A triplex GIS shell metal die casting mold

Abstract

The application provides a triple GIS shell metal mold casting mold, and relates to the technical field of casting molds, which comprises a casting bottom mold piece, a sand core assembly is arranged above the casting bottom mold piece; the sand core assembly is used for forming a triple GIS shell flange; a wedge block positioning piece is installed on the casting bottom mold piece; casting mold body pieces are arranged on both sides of the sand core assembly, and the casting mold body pieces are used for being installed on a casting machine; an exhaust shunt piece is adopted, and after the second electromagnetic valve is opened, external vacuum pumps can be used for pumping, exhaust is promoted, and liquid inlet efficiency is improved; and the problem that the current triple GIS shell casting mold cannot automatically control active exhaust to prevent air holes before casting is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of casting mold, in particular to a triple GIS shell metal mold casting mold. BACKGROUND

[0002] The gas insulated metal enclosed switchgear (GIS) shell needs to have high precision and air tightness, mainly adopts aluminum, and is filled with sulfur hexafluoride gas inside, which is used to provide a sealed environment, insulation support and mechanical protection, to ensure the safe operation of high-voltage electrical components, such as circuit breakers, disconnectors and other equipment. The GIS shell usually needs to be cast into shape by a sand core casting mold. The current GIS shell casting mold has difficulty in forming the flange when casting and processing the triple GIS shell. If the movable block forming method is used, it is not convenient to automatically prompt complete installation when manually installing multiple movable blocks. Once there is an omission, it will directly affect the casting quality and produce defective products. Meanwhile, forgetting to disassemble the movable block during demolding will also directly cause damage to the equipment. The traditional casting mold usually needs to use a silicon-carbon alloy exhaust plug containing micropores for exhaust. Although it can avoid leakage, the exhaust is not smooth, it is difficult to automatically control active exhaust before casting, and it is easy to produce hollow, which affects the casting quality. SUMMARY

[0003] The present application relates to a triple GIS shell metal mold casting mold to solve the problem of the current triple GIS shell casting mold which is not convenient to automatically control active exhaust before casting.

[0004] In the first aspect of the present application, a triple GIS shell metal mold casting mold is provided, which specifically comprises a casting bottom mold piece, a sand core assembly is arranged above the casting bottom mold piece; the sand core assembly is used for forming a triple GIS shell flange; a wedge block positioning piece is installed on the casting bottom mold piece; a casting mold body piece is arranged on both sides of the sand core assembly, and the casting mold body piece is used for installation on a casting machine; an exhaust shunt piece is installed on the casting mold body piece; a casting prompt piece is installed on the casting mold body piece; the casting mold body piece comprises a first forming mold and a second forming mold; the casting bottom mold piece comprises a forming bottom mold and a hydraulic cylinder, and a casting liquid inlet is arranged in the middle of the forming bottom mold; the forming bottom mold is used for fixed installation on the casting machine through bolts, and the forming bottom mold is connected with a low-pressure forming liquid inlet pipe; the hydraulic cylinder is fixedly installed on the forming bottom mold.

[0005] In at least some embodiments, the casting bottom mold piece further comprises a bottom mold stop plate, the bottom mold stop plate is inserted into the forming bottom mold; the end of the bottom mold stop plate is a beveled structure; the bottom mold stop plate is an L-shaped structure; the bottom mold stop plate stops and fits the liquid inlet on the forming bottom mold; the output shaft of the hydraulic cylinder is fixedly installed with the bottom mold stop plate.

[0006] In at least some embodiments, the sand core assembly comprises: a casting sand core, a first forming ring, a second forming ring and a third forming ring, the casting sand core is located above the forming bottom mold; three first forming rings are arranged on the casting sand core, and each of the three first forming rings is composed of two arc-shaped blocks; six second forming rings are arranged on the casting sand core, and each of the six second forming rings is composed of three arc-shaped blocks, and the joint of the three arc-shaped blocks of the second forming ring is T-shaped; three third forming rings are arranged on the casting sand core, and each of the three third forming rings is composed of four arc-shaped blocks; a casting flow interval is arranged between the outer wall of the casting sand core and the first forming ring, the second forming ring and the third forming ring.

