Quenching heat treatment method and device for injection punch of die casting machine

Abstract

The application belongs to quenching technical field, especially relates to a quenching heat treatment device for a die casting machine injection punch, which comprises a base, a heating box and an oil tank are fixed on the base, an outlet pipe and an inlet pipe are arranged on the outer wall of the heating box, a preheating tank is fixedly connected to the end of the inlet pipe, a plurality of heat conduction rods are fixedly inserted into the outer wall of the preheating tank and arranged vertically, the lower end of the heat conduction rod extends into the oil tank, and the heat conduction rod is used for conducting the heat in the oil tank out of the preheating tank to preheat the die casting machine injection punch in the preheating tank; a quenching heat treatment method for a die casting machine injection punch, which comprises the following steps: S1, storing the die casting machine injection punch in the preheating tank. The heat in the oil liquid used for cooling the die casting machine injection punch in the oil tank is conducted out of the oil tank through the heat conduction rod, the cooling of the oil liquid is completed, the die casting machine injection punch is preheated through the heat, and the required heat for heating the die casting machine injection punch by the heating box is reduced, and the energy consumption is reduced.

Description

Technical Field

[0001] This invention relates to the field of quenching technology, and in particular to a quenching heat treatment method and apparatus for a die-casting machine injection punch. Background Technology

[0002] The injection punch is one of the core components of a die-casting machine, used to inject molten metal into a mold to form parts. Its function is to eject heated, molten metal from a nozzle and shape it under high pressure within the mold cavity to form various parts and components for electrical appliances, automobiles, and machinery. It is widely used, especially in aluminum alloy die-casting production. The injection punch is generally made of alloy steel, and its surface requires high-precision grinding and surface treatment to ensure accuracy, wear resistance, and corrosion resistance. To further improve its hardness and wear resistance, the injection punch needs to undergo quenching treatment.

[0003] The existing publication number CN204958985U discloses an oil tank device for quenching treatment, including an oil tank containing quenching oil and an oxygen barrier layer disposed within the oil tank. This oxygen barrier layer is composed of floats floating on the surface of the quenching oil; each float includes a float body and a floating edge disposed on the side of the float body. Placing the oxygen barrier layer composed of floats within the oil tank ensures that the quenching oil is completely covered by the floating floats on the oil surface, effectively isolating it from oxygen. Because the floats block oxygen, the oil cannot directly contact the air, thus preventing the oil's temperature from rapidly dissipating into the air, and preventing high-temperature oil from affecting the cooling effect on the workpiece.

[0004] To address the aforementioned issues, we propose a quenching heat treatment method and apparatus for the injection punch of a die-casting machine. Summary of the Invention

[0005] The purpose of this invention is to solve the problem in the prior art where an oil tank is set up to cool the workpiece, but the float in the oil tank blocks oxygen and the oil cannot directly contact the air. Therefore, the temperature of the oil will not be quickly dissipated into the air, and the high temperature of the oil will affect the cooling effect of the workpiece. Therefore, a quenching heat treatment device for the injection punch of a die casting machine is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a quenching heat treatment device for a die-casting machine injection punch, comprising a base, a heating box and an oil tank fixed on the base, an outlet pipe and an inlet pipe provided on the outer wall of the heating box, a preheating tank fixedly connected to the end of the inlet pipe, and a plurality of vertically arranged heat-conducting rods fixedly inserted into the outer wall of the preheating tank, the lower ends of the heat-conducting rods extending into the oil tank, and the heat in the oil tank being discharged through the heat-conducting rods to preheat the die-casting machine injection punch in the preheating tank.

[0007] In the above-mentioned quenching heat treatment device for the injection punch of a die-casting machine, a swaying frame is provided in the oil tank, the end of the swaying frame extends through the inner wall of the oil tank to the outer side of the oil tank, a moving rod is slidably inserted into the outer wall of the oil tank, a telescopic spring is sleeved on the outer wall of the moving rod, the two ends of the telescopic spring are fixedly connected to the outer wall of the moving rod and the outer wall of the oil tank respectively, a baffle is slidably inserted into the discharge pipe, a return spring is sleeved on the outer wall of the baffle, the two ends of the return spring are fixedly connected to the outer wall of the baffle and the lower side wall of the discharge pipe respectively, a motor is fixedly connected to the base, a half gear is fixedly connected to the drive end of the motor, the outer wall of the baffle is provided with serrations that mesh with the half gear, a right-angled triangle is fixedly connected to the outer wall of the baffle away from the serrations, the end of the moving rod contacts the inclined surface of the right-angled triangle, and the cross-sectional length of the right-angled triangle gradually decreases from top to bottom.

