Composite hot press forming die for part machining

Abstract

The utility model relates to composite material forming technical field especially relates to a kind of composite hot press forming mould for parts processing, including mount, the mount top middle position is provided with lower mould, the mount top is firmly connected with multiple first guide rod, the first guide rod is commonly slidably provided with slide, the slide bottom middle position is provided with upper mould, the lower mould and the upper mould inside are all embeddedly provided with heating plate. Through the automatic positioning structure of electric guide rail, slider, sliding plate and positioning plate that mould is set in the lower mould both sides, composite material can be accurately clamped and limited before hot pressing, effectively prevent its displacement or deviation in pressing process, to significantly improve forming precision and product consistency.

Description

Technical Field

[0001] This utility model relates to the field of composite material molding technology, and in particular to a composite hot pressing molding die for parts processing. Background Technology

[0002] With the rapid development of modern manufacturing, especially in high-end manufacturing fields such as automobiles, aerospace, electronic equipment, and precision machinery, the demand for high-performance composite material parts is increasing. Composite materials, due to their excellent properties such as light weight, high strength, corrosion resistance, and fatigue resistance, are widely used in structural and functional components. However, because their material composition and physical properties differ significantly from traditional metal materials, higher requirements are placed on the precision of the mold system, temperature control, and pressure distribution during the molding process. Hot pressing, as one of the important processes for composite material molding, uses the synergistic effect of heating and pressurization to induce physical or chemical changes in the material, thereby obtaining workpieces with the desired shape and properties. This process is widely used in the molding and processing of composite materials such as carbon fiber reinforced plastics and glass fiber reinforced plastics.

[0003] Patent CN217226756U discloses a carbon fiber composite material molding device. This device includes a lower mold base with a lifting mold base above it. An adjustment mechanism is connected to the top of the lifting mold base. The lower mold base includes a fixing block and a lower mold, with the bottom sides of the lower mold fixedly connected to the fixing block. This structural design effectively improves the efficiency of hot pressing of composite materials and has a preheating function, ensuring that heat is evenly transferred to the lower mold core before pressing, preventing damage to the lower mold core due to impact when the upper mold core descends. Simultaneously, the device also has a rapid cooling function, maintaining the upper mold core's shape during the cooling and solidification process. The closed state of the lower mold core helps prevent defects such as warping and shrinkage of composite materials after cooling, thereby significantly improving product quality and reducing scrap rate. Although the device has made some progress in heating uniformity, hot pressing efficiency and cooling control, there are still some shortcomings in practical applications. First, the device does not have a dedicated positioning structure, and composite materials are prone to displacement or shifting during placement and pressing, affecting the final molding accuracy. Second, due to the lack of positioning function, it relies on manual operation for material positioning, which is not only inefficient but also prone to introducing human error, making it difficult to meet the needs of large-scale production of high-precision composite parts.

[0004] Therefore, there is an urgent need to provide a composite hot pressing mold for parts processing with automatic positioning function. Utility Model Content

[0005] In order to overcome the shortcomings of existing composite material molding dies and the lack of automated positioning function, which makes them prone to displacement or deviation during the pressing process and affect molding accuracy, this utility model provides a composite hot pressing molding die for parts processing with automatic positioning function.

[0006] To address the aforementioned issues, this utility model employs the following technical solution: a composite hot-press forming mold for parts processing, comprising a mounting base, a lower mold disposed at the top center of the mounting base, multiple first guide rods fixedly connected to the top of the mounting base, a slide block slidably disposed on the first guide rods, an upper mold disposed at the bottom center of the slide block, heating plates embedded inside both the lower mold and the upper mold, a cylinder mounted on the mounting base, the movable rod of the cylinder connected to the top of the upper mold, symmetrically distributed electric guide rails on both sides of the top of the mounting base, a slider slidably disposed on each electric guide rail, a sliding plate fixedly connected to the slider, and a positioning plate fixedly connected to adjacent sliding plates.

[0007] Optionally, the lower mold is fixed to two sides near the positioning plate with symmetrically distributed second guide rods, which pass through the positioning plate and form a sliding connection with it.

[0008] Optionally, a placement seat is provided on both sides of the lower mold, and a symmetrically distributed fixed seat is fixedly connected to both sides of the top of the upper mold. A slide rod is slidably provided on the fixed seat, and a pressure plate is fixedly connected to the bottom end of the adjacent slide rods. An elastic element is sleeved on the slide rod, and the two ends of the elastic element are fixedly connected to the fixed seat and the pressure plate, respectively.