[0007] In at least some embodiments, the sand core assembly further comprises: a convex column forming block, two convex column forming blocks are arranged on the outer side of the casting sand core, and each of the two convex column forming blocks is used for inserting the first forming mold and the second forming mold; a casting flow interval is arranged between the outer side of the casting sand core and the two convex column forming blocks; the second forming ring and the third forming ring are used for sliding insertion into the first forming mold; the first forming ring is used for sliding insertion into the second forming mold; the two sides of the casting sand core are used for sleeving on the first forming mold and the second forming mold.

[0008] In at least some embodiments, the wedge positioning member comprises: a positioning shaft, a wedge groove and a fixed wedge, a positioning shaft is threadedly connected to each of the first forming ring, the second forming ring and the third forming ring, and at least one positioning shaft is arranged on each arc-shaped block of the first forming ring, the second forming ring and the third forming ring; a hexagonal hole is arranged at the end of the positioning shaft; a wedge groove is arranged on the positioning shaft; two rows of positioning shafts arranged on the first forming ring are used for sliding insertion into the second forming mold; six rows of positioning shafts arranged on the second forming ring and the third forming ring are used for sliding insertion into the first forming mold; a fixed wedge is inserted into the wedge groove, and the fixed wedge is a slope structure.

[0009] In at least some embodiments, a through hole is arranged on each of the first forming mold and the second forming mold, and the first forming mold and the second forming mold are used for mounting on a casting machine; the bottom of the first forming mold and the bottom of the second forming mold are flush with the top of the forming bottom mold.

[0010] In at least some embodiments, the casting mold piece further comprises: an exhaust channel, an end face arc block, a wedge block switch, and a prompt light, three end face arc blocks are fixedly installed on the first forming mold and the second forming mold respectively; two exhaust channels are formed on the second forming mold; the exhaust channels are used for exhausting; six rows of wedge block switches are fixedly embedded on the first forming mold; two rows of wedge block switches are fixedly embedded on the second forming mold; the wedge block switches are used for detecting that the fixed wedge blocks are installed in place; the first forming mold and the second forming mold are respectively fixedly installed with prompt lights; two prompt lights are respectively electrically connected with the wedge block switches embedded on the first forming mold and the second forming mold.

[0011] In at least some embodiments, the exhaust shunt piece comprises: an exhaust pipe, a silicon-carbon alloy exhaust plug, a first electromagnetic valve, and a second electromagnetic valve, the exhaust pipe is fixedly installed on the end face arc block located in the middle of the second forming mold; the silicon-carbon alloy exhaust plug is threadedly connected to the end face arc block located in the middle of the second forming mold, and the silicon-carbon alloy exhaust plug is provided with exhaust micropores; the first electromagnetic valve is fixedly installed on the exhaust pipe; the second electromagnetic valve is fixedly installed on the side of the exhaust pipe, and the second electromagnetic valve is externally connected with a vacuum pump.

[0012] In at least some embodiments, the casting prompt piece comprises: a prompt installation cylinder, a warning light, and an electrical connection strip, the prompt installation cylinder is threadedly connected to the end face arc block located in the middle of the second forming mold; the warning light is fixedly installed on the top of the end face arc block located in the middle of the second forming mold; two electrical connection strips are fixedly installed on the inner side of the prompt installation cylinder; the two electrical connection strips, the warning light, the first electromagnetic valve, and the second electromagnetic valve are connected in series with a power supply.

[0013] In at least some embodiments, the casting prompt piece further comprises: a lifting float, a return spring, and an electrical connection piece, the lifting float is slidingly sleeved on the prompt installation cylinder; the lifting float has a hollow structure; the return spring is sleeved in the prompt installation cylinder and connected between the lifting float and the prompt installation cylinder; the electrical connection piece is fixedly installed on the top of the lifting float and is an elastic steel piece; the electrical connection piece is used for adhering to the two electrical connection strips.

