A rapid demoulding automobile instrument panel forming die

Abstract

The utility model discloses a quick demoulding's automobile instrument board forming die relates to the technical field of automobile parts, and its technical key points are: including upper die and lower die, the working surface of upper die and lower die is evenly provided with containing groove, is provided with nitrogen gas spring in containing groove, and the opening of containing groove is closed through the flexible sheet, and containing groove and flexible sheet constitute movable cavity, and nitrogen gas spring is located in movable cavity, the utility model can reduce the adhesion, reduces the separation resistance.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a quick-release automotive dashboard molding die. Background Technology

[0002] As a core component of the interior system, the molding process of an automotive dashboard directly affects the product's appearance, feel, and functionality. Modern dashboards can be categorized into three types based on their feel: hard, semi-hard, and soft. Soft dashboards, due to their leather covering and internal foam layer, require a complex molding process.

[0003] Traditional molds rely on mechanical ejection mechanisms, requiring springs or push plates to push the product out of the cavity. However, soft-touch dashboard panels, due to their softer outer covering, tend to stick to the mold surface, leading to increased demolding resistance. Summary of the Invention

[0004] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a car dashboard molding die that can be quickly demolded, reducing adhesion and reducing release resistance.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A quick-release automotive dashboard molding die includes an upper die and a lower die. The working surfaces of the upper die and the lower die are evenly provided with receiving grooves. A nitrogen spring is provided in the receiving groove. The opening of the receiving groove is closed by a flexible sheet. The receiving groove and the flexible sheet form a movable cavity. The nitrogen spring is located in the movable cavity.

[0006] Preferably, the upper mold, lower mold, and the working surface of the flexible sheet are coated with an isolation coating.

[0007] Preferably, the isolation coating is one of a nano-ceramic coating, a silicone isolation coating, and a chitosan anti-adhesion film.

[0008] Preferably, the upper mold working surface and the flexible sheet working surface, and the lower mold working surface and the flexible sheet working surface are smoothly transitioned.

[0009] Preferably, the receiving grooves of the upper mold and the receiving grooves of the lower mold are staggered.

[0010] Preferably, a buffer pad is provided between the nitrogen spring and the bottom of the receiving groove, and the buffer pad is made of rubber or silicone.

[0011] Preferably, the shape of the receiving groove is a regular geometric shape, which is one of a circle, a square or an ellipse.

[0012] Preferably, the flexible sheet is made of one of silicone rubber, fluororubber, and polyimide.

[0013] This utility model has the following beneficial effects: Application of the isolation coating: The upper mold, lower mold, and working surface of the flexible sheet are coated with an isolation coating, which is one of the following: nano-ceramic coating, silicone isolation coating, and chitosan anti-blocking film. These isolation coatings have excellent anti-blocking properties and can form an isolation layer between the mold and the automotive dashboard molding material, preventing the material from directly contacting and sticking to the mold surface during molding. This effectively reduces product defects caused by adhesion during demolding and improves product quality.

[0014] Smooth transition design of working surfaces: There is a smooth transition between the working surfaces of the upper mold and the flexible sheet, and between the working surfaces of the lower mold and the flexible sheet. This smooth design avoids sharp edges or unevenness on the mold surface, reduces adhesion caused by tight local contact between the molding material and the mold surface, and allows the product to separate more smoothly from the mold surface during demolding, further reducing the possibility of adhesion.

[0015] Nitrogen spring and movable cavity setup: Receiving grooves are evenly distributed on the working surfaces of the upper and lower molds. A nitrogen spring is installed within each groove, and the openings of the grooves are sealed by flexible sheets. The grooves and flexible sheets form a movable cavity, within which the nitrogen spring is located. During demolding, the nitrogen spring provides a certain elastic force. When the mold opens, the elasticity of the nitrogen spring assists in separating the molded product from the mold, reducing the adhesion and friction between the product and the mold, thereby reducing separation resistance and achieving rapid demolding.

[0016] Addition of a buffer pad: A buffer pad, made of rubber or silicone, is placed between the nitrogen spring and the bottom of the receiving groove. The buffer pad not only cushions the impact of the nitrogen spring on the bottom of the receiving groove during operation, but also increases the stability of the nitrogen spring to a certain extent, allowing its elastic force to act more evenly on the product, further assisting in the separation of the product from the mold and reducing separation resistance.

