Electric power fitting casting equipment and casting method thereof

Abstract

The invention discloses an electric hardware casting device and a casting method thereof, and the invention relates to the technical field of electric hardware casting, comprising a workbench, an injection molding machine is installed at one end of the top surface of the workbench, a vertical plate and a guard plate are fixedly connected to the other end of the top surface of the workbench, and a guide rail is fixedly connected to the top surface of the workbench, a movable frame is slidably sleeved on the outer surface of the guide rail, and an electric push rod is fixedly connected between the movable frame and the guard plate. The invention has the advantages that the cooling efficiency of the corresponding parts can be adjusted according to the temperature of each part of the electric hardware, so that the temperature difference of each part of the casting is small during the cooling process, the thermal stress of the casting is reduced, and the quality of the electric hardware after casting is improved. At the same time, the temperature drops quickly at a high temperature, and the cooling time of the casting is shortened, so that the casting cycle of the electric hardware is shortened, and at the same time, pressure is maintained at the supplementary pouring position to avoid the separation of the punch and the die due to the filling of the molten metal, which not only ensures the quality of the electric hardware, but also reduces the risk of splashing of the molten metal.

Description

Technical Field

[0001] The invention relates to the technical field of electric power fitting casting, in particular to electric power fitting casting equipment and a casting method thereof. Background Art

[0002] Power fittings are metal accessories that connect and combine various devices in the power system and play a role in transmitting mechanical loads, electrical loads and providing some protection. According to their functions and structures, they can be divided into categories such as suspension wire clamps, tension wire clamps, UT wire clamps, connection fittings, splicing fittings, protective fittings, equipment wire clamps, T-type wire clamps, busbar fittings and wire pulling fittings. According to their uses, they can be used as line fittings and substation fittings. According to the product units of power fittings, they can be divided into four units: malleable cast iron, forged, aluminum-copper-aluminum and cast iron, with a total of four units.

[0003] After searching, Chinese patent number CN116673459A discloses a vertical electric fitting casting equipment. Although it realizes the automatic unloading and receiving process during the casting process, it not only reduces the labor intensity of the operators, but also improves the production efficiency of the entire equipment and ensures the personal safety of the operators, and the use effect is excellent, but it cannot adjust the cooling efficiency of the corresponding parts of the casting equipment according to the temperature of each part of the casting, which makes the cooling speed of each part of the casting during the cooling process vary greatly, which not only affects the thermal stress of the casting, but also prolongs the cooling time of the casting, so that the casting cycle of the electric fitting is extended. At the same time, in the process of casting the electric fitting, it is necessary to pour the molten metal to reduce or optimize the generation of shrinkage cavities. In the process of pouring, the filling of the molten metal will increase the pressure locally and increase the local temperature at the same time, so it is easy to cause gaps in the mold, which not only affects the quality of the electric fittings, but also increases the risk of splashing of the molten metal. Summary of the invention

[0004] The object of the present invention is to provide an electric power fitting casting device and a casting method thereof.

[0005] In order to solve the problems raised in the above background technology, the present invention provides the following technical solutions: an electric power hardware casting equipment, comprising a workbench, an injection molding machine is installed at one end of the top surface of the workbench, a vertical plate and a guard plate are fixedly connected to the other end of the top surface of the workbench, and a guide rail is fixedly connected to the top surface of the workbench, a moving frame is slidably sleeved on the outer surface of the guide rail, an electric push rod is fixedly connected between the moving frame and the guard plate, and a sliding door is fixedly connected to the side wall of the moving frame, the sliding door is slidably connected to the guard plate, a control panel is installed on the side wall of the vertical plate, and one end of a fixed mold seat is fixedly connected to the end surface of the vertical plate, a concave mold is fixedly connected to the other end of the fixed mold seat, a movable mold seat is slidably sleeved on the end surface of the moving frame, and a convex mold is fixedly connected to the end surface of the movable mold seat;

[0006] A second cooling channel is provided in the male mold, a first cooling channel is provided in the female mold, a water inlet pipe is installed at the inlet end of the first cooling channel, a water outlet pipe is installed at the outlet end of the first cooling channel, a first through pipe is fixedly sleeved on the first cooling channel, a second through pipe is fixedly sleeved on the second cooling channel, the first through pipe extends outside the female mold, the second through pipe extends outside the male mold, a push plate is fixedly connected to the inner surface of the second through pipe, a through hole and a sliding cavity are provided in the first through pipe, a blocking ball is slidably sleeved in the sliding cavity, and a mold cavity is provided on the end surface of the female mold , and cavities are opened in the concave mold and the convex mold, a ring tube and a liquid storage cylinder are fixedly connected to the bottom surface of the cavity, one end of the air guide tube is fixedly sleeved on the outer surface of the ring tube, and the other end of the air guide tube is fixedly sleeved on the heat preservation airbag, an annular piston is slidably sleeved on the inner surface of the ring tube, one end of the connecting rod is fixedly connected to the top surface of the annular piston, the other end of the connecting rod is fixedly connected to a fixing frame, one end of the push rod is fixedly connected to the bottom surface of the fixing frame, and the other end of the push rod is fixedly connected to a cylindrical piston, a heat sink is fixedly sleeved on the bottom wall of the liquid storage cylinder, and a heat conducting rod is fixedly connected to the bottom surface of the heat sink.

