Concentrated exhaust structure for die casting
By designing a centralized exhaust structure for die-casting that is independent of the mold body, and using the wave cavity structure to effectively discharge gas and slag materials, the problems of large mold accumulation and large ear materials in the prior art are solved, and a more efficient die-casting process and better products are achieved.
Patent Information
- Application Number
- CN202421747696.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-22
AI Technical Summary
In the existing die-casting mold design, the exhaust area and the mold body are integrated, resulting in a large overall size of the mold and the inability to effectively control the size of the exhaust area, resulting in the metal liquid easily flowing out along the exhaust area during the injection process, forming more ear materials.
A centralized exhaust structure for die-casting independent of the mold body is designed. By setting air intake holes in the lower body that communicate with the mold exhaust passage on the lower body, and a wave groove matching the wave teeth on the lower surface of the upper body is provided to form a wave cavity to achieve effective discharge of gas and slag.
By independent of the exhaust assembly from the mold body, the overall volume of the mold is reduced, and more efficient gas and slag discharge is achieved, the formation of ear materials is reduced, and the efficiency and product quality of the die casting process are improved.
Smart Images
Figure CN222790588U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of plane gauges, in particular to a centralized exhaust structure for die casting. Background Art
[0002] Die castings are made by injecting molten metal into the die casting mold and forming die casting products after the metal liquid cools down. During the process of injecting the metal liquid into the mold, the metal liquid contacts the inner wall of the mold to produce slag, which needs to be discharged from the cavity area of the product in the mold in time to avoid affecting the product body. At the same time, during the process of injecting the metal liquid, a small amount of gas in the closed mold will be pushed away from the cavity of the product in the mold with the flow of the metal liquid and flow with the slag.
[0003] In current mold design, the exhaust area of the mold is usually integrated with the mold body. However, since the exhaust area needs to be large enough (the die-casting mold requires that the exhaust area cannot be less than 20% of the mold space), otherwise a sonic boom will occur when the molten metal is injected, the mold as a whole will be relatively large. At the same time, due to the current mold size limitations, the exhaust area can only be controlled to be as small as possible, so that during die-casting, the molten metal will not flow out of the mold along the exhaust area as much as possible, forming more ear material. Utility Model Content
[0004] In view of the above-mentioned defects of the prior art, the purpose of the present utility model is to provide a centralized exhaust structure for die casting, which can be independent of the mold body, reduce the overall volume of the mold, and can be adapted to more molds, with strong applicability.
[0005] The purpose of the utility model is achieved through such technical solution:
[0006] A centralized exhaust structure for die casting, comprising:
[0007] The lower body has an air inlet hole connected to the exhaust channel of the mold on the front side, and the other end of the air inlet hole is connected to the upper surface of the lower body; the upper surface of the lower body is provided with a plurality of wavy teeth arranged in sequence; the air inlet hole is connected to the bottom of the groove of an adjacent wavy tooth;
[0008] The upper body has a lower surface provided with a wave groove matching the wave teeth on the lower body. After the lower body and the upper body are combined, a wave cavity is formed between the wave teeth and the wave groove; the tail side of the upper body is provided with an external connection groove connected with the wave groove.
[0009] Furthermore, the air inlet comprises:
[0010] A horizontal hole, the axis of which is horizontally arranged on the lower body, and the axis is parallel to the upper surface of the lower body;
[0011] A vertical hole is vertically arranged on the upper surface of the lower body, the lower end of which is connected to the horizontal hole, and the upper end of which is connected to the upper surface of the lower body;
[0012] The drainage groove is concavely arranged on the upper surface of the lower body, located on one side of the wave tooth, and is communicated with the groove bottom of the wave tooth and the upper end of the vertical hole.
[0013] Furthermore, the end of the horizontal hole is connected to the middle of the vertical hole; and the drainage groove comprises:
[0014] A deep groove is arranged on the side of the vertical hole, and the vertical hole is connected with the deep groove through a notch;
[0015] The shallow groove is located on one side of the wave tooth and is connected to the groove bottom of the wave tooth and the upper end of the vertical hole respectively. The groove depth of the shallow groove is one fifth to one third of the groove depth of the deep groove.
