Metal die casting
By designing a material reduction groove on the die-cast part body to control the wall thickness difference, the problem of surface shrinkage and indentation in die-cast parts such as vehicle center control screen brackets has been solved, improving the appearance and assembly quality of the die-cast parts.
Patent Information
- Application Number
- CN202423001552.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-12-05
AI Technical Summary
Uneven wall thickness in the structural design of die-cast parts such as vehicle center console screen brackets can cause shrinkage marks on the surface of the die-cast product, affecting its appearance and the amount of polishing work, and may even lead to scrapping.
Multiple material reduction grooves are designed on the die-cast part body, and the wall thickness difference between adjacent material reduction grooves is controlled within 1.5mm. The uniformity of wall thickness is adjusted by the array of material reduction grooves to avoid local excessive thickness and improve surface shrinkage marks.
It effectively improves the surface shrinkage and indentation problem of die-cast parts, enhances the appearance quality of products, meets customer requirements, and ensures that assembly and function are not affected.
Smart Images
Figure CN223467004U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to metal die casting technical field especially relates to a metal die casting part that can effectively improve the surface shrinkage of die casting. BACKGROUND
[0002] With the development of the automobile industry, customers' requirements for die castings are more and more, and the quality requirements are also higher. Among them, the vehicle-mounted central control screen pursues large screen in size to meet the comfort requirement of sensory vision. At the same time, for the hardware metal appearance parts of the vehicle-mounted screen support and other automobile decoration, higher requirements are put forward in design and production to meet the visual appearance requirements.
[0003] For the vehicle-mounted central control screen support type die casting, if the wall thickness is uneven in the structure design, the surface of the product after die casting is prone to shrinkage indentation, which cannot meet the requirements of customers. Moreover, serious indentation will increase the polishing workload of the die casting, and even cause polishing deformation and scrap, thereby reducing the qualified rate of the product.
[0004] Therefore, it is necessary to provide a metal die casting part which can improve the surface shrinkage indentation without affecting the assembly and function, so as to improve the quality of the die casting and meet the appearance requirements of customers for the product. CONTENT OF THE UTILITY MODEL
[0005] The utility model aims at providing a metal die casting part which can improve the surface shrinkage indentation without affecting the assembly and function, so as to improve the quality of the die casting and meet the appearance requirements of customers for the product.
[0006] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: a metal die casting part is provided, which comprises a die casting part body, a plurality of material reduction grooves are concavely arranged on the die casting part body, the material reduction groove has a bottom wall, a first side wall is formed between adjacent material reduction grooves, and the wall thickness difference between at least the first side wall and the bottom wall is within 1.5 mm.
[0007] Preferably, the wall thickness of the first side wall between any two adjacent material reduction grooves is the same or different, as long as the wall thickness difference between each first side wall and the bottom wall is within 1.5 mm, the case of local over-thickness between the first side wall and the bottom wall due to large wall thickness difference can be avoided, thereby improving the problem of poor product surface shrinkage during die casting and avoiding the generation of shrinkage indentation.
[0008] Preferably, the material reduction groove at the edge position further has a second side wall, which is arranged opposite or adjacent to the first side wall, and the wall thickness difference between the second side wall and the bottom wall is also within 1.5 mm, so that the wall thickness difference between the side wall and the bottom wall of the material reduction groove is further reduced, that is, the wall thickness uniformity of the position where the material reduction groove is recessed is higher, thereby avoiding the case that the wall thickness difference between the side wall and the bottom wall of the material reduction groove is large, and the local over-thickness condition, and more effectively improving the problem of poor surface shrinkage of the product during die casting, and avoiding the generation of shrinkage indentation.
[0009] Preferably, a plurality of the material reduction grooves are arranged in an array to form a plurality of material reduction groove columns, each of the material reduction groove columns is provided with a plurality of the material reduction grooves, and the number of the material reduction grooves provided in each of the material reduction groove columns is the same or different, so that the number of the material reduction grooves of each of the material reduction groove columns can be set according to the strength requirement of the specific die casting, and the number of the material reduction grooves of each of the material reduction groove columns is set without affecting the assembly and function of the die casting, thereby improving the shrinkage indentation on the surface of the die casting and improving the quality of the die casting.
