For a long time, injection molding industry has considered that geometrically balanced flow path design has provided the best natural balance of multi cavity mold, so properties of each cavity can be consistent (Consistency) (Figure 1A-D) ). Same concept of a naturally balanced runner system is also applied to condition of single cavity mold and multiple gates (Figure 1E). However, although runner system is already in a geometrically balanced state, there is still a difference between inner cavity near center and outer cavity away from center. In most cases, this imbalance will appear in mold above four-cavity. In fact, this imbalance is related to number of runners in runner system and way runners are configured, and it is possible to occur in the case of single cavity mold.
In most of eight-cavity “H” configuration of runner design, product formed on innermost side (closest to tip) is larger and heavier. It is expected that mechanical properties will be different from those of outer cavity. This is especially true when forming glass reinforced grade materials. In addition, it often happens that when product of outer cavity is to be properly pressed, inner cavity has a blunt condition. Over years, this problem has been mistakenly thought to be due to higher temperature in center of mold or deformation of stencil during injection molding.
In recent years, as tolerance requirements for injection molding products have become more sophisticated, overall quality of multi cavity mold production has become more and more important, flow imbalance of this geometrically balanced flow channel system has also received increasing attention. Recent practice of minimizing size of runner due to saving of materials has been found to make this flow imbalance worse.
Solution Installation MeltFlipperTM is designed for flow separation of main flow to secondary flow. It can rotate property difference caused by plastic shearing by 90 degrees to redistribute plastic flow properties and make it distribute symmetrically. Higher temperature, shearing plastic, which originally flows to second flow path, will flow through inner mold wall. After MeltFlipperTM design, it will be reconfigured to flow through lower mold wall. Lower temperature, slightly sheared plastic that originally flows to second flow path will flow through outer mold wall and will be reconfigured to flow through upper mold wall after MeltFlipperTM design.
Although distribution of plastic properties is still asymmetrical, unlike asymmetry of previous temperature distribution, it has now become an asymmetrical state of up and down distribution. This state solves problem of flow imbalance when plastic flows into third flow path to provide a balanced balance of plastic to various cavities. According to this concept, in the case of 16 cavities, 32 cavities or more, or different cavities, more than one set of MeltFlipperTM designs may be required, and design angle of each group of MeltFlipperTM plastics is not necessarily 90 degrees. Its design complexity and plastic properties, flow section geometry/size and injection molding conditions are all related.

 

Diffusion welding is a solid-state bonding technique that uses high temperatures and pressures in a vacuum environment to bring distance between contact faces of two workpieces to an atomic distance, allowing atoms to intercalate, diffuse to bond metal or ceramic components. Compared to conventional welding techniques, diffusion welding can make joints stronger and reduce deformation. Diffusion welding technology advantages and applications, diffusion welding technology does not require flux, joint surface has no stress effect, regardless of material strength and corrosion resistance, same as raw materials.
Diffusion welding technology can weld same and different materials, can be machined, polished and heat treated after welding. Diffusion welding technology applications include mold inserts, heat exchangers, automotive parts, aerospace components, medical equipment and implants, and precious metal jewelry.
Applying advantages of diffusion welding technology, when designing mold, mold manufacturing companies can design a 3-dimensional high-complexity cooling runner system close to cavity according to shape of injection member, process cooling runner on the surface of workpiece, and then two or more workpieces can be joined by a diffusion welding technique to create a block for cooling runner system. Compared with traditional cooling channel processing technology, cooling flow channel made by diffusion welding technology is no longer limited to simple design of vertical and horizontal alignment, nor is it restricted by other structures of mold, such as position of thimble, which greatly increases degree of freedom in designing cooling flow path.

 

Selected composite processing technology refers to integration of selective laser fusion lamination mold manufacturing process and high-speed cutting processing technology, which is a new processing technology. Metal powder laser modeling and compounding technology combines selective laser melting of metal powder, laminated mold manufacturing process of SLM) and traditional high-speed cutting processing technology, which is a combination of processing method of opposite direction of lamination molding and removal processing, comprehensive Integration of materials technology, computer software technology, laser technology and CNC machining technology. Principles of Japanese Composite Metal 3D Printing Technology: Composite metal 3D printing technology combines metal powder laser selective melting (3D printing) and cutting (CNC high-speed cutting processing) into one. This printer uses a metal laser forming compounding method to combine deposition of laser-melted metal powder with finishing based on cutting, and has characteristics of additive and material reduction.