[0016] Furthermore, the wavy teeth on the upper surface of the lower body are divided into two groups, which are arranged at intervals; the two ends of each group of wavy teeth are arranged obliquely; the wavy teeth are formed into a trapezoid outside;
[0017] There are two groups of drainage grooves, which are connected to two groups of wavy teeth respectively; the end of the shallow groove is flush with the distal end of the wavy tooth; the head end of the shallow groove is located at one third to one half of the distance from the proximal end to the distal end of the wavy tooth; the deep groove is connected to the head end of the shallow groove.
[0018] Furthermore, a corresponding inner groove is provided in the area of the lower surface of the upper body corresponding to the shallow groove; the end of the inner groove is flush with the end of the shallow groove; the head end of the inner groove is flush with the middle of the deep groove; the depth of the inner groove is 1.5 to 3 times the depth of the shallow groove.
[0019] Furthermore, the outline of the external connecting groove on the upper body is funnel-shaped, and the width of the opening end is the same as the width of the wave groove; the bottom of the external connecting groove is flush with the wave crest height of the wave groove.
[0020] Furthermore, the wavelengths of the wave teeth and the wave grooves are the same; the height of the wave teeth is greater than the depth of the wave grooves; and the crests and troughs of the wave teeth and the wave grooves correspond to each other.
[0021] Furthermore, the height of the wave tooth is 1.01 to 1.03 times the height of the wave groove; the side gap width of the wave cavity between the wave tooth and the wave groove is 0.8 to 0.9 times the height of the wave groove; the gap width of the wave cavity corresponding to the tooth portion of the wave tooth is 0.6 to 0.7 times the height of the wave groove; the gap width of the wave cavity corresponding to the groove portion of the wave tooth is 0.8 to 0.9 times the height of the wave groove.
[0022] Furthermore, the height of the wave tooth is 9.2 mm; the depth of the wave groove is 9 mm; the gap width of the wave cavity corresponding to the tooth part of the wave tooth is 0.6 mm; the gap width of the wave cavity corresponding to the groove part of the wave tooth is 0.8 mm; the side gap width of the wave cavity between the wave tooth and the wave groove is 0.8 mm; the wavelength of the wave tooth is 9 mm.
[0023] Furthermore, the upper surface of the upper body is provided with a plurality of through holes penetrating the wave groove and the external connecting groove; and a retractable ejector pin is provided in the through hole.
[0024] Due to the adoption of the above technical solution, the utility model has the following advantages:
[0025] 1. The exhaust component is set independently from the mold and connected with the mold slag discharge port through the air inlet hole to separate the mold body from the exhaust component, greatly reducing the volume of the mold body. At the same time, the exhaust component can also be used flexibly.
[0026] 2. The wave cavity structure is formed by combining the wave groove box and the wave tooth, so that the gas and slag entering from the mold can be smoothly decelerated and accommodated, achieving the purpose of exhaust and slag discharge.
[0027] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and study, or may be taught from the practice of the present invention to some extent. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] The accompanying drawings of the present utility model are as follows:
[0029] Figure 1 Schematic diagram of the first three-dimensional structure of the concentrated exhaust structure for die casting in the embodiment.
[0030] Figure 2 Schematic diagram of the second three-dimensional structure of the concentrated exhaust structure for die casting in the embodiment.
[0031] Figure 3 Schematic diagram of the top view of the centralized exhaust structure for die casting in the embodiment.
[0032] Figure 4 for Figure 3 Schematic diagram of the structure at the AA section.
[0033] Figure 5 for Figure 3 Schematic diagram of the structure of the middle BB section.
[0034] Figure 6 for Figure 3 Schematic diagram of the structure at the CC section.
[0035] Figure 7 for Figure 6 Enlarged structural diagram at point D in the middle.
