Automobile double-color electroplated ornament and forming equipment and method

Abstract

The invention relates to the technical field, in particular to an automobile double-color electroplated ornament and forming equipment and method.The automobile double-color electroplated ornament comprises a workbench, a forming mold, an injection molding mechanism, a melt tank and a stirring mechanism, the stirring mechanism comprises a mounting frame, a driving motor, a first stirring rod, a second stirring rod, a driving wheel and a driven wheel, and the mounting frame is fixed to the top of the melt tank through bolts; mounting conditions are provided for the driving motor and the second stirring rod, the output end of the driving motor drives the first stirring rod to rotate clockwise to stir various materials in the melt tank, the driving wheel drives the driven wheel to rotate while the first stirring rod rotates, and the driven wheel rotates to drive the second stirring rod to rotate anticlockwise to stir various raw materials in the melt tank; two opposite-direction cyclones are formed through stirring of the first stirring rod and the second stirring rod, so that raw materials in the melt tank are mixed more uniformly, local aggregation of various materials is avoided, and the subsequent forming quality of the automobile double-color electroplated ornament is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of molding equipment technology, and in particular to a two-tone electroplated trim part for automobiles, molding equipment and method. Background Technology

[0002] With the rise of diversification and personalization in automotive interior and exterior trim, these components not only need to serve an aesthetic purpose but also offer personalized functionality. For example, exterior logo panels and illuminated bumpers require a two-tone effect, or even illuminated patterns to create a three-dimensional effect through polarization, enriching the decorative appeal. However, traditional processes typically involve laser engraving the logo after painting the material, followed by a protective clear coat. This method only produces a single-color effect, and the logo's edges are clearly visible, affecting the trim's aesthetics.

[0003] Currently, in the process of injection molding automotive two-tone electroplated trim parts using existing molding equipment, the additives such as color masterbatch, fillers (such as glass fiber), and lubricants in the injected plastic material are not mixed evenly with the substrate, or the additive particles are too large and cannot be fully dispersed, which easily leads to local aggregation (such as color masterbatch clusters causing color difference). This results in color differences in the subsequent two-tone electroplated trim parts, affecting the quality of the two-tone electroplated trim parts. Summary of the Invention

[0004] The purpose of this invention is to provide a two-tone electroplated trim for automobiles, molding equipment, and method, aiming to solve the problem that existing two-tone electroplated trim molding equipment for automobiles is prone to local aggregation of various plastic materials, resulting in different colors after the two-tone electroplated trim is formed.

[0005] To achieve the above objectives, in a first aspect, the present invention provides a molding equipment for automotive two-tone electroplated trim parts, comprising a worktable, a molding die, an injection molding mechanism, a molten material tank, and a stirring mechanism. The molding die is mounted on the top of the worktable, the molten material tank is disposed on both sides of the worktable, the injection molding mechanism is mounted between the molding die and the molten material tank, and the stirring mechanism is mounted on one side of the molten material tank. The stirring mechanism includes a mounting frame, a drive motor, a first stirring rod, a second stirring rod, a driving wheel, and a driven wheel. The mounting frame is fixedly connected to the molten material tank and located on the top of the molten material tank. The drive motor is fixedly connected to the mounting frame and located on one side of the mounting frame. The first stirring rod is fixedly connected to the output end of the drive motor and penetrates the molten material tank. The driving wheel is fixedly connected to the first stirring rod and located outside the first stirring rod. The second stirring rod is rotatably connected to the mounting frame and penetrates the molten material tank. The driven wheel is fixedly connected to the second stirring rod and meshes with the driving wheel, and is located outside the second stirring rod.

[0006] The melting tank includes a material tank and a heating plate. The material tank is assembled on both sides of the workbench, and the heating plate is assembled at the bottom of the material tank.

[0007] The heating plate includes a mounting plate and an electromagnet. The mounting plate is fixedly connected to the material tank and located at the bottom of the material tank. The electromagnet is detachably connected to the mounting plate and located on one side of the mounting plate.

[0008] The molding die includes a drive cylinder, a die body, and a buffer frame. The drive cylinder is fixedly connected to the worktable and located on both sides of the drive cylinder. The buffer frame is fixedly connected to the drive cylinder and located on one side of the drive cylinder. The die body is detachably connected to the buffer frame and located on the side of the buffer frame away from the drive cylinder.