[0017] Flexible sheet material selection: The flexible sheet is made of one of the following materials: silicone rubber, fluororubber, and polyimide. These materials have good flexibility and elasticity. During demolding, the flexible sheet can deform to a certain extent along with the demolding action of the product, reducing the obstruction to demolding and allowing the product to be released from the mold more easily, reducing release resistance and improving demolding efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a cross-sectional view of the first embodiment of the present invention.

[0020] Figure 2 This is a cross-sectional view of the second embodiment of the present invention.

[0021] In the diagram: 101, upper mold; 102, lower mold; 201, receiving groove; 202, nitrogen spring; 203, flexible sheet; 204, buffer pad. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] First embodiment like Figure 1 As shown, a quick-release automotive dashboard molding die includes an upper die 101 and a lower die 102. Receiving grooves 201 are evenly provided on the working surfaces of the upper die 101 and the lower die 102. A nitrogen spring 202 is provided in the receiving groove 201. The opening of the receiving groove 201 is closed by a flexible sheet 203. The receiving groove 201 and the flexible sheet 203 form a movable cavity, and the nitrogen spring 202 is located in the movable cavity.

[0024] like Figure 1As shown, during the molding process of an automotive dashboard, the upper mold 101 and the lower mold 102 close, and molding material is injected to form the product within the mold cavity. When the product is molded and demolding is required, the upper mold 101 and the lower mold 102 begin to separate. Since a nitrogen spring 202 is installed within the movable cavity formed by the receiving groove 201 and the flexible sheet 203, the nitrogen spring 202, which was originally under compression or pre-tension, begins to recover its deformation as the mold separates. The elastic restoring force of the nitrogen spring 202 acts on the molded automotive dashboard product through the flexible sheet 203. The flexible sheet 203 has a certain degree of flexibility and elasticity, enabling it to evenly transmit force to the product under the action of the nitrogen spring 202, while simultaneously deforming to a certain extent to accommodate the relative movement between the product and the mold. This elastic force provides the auxiliary power for the product to detach from the mold, overcoming the adsorption and friction forces between the product and the mold surface caused by material shrinkage and adsorption during the molding process. This allows the product to detach from the mold more easily and quickly, thereby achieving rapid demolding, effectively improving production efficiency, and reducing potential damage to the product during demolding.

[0025] like Figure 1 As shown, the working surfaces of the upper mold 101, lower mold 102, and flexible sheet 203 are coated with an isolation coating. The isolation coating is one of a nano-ceramic coating, a silicone isolation coating, or a chitosan anti-adhesion film. During the molding process of an automotive dashboard, the molding material comes into contact with the mold surface. The isolation coating has properties such as low surface energy and non-stickiness, forming an isolation barrier on the mold surface to prevent direct molecular adsorption and adhesion between the molding material and the mold surface. This significantly reduces the adhesion force between the product and the mold, thereby reducing defects such as tearing and deformation caused by adhesion during demolding, ensuring product integrity and quality.

[0026] like Figure 1 As shown, the working surfaces of the upper mold 101 and flexible sheet 203, and the lower mold 102 and flexible sheet 203, transition smoothly. This design avoids sharp edges or uneven areas on the mold surface. During molding, the molding material can fill the mold cavity evenly, preventing uneven material distribution or stress concentration due to local protrusions or depressions. During demolding, the smooth surface reduces friction and resistance between the product and the mold, allowing the product to separate more smoothly from the mold surface, reducing demolding difficulty and improving demolding efficiency.

[0027] like Figure 1As shown, the receiving grooves 201 of the upper mold 101 and the lower mold 102 are staggered. This staggered distribution of the receiving grooves 201 of the upper mold 101 and the lower mold 102 makes the pushing force of the nitrogen springs 202 on the product more evenly distributed when the mold opens. When the mold opens, the elastic force of each nitrogen spring 202 can act on the product from different positions, avoiding excessive local stress and deformation of the product due to concentrated pushing force. At the same time, it can also more effectively overcome the adsorption and friction between the product and the mold, allowing the product to be smoothly and quickly removed from the mold, improving the stability of demolding and product quality.

[0028] like Figure 1 As shown, the receiving groove 201 has a regular geometric shape, which can be one of a circle, square, or ellipse. The regular geometric shape facilitates manufacturing and ensures the dimensional and shape accuracy of the receiving groove 201, thereby ensuring the accurate installation position of the nitrogen spring 202 within the receiving groove 201 and its stable operation. Furthermore, the regular shape of the receiving groove 201 facilitates the uniform release of elastic force by the nitrogen spring 202 during mold opening, better assisting in product demolding and reducing problems such as uneven force distribution or poor movement of the nitrogen spring 202 caused by irregular shapes of the receiving groove 201.

