Metal mold casting mold for triple GIS (Gas Insulated Switchgear) shell

Abstract

The invention provides a triple GIS shell metal mold casting mold, and relates to the technical field of casting molds, the triple GIS shell metal mold casting mold comprises a casting bottom mold part, and a sand core assembly is arranged above the casting bottom mold part; the sand core assembly is used for forming a triple GIS shell flange; a wedge block positioning piece is mounted on the casting bottom mold piece; casting mold body parts are arranged on the two sides of the sand core assembly and used for being installed on a casting machine. The exhaust flow dividing piece is adopted and matched with opening of the second electromagnetic valve, suction through an external vacuum pump can be facilitated, exhaust is promoted, and the liquid inlet efficiency is improved; the problem that an existing triple GIS shell casting mold is not convenient to automatically control to actively exhaust and prevent hollowing in the early stage of casting is solved.

Description

Technical Field

[0001] This invention relates to the field of casting mold technology, and in particular to a three-part GIS shell metal mold casting mold. Background Technology

[0002] Gas-insulated metal-enclosed switchgear (GIS) housings require high precision and airtightness, primarily made of aluminum and filled with sulfur hexafluoride gas to provide a sealed environment, insulation support, and mechanical protection, ensuring the safe operation of high-voltage electrical components such as circuit breakers and disconnectors. GIS housings typically require sand core casting molds for molding. Current GIS housing casting molds struggle to form the flanges when casting triple-unit GIS housings. If a modular molding method is used, it's difficult to automatically guide the installation of multiple modular parts, leading to omissions that directly affect casting quality and result in defective products. Furthermore, forgetting to remove modular parts during demolding can directly damage the equipment. Traditional casting molds often require microporous silicon-carbon alloy vent plugs for venting, which, while preventing leakage, results in poor venting flow and difficulty in automatically controlling active venting during the early stages of casting, easily causing voids and affecting casting quality. Summary of the Invention

[0003] This disclosure relates to a three-section GIS shell metal mold for casting, which solves the problem that current three-section GIS shell casting molds are not convenient for automatic control to actively vent and prevent air bubbling in the early stage of casting.

[0004] In a first aspect, this disclosure provides a metal mold for casting a triple-unit GIS shell, specifically including a casting bottom mold, with a sand core assembly on top of the bottom mold; the sand core assembly is used to form a flange of the triple-unit GIS shell; a wedge positioning element is installed on the bottom mold; casting mold body parts are provided on both sides of the sand core assembly, and the casting mold body parts are used to be installed on a casting machine; an exhaust diversion element is installed on the casting mold body parts; a casting indicator element is installed on the casting mold body parts; the casting mold body parts include: a first forming mold and a second forming mold; the casting bottom mold includes: a forming bottom mold and a hydraulic cylinder, with a casting inlet in the middle of the forming bottom mold; the forming bottom mold is used to be fixedly installed on the casting machine by bolts, and the forming bottom mold is connected to a low-pressure forming inlet pipe; the hydraulic cylinder is fixedly installed on the forming bottom mold.

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

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

[0007] In at least some embodiments, the sand core assembly further includes: protruding pillar forming blocks, two protruding pillar forming blocks are provided on the outer side of the casting sand core, and the two protruding pillar forming blocks are respectively used to insert into the first forming mold and the second forming mold; a casting flow interval is provided between the outer side of the casting sand core and the two protruding pillar forming blocks; the second forming ring and the third forming ring are respectively used to slide into the first forming mold; the first forming ring is used to slide into the second forming mold; and the two sides of the casting sand core are respectively used to be sleeved on the first forming mold and the second forming mold.