[0007] As a further solution of the present invention: the outlet of the injection molding machine is engaged and sleeved with the vertical plate, the cavity on the die is connected to the outlet of the injection molding machine, the guard plate is arranged in an L shape, two guide rails are arranged, and the two guide rails are arranged symmetrically with respect to the bisector plane of the movable frame, and the cross-section of the guide rail is arranged in a mushroom shape.

[0008] As a further solution of the present invention: the distance between the female mold and the male mold is equal to the distance between the sliding door and the vertical plate, and the sliding door can be clamped with the vertical plate.

[0009] As a further solution of the present invention: the first cooling channel and the second cooling channel overlap in a mesh shape, the first through tube and the second through tube correspond to each other, and the contact surfaces of the first through tube and the second through tube are fixed with sealing rings, the push plate is arranged in a right-angle trapezoid, and the height of the push plate is equal to the diameter of the through hole, and the inclined surface of the push plate is in contact with the blocking ball.

[0010] As a further solution of the present invention: a plurality of cavities are provided, and the plurality of cavities are close to the first cooling channel and the second cooling channel, the heat-conducting rod is provided in a J-shape, and the top end of the heat-conducting rod is close to the cavity, the fixing frame is provided in a herringbone shape, a plurality of connecting rods are provided, and the plurality of connecting rods are evenly distributed about the central axis of the annular piston, the push rod and the cylindrical piston are both slidably connected to the liquid storage cylinder, evaporative liquid is placed in the liquid storage cylinder, a plurality of thermal insulation airbags are provided, and the plurality of thermal insulation airbags are respectively located in the first cooling channel and the second cooling channel.

[0011] As a further solution of the present invention: a groove is provided on the end surface of the movable frame, the groove is slidably sleeved with the movable mold base, a guide tube is fixedly sleeved in the punch, one end of the guide tube is connected to the second cooling channel, and a hydraulic push rod is installed at the other end of the guide tube.

[0012] As a further solution of the present invention: the output end of the hydraulic push rod is fixedly connected to the movable mold base, the guide tube is slidably sleeved with the movable mold base, and the hydraulic push rod is fixedly sleeved with the movable frame.

[0013] A casting method for electric power fittings casting equipment: The specific steps of the casting method for electric power fittings casting equipment are as follows:

[0014] S1. Mix the alloy powder according to the formula and put it into the injection molding machine, so that the metal powder is melted in the injection molding machine. Then, the electric push rod is started, so that the electric push rod pushes the moving frame to slide along the guide rail, so that the moving frame drives the movable mold base and the punch thereon to move horizontally until the punch and the die are closed. During the sliding process of the moving frame, the sliding door fixed to the moving frame will slide synchronously. When the punch and the die are closed, the sliding door will also contact and engage with the vertical plate;

[0015] S2, after step S1 is completed, the injection molding machine is controlled by the control panel to inject the molten metal, so that the molten metal passes through the vertical plate, the fixed mold seat and the concave mold, and is finally injected into the cavity, and gradually fills the cavity. At this time, the hydraulic pump in the workbench is started again, and the cooling water is pumped into the water inlet pipe through the hydraulic pump, and flows into the first cooling channel through the water inlet pipe. Since the first cooling channel is connected with the second cooling channel, the temperature of the concave mold and the punch is reduced, thereby reducing the temperature of the molten metal in the cavity, and gradually forming an electrical hardware;

[0016] S3. In the process of gradually forming the electric hardware, the injection molding machine is controlled by the control panel to perform additional pouring on the electric hardware so that the molten metal is filled into the cavity again. After the additional pouring is completed, the electric push rod is returned to complete the demoulding of the electric hardware.

