High-temperature heat pipe die for high-temperature die casting

Abstract

The high-temperature heat pipe mold comprises a base, a movable mold unit and a fixed mold unit, the movable mold unit and the fixed mold unit are installed on the upper end face of the base, and a mold closing driving element is arranged at the end, away from the fixed mold unit, of the movable mold unit and connected with the movable mold unit; wherein the movable mold unit comprises a movable mold, and the fixed mold unit comprises a fixed mold; the mold is characterized in that the movable mold and the fixed mold are both internally provided with heat pipe heat exchange pieces, each heat pipe heat exchange piece comprises a pipe body and a capillary tube interlayer arranged on the inner wall of the pipe body, and working liquid is packaged in the pipe body. The heat pipe heat exchange pieces are installed in the movable mold and the fixed mold, the heat conduction speed of the heat pipe heat exchange pieces is 5-10 times that of traditional resistance heating, and the mold preheating time can be shortened; the heat pipe heat exchange piece can quickly balance the temperature difference of the mold; direct loss of electric energy is avoided, and high-energy-consumption scenes are met; the device can be embedded into a mold, and the temperature field design is optimized.

Description

Technical Field

[0001] The present invention belongs to the technical field of high-temperature molds, and in particular relates to a high-temperature heat pipe mold for high-temperature die casting. Background Art

[0002] With the rapid development of UAV technology and low-altitude economy, the demand for miniaturized aircraft is also increasing. The high-temperature die-casting technology extended from new energy vehicles can be applied in the field of UAVs. At present, in the field of high-temperature thin-wall die-casting technology, the mold temperature is required to be uniform and heat up quickly. The current heating methods of high-temperature molds mainly include resistance heating, induction heating, gas / fuel heating, and microwave / infrared radiation heating. With the continuous development of integrated die-casting UAVs, new energy vehicles and other market fields, the application demand for high-temperature molds is also gradually expanding.

[0003] Among the heating methods for high-temperature molds, resistance heating operates on the principle of generating Joule heat by passing an electric current through a resistance material (such as nickel-chromium alloy, molybdenum wire, etc.). Its advantages include high temperature control accuracy (±1-5°C), making it suitable for precision molds (such as die-casting of aviation turbine blades), good heating uniformity, the ability to adjust the mold temperature field through zoned temperature control, a simple equipment structure, and low maintenance costs. Its disadvantages include low thermal efficiency (approximately 30%-50%), high energy consumption, easy oxidation of the resistance material at high temperatures (for example, molybdenum wire requires inert gas protection above 1000°C), and slow heating speed (large molds require several hours of preheating).

[0004] The principle of induction heating is to use an alternating magnetic field to generate eddy current heating on the mold surface. Its advantages are rapid heating (reaching over 100°C / s in local areas), high thermal efficiency (60%-80%), significant energy savings, and suitability for localized rapid heating of complex molds (such as engine combustion chamber molds). Its disadvantages are poor temperature uniformity, the need for auxiliary heat sources (such as radiation panels), potential interference of high-frequency electromagnetic fields (requiring electromagnetic shielding), large initial equipment investment, and demanding maintenance techniques.

[0005] The principle of gas / oil heating is to directly heat the mold by burning natural gas, liquefied gas or fuel. The advantages are high heating temperature (up to 1500°C or above), which is suitable for ultra-high temperature alloy molds, low fuel cost, and suitable for large molds (such as spacecraft shell die casting). The disadvantages are poor temperature control accuracy (±20~50°C), easy local overheating, combustion exhaust gas pollution (requiring a supporting exhaust gas treatment system), and high safety risks (explosion-proof design is required).

[0006] The principle of microwave / infrared radiation heating is to use microwaves or infrared rays to directly penetrate the mold material, stimulate molecular vibrations to generate heat; the advantages are non-contact heating, no physical loss, and selective heating of the inside of the mold (such as the gradient temperature field design of titanium alloy molds); the disadvantages are extremely high equipment costs (the microwave source requires a magnetron or solid-state generator), sensitivity to the dielectric properties of the material (such as carbon fiber molds require special tuning), limited penetration depth, and low heating efficiency for large molds.

