MOLD STRUCTURE FOR PRESSING AND CUTTING PAPERBOARD |
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申请号 | US14485561 | 申请日 | 2014-09-12 | 公开(公告)号 | US20160075099A1 | 公开(公告)日 | 2016-03-17 |
申请人 | Shang-Ruei Wang; | 发明人 | Shang-Ruei Wang; | ||||
摘要 | The mold structure includes an upper mold, a pressing mold and a bottom mold. The upper mold has downward pressers and knives. The knives are interlaced with the pressers. Each of the knives is higher than adjacent one of the pressers. The pressing mold is flexibly connected under the upper mold and has through holes for being passed through by the pressers and knives. The bottom mold is arranged under the pressing mold and the upper mold for supporting a sheet of paperboard to be pressed and cut. | ||||||
权利要求 | What is claimed is: |
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说明书全文 | 1. Technical Field The invention relates to knife mold, particularly to a mold structure for pressing and cutting honeycombed paperboard. 2. Related Art Commercial products must be packaged. Electronic products must be packaged with vibration reduction mechanism to prevent from damage in transportation. Expandable polystyrene (EPS) is a common packaging material for vibration reduction. However, EPS is very hard to be discomposed under natural conditions and tends to cause pollution. To avoid environmental pollution, paperboard, such as corrugated paper or honeycombed paperboard, is used as vibration reduction packaging material. Honeycombed paper possesses advantages of light weight, high strength and high rigidity and is a great packaging material with buffering, thermal isolation and sound isolation. Honeycombed paperboard must be processed to fit shapes of products. Such a shaping process requires multiple treatments including pressing, adhesion and cutting. The conventional shaping process for honeycombed paperboard is uneconomical and the paperboard which is adhered by this process must reduce its structural strength. Furthermore, the honeycombed structure in the paperboard will be destroyed by repeatedly cutting. And the knife is easy to be jammed. An object of the invention is to provide a mold structure for pressing and cutting honeycombed paperboard, which can simultaneously press and cut honeycombed paperboard for shaping. To accomplish the above object, the mold structure of the invention includes an upper mold, a pressing mold and a bottom mold. The upper mold has downward pressers and knives. The knives are interlaced with the pressers. Each of the knives is higher than adjacent one of the pressers. The pressing mold is flexibly connected under the upper mold and has through holes for being passed through by the pressers and knives. The bottom mold is arranged under the pressing mold and the upper mold for supporting a sheet of paperboard to be pressed and cut. Please refer to Multiple springs 10 are disposed between the upper mold 1 and the pressing mold 2 so that the upper mold 1 can flexibly move with respect to the pressing mold 2. Each spring 10 is axially passed by a rod 11. An outer end of the rod 10 is fastened to the pressing mold 2 and the other end thereof is fastened to the upper mold 1. The rods 11 make the upper mold 1 move stably. The upper mold 1 is provided with pressers 12 and knives 5 toward the pressing mold 2. As shown in The pressing mold 2 is formed with through holes 20 for being passed through by the pressers and knives 5 so as to press and cut the honeycombed paperboard 4. The bottom mold 3 is formed with slots 30 for receiving the knives 5. Please refer to Please refer to The zigzag edge 53 makes the knife 5 easy to pierce the honeycombed paperboard 4. When the knife 5 further pierces the paper core 40, the slant cutting edge 51 and the spine 52 will not be jammed by the paper core 40 because the tip 530 exceeds the valley 531. Thus the paper core 40 will be formed in a good shape. |