Die casting die with anti-shortage function for a housing

Abstract

The present application relates to the technical field of die casting mould, and provides a die casting mould with anti-material shortage function for a shell, which comprises a fixed mould assembly and a movable mould assembly, a fixed mould cavity block and a feeding channel are arranged on the fixed mould base assembly, a movable mould cavity block is arranged on the movable mould assembly, and a product cavity is formed between the fixed mould cavity block and the movable mould cavity block after the fixed mould cavity block and the movable mould cavity block are attached; one end of the feeding channel is communicated with the top end of the fixed mould assembly, and the other end of the feeding channel is communicated with the product cavity; a profiling block for inserting into the product cavity is arranged at the middle position of the fixed mould cavity block, and a pin column is arranged on the profiling block; compared with the prior art, the present application has the advantages that the material thickness of the upper end of the shell is reduced and the direction of the feeding material in the product cavity is changed by arranging the profiling block and the pin column on the fixed mould cavity block, so that the existence of the material shortage, air holes and fusion marks at the upper end of the shell is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of die casting mold, in particular to a die casting mold with anti-material shortage function for a shell. BACKGROUND

[0002] The shell is a relatively important and common component in various mechanical parts, which is mostly manufactured by die casting process. The die casting process is characterized by applying pressure to molten metal in the product cavity of the die casting mold to form the shape of the shell in the product cavity. Figure 1 As shown in a shell produced by die casting process, Figure 1 The shell shown in the figure has a relatively thick structure at the top end, and traditional die casting molds often have material shortage, porosity, and fusion marks during the die casting process, which makes the shell with this structure unable to be produced by die casting. SUMMARY

[0003] The present application solves the technical problem of the prior art and provides a die casting mold with anti-material shortage function for a shell.

[0004] The technical solution adopted by the present application to solve the above technical problem is to provide a die casting mold with anti-material shortage function for a shell, which comprises a fixed mold assembly and a movable mold assembly. The fixed mold seat assembly is provided with a fixed mold cavity block and a feeding channel, and the movable mold assembly is provided with a movable mold cavity block,

[0005] The fixed mold cavity block is embedded in the middle position of the fixed mold assembly, and the movable mold cavity block is embedded in the middle position of the movable mold assembly. The fixed mold cavity block and the movable mold cavity block are fitted together to form a product cavity between them.

[0006] One end of the feeding channel is in communication with the top end of the fixed mold assembly, and the other end of the feeding channel is in communication with the product cavity.

[0007] The middle position of the fixed mold cavity block is provided with a profiling block inserted into the product cavity, and a pin column is inserted into the profiling block.

[0008] When the metal raw material enters the product cavity from the feeding channel, the profiling block changes the feeding direction of the metal raw material in the product cavity while forming the top shape of the shell, and the pin column forms a material reduction hole at the top of the shell.

[0009] In the above-mentioned die casting mold with anti-material shortage function for a shell, the profiling block is embedded in the fixed mold cavity block.

[0010] In the die casting die with the anti-shortage function for the shell, the profiling block is provided with a mounting hole penetrating the height direction of the profiling block, the upper end of the mounting hole is provided with a counterbore with a hole diameter larger than the diameter of the mounting hole, and the end of the pin column has a counterbore with a diameter larger than the outer diameter of the pin column. When the pin column is inserted into the mounting hole, the counterbore is inserted into the counterbore.

[0011] In the die casting die with the anti-shortage function for the shell, the hole wall of the counterbore is provided with a plurality of exhaust notches in communication with the side wall of the profiling block, and the top end of the fixed mold cavity block is provided with a first exhaust groove in communication with the exhaust notches.

[0012] In the die casting die with the anti-shortage function for the shell, the core pulling assembly is further provided, the core pulling assembly has a plurality of sliders movably arranged on the movable die assembly and a side core connected to the front end of the slider, and the side away from the fixed mold cavity block of the profiling block is provided with a through hole arranged in the horizontal direction. One of the side cores is movably arranged in the through hole.

[0013] In the die casting die with the anti-shortage function for the shell, the core pulling assembly comprises:

[0014] A first driving member is arranged on the side wall of the movable die assembly, and one of the sliders is connected to the output end of the first driving member.