[0010] Preferably, the material reduction groove columns include a first material reduction groove column and second and third material reduction groove columns arranged on both sides of the first material reduction groove column, and the number of the material reduction grooves of the first material reduction groove column is greater than the number of the material reduction grooves of the second and third material reduction groove columns. By increasing the number of the material reduction grooves of the first material reduction groove column in the middle, the wall thickness between the side wall and the bottom wall of the material reduction groove is more uniform, thereby avoiding the surface shrinkage of the product during die casting, meeting the customer's requirements for the appearance of the product, meeting the strength requirement of the mold, and ensuring that the assembly and function of the die casting are not affected.
[0011] Preferably, the width of the material reduction grooves of the first material reduction groove column is greater than the width of the material reduction grooves of the second and third material reduction groove columns, and by widening the width of the material reduction grooves of the first material reduction groove column, the wall thickness of the first side wall between the material reduction grooves of the first material reduction groove column and the adjacent second and third material reduction groove columns is reduced, thereby further avoiding the surface shrinkage of the product during die casting, meeting the customer's requirements for the appearance of the product, meeting the strength requirement of the mold, and ensuring that the assembly and function of the die casting are not affected.
[0012] Preferably, the first material reduction groove column is provided with three material reduction grooves, and the second and third material reduction groove columns are each provided with two material reduction grooves.
[0013] Preferably, the die casting body includes a connecting portion and first and second pieces connected to opposite sides of the connecting portion, and the material reduction grooves are arranged at least in the connecting portion.
[0014] Preferably, a plurality of the material reduction grooves form at least one array on the connecting portion.
[0015] Preferably, the first sheet and the second sheet are respectively arranged obliquely relative to the connecting portion, and the first sheet and the second sheet have the same oblique direction relative to the connecting portion.
[0016] Compared with the prior art, the metal die casting has a plurality of material reducing grooves concave on the die casting body, the material reducing grooves have a bottom wall, and a first side wall is formed between adjacent material reducing grooves, and the wall thickness difference between the first side wall and the bottom wall is within 1.5 mm, so that the wall thickness difference between the first side wall and the bottom wall of the material reducing groove is reduced, thereby avoiding the case that the wall thickness difference between the first side wall and the bottom wall of the material reducing groove is large and the local over-thickness condition occurs, effectively improving the problem of poor surface shrinkage of the product during die casting, avoiding the generation of shrinkage concave printing, improving the quality of the die casting, meeting the appearance requirements of customers on the product, and at the same time, not affecting the assembly and function of the die casting, meeting the assembly requirements of customers. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 is a structural schematic view of the metal die casting of the utility model.
[0018] Figure 2 is Figure 1 an enlarged schematic view of part A in
[0019] Figure 3 is Figure 1 a top view of
[0020] Figure 4 is a sectional view along Figure 3 line B-B in
[0021] Figure 5 is Figure 4 a partial enlarged schematic view of
[0022] Figure 6 is a sectional view along Figure 3 line C-C in
[0023] Figure 7 is Figure 6 a partial enlarged schematic view of DETAILED DESCRIPTION
[0024] Embodiments of the present application will now be described with reference to the accompanying drawings, wherein like elements are referred to with like reference numerals. It should be noted that the positional descriptions, such as upper, lower, left, right, front, back, etc., are based on the positional relationships shown in the drawings and are merely for the convenience of describing the technical solutions of the present application or / and simplifying the description, and thus cannot be construed as indicating or implying that the devices or elements referred to must have a particular position, be constructed in a particular position, and be operated in a particular position, and thus cannot be construed as a limitation on the present application. The first, second, etc., described are merely for distinguishing technical features, and cannot be construed as indicating or implying relative importance or implicitly indicating the number of technical features referred to or the sequence of technical features referred to.
[0025] In combination with Figures 1-7 The metal die casting 100 provided by the present application mainly refers to a bracket of a vehicle-mounted central control screen. Of course, the metal die casting 100 is not limited to the bracket used for the vehicle-mounted central control screen, and can also be a die casting used for a vehicle-mounted electronic product or any other electronic product.
[0026] In combination with Figures 1-7 In the present application, the metal die casting 100 comprises a die casting body 110, and the shape of the die casting body 110 is not specifically limited in the present application. The die casting body 110 is concavely provided with a plurality of material reduction grooves 120, and each material reduction groove 120 can be dispersedly arranged on the die casting body 110 or can be gathered in a local area of the die casting body 110, and the arrangement is flexible according to the structure, strength requirement and forming requirement of the metal die casting 100. Referring to Figure 5 , Figure 7 Each material reduction groove 120 has a bottom wall 123 and side walls 121 and 122 connected with the bottom wall 123, and the wall thickness difference between the side wall 121 or / and the side wall 122 and the bottom wall 123 is within 1.5 mm, thereby reducing the wall thickness difference between the side wall 121 or / and the side wall 122 and the bottom wall 123 of the material reduction groove 120, avoiding the situation that the local wall thickness of the die casting body 110 is too thick, and thus improving the problem of poor product surface shrinkage during die casting and avoiding the generation of shrinkage indentation.
