Die casting device for producing a flow distribution plate blank

Abstract

The application discloses a die casting device for production of a flow distribution disc blank, comprising a base, wherein the surface of the base is connected with a mold closing mechanism, the mold closing mechanism is drivingly connected with a hydraulic cylinder, the output end of the hydraulic cylinder is drivingly connected with a first die, the output end of the hydraulic cylinder is slidingly connected with a second die, the second die is fixedly connected with the base, and a die casting mold is arranged between the first die and the second die; the die casting mold comprises a movable die plate and a stationary die plate, one side of the movable die plate is connected with one side of a first cooling plate, the other side of the first cooling plate is connected with the first die, the other side of the movable die plate is connected with one side of a second cooling plate, and the second die is connected with the base; the application can form a stable temperature gradient and uniformly radiate heat, ensure the quality and stability of the flow distribution disc casting forming, and avoid the problem that when the mold is oversaturated, the injection amount of the metal solution exceeds the volume of the mold cavity, and the excessive solution directly flows into the exhaust groove or the overflow groove.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flow distribution plate, in particular to a die casting device for flow distribution plate blank production. BACKGROUND

[0002] A die casting mold switching system for flow distribution plate and a flow distribution plate assembly thereof are disclosed in a patent application with the application publication number CN202410445893.4, which comprises a mounting base, a pressing unit and a mold closing unit mounted on the top of the mounting base, and a runner unit opened on the mold closing unit. The mold closing unit comprises symmetrically arranged fixed mold seats and movable mold seats. Two groups of fixed mold runners are symmetrically opened in the fixed mold seats, and two groups of movable mold runners are symmetrically opened in the movable mold seats. The device solves the problem that the front pump flow distribution plate and the rear pump flow distribution plate need to be processed by two different die casting devices, and the same die casting device cannot complete the die casting processing of the walking motor flow distribution plate. The number and position of the transition throttle grooves can be selectively adjusted. One set of molds can complete the die casting processing of the front pump and the rear pump flow distribution plate. Further adjustment and processing can be performed according to the processing requirements of the walking motor. After cooling, the effect of easy material removal is achieved.

[0003] In the prior art including the above-mentioned patent, the existing cooling method and demolding technology have some limitations. First, the cooling is uneven. Traditional die casting cooling is usually carried out by an external cooling system of the mold (such as a water cooling channel), which leads to an external-to-internal cooling process. This cooling method is prone to cause slow cooling speed inside the casting and fast cooling speed outside the casting, resulting in large thermal stress inside the casting and even defects such as shrinkage holes and shrinkage porosity. Moreover, due to uneven cooling or improper mold surface treatment, the casting may be stuck in the mold after cooling, resulting in slow demolding efficiency. When the mold is oversaturated, the amount of metal solution injected exceeds the volume of the mold cavity, and the excess solution directly flows into the exhaust groove or overflow groove. Especially in the high-speed filling stage, the exhaust structure is easily broken, which is difficult to control.

[0004] Therefore, a die casting device for flow distribution plate blank production is needed to solve the above problems. SUMMARY

[0005] The present application aims to provide a die casting device for flow distribution plate blank production to solve the technical problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a die casting device for flow distribution plate blank production, comprising a base, wherein the surface of the base is connected with a mold closing mechanism, the mold closing mechanism is drivingly connected with a hydraulic cylinder, the output end of the hydraulic cylinder is drivingly connected with a first die, the output end of the hydraulic cylinder is slidingly connected with a second die, the second die is fixedly connected with the base, and a die casting mold is arranged between the first die and the second die.

[0007] The die-casting die includes a movable die plate and a fixed die plate, a top of a die cavity between the movable die plate and the fixed die plate is communicated with an anti-overflow device, one side of the movable die plate is connected with one side of a first cooling plate, the other side of the first cooling plate is connected with a first die, the other side of the movable die plate is connected with one side of a second cooling plate, the other side of the second cooling plate is connected with a second die, and the second die is connected with a base;

[0008] The first cooling plate and the second cooling plate are both provided with a liquid inlet at a middle position, the liquid inlet is communicated with a cooling mechanism, a plurality of cooling ring grooves with increasing diameters are sequentially arranged in the first cooling plate and the second cooling plate from inside to outside along a radial direction, a plurality of rectangular ports are arranged at equal intervals on an inner wall of the cooling ring groove, and the rectangular ports are arranged in a staggered manner;

[0009] The anti-overflow device includes a sleeve, the sleeve is slidably connected with the movable die plate, one end of the sleeve is communicated with one end of an exhaust pipe, the other end of the exhaust pipe is communicated with the top of the die cavity, an inner ring of the sleeve is slidably connected with a piston, one side of the piston away from the exhaust pipe is connected with an output end of a reset hydraulic rod, and the reset hydraulic rod is drivingly connected with a die clamping mechanism.

