Casting mold for motor shell of automobile engine

Abstract

The utility model provides a casting mould of an automobile engine motor shell, which belongs to the technical field of moulds and comprises a mould base and an upper mould, a left opening, a right opening, a front opening and a rear opening are arranged on the mould base in a cross shape, and a left mould, a right mould, a front mould and a rear mould are respectively arranged in the left opening, the right opening, the front opening and the rear opening in a sliding mode. The mold base, the left mold, the right mold, the front mold, the rear mold and the upper mold are assembled to form a cavity, guide rail sliding block structures are arranged between the left mold, the right mold, the front mold and the rear mold and the mold base, and a casting opening communicated with the cavity is formed in the bottom of the mold base. The four-direction mold opening structure is adopted for the motor shell of the automobile engine, the problem that a traditional metal casting mold is difficult to demold due to the fact that the outer wall structure is complex is solved, a metal mold is adopted for replacing a traditional sand mold, the size precision of a casting can be remarkably improved, the requirement for follow-up machining is reduced, and the cost is reduced. Therefore, cost and time are reduced.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a casting mold for an automobile engine motor housing. Background Technology

[0002] Casting molds are crucial tools for producing metal castings, widely used in the automotive, aerospace, and construction machinery industries. The design and manufacture of molds must consider the shape, dimensional accuracy, and shrinkage rate of the castings. Although the initial investment in casting molds is high, their high efficiency and precision in mass production make them an indispensable part of modern manufacturing.

[0003] like Figure 4 As shown, A is a car engine motor housing. Due to its complex outer wall structure and internal cooling channels, it is difficult to design metal casting molds. Sand casting molds are usually used for production. However, the surface of castings produced by sand casting is relatively rough, requiring subsequent processing to achieve higher surface quality. At the same time, the dimensional accuracy of sand casting is low, and sand molds are usually used only once, making them unsuitable for mass production. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings and deficiencies of the existing technology and to provide a casting mold for the housing of an automobile engine motor.

[0005] The technical solution adopted by this utility model is as follows: This application provides a casting mold for an automobile engine motor housing, including a mold base and an upper mold. The mold base is provided with a left opening, a right opening, a front opening and a rear opening in a cross shape. A left mold, a right mold, a front mold and a rear mold are slidably disposed in the left opening, the right opening, the front opening and the rear opening respectively. The mold base, the left mold, the right mold, the front mold and the rear mold and the upper mold are closed to form a cavity. A guide rail slider structure is provided between the left mold, the right mold, the front mold and the rear mold and the mold base. A casting port communicating with the cavity is provided at the bottom of the mold base.

[0006] In some embodiments, the guide rail slider structure includes two guide rails spaced apart on the mold base and two sliders disposed on the corresponding mold.

[0007] In some embodiments, the left mold, right mold, front mold, and rear mold are all provided with a limiting structure between themselves and the mold base. The limiting structure includes a limiting groove provided on both sides of each opening. The limiting groove is provided along the moving direction of the corresponding mold, and the two sides of the corresponding mold are provided with limiting blocks that are adapted to and slide in cooperation with the limiting groove.

[0008] In some embodiments, the central protrusion of the mold base is provided with a bottom mold, the bottom mold includes a limiting plate portion, and the left mold, right mold, front mold and rear mold are each provided with a limiting groove portion adapted to the limiting plate portion. When the left mold, right mold, front mold and rear mold are closed, the limiting groove portion abuts against the limiting plate portion.

[0009] In some embodiments, the upper mold is provided with an inner mold core facing the mold base, and the left mold, right mold, front mold and rear mold are respectively provided with corresponding outer mold cores.

[0010] In some embodiments, the system further includes a flow channel sand core, wherein positioning protrusions are provided on both sides of the flow channel sand core, and positioning grooves adapted to the positioning protrusions are provided on the left mold and right mold or the front mold and rear mold.

[0011] In some embodiments, a demolding mechanism is further included, which includes a first plate, a second plate, and a third plate. The first plate is disposed above the upper mold, and connecting rods are provided at the four corners between the two. A plurality of guide rods are provided between the first plate and the upper mold. The second plate is attached to the upper surface of the third plate, and both are slidably disposed along the guide rods. A plurality of reset rods are provided between the second plate and the upper mold, and the reset rods are used to reset the second plate. A plurality of ejector pins are provided on the second plate facing the inner mold core, and the plurality of ejector pins are circumferentially disposed on the outer periphery of the inner mold core.

[0012] In some embodiments, the upper mold is provided with a plurality of buffer limiting posts facing the third plate.

[0013] In some embodiments, a driver is provided at each of the four corners of the mold base, and the driver is used to open and close the upper mold.

