Molding die for driver's platform with split color gel coat

Abstract

The utility model discloses a driver platform forming die with color separation glue dress belongs to the field of railway vehicle technology. Including base mould and hot-press mould, base mould is shaped with the help of stationary cooling and forms the platform body, and the hot-press mould is made into the baffle by heating and pressurizing, and the baffle and the platform body are seamlessly connected to form the driver platform, the platform surface of the platform body is provided with a plurality of installation grooves respectively, the installation groove is used for embedding the functional module, and the installation groove edge is equipped with the positioning flange, is used for ensuring the accurate alignment when the functional module is installed, one end of the baffle is fixedly installed at the top of the platform body, and the other end extends downward and covers the side of the platform body, the forming die of the utility model separates the baffle and the platform body and forms, effectively avoids the obvious joint and glue damage problem caused by traditional multi-mode slitting, and further realizes the high quality forming of the driver platform, improves the overall texture and service life of the product.

Description

Technical Field

[0001] This utility model relates to the field of rail vehicle technology, and in particular to a molding die for a driver's cab with color-separated gel coat. Background Technology

[0002] Most train driver's cabs are made of composite materials. To prevent discoloration due to wear and tear over time, a gel coat layer is added to the composite material, giving the cab surface good wear resistance and anti-discoloration properties. However, traditional gel coat layers are usually a single color, which is insufficient to meet the functional differentiation and aesthetic requirements of different areas of the driver's cab.

[0003] In addition, the driver's cab needs to accommodate a variety of equipment, resulting in a complex shape. In traditional technology, composite material molds need to be separated multiple times. During the molding and demolding process, the parting line and gel coat damage inevitably occur. Therefore, most of the current methods are to use spray painting to treat the surface of the driver's cab. However, spray painting has defects such as poor wear resistance, easy surface wear and discoloration, and steps at the parting line, which affect the aesthetics and user experience. Utility Model Content

[0004] The technical problem to be solved by this utility model is that, in order to solve the problems of difficulty in accurately molding the color separation area on the surface of the driver's cab, poor wear resistance, and the impact of parting lines on the appearance in the existing molding technology, this utility model provides a molding mold for the driver's cab with color separation gel coat, which reduces the number of mold separations, reduces the probability of parting line marks or gel coat damage during demolding, and improves the product appearance quality and production efficiency.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a molding mold for a driver's cab with color-separated gel coat, including a base mold and a hot pressing mold. The base mold is used to form the cab body by static cooling. The hot pressing mold is used to form a baffle plate by heating and pressing. The baffle plate is seamlessly connected with the cab body to form a driver's cab.

[0006] The platform surface of the platform is provided with multiple mounting slots, which are used to embed functional modules. The mounting slots are provided with positioning flanges on their edges to ensure accurate alignment of the functional modules during installation. One end of the shield (12) is fixedly installed on the top of the platform, and the other end extends downward and covers the side of the platform.

[0007] This separate molding of the baffle and the platform effectively avoids the problems of obvious seams and gel coat damage caused by traditional multi-mold cutting. This results in high-quality molding of the driver's cab, improving the overall texture and lifespan of the product.

[0008] Furthermore, the top of the base mold is provided with a mold cavity that matches the shape of the platform. Multiple protrusions are detachably installed in the mold cavity. The shape of the protrusions is adapted to the contour of the mounting groove. The protrusions are used to simultaneously form the mounting groove when the platform is formed. Thus, through the detachable protrusion design, the position and number of mounting grooves can be flexibly adjusted without changing the overall structure of the mold, so as to adapt to the functional module layout requirements of different models of driver's cabs.

[0009] Furthermore, the bottom of the protrusion is fixed to the mold cavity by bolts or clips, which facilitates quick disassembly and replacement and adapts to diverse production needs.

[0010] Furthermore, the protrusion is provided with a draft angle α; since the mounting groove has square corners, the design of the draft angle effectively reduces the demolding resistance, avoids damage to the groove edge due to stress concentration, and at the same time ensures the geometric accuracy and surface finish of the mounting groove.

[0011] Furthermore, there is a gap between the side of the protrusion and the cavity surface of the mold cavity. The gap is filled and sealed with sealant, so that the protrusion fits tightly with the mold cavity. This ensures that the gel coat layer completely covers the edge of the mounting groove during the molding process, avoiding gel coat cracking or peeling caused by local stress concentration, thereby improving the overall structural strength and appearance consistency of the driver's cab.

