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Design development process and injection molding mold
Mold is a basic industry of the national economy, is an important foundation for technology and equipment manufacturing industry, with the continuous social society, the economy continues to develop a variety of goods are constantly produced, which produce most of the goods are dependent on diversification of the mold. Machinery, electronics, automotive, petrochemical, construction of the development of the five pillar industries of the national economy also requires the development of mold industry with suitable. Important role in the manufacturing sector has mold, making the mold manufacturing capacity and technical level has become an important indicator to measure the level of national manufacturing and innovation ability. In recent years, with the improvement of mold manufacturing capacity, making the mold with high precision, long life, high productivity, cavity shape and mold complex structure.
Mould technology is a very complex subject, one subject in recent years of rapid development. The pieces of paper in a ring of plastic injection mold, for example, strive to reflect the learning of new knowledge and practicality, combined with the development of mold technology in recent years, reflecting the emphasis on advanced technology. In the mold design, detailing the structure of the mold composition, structural features, working principle, design elements, used in the production of molding equipment, mold material and heat treatment requirements, and the deputy dies molding process. Since the production of plastic molding, injection molding most widely used, but the most complex structure of the mold.
The pieces of paper in a ring of plastic injection mold, for example, the basic structure of the injection molding and injection machines, and gating system design choices parting surface, forming component design, structural component design, the introduction of mechanism design, side parting and Pulling mechanism design and temperature control systems were highlighted. The design uses Auto / CAD software for the major parts and assembly drawings to draw, although the structure of the mold has some rational sensibility and understanding, also had the time and appropriate curriculum design, but due to lack of experience in the graduation the design process encountered many difficulties, but through the guidance of the teacher patience and detailed access to information, as well as students discuss and solve a lot of problems. I believe this design can meet the design requirements, to complete the actual task.
Quality and productivity level of relations with the plastic mold plastic products, technology is very close. Structure of the mold, precision cavity, surface roughness, sub-surface location, stripping the way a great impact on the dimensional accuracy of plastic parts, shape and position accuracy, visual quality. Temperature control of the mold, filling speed, gate location, the size of the exhaust ducts within the molecular orientation of plastic parts, such as crystal morphology and mechanical properties of condensed matter structures determined by their residual stress level, optical, and electrical properties of bubbles, depression and other product defects and important relationship.
Mold release mechanism and pulling mechanism drive mode, the action all models, velocity, cooling forming an efficient and decisive impact on speed. From the manufacturing point of view of the mold, mold parts require durable, it's a good process performance, reasonable selection, easy to manufacture and low cost. Because mold manufacturing costs are very expensive, it costs a great impact on the price of the product.
In summary it can be seen: the requirement for a pair of mold are many, in a variety of manufacturing industries, people on all aspects of these in-depth and comprehensive research, production and the level of the mold to make very rapid, high efficiency automation, large, sophisticated, long-life mold growing proportion of total production in the mold. From mold design and manufacture both in terms of the development trend of the mold can be summarized as the following aspects:
(1) high-speed, efficient automation mold plastic mold basically can now automatically prolapse products, automatic prolapse gating system, automatic fall, large product or products are not automatically fall robot manipulator or remove products, on another side of the draw core or multi-threaded products Pulling or automatically using a threaded screw core structure of the automatic side.
(2) high-precision injection molds can output high-precision plastic parts depends mold, machinery, raw materials, technology, the environment of the five factors, only when high precision molding machinery, process stability, the environment remains unchanged, small fluctuations in raw material shrinkage , especially when high precision molds can produce high-precision plastic parts.
(3) With the growing large plastic mold plastics applications in construction, machinery, automobiles, equipment, instruments, household appliances with a number of large plastic products, such as washing machine drum, large crates, and even automobile body, This requires a corresponding large molds, especially injection mold. Large injection mold logistics processes long, elastic deformation, self-important, and therefore its design, installation and use have special.
(4) computer technology and the perfect combination of mold tooling technology computer-aided design (CAD), aided engineering (CAE) is a 1970s developed rapidly in the 1980s, has entered the practical, allowing designers to improve the quality, design a lot faster times.