[0009] The buffer frame includes two base plates and a spring damper. The two base plates are respectively mounted on one side of the drive cylinder and the mold body. The spring damper is fixedly connected to the two base plates and is located between the base plates.

[0010] Secondly, the present invention also provides a two-tone electroplated trim for automobiles, which is prepared and formed using the two-tone electroplated trim forming equipment described in the first aspect above, comprising a modified PC block and an electroplating layer, wherein the modified PC block is disposed on one side of the electroplating layer.

[0011] Thirdly, the present invention also provides a method for forming automotive two-tone electroplated trim parts, applied to the automotive two-tone electroplated trim part forming equipment as described in the first aspect, comprising the following steps;

[0012] The assembly molding mold and the injection molding mechanism follow the process set by the PLC to first inject the PC part. After completion, the injection molding mechanism will then inject the ABS electroplated part to obtain a two-color plastic blank.

[0013] The two-color plastic preform is subjected to degreasing, hydrophilic, roughening, neutralization and palladium water activation processes in sequence to obtain the treated two-color plastic preform.

[0014] The two-color plastic blank is immersed in the prepared adhesive-removing solution to remove the adhesive, and then the removed blank is immersed in a container containing plating solution to obtain a two-color electroplated automotive trim part.

[0015] This invention discloses a molding equipment for automotive two-tone electroplated trim parts. The worktable provides an installation location for other mechanisms. The injection molding mechanism injects molten material from the melting tank into the molding die in stages to form automotive two-tone electroplated trim parts. The stirring mechanism mixes various materials in the melting tank to prevent localized aggregation. Specifically, the mounting bracket is bolted to the top of the melting tank, providing installation conditions for the drive motor and the second stirring rod. The output of the drive motor drives the first stirring rod to rotate clockwise, stirring the various materials in the melting tank. Simultaneously, the driving wheel drives the driven wheel to rotate, which in turn drives the second stirring rod to rotate counterclockwise, stirring the various raw materials in the melting tank. The stirring of the first and second stirring rods creates two opposing cyclones, resulting in a more uniform mixture of raw materials in the melting tank, thus preventing localized aggregation of various materials and ensuring the molding quality of the subsequent automotive two-tone electroplated trim parts. This solves the problem in existing automotive two-tone electroplated trim part molding equipment where plastic materials easily aggregate, leading to color variations in the molded two-tone electroplated trim parts. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a two-tone electroplating trim molding equipment for automobiles provided by the present invention.

[0018] Figure 2 This is a schematic diagram of the structure of a two-color electroplated trim molding equipment for automobiles provided by the present invention from another perspective.

[0019] Figure 3 This is a schematic diagram of a two-tone electroplating trim molding equipment for automobiles provided by the present invention.

[0020] Figure 4 yes Figure 1 A magnified view of detail A.

[0021] Figure 5 This is a schematic diagram of a two-tone electroplated trim piece for automobiles provided by the present invention.

[0022] Figure 6 This is a flowchart of a method for forming two-tone electroplated automotive trim parts provided by the present invention.

[0023] In the diagram: 1-Workbench, 2-Molding mold, 3-Injection mechanism, 4-Melting tank, 5-Stirring mechanism, 6-Modified PC block, 7-Electroplated layer, 21-Drive cylinder, 22-Mold body, 23-Buffer frame, 41-Material tank, 42-Heating plate, 51-Mounting frame, 52-Drive motor, 53-First stirring rod, 54-Second stirring rod, 55-Drive wheel, 56-Driven wheel, 231-Base plate, 232-Spring damper, 421-Mounting plate, 422-Electromagnetic disk. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] Please see Figures 1 to 4 In a first aspect, the present invention provides a molding equipment for automotive two-tone electroplated trim parts, including a workbench 1, a molding die 2, an injection molding mechanism 3, a molten material tank 4, and a stirring mechanism 5. The molding die 2 is mounted on the top of the workbench 1, the molten material tank 4 is disposed on both sides of the workbench 1, the injection molding mechanism 3 is mounted between the molding die 2 and the molten material tank 4, and the stirring mechanism 5 is mounted on one side of the molten material tank 4. The stirring mechanism 5 includes a mounting frame 51, a drive motor 52, a first stirring rod 53, a second stirring rod 54, a drive wheel 55, and a driven wheel 56. The mounting frame 51 is fixed to the molten material tank 4. The first stirring rod 53 is fixedly connected to the output end of the driving motor 52 and passes through the melting tank 4. The driving wheel 55 is fixedly connected to the first stirring rod 53 and is located outside the first stirring rod 53. The second stirring rod 54 is rotatably connected to the mounting frame 51 and passes through the melting tank 4. The driven wheel 56 is fixedly connected to the second stirring rod 54 and meshes with the driving wheel 55, and is located outside the second stirring rod 54.