[0009] Optionally, the bottom of the pressure plate is provided with an anti-slip pad.

[0010] Optionally, a detector is provided on the front side of the lower mold.

[0011] Optionally, symmetrically distributed warning devices are provided on the front side of the lower mold.

[0012] Compared with the prior art, the present invention has the following technical effects: 1. By setting an automatic positioning structure consisting of electric guide rails, sliders, sliding plates and positioning plates on both sides of the lower mold, the composite material can be accurately clamped and limited before hot pressing, effectively preventing displacement or shifting during the pressing process, thereby significantly improving molding accuracy and product consistency.

[0013] 2. By setting up a pre-compression structure consisting of a fixed seat, slide bar, elastic element and pressure plate in the upper mold, pressure can be applied to both ends of the composite material before hot pressing to flatten it, effectively preventing molding defects caused by material bending or warping and improving the quality of finished products. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the mounting base, lower mold, and upper mold components of this utility model.

[0016] Figure 3 This is a three-dimensional schematic diagram of the slider, sliding plate, and positioning plate components of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the components of this utility model, including the placement seat, fixing seat, and sliding rod.

[0018] Figure 5 This is a three-dimensional structural diagram of the anti-slip mat, detector, and warning device components of this utility model.

[0019] In the attached drawings, the following are the reference numerals: 1: mounting base, 101: first guide rod, 2: lower mold, 3: slide block, 4: upper mold, 5: heating plate, 6: cylinder, 7: electric guide rail, 8: slider, 9: sliding plate, 10: positioning plate, 11: second guide rod, 12: placement base, 13: fixed base, 14: slide rod, 15: pressure plate, 16: elastic element, 17: anti-slip pad, 18: detector, 19: warning device. Detailed Implementation

[0020] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1: Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 5A composite hot-press forming mold for parts processing includes a mounting base 1. A lower mold 2 is disposed at the top center of the mounting base 1. Four vertically arranged first guide rods 101 are fixed to the top of the mounting base 1. A slide block 3 is slidably disposed on the first guide rods 101. An upper mold 4 is disposed at the bottom center of the slide block 3. Heating plates 5 are embedded inside both the lower mold 2 and the upper mold 4 to provide the required temperature for the mold during hot pressing. A cylinder 6 is mounted on the mounting base 1. The movable rod of the cylinder 6 is connected to the top of the upper mold 4 to drive the upper mold 4 to move up and down along the first guide rods 101 to realize the mold opening and closing actions. Electric guide rails 7 are symmetrically distributed on the left and right sides of the top of the mounting base 1. A slider 8 is slidably disposed on each of the electric guide rails 7. A sliding plate 9 is fixedly connected to the slider 8. Two adjacent left and right sliding plates 9 are jointly fixedly connected to a positioning plate 10 for automatic clamping and positioning of the composite material workpiece. The lower mold 2 is fixedly connected to the front and rear sides near the positioning plate 10 with symmetrically distributed second guide rods 11. The second guide rods 11 pass through the positioning plate 10 and form a sliding connection with it to enhance the stability of the positioning plate 10 during movement. A detector 18 is provided on the front side of the lower mold 2 to monitor the internal temperature of the mold in real time and feed the collected data back to the external control unit to realize intelligent monitoring and adjustment of the hot pressing process. A warning device 19 is provided on the front side of the lower mold 2, which is electrically connected to the detector 18 and is used to issue an audible and visual alarm signal when an abnormal high temperature is detected to remind the operator to deal with it in time.

[0022] In use, the composite material to be processed is first placed on the lower mold 2. Then, the electric guide rail 7 is activated, which drives the slider 8 to move inward along the guide rail. This drives the sliding plate 9 and the positioning plate 10 to move inward synchronously, so that the positioning plate 10 clamps the composite material and achieves automatic limiting and fixing. This design effectively prevents the composite material from shifting or misaligning during the subsequent hot pressing process, thereby ensuring molding accuracy. After the positioning operation is completed, the heating plate 5 and the cylinder 6 are turned on. The heating plate 5 heats the upper mold 4 and the lower mold 2 evenly, so that the mold reaches the set temperature. At the same time, the cylinder 6 extends its movable rod, which drives the upper mold 4 to move downward along the first guide rod 101 and close with the lower mold 2, applying pressure to the composite material to achieve hot pressing molding. During the entire hot pressing process, the positioning plate 10 continues to clamp the composite material, ensuring that it remains in a stable position under high temperature and high pressure conditions. After the hot pressing is completed, the cylinder 6 drives the upper mold 4 to reset, and the electric guide rail 7 drives the sliding plate 9 to move outward, so that the positioning plate 10 releases the workpiece, making it easy to remove the finished product.

