Multi-cavity injection mold for automobile electroplated decorative strip with split cavity structure

Abstract

The utility model belongs to mould technical field relates to a kind of automobile electroplating decorative strip multi-cavity injection mould with split type cavity structure.The utility model, including decorative strip forming lower mould and decorative strip forming upper mould, decorative strip forming upper mould is equipped with injection molded part and two insert upper positioning chamber, and the insert upper positioning chamber is equipped with detachable decorative strip side auxiliary forming assembly.The utility model in use, through detachable decorative strip side auxiliary forming assembly, especially the design of decorative strip side auxiliary forming insert, can accurately shape the arc side of decorative strip, and cooperate with decorative strip upper end forming part and lower end forming part, form smooth transition surface, ensure the accuracy of decorative strip overall shape and appearance quality.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology and relates to a multi-cavity injection mold for automotive electroplated decorative strips with a split cavity structure. Background Technology

[0002] In the automotive manufacturing industry, electroplated decorative strips are key components that enhance the texture and aesthetics of a car's appearance, and their production quality and efficiency are of paramount importance. Traditional injection molds for automotive electroplated decorative strips suffer from numerous problems. For instance, for decorative strips with complex shapes, especially those with curved sides or other special structures, ordinary molds struggle to achieve precise molding, easily leading to unnatural edge transitions and affecting the overall appearance. Furthermore, in multi-cavity injection molding, uneven material distribution between cavities results in variations in the quality of the decorative strips produced from different cavities, leading to a high scrap rate. Additionally, during long-term use, some easily damaged parts of the mold are difficult to replace individually; once damaged, the entire mold must be replaced, significantly increasing production costs. Therefore, there is an urgent need to design a multi-cavity injection mold for automotive electroplated decorative strips with a split-cavity structure that can overcome these shortcomings.

[0003] To overcome the shortcomings of existing technologies, people have continuously explored and proposed various solutions. For example, a Chinese patent discloses an injection mold for manufacturing automotive trim strips [Application No.: 201510498267.2], which has a panel, a die fixing plate, a die, a punch, a punch fixing plate, an ejector plate, a face pin plate, a bottom pin plate, and a base plate arranged from top to bottom. A wear-resistant plate is provided between the contact sidewalls of the die and the die fixing plate, and the included angle between the sidewall of the die and the vertical plane is 2° to 4°. Multiple ejection mechanisms for ejecting the die are installed on the face pin plate and the bottom pin plate. Multiple return mechanisms for returning the die fixing plate are installed on the face pin plate, and multiple return mechanisms for returning the punch are also installed on the base plate. Heat insulation plates are provided on the upper surface of the panel and the lower surface of the base plate. However, this solution is still difficult to accurately mold when dealing with trim strips with curved side structures, which can easily lead to unnatural transitions at the product edges, affecting the appearance quality. In addition, some easily damaged parts are difficult to replace individually, resulting in high production costs. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned problems by providing a multi-cavity injection mold for automotive electroplated decorative strips with a split cavity structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A multi-cavity injection mold for automotive electroplated decorative strips with a split cavity structure includes a lower mold for forming the decorative strip and an upper mold for forming the decorative strip. The upper mold for forming the decorative strip has an injection molded part and two upper positioning chambers for inserts. The upper positioning chambers for inserts have detachable auxiliary molding components for the side of the decorative strip. The upper mold for forming the decorative strip also has an upper end forming part for the decorative strip. The lower mold for forming the decorative strip has a lower positioning chamber for inserts and a lower end forming part for the decorative strip. The lower positioning chamber for inserts corresponds to and is shaped with the detachable auxiliary molding components for the side of the decorative strip. The upper end forming part and the lower end forming part are respectively shaped with the detachable auxiliary molding components for the side of the decorative strip. A material diversion section connected to the injection molded part is provided between the lower mold for forming the decorative strip and the upper mold for forming the decorative strip.

[0007] In the above-mentioned multi-cavity injection mold for automotive electroplated decorative strips with a split cavity structure, the detachable decorative strip side auxiliary molding component includes a decorative strip side auxiliary molding insert disposed in the positioning cavity of the insert. The two decorative strip side auxiliary molding inserts are symmetrically arranged along the center line of the upper mold for molding the decorative strip, and the inner side of the decorative strip side auxiliary molding insert has a decorative strip arc edge molding surface.

[0008] In the above-mentioned multi-cavity injection mold for automotive electroplated decorative strips with a split cavity structure, the arc-shaped edge forming surface of the decorative strip is connected to the upper forming part of the decorative strip.

