Tooling jig for in-mold pressure casting of middle plate and middle frame of mobile phone

Abstract

This utility model relates to the field of mobile phone accessory manufacturing technology, and in particular to a tooling fixture for in-mold die casting of a mobile phone mid-plate and mid-frame. The tooling fixture is used to fit into the cavity of a die-casting mold. The tooling fixture includes an upper support frame and a lower support frame assembled together. The upper support frame has a first notch on its bottom inner side, and the lower support frame has a second notch on its top inner side. The first and second notches enclose a clamping space for holding the mobile phone mid-frame. Compared with the prior art, by using the upper and lower support frames to clamp the mobile phone mid-frame, and then fitting the tooling fixture into the cavity of the die-casting mold to die-cast the mobile phone mid-plate, the problem of misalignment of the mobile phone mid-frame during the die-casting process can be prevented, thereby improving the production yield of the in-mold die-casting of the mobile phone mid-plate and mid-frame.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone accessory manufacturing technology, and in particular to a tooling fixture for in-mold die casting of mobile phone middle plate and middle frame. Background Technology

[0002] In related technologies, the mobile phone frame and mid-plate are generally die-cast separately, and then installed using screws. This assembly process is relatively complex and inefficient. Later, an in-mold die-casting process emerged. In this process, the mobile phone frame is placed into a die-casting mold, and the cavity of the mobile phone frame and the die-casting mold forms the cavity for die-casting the mobile phone mid-plate. After the molten aluminum inside the cavity solidifies, the mobile phone mid-plate and the mobile phone frame are formed together, thus solving the problem of low efficiency in the traditional screw-fixing installation process.

[0003] However, the inventors discovered in actual production operations that the process of die-casting the phone mid-frame by inserting it into a die-casting mold has the following drawbacks: because the overall structure of the phone mid-frame is thin and light, and it needs to cooperate with the die-casting mold to avoid scratching the outer surface of the phone mid-frame during mold opening and closing, the cavity of the die-casting mold provides very little constraint on the phone mid-frame; during the mold closing process or the injection of molten aluminum into the cavity, the phone mid-frame is prone to misalignment; if the phone mid-frame is in a misaligned state during die-casting, the final product will be defective; due to the unreliable position of the phone mid-frame, the yield rate of die-cast phone mid-frame production is low.

[0004] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content

[0005] In view of this, the present invention addresses the deficiencies of the existing technology, and its main purpose is to provide a tooling fixture for in-mold die casting of mobile phone mid-plate and mid-frame, effectively solving the technical defect in the existing technology where the mobile phone mid-frame and mid-plate are prone to misalignment during in-mold die casting, thereby improving the production yield of in-mold die casting of mobile phone mid-plate and mid-frame.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a tooling fixture for in-mold die casting of a mobile phone mid-plate and mid-frame, the tooling fixture being used to be installed into the cavity of the die casting mold, the tooling fixture including an upper support frame and a lower support frame assembled together, the upper support frame having a first notch on the inner side of its bottom, and the lower support frame having a second notch on the inner side of its top, the first notch and the second notch being able to enclose a clamping space for clamping the mobile phone mid-frame.

[0007] The beneficial effect of the tooling fixture for in-mold die casting of mobile phone middle plate and middle frame provided in this application is that, compared with the prior art, by setting the upper support frame and the lower support frame to clamp the mobile phone middle frame, and then by installing the tooling fixture into the cavity of the die casting mold to cooperate in die casting the mobile phone middle plate, it is possible to prevent the mobile phone middle frame from being misaligned during the die casting process of the mobile phone middle plate, thereby improving the production yield of in-mold die casting of mobile phone middle plate and mobile phone middle frame.

[0008] As a preferred option, the upper and lower support frames are die-cast from stainless steel, and the mobile phone frame is die-cast from titanium alloy.

[0009] The inner side of the phone frame has a connecting recess. After the phone's middle plate is die-cast, the aluminum material of the middle plate can be embedded in the connecting recess.

[0010] As a preferred embodiment, the first notch is provided with a first silicone pad, and the second notch is provided with a second silicone pad;

[0011] After the phone frame is inserted into the clamping space, the first silicone pad can abut against the top and outer side of the phone frame, and the second silicone pad can abut against the bottom and outer side of the phone frame.

