A double-sided baking forming mold

Abstract

The utility model relates to a kind of double-sided baking forming die, including rack, it includes the base for installing lower mould component, and the mounting plate for installing upper mould component, mounting plate elastically sets on base;Lower mould component, at least including lower baking tray, lower baking tray is provided with the mould core of texturing mark;Upper mould component, at least including upper baking tray;Upper mould component is provided with forming cavity, and forming cavity extends to the lower end surface of upper mould component and forms the opening that can accommodate mould core inserts;Upper baking tray is equipped with inflation passage to the forming cavity intercommunication.The utility model has the beneficial effects that: using the scheme of double-sided baking to diaphragm, high-pressure gas is attached to diaphragm and is punched, to form the three-dimensional modeling of diaphragm, with significant advantages in appearance effect, process stability and other aspects, can effectively meet the demand of industry to high-quality injection molding part, double-sided baking forming reduces the softening period of diaphragm baking, greatly improves production efficiency, increases the utilization of diaphragm.

Description

Technical Field

[0001] This utility model relates to film forming molds, and more particularly to a double-sided baking forming mold. Background Technology

[0002] The development of intelligent and connected vehicles presents both new opportunities and challenges for the design of IML injection molded parts. In smart cockpits, the increasing use of large displays and touch-sensitive control panels necessitates that IML injection molded parts not only meet aesthetic requirements but also possess functionality and interactivity. For example, IML injection molded buttons with integrated touch control functions require an exquisite appearance, sensitive operation, and harmonious integration with the interior design. The wider application of IML injection molding technology is expected to place higher demands on appearance quality and design innovation.

[0003] Chinese invention patent CN111873381A discloses an improved high-pressure forming mold for diaphragms. The mold includes a pressure plate and a lower template. The pressure plate is positioned above the lower template, which has a forming cavity. The pressure plate has a through groove corresponding to the forming cavity. A panel is also provided above the pressure plate, and high-pressure air holes are provided on the panel. A lower mold pad is provided below the lower template. Both the lower mold pad and the lower template have corresponding seat grooves, in which a mold core is installed. The upper part of the mold core has a flat mold core venting surface with multiple vent holes. By designing the forming part of the mold as a combination of a panel, panel, and lower template, the positions of each forming part in the mold are adjustable during the forming process. This allows the product geometry to be disassembled under different mold core movements, thus completing the geometric disassembly forming of the product. Furthermore, the flat mold core venting surface on the mold core facilitates venting and avoids air entrapment.

[0004] However, for example, the diaphragm forming mold used in the prior art mentioned above is usually provided with an air inlet channel to input high-pressure gas. When high-pressure gas is input into the air inlet channel, the rushing speed is extremely fast, and there are usually only one or more air inlets in the forming cavity. When the high-pressure gas rushes into the diaphragm in the forming cavity from the air inlet, it preferentially impacts the part corresponding to the position of the air inlet, thereby causing the diaphragm to be unbalanced in the stamping and the texture on the diaphragm to be uneven. Utility Model Content

[0005] In order to solve the above-mentioned problems in the prior art, this utility model provides a double-sided baking molding mold.

[0006] The above-mentioned problems of this utility model are solved by the following technical solution:

[0007] A double-sided baking and forming mold, comprising,

[0008] A frame, comprising a base for mounting a lower mold assembly and a mounting plate for mounting an upper mold assembly, the mounting plate being resiliently disposed on the base;

[0009] The lower mold assembly includes at least a lower baking tray, on which a mold core with textured markings is provided;

[0010] The upper mold assembly includes at least an upper baking tray; the upper mold assembly is provided with a molding cavity, and the molding cavity extends to the lower end face of the upper mold assembly to form an opening that can accommodate the insertion of the mold core;

[0011] The upper baking tray is provided with an air inlet channel that connects to the molding cavity.

[0012] By adopting the above technical solution and using double-sided baking technology, the film can be quickly and evenly heated and softened in the forming cavity, effectively shortening the softening cycle of traditional single-sided baking. This design not only greatly improves production efficiency, but also reduces the loss of film caused by local overheating or uneven heating through uniform heating, significantly improving film utilization and reducing production costs.

[0013] A further provision of the above technical solution is that: an air baffle is provided inside the molding cavity, the air baffle is located at the outlet of the inflation channel, and an air outlet gap is formed between the air baffle and the inflation channel.

[0014] A further provision of the above technical solution is that the baffle plate is fixed to the upper wall of the molding cavity by a fastener, and a diversion port capable of accommodating high-pressure gas moving in the horizontal direction is formed between adjacent fixing pins.

