Copper alloy glass mold casting coated sand annular pouring line

Abstract

The application discloses a copper alloy glass mold casting coated sand annular pouring line, which comprises an annular guide rail, a plurality of conveying trolleys are uniformly arranged on the upper part of the annular guide rail, two adjacent conveying trolleys are sequentially connected through universal joints in a head-to-tail rotation mode, and two groups of driving mechanisms for driving the plurality of conveying trolleys to move are arranged on the lower part of the annular guide rail; sand boxes are arranged on the conveying trolleys respectively, and the sand boxes are all of an upper and lower opening structure; a filling material collecting warehouse, a sand box pouring position and a vibrating conveying and screening machine are sequentially arranged outside the annular guide rail, the lower end of the filling material collecting warehouse is funnel-shaped and is provided with a screw feeder which is in communication with the inside of the filling material collecting warehouse, and a pushing box taking mechanism is arranged between the vibrating conveying and screening machine and the annular guide rail. The application can automatically complete sand box filling, box pushing, box taking, conveying and sand dropping processes, reduces the labor intensity of workers, shortens the working time, and can greatly improve the casting production efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of coated sand molding and casting production lines, and in particular to a circular casting line for coated sand of copper alloy glass mold castings. Background Technology

[0002] In the casting process of copper alloy glass molds, several molding and casting processes are commonly used, including clay sand molding, resin sand molding, and coated sand molding. Clay sand molding requires the addition of a large proportion of pulverized coal, primarily to improve the appearance and permeability of the casting. However, the pulverized coal cannot be reused, resulting in resource waste. Clay sand molds have low hardness and high yield, leading to severe casting defects such as mold expansion, sand loss, porosity, and shrinkage in the cast castings. This not only results in poor product appearance but also numerous internal casting defects, significantly impacting product lifespan and leading to a high scrap rate. Resin sand castings offer good quality and a low scrap rate, but improper control in raw material selection, process design, molding (core) operation, and production management can cause defects such as porosity, pinholes, and cracks, even resulting in batch scrap. Furthermore, the poor thermal conductivity of resin sand molds and the slow solidification rate of the molten metal can lead to lower casting hardness.

[0003] Coated sand casting uses molding sand and core sand with a solid resin film coated on the surface of the hard mold during molding and core making. Compared with resin sand casting, coated sand casting significantly reduces the amount of solid resin and hardener added, reducing harmful gas emissions and production costs. Furthermore, all waste sand can be recycled, keeping the work area clean and dust-free. The aggregate in coated sand molding is calcined at high temperatures, reducing the expansion of the sand mold after combustion. The cured sand mold has high strength and low gas emission, among other advantages. The resulting products are far superior to those produced by clay sand molding in terms of appearance quality, internal casting defects, and dimensional accuracy. Additionally, the rapid cooling rate during casting in coated sand molding greatly improves the graphite morphology of the casting, thereby enhancing the mechanical properties and extending the product's service life.

[0004] Therefore, this invention develops a coated sand-embedded box annular casting line for producing copper alloy glass mold castings based on the process requirements of copper alloy glass mold castings, thus solving the technical problems of poor yield and quality of copper alloy glass mold castings and casting defects in the prior art. Summary of the Invention

[0005] The purpose of this invention is to provide a copper alloy glass mold casting coated sand annular pouring line to solve the technical problems existing in the prior art mentioned in the background section.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This invention discloses a copper alloy glass mold casting coated sand annular casting line, comprising an annular guide rail. Multiple conveying trolleys are evenly arranged on the upper part of the annular guide rail, with adjacent trolleys connected end-to-end via universal joints. Two sets of drive mechanisms for driving the multiple conveying trolleys are arranged on the lower part of the annular guide rail. Each trolley holds a sand box, each sand box having an open top and bottom structure. A filler collection silo, a sand box casting position, and a vibrating conveyor screen are sequentially arranged outside the annular guide rail. The lower end of the filler collection silo is funnel-shaped and equipped with a screw feeder connected to its interior. A push-type box-removing mechanism is provided between the vibrating conveyor screen and the annular guide rail.

[0008] Furthermore, the annular guide rail includes two elongated oval tracks arranged inside and outside, and the spacing between each part of the two elongated oval tracks is the same. The bottom of the conveying trolley is provided with two sets of first pulleys that are respectively adapted to the two elongated oval tracks.

