Anti-expansion insert structure and aluminum alloy high-pressure casting mold

Abstract

This disclosure provides an anti-expansion insert structure and an aluminum alloy high-pressure casting mold. The anti-expansion insert structure includes a mold core insert, an insert, and a locking element. The mold core insert is further provided with a horizontal limiting groove, a liquid outlet, and a first screw hole. The insert has a horizontal limiting protrusion that abuts against the inner wall of the horizontal limiting groove to restrict the horizontal movement of the insert. In addition to being fixed by the locking element to restrict the vertical movement of the insert, the horizontal limiting groove and the horizontal limiting protrusion further restrict the horizontal movement of the insert. Therefore, when high-pressure molten aluminum flows from the liquid outlet into the liquid outlet chamber, the locking element, the horizontal limiting groove, and the horizontal limiting protrusion together restrict the movement of the insert, making it difficult for the molten aluminum to flow out from the gap between the mold core insert and the insert, preventing the insert from expanding and eliminating the burrs caused by the expansion of the insert, thereby reducing unnecessary maintenance costs.

Description

Technical Field

[0001] This disclosure relates to the field of die casting mold technology, and in particular to an anti-expansion insert structure and an aluminum alloy high-pressure casting mold. Background Technology

[0002] In the high-pressure casting process of aluminum alloy, molten aluminum is injected into the mold cavity under extremely high pressure and speed. Inserts are key components embedded in the mold body, used to form specific complex features of the product or as vulnerable parts that are easy to replace. Their dimensional accuracy and positional stability directly determine the size and quality of the final product.

[0003] Current insert structures such as Figure 1 As shown, the insert 21 and the mold core insert 22 are mainly or entirely fixed by screws or bolts, and the locking element provides axial locking force, which is perpendicular to the mating surface of the insert. However, when the mold is working, under the impact of high-pressure molten aluminum, the impact force acts on the weak point 23 between the insert and the mold core insert, making the insert easy to expand and deform outward, resulting in a gap between the insert and the mold core insert. Molten aluminum will seep out through the gap, forming an excessively thick burr. This requires extra time to remove the burr, increases the cost of maintaining the insert, and also affects the dimensional accuracy of the product. Utility Model Content

[0004] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide an anti-expansion insert structure and an aluminum alloy high-pressure casting mold that restricts the movement of the insert in the horizontal and vertical directions and prevents the insert from expanding due to the impact of molten aluminum, thus preventing the formation of burrs.

[0005] The purpose of this disclosure is achieved through the following technical solution:

[0006] An anti-expansion insert structure includes a mold core insert, an insert, and a locking member. The mold core insert has an installation area and is further provided with a horizontal limiting groove, a liquid outlet, and a first screw hole. The horizontal limiting groove, the liquid outlet, and the first screw hole are located in the installation area. The insert is located within the installation area and has a protruding horizontal limiting protrusion that abuts against the inner wall of the horizontal limiting groove to restrict the horizontal movement of the insert. The insert has a liquid outlet cavity, and the liquid outlet communicates with the liquid outlet cavity. The insert is provided with a second screw hole. The screwed portion of the locking member passes through the first screw hole and the second screw hole in sequence, and the top of the locking member abuts against the mold core insert to restrict the vertical movement of the insert.

[0007] In one embodiment, the second screw hole is isolated from the liquid outlet chamber.

[0008] In one embodiment, the insert is further provided with a liquid outlet, and the liquid outlet, the liquid outlet passage and the liquid outlet cavity are sequentially connected.

[0009] In one embodiment, the liquid outlet is isolated from the second screw hole.

[0010] In one embodiment, the horizontal limiting protrusion has a first convex surface, a second convex surface, and a third convex surface arranged in sequence, and the horizontal limiting groove has a first concave surface, a second concave surface, and a third concave surface. The first convex surface abuts against the first concave surface, the second convex surface abuts against the second concave surface, and the third convex surface abuts against the third concave surface.

[0011] In one embodiment, the extension direction of the first convex surface intersects the extension direction of the second convex surface, forming a first preset angle.

[0012] In one embodiment, the extension direction of the third convex surface intersects with the extension direction of the second convex surface, forming a second preset angle.

[0013] In one embodiment, the first preset angle is 45°-55°.

[0014] In one embodiment, the second preset angle is 45°-55°.

[0015] In one embodiment, the extension direction of the first concave surface intersects the extension direction of the second concave surface, forming a third preset angle.