[0017] Adopting the above technical solution: Compared with the prior art, the beneficial effects of the present invention are:

[0018] The present invention pumps cooling water into a water inlet pipe through a hydraulic pump, and the water flows into the first cooling channel through the water inlet pipe. Since the first cooling channel is connected to the second cooling channel, the temperature of the die and the punch surrounded by the first cooling channel and the second cooling channel is reduced, thereby reducing the temperature of the molten metal in the cavity and gradually forming an electrical hardware. Since the cavity is close to the first cooling channel or the second cooling channel, the ejector pin is affected by the cooling water and has a lower temperature. At this time, the ejector pin with a lower temperature will condense steam, so that the steam generated by evaporation is balanced with the steam consumed by condensation. In the process of cooling the molten metal, the temperature of the heat-conducting rod close to the cavity will decrease accordingly, thereby reducing the temperature of the evaporating liquid heated by the heat sink, reducing the rate of steam generation, and thus reducing the thrust of the steam on the ejector pin, so that the ejector pin and the annular piston are in a stable state. Under the push of atmospheric pressure, it drops accordingly, and the drop of the annular piston will re-inject the air at the bottom of the ring tube into the thermal insulation airbag, causing the thermal insulation airbag to expand accordingly, thereby reducing the cooling water flux of the corresponding part. As the cooling water flux decreases, the energy efficiency of the corresponding part decreases. In summary, in the process of cooling the molten metal to form the electric hardware, the cooling efficiency of the electric hardware with higher temperature is higher, and the cooling efficiency of the electric hardware with lower temperature is lower, so as to achieve the purpose of adjusting the cooling efficiency of the corresponding parts according to the temperature of each part of the electric hardware, so that the temperature difference of each part of the casting is smaller during the cooling process, the thermal stress of the casting is reduced, and the quality of the electric hardware after casting is improved. At the same time, the high temperature cools down quickly, which also shortens the cooling time of the casting, shortening the casting cycle of the electric hardware.

[0019] The present invention controls the injection molding machine to perform supplementary pouring on the electric hardware through a control panel, so that the molten metal is filled into the cavity again. When the molten metal is filled, the local temperature of the cavity will rise again, so that the coolant flux of the second cooling channel of the corresponding part increases sharply, so that a part of the coolant flows into the hydraulic push rod through the guide pipe, so that the hydraulic push rod extends, thereby pushing the movable mold seat close to the fixed mold seat, so that pressure is maintained at the supplementary pouring position, avoiding the separation of the male mold and the female mold due to the filling of the molten metal, not only ensuring the quality of the electric hardware, but also reducing the risk of splashing of the molten metal.

[0020] The present invention pushes the movable frame to slide along the guide rail through an electric push rod, so that the movable frame drives the movable mold base and the punch thereon to translate until the punch and the die are engaged. During the sliding process of the movable frame, the sliding door fixed to the movable frame will slide synchronously. When the punch and the die are engaged, the sliding door also contacts and engages with the vertical plate, so that the vertical plate, the sliding door and the guard plate surround the punch and the die, thereby achieving the purpose of improving casting safety and reducing the risk of injury to workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of an electric power fitting casting device of the present invention;

[0022] Figure 2This is a schematic diagram of the guide rail structure in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the concave mold in an embodiment of the present invention;

[0024] Figure 4 It is a cross-sectional view of the die structure in an embodiment of the present invention;

[0025] Figure 5 In the embodiment of the present invention Figure 4 A magnified view of the structure of part A;

[0026] Figure 6 It is a cross-sectional view of the corner of the die in the embodiment of the present invention;

[0027] Figure 7 In the embodiment of the present invention Figure 6 A magnified view of the structure of part B;

[0028] Figure 8 Schematic diagram of the first cooling channel and the second cooling channel in an embodiment of the present invention;

[0029] Fig. 9 It is a cross-sectional view of the movable frame, movable mold base and punch structure in an embodiment of the present invention.

[0030] In the figure: 1, workbench; 2, injection molding machine; 3, vertical plate; 4, guard plate; 5, guide rail; 6, moving frame; 7, electric push rod; 8, control panel; 9, fixed mold base; 10, concave mold; 11, movable mold base; 12, punch; 13, first cooling channel; 14, second cooling channel; 15, water inlet pipe; 16, water outlet pipe; 17, first through pipe; 18, second through pipe; 19, push plate; 20, through hole; 21, sliding cavity; 22, blocking ball; 23, cavity; 24, cavity; 25, ring cylinder; 26, air guide pipe; 27, thermal insulation air bag; 28, annular piston; 29, connecting rod; 30, fixed frame; 31, ejector rod; 32, cylindrical piston; 33, liquid storage cylinder; 34, heat sink; 35, heat conduction rod; 36, groove; 37, guide pipe; 38, hydraulic push rod; 39, sliding door. DETAILED DESCRIPTION