[0015] A plurality of second driving members are fixed on the fixed die assembly, and the remaining sliders are each provided with an inclined hole matched with the second driving member. When the movable die assembly moves relative to the fixed die assembly, the sliders move on the movable die assembly by moving in the inclined holes through the second driving members.

[0016] In the die casting die with the anti-shortage function for the shell, the exhaust assembly is further provided, and the exhaust assembly comprises:

[0017] An upper exhaust block is connected to the fixed die assembly, and a plurality of exhaust protrusions are arranged in the upper exhaust block;

[0018] A lower exhaust block is connected to the movable die assembly, and a plurality of exhaust recesses are arranged in the lower exhaust block. When the fixed mold cavity block and the movable mold cavity block are attached, the exhaust protrusions are arranged in the exhaust recesses, and an exhaust passage is formed between the upper exhaust block and the lower exhaust block.

[0019] A second exhaust groove is arranged on the movable die assembly, one end of the second exhaust groove is in communication with the product cavity, and the other end of the second exhaust groove is in communication with the exhaust passage.

[0020] Compared with the prior art, the present application has the advantages that by setting the profiling block and the pin post on the fixed mold cavity block, the thickness of the shell upper end is reduced, and the direction of the feed in the product cavity is changed. The reduction of the thickness can reduce the feeding time of the shell upper end, thereby reducing the accumulation of the residual gas in the product cavity at the upper end of the shell. The change of the direction of the feed in the product cavity can change the position of the last welding of the metal raw material in the product cavity, thereby reducing the existence of the lack of material, the air hole and the welding mark at the upper end of the shell. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a perspective view of the shell before being changed;

[0022] Figure 2 is a perspective view of the shell after being changed;

[0023] Figure 3 is a perspective view of a die casting mold with a material lack prevention function for a shell according to the present application;

[0024] Figure 4 is a perspective view of a fixed mold assembly;

[0025] Figure 5 is a perspective view of a movable mold assembly;

[0026] Figure 6 is a perspective view of a profiling block;

[0027] Figure 7 is a perspective view of the profiling block installed on the fixed mold cavity block;

[0028] Figure 8 is a perspective view of a pin post.

[0029] In the drawings, 1 is a fixed mold assembly; 2 is a movable mold assembly; 3 is a core-pulling assembly; 4 is a fixed mold cavity block; 5 is a feeding channel; 6 is a movable mold cavity block; 7 is a profiling block; 8 is a pin post; 9 is a mounting hole; 10 is a counterbore hole; 11 is a counterbore; 12 is an exhaust gap; 13 is a first exhaust groove; 14 is a side core; 15 is a slide block; 16 is a through hole; 17 is a first driving member; 18 is a second driving member; 19 is an inclined hole; 20 is an upper exhaust block; 21 is an exhaust protrusion; 22 is a lower exhaust block; 23 is an exhaust recess; 24 is a second exhaust groove; and 25 is a material reducing hole. DETAILED DESCRIPTION

[0030] The following is a specific embodiment of the present application and further describes the technical solutions of the present application in combination with the drawings, but the present application is not limited to these embodiments.

[0031] As Figures 2 to 8As shown, the die casting mold with anti-material shortage function for the shell of the present application comprises a fixed mold assembly 1, a movable mold assembly 2, a fixed mold cavity block 4 and a feeding channel 5 are arranged on the fixed mold base assembly, a movable mold cavity block 6 is arranged on the movable mold assembly 2, the fixed mold cavity block 4 is embedded in the middle position of the fixed mold assembly 1, the movable mold cavity block 6 is embedded in the middle position of the movable mold assembly 2, the fixed mold cavity block 4 and the movable mold cavity block 6 are combined to form a product cavity between the fixed mold cavity block 4 and the movable mold cavity block 6; one end of the feeding channel 5 is communicated with the top end of the fixed mold assembly 1, and the other end of the feeding channel 5 is communicated with the product cavity; the middle position of the fixed mold cavity block 4 is provided with a profiling block 7 inserted into the product cavity, and a pin column 8 is inserted into the profiling block 7; when the metal raw material enters the product cavity from the feeding channel 5, the profiling block 7 changes the feeding direction of the metal raw material in the product cavity while forming the top shape of the shell, and the pin column 8 forms a material reducing hole 25 at the top of the shell.

