Secondary core pulling device for aluminum alloy wheel casting mold

Abstract

The utility model discloses a secondary core-pulling device for an aluminum alloy wheel casting mold, which comprises an upper mold A, a connecting column is mounted at the upper end of the upper mold A, a stripper plate is mounted at the upper end of the connecting column, and a cavity enclosed by the upper mold A, an upper mold B, a pulling core B, a pulling core A and a side mold forms a casting. A side mold is arranged at the right end of the lower mold, a loose core A is connected with an upper mold A through a rotating shaft A and can freely rotate around the rotating shaft A, a loose core B is connected with a loose core support through a rotating shaft B and a loose core connecting rod, loose core demolding is achieved, the loose core A and the loose core B have the floating function with the help of the loose core support, mutual interference between loose cores is avoided, most materials are removed through the loose cores, and the production efficiency is improved. According to the invention, through secondary action of the core pulling mechanism, comprehensive core pulling in the circumferential direction is realized, the machining cost is obviously reduced, the metal utilization rate is further improved, and the casting qualification rate is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to secondary core pulling device for aluminium alloy wheel casting mould related technical field, specifically related to a secondary core pulling device for aluminium alloy wheel casting mould. BACKGROUND

[0002] Secondary core pulling device is a kind of key equipment in aluminium alloy wheel casting mould, mainly used to realize the effective demoulding of complex shape casting in the casting process, since the internal structure of aluminium alloy wheel is complex, primary core pulling can not remove casting completely, when secondary core pulling device passes through additional core pulling step, ensure that casting is complete and has no defect, the device adopts multiple movable modules, can work in different stages in coordination, efficiently solve the difficulties faced in the demoulding process of traditional mould, to improve production efficiency and reduce scrap rate, ensure the casting quality of aluminium alloy wheel.

[0003] With the rise of the trend of automobile light weight, aluminium alloy wheel designs weight reduction groove structure in the intersection area of spoke and rim to reduce the total weight of wheel, currently, most wheel manufacturing enterprises adopt the method of removing the excess material in the part by mechanical processing means after casting forming, which not only increases the weight of casting, wastes material, but also improves the cost of mechanical processing. UTILITARY MODEL CONTENTS

[0004] The utility model aims at providing a secondary core pulling device for aluminium alloy wheel casting mould to solve the problem that with the rise of the trend of automobile light weight, aluminium alloy wheel designs weight reduction groove structure in the intersection area of spoke and rim to reduce the total weight of wheel, currently, most wheel manufacturing enterprises adopt the method of removing the excess material in the part by mechanical processing means after casting forming, which not only increases the weight of casting, wastes material, but also improves the cost of mechanical processing.

[0005] To realize the above-mentioned purpose, the utility model provides the following technical scheme: a secondary core pulling device for aluminium alloy wheel casting mould, including upper die A, the upper end position of upper die A is installed with connecting column, the upper end position of connecting column is installed with material return plate, the lower end position of material return plate is installed with core pulling support, the inner side position of core pulling support is installed with rotating shaft A, rotating shaft B, core pulling B and core pulling A, the inner side position of core pulling support is provided with core pulling connecting rod, the upper end position of upper die A is provided with upper die B, the lower end position of upper die A is provided with lower die, the cavity formed by the surrounding combination of upper die A, upper die B, core pulling B and core pulling A and side die forms casting, the right end position of lower die is provided with side die.

[0006] Preferably, the lower mold, the upper mold A, the upper mold B, the core pulling A, the core pulling B, the pivot A, the pivot B, the core pulling connecting rod, the core pulling support and the material removing plate constitute a mold core pulling mechanism.

[0007] Preferably, the upper mold A and the upper mold B closely fit to form a cavity of the casting.

[0008] Preferably, the core pulling A is connected with the upper mold A through the pivot A, and the core pulling B is connected with the core pulling connecting rod through the pivot B.

[0009] Preferably, the upper mold A is connected with the core pulling support through the connecting column, and the material removing plate drives the connecting column and the upper mold A to move up and down.

[0010] Preferably, the upper mold A moves downward to push the casting to separate from the upper mold B.

