Zinc alloy die-casting equipment for machining hardware tool and measuring tool ruler handle and machining method of zinc alloy die-casting equipment

Abstract

The invention discloses zinc alloy die-casting equipment for machining hardware tool and measuring tool ruler handles and a machining method of the zinc alloy die-casting equipment, and particularly relates to the technical field of die-casting equipment. The zinc alloy die-casting equipment comprises a base, a die-casting chamber is arranged in the center of the top of the base, a fixing table is arranged in the die-casting chamber, and a heat preservation smelting furnace is arranged on one side of the die-casting chamber; a discharging port is formed in one side of the heat preservation smelting furnace, a die pressing mechanism is arranged in the die casting chamber, an ejection assembly is arranged on one side of the die pressing mechanism, and the die pressing mechanism comprises a fixed die, a telescopic air cylinder, a movable die, a material injection hole, an exhaust hole and an injection device. The molded ruler handle is automatically ejected out through the ejection assembly, meanwhile, the nozzle sprays compressed air between the part and the mold cavity at the ejection moment of the ejection block, local vacuum is rapidly damaged, the ejection resistance is greatly reduced, the ejector rod impression or part deformation risk is reduced, strain, scraping or breakage caused by hard ejection is avoided, and the service life of the ruler handle is prolonged. And die and part surface integrity is protected.

Description

Technical Field

[0001] This application relates to the technical field of die-casting equipment. More specifically, this application relates to a zinc alloy die-casting equipment for processing the shanks of hardware tools and measuring tools and its processing method. Background Art

[0002] A die-casting machine is a series of industrial casting machines that inject molten metal under pressure into a mold for cooling and forming, and obtain solid metal castings after opening the mold. With the progress of science and technology and industrial production, especially with the development of industries such as automobiles, motorcycles, and household appliances, die-casting technology has developed extremely rapidly. The zinc alloy die-casting machine belongs to one of them; After retrieval, the existing patent publication number: CN216828566U discloses a precision zinc alloy die-casting forming equipment, including a die-casting machine and a pouring mechanism body. An installation column is installed on one side of the die-casting machine. The top of the installation column is fixedly connected with an inner circular plate. The outer side of the inner circular plate is rotationally connected with an outer circular plate. Multiple groups of die-casting molds are installed on the upper surface of the outer circular plate. A second motor is fixedly installed at the bottom of the inner circular plate. For the precision zinc alloy die-casting forming equipment, through the combined use of the inner circular plate and the outer circular plate, the transmission gear is used to drive the inner gear ring to rotate, thereby driving the outer circular plate to rotate. At the same time, multiple groups of die-casting molds can be installed through the outer circular plate. Through the rotation of the outer circular plate, operations such as demolding and cleaning can be carried out outside the die-casting machine, greatly improving the safety of the precision zinc alloy die-casting forming equipment and at the same time improving the processing efficiency. The inventor found the following problems in the prior art during the implementation of this application: After the zinc alloy parts cool and shrink, they are easily closely attached to the mold cavity. At present, when the zinc alloy die-casting equipment demolds, it often only uses the ejection structure to rigidly eject the casting. When the mold is opened, negative pressure adsorption is likely to occur between the workpiece and the mold cavity, and the ejection resistance is relatively large. Direct ejection is likely to cause risks such as ejector marks or part deformation, or workpiece scratching or fracture, affecting the surface integrity of the mold and parts; Therefore, in view of the above problems, a zinc alloy die-casting equipment for processing the shanks of hardware tools and measuring tools and its processing method are proposed. Content of the Application

[0003] In order to overcome the above-mentioned defects of the prior art, this application provides a zinc alloy die-casting equipment for processing the shanks of hardware tools and measuring tools and its processing method to solve the problems raised in the above background art.

[0004] To achieve the above object, the present application provides the following technical solution: a zinc alloy die-casting device for processing the handle of a hardware tool and measuring tool, including a base, a die-casting chamber is arranged at the center of the top of the base, a fixed table is arranged inside the die-casting chamber, a heat-preserving melting furnace is arranged on one side of the die-casting chamber, a discharge port is arranged on one side of the heat-preserving melting furnace, a die pressing mechanism is arranged inside the die-casting chamber, and an ejection assembly is arranged on one side of the die pressing mechanism. The die pressing mechanism includes a fixed die, a telescopic cylinder, a movable die, a material injection hole, an exhaust hole and an injector. A fixed die is arranged on one side of the fixed table, a telescopic cylinder is fixedly connected to the side of the fixed table away from the fixed die, the telescopic end of the telescopic cylinder is fixedly connected to a movable die, the movable die is matched with the fixed die, a material injection hole is arranged on one side of the fixed die, an injector is communicated with one side of the material injection hole, and an exhaust hole is arranged on one side of the fixed die.

[0005] Preferably, the ejection assembly includes a through groove, a top rod, a connecting plate, a spring, a rotating head and a top block. Through grooves are arranged in a row on one side of the movable die, a top rod penetrates through the inside of the through groove, one end of the top rod extends to the outside of the side of the movable die away from the fixed die, and a connecting plate is connected to the end of the top rod. The connecting plate is movably connected to the top rod through a bearing. Springs are arranged in a row at one end of the connecting plate. The ends of the springs away from the connecting plate are connected to the movable die, and the springs are respectively sleeved on the outer wall of the top rod. A rotating head is fixedly connected to the end of the top rod away from the connecting plate, and a top block is movably connected to one end of the rotating head through a bearing.

