Die-casting forming equipment for grooved heating plate

Abstract

The invention discloses a grooved heating plate die-casting forming device, and relates to the technical field of die-casting equipment, the grooved heating plate die-casting forming device comprises a die-casting machine, a driving cylinder, a movable die, a fixed die, die-casting equipment, an exhaust device, a heating plate and a heating device, the die-casting machine is in fastening connection with the driving cylinder, the die-casting machine is in sliding connection with the movable die, and the die-casting machine is in fastening connection with the fixed die; the die-casting machine is in fastening connection with the die-casting equipment, the output end of the driving air cylinder is in fastening connection with the movable die, the output end of the die-casting equipment is in fastening connection with the fixed die, the exhaust device is arranged on the fixed die, the fixed die is in fastening connection with the heating disc, and the die-casting machine serves as a main installation foundation and is used for installing and positioning other devices. The driving air cylinder outputs displacement to drive the movable die to move, the die-casting equipment injects die-casting liquid to the position between the movable die and the fixed die, the exhaust device exhausts gas between the movable die and the fixed die, the heating disc and the heating device heat the fixed die, and the cold shut phenomenon is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of die-casting equipment, in particular to a die-casting molding equipment with a grooved heating plate. Background Art

[0002] A die-casting machine is a machine used for pressure casting. Under pressure, the die-casting machine hydraulically injects molten metal into a mold for cooling and forming. After the mold is opened, a solid metal casting can be obtained.

[0003] When the die-casting liquid of the die-casting machine is poured into the mold, the temperature of the adjacent positions cannot drop too quickly. If the temperature drops too quickly, it will cause a temperature difference in the adjacent positions, which will cause a cold shut phenomenon, resulting in gaps in the casting and reducing the quality of the casting. When the gas in the mold is discharged during the pouring process, the pouring liquid may enter the pores, causing the pores to be blocked and the mold exhaust to be affected. At the same time, the existing electric heating wire has a metal tube as the outer shell, and the electric heating alloy wire is evenly distributed axially in the center of the tube. The gap between it and the metal shell is filled with magnesium oxide powder with good insulating and thermal conductive properties. However, the existing process of this type will have the phenomenon of magnesium oxide powder filling the gaps, resulting in uneven temperature conduction during heating, affecting the heating efficiency. Summary of the invention

[0004] The object of the present invention is to provide a die-casting molding device with a heating plate with grooves to solve the problems raised in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solutions: The die-casting molding equipment includes a die-casting machine, a driving cylinder, a movable mold, a fixed mold, a die-casting equipment, an exhaust device, a heating plate and a heating device. The die-casting machine and the driving cylinder are tightly connected, the die-casting machine and the movable mold are slidingly connected, the die-casting machine and the fixed mold are tightly connected, the die-casting machine and the die-casting equipment are tightly connected, the output end of the driving cylinder and the movable mold are tightly connected, the output end of the die-casting equipment and the fixed mold are tightly connected, the fixed mold is provided with an exhaust device, the fixed mold is tightly connected to the heating plate, a plurality of heating devices are provided on the heating plate, and a plurality of heating devices are tightly connected to the heating plate.

[0006] The die-casting machine is used as the main installation basis for the installation and positioning of other devices. It drives the movable mold to move by driving the cylinder output displacement until the movable mold and the fixed mold are connected, and then the die-casting liquid is injected between the movable mold and the fixed mold through the die-casting equipment. The gas between the movable mold and the fixed mold is discharged through the exhaust device until the liquid level in the mold reaches the corresponding standard, and then the exhaust and liquid injection are stopped. During the injection of the die-casting equipment, the fixed mold is heated by the heating plate and the heating device at the same time to prevent the local temperature of the die-casting liquid in the mold from dropping too fast, resulting in cold shut phenomenon, which makes the metal after die-casting have defects.

[0007] Furthermore, the fixed mold is provided with a first mounting groove, a second mounting groove, a third mounting groove, a die-casting hole and an exhaust hole, the second mounting groove and the third mounting groove are connected, the third mounting groove and the exhaust hole are connected, the first mounting groove and the exhaust device are tightly connected, the second mounting groove and the exhaust device are tightly connected, the third mounting groove and the exhaust device are tightly connected, the output end of the die-casting equipment is placed in the die-casting hole, and the output end of the die-casting equipment and the die-casting hole are tightly connected.

[0008] The first mounting groove, the second mounting groove and the third mounting groove are provided with an installation position for the exhaust device, so that the exhaust device can discharge the gas in the fixed mold. The die-casting hole is provided with an installation position for the output end of the die-casting equipment, so that the die-casting equipment can deliver the die-casting liquid to the fixed mold. The exhaust hole is provided so that the gas between the fixed mold and the movable mold can be discharged through the exhaust hole.