[0036] Figure 8 for Figure 6 Enlarged structural diagram at E in the middle.
[0037] Fig. 9 for Figure 3 Schematic diagram of the structure of the FF section.
[0038] Fig.10 for Fig. 9 Enlarged structural diagram at G in the middle.
[0039] Fig.11 It is a schematic diagram of the three-dimensional structure of the lower body in the embodiment.
[0040] Fig.12 for Fig.11 Enlarged structural diagram at H in the middle.
[0041] Fig.13 Schematic diagram of the three-dimensional structure of the upper body in the embodiment.
[0042] Fig.14 It is a schematic diagram of the structure of the wave teeth and the wave grooves after the upper body and the lower body are combined in the embodiment.
[0043] In the figure: 1. lower body; 111. horizontal hole; 112. vertical hole; 1131. deep groove; 1132. shallow groove; 12. wave teeth; 2. upper body; 21. wave groove; 22. external connecting groove; 23. internal groove; 24. perforation; 3. wave cavity. DETAILED DESCRIPTION
[0044] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0045] Example:
[0046] like Figures 1 to 14 As shown, a centralized exhaust structure for die casting includes:
[0047] The lower body 1 has an air inlet hole connected to the exhaust channel of the mold on the front side, and the other end of the air inlet hole is connected to the upper surface of the lower body 1; the upper surface of the lower body 1 is provided with a plurality of wavy teeth 12 arranged in sequence; the air inlet hole is connected to the bottom of the groove of an adjacent wavy tooth 12;
[0048] The upper body 2 has a wave groove 21 on its lower surface that matches the wave tooth 12 on the lower body 1. After the lower body 1 and the upper body 2 are combined, a wave cavity 3 is formed between the wave tooth 12 and the wave groove 21. The tail side of the upper body 2 is provided with an external connecting groove 22 that communicates with the wave groove 21.
[0049] In this embodiment, the air inlet includes:
[0050] A horizontal hole 111, the axis of which is horizontally arranged on the lower body 1, and the axis is parallel to the upper surface of the lower body 1;
[0051] A vertical hole 112 is vertically arranged on the upper surface of the lower body 1, with the lower end communicating with the horizontal hole 111 and the upper end communicating with the upper surface of the lower body 1;
[0052] The drainage groove is concavely arranged on the upper surface of the lower body 1 , located on one side of the wave tooth 12 , and is connected with the groove bottom of the wave tooth 12 and the upper end of the vertical hole 112 .
[0053] The horizontal holes 111 facilitate drainage, and the vertical holes 112 facilitate the guidance of gas and slag. The drainage groove can smoothly guide the incoming gas and slag into the wave cavity 3.
[0054] In this embodiment, the end of the horizontal hole 111 is connected to the middle of the vertical hole 112; the drainage groove includes:
[0055] The deep groove 1131 is arranged on the side of the vertical hole 112, and the vertical hole 112 is connected with the deep groove 1131 through a notch;
[0056] The shallow groove 1132 is located on one side of the wave tooth 12 and is connected to the groove bottom of the wave tooth 12 and the upper end of the vertical hole 112 respectively. The groove depth of the shallow groove 1132 is one fifth to one third of the groove depth of the deep groove 1131 .
[0057] The combination of the deep groove 1131 and the shallow groove 1132 can guide the incoming gas and slag to be evenly dispersed.
[0058] In this embodiment, the wavy teeth 12 on the upper surface of the lower body 1 are divided into two groups, which are arranged at intervals; the two ends of each group of the wavy teeth 12 are arranged obliquely; the wavy teeth 12 are formed into a trapezoidal shape;
[0059] There are two groups of drainage grooves, which are connected to two groups of wave teeth 12 respectively; the end of the shallow groove 1132 is flush with the distal end of the wave tooth 12; the head end of the shallow groove 1132 is located at one-third to one-half of the distance from the proximal end to the distal end of the wave tooth 12; the deep groove 1131 is connected to the head end of the shallow groove 1132.