Metal photoforming composite processing is a step of cutting a section of a cross-sectional shape in a forming process in which a thin layer of a metal powder is selectively melt-solidified by a laser and a cross-sectional shape is deposited. Not only can it create complex shapes that are difficult to achieve by cutting alone, but it also improves surface roughness problems in deposition molding and improves accuracy.

This composite processing technology is both highly flexible and has sufficient processing precision. It is characterized by one-piece and integrated processing of internal profiled water and exhaust. Disadvantages: However, surface shape is complex and it is difficult to implement precision mold parts for subsequent processing. Japan's composite metal 3D printing technology application and classic application case sharing: OPM250L equipment has a number of new technologies and applications. Comparing display center of Japanese headquarters, the world's first single-head laser 4-point sintering technology, Japan's aviation industry using OPM250L equipment to complete satellite lightweight PJ case, Japanese mold manufacturing companies using OPM250L equipment to achieve mold mirror performance 3D printing technology, composite metal 3D printing results in many cases such as cutting.

 

Additive manufacturing remodeling metal processing Conformal cooling provides revolutionary cooling functions, such as injection molding applications that minimize cycle times. Integrated cooling circuit reduces heat transfer of deflector in combustion chamber of a large load engine. Maximize efficiency and reduce fuel consumption. Additive production of crowns and bridges in dental field. Flexible and the most complex hydraulic or pneumatic valves produced with the least amount of material. Produce available prototypes in one day with materials produced in large quantities. Reduce development time by weeks or even months. DMG MORI's unique hybrid (additive manufacturing and traditional manufacturing) machining solution is a new technology that combines milling technology with laser metal deposition machining for a LASERTEC 65 laser melting with full milling capabilities.
This process uses a powder nozzle that is 20 times faster in powder bed than laser sintering. Market for additive manufacturing technology has been growing rapidly, but to date, in most cases it is only suitable for production of samples and small parts that cannot be produced by other methods. By combining additive manufacturing with traditional material reduction manufacturing on one machine, additive manufacturing capacity is further expanded and complemented to replace traditional machining methods that compete with milling and turning operations. DMG's Hybrid Manufacturing Technology SAUER LASERTEC Laser Technologies, Inc., known for its laser etching technology, is part of DMG MORI Group and has been working with DMG MORI USA on research and development of hybrid machining solutions. This company introduced a diode laser unit with a laser metal deposition process and a LASERTEC 65 additive and subtractive composite laser cladding machine with full milling capabilities.
“By combining additive processing technology with milling and turning technology on one machine, additive processing technology is no longer limited to small workpieces,” said DMG MORI Senior Vice President and Chief, Advanced Solutions Development Technical Executive Gregory A. Hyatt explained, “Our focus is on creating a solution in industry that can process more typical and larger workpieces, such as aerospace industry, mold and energy industries, to achieve faster metal deposition, higher production efficiency and more reasonable economic benefits.” Unlike laser sintering technology using powder beds, processing technology using powder nozzles allows manufacture of large parts.
Its 3.5kg/h deposition rate allows process to be processed up to 20 times faster than laser sintering process using a powder bed. Combined with milling process, this technology is possible with new applications. This type of part can be machined in sections. Milling operations are required for important parts that require precision machining. However, in some parts of middle, milling cutter is inaccessible after deposition process. DMG LASERTEC 65 3D Metal Printing hybrid machining machine combines high precision of milling with high surface finish with flexibility and high deposition speed of laser powder deposition. “For whole part processed by traditional milling process, material waste rate is over 95%, while mixed processing technology can save considerable production cost, material waste rate can be reduced by about 5%.” LASERTEC 65 Additive Manufacturing Laser Cladding Machine is equipped with a diode laser device instead of a tool. Sprayed metal powder material is added to laser beam to cause metal powder to be laminated on substrate layer by layer. Thereby, powder and substrate are fused together without pores or cracks. A high-strength welding effect is formed between metal powder and surface of substrate. After cooling, deposited metal layer can be processed by mechanical means.