[0009] In the above-mentioned multi-cavity injection mold for automotive electroplated decorative strips with a split cavity structure, the upper end forming part of the decorative strip includes two upper end forming surfaces of the decorative strip disposed in the upper mold of the decorative strip forming part. When the upper end forming surface of the decorative strip is in close contact with the arc-shaped edge forming surface of the decorative strip, a smooth transition surface is formed between the upper end forming surface of the decorative strip and the arc-shaped edge forming surface of the decorative strip.

[0010] In the above-mentioned multi-cavity injection mold for automotive electroplated decorative strips with a split cavity structure, the lower end forming part of the decorative strip includes two lower end forming surfaces of the decorative strip disposed in the lower mold of the decorative strip forming part, and the lower end forming surfaces of the decorative strip are directly opposite to the upper end forming surfaces of the decorative strip.

[0011] In the above-mentioned multi-cavity injection mold for automotive electroplated decorative strips with a split cavity structure, the lower end of the auxiliary molding insert on the side of the decorative strip is engaged with the lower positioning cavity of the insert, and the inner side of the auxiliary molding insert on the side of the decorative strip forms a sealing surface with the inner side of the lower positioning cavity of the insert.

[0012] In the above-mentioned multi-cavity injection mold for automotive electroplated decorative strips with a split cavity structure, the injection molded part includes several injection channels disposed in the upper mold for forming the decorative strip, and the bottom of the injection channels is connected to the material distribution section.

[0013] In the above-mentioned multi-cavity injection mold for automotive electroplated decorative strips with a split cavity structure, the diameter of the injection channel gradually decreases from top to bottom.

[0014] In the above-mentioned multi-cavity injection mold for automotive electroplated decorative strips with a split cavity structure, the material diversion part includes an upper diversion channel disposed in the upper mold for forming the decorative strip, and a lower diversion channel disposed in the lower mold for forming the decorative strip. The upper diversion channel is connected to the bottom of the injection channel. When the upper mold for forming the decorative strip and the lower mold for forming the decorative strip are in close contact, the upper diversion channel and the lower diversion channel close together to form a complete diversion channel.

[0015] In the above-mentioned multi-cavity injection mold for automotive electroplated decorative strips with a split cavity structure, the bottom of the upper mold for forming the decorative strip is provided with a mold closing protrusion, and the lower mold for forming is provided with a mold closing cavity. The mold closing protrusion and the mold closing cavity are positioned correspondingly and matched in shape.

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] 1. In use, this utility model, through the design of the detachable decorative strip side auxiliary forming component, especially the decorative strip side auxiliary forming inlay, can accurately shape the arc-shaped side of the decorative strip, and cooperate with the upper and lower forming parts of the decorative strip to form a smooth transition surface, ensuring the accuracy of the overall shape and appearance quality of the decorative strip.

[0018] 2. This utility model, through the design of the material diversion section, includes an upper diversion channel and a lower diversion channel, forming a complete diversion channel when the mold is closed. This enables the uniform distribution of injection molding raw materials among multiple cavities, ensuring that the decorative strips produced in each cavity are of consistent quality and effectively reducing the scrap rate.

[0019] 3. The insert of the detachable decorative strip side auxiliary molding component in this utility model adopts a replaceable design. When the insert needs to be replaced due to wear or damage, it is not necessary to replace the entire mold. Only the corresponding insert needs to be replaced, which greatly reduces the maintenance cost and replacement cycle of the mold and improves production efficiency.

[0020] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a cross-sectional view of the present invention.

[0023] Figure 3 This is an exploded schematic diagram of this utility model.

[0024] Figure 4 This is an exploded view of the present invention from another direction.

[0025] Figure 5 This is a schematic diagram of the structure of the auxiliary molding inlay on the side of the decorative strip.

