Friction stir welding vacuumizing mold

Abstract

The invention discloses a friction stir welding vacuumizing mold, which is characterized in that a vacuumizing air exhaust hole is formed in the rear side surface of the mold, a vacuumizing air exhaust groove and an air exhaust hole are formed in the structure and are communicated with the interior of a mold cavity, a welding cover plate is arranged on the bottom surface of the mold, and a vacuumizing runner is formed after the welding cover plate is welded and closed. And the air wrapping phenomenon during vulcanization forming of a product is reduced, and the product quality is improved.

Description

Technical Field

[0001] The invention discloses a stir friction welding vacuum mold, which is vacuumed during heating and vulcanization. Background Art

[0002] .A vacuum mold is a mold required for production when the material is heated for vulcanization. It is a mold that can extract air from the mold during heating and vulcanization production, so that there is no wind trapping during vulcanization molding of the product, and the molding conditions required by the production process are met. The molds currently on the market cannot achieve the closed vacuum effect of evenly extracting air from distributed pores in terms of vacuum technology, which results in unstable product molding effects during production. This vacuum mold can improve the stability of product molding. Summary of the invention

[0003] The invention discloses a friction stir welding vacuum mold to solve the above problems.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: The invention discloses a stir friction welding vacuum mold, an upper mold A, a lower mold B, a lower mold sealing bottom plate C, a lower mold vacuum external connection hole D, a lower mold vacuum air groove connected to the mold internal air hole E, a lower mold vacuum air groove F, a lower mold sealing plate welding position G, a sealing plate V-shaped telescopic groove H, a mold mounting hole I, a lower mold sealing bottom plate C and a lower mold B are assembled, and stir friction welding is performed at the lower mold sealing plate welding position G. After the full sealing welding is completed, in the structure of the lower mold B, there is a vacuum hole flow channel through the lower mold vacuum air hole E, the lower mold vacuum air groove F is connected to the lower mold vacuum external connection hole D, and a vacuum hole flow channel is formed, thereby forming a vacuum mold.

[0005] As the preferred technical scheme of the present invention, a friction stir welding vacuum mold has connected mold internal pores and air grooves in the lower mold, which are connected to the external vacuum pores. After the bottom plate is sealed and welded to the lower mold by friction stir welding, a fully enclosed vacuum effect mold is formed.

[0006] As a preferred technical solution of the present invention, a friction stir welding vacuum mold is sealed and welded by friction stir welding, which does not generate high temperature and the mold does not deform.

[0007] .As the preferred technical solution of the present invention, a stir friction welding vacuum mold has a V-shaped cross expansion groove at the sealing bottom plate. After the assembly and welding of the lower mold and the lower mold sealing bottom plate are completed, there is still a little high temperature, which will cause insufficient tightness and affect the heating and cooling conduction effect. With this V-shaped expansion groove, the mold can be pressurized up and down by the cylinder force when it is used in production on the machine, with an allowable deformation amount, achieving a tighter fit and a better conduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the decomposition structure of the present invention; Figure 2 This is a schematic diagram of the exploded structure of the lower side of the mold of the present invention; Figure 3 It is a schematic diagram of the exploded structure of the upper side of the mold of the present invention; In the figure, A is the upper mold, B is the lower mold, C is the sealing bottom plate of the lower mold, D is the vacuum connection hole of the lower mold, E is the vacuum air groove of the lower mold connected to the air holes in the mold, F is the vacuum air groove of the lower mold, G is the welding position of the lower mold sealing plate, H is the V-shaped expansion groove of the sealing plate, and I is the mold mounting hole. Implementation

[0009] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0010] See also Figure 1-3 The present invention discloses a technical solution: a friction stir welding vacuum mold, A friction stir welding vacuum mold, characterized in that an upper mold A, a lower mold B, a lower mold sealing bottom plate C, a lower mold vacuum external connection hole D, a lower mold vacuum air groove connected to an air hole E in the mold, a lower mold vacuum air groove F, a lower mold sealing plate welding position G, a sealing plate V-shaped expansion groove H, a mold mounting hole I, a lower mold sealing bottom plate C and a lower mold B are assembled, and after the lower mold sealing plate welding position G is subjected to friction stir welding, and the full sealing welding is completed, in the shoe inner molding structure of the lower mold B, there is a lower mold vacuum air groove connected to the air hole E in the mold, and is connected to the lower vacuum air groove F on the back of the mold, and the lower vacuum air groove F is connected to the lower mold vacuum external connection hole D to form an internal air hole flow channel, thereby forming a vacuum mold.

[0011] Working principle of the present invention: 1. This kind of friction stir welding vacuum mold has a vacuum hole on the side of the lower mold after the lower mold bottom plate and the sealing plate are welded. The vacuum gas groove and the vacuum gas groove are connected to the air holes in the mold, so that the inside of the mold can be vacuumed during vulcanization production.

[0012] The present invention has the following advantages: the friction stir welding vacuum mold of the present invention does not generate high temperature because it is welded by friction stir welding, thus solving the problem of thermal deformation of the mold during welding and sealing. Although the sealing plate will have some thermal deformation, which will lead to insufficient tightness between the lower mold and the sealing plate, the V-shaped expansion groove of the sealing plate is designed to allow the mold to be pressurized up and down due to the cylinder force during production, allowing some deformation to be easily pressed to achieve a tighter fit, thereby achieving the best heat transfer and cooling effects. This design can solve the problem of closed production and inability to exhaust air during general mold vulcanization production, thereby achieving the best vacuum production effect.

[0013] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A friction stir welding vacuum mold, It is characterized in that Upper mold A, lower mold B, lower mold sealing bottom plate C, lower mold vacuum external connection hole D, lower mold vacuum air groove connected to mold internal air hole E, lower mold vacuum air groove F, lower mold sealing plate welding position G, sealing plate V-shaped expansion groove H, mold mounting hole I, lower mold sealing bottom plate C, lower mold sealing plate welding position G, lower mold vacuum air hole E, lower mold vacuum air groove F, lower mold vacuum external connection hole D.

2. According to the invention of claim 1, a friction stir welding vacuum mold is characterized in that: The lower mold B and the lower mold sealing bottom plate C are assembled and welded at the welding position G of the lower mold sealing plate by stir friction welding. In the lower mold B, the inner surface of the molding cavity has a lower mold vacuum groove connected to the mold air hole E, connected to the lower mold vacuum groove F, and the lower mold vacuum external connection hole D.

3. According to claim 2, a friction stir welding vacuum mold of the present invention is characterized in that: The lower mold B and the lower mold sealing bottom plate C are stir-friction welded at the welding position G of the lower mold sealing plate.

4. According to claim 4, a friction stir welding vacuum mold of the present invention is characterized in that: Sealing plate V-shaped expansion groove H.

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