[0012] As a preferred embodiment, the first notch is recessed outward to form a first limiting notch, and the second notch is recessed outward to form a second limiting notch;

[0013] A first elastic piece is embedded on the outer bottom of the first silicone pad, and the end of the first elastic piece abuts against the first limiting notch; a second elastic piece is embedded on the outer top of the second silicone pad, and the end of the second elastic piece abuts against the second limiting notch.

[0014] As a preferred embodiment, the inner bottom of the first silicone pad is provided with a first guide slope, which is inclined from top to bottom and outward.

[0015] The second silicone pad has a second guide slope on its inner top side, which is inclined outward from bottom to top.

[0016] As a preferred embodiment, the top of the upper support frame is provided with several first positioning protrusions that extend inward; the bottom of the lower support frame is provided with several second positioning protrusions that extend inward.

[0017] After the tooling fixture is installed into the cavity of the die-casting mold, the first positioning protrusion and the second positioning protrusion can be inserted into the positioning groove of the cavity.

[0018] As a preferred embodiment, a first limiting protrusion extends downward from the inner side of the first positioning protrusion, and the first limiting protrusion can abut against the inner side of the mobile phone frame.

[0019] The second positioning protrusion extends upward from the inner side to form a second limiting protrusion, which can abut against the inner side of the phone frame.

[0020] As a preferred embodiment, the bottom surface of the first limiting protrusion is lower than the top surface of the first notch, and the top surface of the second limiting protrusion is higher than the bottom surface of the first notch.

[0021] As a preferred embodiment, both the bottom of the first limiting protrusion and the top of the second limiting protrusion are coated with a release agent layer, which can be any one of an oil-based release agent layer, a water-based release agent layer, or a solid release agent layer.

[0022] As a preferred embodiment, the tooling fixture also includes a support plate, one end of which is fixedly mounted to the upper support frame and / or the lower support frame, and the other end of which extends horizontally and abuts against the inner side of the mobile phone frame. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional structural schematic diagram of the tooling fixture for in-mold die casting of mobile phone middle plate and middle frame provided in the embodiments of this application;

[0025] Figure 2 yes Figure 1 The image shows a partial enlarged view of point A of the tooling fixture used for in-mold die casting of the middle plate and middle frame of a mobile phone.

[0026] Figure 3 yes Figure 1 The top view shown is of the tooling fixture used for in-mold die casting of the middle plate and middle frame of a mobile phone.

[0027] Figure 4 yes Figure 3 The cross-sectional view at point AA of the tooling fixture used for in-mold die casting of the middle plate and middle frame of a mobile phone is shown.

[0028] Figure 5 yes Figure 4 The image shows a magnified view of section B of the tooling fixture used for in-mold die casting of the middle plate and middle frame of a mobile phone.

[0029] The following are the labeling elements in the figure:

[0030] 10. Tooling fixture; 11. Upper support frame; 111. First notch; 112. First silicone pad; 113. First limiting notch; 114. First spring; 115. First guide slope; 116. First positioning protrusion; 117. First limiting protrusion; 118. First assembly column;

[0031] 12. Lower support frame; 121. Second notch; 122. Second silicone pad; 123. Second limiting notch; 124. Second spring sheet; 125. Second guide slope; 126. Second positioning protrusion; 127. Second limiting protrusion; 128. First assembly hole; 13. Release agent layer; 14. Support plate;

[0032] 20. Phone frame; 21. Connecting recess;

[0033] 30. Mobile phone mid-plate. Detailed Implementation

[0034] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0035] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0036] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0039] Please refer to the following: Figures 1 to 5 The tooling fixture 10 for in-mold die-casting of the middle plate 30 and middle frame of a mobile phone, provided in the embodiments of this application, will now be described. The tooling fixture 10 for in-mold die-casting of the middle plate 30 and middle frame of a mobile phone includes: the tooling fixture 10 and the mobile phone middle frame 20.

