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公开(公告)号：US4035224A
公开(公告)日：1977-07-12
申请号：US674985
申请日：1976-04-08
CPC分类号： B29C63/04 , B29L2009/00 , B29L2031/441 , Y10T156/1034
摘要： A method and an apparatus for forming a top assembly for desks, tables, credenzas and similar items having a core and an outer layer of a thin hard laminated plastic sheet adhered to the core. The thin hard laminated plastic sheet covers the top surface of the core and is wrapped around the side and end walls and undersurface edges thereof. The laminated plastic sheet is unbroken by seams or rims along the side and end edges of the top assembly. In forming the top assembly, a one-piece thin hard laminated plastic sheet is adhered by cement to the top surface of the core and is positioned so that side and end portions of the laminated plastic sheet extend beyond the side and end edges of the top surface. A selected extending side or end portion of the laminated plastic sheet is heated to soften it and make it pliable. The softened laminated plastic is bent downwardly and pressed into contact with the adjacent adhesive coated side or end wall of the core thereby adhering the laminated plastic sheet to that wall. The bending and pressing are continued thereby bending the laminated plastic sheet inwardly to adhere it to the edge of the undersurface of the core. This operation is repeated for each side or end of the top assembly. The apparatus used includes a hydraulic actuating clamping bar for holding the top assembly in place during bending operations and a hydraulic actuated bending or forming bar which bends the softened laminated plastic sheet downwardly and wraps it around and under the side and end walls of the top assembly core. During bending operations, the forming bar pivots about an axis which is moving in an arcuate path. The movement of the forming bar in the arcuate path is opposed by spring means.
摘要翻译： 一种用于形成用于书桌，桌子，书签和类似物品的顶部组件的方法和装置，其具有粘附到芯部的薄硬层压塑料片的芯和外层。 薄的硬层压塑料片覆盖芯的顶表面并围绕其侧壁和端壁及其下表面边缘缠绕。 层压塑料片沿着顶部组件的侧面和端部边缘的接缝或边缘不间断。 在形成顶部组件时，一块薄的硬质层压塑料片通过水泥粘附到芯的顶表面并且被定位成使得层压塑料片的侧面和端部延伸超过顶部的侧面和端部边缘 表面。 将所选择的层压塑料片的延伸侧或端部加热以使其软化并使其柔韧。 软化的层压塑料向下弯曲并压制成与芯的相邻粘合剂涂覆侧或端壁接触，从而将层压的塑料片粘附到该壁上。 继续弯曲和压制，从而将层压的塑料片向内弯曲以将其粘附到芯的下表面的边缘。 对顶部组件的每一侧或端部重复该操作。 所使用的装置包括用于在弯曲操作期间将顶部组件保持就位的液压致动夹紧杆，以及液压致动的弯曲或成形杆，其将软化的层压塑料片向下弯曲并将其包裹在顶部组件的侧壁和端壁周围 核心。 在弯曲操作期间，成形杆围绕在弓形路径上移动的轴线枢转。 成形条在弓形路径中的移动由弹簧装置相对。
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公开(公告)号：US4067167A
公开(公告)日：1978-01-10
申请号：US674984
申请日：1976-04-08
IPC分类号： A47B13/08
CPC分类号： A47B13/086
摘要： A top assembly for desks, tables, credenzas and similar items having a metal core and an outer covering of a thin hard laminated plastic. The thin hard laminated plastic covers the top surface of the metal core and is wrapped around the side and end walls and the undersurface edges thereof. The side and end walls of the metal core extend generally at right angles to the top surface thereof providing the top assembly with a squared planar appearance. The thin laminated plastic covering is unbroken by seams or metal rims along the side and end edges of the top assembly. The only portions of the laminated plastic covering that are slit or cut are at the corners of the top assembly and these portions are covered by metal caps.
摘要翻译： 用于书桌，桌子，商品和类似物品的顶部组件，其具有金属芯和薄的硬层压塑料的外覆盖物。 薄的硬层压塑料覆盖金属芯的顶表面，并围绕其侧壁和端壁及其下表面边缘包裹。 金属芯的侧壁和端壁通常与其顶表面成直角延伸，为顶部组件提供平坦的平面外观。 薄的层压塑料覆盖物沿着顶部组件的侧面和端部边缘的接缝或金属边缘不间断。 切割或切割的层压塑料覆盖物的唯一部分位于顶部组件的角部，并且这些部分被金属盖覆盖。
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