[0016] In one embodiment, the extension direction of the third concave surface intersects the extension direction of the second concave surface, forming a fourth preset angle.

[0017] In one embodiment, the third preset angle is 45°-55°.

[0018] In one embodiment, the fourth preset angle is 45°-55°.

[0019] An aluminum alloy high-pressure casting mold includes a fixed mold assembly and an anti-expansion insert structure as described in any of the above embodiments, wherein the anti-expansion insert structure is installed within the fixed mold assembly.

[0020] Compared with the prior art, this disclosure has at least the following advantages:

[0021] Compared to existing insert structures, the anti-expansion insert structure of this solution adds a horizontal limiting groove to the mold core insert and a horizontal limiting protrusion to the insert. In addition to being fixed by a locking device to restrict the vertical movement of the insert, the horizontal limiting groove and the horizontal limiting protrusion also restrict the horizontal movement of the insert. Therefore, when high-pressure molten aluminum flows from the outlet port into the outlet chamber, the locking device, the horizontal limiting groove, and the horizontal limiting protrusion together restrict the movement of the insert, making it difficult for the molten aluminum to flow out from the gap between the mold core insert and the insert, preventing the insert from expanding, eliminating the burrs caused by the expansion of the insert, and thus reducing unnecessary maintenance costs. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of an insert structure in the prior art;

[0024] Figure 2 This is a schematic diagram of an anti-expansion insert structure in one embodiment;

[0025] Figure 3 for Figure 2 The diagram shows the structure of the insert in the anti-expansion insert structure.

[0026] Figure 4 for Figure 3 The diagram shows the structure of the insert from another angle;

[0027] Figure 5 for Figure 2 A partial structural schematic diagram of the anti-expansion insert structure is shown;

[0028] Figure 6 This is a schematic diagram of the structure of an aluminum alloy high-pressure casting mold in one embodiment.

[0029] Reference numerals: 10. Anti-expansion insert structure; 100. Mold core insert; 101. Horizontal limiting groove; 102. Liquid outlet; 103. First screw hole; 1011. First concave surface; 1012. Second concave surface; 1013. Third concave surface; 200. Insert; 201. Liquid outlet cavity; 202. Second screw hole; 203. Liquid outlet; 210. Horizontal limiting protrusion; 211. First convex surface; 212. Second convex surface; 213. Third convex surface;

[0030] 10A, Aluminum alloy high-pressure casting mold; 11, Fixed mold assembly; 11a, Fixed mold core; 11b, Fixed mold blank. Detailed Implementation

[0031] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments:

[0035] Please see Figures 2 to 5This is an embodiment of the anti-expansion insert structure 10 of the present invention, including a mold core insert 100, an insert 200, and a locking member (not shown). The mold core insert 100 has an installation area and is also provided with a horizontal limiting groove 101, a liquid outlet 102, and a first screw hole 103. The horizontal limiting groove 101, the liquid outlet 102, and the first screw hole 103 are located in the installation area. The insert 200 is located in the installation area and is provided with a horizontal limiting protrusion 2. 10. A horizontal limiting protrusion 210 abuts against the inner wall of a horizontal limiting groove 101 to restrict the horizontal movement of the insert 200. The insert 200 has a liquid outlet cavity 201, and a liquid outlet port 102 communicates with the liquid outlet cavity 201. The insert 200 has a second screw hole 202. The screwed portion of the locking member passes through the first screw hole 103 and the second screw hole 202 in sequence, and the top of the locking member abuts against the mold core insert 100 to restrict the vertical movement of the insert 200. The mounting area is used to mount the insert 200. When the die-casting mold is working, high-pressure molten aluminum is injected into the liquid outlet cavity 201 from the liquid outlet port 102 and then cooled to form an aluminum block. Specifically, the locking member can be a screw, bolt, etc., the horizontal limiting groove 101 is one or more dovetail grooves, the horizontal limiting protrusion 210 is one or more dovetail tenons, and the fit between the dovetail groove and the dovetail tenon restricts the horizontal movement of the insert 200.

[0036] In the above embodiments, the mold core insert 100 is equipped with a horizontal limiting groove 101, and the insert 200 is equipped with a horizontal limiting protrusion 210. In addition to being fixed by a locking member to restrict the vertical movement of the insert 200, the mold core insert 100 and the insert 200 can also restrict the horizontal movement of the insert 200 through the cooperation of the horizontal limiting groove 101 and the horizontal limiting protrusion 210. Therefore, when the high-pressure aluminum liquid rushes into the liquid outlet 201 from the liquid outlet 102, the locking member, the horizontal limiting groove 101 and the horizontal limiting protrusion 210 jointly restrict the movement of the insert 200, which makes it difficult for the aluminum liquid to rush out from the gap between the mold core insert 100 and the insert 200, preventing the insert 200 from expanding and eliminating the burrs caused by the expansion of the insert 200, thereby reducing unnecessary maintenance costs.