[0009] Furthermore, the exhaust device includes a detection device, a fixed cylinder, a fixed block, an output cylinder, and a scraper. The detection device is placed in the first mounting groove, the detection device and the first mounting groove are tightly connected, the fixed cylinder is placed in the second mounting groove, the fixed cylinder and the second mounting groove are tightly connected, the fixed block is placed in the second mounting groove, the fixed block and the second mounting groove are slidingly connected, the output end of the fixed cylinder and the fixed block are tightly connected, the output cylinder is placed in the third mounting groove, the output cylinder and the third mounting groove are tightly connected, the scraper is placed in the third mounting groove, the scraper and the third mounting groove are tightly connected, and the output cylinder and the scraper are tightly connected.

[0010] When the die-casting liquid enters the fixed mold, the pressure in the mold is detected by the detection device, and the fixed cylinder drives the fixed block to recover, so that the gas in the fixed mold can enter the exhaust hole through the third mounting groove and be discharged. When the die-casting liquid reaches the specified height, the detection device detects its pressure change, and the fixed cylinder outputs displacement to drive the fixed block to move until the fixed block blocks the third mounting groove, so that the gas no longer flows out of the third mounting groove, thereby preventing the die-casting liquid in the fixed mold from entering the exhaust hole and causing the risk of the exhaust hole being blocked. After the die-casting is completed, the fixed mold and the movable mold are separated, and the scraper is driven to move by the output displacement of the output cylinder, so that the scraper can clean the third mounting groove to prevent residual die-casting liquid from adhering to the third mounting groove and affecting the exhaust effect.

[0011] Furthermore, the detection device includes a ceramic shell, a metal upper electrode plate, a metal lower electrode plate and a dielectric medium. The ceramic shell is placed in a first mounting groove. The ceramic shell and the first mounting groove are fastened together. The metal upper electrode plate, the dielectric medium and the metal lower electrode plate are placed in the ceramic shell in sequence. A vacuum cavity exists between the dielectric medium and the metal upper electrode plate.

[0012] The metal upper electrode plate, dielectric medium and metal lower electrode plate are placed in sequence so that current flows in series, and a vacuum chamber is set up to provide conditions for the metal upper electrode plate to deform. The ceramic shell is squeezed by the die-casting liquid to deform the ceramic shell, thereby squeezing the metal upper electrode plate to deform the metal upper electrode plate, thereby affecting the change in resistance of the metal upper electrode plate, and the current of the detection device changes. The change in current corresponds to the pressure of the die-casting liquid on the ceramic shell. The size of the current value of the detection device reflects the height change of the die-casting liquid in the fixed mold, thereby achieving the effect of detecting the height of the die-casting liquid in the fixed mold.

[0013] Furthermore, the heating device includes a metal heating wire, an electromagnet, a power-changing switch, a heating power supply and a heating power supply. The metal heating wire is placed on the heating plate, the electromagnet is placed in the heating plate, the power-changing switch is placed in the heating plate, there are two metal heating wires, there are two electromagnets, the electromagnets are wrapped with wires, the power-changing switch is connected to the heating power supply wires, the heating power supply is respectively connected to the two metal heating wires, the heating power supply is respectively connected to the two metal heating wires in parallel, and the two metal heating wires are respectively connected to the wires on adjacent electromagnets.

[0014] After the heating plate starts to be heated, the metal heating wire is heated by the heating power supply. At the same time, after the heat of the die-casting liquid is transferred to the metal heating wire through the heating plate, the temperature of the metal heating wire changes. The temperature change of the metal heating wire reflects the temperature of the metal heating wire corresponding to the heating plate. When the temperature of one of the two adjacent metal heating wires is lower, the resistance value of the metal heating wire rises slowly due to its lower temperature, so that the current passing through the metal heating wire increases. The increase in the current in the metal heating wire increases the magnetism of the connected electromagnet. The increase in the magnetism of the electromagnet increases the force of the electromagnet on the power exchange switch, so that the wires on the power exchange switch and the electromagnet are connected, and the circuit connection between the electromagnet and the heating power supply is cut off. At the same time, the wires on the electromagnet are connected to the heating power supply, and the metal heating wire is quickly heated by the heating power supply, so that the temperature of the metal heating wire increases, thereby driving the temperature of the heating plate to increase, thereby preventing the die-casting liquid in the fixed mold from cold shut.

[0015] Furthermore, the electromagnet is provided with a first electrode, a second electrode, a third electrode, a return spring and a first connecting electrode, the first electrode is connected to a heating power source, the second electrode is connected to a wire on the electromagnet, the first electrode, the second electrode and the third electrode are located on the same straight line, the return spring is placed between the first electrode and the second electrode, the return spring and the first connecting electrode are tightly connected, the upper half of the first electrode is conductive, and the lower half of the third electrode is conductive.