[0040] The tooling fixture 10 is used to clamp the mobile phone mid-frame 20. The tooling fixture 10 is used to be inserted into the die-casting mold for die-casting the mobile phone mid-plate 30. The cavity of the die-casting mold, the tooling fixture 10 and the mobile phone mid-frame 20 are used to form the forming chamber for die-casting the mobile phone mid-plate 30. When aluminum paste is injected into the forming chamber, the mobile phone mid-frame 20 and the mobile phone mid-plate 30 can be die-cast into one piece in the mold. The tooling fixture 10 includes an upper support frame 11 and a lower support frame 12 assembled together. The bottom inner side of the upper support frame 11 is provided with a first notch 111 and the top inner side of the lower support frame 12 is provided with a second notch 121. The first notch 111 and the second notch 121 can form a clamping space for clamping the mobile phone mid-frame 20.

[0041] Specifically, the upper support frame 11 and the lower support frame 12 are used to clamp the mobile phone frame 20. Then, by inserting the tooling fixture 10 into the cavity of the die-casting mold to cooperate in die-casting the mobile phone plate 30, the problem of the mobile phone frame 20 being misaligned during the die-casting process of the mobile phone plate 30 can be prevented, thereby improving the production yield of the in-mold die-casting of the mobile phone plate 30 and the mobile phone frame 20.

[0042] In some embodiments, the upper support frame 11 and the lower support frame 12 are die-cast from stainless steel, and the mobile phone mid-frame 20 is die-cast from titanium alloy. A connecting recess 21 is provided on the inner side of the mobile phone mid-frame 20, allowing the aluminum material of the mid-frame 30 to be embedded in the connecting recess 21 after die-casting. By using the upper support frame 11 and the lower support frame 12 made of stainless steel, and because the melting point of stainless steel is higher than that of aluminum profiles, using aluminum slurry as the material for die-casting the mobile phone mid-frame 30 ensures that the tooling fixture 10 is not easily deformed when die-casting the mobile phone mid-frame 30 with the die-casting mold. This further improves the reliability and production yield of the in-mold die-casting of the mobile phone mid-frame 30 and the mobile phone mid-frame 20.

[0043] Specifically, the first notch 111 is provided with a first silicone pad 112, and the second notch 121 is provided with a second silicone pad 122. When the mobile phone frame 20 is inserted into the clamping space, the first silicone pad 112 can abut against the top and outer side of the mobile phone frame 20, and the second silicone pad 122 can abut against the bottom and outer side of the mobile phone frame 20. By setting the first notch 111 and the second notch 121, the clamping stability of the mobile phone frame 20 can be improved, and deformation of the mobile phone frame 20 during the die-casting process of the mobile phone middle plate 30 can be prevented. By setting the first silicone pad 112 in the first notch 111 and the second silicone pad 122 in the second notch 121, it can be ensured that the tooling fixture 10 will not scratch the surface of the mobile phone frame 20 during the clamping process of the mobile phone frame 20.

[0044] More specifically, the first notch 111 is recessed outward with a first limiting notch 113, and the second notch 121 is recessed outward with a second limiting notch 123; a first spring piece 114 is embedded on the outer bottom of the first silicone pad 112, and the end of the first spring piece 114 abuts against the first limiting notch 113; a second spring piece 124 is embedded on the outer top of the second silicone pad 122, and the end of the second spring piece 124 abuts against the second limiting notch 123. The first spring piece 114 and the second spring piece 124 provide support when the first silicone pad 112 and the second silicone pad 122 deform, allowing the phone frame 20 to be fully supported by the first silicone pad 112 and the second silicone pad 122 after being inserted into the clamping space, thus ensuring that the phone frame 20 is not easily deformed or misaligned during the die-casting process of the phone middle plate 30.

[0045] Preferably, the inner bottom of the first silicone pad 112 is provided with a first guide slope 115, which is inclined outward from top to bottom; the inner top of the second silicone pad 122 is provided with a second guide slope 125, which is inclined outward from bottom to top. The first guide slope 115 and the second guide slope 125 improve the smoothness of the assembly of the upper support frame 11 and the lower support frame 12 and their clamping of the mobile phone frame 20, reducing clamping difficulty and improving clamping reliability.

