Composite SMC (Sheet Molding Compound) forming die

Abstract

A composite SMC forming die comprises a box body and a die cavity, the top face of the box body is matched with a cover plate, a sliding groove is formed in the cover plate, the sliding groove of the cover plate is matched with a scraping mechanism, the scraping mechanism comprises a threaded rod, a scraping plate is arranged at the bottom end of the threaded rod, a limiting mechanism is installed in the box body, the limiting mechanism comprises two transverse plates, and two side plates are matched between the two transverse plates. The mold cavity is arranged between the two side plates, and the scraping plate is attached to the top face of the mold cavity. The scraping mechanism is installed on a cover plate at the top end of the box body, a scraping plate of the scraping mechanism can move up and down on a sliding block through a threaded rod, so that the scraping plate can be attached to the top face of the mold cavity, the sliding block slides on a sliding groove, and it is guaranteed that the scraping plate can clean redundant overflowing liquid on the mold cavity; irregular flashes and burrs are prevented from being generated after the overflow liquid is cooled and formed, and the forming quality of the composite SMC is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of composite SMC forming molds, in particular to a composite SMC forming mold. Background Technique

[0002] Composite SMC is a composite material with excellent performance. It is mainly made by mixing raw materials such as glass fiber, resin, and filler into a sheet-shaped prepreg, and then formed by heating and compression. SMC composite material has a lower density. Despite the low density, the strength of SMC composite material is very high. This material has excellent corrosion resistance and can remain stable for a long time under harsh environmental conditions. SMC composite material is easy to process and form. In the electrical industry, SMC composite material shows good electrical insulation performance. The high-flame-retardant SMC material formed by multi-layer composite integration is favored in components such as the shells, brackets, and insulating parts of electrical appliances and electronic products due to its high flame retardancy. Different plastic forming methods require the use of forming molds with different principles and structural characteristics.

[0003] When the existing forming mold for composite SMC is used for die pressing, overflow liquid will appear on the top surface of the forming mold. After the overflow liquid cools, irregular flash and burrs are likely to be generated, thus affecting the appearance quality of the composite SMC after forming. The irregular burrs are not only time-consuming and laborious to remove, but also increase the manufacturing cost of the composite SMC forming. Summary of the Invention

[0004] The purpose of the utility model is to provide a composite SMC forming mold. A scraping mechanism is installed on the top cover plate of the box body. The scraping plate of the scraping mechanism fits on the top surface of the mold cavity. By sliding the slider through the chute, the scraping plate can clean the overflow liquid on the mold cavity inside the box body, solving the problem that overflow liquid will appear on the top surface of the forming mold, and irregular flash and burrs are likely to be generated after the overflow liquid cools, thus affecting the appearance quality of the composite SMC after forming.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A composite SMC forming mold includes a box body and a mold cavity. The top surface of the box body is fitted with a cover plate. A chute is opened on the cover plate. A scraping mechanism is fitted on the chute of the cover plate. The scraping mechanism includes a threaded rod. A scraping plate is arranged at the bottom end of the threaded rod. A limiting mechanism is installed inside the box body. The limiting mechanism includes two cross plates. Two side plates are fitted between the two cross plates. The mold cavity is arranged between the two side plates. The scraping plate fits on the top surface of the mold cavity.

[0007] Preferably, an electric push rod is arranged on the cover plate. The telescopic end of the electric push rod is installed, and the pressing plate acts inside the mold cavity.

[0008] Preferably, a slider is in threaded engagement with the threaded rod, and the slider is engaged with the chute.

[0009] Preferably, a bearing is installed at the bottom end of the threaded rod, a ring is installed on the outer ring of the bearing, and the ring is installed on the scraping plate.

[0010] Preferably, a row of through holes are formed in the two cross plates, and inserting rods are arranged on the row of through holes.

[0011] Preferably, the inserting rods extend to the two side plates through the row of through holes.

[0012] The utility model has the following beneficial effects:

[0013] 1. A scraping mechanism is installed on the top cover plate of the box body. The scraping plate of the scraping mechanism can move up and down on the slider through the threaded rod, so that the scraping plate can be attached to the top surface of the mold cavity. The slider is slid on the chute to ensure that the scraping plate can clean the excess overflow liquid on the mold cavity, avoid the generation of irregular flash and burrs after the overflow liquid cools and solidifies, and ensure the molding quality of the composite SMC.

[0014] 2. Two cross plates are installed inside the box body, two side plates are arranged between the two cross plates, and the two side plates are attached to the two side walls of the mold cavity to realize the limiting operation of the mold cavity on the inner bottom surface of the box body, ensure the placement of the mold cavity inside the box body, avoid the deviation of the mold cavity when placed inside the box body, and at the same time enable different sizes and specifications of mold cavities to be placed inside the box body, ensuring the molding operation of different composite SMCs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the mold;

[0016] Figure 2 is a schematic structural diagram of the mold in a state where the cover plate and the box body are separated;

[0017] Figure 3 is a schematic structural diagram of the scraping mechanism;

[0018] Figure 4 is a schematic transverse internal structure diagram of the mold.