[0016] When the metal heating wire is heated by a heating power supply, the current flows through the first electrode to the first connecting electrode and then to the second electrode, and then flows to the metal heating wire through the second electrode. When the metal heating wire with a lower temperature is heated by the heating power supply, the current flows through the heating power supply to the power switching switch to the third electrode and then to the second electrode, and then flows to the metal heating wire through the second electrode, thereby quickly heating the metal heating wire. The temperature increase of the metal heating wire transfers the heat to the heating plate, and then transfers it to the fixed mold through the heating plate, thereby heating the die-casting liquid near this position to prevent cold shut.

[0017] Furthermore, the battery exchange switch includes a support column, a steering rod, a connecting magnet, a second connecting electrode and an insulating electrode. There are two connecting magnets and second connecting electrodes. The support column is tightly connected to the heating plate. The end of the support column away from the heating plate is rotatably connected to the steering rod. Both ends of the steering rod are tightly connected to the two connecting magnets respectively. The connecting magnet is tightly connected to the adjacent second connecting electrode. The second connecting electrode is connected to the heating power supply. An insulating electrode is provided on the second connecting electrode. The second connecting electrode and the insulating electrode are tightly connected.

[0018] The support column serves as the main installation base for supporting other components. When it is necessary to switch from the heating power supply to the heating power supply, the magnetism of the electromagnet increases due to the increase in current through the lower temperature metal heating wire, thereby strengthening the magnetism on the lower temperature electromagnet, thereby strengthening the force of the electromagnet connected to the lower temperature metal heating wire on the connecting magnet, causing the connecting magnet to move toward the lower temperature direction. The movement of the connecting magnet drives the second connecting electrode and the insulating electrode to rotate until the second connecting electrode is connected to the third electrode, and the insulating electrode is connected to the second connecting electrode. At the same time, the insulating electrode squeezes the first connecting electrode to cause the first connecting electrode to move downward, thereby canceling the connection between the first connecting electrode and the second electrode.

[0019] Furthermore, a heating wire mounting groove and a mounting cavity are provided on the heating plate, the metal heating wire is placed in the heating wire mounting groove, the electromagnet and the power-changing switch are placed in the mounting cavity, the electromagnet and the mounting cavity are tightly connected, the power-changing switch and the mounting cavity are tightly connected, and the support column and the mounting cavity are tightly connected.

[0020] The heating wire installation groove provides an installation foundation for the metal heating wire, the electromagnet is installed and positioned through the installation cavity, and the support column is installed and positioned through the installation cavity.

[0021] Furthermore, a die-casting through hole is provided on the heating plate, and the output end of the die-casting equipment is placed in the die-casting through hole. The die-casting through hole and the die-casting hole are located on the same straight line. The output end of the die-casting equipment passes through the die-casting through hole and the die-casting hole in turn and enters the fixed mold.

[0022] The die-casting through hole provides an installation position for the output end of the die-casting equipment, so that the die-casting liquid output from the output end of the die-casting equipment can be directly injected into the fixed mold.

[0023] Furthermore, the groove width and groove width of the heating wire installation groove are slightly smaller than the diameter of the metal heating wire.

[0024] By setting the width of the heating wire installation groove to be slightly smaller than the diameter of the metal heating wire, when installing the metal heating wire, it is necessary to first apply a small pressure to clamp the metal heating wire in the heating wire installation groove to ensure that it can be firmly placed in the correct position, and then apply a large pressure multiple times with a small stroke to slowly embed the metal heating wire into the heating wire installation groove until the metal heating wire is completely fitted into the heating wire installation groove. By squeezing the metal heating wire multiple times, the magnesium oxide powder filled in the gap between the metal heating wire and the metal shell is filled more compactly, thereby increasing its performance.

[0025] Compared with the prior art, the present invention has the following beneficial effects: 1. An exhaust device is provided to detect the height of the die-casting liquid. When the die-casting liquid reaches the specified height, the exhaust is stopped to prevent the die-casting liquid from entering the exhaust hole and causing the exhaust hole to be blocked.

[0026] 2. A scraper is provided to clean the third mounting groove to prevent the die-casting liquid from entering the third mounting groove, thereby reducing the exhaust effect and affecting the die-casting quality.

[0027] 3. By pressing down the metal heating wire multiple times, the magnesium oxide powder in the gap between the metal heating wire and the metal shell is filled more compactly, thereby increasing the performance of metal heating.

