avoiding the main ejector pin 601 from interfering with the normal casting of the casting. When it is necessary to open the die for the casting, the upper die base 10 and the lower die base 11 will be pulled to a position close to the support plate 101 under the drive of the telescopic push rod 106. At this time, the pressing rod 105 will also press on the end of the main ejector pin 601, so that the main ejector pin 601 will gradually insert into the cavity 9 and will gradually push out from the cavity 9, so that it is convenient for the operator to take out the casting from the cavity 9. In this way, the working state of the main ejector pin 601 can be directly controlled by the telescopic push rod 106 without additionally increasing an ejection drive structure, thus simplifying the structure of the equipment and increasing the reliability of the equipment. Further, the problem that the existing mold cannot reuse the die opening and closing structures and the operation of replacing the cavity model is cumbersome is solved, and the mold development cost can be effectively reduced and the cavity replacement efficiency can be improved.

[0038] Embodiment 5: On the basis of Embodiment 4, the present invention further provides a use method of a casting mold for casting a bell jar furnace fitting, including the following steps:

[0039] Step 1: First, select the corresponding models of the upper die base 10 and the lower die base 11 according to the different bell jar furnace fittings to be cast. The operator pushes the limit plate 503 to a non-working position through the hand wheel 206, and then presses the upper die base 10 and the lower die base 11 into the corresponding fixing frames 305 respectively until they contact the limit supports 303 at the corresponding positions. Subsequently, the hand wheel 206 is rotated reversely so that the limit plate 503 is inserted into the corresponding positioning connection holes 7 to fix the upper die base 10 and the lower die base 11. At the same time, the docking insertion tube 402 will also be correctly inserted into the corresponding cooling flow channels 8. Subsequently, the operator adjusts each regulating valve 401 according to the cooling requirements of the corresponding models of the upper die base 10 and the lower die base 11 so that the corresponding cooling flow channels 8 can accurately obtain the required flow rate of the coolant;

[0040] Step 2: Subsequently, the operator checks the cavities 9 in the upper die holder 10 and the lower die holder 11, removes the dust inside the cavities 9, and cleans the positions where the upper die holder 10 and the lower die holder 11 need to be fitted. Then, the operator pushes the two fixing devices 3 closer to each other through the telescopic push rod 106, so that the upper die holder 10 and the lower die holder 11 can be closed. At this time, the operator checks whether the upper die holder 10 and the lower die holder 11 are correctly closed. After the upper die holder 10 and the lower die holder 11 are correctly closed, the pouring process can be entered;

[0041] Step 3: When pouring, the operator first pours the molten metal into the cavity 9 from the gate 12, and then supplies the coolant to the cooling channels 8 through the external coolant circulation supply device. Different types of castings require different cooling times. After waiting for the corresponding time according to the type of casting to be manufactured, the external coolant circulation supply device stops supplying the coolant. Then, the operator uses the telescopic push rod 106 to drive the upper die holder 10 and the lower die holder 11 to move towards the positions close to the two support plates 101 respectively, so as to open the die. At this time, the pressing rod 105 also presses the main ejector pin 601, so that the casting is pushed out of the cavity 9 by the main ejector pin 601. Then, the operator takes out the casting from the cavity 9 and the next round of casting can be entered.

[0042] Although the above describes the illustrative specific embodiments of the present application for the convenience of those skilled in the art to understand the present application, the present application is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present application defined and determined by the appended claims, all the application creations using the concept of the present application are within the scope of protection.

