A magnesium alloy die set and a double die set die casting machine

Abstract

The present application discloses a magnesium alloy die set, including a workbench and a melt glue cylinder installed on the workbench, a conveying mechanism and an injection die set, wherein the conveying mechanism cooperates with the melt glue cylinder, and the injection die set cooperates with the conveying mechanism. When performing magnesium alloy die casting, the magnesium alloy die set is suitable for performing two processes, wherein the first process: the conveying mechanism is suitable for conveying and filling magnesium particles into the melt glue cylinder, and then forming magnesium metal liquid under the smelting of the melt glue cylinder; the second process: the injection die set is suitable for cooperating with the conveying mechanism so that the magnesium metal liquid is injected from the injection head of the melt glue cylinder into the die casting machine body; and a double-die die casting machine is also disclosed. The beneficial effects of the present application: the smelting process of the magnesium metal liquid can be realized by providing the melt glue cylinder, and the melt glue cylinder is directly connected to the die casting machine body, which is convenient for conveying the magnesium metal liquid and can also reduce the heat loss, thereby improving the efficiency of the entire die casting process and reducing the cost.

Description

Technical Field

[0001] The present application relates to the technical field of die-casting machines, and in particular to a magnesium alloy die set and a double-die set die-casting machine. Background Art

[0002] Die casting machine is a machine used for pressure casting. It includes hot press chamber and cold press chamber. Later, it was divided into two types: vertical and horizontal. The die casting machine hydraulically injects molten metal into the mold under pressure and cools it into shape. After the mold is opened, a solid metal casting can be obtained. It was originally used for die casting lead type.

[0003] In the process of product die-casting, different products have different materials. For example, aluminum alloy die-casting and magnesium alloy die-casting all use cold chamber die-casting: the pressure chamber of the cold chamber die-casting machine is separated from the insulation furnace; during die-casting, the liquid metal is taken out from the insulation furnace and poured into the pressure chamber for die-casting. Especially for magnesium alloy die-casting, the metal liquid state during die-casting is a solid-liquid mixed state, so it is inconvenient to add it from the insulation furnace to the die-casting machine body; on the other hand, in order to prevent the metal magnesium and the alloy from being oxidized by air, SF6 protective gas needs to be used in the smelting and die-casting process of magnesium alloy, which will increase the production cost. For this reason, a magnesium alloy die set and a double-die die-casting machine are proposed to solve the above technical problems. Summary of the invention

[0004] One of the purposes of the present application is to provide a magnesium alloy module.

[0005] Another object of the present application is to provide a dual-die die-casting machine.

[0006] In order to achieve the above objectives, the technical solution adopted in the present application is: a magnesium alloy mold group, including a workbench and a melt cylinder, a conveying mechanism and an injection mold group installed on the workbench, the conveying mechanism cooperates with the melt cylinder, and the injection mold group cooperates with the conveying mechanism. When performing magnesium alloy die-casting, the magnesium alloy mold group is suitable for performing two processes, wherein the first process: the conveying mechanism is suitable for conveying and filling magnesium particles into the melt cylinder, and then forming magnesium liquid under the smelting of the melt cylinder; the second process: the injection mold group is suitable for cooperating with the conveying mechanism so that the magnesium liquid is injected from the injection head of the melt cylinder into the die-casting machine body.

[0007] Preferably, the conveying mechanism includes a mounting block, a screw and a driving device, the mounting block is horizontally slidably mounted on the workbench, the driving device is mounted on the mounting block, the screw is located in the melt barrel, the first end of the screw is rotatably set on the mounting block and is splined to the output shaft of the driving device, and the mounting block is matched with the injection mold group; when performing the first process, the driving device is suitable for driving the screw to rotate and convey and fill the metal particles entering the feed port of the melt barrel into the melt barrel, and then the screw moves in the direction away from the melt barrel under the reaction force of the metal particles, and the injection mold group is suitable for driving the mounting block away from the melt barrel; when performing the second process, the injection mold group is suitable for driving the mounting block close to the melt barrel, and then the magnesium metal liquid is injected from the melt barrel under the action of the screw head at the second end of the screw.

[0008] Preferably, the injection module group includes an injection seat and an injection cylinder, the injection seat is installed on the workbench and corresponds to the mounting block, the melt cylinder is fixedly installed on the injection seat, the cylinder body of the injection cylinder is hingedly installed with a first connecting seat, the piston end of the injection cylinder is hingedly installed with a second connecting seat, the first connecting seat is installed on the injection seat, and the second connecting seat is installed on the mounting block.