[0027] In combination with Figures 1-7As shown, in one embodiment of the present invention, a plurality of material reducing grooves 120 are arranged adjacent to each other. That is to say, a plurality of material reducing grooves 120 are gathered in a partial area of the die-casting body 110, and there can be at least one area on the die-casting body 110 with a plurality of material reducing grooves 120. In this embodiment, a first side wall 121 is formed between two adjacent material reducing grooves 120, and the wall thickness difference between at least the first side wall 121 and the bottom wall 123 is within 1.5 mm, thereby avoiding the situation where the wall thickness difference between the first side wall 121 and the bottom wall 123 is large and the local excessive thickness occurs, thereby improving the problem of poor shrinkage of the product surface during die-casting and avoiding the generation of shrinkage gravure. It should be noted that the wall thickness of the first side wall 121 between any two adjacent material reducing grooves 120 can be the same or different.
[0028] Combine Figure 5 、 Figure 7 As shown, in this embodiment, the material reducing groove 120 at the edge position may also have a second side wall 122, and the second side wall 122 is arranged opposite to or adjacent to the first side wall 121. In other words, the material reducing groove 120 is formed by connecting the second side wall 122 and the first side wall 121 in sequence. Preferably, the wall thickness difference between the second side wall 122 and the bottom wall 123 is also within 1.5 mm. As a result, the wall thickness difference between the first side wall 121, the second side wall 122 and the bottom wall 123 of each material reducing groove 120 is reduced, thereby avoiding the situation where the wall thickness difference between any side wall of the material reducing groove 120 and the bottom wall 123 is large and the wall thickness is too thick locally, more effectively improving the problem of poor shrinkage of the product surface during die casting and avoiding the generation of shrinkage gravure.
[0029] It is understandable that the thickness of the second side wall 122 is not necessarily set in the same manner, but can be flexibly set according to the position of the material reduction groove 120. If the die casting body 110 in the side area of the material reduction groove 120 has a larger wall thickness, the thickness of the second side wall 122 does not need to be set in the above manner. Figure 5 In the embodiment shown, the second side wall of the rightmost reduction groove 120 is the die casting body 110, which has a relatively large wall thickness, so there is no need to specifically design its wall thickness. Figure 5 The second side wall 122 of the leftmost material reduction groove 120 is located at the edge, and the wall thickness of the second side wall 122 is relatively small, so the difference between the wall thickness of the second side wall 122 and the wall thickness of the bottom wall 123 is set within 1.5 mm.
[0030] The following combination Figures 1-3As shown in an embodiment of the utility model, multiple material reducing grooves 120 are arranged in an array. Thus, multiple material reducing grooves 120 form multiple columns of material reducing grooves arranged in a first direction, each column of material reducing grooves is provided with multiple material reducing grooves 120, and the number of material reducing grooves 120 arranged in each column of material reducing grooves is the same or different. The first direction is the width direction of the die casting body 110, of course, it is not limited thereto.
[0031] Referring to Figure 2 As shown in the embodiment, the number of material reducing grooves 120 of the material reducing groove column in the middle is more than the number of material reducing grooves 120 of the material reducing groove column at the edge position. Thus, the number of material reducing grooves 120 of each column of material reducing grooves can be set according to the strength requirement of the specific die casting 100, and the shrinkage indentation on the surface of the die casting is improved without affecting the assembly and function, and the quality of the die casting is improved.
[0032] Continuing to refer to Figure 2 As shown in an embodiment of the utility model, three columns of material reducing groove columns are arranged on the die casting body 110. Specifically, it includes a first material reducing groove column 120a and a second material reducing groove column 120b and a third material reducing groove column 120c arranged on both sides of the first material reducing groove column 120a. The number of material reducing grooves 120 of the first material reducing groove column 120a is more than the number of material reducing grooves 120 of the second material reducing groove column 120b and the third material reducing groove column 120c, and the number of material reducing grooves 120 of the second material reducing groove column 120b and the third material reducing groove column 120c is the same. The width of the material reducing groove 120 is the distance between the two side walls thereof in the second direction, and the second direction is perpendicular to the first direction, that is, the second direction is the length direction of the die casting body 110. In this embodiment, by increasing the number of material reducing grooves 120 of the first material reducing groove column 120a in the middle, the wall thickness between at least the first side wall 121 and the bottom wall 123 of the material reducing groove 120 is more uniform, thereby avoiding the shrinkage of the product surface during die casting, meeting the customer's requirements for product appearance, meeting the mold strength requirement, and ensuring that the assembly and function of the die casting 100 are not affected.