(5) The design of the new mold plastic mold manufacturing technology progress than the cavity of the most difficult, especially complex shaped cavity machining. To shorten the molding cycle, improve the precision molds, reducing the amount of manual fitter, etc., using a variety of coordinate machine, copying machine, light control machine tools and CNC machine tools. The other is the recent development of computer-aided manufacturing mold manufacturing technology has made a breakthrough, which uses a computer program to control digital machine tool and workpiece trajectory and processing procedures to complete the processing of the mold cavity.
(6) Research simple molding process in a timely manner in order to update the varieties of products, reduce costs and adapt to the requirements of small batch production, conducted research simple molding processes. Although the accuracy of these die poor, life is not long, but very short molding cycle, low cost, a certain scope.
(7) In recent years, the standardization of mold mold standardization work has been much progress, basically installed for all major types of mold standard parts. There are standard plastic parts in plastic molds, plastic injection molding parts technical conditions, standard plastic injection mold mold, plastic injection mold technology conditions, which include parts of the standard templates, pads, push rod, guide posts, more than ten kinds of parts .
(8) the development of special plastic mold, such as forming gas continuous development of new technology and the emergence of assisted injection mold, injection mold products bow bubble, reaction injection molding mold, multi-multi-cavity injection molds, injection molds and multicolor low foam extrusion head, multi-layer composite nose and so on.
Besides using the mold manufacture special molds for steel, using a special surface treatment technologies such as ion implantation, physical vapor deposition, sputtering, plating, etc. to improve the life of mold. Surface pattern processing of new technology can improve the appearance of quality plastic parts.
The molded piece shape is relatively simple, is an annular cylindrical member, a side wall of the through hole of 8mm diameter, i.e., to be set and the mandrel pulling mechanism, small size, uniform thickness. Sidewall wall thickness 4mm, an intermediate cylindrical wall thickness of 3mm. In addition, the plastic parts of the raw material is ABS, which is a yellowish, odorless, non-toxic polyethylene plastic look like, but lighter and more transparent than polyethylene. Anti density of 1.02 ~ 1.05g / cm3. It does not absorb water, shiny and easy coloring. Yield strength, tensile strength, compressive strength and hardness and elasticity is better than polyethylene. After oriented polypropylene hinges can be made with special high resistance to flexural fatigue strength oblique. ABS melting point of 164 ~ 170 ℃, heat resistance, and can be sterilized at temperatures above 100 ℃. Good high-frequency insulation performance, because they do not absorb water, insulation performance is not affected by temperature, but under the influence of oxygen, heat, light, easily depolymerization, aging, so will shun join anti-aging agent. Mold shrinkage range, prone to shrinkage, dents and deformation, heat capacity, injection mold must be designed to be able to move sufficiently cold loop, forming a suitable mold temperature is about 80 ℃, not lower than 50 ℃, otherwise it will cause molding plastic surface gloss differential or produce seams and other defects. Overheating will warp phenomenon. Plastic good liquidity, should be adopted in the process temperature and high pressure injection method, reduce stress, improve transparency. In mold design and manufacture, to minimize the dawn injection system flow resistance, stripping slope should be appropriate agency force should be balanced smooth launch, the mold cavity surface roughness smaller, attention, exhaust, etc.
The upper side of the plastic member has a through-hole, the lower side of a concave-convex, so that it need to use the upper side of the core with the molding side core slider, with a lower side of the slider cavity side molding. Bevel column given by template forming mold base plate set. When mold, plastic bag on the punch with the left part of the movable mold moves together in the role of side angle pin core slider and side slider with the pusher plate cavity While back in the pusher plate guide chute were moving upward and the lower side, so the side core and cavity side gradually from plastic parts, until the angle pin respectively from the two sliders, side core pulling and typing until the end. To ramp when the mold guide column Bevel accurate insertion hole on the slider, and the slider from the slide out when the angle pin fixed pitch slider to set the limit device in compression Under the action of the spring, side core slider Pulling end while against the stoppers are positioned at the side of the cavity slider side parting end due to its own gravity located on the stopper. movable mold part to continue to Left movement, until the introduction of agency action, putting the push pusher plate plastic parts dragged down from the punch when clamping the slider by angle pin reset, when injected, sliders were locked up by the wedge block, so that it is in the correct position without molding plastic melt due to the effects of stress loose.
