A new type of die-casting mold with modular replaceable

Abstract

This invention discloses a novel modular replaceable die-casting mold. The cooling chamber of the cooling mold is connected to the groove accommodating the casting mold. This allows the coolant to directly contact the surface of the casting mold during cooling, resulting in rapid heat transfer and more uniform temperature across the mold surface, thus improving the quality of the cast workpiece. Furthermore, the cooling mold is moved by a retractable drive rod of a drive device, enabling the closing and unclosing of the two cooling molds, making the mold assembly process simpler and more efficient.

Description

Technical Field

[0001] The present invention relates to the technical field of casting mold equipment.

[0002] In particular, the present invention relates to a novel modular replaceable die casting mold. Background Art

[0003] Die casting mold is a tool for casting metal parts. The basic process of die casting is: the molten metal is first cast into the mold cavity at a low speed or high speed. The mold has a movable cavity surface, which is pressurized and forged as the molten metal cools down, which not only eliminates the shrinkage and porosity defects of the blank, but also makes the internal structure of the blank reach the broken grains of the forged state. The comprehensive mechanical properties of the blank are significantly improved.

[0004] Controlling the surface temperature of the die-casting mold is very important for producing high-quality die-casting parts. Uneven or inappropriate die-casting mold temperature will lead to unstable casting dimensions, casting deformation during the production process, and defects such as thermal pressure, mold sticking, surface depressions, internal shrinkage holes and thermal bubbles. When the temperature difference on the mold surface is large, it will have different degrees of impact on variables in the production cycle, such as filling time, cooling time and spraying time. The existing die-casting mold surface is usually cooled by indirect water cooling, that is, the cooling water is not in direct contact with the mold surface, resulting in differences in heat transfer coefficients at various points on the mold surface, and different heat transfer speeds, which ultimately affects the quality of the cast workpiece. In addition, the existing die-casting mold cavity is usually assembled by screw fastening, and the assembly process is cumbersome, time-consuming, and has low production efficiency. Summary of the invention

[0005] In order to overcome the above-mentioned deficiencies of the prior art, the object of the present invention is to provide a novel die-casting mold with modular replaceable components.

[0006] To solve the above problems, the present invention adopts the following technical solutions:

[0007] A novel modular replaceable die-casting mold, comprising:

[0008] A casting mold, comprising a first body and a second body, wherein the first body and / or the second body is provided with a first casting liquid inlet, and the first body and the second body together constitute a cavity mold for containing the casting liquid;

[0009] A first cooling mold, wherein a first cooling chamber for accommodating a cooling liquid and a first groove for accommodating the first split body are provided therein, and a first inlet and a first outlet for the cooling liquid are provided thereon; the first cooling chamber and the first groove are in communication;

[0010] A second cooling mold is provided with a second cooling chamber for accommodating a cooling liquid and a second groove for accommodating the second split body, and a second inlet and a second outlet for the cooling liquid are provided on the second cooling mold; the second cooling chamber is connected to the second groove; and

[0011] A driving device, which is fixedly connected to one end of the first cooling mold via a retractable driving rod, and the driving device can drive the driving rod to move in a retractable manner;

[0012] The first cooling mold and / or the second cooling mold is provided with a second casting liquid inlet, and the second casting liquid inlet is communicated with the first casting liquid inlet.

[0013] Preferably, a chuck is further included, and a third groove for accommodating the chuck is provided on the first cooling mold and / or the second cooling mold, and the chuck is used for clamping and connecting the first sub-body and the second sub-body.

[0014] Preferably, the chuck and the third groove are provided with positioning columns and positioning holes that cooperate with each other.

[0015] Preferably, a sealing ring is also provided outside the chuck.

[0016] Preferably, it further comprises a guide rail, and the driving device drives the first cooling mold to slide along the guide rail.

[0017] Preferably, it also includes a base, and the second cooling mold is fixedly mounted on the base.

[0018] Preferably, mutually engaging positioning grooves and positioning protrusions are provided on the opposing surfaces of the first cooling mold and the second cooling mold.