[0012] Furthermore, the sealant is modeling clay, which has good sealing performance and plasticity, and can effectively fill the gap between the protrusion and the mold cavity when the mold is closed, preventing resin leakage; at the same time, the modeling clay is easy to remove when the protrusion is disassembled, and will not cause damage or residue to the surface of the mold cavity.

[0013] Furthermore, the mold cavity is provided with color separation marks, which are used to guide the spraying of multi-color gel coats, ensuring that the boundaries of different colors in the gel coat layer are clear and aligned, thereby achieving coordination and consistency in color transition.

[0014] Furthermore, the hot press mold includes an upper mold and a lower mold, and a cavity for forming a baffle is provided between the upper mold and the lower mold. The upper mold and the lower mold are precisely aligned by guide pins and positioning holes.

[0015] Furthermore, the platform includes a gel coat layer and a composite material layer. The gel coat layer covers the surface of the composite material layer, and the gel coat layer presents different colors in different functional areas of the platform to achieve a color separation effect. The gel coat layer is tightly bonded to the composite material layer through an integral molding process, eliminating the need for subsequent spraying and avoiding problems such as poor wear resistance and color separation line steps that may occur in the painting process.

[0016] The shielding panel includes a second gel coat layer and a composite material layer. The second gel coat layer covers the surface of the composite material layer, and the color of the second gel coat layer is consistent with the color of the corresponding area of ​​the first gel coat layer to achieve a harmonious overall appearance.

[0017] Furthermore, the gel coat layer one adopts multi-color gel coat spraying technology, and achieves seamless transition of different colors by precisely controlling the spraying area and thickness.

[0018] The beneficial effects of this utility model are that the mold for driver's cab with color-separated gel coat of this utility model tightly combines the gel coat layer and the composite material layer through an integrated molding process, which not only avoids the problems caused by subsequent spraying; at the same time, through the base mold and the protrusion, the mounting groove is formed simultaneously during the molding of the cab, which effectively improves production efficiency and reduces manufacturing costs; through detachable installation, the position and number of mounting grooves can be flexibly adjusted without changing the overall structure of the mold, so as to adapt to the functional module layout requirements of different models of driver's cabs.

[0019] The present invention relates to a molding die for a driver's cab with color-separated gel coat. By setting a protrusion with a draft angle α, it is easy to demold and avoid damage to the gel coat layer. At the same time, there is a gap between the side of the protrusion and the mold cavity, which is sealed with putty to effectively prevent resin leakage and ensure molding quality.

[0020] The present invention provides a molding die for a driver's cab with color-separated gel coat, and also provides color-separation markings to guide the spraying of multi-color gel coat, ensuring clear alignment of different color boundaries and achieving a harmonious and consistent color transition. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is an assembly drawing of the platform body and the shielding plate of this utility model.

[0023] Figure 2 This is a cross-sectional schematic diagram of the hot pressing mold structure.

[0024] Figure 3 This is a schematic diagram of the assembly of the platform and the base mold.

[0025] Figure 4 This is a cross-sectional schematic diagram of the protrusion and the base mold in Embodiment 1.

[0026] Figure 5 This is a schematic diagram of the gel coat layer one spraying process.

[0027] In the diagram: 11. Platform; 111. Mounting groove; 12. Baffle plate; 21. Base mold; 211. Protrusion; 22. Lower mold; 23. Upper mold. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0029] Example 1:

[0030] like Figures 1-5 As shown, a molding die for a driver's cab with color-separated gel coat includes a base mold 21 and a hot press mold. The base mold 21 forms the cab body 11 by means of static cooling, and the hot press mold forms a baffle plate by means of heating and pressurizing. The baffle plate is seamlessly connected to the cab body 11 to form a driver's cab.

[0031] Reference Figure 2 The hot press mold includes an upper mold 23 and a lower mold 22. A cavity for forming a baffle is provided between the upper mold 23 and the lower mold 22. The upper mold 23 and the lower mold 22 are precisely aligned by the cooperation of guide pins and positioning holes.

