A water pump housing casting equipment

Abstract

The invention belongs to the technical field of casting equipment, and specifically is a water pump casing casting equipment, comprising: a workbench; a base, fixedly connected to one end of the top of the workbench; a heat preservation box, fixedly connected to the top of the base; through the cooperation of a through-hole plate and a through-hole cover, by turning on a second motor; the second motor drives the gear to rotate, the gear drives the gear ring to rotate, the gear ring drives the through-hole cover to rotate, the second through hole on the through-hole cover is connected with the first through hole on the through-hole plate during the rotation process, and molten iron can flow down, wherein the larger the connection area, the faster the flow rate, the larger the flow rate, the smaller the connection area, the slower the flow rate, and the smaller the flow rate; the circumference of the gear ring is four times that of the gear, then when the gear rotates half a circle, the gear ring rotates 22.5 degrees, the second through hole can completely cross a first through hole, the second motor is controlled according to a computer program, the angle of the second motor driving the first gear to rotate is ensured, the connection area between the first through hole and the second through hole is determined, and the function of adjusting the flow rate of molten iron is realized.

Description

Technical Field

[0001] The invention belongs to the technical field of casting equipment, in particular to a water pump casing casting equipment. Background Art

[0002] A water pump is a machine for conveying liquid or pressurizing liquid. The water pump consists of two parts: the shell and internal components. The water pump shell casting refers to obtaining the metal structure of the water pump by casting, and then assembling the metal structure into a water pump. The smelted liquid metal is poured into the pre-prepared casting by pouring, injection, etc., cooled for a period of time to obtain the water pump shell casting, and finally polished to obtain the casting.

[0003] A Chinese patent with publication number CN116900282A discloses a water pump housing casting device, comprising an outer circular tube, a top circular ring is fixedly connected to the inside of the top of the outer circular tube, a bottom supporting ring is fixedly connected to the bottom of the outer circular tube, a bottom fixing ring is fixedly connected to the middle of the bottom supporting ring, and a top sliding ring is movably connected to the top of the bottom fixing ring; when casting the water pump housing, during the grouting process, molten iron is poured from the middle of the limiting tube into the interior of the water pump housing casting device. During the pouring process, since the middle of the inner fixing tube is in the magnetic field, during the grouting, the molten iron is held in the magnetic field. The device will change the magnetic field, change the rotation of the inner fixed tube, and accelerate the rotation of the inner fixed tube. After the molten iron is poured, the slurry pouring device leaves the inner fixed tube, causing the inner fixed tube to slowly decelerate after rotating for a period of time. By utilizing the energy changes of the magnetic field and electric field, the use of external energy is reduced, and an automated rotation process is formed during the casting process. There is no need to set a switch, and the grouting process forms a switch quota process. It is simple and convenient to use, and the rotation speed can be adjusted by the up and down speed of the grouting device. It is safe and convenient to use, and can be used by one person to improve efficiency.

[0004] In the above technology, the rotation speed is adjusted by up and down speeds during grouting to promote liquid flow. Due to the different thicknesses of the water pump casing, in addition to the need to limit the thickness during cutting and grinding, the sand core in the mold is usually replaced. The larger the sand core size and the smaller the gap with the mold, the greater the thickness of the water pump casing; conversely, the smaller the sand core size and the larger the gap with the mold, the smaller the thickness of the water pump casing; during grouting, the flow rate of the molten iron is fixed. When the gap between the mold and the sand core is small, it is easy to cause blockage at the injection port, causing the molten iron to overflow or flow back, which not only wastes raw materials but also reduces casting efficiency.

[0005] To this end, the present invention provides a water pump housing casting device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a water pump housing casting device described in the present invention comprises:

[0008] Workbench;

[0009] A base, fixed to one end of the top of the workbench;

[0010] An insulation box is fixedly connected to the top of the base;

[0011] The upper die and the lower die are located in the middle above the workbench;

[0012] A flow rate control unit is arranged at the bottom of the incubator;

[0013] The flow rate control unit comprises a through-hole plate fixedly connected to the bottom of the heat preservation box; the bottom outer wall of the heat preservation box is rotatably connected to a through-hole cover through a bearing; the bottom inner wall of the through-hole cover is in close contact with the bottom of the through-hole plate; the outer wall of the through-hole cover is fixedly connected to a gear ring; the bottom outer wall of the heat preservation box is fixedly connected to a fixed plate; the top of the fixed plate is fixedly connected to a second motor; the output shaft of the second motor is rotatably connected to the fixed plate through a bearing, and extends to the bottom of the fixed plate and is fixedly connected to a gear; the gear is meshed with the gear ring; a plurality of first through holes are provided on the through-hole plate, and a plurality of second through holes are provided on the through-hole cover, and the first through holes are respectively matched with the second through holes;

[0014] The bottom of the through hole cover is connected and fixedly connected with an adapter, and the bottom of the adapter is connected and fixedly connected with an infusion tube; one end of the infusion tube away from the adapter passes through the lower mold and is connected and fixedly connected to the injection port of the lower mold.