 

Electron beam PIKA surface processing unit EBM "PF100S / PF300S" is a device for surface modification by electron beam irradiation, which is used for molds, medical fields, acrylic resin products, titanium products, and ceramic products. In order to achieve purpose of modifying surface layer of about 5 μm on irradiation surface, it is modified to a smooth surface without losing accuracy of electron beam before irradiation. In addition, in order to improve occurrence of extremely small defects, cracks and streaks, product has advantages of improving water repellency and corrosion resistance, suppressing mold scale generated during resin molding, improving product quality stability, and has new processing technologies suitable for various fields. Extending service life of mold by reducing durability of product, number of maintenance of mold is reduced. During processing of electron beam irradiation, sudden heating is continuously performed on the surface of workpiece and normal temperature is switched. This makes it possible to modify structure of surface of workpiece and improve its corrosion resistance. While mold release property of molding die representing plastic molding is further improved, purpose of shortening molding cycle can be achieved. In addition, in order to increase lubricity of stamping die, effect of solving problem of residue clogging is excellent.

 

About Microfoaming Process Technology, Plastic micro-foaming process (MuCell®) is used to inject supercritical fluid (N2 or CO2) into machine tube and mix supercritical fluid with plastic into a uniform single-phase fluid through screw. Homogeneous mixture of supercritical fluid and molten polymer causes thermodynamic imbalance due to instantaneous pressure drop during injection molding process, so that gas can diffuse into nucleus from molten plastic and grow into uniform fine bubbles after fluid enters cavity. Plastic containing fine bubbles is solidified by cooling with a mold to obtain a finely foamed finished product. This process saves process cycle time and saves process cycle time while solving problem of uneven shrinkage and warpage of traditional injection products, which greatly improves product dimensional accuracy. In addition, micro-foaming process has a shorter production cycle than general injection process, and its products use gas as a foaming medium to combine advantages of process environmental protection and product weight reduction, and product plastic can be recycled.

In 1993, MIT authorized Trexel to carry out commercial process development. In 1997, it developed PS micro-extrusion foaming process (MuCell). Engel introduced micro-foam injection molding machine (MuCell Molding) in 2000. In March 1993, Trexel filed a patent for injection molding process in Taiwan. In October 2000, Asahi Chemical announced development of Amotec technology. In 1998, Taiwan ITRI/UCL began research and development of micro-extrusion foaming process. From 1999 to 2000, it continued to develop micro-foaming extrusion and injection molding technology.

Micro-foam molding technology has superior physical properties, its cell density is very high (106~109cells/cm3), its foam density can be controlled between 0.03~0.95, and it has high tension resistance and compressive strength, high stability under high heat, low thermal conductivity, low temperature, low dielectric constant and good signal transmission performance. It has high pollution-free cleanliness and is suitable for manufacture of biomedical porous materials. Compared with unfoamed products, it has high impact strength, high toughness, specific strength, high fatigue resistance and long product life.

 

ACMT Association's Scientific Test Technology Center believes that theory is also applicable to intelligent injection moulding plant, and also it is integrated into process improvement of intelligent injection moulding plant. 6M in the injection moulding plant refers to informationization of manufacturing process. Through integration of system, entire manufacturing process is automated and optimized. 6M system includes:
◆ Model: Refers to model building and simulation.
◆ Measurement: Refers to inspection and product control of production process.
◆ Method: Refers to injection molding production parameters and processes.
◆ Machine: Refers to injection molding equipment and peripheral auxiliary machines.
◆ Material: Refers to plastic materials and parts.
◆ Maintenance: Refers to maintenance of equipment and molds.
In Model part, injection moulding products need to analyze process requirements of plastic products at design stage, molding design for DFM (Design for Manufacturing) needs to support development platform across design and manufacturing links. Molding design process, CAD and CAE system work as a senior engineer or expert, allowing engineers to prepare prerequisites and layouts for CAE environment during CAD process. CAD/CAE integration technology is developed to provide plastic parts and technical support for mold design. CAE technology helps craftspeople evaluate feasibility and deficiencies of injection molding process at product design stage, predicting potential manufacturing risk, validate impact of optimized design and manufacturing processes on injection moulding products.
In measurement section, engineers used to focus on process control based on injection molding machine parameters. However, in recent years, injection molding control systems based on cavity pressure have proven to be an important method to ensure high consistency and quality of production processes. Large number of equipment manufacturers such as KraussMaffei, Arburg, and Engel Engel can be confirmed. In-mold sensors such as melt temperature, mold temperature, melt speed, and melt front position are available for balance confirmation of multi-cavities, traceability of defective products, verification of mold flow analysis, shortening of molding cycle, temperature rise of shear viscous, optimization of molding conditions, etc., imply possibility of various applications, effectively utilizing measured data, coupled with mold flow analysis and automation engineering can improve production efficiency. In process part, due to complexity of equipment, personnel, and manufacturing processes in injection molding industry, some of key processes are limited by resources such as injection molding machines, or other special circumstances, resulting in coexistence of multiple processing processes. For use of different processes, a set of molds must be combined with multiple sets of equipment to produce, need for engineering personnel to participate, how to make engineering personnel have correct test model knowledge and skills is particularly important, so it is necessary to continuously improve craftsmanship of field personnel through on-the-job training.

