A long fiber steam forming mold

Abstract

The long fiber steam forming die provided by the utility model, including upper die assembly and lower die assembly, both of which include hollow die shell, the die shell is provided with steam pipeline network, the die shell is uniformly distributed with a plurality of steam output holes, which are communicated with the steam pipeline network, the steam output hole is provided with a steam plug, which is provided with a pore structure communicating with the two end faces, so as to increase the steam pressure and limit the flow of the steam through the steam output hole, the design improves the overall framework of the die, adopts a closed shell-shaped die, the steam structure for conveying is hidden in the shell in the form of pipeline network, the space where the steam is located is isolated in the upper die or the lower die, unnecessary heat loss is reduced, and the possibility of steam leakage is reduced; the steam through hole is changed into a smaller pore structure through the steam plug, the pore diameter through which the steam can pass is reduced, the steam output is reduced, the steam output pressure is increased, and the heat utilization rate is improved.

Description

Technical Field

[0001] This utility model relates to the field of mold equipment technology, and more specifically, to a long fiber steam forming mold. Background Technology

[0002] Currently, the market trend for vehicle underbody protection plate components is characterized by increasingly stringent requirements for toughness, rigidity, plasticity, and water resistance. Mainstream designs increasingly utilize long-fiber materials and corresponding processing techniques to meet these growing technical demands. Long-fiber materials offer the following advantages: excellent high-temperature resistance (withstanding 120℃ for 2000 hours), good flame retardancy, low water absorption (less than 10%), minimal water absorption and swelling, VOC-free (volatile organic compounds), glass fiber-free, numerous micropores, and good sound absorption and noise reduction capabilities.

[0003] The existing long-fiber material processing technology involves arranging steam outlets on the surface of a molding die. The die plasticizes the blank to be molded, and the continuous steam output during the molding process provides the heat required for the thermoplasticization of the long-fiber material. However, this processing technology has certain drawbacks, specifically: limited processing efficiency, especially insufficient utilization of steam heat, and significant energy consumption during the process; furthermore, steam leakage during processing can easily affect the construction environment and, in severe cases, pose a risk of burns to workers.

[0004] In summary, existing thermoforming processes for long fiber materials suffer from high energy consumption and high processing risks. Utility Model Content

[0005] The technical problem to be solved by this utility model is that the existing thermoforming process for long fiber materials has high energy consumption and high processing risk.

[0006] To address the aforementioned problems, this utility model provides a long fiber steam forming mold, comprising an upper mold assembly and a lower mold assembly that cooperate with each other. Both the upper mold assembly and the lower mold assembly include a hollow mold shell, and a steam pipeline network is provided inside the mold shell. Multiple steam output holes are evenly distributed on the forming end face of the mold shell, and each steam output hole is connected to the steam pipeline network. Each steam output hole is provided with a steam plug for blocking the steam output hole. The steam plug is cylindrical and has a fine hole structure connecting its two end faces to pressurize and limit the flow of steam passing through the steam output hole.

[0007] This novel steam forming mold, based on traditional molds, improves the overall structure of the upper and lower molds by adopting a closed shell mold. The forming end face of the mold is located on one side of the shell, while the structure for transporting steam is a pipeline network. This structure isolates the steam space inside the upper or lower mold, greatly reducing the possibility of steam leakage. Furthermore, a steam plug structure is added to the original steam outlet hole. This structure transforms the originally large steam passage, which is easy to process and clean, into a fine-pore structure on the steam plug. This reduces the diameter of the steam passage, decreases the steam output, and increases the steam output pressure, effectively improving the heat utilization rate of the steam. The combined effect of the specialized pipeline-like steam passage design within the mold and the reduced steam outlet hole design effectively reduces potential steam leakage, improves safety, increases the output pressure of the mold without increasing the mold thickness, improves the forming effect, and simultaneously reduces the energy consumption for heating and generating steam. This effectively solves the technical problems of high energy consumption and high processing risk in existing long fiber material thermoforming processes.