[0007] In addition, when the movable mold moves toward the fixed mold, so that the movable mold and the fixed mold are closed to form a closed cavity, if the movable mold moves an insufficient distance, the movable mold and the fixed mold will not be closed enough, affecting the accuracy of the casting; if the movable mold moves an excessive distance, it will cause the movable mold and the fixed mold to excessively squeeze each other, causing damage to the device and affecting its service life.

[0008] Therefore, there is an urgent need for a high-temperature heat pipe mold for high-temperature die casting that can solve the above problems. Summary of the Invention

[0009] In order to solve the above problems, the present invention proposes a high-temperature heat pipe mold for high-temperature die casting, comprising a base, a movable mold unit and a fixed mold unit mounted on the upper end surface of the base, wherein a mold clamping drive element is provided at one end of the movable mold unit away from the fixed mold unit, and the mold clamping drive element is connected to the movable mold unit; Wherein, the movable mold unit includes a movable mold, and the fixed mold unit includes a fixed mold; It is characterized in that heat pipe heat exchange components are installed in both the movable mold and the fixed mold, wherein the heat pipe heat exchange components include a tube body and a capillary interlayer arranged on the inner wall of the tube body, and a working fluid is encapsulated inside the tube body.

[0010] Furthermore, a heating coil is wound around the evaporation end of the heat pipe heat exchange element, and the heating coil is connected to a heating power supply.

[0011] Furthermore, the movable mold unit includes a movable mold base and a movable mold, and the movable mold base and the movable mold are connected through a movable mold connecting frame. The mold closing drive element includes a mold closing hydraulic cylinder, and the mold closing actuating end of the mold closing hydraulic cylinder is transmission-connected to the movable mold base.

[0012] Furthermore, an auxiliary mold clamping element is provided on the movable mold base, and the auxiliary mold clamping element includes an auxiliary motor and an externally threaded rod connected to the auxiliary motor, and an external thread is provided on the outer side of the externally threaded rod; An internal threaded rod is provided on the outside of the external threaded rod, and an internal thread is provided on the inside of the internal threaded rod, and the internal thread matches the external thread; Wherein, a gantry is arranged above the fixed mold, and the internal threaded rod is aligned with the gantry.

[0013] Furthermore, a protective square column is fixedly mounted on one end of the mold clamping actuating end, and the protective square column is connected to the fixed mold; Wherein, in the first state, the protective square column and the fixed mold are relatively fixed; in the second state, the protective square column and the fixed mold slide relatively.

[0014] Furthermore, a connecting groove is provided on one end of the fixed mold facing the mold clamping actuating end, and the protective square column is slidably arranged in the connecting groove, and the shape and size of the protective square column match the connecting groove; Rectangular through holes are opened on the flat end surfaces of both sides of the protective square column, and elastically sliding bevel teeth are set in the rectangular through holes; A plurality of engagement grooves are provided on the inner flat end surface of the connecting groove, and the engagement grooves are arranged in a transverse array, and the number of the engagement grooves is greater than the number of the bevel teeth;.

[0015] Furthermore, the end of the bevel tooth away from the meshing groove is a tooth connecting block, and the shape and size of the tooth connecting block match the rectangular through hole; The end of the bevel tooth close to the meshing groove is a bevel portion, and the shape and size of the bevel portion match the meshing groove; An elastic member is also provided in the rectangular through hole, one end of the elastic member is connected to the lower end surface of the upper tooth connecting block, and the other end is connected to the upper end surface of the lower tooth connecting block.

[0016] Furthermore, a guide insert is provided on the lower end face of the upper tooth connecting block, and a guide slot is provided on the upper end face of the lower tooth connecting block, and the groove diameter of the guide slot matches the tube diameter of the guide insert, and the elastic member is arranged inside the guide slot and the guide insert, and the size matches the guide slot.