[0014] The application provides a triple GIS shell metal mold casting mold, which has the following beneficial effects:

[0015] In the application, the sand core assembly can utilize the multi-petal structure of the first forming ring, the second forming ring, and the third forming ring to facilitate forming of a GIS shell flange; the bottom mold stop plate can facilitate closing of a liquid inlet on the bottom mold after low-pressure forming and casting is completed, facilitate backflow and heat preservation of aluminum liquid, and reduce the amount of residual nozzle.

[0016] In addition, the wedge positioning member can facilitate positioning of the first forming ring, the second forming ring and the third forming ring, and can ensure the stability of the first forming ring, the second forming ring and the third forming ring after clamping; cooperating with the wedge switch, the automatic detection after the installation of each fixed wedge can automatically prompt, which can effectively avoid the manual forgetting of the installation of the fixed wedge, and can intuitively prompt, especially for the structure with more fixed wedges, which can effectively avoid the missing installation of the fixed wedge and affect the casting forming quality of the GIS shell.

[0017] In addition, the exhaust shunt member can facilitate the suction of the external vacuum pump after the second electromagnetic valve is opened, promote the exhaust, improve the liquid inlet efficiency, and make the casting more efficient, while avoiding the early cooling of the aluminum liquid and affecting the uniformity of the GIS shell casting. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below.

[0019] The drawings described in the following description only relate to some embodiments of the present application, and are not a limitation of the present application.

[0020] In the drawings:

[0021] Figure 1 A schematic diagram of the overall structure of a triple GIS shell metal mold casting mold of the present application is shown;

[0022] Figure 2 A cross-sectional view of the internal structure of a triple GIS shell metal mold casting mold of the present application is shown;

[0023] Figure 3 A schematic diagram of the overall structure of a casting bottom mold member of the present application is shown;

[0024] Figure 4 A schematic diagram of the overall structure of a casting mold member of the present application is shown; Figure 1 An enlarged view of the G region structure of the present application is shown;

[0025] Figure 5 A schematic diagram of the overall structure of a sand core assembly of the present application is shown;

[0026] Figure 6 A schematic diagram of the overall structure of a sand core assembly of the present application is shown; Figure 1 An enlarged view of the B region structure of the present application is shown;

[0027] Figure 7 A schematic diagram of the overall structure of a casting mold member of the present application is shown;

[0028] Figure 8 A schematic view showing the installation position of the silicon-carbon alloy exhaust plug of the present application is shown in FIG. 6. Figure 7 A structure enlarged view of region C in FIG. 6 is shown in FIG. 7.

[0029] Figure 9 A schematic view showing the installation position of the silicon-carbon alloy exhaust plug of the present application is shown in FIG. 6. Figure 2 A structure enlarged view of region D in FIG. 6 is shown in FIG. 8.

[0030] Figure 10 A schematic view showing the installation position of the silicon-carbon alloy exhaust plug of the present application is shown in FIG. 6.

[0031] Figure 11 A structure enlarged view of region F in FIG. 6 is shown in FIG. 10. Figure 10 A structure enlarged view of region F in FIG. 6 is shown in FIG. 10.

[0032] Figure 12 A schematic view showing the installation position of the silicon-carbon alloy exhaust plug of the present application is shown in FIG. 6.

[0033] A list of reference signs is shown in FIG. 11.

[0034] 1, a casting bottom mold piece; 101, a forming bottom mold; 102, a hydraulic cylinder; 103, a bottom mold stop plate; 2, a sand core assembly; 201, a casting sand core; 202, a first forming ring; 203, a second forming ring; 204, a third forming ring; 205, a convex column forming block; 3, a wedge positioning piece; 301, a positioning shaft; 3011, a wedge groove; 302, a fixed wedge; 4, a casting mold piece; 401, a first forming mold; 402, a second forming mold; 4021, an exhaust passage; 403, an end face arc block; 404, a wedge switch; 405, a prompt light; 5, an exhaust shunt piece; 501, an exhaust pipe; 502, a silicon-carbon alloy exhaust plug; 503, a first electromagnetic valve; 504, a second electromagnetic valve; 6, a casting prompt piece; 601, a prompt installation cylinder; 602, a warning light; 603, an electricity receiving strip; 604, a lifting float; 6041, a reset spring; 605, an electricity receiving piece. DETAILED DESCRIPTION

[0035] In order to make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort belong to the scope of protection of the present application.

