Inner core-pulling die-casting die for automobile crankcase shell

Abstract

The utility model discloses an inner core-pulling die-casting mould of an automobile crankcase shell, which relates to the field of die-casting processing and comprises a base, a fixed mould is fixed on the base, a movable mould matched with the fixed mould is movably arranged on the base, and a moving mechanism is arranged on the base and used for moving the movable mould. An inner core-pulling mold is arranged in the fixed mold, and a drawing assembly is arranged on the fixed mold and used for moving the inner core-pulling mold; the drawing assembly comprises an inclined push plate arranged at the movable end of the moving mechanism, an arc-shaped block arranged outside the inner core-pulling mold and a spring used for pushing the arc-shaped block. The mold has the beneficial effects that opening and closing of the fixed mold and the movable mold can be linked with movement of the inner core-pulling mold through cooperation of the moving mechanism and the pulling assembly, meanwhile, the linkage is not rigid linkage, and when the movable mold moves, if the inner core-pulling mold is blocked, the inner core-pulling mold stops and cannot be forcibly pulled out of the fixed mold by external force; therefore, the blank and the inner core-pulling mold can be prevented from being damaged.

Description

Technical Field

[0001] This utility model relates to the field of die casting technology, specifically to an inner core-pulling die casting mold for an automobile crankcase housing. Background Technology

[0002] Internal core-pulling die-casting molds are mainly used for processing irregularly shaped parts. Existing internal core-pulling molds generally adopt a rigid linkage design, that is, when the moving mold and the fixed mold separate, the internal core can be driven simultaneously, so that the internal core can be detached from the mold. When the moving mold and the fixed mold close, the internal core can be driven into the mold. Rigid linkage means that the moving mold is connected to the internal core through a drive linkage, so the moving mold and the internal core move simultaneously. However, for casting production, there is a situation where the internal core is stuck in the mold after the part is cast. If the internal core is forcibly separated from the fixed mold along with the moving mold, the blank or internal core in the mold is easily damaged. Utility Model Content

[0003] The purpose of this utility model is to provide an inner core-pulling die-casting mold for an automobile crankcase housing in order to solve the above-mentioned problems, as detailed below.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] This utility model provides an inner core-pulling die-casting mold for an automobile crankcase housing, including a base, a fixed mold fixed on the base, a movable mold matching the fixed mold movably disposed on the base, and a moving mechanism disposed on the base for moving the movable mold;

[0006] An inner core-pulling mold is provided inside the fixed mold, and a pull-out assembly is provided on the fixed mold for moving the inner core-pulling mold.

[0007] The pull-out assembly includes an inclined push plate disposed at the movable end of the moving mechanism, an arc-shaped block disposed outside the inner core-pulling mold, and a spring for pushing the arc-shaped block.

[0008] The arc-shaped block contacts the inclined push plate. As the inclined push plate moves away from the fixed mold along with the moving mechanism, its surface gradually moves away from the arc-shaped block. The spring pushes the arc-shaped block and the inner core-pulling mold, causing the inner core-pulling mold to detach from the fixed mold.

[0009] The aforementioned inner core-pulling die-casting mold for an automotive crankcase housing utilizes a moving mechanism to move the moving mold away from the fixed mold, thus achieving mold opening. As the moving mechanism moves the moving mold away from the fixed mold, the inclined push plate follows the hydraulic cylinder away from the fixed mold. Since the side of the inclined push plate corresponding to the arc block is inclined, the distance between the inclined push plate and the arc block gradually increases as the inclined push plate moves away from the fixed mold. At that time, the arc block loses the obstruction of the inclined push plate and is pushed by the spring, causing the inner core-pulling mold to detach from the fixed mold. Through this design, the demolding of the fixed mold and the moving mold, as well as the demolding of the inner core-pulling mold, are linked. Moreover, this linkage is not rigid; if the inner core-pulling mold gets stuck when the moving mold moves, it will stop and will not be forcibly pulled out of the fixed mold by external force.

[0010] After the fixed mold and the moving mold separate, and the inner core-pulling mold separates from the inside of the fixed mold, the die-casting part can be removed.

[0011] When the moving mechanism moves the moving mold closer to the fixed mold, the inclined push plate gradually approaches the arc plate. The inclined push plate can gradually push the arc plate, allowing the inner core-pulling mold to enter the fixed mold. At the same time as the fixed mold and the moving mold close, the inner core-pulling mold will also enter the designated position inside the fixed mold.