通過微注射成型對聚合微觀結(jié)構(gòu)進(jìn)行分析
摘要
本文介紹了適應(yīng)傳統(tǒng)注塑過程的聚合物微觀結(jié)構(gòu)的大規(guī)模復(fù)制的模具設(shè)計(jì)和工藝控制。使用濕蝕刻硅，我們成功地預(yù)測晶圓與模具鑲件的表面上的微觀結(jié)構(gòu)，并改善和優(yōu)化復(fù)制的結(jié)果。 “微聚合物熔體的流動特點(diǎn)是由模具型腔模擬的實(shí)驗(yàn)得出的。各工藝參數(shù)， 溫度被確定為決定注塑微觀結(jié)構(gòu)質(zhì)量的關(guān)鍵因素。根據(jù)實(shí)驗(yàn)和仿真結(jié)果，提高復(fù)制質(zhì)量，并建立潛在的指引應(yīng)用。由于其速度快，成本低，以微細(xì)的注射成型工藝將導(dǎo)致一個(gè)充滿希望的微注射應(yīng)用技術(shù)。
關(guān)鍵詞：注塑 模具設(shè)計(jì) 注射成型 微注射
由于其獨(dú)特的性能，聚合物的應(yīng)用已越來越廣泛，包括宏觀和微觀的結(jié)構(gòu)。為了擴(kuò)大以MEMS的聚合物為基礎(chǔ)的設(shè)備的領(lǐng)域，重要的是要引入有效的聚合物制造技術(shù)的微觀結(jié)構(gòu)，在于其成本低，精度高。近年來，聚合物的微觀結(jié)構(gòu)技術(shù)已被提出，包括LIGA工藝，它使用熱壓或者注塑重復(fù)聚合物的微觀結(jié)構(gòu)。使用的模內(nèi)鑲件由X射線光刻制造，LIGA工藝提供制造任意微結(jié)構(gòu)可能性，橫向幾何結(jié)構(gòu)和高深度、高寬比，設(shè)備由各種材料，如金屬，聚合物和陶瓷等各種工藝成型。在不同的成型技術(shù)上，注塑是最突出的以成本低，精度高為優(yōu)勢的批量生產(chǎn)。復(fù)制成功的結(jié)果通過使用特殊的聚合物微觀結(jié)構(gòu)已實(shí)現(xiàn)注塑工藝和傳統(tǒng)的注射成型技術(shù)。然而，聚合物熔體在微腔模具中不充分的溶解。據(jù)認(rèn)為，由于大的表面體積比，表面效應(yīng)將主導(dǎo)流動行為的微尺度。
本文旨在探討流動聚合物熔體在微模具腔，并確定必要的戰(zhàn)略，以適應(yīng)傳統(tǒng)的注塑成型聚合物微觀結(jié)構(gòu)的復(fù)制過程。首先， 傳統(tǒng)注塑的直接應(yīng)用在聚合物微觀結(jié)構(gòu)的復(fù)制過程中使用模擬軟件分析。不同工藝參數(shù)的組合模擬研究聚合物熔體的流動行為，工藝參數(shù)和成型質(zhì)量關(guān)系的微觀結(jié)構(gòu)。利用實(shí)驗(yàn)結(jié)果，最顯著的參數(shù)可確定可能的處理策略，可以提出和模擬測試的可行性。最后，這些策略都適用于模具試驗(yàn)以評估其有效性。
模具是國民經(jīng)濟(jì)的基礎(chǔ)產(chǎn)業(yè)，是技術(shù)和裝備制造業(yè)的重要基礎(chǔ)，隨著社會的不斷發(fā)展，經(jīng)濟(jì)的不斷發(fā)展，各種商品不斷產(chǎn)生，其中大部分商品都依賴于多樣化。模具的加工。機(jī)械、電子、汽車、石油化工、建筑五大支柱產(chǎn)業(yè)的發(fā)展也要求模具產(chǎn)業(yè)的發(fā)展與之相適應(yīng)。在制造業(yè)中有模具的重要作用，使模具制造能力和技術(shù)水平成為衡量國家制造水平和創(chuàng)新能力的重要指標(biāo)。近年來，隨著模具制造能力的提高，使得模具具有精度高、壽命長、生產(chǎn)效率高、型腔形狀和模具結(jié)構(gòu)復(fù)雜等特點(diǎn)。
