Aluminum alloy die-casting die for oil pan

Abstract

The utility model discloses an oil pan aluminum alloy die-casting die which comprises a fixed die body and a movable die body provided with a sprue, a concave cavity is formed in the bottom face of the movable die body, and a section block is fixedly arranged on the top face of the fixed die body. A cavity defined by the mold block and the concave cavity forms a mold cavity; a cross gate and a plurality of ingates are arranged on the top surface of the fixed mold and positioned on one side of the mold block; a buffer ladle overflow groove is formed in each of the two ends of the cross gate; and a dual-positioning assembly is arranged between the fixed mold and the movable mold and is used for ensuring that the mold block accurately enters the concave cavity to form a mold cavity when the movable mold gets close to the fixed mold. According to the aluminum alloy die-casting die for the oil pan, the buffer ladle overflow grooves are formed in the two ends of the cross gate, residues at the front end of aluminum alloy liquid can be discharged into the buffer ladle overflow grooves, and it can be guaranteed that waste gas is discharged smoothly; the double positioning assemblies are used for coarse positioning and fine positioning, so that the mold blocks on the fixed mold enter the concave cavities in the movable mold to define the mold cavities, and the precision of produced products is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of die casting moulds, in particular to an aluminum alloy die casting mould for an oil pan. Background Art

[0002] The main function of the oil pan is to store oil, to prevent impurities from entering the engine, and to collect and store the lubricating oil flowing back from the friction surfaces of the engine components, to dissipate some heat, and to prevent the lubricating oil from oxidizing. Therefore, the oil pan is an important component of the engine. The current engine oil pan is cast using a traditional die-casting mold, which is prone to casting defects such as slag inclusions and pores. In addition, there will be a deviation in the docking during the relative movement between the fixed mold and the movable mold, resulting in the cavity and the mold block not being accurately matched, affecting the production of parts. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide an aluminum alloy die-casting mold for an oil pan.

[0004] The utility model provides an aluminum alloy die-casting mold for an oil pan, comprising a fixed mold and a movable mold provided with a straight runner, wherein a concave cavity is provided on the bottom surface of the movable mold, and a mold block is fixedly provided on the top surface of the fixed mold; a cavity enclosed by the mold block and the concave cavity constitutes a mold cavity; a cross runner and a plurality of inner runners are provided on the top surface of the fixed mold on one side of the mold block; a buffer bag overflow groove is provided at both ends of the cross runner; a double positioning component is provided between the fixed mold and the movable mold, for ensuring that when the movable mold approaches the fixed mold, the mold block accurately enters the interior of the concave cavity to form the mold cavity.

[0005] Furthermore, the inner runner includes a buffer groove connected to the cross runner, and a side of the buffer groove away from the cross runner is configured as a wavy slope connected to the cavity.

[0006] Furthermore, a plurality of exhaust grooves are provided on the fixed mold at one side and both ends of the mold block away from the cross runner, and the exhaust grooves include a slag collecting bag for collecting slag and an exhaust channel for exhausting gas.

[0007] Furthermore, the depth of the overflow trough of the buffer ladle is greater than the depth of the cross runner and the inner runner, so as to discharge the residue at the front end of the aluminum alloy liquid into the interior of the overflow trough of the buffer ladle.

[0008] Furthermore, the dual positioning assembly includes a first positioning assembly and a second positioning assembly; wherein,

[0009] The first positioning assembly is provided with four groups, and the four groups of the first positioning assemblies are distributed in a rectangular shape between the fixed mold and the movable mold, and are used for rough positioning between the fixed mold and the movable mold; the first positioning assembly includes a positioning column fixedly arranged on the top surface of the fixed mold, and the upper end of the positioning column is set to a cone; the bottom surface of the movable mold is provided with a positioning groove corresponding to the positioning column, and the end of the positioning groove close to the fixed mold is set to a flared end;

[0010] The second positioning components are provided with four groups, and the four groups of the second positioning components are distributed in a rectangular shape between the fixed mold and the movable mold, and are used for precise positioning between the fixed mold and the movable mold; the second positioning components include a limit block fixedly arranged on the top surface of the fixed mold and located on the inner side of the positioning column, and a limit groove is arranged on the bottom surface of the movable mold corresponding to the limit block.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model discloses an aluminum alloy die-casting mold for an oil pan, through the buffer bag overflow grooves arranged at both ends of the runner, the front end residue of the aluminum alloy liquid flowing in the runner can be discharged into the inside of the buffer bag overflow groove, which can ensure that the exhaust gas is smoothly discharged to the end of the exhaust channel along the exhaust channel for discharge, and at the same time, the cold material or impurities are smoothly squeezed into the inside of the slag bag, so as to solve the problem that the exhaust and slag are not smooth, thus causing gas residue inside the product, and there are many pores, inclusions and looseness inside the product, which eventually cause surface gap defects after product processing;

[0013] In addition, a double positioning component is provided. The first positioning component is used to perform rough positioning between the fixed mold and the movable mold, so that the movable mold moves toward the fixed mold. Then, the second positioning component is used to perform fine positioning between the fixed mold and the movable mold, so that the mold block on the fixed mold enters the concave cavity on the movable mold, enclosing and forming a mold cavity to ensure the accuracy of the produced products.

