Title

記憶卡射出成型模內沖切力學之有限元素分析

Translated Titles

Finite Element Analysis of In-mold Cutting Mechanics in Memory Card during Injection Process

Authors

徐銘燦

Key Words

有限元數分析 ; 模內沖切 ; 塑膠模具 ; 側面澆口 ; Finite Element Analysis ; Remove runner device ; Plastic mold ; Side gate

PublicationName

臺北科技大學製造科技研究所學位論文

Volume or Term/Year and Month of Publication

2014年

Academic Degree Category

碩士

Advisor

陳政順

Content Language

繁體中文

Chinese Abstract

本研究是利用有限元素分析軟體搭配快速去除料頭的模具結構,探討切刀與高分子材料沖切剪斷的力學變化,在個案中作法是將切刀分成九種角度,在不考慮溫度與摩擦力情況下模擬沖切剪斷側面澆口,模擬結果顯示等效應力會因為切刀角度不同伴隨著截面積變化而有所改變,另外透過模擬分析得到去除料頭所需的剪切力與文獻推論所計算出的數據相互驗證,誤差甚小;澆口寬度增加對於剪切力是有影響的 ,雖然有助於射出成型但是需要更大的剪切力才能沖切剪斷,對於塑膠模具結構設計初期是重要的參考依據。 最後透過田口式品質設計方法得知,在沖切剪斷時澆口寬度對於切刀所承受的等效應力影響最大,切刀材料與切刀角度影響次之,澆口長度對於切刀所承受的等效應力的影響甚微;在模具設計初期,即有量化數據資料,供設計人員研發模具機構之參考,省卻大量實做實驗的時間與金錢成本,也避免了過度設計,所造成的成本增加,進一步對於自動化生產製造更是有效率的提升產能,將此模擬分析原則納入設計規範之中,更是有助於結構設計的可靠度提升。

English Abstract

This investigation use of ANSYS software which based on tooling mechanic has rapidly remove runner device. For the experiment projects, author will analysis nine different angles gate cutting knifes. In the stimulate status that without consideration of temperature and friction, the author cutting the plastic part side gate for this experiment. The result shows von Mises stress will change by different angles cutting knifes and cross sectional areas. Through stimulate analysis, the result shows the shear force of gate cutting which match to corollary reference computed result. Increase wideness of gate that will affect shear force. However, it is good for plastic molding. By Taguchi method for quality design, wideness of gates this factor have obvious influence to die-cutting von Mises stress. However, the material of cutting knife and cutting knife angle have less influence to die-cut von Mises stress. Length of gates almost no influence to die-cut von Mises stress. In the early mechanical design period, this study can provide quantity data to engineers for tooling design reference. It not only can save lots of time and money waste, but also can reduce the cost and prevent over design.Moreover, it can help for automatically mass produce and effectual improve capacity. This study can increase reliability of mechanical design, if this stimulate analysis principle can bring into tooling design guild line.