[0033] More specifically, the width of the material reducing groove 120 of the first material reducing groove column 120a is greater than the width of the material reducing groove 120 of the second material reducing groove column 120b and the third material reducing groove column 120c. By widening the width of the material reducing groove 120 of the first material reducing groove column 120a, the wall thickness of the first side wall 121 between the material reducing groove 120 of the first material reducing groove column 120a and the material reducing groove 120 of the adjacent second material reducing groove column 120b and third material reducing groove column 120c is reduced, further avoiding the shrinkage of the product surface during die casting, meeting the customer's requirements for product appearance, meeting the mold strength requirement, and ensuring that the assembly and function of the die casting are not affected.
[0034] With reference to the drawings still Figure 2 In the embodiment, the first row of the reducing grooves 120a is provided with three reducing grooves 120, and the second row of the reducing grooves 120b and the third row of the reducing grooves 120c are each provided with two reducing grooves 120. The width of the reducing grooves 120 in the first row of the reducing grooves 120a is greater than the width of the reducing grooves 120 in the second row of the reducing grooves 120b and the third row of the reducing grooves 120c, and the length of the reducing grooves 120 in the first row of the reducing grooves 120a is less than the length of the reducing grooves 120 in the second row of the reducing grooves 120b and the third row of the reducing grooves 120c. In this way, compared with the prior art in which each row is provided with two reducing grooves 120, only the number of the reducing grooves 120 in the middle first row of the reducing grooves 120a is increased, so that the wall thickness difference between the first side wall 121 and the bottom wall 123 of the reducing grooves 120 is not too large, the problem of poor surface shrinkage of the product during die casting is effectively improved, the generation of shrinkage pits is avoided, and the strength of the metal die casting 100 and the strength of the mold are ensured, without affecting the assembly and function of the metal die casting 100.
[0035] In combination with Figure 2 , Figure 5 In the embodiment, for the first row of the reducing grooves 120a, the three reducing grooves 120 are arranged at equal intervals along the first direction in sequence, and the first side wall 121 is formed between each two adjacent reducing grooves 120, and the first side wall 121 has a first wall thickness D1, as shown in Figure 5 The wall thickness of the bottom wall 123 of the three reducing grooves 120 is substantially the same, which is expressed as a third wall thickness D3. Moreover, the wall thickness difference between the first wall thickness D1 and the third wall thickness D3 is within 1.5 mm.
[0036] More preferably, the reducing groove 120 located at the side edge of the die casting body 110 can also have a second side wall 122, and the second side wall 122 has a second wall thickness D2, as shown in Figure 5 Moreover, the wall thickness difference between the second wall thickness D2 and the third wall thickness D3 can also be within 1.5 mm.
[0037] In combination with Figures 2-3 , Figure 5 In the embodiment, for the second row of the reducing grooves 120b and the third row of the reducing grooves 120c, the two reducing grooves 120 are also arranged at equal intervals along the first direction in sequence, and the first side wall 121 is also formed between each two adjacent reducing grooves 120. Moreover, the wall thickness difference between the first wall thickness D1 of the first side wall 121 and the third wall thickness D3 is also within 1.5 mm.
[0038] In combination with Figures 3-7As shown, in the embodiment, the first, second and third rows of material-reducing grooves 120a, 120b, 120c form the first side wall 121 between two adjacent material-reducing grooves 120 in the first direction, and form the first side wall 121 between two adjacent material-reducing grooves 120 in the second direction, i.e., the first, second and third rows of material-reducing grooves 120a, 120b, 120c form the first side wall 121 between two adjacent material-reducing grooves 120 in the second direction as well.
[0039] In particular Figures 2-3 , Figures 6-7 As shown, in the second direction, the first row of material-reducing grooves 120a forms the first side wall 121 between one material-reducing groove 120 and the adjacent material-reducing groove 120 of the second row of material-reducing grooves 120b, and the second row of material-reducing grooves 120b forms the first side wall 121 between the material-reducing groove 120 and the adjacent material-reducing groove 120 of the third row of material-reducing grooves 120c. The wall thickness difference between the first wall thickness D1 and the third wall thickness D3 of the first side wall 121 is also within 1.5 mm.