[0031] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. Example

[0032] See also Figure 3-Figure 8The present invention provides a technical solution: an electric power hardware casting device, a second cooling channel 14 is provided in a male mold 12, a first cooling channel 13 is provided in a female mold 10, a water inlet pipe 15 is installed at the inlet end of the first cooling channel 13, a water outlet pipe 16 is installed at the outlet end of the first cooling channel 13, a first through pipe 17 is fixedly sleeved on the first cooling channel 13, a second through pipe 18 is fixedly sleeved on the second cooling channel 14, the first through pipe 17 extends to the outside of the female mold 10, the second through pipe 18 extends to the outside of the male mold 12, and a push plate 19 is fixedly connected to the inner surface of the second through pipe 18, a through hole 20 and a sliding cavity 21 are provided in the first through pipe 17, a blocking ball 22 is slidably sleeved in the sliding cavity 21, and the female mold 1 0 is provided with a cavity 23, and both the concave die 10 and the convex die 12 are provided with a cavity 24, the bottom surface of the cavity 24 is fixedly connected with a ring tube 25 and a liquid storage cylinder 33, the outer surface of the ring tube 25 is fixedly sleeved with one end of an air guide tube 26, the other end of the air guide tube 26 is fixedly sleeved with a heat-insulating air bag 27, the inner surface of the ring tube 25 is slidably sleeved with an annular piston 28, the top surface of the annular piston 28 is fixedly connected with one end of a connecting rod 29, the other end of the connecting rod 29 is fixedly connected with a fixing frame 30, the bottom surface of the fixing frame 30 is fixedly connected with one end of a push rod 31, the other end of the push rod 31 is fixedly connected with a cylindrical piston 32, the bottom wall of the liquid storage cylinder 33 is fixedly sleeved with a heat sink 34, and the bottom surface of the heat sink 34 is fixedly connected with a heat-conducting rod 35.

[0033] See also Figure 8 The first cooling channel 13 and the second cooling channel 14 overlap in a mesh shape, the first through pipe 17 and the second through pipe 18 correspond to each other, and the contact surfaces of the first through pipe 17 and the second through pipe 18 are fixedly connected with sealing rings, the push plate 19 is arranged in a right-angle trapezoid, and the height of the push plate 19 is equal to the diameter of the through hole 20, and the inclined surface of the push plate 19 is in contact with the blocking ball 22.

[0034] See also Figure 4 and Figure 7 , a plurality of cavities 24 are provided, and the plurality of cavities 24 are close to the first cooling channel 13 and the second cooling channel 14, the heat conducting rod 35 is arranged in a J shape, and the top end of the heat conducting rod 35 is close to the cavity 23, the fixing frame 30 is arranged in a herringbone shape, a plurality of connecting rods 29 are provided, and the plurality of connecting rods 29 are evenly distributed about the central axis of the annular piston 28, the push rod 31 and the cylindrical piston 32 are both slidably connected to the liquid storage cylinder 33, and the evaporative liquid is placed in the liquid storage cylinder 33, and a plurality of heat-insulating airbags 27 are provided, and the plurality of heat-insulating airbags 27 are respectively located in the first cooling channel 13 and the second cooling channel 14.