 

In 2016, ANSYS became the first engineering simulation software company in the world with an annual turnover of more than 1 billion US dollars. Revenue scale has surpassed many CAD/CAM software suppliers, and era of CAE-led design has officially announced. In February 2017, Hexagon Group, a leading injection moulding plant of precision measuring tools, acquired CAC's veteran company MSC Software for US$ 334 million, which not only symbolizes a major step for hardware companies to enter digital design world, but also means measurement data of real manufacturing environment will be closely integrated with simulation analysis to help company break through limits of product design optimization and traditional manufacturing, and lead manufacturing industry to broad road of Industry 4.0.
These changes and integrations will continue to drive creation and innovation of global electromechanical-related industries. Concretely, same design optimization and simulation technology development is being replicated in the world of injection molding and molding design. Mold flow analysis was first used only to diagnose plastic product design and help solve production problems. Evolution has been widely used in industry today to design, verify and optimize product, mold development in early stage of design and plays an indispensable role in design and production processes of most mold manufacturing companies.
In process of this evolution, universal application of full 3D products and mold design CAD software is the first priority, and automated grid generation tool is even more important. Early analysts often take hours or even days of processing model builds grid to begin the analysis. Now with fully automatic eDesign and BLM (Boundary Layer Mesh) mesh generation technology, it is possible to generate a single-key mesh and even update grid when modifying products. As a result, standard mold analysis has gradually shifted from professional CAE analysts to mold designers and even upstream product designers.
Product design and mold designers have also become accustomed to relying on mold flow analysis software to help determine gate location, balance runner design, optimize waterway configuration, solve warpage problems, and more. Many mold manufacturing companies have even begun to embed MLM core into company's internal design guidance platform to achieve a design management of each product that has been subjected to mold flow analysis to automatically verify upper limit of injection pressure, shrinkage and warpage. At the same time, computer clustering parallel operation of internal private cloud greatly reduces calculation time and speeds up response.
To help users save a lot of time and get the best 3D flow channel mesh for MLC analysis, Moldex3D R15.0 version has evolved a new generation of automated high quality flow channel mesh construction technology. New runner mesh technology automatically generates high-resolution hexahedral meshes, providing users with multiple node types to link linear runner boundaries, truly reflecting original geometry of runner, helping to further reduce computation time and improve simulation accuracy.
Birth of "non-matching mesh" technology enables mesh interface between product and insert to be simulated and analyzed without need for continuous and quantitative, correct simulation result distribution and linkage component deformation prediction can be obtained. Moldex3D R15.0's non-matching mesh technology can only be extended to support mold base grid by using only part inserts. It can't pre-automatically construct 3D solid mold base network under condition that product does not match insert mesh node. Limitation of grid allows user to speed up processing efficiency and analysis accuracy of mold base grid, so that all users can experience efficiency and precision of simulation analysis brought by high-quality grid technology.
Engineers' needs and expectations for CAE are endless. In addition to simulation analysis of standard injection molding processes, Mold Flow Analysis feature now covers special processes such as injection compression molding, compression molding, and metal powder injection molding. Fiber reinforced composite material of staple fiber and long fiber fiber in mold manufacturing process is integrated with FEA analysis, which is recognized as advanced function of Moldex3D and adopted by leading global automotive manufacturers, engineering plastics leaders.
Moldex3D R15.0 further extends these advantages to compression forming process analysis of fiber composites, helping users to design and optimize manufacturing process for large fiber reinforced composites.
In addition to complete support of fiber reinforced composite process, Moldex3D has already introduced gas-assisted injection, water-assisted injection, micro-foaming (representative technology: TreCel's MuCell®), and chemical foaming of thermoplastics into scope of simulation prediction, and has obtained good verification data and experience. The latest R15.0 chemical foam molding module is updated to support polyurethane (PU) foaming process, considering crosslinking dynamics (Curing Kinetics) and foaming dynamics (Foaming Kinetics) calculation of melt in cavity. Through polyurethane foam simulation analysis, users can better understand manufacturing process and accurately predict dynamic behavior of filling and foaming stages, confirm optimal control of injection conditions and raw material injection, thereby optimizing product design, making it easier to evaluate production conditions that determine suitability.
In recent years, injection molding production of in-mold decoration has been popularized, but it still faces many challenges in forming processes such as ink scouring and wrinkle deformation, resulting in cost increase and time delay of product development. Moldex3D R15.0 provides dedicated analysis capabilities to support film boundary options in in-mold pre-simulation process to help users process trim mesh layer in fastest, simplest and most accurate way. At the same time, “scouring index” is provided to allow product designers to predict scouring status and ensure output of high quality in-mold decorative products. By analyzing flow wavefront which can be predicted to be in good agreement with actual results, it is also possible to understand heat hesitation phenomenon in mold manufacturing process, which is caused by poor thermal conductivity of decorative layer.

