Intelligent temperature control precision die-casting mold

Abstract

The utility model relates to the field of precision die casting die manufacturing, especially intelligent temperature control's precision die casting die, including die casting machine, upper die and lower die etc.

Description

Technical Field

[0001] This utility model relates to the field of precision die-casting mold manufacturing, and in particular to a precision die-casting mold with intelligent temperature control. Background Technology

[0002] Die casting is a metal forming process that injects molten metal into a precision mold cavity under high pressure and high speed, and then cools it under high pressure to form the final product. It boasts advantages such as high production efficiency, good dimensional accuracy, and excellent surface quality, and is widely used in the automotive, electronics, and aerospace industries. During die casting, mold temperature is a critical parameter affecting product quality: too low a temperature leads to poor fluidity of the molten metal, easily causing defects such as cold shuts and under-casting; too high a temperature may exacerbate mold thermal fatigue, shorten mold life, and increase the risk of internal porosity and shrinkage in the product. Therefore, precise control of mold temperature is essential for achieving high-quality die casting.

[0003] In existing precision die casting technology, the mold heating temperature is usually preset according to the melting point of the metal material and process requirements, and maintained at a constant temperature by an external heating device. Although this fixed temperature control mode can avoid excessive energy consumption, it has significant limitations: on the one hand, the actual mold temperature is affected by many factors such as the environment, cooling efficiency, and the filling speed of the molten metal, resulting in a dynamic deviation from the set heating temperature; on the other hand, traditional heating methods are difficult to achieve a uniform temperature distribution in the mold, leading to local overheating or underheating, which in turn causes problems such as product size fluctuations, surface defects, or uneven internal structure.

[0004] The difference between the actual temperature and the set temperature of the mold can easily cause temperature fluctuations. Especially in continuous production, heat accumulation or insufficient cooling of the mold can lead to a decrease in process stability, which directly affects the dimensional accuracy, mechanical properties and yield of precision die-cast parts. Utility Model Content

[0005] To overcome the drawbacks of temperature fluctuations affecting die-casting quality, this invention provides a precision die-casting mold with intelligent temperature control, aiming to solve the aforementioned shortcomings.

[0006] A precision die-casting mold with intelligent temperature control includes a die-casting machine, an upper mold, and a lower mold. The die-casting machine is equipped with the upper mold and the lower mold, which are fitted together on one side. A mounting shell is connected to the front side of both the upper mold and the lower mold. A guide rod is slidably connected inside the mounting shell. A temperature sensor is installed at the rear end of the guide rod. The temperature sensor is fitted to the upper mold and the lower mold. An intermittent component that pushes the guide rod to slide back and forth is provided on the front side of both the upper mold and the lower mold.

[0007] Optionally, the intermittent assembly includes a fixed frame, which is connected to the front sides of both the upper and lower molds. The fixed frame is symmetrically arranged with the mounting housing. An extrusion plate is connected to the front end of the fixed frame and extends toward the mounting housing. Contact rods are connected to both the upper and lower ends of the front part of the guide rod. A return spring is sleeved on the front part of the guide rod. One end of the return spring is connected to the mounting housing, and the other end is connected to the contact rod. The extrusion plate and the guide rod are in a pressing fit. An inclined surface is provided on the rear side of the extrusion plate.

[0008] Optionally, a protective pad is attached to the end of the extrusion plate facing the mounting housing.

[0009] Optionally, a heat insulation sleeve is provided between the contact rod and the mounting housing. One end of the heat insulation sleeve is connected to the contact rod, and the other end is connected to the mounting housing. The heat insulation sleeve also wraps around the return spring.

[0010] Optionally, the mounting housing has an exhaust vent at its bottom.

[0011] Optionally, the outer ring of the contact rod is rotatably connected to a roller, and the roller is in rolling connection with the extrusion plate.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. By fixing the temperature sensor to the guide rod, the sensor slides with the guide rod and is stably attached to the mold surface, thereby realizing real-time and accurate monitoring of the mold temperature, reducing the impact of temperature fluctuations and ensuring the quality of die casting.

[0014] 2. By using the squeezing action of the inclined surface of the extrusion plate and the contact rod, the mold closing action is transformed into the automatic displacement of the temperature measurement module, thereby realizing the synchronous linkage between temperature acquisition and the die-casting process, and achieving the goal of improving the automation level of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram showing the connection relationship between the upper and lower molds of this utility model.

[0017] Figure 3 This is a cross-sectional view of the installation structure of the contact rod and guide rod of this utility model.