[0017] Furthermore, a pressure chamber is installed on the upper end surface of the base, and the pressure chamber is connected to the fixed mold unit through the injection piston element; And / or, a casting ejection element is also installed on the upper end surface of the base, and the casting ejection element is connected to the movable mold unit; wherein, the casting ejection element includes an ejection push rod, and the ejection actuating end of the ejection push rod is transmission-connected to the ejector, and the ejector is connected to the movable mold.

[0018] Furthermore, the fixed mold unit includes a fixed mold and a guide member installed on one end surface of the fixed mold facing the movable mold unit; the movable mold base and the movable mold are both provided with guide holes, and the guide holes match the guide member; And / or, the upper end surface of the base is provided with a slide rail, and the lower ends of the movable mold base and the movable mold are provided with sliders.

[0019] Compared with the prior art, the advantages of the present invention are: 1. The present invention features heat pipes installed in both the movable and fixed molds. These heat pipes conduct heat 5 to 10 times faster than traditional resistance heating, shortening mold preheating time. They quickly balance mold temperature differences, eliminate direct power loss, and are suitable for high-energy scenarios (such as gas heating replacement). They can also be embedded within the mold to optimize temperature field design (e.g., for the special-shaped structures of satellite housing molds).

[0020] 2. The movable mold base and the movable mold move as a whole toward the fixed mold, closing the movable and fixed molds to form a closed cavity. During this process, when the end face of the internally threaded rod facing the gantry hits the gantry, the movable mold moves to the set distance. This prevents insufficient or excessive movement of the movable mold, thereby improving casting precision and quality and preventing damage to the device. The distance between the end face of the internally threaded rod and the end face of the gantry can be adjusted by rotating the externally threaded rod to adapt to different working conditions.

[0021] 3. When the end of the internally threaded rod facing the gantry hits the gantry and the movable mold has moved just the right distance, the mold-closing actuator produces a slight displacement relative to the fixed mold. This prevents the movable mold from moving too far relative to the fixed mold, which could cause excessive impact on the movable and fixed molds during the delayed execution period. This eliminates the need to rely entirely on the control system's operational response time and eliminates the possibility of excessive compression of the movable and fixed molds due to delayed execution.

[0022] 4. When the end face of the internally threaded rod facing the gantry frame has not yet contacted the gantry frame, the elastic force of the elastic member keeps the bevel teeth extended and engaged with the meshing groove, thereby securing the square column and the fixed die relative to each other. When the end face of the internally threaded rod facing the gantry frame contacts the gantry frame, the force between the internally threaded rod and the gantry frame increases, compressing the elastic member and causing the bevel teeth to disengage from the meshing groove and enter the next adjacent meshing groove, thereby securing the square column and the fixed die from sliding relative to each other. The mold clamping actuator produces a slight displacement relative to the fixed die, preventing the movable die from moving too far relative to each other, which would cause excessive impact on the movable and fixed dies during the period of delayed execution. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0024] Figure 1 This is one of the overall structural diagrams of a high-temperature heat pipe mold used for high-temperature die casting; Figure 2 This is the second overall structure diagram of a high-temperature heat pipe mold used for high-temperature die casting; Figure 3This is an overall front view of a high-temperature heat pipe mold for high-temperature die casting; Figure 4 for Figure 3 Cross-sectional view at AA in the middle; Figure 5 for Figure 3 Cross-sectional view at the middle BB; Figure 6 for Figure 5 A partial enlarged view of the middle part; Figure 7 for Figure 6 A partial enlarged view of point B in the middle; In the figure, the base 100, the slide rail 110, the gantry 120, the movable mold unit 200, the movable mold base 210, the slider 211, the guide hole 212, the movable mold 220, the movable mold connecting frame 230, the guide connecting frame 231, the fixed mold unit 300, the fixed mold 310, the connecting groove 311, the meshing groove 312, the guide member 320, the mold clamping drive element 400, the mold clamping hydraulic cylinder 410, the mold clamping actuating end 411, the protective square column 420, the rectangular through hole 421, the inclined surface teeth 422, the tooth connecting block 423, the inclined surface 424, elastic member 425, guide insert 426, guide slot 427, pressure chamber 500, injection piston element 600, casting ejection element 700, ejection push rod 710, ejection actuator end 711, ejection member 720, heat pipe heat exchanger 800, tube body 810, capillary interlayer 820, working fluid 830, evaporation end 840, heating coil 850, condensation end 860, auxiliary mold clamping element 900, auxiliary motor 910, external threaded rod 920, internal threaded rod 930, limit member 940. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is described and illustrated below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely used to explain this application and are not intended to limit this application. Based on the embodiments provided in this application, all other embodiments obtained by those of ordinary skill in the art without making any creative efforts are within the scope of protection of this application.

