Process method for producing sharp-edge integrated lampshade and lampshade made by using same

Abstract

The invention discloses a process method for producing a sharp-edge integrated lampshade and a lampshade made by using the same. The method comprises the following steps that rough shape cutting is conducted, wherein a plastic plate is milled or stamped into a blank material, a diffusion agent is added into the blank material, and the machined plastic plate can serve as a diffusion plate for a light diffusion effect; square notches are formed in the four corners of the blank material, and four side edges are formed in the portions, between the adjacent notches, of the blank part; bending is conducted, wherein the side edges are sequentially bent to form a box-shaped semi-finished lampshade; after the side edges are bent, a side butting structure is formed between the adjacent side edges ofthe box-shaped semi-finished lampshade, and gaps exist at the positions where the adjacent side edges are butted; seam sealing is conducted, wherein edge strips stick to the inner surfaces of the adjacent side edges of the box-shaped semi-finished product lampshade, or the adjacent side edges are welded with a plastic welding rod, the gaps are sealed, and the two sides of the edge strips are attached to the adjacent side edges; and rounded corner repairing and polishing are conducted. According to the lampshade with the structure and the process, it can be guaranteed that the lampshade realizes the sharp-edge effect, the lampshade is clean and tidy in whole, stable in size and uniform and consistent in light transmission, does not loosen and crack for a long time, does not crack, and meets the requirements of mass stability and consistency of mass production products.

Description

technical field [0001] The invention relates to the technical field of lighting fixtures, in particular to an integrated lampshade production process. Background technique [0002] With the improvement of the level of economic development, people's various needs for life are also gradually increasing, becoming complex and diverse, affordable, and the panel lights with simple appearance are widely used. In the product category of panel lights, most of them are framed, and frameless is one of the development trends of panel lights. This is mainly because frameless panel lights can be used as a single lamp like framed panel lights. It can also be freely spliced ​​into a light wall or light curtain with uniform light output and no dark areas; in the field of frameless panel lights, especially sharp-edged square or special-shaped frameless panel lights, the application fields are the most extensive and the most promising. [0003] As a replacement product of panel lights, how to...

AI Technical Summary

Problems solved by technology

[0005] like figure 1 and figure 2 As shown, the first one is to use thick PMMA boards and produce them through mechanical groove processing. Although the sharp edge design features are realized, the cost is high, and the optical shadow caused by the groove itself cannot be eliminated, that is, the light output cannot be guaranteed. The surface is uniform, and it is impossible to meet the application requirements of light wall or light curtain splicing without dark areas, and this problem cannot be solved

[0006] like image 3 As shown, the second type uses UV glue to bond the PMMA plate and the four side PMMA side strips to form a square lampshade. Although it also achieves the sharp edge effect and avoids the optical shadow caused by the gong groove, the lampshade needs to be split into two parts. Multiple parts (a flat plate and 4 side strips were split), each part is fixed to each other by UV glue bonding, the total bonding length is very long; and the current bonding process basically relies on manual processing, It generally takes 24 hours for the glue to fully cure, and various problems such as foaming, whitening, and degumming are prone to occur, and the product quality is difficult to maintain stability

And because there are many parts, the bonding process has high requirements on the processing surface and precision of the parts, and the processing cost of the parts is high; the PMMA board also has the situation of dimensional changes caused by moisture absorption and heat absorption. After the UV glue is cured, it is a brittle material, and there are lampshades with a pure bonding structure. Long-term application of each part is prone to the risk of loosening due to glue aging or mechanical fatigue

[0007] The third is the production of PMMA or PS lampshades by precision injection molding; lampshades using this process can realize small-sized sharp-edged integrated lampshades; the length and width of the product are basically no more than 300*300MM, and the lampshade has a simple appearance and uniform light transmission; However, if it is necessary to produce a sharp-edged integrated lampshade with a larger size injection molding process, there will be a great technical risk and a greater cost

However, this process cannot produce sharp-edged square or polygonal or other special-shaped one-piece lampshades. This is mainly blow molding or plastic-absorbing process, which is to soften the plastic sheet by heating, and then produce it by mold shaping. All the shape parts of the lampshade must be round. Excessive, otherwise there will be problems of cracking or wrinkling

This also directly determines that the blister or blow molding process cannot produce lampshades that can meet the requirements of splicing light walls or light curtains.

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