Rapid pressure casting equipment for alloy pressure casting and pressure casting method thereof

Abstract

The invention provides rapid die-casting equipment for alloy die castings, which comprises a base mechanism, a metal liquid injection system and a die traction mechanism are arranged on the base mechanism, and a metal liquid injection part is arranged at the output end of the metal liquid injection system and outputs metal liquid to the die traction mechanism. A die-casting mechanism is arranged on the die traction mechanism and is used for carrying out die-casting on the molten metal; the base mechanism is further provided with a power supply mechanism, and the power supply mechanism supplies power to the molten metal injection part and the mold traction mechanism. During use, the multiple heat compensation devices are arranged on the opposite faces of the fixed die mounting base and the movable die mounting base and make contact with the die-casting mechanism, the die-casting mechanism is preheated in advance before molten metal is poured, and the situation that molten metal is solidified due to the large temperature difference when the molten metal enters the die-casting mechanism is avoided; and the problems that bubbles and cavities are generated in the product and die casting is not full due to different solidification rates are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of metal die casting, in particular to a rapid die casting device for alloy die castings. Background Art

[0002] Metal die-casting is a highly efficient process for manufacturing precision metal parts. During the metal die-casting process, when the molten metal enters the mold cavity through the injection system, the first molten metal that enters will first contact the mold with a lower temperature and cool down, while the subsequent molten metal will cool down more slowly. For the above reasons, the fluidity of the molten metal that enters first will deteriorate, and it is easy to block the mold channel. At the same time, the inconsistent solidification speed of the molten metal in the mold can easily cause the materials to expand and contract at different coefficients and pull each other, resulting in defects such as cavities and bulges in the product.

[0003] For example, page 147 of Chapter 5 "Die-casting Process and Prevention of Defects in Die-casting Parts" in Part 1 "Die-casting Molding Process and Die-casting Machine" of "Practical Handbook of Modern Die-casting Technology" systematically explains the influence of die-casting process parameters on defects, and clearly points out that "uneven preheating of the die-casting mold" is one of the key reasons for cracks on the mold surface and network hair wings (turtle cracks) on die-casting parts.

[0004] To this end, the present application proposes a rapid die-casting device for alloy die-casting parts, which is used to improve the consistency of the solidification speed of the molten metal and improve the quality of the product. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a rapid die-casting device for alloy die-castings, which is used to solve the problem of inconsistent solidification speed of molten metal entering the mold mentioned in the prior art.

[0006] To achieve the above-mentioned purpose and other related purposes, the present invention provides a rapid die-casting device for alloy die-casting parts, comprising a base mechanism, on which a metal hydraulic injection system and a mold traction mechanism are respectively arranged, a molten metal injection part is arranged at the output end of the metal hydraulic injection system, and the molten metal injection part can output molten metal to the mold traction mechanism, and a die-casting mechanism is arranged on the mold traction mechanism, and the die-casting mechanism performs die-casting on the molten metal;

[0007] The base mechanism is also provided with a power supply mechanism, which supplies power to the molten metal injection part and the mold pulling mechanism respectively;

[0008] The mold pulling mechanism includes a fixed mold mounting seat and a fixed support platform, the fixed mold mounting seat and the fixed support platform are both arranged on the top of the base mechanism, and a gap is left between the fixed mold mounting seat and the fixed support platform, and the metal liquid injection part passes through the axis of the fixed mold mounting seat;

[0009] The four corners of the opposite surfaces of the fixed mold mounting seat and the fixed support platform are provided with support rails, and a slidable movable mold mounting seat is provided on the support rails. A plurality of movable mold mounting seat driving parts are installed on the fixed support platform, and the movable mold mounting seat driving parts are used to drive the movable mold mounting seat to move toward the fixed mold mounting seat;

[0010] A plurality of supplementary heaters are arranged on the opposite surfaces of the fixed mold mounting seat and the movable mold mounting seat;

[0011] The die-casting mechanism is respectively mounted on the opposite surfaces of the fixed mold mounting seat and the movable mold mounting seat, and the die-casting mechanism is fitted with the supplementary heater;

[0012] A pre-pressing mechanism is also provided at the connection between the molten metal injection part and the fixed mold mounting seat.

[0013] Preferably, the tops of the fixed mold mounting seat and the movable mold mounting seat are both provided with mold limiting grooves;

[0014] The die-casting mechanism comprises two symmetrically arranged casting molds, and a connecting block is arranged on the top of each casting mold. The connecting block is inserted into the mold limiting groove and connected through an external locking piece.

[0015] Preferably, each of the four corners of the casting mold is provided with a support groove, the support groove is an open groove, and the inner diameter of the support groove is adapted to the diameter of the support guide rail;

[0016] The axis of the casting mold installed on the fixed mold mounting seat is provided with a heat storage pipe connecting hole matched with the outer diameter of the metal liquid injection part.