[0026] In the diagram: 1. Decorative strip forming lower mold; 2. Decorative strip forming upper mold; 3. Injection part; 4. Insert upper positioning chamber; 5. Detachable decorative strip side auxiliary forming component; 6. Decorative strip upper forming part; 7. Insert lower positioning chamber; 8. Decorative strip lower forming part; 9. Decorative strip side auxiliary forming insert; 10. Decorative strip arc edge forming surface; 11. Decorative strip upper forming surface; 12. Decorative strip lower forming surface; 13. Injection channel; 14. Upper flow channel; 15. Lower flow channel; 16. Mold closing protrusion; 17. Mold closing cavity; 18. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] like Figure 1-5 As shown, a multi-cavity injection mold for automotive electroplated decorative strips with a split cavity structure includes a lower mold 1 for forming decorative strips and an upper mold 2 for forming decorative strips. The upper mold 2 contains an injection molded part 3 and two upper positioning chambers 4 for inserts. The upper positioning chambers 4 for inserts contain detachable auxiliary molding components for the side of the decorative strip 5. The upper mold 2 for forming decorative strips also contains an upper end forming part 6 for the decorative strip. The lower mold 1 for forming decorative strips contains a lower positioning chamber 7 for inserts and a lower end forming part 8 for the decorative strip. The lower positioning chamber 7 for inserts corresponds to and is shaped to the detachable auxiliary molding components for the side of the decorative strip 5. The upper end forming part 6 and the lower end forming part 8 for the decorative strip are respectively shaped to the detachable auxiliary molding components for the side of the decorative strip 5. A material diversion part 9, which communicates with the injection molded part 3, is provided between the lower mold 1 and the upper mold 2 for forming decorative strips.

[0029] In this embodiment, the upper mold 2 for forming the decorative strip integrates an injection molded part 3 and two upper positioning chambers 4 for inserts. The upper positioning chambers 4 provide installation space for the detachable decorative strip side auxiliary forming component 5. The two are stably assembled through shape adaptation. At the same time, the upper mold 2 for forming the decorative strip also has an upper end forming part 6 for forming the upper end structure of the decorative strip. The lower mold 1 for forming the decorative strip has a lower positioning chamber 7 for inserts and a lower end forming part 8 for the decorative strip. The lower positioning chamber 7 for inserts corresponds precisely to the position of the detachable decorative strip side auxiliary forming component 5, and their shapes are perfectly adapted to ensure the detachable decorative strip side auxiliary forming component 5. The molding component 5 can be stably inserted and positioned when the mold is closed. The upper molding part 6 and the lower molding part 8 of the decorative strip are respectively matched with the shape of the detachable decorative strip side auxiliary molding component 5, and together they form the molding cavity of the decorative strip. In addition, a material diversion part 9 connected to the injection molded part 3 is provided between the lower molding mold 1 and the upper molding mold 2 of the decorative strip, which is used to evenly transport the injection molding material from the injection molded part 3 to the cavity. Through the precise cooperation of each component, a complete multi-cavity injection molding system is constructed, which provides basic structural support for the efficient and high-quality molding of the decorative strip and solves the problems of fixed cavity structure and poor versatility of traditional molds.

[0030] Combination Figure 1-5 As shown, the detachable decorative strip side auxiliary forming component 5 includes a decorative strip side auxiliary forming insert 10 disposed in the positioning chamber 4 of the insert. Two decorative strip side auxiliary forming inserts 10 are symmetrically arranged along the center line of the upper mold 2 for forming the decorative strip. The inner side of the decorative strip side auxiliary forming insert 10 has a decorative strip arc edge forming surface 11.

[0031] Specifically, the core component of the detachable decorative strip side auxiliary molding assembly 5 is the decorative strip side auxiliary molding insert 10, which is installed in the positioning chamber 4 on the insert. It is initially fixed by the inner wall of the positioning chamber 4 on the insert. The two decorative strip side auxiliary molding inserts 10 are symmetrically arranged along the center line of the upper mold 2 for molding the decorative strip. This symmetrical structure ensures the consistency of the decorative strips on both sides during multi-cavity molding. The inner side of the decorative strip side auxiliary molding insert 10 has a decorative strip arc-shaped edge molding surface 11. This molding surface is in direct contact with the injection molding material and is used to shape the arc-shaped side structure of the decorative strip. The detachable design makes the insert easy to replace and maintain. The symmetrical structure ensures the consistency of product molding. The arc-shaped edge molding surface realizes the precise molding of the complex arc structure of the decorative strip and solves the problem that traditional molds are difficult to mold complex sides.

[0032] The curved edge forming surface 11 of the decorative strip is connected to the upper forming part 6 of the decorative strip.

[0033] In this embodiment, the curved edge forming surface 11 of the decorative strip is connected to the upper forming part 6 of the decorative strip. In the mold-closed state, the connection between the two is seamlessly connected to form a continuous forming surface. The curved edge forming surface 11 of the decorative strip is responsible for forming the curved side of the decorative strip, and the upper forming part 6 of the decorative strip is responsible for forming the upper plane or specific shape of the decorative strip. The connection between the two ensures the integrity of the transition part between the side and the upper part of the decorative strip, avoids the defects of parting lines or unevenness in the transition part between the side and the upper part of the decorative strip, and improves the appearance quality and structural integrity of the product.

