A pump body casting device

Abstract

The application relates to the field of forming equipment, and a pump body casting device which comprises a rack, a forming mechanism, a first driving cylinder and an injection mechanism. The forming mechanism comprises an upper die and a lower die. The first driving cylinder drives the upper die to slide. The upper die cooperates with the lower die to form a forming cavity. A feeding port is arranged at a cavity wall of the forming cavity. The injection mechanism comprises a melting chamber and a feeding pipe. The melting chamber is connected to the rack. The melting chamber is used for heating and melting the coated sand into a molten state. The melting chamber is provided with a discharging port. The feeding pipe is connected to the sand storage chamber and the melting chamber. An operator stores the coated sand into the sand storage chamber. The coated sand enters the melting chamber through the feeding pipe. The melting chamber heats the coated sand to make the coated sand in a molten state. The first driving cylinder drives the upper die to slide and combine with the lower die. The coated sand in the molten state in the melting chamber enters the forming cavity through the discharging port and the feeding port. The automatic pouring of the forming die is realized. The operation time of the operator for pouring the forming die is reduced. The production efficiency of the equipment is improved.

Description

Technical Field

[0001] This application relates to the field of molding equipment, and in particular to a pump body casting apparatus. Background Technology

[0002] Coated sand is the main material used in coated sand casting. Coated sand has the advantages of good fluidity and suitable strength, and the sand molds and sand cores produced are clear in outline and have a dense structure. In particular, it can produce complex sand cores, and the castings are easy to clean.

[0003] Traditional pump production methods rely on wax molding, which is cumbersome for workers, inefficient, and costly. While existing coated sand core shooting molds improve product quality, many of them require separate fabrication of the sand mold and core. This necessitates increasing the number of core shooting machines and workers, resulting in higher production costs and requiring further improvement in production efficiency. Utility Model Content

[0004] In order to improve the working efficiency of equipment in producing pump bodies, this application provides a pump body casting device.

[0005] The pump body casting device provided in this application adopts the following technical solution:

[0006] A pump body casting device includes a frame, a forming mechanism, a first drive cylinder, and an injection molding mechanism. The forming mechanism includes an upper mold and a lower mold. The lower mold is connected to the frame, and the upper mold is slidably connected to the frame. The first drive cylinder is connected to the frame and is used to drive the upper mold to slide. The upper mold and the lower mold cooperate to form a forming cavity. A feed port is provided on the wall of the forming cavity and is connected to the outside. The injection molding mechanism includes a melting chamber and a feeding pipe. The melting chamber is connected to the frame and is used to heat and melt coated sand into a molten state. The melting chamber is provided with a discharge port, which is connected to the feed port. The frame is connected to a sand discharge chamber. One end of the feeding pipe is connected to the sand discharge chamber, and the other end of the feeding pipe is connected to the melting chamber.

[0007] By adopting the above technical solution, the operator stores the coated sand in the sand discharge chamber, and the coated sand enters the melting chamber through the feeding pipe. The melting chamber heats the coated sand to a molten state. The first drive cylinder drives the upper mold to slide and close with the lower mold. The molten coated sand in the melting chamber enters the molding cavity through the discharge port and the feed port, realizing automatic casting of the molding mold, reducing the operator's operation time for casting the molding mold, and improving the production efficiency of the equipment.

[0008] Preferably, the molding cavity is provided with a plurality of molding cavities, which are distributed at intervals along the circumference of the lower mold, and the number of injection molding mechanisms is the same as the number of molding cavities and corresponds one-to-one.

[0009] By adopting the above technical solution, multiple molding cavities are provided, and the number of injection molding mechanisms and the number of molding cavities are the same and correspond one-to-one, which facilitates the molding of multiple products at one time and improves the production efficiency of the equipment.

[0010] Preferably, the lower mold is connected to a positioning post on the side near the upper mold, and the upper mold is provided with a positioning groove on the side near the lower mold, and the positioning post is used to be embedded in the positioning groove.

[0011] By adopting the above technical solution, the positioning pins and positioning grooves work together to help the upper and lower molds to be accurately positioned when they are closed, which facilitates the upper and lower molds to cooperate in forming the molding cavity and improves the production quality of the equipment.