[0029] like Figure 1 As shown, the flexible sheet 203 is made of materials such as silicone rubber, fluororubber, or polyimide. Silicone rubber has good flexibility and elasticity, and can deform under the action of the nitrogen spring 202, evenly transferring the elastic force of the nitrogen spring 202 to the product, while not causing scratches or damage to the product surface. Fluororubber has excellent high temperature resistance and chemical corrosion resistance, and can maintain stable performance in complex molding environments, ensuring normal functioning during demolding. Polyimide has high strength, high modulus, and good heat resistance, and can withstand certain pressure and temperature changes, providing reliable auxiliary demolding force for the product during demolding, while ensuring the service life of the flexible sheet 203 itself. Flexible sheets 203 made of these materials can all assist in product demolding under the action of the nitrogen spring 202, reducing release resistance and achieving rapid demolding.

[0030] Second embodiment like Figure 2As shown, a buffer pad 204, made of rubber or silicone, is provided between the nitrogen spring 202 and the bottom of the receiving groove 201. During mold operation, the nitrogen spring 202 frequently undergoes compression and extension. When the nitrogen spring 202 is compressed by external forces (such as pressure during mold closing), the buffer pad 204 can elastically deform, absorbing the impact energy generated by the nitrogen spring 202 on the bottom of the receiving groove 201. When the mold opens and the nitrogen spring 202 recovers its deformation, the buffer pad 204 can also buffer the rebound force of the nitrogen spring 202, reducing the rigid impact on the bottom of the receiving groove 201 caused by the sudden movement of the nitrogen spring 202, preventing damage or deformation of the bottom of the receiving groove 201 due to long-term impact, and extending the service life of the mold. The rubber or silicone buffer pad 204 has a certain degree of elasticity and flexibility, which can fill the small gap between the nitrogen spring 202 and the bottom of the receiving groove 201, making the installation of the nitrogen spring 202 in the receiving groove 201 more stable. During the mold operation, the buffer pad 204 can reduce the shaking and displacement of the nitrogen spring 202, ensuring that the nitrogen spring 202 always functions in the predetermined direction and position, and ensuring that the elastic force of the nitrogen spring 202 can be accurately transmitted to the flexible sheet 203, thereby assisting the product to be demolded smoothly and improving the stability and reliability of demolding.

[0031] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A quick-release forming mold for an automobile instrument panel, comprising an upper mold (101) and a lower mold (102), characterized in that: The upper mold (101) and the lower mold (102) are evenly provided with receiving grooves (201) on their working surfaces. A nitrogen spring (202) is provided in the receiving groove (201). The opening of the receiving groove (201) is closed by a flexible sheet (203). The receiving groove (201) and the flexible sheet (203) form a movable cavity. The nitrogen spring (202) is located in the movable cavity.

2. The automotive dashboard molding die with rapid demolding capability according to claim 1, characterized in that: The working surfaces of the upper mold (101), lower mold (102), and flexible sheet (203) are coated with an isolation coating.

3. A rapid-releasable automotive instrument panel forming mold according to claim 2, characterized by: The isolation coating is one of the following: a nano-ceramic coating, a silicone isolation coating, and a chitosan anti-adhesion film.

4. A rapid-releasable automotive instrument panel forming mold according to claim 1, characterized by: The upper mold (101) working surface and the flexible sheet (203) working surface, the lower mold (102) working surface and the flexible sheet (203) working surface are smoothly transitioned.

5. A rapid-releasable automotive instrument panel forming mold according to claim 1, characterized by: The receiving groove (201) of the upper mold (101) and the receiving groove (201) of the lower mold (102) are staggered.

6. A rapid-releasable automotive instrument panel forming mold according to claim 1, characterized by: A buffer pad (204) is provided between the nitrogen spring (202) and the bottom of the receiving groove (201), and the buffer pad (204) is made of rubber or silicone.

7. A rapid-releasable automotive instrument panel forming mold according to claim 1, characterized by: The shape of the receiving groove (201) is a regular geometric shape, which is one of a circle, a square or an ellipse.

8. A rapid-releasable automotive instrument panel forming mold according to claim 1, characterized by: The flexible sheet (203) is made of one of silicone rubber, fluororubber and polyimide.

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