[0006] Preferably, the surface of the top block is on the same straight line as the inner wall of the cavity of the movable die, and a sealing ring is arranged at the edge of the top block. A limiting stop block is fixedly connected to the fixed end of the telescopic cylinder, and the limiting stop block is arranged on one side of the connecting plate. Nozzles are arranged in a row at the edge of the rotating head. A diversion pipe penetrates through the center of the top rod, and the diversion pipe is communicated with the nozzle.

[0007] Preferably, a threaded groove is arranged on the surface of the top rod, a threaded cylinder is fixedly connected to the inner wall of the middle part of the through groove, the top rod penetrates through the threaded cylinder, and the threaded groove is threadedly connected with the threaded cylinder. Limiting grooves are arranged on the inner walls of the two sides of the movable die close to the through groove. Limiting rods are fixedly connected to the inner walls of the two sides of the top block, and the limiting rods are embedded in the limiting grooves.

[0008] Preferably, a linkage pipe is arranged on one side of the connecting plate. The linkage pipe is connected to the diversion pipe through a rotary joint, and multiple groups of the diversion pipes are communicated with each other. One end of one of the linkage pipes is respectively connected to an air guide pipe and a liquid guide pipe through a three-way valve, and the air guide pipe and the liquid guide pipe are arranged oppositely. A blower pump is arranged on one side of the telescopic cylinder, and the air outlet end of the blower pump is communicated with the air guide pipe.

[0009] Preferably, a fixed frame is provided on one side of the die-casting chamber. An oil storage tank is provided on the top of the fixed frame. The end of the liquid guide pipe far from the linkage pipe is communicated with the oil storage tank, and an oil pump is provided in the middle of the liquid guide pipe.

[0010] Preferably, a first air duct is provided inside the moving mold. The first air duct is communicated with the through groove, and the connection part between the first air duct and the through groove is provided on one side of the nozzle. A second air duct is provided inside one side of the fixed mold, and the second air duct penetrates through the fixed mold. Guide grooves are arranged in a row at the edge of one side of the fixed mold, and the guide grooves are distributed at the upper and lower ends of the fixed mold. The guide grooves are communicated with the second air duct. A guide rod is connected to the edge of one side of the moving mold, and the guide rod is tubular. One end of the guide rod is communicated with the first air duct, and the guide rod corresponds to the guide groove.

[0011] Preferably, electric telescopic rods are fixedly connected to both edges of the moving mold. One end of the electric telescopic rod is connected with a pulling block. A trigger switch is arranged at the edge of the connecting plate, and the trigger switch is arranged corresponding to the pulling block. An electric control box is provided on one side of the fixed frame.

[0012] Preferably, a cleaning component is provided on the top of the die-casting chamber. The cleaning component includes an electric push rod, a connecting disc, a jet nozzle, a high-pressure air pipe, a shunt pipe, a drying and filtering box, and a high-pressure air pump. The inner wall of the top of the die-casting chamber is fixedly connected with an electric push rod. The bottom end of the electric push rod is connected with a connecting disc. Jet nozzles are arranged on the surface of the connecting disc. One end of the connecting disc is communicated with a high-pressure air pipe. A shunt pipe is communicated in the middle of the high-pressure air pipe, and the shunt pipe penetrates through the fixed mold. One end of the top of the shunt pipe is communicated with a drying and filtering box, and the end of the high-pressure air pipe is connected with a high-pressure air pump.

[0013] Preferably, the processing method includes the following steps: Step 1: Mold closing and forming. First, control the connection between the liquid guide pipe and the linkage pipe through a three-way valve, so that the release agent in the oil storage tank is conducted into the liquid guide pipe through the oil pump, then into the diversion pipe, and then sprayed out from the nozzle, thus realizing the spraying of the release agent in the mold cavity. Subsequently, the moving mold and the fixed mold are pushed to close by a telescopic cylinder to form a precision ruler handle cavity. The guide rod and the guide groove are accurately aligned, and the gas circuit is pre-connected. The zinc alloy liquid is output by a heat preservation melting furnace, and then the injector injects it into the cavity under high pressure through the injection hole, and the gas is discharged through the exhaust hole. Step 2: The fan pump works continuously. The air flow is sprayed into the first air duct through the nozzle, then enters the guide groove through the guide rod and flows through the second air duct. The high-speed flow of the air in the first air duct takes away the high temperature inside the moving mold, and the high-speed flow of the air in the second air duct takes away the high temperature inside the fixed mold, realizing the auxiliary heat dissipation of the fixed mold and the moving mold. Subsequently, the air flow is discharged from the air outlet end of the second air duct. Step 3: Mold opening and ejection. The telescopic air cylinder retracts to open the mold. After the connecting plate abuts against the limit stop block, the connecting plate pushes the ejector rod and the ejector block to eject the casting. The limit rod slides in the limit groove to force the ejector block to move linearly. The high-speed air flow is conducted into the air guide pipe through the fan pump, then flows through the three-way valve and the linkage pipe and is introduced into the diversion pipe and ejected from the nozzle as high-speed air flow. When the ejector block ejects, the nozzle sprays compressed air between the part and the mold cavity, quickly breaking the local vacuum and greatly reducing the ejection resistance. Step 4: Space cleaning. The cleaning component is activated by the electric control box according to the preset program after receiving the signal that the mold opening is in place, and is started by the high-pressure air pump. Most of the air extracted is directly directed to the end of the high-pressure air pipe, introduced into the connecting plate, and finally ejected through the air jet nozzle to clean the mold cavity.

