Disc mold pressing mold

Abstract

The utility model discloses a disc mold pressing mold, belongs to the technical field of mold pressing molds, and solves the technical problems that a disc product formed by an existing disc mold is low in strength and not easy to demold. The mold specifically comprises an upper mold plate, a lower mold plate, a core mold and a side sliding block, four side sliding blocks are arranged at the top of the lower mold plate, a mold pressing cavity is formed among the four side sliding blocks, and a core mold is arranged in the mold pressing cavity; an upper die plate is fixed to the tops of the four side sliding blocks. According to the utility model, the four side sliding blocks are designed between the upper template and the lower template, and a disc product is formed among the four side sliding blocks; when the pressing machine pressurizes the upper die plate and the lower die plate, the four side sliding blocks provide pressure for the side wall of the disc product, the obtained disc product is high in side wall compactness and uniform in thickness, and the overall strength of the disc product is high. And the four side sliding blocks further facilitate demolding work after the disc product is formed.

Description

Technical Field

[0001] The utility model relates to the technical field of compression molds, in particular to a disc compression mold. Background Art

[0002] Compression molding is a common process for composite material forming. Its main principle is to form products through the limiting effect of the mold cavity in the mold. The compression molding process is suitable for processing products with some simple structures, such as discs. The existing disc compression molding method is to lay a single-layer sheet of prepreg of the composite material between the upper template and the lower template, and then close the upper template and the lower template and put them into a press to cure and form under the pressure and temperature of the press. However, since the thickness of the prepreg sheet during laying is thicker than the product size, the sheet at the side wall position of the disc will be rubbed during the mold closing process, resulting in yarn clamping, incomplete mold closing, inaccurate control of the product thickness dimension, serious lack of glue on the side of the product, etc. When the press provides pressure, it can only provide the mold closing pressure for the upper template and the lower template, and for the side wall position of the disc, no side wall pressure can be provided. Therefore, the adhesion of the composite material on the side wall after the disc is formed is low, and the side wall strength of the obtained disc product is low. On the other hand, due to the different thermal expansion coefficients of the composite material and the mold material, the disc is often stuck in the upper mold cavity and difficult to take out when it is cooled and formed. Summary of the Utility Model

[0003] Aiming at the deficiencies existing in the prior art, the utility model provides a disc compression mold, which solves the technical problems that the disc products formed by the existing disc molds have low strength and are not easy to demold.

[0004] A disc compression mold includes an upper template, a lower template, a core mold and side sliders; four side sliders are arranged at the top of the lower template, a compression cavity is formed among the four side sliders, and a core mold is arranged in the compression cavity; the upper template is fixed at the top of the four side sliders.

[0005] In this solution, four side sliders are designed between the upper template and the lower template, and the disc product is formed among the four side sliders. When the press pressurizes the upper template and the lower template, the four side sliders provide pressure for the side wall of the disc product, and the obtained disc product has high side wall density, uniform thickness and high overall strength. The four side sliders also facilitate the demolding of the disc product after it is formed.

[0006] Further, a wedge-shaped groove is formed at the top of the side slider, and a wedge-shaped block is embedded in the wedge-shaped groove; bolt holes are formed on the upper template, and upper template fastening bolts are assembled in the bolt holes, and the upper template fastening bolts pass through the bolt holes of the upper template and are connected with the wedge-shaped block.

[0007] In this solution, the wedge-shaped block and the upper template are connected into one body through the upper template fastening bolts. After laying the prepreg sheet, the upper template can be directly closed, which is convenient to use.

[0008] Further, the wedge-shaped groove is a variable-diameter groove body, and the cross-sectional area of the variable-diameter groove body decreases along the direction in which the wedge-shaped block is inserted;

[0009] Four wedge-shaped blocks are inserted into four wedge-shaped grooves, pushing the four wedge-shaped blocks to converge towards the middle.

[0010] In this solution, when the press provides pressure to pressurize the upper template and the lower template, the wedge-shaped blocks at the bottom of the upper template drive the four side sliders to contract towards the core mold through the variable-diameter action of the wedge-shaped grooves, converting the vertical pressure provided by the press into the pressure perpendicular to the side wall of the disc product, and then pressurizing the side wall of the disc product, avoiding the delamination of the prepreg sheets due to the lack of vertical pressure on the side wall during the molding of the disc product, resulting in the lack of glue on the surface of the disc.

[0011] Further, strip-shaped grooves are provided at the bottom of the side sliders and the top of the lower template, and the cavities of the two strip-shaped grooves form a guiding groove; a guiding block is embedded in the guiding groove.