[0008] As a preferred embodiment, the inner peripheral wall of the steam outlet hole is provided with an internal thread, and the outer peripheral wall of the steam plug is provided with a matching external thread. This design provides a preferred design for the steam plug to mate with the forming surface of the mold shell. Through threaded assembly, the structure is simple, the processing cost is low, and it has the advantages of easy assembly, easy disassembly and cleaning.

[0009] As a preferred embodiment, the outer peripheral wall of one end of the steam plug is provided with a parallel ridge surface for assisting threaded installation. This design addresses the threaded fit between the steam plug and the steam outlet hole. By providing a parallel ridge surface on the outer wall of the steam plug end, it facilitates the use of assembly tools such as wrenches, making the installation of the steam plug easier. Furthermore, it is simpler to process and form compared to a typical hexagonal head structure, and it makes it easier to allow the end of the steam plug to sink into the forming end face of the mold housing to form a flat processing surface.

[0010] As a preferred embodiment, the steam plug is provided with a plurality of evenly distributed fine holes. This design further optimizes the design of the fine holes on the steam plug. Increasing the number of fine holes can increase the steam output to a certain extent, reduce the distribution density of the steam plug to some degree, and can be adapted to the distribution design of the fine holes on the steam plug. It is also compatible with wrench-like tooling specifically designed for rotating the steam plug, providing another type of optional steam plug assembly and disassembly design.

[0011] As a preferred embodiment, the steam output holes located in the upper mold assembly and the lower mold assembly are staggered. This design optimizes the distribution of steam output holes in the mold, with the steam output holes of the upper and lower molds being staggered rather than directly aligned, ensuring more uniform heating of the blank and enabling the parts to achieve better stretching and forming effects under steam baking.

[0012] As a preferred embodiment, the spacing between adjacent steam output holes on the same mold housing is 60mm-80mm. This design optimizes the spacing between adjacent steam output holes on the mold housing, ensuring that the steam output from each steam output hole can maximize the heating effect on the billet within this range. This avoids wasting heat due to overly dense distribution, or causing uneven stretching due to insufficient local heating temperature caused by overly sparse distribution.

[0013] As a preferred embodiment, the mold housing of the upper mold assembly is provided with a frame-shaped isolation boss protruding in the mold closing direction at the edge of its molding end face, and each of the steam output holes of the upper mold assembly is located within the space surrounded by the frame-shaped isolation boss; the mold housing of the lower mold assembly is provided with a frame-shaped isolation groove with the same shape as the frame-shaped isolation boss on its molding end face, which is used to isolate the space for steam output on the mold when the upper mold assembly and the lower mold assembly are closed, by the frame-shaped isolation boss being embedded in the frame-shaped isolation groove.

[0014] This design primarily addresses the issue of steam overflowing from the mold seam during the molding process, which can easily cause burns to operators. To prevent this, a raised, frame-shaped isolation boss is installed on the molding end face of the upper mold assembly, surrounding the area where each steam outlet is located. Correspondingly, a frame-shaped isolation groove with the same contour shape is installed on the end face of the lower mold assembly. When the upper and lower mold assemblies are closed, the frame-shaped isolation boss can be embedded into the frame-shaped isolation groove to form a concave-convex fit, thereby completely isolating the area where the steam outlet is located from the external space, preventing steam leakage, and effectively reducing the risk of steam burns to operators.

[0015] As a preferred embodiment, the mold housing of one of the upper or lower mold components has a frame-shaped baffle connected to its outer side wall, surrounding its forming end face, to shield the mold seam during mold closing. To further enhance the safety of the mold seam position based on the above design, in addition to the interlocking of frame-shaped isolation bosses and frame-shaped isolation grooves during mold closing, a surrounding frame-shaped baffle is further provided on the edge of one of the mold housings. This structure serves as supplementary protection, effectively blocking any steam that may overflow during mold opening, thus preventing burns.

[0016] As a preferred embodiment, the upper mold assembly and the lower mold assembly are each provided with a control valve group on the outer wall of their respective mold housings for controlling steam output. This control valve group is connected to the steam pipeline network. This design addresses the steam pipeline network hidden within the mold housing by providing a control valve group that can control the on / off state of the pipeline network and the timing of steam output. These valves can be manual or automated in conjunction with a logic control circuit.