[0014] Technical effects and advantages of the present application: 1. Compared with the prior art, when the zinc alloy die-casting equipment for processing the handle of a hardware tool and its processing method are formed, the formed handle can be automatically ejected by the ejection component. At the same time, when the ejector block ejects, the nozzle sprays compressed air between the part and the mold cavity, quickly breaking the local vacuum, greatly reducing the ejection resistance, reducing the risk of ejector rod marks or part deformation, avoiding scratches, abrasions or fractures caused by hard ejection, and protecting the surface integrity of the mold and the part.

[0015] 2. Compared with the prior art, in the zinc alloy die-casting equipment for processing the handle of a hardware tool and its processing method of the present application, the fan pump works continuously, and the air flow is sprayed into the first air duct through the nozzle, then flows through the guide rod into the guide groove and then through the second air duct. The high-speed air flow in the first air duct takes away the high temperature inside the moving mold, and the high-speed air flow in the second air duct takes away the high temperature inside the fixed mold, realizing the auxiliary heat dissipation of the fixed mold and the moving mold. At the same time, the high-speed air flow can assist in generating a thrust on the release agent, realizing the function of auxiliary pushing. Brief description of the drawings

[0016] Figure 1 Schematic three-dimensional structure of the present application Figure 1 ; Figure 2 Schematic three-dimensional structure of the present application Figure 2 ; Figure 3 Schematic internal structure diagram of the die-casting chamber of the present application; Figure 4 Schematic side view structure of the present application; Figure 5 Schematic connection structure diagram of the fixed mold and the moving mold of the present application; Figure 6 Schematic moving mold structure diagram of the present application; Figure 7 Schematic cleaning component structure diagram of the present application; Figure 8 Schematic diagram of the ejection component connection structure of the present application.

[0017] The reference numerals are: 1, base; 2, die casting chamber; 3, fixed table; 4, heat preservation melting furnace; 5, discharge port; 6, die pressing mechanism; 601, fixed die; 602, telescopic cylinder; 603, moving die; 604, injection hole; 605, exhaust hole; 606, injection plunger; 7, ejection component; 701, through groove; 8, ejector rod; 9, connecting plate; 10, spring; 11, rotating head; 12, ejector block; 121, sealing ring; 122, limit stop block; 13, nozzle; 131, diversion pipe; 14, threaded groove; 15, threaded cylinder; 16, limiting groove; 17, limiting rod; 18, linkage pipe; 19, three-way valve; 20, air duct; 21, liquid guide pipe; 22, fan pump; 23, fixing frame; 24, oil storage tank; 25, oil pump; 26, first air duct; 27, second air duct; 28, guiding groove; 29, guiding rod; 30, electric telescopic rod; 31, pulling block; 32, trigger switch; 33, electric control box; 34, cleaning component; 341, electric push rod; 342, connecting disk; 343, air jet nozzle; 344, high-pressure air pipe; 345, shunt pipe; 346, drying and filtering box; 347, high-pressure air pump. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application. Embodiment 1

[0019] As shown in the appended Figures 1 to 8 figures, a zinc alloy die casting equipment for processing the handle of a hardware tool includes a base 1. A die casting chamber 2 is provided at the center of the top of the base 1. A fixed table 3 is provided inside the die casting chamber 2. A heat preservation melting furnace 4 is provided on one side of the die casting chamber 2. A discharge port 5 is provided on one side of the heat preservation melting furnace 4. A die pressing mechanism 6 is provided inside the die casting chamber 2. An ejection component 7 is provided on one side of the die pressing mechanism 6. The die pressing mechanism 6 includes a fixed die 601, a telescopic cylinder 602, a moving die 603, an injection hole 604, an exhaust hole 605 and an injection plunger 606. A fixed die 601 is provided on one side of the fixed table 3. A telescopic cylinder 602 is fixedly connected to the side of the fixed table 3 away from the fixed die 601. The telescopic end of the telescopic cylinder 602 is fixedly connected to a moving die 603. The moving die 603 matches the fixed die 601. An injection hole 604 is provided on one side of the fixed die 601. An injection plunger 606 is communicated with one side of the injection hole 604. An exhaust hole 605 is provided on one side of the fixed die 601.