[0015] Preferably, the top of the thermal insulation box is connected and fixedly connected with a liquid inlet pipe, and a control valve is installed on the liquid inlet pipe; a filter cartridge is connected to the top inner wall of the thermal insulation box by bolts, and the filter cartridge is arranged directly below the liquid inlet pipe; two springs are fixedly connected to the bottom inner wall of the filter cartridge; a lifting plate is fixedly connected to the top of the two springs, and the edge of the lifting plate is in contact with the inner wall of the filter cartridge.

[0016] Preferably, the top of the workbench is fixedly connected to a fixed frame, and the fixed frame is arranged at the center of the workbench; the top of the fixed frame is fixedly connected to a hydraulic cylinder; the output end of the hydraulic cylinder passes through the fixed frame and is fixedly connected to a top plate; the four corners of the top plate are slidably connected to pillars; the two ends of the pillars are respectively fixed to the fixed frame and the workbench; the bottom of the top plate is fixedly connected to an upper mold; the top of the workbench is fixedly connected to a lower mold, and the lower mold cooperates with the upper mold; a molding piece is provided between the upper mold and the lower mold; a temperature sensor is fixedly connected to the side wall of the lower mold away from the thermal insulation box; the temperature sensor is electrically connected to the hydraulic cylinder.

[0017] Preferably, a third motor is fixedly connected to the top of the workbench; the output shaft of the third motor is fixedly connected to a rotating rod; the bottom end of the rotating rod away from the third motor is fixedly connected to a limiting column; the bottom of the limiting column is slidably connected to a movable plate through a limiting opening; connecting plates are symmetrically fixedly connected to the two ends of the movable plate; a vertical plate is fixedly connected to the top of the connecting plate; the vertical plates all slide on the workbench; impact blocks are fixedly connected to the side walls of the lower mold at the tops of the two vertical plates, and the impact blocks are made of rubber; the top of the impact block is higher than the top of the lower mold; the third motor is electrically connected to the temperature sensor.

[0018] Preferably, four L-shaped rods are fixedly connected to the bottom of the workbench, and the L-shaped rods are respectively arranged on both sides of two connecting plates; limiting grooves are respectively provided on both sides of the connecting plates; and the L-shaped rods slide in the limiting grooves respectively.

[0019] Preferably, two slide rails are symmetrically fixed to one end of the workbench away from the thermal insulation box; a mounting frame is fixed to the top of the two slide rails; an electric push rod is fixed to the top of the mounting frame; a cross plate is fixed to the output end of the electric push rod; the two ends of the cross plate are respectively slidably connected to the mounting frame; a clamping mechanism is provided on the top of the cross plate; the slide rails and the electric push rod are electrically connected to the temperature sensor respectively.

[0020] Preferably, two fixed blocks are symmetrically fixed to the bottom of the clamping mechanism; a bidirectional ball screw is rotatably connected between the fixed blocks via bearings; a driving motor is fixed to one side wall of the fixed block; the output shaft of the driving motor is fixed to one end of the bidirectional ball screw; two moving blocks are threadedly connected to the bidirectional ball screw; the two moving blocks are symmetrically arranged, and one side wall of the moving blocks close to the lower mold is fixed with an arc-shaped clamping plate; the inner wall of the arc-shaped clamping plate is provided with anti-slip grooves; the driving motor is electrically connected to the temperature sensor; two guide rods are fixed between the fixed blocks, and the moving blocks slide on the guide rods.

[0021] Preferably, a water stop valve, a flow meter, and a boost valve are sequentially provided at one end of the infusion tube close to the lower mold; and the flow meter is connected to the infusion tube via a flange.

[0022] Preferably, the bottom of the infusion tube is connected and fixedly connected to a drainage tube; a drainage valve is installed on the drainage tube; a circular opening is opened on the workbench, and the drainage valve is arranged in the circular opening; a recovery box is fixedly connected to the bottom of the workbench; the bottom end of the drainage tube is connected and fixedly connected to the recovery box.

[0023] Preferably, a first motor is fixedly connected to the top of the insulated box, and an output shaft of the first motor is rotatably connected to the insulated box via a bearing; a stirring rod is fixedly connected to the output shaft of the first motor, and a plurality of stirring paddles are fixedly connected to the outer side wall of the stirring rod.

[0024] The beneficial effects of the present invention are as follows:

[0025] 1. A water pump casing casting device described in the present invention, through the cooperation of the through-hole plate and the through-hole cover, when the thickness of the water pump casing is different, the flow rate of the molten iron needs to be adjusted, by turning on the second motor; the second motor drives the gear to rotate, the gear drives the gear ring to rotate, the gear ring drives the through-hole cover to rotate, and the second through hole on the through-hole cover is connected with the first through hole on the through-hole plate during the rotation process, and the molten iron can flow down, wherein the larger the connection area, the faster the flow rate, the larger the flow rate, the smaller the connection area, the slower the flow rate, and the smaller the flow rate; the circumference of the gear ring is four times that of the gear, then when the gear rotates half a circle, the gear ring rotates 22.5°, and the second through hole can completely cross a first through hole, so the second motor is controlled according to the computer program to ensure that the angle at which the second motor drives the first gear to rotate can determine the connection area between the first through hole and the second through hole, and the function of adjusting the flow rate of the molten iron can be realized; then the molten iron is flowed through the injection port to the gap between the upper mold and the lower mold and the sand core through the adapter and the infusion tube to form a molded part.