模具技術(shù)是一門非常復(fù)雜的學(xué)科，近幾年來是一門飛速發(fā)展的學(xué)科。以環(huán)形注塑模中的紙片為例，力求體現(xiàn)學(xué)習(xí)新知識和實(shí)用性，結(jié)合近年來模具技術(shù)的發(fā)展，體現(xiàn)對先進(jìn)技術(shù)的重視。在模具設(shè)計(jì)中，詳細(xì)介紹了模具的結(jié)構(gòu)組成、結(jié)構(gòu)特點(diǎn)、工作原理、設(shè)計(jì)要素，在生產(chǎn)中使用的模具設(shè)備、模具材料和熱處理要求，以及副模具的成型工藝。自生產(chǎn)塑料成型以來，注塑成型應(yīng)用最廣泛，但模具結(jié)構(gòu)最復(fù)雜。
對塑料環(huán)形注塑模具中的紙件，如注塑機(jī)的基本結(jié)構(gòu)、澆注系統(tǒng)的設(shè)計(jì)、分型面的選擇、成型部件的設(shè)計(jì)、結(jié)構(gòu)部件的設(shè)計(jì)、機(jī)構(gòu)設(shè)計(jì)的介紹、側(cè)向分型以及著重介紹了牽引機(jī)構(gòu)的設(shè)計(jì)和溫度控制系統(tǒng)。本設(shè)計(jì)采用Auto/CAD軟件對主要零件和裝配圖紙進(jìn)行繪制，雖然對模具的結(jié)構(gòu)有一定的理性的感知和理解，也有一定的時(shí)間和適當(dāng)?shù)恼n程設(shè)計(jì)，但是由于缺乏畢業(yè)設(shè)計(jì)過程中的經(jīng)驗(yàn)，遇到紅色有很多困難，但是通過老師耐心的指導(dǎo)和詳細(xì)的信息獲取，以及學(xué)生討論和解決了很多問題。相信本設(shè)計(jì)能夠滿足設(shè)計(jì)要求，完成實(shí)際任務(wù)。
塑料模具質(zhì)量與生產(chǎn)力水平的關(guān)系，與塑料制品、工藝十分密切。模具結(jié)構(gòu)、型腔精度、表面粗糙度、亞表面位置、脫模方式對塑料零件的尺寸精度、形狀位置精度、視覺質(zhì)量有很大影響。模具的溫度控制、填充速度、澆口位置、排氣管在塑料部件分子取向內(nèi)的尺寸，例如由殘余應(yīng)力水平、光學(xué)和電子支柱確定的凝聚物結(jié)構(gòu)的晶體形態(tài)和機(jī)械性能泡沫、凹陷等產(chǎn)品缺陷與重要關(guān)系。
脫模機(jī)構(gòu)與拉模機(jī)構(gòu)驅(qū)動方式，各作用模式、速度、冷卻方式對速度形成有效而決定性的影響。從模具制造的角度來看，模具零件要求耐用，工藝性能好，選擇合理，制造容易，成本低。因?yàn)槟＞咧圃斐杀痉浅０嘿F，所以其成本對產(chǎn)品的價(jià)格影響很大。
綜上所述，可以看出：對模具的要求是多方面的，在各種制造業(yè)中，人們對這些方面的深入而全面的研究，使模具的生產(chǎn)水平和自動化程度都非常迅速、高效、大型、復(fù)雜、壽命長。模具在模具中的總增長比例。從模具設(shè)計(jì)與制造兩方面對模具的發(fā)展趨勢可以概括為以下幾個(gè)方面：