[0012] Preferably, the molding mechanism further includes a plurality of elastic buffer rods, which are respectively connected to the upper mold and the lower mold, and are used to abut against the lower mold or the upper mold.

[0013] By adopting the above technical solution, the elastic buffer bar can effectively absorb the impact force generated when the upper and lower molds close, reduce rigid collisions between molds, and extend the service life of the equipment.

[0014] Preferably, a feed distribution rod is connected to the inner wall of the feed inlet.

[0015] By adopting the above technical solution, the material distribution rod can effectively disperse the molten material entering the feed inlet, ensuring that the molten material is evenly distributed throughout the forming cavity, thereby improving the quality and consistency of the casting.

[0016] Preferably, the melting chamber is connected to a discharge section on the side near the lower mold, and there are several discharge ports, with the number of inlets being the same as the number of discharge ports and corresponding one-to-one.

[0017] By adopting the above technical solution, the design of multiple discharge ports corresponding to one-to-one discharge ports allows the molten coated sand to quickly enter the molding cavity, facilitating the rapid arrival of the molten coated sand at various points in the molding cavity, thereby improving the quality of castings and production efficiency.

[0018] Preferably, a sealing block is connected to the side of the discharge section near the lower mold, the number of sealing blocks is the same as the number of discharge ports and corresponds one-to-one, and the end of the sealing block away from the discharge section abuts against the outer wall of the lower mold.

[0019] By adopting the above technical solution, the sealing block is set on the side of the discharge section near the lower mold, and each discharge port corresponds to a sealing block, which can effectively prevent leakage of molten material during the process of entering the molding cavity, thereby improving the safety and reliability of the equipment.

[0020] Preferably, the injection molding mechanism further includes a first drive assembly, the melt chamber is slidably connected to the frame, the first drive assembly is connected to the frame, and the first drive assembly is used to drive the melt chamber to slide.

[0021] By adopting the above technical solution, the first driving component can make the melting chamber slide relative to the lower mold, which facilitates the separation and closing of the mold, keeping the melting chamber away from the upper and lower molds, reducing the possibility of the upper mold colliding with the melting chamber during movement, and improving the safety and reliability of the equipment.

[0022] Preferably, the injection molding mechanism further includes a switching assembly connected to the melting chamber, which is used to switch the feed pipe on and off from the melting chamber.

[0023] By adopting the above technical solution, the switching component is connected to the melting chamber, which can realize the on / off control between the feeding pipe and the melting chamber. This allows the feeding pipe to be shut off when needed, preventing coated sand from entering the melting chamber when not needed, avoiding material waste and equipment contamination, and improving production efficiency and product quality.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. The operator stores the coated sand in the sand discharge chamber. The coated sand enters the melting chamber through the feeding pipe. The melting chamber heats the coated sand to a molten state. The first drive cylinder drives the upper mold to slide and close with the lower mold. The molten coated sand in the melting chamber enters the molding cavity through the discharge port and the feed port, realizing automatic casting of the molding mold, reducing the operator's operation time for casting the molding mold, and improving the production efficiency of the equipment.

[0026] 2. It has multiple molding cavities, and the number of injection molding mechanisms and molding cavities are the same and correspond one-to-one, which facilitates the molding of multiple products at one time and improves the production efficiency of the equipment;

[0027] 3. The elastic buffer bar can effectively absorb the impact force generated when the upper and lower dies close, reduce rigid collisions between dies, and extend the service life of the equipment. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the pump body casting device.

[0029] Figure 2 This is a structural schematic diagram of the pump body casting device from another perspective.

[0030] Figure 3 yes Figure 1 Enlarged view of point A in the middle.

[0031] Figure 4 yes Figure 2 Enlarged view of point B in the middle.