[0026] 2. The water pump casing casting equipment described in the present invention cooperates with a water stop valve, a flow meter and a boost valve. According to the different thicknesses of the molded parts, different amounts of molten iron are required. When the flow meter detects a predetermined flow, the water stop valve is driven to close, and the boost valve is opened to increase the pressure in the infusion tube to complete the transportation of the molten iron in the infusion tube, thereby reducing the amount of molten iron retained in the infusion tube, which leads to a lack of molten iron in the molded parts and the occurrence of problems such as molten iron cooling and clogging the infusion tube. After the injection is completed, molten iron is retained between the adapter and the water stop valve. In order to prevent the molten iron from cooling and clogging the infusion tube, the drainage valve needs to be opened to drain the molten iron into the recovery box through the drainage tube for easy recycling and reuse.

[0027] 3. A water pump casing casting device described in the present invention provides an impact block. In order to prevent the molded part from being in close contact with the upper mold and the lower mold, which is inconvenient to demold, before the upper mold is raised, it is necessary to control the third motor through a computer program, turn on the third motor, and drive the rotating rod to rotate through the third motor. The rotating rod drives the limiting column to rotate. The limiting column slides in the limiting mouth when rotating, and at the same time presses the limiting mouth, and pushes the movable plate to reciprocate through the limiting mouth, and drives the connecting plate to reciprocate through the movable plate. The connecting plate drives the vertical plate and the impact block to reciprocate. The impact block hits the side walls of the upper mold and the lower mold to generate vibration waves, so that the molded part is separated from the upper mold and the lower mold respectively, which is convenient for demolding; when injecting molten iron, it is still necessary to turn on the third motor to drive the impact block to impact, and accelerate the flow of molten iron through impact to prevent molten iron from being blocked at the injection port. At the same time, through impact, the bubbles in the molten iron are eliminated by vibration, thereby realizing the defoaming function. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Figure 1 is a first stereogram of the present invention;

[0030] Figure 2 is a second stereogram of the present invention;

[0031] Figure 3 It is a schematic structural diagram of a cross-section of the heat preservation box in the present invention;

[0032] Figure 4 It is a structural schematic diagram of the recycling box in the present invention;

[0033] Figure 5 It is a schematic diagram of the structure of the through-hole plate and the through-hole cover in the present invention;

[0034] Figure 6 It is a structural schematic diagram of the upper mold and the lower mold in the present invention;

[0035] Figure 7 It is a schematic diagram of the structure of the impact block in the present invention;

[0036] Figure 8 It is a structural schematic diagram of the arc-shaped splint in the present invention;

[0037] In the figure: 1, workbench; 11, circular mouth; 2, heat preservation box; 21, base; 22, first motor; 23, liquid inlet pipe; 24, control valve; 25, stirring rod; 251, stirring paddle; 26, filter cartridge; 27, spring; 28, lifting plate; 29, through-hole plate; 291, through-hole cover; 292, gear ring; 293, adapter; 294, infusion tube; 295, gear; 296, second motor; 297, fixed plate; 298, water stop valve; 299, flow meter; 210, boost valve; 211, recovery box; 212, drainage tube; 213, Drainage valve; 3. Fixed frame; 31. Hydraulic cylinder; 32. Top plate; 33. Pillar; 34. Upper mold; 35. Lower mold; 36. Molded part; 4. Vertical plate; 41. Connecting plate; 42. Moving plate; 43. Limiting opening; 44. Limiting column; 45. Rotating rod; 46. Third motor; 47. Impact block; 48. L-shaped rod; 49. Limiting groove; 5. Mounting frame; 51. Electric push rod; 52. Slide rail; 53. Horizontal plate; 54. Fixed block; 55. Bidirectional ball screw; 56. Guide rod; 57. Moving block; 58. Arc clamp; 59. Temperature sensor. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0039] like Figures 1 to 8As shown, a water pump casing casting device described in an embodiment of the present invention comprises: a workbench 1; a base 21, fixedly connected to one end of the top of the workbench 1; an insulation box 2, fixedly connected to the top of the base 21; an upper mold 34 and a lower mold 35, arranged in the middle above the workbench 1; a flow rate control unit, arranged at the bottom of the insulation box 2; the flow rate control unit comprises a through-hole plate 29 fixedly connected to the bottom of the insulation box 2; the bottom outer wall of the insulation box 2 is rotatably connected with a through-hole cover 291 through a bearing; the bottom inner wall of the through-hole cover 291 is in close contact with the bottom of the through-hole plate 29; the outer wall of the through-hole cover 291 is fixedly connected with a gear ring 292; the bottom outer wall of the insulation box 2 is fixedly connected with a fixing plate 297; A second motor 296 is fixedly connected to the top of the fixed plate 297; the output shaft of the second motor 296 is rotatably connected to the fixed plate 297 through a bearing, and extends to the bottom of the fixed plate 297 and is fixedly connected to a gear 295; the gear 295 is meshed with the gear ring 292; a plurality of first through holes are provided on the through-hole plate 29, and a plurality of second through holes are provided on the through-hole cover 291, and the first through holes are respectively matched with the second through holes; the bottom of the through-hole cover 291 is connected and fixedly connected to an adapter 293, and the bottom of the adapter 293 is connected and fixedly connected to an infusion tube 294; the end of the infusion tube 294 away from the adapter 293 passes through the lower mold 35, and is connected and fixedly connected to the injection port of the lower mold 35.