[0017] Preferably, the metal liquid ejection part comprises an injection tube, the end of the injection tube is provided with a heat storage tube, and the end of the heat storage tube passes through the middle of the fixed mold mounting seat;

[0018] A heater is provided on the outer surface of the heat storage tube, the heater is electrically connected to the power supply mechanism, and the outer surface of the heater is covered with a heat insulation cover;

[0019] The pre-pressing mechanism comprises a driver and an extension tube, one end of the extension tube is connected to the interior of the driver, and the other end of the extension tube is connected to the outer surface of the driver;

[0020] The output end of the driver is provided with a ball valve transmission rod, the ball valve transmission rod extends to the inside of the extension tube and is rotatable, the end of the ball valve transmission rod is provided with a heat insulation sealing plug, the heat insulation sealing plug seals the connection between the extension tube and the heat storage tube, and the end of the heat insulation sealing plug is provided with an O-shaped valve core, and the O-shaped valve core controls the on and off of the heat storage tube by rotating;

[0021] The inner wall of the heat storage tube is provided with a limit support body, and the limit support body supports the periphery of the O-shaped valve core.

[0022] Preferably, a heat exchanger installation cavity is provided inside the fixed mold mounting seat and the movable mold mounting seat, the tail of the heat exchanger extends into the interior of the heat exchanger installation cavity, and a power distribution component is installed inside the heat exchanger installation cavity, and all the heat exchangers are electrically connected to the power distribution component;

[0023] The bottoms of the fixed mold mounting seat and the movable mold mounting seat are both provided with heat supply terminals, and the heat supply terminals are electrically connected to the power distribution component and the power supply mechanism respectively.

[0024] Preferably, the power supply mechanism includes a human-machine interaction device and a power supply rail, the human-machine interaction device and the power supply rail are electrically connected, and the human-machine interaction device is electrically connected to an external power source;

[0025] The heater power supply terminals at the bottom of the fixed mold mounting seat and the movable mold mounting seat are electrically connected to the movable mold mounting seat.

[0026] Preferably, a limit slide groove is provided on the top of the power supply rail, and insulating columns are provided at the four corners of the limit slide groove at the top of the human-computer interaction device, and two electrode strips parallel to the limit slide groove are provided on the insulating columns;

[0027] The two electrode strips are respectively connected to two poles of a power source;

[0028] The power supply terminal of the heat replenisher passes through the limiting slide groove and extends to the inside of the power supply rail to be electrically connected to the two electrode strips respectively.

[0029] Preferably, the power supply terminal of the heat compensator includes an insulating block, and two electric shock electrodes extend from the bottom of the insulating block, and the two electric shock electrodes are electrically connected to the two electrode strips respectively.

[0030] Preferably, the electrode strip is elastic, the bottoms of the two electric shock electrodes are both smooth surfaces, and the electric shock electrodes contact the electrode strip to make the electrode strip bend downward.

[0031] A die-casting method of a rapid die-casting device for alloy die-castings, comprising the rapid die-casting device for alloy die-castings and the following steps:

[0032] Step 1: Install the casting mold between the fixed mold mounting seat and the movable mold mounting seat according to product requirements;

[0033] Step 2: The movable mold mounting seat is driven by the movable mold mounting seat driving unit to bring the two casting molds closer to each other, and the two casting molds are heated by the supplementary heat device and the heat storage tube is heated by the heater to reduce the temperature difference after the molten metal enters the inside of the casting mold;

[0034] Step 3: Injecting liquid metal into the casting mold through the metal hydraulic injection system and the liquid metal injection part, and maintaining the pressure on the liquid metal so that the liquid metal completely fills the mold groove in the middle of the casting mold;

[0035] Step 4: Gradually reduce the temperature of the supplemental heater to allow the molten metal to cool and solidify.

[0036] As described above, the rapid die-casting equipment for alloy die-castings of the present invention has the following beneficial effects:

[0037] 1. The present invention arranges a plurality of supplementary heaters on the opposite surfaces of the fixed mold mounting seat and the movable mold mounting seat, and makes the supplementary heaters contact with the die-casting mechanism, so as to preheat the die-casting mechanism before the molten metal is poured, thereby preventing the molten metal from solidifying due to a large temperature difference when entering, and avoiding the problem of inconsistent solidification rates, resulting in bubbles, cavities and unsatisfactory die-casting inside the product.

[0038] At the same time, a heater is arranged on the outer surface of the heat storage tube to supplement the heat of the molten metal that enters the die-casting mechanism in advance, ensuring that the temperature of the molten metal does not drop significantly after being transmitted over a long distance, resulting in poor fluidity.

[0039] 2. The present invention provides a pre-pressing mechanism at the connection between the molten metal ejection part and the fixed mold mounting seat. When the casting is cooled and finalized, the pre-pressing mechanism blocks the flow of the molten metal ejection part. At this time, the metal hydraulic injection system continues to transport the molten metal to the inside of the molten metal ejection part and continues to pressurize the molten metal. When it is necessary to transport the molten metal for die casting, the subsequent molten metal has a higher flow rate and a greater pressure, and quickly enters the internal gap of the die casting mechanism for die casting. Compared with the prior art that pressurizes and transports the molten metal after die casting, it has the effect of increasing the die casting speed.

[0040] 3. The present invention sets mold limiting grooves on the top of the fixed mold mounting seat and the movable mold mounting seat, sets a connecting block on the top of the casting mold, and fixes the casting mold by bolts to ensure the uniqueness and stability of the installation position of the casting mold.

