Foam-sandwich-structured light scanning mirror and manufacturing method thereof
The invention discloses a foam-sandwich-structured light scanning mirror and a manufacturing method thereof. The scanning mirror is of a sandwich structure composed of a front high-reflectivity mirror aluminum sheet, middle foamed plastic and a back structural aluminum plate, and the foam-sandwich-structured light scanning mirror is manufactured by adopting a mould to fix the high-reflectivity mirror aluminum sheet and the structural aluminum plate and processed by filling the foamed plastic therebetween for formation. Compared to a conventional scanning mirror integrally manufactured, the foam-sandwich-structured light scanning mirror is light in structural quality, small in loading moment, simple in structure and low in cost, and a new method for light weight of the scanning mirror and miniaturization of a scanning mechanism is provided. 1. A foam sandwich structure light scanning mirror, characterized in that includes: high-reflectivity mirror aluminum plate, chemical foaming plastic, aluminum structure; Chemical foaming plastic is positioned where a high reflectance specular aluminum plate and structure between the aluminum plate; high-reflectivity mirror aluminum plate is used as a scanning mirror reflectors side light functional mirror face with the optical system; the structure of the support member as the structure of the aluminum mirror the shape of the high-reflectivity consistent the aluminum plate. 2. Foam sandwich structure light scanning mirror according to Claim 1, characterized in that parallel to the aluminum plate mirror surface of high reflectance aluminum structure. 3. Foam sandwich structure light scanning mirror according to Claim 1, characterized in that the mirror surface of high reflectance of the aluminum main body portion is oval or circular. 4. Foam sandwich structure light scanning mirror according to Claim 1, characterized in that high-reflectivity mirror aluminum plate comprises two positioning edges, two positioning edges in the extending direction of the vertical to each other. 5. Foam sandwich structure light scanning mirror according to Claim 1, characterized in that high-reflectivity mirror aluminum plate and structure between the aluminum plate through the cooling after the bonding of the chemical foaming plastic combination. 6. Foam sandwich structure according to Claim 5 light scanning mirror, characterized in that chemical foaming plastic is polyurethane foam plastic. 7. A the foam sandwich structure manufacturing method of light scanning mirror according to Claim 1, characterized in that the front face using a die high reflectance mirror aluminum plate and a back side structure aluminum plate is fixed, then the fixed high-reflectivity mirror surface of the aluminum plate and the structure between the aluminum casting mold cavity proper amount of chemical foaming plastic, sealing after pouring sprue gate, to be chemical foaming plastic cooling latter drawing pattern foam sandwich structure by the scanning mirror. 8. Foam sandwich structure manufacturing method of light scanning mirror according to Claim 7, characterized in that for fixing the positive high-reflectivity mirror aluminum plate and the back of the die material of the aluminum sheet structure is made of aluminum alloy or stainless steel, the structure of the die in the upper die, the lower die, the upper die, the lower die to a die, the upper die, the bottom surface of the cavity of the lower module and scanning mirror positive high-reflectivity mirror aluminum plate and the back surface of the same shape of the aluminum sheet structure; proeminent top die minute surface of the positioning mechanism of the sub-surface of the lower die of the upper die in order to ensure that the positioning mechanism, the positioning accuracy of the lower module cavity; an upper die, and lower die sub-profile matched with each other on the funnel-shaped gate, in order to facilitate the foaming plastic injection; an upper die, and lower die sub-profile matched with each other on a rectangular blind hole in order to facilitate scanning mirror model stripping after cooling. 9. Foam sandwich structure manufacturing method of light scanning mirror according to Claim 8, characterized in that the upper mold, the lower mold cavity and the front surface of mirror surface of high reflectance between the aluminum plate and the back side structure of the aluminum plate with the transition fit.