[0036] Embodiment one: please refer to Figures 1 to 12 :

[0037] The application provides a triplex GIS shell metal mold casting mold, which comprises a casting bottom mold piece 1, a sand core assembly 2 arranged above the casting bottom mold piece 1, the sand core assembly 2 is used for forming a flange of the triplex GIS shell, a wedge block positioning piece 3 is arranged on the casting bottom mold piece 1, casting mold body pieces 4 are arranged on both sides of the sand core assembly 2, the casting mold body pieces 4 are used for being installed on a casting machine, exhaust shunt pieces 5 are installed on the casting mold body pieces 4, casting prompt pieces 6 are installed on the casting mold body pieces 4, the casting mold body pieces 4 comprise first forming molds 401 and second forming molds 402, the casting bottom mold piece 1 comprises a forming bottom mold 101 and a hydraulic cylinder 102, the middle part of the forming bottom mold 101 is provided with a casting liquid inlet, the forming bottom mold 101 is used for being fixedly installed on the casting machine through bolts, and the forming bottom mold 101 is communicated with a low-pressure forming liquid inlet pipe, and the hydraulic cylinder 102 is fixedly installed on the forming bottom mold 101.

[0038] The casting bottom mold piece 1 further comprises a bottom mold stop plate 103, the bottom mold stop plate 103 is inserted on the forming bottom mold 101, the end of the bottom mold stop plate 103 is a bevel structure, the bottom mold stop plate 103 is an L-shaped structure, the bottom mold stop plate 103 stops and fits the liquid inlet on the forming bottom mold 101, and the bottom mold stop plate 103 is fixedly installed on the output shaft of the hydraulic cylinder 102. The sand core assembly 2 comprises a casting sand core 201, a first forming ring 202, a second forming ring 203 and a third forming ring 204, and the casting sand core 201 is located above the forming bottom mold 101; three first forming rings 202 are arranged on the casting sand core 201, and each of the three first forming rings 202 is composed of two arc-shaped blocks; six second forming rings 203 are arranged on the casting sand core 201, and each of the six second forming rings 203 is composed of three arc-shaped blocks, and the joint of the three arc-shaped blocks of the second forming ring 203 is T-shaped; three third forming rings 204 are arranged on the casting sand core 201, and each of the three third forming rings 204 is composed of four arc-shaped blocks; a casting flow interval is arranged between the outer wall of the casting sand core 201 and the first forming ring 202, the second forming ring 203 and the third forming ring 204; the sand core assembly 2 further comprises a convex column forming block 205, two convex column forming blocks 205 are arranged on the outside of the casting sand core 201, and each of the two convex column forming blocks 205 is used for inserting the first forming mold 401 and the second forming mold 402; a casting flow interval is arranged between the outside of the casting sand core 201 and the two convex column forming blocks 205; the second forming ring 203 and the third forming ring 204 are used for slidingly inserting into the first forming mold 401; the first forming ring 202 is used for slidingly inserting into the second forming mold 402; the two sides of the casting sand core 201 are used for sleeving on the first forming mold 401 and the second forming mold 402, and the multi-piece structure of the first forming ring 202, the second forming ring 203 and the third forming ring 204 can be used to conveniently form the GIS shell flange, and the GIS shell forming integration can be improved, the GIS shell processing and manufacturing efficiency can be effectively improved, and the bottom mold stop plate 103 can be used to conveniently close the liquid inlet on the forming bottom mold 101 after low-pressure forming casting is completed, the aluminum liquid backflow heat preservation is facilitated, and there is no need to continuously supply pressure preservation, and the structure control is simple.