[0009] Furthermore, multiple pairs of support legs are evenly arranged on the ground below the annular guide rail, and a pair of fixing plates are respectively arranged between each pair of support legs. A crossbeam is fixedly arranged on the upper part of the two support legs of each pair. The bottom of the annular guide rail is fixedly connected to the upper part of each crossbeam, and the two sides of the annular guide rail are fixedly connected to each fixing plate.

[0010] Furthermore, the driving mechanism includes a first telescopic rod fixedly mounted on the ground. The telescopic end of the first telescopic rod is fixedly connected to one end of a driving platform slidably mounted at the bottom of the straight section of the annular guide rail. The upper part of the driving platform is rotatably equipped with two sets of second pulleys respectively adapted to the two elongated oval guide rails. The other end of the driving platform is hinged with a push box handle. The end of the push box handle is configured as a hook-like structure, and a spring is provided between the push box handle and the driving platform. Each of the conveying trolleys has a wedge fixedly mounted at its bottom, and the bottom of each wedge is inclined upward along the direction of travel of the trolley.

[0011] Furthermore, a sand box retrieval mechanism is provided on the outside of the filler collection silo. The sand box retrieval mechanism includes a first frame, a vertical second telescopic rod fixedly installed in the middle of the first frame, the telescopic end of the second telescopic rod being fixedly connected to a first lifting frame slidably installed on the first frame, two horizontal third telescopic rods symmetrically arranged on the upper part of the first lifting frame, the free ends of the two third telescopic rods being fixedly connected to two first gripping frames symmetrically slidably installed on the first lifting frame, and a first gripping hook being provided on the side of each first gripping frame; and a matching inclined plate is provided on both sides of each sand box.

[0012] Furthermore, the push-type box-retrieving mechanism includes a second frame fixedly mounted outside the vibrating conveyor screen and the annular guide rail. A pushing platform is mounted on the second frame, and motors are mounted at both ends of the pushing platform. The drive shafts of each motor are connected to the input end of a dual-output shaft reducer. Transmission gears are mounted on the two output shafts of the dual-output shaft reducer, and each transmission gear meshes with a transmission rack symmetrically mounted on the second frame. Two sets of gears are rotatably mounted at the upper ends of the pushing platform, respectively engaging with the second... The frame has rollers that contact the upper surface and sides; a vertical fourth telescopic rod is fixedly installed on the upper part of the pushing platform, the telescopic end of the fourth telescopic rod is fixedly connected to the second lifting frame, two fifth telescopic rods are symmetrically arranged on the second lifting frame, the telescopic end of each fifth telescopic rod is fixedly connected to the second gripping frame, and a second gripping hook is provided on the side of each second gripping frame; a push frame is fixedly installed at the bottom of the pushing platform, two sixth telescopic rods are symmetrically arranged at the bottom of the push frame, and a push block is fixedly installed at the end of each sixth telescopic rod.

[0013] Furthermore, the vibrating conveyor screen and the push-type box-retrieving mechanism are both covered by a first gas collection hood, and the top of the first gas collection hood is connected to the first bag filter dust collector through a first waste gas conveying pipe; the upper discharge port of the vibrating conveyor screen is connected to the external casting block sand collection hopper, and the lower discharge port of the vibrating conveyor screen is connected to the external sand powder collection hopper.

[0014] Furthermore, the sand powder collection hopper is connected to the filler collection silo via a steel sand elevator.

[0015] Furthermore, a side-suction dust collection hood is provided on the upper side of the sand box pouring position. The side-suction dust collection hood is connected to the second bag filter and the dual-stage activated carbon adsorption box through the second exhaust gas conveying pipe.

[0016] Furthermore, a second gas collection hood is fixedly installed above the annular guide rail near the sand box pouring position. The upper part of the second gas collection hood is connected to the second bag filter and the dual-stage activated carbon adsorption box through a third waste gas conveying pipe.

[0017] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0018] 1) The copper alloy glass mold casting coated sand ring pouring line of the present invention can automatically complete the sand box filling, pushing, taking out and conveying, and sand dropping processes, reducing the labor intensity of workers, shortening the working time, and greatly improving the casting production efficiency.