[0012] In this solution, the guiding block can define the moving direction of the side slider, making it move in a direction perpendicular to the tangent of the side wall of the disc product.

[0013] Further, lower template fastening bolts are provided on the lower template, and the lower template fastening bolts pass through the bolt holes of the lower template and are connected to the guiding block.

[0014] Further, a circular groove is provided inside the lower template, and a top ring is provided in the circular groove; the core mold is arranged inside the top ring.

[0015] In this solution, the top ring is used for forming the edge of the disc product.

[0016] Further, core mold fastening bolts are provided on the lower template, and the core mold fastening bolts pass through the bolt holes of the lower template and are connected to the core mold.

[0017] The beneficial effects of the present utility model are:

[0018] In the disc molding die provided by the present utility model, four side sliders are designed between the upper template and the lower template. When the press moves up and down to pressurize the upper template and the lower template, the four side sliders move closer to the middle under the push of the wedge-shaped blocks, providing side pressure for the side wall of the disc product; the side sheets of the processed disc product are dense and have high strength. Compared with the existing molding method of directly closing the upper template and the lower template for pressurization, there will be no problems such as sheet delamination and lack of glue on the surface. And by designing four side sliders, when the disc product is demolded after molding, the four side sliders can be removed successively, and the demolding is easy. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of the disc molding die of the present utility model;

[0020] Figure 2 This is an exploded view of the disc molding die of the present utility model;

[0021] Figure 3 This is a schematic structural view of the disc molding die of the present utility model with the upper template removed;

[0022] Figure 4 This is a schematic structural view of the disc molding die of the present utility model with the upper template and the core mold removed;

[0023] Figure 5 This is a schematic structural view of another perspective of the disc molding die of the present utility model.

[0024] Reference numerals:

[0025] 1. Upper template; 2. Wedge block; 3. Disc product; 4. Core mold; 5. Side slider; 6. Ejector ring; 7. Guide block; 8. Lower template; 9. Upper template fastening bolt; 10. Lower template fastening bolt; 11. Core mold fastening bolt; Detailed implementation manners

[0026] The following further describes the present utility model in conjunction with the accompanying drawings and specific embodiments. The following describes the specific implementation manners of the present utility model to facilitate those skilled in the art to understand the present utility model. However, it should be clear that the present utility model is not limited to the scope of the specific implementation manners. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present utility model defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present utility model are within the scope of protection.

[0027] As Figure 1 and Figure 2 shown, this embodiment provides a disc molding die, which can provide lateral pressure for the disc product 3 during molding, so that the side wall thickness of the molded product is uniform and the density is high; specifically, it includes:

[0028] Upper template 1, lower template 8, core mold 4 and side slider 5;

[0029] Among them, four side sliders 5 are arranged on the top of the lower template 8, a molding cavity is formed among the four side sliders 5, and a core mold 4 is arranged in the molding cavity; the disc product 3 is molded in the cavity between the four side sliders 5 and the core mold 4; the upper template 1 is fixed on the top of the four side sliders 5; the press applies pressure to the upper template 1 and the lower template 8, and the four side sliders 5 provide pressure for the side wall of the disc product 3, and the obtained disc product 3 has a uniform side wall thickness and high overall strength.

[0030] A wedge-shaped groove is formed at the top of the side slider 5, and a wedge-shaped block 2 is embedded in the wedge-shaped groove. Bolt holes are formed in the upper template 1, and upper template fastening bolts 9 are assembled in the bolt holes. The upper template fastening bolts 9 pass through the bolt holes of the upper template 1 and are connected to the wedge-shaped block 2. The wedge-shaped block 2 and the upper template 1 are connected as a whole by the upper template fastening bolts 9. After laying the prepreg sheet, the upper template 1 can be directly closed, which is convenient to use.

[0031] As Figure 3 shown, the wedge-shaped groove is a variable-diameter groove body, and the cross-sectional area of the variable-diameter groove body decreases along the direction in which the wedge-shaped block 2 is embedded. Four wedge-shaped blocks 2 are embedded in four wedge-shaped grooves, and the four wedge-shaped blocks 2 are pushed to converge towards the middle. When the press provides pressure to pressurize the upper template 1 and the lower template 8, the wedge-shaped block 2 at the bottom of the upper template 1 drives the four side sliders 5 to contract towards the core mold 4 through the variable-diameter action of the wedge-shaped groove, converting the vertical pressure provided by the press into a pressure perpendicular to the side wall of the disc product 3, and then pressurizing the side wall of the disc product 3, avoiding the delamination of the sheet caused by the lack of vertical pressure on the side wall during the molding of the disc product 3 and resulting in the lack of glue on the disc surface.