[0008] In at least some embodiments, the wedge positioning component includes: a positioning shaft, a wedge groove, and a fixed wedge. The first forming ring, the second forming ring, and the third forming ring are respectively threaded with positioning shafts, and at least one positioning shaft is installed on each arc-shaped block that makes up the first forming ring, the second forming ring, and the third forming ring. The end of the positioning shaft is provided with a hexagonal hole. The positioning shaft is provided with a wedge groove. Two rows of positioning shafts installed on the first forming ring are used to slide into the second forming mold. Six rows of positioning shafts installed on the second forming ring and the third forming ring are used to slide into the first forming mold. A fixed wedge is inserted into the wedge groove, and the fixed wedge has an inclined structure.

[0009] In at least some embodiments, the first forming mold and the second forming mold are respectively provided with through holes, and the first forming mold and the second forming mold are respectively used to be installed on a casting machine; the bottom of the first forming mold and the second forming mold are respectively flush with the top of the forming bottom mold.

[0010] In at least some embodiments, the casting mold body further includes: venting channels, end-face arc blocks, wedge switches, and indicator lights. Three end-face arc blocks are fixedly installed on the first molding mold and the second molding mold, respectively. Two venting channels are provided on the second molding mold. The venting channels are used for venting. Six rows of wedge switches are fixedly embedded on the first molding mold. Two rows of wedge switches are fixedly embedded on the second molding mold. The wedge switches are used to detect that the fixed wedges are installed in place. Indicator lights are fixedly installed on the first molding mold and the second molding mold, respectively. The two indicator lights are electrically connected to the wedge switches embedded on the first molding mold and the second molding mold, respectively.

[0011] In at least some embodiments, the exhaust diversion component includes: an exhaust pipe, a silicon carbide exhaust plug, a first solenoid valve, and a second solenoid valve. The exhaust pipe is fixedly installed on an arc-shaped block on the end face located in the middle of the second molding die. A silicon carbide exhaust plug is threadedly connected to the arc-shaped block on the end face located in the middle of the second molding die, and the silicon carbide exhaust plug is provided with exhaust micropores. A first solenoid valve is fixedly installed on the exhaust pipe. A second solenoid valve is fixedly installed on the side of the exhaust pipe, and the second solenoid valve is externally connected to a vacuum pump.

[0012] In at least some embodiments, the casting indicator includes: an indicator mounting cylinder, a warning light, and a power strip. The indicator mounting cylinder is threadedly connected to an arc-shaped block on the end face located in the middle of the second molding die. A warning light is fixedly mounted on the top of the arc-shaped block on the end face located in the middle of the second molding die. Two power strips are fixedly mounted on the inner side of the indicator mounting cylinder. The two power strips, the warning light, the first solenoid valve, and the second solenoid valve are connected in series with a power supply.

[0013] In at least some embodiments, the cast indicator further includes: a lifting float, a return spring, and a contact plate; the lifting float is slidably sleeved on the indicator mounting cylinder; the interior of the lifting float is hollow; a return spring is sleeved inside the indicator mounting cylinder, and the return spring is connected between the lifting float and the indicator mounting cylinder; a contact plate is fixedly installed on the top of the lifting float, and the contact plate is an elastic steel sheet; the contact plate is used to attach two contact strips.

[0014] This invention provides a three-piece GIS shell metal mold casting mold, which has the following beneficial effects: The sand core assembly used in this invention can utilize the multi-lobed structure of the first forming ring, the second forming ring, and the third forming ring to facilitate the forming of GIS shell flanges; the bottom mold stop plate can facilitate the sealing of the liquid inlet on the forming bottom mold after low-pressure forming and casting, which facilitates the return of aluminum liquid for heat preservation, eliminates the need for continuous pressure supply, and reduces the amount of residual sprue.

[0015] Furthermore, the use of wedge positioning components facilitates the positioning of the first, second, and third forming rings, ensuring their stability after mold closing. Combined with wedge switches, automatic detection and prompts are provided when each fixed wedge is in place, effectively preventing accidental forgetting of wedge installation. The intuitive prompts are particularly beneficial for structures with numerous fixed wedges, preventing omissions that could affect the casting quality of the GIS shell.