[0020] Among them, the whole device is installed on the base 1. The die-casting chamber 2 is its core working area. The heat-preserving melting furnace 4 is arranged on one side of the die-casting chamber 2 and is used to melt and keep warm the zinc alloy melt, so as to maintain appropriate die-casting temperature and fluidity. The discharge port 5 is used for discharging the material from the heat-preserving melting furnace 4. The telescopic end of the telescopic cylinder 602 extends out, pushing the moving die 603 to move towards the fixed die 601 until the two are tightly closed. At this time, the moving die 603 and the fixed die 601 jointly enclose a precise ruler handle-shaped die cavity. The injection unit 606 is started by the high-pressure injection cylinder. It sucks the molten zinc alloy from the heat-preserving melting furnace 4 and injects the molten metal into the closed die cavity at a very high speed and high pressure through the channel connected to the injection hole 604. During the process of the molten metal filling the cavity at high speed, the original air in the cavity and a small amount of gas that may be generated during the die-casting process need to be discharged from the cavity through the exhaust hole 605 in time to prevent the gas from being trapped inside the solidified casting to form pore defects. The hot molten zinc alloy filling the cavity quickly cools inside the mold and solidifies to form a solid ruler handle casting. When it is formed, the formed ruler handle can be automatically ejected by the ejection assembly 7. Embodiment 2

[0021] Based on Embodiment 1, the solution in Embodiment 1 is further refined and introduced in combination with the following specific working modes, as Figures 1 to 8 shown, and the details are described below: As a preferred implementation manner, the ejection assembly 7 includes a through groove 701, ejector rods 8, a connecting plate 9, springs 10, a rotating head 11 and a top block 12. A through groove 701 is arranged on one side of the moving die 603 in an array. The through groove 701 is internally connected through the ejector rod 8. One end of the ejector rod 8 extends to the outside of the moving die 603 away from the fixed die 601, and a connecting plate 9 is connected to the end of the ejector rod 8. The connecting plate 9 is movably connected to the ejector rod 8 through a bearing. One end of the connecting plate 9 is connected with springs 10 in an array. The end of the spring 10 away from the connecting plate 9 is connected to the moving die 603, and the spring 10 is respectively sleeved on the outer wall of the ejector rod 8. A rotating head 11 is fixedly connected to the end of the ejector rod 8 away from the connecting plate 9. A top block 12 is movably connected to one end of the rotating head 11 through a bearing. Among them, after the casting reaches sufficient strength in the mold, the piston rod of the telescopic cylinder 602 contracts, pulling the moving die 603 away from the fixed die 601, and the two are separated, and the die cavity is opened. The movement of the moving die 603 drives the ejector rod 8 and the connecting plate 9 to move synchronously. When the connecting plate 9 abuts against the limit stop block 122, the movement stops. The moving die 603 continues to move, so that the ejector rod 8 and the top block 12 are ejected towards the die cavity direction of the moving die 603, thereby automatically ejecting the casting and realizing the function of automatic discharging. The spring 10 plays a role of supporting and rebounding, and can keep the current position when the connecting plate 9 is not affected by external forces.

[0022] As a preferred embodiment, the surface of the top block 12 is in the same straight line as the inner wall of the cavity of the moving die 603, and a sealing ring 121 is provided at the edge of the top block 12. The fixed end of the telescopic cylinder 602 is fixedly connected with a limit stop 122. The limit stop 122 is arranged on one side of the connecting plate 9. Nozzles 13 are arranged in an array at the edge of the rotating head 11. A diversion pipe 131 penetrates through the center of the ejector rod 8. The diversion pipe 131 is communicated with the nozzle 13. Among them, the sealing ring 121 plays a sealing role, the limit stop 122 plays a limiting role, and the rotating head 11 can rotate synchronously with the ejector rod 8, thereby driving the nozzle 13 to rotate. The diversion pipe 131 plays a connecting role.

[0023] As a preferred embodiment, a thread groove 14 is provided on the surface of the ejector rod 8. A threaded cylinder 15 is fixedly connected to the inner wall of the middle part of the through groove 701. The ejector rod 8 penetrates through the threaded cylinder 15, and the thread groove 14 is in threaded connection with the threaded cylinder 15. The inner walls of the moving die 603 near both sides of the through groove 701 are provided with limit grooves 16. Limit rods 17 are fixedly connected to both inner walls of the top block 12. The limit rods 17 are embedded in the limit grooves 16. Among them, the lead angle between the thread groove 14 and the threaded cylinder 15 is greater than the equivalent friction angle and does not have self-locking property. When the ejector rod 8 moves, the threaded connection between the thread groove 14 and the threaded cylinder 15 enables the ejector rod 8 to rotate around its axis while moving. The rotation of the ejector rod 8 can drive the rotating head 11 to rotate synchronously, so as to drive the nozzle 13 to rotate synchronously, thereby realizing rotary jetting. The limit rods 17 and the limit grooves 16 play a limiting role to prevent the top block 12 from rotating.