[0041] At the same time, support grooves matching the diameter of the support rails are provided at the four corners of the casting mold. The four corners of the casting mold are limited by the cooperation of the support grooves and the support rails, so as to avoid the displacement of the casting mold due to pressure during die casting, thereby improving the accuracy of the mold. When disassembling the casting mold, the support groove can be separated from the limitation of the support rails by rotating the casting mold in the vertical direction. When installing, only the reverse operation is required so that the casting mold is supported by the support rails and the casting mold is pushed to insert the connection block into the mold limit groove, and no additional support force is required to support the casting mold, thereby achieving the effect of convenient installation of the casting mold.

[0042] 4. The present invention installs a power supply rail on the top of the base mechanism, and opens a limiting slide groove on the power supply rail to penetrate into the interior of the power supply rail, and installs two electrode strips inside the power supply rail to connect the positive and negative poles of the power supply. At the same time, a heater power supply terminal is arranged at the bottom of the fixed mold mounting seat and the movable mold mounting seat to be electrically connected to the two electrode strips. During the horizontal movement of the movable mold mounting seat, the heater can be continuously powered, which can effectively avoid the problems of line entanglement, wear and high temperature damage caused by the use of sheathed wires for power supply.

[0043] 5. The present invention makes the electrode strip elastic and at the same time makes the electric shock electrode contact the electrode strip so that the electrode strip bends downward. During the movement of the movable mold mounting seat, the electric shock electrode can maintain stable power supply under the elastic action of the electrode strip, thereby avoiding poor contact and arcing. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 Shown is a schematic structural diagram of the present invention.

[0045] Figure 2 Shown is a side view of the present invention.

[0046] Figure 3 Shown as the present invention Figure 2 A schematic diagram of the enlarged structure at point A in the middle.

[0047] Figure 4 Shown is a schematic diagram of the distribution of the supplementary heat device of the present invention.

[0048] Figure 5 It is a schematic diagram of the structural assembly of the present invention.

[0049] Figure 6 Shown is a schematic structural diagram of the movable mold mounting base of the present invention.

[0050] Figure 7 Shown is a structural cross-sectional view of the movable mold mounting seat of the present invention.

[0051] Figure 8Shown is a schematic diagram of the structure inside the power supply rail of the present invention.

[0052] Fig. 9 Shown is a schematic structural diagram of the pre-pressing mechanism of the present invention.

[0053] Fig.10 The present invention provides Fig. 9 A magnified schematic diagram of the structure at point B in the middle.

[0054] Fig.11 Shown is a structural cross-sectional view of the pre-pressing mechanism of the present invention.

[0055] Component number description:

[0056] 1. Base mechanism; 2. Metal hydraulic injection system; 3. Metal liquid injection unit; 301. Shot tube; 302. Heat storage tube; 303. Heater; 304. Heat shield; 4. Mold traction mechanism; 401. Fixed mold mounting seat; 402. Fixed support platform; 403. Support guide rail; 404. Movable mold mounting seat; 405. Movable mold mounting seat drive unit; 406. Heater; 407. Mold limit groove; 408. Heater power supply terminal; 4081. Insulation block; 4082. Electric shock electrode; 40 9. Heater installation cavity; 410. Power distribution component; 5. Die-casting mechanism; 501. Casting mold; 502. Support groove; 503. Connecting block; 504. Heat storage tube connecting hole; 6. Power supply mechanism; 601. Human-machine interaction device; 602. Power supply rail; 603. Limit slide groove; 604. Insulating column; 605. Electrode strip; 7. Pre-pressing mechanism; 701. Driver; 702. Extension tube; 703. Ball valve drive rod; 704. Heat insulation sealing plug; 705. O-shaped valve core; 706. Limit support body. DETAILED DESCRIPTION

[0057] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0058] See also Figures 1 to 11. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0059] like Figure 1 , Figure 2 , Figure 4 and Fig. 9 As shown, the present invention provides a rapid die-casting device for alloy die-casting parts, including a base mechanism 1, which is used to support the entire device to ensure the smooth operation of the entire device. A metal hydraulic injection system 2 and a mold traction mechanism 4 are respectively arranged on the base mechanism 1. The metal hydraulic injection system 2 converts the hydraulic energy of the pump into the hydraulic energy of the pump through a motor, thereby driving the opening and closing of the mold and the injection of the molten metal. The injection part relies on the energy of the hydraulic system to push the punch to push the molten metal into the mold cavity, which is an essential device of the existing die-casting equipment. The mold traction mechanism 4 is used to drive the mold to move to achieve the functions of die-casting and demolding. The output end of the metal hydraulic injection system 2 is provided with a metal liquid injection part 3 to output the metal liquid to the mold traction mechanism 4, and the mold traction mechanism 4 is provided with a die-casting mechanism 5 to die-cast the metal liquid.

[0060] The base mechanism 1 is also provided with a power supply mechanism 6, which supplies power to the molten metal injection part 3 and the mold pulling mechanism 4. The power supply mechanism 6 includes a control module for controlling the current output and output time, and a human-computer interaction panel. The operator sets the current output and output input time through the interactive panel.