[0028] 4. A heating device is provided to heat the lower temperature metal heating wire by comparing the temperatures of the two adjacent metal heating wires, thereby increasing the temperature of the location of the lower temperature metal heating wire, thereby increasing the temperature near the area and preventing cold shut phenomenon. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the movable mold structure of the present invention; Figure 3 It is a schematic diagram of the fixed mold structure of the present invention; Figure 4 for Figure 3 A magnified view of a part A; Figure 5 for Figure 3 A magnified view of a part B; Figure 6 It is a schematic diagram of the structure of the metal heating wire of the present invention; Figure 7 It is a schematic diagram of the structure of the heating plate of the present invention; Figure 8 It is a schematic diagram of the structure of the heating device of the present invention; Fig. 9 for Figure 8 A magnified view of a local area C.

[0030] In the figure: 1, die casting machine; 2, driving cylinder; 3, moving die; 4, fixed die; 41, first mounting slot; 42, second mounting slot; 43, third mounting slot; 44, die casting hole; 45, exhaust hole; 5, die casting equipment; 6, exhaust device; 61, detection device; 611, ceramic housing; 612, metal upper plate; 613, metal lower plate; 614, dielectric medium; 62, fixed cylinder; 63, fixed block; 64, output cylinder; 65, scraper Knife; 7. Heating plate; 711. Heating wire installation groove; 712. Installation cavity; 713. Die-cast through hole; 8. Heating device; 81. Metal heating wire; 82. Electromagnet; 821. First electrode; 822. Second electrode; 823. Third electrode; 824. Reset spring; 825. First connecting electrode; 83. Power-changing switch; 831. Support column; 832. Steering rod; 833. Connecting magnet; 834. Second connecting electrode; 835. Insulating electrode. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example: Figure 1-Figure 9 As shown, the present invention provides a technical solution for a die-casting molding equipment with a grooved heating disk, the die-casting molding equipment comprising a die-casting machine 1, a driving cylinder 2, a movable mold 3, a fixed mold 4, a die-casting device 5, an exhaust device 6, a heating disk 7 and a heating device 8, the die-casting machine 1 and the driving cylinder 2 are tightly connected, the die-casting machine 1 and the movable mold 3 are slidingly connected, the die-casting machine 1 and the fixed mold 4 are tightly connected, the die-casting machine 1 and the die-casting device 5 are tightly connected, the output end of the driving cylinder 2 and the movable mold 3 are tightly connected, the output end of the die-casting device 5 and the fixed mold 4 are tightly connected, the fixed mold 4 is provided with an exhaust device 6, the fixed mold 4 and the heating disk 7 are tightly connected, a plurality of heating devices 8 are provided on the heating disk 7, and a plurality of heating devices 8 and the heating disk 7 are tightly connected.

[0033] The die-casting machine 1 is used as the main installation basis for the installation and positioning of other devices. The movable mold 3 is driven to move by outputting displacement through the driving cylinder 2 until the movable mold 3 and the fixed mold 4 are connected, and then the die-casting liquid is injected between the movable mold 3 and the fixed mold 4 through the die-casting equipment 5. The gas between the movable mold 3 and the fixed mold 4 is discharged through the exhaust device 6 until the liquid level in the mold reaches the corresponding standard and then the exhaust and liquid injection are stopped. During the liquid injection of the die-casting equipment 5, the fixed mold 4 is heated by the heating plate 7 and the heating device 8 at the same time to prevent the die-casting liquid from dropping too fast in the local temperature of the mold, resulting in a cold shut phenomenon, which causes defects in the metal after die-casting.

[0034] like Figure 2-Figure 5 As shown, the fixed mold 4 is provided with a first mounting groove 41, a second mounting groove 42, a third mounting groove 43, a die-casting hole 44 and an exhaust hole 45, the second mounting groove 42 is connected to the third mounting groove 43, the third mounting groove 43 is connected to the exhaust hole 45, the first mounting groove 41 is tightly connected to the exhaust device 6, the second mounting groove 42 is tightly connected to the exhaust device 6, the third mounting groove 43 is tightly connected to the exhaust device 6, the output end of the die-casting equipment 5 is placed in the die-casting hole 44, and the output end of the die-casting equipment 5 is tightly connected to the die-casting hole 44.

[0035] The first mounting groove 41, the second mounting groove 42 and the third mounting groove 43 are provided with an installation position for the exhaust device 6, so that the exhaust device 6 can exhaust the gas in the fixed mold 4. The die-casting hole 44 is provided with an installation position for the output end of the die-casting equipment 5, so that the die-casting equipment 5 can deliver the die-casting liquid to the fixed mold 4. The exhaust hole 45 is provided so that the gas between the fixed mold 4 and the movable mold 3 can be discharged through the exhaust hole 45.