[0032] Reference Figure 1 The platform 11 has multiple mounting slots 111 on its surface. The mounting slots 111 are used to embed functional modules. The edges of the mounting slots 111 are provided with positioning flanges to ensure accurate alignment of the functional modules during installation. One end of the shield is fixedly installed on the top of the platform 11, and the other end extends downward and covers the side of the platform 11, which can effectively block direct sunlight and improve the driver's visibility and driving comfort.

[0033] in:

[0034] Reference Figure 3 , Figure 4 The top of the base mold 21 is provided with a mold cavity that matches the shape of the platform 11. Multiple protrusions 211 are detachably installed in the mold cavity. The shape of the protrusions 211 is adapted to the contour of the mounting groove 111. The protrusions 211 are used to simultaneously form the mounting groove 111 when the platform 11 is formed. Thus, through the design of the detachable protrusions 211, the position and number of the mounting grooves 111 can be flexibly adjusted without changing the overall structure of the mold, so as to adapt to the functional module layout requirements of different models of driver's cabs.

[0035] The bottom of the protrusion 211 is bolted into the mold cavity. The protrusion 211 has a draft angle α. Because the mounting groove 111 has square corners, the draft angle design effectively reduces demolding resistance and avoids damage to the groove edge due to stress concentration. At the same time, it ensures the geometric accuracy and surface finish of the mounting groove. There is a gap between the side of the protrusion 211 and the cavity surface of the mold cavity, which is less than 0.5mm. The gap is filled and sealed with putty, so that the protrusion 211 fits tightly with the mold cavity. This ensures that the gel coat layer completely covers the edge of the mounting groove 111 during the molding process, avoiding gel coat cracking or peeling caused by local stress concentration. This improves the overall structural strength and appearance consistency of the driver's cab. When disassembling the protrusion 211, the putty is also easy to remove without damaging or leaving residue on the mold cavity surface.

[0036] Secondly:

[0037] The platform 11 includes a gel coat layer and a composite material layer. The gel coat layer covers the surface of the composite material layer, and the gel coat layer presents different colors in different functional areas of the platform 11 to achieve a color separation effect. The gel coat layer is tightly bonded to the composite material layer through an integral molding process, eliminating the need for subsequent spraying and avoiding problems such as poor wear resistance and color separation step that may occur in the painting process. The gel coat layer adopts multi-color gel coat spraying technology, and achieves seamless transition of different colors by precisely controlling the spraying area and thickness.

[0038] The masking plate 12 includes a second gel coat layer and a composite material layer. The second gel coat layer covers the surface of the composite material layer, and the color of the second gel coat layer of the masking plate 12 is consistent with the color of the corresponding area of ​​the first gel coat layer, so as to achieve a coordinated overall appearance.

[0039] Reference Figure 5 The mold cavity is equipped with color separation marks, which are used to guide the spraying of multi-color gel coats, ensuring that the boundaries of different colors in the gel coat layer are clear and aligned, thereby achieving coordination and consistency in color transition.

[0040] The specific molding process is as follows:

[0041] S1. Cleaning of Molding Components - 21: Clean the mold cavity with clean cotton yarn. The surface of the mold cavity must be smooth, with a smooth curve, and free from scratches, pits, or other defects. The surface gloss should be ≥90% / 60° and free from fabric texture. Apply release agent according to the principle of 6% new and 1% old.

[0042] S2. Installation of protrusion 211: Install and fix the protrusion 211 on the mold cavity one by one according to the position of the mounting groove 111. Note that the draft angle a side should face outward. Visually check that the gap between the mounting groove and the mold is no more than 0.5mm. Use putty to fill the gap and smooth it.

[0043] S3. Gelcoat Spraying: Use high-temperature tape and paper tape less than 20mm wide to protect the area according to the color coding and following the principle of spraying from difficult to easy areas. Ensure corners and rounded areas are flat and free of curling edges to prevent color bleeding. Spray in multiple coats, allowing each coat to flash-dry for 5-10 minutes between coats. Maintain a film thickness of 500um-700um. For areas inaccessible to the spray gun, such as the lower part of the driver's console and recesses, reduce the spray pressure and spray volume. After application, use a brush dipped in gelcoat to touch up these areas and use a wet film thickness gauge for measurement.