 

Industrial sector is playing an increasingly important role on a global scale and is an important force driving technological innovation, economic growth and social stability. But at the same time, market competition is becoming more intense. Customers need new, high-quality products that require faster, faster delivery of products tailored to customer requirements. In addition, productivity levels must continue to increase. Only those companies that can produce their products with less energy and resources can cope with growing cost pressures. Solution lies in virtual production and integration with real-world production environments, using innovative software, automation technology, drive technology and services. These can reduce time-to-market, increase productivity and flexibility, and help industrial companies maintain a competitive advantage in the marketplace.
Faced with increasing global competition in industrial sector, increasing cost and time pressure, energy saving, emission reduction, cost reduction and substantial increase in production efficiency are urgently needed. Concept of “integrated engineering design” refers to perfect synergy between all hardware and software, implementing various functions such as plant management, process control system and equipment design and configuration in one system.
◆ Importance of 3D graphic design in manufacturing industry. Before mold company is in MES or ERP system, please make sure that design is standardized. Otherwise automatic scheduling and process will be derailed, efficiency can not be improved. At present, most mold companies do not have corresponding expert systems to support standardization and knowledge.
◆ It is difficult to standardize and knowledge in molding design process. Application of mold expert design system is an important means for enterprises to cope with change and enhance competitiveness.
◆Internal knowledge structure brought by different design methods plagued enterprise. Everyone's understanding of software leads to different operations, understanding communication bottleneck brought by different, unable to meet “pyramid” type human resource structure of enterprise, deepening dependence of enterprises on so-called "software master" and "design master".
At present, problems faced by mold manufacturing companies are mainly low intelligence, relying entirely on design engineers' thinking and experience. Degree of automation is low, and a large number of simple repetitive actions need to be completed by design engineers, which does not produce benefits. Existing design processes are cumbersome and design efficiency is low. Similar mold need to be designed from scratch, no connection, can not build knowledge base sharing. There are many design systems, whole 3D molding design is difficult to popularize, basically stay in mixed form of 2D+3D. UG secondary development based on molding design, Most of them only establish company's standard parts library and realize some simple functions. Existing design standards can't be executed, and there are paper design specifications, but it is often not at the time of design, which leads to design of each person's organization, details are not same, resulting in loss of manufacturing process controls in the next process. Establishment process and results of enterprise standard parts library cannot meet rapid development. Enterprises urgently need new technologies to enhance market competitiveness.

◆ MOLD full 3D molding design automatic solution, based on market demand, equipped with NX platform full 3D molding design automation solution, providing automatic product analysis, rapid parting, loading mold base, loading standard parts, one-button open cavity, one-button output BOM and one-button output, using modular, standardized, and automated ideas to simplify modeling process of mold designer, automatically process statistical part information, improve mold design efficiency, reduce error rate, and save costs.

Fast and accurate quotation is the first step in obtaining a production order. More and more business practices show that accuracy and speed of quotation will seriously affect mold manufacturing companies' ability to obtain business. Excessive quotations mean that potential orders are lost to competitors, thus reducing competitive advantage of injection moulding plant; quotation is too low, although it may win order, but it may not be able to make a profit. Therefore, fast and accurate quotation is an important indicator of competitiveness of mold manufacturing companies. Mold valuation is generally cost estimate of head of plant-side project, quotation action is completed after business side considers comprehensive factors to adjust profit. Such a structure allows mold to be quoted more accurately.

