塑料底座蓋注塑模設(shè)計(jì)

摘要

本課題主要是針對底座蓋的模具設(shè)計(jì), 底座蓋具有重量輕、易清潔、耐腐蝕老化、強(qiáng)度高、使用壽命長，制作方便、價格低廉等特點(diǎn)。通過對塑件進(jìn)行工藝的分析和比較,最終設(shè)計(jì)出一副注塑模。該課題從產(chǎn)品結(jié)構(gòu)工藝性，具體模具結(jié)構(gòu)出發(fā)，對模具的澆注系統(tǒng)、模具成型部分的結(jié)構(gòu)、頂出系統(tǒng)、冷卻系統(tǒng)、注塑機(jī)的選擇及有關(guān)參數(shù)的校核、都有詳細(xì)的設(shè)計(jì)，同時并簡單的編制了模具的加工工藝。通過整個設(shè)計(jì)過程表明該模具能夠達(dá)到此塑件所要求的加工工藝

塑料制品具有原料來源豐富,價格低廉,性能優(yōu)良等特點(diǎn)。它在電腦、手機(jī)、汽車、電機(jī)、電器、儀器儀表、家電和通訊產(chǎn)品制造中具有不可替代的作用，應(yīng)用極其廣泛。注射成形是成形熱塑件的主要方法，因此應(yīng)用范圍很廣。

注射成形是把塑料原料放入料筒中經(jīng)過加熱熔化，使之成為高黏度的流體，用柱塞或螺桿作為加壓工具，使熔體通過噴嘴以較高壓力注入模具的型腔中，經(jīng)過冷卻、凝固階段，而后從模具中脫出，成為塑料制品。

依據(jù)產(chǎn)品的數(shù)量和塑料的工藝性能確定塑件采用注射成形法生產(chǎn)。該產(chǎn)品設(shè)計(jì)為大批量生產(chǎn)，故設(shè)計(jì)的模具要有較高的注塑效率，澆注系統(tǒng)要能夠自動脫模，此外為保證塑件表面質(zhì)量采用點(diǎn)澆口，因此選用單分型面注射模，點(diǎn)澆口自動脫模結(jié)構(gòu)。模具的型腔采用一模八腔平衡布置，澆注系統(tǒng)采用點(diǎn)澆口成形，推出形式為十六推桿推出機(jī)構(gòu)完成塑件的推出。由于塑件的工藝性能要求注塑模中有冷卻系統(tǒng)，因此在模具設(shè)計(jì)中也進(jìn)行了設(shè)計(jì)。本次的設(shè)計(jì)中不僅參考了大量紙質(zhì)文獻(xiàn)，而且在互聯(lián)網(wǎng)上查閱資料，設(shè)計(jì)過程比較完整。

關(guān)鍵詞  單分型面注射模具 底座蓋  硬聚氯

ABSTRACT

The main topic is covered in mold design for the base, the base covered with a light weight, easy to clean, corrosion-resistant aging, high strength, long service life, making easy, low prices and so on. Through the process of plastic parts for analysis and comparison, the final design of an injection mold. Process from the product structure of the project, specific mold structure starting on the casting mold system, mold forming part of the structure, the top out of the system, cooling system, the choice of injection molding machines and related parameters of the check, there are detailed design, while and simple preparation of the mold process. Through the entire design process that can be achieved in the mold plastic parts required in this process 

  Rich source of raw materials, plastic products, low price and excellent performance characteristics. It is in computers, mobile phones, cars, motors, electrical, instrumentation, home appliances and communication products manufacturer has an irreplaceable role, the application is extremely broad. Pieces of molding thermoplastic injection molding is the main method, so a wide range of applications. 

  Injection molding is the plastic material into the barrel through the heating and melting, making the high viscosity of the fluid pressure with a plunger or a screw as a tool to melt at a higher pressure through the nozzle into the mold cavity, after cooling, freezing stage, then emerge from the mold, a plastic products. 

  Based on the volume and determine the process performance of plastic injection molding method using plastic parts production. The product is designed for mass production, so the design of the mold have a high Zhusu efficiency, feed system to be able to automatic ejection, in addition to ensure the quality of plastic surface using point gate, so we choose a single sub surface injection mold, points gate automatic ejection structure. Mold cavity eight-cavity mold with a balanced layout, gating system using point gate forming, introduced in the form of introduction agencies to complete sixteen putting the introduction of plastic parts. As performance requirements of plastic injection molding process in the cooling system, so also in the mold design to design. The only reference to the design of a large number of paper documents, and access to information on the Internet, the design process is complete. 

Key words ：Single parting injection mould   base cover    Hard PVC

目   錄

前 言 ……………………………………………………………………I

中文摘要 ………………………………………………………………Ⅱ

英文摘要 ………………………………………………………………III

第一章  對塑料成型模具的認(rèn)識 …………………………………………1

1.1模具在加工工業(yè)中的地位 ……………………………………………1 

1.2 模具的發(fā)展趨勢 …………………………………………………1

1.3 設(shè)計(jì)在學(xué)習(xí)模具制造中的作用 ……………………………………2

第二章  原始資料分析 …………………………………………………3

 

2.1 塑件的工藝分析  ………………………………………………3

  2.2 底座蓋原料（PC）的成型特性與工藝參數(shù) ………………………3

2.3  塑件的結(jié)構(gòu)工藝性  ……………………………………………4

2.4  注射機(jī)的選擇……………………………………………………5

第三章  分型面及澆注系統(tǒng)的設(shè)計(jì) ………………………………………7

3.1  分型面的選擇 …………………………………………………7

  3.2  澆注系統(tǒng)的設(shè)計(jì) ………………………………………………8

   

第四章 模具設(shè)計(jì)方案論證 ……………………………………………14

4.1   型腔的布置  …………………………………………………14.

4.2   成型零件的結(jié)構(gòu)確定 …………………………………………14

4.3   導(dǎo)向定位機(jī)構(gòu)設(shè)計(jì)……………………………………………14

4.4   推出機(jī)構(gòu)的設(shè)計(jì)………………………………………………15

4.5   冷卻系統(tǒng)設(shè)計(jì)…………………………………………………15

4.6   模具加熱系統(tǒng)的設(shè)計(jì) …………………………………………16

4.7   溫度調(diào)節(jié)系統(tǒng)的設(shè) ……………………………………………16

第五章 主要零部件的設(shè)計(jì)計(jì)算  ………………………………………18

5.1   成型零件的成型尺寸 ……………………………………………18

5.2   模具型腔壁厚的確定 ……………………………………………19

5.3   推出機(jī)構(gòu)的設(shè)計(jì)…………………………………………………19

5.4   標(biāo)準(zhǔn)模架的確定………………………………………………19

第六章 成型設(shè)備的校核計(jì)算  …………………………………………21

6.1  鎖模力的校核 …………………………………………………21

6.2  安裝尺寸的校核 ………………………………………………21

6.3  推出機(jī)構(gòu)的校核 ………………………………………………21

6.4  開模行程的校核 ………………………………………………21

第七章  模 具 的 裝 配………………………………………………22

7.1  模具的裝配順序 ………………………………………………22

7.2  模具的維護(hù) ……………………………………………………23

設(shè)計(jì)總結(jié) ……………………………………………………………24

附錄：成型零件圖  ……………………………………………………25

型芯三維視圖……………………………………………………30

      裝配圖 …………………………………………………………31

致謝  …………………………………………………………………34

參考文獻(xiàn)   ……………………………………………………………35