[0009] Preferably, the screw head comprises a rod head, a blocking portion, a check ring, a sleeve and a washer, the rod head is installed on the second end of the screw rod by threading, the blocking portion and the washer are both arranged on the outside of the rod head and a gap is formed therebetween, a plurality of material grooves are arranged on the outside of the blocking portion, the sleeve is sleeved on the outside of the check ring and abuts against the inner wall of the melt cylinder, the check ring is sleeved on the rod head and corresponds to the gap, the axial length of the check ring is less than the length of the gap, and a flow channel connected to the material groove is formed between the check ring and the gap; when the magnesium metal liquid is conveyed, the check ring abuts against the blocking portion, and then a gap is formed between the check ring and the washer, so that the magnesium metal liquid passes through the gap, the flow channel and the material port and is injected into the injection head; when the magnesium metal liquid refluxes, the check ring is suitable for abutting against the washer under the flow force, so that the gap is reduced or closed, thereby buffering or blocking the reflux force.

[0010] A dual-module die-casting machine comprises a die-casting body, an injection module and the above-mentioned magnesium alloy die, wherein the injection module is installed on the side of the die-casting body and is arranged in a straight line with the die-casting body, and the melt cylinder is matched and connected with the injection module and is arranged vertically with the die-casting body; when performing the first mode die-casting, the injection module is suitable for injecting the added aluminum metal liquid into the die-casting body for molding; when performing the second mode die-casting, the melt cylinder is suitable for first injecting the magnesium metal liquid into the injection module, and then the injection module is suitable for injecting the magnesium metal liquid into the die-casting body for molding.

[0011] Preferably, a thrust mechanism is installed on the die-casting machine body, and the thrust mechanism cooperates with the injection module and is arranged in a straight line corresponding to the molten rubber cylinder; the thrust mechanism is suitable for driving the injection module and the molten rubber cylinder to abut against each other so that the injection module and the molten rubber cylinder maintain a sealed state.

[0012] Preferably, the injection module includes an injection barrel, an extrusion barrel and an injection nozzle. The injection barrel is installed on the fixed mold plate of the die-casting machine body. The ends of the injection barrel are connected to the extrusion barrel and the injection nozzle in sequence. The injection nozzle cooperates with the cavity of the die-casting machine body, and the extrusion barrel cooperates and is connected with the melt barrel.

[0013] Preferably, the inner diameter of the injection head is smaller than the inner diameter of the extrusion barrel, and the inner diameter of the injection nozzle is smaller than the gate diameter in the cavity.

[0014] Preferably, the thrust mechanism includes a thrust cylinder and a push head, wherein the thrust cylinder is installed on the fixed template and a push head is installed on one end of the piston rod; the thrust cylinder is suitable for driving the push head to abut against and act on the extrusion barrel, thereby making the extrusion barrel and the injection head abut against and seal with each other.

[0015] Preferably, the fixed template is penetrated by limit rods symmetrically distributed up and down, and the magnesium alloy module cooperates with the first end of the limit rod to achieve limit locking of the magnesium alloy module; the thrust mechanism is locked and installed by the second end of the limit rod.

[0016] Compared with the prior art, the beneficial effects of this application are:

[0017] (1) The present invention can realize the smelting process of magnesium metal liquid by providing a melt cylinder, and the melt cylinder is directly connected to the die-casting machine body, which is convenient for conveying magnesium metal liquid and can also reduce heat loss, thereby improving the efficiency of the entire die-casting process and reducing costs; and due to the sealing performance of the melt cylinder, the die-casting process does not need to use SF6 protective gas, which reduces costs while improving safety and achieving the purpose of environmental protection.

[0018] (2) The present invention realizes two modes of magnesium alloy injection and aluminum alloy injection by installing a magnesium melt module on an existing cold chamber die-casting machine, thereby realizing the use of two different forms of molten metal on the same die-casting machine. In this way, there is no need to use two independent die-casting machines, which significantly reduces equipment costs and space occupancy.

[0019] (3) Compared with traditional cold chamber die casting, the magnesium alloy injection molding module can significantly reduce energy consumption by significantly lowering the operating temperature, reducing the magnesium content of the product casting and the high power of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the local structure of the present invention.