[0019] 2) The coated sand annular gating line for copper alloy glass mold castings uses coated sand core making, resulting in a smooth and flat casting surface. This significantly improves the yield and quality of copper alloy glass mold castings and reduces casting defects. Simultaneously, coated sand castings can significantly alter the appearance quality of the blank, reduce cutting allowances, increase process yield, and stabilize mold quality. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a top view of the present invention;

[0023] Figure 3 This is a schematic diagram of the drive mechanism structure;

[0024] Figure 4 This is a schematic diagram of the sand box loading and unloading mechanism;

[0025] Figure 5 This is a schematic diagram of the push-type box-retrieving mechanism;

[0026] Figure 6 This is a schematic diagram of the end of the push-type box-retrieving mechanism;

[0027] Explanation of reference numerals in the attached diagram: 1. Circular guide rail; 2. Conveyor trolley; 3. First pulley; 4. Support leg; 5.

[0028] 6. Fixed plate; 7. Crossbeam; 8. Drive mechanism; 9. First telescopic rod; 10. Drive platform; 11. Second pulley; 12. Push box handle; 13. Spring; 14. Limiting rail; 15. Third pulley; 16. Wedge; 17. Sand box; 18. Filler collection silo; 19. Sand box pouring position; 10. Vibrating conveyor screen; 11. Screw feeder; 12. Push-type box lifting mechanism; 13. Second frame; 14. Pushing platform; 14. Motor; 15. Output shaft reducer; 16. Transmission gear; 17. Transmission rack; 18. Roller;

[0029] 14-9, Fourth telescopic rod; 14-10, Second lifting frame; 14-11, Fifth telescopic rod; 14-12, Second gripping frame; 14-13, Second gripping hook; 14-14, Push frame; 14-15, Sixth telescopic rod; 14-16, Push block; 15, Sand box loading / unloading mechanism; 15-1, First frame; 15-2, Second telescopic rod; 15-3, First lifting frame; 15-4, Third telescopic rod; 15-5, First gripper 15-6. First grabbing hook; 16. Matching inclined plate; 17. First gas collection hood; 18. First waste gas conveying pipeline; 19. First bag filter; 20. Casting block sand collection hopper; 21. Sand powder collection hopper; 22. Steel sand elevator; 23. Side suction dust collection hood; 24. Second waste gas conveying pipeline; 25. Second bag filter; 26. Two-stage activated carbon adsorption box; 27. Second gas collection hood; 28. Third waste gas conveying pipe. Detailed Implementation

[0030] like Figures 1-6 As shown, a copper alloy glass mold casting coated sand annular pouring line includes an annular guide rail 1. Multiple conveying trolleys 2 are evenly arranged on the upper part of the annular guide rail, and adjacent conveying trolleys 2 are sequentially connected end-to-end via universal joints. Specifically, the annular guide rail 1 includes two elongated oval tracks arranged internally and externally, with equal spacing between all parts of the two elongated oval tracks. Two sets of first pulleys 3, each adapted to one of the two elongated oval tracks, are installed at the bottom of the conveying trolleys 1.

[0031] In this embodiment, multiple pairs of vertical support legs 4 are evenly fixedly arranged on the ground below the annular guide rail 1, and a pair of fixing plates 5 are fixedly arranged between each pair of support legs 4. A horizontal crossbeam 6 is fixedly arranged on the upper part of the two support legs 4 in each pair. The bottom of the annular guide rail 1 is fixedly connected to the upper part of each crossbeam 6, and the two sides of the annular guide rail 1 are fixedly connected to each fixing plate 5.

[0032] The lower part of the annular guide rail 1 is provided with two sets of drive mechanisms 7 for driving the movement of multiple conveying trolleys 2. Specifically, each drive mechanism includes a first telescopic rod 7-1 fixedly installed on the ground. The telescopic end of the first telescopic rod 7-1 is fixedly connected to one end of a drive platform 7-2 slidably installed at the bottom of the straight section of the annular guide rail 1. Two sets of second pulleys 7-3, each adapted to one of the two elongated oval guide rails, are rotatably installed on the upper part of the drive platform 7-2. A push-box handle 7-4 is hinged to the other end of the drive platform 7-2. The end of the push-box handle 7-4 is configured as a hook-like structure, with an arc-shaped upper end and a flat front end. A spring 7-5 is installed between the push-box handle 7-4 and the drive platform 7-2. In addition, the drive mechanism 7 also includes two limiting rails 7-6 fixedly installed at the bottom of the straight section of the annular guide rail 1. Two sets of third pulleys 7-7, each adapted to one of the two limiting rails 7-6, are symmetrically arranged on the side of the drive platform 7-2.

