Mould hot runner selection skills and methods of use

Hot runner selection and use
The hot runner system is a relatively complex technology in the field of injection molding. There are a number of issues that need to be considered when mold design and manufacturer and mold users choose and purchase hot runner systems. Thanks to the experts in the industry who have listed 17 military regulations, Aibang Polymer has carefully organized and specially distributed to the bosses who want to buy the hot runner system:
Hot runner supplier selection
When designing a hot runner mold, the mold manufacturing company does not simply go to the hot runner supplier to buy a hot runner system and put it on the mold. From the conceptual design stage of the hot runner mold to the actual production process of the mold, to the final use of the mold, there are many close and close technical and trade coordination between the mold manufacturing company and the hot runner supplier. Cooperation; so mold manufacturing companies and mold users should choose hot runner suppliers.
When choosing a hot runner supplier, focus on two basic aspects:
1. Number and quality of hot runner components
The hot runner system has three types: hot tip type, SPRUEGATING and VALVE GATING. Each type can be subdivided into many product lines. For example, the diameter of the runner cross section in the hot tip nozzle (NOZZLE) can vary from 4 mm to 12 mm, and the nozzle is also made into a product series of different sizes. There are also many variations of nozzle gate inserts to meet different application requirements, so the hot runner supplier's product line is as rich as possible.
In this way, the user can have greater selectivity of the hot runner components, and the type, size and weight of the plastic parts produced by the hot runners are wider, which is more advantageous for optimizing the injection molding process and product quality.
Ordinary valve needle system.
When injection molding plastic products, the hot runner system and the hot runner mold are operated under high temperature and high pressure load conditions. There are many factors that cause the failure of the components of the hot runner system, and the injection molding process is mainly applied to the production of large-scale plastic parts; once there is any shutdown, the economic loss is very serious.
Ordinary open system.
Therefore, the quality and reliability of the hot runner system is very important. Customers should have an in-depth understanding of the quality and application history of hot runner components produced by hot runner suppliers. Some of the better hot runner manufacturers have been certified by international organizations as ISO quality standards.
2. Technical support and after-sales service
When using hot runner molds, in addition to the reliable hot runner system, users should consider whether there is a problem with the hot runner and whether they can get timely and effective technical support and after-sales service.
Many hot runner suppliers have a strong technical support and service network in the countries and regions where their company headquarters are located, and are equipped with full-time service staff who can access customers at any time for troubleshooting. However, in other countries and regions where their companies are away from their headquarters, these companies often only have some offices that focus on the sales of hot runner products. Technical support is relatively inferior, and users should pay attention to this factor.

Several important points that should be paid attention to in the design of injection molds

Each injection molded product must first determine its mold opening direction and parting line at the beginning of the design to ensure that the core slider mechanism is minimized and the impact of the parting line on the appearance is eliminated.
1. After determining the mold opening direction, the product's reinforcing ribs, snaps, protrusions and other structures are as close as possible to the mold opening direction to avoid the core reduction and the mold life is longer.
2. After determining the mold opening direction, you can select the appropriate parting line to avoid the reverse buckle in the mold opening direction, thus improving the appearance and performance.
Second, the draft angle
1. Appropriate drafting angle can avoid product pulling (drawing). The smooth surface of the draft should be ≥ 0.5 degrees, the surface of the fine grain (sand surface) should be greater than 1 degree, and the rough surface should be greater than 1.5 degrees.
2, the appropriate draft angle can avoid the top of the product injury, such as white, top deformation, burst.
3. When designing the deep cavity structure, the slope of the outer surface should be as large as possible to the slope of the inner surface to ensure that the core is not biased during the injection process to obtain a uniform product wall thickness and to ensure the strength of the material product opening.
Third, the product wall thickness
1. All kinds of plastics have a certain wall thickness range, generally 0.5~4mm. When the wall thickness exceeds 4 mm, the cooling time is too long, resulting in shrinkage and the like, and the product structure should be considered.
2, uneven wall thickness will cause the surface to shrink.
3, uneven wall thickness will cause pores and welds.
Fourth is reinforcement
1. Reasonable application of ribs can increase the rigidity of the product and reduce deformation.
2. The thickness of the ribs must be ≤ (0.5 ~ 0.7) T product wall thickness, otherwise the surface will shrink.
3. The slope of the rib should be greater than 1.5° to avoid head injury.