[0026] like Figure 1-7 As shown, this embodiment provides a high-temperature heat pipe mold for high-temperature die casting, including a base 100 and a movable mold unit 200 and a fixed mold unit 300 installed on the upper end surface of the base 100. The movable mold unit 200 is provided with a mold clamping drive element 400 at one end away from the fixed mold unit 300, and the mold clamping drive element 400 is connected to the movable mold unit 200; generally, a spraying robot (not shown) is also installed on the upper end surface of the base 100.

[0027] It can be understood that before starting to die-cast the product, the first step is to turn on the mold temperature controller to heat the movable mold unit 200 and the fixed mold unit 300 to the target temperature value; the second step is to start the contour spraying robot to spray a certain amount of release agent and blow the mold cavity dry; the third step is to start the mold closing drive element 400 to drive the movable mold unit 200 and the fixed mold unit 300 to close, forming a closed cavity.

[0028] A pressure chamber 500 is further installed on the upper end surface of the base 100 , and the pressure chamber 500 is connected to the fixed mold unit 300 through the injection piston component 600 .

[0029] Therefore, in the fourth step, the robot is started to take a certain amount of molten metal and pour it into the pressure chamber 500; in the fifth step, the injection piston component 600 is started. The injection piston presses the metal into the cavity of the die-casting mold at high speed and high pressure, pushing the molten metal to quickly fill the cavity. At the same time, the vacuum valve system evacuates the cavity into a vacuum state; the sixth step is the pressure holding stage. After the molten metal fills the cavity, the injection piston continues to maintain a certain pressure to allow the molten metal to crystallize and solidify under pressure.

[0030] A casting ejection component 700 is further installed on the upper end surface of the base 100 , and the casting ejection component 700 is connected to the movable mold unit 200 .

[0031] Therefore, in the seventh step, after the casting is solidified, the mold closing drive element 400 is started to drive the movable mold unit 200 and the fixed mold unit 300 to separate, and the casting is ejected from the mold cavity through the casting ejection element 700.

[0032] Specifically, the movable mold unit 200 includes a movable mold base 210 and a movable mold 220, which are connected by a movable mold connecting frame 230. The mold clamping drive element 400 includes a mold clamping hydraulic cylinder 410, and the mold clamping actuator end 411 of the mold clamping hydraulic cylinder 410 is in driving connection with the movable mold base 210 to drive the movable mold unit 200 to move laterally as a whole, thereby completing the closing and opening of the mold. Preferably, the upper end surface of the base 100 is provided with a slide rail 110, and the lower ends of the movable mold base 210 and the movable mold 220 are provided with a slider 211.

[0033] The fixed mold unit 300 includes a fixed mold 310 and a guide member 320 mounted on one end of the fixed mold 310 facing the movable mold unit 200. Accordingly, guide holes 212 are provided on both the movable mold base 210 and the movable mold 220, and the guide holes 212 match the guide member 320. This further improves the stability of the movable mold movement.