[0040] In the prior art, when the shell is being cast, due to the different thicknesses of the water pump shell, in addition to the need to limit the thickness during cutting and grinding, the sand core in the mold is usually replaced. The larger the sand core size, the smaller the gap between the sand core and the mold, and the greater the thickness of the water pump shell; conversely, the smaller the sand core size, the larger the gap between the sand core and the mold, and the smaller the thickness of the water pump shell; during grouting, the flow rate of the molten iron is fixed. When the gap between the mold and the sand core is small, it is easy to cause blockage at the injection port, thereby causing the molten iron to overflow or flow back, which not only wastes raw materials but also reduces casting efficiency;

[0041] When the flow rate control unit provided by the present invention is in use, when the thickness of the water pump housing is different, the flow rate of the molten iron needs to be adjusted, and the second motor 296 is turned on; the second motor 296 drives the gear 295 to rotate, the gear 295 drives the gear ring 292 to rotate, and the gear ring 292 drives the through-hole cover 291 to rotate, and the second through hole on the through-hole cover 291 is connected with the first through hole on the through-hole plate 29 during the rotation process, and the molten iron can flow down, wherein the larger the connection area, the faster the flow rate, the larger the flow rate, the smaller the connection area, the slower the flow rate, and the smaller the flow rate; the gear ring 29 2 is four times the circumference of gear 295. When gear 295 rotates half a circle, gear ring 292 rotates 22.5°, and the second through hole can completely cross one first through hole. Therefore, the second motor 296 is controlled according to the computer program to ensure that the second motor 296 drives the first gear 295 to rotate. The connecting area between the first through hole and the second through hole can be determined, and the function of adjusting the flow rate of molten iron can be realized; then the molten iron is flowed through the injection port to the gap between the upper mold 34 and the lower mold 35 and the sand core through the adapter 293 and the infusion tube 294 to form a molded part 36.

[0042] like Figure 1 and Figure 3 As shown, the top of the heat preservation box 2 is connected and fixedly connected with a liquid inlet pipe 23, and a control valve 24 is installed on the liquid inlet pipe 23; a filter cartridge 26 is connected to the inner wall of the top of the heat preservation box 2 by bolts, and the filter cartridge 26 is arranged directly below the liquid inlet pipe 23; two springs 27 are fixedly connected to the bottom inner wall of the filter cartridge 26; a lifting plate 28 is fixedly connected to the top of the two springs 27, and the edge of the lifting plate 28 is in contact with the inner wall of the filter cartridge 26.

[0043] The molten iron in the ladle is transported to the insulation box 2 through the liquid inlet pipe 23. The molten iron in the ladle contains iron slag. If it is not cleaned in time, the iron slag will be injected, the molten iron is impure, and the quality of the molded part 36 is poor. When the filter cartridge 26 provided by the present invention is in use, the molten iron flows into the filter cartridge 26 through the liquid inlet pipe 23, and is filtered by the filter cartridge 26 to filter the iron slag in the filter cartridge 26. When the molten iron flows in, the lifting plate 28 is pressed, and the lifting plate 28 moves downward by the spring 27. The molten iron inflow process may be interrupted several times. At this time, under the action of the spring 27, the lifting plate 28 will reciprocate up and down, so that the lifting plate 28 can scrape off the iron slag on the inner wall of the filter cartridge 26, thereby improving the filtration efficiency.

[0044] like Figure 1 and Figure 6As shown, a fixing frame 3 is fixedly connected to the top of the workbench 1, and the fixing frame 3 is arranged at the center of the workbench 1; a hydraulic cylinder 31 is fixedly connected to the top of the fixing frame 3; the output end of the hydraulic cylinder 31 passes through the fixing frame 3 and is fixedly connected to a top plate 32; four corners of the top plate 32 are slidably connected with pillars 33; the two ends of the pillars 33 are respectively fixed to the fixing frame 3 and the workbench 1; an upper mold 34 is fixedly connected to the bottom of the top plate 32; a lower mold 35 is fixedly connected to the top of the workbench 1, and the lower mold 35 cooperates with the upper mold 34; a molding part 36 is provided between the upper mold 34 and the lower mold 35; a temperature sensor 59 is fixedly connected to the side wall of the lower mold 35 away from the heat preservation box 2; the temperature sensor 59 is electrically connected to the hydraulic cylinder 31.