[0035] Specifically, during the cooling process of the electric hardware, the injection molding machine 2 is controlled by the control panel 8 to inject the molten metal, so that the molten metal passes through the vertical plate 3, the fixed mold seat 9 and the concave mold 10, and is finally injected into the cavity 23, and gradually fills the cavity 23. After the cavity 23 is filled, the heat-conducting rod 35 close to the cavity 23 is heated rapidly, and the heat is transferred to the heat sink 34, so that the heat sink 34 heats the evaporating liquid in the liquid storage cylinder 33, so that the evaporating liquid boils and generates steam. The generated steam rises and pushes the cylindrical piston 32 to rise through the guidance of the liquid storage cylinder 33, so that the push rod 31 on the cylindrical piston 32 pulls the connecting rod 29 to rise through the fixing frame 30, so that the connecting rod 29 drives the annular The piston 28 rises, and the rise of the annular piston 28 will reduce the pressure at the bottom end of the ring tube 25, so that the gas in the heat-insulating airbag 27 is injected into the bottom end of the ring tube 25 through the air guide tube 26 to balance the pressure. At this time, the heat-insulating airbag 27 will shrink accordingly, so that the first cooling channel 13 and the second cooling channel 14 are gradually unblocked. At this time, the hydraulic pump in the workbench 1 is started again, and the cooling water is pumped into the water inlet pipe 15 through the hydraulic pump, and flows into the first cooling channel 13 through the water inlet pipe 15. Since the first cooling channel 13 is connected with the second cooling channel 14, the temperature of the concave mold 10 and the convex mold 12 surrounded by the first cooling channel 13 and the second cooling channel 14 is reduced, thereby reducing the temperature of the cavity 2 The metal liquid in the mold 23 gradually forms an electric hardware. Since the cavity 24 is close to the first cooling channel 13 or the second cooling channel 14, the ejector pin 31 is affected by the cooling water and has a lower temperature. At this time, the ejector pin 31 with a lower temperature will condense steam, so that the steam generated by evaporation is balanced with the steam consumed by condensation. In the process of cooling the metal liquid, the temperature of the heat-conducting rod 35 close to the mold cavity 23 will decrease accordingly, so that the temperature of the evaporating liquid heated by the heat sink 34 is reduced, and the rate of steam generation is reduced, so that the thrust of the steam on the ejector pin 31 is reduced, so that the ejector pin 31 and the annular piston 28 are correspondingly lowered under the push of atmospheric pressure, and the lowering of the annular piston 28 will re-enter the air at the bottom of the annular cylinder 25. New water is injected into the thermal insulation airbag 27, causing the thermal insulation airbag 27 to expand accordingly, thereby reducing the cooling water flux of the corresponding part. As the cooling water flux decreases, the energy efficiency of the corresponding part decreases. In summary, in the process of cooling the molten metal to form the electric hardware, the cooling efficiency of the electric hardware at a higher temperature is higher, and the cooling efficiency of the electric hardware at a lower temperature is lower, thereby achieving the purpose of adjusting the cooling efficiency of the corresponding part according to the temperature of each part of the electric hardware, so that the temperature difference of each part of the casting is smaller during the cooling process, reducing the thermal stress of the casting, and improving the quality of the electric hardware after casting. At the same time, the high temperature cools down quickly, which also shortens the cooling time of the casting, thereby shortening the casting cycle of the electric hardware. Example

[0036] See also Fig. 9The present invention provides a technical solution: an electric hardware casting device, a groove 36 is opened on the end surface of the movable frame 6, the groove 36 is slidably sleeved with the movable mold seat 11, a guide tube 37 is fixedly sleeved in the punch 12, one end of the guide tube 37 is connected to the second cooling channel 14, and a hydraulic push rod 38 is installed at the other end of the guide tube 37.

[0037] See also Fig. 9 The output end of the hydraulic push rod 38 is fixedly connected to the movable mold base 11, the guide tube 37 is slidably sleeved with the movable mold base 11, and the hydraulic push rod 38 is fixedly sleeved with the movable frame 6.

[0038] Specifically, during the process of supplementary pouring, the injection molding machine 2 is controlled by the control panel 8 to perform supplementary pouring on the electric hardware, so that the molten metal is filled into the cavity 23 again. When the molten metal is filled, the local temperature of the cavity 23 will rise again, so that the coolant flux of the second cooling channel 14 at the corresponding part increases sharply, so that a part of the coolant flows into the hydraulic push rod 38 through the guide tube 37, so that the hydraulic push rod 38 extends, thereby pushing the movable mold base 11 close to the fixed mold base 9, so that pressure is maintained at the supplementary pouring location, avoiding the separation of the punch 12 and the die 10 due to the filling of the molten metal, which not only ensures the quality of the electric hardware, but also reduces the risk of splashing of the molten metal. Example

[0039] See also Figure 1 and Figure 2 The present invention provides a technical solution: an electric hardware casting device, comprising a workbench 1, an injection molding machine 2 is installed at one end of the top surface of the workbench 1, a vertical plate 3 and a guard plate 4 are fixedly connected to the other end of the top surface of the workbench 1, and a guide rail 5 is fixedly connected to the top surface of the workbench 1, a moving frame 6 is slidably sleeved on the outer surface of the guide rail 5, an electric push rod 7 is fixedly connected between the moving frame 6 and the guard plate 4, and a sliding door 39 is fixedly connected to the side wall of the moving frame 6, the sliding door 39 is slidably connected to the guard plate 4, a control panel 8 is installed on the side wall of the vertical plate 3, and one end of a fixed mold seat 9 is fixedly connected to the end surface of the vertical plate 3, a concave mold 10 is fixedly connected to the other end of the fixed mold seat 9, a movable mold seat 11 is slidably sleeved on the end surface of the movable frame 6, and a convex mold 12 is fixedly connected to the end surface of the movable mold seat 11.

[0040] See also Figure 1 and Figure 2 The outlet of the injection molding machine 2 is engaged with the vertical plate 3, the cavity 23 on the die 10 is connected with the outlet of the injection molding machine 2, the guard plate 4 is L-shaped, two guide rails 5 are provided, and the two guide rails 5 are symmetrically arranged with respect to the bisecting plane of the moving frame 6, and the cross section of the guide rail 5 is mushroom-shaped.