[0060] The above design can better guide and disperse the gas and slag evenly.
[0061] In this embodiment, a corresponding inner groove 23 is provided in the area of the lower surface of the upper body 2 corresponding to the shallow groove 1132; the end of the inner groove 23 is flush with the end of the shallow groove 1132; the head end of the inner groove 23 is flush with the middle of the deep groove 1131; the depth of the inner groove 23 is 1.5 to 3 times the depth of the shallow groove 1132.
[0062] The specific depth of the inner groove 23 is selected to be 2.5 times the depth of the shallow groove 1132 , which can better guide the gas and slag into the wave cavity 3 .
[0063] In this embodiment, the outer connecting groove 22 on the upper body 2 has a funnel-shaped profile, and the width of the opening end is the same as the width of the wave groove 21 ; the bottom of the outer connecting groove 22 is flush with the wave crest height of the wave groove 21 .
[0064] In this embodiment, the wavelengths of the wave teeth 12 and the wave grooves 21 are the same; the height of the wave teeth 12 is greater than the depth of the wave grooves 21; and the crests and troughs of the wave teeth 12 and the wave grooves 21 correspond to each other.
[0065] The height of the wave tooth 12 is 1.01 to 1.03 times the height of the wave groove 21; the side gap width of the wave cavity 3 between the wave tooth 12 and the wave groove 21 is 0.8 to 0.9 times the height of the wave groove 21; the gap width of the wave cavity 3 corresponding to the tooth portion of the wave tooth 12 is 0.6 to 0.7 times the height of the wave groove 21; the gap width of the wave cavity 3 corresponding to the groove portion of the wave tooth 12 is 0.8 to 0.9 times the height of the wave groove 21. Specifically in this embodiment, Fig.14 As shown, the height (a) of the wave tooth 12 is 9.2 mm; the depth (b) of the wave groove 21 is 9 mm; the gap width (d) of the wave cavity 3 corresponding to the tooth portion of the wave tooth 12 is 0.6 mm; the gap width (c) of the wave cavity 3 corresponding to the groove portion of the wave tooth 12 is 0.8 mm; the side gap width (e) of the wave cavity 3 between the wave tooth 12 and the wave groove 21 is 0.8 mm; the wavelength (f) of the wave tooth 12 is 9 mm.
[0066] In this embodiment, the upper surface of the upper body 2 is provided with a plurality of through holes 24 penetrating the wave groove 21 and the outer connecting groove 22; and a retractable ejector pin is provided in the through hole 24.
[0067] When the slag enters, the through hole 24 can be partially filled in the through hole 24. When the slag is subsequently removed, the slag entering the through hole 24 can be used as a force point for removing the slag, so that the slag can be easily separated from the surfaces of the lower body 1 and the upper body 2.
[0068] The centralized exhaust structure for die casting in this embodiment is used as follows: the upper body 2 and the lower body 1 are combined and molded together, and then installed to the exhaust port of the die casting mold body, so that the exhaust port of the die casting mold is seamlessly connected with the air inlet hole of the lower body 1.
[0069] During die casting, the incoming molten metal pushes the residual gas in the die casting mold to flow into the wave cavity 3, and then the slag also flows into the wave cavity 3, and finally the die casting is completed. After the die casting is completed, the lower body 1 and the upper body 2 are separated as the mold is opened by pressing the mold body, and the ejector is synchronously pushed into the perforation 24 of the upper body 2 to push off the slag adhering to the upper body 2.
[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.
Claims
1. A centralized exhaust structure for die casting, characterized in that: include: The lower body has an air inlet hole connected to the exhaust channel of the mold on the front side, and the other end of the air inlet hole is connected to the upper surface of the lower body; the upper surface of the lower body is provided with a plurality of wavy teeth arranged in sequence; the air inlet hole is connected to the bottom of the groove of an adjacent wavy tooth; The upper body has a lower surface provided with a wave groove matching the wave teeth on the lower body. After the lower body and the upper body are combined, a wave cavity is formed between the wave teeth and the wave groove; the tail side of the upper body is provided with an external connection groove connected with the wave groove.