[0014] It should be understood that the contents described in the summary of the utility model are not intended to limit the key or important features of the embodiments of the utility model, nor are they intended to limit the scope of the utility model.

[0015] Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0017] Figure 1 A schematic structural diagram of an aluminum alloy die-casting mold for an oil pan provided in an embodiment of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the fixed mold;

[0019] Numbers in the figure: 1, fixed mold; 2, movable mold; 3, straight runner; 4, cross runner; 5, inner runner; 51, buffer groove; 52, wave-shaped slope; 6, buffer bag overflow groove; 7, mold block; 8, concave cavity; 9, mold cavity; 10, exhaust groove; 101, slag collecting bag; 102, exhaust channel; 11, first positioning assembly; 111, positioning column; 112, positioning groove; 12, second positioning assembly; 121, limit block; 122, limit groove. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings.

[0021] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] Please refer to Figures 1-2 The embodiment of the utility model provides an aluminum alloy die-casting mold for an oil pan, comprising a fixed mold 1 and a movable mold 2 provided with a sprue 3, a concave cavity 8 is provided on the bottom surface of the movable mold 2, and a mold block 7 is fixedly provided on the top surface of the fixed mold 1; the cavity enclosed by the mold block 7 and the concave cavity 8 corresponds to the shape of the oil pan to form a mold cavity 9;

[0023] A runner 4 and a plurality of ingates 5 are provided on the top surface of the fixed mold 1 on one side of the mold block 9; the runner 4 is connected to the sprue 3, and the aluminum alloy liquid is injected into the interior of the entire sprue through the sprue 3;

[0024] A buffer bag overflow groove 51 is provided at both ends of the cross runner 4; wherein, the depth of the buffer bag overflow groove 51 is greater than the depth of the cross runner 4 and the inner runner 5, and is used to discharge the front end residue of the aluminum alloy liquid into the interior of the buffer bag overflow groove 6, ensuring that the exhaust gas can be discharged smoothly along the exhaust duct 102.

[0025] A double positioning assembly is provided between the fixed mold 1 and the movable mold 2 to ensure that when the movable mold 2 approaches the fixed mold 1 , the mold block accurately enters the interior of the concave cavity 8 to form the mold cavity 9 .

[0026] In a preferred embodiment, the ingrowth 5 includes a buffer groove 51 connected to the cross runner 4, and the depth of the buffer groove 51 is greater than the depth of the cross runner 4, which is used to slow down the speed of the aluminum alloy liquid entering the cavity 9. The side of the buffer groove 51 away from the cross runner 4 is set to a wavy slope 52 connected to the cavity 9, so that the aluminum alloy liquid can enter the interior of the cavity 9 more smoothly.

[0027] In a preferred embodiment, a plurality of exhaust grooves 10 are provided on the fixed mold 1 at one side and both ends of the mold block 7 away from the cross runner 4. The exhaust grooves 10 include a slag collecting bag 101 for collecting slag and an exhaust channel 102 for exhausting gas.

[0028] In a preferred embodiment, the dual positioning assembly includes a first positioning assembly 11 and a second positioning assembly 12; wherein,

[0029] The first positioning assembly 11 is provided with four groups. The four groups of first positioning assemblies 11 are distributed in a rectangular shape between the fixed mold 1 and the movable mold 2, and are used for rough positioning between the fixed mold 1 and the movable mold 2; the first positioning assembly 11 includes a positioning column 111 fixedly arranged on the top surface of the fixed mold 1, and the upper end of the positioning column 111 is set to a cone; the bottom surface of the movable mold 2 is provided with a positioning groove 112 corresponding to the positioning column 111, and the end of the positioning groove 112 close to the fixed mold 1 is set to a flared end, which can make it easier for the positioning column 111 to quickly enter the interior of the positioning groove 112, so as to achieve rapid and rough docking between the fixed mold 1 and the movable mold 2;

[0030] The second positioning components 12 are provided with four groups. The four groups of second positioning components 12 are distributed in a rectangular shape between the fixed mold 1 and the movable mold 2, and are used for precise positioning between the fixed mold 1 and the movable mold 2; the second positioning components 12 include a limit block 121 fixedly arranged on the top surface of the fixed mold 1 and located on the inner side of the positioning column 111, and a limit groove 122 is arranged on the bottom surface of the movable mold 2 corresponding to the limit block 121. The setting of the limit block 121 and the limit groove 122 can make the mold block 7 and the cavity 8 accurately docked to obtain a precise cavity 9, so as to produce high-precision product parts.