[0024] As a preferred embodiment, a linkage pipe 18 is provided on one side of the connecting plate 9. The linkage pipe 18 is connected with the diversion pipe 131 through a rotary joint, and multiple groups of diversion pipes 131 are interconnected. One end of one side of the linkage pipe 18 is respectively connected with an air guide pipe 20 and a liquid guide pipe 21 through a three-way valve 19, and the air guide pipe 20 and the liquid guide pipe 21 are arranged oppositely. A blower pump 22 is arranged on one side of the telescopic cylinder 602. The air outlet end of the blower pump 22 is communicated with the air guide pipe 20. Among them, the three-way valve 19 can control the connection relationship between the air guide pipe 20 and the liquid guide pipe 21 and the linkage pipe 18. The air guide pipe 20 is always in communication with the linkage pipe 18. Under normal conditions, the liquid guide pipe 21 is in a closed state with the linkage pipe 18. The high-speed air flow can be conducted into the air guide pipe 20 through the blower pump 22, then flows through the three-way valve 19 and the linkage pipe 18 and is introduced into the diversion pipe 131 and ejected from the nozzle 13 as high-speed air flow. After the zinc alloy part cools and shrinks, it is easy to fit tightly with the cavity. When the mold is opened, negative pressure adsorption is generated. When the top block 12 ejects instantaneously, the nozzle 13 sprays compressed air between the part and the cavity, quickly breaking the local vacuum, greatly reducing the ejection resistance, reducing the risk of ejector rod 8 imprints or part deformation, and avoiding scratches, abrasions or fractures caused by hard ejection, thereby protecting the integrity of the mold and part surfaces.

[0025] As a preferred embodiment, a fixing frame 23 is provided on one side of the die-casting chamber 2. A fuel tank 24 is provided on the top of the fixing frame 23. One end of the liquid guide pipe 21 far from the linkage pipe 18 is communicated with the fuel tank 24, and an oil pump 25 is provided in the middle of the liquid guide pipe 21. Among them, before die-casting in the mold cavity, the communication between the liquid guide pipe 21 and the linkage pipe 18 can be controlled by the three-way valve 19, so that the release agent in the fuel tank 24 is conducted into the liquid guide pipe 21 by the oil pump 25 and then introduced into the diversion pipe 131 and sprayed out from the nozzle 13, thus realizing the spraying of the release agent in the mold cavity. At the same time, when the ejector block 12 ejects, the nozzle 13 sprays in a rotating manner, improving its uniformity, and the air guide pipe 20 is always in a through state, and the high-speed air flow can assist in generating a thrust on the release agent, realizing the function of auxiliary pushing.

[0026] As a preferred embodiment, a first air duct 26 is provided inside the moving mold 603. The first air duct 26 is communicated with the through groove 701, and the connection between the first air duct 26 and the through groove 701 is arranged on one side of the nozzle 13. A second air duct 27 is provided inside one side of the fixed mold 601, and the second air duct 27 penetrates through the fixed mold 601. Guide grooves 28 are arranged in a row on one side edge of the fixed mold 601, and the guide grooves 28 are distributed at the upper and lower ends of the fixed mold 601. The guide grooves 28 are communicated with the second air duct 27. One side edge of the moving mold 603 is connected with a guide rod 29, and the guide rod 29 is tubular. One end of the guide rod 29 is communicated with the first air duct 26, and the guide rod 29 corresponds to the guide groove 28. Among them, the correspondence between the guide rod 29 and the guide groove 28 improves the accuracy during die-casting. When the ejector block 12 remains closed, the air guide pipe 20 and the linkage pipe 18 always maintain a connected relationship, and the fan pump 22 continuously works. The air flow is sprayed into the first air duct 26 through the nozzle 13. The first air duct 26 is evenly distributed inside the moving mold 603. The high-speed flow of the air flow inside the first air duct 26 takes away the high temperature inside the moving mold 603, thus realizing the function of auxiliary cooling. When the moving mold 603 and the fixed mold 601 are opened, the air flow is sprayed out to the outside through the guide rod 29. When the moving mold 603 and the fixed mold 601 are closed, the air flow passes through the guide rod 29 into the guide groove 28 and then flows through the second air duct 27, realizing the auxiliary heat dissipation of the fixed mold 601. Then the air flow is discharged from the air outlet end of the second air duct 27.

[0027] As a preferred embodiment, both side edges of the movable mold 603 are fixedly connected with an electric telescopic rod 30, one end of the electric telescopic rod 30 is connected with a pull block 31, a trigger switch 32 is arranged at the edge of the connecting plate 9, the trigger switch 32 is arranged corresponding to the pull block 31, and an electric control box 33 is arranged on one side of the fixed frame 23, the trigger switch 32 is the control switch of the three-way valve 19, when the trigger switch 32 is not in contact with the pull block 31, the three-way valve 19 controls the closure between the liquid guide tube 21 and the linkage tube 18, when it is necessary to spray the release agent, the pull block 31 is pulled toward the connecting plate 9 by the electric telescopic rod 30, thereby pushing the connecting plate 9 to move and ejecting the ejection block 12, at this time, the pull block 31 of the trigger switch 32 is not in contact, thereby realizing the passage of the release agent.