[0036] like Figure 2-Figure 5 As shown, the exhaust device 6 includes a detection device 61, a fixed cylinder 62, a fixed block 63, an output cylinder 64, and a scraper 65. The detection device 61 is placed in the first mounting groove 41, and the detection device 61 and the first mounting groove 41 are fastened together. The fixed cylinder 62 is placed in the second mounting groove 42, and the fixed cylinder 62 and the second mounting groove 42 are fastened together. The fixed block 63 is placed in the second mounting groove 42, and the fixed block 63 and the second mounting groove 42 are slidably connected. The output end of the fixed cylinder 62 and the fixed block 63 are fastened together. The output cylinder 64 is placed in the third mounting groove 43, and the output cylinder 64 and the third mounting groove 43 are fastened together. The scraper 65 is placed in the third mounting groove 43, and the scraper 65 and the third mounting groove 43 are fastened together. The output cylinder 64 and the scraper 65 are fastened together.

[0037] When the die-casting liquid enters the fixed mold 4, the pressure in the mold is detected by the detection device 61, and the fixed cylinder 62 drives the fixed block 63 to recover, so that the gas in the fixed mold 4 can enter the exhaust hole 45 through the third mounting groove 43 and be discharged. When the die-casting liquid reaches the specified height, the detection device 61 detects its pressure change, and the fixed cylinder 62 outputs a displacement to drive the fixed block 63 to move until the fixed block 63 blocks the third mounting groove 43, so that the gas no longer flows out of the third mounting groove 43, thereby preventing the die-casting liquid in the fixed mold 4 from entering the exhaust hole 45 and causing the risk of the exhaust hole 45 being blocked. After the die-casting is completed, after the fixed mold 4 and the movable mold 3 are separated, the output cylinder 64 outputs a displacement to drive the scraper 65 to move, so that the scraper 65 can clean the third mounting groove 43 to prevent residual die-casting liquid from adhering to the third mounting groove 43 and affecting the exhaust effect.

[0038] like Figure 4-Figure 5 As shown, the detection device 61 includes a ceramic shell 611, a metal upper electrode plate 612, a metal lower electrode plate 613 and a dielectric medium 614. The ceramic shell 611 is placed in the first mounting groove 41. The ceramic shell 611 and the first mounting groove 41 are fastened together. The metal upper electrode plate 612, the dielectric medium 614 and the metal lower electrode plate 613 are placed in the ceramic shell 611 in sequence. There is a vacuum cavity between the dielectric medium 614 and the metal upper electrode plate 612.

[0039] By placing the metal upper electrode plate 612, the dielectric medium 614 and the metal lower electrode plate 613 in sequence, the current flows in series, and the vacuum chamber is set up to provide conditions for the metal upper electrode plate 612 to deform. The ceramic shell 611 is squeezed by the die-casting liquid to deform the ceramic shell 611, thereby squeezing the metal upper electrode plate 612 to deform the metal upper electrode plate 612, thereby affecting the change in resistance of the metal upper electrode plate 612, and the current of the detection device 61 changes. The change in current corresponds to the pressure of the die-casting liquid on the ceramic shell 611. The size of the current value of the detection device 61 reflects the height change of the die-casting liquid in the fixed mold 4, thereby achieving the effect of detecting the height of the die-casting liquid in the fixed mold 4.

[0040] like Figure 6-Figure 9 As shown, the heating device 8 includes a metal heating wire 81, an electromagnet 82, a power-changing switch 83, a heating power supply and a heating power supply. The metal heating wire 81 is placed on the heating plate 7, the electromagnet 82 is placed in the heating plate 7, the power-changing switch 83 is placed in the heating plate 7, there are two metal heating wires 81, there are two electromagnets 82, the electromagnet 82 is wrapped with a wire, the power-changing switch 83 is connected to the heating power supply wire, the heating power supply is connected to the two metal heating wires 81 wires respectively, the heating power supply is connected to the two metal heating wires 81 wires in parallel respectively, and the two metal heating wires 81 are connected to the wires on adjacent electromagnets 82 respectively.

[0041] After the heating disk 7 starts to be heated, the metal heating wire 81 is heated by the heating power supply. At the same time, after the heat of the die-casting liquid is transferred to the metal heating wire 81 through the heating disk 7, the temperature of the metal heating wire 81 changes. The temperature change of the metal heating wire 81 reflects the temperature of the metal heating wire 81 corresponding to the heating disk 7. When the temperature of one of the two adjacent metal heating wires 81 is lower, the metal heating wire 81 has a lower temperature, so that its resistance value rises slowly, so that the current passing through the metal heating wire 81 increases. The increase in the current in the metal heating wire 81 increases the magnetism of the connected electromagnet 82. The increase in the magnetism of the electromagnet 82 increases the force of the electromagnet 82 on the power exchange switch 83, so that the wires on the power exchange switch 83 and the electromagnet 82 are connected, and the circuit connection between the electromagnet 82 and the heating power supply is cut off. At the same time, the wires on the electromagnet 82 are connected to the heating power supply, and the metal heating wire 81 is quickly heated by the heating power supply, so that the temperature of the metal heating wire 81 increases, thereby driving the temperature of the heating disk 7 to increase, thereby preventing the die-casting liquid in the fixed mold 4 from cold shut.