Before mold is evaluated, it is necessary to clarify basic specifications of quotation, also known as mold specification, in order to make a more accurate price. These basic needs include project information, finished product information, molding information. For example, project information includes finished product output; finished product information needs to include finished material used; mold information has guaranteed mold (die life) and number of mold holes; molding information includes tonnage of molding machine. For details, please refer to Figure 1: Example of a plastic mold specification. With specification, mold can be evaluated. Valuation of mold includes three parts: material cost, processing cost (including design and CAM) and profit from management. After summary, it can be divided into three valuation methods:

Use your own experience to make an estimate. There are several ways to use empirical formula method. Some masters can estimate size of finished product by simply measuring size of finished product. Material cost is calculated from size, material and unit price of material. For example, some mold manufacturing companies divide mold into three types: large, medium and small. Material cost of large molds accounts for 30%~35%, medium molds accounts for 20%~30%, small molds accounts for 15%~20%. . Then calculate material cost based on mold size and material unit price, use material cost divided by percentage of material to quickly estimate mold cost. Precise method is to set more parameters, such as finished product size, appearance requirements, mold accuracy, and difficulty level, respectively, as a parameter. When different values of parameters are selected, different prices are generated. This method is quick to estimate and accuracy varies according to experience. Main specifications and parameters of plastic parts and molds are shown in Figure 2 below, corresponding costs can be generated after filling.

It is also called history template method. After each order is closed, it is sorted out (for example, cost of previous heavy work and scrapped part is removed) and saved as a template. At next evaluation, search for similar templates that were previously accessed, retrieve relevant information, and then make adjustments based on actual situation (see Figure 3). This method is suitable for molds that have been previously made, because estimated cost is based on experience of predecessors, and estimation results are relatively fast and accurate.

Get a set of molds to expand one by one, expand mold base (die base), mold core (core), hardware and copper materials, then calculate material cost according to price of material; processing costs are also in accordance with design, machine processes such as machining, CNC, and discharge. Processing cost is calculated according to unit price of each process and number of working hours processed. Cost of sales and profit is multiplied by a factor of approximately 15% based on material and processing cost. Price of mold can be obtained by adding material cost, processing fee, sales and profit (see Figure 4). This method is relatively accurate, but evaluation time is relatively slow. With some CAD software, you can quickly disassemble main parts and then calculate cost. This method is suitable for molds that have not been done before.

Big data and artificial intelligence are hot topics in near future, and most of them have also been applied to mold manufacturing companies. Big data technology can categorize, match, analyze and make decisions about historical quotation information. Big data integrates relatively independent quotation information in a highly integrated way, breaking original information barriers and realizing integration of informationization. When users quotation, big data will match all links and parameters in quotation, like quotation details of products, market price of similar materials, working hours rate of similar processes and so on. These data can't be matched by hand, and can't match similar and closest to current quote information, which can be easily achieved through big data. It also provides a relevant, one-to-one solution to details of quotation, making quotation more accurate. In practical applications, different methods can be selected for valuation according to specific situation, or four methods can be combined for cross-comparison to estimate the most reasonable mold price.

After evaluation of mold is completed, cost of mold is known, which provides a basis for price of mold. In addition to estimated cost, mold quotation needs to be adjusted according to product type, its own production capacity, market conditions, customer psychology, competitors, etc. Some mold manufacturing companies use cost factor to multiply proportional coefficient to quote. When production capacity is full, it may be multiplied by a profit factor as a quotation on basis of cost; in the case of insufficient production capacity, in order to make injection moulding plant move, cost of mold is compensated by producing product according to cost of taking orders or even taking orders below cost price. In addition, many mold manufacturing companies have both mold factories and injection moulding plant. Such enterprises will adopt method of quoting finished products and supplementing price of molds to make mold quotations. That is, mold as cost of research and development, only report cost price, may even sacrifice mold to take order, then use total price of mold plus finished product to consider quotation, and comprehensively calculate profit of order according to quantity of finished product required by customer.
In summary, different valuation methods are selected according to different needs, with actual conditions of tools and market, each time corresponding adjustment is made to make a quotation of mold. However, the most accurate way is to determine actual cost of mold after ordering, which is the most accurate basis. However, accumulating actual costs by manual means has a long period of time, involving many departments and collecting inaccurate conditions. Only through big data can you solve such a detailed and cumbersome process. With big data, not only can new mold manufacturing process cost be accumulated as inspection of current quotation and accumulation of experience, but also cost of maintenance and repair after mass production of mold can be expanded.
Calculate reason for each mold repair, then use management method to analyze, establish a set of mold history, accumulate mold development experience. With this reference to historical data, we can clarify direction of mold improvement, making our molds more sophisticated and lower cost.