[0045] When the upper mold 34 and the lower mold 35 provided by the present invention are in use, during casting, it is necessary to open the hydraulic cylinder 31, and the hydraulic cylinder 31 drives the top plate 32 to move downward, and the top plate 32 drives the upper mold 34 to move downward to the lower mold 35. At this time, the top plate 32 slides on the support 33, and the support 33 limits the top plate 32 and the upper mold 34 in the vertical direction to ensure that the upper mold 34 and the lower mold 35 cooperate. Then, molten iron can be injected, cooled for a period of time, and the temperature sensor 59 monitors the specified temperature, then the hydraulic cylinder 31 can be driven, and the upper mold 34 is lifted up by the hydraulic cylinder 31 for demolding.

[0046] like Figure 2 and Figure 7 As shown, a third motor 46 is fixedly connected to the top of the workbench 1; the output shaft of the third motor 46 is fixedly connected to a rotating rod 45; the bottom of the rotating rod 45 is fixedly connected to a limiting column 44 at one end away from the third motor 46; the bottom of the limiting column 44 is slidably connected to a movable plate 42 through a limiting opening 43; connecting plates 41 are symmetrically fixedly connected to the two ends of the movable plate 42; the top of the connecting plate 41 is fixedly connected to a vertical plate 4; the vertical plates 4 all slide on the workbench 1; the tops of the two vertical plates 4 are fixedly connected to impact blocks 47 on the side walls close to the lower mold 35, and the impact blocks 47 are made of rubber; the top of the impact block 47 is higher than the top of the lower mold 35; the third motor 46 is electrically connected to the temperature sensor 59.

[0047] When the impact block 47 provided by the present invention is used, after cooling is completed and demoulding is required, in order to prevent the molded part 36 from being in close contact with the upper mold 34 and the lower mold 35, which makes demoulding inconvenient, before the upper mold 34 is raised, the third motor 46 needs to be controlled by a computer program to turn on the third motor 46, and the third motor 46 drives the rotating rod 45 to rotate, and the rotating rod 45 drives the limiting column 44 to rotate. When the limiting column 44 rotates, it slides in the limiting opening 43 and presses the limiting opening 43 at the same time, and pushes the moving plate 42 to reciprocate through the limiting opening 43, and drives the connecting plate 41 to reciprocate through the moving plate 42, and the connecting plate 41 drives the vertical plate 4 and the impact block 47 to reciprocate, and the impact block 47 hits the side walls of the upper mold 34 and the lower mold 35 to generate vibration waves, so that the molded part 36 is separated from the upper mold 34 and the lower mold 35 respectively, which is convenient for demoulding;

[0048] In addition, when injecting molten iron, the third motor 46 still needs to be turned on to drive the impact block 47 to impact, so as to accelerate the flow of molten iron through impact and prevent the molten iron from being blocked at the injection port. At the same time, through impact, the bubbles in the molten iron are vibrated and eliminated, thereby realizing the defoaming function.

[0049] like Figure 7 As shown, four L-shaped rods 48 are fixedly connected to the bottom of the workbench 1, and the L-shaped rods 48 are respectively arranged on both sides of the two connecting plates 41; limiting grooves 49 are respectively opened on both sides of the connecting plates 41; and the L-shaped rods 48 slide in the limiting grooves 49 respectively.

[0050] When the L-shaped rod 48 provided by the present invention is in use, the connecting plate 41 slides in the limiting groove 49 during the reciprocating motion of the connecting plate 41, and the L-shaped rod 48 limits the connecting plate 41 to move in the horizontal direction.

[0051] like Figure 1 and Figure 8 As shown, two slide rails 52 are symmetrically fixed to one end of the workbench 1 away from the thermal insulation box 2; a mounting frame 5 is fixed to the top of the two slide rails 52; an electric push rod 51 is fixed to the top of the mounting frame 5; a cross plate 53 is fixed to the output end of the electric push rod 51; the two ends of the cross plate 53 are respectively slidably connected to the mounting frame 5; a clamping mechanism is provided on the top of the cross plate 53; the slide rails 52 and the electric push rod 51 are respectively electrically connected to the temperature sensor 59.

[0052] When the slide rail 52 and the electric push rod 51 provided by the present invention are in use, after cooling is completed, the molded part 36 needs to be removed. By setting the electric push rod 51, the electric push rod 51 drives the cross plate 53 to move up and down, thereby taking the molded part 36 out of the lower mold 35; by setting the slide rail 52, the slide rail 52 drives the mounting frame 5 to move left and right, thereby taking the molded part 36 out to one side.