[0022] Figure 3 For the present invention Figure 2 Schematic diagram of the cross-sectional structure.

[0023] Figure 4 It is a schematic diagram of the enlarged structure of point A of the present invention.

[0024] Figure 5 It is a schematic diagram of the installation structure between the melt module, the injection module and the thrust mechanism of the present invention.

[0025] Figure 6 It is a schematic diagram of the overall structure of the melt glue module of the present invention.

[0026] Figure 7 It is a schematic diagram of the specific structure of the melt glue module of the present invention.

[0027] Figure 8 This is a schematic diagram of the principle of injecting and transporting magnesium particles according to the present invention.

[0028] Fig. 9 It is a schematic diagram of the principle of the present invention when the magnesium particles are melted and then injected.

[0029] Fig.10 It is a schematic diagram of the screw structure of the present invention.

[0030] Fig.11 It is a schematic diagram of the principle of the magnesium material of the present invention when it flows through the screw head and when it flows back.

[0031] Fig.12 It is a schematic diagram of the specific structure of the screw head of the present invention.

[0032] Fig.13 It is a schematic diagram of the mold bridge assembly of the present invention.

[0033] In the figure: 1. die-casting machine body; 2. fixed plate; 3. injection module; 301. injection barrel; 302. extrusion barrel; 303. injection nozzle; 4. melt module; 401. melt barrel; 402. conveying mechanism; 4021. mounting block; 4022. screw; 4023. driving device; 403. injection module group; 4031. injection seat; 4032. injection cylinder; 5. thrust mechanism; 501. thrust cylinder; 502. ejector; 6. injection head; 7. limit rod; 8. feed port; 9. screw head; 901. rod head; 902. blocking part; 903. gasket; 904. check ring; 905. collar; 10. trough; 11. flow channel; 12. gap; 13. mold bridge assembly; 14. mold bridge; 15. tray cylinder; 16. injection plate. DETAILED DESCRIPTION

[0034] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0035] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present application.

[0036] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0037] One of the preferred embodiments of the present application is as follows: Figures 1 to 13 As shown, a magnesium alloy module includes a workbench and a melt module 4 installed on the workbench, wherein the melt module 4 includes a melt cylinder 401, a conveying mechanism 402 and an injection module 403, the melt cylinder 401 is installed on the workbench, the conveying mechanism 402 is installed on the workbench and cooperates with the melt cylinder 401, and the injection module 403 is installed on the workbench and cooperates with the conveying mechanism 402.

[0038] It can be understood that when magnesium alloy die casting is performed, the melt module 4 will perform two processes. In the first process, solid magnesium metal particles can be put into the melt cylinder 401 from the feed port 8, and then the magnesium particles are transported and filled in the melt cylinder 401 through the conveying mechanism 402, such as Figure 8 As shown (it should be known that at this time, the magnesium metal particles are equivalent to squeezing out the air in the melt cylinder 401, which will avoid the subsequent oxidation of the magnesium alloy by the air), and then the heating component on the melt cylinder 401 will melt the metal particles to obtain magnesium liquid, that is, semi-solid metal liquid (liquid encapsulating solid particles). Second process: At this time, the injection mold group 403 and the conveying mechanism 402 cooperate to inject the magnesium liquid from the melt cylinder 401 (that is, the injection head 6 at the left end of the melt cylinder 401) into the die-casting machine body 1 for the subsequent die-casting process.

[0039] It can be seen that the melting process of magnesium metal liquid can be realized through the melt cylinder 401, and the melt cylinder 401 is directly connected to the die-casting machine body 1, which can reduce the loss of heat while facilitating the transportation of magnesium metal liquid, thereby improving the efficiency of the entire die-casting process and reducing costs. In addition, the sealing of the melt cylinder 401 can make it unnecessary to use SF6 protective gas during the die-casting process, which reduces costs while improving safety and achieving the purpose of environmental protection. On the other hand, since the melt cylinder 401 is smaller and more compact than the insulation furnace of the prior art, it can greatly reduce the operating temperature, reduce the magnesium content of the product casting and the high power of the system, and significantly reduce energy consumption.