[0034] The casting ejection element 700 includes an ejector rod 710, whose ejection actuator end 711 is in driving connection with an ejector member 720, which is connected to the movable mold 220. Therefore, after the casting is solidified and the movable mold 220 and the fixed mold 310 are separated, the ejector rod 710 is activated, and the ejection actuator end 711 drives the ejector member 720 to move, ejecting the casting from the mold cavity. Preferably, the movable mold connecting frame 230 is also provided with a guide connecting frame 231, and the ejection actuator end 711 extends through the guide connecting frame 231 to improve the stability of the movement of the ejector member 720.

[0035] It should be noted that for high-temperature molds requiring preheating exceeding 300°C, traditional heating methods such as resistance heating, induction heating, gas / oil heating, and microwave / infrared radiation heating have various drawbacks. To address these drawbacks, this embodiment uses high-temperature heat pipes to replace traditional heating methods such as resistance and oil circuits.

[0036] In this embodiment, heat pipe exchange components 800 are installed in both the movable mold 220 and the fixed mold 310. Heat pipe exchange components 800 include a tube body 810 and a capillary interlayer 820 disposed on the inner wall of the tube body 810. Working fluid 830 is encapsulated within the tube body 810. It will be appreciated that the capillary interlayer 820 is disposed on the inner wall of the tube body 810. After the tube body 810 is depressurized, an appropriate amount of working fluid 830 is enclosed. Because the liquid is in a depressurized state, it evaporates easily. The pressure within the tube is equal to the saturated vapor pressure of the liquid at its temperature, resulting in a gas-liquid equilibrium state.

[0037] A heating coil 850 is wrapped around the evaporation end 840 of the heat pipe exchanger 800 and connected to a heating power source (not shown). As a result, the working fluid impregnated within the interlayer 820 absorbs heat from the tube wall and evaporates. The vapor pressure at the heated portion rises, and the vapor flows toward the condensation end 860, where the pressure is lower and the temperature is lower, where it condenses into liquid. The condensed liquid, driven by capillary forces within the interlayer 820, returns to the heated portion and evaporates again. Thus, when one end of the heat pipe exchanger 800 is heated and the other end is cooled, a closed system of evaporation, condensation, and liquid reflux is formed within the tube. When the working fluid 830 evaporates, it absorbs heat in the form of latent heat of evaporation and releases an equal amount of heat when it condenses. This phase change of the working fluid generates latent heat exchange, enabling the heat pipe exchanger 800 to rapidly and efficiently transport large amounts of heat with minimal temperature differences.

[0038] Through the above settings, the heat pipe heat exchanger 800 has a heat conduction speed 5 to 10 times that of traditional resistance heating, which can shorten the mold preheating time; the heat pipe heat exchanger 800 can quickly balance the temperature difference of the mold; there is no direct loss of electricity, which is suitable for high-energy consumption scenarios (such as gas heating replacement); it can be embedded in the mold to optimize the temperature field design (such as the special-shaped structure of the satellite shell mold).

[0039] It is understandable that when the mold closing hydraulic cylinder 410 is started to drive the movable mold base 210 and the movable mold 220 to move as a whole toward the fixed mold 310, so that the movable mold 220 and the fixed mold 310 are closed to form a closed mold cavity, if the movable mold 220 does not move enough, the movable mold 220 and the fixed mold 310 will not be closed enough, affecting the accuracy of the casting; if the movable mold 220 moves too far, it will cause the movable mold 220 and the fixed mold 310 to excessively squeeze each other, causing damage to the device and affecting its service life.

[0040] To eliminate the above-mentioned drawbacks, in this embodiment, an auxiliary mold clamping element 900 is provided on the movable mold base 210. The auxiliary mold clamping element 900 includes an auxiliary motor 910 and an externally threaded rod 920 in transmission connection with the auxiliary motor 910. The externally threaded rod 920 has an external thread on its outer side. An internally threaded rod 930 is provided on the outer side of the externally threaded rod 920. The internally threaded rod 930 has an internal thread on its inner side, and the internal thread matches the external thread. The externally threaded rod 920 drives the internally threaded rod 930 to rotate, causing the internally threaded rod 930 to move axially. A gantry 120 is provided above the fixed mold 310, and the internally threaded rod 930 is aligned with the gantry 120.

