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1、ContentsPart I Foreword .page 3Part II Based on pould frame design mold . .page 4Part III Minute mold module. .page 7Part IV The true fate line and goes against the direction.page 8Part V Conclusion .page 10目 录第一部分 引言. .12页第二部分 基于模架设计的模具. 13页第三部分 分模模块. .15页第四部分 确定分型线和顶出方向. 15页第五部分 结论. 17页Plastic inj
2、ection mold design system1.AbstractThe primary object of the first editeon of this book was to provide a information book on students studying in university, In addition to fulfilling this function, this book has been used increasingly by the novice as an introductory guide, because it progresses in
3、 simple stages from the consoderation of basic principles and components to mote detailed ewplanation of themore complex types of special purpose mould。The revised edition has been divied into three sections: elementary mould design, intermediate mould design, amd aspects of practial mould design. P
4、art One covers mould-making methods includig standard mould parts. Other primary considerations such as feed systems, parting surface andmouldcooling are also covered. Part Two progresses to specificdesigns such as splits, such as splits, side-core, unscrewing, underfeed, and hot-runner types. Part
5、Threeis includes chapters on topics such as procedure for designing an injection mould, checking mould drawings and worked examples etc。In this edition, for size limitation reasons, no attempt has been made to include the more theoretical aspects of mould design.topics such as CAD, aspects of theolo
6、gy, heat transfer, fouid flow, etc.,have been excluded. It is the authors intenion to include these important theoretical subjects in a companion volume which is mow in preparation。In the widespread product scope the more widespread use plastic parts, from the consumption product to the machinery, t
7、he automobile and the airplane, the injection molding craft had been revealed firmly an important fabrication technology, the mold design process usually is new product development very important one step. According to the convention, the mold design has been one very the deification art, needs many
8、 year experiences, only then may the relative familiarity. Because the initial period studies in this art to be quite difficult, more and more few people profit in this domain from the experience and on the knowledge experts body. In order to change the present condition, one of its methods has used
9、 the computer-aided design (CAD) system. CAD takes daily terminology already changes into one kind of widespread ability, and already in application education, school teaching, three dimensional machine design each domain. At present, the majority of CAD system can only provide the geometric modelin
10、g function, these functions can only promote the mold design grass to draw the operation, cannot provide the knowledge which the mold designer needs. Therefore, many attachment the software, for example IMOLD, had already formulated the top level three dimensional modelling platform, by facilitates
11、molds design process. This kind of arrangement in many aspects is likely advantageous, the three dimensional modelling platform provides the plug-in unit type software module storehouse function, as well as establishes a user interface and the design style, therefore, these optional the development
12、time is the big reduction.2.Injection mold designThe injection molding application temperature dependence change material performance, through uses the mold to obtain the final shape separate part to complete or to complete the size close. In this kind of process of manufacture, the liquid material
13、is compelled to fill, coagulates in the die space mold. first, must create a pattern mold to need a design model and carries the box. First, must create a pattern mold to need a design model and carries the box. The design model has represented the end product, but carries the box to represent the m
14、old modules bulk volume. The injection mold design involves the mold structure and the function constituent widespread experience knowledge (heuristic knowledge). In the typical process molds the recent development to be possible to divide into four big stages: Product design, molds ability appraisa
15、l, part detailed design, insertion die space design and detailed mold design. in the initial stage, the product concept is in (usually is together a combination marketing and project) completes by several people. The initial stage main focal point is analyzes the market the opportunity and the adapt
16、ation strategy. In the first stage, the canonical correlation craft manufacture information is increased to the design, designs the geometry detail. The conceptual design use suitable manufacture information transforms as the goods which may make. In the second stage, the drawing of patterns directi
17、on and a minute hairs breadth buy for use examine molds ability. Otherwise, the components shape revises once more. In the third stage, the components geometry is uses for to establish the mold the core and the die space shape, the mold the core and the die space, will use for to form the components
18、. Generally, the contraction and the expansion need to perform to consider, like this, in processes under the temperature, the formation will have the correct size and the shape. The runner, the flow channel, the cold slug well, the vent also need to perform to supplement. Between the geometry data
19、and the minute mold informations relation in this point is very important. The fourth stage and the mold overall mechanism are related, the mold overall mechanism including connects the mold to arrive at the injection molding machine, the injection molding machine is uses in pouring, cooling, taking
20、 out the mechanism which assembles with the mold. Parts of the heat treatment process, in the parts of the access requirements of the hardness At the same time, internal stress control needed to ensure that spare parts processing of the stability of size, different materials were different approach.