[0033] Each of the conveying trolleys 2 has a wedge 8 fixedly installed at its bottom, and the bottom of each wedge 8 is inclined upward along the direction of travel of the trolley.

[0034] Each of the aforementioned trolleys is equipped with a sand box 9, and each of the aforementioned sand boxes 9 has an opening structure at the top and bottom.

[0035] The outer side of the annular guide rail is sequentially provided with a filler collection silo 10, a sand box pouring position 11, and a vibrating conveyor screen 12. The lower end of the filler collection silo 10 is funnel-shaped and is provided with a screw feeder 13 connected to its interior. A push-type box-removing mechanism 14 is provided between the vibrating conveyor screen 12 and the annular guide rail.

[0036] A sand box retrieval mechanism 15 is provided on the outer side of the filling material collection silo 10, which allows the sand boxes to move up and down. The sand box retrieval mechanism 15 includes a first frame 15-1. A vertical second telescopic rod 15-2 is fixedly installed in the middle of the first frame 15-1. The telescopic end of the second telescopic rod 15-2 is fixedly connected to a first lifting frame 15-3 slidably installed on the first frame 15-1. Two horizontal third telescopic rods 15-4 are symmetrically installed on the upper part of the first lifting frame 15-3. The free ends of the two third telescopic rods 15-4 are respectively fixedly connected to two first gripping frames 15-5 symmetrically slidably installed on the first lifting frame 15-3. A first gripping hook 15-6 is installed on the side of each first gripping frame 15-5. A mating inclined plate 16 is fixedly installed on both sides of each sand box 9, tilting outwards.

[0037] The push-type box-retrieving mechanism 14 includes a second frame 14-1 fixedly mounted outside the vibrating conveyor screen 12 and the annular guide rail 1. A push-retrieving platform 14-2 is mounted on the second frame 14-1. Motors 14-3 are respectively mounted at both ends of the push-retrieving platform 14-2. The drive shafts of each motor 14-3 are respectively connected to the input end of a dual-output shaft reducer 14-5. Transmission gears 14-6 are respectively mounted on the two output shafts of the dual-output shaft reducer 14-5, and each transmission gear 14-6 meshes with a transmission rack 14-7 symmetrically mounted on the second frame 14-1. Two sets of rollers 14-8 are rotatably mounted at both ends of the upper part of the push-retrieving platform 14-2, respectively contacting the upper surface and side surface of the second frame 14-1. A vertical fourth telescopic rod 14-9 is fixedly installed on the upper part of the pushing platform 14-2. The telescopic end of the fourth telescopic rod 14-9 is fixedly connected to the second lifting frame 14-10. Two horizontal fifth telescopic rods 14-11 are symmetrically installed on the second lifting frame 14-10. The telescopic end of each fifth telescopic rod 14-11 is connected to the second gripping frame 14-12. A second gripping hook 14-13 adapted to the mating inclined plate 16 is provided on the side of each second gripping frame 14-12. A push frame 14-14 is fixedly installed at the bottom of the pushing platform 14-2. Two horizontal sixth telescopic rods 14-15 are symmetrically installed at the bottom of the push frame 14-14. A push block 14-16 is fixedly installed at the end of each sixth telescopic rod 14-15. When the push-type box-retrieving mechanism in this embodiment is working, as follows... Figure 6 As shown, the pusher block contacts the sand box by extending the two sixth telescopic rods 14-15. After the two motors start, the pushing platform moves linearly along the second frame, thereby pushing the sand box from the conveying trolley to the vibrating screen. Then, the second grab hook of the second grabbing frame cooperates with the inclined plate of the sand box by the two fifth telescopic rods. The fourth telescopic rod retracts to lift the sand box upward.

[0038] The vibrating conveyor screening machine 12 and the push-type box-retrieving mechanism are both covered by a first gas collecting hood 17. The first gas collecting hood 17 is connected to the first bag filter 19 via a first waste gas conveying pipe 18. The upper discharge port of the vibrating conveyor screening machine 12 is connected to the external casting block sand collecting hopper 20, and the lower discharge port of the vibrating conveyor screening machine 12 is connected to the external sand powder collecting hopper 21.