[0040] As a further description of the above embodiment: the conveying mechanism 402 includes a mounting block 4021, a screw rod 4022 and a driving device 4023 (such as a motor), wherein the screw rod 4022 is similar to a spiral auger structure, and the screw rod 4022 can be rotated to convey the material. The mounting block 4021 is horizontally slidably mounted on a workbench (such as Figure 2 As shown, the melt glue module 4 is completely installed on the workbench), the driving device 4023 is installed on the mounting block 4021, the screw 4022 is located in the melt glue cylinder 401, and the first end (right end) of the screw 4022 is rotatably set on the mounting block 4021 and connected to the output shaft of the driving device 4023 through a spline, that is, the screw 4022 can not only rotate axially, but also move axially. The mounting block 4021 is matched and connected with the injection module 403.

[0041] It is understandable that when performing the first process, Figure 8As shown, magnesium particles are transported, and the driving device 4023 can drive the screw 4022 to rotate, thereby transporting the magnesium particles entering the feed port 8 of the melt tube 401 and distributing them into the melt tube 401. At this time, the feed port 8 can be closed to ensure the sealing of the melt tube 401. We know that while the screw 4022 has a transporting force on the magnesium particles, the magnesium particles will also have a reaction force on the screw 4022, thereby causing the screw 4022 to move in a direction away from the melt tube 401 under this reaction force; of course, at the same time, the injection module 3 will also drive the mounting block 4021 away from the melt tube 401, thereby causing the driving device 4023 to also move away and not interfere with the movement of the screw 4022. It should be noted that the retreat of the screw 4022 in this process is to prepare for the injection of magnesium material in the second process.

[0042] When the second process is carried out, Fig. 9 As shown, at this time, the injection module 403 will drive the mounting block 4021 to reset and approach the melt cylinder 401, that is, the screw 4022 will move toward the inside of the melt cylinder 401 under the action of the driving device 4023, and while moving, the magnesium material will be injected into the injection head 6 under the action of the screw head 9 at the second end (left end) of the screw 4022, and then injected into the die-casting machine body 1 from the injection head 6.

[0043] As a further description of the above embodiment: Fig. 9 As shown, the injection module 403 includes an injection seat 4031 and an injection cylinder 4032. The injection seat 4031 is installed on the workbench and corresponds to the mounting block 4021. The melt cylinder 401 is fixedly installed on the injection seat 4031. The cylinder body of the injection cylinder 4032 is hingedly installed with a first connecting seat, and the piston end of the injection cylinder 4032 is hingedly installed with a second connecting seat. The first connecting seat is installed on the injection seat 4031, and the second connecting seat is installed on the mounting block 4021.

[0044] It is understandable that the cylinder body and piston rod of the shooting and displacement oil cylinder 4032 are both hingedly mounted on two connection seats, and the two connection seats are respectively fixedly mounted on the injection seat 4031 and the mounting block 4021, thereby realizing the fixed installation of the shooting and displacement oil cylinder 4032. Through such hinged installation, its function is: for example, when the mounting block 4021 fails, the second connection seat can be disassembled at this time, and then the shooting and displacement oil cylinder 4032 can be rotated around the piston rod and away from the mounting block 4021, so that the interference caused by the shooting and displacement oil cylinder 4032 when the mounting block 4021 is repaired can be eliminated. Moreover, only the cylinder body of the shooting and displacement oil cylinder 4032 needs to be disassembled, which is simple and convenient, and at the same time, the installation efficiency of the shooting and displacement oil cylinder 4032 can be greatly improved after the later maintenance.

[0045] In one of the embodiments of the present application, Figures 10 to 12As shown, the screw head 9 includes a rod head 901, a blocking portion 902, a check ring 904, a collar 905 and a washer 903. The rod head 901 is installed on the second end (left end) of the screw rod 4022 through a thread, thereby realizing quick disassembly and assembly between the screw head 9 and the screw rod 4022; the blocking portion 902 and the washer 903 are both arranged on the outside of the rod head 901 and a gap is formed therebetween, a plurality of material grooves 10 are arranged on the outside of the blocking portion 902, the collar 905 is sleeved on the outside of the check ring 904 and abuts against the inner wall of the melt cylinder 401, the check ring 904 is sleeved on the rod head 901 and corresponds to the gap, the axial length of the check ring 904 is less than the length of the gap, and a flow channel 11 connected to the material groove 10 is formed between the inside of the check ring 904 and the gap.