[0041] See also Figure 2 The distance between the die 10 and the punch 12 is equal to the distance between the sliding door 39 and the vertical plate 3 , and the sliding door 39 can be snap-fitted with the vertical plate 3 .

[0042] Specifically, during the mold closing process, the electric push rod 7 is started, so that the electric push rod 7 pushes the movable frame 6 to slide along the guide rail 5, so that the movable frame 6 drives the movable mold base 11 and the punch 12 thereon to translate until the punch 12 and the die 10 are closed. During the sliding of the movable frame 6, the sliding door 39 fixed to the movable frame 6 will slide synchronously. When the punch 12 and the die 10 are closed, the sliding door 39 also contacts and engages with the vertical plate 3, so that the vertical plate 3, the sliding door 39 and the guard plate 4 surround the punch 12 and the die 10, thereby achieving the purpose of improving casting safety and reducing the risk of injury to workers.

[0043] The working principle and use process of the present invention are as follows: when it is necessary to cast electric hardware, the alloy powder is mixed according to the formula and put into the injection molding machine 2, so that the metal powder is melted in the injection molding machine 2, and then the electric push rod 7 is started, so that the electric push rod 7 pushes the moving frame 6 to slide along the guide rail 5, so that the moving frame 6 drives the movable mold base 11 and the punch 12 thereon to translate until the punch 12 and the die 10 are molded together, and during the sliding process of the moving frame 6, the sliding door 39 fixed to the moving frame 6 will slide synchronously, and when the punch 12 and the die 10 are molded together, the sliding door 39 also contacts and engages with the vertical plate 3, so that the vertical plate 3, the sliding door 39 and the guard plate 4 surround the punch 12 and the die 10, so as to achieve the purpose of improving the casting safety and reduce the risk of injury to the staff;

[0044] When the male mold 12 and the female mold 10 are molded together, the second through-tube 18 on the male mold 12 drives the push plate 19 to insert into the first through-tube 17, so that the inclined surface of the push plate 19 squeezes the blocking ball 22 in the first through-tube 17, thereby applying an oblique upward thrust to the blocking ball 22. At the same time, since the blocking ball 22 is slidably sleeved with the slide cavity 21, the blocking ball 22 slides obliquely upward along the slide cavity 21 under the action of the thrust, so that the blocking ball 22 no longer blocks the through hole 20, thereby connecting the second cooling channel 14 in the male mold 12 with the first cooling channel 13 in the female mold 10.

[0045] After the male mold 12 and the female mold 10 are molded together, the injection molding machine 2 is controlled by the control panel 8 to inject the molten metal, so that the molten metal passes through the vertical plate 3, the fixed mold seat 9 and the female mold 10, and is finally injected into the cavity 23, and gradually fills the cavity 23. After the cavity 23 is filled, the heat-conducting rod 35 close to the cavity 23 is heated rapidly and transfers the heat to the heat sink 34, so that the heat sink 34 heats the evaporating liquid in the liquid storage cylinder 33, so that the evaporating liquid boils and generates steam. The generated steam rises and pushes the cylindrical piston 32 upward through the guidance of the liquid storage cylinder 33, so that the push rod 31 on the cylindrical piston 32 pulls the connecting rod 29 upward through the fixing frame 30, so that the connecting rod 29 drives the annular The piston 28 rises, and the rise of the annular piston 28 will reduce the pressure at the bottom end of the ring tube 25, so that the gas in the heat-insulating airbag 27 is injected into the bottom end of the ring tube 25 through the air guide tube 26 to balance the pressure. At this time, the heat-insulating airbag 27 will shrink accordingly, so that the first cooling channel 13 and the second cooling channel 14 are gradually unblocked. At this time, the hydraulic pump in the workbench 1 is started again, and the cooling water is pumped into the water inlet pipe 15 through the hydraulic pump, and flows into the first cooling channel 13 through the water inlet pipe 15. Since the first cooling channel 13 is connected with the second cooling channel 14, the temperature of the concave mold 10 and the convex mold 12 surrounded by the first cooling channel 13 and the second cooling channel 14 is reduced, thereby reducing the temperature of the cavity 2 The metal liquid in the mold 23 gradually forms an electric hardware. Since the cavity 24 is close to the first cooling channel 13 or the second cooling channel 14, the ejector pin 31 is affected by the cooling water and has a lower temperature. At this time, the ejector pin 31 with a lower temperature will condense steam, so that the steam generated by evaporation is balanced with the steam consumed by condensation. In the process of cooling the metal liquid, the temperature of the heat-conducting rod 35 close to the mold cavity 23 will decrease accordingly, so that the temperature of the evaporating liquid heated by the heat sink 34 is reduced, and the rate of steam generation is reduced, so that the thrust of the steam on the ejector pin 31 is reduced, so that the ejector pin 31 and the annular piston 28 are correspondingly lowered under the push of atmospheric pressure, and the lowering of the annular piston 28 will re-enter the air at the bottom of the annular cylinder 25. Newly injected into the heat-insulating airbag 27 causes the heat-insulating airbag 27 to expand accordingly, thereby reducing the cooling water flux of the corresponding part. As the cooling water flux decreases, the energy efficiency of the corresponding part decreases. In summary, in the process of cooling the molten metal to form the electric hardware, the cooling efficiency of the electric hardware at a higher temperature is higher, and the cooling efficiency of the electric hardware at a lower temperature is lower, so as to achieve the purpose of adjusting the cooling efficiency of the corresponding part according to the temperature of each part of the electric hardware, so that the temperature difference of each part of the casting during the cooling process is small, the thermal stress of the casting is reduced, and the quality of the electric hardware after casting is improved. At the same time, the high temperature part cools down quickly, which also shortens the cooling time of the casting, so that the casting cycle of the electric hardware is shortened;