[0017] As a preferred embodiment, the steam plug is a brass cylinder. Using brass for the steam plug facilitates thread forming, effectively improving thread processing efficiency, and the material is suitable for the subsequent finishing of the molded end face after the steam plug is inserted. Attached Figure Description

[0018] Figure 1 A schematic diagram of the upper mold assembly of a long fiber steam forming mold provided by this utility model;

[0019] Figure 2 for Figure 1 A partially enlarged structural diagram of the upper and middle mold components;

[0020] Figure 3 A schematic diagram of the lower mold assembly of a long fiber vapor forming mold provided by this utility model;

[0021] Figure 4 for Figure 3 A partially enlarged structural diagram of the lower and middle mold components;

[0022] Figure 5 for Figure 1 A schematic diagram of the steam piping network within the upper and middle mold assembly;

[0023] Figure 6 for Figure 1 A schematic diagram of the steam plug structure of the upper and middle mold assembly.

[0024] in, Figures 1-6 middle:

[0025] 1. Upper mold assembly; 2. Lower mold assembly; 3. Mold shell; 4. Steam plug; 4-1. Fine hole structure; 4-2. Parallel facets; 5. Frame baffle; 6. Frame isolation boss; 7. Control valve assembly; 8. Frame isolation groove; 9. Steam pipeline network. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] Before providing a detailed explanation of the working principle of this utility model, further clarification is needed regarding its description: In this description, terms such as "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, an indirect connection through an intermediate medium, or a welded connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] refer to Figures 1-6 The following examples illustrate this. Figure 1 A schematic diagram of the upper mold assembly of a long fiber steam forming mold provided by this utility model; Figure 2 for Figure 1 A partially enlarged structural diagram of the upper and middle mold components; Figure 3 A schematic diagram of the lower mold assembly of a long fiber vapor forming mold provided by this utility model; Figure 4 for Figure 3 A partially enlarged structural diagram of the lower and middle mold components; Figure 5 for Figure 1 A schematic diagram of the steam piping network within the upper and middle mold assembly; Figure 6 for Figure 1 A schematic diagram of the steam plug structure of the upper and middle mold assembly.

[0030] The long fiber steam forming mold provided in this embodiment includes an upper mold assembly 1 and a lower mold assembly 2 that cooperate with each other. Both the upper mold assembly 1 and the lower mold assembly 2 include a hollow mold shell 3. A steam pipeline network 9 is provided inside the mold shell 3. Multiple steam output holes are evenly distributed on the forming end face of the mold shell 3. The steam output holes are all connected to the steam pipeline network 9. A steam plug 4 is provided in each steam output hole to block the steam output hole. The steam plug 4 is cylindrical and has a fine hole structure 4-1 connecting its two end faces to pressurize and limit the flow of steam passing through the steam output hole.

[0031] This novel steam forming mold, based on traditional molds, improves the overall structure of the upper and lower molds by adopting a closed shell mold. The forming end face of the mold is located on one side of the shell, while the structure for transporting steam is a pipeline network. This structure isolates the steam space inside the upper or lower mold, greatly reducing the possibility of steam leakage. Furthermore, a steam plug 4 is added to the original steam outlet hole, transforming the originally large steam passage, which was easy to process and clean, into a fine-pore structure 4 on the steam plug 4. -1. This structure reduces the aperture through which steam can pass, decreases the steam output, and increases the steam output pressure, which is equivalent to improving the heat utilization rate of steam. The combined effect of the special pipe network steam passage design in the mold and the design of reducing the steam output orifice effectively reduces possible steam leakage and improves safety. It increases the output air pressure of the mold without increasing the mold thickness, improves the molding effect of the mold, and at the same time reduces the energy consumption for heating to generate steam. It effectively solves the technical problems of high energy consumption and high processing danger in the existing thermoforming process of long fiber materials.