(1)高速、高效的自動化模具塑料模具現(xiàn)在基本上可以自動脫模產(chǎn)品，自動脫模澆注系統(tǒng)，自動脫模，大型產(chǎn)品或產(chǎn)品不是自動脫模機(jī)械手或拆卸產(chǎn)品，另一側(cè)是拉芯或多螺紋p拉出或自動使用自動側(cè)螺紋螺紋芯結(jié)構(gòu)。
(2)高精度注塑模具能否生產(chǎn)出高精度的塑料零件取決于模具、機(jī)械、原材料、工藝、環(huán)境這五個(gè)因素，只有當(dāng)高精度注塑機(jī)械、工藝穩(wěn)定、環(huán)境不變時(shí)，原材料sh波動小。尤其是高精度模具時(shí)，可生產(chǎn)高精度塑料零件。
(3)隨著大型塑料模具在建筑、機(jī)械、汽車、設(shè)備、儀器、家用電器、洗衣機(jī)滾筒、大板條箱、甚至汽車車身上的應(yīng)用日益增多，這就需要相應(yīng)的大型模具。特別是注塑模具。大型注塑模具物流過程長、彈性變形、自重，因此其設(shè)計(jì)、安裝和使用具有特殊性。
(4)計(jì)算機(jī)技術(shù)與模具加工技術(shù)的完美結(jié)合——計(jì)算機(jī)輔助設(shè)計(jì)(CAD)、輔助工程(CAE)是20世紀(jì)70年代迅速發(fā)展起來的，在80年代已進(jìn)入實(shí)用階段，使設(shè)計(jì)人員能夠提高質(zhì)量，設(shè)計(jì)速度大大加快。
(5)新型模具塑料模具的設(shè)計(jì)制造技術(shù)進(jìn)步比型腔加工最困難，尤其是復(fù)雜型腔的加工。為了縮短成型周期，提高模具精度，減少手工裝配機(jī)等數(shù)量，采用各種坐標(biāo)機(jī)、復(fù)印機(jī)、光控機(jī)床和數(shù)控機(jī)床。二是近年來發(fā)展起來的計(jì)算機(jī)輔助制造模具制造技術(shù)取得了突破，它利用計(jì)算機(jī)程序控制數(shù)控機(jī)床和工件的軌跡和加工程序，完成模具型腔的加工。
(6)及時(shí)研究簡單成型工藝，以便更新產(chǎn)品品種，降低成本，適應(yīng)小批量生產(chǎn)的要求，進(jìn)行簡單成型工藝的研究。這些模具雖然精度差，壽命不長，但成型周期很短，成本低，有一定的范圍。
(7)近年來，模具標(biāo)準(zhǔn)化工作取得了很大進(jìn)展，基本安裝了所有主要類型的模具標(biāo)準(zhǔn)件。塑料模具有標(biāo)準(zhǔn)塑料件、塑料注塑件工藝條件、標(biāo)準(zhǔn)塑料注塑模具工藝條件、塑料注塑模具工藝條件，其中包括標(biāo)準(zhǔn)模板、墊片、推桿、導(dǎo)柱等10余種零件。
（8）特種塑料模具的開發(fā)，如成型氣連續(xù)開發(fā)新技術(shù)和輔助注塑模具的出現(xiàn)、注塑模具制品弓泡、反應(yīng)注射成型模具、多腔注塑模具、注塑模具和多色低泡模具頂頭、多層復(fù)合鼻等。
除采用模具制造鋼制專用模具外，還采用離子注入、物理氣相沉積、濺射、電鍍等特殊表面處理技術(shù)，以提高模具的壽命。新工藝的表面圖案處理可提高塑料零件的外觀質(zhì)量。