[0014] In some embodiments, the mold base is provided with a plurality of U-shaped fixing holes, with one end of the opening of the U-shaped fixing holes facing outward.

[0015] The beneficial effects of this utility model are as follows: This utility model addresses the problem of difficult demolding of traditional metal casting molds due to the complex outer wall structure of automobile engine motor housings by adopting a four-way mold opening structure. By using a metal mold instead of a traditional sand mold, the dimensional accuracy of the castings can be significantly improved, the need for subsequent processing can be reduced, thereby reducing costs and time.

[0016] Secondly, the guide rail slider structure further ensures the accuracy of mold sliding during operation, prevents mold misalignment or deformation, and improves the dimensional consistency of finished products.

[0017] Furthermore, through modular design, the complexity of a single mold component is broken down into various modules, reducing the overall mold design and manufacturing difficulty. At the same time, the processing and maintenance of modular molds are more convenient, extending the mold's service life. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0019] Figure 1 This is a schematic diagram of a casting mold for an automobile engine motor housing according to the present invention;

[0020] Figure 2 This is an exploded view of a casting mold for an automobile engine motor housing according to the present invention.

[0021] Figure 3 This is a cross-sectional view of a casting mold for an automobile engine motor housing according to the present invention.

[0022] Figure 4 This is a schematic diagram of the left mold, right mold, automobile engine motor housing, and flow channel sand core in this utility model;

[0023] Figure 5 This is a schematic diagram of the upper mold and the demolding mechanism in this utility model. Detailed Implementation

[0024] The following description provides specific application scenarios and requirements for this specification, intended to enable those skilled in the art to make and use the contents of this specification. Various partial modifications to the disclosed embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments and applications without departing from the spirit and scope of this specification. Therefore, this specification is not limited to the embodiments shown, but rather to the widest scope consistent with the claims.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "longitudinal", "lateral", "radial", "length", "width", "thickness", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element or component to have a specific orientation, or to be constructed and operated in a specific orientation.

[0026] Secondly, the terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are merely used to distinguish different components and should not be construed as limiting the embodiments of this application.

[0027] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral constructions; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two devices, components, or parts.

[0028] Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] Regarding the accompanying drawings of this application, it should be clearly understood that the drawings are for illustrative and descriptive purposes only and are not intended to limit the scope of this specification. It should also be understood that the drawings are not drawn to scale.

[0030] A housing for a new energy vehicle engine motor, such as Figure 4 As shown in Figure A, the complex outer wall structure and internal cooling channels make the design and production of metal casting molds difficult, thus sand casting is usually chosen for manufacturing. However, sand casting also has significant disadvantages, such as high surface roughness of the castings, requiring subsequent machining to improve surface quality; lower dimensional accuracy, which may affect the matching of critical parts; and sand molds are for single use only, making them unsuitable for mass production, increasing production costs and time.

[0031] Based on the above issues, such as Figures 1 to 5 As shown in the figure, this specification provides a casting mold for an automotive engine motor housing, including a mold base 1 and an upper mold 2. The mold base 1 has a cross-shaped left opening, a right opening, a front opening, and a rear opening. A left mold, a right mold, a front mold, and a rear mold are slidably disposed in the left opening, right opening, front opening, and rear opening, respectively. The mold base 1, the left mold, the right mold, the front mold, the rear mold, and the upper mold 2 are closed to form a cavity. A guide rail slider structure 3 is provided between the left mold, the right mold, the front mold, and the rear mold and the mold base 1. The bottom of the mold base 1 is provided with a casting port 4 communicating with the cavity. With this configuration, for the new energy vehicle engine motor housing, by adopting a four-way opening mold structure, the problem of difficult demolding of traditional metal casting molds due to the complex outer wall structure is solved. By using a metal mold instead of a traditional sand mold, the dimensional accuracy of the casting can be significantly improved, the need for subsequent processing can be reduced, thereby reducing costs and time.

[0032] Secondly, the guide rail slider structure 3 further ensures the accuracy of mold sliding during operation, prevents mold misalignment or deformation, and improves the dimensional consistency of finished products.

[0033] Furthermore, through modular design, the complexity of a single mold component is broken down into various modules, reducing the overall mold design and manufacturing difficulty. At the same time, the processing and maintenance of modular molds are more convenient, extending the mold's service life.

[0034] In some embodiments, such as Figure 1 and Figure 2 As shown, the guide rail and slider structure 3 includes two guide rails 30 spaced apart on the mold base 1 and two sliders 31 disposed on the corresponding mold. This arrangement ensures the motion accuracy of the mold during the opening and closing process.