[0034] Combination Figure 3 , Figure 4 As shown, the upper end forming part 6 of the decorative strip includes two upper end forming surfaces 12 of the decorative strip disposed in the upper mold 2 of the decorative strip. When the upper end forming surface 12 of the decorative strip is in close contact with the curved edge forming surface 11 of the decorative strip, a smooth transition surface is formed between the upper end forming surface 12 of the decorative strip and the curved edge forming surface 11 of the decorative strip.

[0035] In this embodiment, when the upper forming surface 12 of the decorative strip is in close contact with the curved edge forming surface 11 of the decorative strip, a smooth transition surface is formed between the two. That is, through precision machining, it is ensured that there are no steps or sharp corners at the connection part of the two forming surfaces, realizing a natural transition from the curved edge to the upper surface. This smooth transition structure is directly reflected on the formed decorative strip, making the appearance of the decorative strip smoother. It solves the problem of the hard transition of the edges and corners of the decorative strip and the easy generation of burrs when forming with traditional molds, ensuring the smoothness and aesthetics of the decorative strip surface and improving the texture of the product.

[0036] The lower end forming part 8 of the decorative strip includes two lower end forming surfaces 13 of the decorative strip disposed in the lower mold 1 of the decorative strip forming, and the lower end forming surfaces 13 of the decorative strip are directly opposite to the upper end forming surfaces 12 of the decorative strip.

[0037] In this embodiment, the upper end forming surface 12 and the lower end forming surface 13 of the decorative strip form the main body of the decorative strip from the upper and lower sides, respectively, and together with the curved edge forming surface 11 of the decorative strip, they form the complete cross-sectional shape of the decorative strip.

[0038] Combination Figure 3-4 As shown, the lower end of the auxiliary molding insert 10 on the side of the decorative strip is engaged with the lower positioning chamber 7 of the insert, and the inner side of the auxiliary molding insert on the side of the decorative strip and the inner side of the lower positioning chamber 7 of the insert form a sealing surface.

[0039] In this embodiment, the lower end of the auxiliary molding insert 10 on the side of the decorative strip is engaged with the lower positioning chamber 7 of the insert. The inner wall of the lower positioning chamber 7 of the insert is provided with a groove or protrusion structure that matches the lower end of the auxiliary molding insert 10 on the side of the decorative strip. The lower end of the insert is fixed by engaging. At the same time, the inner side of the auxiliary molding insert on the side of the decorative strip and the inner side of the lower positioning chamber 7 of the insert form a sealing surface. That is, the contact part of the two is precision ground to ensure that the raw material will not leak from the contact gap under the action of injection pressure. The engaging structure enhances the stability of the insert during the molding process and prevents the insert from shifting due to injection pressure. The sealing surface design avoids raw material leakage, reduces defects such as flash and material shortage, and improves the product qualification rate and the service life of the mold.

[0040] The injection molded part 3 includes a plurality of injection channels 14 disposed in the upper mold 2 for forming decorative strips, and the bottom of the injection channels 14 is connected to the material diversion section 9.

[0041] In this embodiment, the upper end of the injection channel 14 is connected to the outlet of the injection molding machine, and the bottom is connected to the material distribution section 9 to form a material conveying channel. The number of injection channels 14 matches the number of cavities or the distribution requirements to ensure that the material can smoothly enter the distribution through the channel. This realizes the directional conveying of injection molding material from the injection molding machine to the mold distribution section, providing a channel guarantee for the uniform distribution of subsequent material and solving the problem of chaotic material conveying path in traditional molds.

[0042] Combination Figure 1-2 As shown, the diameter of the injection channel 14 gradually decreases from top to bottom.

[0043] In this embodiment, the diameter of the injection channel 14 gradually decreases from top to bottom, forming a conical channel structure. This structure causes the pressure of the injection molding material to gradually increase and the flow rate to gradually stabilize during the flow process. This avoids the material from generating eddies or stagnating in the channel, improves the flow efficiency and stability of the material in the channel, reduces pressure loss during the material flow process, and ensures that the material can enter the material distribution section quickly and evenly, thus solving the problem of unstable material flow in traditional equal-diameter channels.

[0044] Combination Figure 1-5 As shown, the material diversion section 9 includes an upper diversion channel 15 disposed in the upper mold 2 for forming decorative strips, and a lower diversion channel 16 disposed in the lower mold 1 for forming decorative strips. The upper diversion channel 15 is connected to the bottom of the injection channel 14. When the upper mold 2 and the lower mold 1 for forming decorative strips are in close contact, the upper diversion channel 15 and the lower diversion channel 16 close together to form a complete diversion channel.