[0041] As a result, the movable mold base 210 and the movable mold 220 move as a whole toward the fixed mold 310, so that the movable mold 220 and the fixed mold 310 are closed to form a closed mold cavity. When the end face of the internal threaded rod 930 facing the gantry 120 contacts the gantry 120, the movement distance of the movable mold 220 meets the set value, avoiding insufficient or excessive movement of the movable mold 220, thereby improving the accuracy and quality of the casting and avoiding damage to the device. By rotating the external threaded rod 920, the distance between the end face of the internal threaded rod 930 and the end face of the gantry 120 is adjusted to adapt to different working conditions. Preferably, a limit member 940 is also provided on the movable mold base 210, and the limit member 940 matches the internal threaded rod 930 to limit the rotation of the internal threaded rod 930 so that it can only move.

[0042] It is understood that when the end surface of the internally threaded rod 930 facing the gantry 120 contacts the gantry 120, feedback is provided to the controller, which then determines the situation and sends a command to the mold-closing hydraulic cylinder 410, thereby shutting down the mold-closing hydraulic cylinder 410. However, due to the aforementioned feedback, determination, and execution process, the mold-closing actuator 411 may execute the action later, ultimately causing the movable mold 220 to move slightly further, resulting in excessive compression between the movable mold 220 and the fixed mold 310, causing damage to the device and shortening its service life.

[0043] In order to eliminate the above problems, in this embodiment, a protective square column 420 is fixedly installed at one end of the mold closing actuator end 411, and the protective square column 420 is connected to the fixed mold 310; wherein, in the first state, the protective square column 420 and the fixed mold 310 are relatively fixed; in the second state, the protective square column 420 and the fixed mold 310 slide relative to each other.

[0044] As a result, the movable mold base 210 and the movable mold 220 move toward the fixed mold 310 as a whole, so that the movable mold 220 and the fixed mold 310 are closed to form a closed cavity. In the process, when the end face of the internal threaded rod 930 facing the gantry 120 has not yet hit the gantry 120, it is the first state, and the protective square column 420 is relatively fixed to the fixed mold 310, so that the movable mold base 210 and the movable mold 220 move toward the fixed mold 310 as a whole normally, and the mold closing actuating end 411 continues to extend; when the internal threaded rod 930 faces the gantry 120, the end face of the internal threaded rod 930 faces the gantry 120, and the end face of the internal threaded rod 930 faces the gantry 120. When the end face of the gantry 120 contacts the gantry 120, that is, in the second state, the acting force between the internal threaded rod 930 and the gantry 120 increases, and the protective square column 420 and the fixed mold 310 slide relative to each other, thereby protecting the square column 420 from a slight displacement relative to the fixed mold 310, so that the execution action of the mold closing actuator end 411 is late during this period, thereby preventing the movable mold 220 from moving a slightly large distance, causing the movable mold 220 and the fixed mold 310 to be excessively squeezed against each other, causing damage to the device and affecting its service life.

[0045] With this arrangement, when the end surface of the internally threaded rod 930 facing the gantry 120 contacts the gantry 120 and the movable mold 220 has moved just the right distance, the mold-closing actuator 411 undergoes a slight displacement relative to the fixed mold 310. This prevents the movable mold 220 from moving too far relative to the fixed mold 310, which could cause excessive impact on the movable mold 220 and the fixed mold 310 during the delayed execution period. This eliminates the need to rely solely on the control system's operational response time and eliminates the risk of excessive compression on the movable mold 220 and the fixed mold 310 due to delayed execution.