[0053] like Figure 1 and Figure 8 As shown, two fixed blocks 54 are symmetrically fixed to the bottom of the clamping mechanism; a bidirectional ball screw 55 is rotatably connected between the fixed blocks 54 through bearings; a driving motor is fixed to one side wall of the fixed block 54; the output shaft of the driving motor is fixed to one end of the bidirectional ball screw 55; two moving blocks 57 are threadedly connected to the bidirectional ball screw 55; the two moving blocks 57 are symmetrically arranged, and one side wall of the moving blocks 57 close to the lower mold 35 is fixed with an arc-shaped clamping plate 58; the inner wall of the arc-shaped clamping plate 58 is provided with anti-slip grooves; the driving motor is electrically connected to the temperature sensor 59; two guide rods 56 are fixed between the fixed blocks 54, and the moving blocks 57 slide on the guide rods 56.

[0054] When the arc clamping plate 58 provided by the present invention is in use, the mounting frame 5 moves to one side of the lower mold 35, and the driving motor is controlled to drive the bidirectional ball screw 55 to rotate, and the bidirectional ball screw 55 drives the moving block 57 to move in the opposite direction, and the moving block 57 drives the arc clamping plate 58 to move in the opposite direction, and the paper arc clamping plate 58 clamps the molded part 36; wherein a ball nut seat is provided at the connection between the bidirectional ball screw 55 and the moving block 57, and the radial movement of the moving block 57 is guaranteed by the ball nut seat, and during the movement of the moving block 57, the moving block 57 slides on the guide rod 56, and the guide rod 56 limits the moving block 57 in the horizontal direction.

[0055] like Figure 1 and Figure 3 As shown, the end of the liquid infusion tube 294 close to the lower mold 35 is provided with a water stop valve 298, a flow meter 299, and a boost valve 210 in sequence; the flow meter 299 is connected to the liquid infusion tube 294 through a flange.

[0056] When the water stop valve 298, flow meter 299 and boost valve 210 provided by the present invention are in use, the required amount of molten iron varies according to the thickness of the molded part 36. When a predetermined flow is detected by the flow meter 299, the water stop valve 298 is driven to close and the boost valve 210 is opened to increase the pressure in the infusion tube 294, complete the transportation of the molten iron in the infusion tube 294, and reduce the molten iron retained in the infusion tube 294, resulting in a lack of molten iron in the molded part 36 and the occurrence of problems such as the cooling of the molten iron blocking the infusion tube 294.

[0057] like Figures 1 to 3 As shown, the bottom of the infusion tube 294 is connected and fixedly connected to the drainage tube 212; a drainage valve 213 is installed on the drainage tube 212; a circular opening 11 is opened on the workbench 1, and the drainage valve 213 is arranged in the circular opening 11; a recovery box 211 is fixedly connected to the bottom of the workbench 1; the bottom end of the drainage tube 212 is connected and fixedly connected to the recovery box 211.

[0058] When the drainage tube 212 provided by the present invention is in use, after the injection is completed, molten iron is retained between the adapter 293 and the water stop valve 298. In order to prevent the molten iron from cooling and blocking the infusion tube 294, the drainage valve 213 needs to be opened and the molten iron is drained into the recovery box 211 through the drainage tube 212 for easy recycling and reuse.

[0059] like Figure 3 As shown, a first motor 22 is fixedly connected to the top of the insulated box 2, and the output shaft of the first motor 22 is rotatably connected to the insulated box 2 through a bearing; a stirring rod 25 is fixedly connected to the output shaft of the first motor 22, and a plurality of stirring paddles 251 are fixedly connected to the outer wall of the stirring rod 25.

[0060] When the stirring paddle 251 provided by the present invention is in use, the molten iron in the insulation box 2 can be injected for a period of time. In order to prevent the molten iron in the insulation box 2 from being stratified and having inconsistent concentrations, it is necessary to start the first motor 22 at a regular interval. The stirring rod 25 and the stirring paddle 251 are driven to rotate by the first motor 22 to maintain the fluidity of the molten iron.

[0061] Working principle: When the thickness of the water pump housing is different, the flow rate of the molten iron needs to be adjusted by turning on the second motor 296; the second motor 296 drives the gear 295 to rotate, the gear 295 drives the gear ring 292 to rotate, the gear ring 292 drives the through-hole cover 291 to rotate, and the second through hole on the through-hole cover 291 is connected with the first through hole on the through-hole plate 29 during the rotation process, and the molten iron can flow down. The larger the connecting area, the faster the flow rate and the larger the flow rate; the smaller the connecting area, the slower the flow rate and the smaller the flow rate; the circumference of the gear ring 292 is the gear ring 292. The second motor 296 is controlled by a computer program to ensure that the second motor 296 drives the first gear 295 to rotate at an angle of four times the gear 295. Then, when the gear 295 rotates half a circle, the gear ring 292 rotates 22.5°, and the second through hole can completely cross one first through hole. Therefore, the second motor 296 is controlled according to the computer program to ensure that the second motor 296 drives the first gear 295 to rotate at an angle, so as to determine the connecting area between the first through hole and the second through hole, and realize the function of adjusting the flow speed of the molten iron. Then, the molten iron is flowed through the injection port to the gap between the upper mold 34 and the lower mold 35 and the sand core through the adapter 293 and the infusion tube 294 to form a molded part 36.