[0061] The mold traction mechanism 4 includes a fixed mold mounting seat 401 and a fixed support platform 402. The fixed mold mounting seat 401 and the fixed support platform 402 are both arranged on the top of the base mechanism 1, and a gap is left between the fixed mold mounting seat 401 and the fixed support platform 402, and the metal liquid injection part 3 passes through the axis of the fixed mold mounting seat 401. Support guide rails 403 are arranged at the four corners of the opposite surfaces of the fixed mold mounting seat 401 and the fixed support platform 402. A slidable movable mold mounting seat 404 is arranged on the support guide rail 403, and the movable mold mounting seat 404 is supported by the support guide rail 403 and moves along the track of the support guide rail 403 to ensure the stability of the movement of the movable mold mounting seat 404. A plurality of movable mold mounting seat driving parts 405 are installed on the fixed support platform 402. The movable mold mounting seat driving parts 405 are hydraulic or pneumatic devices, which are set according to the pressure tonnage required during die casting. The movable die mounting seat driving part 405 is used to drive the movable die mounting seat 404 to move toward the fixed die mounting seat 401 to fit the die casting mechanism 5 so that the molten metal can flow inside the die casting mechanism 5 without overflowing.

[0062] Several supplementary heaters 406 are arranged on the opposite surfaces of the fixed mold mounting seat 401 and the movable mold mounting seat 404, and the die-casting mechanism 5 is respectively mounted on the opposite surfaces of the fixed mold mounting seat 401 and the movable mold mounting seat 404, and the die-casting mechanism 5 is fitted with the supplementary heaters 406. When the supplementary heater 406 is working, it can heat the fitted die-casting mechanism 5, thereby preheating the die-casting mechanism 5. It is prevented that the molten metal flows through the inside of the die-casting mechanism 5 and accelerates solidification or deteriorates in fluidity due to the temperature difference. The premature solidification and deterioration of fluidity of the molten metal will cause the molten metal to be unable to completely fill the cavity in the die-casting mechanism 5, which will seriously affect the quality of the product. After the molten metal completely enters the internal cavity of the die-casting mechanism 5, the metal hydraulic injection system 2 continues to maintain pressure, and the supplementary heater 406 will gradually reduce the temperature until it is no longer heated. Ensure that the molten metal can cool down and solidify linearly, and avoid excessive cooling that causes the temperature difference between the inside and outside of the product to increase. During the solidification process of the product, excessive temperature difference between the inside and outside of the product will cause internal fractures or hollowing due to thermal expansion and contraction.

[0063] A pre-pressing mechanism 7 is also provided at the connection between the molten metal injection part 3 and the fixed mold mounting seat 401. When the casting is cooled and finalized, the pre-pressing mechanism 7 blocks the flow of the molten metal injection part 3. At this time, the metal hydraulic injection system 2 continues to transport the molten metal to the inside of the molten metal injection part 3 and continues to pressurize the molten metal. When it is necessary to transport the molten metal for die casting, the subsequent molten metal has a higher flow rate and a greater pressure, and quickly enters the internal gap of the die casting mechanism 5 for die casting. Compared with the prior art that pressurizes and transports the molten metal after the die casting is completed, it has the effect of increasing the die casting speed.

[0064] like Figure 1 and Figure 5 As shown, in some embodiments, the tops of the fixed mold mounting seat 401 and the movable mold mounting seat 404 of the present invention are both provided with mold limiting grooves 407 .

[0065] The die-casting mechanism 5 includes two symmetrically arranged casting molds 501, and the opposite surfaces of the two symmetrical casting molds 501 are provided with predetermined product die-casting chambers (because different products use different molds, the die-casting chambers are not drawn in the figure). A connecting block 503 is provided on the top of each casting mold 501. When installed, the connecting block 503 is inserted into the inside of the mold limiting groove 407 and connected by an external locking piece, thereby ensuring the uniqueness of the installation position of the casting mold 501, and limiting the connecting block 503 by the mold limiting groove 407, ensuring that the casting mold 501 will not deviate or fall off when the workpiece is die-cast.

[0066] like Figure 1 and Figure 5 In some embodiments shown, each casting mold 501 of the present invention is provided with support grooves 502 at the four corners, and the support grooves 502 are open grooves. When installing the casting mold 501, the casting mold 501 is inserted between the support rails 403 at an angle perpendicular to the fixed mold mounting seat 401, and then the casting mold 501 is rotated parallel to the fixed mold mounting seat 401 to achieve the preliminary fixation of the casting mold 501 by the support rails 403 and the support grooves 502. Subsequent installation and position correction are all supported by the support rails 403 for the casting mold 501, and no additional support force is required. When disassembling, the reverse operation can be performed, which improves the convenience of disassembly and assembly of the casting mold 501. The inner diameter of the support groove 502 is matched with the diameter of the support guide rail 403, so as to ensure that the casting mold 501 remains absolutely stable when supported by the support guide rail 403, so as to reduce the displacement of the casting mold 501 and the damage to the connecting block 503 and the locking devices such as the bolts fixing the connecting block 503 due to pressure when the workpiece is die-cast.