[0018] Figure 4 This is a schematic diagram of the installation structure of the fixing frame and pressure plate of this utility model.

[0019] In the above attached diagram: 1: Die-casting machine, 2: Upper mold, 3: Lower mold, 4: Mounting housing, 5: Temperature sensor, 6: Guide rod, 7: Contact rod, 8: Return spring, 9: Fixing frame, 10: Extrusion plate, 11: Protective pad, 12: Heat insulation sleeve, 13: Vent hole, 14: Roller. Detailed Implementation

[0020] References to embodiments herein mean that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] Example: A precision die-casting mold with intelligent temperature control, such as Figures 1-4 As shown, the die casting machine includes a die casting machine 1, an upper mold 2, a lower mold 3, a mounting housing 4, a temperature sensor 5, a guide rod 6, and an intermittent assembly. The die casting machine 1 is provided with an upper mold 2 and a lower mold 3, which are fitted together on one side. The mounting housing 4 is fixedly connected to the front side of both the upper mold 2 and the lower mold 3. The guide rod 6 is slidably connected inside the mounting housing 4. The temperature sensor 5 is fixedly installed at the rear end of the guide rod 6. The temperature measuring surface of the temperature sensor 5 is in contact with the corresponding surfaces of the upper mold 2 and the lower mold 3. The temperature sensor 5 is electrically connected to the controller of the die casting machine 1 through a signal line. The front side of both the upper mold 2 and the lower mold 3 is provided with an intermittent assembly for driving the guide rod 6 to slide.

[0022] like Figures 2-4 As shown, the intermittent assembly includes a contact rod 7, a return spring 8, a fixing frame 9, and an extrusion plate 10. The front sides of the upper mold 2 and the lower mold 3 are both fixedly connected to the fixing frame 9. The fixing frame 9 is symmetrically arranged with the mounting housing 4. The front end of the fixing frame 9 is fixedly connected to the extrusion plate 10, which extends towards the mounting housing 4. The front ends of the guide rod 6 are both fixedly connected to the contact rod 7. The front part of the guide rod 6 is fitted with the return spring 8. One end of the return spring 8 is fixedly connected to the mounting housing 4, and the other end is fixedly connected to the guide rod 6. The rear side of the extrusion plate 10 is provided with an inclined surface, and the extrusion plate 10 forms an extrusion fit with the contact rod 7 through the inclined surface.

[0023] like Figure 4 As shown, it also includes a protective pad 11. The end of the extrusion plate 10 facing the mounting housing 4 is connected to the protective pad 11. The protective pad 11 is made of high temperature resistant rubber material and directly covers the sharp parts of the edge of the extrusion plate 10.

[0024] like Figure 4As shown, it also includes a heat insulation sleeve 12. A heat insulation sleeve 12 is provided between the contact rod 7 and the mounting housing 4. One end of the heat insulation sleeve 12 is connected to the contact rod 7, and the other end is connected to the mounting housing 4. The heat insulation sleeve 12 also wraps around the reset spring 8.

[0025] like Figure 3 As shown, the bottom of the mounting housing 4 has an exhaust hole 13. The exhaust hole 13 eliminates the resistance caused by air compression when the guide rod 6 slides, ensuring that the thrust of the reset spring 8 is stably transmitted to the temperature sensor 5, thereby improving the response speed of the temperature measurement module.

[0026] like Figure 3 As shown, it also includes a roller 14, and the outer ring of the contact rod 7 is rotatably connected to the roller 14, which makes rolling contact with the inclined surface of the extrusion plate 10.

[0027] When the die-casting process begins, the operator starts the control program of the die-casting machine 1. The upper mold 2 and the lower mold 3 move closer together in the mold-closing direction under the drive of the drive device. As the mold cavity closing process progresses, the fixing frame 9 carries the extrusion plate 10 and moves it towards the mounting housing 4. The inclined structure on the rear side of the extrusion plate 10 gradually contacts the front end of the contact rod 7. Under the guidance of the inclined surface, the continuous thrust of the extrusion plate 10 is converted into the horizontal displacement of the contact rod 7. After being pressed, the contact rod 7 slides backward along the inner wall of the mounting housing 4, simultaneously driving the guide rod 6 to move backward. The temperature sensor 5 then comes into close contact with the cavity surfaces of the upper mold 2 and the lower mold 3, collecting mold surface temperature data in real time and transmitting it to the control center.