[0040] More preferably, in the second direction, the material-reducing grooves 120 of the first row of material-reducing grooves 120a and the third row of material-reducing grooves 120c at the edge can also have a second side wall 122, and the wall thickness difference between the second wall thickness D2 and the third wall thickness D3 of the second side wall 122 is also within 1.5 mm.
[0041] In particular Figures 1-3 As shown, in another embodiment of the utility model, the die casting body 110 includes a connecting portion 113 and a first piece 111 and a second piece 112 connected to opposite sides of the connecting portion 113, and the material-reducing grooves 120 are arranged at least on the connecting portion 113. Moreover, the material-reducing grooves 120 form at least one array on the connecting portion 113.
[0042] In a specific embodiment, one array of material-reducing grooves is arranged on the connecting portion 113, and specifically includes a first row of material-reducing grooves 120a, a second row of material-reducing grooves 120b and a third row of material-reducing grooves 120c. The arrangement of the first, second and third rows of material-reducing grooves 120a, 120b, 120c is as described above, and will not be described again.
[0043] In particular Figures 1-3 As shown, in the embodiment, the first and second pieces 111, 112 are arranged obliquely relative to the connecting portion 113, and the oblique directions of the first and second pieces 111, 112 relative to the connecting portion 113 are the same. Of course, this structure is not limited thereto.
[0044] In summary, the metal die casting 100, the die casting body 110 is concave and is provided with a plurality of material reducing grooves 120, each material reducing groove 120 has a bottom wall 123, and a first side wall 121 is formed between adjacent material reducing grooves 120, and the wall thickness difference between the first side wall 121 and the bottom wall 123 is within 1.5mm, thereby reducing the wall thickness difference between the first side wall 121 and the bottom wall 123 of the material reducing groove 120, and avoiding the wall thickness difference between the first side wall 121 and the bottom wall 123 of the material reducing groove 120 being too large to cause local over-thickness, effectively improving the problem of product surface shrinkage during die casting, avoiding the generation of shrinkage concave printing, improving the quality of the die casting, meeting the appearance requirements of customers for products, and at the same time not affecting the assembly and function of the die casting, meeting the assembly requirements of customers.
[0045] The above only discloses preferred embodiments of the utility model, of course, cannot limit the right scope of the utility model, therefore, equivalent changes made according to the patent application scope of the utility model still belong to the range covered by the utility model.
Claims
1. A metal die casting comprising a die casting body, characterized in that The die casting body is concavely provided with a plurality of material reduction grooves, each of which has a bottom wall, and a first side wall formed between adjacent material reduction grooves, and the wall thickness difference between the first side wall and the bottom wall is within 1.5 mm.
2. The metal die casting according to claim 1, characterized in that The wall thickness of the first side wall between any two adjacent material reduction grooves is the same or different.
3. The metal die casting according to claim 1, characterized in that The material reduction groove at the edge position further has a second side wall, which is arranged opposite or adjacent to the first side wall, and the wall thickness difference between the second side wall and the bottom wall is also within 1.5 mm.
4. Metal die casting according to any of claims 1 to 3, characterized in that The plurality of material reduction grooves are arranged in an array to form a plurality of material reduction groove columns, each of which is provided with a plurality of material reduction grooves, and the number of material reduction grooves provided in each material reduction groove column is the same or different.
5. The metal die casting according to claim 4, characterized in that The material reduction groove columns include a first material reduction groove column and second and third material reduction groove columns arranged on both sides of the first material reduction groove column, and the number of material reduction grooves in the first material reduction groove column is greater than that in the second and third material reduction groove columns.
6. The metal die casting according to claim 5, characterized in that The width of the material reduction grooves in the first material reduction groove column is greater than that in the second and third material reduction groove columns.
7. The metal die casting according to claim 5, characterized in that The first material reduction groove column is provided with three material reduction grooves, and the second and third material reduction groove columns are each provided with two material reduction grooves.
8. The metal die casting according to any one of claims 1 to 3, characterized in that The die casting body includes a connecting portion and first and second body portions connected to opposite sides of the connecting portion, and the material reduction grooves are arranged at least in the connecting portion.
9. The metal die casting according to claim 8, characterized in that The plurality of material reduction grooves form at least one array in the connecting portion.
10. The metal die casting of claim 8, wherein The first and second body portions are respectively arranged obliquely relative to the connecting portion, and the oblique directions of the first and second body portions relative to the connecting portion are the same.