Hub mold facilitating resetting of demolding ejector rod

Abstract

The utility model discloses a hub mold facilitating demolding ejector rod resetting. The hub mold comprises an installing plate, an ejector rod pressing plate, an ejector rod fixing plate, an upper mold plate, a mold core panel, an installing and connecting column and a copper sleeve. The inner ring lubricating ejector rods are mounted on the mold core panel; the outer ring lubricating ejector rods are mounted on the ejector rod fixing plate, and the outer ring lubricating ejector rods and the inner ring lubricating ejector rods are the same in structure; the ejector rod lubricating structure is used for reducing friction force generated when the inner ring lubricating ejector rod and the outer ring lubricating ejector rod are ejected out and reset; due to the arrangement of the ejector rod lubricating structure, a small amount of continuous self-lubrication of the ejector rod can be realized, the service life of the ejector rod is prolonged, and the die repairing frequency is reduced; through the arrangement of the pressing plate guide column and the reset spring, after a casting is ejected out, the ejector rod can be driven to reset in time, the situation that the ejector rod is bent or broken due to clamping is avoided, and through the arrangement of the reset rod and the reset hole, it is guaranteed that the ejector rod is completely reset when a mold is closed downwards.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum alloy wheel hub casting molds, in particular to a wheel hub mold which is convenient for demoulding and ejecting rods to reset. Background Art

[0002] Low-pressure casting is one of the most important production processes for aluminum alloy wheels, and casting ejection is a key step. During production, castings are primarily ejected directly using traditional ejector pins, which are then reset by pressing down on the mold. Traditional ejector pins lack automatic reset and lubrication devices. Currently, ejector pin lubrication is typically achieved by operators applying high-temperature lubricant multiple times during production. This is difficult to achieve due to the difficulty in applying lubricant, ensuring consistent lubrication across all ejector pins, and the resulting situation where some ejector pins fail to fully eject.

[0003] During the low-pressure casting process of aluminum alloy wheels, after the casting is filled, the upper mold drives the casting upward, and then the ejector pin ejects the casting. The traditional ejector pin reset structure cannot achieve timely reset. If the casting is not completely ejected, the ejector pin cannot be ejected a second time. Abnormalities may occur during the production process, such as flash jamming, aluminum sticking to the bottom mold, and paint repair, which require a long time to handle. If the ejector pin is not reset during the abnormality handling process, if there is aluminum sticking to the ejection area of ​​the ejector pin, it will be difficult to reset the ejector pin after the aluminum sticking cools, resulting in improper mold closing and aluminum leakage. Forced reset will cause the ejector pin to bend or break, resulting in increased mold repair times and affecting production efficiency.

[0004] Based on this, a wheel hub mold is developed which is convenient for demoulding and reset of the ejector pin, so as to realize self-lubrication and self-reset of the ejector pin. Summary of the Invention

[0005] The utility model aims to solve one of the technical problems existing in the prior art.

[0006] The present application provides a wheel hub mold that facilitates the reset of a demoulding ejector pin, comprising:

[0007] Mounting plate, ejector plate, ejector fixing plate, upper template, core panel, mounting column, copper sleeve;

[0008] Also includes:

[0009] a plurality of inner ring lubricating ejector pins mounted on the core panel;

[0010] A plurality of outer ring lubricating ejector pins, which are mounted on the ejector pin fixing plate and have the same structure as the inner ring lubricating ejector pins;

[0011] The ejector rod lubrication structure is used to reduce the friction between the inner ring lubricating ejector rod and the outer ring lubricating ejector rod when ejecting and resetting.

[0012] The ejector rod lubrication structure includes:

[0013] An inner ring lubrication groove is provided on the push rod pressure plate;

[0014] An outer ring lubrication groove is provided on the push rod pressure plate;

[0015] Wherein, the inner ring lubricating push rod is located directly below the inner ring lubricating groove, and the outer ring lubricating push rod is located directly below the outer ring lubricating groove.

[0016] The ejector rod lubrication structure also includes:

[0017] A plurality of pressure plate lubrication channels, which are arranged on the inner ring lubrication groove and the outer ring lubrication groove and pass through the push rod pressure plate;

[0018] Wherein, the pressure plate lubrication channel is provided above the inner ring lubrication push rod and the outer ring lubrication push rod.

[0019] The ejector rod lubrication structure also includes:

[0020] A push rod hole is provided on the core panel and the push rod fixing plate;

[0021] A push rod lubrication groove is provided at the top of the inner ring lubrication push rod and the outer ring lubrication push rod;

[0022] a plurality of ejector rod lubrication channels, which are distributed in an evenly spaced circumferential array on the ejector rod lubrication groove and connect the ejector rod lubrication groove with the ejector rod hole;

[0023] Wherein, the inner ring lubricating push rod and the outer ring lubricating push rod are both installed in the push rod hole.