[0010] Further, a plurality of cooling holes are arranged in a ring shape in the fixed die plate and the movable die plate, the cooling holes are communicated with the cooling ring grooves, a liquid injection groove is arranged at a lower end of the fixed die plate and a lower end of the movable die plate, two liquid injection grooves are communicated with a plunger mechanism, the plunger mechanism is connected with the base, a plurality of liquid discharge ports are arranged at equal intervals on an outer ring of the fixed die plate, the liquid discharge ports are communicated with the cooling mechanism, and the cooling mechanism is connected with the base.

[0011] Further, a threaded hole is arranged on a side away from the piston sleeve, the threaded hole is threadedly connected with a quantity control screw, and one end of the quantity control screw close to the piston is connected with a travel switch.

[0012] Further, both sides of the die-casting die are slidably connected with symmetrically arranged disc unloading clamping rods, one end of the disc unloading clamping rod passes through the movable die plate and the fixed die plate and is clamped with a flow distribution disc in the die cavity, the other end of the disc unloading clamping rod passes through the first die at one end and is in contact with a release block, and the release block is connected with the base.

[0013] Compared with the prior art, the die-casting device for flow distribution disc blank production has the following advantages:

[0014] (1) Through the liquid inlet into the cooling liquid, from inside to outside along the cooling ring groove and rectangular port transmission, so that the cooling liquid from inside to outside evenly spread, cooling dynamic die plate and static die plate between the flow distribution plate in the cavity, so as to realize the high efficiency and uniform cooling of the mold, improve the heat dissipation efficiency, reduce the thermal deformation, and ensure the stability of the quality of the casting forming, and the cooling from inside to outside can reduce the temperature of the core area of the mold first, and then gradually cool the outer circle of the flow distribution plate along the path, and the temperature of the cooling liquid rises after absorbing the heat of the mold, while the temperature of the outer circle of the flow distribution plate gradually decreases due to continuous heat dissipation, forming a stable temperature gradient for uniform heat dissipation, ensuring the quality and stability of the flow distribution plate casting forming, and finally realizing backflow through the liquid outlet.

[0015] (2) In the die casting process, the injection mechanism injects the molten metal alloy into the lower end of the mold cavity between the dynamic die plate and the static die plate, the gas sleeve in the mold cavity immediately pushes the piston to move, and the accurate displacement control ensures smooth filling of the mold cavity, when the mold cavity is completely filled, the piston just touches the travel switch, at this time the injection mechanism stops immediately and enters the pressure maintaining stage, and then the subsequent cooling work is carried out, avoiding overflow of excess molten metal alloy, and by adjusting the position of the control screw, the injection amount of molten metal alloy for different size flow distribution plates can be further adjusted, thereby further improving the fault tolerance; after the flow distribution plate is cooled and formed in the mold cavity, the dynamic die plate drives the dismounting clamp rod to move synchronously, when the clamp rod contacts the release block, mechanical linkage is generated, the flow distribution plate is quickly separated from the mold cavity, and rapid demolding is realized, reserving sufficient time for the next production cycle. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall structure diagram of the present application;

[0017] Figure 2 It is the structure diagram of the release block in the present application;

[0018] Figure 3 It is the structure diagram of the die casting mold in the present application;

[0019] Figure 4 It is the structure diagram of the cooling hole in the present application;

[0020] Figure 5 It is the structure diagram of the second cooling plate in the present application;

[0021] Figure 6 It is the structure diagram of the liquid outlet in the present application;

[0022] Figure 7 Figure 1 is a schematic diagram of the structure of the disc unloading card rod in the present application;

[0023] Figure 8 Figure 2 is a schematic diagram of the structure of the movable die plate and the static die plate in the present application;

[0024] Figure 9 Figure 3 is a schematic diagram of the structure of the anti-overflow device in the present application.

[0025] In the figure: 1 - die clamping mechanism, 11 - ejection aid block, 12 - base, 2 - hydraulic cylinder, 3 - first die, 4 - second die, 5 - cooling mechanism, 6 - injection mechanism, 7 - die casting mold, 71 - movable die plate, 72 - static die plate, 721 - cooling hole, 722 - liquid injection groove, 81 - first cooling plate, 82 - second cooling plate, 821 - cooling ring groove, 822 - rectangular port, 823 - liquid inlet, 824 - liquid outlet, 9 - anti-overflow device, 91 - sleeve, 92 - exhaust pipe, 93 - piston, 94 - reset hydraulic rod, 95 - quantity control screw, 96 - travel switch, 10 - disc unloading card rod. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] Please refer to Figures 1-9 , the present application provides a technical solution:

[0028] A die casting device for flow distribution disc blank production, comprising a base 12, the surface of the base 12 is connected with a die clamping mechanism 1, the die clamping mechanism 1 comprises a hydraulic system, which provides power through hydraulic oil injection and other actions, and accurately controls the motion parameters through pressure valves and flow valves, the die clamping mechanism 1 is in transmission connection with a hydraulic cylinder 2, the output end of the hydraulic cylinder 2 is in transmission connection with a first die 3, the output end of the hydraulic cylinder 2 is in sliding connection with a second die 4, the second die 4 is fixedly connected with the base 12, and a die casting mold 7 is arranged between the first die 3 and the second die 4.