[0015] By adopting the above technical solution, an innovative combination structure of baffle plate and diversion air port is designed: when high-pressure gas enters the molding cavity through the inflation channel, it is first blocked by the baffle plate, changing the direct punching direction, and then evenly diffused into the upper space of the molding cavity through the diversion air port, finally covering the diaphragm surface with stable and balanced pressure. This uniform punching method effectively avoids the problem of uneven diaphragm deformation caused by local impact of high-pressure gas in traditional molds, making the ink stretching on the diaphragm more uniform, and significantly reducing the offset of characters, textures and other characteristic symbols, thus significantly improving the appearance refinement and consistency of the product.

[0016] A further provision of the above technical solution is that the mold core protrudes from the lower baking tray.

[0017] A further provision of the above technical solution is that the texture mark protrudes from or is recessed from the surface of the mold core.

[0018] By adopting the above technical solution, the mold core adopts a replaceable design. By replacing the mold core with different textures or shapes, it can quickly adapt to the styling requirements of different automotive injection molded parts.

[0019] A further provision of the above technical solution is that the depth of the molding cavity is greater than the thickness of the mold core.

[0020] By adopting the above technical solution, the design of the forming cavity depth being greater than the mold core thickness provides a buffer space for high-pressure gas, further ensuring the stability of the stamping process, enabling the mold to adapt to the forming requirements of films of various materials and thicknesses, and broadening the application scenarios.

[0021] A further configuration of the above technical solution is as follows: the upper mold assembly includes a pressure plate, the upper baking tray is disposed on the upper end surface of the pressure plate, and the pressure plate is provided with a hollowed-out portion for forming a part of the molding cavity.

[0022] A further provision of the above technical solution is that the mounting plate is provided with an insertion groove that corresponds to the hollowed-out portion on the pressure plate, and the mold core can be embedded into the insertion groove.

[0023] A further provision of the above technical solution is that: a guide rod connected to the mounting plate is provided on the base, and a spring is sleeved on the guide rod, with the spring supporting the mounting plate.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] 1. This utility model adopts a double-sided baking method for the film, combined with high-pressure gas to attach and press the film to form a three-dimensional shape. It has significant advantages in terms of appearance and process stability, and can effectively meet the industry's demand for high-quality injection molded parts. The double-sided baking molding reduces the baking and softening cycle of the film, greatly improves production efficiency, and increases the utilization rate of the film.

[0026] 2. The high-pressure gas is homogenized to ensure uniform pressure on the diaphragm, resulting in uniform ink stretching and significantly reduced diaphragm deformation and offset of characters and other characteristic symbols. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model.

[0028] Figure 2 This is the front view of the present invention.

[0029] Figure 3 This is a cross-sectional view of the present invention in the mold-closed state.

[0030] Figure 4 This is a schematic diagram of the upper baking tray and the baffle plate.

[0031] Figure 5 This is a schematic diagram showing the position and structure of the diaphragm within the forming cavity.

[0032] The attached diagram is labeled as follows: 100, frame; 110, base; 120, mounting plate; 121, positioning protrusion.

[0033] 200. Upper mold assembly; 210. Upper baking tray; 220. Pressure plate;

[0034] 300. Lower mold assembly; 310. Lower baking tray; 311. Mold core; 311.1. Texture markings; 312. Positioning groove;

[0035] 1. Air baffle; 2. Fixing component; 3. Diaphragm; 4. Guide rod; 5. Spring; a. Forming cavity; b. Inflation channel; c. Diverting air port. Detailed Implementation

[0036] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0037] like Figure 1-5 As shown in the figure, this embodiment discloses a double-sided baking molding mold.

[0038] A double-sided baking and forming mold, comprising,

[0039] The frame 100 includes a base 110 for mounting the lower mold assembly 300 and a mounting plate 120 for mounting the upper mold assembly 200, the mounting plate 120 being elastically disposed on the base 110.

[0040] The lower mold assembly 300 includes at least a lower baking tray 310, on which a mold core 311 with textured markings 311.1 is provided;

[0041] The upper mold assembly 200 includes at least an upper baking tray 210; the upper mold assembly 200 is provided with a molding cavity a, and the molding cavity a extends to the lower end face of the upper mold assembly 200 to form an opening that can accommodate the mold core 311.

[0042] The upper baking tray 210 is provided with an air inlet channel b that connects to the molding cavity a.

[0043] The above is the basic scheme of this embodiment.

[0044] Specific reference Figures 1-3 As shown, the cut film 3 is positioned and installed into the upper mold assembly 200 for fixation. The press presses down on the upper mold assembly 200, and the upper mold assembly 200 moves downward to close with the lower mold assembly 300, so that the film 3 is pressed between the upper baking tray 210 and the lower baking tray 310. The upper baking tray 210 and the lower baking tray 310 can at least press the edge of the film 3 so that the middle part of the film 3 is located in a closed space.