[0067] The casting mold 501 mounted on the fixed mold mounting seat 401 is provided with a heat storage pipe connection hole 504 that matches the outer diameter of the molten metal injection part 3. After the casting mold 501 is installed, the molten metal can be transmitted to the die casting chamber between the combined casting molds 501 through the cooperation of the molten metal injection part 3 and the heat storage pipe connection hole 504 to realize the die casting operation.

[0068] like Figure 5As shown, in some embodiments, the metal liquid ejection part 3 of the present invention includes a shot tube 301, and a heat storage tube 302 is provided at the end of the shot tube 301. The heat storage tube 302 is made of a metal material with high thermal conductivity and high heat resistance. It is used to improve the efficiency of heat transfer and improve the service life. The end of the heat storage tube 302 passes through the middle of the fixed mold mounting seat 401, and extends to the inside of the casting mold 501 after the casting mold 501 is installed and communicates with the die casting cavity.

[0069] The outer surface of the heat storage tube 302 is provided with a heater 303, and the heater 303 is electrically connected to the power supply mechanism 6. When the heater 303 is powered on, the heater 303 generates an eddy current heating effect to heat the heat storage tube 302, thereby preventing the temperature of the metal liquid from decreasing after long-distance transmission, and is used to improve the fluidity of the metal liquid. The outer surface of the heater 303 is covered with a heat insulation cover 304, which is made of heat insulation material and is used to reduce temperature loss and play a role in heat preservation.

[0070] like Figure 9-11 As shown, the pre-pressing mechanism 7 includes a driver 701 and an extension tube 702. One end of the extension tube 702 is connected to the interior of 303, and the other end of the extension tube 702 is connected to the outer surface of the driver 701. The driver 701 is connected to the power supply mechanism 6 through a cable and is controlled by the power supply mechanism 6. When the driver 701 is powered on, the shaft can rotate in a predetermined direction and torque. The driver 701 is a controllable driving device such as a servo motor, a stepping motor, etc.

[0071] The output end of the driver 701 is provided with a ball valve transmission rod 703, which extends to the inside of the extension tube 702 and can rotate. The end of the ball valve transmission rod 703 is provided with a heat insulation sealing plug 704, which is made of a pressure-resistant ceramic part and is used to seal the mouth of the extension tube 702 to prevent the metal liquid from penetrating into the inside of the extension tube 702. The heat insulation sealing plug 704 seals the connection between the extension tube 702 and the heat storage tube 302. The end of the heat insulation sealing plug 704 is provided with an O-shaped valve core 705, which controls the on and off of the heat storage tube 302 by rotating. In this way, it controls whether the metal liquid in the heat storage tube 302 flows into the casting mold 501.

[0072] Specifically, when the front section of the molten metal enters the casting mold 501 for cooling and shaping, the O-shaped valve core 705 cuts off the heat storage tube 302. At this time, the molten metal ejection unit 3 continues to transport the molten metal to the heat storage tube 302, so that the molten metal in the heat storage tube 302 is in a high-pressure state. When it is necessary to inject the molten metal into the casting mold 501 again, the pressurized molten metal can flow into the casting mold 501 at a higher initial velocity, reducing the transportation time of the molten metal. At the same time, the molten metal is always under high pressure, and the possibility of generating bubbles is also reduced during solidification and shaping.

[0073] Because a heater 303 is provided outside the heat storage tube 302 to heat the heat storage tube 302 , the temporarily intercepted molten metal will not solidify inside the heat storage tube 302 .

[0074] The inner wall of the heat storage tube 302 is provided with a limit support 706, which supports the periphery of the O-shaped valve core 705 to improve the pressure resistance of the O-shaped valve core 705 and the ball valve transmission rod 703 and to improve the service life. The limit support 706 covers the O-shaped valve core 705 to improve the sealing performance between the O-shaped valve core 705 and the heat storage tube 302 after closing.

[0075] like Figure 7 As shown, in some embodiments, the interior of the fixed mold mounting seat 401 and the movable mold mounting seat 404 of the present invention are both provided with a supplementary heater installation cavity 409 for convenient installation of the supplementary heater 406 and the supporting devices of the supplementary heater 406. The tail of the supplementary heater 406 extends into the interior of the supplementary heater installation cavity 409, and a power distribution component 410 is installed in the interior of the supplementary heater installation cavity 409, and all the supplementary heaters 406 are electrically connected to the power distribution component 410. The external current is first transmitted to the power distribution component 410, and then transmitted to all the supplementary heaters 406 through the power distribution component 410.

[0076] A heat compensator power supply terminal 408 is provided at the bottom of the fixed mold mounting seat 401 and the movable mold mounting seat 404. The heat compensator power supply terminal 408 is electrically connected to the distribution component 410 and the power supply mechanism 6 respectively, so that the power transmitted by the power supply mechanism 6 is transmitted to the distribution component 410 through the heat compensator power supply terminal 408, and then the power is distributed through the distribution component 410, thereby improving the stability of current transmission and centralized controllability.