[0039] In the embodiments of the present disclosure, the wedge positioning member 3 comprises a positioning shaft 301, a wedge groove 3011 and a fixed wedge 302, the first forming ring 202, the second forming ring 203 and the third forming ring 204 are respectively threadedly connected with the positioning shaft 301, and at least one positioning shaft 301 is installed on each arc block of the first forming ring 202, the second forming ring 203 and the third forming ring 204; the end of the positioning shaft 301 is provided with a hexagonal hole; the positioning shaft 301 is provided with the wedge groove 3011; the two rows of positioning shafts 301 installed on the first forming ring 202 are used for being slidably inserted on the second forming die 402; the six rows of positioning shafts 301 installed on the second forming ring 203 and the third forming ring 204 are used for being slidably inserted on the first forming die 401; the fixed wedge 302 is inserted on the wedge groove 3011, and the fixed wedge 302 is a beveled structure; the first forming die 401 and the second forming die 402 are respectively provided with through holes, and the first forming die 401 and the second forming die 402 are respectively used for being installed on a casting machine; the bottoms of the first forming die 401 and the second forming die 402 are respectively flush with the top of the forming bottom die 101; the casting die body member 4 further comprises an exhaust passage 4021, an end face arc block 403, a wedge switch 404 and a prompt lamp 405, three end face arc blocks 403 are fixedly installed on the first forming die 401 and the second forming die 402 respectively; two exhaust passages 4021 are formed on the second forming die 402; the exhaust passage 4021 is used for exhausting; six rows of wedge switches 404 are fixedly embedded on the first forming die 401; two rows of wedge switches 404 are fixedly embedded on the second forming die 402; the wedge switch 404 is used for detecting that the fixed wedge 302 is installed in place; the prompt lamp 405 is fixedly installed on the first forming die 401 and the second forming die 402 respectively; the two prompt lamps 405 are electrically connected with the wedge switches 404 embedded on the first forming die 401 and the second forming die 402 respectively; the wedge positioning member 3 can be used for positioning the first forming ring 202, the second forming ring 203 and the third forming ring 204, can ensure the stability of the first forming ring 202, the second forming ring 203 and the third forming ring 204 after being combined, and the structure adopts the fixed wedge 302 positioning mode which is faster and simpler to operate, and cooperates with the wedge switch 404 to automatically detect and automatically prompt after each fixed wedge 302 is installed in place, can avoid forgetting to install the fixed wedge 302 by manual operation, and intuitively prompts; especially for the structure with more fixed wedges 302, the installation of the fixed wedge 302 can be effectively avoided to be missed, and the casting forming quality of the GIS shell is affected, and even a safety hazard is caused.The positioning shafts 301 can pass through the first forming die 401 and the second forming die 402, at this time, the fixed wedge blocks 302 can be inserted into the wedge block grooves 3011, at this time, the inclined side of the fixed wedge blocks 302 is pressed on the inner side of the wedge block grooves 3011, the inner side of each fixed wedge block 302 is attached to the first forming die 401 and the second forming die 402, the arc-shaped blocks of the first forming ring 202, the second forming ring 203 and the third forming ring 204 are positioned and assembled, and the subsequent casting is ensured to be stable; after each fixed wedge block 302 is attached to the first forming die 401 and the second forming die 402, each wedge block switch 404 is also pressed, and the control of the two indicator lights 405 is realized to be brightened to prompt.