[0045] In this embodiment, the material distribution section 9 consists of two parts: an upper distribution channel 15 is disposed in the upper mold 2 for forming decorative strips, and a lower distribution channel 16 is disposed in the lower mold 1 for forming decorative strips. The upper end of the upper distribution channel 15 is connected to the bottom of the injection channel 14 and receives the raw material from the injection channel. When the upper mold 2 and the lower mold 1 for forming decorative strips are tightly closed, the cross sections of the upper distribution channel 15 and the lower distribution channel 16 cooperate with each other to form a complete distribution channel. The end of the distribution channel is connected to each cavity, so as to evenly distribute the raw material to each cavity. The complete distribution channel formed after the mold is closed realizes the uniform distribution of raw material, ensuring that the amount and speed of raw material filling in each cavity are consistent during multi-cavity molding, and solving the problem of product quality differences caused by uneven distribution of raw material during multi-cavity molding of traditional molds.

[0046] Combination Figure 1-4 As shown, the upper mold 2 for forming decorative strips has a mold closing protrusion 17 at the bottom, and the lower mold 1 for forming has a mold closing cavity 18. The mold closing protrusion 17 and the mold closing cavity 18 are positioned correspondingly and have matching shapes.

[0047] In this embodiment, the upper mold 2 for forming decorative strips has a mold-closing protrusion 17 at its bottom, and the lower mold 1 for forming decorative strips has a mold-closing cavity 18. The shape and size of the mold-closing protrusion 17 are perfectly matched with the mold-closing cavity 18, and their positions correspond one-to-one. During the mold-closing process, the mold-closing protrusion 17 gradually embeds into the mold-closing cavity 18. Through the interlocking of the protrusion and the cavity, the upper and lower molds are precisely positioned, avoiding offset during mold closing. This ensures the alignment accuracy of the upper and lower molds during mold closing, reduces defects such as cavity size errors and flash caused by mold closing deviations, and improves the dimensional accuracy of the product and the service life of the mold.

[0048] The working principle of this utility model is as follows:

[0049] During injection molding, the upper mold 2 and lower mold 1 of the decorative strip are closed under the drive of the mold closing mechanism. The mold closing protrusion 17 is precisely embedded into the mold closing cavity 18, achieving precise positioning of the upper and lower molds. At the same time, the lower end of the auxiliary molding insert 10 on the side of the decorative strip is inserted into the lower positioning cavity 7 of the insert, and the inner side of the insert and the inner side of the lower positioning cavity 7 form a sealing surface. The upper molding surface 12 of the decorative strip and the arc-shaped edge molding surface 11 of the decorative strip are closely attached to form a smooth transition surface. All molding surfaces together form a closed molding cavity. The injection molding material is injected into the injection channel 14 under pressure by the injection molding machine. Because the diameter of the channel is larger at the top and smaller at the bottom, the material is subjected to pressure. The material distribution section 9 is used to stabilize the flow of materials. The upper distribution channel 15 and the lower distribution channel 16 are combined to form a complete distribution channel, which evenly distributes the raw material to each cavity. After the raw material is filled in the cavity, it is cooled and formed under the constraint of each forming surface to form a decorative strip with a precise arc-shaped side and a smooth transition surface. After injection molding is completed, the upper and lower molds are separated. The formed decorative strip moves with the lower or upper mold and is demolded by the ejection mechanism. When the auxiliary forming insert 10 on the side of the decorative strip is worn due to long-term use, it can be directly removed and replaced from the positioning chamber 4 on the insert without replacing the entire mold, thus reducing maintenance costs.

[0050] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model.