[0012] Preferably, the base is fixed to the mold by two reinforcing columns.

[0013] Preferably, the base is provided with a protective component to shield the docking point between the fixed mold and the moving mold.

[0014] Preferably, the protective assembly includes an electric push rod and a protective cover. The electric push rod is vertically mounted on the base, and the protective cover is fixed to the movable end of the electric push rod. The protective cover is matched with the docking points of the fixed mold and the moving mold.

[0015] Preferably, the moving mechanism includes a fixed frame, with sliding sleeves fixed on both sides of the moving mold, and guide rods slidably arranged inside the sliding sleeves, with both ends of the guide rods fixed by fixed frames. At least two hydraulic cylinders are horizontally arranged on the fixed frame, with the two hydraulic cylinders distributed on both sides of the moving mold, and the movable ends of the hydraulic cylinders fixed to the moving mold.

[0016] Preferably, the pull-out assembly includes a fixed rod, which is fixed to a fixed mold. A connecting plate is slidably disposed on the surface of the fixed rod, and an arc-shaped plate is fixed on the connecting plate. The inclined push plate is fixed to the movable end of one of the hydraulic cylinders.

[0017] Preferably, the fixing rod is rectangular, the spring is sleeved on the surface of the fixing rod, and the two ends of the fixing rod are fixed to the connecting plate and the surface of the fixed mold, respectively.

[0018] Preferably, a reinforcing rod is fixed between the movable end of the hydraulic cylinder and the inclined push plate to support the inclined push plate.

[0019] The beneficial effects are:

[0020] 1. By cooperating with the moving mechanism and the pull-out assembly, the opening and closing of the fixed mold and the moving mold can be linked with the movement of the inner core-pulling mold. However, this linkage is not rigid. When the moving mold moves, if the inner core-pulling mold gets stuck, it will stop and will not be forcibly pulled out of the fixed mold by external force. This can avoid damage to the blank and the inner core-pulling mold.

[0021] 2. The installation of protective components can prevent the molten material from splashing out from the gap between the moving mold and the fixed mold during die casting, thereby improving the safety of the mold. Attached Figure Description

[0022] 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, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a front view structural diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the right-side structure of this utility model;

[0025] Figure 3 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 4 This is a utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0027] The annotations in the attached figures are explained as follows:

[0028] 1. Base; 2. Fixed mold; 3. Moving mold; 4. Moving mechanism; 5. Protective component; 6. Electric push rod; 7. Protective cover; 8. Reinforcing column; 9. Fixing frame; 10. Guide rod; 11. Hydraulic cylinder; 12. Sliding sleeve; 13. Pull-out component; 14. Reinforcing rod; 15. Inclined push plate; 16. Inner core-pulling mold; 17. Arc block; 18. Connecting plate; 19. Fixing rod; 20. Spring. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] See Figures 1-4 As shown, this utility model provides an inner core-pulling die-casting mold for an automobile crankcase housing, including a base 1, a fixed mold 2 fixed on the base 1, a movable mold 3 matched with the fixed mold 2 movably arranged on the base 1, and a moving mechanism 4 provided on the base 1 for moving the movable mold 3.

[0031] An inner core-pulling mold 16 is provided inside the fixed mold 2, and a pull-out assembly 13 is provided on the fixed mold 2 for moving the inner core-pulling mold 16.

[0032] The pull-out assembly 13 includes a slanted push plate 15 disposed at the movable end of the moving mechanism 4, an arc-shaped block 17 disposed outside the inner core-pulling mold 16, and a spring 20 for pushing the arc-shaped block 17.

[0033] When the arc-shaped block 17 contacts the inclined push plate 15, and the inclined push plate 15 moves away from the fixed mold 2 along with the moving mechanism 4, its surface gradually moves away from the arc-shaped block 17. The spring 20 pushes the arc-shaped block 17 and the inner core-pulling mold 16, causing the inner core-pulling mold 16 to separate from the fixed mold 2.