[0019] Preferably, the driving device is a hydraulic driving device, and the driving rod is a hydraulic rod.

[0020] Compared with the prior art, the technical effects of the present invention are embodied in:

[0021] The cooling chamber of the cooling mold of the novel modular replaceable die-casting mold of the present invention is connected to the groove accommodating the casting mold, so that during cooling, the coolant is in direct contact with the surface of the casting mold, the heat transfer rate is fast, and the temperature of each point on the mold surface is more uniform, which is conducive to improving the quality of the cast workpiece. In addition, the cooling mold is moved by the retractable driving rod of the driving device, thereby realizing the mold closing and unmolding of the two cooling molds, making the mold assembly process simpler and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic structural diagram of a novel die-casting mold with replaceable modules provided in an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the side structure of a first cooling mold provided by an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of the side structure of a second cooling mold provided by an embodiment of the present invention;

[0025] Figure 4 A schematic structural diagram of a chuck clamping a casting mold provided in an embodiment of the present invention.

[0026] In the figure, 1, casting mold, 2, first cooling mold, 3, second cooling mold, 4, driving device, 5, driving rod, 6, chuck, 7, sealing ring, 8, guide rail, 9, base, 101, first split, 102, second split, 1021, first casting liquid inlet, 201, first groove, 202, first inlet, 203, first outlet, 204, third groove, 205, first cooling mold positioning groove, 206, first cooling mold positioning protrusion, 301, second groove, 302, second inlet, 303, second outlet, 304, second casting liquid inlet, 305, second cooling mold positioning groove, 306, second cooling mold positioning protrusion, 601, chuck positioning column, 602, chuck positioning hole, 2041, third groove positioning column, 2042, third groove positioning hole. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] The embodiment of the present invention provides a novel die-casting mold with replaceable modules, the structure of which is as follows: Figure 1 , Figure 2 , Figure 3 , Figure 4As shown. A novel modular replaceable die-casting mold comprises a casting mold 1, a first cooling mold 2, a second cooling mold 3 and a driving device 4. The casting mold 1 comprises a first split body 101 and a second split body 102, and a first casting liquid inlet 1021 is provided on the second split body 102 (the first casting liquid inlet 1021 can also be provided on the first split body 101; or the first casting liquid inlet is provided on both the first split body 101 and the second split body 102, so that the casting liquid can be poured from both sides of the casting mold 1 at the same time), and the first split body 101 and the second split body 102 together constitute a cavity mold for containing the casting liquid; a first cooling chamber (not shown in the figure) for containing the coolant and a first groove 201 for containing the first split body 101 are provided in the first cooling mold 2, and a first coolant inlet 202 and a first outlet 203 are provided on the first cooling mold 2; the first cooling chamber and the first groove 201 are connected, so that the coolant in the first cooling chamber can directly communicate with the coolant in the first cooling chamber. The outer surface of the first split body 101 of the casting mold 1 in the first groove 201 is in contact; a second cooling chamber (not shown in the figure) for accommodating coolant and a second groove 301 for accommodating the second split body 102 are provided in the second cooling mold 3, and a second coolant inlet 302 and a second outlet 303 are provided on the second cooling mold 3; the second cooling chamber and the second groove 301 are communicated with each other, so that the coolant in the second cooling chamber can directly contact the outer surface of the second split body 102 of the casting mold 1 in the second groove 301; the driving device 4 is fixedly connected to one end of the first cooling mold 2 through a retractable driving rod 5, and the driving device 4 can drive the driving rod 5 to telescopically move; a second casting liquid inlet 304 is provided on the second cooling mold 3, and the second casting liquid inlet 304 is communicated with the first casting liquid inlet 1021. It should be noted that when the first casting liquid inlet 1021 is provided on both the first sub-body 101 and the second sub-body 102 , correspondingly, the second casting liquid inlet 304 connected to the first casting liquid inlet 1021 is provided on both the first cooling mold 2 and the second cooling mold 3 .