[0046] Understandably, since the mobile phone frame 20 is made of titanium alloy through die casting, and titanium alloy has a low thermal conductivity, heat transfer is slow during temperature conduction, thus hindering heat transfer to some extent. The time required for die casting of the mobile phone middle plate 30 is usually between 8 and 15 seconds, during which the molten aluminum can solidify. Therefore, after the mobile phone frame 20 is installed in the clamping space, the first silicone pad 112 and the second silicone pad 122 will not melt when they are pressed against the outside of the mobile phone frame 20. Furthermore, the first spring piece 114 and the second spring piece 124 can enhance the support strength of the first silicone pad 112 and the second silicone pad 122, thus ensuring the elastic support performance of the first silicone pad 112 and the second silicone pad 122.

[0047] In other embodiments, the top of the upper support frame 11 is provided with a plurality of first positioning protrusions 116, which extend inward; the bottom of the lower support frame 12 is provided with a plurality of second positioning protrusions 126, which extend inward; when the tooling fixture 10 is installed into the cavity of the die-casting mold, the first positioning protrusions 116 and the second positioning protrusions 126 can be inserted into the positioning grooves of the cavity.

[0048] Specifically, a first limiting protrusion 117 extends downward from the inner side of the first positioning protrusion 116, and the first limiting protrusion 117 can abut against the inner side of the mobile phone mid-frame 20; a second limiting protrusion 127 extends upward from the inner side of the second positioning protrusion 126, and the second limiting protrusion 127 can abut against the inner side of the mobile phone mid-frame 20. The bottom surface of the first limiting protrusion 117 is lower than the top surface of the first notch 111, and the top surface of the second limiting protrusion 127 is higher than the bottom surface of the first notch 111. By setting the first limiting protrusion 117 and the second limiting protrusion 127, the installation accuracy of the tooling fixture 10 in the die-casting mold cavity can be improved, thereby further improving the production yield of the in-mold die-casting of the mobile phone mid-frame 20 and the mobile phone mid-plate 30. Meanwhile, the first limiting protrusion 117 and the second limiting protrusion 127 can limit the inner top and inner bottom sides of the mobile phone frame 20, reducing the probability of deformation when the mobile phone frame 20 is die-cast into the mobile phone plate 30.

[0049] Preferably, a release agent layer 13 is applied to the bottom of the first limiting protrusion 117 and the top of the second limiting protrusion 127. The release agent layer 13 is any one of an oil-based release agent layer, a water-based release agent layer, or a solid release agent layer. The oil-based release agent layer can use paraffin oil or silicone oil, the water-based release agent layer can use a water-soluble solvent containing lubricant or film-forming agent, and the solid release agent layer can use paraffin or zinc stearate. Before the tooling fixture 10 is inserted into the cavity of the die-casting mold, the release agent layer 13 is applied to the bottom of the first limiting protrusion 117 and the top of the second limiting protrusion 127, so that the mobile phone middle plate 30 and the mobile phone middle frame 20 will not stick to the upper support frame 11 and the lower support frame 12 after die casting.

[0050] In other embodiments, the upper support frame 11 is provided with a first mounting post 118 at the bottom, the first mounting post 118 extends downward and protrudes from the bottom of the upper support frame 11; the lower support frame 12 is provided with a first mounting hole 128 at the top, and after the upper support frame 11 and the lower support frame 12 are assembled together, the first mounting post 118 can be inserted into the first mounting hole 128.

[0051] Specifically, the tooling fixture 10 also includes a support plate 14. One end of the support plate 14 is fixedly installed on the upper support frame 11 and / or the lower support frame 12, and the other end of the support plate 14 extends horizontally and abuts against the inner side of the mobile phone mid-frame 20. The support plate 14 can further enhance the support of the mobile phone mid-frame 20 and prevent the mobile phone mid-frame 20 from deforming during the die-casting process of the mobile phone mid-plate 30.

[0052] The above are merely preferred embodiments of the present utility model, and only specifically describe the technical principles of the present utility model. These descriptions are only for explaining the principles of the present utility model and should not be construed as limiting the scope of protection of the present utility model in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model, as well as other specific embodiments of the present utility model that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of the present utility model.