[0046] It is understandable that the flow direction of the magnesium material in the melt cylinder 401 is as follows: Fig.11 As shown in (c) (i.e., the direction of the arrow): Since the check ring 904 is movably sleeved on the rod head 901, the check ring 904 will abut against the blocking portion 902 on the left side under the flow force of the magnesium material, and a gap 12 will be formed between the check ring 904 and the gasket 903 on the right side. Under the conveying action of the screw 4022, the magnesium material on the right side of the melt cylinder 401 will flow from the gap 12, the flow channel 11 and the material trough 10 to the storage chamber on the left side of the melt cylinder 401, as shown in FIG. Figure 8 shown.

[0047] When injecting, Fig. 9 As shown, the screw head 9 moves to the left under the action of the screw rod 4022, and then the magnesium material in the storage chamber is injected from the injection head 6 into the injection module 3. Of course, during the injection process, due to the reaction force of the magnesium material, the magnesium material will flow back, such as Fig.11 As shown in (d) in the figure, the check ring 904 will resist the right side gasket 903 under the reaction force, so that the gap 12 will be closed, thereby blocking the magnesium material and preventing the backflow, thereby improving the utilization rate of the magnesium material. Fig.12 As shown, a plurality of gaps can be provided on the right side of the check ring 904, so that when the check ring 904 and the gasket 903 are against each other, the gap 12 will be reduced and will not be closed due to the existence of the gap, so as to prevent the magnesium material from acting too hard and causing the melt cylinder 401 or the extrusion cylinder 302 to leak, that is, at this time, the gap 12 can buffer the reflux force of the magnesium material while ensuring that the magnesium material is fully injected, thereby ensuring the smooth progress of the entire die-casting process. Of course, in the specific setting of the gap 12, whether to make the gap 12 smaller or closed during reflux, the technicians in this field can choose according to the actual situation.

[0048] In the prior art, we know that the molten metal of aluminum alloy die-casting is pure liquid. As mentioned above, for magnesium alloy, the molten metal of its die-casting is a mixed state of solid and liquid. Therefore, products of the two materials require two independent corresponding die-casting machines, which increases the equipment cost and floor space.

[0049] Therefore, in order to solve the above-mentioned technical problems, another aspect of the present application also provides a dual-module die-casting machine, including a die-casting body 1, an injection module 3 and the above-mentioned magnesium alloy module, wherein the injection module 3 is installed on the side of the die-casting body 1 and is arranged in a straight line with the die-casting body 1, and the melt cylinder 401 is cooperatively connected with the injection module 3 and is arranged vertically with the die-casting body 1.

[0050] It is understandable that when the die-casting machine is in use, it has two die-casting modes (i.e., magnesium-aluminum dual-shot modes). When performing the first mode of die-casting (i.e., aluminum alloy die-casting), the shot module 3 can inject the added first-form molten metal (i.e., aluminum molten metal) into the die-casting machine body 1 for molding. When performing the second mode of die-casting (i.e., magnesium alloy die-casting), the melt module 4 can first inject the second-form molten metal (i.e., magnesium molten metal) into the shot module 3, and then the shot module 3 can inject the second-form molten metal into the die-casting machine body 1 for molding. This enables the use of two different forms of molten metal on the same die-casting machine, so that there is no need to use two independent die-casting machines, thereby saving equipment costs and space.

[0051] Specifically in this application, there are two modes, namely aluminum alloy die-casting and magnesium alloy die-casting. Therefore, in the first mode of die-casting, we know that the melting point of aluminum alloy is relatively high, so hot chamber die-casting machines cannot be used for production, and only cold chamber die-casting can be used, that is, the aluminum alloy metal is melted outside the machine, and then the melted first form of molten metal (i.e. aluminum liquid) is added to the injection module 3, and the first molten metal is injected into the die-casting machine through the injection module 3. When the second mode (magnesium alloy) die-casting is performed, the second form of molten metal (i.e. magnesium liquid) is first added to the injection module 3 through the melt module 4, and then the second form of molten metal is injected into the die-casting machine through the injection module 3. In other words, the two forms of molten metal share one injection module 3 during die-casting, and thus two different die-casting modes can be flexibly realized.

[0052] As a further description of the above embodiment: Figure 4As shown, the injection module 3 includes an injection barrel 301, an extrusion barrel 302 and an injection nozzle 303. The injection barrel 301 is installed on the fixed mold plate 2 of the die-casting machine body 1. The ends of the injection barrel 301 are connected with the extrusion barrel 302 and the injection nozzle 303 in sequence. The injection nozzle 303 cooperates with the cavity of the die-casting machine body 1, and the extrusion barrel 302 cooperates with the melt module 4. It can be understood that the melt module 4 transports the melted second form of molten metal to the extrusion barrel 302 and enters the injection barrel 301, and then injects the second form of molten metal into the die-casting machine through the injection punch in the injection module 3; it should be noted that how the injection module 3 injects the molten metal in the injection barrel 301 into the die-casting machine is also common knowledge known to those skilled in the art, so it will not be described in detail.