[0011] Preferably, when the casting starts to move downward, the core pulling A is pressed to rotate inward to realize core pulling demolding, and the core pulling B moves vertically along with the casting.

[0012] Preferably, the core pulling B is driven by the casting to move downward, the core pulling connecting rod and the core pulling support are driven by the core pulling B to move vertically downward, and after the core pulling support hits the upper end surface of the upper mold B, the core pulling B starts to rotate inward around the pivot B to complete the core pulling action.

[0013] Compared with the prior art, the twice core pulling device for the aluminum alloy wheel casting mold has the following beneficial effects:

[0014] The mold core pulling mechanism is composed of a lower mold, an upper mold A, an upper mold B, a core pulling A, a core pulling B, a pivot A, a pivot B, a core pulling connecting rod, a core pulling support and a material removing plate. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structure schematic view of the twice core pulling device for the aluminum alloy wheel casting mold.

[0016] Figure 2 A second action sequence structure schematic diagram of the secondary core pulling device for the aluminum alloy wheel casting mold.

[0017] Figure 3 A second action sequence structure schematic diagram of the secondary core pulling device for the aluminum alloy wheel casting mold.

[0018] Figure 4 A second action sequence structure schematic diagram of the secondary core pulling device for the aluminum alloy wheel casting mold.

[0019] Figure 5 A second action sequence structure schematic diagram of the secondary core pulling device for the aluminum alloy wheel casting mold.

[0020] In the figure: 1, upper die A; 2, connecting column; 3, core pulling connecting rod; 4, material returning plate; 5, core pulling support; 6, upper die B; 7, casting; 8, core pulling A; 9, core pulling B; 10, side die; 11, lower die; 12, rotating shaft A; 13, rotating shaft B. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the utility model, it is necessary to explain that, unless there are explicit provisions and limitations, the terms "installation", "setting", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through intermediate media, can be the communication inside two elements, for the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances

[0024] The utility model provides a kind of secondary core-pulling device for aluminum alloy wheel casting mould as Figures 1-5 As shown in a kind of secondary core-pulling device for aluminum alloy wheel casting mould, including upper die A1, the upper end position of upper die A1 is installed with connecting column 2, the upper end position of connecting column 2 is installed with material withdrawal plate 4, the lower end position of material withdrawal plate 4 is installed with core-pulling support 5, the inner side position of core-pulling support 5 is installed with rotating shaft A12, rotating shaft B13, core-pulling B9 and core-pulling A8, the inner side position of core-pulling support 5 is provided with core-pulling connecting rod 3, the upper end position of upper die A1 is provided with upper die B6, the lower end position of upper die A1 is provided with lower die 11, the cavity formed by the combination of upper die A1, upper die B6, core-pulling B9 and core-pulling A8 and side die 10 forms casting 7, the right end position of lower die 11 is provided with side die 10.

[0025] opening side die 10, upper die A1 and upper die B6 and core-pulling drive casting 7 upward movement, material withdrawal plate 4 downward movement drives connecting rod and upper die A1 to push casting 7 and leave upper die B6, while casting 7 drives core-pulling B9 vertically downward movement, at the same time, casting 7 pushes core-pulling A8 and rotates to the center around rotating shaft A12, realizes that core-pulling A8 is from casting 7 and is out, material withdrawal plate 4 continues to move downward, until core-pulling support 5 is pressed to upper die B6, core-pulling B9 begins to rotate around rotating shaft B13, at this time, core-pulling A8 and core-pulling B9 rotate simultaneously and do not interfere with each other, material withdrawal plate 4 continues to move downward, core-pulling A8 rotates first and separates from casting 7, core-pulling B9 continues to rotate around rotating shaft B13 until casting 7 is separated, and secondary core-pulling is completed.