[0046] During the cooling process of the above-mentioned electric hardware, the injection molding machine 2 is controlled by the control panel 8 to perform additional pouring on the electric hardware, so that the molten metal is filled into the cavity 23 again. When the molten metal is filled, the local temperature of the cavity 23 will rise again, so that the coolant flux of the second cooling channel 14 at the corresponding part increases sharply, so that a part of the coolant flows into the hydraulic push rod 38 through the guide tube 37, so that the hydraulic push rod 38 extends, thereby pushing the movable mold base 11 close to the fixed mold base 9, so that pressure is maintained at the additional pouring location, avoiding the separation of the punch 12 and the die 10 due to the filling of the molten metal, which not only ensures the quality of the electric hardware, but also reduces the risk of splashing of the molten metal, and completes the operation.

[0047] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. An electric power fitting casting equipment, characterized in that: The invention comprises a workbench (1), wherein an injection molding machine (2) is installed at one end of the top surface of the workbench (1), a vertical plate (3) and a guard plate (4) are fixedly connected to the other end of the top surface of the workbench (1), and a guide rail (5) is fixedly connected to the top surface of the workbench (1), a movable frame (6) is slidably sleeved on the outer surface of the guide rail (5), an electric push rod (7) is fixedly connected between the movable frame (6) and the guard plate (4), and a sliding door (39) is fixedly connected to the side wall of the movable frame (6), and the sliding door (39) is slidably connected to the guard plate (4), a control panel (8) is installed on the side wall of the vertical plate (3), and one end of a fixed mold seat (9) is fixedly connected to the end surface of the vertical plate (3), and a concave mold (10) is fixedly connected to the other end of the fixed mold seat (9), a movable mold seat (11) is slidably sleeved on the end surface of the movable frame (6), and a male mold (12) is fixedly connected to the end surface of the movable mold seat (11); The punch (12) is provided with a second cooling channel (14), the die (10) is provided with a first cooling channel (13), the inlet end of the first cooling channel (13) is provided with a water inlet pipe (15), the outlet end of the first cooling channel (13) is provided with a water outlet pipe (16), the first cooling channel (13) is fixedly sleeved with a first through pipe (17), the second cooling channel (14) is fixedly sleeved with a second through pipe (18), the first through pipe (17) extends outside the die (10), the second through pipe (18) extends outside the punch (12), and a push plate (19) is fixedly connected to the inner surface of the second through pipe (18), the first through pipe (17) is provided with a through hole (20) and a sliding cavity (21), a blocking ball (22) is slidably sleeved in the sliding cavity (21), and a mold cavity (20) is provided on the end surface of the die (10). 3), and a cavity (24) is provided in each of the concave mold (10) and the convex mold (12), a ring tube (25) and a liquid storage tube (33) are fixedly connected to the bottom surface of the cavity (24), one end of an air guide tube (26) is fixedly sleeved on the outer surface of the ring tube (25), the other end of the air guide tube (26) is fixedly sleeved on a heat-insulating air bag (27), an annular piston (28) is slidably sleeved on the inner surface of the ring tube (25), one end of a connecting rod (29) is fixedly connected to the top surface of the annular piston (28), the other end of the connecting rod (29) is fixedly connected to a fixing frame (30), one end of a push rod (31) is fixedly connected to the bottom surface of the fixing frame (30), the other end of the push rod (31) is fixedly connected to a cylindrical piston (32), a heat sink (34) is fixedly sleeved on the bottom wall of the liquid storage tube (33), and a heat conducting rod (35) is fixedly connected to the bottom surface of the heat sink (34).