[0040] In the second embodiment, on the basis of the first embodiment, the exhaust shunt 5 comprises an exhaust pipe 501, a silicon-carbon alloy exhaust plug 502, a first electromagnetic valve 503, and a second electromagnetic valve 504. The exhaust pipe 501 is fixedly installed on the end face arc block 403 located in the middle of the second forming die 402. The silicon-carbon alloy exhaust plug 502 is threadedly connected to the end face arc block 403 located in the middle of the second forming die 402, and the silicon-carbon alloy exhaust plug 502 is provided with exhaust micro-holes. The first electromagnetic valve 503 is fixedly installed on the exhaust pipe 501. The second electromagnetic valve 504 is fixedly installed on the side of the exhaust pipe 501, and the second electromagnetic valve 504 is connected with a vacuum pump. The casting prompt 6 comprises a prompt installation cylinder 601, a warning light 602, and an electrical connection strip 603. The prompt installation cylinder 601 is threadedly connected to the end face arc block 403 located in the middle of the second forming die 402. The warning light 602 is fixedly installed on the top of the end face arc block 403 located in the middle of the second forming die 402. Two electrical connection strips 603 are fixedly installed on the inner side of the prompt installation cylinder 601. The two electrical connection strips 603, the warning light 602, the first electromagnetic valve 503, and the second electromagnetic valve 504 are connected in series with a power supply. The casting prompt 6 further comprises a lifting float 604, a return spring 6041, and an electrical connection sheet 605. The lifting float 604 is slidingly sleeved on the prompt installation cylinder 601. The lifting float 604 has a hollow structure. The return spring 6041 is sleeved in the prompt installation cylinder 601, and the return spring 6041 is connected between the lifting float 604 and the prompt installation cylinder 601. The electrical connection sheet 605 is fixedly installed on the top of the lifting float 604, and the electrical connection sheet 605 is an elastic steel sheet. The electrical connection sheet 605 is used to adhere to the two electrical connection strips 603. The exhaust shunt 5 can utilize the micro-hole structure of the silicon-carbon alloy exhaust plug 502 to facilitate exhaust, ensure normal casting of the aluminum liquid, and promote exhaust through the external vacuum pump after the second electromagnetic valve 504 is opened, thereby improving the liquid inlet efficiency and making the casting more efficient. Meanwhile, the aluminum liquid is prevented from being cooled too early, which affects the uniformity of the GIS shell casting. The casting prompt 6 can automatically detect the casting liquid level and automatically control the exhaust shunt 5 to switch to normal pressure exhaust, thereby preventing the aluminum liquid from leaking due to active suction exhaust when the casting is almost completed. Meanwhile, the continuous strong negative pressure can easily cause the aluminum liquid to break through the micro-holes of the silicon-carbon alloy exhaust plug 502, and the liquid level can be automatically controlled to reach the standard. The automatic control can be realized to actively exhaust and promote liquid inlet in the early stage of casting. When the liquid level is at the bottom of the end face arc block 403, the lifting float 604 is pushed upward by the buoyancy, the return spring 6041 is compressed, and the electrical connection sheet 605 is moved upward to adhere to the two electrical connection strips 603. At this time, the two electrical connection strips 603 are directly connected, and the warning light 602 can be turned on to prompt attention to stop liquid inlet. Meanwhile, the second electromagnetic valve 504 is closed after being powered on, and the first electromagnetic valve 503 is opened after being powered on, thereby switching to normal exhaust through the exhaust pipe 501 and no longer being negatively sucked.

[0041] The working principle of the embodiment is as follows: first, when the GIS shell needs to be cast, the first forming die 401 and the second forming die 402 are respectively installed on the mold closing drive shaft of the casting machine through bolts, and then the forming bottom die 101 is installed on the casting machine through bolts, and the liquid lifting pipe of the casting machine is connected to the forming bottom die 101; before the mold is closed, the first forming ring 202, the second forming ring 203 and the third forming ring 204 can be inserted into the first forming die 401 and the second forming die 402 correspondingly; at this time, the positioning shaft 301 also directly penetrates through the first forming die 401 and the second forming die 402, and at this time, the fixed wedge block 302 can be inserted into the wedge block groove 3011, and the fixed wedge block 302 can be knocked by using a hammer, so that the inclined side of the fixed wedge block 302 is pressed in the inner side of the wedge block groove 3011, and the inner side of each fixed wedge block 302 is attached to the first forming die 401 and the second forming die 402, so as to realize the positioning of the arc-shaped blocks of the first forming ring 202, the second forming ring 203 and the third forming ring 204, and ensure the stability of subsequent casting; after each fixed wedge block 302 is attached to the first forming die 401 and the second forming die 402, each wedge block switch 404 is also pressed, so as to realize the control of the two indicator lights 405; the staff is prompted that each fixed wedge block 302 is installed in place, and after the staff learns it, the casting sand core 201 can be placed on the forming bottom die 101, and then the first forming die 401 and the second forming die 402 are controlled to be closed by the casting machine, and casting pouring work is performed; when the liquid lifting pipe lifts and pours, the aluminum liquid will gradually rise, the second electromagnetic valve 504 remains open, the vacuum pump connected to the second electromagnetic valve 504 continues to suck, and the pouring is promoted; in cooperation with the exhaust passage 4021, the inside of the cavity can be communicated, and when the liquid level is at the bottom of the end face arc-shaped block 403, the lifting float 604 will be pushed upward by the buoyancy under the action of the buoyancy, the return spring 6041 will be compressed, the power supply piece 605 will be moved upward and attached to the two power supply strips 603, at this time, the two power supply strips 603 are directly connected, and the warning light 602 can be lit to prompt that attention should be paid to stop pouring; at the same time, after the second electromagnetic valve 504 is powered on, it is closed, and after the first electromagnetic valve 503 is powered on, it is opened, so as to switch to normal exhaust through the exhaust pipe 501, and no longer negative pressure suction, even if the aluminum liquid is attached to the silicon-carbon alloy exhaust plug 502, the tension of the aluminum liquid itself cannot directly break through the silicon-carbon alloy exhaust plug 502 under the stop of the microporous structure on the silicon-carbon alloy exhaust plug 502, and the casting can be normally stopped;