Topic Category 機電學院 > 製造科技研究所
工程學 > 機械工程
Reference
  1. [1]Hidetsune Hojo, Hirosuke Masumori, Yodo Kageyama and Toshisada
    連結:
  2. Takahashi, “Shearing of Thermoplastic Polymer Sheets at Room
    連結:
  3. Temperature”,Journal of the Japan Society for Technology of
    連結:
  4. Thermoplastic Polymer Sheets,”Journal of the Japan Society for
    連結:
  5. Society for Technology of Plasticity, vol. 11, No.115, pp.617-624,
    連結:
  6. Speed Blanking of Thermoplastic Polymer Sheets,”Journal of the
    連結:
  7. Japan Society for Technology of Plasticity, vol.17, No.183, pp.316-
    連結:
  8. [8]張肇文,汽車燈殼射出成形澆口切斷機構之製作研究,國立虎尾科技大學機
    連結:
  9. [17]姜文忠,承受軸向壓縮負載薄壁管之模擬分析,國立台北科技大學製造科
    連結:
  10. [18]陳政順、胡惠國、歐仁信,D6AC超高強度低合金鋼旋壓成型性之模擬分析
    連結:
  11. [24]Jung-Chung Hung and Chinghua Hung, “The design and development of
    連結:
  12. Surfaces//6.2 Contact Options
    連結:
  13. Plasticity, vol.9, No.88, pp.304-314, 1968-5
  14. [2]Hirosuke Masumori, Hidetsune Hojo and Yodo Kageyama,“Effect of
  15. Shearing Speed and Temperature on Shearing Characteristics of
  16. Technology of Plasticity, vol. 10, No.98, pp.180-189, 1968-3
  17. [3]Teizo Maeda, Shunei, MEKARU and Akitake Makinouchi,“Fine Cutting
  18. of Plastic Sheet with Knife-Edged Tool,”Journal of the Japan
  19. 1970-8.
  20. [4]Teizo Maeda and Toshiro Higuchi, “An Experimental Study of High
  21. 321, 1976-4.
  22. [5]戴宜傑,熱可塑性塑膠剪斷加工,機械月刊91 民72.02 pp.175-180
  23. [6]簡木發,剪切過程之有限元素法分析,國立中央大學機械工程研究所,碩士
  24. 論文,1992
  25. [7]何明雄,PC/ABS合膠材料機械性質之研究,國立中央大學機械工程研究所,
  26. 博士論文,2000
  27. 械與機電工程研究所,2007
  28. [9]徐啟峰,熱塑性塑膠射出成型模內沖孔製程開發研究,國立交通大學機械工
  29. 程學系,碩士論文,2007
  30. [10]張文玉、向厚淼,注射模側澆口自動切斷結構探討,中國模具製造期刊,第
  31. 4期,pp.46-48,2007
  32. [11]蘇寶堂,具快速去除料頭之模具結構,中華民國新型專利,M332017,2008
  33. [12]李建平,剪斷加工中刮光工程對剪斷切口面之影響,逢甲大學材料與製造工
  34. 程碩士在職班,機械工程組,碩士論文,2009
  35. [13]張智豪,應用田口方法改善玻璃纖維強化塑膠沖切後表面崩裂現象,逢甲大
  36. 學材料與製造工程碩士在職班,機械工程組,碩士論文,2011
  37. [14]陳思婷,模內切口之模具設計與固化層模擬分析之研究,全國精密製造研
  38. 討會論文集,pp.383-388,2012
  39. [15]黃忠良,精密剪斷加工,復漢出版社,1996
  40. [16]側澆口澆注系統凝料自動切斷的幾種方法探討,
  41. http://big5.51base.com/machine/mould/plastic/20081107107900.shtml
  42. 技研究所,碩士論文,2013
  43. ,精密機械與製造科技研討會論文集,D024-2,2011
  44. [19]陳英哲,模具內的剪切操作對於PC/ABS聚摻物射出成形品抗拉強度的影響
  45. 研究,國立交通大學工學院精密與自動化工程學程,碩士論文,2006
  46. [20]李輝煌,田口方法:品質設計的原理與實務,高立圖書有限公司出版,2011
  47. [21]https://www.sdcard.org/cht/developers/overview/capacity/#formfactor
  48. [22]http://www.matweb.com/search/DataSheet.aspx?MatGUID=8791da5ae9094ec18
  49. ede9e02775a2f74
  50. [23]http://www.steelgr.com/steel-grades/tool-steel/jis-skd61.html
  51. a hydrostatic extrusion apparatus”, Journal of Materials Processing
  52. Technology 104 (2000) pp.226-235
  53. [25]http://www.matweb.com/search/DataSheet.aspx?MatGUID=8bc5d558f4174
  54. e6082ddf4966e382bd6&ckck=1
  55. [26]張建利,鋁合金基材結合塑膠疊層構之製程與機械性質分析,國立台北科
  56. 技大學製造科技研究所,碩士論文,2014
  57. [27]ANSYS 14.5 Help:ANSYS LS-DYNA User's Guide//6.Contact
  58. [28]http://www.matweb.com/search/DataSheet.aspx?MatGUID=27498e72901c45159
  59. f7507203d4120d0&ckck=1
  60. [29]http://www.matweb.com/search/DataSheet.aspx?MatGUID=d1dbcd9b46a44
  61. 137a7aa008fdfca9f54