[0044] S4. Hand Lay-up Molding: Before laying the yarn at the corner of the driver's cab, apply a thin layer of resin putty, then impregnate the untwisted yarn with resin and fill the corner area with the resin-impregnated material. When laying the first layer of surface felt, apply a thin, even layer of resin to the mold surface, lay the surface felt, and then apply another layer of resin evenly on the surface felt. Roll it tightly with a roller to remove air bubbles, and remove any remaining bubbles after curing. Afterward, proceed with the subsequent fiber laying according to the layering requirements. First, apply a layer of resin, then lay the fiber, and use a roller dipped in an appropriate amount of resin to flatten it. Use an air bubble roller to remove air bubbles and compact it. Apply even pressure during rolling to prevent layer displacement. Rolling should only be done layer by layer during laying; multiple layers should not be laid simultaneously. When laying fibers, overlap them in a staggered manner. The joints of adjacent layers should be staggered by 30mm-50mm, and the joints of the same product should not be on the same cross-section.

[0045] S5. Curing and Demolding: Curing is achieved by maintaining a temperature of 15℃ to 35℃ for more than 12 hours. Before demolding, the Barcol hardness of the product must be tested at 6 points. The average Barcol hardness is considered qualified if it reaches or exceeds 38. If the Barcol hardness of the product meets the demolding requirements, use a wooden hammer to tap the area around the driver's cab and the center of the movable block to loosen and separate the product from the mold and the movable block from the product. At the point where the product separates from the mold or cracks, insert wooden or plastic wedges between the mold and the product to separate the product from the mold.

[0046] Example 2: The difference from Example 1 is that:

[0047] Multiple positioning grooves are provided on the cavity surface of the mold cavity, and a positioning pin is provided at the bottom of the protrusion 211. The positioning groove is used to cooperate with the positioning pin to ensure the precise positioning of the protrusion 211 in the mold cavity, prevent displacement or deformation during the molding process, and thus ensure the dimensional accuracy and positional accuracy of the mounting groove 111.

[0048] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A molding die for a driver's cab with color-separated gel coat, characterized in that: It includes a base mold (21) and a hot press mold. The base mold (21) is formed into a platform (11) by means of static cooling. The hot press mold is formed into a baffle plate (12) by means of heating and pressurizing. The baffle plate (12) is seamlessly connected with the platform (11) to form a driver's cab. The platform (11) has multiple mounting slots (111) on its surface. The mounting slots (111) are used to embed functional modules. One end of the shield (12) is fixedly installed on the top of the platform (11), and the other end extends downward and covers the side of the platform (11).

2. The molding die for a driver's cab with color-separated gel coat as described in claim 1, characterized in that: The top of the base mold (21) is provided with a mold cavity that matches the shape of the platform (11). Multiple protrusions (211) are detachably installed in the mold cavity. The protrusions (211) are used to simultaneously form the mounting groove (111) when the platform (11) is formed.

3. The molding die for a driver's cab with color-separated gel coat as described in claim 2, characterized in that: The bottom of the protrusion (211) is fixed to the mold cavity by bolts or snap-fit.

4. The molding die for a driver's cab with color-separated gel coat as described in claim 3, characterized in that: The protrusion (211) is provided with a draft angle α.

5. The molding die for a driver's cab with color-separated gel coat as described in claim 4, characterized in that: There is a gap between the side of the protrusion (211) and the cavity surface of the mold cavity, and the gap is sealed by filling with sealant.

6. The molding die for a driver's cab with color-separated gel coat as described in claim 5, characterized in that: The sealant is modeling clay.

7. The molding die for a driver's cab with color-separated gel coat as described in claim 2, characterized in that: The mold cavity is equipped with color-coded markings.

8. The molding die for a driver's cab with color-separated gel coat as described in claim 1, characterized in that: The hot press mold includes an upper mold (23) and a lower mold (22), and a cavity for forming a baffle plate (12) is provided between the upper mold (23) and the lower mold (22).

9. The molding die for a driver's cab with color-separated gel coat as described in claim 1, characterized in that: The platform (11) includes a gel coat layer and a composite material layer. The gel coat layer covers the surface of the composite material layer, and the gel coat layer presents different colors in different functional areas of the platform (11). The shield (12) includes a second gel coat layer and a composite material layer. The second gel coat layer covers the surface of the composite material layer, and the color of the second gel coat layer is consistent with the color of the corresponding area of ​​the first gel coat layer.

10. The molding die for a driver's cab with color-separated gel coat as described in claim 9, characterized in that: The gel coat layer is applied using multi-color gel coat spraying technology.

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