Injection molding middle structure of U-shaped double-shot molding decoration strip
By designing the injection molding intermediate structure of the U-shaped two-color injection molding trim, including the anti-deforming support structure and reinforcement module, the problems of easy deformation and poor material bonding during the injection molding process of U-shaped two-color injection molding trim are solved, and the stability of product size and material bonding strength are improved.
Patent Information
- Application Number
- CN202421657682.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-07-15
AI Technical Summary
U-shaped two-color injection molding trim is prone to deformation during the injection molding process, resulting in the product size not meeting the requirements, and the bonding area between PC material and PCABS material is easily separated and fall off, affecting product quality.
An injection molding intermediate structure of U-shaped two-color injection molding strip is designed, including a deformation-proof support structure and reinforcement module. The anti-deformation support structure forms a Z-shaped structure through the first connecting rod, the corner connecting rod and the second connecting rod, supporting both ends of the U-shaped plastic part to reduce the risk of deformation. The reinforcement rib module increases the area of the material joint through the first reinforcement rib, the second reinforcement rib and the guide protrusion, and improves the bonding force.
It effectively reduces the deformation risk of U-shaped two-color injection molding trim during the injection molding process, improves the stability and pass rate of product size, enhances material bonding, and improves product quality.
Smart Images
Figure CN222756528U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of injection molding decorative strips, in particular to an injection molding intermediate structure of a U-shaped double-color injection molding decorative strip. Background Art
[0002] like Figure 1 As shown, the U-shaped two-color injection molding trim is a decorative strip on the central channel of the car. It is a two-color injection molding process based on the materials PC and PCABS, with surface spraying and laser engraving. The PC layer plays a light-transmitting role after laser engraving. The product has a U-shaped structure.
[0003] However, during the injection molding process, the U-shaped part of the product is prone to warping and deformation, causing the product size to not meet the requirements and reducing the pass rate.
[0004] In addition, if Figure 2 As shown, due to the two-color injection molding, the structural design between the PC material and the PCABS material is very important. The PC material of this product is in the shape of a long and thin strip, and the bonding area between the PC material and the PCABS material is only a connecting bottom plate with a small thickness and a small bonding area, which is prone to separation and falling off, affecting the quality of the product.
[0005] Therefore, it is necessary to improve the product structure to reduce the deformation caused by the injection molding process and the separation and falling off problems caused by material bonding problems. Utility Model Content
[0006] The purpose of the utility model is to provide an injection molding intermediate structure of a U-shaped two-color injection molding strip in order to overcome the defect that the U-shaped part is easily deformed during the injection molding process of the U-shaped two-color injection molding strip in the prior art, resulting in the product size not meeting the requirements.
[0007] The purpose of the utility model can be achieved through the following technical solutions:
[0008] A U-shaped two-color injection molding intermediate structure, the U-shaped two-color injection molding decorative strip includes a U-shaped first color plastic part, a long strip of first color plastic part and a long strip of second color plastic part, the long strip of first color plastic part is connected to one end of the U-shaped first color plastic part, the long strip of second color plastic part is connected to one side of the long strip of first color plastic part, the injection molding intermediate structure includes an anti-deformation support structure, the anti-deformation support structure includes a first connecting rod, an angle connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are arranged parallel to each other, the angle connecting rod is connected to one end of the first connecting rod and the second connecting rod at the same angle to form a Z-shaped structure, and the ends of the first connecting rod and the second connecting rod that are far away from each other are respectively connected to the inner sides of the two ends of the U-shaped first color plastic part.
[0009] Furthermore, the angle between the angled connecting rod and the first connecting rod and the second connecting rod is within the range of 120 degrees to 160 degrees.
[0010] Furthermore, a positioning protrusion is provided in the middle of the angle connecting rod.
[0011] Furthermore, the positioning protrusion is a cylindrical structure.
[0012] Furthermore, the connection between the elongated second color plastic part and the elongated first color plastic part is a base plate structure, and the injection molding intermediate structure also includes a plurality of reinforcing rib modules, each of which is evenly distributed on the base plate structure and respectively connects the elongated second color plastic part and the elongated first color plastic part.