[0024] A slight gap is left between the inner ring lubricating push rod and the outer ring lubricating push rod and the push rod hole.

[0025] The inner ring lubrication groove and the outer ring lubrication groove are both filled with high-temperature grease, which melts under the high temperature of the external mold to form lubricating oil, and flows into the pressure plate lubrication channel, the ejector rod lubrication groove, the ejector rod lubrication channel, and the ejector rod hole in sequence. The area where the lubricating oil can flow into is stepped.

[0026] Also includes:

[0027] A pressure plate guide post, which is fixedly connected to the upper end of the upper template;

[0028] A return spring has one end sleeved and pressed against the upper end of the pressure plate guide column, and the other end sleeved and pressed against the lower end of the push rod fixing plate.

[0029] The return spring is made of high temperature resistant material.

[0030] Also includes:

[0031] Reset rods, which are respectively fixedly connected to the four corners of the top rod fixing plate;

[0032] A reset hole is provided on the upper template and corresponds to and coincides with the reset rod.

[0033] The beneficial effects of the utility model are as follows:

[0034] 1. Through the setting of the ejector rod lubrication structure, the inner ring lubrication ejector rod and the outer ring lubrication ejector rod can achieve a small amount of continuous self-lubrication, reducing the bending or breakage caused by increased friction due to insufficient lubrication, extending the service life of the inner ring lubrication ejector rod and the outer ring lubrication ejector rod, and reducing the number of mold repairs;

[0035] 2. Through the setting of the pressure plate guide pin and the reset spring, after the material mold is opened and the casting is ejected, the ejector pressure plate and the ejector fixing plate are reset to a certain extent after the inner ring lubricated ejector and the outer ring lubricated ejector are ejected, driving them to reset in time to avoid bending or breakage due to jamming. Through the setting of the reset rod and the reset hole, when the external mold is closed downward, it is ensured that the inner ring lubricated ejector and the outer ring lubricated ejector are completely reset. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic structural diagram of a wheel hub mold that facilitates the reset of the demoulding ejector pin in an embodiment of the present application;

[0037] Figure 2 This is a schematic diagram of the exploded structure of a wheel hub mold that facilitates the reset of the demoulding ejector pin in an embodiment of the present application;

[0038] Figure 3 This is a structural diagram of the push rod and pressure plate in the embodiment of the present application;

[0039] Figure 4 This is a schematic structural diagram of the ejector fixing plate in an embodiment of the present application;

[0040] Figure 5 This is a schematic structural diagram of the inner ring lubrication ejector rod in an embodiment of the present application;

[0041] Figure 6 This is a top view of the inner ring lubrication ejector rod in an embodiment of the present application;

[0042] Figure 7 for Figure 1 Schematic diagram of the cross-sectional structure in the AA direction;

[0043] Figure 8 for Figure 7 for Figure 1 Schematic diagram of the enlarged structure at point B.

[0044] Reference numerals

[0045] 1-mounting plate, 2-rod pressure plate, 3-rod fixing plate, 4-upper template, 5-core panel, 6-mounting column, 7-copper sleeve, 8-inner ring lubrication push rod, 9-outer ring lubrication push rod, 10-rod lubrication structure, 101-inner ring lubrication groove, 102-outer ring lubrication groove, 103-pressure plate lubrication channel, 104-rod hole, 105-rod lubrication groove, 106-rod lubrication channel, 111-pressure plate guide column, 112-reset spring, 113-reset rod, 114-reset hole. DETAILED DESCRIPTION

[0046] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0047] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0048] In the following, in conjunction with the accompanying drawings, a wheel hub mold that facilitates the resetting of the demoulding ejector pin provided by the embodiment of the present application is described in detail through specific embodiments and application scenarios.

[0049] Example 1:

[0050] like Figures 1 to 8 As shown, the embodiment of the present application provides a wheel hub mold that is convenient for demolding ejector pins to be reset, including a mounting plate 1, an ejector pin pressure plate 2, an ejector pin fixing plate 3, an upper template 4, a core panel 5, a mounting column 6, and a copper sleeve 7; it also includes a plurality of inner ring lubricating ejector pins 8, which are installed on the core panel 5; a plurality of outer ring lubricating ejector pins 9, which are installed on the ejector pin fixing plate 3 and have the same structure as the inner ring lubricating ejector pins 8; and an ejector pin lubrication structure 10, which is used to reduce the friction between the inner ring lubricating ejector pins 8 and the outer ring lubricating ejector pins 9 during ejection and reset.

