Spraying shielding mold for double-color injection molding part

Abstract

The utility model relates to a spraying shielding mould of a double-color injection molding part, the double-color injection molding part comprises an inner side material part and an outer side material part, the outer side material part is distributed around the inner side material part, the outer side material part is provided with a positioning hole, the spraying shielding mould comprises a bottom supporting leg, a main body supporting part and a top shielding part, the bottom supporting legs are connected to the bottom of the main body supporting part and are matched with the positioning holes; a first through hole matched with the outer side edge of the outer side material part is formed in the middle of the main body supporting part; the top shielding part is connected to the top of the main body supporting part, a second through hole is formed in the middle of the top shielding part, and the second through hole is matched with the edge shape of the joint between the inner side material part and the outer side material part. Compared with the prior art, the tool shielding device has the advantages that the tool shielding speed is high, the production efficiency is improved, and the product quality is ensured.

Description

Technical Field

[0001] The utility model relates to the field of parts injection molding equipment, in particular to a spray-masking mold for double-color injection molding parts. Background Art

[0002] Two-color injection molded parts are made by simultaneously injecting two different colored plastic materials during the molding process, creating parts with multiple colors. For example, the CNSL upper air vent cover on a car features an ambient light strip on the back, allowing for light transmission. The cover is made of PCABS (polycarbonate-absorbent) and PC, with the PC being transparent and allowing for light transmission.

[0003] For the surface spraying of the above-mentioned parts, a layer of decorative black paint is required. However, the light-transmitting area of ​​the PC material cannot be sprayed, which will affect the light transmission effect of the light source. The current conventional process is to mask the PC material area with masking tape, but manual masking is slow and the masking quality cannot be guaranteed, which will also affect the yield of the subsequent spraying. Utility Model Content

[0004] The purpose of the present utility model is to provide a spray masking mold for two-color injection molded parts in order to overcome the defects of the above-mentioned prior art that masking tape is used to mask the PC material area, but the manual masking efficiency is slow and the masking quality cannot be guaranteed.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A spray-masking mold for a two-color injection molded part, the two-color injection molded part comprising an inner material portion and an outer material portion, the outer material portion surrounding the inner material portion and provided with a positioning hole, the spray-masking mold comprising a bottom support leg, a main body support portion, and a top shielding portion, the bottom support leg being connected to the bottom of the main body support portion and cooperating with the positioning hole; a first through hole being provided in the middle of the main body support portion and cooperating with the outer edge of the outer material portion;

[0007] The top shielding portion is connected to the top of the main body support portion. A second through hole is provided in the middle of the top shielding portion. The second through hole matches the edge shape of the connection between the inner material portion and the outer material portion.

[0008] Furthermore, the inner diameter of the second through hole is smaller than the inner diameter of the first through hole, and a step surface is formed between the second through hole and the first through hole.

[0009] Furthermore, the top shielding portion is a vertical plate-shaped structure distributed along the connection between the inner material portion and the outer material portion.

[0010] Furthermore, the height of the top shielding portion matches the height of the protrusion of the inner material portion.

[0011] Furthermore, the two-color injection molded part has a structure that gradually bulges from the outside to the inside.

[0012] Furthermore, the outer material portion is made of transparent material.

[0013] Furthermore, the inner material portion is made of PCABS material, and the outer material portion is made of transparent PC material.

[0014] Furthermore, the two-color injection molded part is an air outlet cover part.

[0015] Furthermore, there are multiple positioning holes, which are distributed around the outer material portion; and the number of the bottom supporting legs corresponds to the number of the positioning holes.

[0016] Furthermore, the four outer corners of the main body support portion are rounded.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] (1) This solution sets a spray masking mold according to the shape of the two-color injection molded part to achieve masking of the outer and inner material parts of the two-color injection molded part. The bottom support feet cooperate with the various positioning holes of the outer material part to achieve positioning and installation of the outer material part; the outer edge of the outer material part is shielded by the through hole in the middle of the main support part; the connection between the inner and outer material parts is shielded by the through hole in the middle of the top shielding part to achieve overall shielding of the outer material part. When the inner material part is sprayed, the outer material part is shielded and protected by the spray masking mold and will not be sprayed with paint, which is conducive to improving spraying efficiency and improving product quality.