[0029] When a new type of modular replaceable die-casting mold of this embodiment is used, the first sub-body 101 and the second sub-body 102 of the casting mold 1 are first assembled into a cavity mold as a whole for accommodating the casting liquid; then, the driving device 4 drives the driving rod 5 to extend forward, so that the first cooling mold 2 and the second cooling mold 3 are pressed together for mold closing; then, the casting liquid is poured into the first casting liquid inlet 1021 connected to it through the second casting liquid inlet 304 on the second cooling mold 3, and at the same time, the circulating coolant is injected into the cooling chambers of the first cooling mold 2 and the second cooling mold 3. In this way, the circulating coolant is in full contact with the bottom of the first sub-body 101 and the second sub-body 102 of the casting mold 1, which strengthens the heat transfer process, makes the temperature of each point on the surface of the casting mold 1 more uniform, and is conducive to improving the quality of the cast workpiece. At the same time, the circulating coolant forms a stable pressure in the cooling chamber, and the coolant can apply a pair of continuous liquid pressures in opposite directions to the bottom of the first sub-body 101 and the second sub-body 102, so that the first sub-body 101 and the second sub-body 102 fit more closely, thereby promoting the sealing of the first sub-body 101 and the second sub-body 102 of the casting mold 1.

[0030] After the casting is completed, the driving device 4 drives the driving rod 5 to shorten backward, so that the first cooling mold 2 is separated from the second cooling mold 3. At the same time, the coolant in the first cooling mold 2 and the second cooling mold 3 is released, the first sub-body 101 and the second sub-body 102 of the casting mold 1 are opened, and the cooled casting is taken out, thus completing a die-casting process.

[0031] The first cooling mold 2 of a new modular replaceable die-casting mold in this embodiment is moved by the retractable driving rod 5 of the driving device 4, thereby realizing the closing and unclosing of the first cooling mold 2 and the second cooling mold 3, making the mold assembly process simpler and more efficient.

[0032] In order to make the combination and connection of the first sub-body 101 and the second sub-body 102 of the casting mold 1 more convenient and tight, preferably, a new modular replaceable die-casting mold in this embodiment also includes a chuck 6, and a third groove 204 for accommodating the chuck 6 is opened on the first cooling mold 2 (the third groove 204 can also be opened on the second cooling mold 3; or the third groove 204 for accommodating the chuck 6 is symmetrically opened on the first cooling mold 2 and the second cooling mold 3, so that a part of the chuck 6 is located in the third groove 204 opened in the first cooling mold 2, and the other part is located in the third groove 204 opened in the second cooling mold 3), and the chuck 6 is used to clamp and connect the first sub-body 101 and the second sub-body 102 of the casting mold 1.

[0033] At the same time, in order to facilitate the assembly of the first cooling mold 2 and the second cooling mold 3, preferably, the chuck 6 and the third groove 204 are provided with mutually matching positioning columns and positioning holes, such as Figure 2 , Figure 3 , Figure 4 The chuck 6 is provided with a chuck positioning column 601 and a chuck positioning hole 602 , and the third groove 204 is provided with a third groove positioning hole 2042 matched with the chuck positioning column 601 , and a third groove positioning column 2041 matched with the chuck positioning hole 602 .

[0034] Preferably, a sealing ring 7 is sleeved outside the chuck 6. The sealing ring 7 plays a role in tightening and sealing the casting mold 1, and can prevent the coolant from entering the casting mold 1.

[0035] Preferably, the novel modular replaceable die-casting mold of this embodiment further includes a guide rail 8, and the driving device 4 drives the first cooling mold 2 to slide forward and backward along the guide rail 8. In this way, the first cooling mold 2 can make a reciprocating motion along a predetermined direction on the guide rail 8, which is beneficial to the rapid mold closing and positioning of the first cooling mold 2 and the second cooling mold 3.

[0036] Preferably, the novel modular replaceable die-casting mold of this embodiment further includes a base 9, and the second cooling mold 3 is fixedly mounted on the base 9. When performing mold closing or mold unloading operations, the second cooling mold 3 is fixed by the base 9, and the driving device 4 drives the first cooling mold 2 to move forward and backward.