[0051] Although this document frequently uses terms such as decorative strip forming lower mold 1, decorative strip forming upper mold 2, injection molded part 3, insert upper positioning chamber 4, detachable decorative strip side auxiliary forming component 5, decorative strip upper end forming part 6, insert lower positioning chamber 7, decorative strip lower end forming part 8, material diversion part 9, decorative strip side auxiliary forming insert 10, decorative strip arc edge forming surface 11, decorative strip upper end forming surface 12, decorative strip lower end forming surface 13, injection channel 14, upper flow channel 15, lower flow channel 16, mold closing protrusion 17, mold closing cavity 18, etc., the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A multi-cavity injection mold for automotive electroplated decorative strips with a split cavity structure, comprising a lower mold (1) for forming the decorative strip and an upper mold (2) for forming the decorative strip, characterized in that, The upper mold (2) for forming the decorative strip is provided with an injection molded part (3) and two upper positioning chambers (4) for inserts. The upper positioning chamber (4) for inserts is provided with a detachable auxiliary molding component (5) for the side of the decorative strip. The upper mold (2) for forming the decorative strip is also provided with an upper molding part (6) for the upper end of the decorative strip. The lower mold (1) for forming the decorative strip is provided with a lower positioning chamber (7) for inserts and a lower molding part (8) for the lower end of the decorative strip. The lower positioning chamber (7) for inserts is positioned and matched with the detachable auxiliary molding component (5) for the side of the decorative strip. The upper molding part (6) and the lower molding part (8) for the decorative strip are matched with the shape of the detachable auxiliary molding component (5) for the side of the decorative strip. A material diversion part (9) connected to the injection molded part (3) is provided between the lower mold (1) and the upper mold (2) for forming the decorative strip.

2. The multi-cavity injection mold for automotive electroplated decorative strips with a split cavity structure according to claim 1, characterized in that, The detachable decorative strip side auxiliary forming component (5) includes a decorative strip side auxiliary forming insert (10) disposed in the positioning chamber (4) of the insert. Two decorative strip side auxiliary forming inserts (10) are symmetrically arranged along the center line of the decorative strip forming upper mold (2). The inner side of the decorative strip side auxiliary forming insert (10) has a decorative strip arc edge forming surface (11).

3. The multi-cavity injection mold for automotive electroplated decorative strips with a split cavity structure according to claim 2, characterized in that, The curved edge forming surface (11) of the decorative strip is connected to the upper forming part (6) of the decorative strip.

4. The multi-cavity injection mold for automotive electroplated decorative strips with a split cavity structure according to claim 3, characterized in that, The upper end forming part (6) of the decorative strip includes two upper end forming surfaces (12) of the decorative strip disposed in the upper mold (2) of the decorative strip. When the upper end forming surface (12) of the decorative strip is in close contact with the curved edge forming surface (11) of the decorative strip, a smooth transition surface is formed between the upper end forming surface (12) of the decorative strip and the curved edge forming surface (11) of the decorative strip.

5. The multi-cavity injection mold for automotive electroplated decorative strips with a split cavity structure according to claim 3 or 4, characterized in that, The lower end forming part (8) of the decorative strip includes two lower end forming surfaces (13) of the decorative strip disposed in the lower mold (1) of the decorative strip forming part, and the lower end forming surfaces (13) of the decorative strip are directly opposite to the upper end forming surfaces (12) of the decorative strip.

6. The multi-cavity injection mold for automotive electroplated decorative strips with a split cavity structure according to claim 5, characterized in that, The lower end of the auxiliary molding insert (10) on the side of the decorative strip is engaged with the lower positioning chamber (7) of the insert, and the inner side of the auxiliary molding insert on the side of the decorative strip forms a sealing surface with the inner side of the lower positioning chamber (7).

7. The multi-cavity injection mold for automotive electroplated decorative strips with a split cavity structure according to claim 1, characterized in that, The injection molded part (3) includes a plurality of injection channels (14) disposed in the upper mold (2) for forming decorative strips, and the bottom of the injection channels (14) is connected to the material diversion part (9).

8. The multi-cavity injection mold for automotive electroplated decorative strips with a split cavity structure according to claim 7, characterized in that, The diameter of the injection channel (14) gradually decreases from top to bottom.

9. The multi-cavity injection mold for automotive electroplated decorative strips with a split cavity structure according to claim 7 or 8, characterized in that, The material diversion section (9) includes an upper diversion channel (15) disposed in the upper mold (2) for forming decorative strips, and a lower diversion channel (16) disposed in the lower mold (1) for forming decorative strips. The upper diversion channel (15) is connected to the bottom of the injection channel (14). When the upper mold (2) for forming decorative strips and the lower mold (1) for forming decorative strips are in close contact, the upper diversion channel (15) and the lower diversion channel (16) are closed to form a complete diversion channel.

10. The multi-cavity injection mold for automotive electroplated decorative strips with a split cavity structure according to claim 1, characterized in that, The upper mold (2) for forming the decorative strip is provided with a mold closing protrusion (17) at the bottom, and the lower mold (1) for forming has a mold closing cavity (18). The mold closing protrusion (17) and the mold closing cavity (18) are positioned and matched in shape.

Images