[0019] (2) The spray masking mold of this scheme is not constructed in a one-to-one ratio according to the shape of the outer material part of the two-color injection molded part. Instead, the outermost side of the outer material part is masked by the main support part, and the edge of the connection between the inner material part and the outer material part is masked by the top shielding part, thereby achieving the shielding of the outer material part. On the one hand, it ensures the shielding of the outer material part and improves the spraying quality. On the other hand, it facilitates the manufacture of the spray masking mold and has strong versatility. When used, the tooling shielding speed is fast, which improves production efficiency.

[0020] (3) In this solution, the top shielding part is set to a corresponding height according to the protrusion of the inner material part, which can shield the paint during the spraying process to prevent the paint from splashing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1This is a schematic diagram of a spray masking mold for a two-color injection molded part provided in an embodiment of the present utility model in use;

[0022] Figure 2 This is a schematic structural diagram of a two-color injection molded part provided in an embodiment of the present utility model;

[0023] Figure 3 This is a three-dimensional schematic diagram of a spray-masking mold for a two-color injection molded part provided in an embodiment of the present utility model;

[0024] Figure 4 This is a bottom perspective diagram of a spray-masking mold for a two-color injection molded part provided in an embodiment of the present utility model;

[0025] In the figure, 1. two-color injection molded parts, 101. inner material part, 102. outer material part, 103. positioning hole, 2. spray masking mold, 21. bottom support foot, 22. main body support part, 221. first through hole, 23. top shielding part, 231. second through hole, 232. step surface. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0029] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0030] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0031] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0032] Example 1

[0033] like Figure 1 As shown, this embodiment provides a spray masking mold for a two-color injection molded part, such as Figure 2 As shown, the two-color injection molded part 1 includes an inner material portion 101 and an outer material portion 102 . The outer material portion 102 is distributed around the inner material portion 101 and is provided with a positioning hole 103 .

[0034] like Figure 3 and Figure 4 As shown, the spray masking mold 2 includes a bottom support leg 21, a main body support portion 22 and a top shielding portion 23. The bottom support leg 21 is connected to the bottom of the main body support portion 22 and matches the positioning hole 103. The middle part of the main body support portion 22 is provided with a first through hole 221 that matches the outer edge of the outer material portion 102.

[0035] The top shielding portion 23 is connected to the top of the main support portion 22 . A second through hole 231 is provided in the middle of the top shielding portion 23 . The second through hole 231 matches the edge shape of the connection between the inner material portion 101 and the outer material portion 102 .

[0036] In this solution, a spray masking mold 2 is set according to the shape of the two-color injection molded part 1 to achieve masking of the outer material part 102 in the two-color injection molded part 1. The bottom support feet 21 cooperate with the various positioning holes 103 of the outer material part 102 to achieve positioning and installation with the outer material part 102; the outer edge of the outer material part 102 is shielded by the through hole in the middle of the main support part 22; the connection between the inner material part 101 and the outer material part 102 is shielded by the through hole in the middle of the top shielding part 23 to achieve overall shielding of the outer material part 102. When the inner material part 101 is sprayed, the outer material part 102 is shielded and protected by the spray masking mold 2 and will not be sprayed with paint, which is beneficial to improving spraying efficiency and improving product quality.

[0037] The inner diameter of the second through hole 231 is smaller than that of the first through hole 221 , and a step surface 232 is formed between the second through hole 231 and the first through hole 221 .

[0038] The spray masking mold 2 of this scheme is not constructed in a one-to-one ratio according to the shape of the outer material part 102 of the two-color injection molded part 1, but the outermost side of the outer material part 102 is shielded by the main support part 22, and the edge of the connection between the inner material part 101 and the outer material part 102 is shielded by the top shielding part 23, thereby achieving shielding of the outer material part 102. On the one hand, it ensures the shielding of the outer material part 102 and improves the spraying quality. On the other hand, it facilitates the manufacture of the spray masking mold 2 and has strong versatility.

