- 學位論文
冰箱隔熱材之自動化填充治具設計
Automatic Filling Fixture Design for Insulating Materials of Refrigerators
若您是本文的作者，可授權文章由華藝線上圖書館中協助推廣。
摘要
冰箱所以能維持溫度，達冷藏、保溫之效，在於中空門璧內灌入發泡隔熱材。而加工過程中，隔熱材發泡膨脹，常會因壓力過大導致門璧變形、毀損，故需外加治具，將強大的推擠力施以適當且平整頂壓，以防止門壁破損、變形。本研究針對一特定加工廠，首先就其目前所使用之治具進行缺失分析。現行夾治具是由數板片接合固定而成，四周並無活動調節之機構，如此設計導致發泡材易漏、定位不易及加工後工件取出不易等重大缺憾。針對以上問題，三項全新設計之夾治具將一一呈現，並進行討論、分析。 首先針對發泡材易漏之缺失，特別設計一封壓側板，裝置於模穴周圍，完成發泡組件適當且閉合的緊密空間。且設有補償裝置，供以修正發泡組件之公差裕度，如此更切確改善漏料之虞。 此外以提升加工效率、改善上下模定位誤差為出發點，進行構思，創作出冰箱本體及門體隔熱材填充治具。其中斜導面及定位孔的雙重保障，完成了上下模精準定位，消除溢料問題；頂舉裝置，則解決過重的加工件取出不易之問題，輕鬆縮短加工時程。並針對不同型號冰箱，製作相對之上下模組，加工時配合貨批進行，更換於自動台車上，增加其機動性及效率。而如此隔熱材完全填充式之冰箱，更能加強其隔熱效果。 完成設計後，與現階段所使用之舊型機台相比較發現：加工時間由原有10 mins減少至6~7 mins；產能則由730片/8小時、340台/8小時，增為800片/8小時、400台/8小時。而如此結果圓滿達成最初目標：高效率、高產能之自動化機台設計，且業已申請專利通過，正式於生產線上服務。
並列摘要
Refrigerators have foaming insulating materials in the hollow walls to maintain constant temperature and achieve the functions of cooling and keeping warm. During the processing, the insulating materials would expand and exert more forces, and result in deformation and damage to the door. Therefore, additional fixtures were required to exert strong force to keep the door leveled and free from damage. This study analyzed the flaws of the currently used fixtures in a processing factory. The fixtures were made with several plates without movable joints. Such design would cause leakage of the foaming materials, difficulty in positioning and removal. Therefore, this study presented three new designs of fixture, and provided discussions and analysis. First, a pressure sideboard was installed around the die to form suitable and sealed space for the foaming materials. Compensation device was installed to adjust the tolerance and improve the leakage problem. To improve the efficiency and the error in the position of the upper and lower die, filling fixture for the refrigerator door and insulating material was designed. The oblique surface and positioning hole could ensure the positioning of the upper and lower die, and solve the problem of overflow. The jack device could solve the problem of difficulty in removing the materials, and reduce the work time. Customized upper and lower dies were made for different models of refrigerators, and changed on the machine to improve the mobility and efficiency. The design could also improve the insulating effect. Compared the new design with the existing machine, it was found that the work time reduced from10 min to 6~7 min; the output increased from 730pc/8hr, 340unit/8hr, to 800pc/8hr, 400unit/8hr. The results proved the high efficiency and high productivity of the new design. The design has been patented and ready for service.
參考文獻
2. 宋文發、陶惟翰, 硬質PU 發泡隔熱材料之熱傳研究, 中國冷凍空調雜誌,p90~96 85 年。
3. 宋文發、陶惟翰、曲新生, PU 真空保溫片之隔熱性能研究, 中國冷凍空調雜誌,p132~142,85 年。
12. 行政院, 環境保護署, 環保標章產品項目及其需之規格標準,85 年。
4. 李吉祥、關家倫、陳誼彰、楊炎勝、羅彗瑋, 環保冰箱隔熱材料之研發與輔導, 中國冷凍空調雜誌,p98~105,85 年。
7. 孫即愚, 電冰箱省能對策分析, 中國冷凍空調雜誌, 第七卷第三期p28~39,88 年。