[0042] After the casting is completed and the GIS shell is cooled, when demolding is needed, a person can insert a hexagonal wrench into each positioning shaft 301, rotate the positioning shaft 301 to displace outward, and no longer press the inclined surface of the fixed wedge 302, so as to facilitate disassembly of each fixed wedge 302, without knocking the fixed wedge 302 for disassembly, and avoiding vibration caused by knocking the fixed wedge 302 for disassembly in the traditional way, which causes the GIS shell to have hidden cracks; the disassembly is simple and fast.

[0043] In this document, the following points need to be noted:

[0044] 1. The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the usual design.

[0045] 2. In the case of no conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0046] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A three-part GIS shell metal mold casting mold, comprising a casting bottom mold (1), wherein a sand core assembly (2) is provided above the casting bottom mold (1); characterized in that: The sand core assembly (2) is used to form a triple GIS shell flange; a wedge positioning component (3) is installed on the casting bottom mold (1). The sand core assembly (2) is provided with casting mold parts (4) on both sides, and the casting mold parts (4) are used to be installed on the casting machine; an exhaust diversion part (5) is installed on the casting mold parts (4). The casting mold part (4) is equipped with a casting reminder part (6); The casting mold part (4) includes: a first molding mold (401) and a second molding mold (402); The casting bottom mold (1) includes: a forming bottom mold (101) and a hydraulic cylinder (102). The forming bottom mold (101) is provided with a casting liquid inlet in the middle. The hydraulic cylinder (102) is fixedly installed on the forming bottom mold (101). The sand core assembly (2) includes: a casting sand core (201), a first molding ring (202), a second molding ring (203), and a third molding ring (204). The casting sand core (201) is located above the molding bottom mold (101). The casting sand core (201) is provided with three first molding rings (202), and each of the three first molding rings (202) is composed of two arc-shaped blocks spliced ​​together. The casting sand core (201) is provided with six second molding rings (203). Furthermore, each of the six second forming rings (203) is composed of three-lobed arc-shaped blocks, and the seam of the three-lobed arc-shaped blocks of the second forming ring (203) is T-shaped; the casting sand core (201) is provided with three third forming rings (204), and the three third forming rings (204) are composed of four-lobed arc-shaped blocks; the outer wall of the casting sand core (201) is provided with casting flow intervals between the first forming ring (202), the second forming ring (203), and the third forming ring (204); The sand core assembly (2) further includes: a convex pillar forming block (205), two convex pillar forming blocks (205) are provided on the outer side of the casting sand core (201), and the two convex pillar forming blocks (205) are respectively used to insert into the first forming mold (401) and the second forming mold (402); a casting flow interval is provided between the outer side of the casting sand core (201) and the two convex pillar forming blocks (205); the second forming ring (203) and the third forming ring (204) are respectively used to slide into the first forming mold (401); the first forming ring (202) is used to slide into the second forming mold (402); the two sides of the casting sand core (201) are respectively used to be sleeved on the first forming mold (401) and the second forming mold (402); The wedge positioning component (3) includes: a positioning shaft (301), a wedge groove (3011), and a fixing wedge (302). The positioning shaft (301) is threaded onto the first forming ring (202), the second forming ring (203), and the third forming ring (204), and at least one positioning shaft (301) is installed on each arc-shaped block that makes up the first forming ring (202), the second forming ring (203), and the third forming ring (204). The end of the positioning shaft (301) is provided with a hexagonal shape. Hole; a wedge groove (3011) is provided on the positioning shaft (301); two rows of positioning shafts (301) installed on the first forming ring (202) are used to slide into the second forming mold (402); six rows of positioning shafts (301) installed on the second forming ring (203) and the third forming ring (204) are used to slide into the first forming mold (401); a fixed wedge (302) is inserted into the wedge groove (3011), and the fixed wedge (302) has an inclined structure; The casting mold component (4) further includes: an exhaust channel (4021), an end face arc block (403), a wedge switch (404), and an indicator light (405). Three end face arc blocks (403) are fixedly installed on the first molding mold (401) and the second molding mold (402), respectively. Two exhaust channels (4021) are opened on the second molding mold (402). The exhaust channels (4021) are used for exhaust. Six rows of wedge switches (404) are fixedly embedded on the first molding mold (401). Two rows of wedge switches (404) are fixedly embedded on the second molding mold (402). The wedge switches (404) are used to detect that the fixed wedge (302) is installed in place. Indicator lights (405) are fixedly installed on the first molding mold (401) and the second molding mold (402), respectively. The two indicator lights (405) are electrically connected to the wedge switches (404) embedded on the first molding mold (401) and the second molding mold (402), respectively.