[0053] Furthermore, the inner diameter of the injection head 6 is smaller than the inner diameter of the extrusion barrel 302, and the inner diameter of the injection nozzle 303 is smaller than the diameter of the gate in the cavity. Of course, the gate is not shown in this application, but this is also common knowledge for those skilled in the art. Specifically, the ball diameter of the injection head 6 is slightly smaller than the ball diameter of the extrusion barrel 302, and the diameter of the injection nozzle 303 is slightly smaller than the gate diameter. This structural design can avoid the accumulation of cold material at the gate and prevent the molten magnesium material from spraying out, which can achieve a good sealing effect and smooth flow of magnesium material.

[0054] like Figure 4 and Figure 5 As shown, the entire melt module 4 is vertically arranged with the die-casting machine body 1, and the melt module 4 is butted and connected by the injection head 6 against the extrusion barrel 302; and the extrusion barrel 302 may shake during the long-term extrusion process, thereby affecting the connection and sealing effect of the two.

[0055] Therefore, in order to solve the above technical problems, in one embodiment of the present application, Figure 1 and Figure 4 As shown, a thrust mechanism 5 is installed on the die casting machine body 1, and the thrust mechanism 5 cooperates with the injection module 3 and is arranged in a straight line corresponding to the melt module 4. It can be understood that at this time, the thrust mechanism 5 can make the injection module 3 and the melt module 4 always match each other, so that the injection module 3 and the melt module 4 are always kept in a sealed state, thereby ensuring the stable transportation of magnesium material during the die casting process.

[0056] Specifically, Figure 4As shown, the thrust mechanism 5 includes a thrust cylinder 501 and a push head 502. The thrust cylinder 501 is installed on the fixed mold plate 2 and the push head 502 is installed at one end of the piston rod. It can be understood that when die casting is performed, the thrust cylinder 501 extends and drives the push head 502 to abut against the outside of the extrusion barrel 302, that is, during the injection process, the thrust cylinder 501 pushes the push head 502 to always apply pressure to the extrusion barrel 302, and at the same time acts on the injection head 6 and the melt cylinder 401, playing a sealing role, thereby ensuring the stable transportation of magnesium material during the die casting process. Of course, the extension and retraction action of the thrust cylinder 501 is precisely controlled by the control system to adapt to the different pressure requirements of different die casting stages.

[0057] In this embodiment, Figure 5 As shown in (a) and (b), in order to further improve the stability of the installation of the melt module 4 and the convenience of the installation of the thrust cylinder 501, a limit rod 7 symmetrically distributed up and down is installed in the fixed mold plate 2. Specifically, a connecting rod can also be installed on the upper and lower sides of the melt module 4, and then the connecting rod is docked and fixed with the first end (left end) of the limit rod 7, so that the limit locking of the melt module 4 can be achieved. A vertical plate can be fixedly installed on the second end (right end) of the limit rod 7 by bolts, and then the thrust cylinder 501 is fixedly installed on the vertical plate to achieve the locking installation of the thrust mechanism 5. It can be seen that by setting a pair of limit rods 7, the limit locking of the melt module 4 and the locking installation of the thrust mechanism 5 can be achieved, and the linear setting of the thrust mechanism 5 and the melt module 4 can be ensured, thereby ensuring the stability and safety of the entire die-casting process.

[0058] In this embodiment, Figure 1 As shown, the injection mold plate 16 is installed on the left side of the fixed mold plate 2, that is, inside the die casting machine body 1. In actual use, for different models of products, the models of the injection mold plate 16 are different, and the fixed mold plate 2 is fixedly installed, which will cause inconvenience when replacing the injection mold plate 16. It should be known that a fixed mold insert is installed on the injection mold plate 16, and a movable mold plate and a movable mold insert connected to the movable mold plate are installed in the area corresponding to the injection mold plate 16 in the die casting machine body 1. The fixed mold insert and the movable mold insert cooperate to form a die casting machine cavity (i.e., a mold cavity), which is also common knowledge known to those skilled in the art.