Claims

1. A tooling fixture for in-mold die casting of a mobile phone middle plate and middle frame, the tooling fixture (10) being used to fit into the cavity of the die casting mold, characterized in that, The tooling fixture (10) includes an upper support frame (11) and a lower support frame (12) assembled together. The upper support frame (11) has a first notch (111) on the inner side of its bottom and a second notch (121) on the inner side of its top. The first notch (111) and the second notch (121) can enclose a clamping space for clamping the mobile phone frame (20).

2. The tooling fixture for in-mold die-casting of mobile phone middle plates and frames according to claim 1, characterized in that, The upper support frame (11) and the lower support frame (12) are die-cast from stainless steel, and the mobile phone frame (20) is die-cast from titanium alloy. The inner side of the mobile phone frame (20) is provided with a connecting recess (21). After the mobile phone plate (30) is die-cast, the aluminum material of the mobile phone plate (30) can be embedded in the connecting recess (21).

3. The tooling fixture for in-mold die-casting of mobile phone middle plates and frames according to claim 2, characterized in that, The first notch (111) is provided with a first silicone pad (112), and the second notch (121) is provided with a second silicone pad (122). When the mobile phone frame (20) is inserted into the clamping space, the first silicone pad (112) can abut against the top and outer side of the mobile phone frame (20), and the second silicone pad (122) can abut against the bottom and outer side of the mobile phone frame (20).

4. The tooling fixture for in-mold die-casting of mobile phone middle plate and middle frame according to claim 3, characterized in that, The first notch (111) is recessed outward and has a first limiting notch (113), and the second notch (121) is recessed outward and has a second limiting notch (123). The first silicone pad (112) has a first spring piece (114) embedded on the outer bottom of the first spring piece (114), and the end of the first spring piece (114) abuts against the first limiting notch (113); the second silicone pad (122) has a second spring piece (124) embedded on the outer top of the second spring piece (124), and the end of the second spring piece (124) abuts against the second limiting notch (123).

5. The tooling fixture for in-mold die-casting of mobile phone middle plates and frames according to claim 3 or 4, characterized in that, The inner bottom of the first silicone pad (112) is provided with a first guide slope (115), which is inclined from top to bottom and outward. The second silicone pad (122) has a second guide slope (125) on the top inner side, and the second guide slope (125) is inclined from bottom to top and outward.

6. The tooling fixture for in-mold die-casting of mobile phone middle plates and frames according to any one of claims 1-4, characterized in that, The upper support frame (11) has several first positioning protrusions (116) at the top, and the first positioning protrusions (116) extend inward; the lower support frame (12) has several second positioning protrusions (126) at the bottom, and the second positioning protrusions (126) extend inward. When the tooling fixture (10) is installed into the cavity of the die-casting mold, the first positioning protrusion (116) and the second positioning protrusion (126) can be inserted into the positioning groove of the cavity.

7. The tooling fixture for in-mold die-casting of mobile phone middle plate and middle frame according to claim 6, characterized in that, The first positioning protrusion (116) extends downward on the inner side and has a first limiting protrusion (117), which can abut against the inner side of the mobile phone frame (20); The second positioning protrusion (126) extends upward on the inner side and has a second limiting protrusion (127), which can abut against the inner side of the mobile phone frame (20).

8. The tooling fixture for in-mold die-casting of mobile phone middle plate and middle frame according to claim 7, characterized in that, The bottom surface of the first limiting protrusion (117) is lower than the top surface of the first notch (111), and the top surface of the second limiting protrusion (127) is higher than the bottom surface of the first notch (111).

9. The tooling fixture for in-mold die-casting of mobile phone middle plates and frames according to claim 7 or 8, characterized in that, The bottom of the first limiting protrusion (117) and the top of the second limiting protrusion (127) are coated with a release agent layer (13), which is any one of an oil-based release agent layer, a water-based release agent layer, or a solid release agent layer.

10. The tooling fixture for in-mold die-casting of mobile phone middle plate and middle frame according to claim 1, characterized in that, The tooling fixture (10) also includes a support plate (14), one end of which is fixedly installed on the upper support frame (11) and / or the lower support frame (12), and the other end of which extends horizontally and abuts against the inner side of the mobile phone frame (20).

Images