[0026] In this embodiment of the invention, the workbench 1 provides an installation location for the other mechanisms. The injection molding mechanism 3 is used to inject the molten material in the melting tank 4 into the molding die 2 in stages to injection mold automotive two-tone electroplated trim parts. The stirring mechanism 5 is used to stir and mix the various materials in the melting tank 4 to avoid local accumulation of various materials. Specifically, the mounting bracket 51 is fixed to the top of the melting tank 4 with bolts, providing installation conditions for the drive motor 52 and the second stirring rod 54. The output end of the drive motor 52 drives the first stirring rod 53 to rotate clockwise, stirring the various materials in the melting tank 4. While the stirring rod 53 rotates, the driving wheel 55 drives the driven wheel 56 to rotate. The rotation of the driven wheel 56 in turn drives the second stirring rod 54 to rotate counterclockwise, stirring the various raw materials in the melting tank 4. The stirring of the first stirring rod 53 and the second stirring rod 54 forms two cyclones in opposite directions, making the raw materials in the melting tank 4 more evenly mixed. This avoids the local aggregation of various materials and ensures the molding quality of subsequent automotive two-tone electroplated trim parts. This solves the problem in existing automotive two-tone electroplated trim part molding equipment where plastic materials are prone to local aggregation, leading to color differences in the subsequent two-tone electroplated trim parts.

[0027] Furthermore, the melting tank 4 includes a material tank 41 and a heating plate 42. The material tank 41 is assembled on both sides of the workbench 1, and the heating plate 42 is assembled on the bottom of the material tank 41.

[0028] In this embodiment of the invention, there are two material tanks 41, each with a feed inlet, for storing materials for injection-molded two-color electroplated automotive trim parts. The heating plate 42 is used to electromagnetically heat the materials in the material tanks 41, completely melting the materials to form a molten state.

[0029] Furthermore, the heating plate 42 includes a mounting plate 421 and an electric disk 422. The mounting plate 421 is fixedly connected to the material tank 41 and is located at the bottom of the material tank 41. The electric disk 422 is detachably connected to the mounting plate 421 and is located on one side of the mounting plate 421.

[0030] In this embodiment of the invention, the mounting plate 421 is welded and fixed to the bottom of the material tank 41, and the electromagnet 422 is used to electromagnetically heat the material in the material tank 41 to completely melt the material and form a molten state.

[0031] Furthermore, the molding die 2 includes a drive cylinder 21, a die body 22, and a buffer frame 23. The drive cylinder 21 is fixedly connected to the worktable 1 and is located on both sides of the drive cylinder 21. The buffer frame 23 is fixedly connected to the drive cylinder 21 and is located on one side of the drive cylinder 21. The die body 22 is detachably connected to the buffer frame 23 and is located on the side of the buffer frame 23 away from the drive cylinder 21.

[0032] In this embodiment of the invention, the output ends of the two sets of driving cylinders 21 extend, driving the two mold bodies 22 to move closer to each other and close the mold, thus enabling the injection molding of automotive two-tone electroplated trim parts. After the automotive two-tone electroplated trim parts are injection molded, the output ends of the two sets of driving cylinders 21 extend and retract, causing the two mold bodies 22 to move away from each other and open the mold, realizing the automatic demolding of the automotive two-tone electroplated trim parts. The buffer frame 23 is set to buffer the force of the driving cylinders 21 when the two mold bodies 22 close the mold, so as to avoid the driving cylinders 21 from exerting too much force and damaging the mold bodies 22.