[0028] As a preferred embodiment, a cleaning assembly 34 is provided at the top of the die-casting chamber 2, and the cleaning assembly 34 includes an electric push rod 341, a connecting plate 342, an air nozzle 343, a high-pressure air pipe 344, a shunt pipe 345, a drying filter box 346 and a high-pressure air pump 347. The top inner wall of the die-casting chamber 2 is fixedly connected with an electric push rod 341, the bottom end of the electric push rod 341 is connected with a connecting plate 342, and the surface of the connecting plate 342 is arranged with air nozzles 343. One end of the connecting plate 342 is connected with a high-pressure air pipe 344, and the middle part of the high-pressure air pipe 344 is connected with a shunt pipe 345, and the shunt pipe 345 runs through the fixed mold 601. The top end of the shunt pipe 345 is connected with a drying filter box 346, and the high-pressure air pipe 344 is connected with a shunt pipe 345. The end is connected to a high-pressure air pump 347, wherein the cleaning component 34 is activated by the electric control box 33 according to a preset program after the mold opening signal is received. The high-pressure air pump 347 is started to draw air to the main passage. Most of the gas flows directly to the end of the high-pressure air pipe 344, passes into the connecting plate 342, and is finally ejected through the air nozzle 343 to clean the mold cavity. Part of the gas is led out to the shunt pipe 345 through the shunt pipe 345. The shunt pipe 345 is inserted through the interior of the fixed mold 601. The high-speed airflow passes through it to take away the internal heat, thereby playing a role in assisting the cooling of the fixed mold 601. At the same time, the trace water vapor generated after the heat exchange of the airflow is adsorbed by the drying filter box 346, and then flows into the high-pressure air pipe 344 and continues to be ejected by the high-pressure airflow.

[0029] As a preferred embodiment, the processing method comprises the following steps: Step 1: Mold closing and forming. First, control the connection between the liquid guide pipe 21 and the linkage pipe 18 through the three-way valve 19, so that the release agent in the storage oil tank 24 is conducted into the liquid guide pipe 21 by the oil pump 25, then introduced into the diversion pipe 131 and sprayed out from the nozzle 13, thus realizing the spraying of the release agent in the mold cavity. Subsequently, the moving mold 603 is pushed by the telescopic cylinder 602 to close with the fixed mold 601 to form a precision ruler handle cavity. The guide rod 29 is accurately aligned with the guide groove 28, and the gas circuit is pre-connected. The zinc alloy liquid is output through the heat preservation melting furnace 4. Subsequently, the injector 606 injects it into the cavity under high pressure through the injection hole 604, and the gas is discharged through the exhaust hole 605. Step 2: The blower pump 22 works continuously. The air flow is sprayed into the first air duct 26 through the nozzle 13, then passes through the guide rod 29 into the guide groove 28 and flows through the second air duct 27. The high-speed flow of the air flow in the first air duct 26 takes away the high temperature inside the moving mold 603, and the high-speed flow of the air flow in the second air duct 27 takes away the high temperature inside the fixed mold 601, realizing the auxiliary heat dissipation of the fixed mold 601 and the moving mold 603. Subsequently, the air flow is discharged from the outlet end of the second air duct 27. Step 3: Mold opening and ejection. The telescopic cylinder 602 retracts to open the mold. When the connecting plate 9 abuts against the limit stop block 122, the connecting plate 9 pushes the ejector rod 8 and the ejector block 12 to eject the casting. The limit rod 17 slides in the limit groove 16 to force the ejector block 12 to move linearly. The high-speed air flow is conducted into the air guide pipe 20 by the blower pump 22, then flows through the three-way valve 19 and the linkage pipe 18 and is introduced into the diversion pipe 131 and sprayed out from the nozzle 13 as high-speed air flow. When the ejector block 12 ejects, the nozzle 13 sprays compressed air between the part and the mold cavity, quickly destroying the local vacuum and greatly reducing the ejection resistance. Step 4: Space cleaning. The cleaning component 34 is activated by the electric control box 33 according to the preset program after receiving the mold opening in-place signal and is started by the high-pressure air pump 347. The air is extracted, and most of the gas in the main passage directly flows to the end of the high-pressure air pipe 344, passes through the connecting disc 342, and finally is sprayed out through the air jet nozzle 343 to clean the mold cavity.

[0030] The working process of this application is as follows: First, the three-way valve 19 is controlled to connect the liquid guide pipe 21 and the linkage pipe 18, so that the mold release agent in the storage oil tank 24 is conducted into the liquid guide pipe 21 by the oil pump 25, then introduced into the diversion pipe 131 and sprayed out from the nozzle 13, thus realizing the spraying of the mold release agent in the mold cavity. Subsequently, the movable mold 603 is pushed by the telescopic cylinder 602 to close with the fixed mold 601 to form a precision ruler handle cavity. The guide rod 29 and the guide groove 28 are accurately aligned, and the gas circuit is pre-connected. The zinc alloy liquid is output through the heat preservation melting furnace 4. Subsequently, the injector 606 injects it into the cavity at high pressure through the injection hole 604, and the gas is discharged through the exhaust hole 605. The fan pump 22 continues to work, and the air flow is sprayed into the first air duct 26 through the nozzle 13. Then, it passes through the guide rod 29 into the guide groove 28 and flows through the second air duct 27. The high-speed flow of the air in the first air duct 26 takes away the high temperature inside the movable mold 603, and the high-speed flow of the air in the second air duct 27 takes away the high temperature inside the fixed mold 601, realizing the auxiliary heat dissipation of the fixed mold 601 and the movable mold 603. Subsequently, the air flow is discharged from the air outlet end of the second air duct 27. The mold is opened and the casting is ejected. The telescopic cylinder 602 retracts to open the mold. When the connecting plate 9 abuts against the limit stop block 122, the connecting plate 9 pushes the ejector rod 8 and the ejector block 12 to eject the casting. The limit rod 17 slides in the limit groove 16 to force the ejector block 12 to move linearly. The high-speed air flow is conducted into the air guide pipe 20 by the fan pump 22, then flows through the three-way valve 19 and the linkage pipe 18 and is introduced into the diversion pipe 131 and sprayed out as high-speed air flow from the nozzle 13. When the ejector block 12 ejects, the nozzle 13 sprays compressed air between the part and the mold cavity, quickly breaking the local vacuum and greatly reducing the ejection resistance. The above is the working principle of the zinc alloy die-casting equipment and its processing method for machining the ruler handle of the hardware tool.