[0042] like Figure 8-Figure 9 As shown, the electromagnet 82 is provided with a first electrode 821, a second electrode 822, a third electrode 823, a return spring 824 and a first connecting electrode 825, the first electrode 821 is connected to a heating power source, the second electrode 822 is connected to a wire on the electromagnet 82, the first electrode 821, the second electrode 822 and the third electrode 823 are located on the same straight line, the return spring 824 is placed between the first electrode 821 and the second electrode 822, the return spring 824 and the first connecting electrode 825 are tightly connected, the upper half of the first electrode 821 is conductive, and the lower half of the third electrode 823 is conductive.

[0043] When the metal heating wire 81 is heated by a heating power supply, the current flows through the first electrode 821 to the first connecting electrode 825 and then to the second electrode 822, and then flows to the metal heating wire 81 through the second electrode 822. When the metal heating wire 81 at a lower temperature is heated by the heating power supply, the current flows through the heating power supply to the power switching switch 83 to the third electrode 823 and then to the second electrode 822, and then flows to the metal heating wire 81 through the second electrode 822, so as to quickly heat the metal heating wire 81. The temperature increase of the metal heating wire 81 transfers the heat to the heating plate 7, and then transfers it to the fixed mold 4 through the heating plate 7, thereby heating the die-casting liquid near this position to prevent cold shut.

[0044] like Figure 8-Figure 9As shown, the battery exchange switch 83 includes a support column 831, a steering rod 832, a connecting magnet 833, a second connecting electrode 834 and an insulating electrode 835. There are two connecting magnets 833 and second connecting electrodes 834. The support column 831 is tightly connected to the heating disk 7. The end of the support column 831 away from the heating disk 7 is rotatably connected to the steering rod 832. Both ends of the steering rod 832 are tightly connected to the two connecting magnets 833 respectively. The connecting magnet 833 is tightly connected to the adjacent second connecting electrode 834. The second connecting electrode 834 is connected to the heating power supply. The second connecting electrode 834 is provided with an insulating electrode 835. The second connecting electrode 834 and the insulating electrode 835 are tightly connected.

[0045] The support column 831 is used as the main installation base to support other components. When it is necessary to switch from the heating power supply to the heating power supply, the magnetism of the electromagnet 82 increases due to the increase in the current of the lower temperature metal heating wire 81, thereby strengthening the magnetism of the lower temperature electromagnet 82, thereby strengthening the force of the electromagnet 82 connected to the lower temperature metal heating wire 81 on the connecting magnet 833, so that the connecting magnet 833 moves toward the lower temperature direction. The movement of the connecting magnet 833 drives the second connecting electrode 834 and the insulating electrode 835 to rotate until the second connecting electrode 834 is connected to the third electrode 823, and the insulating electrode 835 is connected to the second connecting electrode 834. At the same time, the insulating electrode 835 squeezes the first connecting electrode 825 to make the first connecting electrode 825 move downward, thereby canceling the connection between the first connecting electrode 825 and the second electrode 822.

[0046] like Figure 6-Figure 7 As shown, a heating wire mounting groove 711 and a mounting cavity 712 are provided on the heating plate 7, the metal heating wire 81 is placed in the heating wire mounting groove 711, the electromagnet 82 and the power-changing switch 83 are placed in the mounting cavity 712, the electromagnet 82 and the mounting cavity 712 are tightly connected, the power-changing switch 83 and the mounting cavity 712 are tightly connected, and the support column 831 and the mounting cavity 712 are tightly connected.

[0047] The heating wire installation groove 711 provides an installation base for the metal heating wire 81 , the electromagnet 82 is installed and positioned through the installation cavity 712 , and the support column 831 is installed and positioned through the installation cavity 712 .

[0048] like Figure 6-Figure 7 As shown, a die-casting through hole 713 is also provided on the heating plate 7, and the output end of the die-casting device 5 is placed in the die-casting through hole 713. The die-casting through hole 713 and the die-casting hole 44 are located on the same straight line. The output end of the die-casting device 5 passes through the die-casting through hole 713 and the die-casting hole 44 in sequence and enters the fixed mold 4.

[0049] The die-casting through hole 713 provides an installation position for the output end of the die-casting device 5 , so that the die-casting liquid output from the output end of the die-casting device 5 can be directly injected into the fixed mold 4 .