[0033] Furthermore, the buffer frame 23 includes two base plates 231 and a spring damper 232. The two base plates are respectively mounted on one side of the drive cylinder 21 and the mold body 22. The spring damper is fixedly connected to the two base plates 231 and is located between the base plates 231.

[0034] In this embodiment of the invention, the base plate 231 is used for mounting and connecting the spring damper 232, the drive cylinder 21 and the mold body 22. The spring damper 232 is used to buffer the force of the drive cylinder 21 to prevent the force of the drive cylinder 21 from being too large and damaging the mold body 22.

[0035] Please see Figure 5 Secondly, the present invention also provides a two-tone electroplated trim for automobiles, which is prepared and formed using the two-tone electroplated trim forming equipment described in the first aspect above, including a modified PC block 6 and an electroplated layer 7, wherein the modified PC block 6 is disposed on one side of the electroplated layer 7.

[0036] In this embodiment of the invention, the modified PC block 6 is UV resistant and can be prevented from being corroded during the chromium plating process. The modified PC block 6 extends into the electroplated layer 7 by a maximum of 0.3 mm, increasing the sealing distance by 0.3 mm to prevent the electroplated layer 7 from overflowing into the transparent area and solving the problem of poor appearance.

[0037] Please see Figure 6 Thirdly, the present invention also provides a method for forming automotive two-tone electroplated trim parts, applied to the automotive two-tone electroplated trim part forming equipment as described in the first aspect, comprising the following steps;

[0038] S1 assembly molding mold 2, injection molding mechanism 3 according to the process set by PLC, first injection mold the PC part, after completion, injection molding mechanism 3 then injection molds the ABS electroplated part to obtain a two-color plastic blank.

[0039] In this embodiment of the invention, the output ends of the two sets of drive cylinders 21 extend, driving the two mold bodies 22 to move closer to each other and close the mold. The injection molding mechanism 3 first injects the PC part according to the process set by the PLC. After completion, the injection molding mechanism 3 then injects the ABS electroplated part. After the automotive two-tone electroplated trim is injected, the output ends of the two sets of drive cylinders 21 extend and retract, driving the two mold bodies 22 to move away from each other and open the mold, realizing the automatic demolding of the automotive two-tone electroplated trim.

[0040] S2 sequentially performs degreasing, hydrophilic, roughening, neutralization and palladium water activation processes on the two-color plastic preform to obtain the treated two-color plastic preform;

[0041] In this embodiment of the invention, the blank is completely immersed in a degreasing tank, supplemented by ultrasonic vibration (power 200-500W), to enhance the removal of oil stains through sonic impact; or spray degreasing is used (suitable for blanks with complex structures, ensuring that oil stains in crevices are removed). After degreasing, it is immediately rinsed with running water 2-3 times to thoroughly remove residual degreasing agent from the surface and prevent it from being carried into the next process. A dilute sulfuric acid solution (concentration 5%-10%) or surfactant solution is used for immersion treatment. The solution can be slightly stirred, and the surface of the blank is observed to ensure that the solution is evenly adhered (hydrophilic qualification standard: the water film on the surface is continuous without breaks). The blank is rinsed with water 1-2 times to remove residual hydrophilic liquid. A chromic acid-sulfuric acid mixture (chromic anhydride 200-400g / L, sulfuric acid 400-600g / L) is used for immersion treatment. During this period, the blank is turned over periodically to ensure that the two-color junction, deep cavities, and other parts are in full contact with the roughening solution; local overheating of the solution is avoided (a constant temperature can be maintained through the tank temperature control system). First, rinse 3-4 times with running water. Then, reduce the residual hexavalent chromium with sodium sulfite solution (50-100 g / L) until no yellow residue remains in the solution. Finally, rinse with water until neutral (pH 6-7). Next, soak the part in a dilute sodium hydroxide solution (5-10 g / L) or sodium carbonate solution (10-20 g / L), stirring gently to ensure thorough neutralization. Rinse 2-3 times with running water to completely remove any residual neutralizing agent and avoid affecting the stability of the activation solution. Soak the part in a colloidal palladium solution (palladium chloride 0.5-2 g / L, hydrochloric acid 10-30 mL / L, tin ions as a stabilizer, forming a palladium-tin colloid) or an ionic palladium solution, stirring gently (to avoid uneven palladium concentration). The part should be completely submerged; for complex structures, ensure that the internal cavities and gaps are filled with solution. Rinse 2-3 times with deionized water to remove free palladium and tin ions from the surface.