成型件形狀比較簡單，為環(huán)形圓柱形構(gòu)件，側(cè)壁通孔直徑為8mm，即要設(shè)置和芯棒拉拔機(jī)構(gòu)，尺寸小，厚度均勻。側(cè)壁厚度4mm，中間圓柱形壁厚3mm。此外，塑料零件的原材料是ABS，這是一種黃色，無嗅，無毒聚乙烯塑料的外觀，但比聚乙烯更輕，更透明。抗密度為1.02～1.05g/CM3。它不吸收水，光澤和易著色。屈服強(qiáng)度、拉伸強(qiáng)度、抗壓強(qiáng)度、硬度和彈性均優(yōu)于聚乙烯。經(jīng)取向后的聚丙烯鉸鏈可制成具有特殊高抗彎曲疲勞強(qiáng)度的斜面。ABS熔點(diǎn)164～170℃，耐高溫，可在100℃以上殺菌。良好的高頻絕緣性能，因?yàn)樗鼈儾晃^緣性能不受溫度的影響，但在氧氣、熱、光的影響下，容易解聚、老化，所以會避開加入抗老化劑。模具的收縮幅度大，容易收縮、凹痕和變形，熱容、注塑模具必須設(shè)計(jì)成能夠充分移動的冷圈，形成合適的模具溫度為80℃左右，不低于50℃，否則會造成成型塑料表面光澤差oR產(chǎn)生接縫和其他缺陷。過熱會產(chǎn)生翹曲現(xiàn)象。塑料流動性好，應(yīng)在工藝中采用高溫高壓注塑的方法，減少應(yīng)力，提高透明度。在模具設(shè)計(jì)制造中，為了盡量減小黎明注射系統(tǒng)的流動阻力，脫模斜坡應(yīng)適當(dāng)代理力，應(yīng)平衡平穩(wěn)發(fā)射，使模具型腔表面粗糙度較小，注意排氣等。
塑料構(gòu)件的上側(cè)有通孔，下側(cè)有凹凸，因此需要用芯的上側(cè)帶有成型側(cè)的芯滑塊，下側(cè)帶有成型腔側(cè)的滑塊。斜柱由模板成型模具底板給定。當(dāng)模具成型時(shí)，塑料袋在沖頭上與活動模具的左側(cè)部分一起移動，在側(cè)角銷芯滑塊和側(cè)滑塊與推板腔的作用下與推板腔一起移動，而在推板導(dǎo)槽的背面向上和下側(cè)移動，所以側(cè)芯和腔側(cè)逐漸移動。ly從塑料零件開始，直到角銷分別從兩個(gè)滑塊開始，側(cè)芯拉出和打字直到結(jié)束。當(dāng)模具導(dǎo)柱斜面時(shí)滑塊上精確插入孔，而滑塊從滑塊上滑出時(shí)角銷固定節(jié)距滑塊將限位裝置置于壓縮彈簧的作用下，側(cè)芯滑塊拉出端同時(shí)抵靠止動件位于E側(cè)空腔滑塊側(cè)分離端由于其自身重力位于止動件上。活動模具部分繼續(xù)向左移動，直到引入機(jī)構(gòu)動作時(shí)，將推板塑料件從沖頭上拖下夾緊滑塊時(shí)通過角銷復(fù)位，在注射時(shí)，滑塊被楔塊鎖住，使其處于正確的位置。由于塑性熔體在應(yīng)力松弛作用下不發(fā)生塑性變形。
開題報(bào)告
學(xué)生姓名
學(xué) 號
專 業(yè)
指導(dǎo)教師
姓名
職 稱
所在系部
課題來源
自擬課題
課題性質(zhì)
工程技術(shù)研究
課題名稱
連接座塑料件注射模設(shè)計(jì)
畢業(yè)設(shè)計(jì)的內(nèi)容和意義
1． 主要內(nèi)容：
（1）利用圖書館、網(wǎng)絡(luò)等資源，查閱和應(yīng)用相關(guān)模具設(shè)計(jì)資料。
（2）編寫模具技術(shù)要求、訂料表；
（3）對工件的工藝性能進(jìn)行分析，進(jìn)行成型零部件、側(cè)向抽芯機(jī)構(gòu)、推出機(jī)構(gòu)、導(dǎo)向機(jī)構(gòu)的設(shè)計(jì)。
（4）繪制裝配圖及零件圖，編寫說明書。
（5）根據(jù)塑件的熱學(xué)性能進(jìn)行模溫調(diào)節(jié)系統(tǒng)的設(shè)計(jì)。
（6）完成外文翻譯
2．畢業(yè)設(shè)計(jì)的意義：