[0026] As Figure 1As shown, the lower die 11, the upper die A1, the upper die B6, the core pulling A8, the core pulling B9, the rotating shaft A12, the rotating shaft B13, the core pulling link 3, the core pulling support 5 and the material return plate 4 constitute a mold core pulling mechanism, the upper die A1 and the upper die B6 are tightly fitted to form a cavity of the casting 7, the core pulling A8 is connected with the upper die A1 through the rotating shaft A12, the core pulling B9 is connected with the core pulling link 3 through the rotating shaft B13, the upper die A1 is connected with the core pulling support 5 through the connecting column 2, the material return plate 4 drives the connecting column 2 and the upper die A1 to move up and down, the upper die A1 moves downward to push the casting 7 to separate from the upper die B6, the core pulling A8 is pressed to rotate inward to realize core pulling demolding when the casting 7 starts to move downward, the core pulling B9 moves vertically along with the casting 7, the casting 7 continues to move downward to drive the core pulling B9, the core pulling B9 drives the core pulling link 3 and the core pulling support 5 to move vertically downward, and after the core pulling support 5 hits the upper end surface position of the upper die B6, the core pulling B9 starts to rotate inward around the rotating shaft B13 to complete the core pulling action.

[0027] After the secondary core pulling is completed, the mold is gradually opened, the fixation of the upper die A1, the upper die B6 and the side die 10 is released first to ensure that the casting 7 can be smoothly demolded, at this time, the material return plate 4 is also ready, after the casting 7 is pushed out, finally, the material return plate 4 pushes the casting 7 to the outside to complete the demolding process, and the casting 7 is smoothly taken out, at this time, subsequent inspection and processing are prepared.

[0028] Finally, it should be noted that the above only describes preferred embodiments of the present application and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement for some technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A secondary core-pulling device for aluminum alloy wheel casting molds, characterized in that, The upper mold A (1) is provided with a connecting column (2) at the upper end of the upper mold A (1), a stripper plate (4) at the upper end of the connecting column (2), a core-pulling support (5) at the lower end of the stripper plate (4), a rotating shaft A (12), a rotating shaft B (13), a core-pulling B (9) and a core-pulling A (8) at the inner side of the core-pulling support (5), a core-pulling connecting rod (3) at the inner side of the core-pulling support (5), an upper mold B (6) at the upper end of the upper mold A (1), a lower mold (11) at the lower end of the upper mold A (1), and a cavity formed by the upper mold A (1), upper mold B (6), core-pulling B (9) and core-pulling A (8) and the side mold (10) to form a casting (7), and a side mold (10) at the right end of the lower mold (11).

2. The secondary core-pulling device according to claim 1 for use in aluminum alloy wheel casting molds, characterized in that: The lower mold (11), upper mold A (1), upper mold B (6), core puller A (8), core puller B (9), rotating shaft A (12), rotating shaft B (13), core puller connecting rod (3), core puller support (5) and ejector plate (4) constitute the mold core pulling mechanism.

3. The secondary core-pulling device according to claim 1 for use in aluminum alloy wheel casting molds, characterized in that: The close fit between the upper mold A (1) and the upper mold B (6) forms the cavity of the casting (7).

4. The secondary core-pulling device according to claim 1 for use in aluminum alloy wheel casting molds, characterized in that: The core-pulling A (8) is connected to the upper mold A (1) via the rotating shaft A (12), and the core-pulling B (9) is connected to the core-pulling connecting rod (3) via the rotating shaft B (13).

5. A secondary core-pulling device according to claim 1 for use in aluminum alloy wheel casting molds, characterized in that: The upper mold A (1) is connected to the core-pulling support (5) through the connecting column (2), and the ejector plate (4) drives the connecting column (2) and the upper mold A (1) to move up and down.

6. A secondary core-pulling device according to claim 1 for use in aluminum alloy wheel casting molds, characterized in that: When the upper mold A (1) moves downward, it pushes the casting (7) to disengage from the upper mold B (6).

7. A secondary core-pulling device according to claim 1 for use in aluminum alloy wheel casting molds, characterized in that: When the casting (7) begins to move downwards, it presses the core puller A (8) to rotate inwards to achieve core pulling and demolding. The core puller B (9) moves vertically downwards along with the casting (7).

8. A secondary core-pulling device according to claim 1 for use in aluminum alloy wheel casting molds, characterized in that: The casting (7) continues to move downward, driving the core puller B (9). The core puller B (9) drives the core puller connecting rod (3) and the core puller support (5) to move vertically downward until the core puller support (5) hits the upper end face of the upper mold B (6). Then the core puller B (9) begins to rotate inward around the rotating shaft B (13) to complete the core pulling action.

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