[0034] The moving mechanism 4 works in conjunction with the pull-out assembly 13 to enable the opening and closing of the fixed mold 2 and the moving mold 3 to be linked with the movement of the inner core-pulling mold 16. However, this linkage is not rigid. If the inner core-pulling mold 16 gets stuck when the moving mold 3 moves, it will stop and will not be forcibly pulled out of the fixed mold 2 by external force. Under normal circumstances, the force of the spring 20 can push the inner core-pulling mold 16 out. However, when the inner core-pulling mold 16 is stuck, the force of the spring 20 cannot push the inner core-pulling mold 16. At that time, it can be checked manually and the blank in the fixed mold 2 can be removed manually. If necessary, the inner core-pulling mold 16 can be preserved by splitting the blank.

[0035] As an optional implementation, the base 1 is fixed to the fixed mold 2 by two reinforcing columns 8, which can improve the stability of the fixed mold 2.

[0036] The base 1 is equipped with a protective component 5, which is used to shield the docking point between the fixed mold 2 and the moving mold 3.

[0037] The protective component 5 includes an electric push rod 6 and a protective cover 7. The electric push rod 6 is vertically mounted on the base 1, and the protective cover 7 is fixed to the movable end of the electric push rod 6. The protective cover 7 is matched with the docking point of the fixed mold 2 and the moving mold 3.

[0038] The protective cover 7 can prevent the material solution from splashing out from the gap between the moving mold 3 and the fixed mold 2 during die casting. When the mold is opened, the protective cover 7 is raised by the electric push rod 6, at which time the protective cover 7 will no longer interfere with the mold opening.

[0039] The moving mechanism 4 includes a fixed frame 9, and sliding sleeves 12 are fixed on both sides of the moving mold 3. A guide rod 10 is slidably arranged inside the sliding sleeve 12, and both ends of the guide rod 10 are fixed by the fixed frame 9. At least two hydraulic cylinders 11 are horizontally arranged on the fixed frame 9. The two hydraulic cylinders 11 are distributed on both sides of the moving mold 3, and the movable end of the hydraulic cylinder 11 is fixed to the moving mold 3.

[0040] The moving mold 3 is moved by the hydraulic cylinder 11, and the stability of the moving mold 3 can be improved by the cooperation of the guide rod 10 and the sliding sleeve 12.

[0041] The pull-out assembly 13 includes a fixed rod 19, which is fixed on the fixed mold 2. A connecting plate 18 is slidably disposed on the surface of the fixed rod 19. An arc plate 17 is fixed on the connecting plate 18. An inclined push plate 15 is fixed to the movable end of one of the hydraulic cylinders 11.

[0042] When the moving mechanism 4 moves the moving mold 3 away from the fixed mold 2, the inclined push plate 15 moves away from the fixed mold 2 along with the hydraulic cylinder 11. Since the side of the inclined push plate 15 corresponding to the arc block 17 is inclined, as the inclined push plate 15 moves away from the fixed mold 2, the distance between the inclined push plate 15 and the arc block 17 will gradually increase. At that time, the arc block 17 will lose the obstruction of the inclined push plate 15 and will be pushed by the spring 20, which will drive the inner core pulling mold 16 to separate from the fixed mold 2.

[0043] The fixing rod 19 is rectangular, and the spring 20 is sleeved on the surface of the fixing rod 19. The two ends of the fixing rod 19 are fixed to the surface of the connecting plate 18 and the fixed mold 2, respectively. The fixing rod 19 is guided by the spring 20 and the connecting plate 18.

[0044] A reinforcing rod 14 is fixed between the movable end of the hydraulic cylinder 11 and the inclined push plate 15 to support the inclined push plate 15. The reinforcing rod 14 can improve the stability of the inclined push plate 15.

[0045] Using the above structure, the moving mold 3 is moved away from the fixed mold 2 by the moving mechanism 4, thus realizing mold opening. When the moving mechanism 4 moves the moving mold 3 away from the fixed mold 2, the inclined push plate 15 moves away from the fixed mold 2 along with the hydraulic cylinder 11. Since the side of the inclined push plate 15 corresponding to the arc block 17 is inclined, the distance between the inclined push plate 15 and the arc block 17 will gradually increase as the inclined push plate 15 moves away from the fixed mold 2. At that time, the arc block 17 will lose the obstruction of the inclined push plate 15 and will be pushed by the spring 20, which will drive the inner core pulling mold 16 to disengage from the fixed mold 2. Through this design, the demolding of the fixed mold 2 and the moving mold 3 and the demolding of the inner core pulling mold 16 are realized. Moreover, this linkage is not a rigid linkage. When the moving mold 3 moves, if the inner core pulling mold 16 gets stuck, it will stop and will not be forcibly pulled out from the fixed mold 2 by external force.

