A valve casting production device

Abstract

The application discloses a kind of valve casting casting production devices, belong to valve casting technical field, including mounting bracket, the side of the mounting bracket is equipped with conveying mechanism for conveying sand box, the middle part of mounting bracket outer wall is equipped with casting unit, the casting unit includes the storage part assembled on mounting bracket, the storage part is assembled on the two first electric hydraulic rods of mounting bracket outer wall and is realized by embracing from the spread to side by side;By being equipped with the casting unit, the switching of the embracing / side by side state of storage part is realized, when embracing, single tank is conveniently filled into tank after melting material, after being spread, three independent storage units are formed, can be synchronized for three sand boxes casting, solve the temperature gradient increase, fluidity drop problem caused by traditional single tank multiple start-stop, effectively improve casting efficiency, and guarantee the quality of casting.

Description

Technical Field

[0001] This invention relates to the field of valve casting technology, and in particular to a casting production apparatus for valve casting. Background Technology

[0002] As a key device for fluid control, valves are manufactured with a high degree of dependence on precision casting processes and advanced equipment. From traditional sand casting to precision investment casting, and then to intelligent and green production, technological advancements have continuously driven improvements in valve performance, efficiency, and environmental protection.

[0003] In traditional valve casting processes, single-tank casting is often used, which can only complete the casting of a single sand box at a time. However, the capacity of a single tank is often the amount of multiple sand boxes. This requires multiple start-stop cycles to completely use up the material in the tank. However, the interval between each casting causes an increase in the temperature gradient of the molten metal in the storage tank. The metal near the tank wall is prone to cooling and solidification, requiring frequent stirring or secondary heating. This not only reduces production efficiency but also causes uneven filling of the sand box due to the decreased fluidity of the molten metal, directly affecting the density and dimensional accuracy of the valve casting. Summary of the Invention

[0004] The purpose of this invention is to provide a casting production device for valve casting, which addresses the problem that the temperature gradient of molten metal in the storage tank increases with each casting interval, and the metal near the tank wall is prone to cooling and solidification, requiring frequent stirring or secondary heating.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A casting production apparatus for valve casting includes a mounting frame, a conveying mechanism for transporting sand boxes is provided on one side of the mounting frame, a casting unit is assembled in the middle of the outer wall of the mounting frame, the casting unit includes a storage component assembled on the mounting frame, the storage component is expanded from a ring shape to a side-by-side shape by two first electro-hydraulic rods assembled on the outer wall of the mounting frame; The storage unit has a feeding pipe inserted into it through a feeding groove. The bottom of the outer wall of the mounting frame is equipped with a feeding assembly. The feeding assembly includes a guide pipe mounted on the mounting frame via a bracket. A guide pipe is inserted into the guide pipe. The guide pipe is connected to the feeding pipe via a second electro-hydraulic rod mounted on the bracket, and controls the feeding pipe to move upward so as to control the molten raw material in the storage unit to be injected into the sand box through the feeding pipe.

[0006] As a further description of the above technical solution: The storage component includes a central storage tank, and both ends of the central storage tank are hinged to side storage tanks via spring hinges. A positioning frame is fixed on the outer wall of the central storage tank, and one end of the positioning frame is fixed to the mounting frame. The two ends of the first electro-hydraulic rod are rotatably connected to the mounting frame and the outer wall of the side storage tank, respectively.

[0007] As a further description of the above technical solution: The feeding assembly also includes a connecting frame fixedly sleeved on the outer surface of the guide tube, and one end of the second electro-hydraulic rod is connected to the connecting frame.

[0008] As a further description of the above technical solution: The top of the outer wall of the feeding pipe is provided with a feeding groove, and a retaining tube is sleeved on the outer surface of the feeding pipe.