[0008] In the above-mentioned quenching heat treatment device for the injection punch of a die-casting machine, a rotating plate is rotatably connected inside the preheating tank. An arc-shaped block in contact with the upper end of a heat-conducting rod is fixedly connected to the lower end of the rotating plate. The arc-shaped block is made of copper. A connecting plate is rotatably connected to the upper side wall of the right end of the arc-shaped block. A vertical rod is slidably inserted into the preheating tank. The lower end of the vertical rod is rotatably connected to the upper end of the connecting plate. A rectangular frame is fixedly connected to the upper end of the vertical rod. A motor is fixedly connected to the outer wall of the base. A rotating rod is fixedly connected to the drive end of the motor. A cylinder with its end located inside the rectangular frame is fixedly connected to the end of the rotating rod. The diameter of the cylinder is the same as the distance between the top wall and the bottom wall of the rectangular frame.

[0009] In the above-mentioned quenching heat treatment device for the injection punch of a die-casting machine, a fixed plate is fixedly connected to the outer wall of the preheating tank, a telescopic rod is fixedly connected to the end of the fixed plate, a blocking plate is fixedly connected to the driving end of the telescopic rod, and the blocking plate is slidably inserted into the end of the discharge pipe.

[0010] In the above-mentioned quenching heat treatment device for the injection punch of a die-casting machine, an oil pump is fixedly connected to the outer wall of the oil tank, the input end of the oil pump is connected to the inside of the oil tank, and an oil delivery pipe is fixedly connected to the output end of the oil pump, with the end of the oil delivery pipe extending into the inside of the oil tank.

[0011] A quenching heat treatment method for a die-casting machine injection punch includes the following steps:

[0012] S1, store the die-casting machine injection punch in the preheating tank;

[0013] S2, the drive end of the telescopic rod retracts, causing the baffle to move away from the discharge pipe, opening the discharge pipe, and allowing the die-casting machine's injection punch to slide from the discharge pipe into the heating chamber for heating;

[0014] S3, the heated die-casting machine injection punch is led out into the discharge pipe. The motor drives the half gear to rotate. When the half gear meshes with the saw teeth, it drives the block plate to move downward, so that the heated die-casting machine injection punch slides down into the oil tank for cooling.

[0015] S4. As the baffle moves down, the right-angled triangle moves down and contacts the moving rod, pushing the moving rod and the shaking frame to move, causing the internal die-casting machine injection punch to shake. The shaking promotes the contact between the oil and the die-casting machine injection punch, accelerating the cooling of the die-casting machine injection punch.

[0016] Compared with existing technologies, the advantages of the quenching and heat treatment device for the injection punch of this die-casting machine are:

[0017] This invention removes heat from the oil in the oil tank used to cool the injection punch of the die-casting machine through a heat-conducting rod, thereby cooling the oil and preheating the injection punch of the die-casting machine. This reduces the amount of heat required by the heating box to heat the injection punch of the die-casting machine, thus reducing energy consumption. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the quenching heat treatment device for the injection punch of a die-casting machine proposed in this invention.

[0019] Figure 2 This is an enlarged view of part A of the quenching heat treatment device for the injection punch of a die-casting machine proposed in this invention;

[0020] Figure 3 This is an enlarged view of part B of the quenching heat treatment device for the injection punch of a die-casting machine proposed in this invention;

[0021] Figure 4 This is an enlarged view of part C of the quenching heat treatment device for the injection punch of a die-casting machine proposed in this invention.

[0022] In the diagram: 1. Base, 2. Heating box, 3. Oil tank, 4. Preheating tank, 5. Discharge pipe, 6. Heat-conducting rod, 7. Feed pipe, 8. Arc block, 9. Rotating plate, 10. Connecting plate, 11. Motor, 12. Rotating rod, 13. Cylinder, 14. Vertical rod, 15. Rectangular frame, 16. Telescopic rod, 17. Blocking plate, 18. Motor, 19. Half gear, 20. Baffle, 21. Return spring, 22. Right angle triangle plate, 23. Moving rod, 24. Telescopic spring, 25. Shaking frame, 26. Oil supply pipe, 27. Oil pump. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0024] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0025] Reference Figures 1-4 A quenching heat treatment device for a die-casting machine injection punch includes a base 1, on which a heating box 2 and an oil tank 3 are fixed. The outer wall of the heating box 2 is provided with a discharge pipe 5 and a feed pipe 7. The end of the feed pipe 7 is fixedly connected to a preheating tank 4. Multiple vertically arranged heat-conducting rods 6 are fixedly inserted into the outer wall of the preheating tank 4. The lower ends of the heat-conducting rods 6 extend into the oil tank 3, and the heat in the oil tank 3 is conducted out through the heat-conducting rods 6 to preheat the die-casting machine injection punch in the preheating tank 4. A swaying frame 25 is provided in the oil tank 3. The end of the swaying frame 25 extends through the inner wall of the oil tank 3 to the outer side of the oil tank 3. A moving rod 23 is slidably inserted into the outer wall of the oil tank 3. A telescopic spring 24 is sleeved on the outer wall of the moving rod 23. The two ends of the telescopic spring 24 are fixedly connected to the outer wall of the moving rod 23 and the outer wall of the oil tank 3, respectively. A baffle 20 is slidably inserted on the discharge pipe 5. A return spring 21 is sleeved on the outer wall of the baffle 20. The two ends of the return spring 21 are fixedly connected to the outer wall of the baffle 20 and the lower side wall of the discharge pipe 5, respectively. A motor 18 is fixedly connected on the base 1. A half gear 19 is fixedly connected to the drive end of the motor 18. The outer wall of the baffle 20 is provided with serrations that mesh with the half gear 19. A right-angled triangle plate 22 is fixedly connected to the outer wall of the baffle 20 away from the serrations. The end of the moving rod 23 contacts the inclined surface of the right-angled triangle plate 22. The cross-sectional length of the right-angled triangle plate 22 gradually decreases from top to bottom.