[0050] like Figure 6 As shown, the groove width and groove width of the heating wire installation groove 711 are slightly smaller than the diameter of the metal heating wire 81.

[0051] By setting the width of the heating wire installation groove 711 to be slightly smaller than the diameter of the metal heating wire 81, when installing the metal heating wire 81, it is necessary to first apply a small pressure to clamp the metal heating wire 81 in the heating wire installation groove 711 to ensure that it can be firmly placed in the correct position. A large pressure is applied multiple times with a small stroke to slowly embed the metal heating wire 81 into the heating wire installation groove 711 until the metal heating wire 81 is completely fitted into the heating wire installation groove 711. By squeezing the metal heating wire 81 multiple times, the magnesium oxide powder filled in the gap between it and the metal shell is filled more compactly, thereby improving its performance.

[0052] The working principle of the present invention is as follows: after the die-casting equipment 5 injects die-casting liquid into the fixed mold 4, the die-casting liquid squeezes the ceramic shell 611 to deform the ceramic shell 611, thereby squeezing the metal upper electrode plate 612 to deform the metal upper electrode plate 612, thereby affecting the change in resistance of the metal upper electrode plate 612, and then causing the current of the detection device 61 to change, and the height of the die-casting liquid is detected by the current value. When the height of the die-casting liquid reaches the specified height, the detection device 61 detects its pressure change, and the fixed cylinder 62 outputs displacement to drive the fixed block 63 to move until the fixed block 63 blocks the third mounting groove 43, so that the gas no longer flows out of the third mounting groove 43, thereby preventing the die-casting liquid in the fixed mold 4 from entering the exhaust hole 45, causing the risk of the exhaust hole 45 being blocked. When the heating plate 7 starts to be heated, the metal heating wire 81 is heated by the heating power supply, and at the same time, the heat of the die-casting liquid is transferred to the After the metal heating wire 81 is turned on, the temperature of the metal heating wire 81 changes. The temperature change of the metal heating wire 81 reflects the temperature of the heating disk 7 corresponding to the metal heating wire 81. When the temperature of one of the two adjacent metal heating wires 81 is lower, due to the lower temperature of the metal heating wire 81, its resistance value rises slowly, which increases the current passing through the metal heating wire 81. The increase in the current in the metal heating wire 81 increases the magnetism of the connected electromagnet 82. The increase in the magnetism of the electromagnet 82 increases the force of the electromagnet 82 on the power exchange switch 83, so that the power exchange switch 83 and the wires on the electromagnet 82 are connected, and the circuit connection between the electromagnet 82 and the heating power supply is cut off. At the same time, the wires on the electromagnet 82 are connected to the heating power supply, and the metal heating wire 81 is quickly heated by the heating power supply, so that the temperature of the metal heating wire 81 drives the temperature of the heating disk 7 to rise, thereby preventing the die-casting liquid in the fixed mold 4 from cold shut.

[0053] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A die-casting molding equipment with a grooved heating plate, characterized in that: The die-casting molding equipment comprises a die-casting machine (1), a driving cylinder (2), a movable mold (3), a fixed mold (4), a die-casting device (5), an exhaust device (6), a heating plate (7) and a heating device (8). The die-casting machine (1) and the driving cylinder (2) are tightly connected, the die-casting machine (1) and the movable mold (3) are slidably connected, the die-casting machine (1) and the fixed mold (4) are tightly connected, the die-casting machine (1) and the die-casting device (5) are tightly connected, the output end of the driving cylinder (2) and the movable mold (3) are tightly connected, the output end of the die-casting device (5) and the fixed mold (4) are tightly connected, the fixed mold (4) is provided with an exhaust device (6), the fixed mold (4) and the heating plate (7) are tightly connected, the heating plate (7) is provided with a plurality of heating devices (8), and a plurality of the heating devices (8) and the heating plate (7) are tightly connected.

2. The die-casting molding equipment of the grooved heating plate according to claim 1, characterized in that: The fixed mold (4) is provided with a first mounting groove (41), a second mounting groove (42), a third mounting groove (43), a die-casting hole (44) and an exhaust hole (45); the second mounting groove (42) and the third mounting groove (43) are connected, the third mounting groove (43) and the exhaust hole (45) are connected, the first mounting groove (41) and the exhaust device (6) are tightly connected, the second mounting groove (42) and the exhaust device (6) are tightly connected, the third mounting groove (43) and the exhaust device (6) are tightly connected, the output end of the die-casting device (5) is placed in the die-casting hole (44), and the output end of the die-casting device (5) and the die-casting hole (44) are tightly connected.