[0009] As a further description of the above technical solution: The top of the outer wall of the mounting frame is equipped with a feeding splash guard assembly. The feeding splash guard assembly includes a slide rail fixed on the mounting frame, and a splash guard is slidably connected to the slide rail via a slider. A cover side frame adapted to the storage component is fixed on the inner wall of the splash guard.

[0010] As a further description of the above technical solution: The positioning frame is equipped with a third electro-hydraulic rod, one end of which is connected to the splash guard.

[0011] As a further description of the above technical solution: The middle part of the outer wall of the mounting frame is also equipped with a rope drive unit. The rope drive unit includes two rollers that are rotatably connected to the mounting frame through bearing seats. The two rollers are connected together by a connecting shaft. Pull ropes are wound on the rollers, and one end of each pull rope is connected to a side storage tank.

[0012] As a further description of the above technical solution: A motor is mounted on the outer wall of the mounting frame near one of the reels, and the output end of the motor is connected to one end of the reel. A guide tube is fixed on the lower part of the outer wall of the mounting frame near the reel, and one end of the pull rope passes through the guide tube and is connected to the side storage tank.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: By setting up casting units, the switching between the surrounding / side-by-side state of the storage components is realized. When surrounded, it is convenient to load the molten material into the single tank. When unfolded, it forms three independent storage units, which can simultaneously cast three sand boxes. This solves the problem of increased temperature gradient and decreased fluidity caused by multiple start-ups and shutdowns of traditional single tanks, effectively improving casting efficiency and ensuring casting quality. Through the coordinated action of the splash guard and the cover frame, during the circumferential loading stage, the third electric hydraulic rod drives the splash guard downward to cover it, and the cover frame accurately covers the top of the tank fitting area. This not only prevents the waste of raw materials and the risk of burns in the operating area caused by splashing molten metal, but also avoids the solidification of material residues affecting the reliability of the next bonding and sealing. Attached Figure Description

[0014] Figure 1 A schematic diagram of the overall structure provided according to an embodiment of the present invention is shown; Figure 2 A schematic diagram of the storage components arranged side by side according to an embodiment of the present invention is shown; Figure 3 A schematic diagram of a splash guard provided according to an embodiment of the present invention is shown from a first perspective; Figure 4 This diagram shows a cross-section of a side-splitting storage tank according to an embodiment of the present invention. Figure 5 A schematic diagram of a splash guard provided according to an embodiment of the present invention is shown from a first perspective; Figure 6 A schematic diagram showing the position of the third electro-hydraulic rod provided according to an embodiment of the present invention is shown; Figure 7 A schematic diagram of the internal structure of the splash guard provided according to an embodiment of the present invention is shown; Figure 8 This diagram illustrates the position of the feed tube after it has moved upward, according to an embodiment of the present invention. Figure 9 A schematic diagram of the guide tube after being cut open according to an embodiment of the present invention is shown; Figure 10 The present invention provides an embodiment of the invention. Figure 4 Enlarged view of point A in the middle; Figure 11 The present invention provides an embodiment of the invention. Figure 8 Enlarged view of point B in the middle; Figure 12 The present invention provides an embodiment of the invention. Figure 9 Enlarged view of point C in the middle; Figure 13 A schematic diagram of the structure of the storage component in a surrounding state according to an embodiment of the present invention is shown; Figure 14 A schematic diagram of the structure of the pull-rope controlled side storage tank after deployment is shown according to an embodiment of the present invention; Figure 15 A schematic diagram of the structure of a rope drive unit provided according to an embodiment of the present invention is shown.