[0016] In addition, the use of an exhaust diverter, in conjunction with the opening of the second solenoid valve, facilitates the suction of the external vacuum pump, promotes exhaust, improves liquid injection efficiency, and makes casting more efficient. It also prevents the molten aluminum from cooling too early, which would affect the uniformity of the GIS shell casting. The use of a casting indicator can automatically detect that the casting liquid level is up to standard and automatically control the exhaust diverter to switch to atmospheric pressure exhaust, avoiding the leakage of molten aluminum caused by actively suctioning exhaust when the casting is close to completion. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0018] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0019] In the attached diagram: Figure 1 A schematic diagram of the integral structure of a three-section GIS shell metal mold casting mold according to this application is shown; Figure 2 An internal sectional view of a triple-layer GIS shell metal mold casting mold of this application is shown; Figure 3 A schematic diagram of the overall structure of the casting bottom mold of this application is shown; Figure 4 This application shows Figure 1 Enlarged view of the structure of the G region; Figure 5 A schematic diagram of the overall structure of the sand core assembly of this application is shown; Figure 6 This application shows Figure 1 Enlarged view of the structure of region B in the middle; Figure 7 A schematic diagram of the overall structure of the casting mold part of this application is shown; Figure 8 This application shows Figure 7 Enlarged view of the structure of region C in the middle; Figure 9 This application shows Figure 2 Enlarged view of the structure of region D in the middle; Figure 10 A schematic diagram showing the installation position of the silicon-carbon alloy exhaust plug of this application is provided; Figure 11 This application shows Figure 10 Enlarged view of the structure of the middle F region; Figure 12 A schematic diagram of the three-section GIS shell after casting is shown.

[0020] List of reference numerals in the attached diagram: 1. Casting bottom mold; 101. Forming bottom mold; 102. Hydraulic cylinder; 103. Bottom mold stop plate; 2. Sand core assembly; 201. Casting sand core; 202. First forming ring; 203. Second forming ring; 204. Third forming ring; 205. Protruding column forming block; 3. Wedge positioning component; 301. Positioning shaft; 3011. Wedge groove; 302. Fixed wedge; 4. Casting mold body component; 401. First forming mold; 402. Second forming mold; 4021. Molding mold; 403. Exhaust duct; 404. End face arc block; 405. Wedge switch; 406. Indicator light; 5. Exhaust diverter; 501. Exhaust pipe; 502. Silicon carbide exhaust plug; 503. First solenoid valve; 504. Second solenoid valve; 6. Casting indicator; 601. Indicator mounting cylinder; 602. Warning light; 603. Electrical connection strip; 604. Lifting float; 6041. Return spring; 605. Electrical connection piece. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figures 1 to 12 : This invention proposes a three-section GIS shell metal mold casting mold, including a casting bottom mold 1, with a sand core assembly 2 above the casting bottom mold 1; the sand core assembly 2 is used to form the three-section GIS shell flange; a wedge positioning component 3 is installed on the casting bottom mold 1; casting mold body components 4 are provided on both sides of the sand core assembly 2, and the casting mold body components 4 are used to be installed on a casting machine; an exhaust diversion component 5 is installed on the casting mold body component 4; a casting indicator component 6 is installed on the casting mold body component 4; the casting mold body component 4 includes: a first forming mold 401 and a second forming mold 402; the casting bottom mold 1 includes: a forming bottom mold 101 and a hydraulic cylinder 102, with a casting liquid inlet in the middle of the forming bottom mold 101; the forming bottom mold 101 is used to be fixedly installed on the casting machine by bolts, and the forming bottom mold 101 is connected to a low-pressure forming liquid inlet pipe; the hydraulic cylinder 102 is fixedly installed on the forming bottom mold 101.