2. The triple-unit GIS shell metal mold casting mold according to claim 1, characterized in that, The casting bottom mold (1) further includes: a bottom mold stop plate (103), which is inserted into the forming bottom mold (101); the bottom mold stop plate (103) is fixedly installed on the output shaft of the hydraulic cylinder (102).

3. The triple-unit GIS shell metal mold casting mold according to claim 1, characterized in that, The bottom of the first molding die (401) and the second molding die (402) are flush with the top of the molding base die (101).

4. A triple-unit GIS shell metal mold casting mold according to claim 3, characterized in that, The exhaust diversion component (5) includes: an exhaust pipe (501), a silicon carbide exhaust plug (502), a first solenoid valve (503), and a second solenoid valve (504). The exhaust pipe (501) is fixedly installed on the arc-shaped block (403) at the middle of the second molding die (402). The arc-shaped block (403) at the middle of the second molding die (402) is threaded with a silicon carbide exhaust plug (502), and the silicon carbide exhaust plug (502) is provided with exhaust micro-holes. The first solenoid valve (503) is fixedly installed on the exhaust pipe (501). The second solenoid valve (504) is fixedly installed on the side of the exhaust pipe (501), and the second solenoid valve (504) is externally connected to a vacuum pump.

5. A triple-unit GIS shell metal mold casting mold according to claim 4, characterized in that, The casting indicator (6) includes: an indicator mounting cylinder (601), a warning light (602), and a power strip (603). The indicator mounting cylinder (601) is threadedly connected to the arc-shaped block (403) on the end face located in the middle of the second molding die (402). The warning light (602) is fixedly installed on the top of the arc-shaped block (403) on the end face located in the middle of the second molding die (402). Two power strips (603) are fixedly installed on the inner side of the indicator mounting cylinder (601). The two power strips (603), the warning light (602), the first solenoid valve (503), and the second solenoid valve (504) are connected in series with a power supply.

6. A triple-unit GIS shell metal mold casting mold according to claim 5, characterized in that, The casting prompt component (6) further includes: a lifting float (604), a return spring (6041), and a contact plate (605). The lifting float (604) is slidably sleeved on the prompt mounting cylinder (601). The lifting float (604) has a hollow internal structure. The return spring (6041) is sleeved inside the prompt mounting cylinder (601), and the return spring (6041) is connected between the lifting float (604) and the prompt mounting cylinder (601). A contact plate (605) is fixedly installed on the top of the lifting float (604). The contact plate (605) is located below the two contact strips (603).

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