[0045] The upper baking pan 210 and the lower baking pan 310 heat up, heating the entire molding cavity a, thereby softening the membrane 3 inside the molding cavity a.

[0046] At this time, the press inputs high-pressure gas into the air inlet of the air channel b of the upper template assembly. The high-pressure gas enters the forming cavity a and exerts pressure on the diaphragm 3 in the forming cavity a, pressing the diaphragm 3 downward. At this time, the softened diaphragm 3 adheres tightly to the mold core 311 and attaches to the texture mark 311.1 on the mold core 311, so that the mold shape is consistent with the texture mark 311.1.

[0047] After stamping is completed, the stamping machine is removed, and the mounting plate 120 drives the upper mold assembly 200 to elastically reset, so that the diaphragm 3 is exposed to the air and cools down rapidly, thereby forming a three-dimensional model.

[0048] In this embodiment, to ensure that the high-pressure gas injected into the molding cavity a has a uniform impact on the diaphragm 3, a baffle plate 1 is provided in the molding cavity a. The baffle plate 1 is located at the outlet of the inflation channel b, and an outlet gap is formed between the baffle plate 1 and the inflation channel b. See [reference needed] for details. Figure 4 As shown.

[0049] High-pressure gas enters along the inflation channel b and exits from the outlet of the inflation channel b. Due to the action of the baffle plate 1, it cannot directly press the diaphragm 3. Instead, it changes direction and overflows from the outlet gap, filling the upper part of the forming cavity a. As more and more high-pressure gas is input, the high-pressure gas in the forming cavity a fills downward, generating uniform pressure on the lower diaphragm 3, thereby uniformly pressing the diaphragm 3.

[0050] Preferably, in this embodiment, to ensure the connection of the baffle plate 1, the baffle plate 1 is fixed to the upper wall of the molding cavity a by the fixing member 2, and a diversion port c that can accommodate the high pressure gas moving in the horizontal direction is formed between adjacent fixing pins.

[0051] Specifically, in order to leave an air outlet gap between the baffle plate 1 and the upper wall of the forming cavity a, in this embodiment, the upper end face of the baffle plate 1 is formed with a short shaft, and a connecting hole is passed through the short shaft for connecting the fixing member 2.

[0052] Fixture 2 can be a fixing screw.

[0053] In this embodiment, multiple fixing members 2 are provided, and a diversion port c that can accommodate gas output is formed between adjacent fixing pins. High pressure with changed direction escapes from multiple diversion airflows, thereby quickly filling the upper space of the forming cavity a.

[0054] After being subjected to high-pressure gas impact for a long time, the baffle plate 1 will be damaged to a certain extent. In this embodiment, the baffle plate 1 is set separately, which can replace the baffle plate 1 and extend the service life of the mold.

[0055] Preferably, in this embodiment, the mold core 311 protrudes from the lower baking tray 310.

[0056] When the diaphragm 3 is heated, it softens. The middle part is held tightly against the upper surface of the mold core 311 by the support of the mold core 311, while the part outside the mold core 311 bends and deforms downwards due to its own weight and subsequent high pressure and other stamping action, and sticks to the side of the mold core 311, thus forming a three-dimensional model.

[0057] In this embodiment, the texture mark 311.1 protrudes from or is recessed from the surface of the mold core 311.

[0058] The molding process of the mold piece on the texture mark 311.1 is the same as the molding process on the mold core 311, and will not be described in detail here.

[0059] Based on the above settings, in this embodiment, different three-dimensional models with different shapes can be formed by replacing the mold core 311 or the texture mark 311.1 to match different automotive injection molding part requirements.

[0060] Furthermore, the configuration in this embodiment can not only mold three-dimensional automotive injection parts, but also simultaneously mold trademarks and other symbols on the injection parts.

[0061] In order to ensure that the stamping gas can form a stable gas that uniformly presses down on the diaphragm 3 in the forming cavity a, in this embodiment, the depth of the forming cavity a is greater than the thickness of the mold core 311.

[0062] In other words, the forming cavity a has a space for the stamping gas to be buffered, so that the single or multiple high-pressure gases can form a uniform gas consistent with the stamping part of the diaphragm 3 in the space, so as to uniformly stamp the stamping part of the die, ensuring the stability of the stamping process and the formation of a uniform pattern after stamping.

[0063] In this embodiment, the specific implementation of the upper mold assembly 200 is as follows: the upper mold assembly 200 includes a pressure plate 220, the upper baking tray 210 is disposed on the upper end surface of the pressure plate 220, and the pressure plate 220 is provided with a hollow part for forming a part of the molding cavity a.

[0064] The two sides of the pressure plate 220 and the mounting plate 120 are fixed. The diaphragm 3 is positioned and installed on the upper surface of the pressure plate 220. Then, the upper baking tray 210 is installed above the mold and fixed to the pressure plate 220, thereby clamping and fixing the diaphragm 3.