[0039] The double-shot injection molded part 1 is a structure that gradually bulges from the outside to the inside.

[0040] The top shielding portion 23 is a vertical plate-shaped structure distributed along the connection between the inner material portion 101 and the outer material portion 102 .

[0041] The height of the top shielding portion 23 matches the height of the protrusion of the inner material portion 101 .

[0042] In this solution, the top shielding portion 23 is set to a corresponding height according to the protrusion of the inner material portion 101, which can shield the paint during the spraying process to prevent the paint from splashing.

[0043] The main body support portion 22 is located outside the outer material portion 102 and has a certain thickness to fully shield the outer material portion 102 .

[0044] The outer material portion 102 is made of transparent material.

[0045] Specifically, in this embodiment, the two-shot injection molded part 1 is an air outlet cover part, the inner material portion 101 is made of PCABS, and the outer material portion 102 is made of transparent PC.

[0046] There are multiple positioning holes 103 , which are distributed around the outer material portion 102 . The number of the bottom supporting legs 21 corresponds to the number of the positioning holes 103 .

[0047] In this embodiment, there are four positioning holes 103 , which are distributed at the four corners of the outer material portion 102 .

[0048] The four outer corners of the main body support portion 22 are rounded, which makes it safer to use.

[0049] During the use of the spray masking mold, the spray masking mold is assembled according to the positioning holes of the two-color injection molded parts to mask the outer material part 102;

[0050] Then the inner material portion 101 is sprayed;

[0051] After the spraying operation is completed, the spray masking mold is removed and can be reused.

[0052] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology should be within the scope of protection defined by the claims.

Claims

1. A spray masking mold for a two-color injection molded part, wherein the two-color injection molded part (1) comprises an inner material portion (101) and an outer material portion (102), wherein the outer material portion (102) is distributed around the inner material portion (101), and the outer material portion (102) is provided with a positioning hole (103), characterized in that: The spray masking mold (2) comprises a bottom supporting foot (21), a main body supporting portion (22) and a top shielding portion (23); the bottom supporting foot (21) is connected to the bottom of the main body supporting portion (22) and matches the positioning hole (103); the middle portion of the main body supporting portion (22) is provided with a first through hole (221) matching the outer edge of the outer material portion (102); The top shielding portion (23) is connected to the top of the main body support portion (22), and a second through hole (231) is provided in the middle of the top shielding portion (23), and the second through hole (231) matches the edge shape of the connection between the inner material portion (101) and the outer material portion (102).

2. The spray masking mold for a two-color injection molded part according to claim 1, characterized in that: The inner diameter of the second through hole (231) is smaller than the inner diameter of the first through hole (221), and a step surface (232) is formed between the second through hole (231) and the first through hole (221).

3. The spray masking mold for a two-color injection molded part according to claim 1, characterized in that: The top shielding portion (23) is a vertical plate-shaped structure distributed along the connection between the inner material portion (101) and the outer material portion (102).

4. The spray masking mold for a two-color injection molded part according to claim 3, characterized in that: The height of the top shielding portion (23) matches the height of the protrusion of the inner material portion (101).

5. The spray masking mold for a two-color injection molded part according to claim 1, characterized in that: The two-color injection molded part (1) is a structure that gradually bulges from the outside to the inside.

6. The spray masking mold for a two-color injection molded part according to claim 1, characterized in that: The outer material portion (102) is made of transparent material.

7. The spray masking mold for a two-color injection molded part according to claim 6, characterized in that: The inner material portion (101) is made of PCABS material, and the outer material portion (102) is made of transparent PC material.

8. The spray masking mold for a two-color injection molded part according to claim 7, characterized in that: The two-color injection molded part (1) is an air outlet cover part.

9. The spray masking mold for a two-color injection molded part according to claim 1, characterized in that: There are a plurality of positioning holes (103), which are respectively distributed around the outer material portion (102); and the number of the bottom supporting legs (21) corresponds one to one to the number of the positioning holes (103).

10. The spray masking mold for a two-color injection molded part according to claim 1, characterized in that: The four outer corners of the main body support portion (22) are rounded.

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