[0032] In the technical solution provided in this embodiment, an internal thread is provided on the inner peripheral wall of the steam output hole, and a matching external thread is provided on the outer peripheral wall of the steam plug 4. This design provides a preferred design for the steam plug 4 to mate with the forming surface of the mold housing 3. Through threaded assembly, the structure is simple, the processing cost is low, and it has the advantages of easy assembly, easy disassembly and cleaning. It should be noted that a Φ14.5 fast milling cutter is used to process the steam output hole on the mold housing 3 to process the threaded bottom hole, and then tapping is performed, preferably to M16. Using the above method to process the steam output hole can improve the processing efficiency of such holes by 55%, save processing time, and reduce costs by 15%.

[0033] In the technical solution provided in this embodiment, the outer peripheral wall of one end of the steam plug 4 is provided with a parallel ridge surface 4-2 for assisting threaded installation. This design addresses the threaded fit between the steam plug 4 and the steam output hole. By providing the parallel ridge surface 4-2 on the outer wall of the end of the steam plug 4, it is easier to assist with assembly tools such as wrenches, thus facilitating the installation of the steam plug 4. Moreover, it is simpler to process and form compared to a general hexagonal head structure, and it is easier to allow the end of the steam plug 4 to sink into the forming end face of the mold housing 3 to form a flat processing and forming surface.

[0034] In the technical solution provided in this embodiment, the steam plug 4 is provided with multiple evenly distributed fine hole structures 4-1. This design further optimizes the design of the fine holes on the steam plug 4. Increasing the number of fine holes can increase the steam output to a certain extent, reduce the distribution density of the steam plug 4 to a certain degree, and can adapt to the distribution design of the fine holes on the steam plug 4. It is also compatible with a wrench-like tool for rotating the steam plug 4, providing another optional design for disassembling and assembling the steam plug 4. The preferred design is that each steam plug 4 is provided with 7 fine hole structures 4-1 arranged in a circular row, and the preferred hole diameter is Φ2.

[0035] In the technical solution provided in this embodiment, the steam output holes located in the upper mold assembly 1 and the lower mold assembly 2 are staggered. This design optimizes the distribution of steam output holes in the mold, with the steam output holes of the upper and lower molds being staggered rather than directly aligned, ensuring more uniform heating of the blank and enabling the parts to achieve better stretching and forming effects under steam baking.

[0036] In the technical solution provided in this embodiment, the spacing between adjacent steam output holes on the same mold housing 3 ranges from 60mm to 80mm. This design optimizes the spacing range between adjacent steam output holes on the mold housing 3. Within this spacing range, it can ensure that the steam output from each steam output hole can maximize the heating effect on the billet, avoiding heat waste due to overly dense distribution and uneven stretching due to insufficient local heating temperature caused by overly sparse distribution.

[0037] In the technical solution provided in this embodiment, the mold housing 3 of the upper mold assembly 1 is provided with a frame-shaped isolation boss 6 protruding in the mold closing direction at the edge of its molding end face, and each steam output hole of the upper mold assembly 1 is located within the space surrounded by the frame-shaped isolation boss 6; the mold housing 3 of the lower mold assembly 2 is provided with a frame-shaped isolation groove 8 with the same shape as the frame-shaped isolation boss 6 on its molding end face, which is used to isolate the space with steam output on the mold when the upper mold assembly 1 and the lower mold assembly 2 are closed, by embedding the frame-shaped isolation boss 6 into the frame-shaped isolation groove 8.

[0038] This design primarily addresses the issue of steam overflowing from the mold seam during the molding process, which could easily cause burns to operators. To prevent this, a raised frame-shaped isolation boss 6 is provided on the molding end face of the upper mold assembly 1, surrounding the area where each steam output hole is located. Correspondingly, a frame-shaped isolation groove 8 with the same outline shape is provided on the end face of the lower mold assembly 2. When the upper mold assembly 1 and the lower mold assembly 2 are closed, the frame-shaped isolation boss 6 can be embedded in the frame-shaped isolation groove 8 to form a concave-convex fit, thereby completely isolating the area where the steam output hole is located from the external space, preventing steam leakage, and effectively reducing the risk of steam burns to operators.