[0032] Figure 5 This is a partial sectional view of the pump body casting device.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Frame; 11. Base; 12. Column; 13. Sand discharge chamber; 131. Material storage chamber; 132. Feed port; 133. Connection hole; 14. Guide column; 15. Top plate; 16. Cover plate;

[0035] 2. Molding mechanism; 21. Upper mold; 211. Positioning groove; 212. Upper insert groove; 213. Groove; 214. Upper mounting groove; 22. Lower mold; 221. Positioning pin; 2211. Chamfer; 222. Lower insert groove; 223. Protrusion; 224. Lower mounting groove; 23. Lower mounting base; 24. Sliding plate; 241. Guide hole; 25. Upper mounting base; 26. Feed port; 27. Elastic buffer rod; 28. Material distribution rod; 29. ​​Molding groove;

[0036] 3. First drive cylinder;

[0037] 4. Injection molding mechanism; 41. Melting chamber; 411. Discharge section; 4111. Discharge port; 412. Temporary storage chamber; 413. Feeding channel; 414. Discharge channel; 42. Feeding pipe; 43. Sealing block; 44. First drive assembly; 441. Drive motor; 442. Lead screw; 45. Switch assembly; 451. Second drive cylinder; 452. Sealing block; 46. Fixed seat; 47. Sliding seat. Detailed Implementation

[0038] The present application will be further described in detail below with reference to the accompanying drawings.

[0039] Reference Figure 1 This application discloses a pump body casting device including a frame 1, which includes a base 11, columns 12, and a sand discharge chamber 13. The columns 12 are vertical in their length direction, and their lower ends are fixedly connected to the upper end of the base 11. Several columns 12 are provided, spaced apart circumferentially along the base 11. In this embodiment, four columns 12 are provided, distributed at the four corners of the base 11, and the sand discharge chamber 13 is fixedly connected to the upper end of the columns 12.

[0040] Reference Figure 1 and Figure 2A pump body casting device further includes a forming mechanism 2 and a first drive cylinder 3. The forming mechanism 2 includes a lower mounting base 23, a lower mold 22, a sliding plate 24, an upper mounting base 25, and an upper mold 21. The lower mounting base 23 is fixedly connected to the upper end of the base 11, and the lower mold 22 is fixedly connected to the side of the lower mounting base 23 away from the base 11. The frame 1 also includes guide columns 14 and a top plate 15. The length direction of the guide columns 14 is vertical, and the lower end of the guide columns 14 is fixedly connected to the upper end of the base 11. The top plate 15 is fixedly connected to the upper end of the guide columns 14. There are several guide columns 14, which are distributed circumferentially around the lower mounting base 23. In this embodiment, there are four guide columns 14, which are distributed at the four corners of the lower mounting base 23. The sliding plate 24 is slidably connected to the guide columns 14, and the sliding direction of the sliding plate 24 is parallel to the length direction of the guide columns 14. The sliding plate 24 is provided with guide holes 241, the number of which is the same as the number of guide posts 14 and corresponds one-to-one. The four guide holes 241 are located at the four corners of the sliding plate 24. The guide posts 14 are coaxially slidably embedded in the guide holes 241, and the outer wall of the guide post 14 is in contact with the hole wall of the guide hole 241. The first drive cylinder 3 is connected to the sliding plate 24 and is used to drive the sliding plate 24 to slide. In this embodiment, the first drive cylinder 3 is a cylinder. The cylinder body of the first drive cylinder 3 is fixedly connected to the side of the sliding plate 24 away from the base 11, and the piston rod of the first drive cylinder 3 is fixedly connected to the side surface of the top plate 15 near the lower mounting seat 23. The upper mounting seat 25 is fixedly connected to the side surface of the sliding plate 24 near the base 11, and the upper mold 21 is fixedly connected to the end of the upper mounting seat 25 away from the sliding plate 24.