[0028] During this process, the displacement of contact rod 7 compresses return spring 8, putting it into an energy storage state. The controller of die-casting machine 1 compares the received temperature data with the preset process parameters. If the actual temperature deviates from the target range, it immediately activates the heating / cooling system built into the mold, achieving precise control by dynamically adjusting the mold temperature. When the die-casting process enters the holding pressure stage, temperature sensor 5 continuously monitors the thermal state of the mold, ensuring that the molten metal completes filling and solidification in a stable thermal environment.

[0029] After the die-casting cycle is completed, the upper mold 2 and lower mold 3 separate in opposite directions under the action of the drive device. The fixing frame 9 then carries the extrusion plate 10 back to its initial position. The extrusion plate 10 disengages from the contact rod 7, and the return spring 8 releases its stored elastic potential energy, pushing the contact rod 7 forward to reset. The contact rod 7 drives the temperature sensor 5 to move forward synchronously through the guide rod 6, eventually completely separating the temperature sensor 5 from the temperature measuring surface of the mold and returning it to its initial standby position. At this time, the operator can open the mold cavity to remove the casting and wait for the next die-casting cycle.

[0030] Throughout the entire equipment operation cycle, the protective pad 11 at the end of the extrusion plate 10 effectively isolates the operator from the risk of contact with moving parts, preventing accidental collisions between the operator and the extrusion plate 10 during casting handling. The heat insulation sleeve 12 always encloses the return spring 8, preventing the spring material performance from degrading due to high temperatures and preventing foreign objects from entering by sealing the spring's movement space. When the temperature sensor 5 slides, the vent 13 at the bottom of the mounting housing 4 continuously balances the internal and external air pressure difference, ensuring that the elastic force of the return spring 8 is stably transmitted to the temperature sensor 5. The roller 14 structure in the contact area between the contact rod 7 and the extrusion plate 10 converts sliding friction into rolling friction, significantly reducing frictional resistance and extending the service life of the components.

[0031] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made to the present invention without departing from the principles and spirit of the present invention as defined by the claims. Therefore, the detailed description of the embodiments in this disclosure is for explanation only and not for limiting the present invention, but rather the scope of protection is defined by the content of the claims.

Claims

1. A precision die-casting mold with intelligent temperature control, characterized in that: The die casting machine includes a die casting machine (1), an upper mold (2), and a lower mold (3). The die casting machine (1) is provided with the upper mold (2) and the lower mold (3). The upper mold (2) and the lower mold (3) are fitted together on one side. The front side of the upper mold (2) and the lower mold (3) are both connected to a mounting shell (4). A guide rod (6) is slidably connected inside the mounting shell (4). A temperature sensor (5) is installed at the rear end of the guide rod (6). The temperature sensor (5) is fitted together with the upper mold (2) and the lower mold (3). The front side of the upper mold (2) and the lower mold (3) is provided with an intermittent component that pushes the guide rod (6) to slide back and forth.

2. A precision die-casting mold with intelligent temperature control according to claim 1, characterized in that: The intermittent assembly includes a fixed frame (9), which is connected to the front of both the upper mold (2) and the lower mold (3). The fixed frame (9) is symmetrically arranged with the mounting housing (4). An extrusion plate (10) is connected to the front end of the fixed frame (9). The extrusion plate (10) extends toward the mounting housing (4). Contact rods (7) are connected to both the upper and lower ends of the front of the guide rod (6). A return spring (8) is sleeved on the front of the guide rod (6). One end of the return spring (8) is connected to the mounting housing (4), and the other end is connected to the guide rod (6). The extrusion plate (10) and the contact rod (7) are pressed together. An inclined surface is provided on the rear side of the extrusion plate (10).

3. A precision die-casting mold with intelligent temperature control according to claim 2, characterized in that: The end of the extrusion plate (10) facing the mounting housing (4) is connected to a protective pad (11).

4. A precision die-casting mold with intelligent temperature control according to claim 3, characterized in that: A heat insulation sleeve (12) is provided between the contact rod (7) and the mounting housing (4). One end of the heat insulation sleeve (12) is connected to the contact rod (7), and the other end is connected to the mounting housing (4). The heat insulation sleeve (12) wraps around the reset spring (8).

5. A precision die-casting mold with intelligent temperature control according to claim 4, characterized in that: The mounting housing (4) has an exhaust hole (13) at the bottom.

6. A precision die-casting mold with intelligent temperature control according to claim 5, characterized in that: The outer ring of the contact rod (7) is rotatably connected to a roller (14), and the roller (14) is in rolling connection with the extrusion plate (10).

Images