[0059] Therefore, in order to solve the above technical problems, Fig.13 As shown, the entire mold bridge assembly 13 can be installed on the frame inside the die-casting machine body 1, the fixed mold plate 2 is fixedly installed at the right side of the mold bridge assembly 13, the mold bridge 14 is slidably set in the mold bridge assembly 13, the injection mold plate 16 is installed on the mold bridge 14, and a pallet cylinder 15 is installed at the bottom end of the fixed mold plate 2, and one end of the piston rod of the pallet cylinder 15 is connected to the mold bridge 14.

[0060] It is understandable that when the pallet cylinder 15 is shortened so that the injection mold plate 16 is close to and abuts against the fixed mold plate 2, the injection mold plate 16 can be installed and used. When disassembling, the injection mold plate 16 is first extended by the pallet cylinder 15 to move away from the fixed mold plate 2, and then the injection mold plate 16 and the mold bridge 14 can be disassembled. It should be known that compared with the prior art, the original installation between the injection mold plate 16 and the fixed mold plate 2 is actually designed to be installed between the injection mold plate 16 and the mold bridge 14, and the position of the mold bridge 14 can be moved and adjusted under the action of the pallet cylinder 15, so as to facilitate the disassembly and assembly of the fixed mold plate 2 in the later stage.

[0061] The working principle of the present invention is:

[0062] First, the user selects the corresponding mode according to the injection molded product. For example, the aluminum alloy injection mode is selected through the operation screen on the die-casting machine, which means that there is no need to use magnesium alloy injection. Therefore, the built-in parameters of the system will be suitable for aluminum alloy die-casting. Specifically, the molten aluminum liquid from the outside is added to the injection module 3, and then the aluminum liquid is injected into the die-casting machine through the injection module 3 for molding.

[0063] When the magnesium alloy injection mode is adjusted, the magnesium raw material undergoes two processes under the action of the melt module 4, wherein the first process is: Figure 8 As shown, magnesium particles are fed into the melt tube 401 from the feed port 8 (corresponding to the upper end of the injection seat 4031), and the driving device 4023 drives the screw 4022 to rotate and store materials. At this time, the screw 4022 retreats due to the reaction of squeezing the magnesium particles, and the mounting block 4021 also retreats under the action of the injection cylinder 4032. After the storage is completed, the mounting block 4021 resets and advances under the action of the injection cylinder 4032, pushing the semi-molten magnesium in the melt tube 401 from the injection head 6 into the extrusion tube 302, and finally injecting the semi-solid magnesium into the mold through the injection module 3 to complete the entire injection process.

[0064] It should be noted that the injection barrel 301, the extrusion barrel 302, the injection nozzle 303, the melt barrel 401, and the injection head 6 are all equipped with heating coils on the outside to heat the material to a semi-solid state during the transportation process and keep the temperature of the magnesium liquid constant. At the same time, compared with the traditional cold chamber die-casting machine, the invention can significantly reduce energy consumption by greatly reducing the working temperature, reducing the magnesium content of the product casting and the high power of the system. At the same time, the magnesium melt module 4 is in a fully enclosed environment to complete the injection, and there is no need to use SF6 protective gas, which reduces costs while improving safety and achieving the purpose of environmental protection. At the same time, by simplifying the injection system and separating the melt structure from the injection structure, the magnesium melt module 4 can be easily installed on the existing cold chamber die-casting machine, reducing the equipment configuration and maintenance costs, and achieving smooth and continuous production.