[0037] Preferably, mutually engaging positioning grooves and positioning protrusions are provided on the opposing surfaces of the first cooling mold 2 and the second cooling mold 3. Figure 2 , Figure 3 As shown. The first cooling mold 2 is provided with a first cooling mold positioning groove 205 and a first cooling mold positioning protrusion 206, and the second cooling mold 3 is provided with a second cooling mold positioning protrusion 306 engaged with the first cooling mold positioning groove 205, and a second cooling mold positioning groove 305 engaged with the first cooling mold positioning protrusion 206. The first cooling mold 2 is driven by the driving device 4 to move telescopically to complete the positioning and assembly of the positioning grooves and positioning protrusions on the first cooling mold 2 and the second cooling mold 3, so that the first cooling mold 2 and the second cooling mold 3 are tightly fitted together.

[0038] Preferably, the driving device 4 is a hydraulic driving device, and the driving rod 5 is a hydraulic telescopic rod. The hydraulic driving mode is easier to realize automatic control, and has stable transmission and fast response, and is suitable for mechanical design, manufacturing and application.

[0039] The first sub-body 101 and the second sub-body 102 of the casting mold 1 of the present invention can be manufactured by 3D printing, so that the casting mold 1 can be a product of any complex shape. When the shape of the casting mold 1 changes, the shapes of the first groove 201 of the first cooling mold 2 and the second groove 301 of the second cooling mold 3 can be changed accordingly, that is, the casting mold 1, the first cooling mold 2 and the second cooling mold 3 are modularized, and the requirements for producing casting workpieces of different shapes can be met by simply replacing the modules.

[0040] The present invention is not limited to the above specific implementations, and the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made to the above implementations based on the technical essence of the present invention shall be included in the protection scope of the present invention.

Claims

1. A novel die-casting mold with modular replaceable features, characterized in that: include: A casting mold, comprising a first body and a second body, wherein the first body and / or the second body is provided with a first casting liquid inlet, and the first body and the second body together constitute a cavity mold for containing the casting liquid; A first cooling mold, wherein a first cooling chamber for accommodating a cooling liquid and a first groove for accommodating the first split body are provided therein, and a first inlet and a first outlet for the cooling liquid are provided thereon; the first cooling chamber and the first groove are in communication; A second cooling mold is provided with a second cooling chamber for accommodating a cooling liquid and a second groove for accommodating the second split body, and a second inlet and a second outlet for the cooling liquid are provided on the second cooling mold; the second cooling chamber and the second groove are connected; the circulating cooling liquid forms a stable pressure in the cooling chamber, and the cooling liquid applies a pair of continuous liquid pressures in opposite directions to the bottom of the first split body and the second split body; A driving device, which is fixedly connected to one end of the first cooling mold through a retractable driving rod, and the driving device can drive the driving rod to retract and move, wherein the driving device is a hydraulic driving device, and the driving rod is a hydraulic rod; A second casting liquid inlet is provided on the first cooling mold and / or the second cooling mold, and the second casting liquid inlet is connected to the first casting liquid inlet; It also includes a guide rail, and the driving device drives the first cooling mold to slide along the guide rail. The opposite surfaces of the first cooling mold and the second cooling mold are provided with positioning grooves and positioning protrusions that engage with each other.

2. A novel modular replaceable die-casting mold as claimed in claim 1, characterized in that: It also includes a chuck, and a third groove for accommodating the chuck is formed on the first cooling mold and / or the second cooling mold, and the chuck is used for clamping and connecting the first sub-body and the second sub-body.

3. A novel modular replaceable die-casting mold as claimed in claim 2, characterized in that: The chuck and the third groove are provided with positioning columns and positioning holes that cooperate with each other.

4. A novel modular replaceable die-casting mold as claimed in claim 3, characterized in that: A sealing ring is also sleeved on the outside of the chuck.

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