[0042] S3. The two-color plastic blank is immersed in the prepared adhesive-removing solution to remove the adhesive, and then the removed blank is immersed in a container containing plating solution to obtain a two-color electroplated automotive trim part.

[0043] In this embodiment of the invention, a descaling solution is used to prevent plating on the PC surface of the two-color plastic preform. Different concentrations of the descaling solution can be used depending on the material of the structural surface of the ABS part to be plated. The plating solution can be selected from copper plating solution, nickel plating solution, chromium plating solution, etc., as required.

[0044] The above description is merely a preferred embodiment of the two-tone electroplated trim, molding equipment, and method for automobiles according to the present invention. It should not be construed as limiting the scope of the present invention. Those skilled in the art can understand that implementing all or part of the above embodiments and making equivalent changes in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A molding equipment for automotive two-tone electroplated trim parts, characterized in that... ； The device includes a workbench, a molding die, an injection molding mechanism, a molten material tank, and a stirring mechanism. The molding die is mounted on the top of the workbench, the molten material tank is located on both sides of the workbench, the injection molding mechanism is mounted between the molding die and the molten material tank, and the stirring mechanism is mounted on one side of the molten material tank. The stirring mechanism includes a mounting frame, a drive motor, a first stirring rod, a second stirring rod, a driving wheel, and a driven wheel. The mounting frame is fixedly connected to the molten material tank and located at the top of the molten material tank. The drive motor is fixedly connected to the mounting frame and located on one side of the mounting frame. The first stirring rod is fixedly connected to the output end of the drive motor and passes through the molten material tank. The driving wheel is fixedly connected to the first stirring rod and located outside the first stirring rod. The second stirring rod is rotatably connected to the mounting frame and passes through the molten material tank. The driven wheel is fixedly connected to the second stirring rod and meshes with the driving wheel, and is located outside the second stirring rod.

2. The automotive two-tone electroplating trim molding equipment as described in claim 1, characterized in that... ； The melting tank includes a material tank and a heating plate. The material tank is mounted on both sides of the workbench, and the heating plate is mounted on the bottom of the material tank.

3. The automotive two-tone electroplating trim molding equipment as described in claim 2, characterized in that... ； The heating plate includes a mounting plate and an electromagnet. The mounting plate is fixedly connected to the material tank and located at the bottom of the material tank. The electromagnet is detachably connected to the mounting plate and located on one side of the mounting plate.

4. The automotive two-tone electroplating trim molding equipment as described in claim 1, characterized in that... ； The molding die includes a drive cylinder, a die body, and a buffer frame. The drive cylinder is fixedly connected to the worktable and located on both sides of the drive cylinder. The buffer frame is fixedly connected to the drive cylinder and located on one side of the drive cylinder. The die body is detachably connected to the buffer frame and located on the side of the buffer frame away from the drive cylinder.

5. The automotive two-tone electroplating trim molding equipment as described in claim 4, characterized in that... ； The buffer frame includes two base plates and a spring damper. The two base plates are respectively mounted on one side of the drive cylinder and the mold body. The spring damper is fixedly connected to the two base plates and is located between the base plates.

6. A two-tone electroplated trim part for automobiles, manufactured using the two-tone electroplated trim part molding equipment as described in any one of claims 1-5, characterized in that... ； It includes a modified PC block and an electroplated layer, wherein the modified PC block is disposed on one side of the electroplated layer.

7. A method for forming automotive two-tone electroplated trim parts, applied to the automotive two-tone electroplated trim part forming equipment as described in any one of claims 1-5, characterized in that, Includes the following steps; The assembly molding mold and the injection molding mechanism follow the process set by the PLC to first inject the PC part. After completion, the injection molding mechanism will then inject the ABS electroplated part to obtain a two-color plastic blank. The two-color plastic preform is subjected to degreasing, hydrophilic, roughening, neutralization and palladium water activation processes in sequence to obtain the treated two-color plastic preform. The two-color plastic blank is immersed in the prepared adhesive-removing solution to remove the adhesive, and then the removed blank is immersed in a container containing plating solution to obtain a two-color electroplated automotive trim part.

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