[0013] Furthermore, the reinforcement rib module includes a first reinforcement rib, a second reinforcement rib and a guide protrusion, the first reinforcement rib and the second reinforcement rib are both installed on the base plate structure and respectively connect the elongated second color plastic part and the elongated first color plastic part, the first reinforcement rib and the second reinforcement rib are both plate-like structures, and a U-shaped groove is provided on one side close to the elongated second color plastic part; the guide protrusion is arranged on the elongated second color plastic part, and is located between the elongated second color plastic part and the elongated first color plastic part in the horizontal direction, and is located at the top of the U-shaped groove in the vertical direction.
[0014] Furthermore, the bottom of the guide protrusion is connected to the long strip of the second color plastic part, and the top is a V-shaped surface.
[0015] Furthermore, there are multiple reinforcing rib modules, which are evenly distributed along the connection between the long strip-shaped second color plastic part and the long strip-shaped first color plastic part.
[0016] Furthermore, the U-shaped first color plastic part and the long strip first color plastic part are made of PCABS material.
[0017] Furthermore, the long strip of second color plastic part is made of PC material.
[0018] Compared with the prior art, the utility model has the following advantages:
[0019] (1) The utility model sets an anti-deformation support structure between the inner sides of the two ends of the U-shaped first color plastic part. During the injection molding process of the U-shaped two-color injection molding strip, the first connecting rod and the second connecting rod of the anti-deformation support structure will support the two ends of the U-shaped two-color injection molding strip so as to offset the shrinkage deformation of the product during the injection molding process. In addition, due to the staggered arrangement of the first connecting rod and the second connecting rod and the transfer of the angle connecting rod, the transfer of longitudinal force is realized, and a slight elastic deformation space is provided, so that the surface of the U-shaped two-color injection molding strip is smoother and less prone to indentation during the injection molding process. After the product is cooled and deformed stably during injection molding, the two ends are trimmed to achieve the purpose of dimensional stability.
[0020] Therefore, the utility model increases the structural strength of the product, reduces the risk of deformation, and improves the size qualification rate.
[0021] (2) The reinforcing rib module provided in the present invention increases the area of the junction between the long strip-shaped second color plastic part and the long strip-shaped first color plastic part, thereby increasing the bonding force of the two plastics during the injection molding process, making the product less likely to separate and fall off, thereby improving product quality; on the other hand, the U-shaped groove and guide protrusion provided can accommodate the wiring harness, collect the wiring harness, and fix it in place;
[0022] Therefore, the utility model improves the bonding force of the two-color injection molding and improves the product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a structural schematic diagram of an existing U-shaped two-color injection molding decorative strip provided in the background technology of the utility model;
[0024] Figure 2 It is a partially enlarged schematic diagram of an existing U-shaped two-color injection molding strip provided in the background technology of the utility model;
[0025] Figure 3 It is a structural schematic diagram of an injection molding intermediate structure of a U-shaped two-color injection molding decorative strip provided in an embodiment of the utility model;
[0026] Figure 4 A schematic structural diagram of an anti-deformation support structure provided in an embodiment of the utility model;
[0027] Figure 5 This is a structural schematic diagram of a reinforcing rib module provided in an embodiment of the utility model;
[0028] In the figure, 1. U-shaped first color plastic part, 2. long strip of first color plastic part, 201. bottom plate structure, 3. long strip of second color plastic part, 4. anti-deformation support structure, 401. first connecting rod, 402. angle connecting rod, 403. second connecting rod, 404. positioning protrusion, 5. reinforcement rib module, 501. first reinforcement rib, 502. second reinforcement rib, 503. guide protrusion, 504. U-shaped groove. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0030] 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 present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0031] 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, further definition and explanation thereof is not required in subsequent drawings.
[0032] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.
[0033] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. 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, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0034] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0035] Example 1
[0036] like Figure 3 and Figure 4 As shown, this embodiment provides an injection molding intermediate structure of a U-shaped two-color injection molding decorative strip, the U-shaped two-color injection molding decorative strip includes a U-shaped first color plastic part 1, a long strip of first color plastic part 2 and a long strip of second color plastic part 3, the long strip of first color plastic part 2 is connected to one end of the U-shaped first color plastic part 1, and the long strip of second color plastic part 3 is connected to one side of the long strip of first color plastic part 2, characterized in that the injection molding intermediate structure includes an anti-deformation support structure 4, the anti-deformation support structure 4 includes a first connecting rod 401, an angle connecting rod 402 and a second connecting rod 403, the first connecting rod 401 and the second connecting rod 403 are arranged parallel to each other, the angle connecting rod 402 is respectively connected to one end of the first connecting rod 401 and the second connecting rod 403 at the same angle to form a Z-shaped structure, and the ends of the first connecting rod 401 and the second connecting rod 403 that are far away from each other are respectively connected to the inner sides of both ends of the U-shaped first color plastic part 1.