[0023] Example 2: Based on Example 1, please refer to... Figure 4 and Figure 5The lower mold 2 has placement seats 12 on both the left and right sides to support the ends of the composite material. The upper mold 4 has fixed seats 13 symmetrically distributed on both the left and right sides of the top. The fixed seats 13 are slidably mounted with slide rods 14. The bottom ends of two adjacent slide rods 14 are fixed with pressure plates 15. The pressure plates 15 are located directly above the lower mold 2 and correspond to the positions of the placement seats 12. The slide rods 14 are fitted with elastic elements 16. The upper and lower ends of the elastic elements 16 are fixedly connected to the fixed seats 13 and the pressure plates 15, respectively. The bottom of the pressure plates 15 is provided with anti-slip pads 17. The anti-slip pads 17 are made of flexible materials with a high coefficient of friction, such as rubber or silicone, to increase the friction between the pressure plates 15 and the composite material and prevent the material from sliding or misaligning during hot pressing.

[0024] During the hot pressing process, when the cylinder 6 drives the upper mold 4 to move downward to the set position, the pressure plate 15 first contacts the placement seat 12 on the lower mold 2 and applies initial pressure to the end of the composite material placed on it, flattening it. This effectively avoids deformation and misalignment of the composite material due to bending or warping during subsequent hot pressing. As the hot pressing process continues, the upper mold 4 moves further downward, and the pressure plate 15 moves downward relative to the fixed seat 13 under the guidance of the slide rod 14. The elastic element 16 is compressed to absorb some of the impact force and maintain continuous pressure. At this time, the mold closes and begins the hot pressing operation on the composite material. After the hot pressing is completed, the cylinder 6 drives the upper mold 4 to rise and reset. After a certain gap is formed between the upper mold 4 and the lower mold 2, the pressure plate 15 returns to the initial position under the elastic force of the elastic element 16, completing one complete hot pressing cycle.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A composite hot pressing mold for parts processing, comprising a mounting base (1), a lower mold (2) disposed at the top center of the mounting base (1), a plurality of first guide rods (101) fixedly connected to the top of the mounting base (1), a slide block (3) slidably disposed on the first guide rods (101), an upper mold (4) disposed at the bottom center of the slide block (3), a heating plate (5) embedded inside both the lower mold (2) and the upper mold (4), a cylinder (6) mounted on the mounting base (1), the movable rod of the cylinder (6) being connected to the top of the upper mold (4), characterized in that: The mounting base (1) has symmetrically distributed electric guide rails (7) on both sides of its top. Each electric guide rail (7) has a slider (8) that is slidably mounted on it. A sliding plate (9) is fixedly connected to the slider (8). The adjacent sliding plates (9) are fixedly connected to a positioning plate (10).

2. A composite hot pressing mold for parts processing according to claim 1, characterized in that: The lower mold (2) is fixed with symmetrically distributed second guide rods (11) on both sides near the positioning plate (10). The second guide rods (11) pass through the positioning plate (10) and form a sliding connection with it.

3. A composite hot pressing mold for parts processing according to claim 2, characterized in that: The lower mold (2) is provided with a placement seat (12) on both sides, and the upper mold (4) is fixed with symmetrically distributed fixed seats (13) on both sides of the top. The fixed seats (13) are slidably provided with slide rods (14), and the bottom ends of the adjacent slide rods (14) are fixed with pressure plates (15). The slide rods (14) are fitted with elastic elements (16), and the two ends of the elastic elements (16) are fixedly connected to the fixed seats (13) and the pressure plates (15) respectively.

4. A composite hot pressing mold for parts processing according to claim 3, characterized in that: The bottom of the pressure plate (15) is provided with an anti-slip pad (17).

5. A composite hot pressing mold for parts processing according to claim 4, characterized in that: A detector (18) is provided on the front side of the lower mold (2).

6. A composite hot pressing mold for parts processing according to claim 5, characterized in that: The lower mold (2) is provided with symmetrically distributed warning devices (19) on its front side.

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