Claims

1. A zinc alloy die-casting device for processing the handle of a hardware tool and measuring tool, comprising a base (1), characterized in that: At the center of the top of the base (1), a die-casting chamber (2) is provided. Inside the die-casting chamber (2), a fixed table (3) is provided. On one side of the die-casting chamber (2), a heat-preserving melting furnace (4) is provided. On one side of the heat-preserving melting furnace (4), a discharge port (5) is provided. Inside the die-casting chamber (2), a die pressing mechanism (6) is provided. On one side of the die pressing mechanism (6), an ejection assembly (7) is provided. The die pressing mechanism (6) includes a fixed die (601), a telescopic cylinder (602), a movable die (603), a feeding hole (604), an exhaust hole (605) and a shot sleeve (606). On one side of the fixed table (3), the fixed die (601) is provided. On the side of the fixed table (3) away from the fixed die (601), the telescopic cylinder (602) is fixedly connected. The telescopic end of the telescopic cylinder (602) is fixedly connected with the movable die (603). The movable die (603) matches the fixed die (601). On one side of the fixed die (601), the feeding hole (604) is provided. On one side of the feeding hole (604), the shot sleeve (606) is communicated. On one side of the fixed die (601), the exhaust hole (605) is provided.

2. The zinc alloy die-casting equipment for processing the ruler handle of hardware tools according to claim 1, characterized in that: The ejection assembly (7) includes a through groove (701), ejector rods (8), a connecting plate (9), springs (10), a rotating head (11) and a top block (12). On one side of the movable die (603), the through grooves (701) are arranged. Inside the through grooves (701), the ejector rods (8) are penetrated and connected. One end of the ejector rods (8) extends to the outside of the side of the movable die (603) away from the fixed die (601), and the end of the ejector rods (8) is connected with the connecting plate (9). Between the connecting plate (9) and the ejector rods (8), they are movably connected through bearings. On one end of the connecting plate (9), the springs (10) are arranged. The ends of the springs (10) away from the connecting plate (9) are connected with the movable die (603), and the springs (10) are respectively sleeved on the outer walls of the ejector rods (8). The ends of the ejector rods (8) away from the connecting plate (9) are fixedly connected with the rotating head (11). One end of the rotating head (11) is movably connected with the top block (12) through a bearing.

3. A zinc alloy die-casting device for processing the handle of a hardware tool and measuring tool, characterized in that: The surface of the top block (12) is in the same straight line as the inner wall of the cavity of the movable die (603), and at the edge of the top block (12), a sealing ring (121) is provided. The fixed end of the telescopic cylinder (602) is fixedly connected with a limit stop block (122). The limit stop block (122) is arranged on one side of the connecting plate (9). At the edge of the rotating head (11), nozzles (13) are arranged. Inside the center of the ejector rods (8), a diversion pipe (131) is penetrated and connected. The diversion pipe (131) is communicated with the nozzles (13).

4. A zinc alloy die-casting device for processing the handle of a metalworking tool and measuring tool, characterized in that: The surface of the ejector rod (8) is provided with a threaded groove (14). The inner wall of the middle part of the through groove (701) is fixedly connected with a threaded cylinder (15). The ejector rod (8) penetrates through the threaded cylinder (15), and the threaded groove (14) is in threaded connection with the threaded cylinder (15). The inner walls of the moving die (603) near both sides of the through groove (701) are provided with limiting grooves (16). Both inner walls of the ejector block (12) are fixedly connected with limiting rods (17), and the limiting rods (17) are embedded in the limiting grooves (16).

5. A zinc alloy die-casting device for processing the handle of a hardware tool and measuring tool, characterized in that: One side of the connecting plate (9) is provided with a linkage pipe (18). The linkage pipe (18) is connected with the diversion pipe (131) through a rotary joint, and multiple groups of the diversion pipes (131) are interconnected. One end of one side of the linkage pipe (18) is respectively connected with an air guide pipe (20) and a liquid guide pipe (21) through a three-way valve (19), and the air guide pipe (20) and the liquid guide pipe (21) are arranged oppositely. One side of the telescopic air cylinder (602) is provided with a blower pump (22), and the air outlet end of the blower pump (22) is communicated with the air guide pipe (20).

6. A zinc alloy die-casting device for processing the handle of a hardware tool and measuring tool, characterized in that: One side of the die casting chamber (2) is provided with a fixing frame (23). The top of the fixing frame (23) is provided with an oil storage tank (24). The end of the liquid guide pipe (21) far away from the linkage pipe (18) is communicated with the oil storage tank (24), and an oil pump (25) is arranged in the middle of the liquid guide pipe (21).