[0015] Legend: 10. Mounting bracket; 20. Conveying mechanism; 30. Casting unit; 31. Storage component; 311. Central storage tank; 312. Side storage tank; 32. First electro-hydraulic rod; 33. Feed pipe; 34. Feed assembly; 341. Guide pipe; 342. Guide tube; 343. Second electro-hydraulic rod; 344. Connecting frame; 35. Feed chute; 36. Holding tube; 40. Feeding splash guard assembly; 41. Splash guard; 42. Cover side frame; 43. Third electric hydraulic rod; 50. Rope drive unit; 51. Reel; 52. Motor; 53. Pull rope; 54. Guide tube. Detailed Implementation

[0016] 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 embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention. Example

[0017] like Figure 1 - Figure 12 As shown, the present invention provides: A casting production apparatus for valve casting includes a mounting frame 10. A conveying mechanism 20 for transporting a sand box is provided on one side of the mounting frame 10. In particular, the sand box is a mold for valve casting, and its surface is provided with a casting port. Meanwhile, the conveying mechanism 20 is a known technology and will not be described in detail here. A casting unit 30 is assembled in the middle of the outer wall of the mounting frame 10. The casting unit 30 includes a storage component 31 assembled on the mounting frame 10. The storage component 31 is expanded from a ring shape to a side-by-side shape by two first electric hydraulic rods 32 assembled on the outer wall of the mounting frame 10. The storage unit 31 includes a central storage tank 311, and both ends of the central storage tank 311 are hinged to side storage tanks 312 via spring hinges. A positioning frame is fixed on the outer wall of the central storage tank 311, and one end of the positioning frame is fixed to the mounting frame 10, so that the position of the central storage tank 311 can be kept fixed. At the same time, under the action of the spring hinge, it can provide a force to drive the side storage tanks 312 to fit together with the central storage tank 311. The two ends of the first electric hydraulic rod 32 are respectively rotatably connected to the mounting frame 10 and the outer wall of the side storage tanks 312. Preferably, a support frame is fixed on the outer wall of the mounting frame 10, and the top of the support frame fits against the bottom of the central storage tank 311. When the side storage tanks 312 and the central storage tank 311 are wrapped together, the support frame will also contact the side storage tanks 312, thereby providing auxiliary support for the storage tanks to ensure stability when feeding materials into the tanks. like Figure 3 , Figure 4 , Figure 9 and Figure 10 As shown, a feeding pipe 33 is inserted into the storage component 31 through a feeding groove. Specifically, the feeding groove is T-shaped, and the feeding pipe 33 is also T-shaped with a closed top. At the same time, due to the limiting groove of the feeding groove, the feeding pipe 33 cannot move downwards, but can only move upwards under the action of external force. The top of the outer wall of the discharge pipe 33 is provided with a feed chute 35, and a retaining tube 36 is fitted on the outer surface of the discharge pipe 33. Specifically, the three retaining tubes 36 are respectively fixed to the bottom of the central storage tank 311 and the two side storage tanks 312. When the top of the discharge pipe 33 is in the feed chute, the feed chute 35 is closed by the retaining tubes 36. When the discharge pipe 33 moves upward, the feed chute 35 gradually moves upward into the storage tank. In this state, the material in the tank will enter the discharge pipe 33 through the feed chute 35, and then be injected into the sand box with the cooperation of the guide pipe 342 and the guide pipe 341. It is worth noting that in order to ensure that the discharge pipe 33 does not rotate when moving up and down, a vertical sliding groove is provided on the inner wall of the retaining tube 36, and a vertical sliding block adapted to the vertical sliding groove is fixed on the outer wall of the discharge pipe 33. With this cooperation, the discharge pipe 33 can only move vertically up and down. like Figure 2 , Figure 3 , Figure 8 , Figure 9 and Figure 12 As shown, a feeding assembly 34 is installed at the bottom of the outer wall of the mounting frame 10. The feeding assembly 34 includes a guide pipe 341 mounted on the mounting frame 10 via a bracket. A guide pipe 342 is inserted into the guide pipe 341. The guide pipe 342 is connected to the feeding pipe 33 via a second electric hydraulic rod 343 mounted on the bracket, and controls the feeding pipe 33 to move upward so as to control the molten raw material in the storage component 31 to be injected into the sand box through the feeding pipe 33. The feeding assembly 34 also includes a connecting frame 344 fixedly sleeved on the outer surface of the guide tube 342. One end of the second electro-hydraulic rod 343 is connected to the connecting frame 344. Specifically, the guide tube 342 is T-shaped, and the top end of the guide tube 342 is adapted to the feeding tube 33. Preferably, a ring seat is fixedly sleeved on the bottom of the outer wall of the feeding tube 33. After the material is loaded into the sub-storage tank, the first electro-hydraulic rod 32 pulls the two side sub-storage tanks 312 to rotate to a position parallel to the central sub-storage tank 311. At this time, three sand boxes can be cast simultaneously, which greatly improves the casting efficiency. This improves efficiency and avoids the problem of the temperature of the remaining material in the tank gradually decreasing as the casting time increases, which is caused by only being able to cast one sand box at a time. In this state, the connecting frame 344 is pushed upward by the second electric hydraulic rod 343, thereby causing the guide tube 342 to move upward. When the guide tube 342 is fitted onto the bottom end of the discharge tube 33, the bottom end of the discharge tube 33 will abut against the inner bottom wall of the T-shaped end of the guide tube 342, and the top end of the guide tube 342 will abut against the ring seat. In this state, when the guide tube 342 continues to move upward, it will drive the discharge tube 33 to move upward. Preferably, an upper guide rod is fixed to the inner top wall of the feed pipe 33, and a horizontal bar is fixed to the top of the inner wall of the guide pipe 342, while a lower guide rod is fixed to the middle of the horizontal bar. When the guide pipe 342 is fitted onto the bottom end of the feed pipe 33, the top end of the lower guide rod will contact the bottom end of the upper guide rod, and the lower guide rod and the upper guide rod have the same diameter. The material entering the feed pipe 33 will be guided into the sand box under the action of the guide rod.