[0032] Strip-shaped grooves are formed at the bottom of the side slider 5 and the top of the lower template 8, and the cavities of the two strip-shaped grooves form a guide groove. A guide block 7 is embedded in the guide groove. The guide block 7 can limit the moving direction of the side slider 5 so that it moves in a direction perpendicular to the tangent of the side wall of the disc product 3.

[0033] As Figure 4 shown, lower template fastening bolts 10 are provided on the lower template 8, and the lower template fastening bolts 10 pass through the bolt holes of the lower template 8 and are connected to the guide block 7.

[0034] A circular groove is provided inside the lower template 8, and a top ring 6 is provided in the circular groove. The core mold 4 is arranged inside the top ring 6. The top ring 6 is used for forming the edge of the disc product 3.

[0035] As Figure 5 shown, core mold fastening bolts 11 are provided on the lower template 8, and the core mold fastening bolts 11 pass through the bolt holes of the lower template 8 and are connected to the core mold 4.

[0036] The working principle of this embodiment is:

[0037] When the disk compression mold provided in this embodiment is used, the mold is first assembled. The guide block 7 is assembled in the guide groove through the lower template fastening bolt 10. Then, the ejector ring 6 is placed in the circular groove of the lower template 8. Next, the core mold 4 is fixed on the lower template 8 through the core mold fastening bolt 11. Lay the prepreg sheets. The single-layer prepreg sheets cut in advance according to the required shape are laid on the core mold 4 layer by layer and stacked to the preset thickness. Then, bagging is carried out to pre-compact the prepreg sheets. Place the side sliders 5 around the lower template 8 and push the side sliders 5 inward along the guide block 7 so that the side sliders 5 are attached to the prepreg sheets. Finally, the wedge block 2 is assembled to the upper template 1 through the upper template fastening bolt 9. The upper template 1 and the wedge block 2 are buckled on the core mold 4 and the side sliders 5 as a whole. Prepare for compression molding. The assembled mold is placed in a press for pressurization and heating so that the prepreg sheets are cured into a disk product 3.

[0038] Those of ordinary skill in the art will realize that the embodiments here are to help the reader understand the principles of the present invention and should be understood that the protection scope of the present invention is not limited to such specific statements and embodiments. Those of ordinary skill in the art can make various other specific deformations and combinations without departing from the essence of the present invention according to the technical revelations disclosed in the present invention, and these deformations and combinations are still within the protection scope of the present invention.

Claims

1. A disk molding die, characterized in that: It includes an upper template (1), a lower template (8), a core mold (4) and side sliders (5); four side sliders (5) are arranged on the top of the lower template (8), and a molding cavity is formed among the four side sliders (5), and the core mold (4) is arranged in the molding cavity; the upper template (1) is fixed on the tops of the four side sliders (5).

2. The disk compression mold according to claim 1, wherein: A wedge-shaped groove is formed on the top of the side slider (5), and a wedge-shaped block (2) is embedded in the wedge-shaped groove; bolt holes are formed on the upper template (1), and upper template fastening bolts (9) are assembled in the bolt holes, and the upper template fastening bolts (9) penetrate through the bolt holes of the upper template (1) and are connected with the wedge-shaped block (2).

3. The disk compression mold according to claim 2, characterized in that: The wedge-shaped groove is a variable-diameter groove body, and the cross-sectional area of the variable-diameter groove body decreases along the direction in which the wedge-shaped block (2) is embedded; The four wedge-shaped blocks (2) are embedded in the four wedge-shaped grooves, and the four wedge-shaped blocks (2) are pushed to converge towards the middle.

4. The disk compression mold according to claim 1, wherein: Strip-shaped grooves are formed on the bottoms of the side sliders (5) and the tops of the lower template (8), and the cavities of the two strip-shaped grooves form a guiding groove; a guiding block (7) is embedded in the guiding groove.

5. The disk compression mold according to claim 4, characterized in that: A lower template fastening bolt (10) is arranged on the lower template (8), and the lower template fastening bolt (10) penetrates through the bolt hole of the lower template (8) and is connected with the guiding block (7).

6. The disk compression mold according to claim 1, characterized in that: A circular groove is arranged inside the lower template (8), and a top ring (6) is arranged in the circular groove; the core mold (4) is arranged in the top ring (6).

7. The disk compression mold according to any one of claims 1 to 6, characterized in that: A core mold fastening bolt (11) is arranged on the lower template (8), and the core mold fastening bolt (11) penetrates through the bolt hole of the lower template (8) and is connected with the core mold (4).

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