[0029] The die casting mold 7 comprises a movable die plate 71 and a static die plate 72, one side of the movable die plate 71 is connected with one side of a first cooling plate 81, the other side of the first cooling plate 81 is connected with the first die 3, the other side of the movable die plate 71 is connected with one side of a second cooling plate 82, the other side of the second cooling plate 82 is connected with the second die 4, and the second die 4 is connected with the base 12.

[0030] The first cooling plate 81 and the second cooling plate 82 are both provided with a liquid inlet 823 in the middle position, the liquid inlet 823 is communicated with the cooling mechanism 5, the first cooling plate 81 and the second cooling plate 82 are sequentially provided with a plurality of groups of cooling ring grooves 821 with increasing diameters from inside to outside in the radial direction, a plurality of rectangular ports 822 are arranged at equal intervals on the inner wall of the cooling ring groove 821, the rectangular ports 822 are staggered, cooling liquid enters through the liquid inlet 823, and is transmitted from inside to outside along the cooling ring groove 821 and the rectangular port 822, so that the cooling liquid uniformly diffuses from inside to outside, the flow distribution disc in the mold cavity between the dynamic die plate 71 and the static die plate 72, so as to realize efficient and uniform cooling of the mold, improve the heat dissipation efficiency, reduce thermal deformation, and ensure the stability of the casting forming quality, and the cooling from inside to outside can preferentially reduce the temperature of the core area of the mold, and then uniformly dissipate heat along the progressive path of the cooling ring groove 821 and the rectangular port 822, which can synchronize the metal solidification process, reduce the temperature gradient, synchronize the physical process of the metal liquid solidifying from inside to outside, reduce the stress concentration and hot crack risk caused by the large temperature difference between inside and outside.

[0031] The static die plate 72 and the dynamic die plate 71 are annularly provided with a plurality of cooling holes 721, the cooling holes 721 are communicated with the cooling ring groove 821, the lower end of the static die plate 72 and the lower end of the dynamic die plate 71 are provided with a liquid injection groove 722, and the two liquid injection grooves 722 are communicated with the injection mechanism 6, the injection mechanism 6 is connected with the base 12, a plurality of liquid discharge ports 824 are equidistantly arranged on the outer circle of the static die plate 72, the plurality of liquid discharge ports 824 are communicated with the cooling mechanism 5, the cooling mechanism 5 is connected with the base 12, the top of the mold cavity between the static die plate 72 and the dynamic die plate 71 is communicated with the anti-overflow device 9, through the communication design of the cooling hole 721 and the cooling ring groove 821, after the cooling liquid uniformly diffuses from inside to outside, the cooling liquid first efficiently cools the core area of the mold (the periphery of the cooling hole 721), then gradually cools the outer circle of the flow distribution disc along the path, and the temperature of the cooling liquid increases after absorbing the heat of the mold, while the temperature of the outer circle of the flow distribution disc gradually decreases due to continuous heat dissipation, forming a stable temperature gradient for uniform heat dissipation, ensuring the quality and stability of the flow distribution disc casting, and finally realizing backflow through the liquid discharge port 824.

[0032] The anti-overflow device 9 comprises a sleeve 91, which is in sliding connection with the movable die plate 71, one end of the sleeve 91 is in communication with one end of the exhaust pipe 92, the other end of the exhaust pipe 92 is in communication with the top of the mold cavity, the inner circle of the sleeve 91 is in sliding connection with the piston 93, the side of the piston 93 away from the exhaust pipe 92 is connected with the output end of the reset hydraulic rod 94, the reset hydraulic rod 94 is in transmission connection with the die clamping mechanism 1, the side of the sleeve 91 away from the piston 93 is provided with a threaded hole, the threaded hole is in threaded connection with the quantity control screw 95, one end of the quantity control screw 95 close to the piston 93 is connected with the travel switch 96, in the die casting process, the injection mechanism 6 injects the molten metal alloy into the lower end of the mold cavity between the movable die plate 71 and the fixed die plate 72. The gas sleeve 91 in the mold cavity immediately pushes the piston 93 to move, and accurate displacement control is ensured to fill the mold cavity smoothly, when the mold cavity is completely filled, the piston 93 just touches the travel switch 96, at this time, the injection mechanism 6 immediately stops working and enters the pressure maintaining stage, and then subsequent cooling work is carried out, so that the overflow of the molten metal alloy is avoided, and the injection amount of the molten metal alloy of the different size flow distribution disc can be further adjusted by adjusting the position of the quantity control screw 95, so that the fault tolerance is further improved.