Claims

1. A casting mold for bell furnace accessories, characterized in that: include: A mold opening and closing device (1), the mold opening and closing device (1) comprising a pair of support plates (101) located at upper and lower ends respectively, and the support plates (101) are fixedly mounted via connecting columns (104); A fixing device (3), wherein each of the two support plates (101) is driven by a telescopic push rod (106), an upper die seat (10) is mounted in the fixing device (3) at the upper end of the mold opening and closing device (1) via a limit connection device (5), and a lower die seat (11) is fixed in the fixing device (3) at the lower end of the mold opening and closing device (1) via another limit connection device (5), the upper die seat (10) and the lower die seat (11) are controlled to open or close the mold via the mold opening and closing device (1), and a mold cavity (9) for casting a casting is formed between the upper die seat (10) and the lower die seat (11), and a gate (12) connected to the mold cavity (9) is provided on the upper die seat (10). The fixing device (3) comprises a fixing frame (305), and a sliding guide seat (301) is integrally formed on the fixing frame (305) and is slidably mounted with the connecting column (104); the limiting connection device (5) comprises a pushing plate (501), and a limiting plate (503) is fixedly mounted on the pushing plate (501), and an insertion hole (306) is provided on the fixing frame (305) and is slidably mounted with the limiting plate (503), and the upper die seat (10) and the lower die seat (11) are both provided with a positioning connection hole (7) that is plugged and fixed with the limiting plate (503); a clamping adjustment device (2) is provided on the fixing frame (305) for driving the pushing plate (501) to move, and the clamping adjustment device (2) comprises a fixing hole (306) that is slidably mounted with the limiting plate (503). A fixed seat (202) is fixedly mounted on the fixed frame (305), and a guide hole (201) is provided on the fixed seat (202); a push rod (504) is fixedly mounted on the push plate (501) and is slidably mounted on the guide hole (201), and a rack (505) is provided on the push rod (504); a driving wheel (203) is rotatably mounted on the fixed seat (202) and is meshed with the rack (505), and a worm wheel (204) is coaxially fixedly mounted on the driving wheel (203); a worm (205) is rotatably mounted on the fixed seat (202) and is meshed with the worm wheel (204), and a hand wheel (206) is coaxially mounted on the worm wheel (205) for conveniently rotating the worm wheel (205).

2. A casting mold for bell furnace accessories according to claim 1, characterized in that: The fixing frame (305) is integrally formed with a limit support (303) for limiting the installation position of the upper die seat (10) or the lower die seat (11), and the fixing frame (305) is integrally formed with an intermediate support column (307) for pressing against the middle of the upper die seat (10) or the lower die seat (11) to prevent deformation of the upper die seat (10) or the lower die seat (11).

3. A casting mold for bell furnace accessories according to claim 1, characterized in that: The cross section of the connecting column (104) is a non-circular cross section, and a limiting seat (103) is fixedly installed in the middle of the connecting column (104) for limiting the movement position of the sliding guide seat (301) so as to position the upper die seat (10) and the lower die seat (11).

4. A casting mold for bell furnace accessories according to claim 3, characterized in that: A guide rod (302) is fixedly mounted on the fixing frame (305), and a guide matching hole (502) for slidingly mounting with the guide rod (302) is provided on the pushing plate (501).

5. The casting mold for bell furnace accessories according to claim 1, characterized in that: The upper die seat (10) and the lower die seat (11) are both provided with a cooling channel (8) for cooling the mold cavity (9), and the push plate (501) is provided with a cooling device (4) for supplying cooling liquid to the cooling channel (8), the cooling device (4) comprising a butt-joint insertion tube (402) fixedly mounted on the push plate (501) and inserted into the cooling channel (8), and the butt-joint insertion tube (402) is connected to the inner wall of the cooling channel (8) through a sealing ring (404). The wall is sealed, and an insertion port (304) is provided on the fixing frame (305) for facilitating the insertion of the docking insertion tube (402) into the cooling channel (8), and the docking insertion tube (402) is connected to the coolant circulation tube (405) through the cooling branch tube (403), and the coolant circulation tube (405) is connected to an external coolant circulation supply device, and a regulating valve (401) for regulating the flow rate of the coolant in the cooling branch tube (403) is fixedly installed on the cooling branch tube (403).

6. The casting mold for bell furnace accessories according to claim 1, characterized in that: The upper die base (10) and the lower die base (11) are respectively provided with an ejector device (6) for ejecting the casting from the cavity (9), and the ejector device (6) comprises a main ejector (601) slidably mounted on the upper die base (10) or the lower die base (11), and a limiting protrusion (602) which is limitedly matched with the upper die base (10) or the lower die base (11) is fixedly mounted on the main ejector (601), and the limiting protrusion (602) is connected to the upper die base (10) or the lower die base (11) via a return spring (603), and a pressing rod (105) for pressing the main ejector (601) is provided on the support plate (101).

7. The casting mold for bell furnace accessories according to claim 1, characterized in that: The telescopic push rod (106) is a hydraulic push rod or a ball screw type electric push rod, and an auxiliary bracket (102) for enhancing structural strength is fixedly installed between the support plate (101) and the connecting column (104).

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