Aluminum shell die-casting die with auxiliary ejection structure

Abstract

The aluminum shell die-casting die with the auxiliary ejection structure comprises a support, a die body is fixedly connected to the support, a containing groove is formed in the die body, a mold core shell is fixedly connected to the containing groove, four movable walls are connected into the mold core shell in a sliding mode, a connecting plate is connected into the containing groove in a sliding mode, and the movable walls are connected with the connecting plate in a sliding mode. Four inclined ejector rods are fixedly connected to the upper surface of the connecting plate; according to the utility model, part of the side wall of the mold core shell is designed into the movable wall, and the movable wall is synchronously controlled to move through the angle ejector rod, so that the movable wall and a casting are firstly separated when the casting is ejected out, the enclasping force is reduced, the ejector pin is assisted to eject the casting out, and the casting is prevented from being damaged; the guide surfaces of the guide rails are used for driving the rollers, so that the corresponding guide rods move to drive the ejection plate and the frame body, the ejection structure cancels the design of a rotating block, ejection of more stages can be realized, and the ejection speed of each stage and the final ejection position can be differentially designed.

Description

Technical Field

[0001] The utility model relates to the technical field of die-casting molds, and particularly relates to an aluminum shell die-casting mold with an auxiliary ejection structure. Background Technique

[0002] Die-casting is a common metal casting process. The die-casting molds required in this process have the following defects when in use: First, the forming part of the die-casting mold mainly includes the cavity formed after the fixed mold and the moving mold are closed, and the forming parts that make up this cavity, such as inserts and cores. These forming parts have a large contact area with the casting and there is a large clamping force, so the casting is prone to deformation during the ejection process by the ejector pins. Second, for large castings, die-casting molds generally adopt a multi-stage ejection design. The existing multi-stage ejection structure uses a single driving device to push the top plate, and the upper top plate is triggered to move upward through a rotating block, so that the multi-stage top plates act in sequence. The ejection speed of each stage of this ejection structure is the same and cannot be set differently according to needs. Since the number of ejection stages of the ejection structure is the same as the number of top plates, and the top plates need to be stacked layer by layer, the rotating blocks on the top plates need to bear the weight of the upper top plates. Therefore, the number of ejection stages is limited by the strength of the rotating blocks. Content of the Utility Model

[0003] The purpose of the utility model is to provide an aluminum shell die-casting mold with an auxiliary ejection structure to solve the problems raised in the above background technique.

[0004] To solve the above technical problems, the utility model provides the following technical solution: An aluminum shell die-casting mold with an auxiliary ejection structure, including a support, a mold body is fixedly connected to the support, a receiving groove is opened in the mold body, a core shell is fixedly connected to the receiving groove, four movable walls are slidably connected in the core shell, a connecting plate is slidably connected in the receiving groove, four inclined ejector rods are fixedly connected to the upper surface of the connecting plate, a first slider is slidably connected to the inclined ejector rods, and the four first sliders are respectively fixedly connected to the four movable walls.

[0005] Preferably, inclined holes are opened in the four first sliders, and the four inclined ejector rods are respectively slidably connected in the four inclined holes.

[0006] Preferably, a support plate is fixedly connected in the support, a top plate is arranged at the top end of the support plate, a connecting rod is fixedly connected to the upper surface of the top plate, and the connecting rod penetrates and slides on the mold body, and the connecting plate is fixedly connected to the top end of the connecting rod.

[0007] Preferably, a first frame is sleeved on the top plate, a second frame is sleeved on the first frame, ejector pins are fixedly connected to the upper surfaces of the first frame and the second frame, and the ejector pins penetrate and slide on the mold body.

[0008] Preferably, guide rods are fixedly connected to the lower surfaces of the top plate, the first frame body, and the second frame body, and the guide rods penetrate and slide on the support plate. A baffle is fixedly connected to the guide rods, a spring is sleeved on the guide rods, one end of the spring is arranged on the support plate, and the other end is arranged on the baffle. A roller is installed at the bottom end of the guide rod.

[0009] Preferably, a driving rod is installed on the support, the output end of the driving rod is fixedly connected to a bottom plate, and the bottom plate is slidably connected to the support. A first guide rail is fixedly connected to the bottom plate, and second guide rails are arranged on both sides of the first guide rail, and a third guide rail is arranged on one side of the second guide rail.

[0010] Preferably, a second slider is fixedly connected to the lower surface of the bottom plate, and a slide rail is slidably connected to the second slider, and the slide rail is fixedly connected to the support.

[0011] An aluminum shell die-casting mold with an auxiliary ejection structure provided by the present utility model has the following advantages: by designing part of the side wall of the core shell as a movable wall and synchronously controlling the movement of the movable wall through an inclined ejector rod, the movable wall and the casting are first separated when the casting is ejected, thereby reducing the holding force, assisting the ejector pin to eject the casting, and preventing the casting from being damaged; the present utility model drives the roller by the guiding surface of the guide rail, thereby moving the corresponding guide rod, and driving the top plate and the frame body. This ejection structure cancels the design of the rotating block, so more levels of ejection can be achieved, and the ejection speed and the final ejection position of each level can be designed differently. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0013] Figure 1 It is a schematic diagram of the overall three-dimensional sectional structure of the present utility model in the die-casting state;

[0014] Figure 2 is Figure 1 the enlarged structure view of area A in

[0015] Figure 3 It is a schematic three-dimensional structure view of the first guide rail of the present utility model;

[0016] Figure 4 It is a schematic diagram of the overall front sectional structure of the present utility model in the ejection state;

[0017] Figure 5 is Figure 4Enlarged view of the structure of area B in the middle.