[0037] The utility model arranges an anti-deformation support structure 4 between the inner sides of the two ends of the U-shaped first color plastic part 1. During the injection molding process of the U-shaped two-color injection molding strip, the first connecting rod 401 and the second connecting rod 403 of the anti-deformation support structure 4 will support the two ends of the U-shaped two-color injection molding strip to offset the shrinkage deformation of the product during the injection molding process. In addition, due to the staggered arrangement of the first connecting rod 401 and the second connecting rod 403 and the connection through the angle connecting rod 402, the transfer of longitudinal force is realized, and a slight elastic deformation space is provided, so that the surface of the U-shaped two-color injection molding strip is smoother and less prone to indentation during the injection molding process. After the product is injection molded and cooled and the deformation is stable, the two ends are trimmed to achieve the purpose of dimensional stability.
[0038] Preferably, the angle between the angled connecting rod 402 and the first connecting rod 401 and the second connecting rod 403 is within the range of 120 degrees to 160 degrees. This angle range can provide a suitable elastic deformation space while ensuring structural stability.
[0039] In this embodiment, the included angle between the angled connecting rod 402, the first connecting rod 401 and the second connecting rod 403 is 135 degrees.
[0040] Preferably, a positioning protrusion 404 is provided in the middle of the angle connecting rod 402 to position the anti-deformation support structure 4 during the injection molding process of the U-shaped two-color injection molding trim.
[0041] The positioning protrusion 404 may be a columnar structure, a triangular pyramid or a polygonal structure, etc. In this embodiment, it is set to be a cylindrical structure.
[0042] In order to overcome the problem of weak structure at the junction of two plastic products, it is preferred that Figure 5 As shown, the connection between the long strip of second color plastic part 3 and the long strip of first color plastic part 2 is a base plate structure 201, and the injection molding intermediate structure also includes a plurality of reinforcing rib modules 5, each reinforcing rib module 5 is evenly distributed on the base plate structure 201, and each is respectively connected to the long strip of second color plastic part 3 and the long strip of first color plastic part 2.
[0043] Specifically, the reinforcing rib module 5 includes a first reinforcing rib 501, a second reinforcing rib 502 and a guide protrusion 503. The first reinforcing rib 501 and the second reinforcing rib 502 are both installed on the base plate structure 201 and respectively connect the elongated second color plastic part 3 and the elongated first color plastic part 2. The first reinforcing rib 501 and the second reinforcing rib 502 are both plate-like structures, and a U-shaped groove 504 is provided on one side close to the elongated second color plastic part 3; the guide protrusion 503 is arranged on the elongated second color plastic part 3, and is located between the elongated second color plastic part 3 and the elongated first color plastic part 2 in the horizontal direction, and is located at the top of the U-shaped groove 504 in the vertical direction.
[0044] The reinforcing rib module 5 provided in the present scheme, on the one hand, increases the area of the junction between the long strip-shaped second color plastic part 3 and the long strip-shaped first color plastic part 2, thereby increasing the bonding force of the two plastics during the injection molding process, making the product less likely to separate and fall off, thereby improving product quality; on the other hand, the U-shaped groove 504 and the guide protrusion 503 provided can accommodate the wiring harness, collect the wiring harness, and fix it in place.
[0045] Preferably, the bottom of the guide protrusion 503 is connected to the long strip of second color plastic part 3, and the top is a V-shaped surface. The whole is located on the side of the long strip of second color plastic part 3. The upper inclined surface of the top can be used for wiring harness, and the lower inclined surface can limit and fix the installed wiring harness.
[0046] There are multiple reinforcing rib modules 5 , which are evenly distributed along the connection between the long strip-shaped second color plastic part 3 and the long strip-shaped first color plastic part 2 .