2. The electric power fitting casting equipment according to claim 1, characterized in that: The outlet of the injection molding machine (2) is engaged with the vertical plate (3), the cavity (23) on the female mold (10) is connected to the outlet of the injection molding machine (2), the guard plate (4) is arranged in an L shape, two guide rails (5) are arranged, and the two guide rails (5) are symmetrically arranged with respect to the bisecting plane of the movable frame (6), and the cross section of the guide rail (5) is arranged in a mushroom shape.

3. The electric power fitting casting equipment according to claim 1, characterized in that: The distance between the concave mold (10) and the convex mold (12) is equal to the distance between the sliding door (39) and the vertical plate (3), and the sliding door (39) can be snap-connected with the vertical plate (3).

4. The electric power fitting casting equipment according to claim 1, characterized in that: The first cooling channel (13) and the second cooling channel (14) overlap in a mesh shape, the first through tube (17) and the second through tube (18) correspond to each other, and the contact surfaces of the first through tube (17) and the second through tube (18) are both fixedly connected with sealing rings, the push plate (19) is arranged in a right-angle trapezoidal shape, and the height of the push plate (19) is equal to the diameter of the through hole (20), and the inclined surface of the push plate (19) contacts the blocking ball (22).

5. The electric power fitting casting equipment according to claim 1, characterized in that: A plurality of cavities (24) are provided, and the plurality of cavities (24) are close to the first cooling channel (13) and the second cooling channel (14); the heat conducting rod (35) is provided in a J-shape, and the top end of the heat conducting rod (35) is close to the cavity (23); the fixing frame (30) is provided in a herringbone shape; a plurality of connecting rods (29) are provided, and the plurality of connecting rods (29) are evenly distributed about the central axis of the annular piston (28); the push rod (31) and the columnar piston (32) are both slidably sleeved with a liquid storage cylinder (33); evaporative liquid is placed in the liquid storage cylinder (33); a plurality of heat-insulating airbags (27) are provided, and the plurality of heat-insulating airbags (27) are respectively located in the first cooling channel (13) and the second cooling channel (14).

6. The electric power fitting casting equipment according to claim 1, characterized in that: A groove (36) is provided on the end surface of the movable frame (6), the groove (36) is slidably sleeved with the movable mold base (11), a guide tube (37) is fixedly sleeved in the punch (12), one end of the guide tube (37) is connected to the second cooling channel (14), and a hydraulic push rod (38) is installed at the other end of the guide tube (37).

7. The electric power fitting casting equipment according to claim 6, characterized in that: The output end of the hydraulic push rod (38) is fixedly connected to the movable mold base (11), the guide tube (37) is slidably sleeved with the movable mold base (11), and the hydraulic push rod (38) is fixedly sleeved with the movable frame (6).

8. A casting method for electric power fitting casting equipment according to any one of claims 1 to 7, characterized in that: The specific steps of the casting method of the electric power fitting casting equipment are as follows: S1, alloy powder is mixed according to a formula and put into an injection molding machine (2), so that the alloy powder is melted in the injection molding machine (2), and then the electric push rod (7) is started, so that the electric push rod (7) pushes the movable frame (6) to slide along the guide rail (5), so that the movable frame (6) drives the movable mold base (11) and the punch (12) thereon to move horizontally until the punch (12) and the die (10) are molded together. During the sliding process of the movable frame (6), the sliding door (39) fixed to the movable frame (6) will slide synchronously. When the punch (12) and the die (10) are molded together, the sliding door (39) also contacts and engages with the vertical plate (3); S2. After step S1 is completed, the injection molding machine (2) is controlled by the control panel (8) to inject the molten metal, so that the molten metal passes through the vertical plate (3), the fixed mold seat (9) and the concave mold (10), and is finally injected into the mold cavity (23), and gradually fills the mold cavity (23). At this time, the hydraulic pump in the workbench (1) is started again, and cooling water is pumped into the water inlet pipe (15) through the hydraulic pump, and flows into the first cooling channel (13) through the water inlet pipe (15). Since the first cooling channel (13) is connected to the second cooling channel (14), the temperature of the concave mold (10) and the convex mold (12) is reduced, thereby reducing the temperature of the molten metal in the mold cavity (23), and gradually forming the electric hardware. S3. In the process of gradually forming the electric hardware, the injection molding machine (2) is controlled by the control panel (8) to perform additional pouring on the electric hardware, so that the molten metal is filled into the mold cavity (23) again. After the additional pouring is completed, the electric push rod (7) is returned, and the demoulding of the electric hardware is completed.

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