Doing molds with plastic? 3D printing plastic injection mold

Plastic products or parts are produced from injection molds. Injection molds are usually made of a metal with good thermal conductivity. In addition to metal molds, 3D printed plastic molds are used by some companies to produce plastic products. Under what circumstances do you use 3D printed plastic molds? Compared with metal injection molds, what are the issues that need to be paid attention to in 3D printing plastic molds? Save time and cost

Bosch Rexroth, Airbus, Porsche and other companies in the new product development, often need to make small batches of injection products within a few days, and functional testing. As a prototype manufacturer serving these three companies, Wehl & Partner's primary task after receiving customer orders is to quickly manufacture molds for the production of these injection molded products.

Doing molds with plastic? 3D printing plastic injection mold


Wehl & Partner uses SLA (stereo-curing) 3D printing technology to quickly manufacture injection molds using the DSM Somos Perform resin. This material has a good surface finish. If machining is used to make a metal mold, and then using a mold for product injection, it takes 5-7 weeks. With 3D printing molds, injection molded products can be delivered to customers in just 1-2 weeks. The printing material used by Wehl & Partner is a liquid resin material with good heat resistance that can withstand temperatures up to 120 degrees Celsius. The temperature of the mold does not affect the strength and precision of the material during injection molding.

If the material used for injection molding is polypropylene, Wehl & Partner prints plastic molds that can produce hundreds of products. If you are using fiberglass materials, you can produce about 40-50 products per mold.

Metal or plastic?

Is it a metal mold or a plastic mold? Wehl & Partner has explored its own answers through practice. Metal molds and 3D printing injection molds made using traditional processing methods are used by Wehl & Partner when they serve customers. When customers need to produce hundreds or thousands of injection molded products, they use aluminum molds to produce them.

Doing molds with plastic? 3D printing plastic injection mold

Mold insert

If the customer's product design is relatively simple, Wehl & Partner still uses mechanical machining to make metal injection molds. 3D printed plastic molds will be the first choice for Wehl & Partner when product design is complex or when customer deadlines are tight.

SLA is not the only 3D printing technology used to print plastic injection molds. Material injection technology also has this application. For example, Stratasys' Polyject material jet 3D printer can also be used to make injection molds by printing ABS digital materials. Whale, a supplier of heating systems, uses this technology to print injection molds and use them to produce prototypes of new products in small batches. The use of this technology for small batch production in new product development has reduced lead times by 97%.

Mold manufacturer HASCO uses this technology to print complex mold cavity parts, such as inserts, in mass production molds. If the insert of the mold needs to be modified, a faster design modification can be achieved than with conventional mold manufacturing methods. Fast mold change with 3D printed cavities is a fast and economical alternative to traditional methods.

Despite the 3D printed plastic injection mold, it saves time and cost compared to manufacturing metal molds. However, in the injection molding process, the liquid injection molding material has a high temperature, and the quality of the plastic product can be ensured only by uniformly and rapidly cooling after the injection molding. This requires the mold to have good thermal conductivity, and it is not difficult to imagine that the thermal conductivity of plastic cannot be compared with metal. The thermal conductivity of the plastic mold is weak, and the cycle of injection molding becomes long. 3D printed plastic molds are more suitable for the production of small quantities of new products in the development stage, or a small number of urgent products, as well as small and medium-sized injection products.

Turnstile Gate

Turnstile gates are a kind of passage blocking device (passage management equipment), mainly used in urban rail transit management, used to manage the flow of people and regulate pedestrian access.

According to the difference in the number of core and arresting bodies contained in the same gate, the gate can be divided into single core (including 1 core and 1 arresting body) and double cores (including 2 cores and 2 arresting bodies in a symmetrical form). According to the difference of the blocking body and the blocking method, it can be divided into Tripod Turnstile Gate, Swing Turnstile Gate, Flap Turnstile Gate, speed turnstile gate, full turnstile gate, Sliding Turnstile Gate, etc.

Our factory has a complete production line of turnstiles and a strong supply capacity. The products are exported to 256 countries and regions.

Flap Turnstile Gate,Swing Turnstile Gate,Full Height Turnstile,Sliding Turnstile Gate

Guangdong Zecheng Intelligent Technology Co., Ltd ,