[0077] like Figure 8 As shown, in some embodiments, the power supply mechanism 6 of the present invention includes a human-machine interaction device 601 and a power supply rail 602. The human-machine interaction device 601 and the power supply rail 602 are electrically connected, and the human-machine interaction device 601 is electrically connected to an external power source. When in use, the operator sets the output current, the output time of the current, and the stop time through the human-machine interaction device 601. Thereby adapting to the time of the alloy die-casting, pre-heating the casting mold 501 before die-casting, and gradually reducing the heating temperature after die-casting until the heating stops. The heater power supply terminal 408 at the bottom of the fixed mold mounting seat 401 and the movable mold mounting seat 404 is electrically connected to the movable mold mounting seat 404. The current set by the human-machine interaction device 601 is conducted to the heater 303 and the heater 406 through the power supply rail 602 to achieve heating.

[0078] like Figure 5 and Figure 8As shown, in some embodiments, a limited slot 603 is provided at the top of the power supply rail 602 of the present invention. Insulating columns 604 are provided at the four corners of the top limited slot 603 in the human-computer interaction device 601. Two electrode strips 605 parallel to the limited slot 603 are provided on the insulating column 604, and the two electrode strips 605 are respectively connected to the two poles of the power supply, so that the two electrode strips 605 become positive and negative poles or zero live lines respectively.

[0079] The heater power supply terminal 408 passes through the limiting slide groove 603 and extends to the inside of the power supply rail 602 and is electrically connected to the two electrode strips 605. At this time, the outer surface of the heater power supply terminal 408 is limited by the limiting slide groove 603 to avoid shaking and improve stability. The current is transmitted to the heater power supply terminal 408 through the two electrode strips 605 to power the heater 406.

[0080] Powering the heater 406 by the above-mentioned power supply method has the following advantages over using a sheathed wire for power supply:

[0081] The movable mold mounting base 404 needs to be frequently moved, and the sheath wire will move along with the movement of the movable mold mounting base 404, which may cause friction with the equipment and thus damage the sheath wire, resulting in power failure or short circuit.

[0082] A longer sheath wire is needed for connection to meet the movement requirements of the movable mold mounting seat 404. However, the longer sheath wire is easily entangled when the movable mold mounting seat 404 moves, and the aesthetics are insufficient.

[0083] When alloy die castings are being die-cast, the molten metal has a relatively high temperature, which will accelerate the aging of the sheath wire.

[0084] With the power supply method of the present application, the lines are less exposed, have strong resistance to high temperatures, are highly aesthetic, and will not become entangled.

[0085] like Figure 6 and Figure 7 As shown, in some embodiments, the power supply terminal 408 of the heat compensation device of the present invention includes an insulating block 4081 for improving safety. Two electric shock electrodes 4082 extend from the bottom of the insulating block 4081. The electric shock electrodes 4082 are electrically connected to the wires of the power distribution component 410, and the two electric shock electrodes 4082 are electrically connected to the two electrode strips 605 respectively to form a complete power circuit.

[0086] It should be noted that the electrode strip 605 is elastic and can exert a rebound force under the action of elasticity after being compressed. The bottoms of the two electric shock electrodes 4082 are both smooth surfaces, which reduces the friction between the electric shock electrode 4082 and the electrode strip 605 and improves the service life of the electrode strip 605 and the electric shock electrode 4082. The electric shock electrode 4082 contacts the electrode strip 605 to make the electrode strip 605 bend downward. When the electric shock electrode 4082 moves on the outer surface of the electrode strip 605, the electrode strip 605 applies pressure to the electric shock electrode 4082 from the bent position under the action of elasticity to improve the stability of the contact position.

[0087] A die-casting method of a rapid die-casting device for alloy die-castings, comprising the rapid die-casting device for alloy die-castings and the following steps:

[0088] S1. Install a casting mold 501 with a cavity that conforms to the product shape between the fixed mold mounting seat 401 and the movable mold mounting seat 404 according to product requirements;

[0089] S2, the movable mold mounting seat 404 is driven by the movable mold mounting seat driving unit 405 to bring the two casting molds 501 closer to each other, so that the cavity between the casting molds 501 is closed, and the two casting molds 501 are heated by the supplementary heat device 406 and the heat storage tube 302 is heated by the heater 303, so as to reduce the temperature difference after the molten metal enters the casting mold 501;

[0090] S3, injecting liquid metal into the casting mold 501 through the metal hydraulic injection system 2 and the liquid metal injection unit 3, and maintaining the pressure on the liquid metal so that the liquid metal completely fills the mold groove in the middle of the casting mold 501;

[0091] S4. Gradually reduce the temperature of the supplementary heat device 406 to allow the molten metal to cool down slowly and set, avoiding a cliff-like temperature drop that may cause hollowing, breakage, cracks, and other problems inside the product.

[0092] In summary, the rapid die-casting equipment for alloy die-casting parts of the present invention, by arranging a plurality of supplementary heaters 406 on the opposite surfaces of the fixed mold mounting seat 401 and the movable mold mounting seat 404, and making the supplementary heaters 406 contact with the die-casting mechanism 5, preheats the die-casting mechanism 5 before pouring the molten metal, so as to avoid solidification of the molten metal due to a large temperature difference when entering, and avoid the problem of inconsistent solidification rate causing bubbles, voids and unsatisfactory die-casting inside the product.

[0093] At the same time, a heater 303 is arranged on the outer surface of the heat storage tube 302 to supplement the heat of the molten metal that has pre-entered the die-casting mechanism 5, so as to ensure that the temperature of the molten metal does not drop significantly after being transmitted over a long distance, thereby causing poor fluidity.