[0051] Furthermore, the push rod lubrication structure 10 includes an inner ring lubrication groove 101, which is arranged on the push rod pressure plate 2; and an outer ring lubrication groove 102, which is arranged on the push rod pressure plate 2; wherein, the inner ring lubrication push rod 8 is located directly below the inner ring lubrication groove 101, and the outer ring lubrication push rod 9 is located directly below the outer ring lubrication groove 102.

[0052] Furthermore, the push rod lubrication structure 10 also includes a plurality of pressure plate lubrication channels 103, which are arranged on the inner ring lubrication groove 101 and the outer ring lubrication groove 102, and pass through the push rod pressure plate 2; wherein, the pressure plate lubrication channels 103 are provided above the inner ring lubrication push rod 8 and the outer ring lubrication push rod 9.

[0053] Furthermore, the ejector rod lubrication structure 10 also includes an ejector rod hole 104, which is arranged on the core panel 5 and the ejector rod fixing plate 3; an ejector rod lubrication groove 105, which is arranged at the top position of the inner ring lubrication ejector rod 8 and the outer ring lubrication ejector rod 9; a plurality of ejector rod lubrication channels 106, which are distributed in an equally spaced circular array on the ejector rod lubrication groove 105 and connect the ejector rod lubrication groove 105 with the ejector rod hole 104; wherein, the inner ring lubrication ejector rod 8 and the outer ring lubrication ejector rod 9 are both installed in the ejector rod hole 104.

[0054] Furthermore, a slight gap is left between the inner ring lubricating push rod 8 and the outer ring lubricating push rod 9 and the push rod hole 104 .

[0055] Furthermore, the inner ring lubrication groove 101 and the outer ring lubrication groove 102 are both filled with high-temperature grease, which melts under the high temperature of the external mold to form lubricating oil, and flows into the pressure plate lubrication channel 103, the push rod lubrication groove 105, the push rod lubrication channel 106, and the push rod hole 104 in sequence, and the area where the lubricating oil can flow into is stepped.

[0056] In this embodiment of the present application, due to the adoption of the above-mentioned structure, the upper part of the mounting plate 1 is fixedly connected to the external casting table, an external upper mold is installed below the upper mold plate 4, four mounting columns 6 are provided between the mounting plate 1 and the upper mold plate 4, and the four mounting columns 6 are used to fix the mounting plate 1 and the upper mold plate 4. The ejector plate 2 and the ejector fixing plate 3 are slidably installed between the mounting plate 1 and the upper mold plate 4 through the four mounting columns 6. The ejector plate 2 is positioned with the ejector fixing plate 3 through the copper sleeve 7 and is fixedly installed above the ejector fixing plate 3 by bolts. A core panel 5 is installed at the center of the ejector fixing plate 3. The ejector is divided into an inner ring lubricating ejector 8 and an outer ring lubricating ejector 9.

[0057] The inner ring lubrication groove 101 and the outer ring lubrication groove 102 are filled with high-temperature grease. Under the action of the high temperature of the external mold, the high-temperature grease will melt to form lubricating oil, which will flow into the pressure plate lubrication channel 103, the ejector rod lubrication groove 105, the ejector rod lubrication channel 106, and the ejector rod hole 104 in sequence. The area where the lubricating oil can flow is reduced in a step-by-step manner, thereby achieving a small amount of continuous self-lubrication of the inner ring lubrication ejector rod 8 and the outer ring lubrication ejector rod 9, reducing the friction during ejection and reset of the inner ring lubrication ejector rod 8 and the outer ring lubrication ejector rod 9, avoiding jamming, and facilitating automatic reset;

[0058] There is only a 1mm gap between the inner ring lubricating push rod 8, the outer ring lubricating push rod 9 and the corresponding push rod hole 104, which can be appropriately adjusted according to actual needs.

[0059] Example 2:

[0060] like Figure 1 、 Figure 2 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, it also includes a pressure plate guide column 111, which is fixedly connected to the upper end of the upper template 4; a return spring 112, one end of which is sleeved and pressed against the upper end of the pressure plate guide column 111, and the other end of which is sleeved and pressed against the lower end of the push rod fixing plate 3.

[0061] Furthermore, the return spring 112 is made of high temperature resistant material.

[0062] Furthermore, it also includes reset rods 113, which are fixedly connected to the four corners of the top rod fixing plate 3; reset holes 114, which are provided on the upper template 4 and coincide with the reset rods 113.

[0063] In this embodiment of the present application, due to the adoption of the above-mentioned structure, when the casting is filled, the external upper mold moves upward and takes out the casting, and the central ejection mechanism of the external casting machine pushes the ejector pressure plate 2 and the ejector fixing plate 3 downward to enable the ejector to eject the casting. After the ejection operation is completed, the central ejection mechanism of the external casting machine is reset. At this time, under the action of the reset spring 112, the ejector pressure plate 2 and the ejector fixing plate 3 will be reset to a certain extent, driving the ejector to reset in time, thereby preventing the ejector from getting stuck and causing bending or breaking.