高等工科院校的畢業(yè)設(shè)計(jì)是完成教學(xué)計(jì)劃達(dá)到本科生培養(yǎng)目標(biāo)的重要環(huán)節(jié)。它通過深入實(shí)踐、了解社會、完成畢業(yè)設(shè)計(jì)任務(wù)或撰寫論文等諸環(huán)節(jié)，著重培養(yǎng)學(xué)生綜合分析和解決問題的能力和獨(dú)立工作能力、組織管理和社交能力；同時(shí)，對學(xué)生的思想品德，工作態(tài)度及作風(fēng)等諸方面都會有很大影響。對于增強(qiáng)事業(yè)心和責(zé)任感，提高畢業(yè)生全面素質(zhì)具有重要意義。是學(xué)生在校期間的昀后學(xué)習(xí)和綜合訓(xùn)練階段；是學(xué)習(xí)深化、拓寬、綜合運(yùn)用所學(xué)知識的重要過程；是學(xué)生學(xué)習(xí)、研究與實(shí)踐成果的全面總結(jié)；是學(xué)生綜合素質(zhì)與工程實(shí)踐能力培養(yǎng)效果的全面檢驗(yàn)；是實(shí)現(xiàn)學(xué)生從學(xué)校學(xué)習(xí)到崗位工作的過渡環(huán)節(jié)；是學(xué)生畢業(yè)及學(xué)位資格認(rèn)定的重要依據(jù)；是衡量高等教育質(zhì)量和辦學(xué)效益的重要評價(jià)內(nèi)容。
畢業(yè)設(shè)計(jì)對于一個(gè)即將步入社會的大學(xué)生來說是很有意義的，它是從理論學(xué)習(xí)到實(shí)踐的一個(gè)過程而畢業(yè)設(shè)計(jì)是一個(gè)很好的過度跳板，它能幫助我們快速的融入社會，在企業(yè)里能將所學(xué)的理論知識運(yùn)用到實(shí)際的工作中。
文獻(xiàn)綜述
文獻(xiàn)綜述
文獻(xiàn)綜述
模具作為制造業(yè)的核心，作為制造業(yè)工程師的人員必須要了解模具的基本概念及作用。 （1）模具的定義 模具是一種有一定形狀與尺寸的型腔工具，與模具內(nèi)各種系統(tǒng)或輔助機(jī)構(gòu)配合使用，將各種高溫液態(tài)的材料（塑料或金屬合金等）填充至模具型腔內(nèi)，即可生產(chǎn)出具有特定的形狀、尺寸、功能和質(zhì)量的工業(yè)零件。 （2）模具的作用 在電子、汽車、電機(jī)、儀器、電器、儀表、家電和通信等產(chǎn)品中，60%—80%的零部件都要依靠模具成型。用模具生產(chǎn)零件所表現(xiàn)出來的高精度、高復(fù)雜度、高一致性、高生產(chǎn)率和低消耗是其他加工制造方法所不能比擬的。模具又是“效益放大器”，用模具生產(chǎn)的最終產(chǎn)品的價(jià)值，往往是模具自身價(jià)值的幾十倍、上百倍。目前全世界的模具年產(chǎn)值約有600億美元，日、美等工業(yè)發(fā)達(dá)國家的模具工業(yè)產(chǎn)值已超過機(jī)床工業(yè)產(chǎn)值。 塑料工業(yè)是當(dāng)今世界上增長最快的工業(yè)門類之一。生活中，塑料不出不在，它與我們的生活息息相關(guān)，而我設(shè)計(jì)的老年人隨身聽后蓋是隨處可見的東西，我對它材料的熱學(xué)性能進(jìn)行了充分的分析，然后在多處查閱了相關(guān)資料，編寫了技術(shù)要求，分析了他的性能，完成了成型零部件，側(cè)向抽芯機(jī)構(gòu)，退出機(jī)構(gòu)導(dǎo)向機(jī)構(gòu)的設(shè)計(jì)。在這之后，我又完成了裝備圖及零件圖，編寫了設(shè)計(jì)說明書。最后，完成了外文翻譯。
參考文獻(xiàn)
.