[0035] In other embodiments, the number of guide rails 30 and sliders 31 can be adjusted as needed, and their positions can also be adjusted, i.e., the guide rails 30 are set on the mold, and the sliders 31 are set on the mold base 1.

[0036] In some embodiments, the left mold, right mold, front mold, and rear mold are all provided with a limiting structure 5 between themselves and the mold base 1. The limiting structure 5 includes a limiting groove 50 disposed on both sides of each opening. The limiting groove 50 is disposed along the moving direction of the corresponding mold. The two sides of the corresponding mold are provided with limiting blocks 51 that are adapted to and slide in cooperation with the limiting groove 50. The cooperation between the limiting groove 50 and the limiting block 51 can accurately control the position of the left mold, right mold, front mold, and rear mold on the mold base 1, ensuring that the mold can be accurately aligned each time the mold is closed, thereby improving the dimensional accuracy and consistency of the casting.

[0037] The limiting groove 50 is detachably connected to the corresponding mold.

[0038] It is understandable that there can be multiple limit structures 5, which generally adopt a slider and groove structure.

[0039] In some embodiments, the mold base 1 has a bottom mold 6 provided on the central protrusion. The bottom mold 6 includes a limiting plate 60. The left mold, right mold, front mold and rear mold are each provided with a limiting groove 61 that matches the limiting plate 60. When the left mold, right mold, front mold and rear mold are closed, the limiting groove 61 abuts against the limiting plate 60. The precise fit between the limiting plate 60 and the limiting groove 61 ensures that each mold module can be accurately aligned when the mold is closed, which improves the dimensional accuracy and consistency of the casting and reduces casting defects caused by positional deviation.

[0040] In some embodiments, the upper mold 2 is provided with an inner mold core 7 facing the mold base 1, and the left mold, right mold, front mold and rear mold are respectively provided with corresponding outer mold cores 8.

[0041] In some embodiments, the system also includes a flow channel sand core 9, on both sides of which are provided positioning protrusions 10. The left mold and right mold or the front mold and rear mold are provided with positioning grooves 11 that are adapted to the positioning protrusions 10. Before casting, the flow channel sand core 9 is positioned in the cavity by the cooperation of the positioning protrusions 10 and the positioning grooves 11. After casting, the casting is placed on a sand-vibrating table to break the flow channel sand core 9. In this way, a new energy vehicle engine motor housing with an internal cooling flow channel can be formed.

[0042] In some embodiments, a demolding mechanism is further included, comprising a first plate 12, a second plate 13, and a third plate 14. The first plate 12 is disposed above the upper mold 2, and connecting rods 15 are provided at the four corners of both. A plurality of guide rods 16 are provided between the first plate 12 and the upper mold 2. The second plate 13 is attached to the upper surface of the third plate 14, and both are slidably disposed along the guide rods 16. A plurality of reset rods 17 are provided between the second plate 13 and the upper mold 2, and the reset rods 17 are used to reset the second plate 13. A plurality of ejector pins 18 are provided on the second plate 13 facing the inner mold core 7. The plurality of ejector pins 18 are circumferentially disposed on the outer periphery of the inner mold core 7. This arrangement avoids the offset or tilting of the plate and ensures that the force direction of the ejector pins 18 always remains vertical, thereby improving the accuracy of the demolding process and reducing the defect rate of the casting.

[0043] Secondly, the ejector pins 18 are distributed circumferentially around the outer periphery of the inner mold core 7. Through uniform ejection force, the casting can be effectively separated from the inner mold core, avoiding deformation or damage to the casting during demolding and improving demolding efficiency.

[0044] Furthermore, the reset rod 17 provides a reliable reset function for the second plate 13. After the ejector pin 18 completes the demolding action, the reset rod 17 can automatically return the second plate 13 to its original position, preparing it for the next demolding operation. This automatic reset function reduces manual intervention and improves the level of production automation. The reset rod 17 can be a spring-loaded reset rod.

[0045] In some embodiments, the upper mold 2 is provided with a plurality of buffer limiting posts 19 facing the third platen 14, which can extend the service life of the mold and reduce maintenance costs and frequency by absorbing impact force and limiting excessive movement of the mold.

[0046] In some embodiments, a driver is provided at each of the four corners of the mold base 1. The driver is used to open and close the upper mold 2 to ensure the stability of the opening and closing of the upper mold 2. Furthermore, for larger parts like this casting, the driver is usually a hydraulic cylinder.

[0047] In some embodiments, the mold base 1 is provided with a plurality of U-shaped fixing holes 20, with one end of the opening of the U-shaped fixing holes 20 facing outward. The use of U-shaped fixing holes 20 reduces the time required for installation and disassembly. The connector can be removed or adjusted without completely pulling it out.

