Sand core mold for casting pump body

Abstract

The utility model relates to the technical field of casting, and discloses a sand core mold for casting a pump body, which comprises a box body, an upper mold plate is arranged in the box body, a main core is fixedly connected to the upper surface of the upper mold plate, a lower mold plate is arranged on the lower surface of the upper mold plate, and an auxiliary core is fixedly connected to the upper surface of the lower mold plate. A connecting assembly is arranged on the upper surface of the lower mold plate, a cold iron plate is slidably connected to the outer wall of the lower mold plate, a cooling pipe is arranged on the outer wall of the cold iron plate, a water inlet pipe is fixedly connected to one end of the cooling pipe, a water outlet pipe is fixedly connected to the other end of the cooling pipe, and a cooling fan is fixedly connected to the interior of the box body. According to the sand core mold, cooling liquid is circulated through the cooling pipe, meanwhile, circulation of gas in the flowing groove is accelerated through the cooling fan, so that the pump body is cooled, meanwhile, the fixing plate slides on the threaded rod to drive the mold to ascend, the effect of ejecting out the mold is achieved, the practicability of the sand core mold is improved, and the casting efficiency of the pump body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, in particular to a sand core mould for pump body casting. Background Art

[0002] Sand core casting refers to a casting method that produces castings in sand molds. Steel, iron and most non-ferrous alloy castings can be obtained by sand core casting. Since the molding materials used in sand core casting are cheap and easy to obtain, the casting core is easy to manufacture, and it can adapt to the single-piece production, batch production and mass production of castings, it has long been the basic process in casting production.

[0003] A Chinese patent document with the search announcement number CN216938310U discloses a pump casing casting mold, including an upper mold plate, a lower mold plate and a sand core. The sand core includes a main core and an auxiliary core. The main core is the pump casing part, and the auxiliary core is the flange part of the pump casing. The auxiliary core is annular, and one end face of the auxiliary core is provided with a plurality of cylindrical bosses. The auxiliary core is sleeved on the main core through a hole in the center. The utility model designs the sand core used for casting the pump casing into a split type. The auxiliary core is for the casting of the flange, and the flange surface and through hole of the pump casing are changed from mechanical processing to casting production, which reduces the circulation of castings, cancels the mechanical processing of the flange surface and through hole, and reduces the cost. However, after the pump body is cast, the scheme cannot quickly cool the mold, and the mold cannot be ejected, which makes it inconvenient to quickly demold the pump body, thereby reducing the casting efficiency of the pump body. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a sand core mold for pump body casting, aiming to improve the problem that most of the existing sand core molds cannot quickly cool the mold and cannot be ejected after the pump body is cast.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a sand core mold for pump body casting, comprising a box body, an upper template is arranged inside the box body, the upper surface of the upper template is fixedly connected to the main core, the lower surface of the upper template is arranged, the upper surface of the lower template is fixedly connected to the auxiliary core, the upper surface of the lower template is arranged, the upper surface of the lower template is fixedly connected to the auxiliary core, and the upper surface of the lower template is arranged. A connecting assembly is arranged, the outer wall of the lower template is slidably connected to a cold iron plate, the outer wall of the cold iron plate is provided with a cooling pipe, one end of the cooling pipe is fixedly connected to a water inlet pipe, and the other end of the cooling pipe is fixedly connected to a water outlet pipe, a cooling fan is fixedly connected to the inside of the box body, a flow groove is opened inside the box body, a rotating rod is rotatably connected to the inside of the box body, one end of the rotating rod is fixedly connected to a worm, and the other end of the rotating rod is fixedly connected to a crank, a worm gear is rotatably connected to the inside of the box body, the worm gear is meshed with the worm gear, a threaded rod is fixedly connected to the inside of the worm gear, the outer wall of the threaded rod is threadedly connected to a fixing plate, and the outer wall of the fixing plate is fixedly connected to the outer wall of the cold iron plate.

[0006] Furthermore, the connecting assembly includes a positioning rod, an outer wall of the positioning rod is fixedly connected to the upper surface of the lower template, and the outer wall of the positioning rod is slidably connected to the inside of the upper template.

[0007] Furthermore, a support rod is rotatably connected to the upper surface of the box body, and a support plate is fixedly connected to the top of the outer wall of the support rod.