[0037] like Figure 4 As shown, in one embodiment, the second screw hole 202 is isolated from the liquid outlet chamber 201. In this way, when the high-pressure aluminum liquid enters the liquid outlet chamber 201, it will not interfere with the second screw hole 202, that is, it will not pass through the second screw hole 202, thus ensuring the vertical connection stability between the mold core insert 100 and the insert 200.

[0038] like Figure 4 As shown, in one embodiment, the insert 200 also has a liquid outlet 203, combined with Figure 5As shown, the liquid outlet 102, the liquid outlet 203, and the liquid outlet cavity 201 are sequentially connected. When the high-pressure aluminum liquid is ejected, it first ejects from the liquid outlet 102, then passes through the liquid outlet 203 and enters the liquid outlet cavity 201, and finally cools and solidifies. In this embodiment, the cross-sectional area of ​​the liquid outlet 102 is smaller than the cross-sectional area of ​​the liquid outlet cavity 201. Furthermore, the liquid outlet 203 is isolated from the second screw hole 202, so that the high-pressure aluminum liquid will not interfere with the second screw hole 202 when passing through the liquid outlet 203, thereby preventing damage to the locking component and ensuring the vertical connection stability between the mold core insert 100 and the insert 200.

[0039] like Figure 2 , Figure 3 and Figure 5 As shown, in one embodiment, the horizontal limiting protrusion 210 has a first convex surface 211, a second convex surface 212, and a third convex surface 213 arranged in sequence, and the horizontal limiting groove 101 has a first concave surface 1011, a second concave surface 1012, and a third concave surface 1013. The first convex surface 211 abuts against the first concave surface 1011, the second convex surface 212 abuts against the second concave surface 1012, and the third convex surface 213 abuts against the third concave surface 1013. Thus, when each concave surface abuts against the corresponding convex surface, it can ensure that the mold core insert 100 and the insert 200 are stably connected in the horizontal direction, and restrict the movement of the insert 200 in the horizontal direction.

[0040] like Figure 3 As shown, in one embodiment, the extension direction a of the first convex surface 211 intersects with the extension direction b of the second convex surface 212, forming a first preset angle; and / or, the extension direction c of the third convex surface 213 intersects with the extension direction b of the second convex surface 212, forming a second preset angle. It can be understood that because the extension directions of the first convex surface 211 and the second convex surface 212 intersect to form a certain angle, and the extension directions of the third convex surface 213 and the second convex surface 212 also intersect to form a certain angle, the three convex surfaces constitute a dovetail structure. Through the cooperation of this dovetail structure with the horizontal limiting groove 101, the insert 200 is restricted from horizontal movement under the aforementioned angle conditions. Further, the first preset angle is 45°-55°; and / or, the second preset angle is 45°-55°. In a preferred embodiment, the first preset angle is 50° and the second preset angle is 50°, that is, the first preset angle and the second preset angle are equal, that is, the first convex surface 211 and the third convex surface 213 are symmetrically arranged.

[0041] In another embodiment, the extending direction of the first concave surface 1011 intersects the extending direction of the second concave surface 1012, forming a third preset angle, and / or, the extending direction of the third concave surface 1013 intersects the extending direction of the second concave surface 1012, forming a fourth preset angle. It can be understood that because the extending directions of the first concave surface 1011 and the second concave surface 1012 intersect to form a certain angle, and the extending directions of the third concave surface 1013 and the second concave surface 1012 also intersect to form a certain angle, the three concave surfaces constitute a dovetail groove. Through the cooperation of this dovetail groove and the dovetail structure, the insert 200 is restricted from horizontal movement under the aforementioned angle conditions. Further, the third preset angle is 45°-55°; and / or, the fourth preset angle is 45°-55°. In a preferred embodiment, the third preset angle is 50° and the fourth preset angle is 50°. That is, the third preset angle and the fourth preset angle are equal, which means that the first concave surface 1011 and the third concave surface 1013 are symmetrically arranged.

[0042] In another embodiment, the first preset angle, the second preset angle, the third preset angle and the fourth preset angle are equal, so that the horizontal limiting groove 101 can accommodate the horizontal limiting protrusion 210.