[0062] By setting a water stop valve 298, a flow meter 299, and a boost valve 210, the required amount of molten iron varies according to the thickness of the molded part 36. When the flow meter 299 detects a predetermined flow rate, the water stop valve 298 is driven to close, and the boost valve 210 is opened to increase the pressure in the infusion pipe 294, so that the molten iron in the infusion pipe 294 is transported, and the molten iron retained in the infusion pipe 294 is reduced, resulting in a lack of molten iron in the molded part 36, and at the same time, the molten iron cools and blocks the infusion pipe 294. After the injection is completed, there is molten iron retained between the adapter 293 and the water stop valve 298. In order to prevent the molten iron from cooling and blocking the infusion pipe 294, it is necessary to open the drainage valve 213, and drain the molten iron into the recovery box 211 through the drainage pipe 212, so as to facilitate recycling and reuse.

[0063] After cooling is completed, when demoulding is required, in order to prevent the molded part 36 from being in close contact with the upper mold 34 and the lower mold 35, which makes demoulding inconvenient, before the upper mold 34 is raised, the third motor 46 needs to be controlled by a computer program to turn on the third motor 46, and the third motor 46 drives the rotating rod 45 to rotate, and the rotating rod 45 drives the limiting column 44 to rotate. When the limiting column 44 rotates, it slides in the limiting opening 43 and presses the limiting opening 43 at the same time, and pushes the moving plate 42 to reciprocate through the limiting opening 43, and drives the moving plate 42 to rotate. The connecting plate 41 reciprocates, and the connecting plate 41 drives the vertical plate 4 and the impact block 47 to reciprocate. The impact block 47 impacts the side walls of the upper mold 34 and the lower mold 35 to generate vibration waves, so that the molded part 36 is separated from the upper mold 34 and the lower mold 35 respectively, which is convenient for demoulding; in addition, when injecting molten iron, the third motor 46 still needs to be turned on to drive the impact block 47 to impact, so as to accelerate the flow of molten iron through impact, prevent the molten iron from being blocked at the injection port, and at the same time, through impact, the bubbles in the molten iron are eliminated by vibration, thereby realizing the defoaming function;

[0064] After cooling is completed, the molded part 36 needs to be removed. By setting an electric push rod 51, the electric push rod 51 drives the cross plate 53 to move up and down, so that the molded part 36 is taken out from the lower mold 35; by setting a slide rail 52, the slide rail 52 drives the mounting frame 5 to move left and right, so that the molded part 36 is taken out to one side; the mounting frame 5 moves to one side of the lower mold 35, and by controlling the driving motor, the driving motor drives the bidirectional ball screw 55 to rotate, and the bidirectional ball screw 55 drives the moving block 57 to move in the opposite direction, and the moving block 57 drives the arc clamping plate 58 to move in the opposite direction, and the paper arc clamping plate 58 clamps the molded part 36; wherein a ball nut seat is provided at the connection between the bidirectional ball screw 55 and the moving block 57, and the ball nut seat ensures the radial movement of the moving block 57, and during the movement of the moving block 57, the moving block 57 slides on the guide rod 56, and the guide rod 56 limits the moving block 57 in the horizontal direction.

[0065] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A water pump casing casting device, comprising: Workbench (1); A base (21) is fixedly connected to one end of the top of the workbench (1); A heat preservation box (2) fixedly connected to the top of the base (21); An upper mold (34) and a lower mold (35) are arranged in the middle above the workbench (1); A flow rate control unit is arranged at the bottom of the heat preservation box (2); The invention is characterized in that: the flow rate control unit comprises a through-hole plate (29) fixedly connected to the bottom of the heat preservation box (2); the bottom outer wall of the heat preservation box (2) is rotatably connected to a through-hole cover (291) via a bearing; the bottom inner wall of the through-hole cover (291) is in close contact with the bottom of the through-hole plate (29); the outer wall of the through-hole cover (291) is fixedly connected to a gear ring (292); the bottom outer wall of the heat preservation box (2) is fixedly connected to a fixing plate (297); the top of the fixing plate (297) is fixedly connected to a second motor (296); the output shaft of the second motor (296) is rotatably connected to the fixing plate (297) via a bearing, and extends to the bottom of the fixing plate (297) and is fixedly connected to a gear (295); the gear (295) is meshed with the gear ring (292); a plurality of first through holes are provided on the through-hole plate (29), a plurality of second through holes are provided on the through-hole cover (291), and the first through holes are respectively matched with the second through holes; The bottom of the through-hole cover (291) is connected and fixedly connected with an adapter (293), and the bottom of the adapter (293) is connected and fixedly connected with an infusion tube (294); one end of the infusion tube (294) away from the adapter (293) passes through the lower mold (35) and is connected and fixedly connected to the injection port of the lower mold (35); The top of the workbench (1) is fixedly connected to a fixed frame (3), and the fixed frame (3) is arranged at the center of the workbench (1); the top of the fixed frame (3) is fixedly connected to a hydraulic cylinder (31); the output end of the hydraulic cylinder (31) passes through the fixed frame (3) and is fixedly connected to a top plate (32); four corners of the top plate (32) are slidably connected to pillars (33); the two ends of the pillars (33) are respectively fixedly connected to the fixed frame (3) and the workbench (1); the bottom of the top plate (32) is fixedly connected to an upper mold (34); the top of the workbench (1) is fixedly connected to a lower mold (35), and the lower mold (35) cooperates with the upper mold (34); a molding piece (36) is provided between the upper mold (34) and the lower mold (35); a temperature sensor (59) is fixedly connected to the side wall of the lower mold (35) away from the heat preservation box (2); the temperature sensor (59) is electrically connected to the hydraulic cylinder (31); The top of the workbench (1) is fixedly connected to a third motor (46); the output shaft of the third motor (46) is fixedly connected to a rotating rod (45); the bottom of the rotating rod (45) is fixedly connected to a limiting column (44) at one end away from the third motor (46); the bottom of the limiting column (44) is slidably connected to a moving plate (42) through a limiting opening (43); the two ends of the moving plate (42) are symmetrically fixedly connected to connecting plates (41); the top of the connecting plate (41) is fixedly connected to a vertical plate (4); the vertical plates (4) slide on the workbench (1); the tops of the two vertical plates (4) are fixedly connected to impact blocks (47) on the side walls close to the lower mold (35), and the impact blocks (47) are made of rubber; the top of the impact blocks (47) is higher than the top of the lower mold (35); the third motor (46) is electrically connected to a temperature sensor (59); Four L-shaped rods (48) are fixedly connected to the bottom of the workbench (1), and the L-shaped rods (48) are respectively arranged on both sides of two connecting plates (41); limiting grooves (49) are respectively provided on both sides of the connecting plates (41); and the L-shaped rods (48) slide in the limiting grooves (49).