[0018] In the figure: 1, support; 11, mold body; 12, receiving groove; 13, core shell; 14, movable wall; 2, support plate; 21, top plate; 22, first frame; 23, second frame; 24, ejector pin; 25, guide rod; 26, roller; 27, baffle; 28, spring; 29, first guide rail; 210, second guide rail; 211, third guide rail; 3, connecting rod; 31, connecting plate; 32, angled ejector rod; 33, first slider; 34, angled hole; 4, driving rod; 41, bottom plate; 42, second slider; 43, slide rail. Specific implementation manner

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to the attached Figure 1 - attached Figure 5, an embodiment provided by the present utility model: an aluminum shell die-casting mold with an auxiliary ejection structure, including a support 1, a mold body 11 is fixedly connected to the support 1, a receiving groove 12 is opened in the mold body 11, a core shell 13 is fixedly connected to the receiving groove 12, four movable walls 14 are slidably connected in the core shell 13, a connecting plate 31 is slidably connected in the receiving groove 12, four ejector pins 32 are fixedly connected to the upper surface of the connecting plate 31, a first slider 33 is slidably connected to the ejector pin 32, and the four first sliders 33 are respectively fixedly connected to the four movable walls 14. The receiving groove 12 is used to accommodate the connecting plate 31 and the ejector pins 32, the ejector pins 32 are used to drive the first sliders 33, the first sliders 33 are used to drive the movable walls 14, and the movable walls 14 are the four partial side walls of the core shell 13, so there will be no movement interference between the movable walls 14; inclined holes 34 are opened in all four first sliders 33, and the four ejector pins 32 are respectively slidably connected in the four inclined holes 34, and the inclined holes 34 are used to accommodate the ejector pins 32; a support plate 2 is fixedly connected in the support 1, a top plate 21 is arranged at the top end of the support plate 2, a connecting rod 3 is fixedly connected to the upper surface of the top plate 21, and the connecting rod 3 penetrates and slides on the mold body 11, and the connecting plate 31 is fixedly connected to the top end of the connecting rod 3. The top plate 21 is used to drive the connecting rod 3, and the connecting rod 3 is used to drive the connecting plate 31; a first frame 22 is sleeved on the top plate 21, a second frame 23 is sleeved on the first frame 22, ejector pins 24 are fixedly connected to the upper surfaces of the first frame 22 and the second frame 23, and the ejector pins 24 penetrate and slide on the mold body 11. The first frame 22 combined with the ejector pins 24 is a secondary ejection structure, and the second frame 23 combined with the ejector pins 24 is a primary ejection structure; guide rods 25 are fixedly connected to the lower surfaces of the top plate 21, the first frame 22 and the second frame 23, and the guide rods 25 penetrate and slide on the support plate 2. A baffle 27 is fixedly connected to the guide rods 25, a spring 28 is sleeved on the guide rods 25, one end of the spring 28 is arranged on the support plate 2, and the other end is arranged on the baffle 27. A roller 26 is installed at the bottom end of the guide rod 25. The guide rods 25 are respectively used to drive the top plate 21, the first frame 22 and the second frame 23. The spring 28 combined with the baffle 27 resets the guide rod 25, and the roller 26 is used to realize the rolling connection between the guide rod 25 and the guide surface; a driving rod 4 is installed on the support 1, a bottom plate 41 is fixedly connected to the output end of the driving rod 4, and the bottom plate 41 is slidably connected to the support 1. A first guide rail 29 is fixedly connected to the bottom plate 41, second guide rails 210 are arranged on both sides of the first guide rail 29, and a third guide rail 211 is arranged on one side of the second guide rail 210. The driving rod 4 is used to drive the bottom plate 41, the bottom plate 41 is used to install the first guide rail 29, the second guide rails 210 and the third guide rail 211, and the first guide rail 29, the second guide rails 210 and the third guide rail 211 use the guide surface to guide the rollers 26 thereon, so as to push the corresponding guide rods 25;A second slider 42 is fixedly connected to the lower surface of the bottom plate 41. A slide rail 43 is slidably connected to the second slider 42, and the slide rail 43 is fixedly connected to the support 1. The combination of the second slider 42 and the slide rail 43 realizes the sliding connection between the bottom plate 41 and the support 1.;