2. The concentrated exhaust structure for die casting according to claim 1, characterized in that: The air inlet comprises: A horizontal hole, the axis of which is horizontally arranged on the lower body, and the axis is parallel to the upper surface of the lower body; A vertical hole is vertically arranged on the upper surface of the lower body, the lower end of which is connected to the horizontal hole, and the upper end of which is connected to the upper surface of the lower body; The drainage groove is concavely arranged on the upper surface of the lower body, located on one side of the wave tooth, and is communicated with the groove bottom of the wave tooth and the upper end of the vertical hole.
3. The concentrated exhaust structure for die casting according to claim 2, characterized in that: The end of the horizontal hole is connected to the middle of the vertical hole; the drainage groove includes: A deep groove is arranged on the side of the vertical hole, and the vertical hole is connected with the deep groove through a notch; The shallow groove is located on one side of the wave tooth and is connected to the groove bottom of the wave tooth and the upper end of the vertical hole respectively. The groove depth of the shallow groove is one fifth to one third of the groove depth of the deep groove.
4. The concentrated exhaust structure for die casting according to claim 3, characterized in that: The upper surface of the lower body has two groups of wavy teeth, which are arranged at intervals; the two ends of each group of wavy teeth are arranged obliquely; the wavy teeth form a trapezoid outside; There are two groups of drainage grooves, which are connected to two groups of wavy teeth respectively; the end of the shallow groove is flush with the distal end of the wavy tooth; the head end of the shallow groove is located at one third to one half of the distance from the proximal end to the distal end of the wavy tooth; the deep groove is connected to the head end of the shallow groove.
5. The concentrated exhaust structure for die casting according to claim 3, characterized in that: A corresponding inner groove is provided in the area corresponding to the shallow groove on the lower surface of the upper body; the end of the inner groove is flush with the end of the shallow groove; the head end of the inner groove is flush with the middle of the deep groove; the depth of the inner groove is 1.5 to 3 times the depth of the shallow groove.
6. The concentrated exhaust structure for die casting according to claim 3, characterized in that: The outer connecting groove on the upper body has a funnel-shaped profile, and the width of the opening end is the same as the width of the wave groove; the bottom of the outer connecting groove is flush with the wave crest height of the wave groove.
7. The concentrated exhaust structure for die casting according to claim 1, characterized in that: The wavelengths of the wave teeth and the wave grooves are the same; the height of the wave teeth is greater than the depth of the wave grooves; the crests and troughs of the wave teeth and the wave grooves correspond to each other.
8. The concentrated exhaust structure for die casting according to claim 7, characterized in that: The height of the wave tooth is 1.01 to 1.03 times the height of the wave groove; the side gap width of the wave cavity between the wave tooth and the wave groove is 0.8 to 0.9 times the height of the wave groove; the gap width of the wave cavity corresponding to the tooth part of the wave tooth is 0.6 to 0.7 times the height of the wave groove; the gap width of the wave cavity corresponding to the groove part of the wave tooth is 0.8 to 0.9 times the height of the wave groove.
9. The concentrated exhaust structure for die casting according to claim 8, characterized in that: The height of the wave tooth is 9.2 mm; the depth of the wave groove is 9 mm; the gap width of the wave cavity corresponding to the tooth part of the wave tooth is 0.6 mm; the gap width of the wave cavity corresponding to the groove part of the wave tooth is 0.8 mm; the side gap width of the wave cavity between the wave tooth and the wave groove is 0.8 mm; the wavelength of the wave tooth is 9 mm.
10. The concentrated exhaust structure for die casting according to claim 1, characterized in that: The upper surface of the upper body is provided with a plurality of through holes penetrating the wave groove and the outer connecting groove; and a retractable ejector pin is provided in the through hole.