[0094] The present invention provides a pre-pressing mechanism 7 at the connection between the molten metal ejection part 3 and the fixed mold mounting seat 401. When the casting is cooled and finalized, the pre-pressing mechanism 7 blocks the flow of the molten metal ejection part 3. At this time, the metal hydraulic injection system 2 continues to transport the molten metal to the inside of the molten metal ejection part 3 and continues to pressurize the molten metal. When it is necessary to transport the molten metal for die casting, the subsequent molten metal has a higher flow rate and a greater pressure, and quickly enters the internal gap of the die casting mechanism 5 for die casting. Compared with the prior art that pressurizes and transports the molten metal after die casting, it has the effect of increasing the die casting speed.

[0095] The present invention sets mold limiting grooves 407 on the top of the fixed mold mounting seat 401 and the movable mold mounting seat 404, sets a connecting block 503 on the top of the casting mold 501, and fixes the casting mold 501 by bolts to ensure the uniqueness and stability of the installation position of the casting mold 501.

[0096] At the same time, support grooves 502 that match the diameter of the support rails 403 are provided at the four corners of the casting mold 501. The four corners of the casting mold 501 are limited by the cooperation of the support grooves 502 and the support rails 403, so as to avoid the casting mold 501 from being offset due to pressure during die casting, thereby improving the accuracy of the mold. When disassembling the casting mold 501, the support grooves 502 can be separated from the limitation of the support rails 403 by rotating the casting mold 501 in the vertical direction. When installing, the reverse operation is only required so that the casting mold 501 is supported by the support rails 403 and the casting mold 501 is pushed so that the connection block 503 can be inserted into the mold limit groove 407, and no additional support force is required to support the casting mold 501, thereby achieving the effect of convenient installation of the casting mold 501.

[0097] The present invention installs a power supply rail 602 on the top of the base mechanism 1, and opens a limiting slide groove 603 on the power supply rail 602 to penetrate into the inside of the power supply rail 602, and installs two electrode strips 605 inside the power supply rail 602 to connect the positive and negative poles of the power supply. At the same time, a heater power supply terminal 408 is set at the bottom of the fixed mold mounting seat 401 and the movable mold mounting seat 404 to be electrically connected to the two electrode strips 605. During the horizontal movement of the movable mold mounting seat 404, the heater 406 can be continuously powered, which can effectively avoid the problems of line entanglement, wear and high temperature damage caused by using sheathed wire for power supply.

[0098] The present invention makes the electrode strip 605 elastic and makes the electric shock electrode 4082 contact the electrode strip 605 so that the electrode strip 605 bends downward. During the movement of the movable mold mounting seat 404, the electric shock electrode 4082 can maintain stable power supply under the elastic action of the electrode strip 605 to avoid poor contact and arc generation.

[0099] Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0100] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A rapid die-casting equipment for alloy die-casting parts, characterized in that: The invention comprises a base mechanism (1), wherein a metal hydraulic injection system (2) and a mold pulling mechanism (4) are respectively arranged on the base mechanism (1), a metal liquid injection part (3) is arranged at the output end of the metal hydraulic injection system (2), and the metal liquid injection part (3) can output the metal liquid to the mold pulling mechanism (4), and a die-casting mechanism (5) is arranged on the mold pulling mechanism (4), and the die-casting mechanism (5) performs die-casting on the metal liquid; The base mechanism (1) is also provided with a power supply mechanism (6), and the power supply mechanism (6) supplies power to the molten metal injection part (3) and the mold pulling mechanism (4) respectively; The mold pulling mechanism (4) comprises a fixed mold mounting seat (401) and a fixed support platform (402), wherein the fixed mold mounting seat (401) and the fixed support platform (402) are both arranged on the top of the base mechanism (1), and a gap is left between the fixed mold mounting seat (401) and the fixed support platform (402), and the molten metal ejection part (3) passes through the axis of the fixed mold mounting seat (401); Support guide rails (403) are arranged at the four corners of the opposite surfaces of the fixed mold mounting seat (401) and the fixed support platform (402); a slidable movable mold mounting seat (404) is arranged on the support guide rails (403); a plurality of movable mold mounting seat driving parts (405) are installed on the fixed support platform (402); the movable mold mounting seat driving parts (405) are used to drive the movable mold mounting seat (404) to move towards the fixed mold mounting seat (401); A plurality of supplementary heaters (406) are disposed on the opposite surfaces of the fixed mold mounting seat (401) and the movable mold mounting seat (404); The die-casting mechanism (5) is respectively mounted on the opposite surfaces of the fixed mold mounting seat (401) and the movable mold mounting seat (404), and the die-casting mechanism (5) is fitted with the supplementary heater (406); A pre-pressing mechanism (7) is also provided at the connection between the molten metal injection portion (3) and the fixed mold mounting seat (401).

2. The rapid die casting equipment for alloy die castings according to claim 1, characterized in that: The tops of the fixed mold mounting seat (401) and the movable mold mounting seat (404) are both provided with mold limiting grooves (407); The die-casting mechanism (5) comprises two symmetrically arranged casting molds (501), and a connecting block (503) is arranged on the top of each casting mold (501). The connecting block (503) is inserted into the mold limiting groove (407) and connected via an external locking piece.