7. A zinc alloy die-casting device for processing the handle of a hardware tool and measuring tool, characterized in that: The inside of the moving die (603) is provided with a first air duct (26). The first air duct (26) is communicated with the through groove (701), and the connection part of the first air duct (26) and the through groove (701) is arranged on one side of the nozzle (13). The inside of one side of the fixed die (601) is provided with a second air duct (27), and the second air duct (27) penetrates through the fixed die (601). Guide grooves (28) are arranged in a row at the edge of one side of the fixed die (601), and the guide grooves (28) are distributed at the upper and lower ends of the fixed die (601). The guide grooves (28) are communicated with the second air duct (27). One side edge of the moving die (603) is connected with a guide rod (29), and the guide rod (29) is tubular. One end of the guide rod (29) is communicated with the first air duct (26), and the guide rod (29) corresponds to the guide groove (28).

8. A zinc alloy die-casting device for processing the handle of a hardware tool and measuring tool, characterized in that: Both side edges of the moving die (603) are fixedly connected with electric telescopic rods (30). One end of the electric telescopic rods (30) is connected with a pulling block (31). A trigger switch (32) is arranged at the edge of the connecting plate (9), and the trigger switch (32) is arranged corresponding to the pulling block (31). One side of the fixing frame (23) is provided with an electric control box (33).

9. A zinc alloy die-casting device for processing the handle of a metalworking tool and measuring tool, characterized in that: A cleaning component (34) is provided at the top of the die-casting chamber (2). The cleaning component (34) includes an electric push rod (341), a connecting plate (342), a jet nozzle (343), a high-pressure air pipe (344), a shunt pipe (345), a drying and filtering box (346), and a high-pressure air pump (347). An electric push rod (341) is fixedly connected to the inner wall of the top of the die-casting chamber (2). The bottom end of the electric push rod (341) is connected to a connecting plate (342). Jet nozzles (343) are arranged on the surface of the connecting plate (342). One end of the connecting plate (342) is communicated with a high-pressure air pipe (344). A shunt pipe (345) is communicated with the middle of the high-pressure air pipe (344), and the shunt pipe (345) penetrates through the fixed die (601). One end of the top of the shunt pipe (345) is communicated with a drying and filtering box (346). The end of the high-pressure air pipe (344) is connected to a high-pressure air pump (347).

10. A processing method for a zinc alloy die-casting device for processing the handle of a metalworking tool and measuring tool, which applies a zinc alloy die-casting device for processing the handle of a metalworking tool and measuring tool according to any one of claims 1-9, characterized in that: The processing method includes the following steps: Step 1: Mold closing and forming. First, control the connection between the liquid guide pipe (21) and the linkage pipe (18) through the three-way valve (19), so that the release agent in the storage oil tank (24) is conducted into the liquid guide pipe (21) by the oil pump (25), then introduced into the diversion pipe (131), and sprayed out from the nozzle (13), thereby realizing the spraying of the release agent in the mold cavity. Subsequently, the moving die (603) is pushed by the telescopic cylinder (602) to close with the fixed die (601) to form a precision ruler handle cavity. The guide rod (29) and the guide groove (28) are accurately aligned, and the gas circuit is pre-connected. The zinc alloy liquid is output through the heat preservation melting furnace (4). Subsequently, the injector (606) injects the liquid into the cavity at high pressure through the injection hole (604), and the gas is discharged through the exhaust hole (605). Step 2: The fan pump (22) works continuously. The air flow is sprayed into the first air duct (26) through the nozzle (13), and then flows into the guide groove (28) through the guide rod (29) and then flows through the second air duct (27). The high-speed flow of the air flow in the first air duct (26) takes away the high temperature inside the moving die (603), and the high-speed flow of the air flow in the second air duct (27) takes away the high temperature inside the fixed die (601), realizing the auxiliary heat dissipation of the fixed die (601) and the moving die (603). Subsequently, the air flow is discharged from the air outlet end of the second air duct (27). Step 3: Mold opening and ejecting. The telescopic cylinder (602) retracts to open the mold. When the connecting plate (9) abuts against the limit block (122), the connecting plate (9) pushes the ejector rod (8) and the ejector block (12) to eject the casting. The limit rod (17) slides in the limit groove (16), forcing the ejector block (12) to move linearly. The high-speed air flow is conducted into the air guide pipe (20) by the fan pump (22), then flows through the three-way valve (19) and the linkage pipe (18), and then is introduced into the diversion pipe (131) and sprayed out from the nozzle (13) as high-speed air flow. When the ejector block (12) ejects, the nozzle (13) sprays compressed air between the part and the mold cavity, quickly destroying the local vacuum and greatly reducing the ejection resistance. Step 4: Space cleaning. The cleaning component (34) is activated by the electric control box (33) according to a preset program, started by the high-pressure air pump (347), draws air to the end of the high-pressure air pipe (344) through the main passage, passes into the connecting plate (342), and finally sprays out through the air jet nozzle (343) to clean the mold cavity.

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