[0018] like Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, a feeding splash guard 40 is mounted on the top of the outer wall of the mounting frame 10. The feeding splash guard 40 includes a slide rail fixed on the mounting frame 10, and a splash guard 41 is slidably connected to the slide rail via a slider. A cover frame 42 adapted to the storage component 31 is fixed on the inner wall of the splash guard 41. In particular, the cover frame 42 is adapted to the central storage tank 311 and the side storage tank 312 after being surrounded. After the splash guard 41 is placed on the top of the storage tank, the cover frame 42 will be placed on the top of the contact position of the storage tank to protect this part of the area, so that the contact part will not come into contact with the material, and thus there will be no material residue, thereby ensuring the fit during the next contact. The positioning frame is equipped with a third electro-hydraulic rod 43, one end of which is connected to the splash guard 41; Specifically, during the enclosure of the sub-tanks (when molten material is injected into the tanks in the enclosure state), the third electro-hydraulic rod 43 drives the splash guard 41 downwards to cover the surface of the enclosure sub-tanks. In this state, the cover frame 42 will cover the top edge of the sub-tank. At this time, the molten material in the furnace can be poured into the sub-tank. The capacity of a single sub-tank is the amount required for casting a single sand box. When all sub-tanks are full, the third electro-hydraulic rod 43 drives the splash guard 41 upwards, away from the sub-tanks. At this time, the first electro-hydraulic rod 32 controls the side sub-tank 312 to expand. When the tank is opened to be parallel to the central storage tank 311, the discharge pipes 33 at the bottom of the three storage tanks will correspond to the guide pipes 342. At this time, the connecting frame 344 is pushed upward by the second electric hydraulic rod 343, which in turn moves the guide pipe 342 upward. After the guide pipe 342 is fitted onto the bottom of the discharge pipe 33, it continues to move upward, which will push the discharge pipe 33 upward, so that the feed chute 35 gradually moves upward into the storage tank. In this state, the material in the tank will enter the discharge pipe 33 through the feed chute 35, and then be injected into the sand box with the cooperation of the guide pipe 342 and the guide pipe 341. After the injection is completed, the sand box that has been cast is transported to the cooling zone by the conveying mechanism 20, and a new sand box is moved to the bottom of the unloading component 34. The above operation is repeated for the next casting, and so on. Preferably, the material is poured into the individual storage tanks separately; or it is poured into one of the storage tanks, and when that tank is full, the material will flow into the other storage tanks until all of them are full.