3. The rapid die casting equipment for alloy die castings according to claim 2, characterized in that: Each of the four corners of the casting mold (501) is provided with a support groove (502), the support groove (502) is an open groove, and the inner diameter of the support groove (502) is matched with the diameter of the support guide rail (403); The casting mold (501) mounted on the fixed mold mounting seat (401) is provided with a heat storage pipe connecting hole (504) matching the outer diameter of the molten metal ejection part (3) at its axis.

4. The rapid die casting equipment for alloy die castings according to claim 1, characterized in that: The molten metal ejection part (3) comprises an ejection tube (301), the end of the ejection tube (301) is provided with a heat storage tube (302), and the end of the heat storage tube (302) passes through the middle of the fixed mold mounting seat (401); A heater (303) is provided on the outer surface of the heat storage tube (302), the heater (303) is electrically connected to a power supply mechanism (6), and the outer surface of the heater (303) is covered with a heat insulation cover (304); The pre-pressing mechanism (7) comprises a driver (701) and an extension tube (702), one end of the extension tube (702) is connected to the interior of (303), and the other end of the extension tube (702) is connected to the outer surface of the driver (701); The output end of the driver (701) is provided with a ball valve transmission rod (703), the ball valve transmission rod (703) extends to the interior of the extension tube (702) and is rotatable, the end of the ball valve transmission rod (703) is provided with a heat insulation sealing plug (704), the heat insulation sealing plug (704) seals the connection between the extension tube (702) and the heat storage tube (302), the end of the heat insulation sealing plug (704) is provided with an O-shaped valve core (705), and the O-shaped valve core (705) controls the on and off of the heat storage tube (302) by rotating; A position-limiting support body (706) is provided on the inner wall of the heat storage tube (302), and the position-limiting support body (706) supports the periphery of the O-shaped valve core (705).

5. The rapid die casting equipment for alloy die castings according to claim 1, characterized in that: A reheater installation cavity (409) is disposed inside the fixed mold installation seat (401) and the movable mold installation seat (404), the tail of the reheater (406) extends into the interior of the reheater installation cavity (409), and a power distribution component (410) is installed inside the reheater installation cavity (409), and all reheaters (406) are electrically connected to the power distribution component (410); The bottoms of the fixed mold mounting seat (401) and the movable mold mounting seat (404) are both provided with a heat supply terminal (408), and the heat supply terminal (408) is electrically connected to the power distribution component (410) and the power supply mechanism (6) respectively.

6. The rapid die casting equipment for alloy die castings according to claim 5, characterized in that: The power supply mechanism (6) comprises a human-machine interaction device (601) and a power supply rail (602), the human-machine interaction device (601) and the power supply rail (602) are electrically connected, and the human-machine interaction device (601) is electrically connected to an external power source; The heater power supply terminals (408) at the bottom of the fixed mold mounting seat (401) and the movable mold mounting seat (404) are electrically connected to the movable mold mounting seat (404).

7. The rapid die casting equipment for alloy die castings according to claim 6, characterized in that: A limiting slide groove (603) is provided at the top of the power supply rail (602), and insulating columns (604) are provided at the four corners of the limiting slide groove (603) at the top of the human-machine interaction device (601), and two electrode strips (605) parallel to the limiting slide groove (603) are provided on the insulating columns (604); The two electrode strips (605) are respectively connected to two poles of a power source; The heat supply terminal (408) passes through the limiting slide groove (603) and extends to the inside of the power supply rail (602) to be electrically connected to the two electrode strips (605) respectively.

8. The rapid die casting equipment for alloy die castings according to claim 7, characterized in that: The heat supply terminal (408) includes an insulating block (4081), and two electric shock electrodes (4082) extend from the bottom of the insulating block (4081). The two electric shock electrodes (4082) are electrically connected to two electrode strips (605) respectively.

9. The rapid die casting equipment for alloy die castings according to claim 8, characterized in that: The electrode strip (605) is elastic, the bottoms of the two electric shock electrodes (4082) are both smooth surfaces, and the electric shock electrodes (4082) abut against the electrode strip (605) to make the electrode strip (605) bend downward.

10. A die-casting method of a rapid die-casting device for alloy die-casting parts, characterized in that: A rapid die-casting device comprising the alloy die-casting according to any one of claims 1 to 9 and the following steps: Step 1: Install the casting mold (501) between the fixed mold mounting seat (401) and the movable mold mounting seat (404) according to product requirements; Step 2: The movable mold mounting seat (404) is driven by the movable mold mounting seat driving unit (405) to bring the two casting molds (501) closer to each other, and the two casting molds (501) are heated by the supplementary heat device (406) and the heat storage tube (302) is heated by the heater (303) to reduce the temperature difference after the molten metal enters the casting mold (501); Step 3: injecting liquid metal into the casting mold (501) through the metal hydraulic injection system (2) and the liquid metal injection unit (3), and maintaining the pressure on the liquid metal so that the liquid metal completely fills the mold groove in the middle of the casting mold (501); Step 4: Gradually reduce the temperature of the supplemental heater (406) to cool the molten metal and set it into shape.

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