[0019] In the figure: 1. Box body; 2. Mold cavity; 3. Cover plate; 301. Chute; 4. Scraping mechanism; 401. Slider; 402. Threaded rod; 403. Bearing; 404. Ring; 405. Scraping plate; 5. Electric push rod; 6. Pressing plate; 7. Limiting mechanism; 701. Cross plate; 702. Through hole; 703. Side plate; 704. Inserting rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0021] Referring to Figures 1-4 , a composite SMC molding die, including a box body 1 and a mold cavity 2. The top surface of the box body 1 is fitted with a cover plate 3. An electric push rod 5 is arranged on the cover plate 3. The electric push rod uses a DC electric push rod with the model 5NKLA22. An installation 6 is arranged on the telescopic end of the electric push rod 5. The pressing plate 6 acts inside the mold cavity 2 to perform a pressing and forming operation on the SMC production material inside the mold cavity 2.

[0022] A chute 301 is opened on the cover plate 3, and a scraping mechanism 4 is fitted on the chute 301 of the cover plate 3. The scraping mechanism 4 includes a threaded rod 402. A slider 401 is in threaded cooperation with the threaded rod 402. The slider 401 is fitted on the chute 301. The slider 401 and the chute 301 are in a cross shape. A scraper 405 is arranged at the bottom end of the threaded rod 402. A bearing 403 is installed at the bottom end of the threaded rod 402. A ring 404 is installed on the outer ring of the bearing 403. The ring 404 is installed on the scraper 405. The scraper 405 is attached to the top surface of the mold cavity 2. The scraper 405 can move up and down on the slider 401 through the threaded rod 402, so that the scraper 405 can be attached to the top surface of the mold cavity 2. Slide the slider 401 on the chute 301 to ensure that the scraper 405 can clean the excess overflow liquid on the mold cavity 2.

[0023] A water inlet pipe 5 and a water outlet pipe 6 are connected to the box body 1. The box body 1 inputs external water through the water inlet pipe 5, so that cooling water can be stored inside the box body 1. The cooling water inside the box body 1 can be discharged through the water outlet pipe 6. A limiting mechanism 7 is installed inside the box body 1. The limiting mechanism 7 includes two cross plates 701. A row of through holes 702 are opened on the two cross plates 701. A plug rod 704 is arranged on the row of through holes 702. The plug rod 704 extends to the two side plates 703 through the row of through holes 702. Two side plates 703 are fitted between the two cross plates 701. The mold cavity 2 is arranged between the two side plates 703. Slide the two side plates 703 between the two cross plates 701. The two side plates 703 are attached to the two side walls of the mold cavity 2. Insert the plug rod 704 into the two side plates 703 through the through holes 702 to realize the limiting operation of the mold cavity 2 on the bottom surface inside the box body 1 and ensure the placement of the mold cavity 2 inside the box body 1.

[0024] When using a mold to perform a molding operation on a composite SMC, place the mold cavity 2 inside the box body 1, slide the two side plates 703, and fix the two side plates 703 between the two cross plates 701 through the insertion rods 704, so as to limit and fix the mold cavity 2 inside the box body 1. Then place the composite SMC inside the mold cavity 2, cover the cover plate 3 on the top surface of the box body 1, fit the slider 401 on the chute 301, rotate the threaded rod 402 of the leveling mechanism 4, so that the threaded rod 402 can move up and down through the bottom bearing 403 and the scraping plate 405 installed on the ring 404. After the scraping plate 405 fits on the top surface of the mold cavity 2, move the slider 401 through the chute 301, so that the leveling mechanism 4 can move on the cover plate 3, thereby enabling the scraping plate 405 to clean the excess overflow liquid on the top surface of the mold cavity 2, avoiding the generation of irregular flash and burrs after the overflow liquid cools and solidifies, ensuring the molding quality of the composite SMC. Start the electric push rod 5, so that the pressing plate 6 can act inside the mold cavity 2 to complete the molding operation of the composite SMC.

[0025] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A composite SMC molding mold, comprising a box body (1) and a mold cavity (2), wherein the top surface of the box body (1) is matched with a cover plate (3), and is characterized in that: The cover plate (3) is provided with a slide groove (301), the slide groove (301) of the cover plate (3) is matched with a scraping mechanism (4), the scraping mechanism (4) comprises a threaded rod (402), a scraper (405) is arranged at the bottom end of the threaded rod (402), a limiting mechanism (7) is installed inside the box body (1), the limiting mechanism (7) comprises two transverse plates (701), two side plates (703) are matched between the two transverse plates (701), the mold cavity (2) is arranged between the two side plates (703), and the scraper (405) is attached to the top surface of the mold cavity (2).

2. A composite SMC molding die according to claim 1, characterized in that: An electric push rod (5) is arranged on the cover plate (3), and a (6) is installed on the telescopic end of the electric push rod (5), and the pressing plate (6) acts on the inside of the mold cavity (2).

3. A composite SMC molding die according to claim 1, characterized in that: The threaded rod (402) is threadedly engaged with the slider (401), and the slider (401) is engaged with the slide groove (301).

4. A composite SMC molding die according to claim 3, characterized in that: A bearing (403) is installed at the bottom end of the threaded rod (402), a ring (404) is installed on the outer ring of the bearing (403), and the ring (404) is installed on the scraper (405).

5. The composite SMC molding die according to claim 1, characterized in that: A row of through holes (702) is formed on the two transverse plates (701), and an insertion rod (704) is disposed on one row of the through holes (702).

6. A composite SMC molding die according to claim 5, characterized in that: The insertion rod (704) extends to the two side plates (703) through a row of through holes (702).

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