[0046] Specifically, a connection groove 311 is defined at one end of the fixed mold 310 facing the mold clamping actuating end 411 , and the protective square column 420 is slidably disposed in the connection groove 311 , and the shape and size of the protective square column 420 match the connection groove 311 .

[0047] The flat end surfaces of the protective square pillars 420 each have rectangular through-holes 421, each containing elastically slidable beveled teeth 422. Correspondingly, the inner flat end surface of the connecting slot 311 has a plurality of engagement grooves 312 arranged in a horizontal array, with the number of engagement grooves 312 exceeding the number of beveled teeth 422.

[0048] Among them, the end of the bevel tooth 422 away from the meshing groove 312 is a tooth connecting block 423, and the shape and size of the tooth connecting block 423 match the rectangular through hole 421, so that the bevel tooth 422 can slide relative to the rectangular through hole 421; the end of the bevel tooth 422 close to the meshing groove 312 is a bevel portion 424, and the shape and size of the bevel portion 424 match the meshing groove 312, so that the bevel tooth 422 can mesh with the meshing groove 312.

[0049] An elastic member 425 is also disposed within the rectangular through-hole 421. One end of the elastic member 425 is connected to the lower end surface of the upper tooth connection block 423, and the other end is connected to the upper end surface of the lower tooth connection block 423. Preferably, a guide insert 426 is disposed on the lower end surface of the upper tooth connection block 423, and a guide slot 427 is disposed on the upper end surface of the lower tooth connection block 423. The slot diameter of the guide slot 427 matches the diameter of the guide insert 426. The elastic member 425 is disposed within the guide slot 427 and the guide insert 426, and its size matches that of the guide slot 427.

[0050] As a result, the movable mold base 210 and the movable mold 220 move as a whole toward the fixed mold 310, so that the movable mold 220 and the fixed mold 310 are closed to form a closed mold cavity. In the process, when the end face of the internal threaded rod 930 facing the gantry 120 has not yet contacted the gantry 120, under the elastic force of the elastic member 425, the bevel teeth 422 remain in an extended state and engage with the meshing groove 312, thereby protecting the square column 420 and the fixed mold 310 from relative fixation; when the end face of the internal threaded rod 930 facing the gantry 120 contacts the gantry 120, the action force between the internal threaded rod 930 and the gantry 120 increases, the elastic member 425 is compressed by the increased force, and the bevel teeth 422 disengage from the meshing groove 312 and enter the next adjacent meshing groove 312, thereby protecting the square column 420 and the fixed mold 310 from relative sliding.

[0051] It is worth noting that when the end face of the internal threaded rod 930 facing the gantry 120 collides with the gantry 120, it will be fed back to the controller. After judgment, the controller will send an instruction to the mold clamping hydraulic cylinder 410, thereby shutting down the mold clamping hydraulic cylinder 410. Although the above-mentioned feedback, judgment, and execution process will cause execution delay, the mold clamping actuator end 411 will produce a slight displacement relative to the fixed mold 310, avoiding the movable mold 220 from moving too far relative to the fixed mold 310, causing the movable mold 220 and the fixed mold 310 to be subjected to excessive impact during the period of late execution.

[0052] The foregoing description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be readily conceived by a person skilled in the art within the technical scope disclosed herein are intended to be encompassed within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A high-temperature heat pipe mold for high-temperature die casting, comprising a base, a movable mold unit, and a fixed mold unit mounted on the upper end surface of the base, wherein a mold clamping drive element is provided at one end of the movable mold unit away from the fixed mold unit, and the mold clamping drive element is connected to the movable mold unit; in, The movable mold unit includes a movable mold, and the fixed mold unit includes a fixed mold; It is characterized in that heat pipe heat exchange components are installed in both the movable mold and the fixed mold, wherein the heat pipe heat exchange components include a tube body and a capillary interlayer arranged on the inner wall of the tube body, and a working fluid is encapsulated inside the tube body.