[0008] Furthermore, a push rod is slidably connected inside the support plate, and a top plate is fixedly connected to the bottom of the outer wall of the push rod.

[0009] Furthermore, a left-right symmetrical connecting seat is fixedly connected to the upper surface of the top plate, and a connecting frame is rotatably connected inside the connecting seat.

[0010] Furthermore, gears are rotatably connected inside the connecting frame, and the gears on the left and right sides are meshed with each other.

[0011] Furthermore, a pull rod is slidably connected inside the support plate, a clamping block is fixedly connected to one end of the pull rod, and an outer wall of the clamping block is slidably connected inside the push rod.

[0012] Furthermore, a spring is sleeved on the outer wall of the pull rod, one end of the spring is fixedly connected to the inside of the support plate, and the other end of the spring is fixedly connected to the outer wall of the clamping block.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, firstly, the cooling liquid is circulated through the cooling pipe, and at the same time, the heat dissipation fan accelerates the circulation of the gas inside the flow groove, so as to realize the cooling of the pump body and prevent the shrinkage cavity of the pump body caused by uneven temperature. At the same time, the fixed plate slides on the threaded rod to drive the mold to rise, so as to achieve the effect of ejecting the mold, which solves the problem that most of the existing sand core molds cannot quickly cool the mold and cannot eject the mold after the pump body is cast, improves the practicability of the sand core mold, and accelerates the casting efficiency of the pump body.

[0015] 2. In the utility model, the push rod is pressed to drive the top plate to press and fix the mold, and the push rod is inserted inside the push rod to fix the push rod, so as to achieve the effect of firmly fixing the position of the mold. At the same time, the support rod rotates on the box body, which can also facilitate the ejection of the mold. It solves the problem that most of the existing sand core molds are only connected and fixed by a single positioning rod, which easily causes the mold to separate when casting high-temperature molten iron. It improves the stability of the sand core mold and ensures the safe casting of the pump body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a sand core mold for pump body casting proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the cold iron plate portion of a sand core mold for pump body casting proposed by the utility model;

[0018] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0019] Figure 4 The utility model discloses a cross-sectional view of the internal structure of a support plate of a sand core mold for pump body casting.

[0020] Legend:

[0021] 1. Box body; 2. Upper template; 3. Main core; 4. Lower template; 5. Auxiliary core; 6. Positioning rod; 7. Cold iron plate; 8. Cooling pipe; 9. Water inlet pipe; 10. Water outlet pipe; 11. Cooling fan; 12. Flow trough; 13. Turning rod; 14. Worm; 15. Crank; 16. Worm gear; 17. Threaded rod; 18. Fixed plate; 19. Block; 20. Support rod; 21. Support plate; 22. Push rod; 23. Top plate; 24. Connecting seat; 25. Connecting frame; 26. Gear; 27. Pull rod; 28. Spring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Reference Figure 1-3 The utility model provides an embodiment: a sand core mold for pump body casting, including a box body 1, an upper template 2 is arranged inside the box body 1, a main core 3 is fixedly connected to the upper surface of the upper template 2, a lower template 4 is arranged on the lower surface of the upper template 2, an auxiliary core 5 is fixedly connected to the upper surface of the lower template 4, a connecting component is arranged on the upper surface of the lower template 4, a cold iron plate 7 is slidably connected to the outer wall of the lower template 4, a cooling pipe 8 is arranged on the outer wall of the cold iron plate 7, one end of the cooling pipe 8 is fixedly connected to the water inlet pipe 9, and the other end of the cooling pipe 8 is fixedly connected to The water outlet pipe 10, a cooling fan 11 is fixedly connected inside the box 1, a flow groove 12 is opened inside the box 1, a rotating rod 13 is rotatably connected inside the box 1, a worm 14 is fixedly connected to one end of the rotating rod 13, and a crank 15 is fixedly connected to the other end of the rotating rod 13, a worm gear 16 is rotatably connected inside the box 1, the worm 14 is meshed with the worm gear 16, a threaded rod 17 is fixedly connected inside the worm gear 16, and a fixing plate 18 is threadedly connected to the outer wall of the threaded rod 17, and the outer wall of the fixing plate 18 is fixedly connected to the outer wall of the cold iron plate 7;