[0033] The die casting mold 7 is in sliding connection with the symmetrically arranged disc unloading clamping rod 10 on both sides, one end of the disc unloading clamping rod 10 penetrates through the movable die plate 71 and the fixed die plate 72 and is clamped with the flow distribution disc in the mold cavity, the other end of the disc unloading clamping rod 10 penetrates through the first die 3 at one end and is in contact with the ejection aid block 11, the ejection aid block 11 is connected with the base 12, after the flow distribution disc is cooled and formed in the mold cavity, the movable die plate 71 drives the disc unloading clamping rod 10 to move synchronously, when the clamping rod contacts the ejection aid block 11, mechanical linkage is generated, so that the flow distribution disc is quickly separated from the mold cavity, and rapid demolding is realized, and sufficient time is reserved for the next production cycle.

[0034] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalency of the essential elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be considered as limiting the claims involved.

Claims

1. A die-casting apparatus for producing distribution plate blanks, comprising a base (12), characterized in that: The base (12) surface is connected to the mold closing mechanism (1), the mold closing mechanism (1) is connected to the hydraulic cylinder (2) in a transmission connection, the output end of the hydraulic cylinder (2) is connected to the first mold (3) in a transmission connection, the output end of the hydraulic cylinder (2) is slidably connected to the second mold (4), the second mold (4) is connected and fixed to the base (12), and a die casting mold (7) is provided between the first mold (3) and the second mold (4); The die-casting mold (7) includes a moving template (71) and a stationary template (72). The top of the mold cavity between the stationary template (72) and the moving template (71) is connected to the anti-overflow device (9). One side of the moving template (71) is connected to one side of the first cooling plate (81), and the other side of the first cooling plate (81) is connected to the first mold (3). The other side of the moving template (71) is connected to one side of the second cooling plate (82), and the other side of the second cooling plate (82) is connected to the second mold (4). The second mold (4) is connected to the base (12). Both the first cooling plate (81) and the second cooling plate have liquid inlets (823) in the middle position. The liquid inlets (823) are connected to the cooling mechanism (5). The first cooling plate (81) and the second cooling plate (82) have multiple sets of cooling ring grooves (821) with increasing diameters in the radial direction from the inside to the outside. The inner wall of the cooling ring grooves (821) has multiple rectangular openings (822) arranged at equal intervals. The rectangular openings (822) are arranged alternately. The anti-overflow device (9) includes a sleeve (91), which is slidably connected to the moving template (71). One end of the sleeve (91) is connected to one end of the exhaust pipe (92), and the other end of the exhaust pipe (92) is connected to the top of the mold cavity. The inner ring of the sleeve (91) is slidably connected to the piston (93), and the side of the piston (93) away from the exhaust pipe (92) is connected to the output end of the reset hydraulic rod (94). The reset hydraulic rod (94) is connected to the mold closing mechanism (1) in a transmission manner.

2. The die-casting apparatus for producing distribution plate blanks according to claim 1, characterized in that: The static template (72) and the moving template (71) are provided with a plurality of cooling holes (721) in a ring shape. The cooling holes (721) are connected to the cooling ring groove (821). The lower end of the static template (72) and the lower end of the moving template (71) are provided with injection grooves (722). The two injection grooves (722) are connected to the injection mechanism (6). The injection mechanism (6) is connected to the base (12). The outer ring of the static template (72) is provided with a plurality of drain ports (824) at equal intervals. The plurality of drain ports (824) are connected to the cooling mechanism (5). The cooling mechanism (5) is connected to the base (12).

3. The die-casting apparatus for producing distribution plate blanks according to claim 1, characterized in that: A threaded hole is opened on the side of the sleeve (91) away from the piston (93), and the threaded hole is threadedly connected to the control screw (95). One end of the control screw (95) near the piston (93) is connected to the limit switch (96).

4. The die-casting apparatus for producing distribution plate blanks according to claim 1, characterized in that: The die-casting mold (7) is slidably connected to the symmetrically arranged unloading platen clamping rods (10) on both sides. One end of the unloading platen clamping rod (10) passes through the moving template (71) and the stationary template (72) and is clamped to the distribution plate in the mold cavity. The other end of the unloading platen clamping rod (10) passes through the first pressure mold (3) and contacts the release block (11). The release block (11) is connected to the base (12).

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