[0023] In this embodiment, the casting bottom mold component 1 further includes: a bottom mold stop plate 103, which is inserted into the forming bottom mold 101; the end of the bottom mold stop plate 103 has a beveled structure; the bottom mold stop plate 103 has an L-shaped structure; the bottom mold stop plate 103 stops the liquid inlet on the forming bottom mold 101; the bottom mold stop plate 103 is fixedly installed on the output shaft of the hydraulic cylinder 102; the sand core assembly 2 includes: a casting sand core 201, a first forming ring 202, a second forming ring 203, and a third forming ring 204, with the casting sand core 201 located above the forming bottom mold 101; The casting sand core 201 has three first forming rings 202, each composed of two arc-shaped blocks joined together; the casting sand core 201 has six second forming rings 203, each composed of three arc-shaped blocks joined together, with the joints between the three arc-shaped blocks of the second forming rings 203 forming a T-shape; the casting sand core 201 has three third forming rings 204, each composed of four arc-shaped blocks joined together; the outer wall of the casting sand core 201 is flush with the first forming rings 202, second forming rings 203, and third forming rings 204. Each part is provided with a casting flow interval; the sand core assembly 2 also includes: a protruding forming block 205, two protruding forming blocks 205 are provided on the outer side of the casting sand core 201, and the two protruding 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 protruding 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 casting sand core 201 is divided into two sides. The sand core assembly 2 is used to fit onto the first forming mold 401 and the second forming mold 402. The multi-lobed structure of the first forming ring 202, the second forming ring 203, and the third forming ring 204 facilitates the forming of the GIS shell flange and makes it easy to disassemble later, improving the integrity of the GIS shell forming and effectively improving the processing and manufacturing efficiency of the GIS shell. The bottom mold stop plate 103 can facilitate the sealing of the liquid inlet on the bottom mold 101 after the low-pressure forming and casting is completed, which facilitates the return of aluminum liquid for heat preservation without the need for continuous supply and pressure maintenance, and the structure is simple to control.

[0024] In this embodiment, the wedge positioning component 3 includes: a positioning shaft 301, a wedge groove 3011, and a fixed wedge 302. Positioning shafts 301 are 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 constituting the first forming ring 202, the second forming ring 203, and the third forming ring 204. The positioning shaft 301 has a hexagonal hole at its end; a wedge groove 3011 is formed on the positioning shaft 301; two rows of positioning shafts 301 installed on the first forming ring 202 are used for sliding insertion into the second forming mold 402; the second forming ring 203 and the third forming ring 204... The six rows of positioning shafts 301 mounted on the ring 204 are used for sliding insertion 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 first forming mold 401 and the second forming mold 402 are respectively provided with through holes, and the first forming mold 401 and the second forming mold 402 are respectively used for installation on the casting machine; the bottom of the first forming mold 401 and the second forming mold 402 are respectively flush with the top of the forming bottom mold 101; the casting mold body 4 also includes: an exhaust channel 4021, an end face arc block 403, a wedge switch 404 and an indicator light 405, the first forming mold 401 and the second forming mold 402 Three end-face arc-shaped blocks 403 are fixedly installed on the first molding die 401; two exhaust channels 4021 are opened on the second molding die 402; the exhaust channels 4021 are used for exhaust; six rows of wedge block switches 404 are fixedly embedded on the first molding die 401; two rows of wedge block switches 404 are fixedly embedded on the second molding die 402; the wedge block switches 404 are used to detect that the fixed wedge block 302 is installed in place; indicator lights 405 are fixedly installed on the first molding die 401 and the second molding die 402 respectively; the two indicator lights 405 are electrically connected to the wedge block switches 404 embedded on the first molding die 401 and the second molding die 402 respectively; the use of wedge block positioning parts 3 can facilitate the positioning of the first molding die 302. The first forming ring 202, the second forming ring 203, and the third forming ring 204 ensure the stability of the first forming ring 202, the second forming ring 203, and the third forming ring 204 after mold closing. At the same time, the fixed wedge block 302 positioning method of this structure is faster and simpler to operate. With the wedge block switch 404, it can automatically detect that each fixed wedge block 302 is installed in place and automatically prompt, which can avoid manual forgetting to install the fixed wedge block 302 and provide intuitive prompts. Especially for this structure with a large number of fixed wedge blocks 302, it can effectively avoid the omission of fixed wedge blocks 302, which would affect the casting quality of the GIS shell and even cause safety hazards.Each positioning shaft 301 can pass through the first forming mold 401 and the second forming mold 402. At this point, the fixing wedge 302 can be inserted into the wedge groove 3011. The inclined side of the fixing wedge 302 presses against the inside of the wedge groove 3011, and the inner sides of each fixing wedge 302 adhere to the first forming mold 401 and the second forming mold 402, thus positioning the arc-shaped blocks that form the first forming ring 202, the second forming ring 203, and the third forming ring 204, ensuring subsequent casting stability. After each fixing wedge 302 adheres to the first forming mold 401 and the second forming mold 402, each wedge switch 404 is also compressed, controlling the two indicator lights 405 to illuminate.