[0048] In summary, after reading this detailed disclosure, those skilled in the art will understand that the foregoing detailed disclosure is presented by way of example only and is not restrictive. Although not explicitly stated herein, those skilled in the art will understand that the requirements of this application encompass various reasonable changes, improvements, and modifications to the embodiments. These changes, improvements, and modifications are intended to be made by this application and are within the spirit and scope of the exemplary embodiments of this application.

[0049] Furthermore, it should be understood that in the foregoing description of the embodiments of this application, various features are combined in a single embodiment, drawing, or description for the purpose of simplifying the understanding of a feature. However, this does not mean that the combination of these features is necessary, and those skilled in the art may readily identify some of the devices as separate embodiments when reading this application. That is, the embodiments in this application can also be understood as an integration of multiple sub-embodiments. It is also valid when each sub-embodiment contains fewer than all the features of a single foregoing disclosed embodiment.

[0050] Finally, it should be understood that the embodiments disclosed herein are illustrative of the principles of the embodiments of this application. Other modified embodiments are also within the scope of this application. Therefore, the embodiments disclosed herein are merely examples and not limitations. Those skilled in the art can adopt alternative configurations to implement the applications in this application based on the embodiments in this application. Therefore, the embodiments of this application are not limited to the embodiments precisely described in the application.

Claims

1. A casting mold for an automobile engine motor housing, characterized by, The utility model provides a moulding device, including mould base (1) with upper die (2), the mould base (1) is provided with left opening, right opening, front opening and rear opening in cross shape, the left opening, right opening, front opening and rear opening are slid respectively in left mould, right mould, front mould and rear mould, the mould base (1), left mould, right mould, front mould, rear mould and upper die (2) are closed mould and form the cavity, the left mould, right mould, front mould and rear mould are all with guide rail sliding block structure (3) between mould base (1), the bottom of mould base (1) is provided with the casting mouth (4) of communication with cavity, upper die (2) is provided with inner mould core (7) towards mould base (1), and left mould, right mould, front mould and rear mould are provided with corresponding outer mould core (8) respectively, still include demoulding mechanism, the demoulding mechanism includes first flat plate (12), second flat plate (13) and third flat plate (14), first flat plate (12) is set up in the upper of upper die (2), and both between four corners are provided with connecting rod (15), a plurality of guide rod (16) are provided between first flat plate (12) and upper die (2), second flat plate (13) is attached to third flat plate (14) upper end face, and both are slid along guide rod (16) and are set up, a plurality of reset rod (17) are provided between second flat plate (13) and upper die (2), the reset rod (17) is used for the reset of second flat plate (13), a plurality of thimble (18) are provided on second flat plate (13) towards inner mould core (7), a plurality of thimble (18) circumferential setting is in the outer periphery of inner mould core (7).

2. The casting mold for an automobile engine motor housing according to claim 1, wherein The guide rail sliding block structure (3) includes two guide rails (30) spaced apart on the mold base (1) and two sliders (31) provided on the corresponding mold.

3. The casting mold for an automobile engine motor housing according to claim 1, wherein The left mold, right mold, front mold and rear mold are all provided with a limiting structure (5) between the mold base (1), the limiting structure (5) includes a limiting groove (50) provided on both sides of each opening, the limiting groove (50) is arranged along the moving direction of the corresponding mold, and the limiting blocks (51) are provided on both sides of the corresponding mold and slidably matched with the limiting groove (50).

4. The casting mold for an automobile engine motor housing according to claim 1, wherein The middle protrusion of the mold base (1) is provided with a bottom mold (6), the bottom mold (6) includes a limiting disc part (60), and the left mold, the right mold, the front mold and the rear mold are all provided with a limiting groove part (61) matched with the limiting disc part (60), when the left mold, the right mold, the front mold and the rear mold are closed, the limiting groove part (61) abuts against the limiting disc part (60).

5. The casting mold for an automobile engine motor housing according to claim 1, wherein It also includes a flow channel sand core (9), both sides of the flow channel sand core (9) are provided with positioning lugs (10), and the left mold and the right mold or the front mold and the rear mold are provided with positioning grooves (11) matched with the positioning lugs (10).

6. The casting mold for an automobile engine motor housing according to claim 1, wherein A plurality of buffer limiting columns (19) are provided on the upper die (2) towards the third flat plate (14).

7. The casting mold for an automobile engine motor housing according to claim 1, wherein The mold base (1) is provided with a driver at each corner, and the driver is used to open and close the mold of the upper die (2).

8. The casting mold for an automobile engine motor housing according to claim 1, wherein The mold base (1) is provided with a plurality of U-shaped fixing holes (20), and the opening end of the U-shaped fixing hole (20) faces outward.

Images