[0031] The working principle of this utility model:

[0032] Move the movable mold 2 toward the fixed mold 1, and with the cooperation between the positioning column 111 and the positioning groove 112, the fixed mold 1 and the movable mold 2 are quickly roughly positioned to achieve rapid rough docking; with the cooperation between the limit block 121 and the limit groove 122, the fixed mold 1 and the movable mold 2 are quickly precisely positioned, so that the mold block 7 and the cavity 8 are quickly docked to form a precise cavity 9; after all other aspects are prepared, aluminum alloy liquid is injected into the inside of the cross runner 4 through the straight runner 3, and the impurities at the front end of the aluminum alloy liquid in the cross runner 4 are discharged into the inside of the buffer bag overflow groove 6, which can ensure that the exhaust gas is smoothly discharged along the exhaust duct 102 The liquid aluminum alloy is discharged to the end of the exhaust channel 102, and the cold material or impurities are smoothly squeezed into the slag bag 101 to solve the problem of poor exhaust and slag discharge, which leads to residual gas inside the product, more pores, inclusions and looseness inside the product, and finally causes surface void defects after product processing; then as the injection amount of aluminum alloy liquid increases, the aluminum alloy liquid inside the cross runner 4 enters the ingrowth 5, and the ingrowth 5 is provided with a buffer groove 51 and a wavy slope 52, so that the aluminum alloy liquid enters the interior of the cavity 9 more smoothly, avoiding the problems of pores, inclusions and other problems on the product caused by the rapid filling of the cavity 9 by the aluminum alloy liquid.

[0033] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] In the description of this specification, the description of the terms "one embodiment", "some embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An aluminum alloy die-casting mold for an oil pan, characterized in that: It comprises a fixed mold and a movable mold provided with a straight runner, wherein a concave cavity is provided on the bottom surface of the movable mold, and a mold block is fixedly provided on the top surface of the fixed mold; a cavity enclosed by the mold block and the concave cavity constitutes a mold cavity; a cross runner and a plurality of inner runners are provided on the top surface of the fixed mold on one side of the mold block; a buffer bag overflow groove is provided at both ends of the cross runner; a double positioning component is provided between the fixed mold and the movable mold, for ensuring that the mold block accurately enters the interior of the concave cavity to form the mold cavity when the movable mold approaches the fixed mold.

2. The aluminum alloy die-casting mold for the oil pan according to claim 1, characterized in that: The inner runner comprises a buffer groove connected to the cross runner, and a side of the buffer groove away from the cross runner is arranged as a wave-shaped slope surface connected to the cavity.

3. The aluminum alloy die-casting mold for the oil pan according to claim 2, characterized in that: A plurality of exhaust grooves are arranged on the fixed mold at one side and both ends of the mold block away from the cross runner, and the exhaust grooves include a slag collecting bag for collecting slag and an exhaust channel for exhausting gas.

4. The aluminum alloy die-casting mold for the oil pan according to claim 3, characterized in that: The depth of the overflow trough of the buffer ladle is greater than the depth of the cross runner and the inner runner, and is used to discharge the residue at the front end of the aluminum alloy liquid into the interior of the overflow trough of the buffer ladle.

5. The aluminum alloy die-casting mold for the oil pan according to claim 4, characterized in that: The dual positioning assembly includes a first positioning assembly and a second positioning assembly; wherein, The first positioning assembly is provided with four groups, and the four groups of the first positioning assemblies are distributed in a rectangular shape between the fixed mold and the movable mold, and are used for rough positioning between the fixed mold and the movable mold; the first positioning assembly includes a positioning column fixedly arranged on the top surface of the fixed mold, and the upper end of the positioning column is set to a cone; the bottom surface of the movable mold is provided with a positioning groove corresponding to the positioning column, and the end of the positioning groove close to the fixed mold is set to a flared end; The second positioning components are provided with four groups, and the four groups of the second positioning components are distributed in a rectangular shape between the fixed mold and the movable mold, and are used for precise positioning between the fixed mold and the movable mold; the second positioning components include a limit block fixedly arranged on the top surface of the fixed mold and located on the inner side of the positioning column, and a limit groove is arranged on the bottom surface of the movable mold corresponding to the limit block.

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