[0065] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A double-die die-casting machine, characterized in that: Including die-casting body, injection module and magnesium alloy module, The magnesium alloy module comprises: Workbench; A melt-adhesive cylinder, the melt-adhesive cylinder being mounted on the workbench; A conveying mechanism, which is installed on the workbench and cooperates with the melt cylinder; and An injection mold assembly, the injection mold assembly is installed on the workbench and cooperates with the conveying mechanism; when performing magnesium alloy die-casting, the magnesium alloy mold assembly is suitable for performing two processes, wherein the first process: the conveying mechanism is suitable for conveying magnesium particles and filling them into the melt cylinder, thereby forming magnesium metal liquid under the smelting of the melt cylinder; the second process: the injection mold assembly is suitable for cooperating with the conveying mechanism so that the magnesium metal liquid is injected into the die-casting machine body from the injection head at the end of the melt cylinder; The injection module is installed on the side of the die casting body and is arranged in a straight line with the die casting body, and the melt cylinder is matched and connected with the injection module and is arranged vertically with the die casting body; when performing the first mode die casting, the injection module is suitable for injecting the added aluminum metal liquid into the die casting body for molding; when performing the second mode die casting, the melt cylinder is suitable for first injecting the magnesium metal liquid into the injection module, and then the injection module is suitable for injecting the magnesium metal liquid into the die casting body for molding; The die-casting machine body is provided with a thrust mechanism, which cooperates with the injection module and is arranged in a straight line corresponding to the melt cylinder; the thrust mechanism is suitable for driving the injection module and the melt cylinder to cooperate with each other, so that the injection module and the melt cylinder are kept in a sealed state; The conveying mechanism includes a mounting block, a screw and a driving device, wherein the mounting block is horizontally slidably mounted on the workbench, the driving device is mounted on the mounting block, the screw is located in the melt tube, the first end of the screw is rotatably disposed on the mounting block and is splined to the output shaft of the driving device, and the mounting block is cooperatively connected to the injection mold group; when performing the first process, the driving device is suitable for driving the screw to rotate and convey and fill the metal particles entering the feed port of the melt tube into the melt tube, and then the screw moves in a direction away from the melt tube under the reaction force of the metal particles, and at the same time, the injection mold group is suitable for driving the mounting block away from the melt tube; when performing the second process, the injection mold group is suitable for driving the mounting block close to the melt tube, and then the magnesium metal liquid is injected from the melt tube under the action of the screw head at the second end of the screw.

2. The dual-die die-casting machine according to claim 1, characterized in that: The injection module includes an injection barrel, an extrusion barrel and an injection nozzle. The injection barrel is installed on the fixed mold plate of the die-casting machine body. The ends of the injection barrel are connected with the extrusion barrel and the injection nozzle in sequence. The injection nozzle cooperates with the cavity of the die-casting machine body, and the extrusion barrel cooperates and communicates with the melt barrel.

3. The dual-die die-casting machine according to claim 2, characterized in that: The inner diameter of the injection head is smaller than the inner diameter of the extrusion barrel, and the inner diameter of the injection nozzle is smaller than the gate diameter in the cavity.

4. The dual-die die-casting machine according to claim 3, characterized in that: The thrust mechanism includes a thrust cylinder and a push head. The thrust cylinder is installed on the fixed template and a push head is installed on one end of the piston rod. The thrust cylinder is suitable for driving the push head to abut against and act on the extrusion barrel, thereby making the extrusion barrel and the injection head abut against each other and seal.

5. The double-die die-casting machine according to any one of claims 2 to 4, characterized in that: The fixed template is penetrated by limit rods symmetrically distributed up and down, and the magnesium alloy module cooperates with the first end of the limit rod to achieve limit locking of the magnesium alloy module; the thrust mechanism is locked and installed through the second end of the limit rod.

6. The dual-die die-casting machine according to claim 1, characterized in that: The injection mold assembly includes an injection seat and an injection cylinder. The injection seat is installed on the workbench and corresponds to the mounting block. The melt cylinder is fixedly installed on the injection seat. The cylinder body of the injection cylinder is hingedly installed with a first connecting seat. The piston end of the injection cylinder is hingedly installed with a second connecting seat. The first connecting seat is installed on the injection seat, and the second connecting seat is installed on the mounting block.

7. The dual-die die-casting machine according to claim 6, characterized in that: The screw head comprises a rod head, a blocking portion, a check ring, a collar and a washer, the rod head is installed on the second end of the screw rod by means of a thread, the blocking portion and the collar are both arranged on the outside of the rod head and a gap is formed between the two, a plurality of material grooves are arranged on the outside of the blocking portion, the collar is sleeved on the outside of the check ring and abuts against the inner wall of the melt cylinder, the check ring is sleeved on the rod head and corresponds to the gap, the axial length of the check ring is less than the gap length, and a flow channel connected to the material groove is formed between the check ring and the gap; When the magnesium metal liquid is being transported, the check ring abuts against the blocking portion, thereby forming a gap between the check ring and the gasket, so that the magnesium metal liquid passes through the gap, the flow channel and the material port and is injected into the injection head; when the magnesium metal liquid refluxes, the check ring is suitable for abutting against the gasket under the flow force, so that the gap is reduced or closed, thereby buffering or blocking the reflux force.

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