2. The high-temperature heat pipe mold for high-temperature die casting according to claim 1, characterized in that: A heating coil is wound around the evaporation end of the heat pipe heat exchange element, and the heating coil is connected to a heating power supply.

3. The high-temperature heat pipe mold for high-temperature die casting according to claim 2, characterized in that: The movable mold unit includes a movable mold base and a movable mold, and the movable mold base and the movable mold are connected through a movable mold connecting frame. The mold closing drive element includes a mold closing hydraulic cylinder, and the mold closing actuating end of the mold closing hydraulic cylinder is transmission-connected to the movable mold base.

4. The high-temperature heat pipe mold for high-temperature die casting according to claim 3, characterized in that: An auxiliary mold clamping element is provided on the movable mold base, and the auxiliary mold clamping element includes an auxiliary motor and an externally threaded rod connected to the auxiliary motor, and an external thread is provided on the outer side of the externally threaded rod; An internal threaded rod is provided on the outside of the external threaded rod, and an internal thread is provided on the inside of the internal threaded rod, and the internal thread matches the external thread; Wherein, a gantry is arranged above the fixed mold, and the internal threaded rod is aligned with the gantry.

5. The high-temperature heat pipe mold for high-temperature die casting according to claim 4, characterized in that: A protective square column is fixedly installed on one end of the mold clamping actuating end, and the protective square column is connected to the fixed mold; Wherein, in the first state, the protective square column and the fixed mold are relatively fixed; in the second state, the protective square column and the fixed mold slide relatively.

6. The high-temperature heat pipe mold for high-temperature die casting according to claim 5, characterized in that: A connecting groove is provided on one end of the fixed mold facing the mold clamping actuating end, and the protective square column is slidably arranged in the connecting groove, and the shape and size of the protective square column match the connecting groove; Rectangular through holes are opened on the flat end surfaces of both sides of the protective square column, and elastically sliding bevel teeth are set in the rectangular through holes; A plurality of engagement grooves are provided on the inner flat end surface of the connecting groove, and the engagement grooves are arranged in a transverse array, and the number of the engagement grooves is greater than the number of the bevel teeth.

7. The high-temperature heat pipe mold for high-temperature die casting according to claim 6, characterized in that: The end of the bevel tooth away from the meshing groove is a tooth connecting block, and the shape and size of the tooth connecting block match the rectangular through hole; The end of the bevel tooth close to the meshing groove is a bevel portion, and the shape and size of the bevel portion match the meshing groove; An elastic member is also provided in the rectangular through hole, one end of the elastic member is connected to the lower end surface of the upper tooth connecting block, and the other end is connected to the upper end surface of the lower tooth connecting block.

8. The high-temperature heat pipe mold for high-temperature die casting according to claim 7, characterized in that: The lower end surface of the upper tooth connecting block is provided with a guide insert, and the upper end surface of the lower tooth connecting block is provided with a guide slot, and the groove diameter of the guide slot matches the tube diameter of the guide insert. The elastic member is arranged inside the guide slot and the guide insert, and its size matches the guide slot.

9. The high-temperature heat pipe mold for high-temperature die casting according to claim 1, characterized in that: A pressure chamber is also installed on the upper end surface of the base, and the pressure chamber is connected to the fixed mold unit through the injection piston element; And / or, a casting ejection element is also installed on the upper end surface of the base, and the casting ejection element is connected to the movable mold unit; wherein, the casting ejection element includes an ejection push rod, and the ejection actuating end of the ejection push rod is transmission-connected to the ejector, and the ejector is connected to the movable mold.

10. The high-temperature heat pipe mold for high-temperature die casting according to claim 3, characterized in that: The fixed mold unit includes a fixed mold and a guide member installed on one end surface of the fixed mold facing the movable mold unit; the movable mold base and the movable mold are both provided with guide holes, and the guide holes match the guide member; And / or, the upper end surface of the base is provided with a slide rail, and the lower ends of the movable mold base and the movable mold are provided with sliders.

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