[0065] Specific reference Figure 5 As shown, the upper baking tray 210 is provided with a groove, which, together with the slotted part on the pressure plate 220, forms a forming cavity a. The diaphragm 3 is fixed between the pressure plate 220 and the upper baking tray 210, that is, the forming cavity a is divided into upper and lower parts. High-pressure gas rushes into the upper cavity and presses the diaphragm 3 downward.

[0066] Furthermore, in this embodiment, after stamping, the edge of the diaphragm 3 is clamped between the pressure plate 220 and the upper baking tray 210. That is to say, after stamping, a concave three-dimensional model is formed, and in the concave part, an upward protruding texture is formed. In other words, the protruding direction of the texture is towards the concave side of the three-dimensional model.

[0067] In this embodiment, the mounting plate 120 is provided with an insertion groove that is consistent with the hollowed-out portion on the pressure plate 220, and the mold core 311 can be embedded into the insertion groove.

[0068] Specifically, the lower end face of the mounting plate 120 is provided with a positioning protrusion 121, and the lower template is provided with a positioning groove 312 that cooperates with the positioning protrusion 121.

[0069] When the mold is closed, the positioning protrusion 121 and the positioning groove 312 cooperate, and the mold core 311 enters the insertion groove, located below the diaphragm 3, with a small gap between it and the diaphragm 3.

[0070] In this embodiment, the elastic reset of the mounting plate 120 is specifically set as follows: a guide rod 4 connected to the mounting plate 120 is provided on the base 110, and a spring 5 is sleeved on the guide rod 4, and the spring 5 supports the mounting plate 120.

[0071] Specific reference Figure 1 The lower end of the guide rod 4 is fixed to the base 110, and the upper end extends above the mounting plate 120 and limits the mounting plate 120; the lower end of the spring 5 contacts the base 110, and the upper end supports the mounting plate 120, so that the mounting plate 120 has an upward tendency.

[0072] When the pressure of the stamping machine on the upper mold assembly 200 is removed, the upper mold assembly 200 and the mounting plate 120 are not subjected to external force, the spring 5 returns to its original position, pushes the mounting plate 120 upward, and drives the upper mold assembly 200 to move upward. The upper mold assembly 200, along with the formed diaphragm 3, separates from the mold core 311, and demolds the diaphragm 3.

[0073] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A double-sided baking and forming mold, characterized in that: include, The frame (100) includes a base (110) for mounting a lower mold assembly (300) and a mounting plate (120) for mounting an upper mold assembly (200), the mounting plate (120) being elastically disposed on the base (110); The lower mold assembly (300) includes at least a lower baking tray (310), on which a mold core (311) with textured markings (311.1) is provided; The upper mold assembly (200) includes at least an upper baking tray (210); the upper mold assembly (200) is provided with a molding cavity (a), and the molding cavity (a) extends to the lower end face of the upper mold assembly (200) to form an opening that can accommodate the mold core (311) to be inserted; The upper baking pan (210) is provided with an air inlet channel (b) that connects to the molding cavity (a).

2. The double-sided baking forming mold according to claim 1, characterized in that: An air baffle (1) is provided in the molding cavity (a). The air baffle (1) is located at the outlet of the inflation channel (b) and an air outlet gap is formed between it and the inflation channel (b).

3. The double-sided baking forming mold according to claim 2, characterized in that: The baffle plate (1) is fixed to the upper wall of the forming cavity (a) by a fastener (2), and a diversion port (c) is formed between adjacent fixing pins to accommodate high-pressure gas moving in the horizontal direction.

4. The double-sided baking forming mold according to claim 1, characterized in that: The mold core (311) protrudes from the lower baking tray (310).

5. The double-sided baking forming mold according to claim 1 or 4, characterized in that: The texture mark (311.1) protrudes from or is recessed from the surface of the mold core (311).

6. The double-sided baking forming mold according to claim 1, characterized in that: The depth of the molding cavity (a) is greater than the thickness of the mold core (311).

7. The double-sided baking forming mold according to claim 1, characterized in that: The upper mold assembly (200) includes a pressure plate (220), and the upper baking tray (210) is disposed on the upper end surface of the pressure plate (220). The pressure plate (220) has a hollowed-out portion for forming a part of the molding cavity (a).

8. The double-sided baking forming mold according to claim 7, characterized in that: The mounting plate (120) is provided with an insertion groove that is consistent with the hollow part on the pressure plate (220), and the mold core (311) can be embedded into the insertion groove.

9. The double-sided baking forming mold according to claim 1, characterized in that: The base (110) is provided with a guide rod (4) connected to the mounting plate (120), and a spring (5) is sleeved on the guide rod (4) to support the mounting plate (120).

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