[0025] In Example 2, based on Example 1, 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 mold 402. The silicon carbide exhaust plug 502 is threadedly connected to the arc-shaped block 403 at the middle of the second molding mold 402, and the silicon carbide exhaust plug 502 is provided with exhaust micropores. 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. The casting indicator 6 includes: an indicator mounting cylinder 601, a warning light 602, and a contact strip 603. The indicator mounting cylinder 601 is threadedly connected to the arc-shaped block 403 located in the middle of the second forming mold 402; a warning light 602 is fixedly installed on the top of the arc-shaped block 403 located in the middle of the second forming mold 402; two electrical contact strips 603 are fixedly installed inside the indicator mounting cylinder 601; the two electrical contact 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; the cast indicator 6 also includes: a lifting float 604, a return spring 6041 and an electrical contact piece 605, the lifting float 604 is slidably sleeved on the indicator mounting cylinder 601; the lifting float 604 has a hollow internal structure; the return spring 6041 is sleeved inside the indicator mounting cylinder 601 and is connected to the lifting float 604. Between 04 and the indicator installation cylinder 601; a contact plate 605 is fixedly installed on the top of the lifting float 604, and the contact plate 605 is an elastic steel sheet; the contact plate 605 is used to fit the two contact strips 603. The exhaust diversion component 5 can utilize the microporous structure of the silicon-carbon alloy exhaust plug 502 to facilitate exhaust and ensure normal casting of aluminum liquid. At the same time, after the second solenoid valve 504 is opened, it can be easily sucked by an external vacuum pump to promote exhaust, improve liquid inlet efficiency, and make casting more efficient. It also avoids premature cooling of aluminum liquid, which affects the uniformity of GIS shell casting. The casting indicator component 6 can automatically detect that the casting liquid level is up to standard and automatically control the exhaust diversion component 5 to switch to normal pressure exhaust, avoiding the need for active exhaust when the casting is close to completion. The leakage of molten aluminum caused by suction and exhaust, along with the strong negative pressure of continuous suction, can easily cause the molten aluminum to break through the micropores on the silicon-carbon alloy exhaust plug 502. Automatic control can be implemented to indicate when the liquid level is within acceptable limits. Automatic control can be achieved to actively exhaust and promote liquid inflow during the early stages of casting. When the liquid level is at the bottom of the arc-shaped block 403 on the end face, buoyancy will push the lifting float 604 upwards, compressing the return spring 6041 and causing the contact plate 605 to move upwards and adhere to the two contact strips 603. At this time, the two contact strips 603 are directly connected, and the warning light 602 will illuminate to indicate that the liquid inflow needs to be stopped. Simultaneously, the second solenoid valve 504 closes after being energized, and the first solenoid valve 503 opens after being energized, switching to normal exhaust through the exhaust pipe 501, eliminating negative pressure suction.