human resource Management

Mr. Zhong Kefeng, a senior headhunting consultant, believes that human resources management is an effective application of relevant human resources within and outside the organization through the management of recruitment, selection, training, and remuneration under the guidance of economics and humanism, to meet the current and future development of the organization. Need to ensure the organization's goal to achieve and maximize the development of members.
Human resource management is the whole process of predicting organizational human resource requirements and making manpower demand plans, recruiting selected personnel and conducting effective organization, assessing performance payment and effective incentives, and combining the needs of organizations and individuals for effective development in order to achieve optimal organizational performance.
The academic community generally divides human resources management into eight modules or six modules: 1. Human resource planning; 2. Recruitment and configuration; 3. Training and development; 4. Performance management; 5. Compensation and welfare management; 6. Labor relationship management. Interpret the core ideas of the six modules of human resource management to help business owners grasp the essence of employee management and human resource management.
Human Resource Management (HRM) Human resources: refers to the total labor capacity of a population within a certain scope, or the intellectual and physical labor ability that can promote the entire economic and social development. The sum of the people.
Human resource management refers to the use of modern scientific methods to rationally train, organize and deploy manpower combined with certain material resources, so that manpower and material resources are always kept at the optimal proportion, and at the same time, people's thoughts, psychology and behaviors are properly Inducing, controlling and coordinating, giving full play to people's subjective initiative, enabling people to do their best, to get things right, to meet people's needs, and to achieve organizational goals.
Human resource management refers to the process of using scientific methods to coordinate the relationship between people and things, to deal with the contradiction between people, to give full play to people's potential, to enable people to do their best, to get things right, to meet people's needs, and to achieve organizational goals.

Service content of the recruitment outsourcing process

Help large and medium-sized enterprises to optimize recruitment process, integrate recruitment channels, rebuild recruitment system, train and coach enterprise recruiters to improve recruitment skills, build enterprise talents and guide implementation according to enterprise development plan, thereby enhancing talents' support for competitive advantage
1
SME agent recruitment: The demand for corporate recruitment is large, the number of recruiters is insufficient, and the recruitment of newly formed companies is eliminated, eliminating the cost and time of corporate recruitment advertisements, information release, interviews, etc. This service is suitable for technical positions and personnel administrative finance positions, as well as some supervisory positions, but positions that are difficult to recruit are for headhunting positions.
2
Recruitment outsourcing for fresh graduates: Large-scale enterprises carry out campus recruitment for fresh graduates. Time is tight and preparations are cumbersome. Pre-preparation work such as information release, recruitment information promotion, campus presentation, resume reception and screening, first round interview and The written test and other work is outsourced to the talent company. The human resources department of the enterprise can focus on the professional and quality inspection of a small number of candidate students and the final interview, which alleviates the time pressure of the human resources department and improves the efficiency of recruitment.
3
Recruitment process integration consultation: It can help medium and large enterprises to optimize recruitment process, integrate recruitment channels, rebuild recruitment system, train and coach enterprise recruiters to improve recruitment skills, build enterprise talents and guide implementation according to enterprise development plan, thereby enhancing talents for enterprises. Competitive advantage support

China officially released the first national standard for automotive aftermarket parts

On November 29, the China Automobile Dealers Association announced that China officially released the first national standard for aftermarket parts and components GB/T 36684-2018 "Automobile Aftermarket Parts Service Specification", which is regulated by the State Administration of Markets and International Standardization. The management committee approved the announcement and will be officially implemented on April 1, 2019. It is understood that together with the "automobile after-sales parts market service specifications" officially implemented in April next year, there are two national standards of "automobile after-sales service evaluation norms" and "automobile after-sales spare parts market service specifications".
Among them, "Automobile After-sales Parts Market Service Specification" stipulates the basic requirements, service information, service places, service facilities, value-added services, service supervision and improvement requirements of the automotive parts market services around the industry pain points and user needs. In particular, it puts forward system requirements for the qualification requirements, product safety assurance, liability system, business behavior, business ethics, system construction, quality of employees, as well as supply, circulation, use and service of automotive aftermarket parts market operators.
The issuance of the above three national standards has laid an important foundation for standardizing business operations, improving circulation efficiency, improving service quality, and guiding the healthy and orderly development of the industry, and also pointed out the direction of development.
As an auto parts manufacturer, Jingshi is very pleased that China has taken this historic step in the automotive aftermarket parts market, which will promote the development of China's auto aftermarket parts market in a more orderly and healthy direction.