[0046] After the fixed mold 2 separates from the moving mold 3, the inner core-pulling mold 16 disengages from the interior of the fixed mold 2, allowing the die-casting part to be removed.

[0047] When the moving mold 3 is driven close to the fixed mold 2 by the moving mechanism 4, the inclined push plate 15 gradually approaches the arc plate 17. The inclined push plate 15 can gradually push the arc plate 17, so that the inner core pulling mold 16 enters the fixed mold 2. At the same time as the fixed mold 2 and the moving mold 3 are closed, the inner core pulling mold 16 will also enter the designated position inside the fixed mold 2.

[0048] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An inner core-pulling die-casting mold for an automobile crankcase housing, characterized in that: Includes a base (1), on which a fixed mold (2) is fixed, and on which a movable mold (3) matching the fixed mold (2) is movably arranged, and on which a moving mechanism (4) is provided for moving the movable mold (3); The fixed mold (2) is provided with an inner core-pulling mold (16), and the fixed mold (2) is provided with a pull-out assembly (13) for moving the inner core-pulling mold (16); The pull-out assembly (13) includes a slanted push plate (15) disposed at the movable end of the moving mechanism (4), an arc-shaped block (17) disposed outside the inner core-pulling mold (16), and a spring (20) for pushing the arc-shaped block (17); The arc-shaped block (17) contacts the inclined push plate (15). When the inclined push plate (15) moves away from the fixed mold (2) along with the moving mechanism (4), its surface gradually moves away from the arc-shaped block (17). The spring (20) pushes the arc-shaped block (17) and the inner core-pulling mold (16) to separate the inner core-pulling mold (16) from the fixed mold (2).

2. The inner core-pulling die-casting mold for an automobile crankcase housing according to claim 1, characterized in that: The base (1) is fixed to the mold (2) by two reinforcing columns (8).

3. The inner core-pulling die-casting mold for an automobile crankcase housing according to claim 1, characterized in that: The base (1) is provided with a protective component (5) to shield the docking point between the fixed mold (2) and the moving mold (3).

4. The inner core-pulling die-casting mold for an automobile crankcase housing according to claim 3, characterized in that: The protective component (5) includes an electric push rod (6) and a protective cover (7). The electric push rod (6) is vertically mounted on the base (1), and the protective cover (7) is fixed to the movable end of the electric push rod (6). The protective cover (7) is matched with the docking point of the fixed mold (2) and the moving mold (3).

5. The inner core-pulling die-casting mold for an automobile crankcase housing according to claim 1, characterized in that: The moving mechanism (4) includes a fixed frame (9), and sliding sleeves (12) are fixed on both sides of the moving mold (3). A guide rod (10) is slidably arranged inside the sliding sleeve (12), and both ends of the guide rod (10) are fixed by the fixed frame (9). At least two hydraulic cylinders (11) are horizontally arranged on the fixed frame (9). The two hydraulic cylinders (11) are distributed on both sides of the moving mold (3), and the movable end of the hydraulic cylinder (11) is fixed to the moving mold (3).

6. The inner core-pulling die-casting mold for an automobile crankcase housing according to claim 5, characterized in that: The pull-out assembly (13) includes a fixed rod (19), which is fixed on a fixed mold (2). A connecting plate (18) is slidably disposed on the surface of the fixed rod (19). An arc plate (17) is fixed on the connecting plate (18). The inclined push plate (15) is fixed to the movable end of one of the hydraulic cylinders (11).

7. The inner core-pulling die-casting mold for an automobile crankcase housing according to claim 6, characterized in that: The fixing rod (19) is rectangular, the spring (20) is sleeved on the surface of the fixing rod (19), and the two ends of the fixing rod (19) are fixed to the surfaces of the connecting plate (18) and the fixed mold (2) respectively.

8. The inner core-pulling die-casting mold for an automobile crankcase housing according to claim 7, characterized in that: A reinforcing rod (14) is fixed between the movable end of the hydraulic cylinder (11) and the inclined push plate (15) to support the inclined push plate (15).

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