[0041] Reference Figure 2 and Figure 3The upper mold 21 has molding grooves 29 on its surface near the lower mold 22, and the lower mold 22 has molding grooves 29 on its surface near the upper mold 21. When the upper mold 21 and the lower mold 22 are closed, the two molding grooves 29 form molding cavities. Several molding cavities are provided, and these cavities are spaced apart circumferentially along the lower mold 22. In this embodiment, two molding cavities are provided, and the two molding cavities are symmetrically distributed around the vertical direction. The molding cavity wall is provided with several inlet ports 26, which are connected to the outside. The lower mold 22 has lower grooves 222 on both sides of its surface along the length of the base 11, near the upper mold 21. The upper mold 21 has upper grooves 212 on both sides of its surface along the length of the base 11, near the lower mold 22. The bottom of the upper grooves 212 is flush with the bottom of the lower grooves 222. The end of each inlet port 26 away from the molding groove 29 is located at the bottom of the upper grooves 212 and lower grooves 222. The inlets 26 are spaced apart along the width of the base 11. In this embodiment, one molding cavity has three inlets 26. A material distribution rod 28 is fixedly connected to the bottom of the molding groove 29 of the lower mold 22. The material distribution rod 28 is located inside the inlet ports 26, and its axis is parallel to the axis of the guide post 14. In this embodiment, one molding cavity has two material distribution rods 28, which are symmetrically distributed along the width of the base 11.

[0042] Reference Figure 3 and Figure 4 A protrusion 223 is fixedly connected to the side of the lower mold 22 away from the feed port 26. The number of protrusions 223 is the same as the number of molding cavities and they correspond one-to-one. A groove 213 is provided on the side of the upper mold 21 away from the feed port 26. The number of grooves 213 is the same as the number of protrusions 223 and they correspond one-to-one. The groove 213 is used for the protrusions 223 to be embedded in, and the groove wall of the groove 213 fits against the side wall of the protrusion 223. A positioning post 221 is fixedly connected to the end of the protrusion 223 away from the base 11. The axis of the positioning post 221 is parallel to the axis of the guide post 14. There are several positioning posts 221, which are spaced apart along the length of the base 11. In this embodiment, one protrusion 223 has two positioning posts 221. A positioning groove 211 is provided at the bottom of the groove 213. The number of positioning grooves 211 is the same as the number of positioning posts 221 and they correspond one-to-one. The positioning groove 211 is used for the positioning posts 221 to be embedded in. The outer periphery of the positioning post 221 away from the base 11 is provided with a chamfer 2211, which is used to abut against the groove wall of the positioning groove 211.

[0043] The molding mechanism 2 also includes elastic buffer rods 27. Several elastic buffer rods 27 are provided, and these rods are connected to the upper mold 21 and the lower mold 22. In this embodiment, six elastic buffer rods 27 are provided, with two rods connected to the upper mold 21. The bottom of the groove 213 has an upper mounting groove 214, located on the side of the positioning post 221 away from the other molding cavity. One end of each of the two elastic buffer rods 27 is embedded in one of the two upper mounting grooves 214, and the other end of each elastic buffer rod 27 abuts against the end of the protrusion 223 away from the base 11. Four elastic buffer rods 27 are connected to the lower mold 22. The lower mold 22 has a lower mounting groove 224 on the side surface away from the base 11. The number of lower mounting grooves 224 is the same as the number of elastic buffer rods 27 connected to the lower mold 22 and they correspond one-to-one. The four lower mounting grooves 224 are divided into two groups. The two groups of lower mounting grooves 224 correspond to two molding cavities respectively. The two lower mounting grooves 224 in the same group are located on the side of the molding cavity away from the other molding cavity. The two lower mounting grooves 224 in the same group are distributed at intervals along the circumference of the molding cavity. One end of the elastic buffer rod 27 is embedded in the upper mounting groove 214, and the other end of the elastic buffer rod 27 is used to abut against the side surface of the upper mold 21 near the base 11.

[0044] Reference Figure 1 and Figure 3 A pump body casting device further includes injection molding mechanisms 4, the number of which corresponds to the number of molding cavities. Each injection molding mechanism 4 includes a fixed base 46, a sliding base 47, and a first drive assembly 44. The fixed base 46 is fixedly connected to the upper end of the base 11, and the sliding base 47 is slidably connected to the side of the fixed base 46 away from the base 11, with the sliding direction of the sliding base 47 parallel to the length direction of the base 11. The first drive assembly 44 includes a drive motor 441 and a lead screw 442. The lead screw 442 is rotatably connected to the fixed base 46, and its rotation axis is parallel to the sliding direction of the sliding base 47. The lead screw 442 is threadedly connected to the sliding base 47. The drive motor 441 is connected to the fixed base 46 and is used to drive the lead screw 442 to rotate. In this embodiment, the housing of the drive motor 441 is fixedly connected to the side of the fixed base 46 away from the lower mold 22, and the output shaft of the drive motor 441 is coaxially fixedly connected to the end of the lead screw 442 away from the lower mold 22.