[0039] In the technical solution provided in this embodiment, the mold housing 3 of either the upper mold assembly 1 or the lower mold assembly 2 has a frame-shaped baffle 5 connected to its outer side wall, surrounding its forming end face, to shield the mold seam during mold closing. To further enhance the safety of the mold seam position based on the above-mentioned design, in addition to the interlocking of the frame-shaped isolation boss 6 and the frame-shaped isolation groove 8 during mold closing, a surrounding frame-shaped baffle 5 is further provided on the edge of one of the mold housings 3. This structure serves as supplementary protection, and can also effectively block any steam that may overflow during mold opening, preventing burns.

[0040] In the technical solution provided in this embodiment, the upper mold assembly 1 and the lower mold assembly 2 are provided with control valve groups 7 for controlling steam output on the outer wall of their respective mold housing 3. The control valve groups 7 are connected to the steam pipeline network 9. This design addresses the steam pipeline network 9 hidden inside the mold housing 3 by providing control valve groups 7 that can control the on / off state of the pipeline network and the timing of steam output. These valves can be manual or automated valves in conjunction with a logic control circuit.

[0041] In the technical solution provided in this embodiment, the steam plug 4 is a brass cylinder. The use of brass for the steam plug 4 facilitates thread forming, effectively improving thread processing efficiency. Furthermore, the material is suitable for the subsequent finishing of the molded end face after the steam plug 4 is installed.

[0042] Although the disclosure is as stated above, the scope of protection of this disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this utility model.

Claims

1. A long fiber steam forming mold characterized by, The assembly includes an upper mold assembly (1) and a lower mold assembly (2) that cooperate with each other. Both the upper mold assembly (1) and the lower mold assembly (2) include a hollow mold shell (3). A steam pipeline network (9) is provided inside the mold shell (3). Multiple steam output holes are evenly distributed on the forming end face of the mold shell (3). The steam output holes are all connected to the steam pipeline network (9). Each steam output hole is provided with a steam plug (4) for blocking the steam output hole. The steam plug (4) is cylindrical and has a fine hole structure (4-1) connecting its two end faces to pressurize and limit the flow of steam passing through the steam output hole.

2. The long fiber steam forming mold according to claim 1, wherein An internal thread is provided on the inner peripheral wall of the steam output hole, and a matching external thread is provided on the outer peripheral wall of the steam plug (4).

3. The long fiber steam forming mold according to claim 2, characterized in that, The outer peripheral wall of one end of the steam plug (4) is provided with a parallel ridge (4-2) for assisting threaded installation.

4. The long fiber steam forming mold according to claim 1, characterized in that, The steam plug (4) is provided with a plurality of evenly distributed fine pore structures (4-1).

5. The long fiber steam forming mold according to claim 1, characterized in that, The steam output holes located in the upper mold assembly (1) and the lower mold assembly (2) are staggered with each other.

6. The long fiber steam forming mold according to claim 1, characterized in that, The spacing between adjacent steam output holes on the same mold housing (3) ranges from 60mm to 80mm.

7. The long fiber steam forming mold according to any one of claims 1-6, characterized in that, The mold housing (3) of the upper mold assembly (1) is provided with a frame-shaped isolation boss (6) protruding in the mold closing direction at the edge of its molding end face. Each of the steam output holes of the upper mold assembly (1) is located within the space surrounded by the frame-shaped isolation boss (6). The mold housing (3) of the lower mold assembly (2) is provided with a frame-shaped isolation groove (8) with the same shape as the frame-shaped isolation boss (6) on its molding end face. When the upper mold assembly (1) and the lower mold assembly (2) are molded together, the frame-shaped isolation boss (6) is embedded in the frame-shaped isolation groove (8) to isolate the space with steam output on the mold.

8. The long fiber steam forming mold according to claim 7, characterized in that, The mold housing (3) of either the upper mold assembly (1) or the lower mold assembly (2) has a frame-shaped baffle (5) connected to its outer side wall to surround its forming end face, which is used to block the mold seam when the mold is closed.

9. The long fiber steam forming mold according to claim 1, characterized in that, The upper mold assembly (1) and the lower mold assembly (2) are provided with control valve groups (7) for controlling steam output on the outer side wall of their respective mold housings (3), and the control valve groups (7) are connected to the steam pipeline network (9).

10. The long fiber steam forming mold according to claim 1, characterized in that, The steam plug (4) is a column made of brass.

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