[0064] The return spring 112 is made of alloy steel, which has high strength, high toughness, good heat treatment performance and good corrosion resistance. This allows the return spring 112 to maintain stable elasticity for a long time under the high temperature of the external mold, thereby extending the service life of the return spring 112 and reducing the replacement frequency of the return spring 112.

[0065] During the process of closing the external mold downward, reset columns are provided on the four corners of the external lower mold. The reset columns will pass through the reset holes 114 and abut against the reset rod 113. At this time, there will still be a distance between the ejector and the external lower mold. After the reset columns abut against the reset rod 113, the reset columns will push the ejector pressure plate 2 and the ejector fixing plate 3 to slide upward, which can ensure that the ejector is completely reset.

[0066] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0067] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A wheel hub mold that facilitates demoulding and ejector pin resetting, comprising a mounting plate (1), an ejector pin pressure plate (2), an ejector pin fixing plate (3), an upper mold plate (4), a core panel (5), a mounting column (6), and a copper sleeve (7), characterized in that: Also includes: A plurality of inner ring lubricating ejector pins (8) mounted on the core panel (5); A plurality of outer ring lubricating ejector rods (9) are mounted on the ejector rod fixing plate (3) and have the same structure as the inner ring lubricating ejector rods (8); A push rod lubrication structure (10) is used to reduce the friction between the inner ring lubricating push rod (8) and the outer ring lubricating push rod (9) during ejection and reset.

2. A wheel hub mold that facilitates demoulding ejector pin resetting according to claim 1, characterized in that: The ejector rod lubrication structure (10) comprises: An inner ring lubrication groove (101) is provided on the push rod pressure plate (2); An outer ring lubrication groove (102) is provided on the ejector plate (2); The inner ring lubricating push rod (8) is located directly below the inner ring lubricating groove (101), and the outer ring lubricating push rod (9) is located directly below the outer ring lubricating groove (102).

3. A wheel hub mold that facilitates demoulding ejector pin resetting according to claim 2, characterized in that: The ejector rod lubrication structure (10) further comprises: A plurality of pressure plate lubrication channels (103), which are arranged on the inner ring lubrication groove (101) and the outer ring lubrication groove (102) and pass through the push rod pressure plate (2); Wherein, the pressure plate lubrication channel (103) is provided above the inner ring lubrication push rod (8) and the outer ring lubrication push rod (9).

4. A wheel hub mold that facilitates demoulding ejector pin resetting according to claim 3, characterized in that: The ejector rod lubrication structure (10) further comprises: A push rod hole (104) is provided on the core panel (5) and the push rod fixing plate (3); A push rod lubrication groove (105) is provided at the top of the inner ring lubrication push rod (8) and the outer ring lubrication push rod (9); A plurality of ejector rod lubrication channels (106) are distributed in an evenly spaced circumferential array on the ejector rod lubrication groove (105) and connect the ejector rod lubrication groove (105) with the ejector rod hole (104); Wherein, the inner ring lubricating push rod (8) and the outer ring lubricating push rod (9) are both installed in the push rod hole (104).

5. A wheel hub mold that facilitates demoulding ejector pin resetting according to claim 4, characterized in that: The inner ring lubricating push rod (8) and the outer ring lubricating push rod (9) both leave a small gap with the push rod hole (104).

6. A wheel hub mold that facilitates demoulding ejector pin resetting according to claim 4, characterized in that: The inner ring lubrication groove (101) and the outer ring lubrication groove (102) are both filled with high-temperature lubricating grease, which melts under the high temperature of the external mold to form lubricating oil, and flows into the pressure plate lubrication channel (103), the ejector rod lubrication groove (105), the ejector rod lubrication channel (106), and the ejector rod hole (104) in sequence, and the area where the lubricating oil can flow into is stepped.

7. The wheel hub mold that facilitates demoulding ejector pin resetting according to claim 1, characterized in that: Also includes: A pressure plate guide post (111) fixedly connected to the upper end of the upper template (4); A return spring (112) has one end sleeved and pressed against the upper end of the pressure plate guide post (111), and the other end sleeved and pressed against the lower end of the push rod fixing plate (3).

8. A wheel hub mold that facilitates demoulding ejector pin resetting according to claim 7, characterized in that: The return spring (112) is made of high temperature resistant material.

9. The wheel hub mold that facilitates demoulding ejector pin resetting according to claim 1, characterized in that: Also includes: Reset rods (113) are respectively fixedly connected to the four corners of the top rod fixing plate (3); A reset hole (114) is provided on the upper template (4) and corresponds to and coincides with the reset rod (113).

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