[0045] Reference Figure 3 and Figure 5The injection molding mechanism 4 also includes a melting chamber 41, a feeding pipe 42, and a switching assembly 45. The melting chamber 41 is fixedly connected to the sliding seat 47 on the side away from the base 11. The melting chamber 41 is used to heat and melt the coated sand into a molten state. The melting chamber 41 has a temporary storage cavity 412 for storing the coated sand. A feeding channel 413 is provided at the upper end of the melting chamber 41, which communicates with the temporary storage cavity 412. One end of the feeding pipe 42 is fixedly connected to the upper end of the melting chamber 41, and the feeding pipe 42 communicates with the feeding channel 413. The other end of the feeding pipe 42 is fixedly connected to the lower end of the sand discharge chamber 13. The sand discharge chamber 13 has a storage cavity 131 for storing the coated sand. A feeding port 132 is provided on the side wall of the storage cavity 131 away from the base 11, and the feeding port 132 communicates with the outside. The frame 1 also includes a cover plate 16, one end of which is rotatably connected to the sand discharge chamber 13 and covers the feeding port 132. The rotation axis of the cover plate 16 is parallel to the width direction of the base 11. A connecting hole 133 is provided on the side wall of the storage chamber 131 near the base 11. The number of connecting holes 133 is the same as the number of feeding pipes 42 and they correspond one-to-one. The connecting holes 133 are connected to the feeding pipes 42. The switching assembly 45 includes a second drive cylinder 451 and a sealing block 452. The sealing block 452 is slidably embedded in the feeding channel 413 to open and close the feeding channel 413. The sliding direction of the sealing block 452 is vertical. The second drive cylinder 451 is connected to the melting chamber 41 and is used to drive the sealing block 452 to slide. In this embodiment, the second drive cylinder 451 is a pneumatic cylinder. The cylinder body of the second drive cylinder 451 is fixedly connected to the upper end of the melting chamber 41, and the piston rod of the second drive cylinder 451 is fixedly connected to one end of the sealing block 452.

[0046] The injection molding mechanism 4 also includes a sealing block 43. A discharge section 411 is fixedly connected to the side of the melt chamber 41 near the lower mold 22. The end of the discharge section 411 away from the melt chamber 41 is used to embed into the upper groove 212 and the lower groove 222. The discharge section 411 has a discharge channel 414, which communicates with the temporary storage chamber 412. An discharge port 4111 is provided at the end of the discharge section 411 near the lower mold 22, and the discharge port 4111 communicates with the discharge channel 414. The sealing block 43 is fixedly connected to the end of the discharge section 411 near the lower mold 22. The end of the sealing block 43 away from the discharge section 411 is used to abut against the bottom of the upper groove 212 and the lower groove 222. The number of discharge ports 4111 and sealing blocks 43 is the same as the number of feed ports 26 and corresponds one-to-one. The discharge ports 4111 are used to communicate with the feed ports 26.

[0047] The implementation principle of the pump body casting device in this application embodiment is as follows: The piston rod of the first drive cylinder 3 extends, pushing the sliding plate 24 to slide, which in turn drives the upper mounting base 25 to slide, causing the upper mold 21 to slide closer to the lower mold 22. The chamfer 2211 abuts against the groove wall of the positioning groove 211, so that the positioning pin 221 is embedded in the positioning groove 211. The elastic buffer rod 27 abuts against the upper mold 21 and the lower mold 22 respectively, playing a buffering role for the upper mold 21 and the lower mold 22. The upper mold 21 and the lower mold 22 close, and the forming groove 29 of the upper mold 21 and the lower mold 22 form a forming cavity.