[1] 黃虹.《塑料成型加工與模具》[M]工業(yè)出版社，2003.3 [2] 駿毅科技,關(guān)興舉 等.《UG塑料模具設(shè)計(jì)》[M]人民郵電出版社，2006.2 [3] 朱光力、萬金保 等.《塑料模具設(shè)計(jì)》[M]清華大學(xué)出版社，2003 [4] 中國機(jī)械工程學(xué)會,中國模具設(shè)計(jì)大典編委會.《中國模具設(shè)計(jì)大典》[M]江西科學(xué)技術(shù)出版社, 2001
[5] 伍先明，王群 等.《料模具設(shè)計(jì)指導(dǎo)》[M]工業(yè)出版社，2005 [6] 黃勝杰，機(jī)械科技研究中心.《戰(zhàn)UG工程圖》[M]中國鐵道出版社，2002 [7] M.M.Fisher, F.E.Mark and T.Kingsbury:Energy recovery in the sustainable recycling of plastics from end-of-life electrical and electronic products,《2005 EE International Symposium on Electronics and the Environment》 [M]may 2005 [8] Bill Davies，erge Jonnaert：《uide to Better Hot Runner Control White Paper，MoldflowCorporation》[M]march 2004 [9] 許志，《模具造型的數(shù)字化掃描及數(shù)控加工技術(shù)》[M]制造技術(shù)與機(jī)床，1996年第9期 [10] 趙葛霄，《仿形技術(shù)在模具設(shè)計(jì)制造中的應(yīng)用研究》[M]模具工業(yè)，2001年第2期
研究內(nèi)容
研究內(nèi)容
研究計(jì)劃
1．設(shè)計(jì)、研究思路：
本畢業(yè)設(shè)計(jì)分以下步驟進(jìn)行；
（1）認(rèn)真跟老師溝通，了解所要設(shè)計(jì)的產(chǎn)品；
(2)復(fù)習(xí)以前學(xué)過的知識，理順設(shè)計(jì)的大概思路；
(3)查閱大量資料，細(xì)致化自己的思路；
(4)查閱網(wǎng)上最新資料，開動腦筋，看能不能走出自己的路；
(5)跟老師溝通，看有無出錯；
（6）熟悉各類軟件，如AutoCAD，PRO/E 等;
(7)完成畢業(yè)設(shè)計(jì)的一系列任務(wù)；
2．課題研究的主要內(nèi)容：
圖1.1為連接座零件圖，零件雖小，但有著復(fù)雜的外形和光滑的外表，在設(shè)計(jì)過程中應(yīng)該從產(chǎn)品的結(jié)構(gòu)特點(diǎn)和模具的制造加工工藝出發(fā)盡量簡化模具的結(jié)構(gòu)。
圖1.1
3．解決的關(guān)鍵問題
（1）分析材料的熱學(xué)性能，選擇合適的材料。
（2）確定澆注系統(tǒng)；
（3）型腔的布置；
（4）選擇分型面；
（5）側(cè)孔的成型；
（6）確定脫模方式；
（7）確定開模方向；
（8）塑料充模的流動分析。
這些問題都是設(shè)計(jì)該模具的關(guān)鍵問題，在設(shè)計(jì)過程中，本人將通過查閱有關(guān)文獻(xiàn)資料來解決。
4．預(yù)期成果
（1）塑件模具技術(shù)要求表一份
（2）開題報(bào)告一份，外文翻譯一份
（3）裝備圖一份，零件圖若干份
（4）設(shè)計(jì)說明書一份
特色與創(chuàng)新
近年來，許多新技術(shù)和新軟件在塑料模具中的應(yīng)用逐步增多，在塑料模設(shè)計(jì)制造中全面推廣應(yīng)用CAD/CAM/CAE技術(shù)，在模具設(shè)計(jì)造型方面，PRO/E和UG等軟件得到了大量的應(yīng)用和發(fā)展，塑料制件及模具的3D設(shè)計(jì)與成型過程的3D分析將在我國塑料模具工業(yè)中發(fā)揮越來越重要的作用。
在本次畢業(yè)設(shè)計(jì)，我們將全部用計(jì)算機(jī)輔助繪圖來完成。其中，將使用PRO/E軟件對模具型腔和型芯進(jìn)行3D分模，這是本次設(shè)計(jì)的難點(diǎn)，也是重點(diǎn)。平面圖許多與成型零部件有關(guān)的結(jié)構(gòu)也都需要在3D開模的基礎(chǔ)上繪出來的。
另外，我采用了一模四腔的設(shè)計(jì)，盡量使四件制品有相同的成型條件。在選材上，選用了PP。這將使生產(chǎn)出的制品精度更高，模具壽命更長，適合大批量生產(chǎn)，從長遠(yuǎn)的觀點(diǎn)看，能節(jié)約成本，帶來很高的經(jīng)濟(jì)效益。
指導(dǎo)教師
意 見
指導(dǎo)教師簽名：
20xx年 1 月 21 日
教研室意見
主任簽名：
20xx 年 1 月 22日
學(xué)院（系部）意見
教學(xué)院長（主任）簽名：
20xx年 1 月 23日