[0026] The working principle of this embodiment is as follows: First, when GIS shell casting is required, the first molding mold 401 and the second molding mold 402 are respectively bolted onto the mold closing drive shaft of the casting machine. Then, the molding bottom mold 101 is bolted onto the casting machine, and the casting machine's riser pipe is connected to the molding bottom mold 101. Before mold closing, the first molding ring 202, the second molding ring 203, and the third molding ring 204 can be inserted into the first molding mold 401 and the second molding mold 402 respectively. At this time, the positioning shaft 301 will also pass directly through the first molding mold 401 and the second molding mold 402. Then, the fixing wedge 302 can be inserted into the wedge groove 3011, which allows the positioning shaft 301 to pass directly through the first molding mold 401 and the second molding mold 402. The fixed wedge 302 is struck with a hammer, causing its inclined side to press against the inside of the wedge groove 3011. The inner sides of each fixed wedge 302 adhere to the first forming mold 401 and the second forming mold 402, thus positioning the arc-shaped blocks that form the first forming ring 202, the second forming ring 203, and the third forming ring 204, ensuring subsequent casting stability. After each fixed wedge 302 is attached to the first forming mold 401 and the second forming mold 402, each wedge switch 404 is also compressed, controlling the two indicator lights 405 to illuminate. This indicates to the workers that each fixed wedge 302 is in place, and once this is confirmed, the casting sand core 201 can be placed in the forming bottom mold 10. 1. Subsequently, the casting machine controls the first forming mold 401 and the second forming mold 402 to close and perform casting. During the casting process, the aluminum liquid gradually rises through the riser pipe. The second solenoid valve 504 remains open, and the vacuum pump connected to the second solenoid valve 504 continuously draws in liquid to promote casting. The exhaust duct 4021 connects to the inside of the mold cavity. When the liquid level is at the bottom of the arc-shaped block 403 on the end face, the buoyancy will push the lifting float 604 upward, compressing the return spring 6041. This causes the contact plate 605 to move upward and adhere to the two contact strips 603. At this time, the two contact strips 603 are directly connected, and the warning light 602 will illuminate to indicate that the machine is approaching a stop. The liquid inlet is stopped; simultaneously, the second solenoid valve 504 is closed after being energized, and the first solenoid valve 503 is opened after being energized, switching to normal exhaust through the exhaust pipe 501, and no longer negative pressure suction. Even if the aluminum liquid adheres to the silicon carbide exhaust plug 502, the tension of the aluminum liquid itself cannot directly break through the silicon carbide exhaust plug 502 due to the microporous structure on the silicon carbide exhaust plug 502, and the casting liquid inlet can be stopped normally; after the aluminum liquid is injected into the cavity of the first forming mold 401 and the second forming mold 402 through the riser pipe, the hydraulic cylinder 102 can be quickly controlled to drive the bottom mold stop plate 103 to move and block the liquid inlet of the forming bottom mold 101. At this time, the aluminum liquid in the riser pipe can be controlled to flow back and keep warm. After casting is completed and the GIS shell has cooled, when demolding is required, a hex wrench can be inserted into each positioning shaft 301 to rotate the positioning shaft 301 outward, so that it no longer presses against the inclined surface of the fixing wedge 302, making it easy to disassemble each fixing wedge 302 without the need for manual knocking of the fixing wedge 302. This also avoids the vibration that can cause microcracks in the GIS shell when disassembling the fixing wedge 302 by knocking it. Disassembly is simple and quick.

[0027] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0028] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0029] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the 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).

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 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). The six second forming rings (203) are each composed of three-lobed arc blocks, and the joint of the three-lobed arc 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 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).

4. A triple-unit GIS shell metal mold casting mold according to claim 3, characterized in that, 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).

5. A triple-unit GIS shell metal mold casting mold according to claim 3, characterized in that, 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) is a sloping structure.

6. A triple-unit GIS shell metal mold casting mold according to claim 5, 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).

7. A triple-unit GIS shell metal mold casting mold according to claim 6, characterized in that, 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.

8. A triple-unit GIS shell metal mold casting mold according to claim 7, 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.

9. A triple-unit GIS shell metal mold casting mold according to claim 8, 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.

10. A triple-unit GIS shell metal mold casting mold according to claim 9, 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).

Images