[0032] Based on the above embodiment, the technical problem to be solved by the present application is the die casting defects such as material shortage, air hole and welding mark on the upper end of the shell. To this end, the design idea of the present application is to reduce the material thickness of the upper end of the shell and change the feeding direction in the product cavity. Reducing the material thickness can reduce the feeding time of the upper end of the shell, thereby reducing the gas remaining in the product cavity gathered at the upper end of the shell. Changing the feeding direction in the product cavity can change the last welding position of the metal raw material in the product cavity, thereby reducing the existence of material shortage, air hole and welding mark on the upper end of the shell. In order to achieve the above effect, the die casting mold of the present application comprises a movable mold assembly 2 and a fixed mold assembly 1, the movable mold assembly 2 is provided with a movable mold cavity block 6, the fixed mold assembly 1 is provided with a fixed mold cavity block 4, the movable mold cavity block 6 and the fixed mold cavity block 4 are combined to form a product cavity therebetween, the fixed mold assembly 1 is provided with a feeding channel 5 having one end communicated with the upper end of the fixed mold assembly 1 and the other end communicated with the product cavity, the middle position of the fixed mold cavity block 4 is provided with a profiling block 7, and the profiling block 7 is provided with a pin column 8. When the shell is die casting produced, the die casting mold is fixed on the die casting machine and the movable mold assembly 2 is moved relative to the fixed mold assembly 1 by the die casting machine, thereby completing the opening and closing mold action of the die casting mold. After the die casting machine drives the fixed mold cavity block 4 and the movable mold cavity block 6 to be combined by moving the movable mold assembly 2, the die casting machine injects the metal raw material into the product cavity through the feeding channel 5. The profiling block 7 inserted into the product cavity will make the metal raw material flowing into the product cavity flow along the side wall of the profiling block 7 when flowing to the side wall of the profiling block 7, so that the last welding part of the metal raw material will not appear at the upper end of the shell. The pin column 8 inserted into the profiling block 7 will form a material reducing hole 25 at the top of the shell to reduce the metal filled at the upper end of the shell, thereby reducing the thickness of the upper end of the shell, ensuring that the metal raw material can be filled more fully at the upper end of the shell. In this way, the die casting defects such as material shortage, air hole and welding mark on the upper end of the shell can be prevented.

[0033] Further, the profiled block 7 is embedded in the fixed mold cavity block 4.

[0034] Based on the above embodiment, the technical problem to be solved by the present application is how to exhaust the air in the product cavity. When the metal raw material flows into the product cavity, the air mixed in the metal raw material and the remaining air in the product cavity will be trapped in the product cavity, causing various die casting defects of the shell. Therefore, the profiled block 7 is embedded on the fixed mold cavity block 4, and the air trapped in the product cavity can be exhausted from the product cavity through the gap between the profiled block 7 and the fixed mold cavity block 4. In this way, the air in the product cavity can be exhausted.

[0035] Further, the profiled block 7 is embedded in the fixed mold cavity block 4.

[0036] Based on the above embodiment, the technical problem to be solved by the present application is how to achieve the connection between the profiled block 7 and the pin 8. Therefore, the present application provides an installation hole 9 for the pin 8 to pass through on the profiled block 7, a counterbore hole 10 with a larger diameter than the installation hole 9 is provided at the upper end of the installation hole 9, and a counterbore 11 with a larger diameter than the outer diameter of the pin 8 is provided at the end of the pin 8. When the pin 8 is inserted into the installation hole 9, the counterbore 11 abuts against the counterbore hole 10. In this way, the connection between the profiled block 7 and the pin 8 can be achieved.

[0037] Further, the profiled block 7 is embedded in the fixed mold cavity block 4.

[0038] Based on the above embodiment, the technical problem to be solved by the present application is how to exhaust the air in the product cavity. When the metal raw material flows into the product cavity, the air mixed in the metal raw material and the remaining air in the product cavity will be trapped in the product cavity, causing various die casting defects of the shell. Therefore, the profiled block 7 is embedded on the fixed mold cavity block 4, and the air trapped in the product cavity can be exhausted from the product cavity through the gap between the profiled block 7 and the fixed mold cavity block 4. In this way, the air in the product cavity can be exhausted.