[0026] A rotating plate 9 is rotatably connected inside the preheating tank 4. An arc-shaped block 8, made of copper, is fixedly connected to the lower end of the rotating plate 9, contacting the upper end of the heat-conducting rod 6. A connecting plate 10 is rotatably connected to the upper right side wall of the arc-shaped block 8. A vertical rod 14 is slidably inserted into the preheating tank 4. The lower end of the vertical rod 14 is rotatably connected to the upper end of the connecting plate 10. A rectangular frame 15 is fixedly connected to the upper end of the vertical rod 14. A motor 11 is fixedly connected to the outer wall of the base 1. A rotating rod 12 is fixedly connected to the drive end of the motor 11. A cylinder 13, whose end is located within the rectangular frame 15, is fixedly connected to the end of the rotating rod 12. The diameter of the cylinder 13 is the same as the distance between the top and bottom walls of the rectangular frame 15. Heat in the oil is transferred through the heat-conducting rod. 6. Heat the arc-shaped block 8 by starting the motor 11, which drives the rotating rod 12 and the cylinder 13 to rotate. When the cylinder 13 moves from bottom to top, it pushes the rectangular frame 15 to move upward. When the cylinder 13 rotates from top to bottom, it pushes the rectangular frame 15 to move downward, thus realizing the up and down movement of the vertical rod 14. When the vertical rod 14 moves upward, it pulls the end of the arc-shaped block 8 to rotate upward through the connecting plate 10, and the die-casting machine injection punch slides to the side of the feed pipe 7. When the vertical rod 14 moves downward, it pushes the right end of the arc-shaped block 8 to rotate downward through the connecting plate 10. Through the above process, the arc-shaped block 8 swings back and forth, and the die-casting machine injection punch slides back and forth, achieving full contact with the arc-shaped block 8 and completing the full preheating of the die-casting machine injection punch.

[0027] A fixing plate is fixedly connected to the outer wall of the preheating tank 4. A telescopic rod 16 is fixedly connected to the end of the fixing plate. A blocking plate 17 is fixedly connected to the driving end of the telescopic rod 16. The blocking plate 17 is slidably inserted into the end of the feed pipe 7.

[0028] An oil pump 27 is fixedly connected to the outer wall of the oil tank 3. The input end of the oil pump 27 is connected to the inside of the oil tank 3. The output end of the oil pump 27 is fixedly connected to an oil delivery pipe 26. The end of the oil delivery pipe 26 extends into the inside of the oil tank 3. The oil pump 27 pumps the oil in the oil tank 3 into the oil delivery pipe 26, and then pumps it back into the oil tank 3 from the oil delivery pipe 26, thereby realizing the flow of the oil and promoting the loss of heat inside the oil.

[0029] A quenching heat treatment method for a die-casting machine injection punch includes the following steps:

[0030] S1, store the die-casting machine injection punch in the preheating tank 4;

[0031] S2, the drive end of the telescopic rod 16 retracts, causing the blocking plate 17 to move away from the feed pipe 7, opening the feed pipe 7, and allowing the die-casting machine injection punch to slide from the feed pipe 7 into the heating box 2 for heating;

[0032] S3, the heated die-casting machine injection punch is discharged into the discharge pipe 5. The motor 18 drives the half gear 19 to rotate. When the half gear 19 meshes with the saw teeth, it drives the baffle 20 to move downward, so that the heated die-casting machine injection punch slides down into the oil tank 3 for cooling.