3. The die-casting molding equipment of the grooved heating plate according to claim 2, characterized in that: The exhaust device (6) comprises a detection device (61), a fixed cylinder (62), a fixed block (63), an output cylinder (64), and a scraper (65); the detection device (61) is placed in a first mounting groove (41); the detection device (61) and the first mounting groove (41) are fastened together; the fixed cylinder (62) is placed in a second mounting groove (42); the fixed cylinder (62) and the second mounting groove (42) are fastened together; the fixed block (63) is placed in the second mounting groove (42); ), the fixed block (63) is slidably connected to the second mounting groove (42), the output end of the fixed cylinder (62) is firmly connected to the fixed block (63), the output cylinder (64) is placed in the third mounting groove (43), the output cylinder (64) and the third mounting groove (43) are firmly connected, the scraper (65) is placed in the third mounting groove (43), the scraper (65) and the third mounting groove (43) are firmly connected, and the output cylinder (64) and the scraper (65) are firmly connected.

4. The die-casting molding equipment of the grooved heating plate according to claim 3, characterized in that: The detection device (61) comprises a ceramic housing (611), a metal upper electrode plate (612), a metal lower electrode plate (613) and a dielectric medium (614); the ceramic housing (611) is placed in a first mounting groove (41); the ceramic housing (611) and the first mounting groove (41) are tightly connected; the metal upper electrode plate (612), the dielectric medium (614) and the metal lower electrode plate (613) are placed in the ceramic housing (611) in sequence; and a vacuum cavity exists between the dielectric medium (614) and the metal lower electrode plate (613).

5. The die-casting molding equipment of the grooved heating plate according to claim 1, characterized in that: The heating device (8) comprises a metal heating wire (81), an electromagnet (82), a power-changing switch (83), a heating power supply and a heating power supply. The metal heating wire (81) is placed on a heating plate (7), the electromagnet (82) is placed in the heating plate (7), the power-changing switch (83) is placed in the heating plate (7), there are two metal heating wires (81), there are two electromagnets (82), the electromagnet (82) is wound with a wire, the power-changing switch (83) is connected to the heating power supply wire, the heating power supply is respectively connected to the two metal heating wires (81) wires, the heating power supply is respectively connected to the two metal heating wires (81) wires in parallel, and the two metal heating wires (81) are respectively connected to the wires on adjacent electromagnets (82).

6. The die-casting molding equipment of the grooved heating plate according to claim 5, characterized in that: The electromagnet (82) is provided with a first electrode (821), a second electrode (822), a third electrode (823), a return spring (824) and a first connecting electrode (825); the first electrode (821) is connected to a heating power source; the second electrode (822) is connected to a wire on the electromagnet (82); the first electrode (821), the second electrode (822) and the third electrode (823) are located on the same straight line; the return spring (824) is disposed between the first electrode (821) and the second electrode (822); the return spring (824) and the first connecting electrode (825) are tightly connected; the upper half of the first electrode (821) is conductive; and the lower half of the third electrode (823) is conductive.

7. The die-casting molding equipment of the grooved heating plate according to claim 6, characterized in that: The power exchange switch (83) comprises a support column (831), a steering rod (832), a connecting magnet (833), a second connecting electrode (834) and an insulating electrode (835); there are two connecting magnets (833) and two second connecting electrodes (834); the support column (831) is tightly connected to the heating disk (7); one end of the support column (831) away from the heating disk (7) is rotatably connected to the steering rod (832); both ends of the steering rod (832) are tightly connected to the two connecting magnets (833), the connecting magnet (833) is tightly connected to the adjacent second connecting electrode (834), the second connecting electrode (834) is connected to a heating power source, an insulating electrode (835) is provided on the second connecting electrode (834), and the second connecting electrode (834) and the insulating electrode (835) are tightly connected.

8. The die-casting molding equipment of the grooved heating plate according to claim 7, characterized in that: The heating plate (7) is provided with a heating wire installation groove (711) and an installation cavity (712); the metal heating wire (81) is placed in the heating wire installation groove (711); the electromagnet (82) and the power-changing switch (83) are placed in the installation cavity (712); the electromagnet (82) and the installation cavity (712) are tightly connected; the power-changing switch (83) and the installation cavity (712) are tightly connected; and the support column (831) and the installation cavity (712) are tightly connected.

9. The die-casting molding equipment of the grooved heating plate according to claim 8, characterized in that: The heating plate (7) is also provided with a die-casting through hole (713), the output end of the die-casting device (5) is placed in the die-casting through hole (713), the die-casting through hole (713) and the die-casting hole (44) are located on the same straight line, and the output end of the die-casting device (5) passes through the die-casting through hole (713) and the die-casting hole (44) in sequence to enter the fixed mold (4).

10. The die-casting molding equipment of the heating plate with grooves according to claim 9, characterized in that: The groove width and groove width of the heating wire installation groove (711) are slightly smaller than the diameter of the metal heating wire (81).

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