[0039] Further, the die casting die further comprises a core pulling assembly 3, the core pulling assembly 3 is provided with a plurality of sliders 15 movably arranged on the movable die assembly 2 and side cores 14 connected to the front ends of the sliders 15, and the side away from the fixed die cavity block 4 of the profiling block 7 is provided with a through hole 16 arranged in the horizontal direction, one of the side cores 14 is movably arranged in the through hole 16.

[0040] Based on the above embodiment, the technical problem to be solved by the present application is how to prevent the profiling block 7 from being offset by the metal raw material when feeding. To this end, the die casting die further comprises a core pulling assembly 3, the core pulling assembly 3 is provided with a plurality of sliders 15 movably arranged on the fixed die assembly 1 and side cores 14 connected to the front ends of the sliders 15, and the side away from the fixed die cavity block 4 of the profiling block 7 is provided with a through hole 16 arranged in the horizontal direction, one of the side cores 14 is movably arranged in the through hole 16, after the movable die cavity block 6 and the fixed die cavity block 4 are attached, the core pulling assembly 3 drives the side core 14 to insert into the through hole 16 to limit the two degrees of freedom of the profiling block 7 in the horizontal direction. In this way, the profiling block 7 can be prevented from being offset by the metal raw material when feeding.

[0041] Further, the core pulling assembly 3 comprises: a first driving member 17 arranged on the side wall of the movable die assembly 2, one of the sliders 15 is connected to the output end of the first driving member 17; a plurality of second driving members 18 fixed on the fixed die assembly 1, the remaining sliders 15 are all provided with inclined holes 19 matched with the second driving members 18, when the movable die assembly 2 moves relative to the fixed die assembly 1, the sliders 15 are driven to move on the movable die assembly 2 by the movement of the second driving members 18 in the inclined holes 19.

[0042] Based on the above embodiment, the technical problem to be solved by the present application is how the core pulling assembly 3 realizes the movement of the side core 14 thereon. To this end, the core pulling assembly 3 of the present application comprises a first driving member 17 and a plurality of second driving members 18, the first driving member 17 is preferably an oil cylinder, which is arranged on the side wall of the movable die assembly 2, one of the sliders 15 is connected to the output end of the first driving member 17, before and after the fixed die cavity block 4 and the movable die cavity block 6 are attached, the first driving member 17 drives the sliders 15 to move on the movable die assembly 2 and in turn drives the side core 14 to move; the second driving members 18 are fixed on the fixed die assembly 1, the second driving members 18 are preferably inclined guide columns, the remaining sliders 15 are all provided with inclined holes 19 matched with the second driving members 18, when the movable die assembly 2 moves relative to the fixed die assembly 1, the sliders 15 are driven to move on the movable die assembly 2 by the movement of the second driving members 18 in the inclined holes 19. In this way, the movement of the core pulling assembly 3 driving the side core 14 can be realized.

[0043] Further, the die casting die of the present application further comprises an exhaust assembly, the exhaust assembly comprising: an upper exhaust block 20 connected to the fixed die assembly 1, a plurality of exhaust protrusions 21 being arrayed in the upper exhaust block 20; a lower exhaust block 22 connected to the movable die assembly 2, a plurality of exhaust recesses 23 being arrayed in the lower exhaust block 22, when the fixed die cavity block 4 and the movable die cavity block 6 are attached, the exhaust protrusions 21 are inserted into the exhaust recesses 23, and an exhaust passage is formed between the upper exhaust block 20 and the lower exhaust block 22; a second exhaust groove 24 provided on the movable die assembly 2, one end of the second exhaust groove 24 being communicated with the product cavity, and the other end of the second exhaust groove 24 being communicated with the exhaust passage.