[0039] In addition, the sand and fine powder collection hopper is connected to the filler collection silo 10 via a steel sand elevator 22, so that the collected sand and fine powder can be lifted and transported to the filler collection silo by the steel sand elevator for recycling. The steel sand elevator 22 can be configured as a screw conveyor, conveyor belt, or other conveying device.

[0040] The sand box pouring position 11 is located on the annular track 1 near the intermediate frequency circuit, and a side suction dust collection hood 23 is installed on its upper side. The side suction dust collection hood 23 is connected to the second bag filter 25 and the dual-stage activated carbon adsorption box 26 through the second exhaust gas conveying pipe 24.

[0041] A second gas collection hood 27 is fixedly installed above the annular guide rail 1 near the sand casting position 11. Specifically, the second gas collection hood 27 is installed above 6-8 adjacent sand boxes along the casting line direction, rear of the sand casting position. The upper part of the second gas collection hood 27 is connected to the second bag filter 25 and the dual-stage activated carbon adsorption box 26 via a third waste gas conveying pipe 28 to collect and treat the waste gas generated during the casting process.

[0042] The working principle of this invention is as follows:

[0043] First, the sand box located below the first gripping frame is lifted by the sand box picking and placing mechanism. The pre-made coated sand core is placed on the conveying trolley and positioned so that the coated sand core is in the center of the conveying trolley. The chilled iron core is placed on the top of the coated sand core. Then, the sand box to be gripped is lowered by the sand box picking and placing mechanism.

[0044] Then, the drive mechanism drives multiple conveyor trolleys to move the sand box with the coated sand core placed inside to the bottom of the screw feeder's feeding outlet. The screw feeder is then turned on, and the sand box is filled with filler material and compacted. This process is repeated until all the sand boxes are filled with coated sand cores and chilled iron cores, filled with filler material, and compacted.

[0045] As the sand box filled with filler material passes through the sand box pouring position in sequence with the conveying trolley, the pre-melted copper alloy liquid is poured into the riser of the film-coated sand core inside the sand box. The side-suction gas collection hood and the third gas collection hood suck away the smoke and exhaust gas generated during pouring, and then transport it through the exhaust gas conveying pipeline to the bag filter and the bipolar activated carbon adsorption box for treatment before being discharged through the exhaust stack.

[0046] When the sand box, after being poured, moves with the conveyor trolley to the position below the push-type box-retrieving mechanism, the push-type box-retrieving mechanism pushes the sand box onto the vibrating conveyor screen, then lifts the sand box, and after the sand falls, the push-type box-retrieving mechanism puts the empty sand box back onto the conveyor trolley of the circular pouring line. The copper alloy glass mold castings, sand box fillers, chilled iron cores, etc., already poured in the sand box are screened by the vibrating conveyor screener. The screened castings and block sand enter the casting block sand collection hopper through the upper discharge port of the vibrating conveyor screener. The screened sand and fine powder enter the sand and fine powder collection hopper through the lower discharge port, and are then lifted and transported by the steel sand elevator to the filler collection silo for recycling.