[0019] Specifically, in this embodiment, the valve casting production apparatus is in operation / use as follows: 1. Initial state: The first electric hydraulic rod 32 retracts, and the side storage tank 312 is held in a hugging state with the middle storage tank 311 by the spring hinge. The third electric hydraulic rod 43 drives the splash guard 41 to move downward, and the cover frame 42 covers the top of the joint of the storage tanks. 2. Loading operation: Molten metal is poured into the central storage tank 311 and the two side storage tanks 312 through the furnace (or poured into a single tank and the molten metal flows naturally to other storage tanks). The splash guard 41 prevents splashing, and the side frame 42 protects the sealing of the joint. 3. Casting preparation: The third electric hydraulic rod 43 drives the splash guard 41 to move upward away from the sub-storage tank; the first electric hydraulic rod 32 retracts, pulling the side sub-storage tank 312 to unfold to be parallel with the middle sub-storage tank 311. At this time, the discharge pipe 33 at the bottom of the three sub-storage tanks corresponds to the position of the guide pipe 342. 4. Casting execution: The second electric hydraulic rod 343 pushes the connecting frame 344 upward, the guide pipe 342 is sleeved on the bottom end of the discharge pipe 33 and continues to move upward, driving the discharge pipe 33 to slide upward, the feed chute 35 enters the storage tank, and the molten metal is injected into the sand box through the feed chute 35 → discharge pipe 33 → guide pipe 342 → guide pipe 341; the upper guide rod and the lower guide rod cooperate to ensure that the molten metal flows smoothly into the sand box; 5. Sand box replacement: The conveying mechanism 20 moves the completed sand box to the cooling area, and the new sand box is moved to the bottom of the feeding component 34. Repeat steps 2-4 for the next casting. Example

[0020] like Figure 13 - Figure 15 As shown, a rope drive unit 50 is also installed in the middle of the outer wall of the mounting frame 10. The rope drive unit 50 includes two rollers 51 rotatably connected to the mounting frame 10 through bearing seats, and the two rollers 51 are connected together through a connecting shaft. Pull ropes 53 are wound on the rollers 51, and one end of each pull rope 53 is connected to one of the side storage tanks 312. A motor 52 is installed on the side of the outer wall of the mounting frame 10 near one of the rollers 51, and the output end of the motor 52 is connected to one end of the roller 51. A guide tube 54 is fixed on the lower part of the outer wall of the mounting frame 10 near the roller 51. One end of the pull rope 53 passes through the guide tube 54 and is connected to the side storage tank 312. Specifically, in actual use, a rope drive unit 50 can be used to replace the first electric hydraulic rod 32 to control the rotation of the side storage tank 312. When the rope drive unit 50 is used, after the storage tank is filled with material, the motor 52 is started to control the reel 51 to rotate clockwise, thereby winding the rope 53. During the winding process, the two side storage tanks 312 are gradually pulled to rotate to a position parallel to the central storage tank 311. At this time, the material is fed into the sand box by the feeding component 34 to complete the valve casting. After casting is completed, the feeding assembly 34 is reset and the winding wheel 51 is rotated counterclockwise by the motor 52 to unwind the rope 53. During the unwinding process, the side storage tank 312 is gradually driven to reset to the state of embracing the middle storage tank 311 under the action of the spring hinge. It is worth noting that when using the rope drive unit 50, the number of its side storage tanks 312 can be multiple, such as two or four on each side, etc. That is to say, five or seven storage tanks can be combined to form the storage component 31 (the combined storage component 31 is cylindrical in shape). At the same time, it should be noted that the pull rope 53 needs to be connected to the outermost side storage tank 312. In particular, when there are five or more storage tanks, the size of the individual storage tank needs to be adapted so that the five storage tanks can be combined into a cylinder. It should also be noted that the capacity changes after the size is changed. This storage tank is then suitable for making sand boxes for valves of other specifications.