[0048] The piston rod of the second drive cylinder 451 extends, causing the sealing block to move downward, thus connecting the feeding pipe 42 with the temporary storage chamber 412. The coated sand in the storage chamber 131 enters the temporary storage chamber 412. The piston rod of the second drive cylinder 451 retracts, causing the sealing block 452 to close the feeding channel 413. The coated sand is heated to a molten state in the melting chamber 41. The drive motor 441 works, driving the lead screw 442 to rotate, causing the sliding seat 47 to slide, and causing the melting chamber 41 to slide closer to the lower mold 22. The discharge part 411 is embedded in the upper groove 212 and the lower groove 222, and the sealing block 43 abuts against the bottom of the upper groove 212 and the lower groove 222. The discharge port 4111 is connected to the feed port 26, sending the molten coated sand into the molding cavity for molding.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pump body casting device, characterized in that: The system includes a frame (1), a molding mechanism (2), a first drive cylinder (3), and an injection molding mechanism (4). The molding mechanism (2) includes an upper mold (21) and a lower mold (22). The lower mold (22) is connected to the frame (1). The upper mold (21) is slidably connected to the frame (1). The first drive cylinder (3) is connected to the frame (1). The first drive cylinder (3) is used to drive the upper mold (21) to slide. The upper mold (21) and the lower mold (22) cooperate to form a molding cavity. A feed port (26) is provided on the wall of the molding cavity. It is connected to the outside world; the injection molding mechanism (4) includes a melting chamber (41) and a feeding pipe (42); the melting chamber (41) is connected to the frame (1); the melting chamber (41) is used to heat and melt the coated sand into a molten state; the melting chamber (41) is provided with a discharge port (4111); the discharge port (4111) is connected to the feed port (26); the frame (1) is connected to a sand discharge chamber (13); one end of the feeding pipe (42) is connected to the sand discharge chamber (13); the other end of the feeding pipe (42) is connected to the melting chamber (41).

2. The pump body casting device according to claim 1, characterized in that: The molding cavity is provided with a plurality of such cavities; the plurality of such cavities are distributed at intervals along the circumference of the lower mold (22); the number of the injection molding mechanism (4) is the same as the number of the molding cavity and corresponds one-to-one.

3. The pump body casting device according to claim 1, characterized in that: The lower mold (22) is connected to a positioning post (221) on the side near the upper mold (21); the upper mold (21) is provided with a positioning groove (211) on the side near the lower mold (22); the positioning post (221) is used to be embedded in the positioning groove (211).

4. The pump body casting device according to claim 1, characterized in that: The forming mechanism (2) further includes an elastic buffer rod (27); there are several elastic buffer rods (27); several elastic buffer rods (27) are respectively connected to the upper mold (21) and the lower mold (22); the elastic buffer rods (27) are used to abut against the lower mold (22) or the upper mold (21).

5. The pump body casting device according to claim 1, characterized in that: A feed bar (28) is connected to the inner wall of the feed inlet (26).

6. The pump body casting device according to claim 1, characterized in that: The melting chamber (41) is connected to the discharge section (411) on the side near the lower mold (22); there are several discharge ports (4111); the number of feed ports (26) is the same as the number of discharge ports (4111) and they correspond one-to-one.

7. The pump body casting device according to claim 6, characterized in that: The discharge section (411) is connected to a sealing block (43) on the side near the lower mold (22); the number of sealing blocks (43) is the same as the number of discharge ports (4111) and they correspond one-to-one; the end of the sealing block (43) away from the discharge section (411) abuts against the outer wall of the lower mold (22).

8. The pump body casting device according to claim 1, characterized in that: The injection molding mechanism (4) further includes a first drive assembly (44); the melt chamber (41) is slidably connected to the frame (1); the first drive assembly (44) is connected to the frame (1); the first drive assembly (44) is used to drive the melt chamber (41) to slide.

9. The pump body casting device according to claim 1, characterized in that: The injection molding mechanism (4) also includes a switch assembly (45); the switch assembly (45) is connected to the melting chamber (41); the switch assembly (45) is used to switch the feed pipe (42) and the melting chamber (41) on and off.

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