[0043] like Figure 6 As shown, this disclosure also provides an aluminum alloy high-pressure casting mold 10A, including a fixed mold assembly 11 and an anti-expansion insert structure 10 of any of the above embodiments. The anti-expansion insert structure 10 is installed in the fixed mold assembly 11. In this embodiment, the fixed mold assembly 11 includes a fixed mold core 11a and a fixed mold blank 11b. The fixed mold blank 11b has a mold core mounting area for mounting the fixed mold core 11a. The fixed mold core 11a has an insert mounting area for mounting the anti-expansion insert structure 10. When the anti-expansion insert structure 10 is applied to the aluminum alloy high-pressure casting mold 10A, it can ensure that the high-pressure molten aluminum is less likely to overflow from the gap between the mold core insert 100 and the insert 200, thus ensuring the reliability of production.

[0044] Compared with the prior art, this disclosure has at least the following advantages:

[0045] Compared to the existing insert 200 structure, the anti-expansion insert structure 10 of this solution adds a horizontal limiting groove 101 to the mold core insert 100 and a horizontal limiting protrusion 210 to the insert 200. In addition to being fixed by a locking member to restrict the vertical movement of the insert 200, the horizontal movement of the insert 200 is also restricted by the cooperation of the horizontal limiting groove 101 and the horizontal limiting protrusion 210. Therefore, when the high-pressure aluminum liquid rushes into the liquid outlet 201 from the liquid outlet 102, the movement of the insert 200 is restricted by the locking member, the horizontal limiting groove 101 and the horizontal limiting protrusion 210. This makes it difficult for the aluminum liquid to rush out from the gap between the mold core insert 100 and the insert 200, preventing the insert 200 from expanding and eliminating the burrs caused by the expansion of the insert 200, thereby reducing unnecessary maintenance costs.

[0046] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A type of anti-expansion insert structure, comprising a mold core insert, an insert, and a locking element, characterized in that, The mold core insert has an installation area, and the mold core insert also has a horizontal limiting groove, a liquid outlet and a first screw hole, the horizontal limiting groove, the liquid outlet and the first screw hole being located in the installation area; The insert is located in the mounting area. The insert has a horizontal limiting protrusion that abuts against the inner wall of the horizontal limiting groove to restrict the movement of the insert in the horizontal direction. The insert has a liquid outlet cavity, and the liquid outlet port communicates with the liquid outlet cavity. The insert has a second screw hole. The screwed portion of the locking member passes through the first screw hole and the second screw hole in sequence, and the top of the locking member abuts against the mold core insert to restrict the movement of the insert in the vertical direction.

2. The rise-open preventing insert structure according to claim 1, wherein The second screw hole is isolated from the liquid outlet chamber.

3. The open rise resistant insert structure of claim 1, wherein, The insert also has a liquid outlet, and the liquid outlet, the liquid outlet passage and the liquid outlet cavity are connected in sequence.

4. The rise-open preventing insert structure according to claim 3, wherein The liquid outlet is isolated from the second screw hole.

5. The rise-open prevention insert structure according to claim 1, wherein The horizontal limiting protrusion has a first convex surface, a second convex surface, and a third convex surface arranged in sequence, and the horizontal limiting groove has a first concave surface, a second concave surface, and a third concave surface. The first convex surface abuts against the first concave surface, the second convex surface abuts against the second concave surface, and the third convex surface abuts against the third concave surface.

6. The rise-open preventing insert structure according to claim 5, wherein The extending direction of the first convex surface intersects the extending direction of the second convex surface, forming a first preset angle; and / or, The extension direction of the third convex surface intersects with the extension direction of the second convex surface, forming a second preset angle.

7. The rise-open prevention insert structure according to claim 6, wherein The first preset angle is 45°-55°; and / or, The second preset angle is 45°-55°.

8. The rise-open type insert structure according to claim 5, wherein The extending direction of the first concave surface intersects the extending direction of the second concave surface, forming a third preset angle; and / or, The extension direction of the third concave surface intersects with the extension direction of the second concave surface, forming a fourth preset angle.

9. The open rise insert structure of claim 8, wherein, The third preset angle is 45°-55°; and / or, The fourth preset angle is 45°-55°.

10. An aluminum alloy high pressure die casting mold characterized by, The invention includes a fixed mold assembly and an anti-expansion insert structure as described in any one of claims 1-9, wherein the anti-expansion insert structure is installed within the fixed mold assembly.

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