21、 Tooling industry in recent years with the development of more types of materials used, in addition to Cr12, 40Cr, Cr12MoV, carbide, on the strength of some of the work, the harsh edge of the convex and concave die, the choice of a new powder alloy steel material , such as the V10, ASP23, such mater
22、ial with high thermal stability and good state of the organization. Cr12MoV response to the material parts, in the rough after quenching, after quenching a lot of the workpiece retention stress, or easily lead to finishing the work of cracking, spare parts should be quenched while it is hot temper,
23、quenching eliminate stress. quenching the temperature controlled at 900-1020 , and then cooled to air-cooled 200-220 released, and then quickly melted down 220 temper, it is known as a hardening process, and the intensity will be high wear resistance, to wear Failure to form molds effective. Encount
24、ered in the production of some of the corner more complex shape of the workpiece and tempering is not enough to eliminate quenching stress, before finishing annealing is needed to stress or multiple-aging treatment, and fully release stress. Against V10, APS23 powder alloy steel, and other component
25、s can withstand high temperatures because of tempering, hardening available in the second hardening process ,1050-1080 quenching and tempering temperature reuse 490-520 and many times, can be more high impact toughness and stability to the collapsing edge as the main form of die failure is applicabl
26、e. The higher cost of steel powder, but its good performance, is a growing trend of extensive use. 3. ExecutionThe fact indicated that the SolidWorks API connection has used the object-oriented method and the API function permission choice object language, for example: As programming language Visual
27、 C+. Using this method, under Windows NT, based on Windows injection mold three dimensional design application software through Visual C+ code and commercial software SolidWorks99 connection development. This divides into several stages using the mold design process, provides the mold designer to ma
28、ke the mold design reliable method. Figure 3 has outlined this frame. Each stage may regard as a stand-alone program module. Several units have succeeded use SolidWorks to develop. In them two template modules and the minute mold module as follows show.3.1 based on pould frame designs mold based on
29、the pould frame designs mold and all modules and the fitting, look like HASCO, DME, HOPPT, LKM and FUTABA may found the parametrization standard template automatically. The designer commonly used may with ease have custom-made templates this kind of pould frame. The main feature includes: Looks like
30、 the prop, the sprue bushing, two boards, the sampan such standard pould frame modules usability, as well as has custom-made the non-standard mold template. divides into four main parts based on the pould frame designs mold, namely the component storehouse (including standard and non-standard letter
31、 storehouse), designs in the table the size actuation function, the structural relation management. In here, SolidWorks has provided the size actuation function is, supports its application. Figure 1 the details introduced based on the pould frame design mold. (1) module storehouse to strengthen the
32、 mold designed capacity day by day in this competition intense world, reduces designed cost and the reduction production cycle, reduces the manpower, the automation and so on achieves this goal primary factor. In other words, uses the computer software is very essential. The computer software can fo
33、und easily, the revision, analyzes the mold design the part, in the renewal change design model. In order to achieve this goal, the three dimensional component storehouse provides the storage standard and the non-standard spare part data, its size is stores up in Microsoft Excel. Through assigns the
34、 appropriate size, these modules may produce and insert the assembly structure. This storehouse is definitely may have custom-made with the designer can put in own part to join the module storehouse. Parts surface left behind in processing Daogen, worn stress concentration is where is the source of
35、crack propagation, in the processing end, the need for spare parts for surface hardening, through fitter grinding, processing disposed of hidden dangers. Some of the workpiece edge, the acute angle, a orifice inverted blunt, R-. In general, processing, the surface will have about 6-10 m metamorphic
36、hardened layer, the colors were gray, brittle and hardened layer with residual stress in the use prior to the full elimination of hardened layer, and methods for surface polishing, sanding to remove hardened layer.In the grinding, EDM process, the workpiece must be magnetized, a weak magnetic, and i
37、s very easy sorption some small things, in the assembly prior to the workpiece for Demagnetization treatment with acetic acid and B lipid cleaning surface. Assembly process, to see assembly, Huaqi all parts, and then shows the various parts of the equipment between the order of the list should pay a
38、ttention to issues, and then proceed mold assembly, the assembly of the general first-loaded I. Introduction sets, and then loaded Die frame and punch and die, and then the entire space, in particular the punch and die space with a group adjustment, the assembly to be implemented after the completio
39、n of mold testing, write the whole report. The problems discovered, the reverse may be thinking, that is, after the process forward from the process, from the rough finishing each inspection, until they find the crux to solve the problem.(2) size actuation SolidWorks has provided the powerful size a
40、ctuation function, supports the parametrization design. Stores up in Microsoft Excel the size and the geometry existence logical relation. When the size establishment and the corresponding thing geometric parameter establishment unifies, may obtain the accurate model.(3) designs the table The design
41、 table permits the designer in inserting Microsoft in the Excel scheduling through the concrete parameter establishment many kinds of spare part dispositions. The design table preservation in the components folder, is the size which uses for to save, stops the characteristic and the performance disp
42、osition, including in the material, module and in customer request components quantity. When increases the suitable size, the design table will contain all essential information, establishes a precise assembly model.(4) structural relation management This part narrated sets up between templates stru
43、ctural relation, can help the mold designer from the design table supplys certain parameter establishment to insert these unit assembling structure, therefore, a specific assembly template may produce automatically3.2 point mold moduleSome minute mold algorithm before has reported. mold design is to
44、 improve the quality of Mould most important step, need to take into account many factors, including the mould material selection, mold structure can be used and the safety of mold parts machinability and Die maintenance convenience, these in the design should be considered the beginning of a more c
45、omprehensive. mould material choice it is necessary to meet customer requirements on product quality, and also taking into account the cost of materials and cycle in the intensity settings, and of course in accordance with the type of mold, the use of methods of work, processing speed, the major fai
46、lure mode, etc. Selection factors. In this aspects development, is divided the mold to use for the processing core and the die space. In injection mold computer-aided design system, this is a most important module. Designs a mold model to need to have the design model, the work piece and the effecti
47、ve minute profile. The design pattern has manifested the end product, but loaded the box to manifest the mold modules total quantity. To divide into the work piece the core and the die space, the design model first removes from the work piece. Then molds with a minute modular surface the work piece
48、half, Chang Zhixing core and die space. When the fusing plastic injection die space, mold oppositions both sides form the end product. After the coagulation, two halves mold along divides modular surface d and d puts aside separately. Then has obtained the actual part. Figure 5the demonstration is divided the mold design process(1) point norm to decisionThe core and the die space open the opposite two directions are divided the norm to approach, for the shape ingredient line, divides the norm to be supposed first to determine. Minute norm t