[0024] Specifically, when sufficient heat dissipation and rapid demoulding are required, a heat dissipation fan 11 is provided in the box body 1, which blows air into the flow groove 12 to quickly drive the gas flow around the outer wall of the cold iron plate 7, thereby preliminarily achieving heat dissipation and cooling of the lower template 4 and the upper template 2. At the same time, coolant is added to the cooling pipe 8 through the water inlet pipe 9, so that the coolant surrounds the cold iron plate 7, and then discharged and replaced through the water outlet pipe 10 to effectively achieve cooling of the pump body. This can effectively prevent the shrinkage cavity phenomenon caused by uneven temperature of the pump body. By rotating the crank 15, the rotating rod 13 is innovatively driven to drive the rotation of the worm 14 and the worm wheel 16, and the threaded rod 17 is fixed inside. This design allows the fixed plate 18 to slide on the outer wall of the threaded rod 17, thereby lifting and lowering the cold iron plate 7 and the upper template 2 and the lower template 4 inside the cold iron plate 7. This lifting process achieves the ejection effect of the mold, greatly improving the practicality of the sand core mold. This not only simplifies the operation steps, but also more efficiently realizes the functions of heat dissipation, cooling and mold ejection. Overall, it can greatly speed up the efficiency of pump body casting and improve production benefits.

[0025] Reference Figure 2, the connecting assembly includes a positioning rod 6, the outer wall of the positioning rod 6 is fixedly connected to the upper surface of the lower template 4, and the outer wall of the positioning rod 6 is slidably connected to the inside of the upper template 2;

[0026] Specifically, the positioning rod 6 is fixed above the lower template 4 so that the lower template 4 can align the upper template 2 through the positioning rod 6, thereby achieving the effect of accurately connecting the upper template 2 and the lower template 4.

[0027] Reference Figure 1 and Figure 4 , the upper surface of the box body 1 is rotatably connected to a support rod 20, and the top of the outer wall of the support rod 20 is fixedly connected to a support plate 21; a push rod 22 is slidably connected inside the support plate 21, and the bottom of the outer wall of the push rod 22 is fixedly connected to a top plate 23; a left-right symmetrical connecting seat 24 is fixedly connected to the upper surface of the top plate 23, and a connecting frame 25 is rotatably connected inside the connecting seat 24; a gear 26 is rotatably connected inside the connecting frame 25, and the gears 26 on the left and right sides are meshed with each other; a pull rod 27 is slidably connected inside the support plate 21, and one end of the pull rod 27 is fixedly connected to a block 19, and the outer wall of the block 19 is slidably connected to the inside of the push rod 22; a spring 28 is sleeved on the outer wall of the pull rod 27, one end of the spring 28 is fixedly connected to the inside of the support plate 21, and the other end of the spring 28 is fixedly connected to the outer wall of the block 19;

[0028] Specifically, when the mold needs to be firmly fixed, the top plate 23 is accurately aligned with the top of the upper template 2 by rotating the support rod 20. Then, the push rod 22 is pressed so that the push rod 22 pushes the top plate 23 to move downward. At the same time, the rotation of the gear 26 inside the connecting frame 25 causes the connecting frame 25 to extend and assist the descent of the top plate 23. When the groove inside the push rod 22 slides to the outer wall of the block 19, the spring 28 pushes the block 19 due to its elastic force. This makes the block 19 firmly stuck inside the push rod 22, thereby reliably fixing the push rod 22 and the top plate 23. In this way, the firmness of the mold position can be ensured, thereby improving the stability of the sand core mold and providing safety protection for the pump body casting process. At the same time, by effectively combining the support rod 20, the push rod 22, the top plate 23 and the block 19 and other components, the mold position is quickly and reliably fixed. Overall, this not only improves the stability of the sand core mold, but also ensures the safe casting of the pump body.