[0047] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A copper alloy glass mold casting coated sand annular pouring line, characterized in that: The system includes an annular guide rail, comprising two elongated oval tracks arranged internally and externally. Multiple conveying trolleys are evenly arranged on the upper part of the annular guide rail, with adjacent trolleys connected end-to-end via universal joints. Two drive mechanisms for moving the multiple conveying trolleys are located on the lower part of the annular guide rail. Each trolley holds a sand box, each sand box having an open top and bottom structure. A filler collection silo, a sand box pouring position, and a vibrating conveyor screen are sequentially arranged outside the annular guide rail. The lower end of the filler collection silo is funnel-shaped and equipped with a screw feeder connected to its interior. A push-type box-removing mechanism is provided between the vibrating conveyor screen and the annular guide rail. The driving mechanism includes a first telescopic rod fixedly mounted on the ground. The telescopic end of the first telescopic rod is fixedly connected to one end of a driving platform slidably mounted at the bottom of the straight section of the annular guide rail. The upper part of the driving platform is rotatably equipped with two sets of second pulleys respectively adapted to the two elongated oval tracks. The other end of the driving platform is hinged with a push box handle. The end of the push box handle is configured as a hook-like structure, and a spring is provided between the push box handle and the driving platform. Each of the conveying trolleys has a wedge fixedly mounted at its bottom, and the bottom of each wedge is inclined upward along the direction of travel of the trolley. The push-type box-retrieving mechanism includes a second frame fixedly installed outside the vibrating conveyor screen and the annular guide rail. A push-retrieving platform is installed on the second frame. Motors are installed at both ends of the push-retrieving platform. The drive shafts of each motor are connected to the input end of a dual-output shaft reducer. Transmission gears are installed on the two output shafts of the dual-output shaft reducer. Each transmission gear meshes with a transmission rack symmetrically arranged on the second frame. Two sets of rollers are rotatably installed at both ends of the upper part of the push-retrieving platform, respectively contacting the upper surface and side of the second frame. A vertical fourth telescopic rod is fixedly installed on the upper part of the push-retrieving platform. The telescopic end of the fourth telescopic rod is fixedly connected to a second lifting frame. Two fifth telescopic rods are symmetrically arranged on the second lifting frame. The telescopic end of each fifth telescopic rod is fixedly connected to a second gripping frame. A second gripping hook is installed on the side of each second gripping frame. A pusher frame is fixedly installed at the bottom of the pushing platform. Two sixth telescopic rods are symmetrically arranged at the bottom of the pusher frame, and a push block is fixedly installed at the end of each sixth telescopic rod. During operation, the two sixth telescopic rods extend to make the push block contact the sand box. After the two motors are started, the pushing platform moves linearly along the second frame, thereby pushing the sand box from the conveying trolley to the vibrating screen. Then, the two fifth telescopic rods make the second gripping hook of the second gripping frame cooperate with the inclined plate of the sand box. The fourth telescopic rod retracts to lift the sand box upward. After the sand falls, the push-type box-retrieving mechanism puts the empty sand box back onto the conveying trolley of the circular casting line.

2. The copper alloy glass mold casting coated sand annular pouring line according to claim 1, characterized in that: The spacing between all parts of the two elongated oval tracks is the same, and the bottom of the conveying trolley is provided with two sets of first pulleys that are adapted to the two elongated oval tracks respectively.

3. The copper alloy glass mold casting coated sand annular pouring line according to claim 2, characterized in that: Multiple pairs of support legs are evenly arranged on the ground below the annular guide rail, and a pair of fixing plates are arranged between each pair of support legs. A crossbeam is fixedly installed on the upper part of the two support legs of each pair. The bottom of the annular guide rail is fixedly connected to the upper part of each crossbeam, and the two sides of the annular guide rail are fixedly connected to each fixing plate.

4. The copper alloy glass mold casting coated sand annular pouring line according to claim 1, characterized in that: A sand box retrieval mechanism is provided on the outside of the filling material collection silo. The sand box retrieval mechanism includes a first frame. A vertical second telescopic rod is fixedly installed in the middle of the first frame. The telescopic end of the second telescopic rod is fixedly connected to a first lifting frame that is slidably installed on the first frame. Two horizontal third telescopic rods are symmetrically arranged on the upper part of the first lifting frame. The free ends of the two third telescopic rods are respectively fixedly connected to two first gripping frames that are symmetrically slidably installed on the first lifting frame. A first gripping hook is provided on the side of each first gripping frame. The two sides of each sand box are respectively provided with outwardly inclined plates.

5. The copper alloy glass mold casting coated sand annular pouring line according to claim 1, characterized in that: The vibrating conveyor screen and the push-type box-collecting mechanism are both covered by a first gas collection hood. The first gas collection hood is connected to the first bag filter through a first waste gas conveying pipe. The upper discharge port of the vibrating conveyor screen is connected to the external casting block sand collection hopper, and the lower discharge port of the vibrating conveyor screen is connected to the external sand powder collection hopper.

6. The copper alloy glass mold casting coated sand annular pouring line according to claim 5, characterized in that: The sand powder collection hopper is connected to the filler collection silo via a steel sand elevator.

7. The copper alloy glass mold casting coated sand annular pouring line according to claim 1, characterized in that: A side-suction dust collection hood is provided above the sand casting position. The side-suction dust collection hood is connected to the second bag filter and the dual-stage activated carbon adsorption box through the second exhaust gas conveying pipe.

8. The copper alloy glass mold casting coated sand annular pouring line according to claim 7, characterized in that: A second gas collection hood is fixedly installed above the annular guide rail near the sand box pouring position. The upper part of the second gas collection hood is connected to the second bag filter and the dual-stage activated carbon adsorption box through a third waste gas conveying pipe.

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