[0044] Based on the above embodiment, the technical problem to be solved by the present application is how to further prevent the shell from having die casting defects such as material deficiency, air hole, and fusion mark. To this end, the die casting die of the present application further comprises an exhaust assembly, the exhaust assembly comprising: an upper exhaust block 20 connected to the fixed die assembly 1, a plurality of exhaust protrusions 21 being arrayed in the upper exhaust block 20; a lower exhaust block 22 connected to the movable die assembly 2, a plurality of exhaust recesses 23 being arrayed in the lower exhaust block 22, when the fixed die cavity block 4 and the movable die cavity block 6 are attached, the exhaust protrusions 21 are inserted into the exhaust recesses 23, and an exhaust passage is formed between the upper exhaust block 20 and the lower exhaust block 22; a second exhaust groove 24 provided on the movable die assembly 2, one end of the second exhaust groove 24 being communicated with the product cavity, and the other end of the second exhaust groove 24 being communicated with the exhaust passage, after the metal raw material flows into the product cavity, the gas in the product cavity is discharged from the die through the second exhaust groove 24 and the exhaust passage. In this way, the shell can be further prevented from having die casting defects such as material deficiency, air hole, and fusion mark.

[0045] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications also change accordingly.

[0046] In addition, the descriptions such as "first", "second", "one", etc. in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0047] In the present application, unless otherwise clearly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium, can be internal connection of two elements or interaction relationship between two elements, unless otherwise clearly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] In addition, the technical solutions among various embodiments of the present application can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application.

[0049] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but without deviating from the scope defined by the spirit of the present application.

Claims

1. A die-casting mold for a housing with anti-shortage function, comprising a fixed mold assembly and a moving mold assembly, characterized in that... The fixed mold assembly is provided with a fixed mold cavity block and a feeding channel, and the moving mold assembly is provided with a moving mold cavity block. The fixed mold cavity block is embedded in the middle position of the fixed mold assembly, and the moving mold cavity block is embedded in the middle position of the moving mold assembly. After the fixed mold cavity block and the moving mold cavity block are attached, a product cavity is formed between the fixed mold cavity block and the moving mold cavity block. One end of the feeding channel is connected to the top of the fixed mold assembly, and the other end of the feeding channel is connected to the product cavity; The fixed model cavity block is provided with a contour block that is inserted into the product cavity at the middle position, and a pin is inserted on the contour block; When the metal raw material enters the product cavity from the feeding channel, the contour block forms the top shape of the shell while changing the feeding direction of the metal raw material in the product cavity, and the pin forms a material reduction hole at the top of the shell. The contour block is provided with a mounting hole that penetrates the height direction of the contour block. The upper end of the mounting hole is provided with a countersunk hole with a diameter larger than that of the mounting hole. The end of the pin has a countersunk head with a diameter larger than that of the pin. When the pin is inserted into the mounting hole, the countersunk head is inserted into the countersunk head hole. The countersunk hole has several venting notches that communicate with the side wall of the contour block, and the top of the fixed model cavity block is provided with a first venting groove that communicates with the venting notches. It also includes a core-pulling assembly, which has several sliders movably disposed on the moving mold assembly and a side core connected to the front end of the slider. The contour block has a through hole arranged in the horizontal direction on the side away from the fixed mold cavity block, and one of the side cores is movably inserted into the through hole.

2. A die-casting mold for a housing with anti-shortage function as described in claim 1, characterized in that, The contour block is embedded within the fixed model cavity block.

3. A die-casting mold for a housing with anti-shortage function as described in claim 1, characterized in that, The core-pulling assembly includes: A first driving member is disposed on the side wall of the moving mold assembly, and one of the sliders is connected to the output end of the first driving member; Several second driving components are fixed on the fixed mold assembly, and the remaining sliders are provided with oblique holes that cooperate with the second driving components. When the moving mold assembly moves relative to the fixed mold assembly, the second driving components move in the oblique holes, thereby driving the sliders to move on the moving mold assembly.

4. A die-casting mold for a housing with anti-shortage function as described in claim 1, characterized in that, It also includes an exhaust assembly, which includes: An upper venting block is connected to the fixed mold assembly, and multiple venting protrusions are arrayed within the upper venting block. The lower exhaust block is connected to the moving mold assembly. Multiple exhaust grooves are arrayed inside the lower exhaust block. When the fixed mold cavity block and the moving mold cavity block are attached, the exhaust protrusion is inserted into the exhaust groove and an exhaust channel is formed between the upper exhaust block and the lower exhaust block. The second venting groove is disposed on the moving mold assembly. One end of the second venting groove is connected to the product cavity, and the other end of the second venting groove is connected to the venting channel.

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