[0029] Working principle: when the mold needs to be fully cooled and demoulded quickly, a cooling fan 11 is arranged inside the box body 1, so that the cooling fan 11 can blow air into the flow groove 12, thereby accelerating the flow of gas around the outer wall of the cold iron plate 7, thereby preliminarily cooling the lower template 4 and the upper template 2, and then adding coolant to the cooling pipe 8 through the water inlet pipe 9, so that the coolant can be surrounded by the cooling pipe 8 around the cold iron plate 7, and then discharged and replaced by the water outlet pipe 10, so as to achieve cooling of the pump body and prevent shrinkage holes caused by uneven temperature in the pump body, and then by turning the crank 15, the rotating rod 13 can drive the worm 14 to rotate, and then drive the worm wheel 16 to rotate, and then the threaded rod 17 is fixed inside the worm wheel 16, so that the fixed plate 18 can slide on the outer wall of the threaded rod 17, thereby cooling the cold iron plate 7 and The upper template 2 and the lower template 4 inside the cold iron plate 7 are raised and lowered, thereby achieving the effect of ejecting the mold, improving the practicability of the sand core mold, and accelerating the casting efficiency of the pump body. When the mold needs to be firmly fixed, the top plate 23 is aligned with the top of the upper template 2 by rotating the support rod 20, and then the push rod 22 is pressed, so that the push rod 22 can push the top plate 23 to move downward, and at the same time, the gear 26 rotates inside the connecting frame 25 to extend the connecting frame 25, thereby assisting the descent of the top plate 23. When the groove inside the push rod 22 slides to the outer wall of the block 19, the spring 28 can push the block 19 by elastic force, so that the block 19 is stuck in the push rod 22, and then the push rod 22 and the top plate 23 are fixed, thereby achieving the effect of firmly fixing the mold position, improving the stability of the sand core mold, and ensuring the safe casting of the pump body.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sand core mold for pump casting, comprising a box (1), characterized in that: An upper template (2) is arranged inside the box body (1), and a main core (3) is fixedly connected to the upper surface of the upper template (2), a lower template (4) is arranged on the lower surface of the upper template (2), an auxiliary core (5) is fixedly connected to the upper surface of the lower template (4), a connecting component is arranged on the upper surface of the lower template (4), a cold iron plate (7) is slidably connected to the outer wall of the lower template (4), a cooling pipe (8) is arranged on the outer wall of the cold iron plate (7), one end of the cooling pipe (8) is fixedly connected to a water inlet pipe (9), and the other end of the cooling pipe (8) is fixedly connected to a water outlet pipe (10), and a heat dissipation fan is fixedly connected inside the box body (1). The fan (11) is provided with a flow groove (12) inside the box body (1), a rotating rod (13) is rotatably connected inside the box body (1), a worm (14) is fixedly connected to one end of the rotating rod (13), and a crank (15) is fixedly connected to the other end of the rotating rod (13), a worm wheel (16) is rotatably connected inside the box body (1), the worm (14) is meshed with the worm wheel (16), a threaded rod (17) is fixedly connected inside the worm wheel (16), the outer wall of the threaded rod (17) is threadedly connected to a fixing plate (18), and the outer wall of the fixing plate (18) is fixedly connected to the outer wall of the cold iron plate (7).

2. A sand core mold for pump body casting according to claim 1, characterized in that: The connection assembly comprises a positioning rod (6), the outer wall of which is fixedly connected to the upper surface of the lower template (4), and the outer wall of which is slidably connected to the interior of the upper template (2).

3. The sand core mold for pump body casting according to claim 1, characterized in that: The upper surface of the box body (1) is rotatably connected to a support rod (20), and the top of the outer wall of the support rod (20) is fixedly connected to a support plate (21).

4. A sand core mold for pump body casting according to claim 3, characterized in that: A push rod (22) is slidably connected inside the support plate (21), and a top plate (23) is fixedly connected to the bottom of the outer wall of the push rod (22).

5. The sand core mold for pump body casting according to claim 4, characterized in that: A left-right symmetrical connecting seat (24) is fixedly connected to the upper surface of the top plate (23), and a connecting frame (25) is rotatably connected inside the connecting seat (24).

6. The sand core mold for pump body casting according to claim 5, characterized in that: The connecting frame (25) is internally rotatably connected with a gear (26), and the gears (26) on the left and right sides are meshed with each other.

7. The sand core mold for pump body casting according to claim 6, characterized in that: A pull rod (27) is slidably connected inside the support plate (21), one end of the pull rod (27) is fixedly connected to a clamping block (19), and the outer wall of the clamping block (19) is slidably connected inside the push rod (22).

8. The sand core mold for pump body casting according to claim 7, characterized in that: A spring (28) is sleeved on the outer wall of the pull rod (27), one end of the spring (28) is fixedly connected to the inside of the support plate (21), and the other end of the spring (28) is fixedly connected to the outer wall of the clamping block (19).

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