[0021] Working principle: When using the present utility model to eject a casting, the bottom plate 41 is driven by the driving rod 4. The bottom plate 41 moves along the slide rail 43 through the second slider 42. The first guide rail 29, the second guide rail 210, and the third guide rail 211 on the bottom plate 41 move accordingly. The first guide rail 29, the second guide rail 210, and the third guide rail 211 push the roller 26 through the guiding surfaces thereon, and the guiding rod 25 on the roller 26 moves accordingly. Under the reset action of the spring 28 on the baffle 27, the roller 26 always fits the guiding surface. During the movement of the bottom plate 41, the guiding rod 25 on the top plate 21 first moves upward, so that the top plate 21 drives the connecting plate 31 to move upward along the receiving groove 12 through the connecting rod 3. The connecting plate 31 drives the inclined ejector rod 32 to move upward. The inclined ejector rod 32 drives the first slider 33 through the inclined hole 34, so that the four first sliders 33 move towards the center of the core housing 13. The movable wall 14 on the first slider 33 moves accordingly, thereby separating a part of the side wall of the core housing 13 from the casting, reducing the holding force. As the roller 26 corresponding to the top plate 21 enters the horizontal guiding surface, the movable wall 14 stops moving; then the guiding rods 25 on the first frame 22 and the second frame 23 move upward simultaneously, so that the ejector pins 24 on the first frame 22 and the second frame 23 are pushed upward simultaneously to eject the casting. As the roller 26 corresponding to the second frame 23 enters the horizontal guiding surface, the ejector pin 24 on the second frame 23 stops moving, and the first frame 22 continues to move upward, and the ejector pin 24 thereon performs a secondary ejection. As the roller 26 corresponding to the first frame 22 enters the horizontal guiding surface, the ejector pin 24 on the first frame 22 stops moving, completing the ejection of the casting; when the driving rod 4 resets, under the action of its own weight and the elastic force of the spring 28, the top plate 21, the first frame 22, and the second frame 23 automatically reset, and the movable wall 14 and the ejector pin 24 also reset accordingly; among them, the guiding surfaces of the first guide rail 29, the second guide rail 210, and the third guide rail 211 can be designed with inclination angles and lengths according to needs, so as to control the moving speed and the final height of the corresponding guiding rod 25; the support 1 is used to carry the mold body 11, and the support plate 2 is used to support the top plate 21, the first frame 22, and the second frame 23.

[0022] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative efforts.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or equivalently replace some of the technical features. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An aluminum shell die-casting mold with an auxiliary ejection structure, comprising a support (1), characterized in that: A mold body (11) is fixedly connected to the support (1). A receiving groove (12) is formed in the mold body (11). A core shell (13) is fixedly connected to the receiving groove (12). Four movable walls (14) are slidably connected in the core shell (13). A connecting plate (31) is slidably connected in the receiving groove (12). Four inclined ejector rods (32) are fixedly connected to the upper surface of the connecting plate (31). A first slider (33) is slidably connected to the inclined ejector rod (32), and the four first sliders (33) are respectively fixedly connected to the four movable walls (14).

2. The aluminum shell die-casting mold with an auxiliary ejection structure according to claim 1, characterized in that: Oblique holes (34) are formed in the four first sliders (33), and the four inclined ejector rods (32) are respectively slidably connected in the four oblique holes (34).

3. The aluminum shell die-casting mold with an auxiliary ejection structure according to claim 1, characterized in that: A support plate (2) is fixedly connected in the support (1). A top plate (21) is arranged at the top end of the support plate (2). A connecting rod (3) is fixedly connected to the upper surface of the top plate (21), and the connecting rod (3) penetrates and slides on the mold body (11). The connecting plate (31) is fixedly connected to the top end of the connecting rod (3).

4. The aluminum shell die-casting mold with an auxiliary ejection structure according to claim 3, characterized in that: A first frame body (22) is sleeved on the top plate (21). A second frame body (23) is sleeved on the first frame body (22). Thimble pins (24) are fixedly connected to the upper surfaces of the first frame body (22) and the second frame body (23), and the thimble pins (24) penetrate and slide on the mold body (11).

5. A die-casting mold for aluminum shells with an auxiliary ejection structure according to claim 4, characterized in that: Guide rods (25) are fixedly connected to the lower surfaces of the top plate (21), the first frame body (22) and the second frame body (23), and the guide rods (25) penetrate and slide on the support plate (2). A baffle (27) is fixedly connected to the guide rod (25). A spring (28) is sleeved on the guide rod (25), and one end of the spring (28) is arranged on the support plate (2), and the other end is arranged on the baffle (27). A roller (26) is installed at the bottom end of the guide rod (25).

6. The aluminum shell die-casting mold with an auxiliary ejection structure according to claim 3, characterized in that: A driving rod (4) is installed on the support (1). The output end of the driving rod (4) is fixedly connected to a bottom plate (41), and the bottom plate (41) is slidably connected to the support (1). A first guide rail (29) is fixedly connected to the bottom plate (41). Second guide rails (210) are arranged on both sides of the first guide rail (29). A third guide rail (211) is arranged on one side of the second guide rail (210).

7. An aluminum shell die-casting mold with an auxiliary ejection structure according to claim 6, characterized in that: A second slider (42) is fixedly connected to the lower surface of the bottom plate (41). A slide rail (43) is slidably connected to the second slider (42), and the slide rail (43) is fixedly connected to the support (1).

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