[0021] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A casting production apparatus for valve casting, comprising a mounting frame (10), wherein a conveying mechanism (20) for conveying a sand box is provided on one side of the mounting frame (10), characterized in that, A casting unit (30) is assembled in the middle of the outer wall of the mounting frame (10). The casting unit (30) includes a storage component (31) assembled on the mounting frame (10). The storage component (31) is expanded from a ring shape to a side-by-side shape by two first electric hydraulic rods (32) assembled on the outer wall of the mounting frame (10). The storage component (31) has a discharge pipe (33) inserted into it through a discharge slot. The bottom of the outer wall of the mounting frame (10) is equipped with a discharge assembly (34). The discharge assembly (34) includes a guide pipe (341) mounted on the mounting frame (10) through a bracket. A guide pipe (342) is inserted into the guide pipe (341). The guide pipe (342) is connected to the discharge pipe (33) through a second electric hydraulic rod (343) mounted on the bracket, and controls the discharge pipe (33) to move upward so as to control the molten raw material in the storage component (31) to be injected into the sand box through the discharge pipe (33).

2. The casting production apparatus for valve casting according to claim 1, characterized in that, The storage component (31) includes a central storage tank (311), and both ends of the central storage tank (311) are hinged to side storage tanks (312) by spring hinges. A positioning frame is fixed on the outer wall of the central storage tank (311), and one end of the positioning frame is fixed to the mounting frame (10). Both ends of the first electric hydraulic rod (32) are rotatably connected to the mounting frame (10) and the outer wall of the side storage tank (312), respectively.

3. The casting production apparatus for valve casting according to claim 1, characterized in that, The feeding assembly (34) also includes a connecting frame (344) fixedly sleeved on the outer surface of the guide tube (342), and one end of the second electric hydraulic rod (343) is connected to the connecting frame (344).

4. The casting production apparatus for valve casting according to claim 3, characterized in that, The top of the outer wall of the feeding pipe (33) is provided with a feeding groove (35), and a retaining tube (36) is sleeved on the outer surface of the feeding pipe (33).

5. The casting production apparatus for valve casting according to claim 1, characterized in that, The top of the outer wall of the mounting frame (10) is equipped with a feeding splash guard assembly (40). The feeding splash guard assembly (40) includes a slide rail fixed on the mounting frame (10), and a splash guard (41) is slidably connected to the slide rail by a slider. A cover frame (42) adapted to the storage component (31) is fixed on the inner wall of the splash guard (41).

6. A casting production apparatus for valve casting according to claim 5, characterized in that, The positioning frame is equipped with a third electro-hydraulic rod (43), one end of which is connected to the splash guard (41).

7. The casting production apparatus for valve casting according to claim 1, characterized in that, The middle part of the outer wall of the mounting frame (10) is also equipped with a rope drive unit (50). The rope drive unit (50) includes two rollers (51) rotatably connected to the mounting frame (10) through bearing seats, and the two rollers (51) are connected together through a connecting shaft. Pull ropes (53) are wound on the rollers (51), and one end of the two pull ropes (53) is connected to two side storage tanks (312) respectively.

8. A casting production apparatus for valve casting according to claim 7, characterized in that, A motor (52) is mounted on the outer wall of the mounting frame (10) near one of the reels (51), and the output end of the motor (52) is connected to one end of the reel (51). A guide tube (54) is fixed on the lower part of the outer wall of the mounting frame (10) near the reel (51). One end of the pull rope (53) passes through the guide tube (54) and is connected to the side storage tank (311).

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