[0033] S4, as the baffle 20 moves down, the right-angled triangle 22 moves down and contacts the moving rod 23, pushing the moving rod 23 and the shaking frame 25 to move, causing the internal die-casting machine injection punch to shake. The shaking promotes the contact between the oil and the die-casting machine injection punch, accelerating the cooling of the die-casting machine injection punch.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A quenching heat treatment device for a die-casting machine injection punch, comprising a base (1), characterized in that, A heating box (2) and an oil tank (3) are fixed on the base (1). The outer wall of the heating box (2) is provided with a discharge pipe (5) and a feed pipe (7). The end of the feed pipe (7) is fixedly connected to a preheating tank (4). Multiple vertically arranged heat-conducting rods (6) are fixedly inserted into the outer wall of the preheating tank (4). The lower end of the heat-conducting rods (6) extends into the oil tank (3). The heat in the oil tank (3) is discharged through the heat-conducting rods (6) to preheat the die-casting machine injection punch in the preheating tank (4). The oil tank (3) is provided with a shaking frame (25), the end of the shaking frame (25) extends through the inner wall of the oil tank (3) to the outer side of the oil tank (3), a moving rod (23) is slidably inserted into the outer wall of the oil tank (3), a telescopic spring (24) is sleeved on the outer wall of the moving rod (23), and the two ends of the telescopic spring (24) are fixedly connected to the outer wall of the moving rod (23) and the outer wall of the oil tank (3) respectively. A baffle (20) is slidably inserted into the discharge pipe (5), and a return spring (21) is sleeved on the outer wall of the baffle (20). 1) The two ends of the base (1) are fixedly connected to the outer wall of the baffle (20) and the lower side wall of the discharge pipe (5), respectively. A motor (18) is fixedly connected to the base (1). A half gear (19) is fixedly connected to the drive end of the motor (18). The outer wall of the baffle (20) is provided with a saw tooth that meshes with the half gear (19). A right-angled triangle plate (22) is fixedly connected to the outer wall of the baffle (20) away from the saw tooth. The end of the moving rod (23) is in contact with the inclined surface of the right-angled triangle plate (22). The cross-sectional length of the right-angled triangle plate (22) gradually decreases from top to bottom. A rotating plate (9) is rotatably connected inside the preheating tank (4). An arc-shaped block (8) that contacts the upper end of the heat-conducting rod (6) is fixedly connected to the lower end of the rotating plate (9). The arc-shaped block (8) is made of copper. A connecting plate (10) is rotatably connected to the upper side wall of the right end of the arc-shaped block (8). A vertical rod (14) is slidably inserted on the preheating tank (4). The lower end of the vertical rod (14) is rotatably connected to the upper end of the connecting plate (10). A rectangular frame (15) is fixedly connected to the upper end of the vertical rod (14). A motor (11) is fixedly connected to the outer wall of the base (1). A rotating rod (12) is fixedly connected to the driving end of the motor (11). A cylinder (13) whose end is located inside the rectangular frame (15) is fixedly connected to the end of the rotating rod (12). The diameter of the cylinder (13) is the same as the distance between the top wall and the bottom wall inside the rectangular frame (15).

2. The quenching heat treatment device for the injection punch of a die-casting machine according to claim 1, characterized in that, A fixing plate is fixedly connected to the outer wall of the preheating tank (4), and a telescopic rod (16) is fixedly connected to the end of the fixing plate. A blocking plate (17) is fixedly connected to the driving end of the telescopic rod (16), and the blocking plate (17) is slidably inserted into the end of the feed pipe (7).

3. The quenching heat treatment device for the injection punch of a die-casting machine according to claim 1, characterized in that, An oil pump (27) is fixedly connected to the outer wall of the oil tank (3). The input end of the oil pump (27) is connected to the inside of the oil tank (3). An oil delivery pipe (26) is fixedly connected to the output end of the oil pump (27). The end of the oil delivery pipe (26) extends into the inside of the oil tank (3).

4. A method for quenching heat treatment using the quenching heat treatment apparatus for the die-casting machine injection punch as described in claim 2, characterized in that, The method includes the following steps: S1, store the die-casting machine injection punch in the preheating tank (4); S2, the drive end of the telescopic rod (16) retracts, causing the blocking plate (17) to move away from the feed pipe (7), opening the feed pipe (7), and allowing the die-casting machine injection punch to slide from the feed pipe (7) into the heating box (2) for heating; S3, the heated die-casting machine injection punch is discharged into the discharge pipe (5), the motor (18) drives the half gear (19) to rotate, and when the half gear (19) meshes with the saw tooth, it drives the baffle (20) to move down, so that the heated die-casting machine injection punch slides down into the oil tank (3) for cooling. S4, while the baffle (20) moves down, the right-angled triangle (22) moves down and contacts the moving rod (23), pushing the moving rod (23) and the shaking frame (25) to move, causing the internal die-casting machine injection punch to shake. The shaking promotes the contact between the oil and the die-casting machine injection punch, accelerating the cooling of the die-casting machine injection punch.

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