2. A water pump casing casting device according to claim 1, characterized in that: The top of the heat preservation box (2) is connected and fixedly connected to a liquid inlet pipe (23), and a control valve (24) is installed on the liquid inlet pipe (23); a filter cartridge (26) is connected to the inner wall of the top of the heat preservation box (2) by bolts, and the filter cartridge (26) is arranged directly below the liquid inlet pipe (23); two springs (27) are fixedly connected to the inner wall of the bottom of the filter cartridge (26); a lifting plate (28) is fixedly connected to the top of the two springs (27), and the edge of the lifting plate (28) is in contact with the inner wall of the filter cartridge (26).

3. A water pump casing casting device according to claim 2, characterized in that: Two slide rails (52) are symmetrically fixedly connected to one end of the workbench (1) away from the heat preservation box (2); a mounting frame (5) is fixedly connected to the top of the two slide rails (52); an electric push rod (51) is fixedly connected to the top of the mounting frame (5); a cross plate (53) is fixedly connected to the output end of the electric push rod (51); the two ends of the cross plate (53) are respectively slidably connected to the mounting frame (5); a material clamping mechanism is provided on the top of the cross plate (53); the slide rails (52) and the electric push rod (51) are respectively electrically connected to a temperature sensor (59).

4. A water pump casing casting device according to claim 3, characterized in that: Two fixed blocks (54) are symmetrically fixed to the bottom of the clamping mechanism; a bidirectional ball screw (55) is rotatably connected between the fixed blocks (54) via a bearing; a driving motor is fixed to one side wall of the fixed block (54); the output shaft of the driving motor is fixed to one end of the bidirectional ball screw (55); two moving blocks (57) are threadedly connected to the bidirectional ball screw (55); the two moving blocks (57) are symmetrically arranged, and one side wall of the moving blocks (57) close to the lower mold (35) is fixed to an arc-shaped clamping plate (58); the inner wall of the arc-shaped clamping plate (58) is provided with anti-slip grooves; the driving motor is electrically connected to the temperature sensor (59); two guide rods (56) are fixed to the fixed blocks (54), and the moving blocks (57) slide on the guide rods (56).

5. A water pump casing casting device according to claim 4, characterized in that: A water stop valve (298), a flow meter (299), and a boost valve (210) are sequentially provided at one end of the liquid infusion tube (294) close to the lower mold (35); the flow meter (299) is connected to the liquid infusion tube (294) via a flange.

6. A water pump casing casting device according to claim 5, characterized in that: The bottom of the infusion tube (294) is connected and fixedly connected to a drainage tube (212); a drainage valve (213) is installed on the drainage tube (212); a circular opening (11) is opened on the workbench (1), and the drainage valve (213) is arranged in the circular opening (11); a recovery box (211) is fixedly connected to the bottom of the workbench (1); and the bottom end of the drainage tube (212) is connected and fixedly connected to the recovery box (211).

7. A water pump casing casting device according to claim 6, characterized in that: A first motor (22) is fixedly connected to the top of the thermal insulation box (2), and an output shaft of the first motor (22) is rotatably connected to the thermal insulation box (2) via a bearing; a stirring rod (25) is fixedly connected to the output shaft of the first motor (22), and a plurality of stirring paddles (251) are fixedly connected to the outer side wall of the stirring rod (25).

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