[0047] In this embodiment, a total of 7 reinforcing rib modules 5 are provided, which are evenly spaced and distributed at the connection between the long strip-shaped second color plastic portion 3 and the long strip-shaped first color plastic portion 2 .
[0048] In this embodiment, the U-shaped first color plastic part 1 and the long strip first color plastic part 2 are made of PCABS material.
[0049] The long strip-shaped second color plastic portion 3 is made of PC material.
[0050] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.
Claims
1. An injection molding intermediate structure of a U-shaped two-color injection molding decorative strip, the U-shaped two-color injection molding decorative strip comprising a U-shaped first color plastic part (1), a long strip of first color plastic part (2) and a long strip of second color plastic part (3), the long strip of first color plastic part (2) is connected to one end of the U-shaped first color plastic part (1), the long strip of second color plastic part (3) is connected to one side of the long strip of first color plastic part (2), characterized in that: The injection molding intermediate structure comprises an anti-deformation support structure (4), which comprises a first connecting rod (401), an angled connecting rod (402) and a second connecting rod (403), wherein the first connecting rod (401) and the second connecting rod (403) are arranged parallel to each other, and the angled connecting rod (402) respectively connects one end of the first connecting rod (401) and the second connecting rod (403) at the same angle to form a Z-shaped structure, and the ends of the first connecting rod (401) and the second connecting rod (403) that are away from each other are respectively connected to the inner sides of the two ends of the U-shaped first color plastic part (1).
2. The injection molding intermediate structure of a U-shaped two-color injection molding decorative strip according to claim 1, characterized in that: The angle between the angled connecting rod (402), the first connecting rod (401) and the second connecting rod (403) is within the range of 120 degrees to 160 degrees.
3. The injection molding intermediate structure of a U-shaped two-color injection molding decorative strip according to claim 1, characterized in that: A positioning protrusion (404) is provided in the middle of the angled connecting rod (402).
4. The injection molding intermediate structure of the U-shaped two-color injection molding decorative strip according to claim 3, characterized in that: The positioning protrusion (404) is a cylindrical structure.
5. The injection molding intermediate structure of a U-shaped two-color injection molding decorative strip according to claim 1, characterized in that: The connection point between the long strip-shaped second color plastic part (3) and the long strip-shaped first color plastic part (2) is a bottom plate structure (201), and the injection molding intermediate structure further comprises a plurality of reinforcing rib modules (5), each reinforcing rib module (5) being evenly distributed on the bottom plate structure (201) and respectively connected to the long strip-shaped second color plastic part (3) and the long strip-shaped first color plastic part (2).
6. The injection molding intermediate structure of a U-shaped two-color injection molding decorative strip according to claim 5, characterized in that: The reinforcing rib module (5) comprises a first reinforcing rib (501), a second reinforcing rib (502) and a guide protrusion (503); the first reinforcing rib (501) and the second reinforcing rib (502) are both mounted on the bottom plate structure (201) and respectively connect the long strip-shaped second color plastic part (3) and the long strip-shaped first color plastic part (2); the first reinforcing rib (501) and the second reinforcing rib (502) are both plate-shaped structures, and a U-shaped groove (504) is provided on one side close to the long strip-shaped second color plastic part (3); the guide protrusion (503) is arranged on the long strip-shaped second color plastic part (3), and is located between the long strip-shaped second color plastic part (3) and the long strip-shaped first color plastic part (2) in the horizontal direction, and is located at the top of the U-shaped groove (504) in the vertical direction.
7. The injection molding intermediate structure of a U-shaped two-color injection molding decorative strip according to claim 6, characterized in that: The bottom of the guide protrusion (503) is connected to the long strip of the second color plastic part (3), and the top is a V-shaped surface.
8. The injection molding intermediate structure of a U-shaped two-color injection molding decorative strip according to claim 6, characterized in that: The number of the reinforcing rib modules (5) is multiple and they are evenly distributed along the connection between the long strip-shaped second color plastic part (3) and the long strip-shaped first color plastic part (2).
9. The injection molding intermediate structure of a U-shaped two-color injection molding decorative strip according to claim 1, characterized in that: The U-shaped first color plastic part (1) and the long strip first color plastic part (2) are made of PCABS material.
10. The injection molding intermediate structure of a U-shaped two-color injection molding decorative strip according to claim 1, characterized in that: The long strip-shaped second color plastic part (3) is made of PC material.