One: The design of the disposable meal box mold inlet flow channel is focused on
1.The inlet should be opened in the thick part of the product to ensure smooth and complete filling
2.As far as possible in does not affect the appearance and function of the product, can be at the edge or bottom
3.In the cold material hole near the gate, the pull rod is often set at the end to facilitate the pouring release
4.Large or flat products, it is recommended to use multi-point feed pouring, to prevent product warping deformation and lack of material
5.Its position should be selected to minimize the plastic filling process, in order to reduce the pressure loss, is conducive to the disposable meal box mold exhaust
6.Avoid opening gates near the long and thin core, so as to avoid direct impact of the material flow core, deformation, dislocation or bending
7. The gate size is determined by the product size, geometry, structure and plastic type. You can take the small size first and then correct it according to the mold test condition
8.Through mold flow analysis or experience, we can judge whether the joint line of the product affects the appearance and function of the product, and cold material holes can be added to solve the problem
9When the number of multiple cavities exists，the same product adopts symmetrical feeding method. When different products are formed in the same mold, the product is preferentially placed in the position close to the mainstream channel
Two:Plastic mold design considerations
1.Don’t only focus on product design and ignore mold manufacturing.Some users in the development of products or new product trial production, often only pay attention to product development and development at the beginning, ignoring the communication with the mold production units. After the preliminary determination of the product design scheme, the advance contact with the mold manufacturer has the following three benefits.
(1) It can ensure that the designed products have a good forming process, and will not modify the finalized design because it is difficult to process the parts.
(2) The mold making of disposable lunch box can make design preparation in advance to prevent poor consideration in the hurry and affect the construction period.
(3) To make high-quality disposable meal box molds, only the close cooperation between supply and demand can finally reduce the cost and shorten the cycle
2.Don’t just look at the price, but also consider the quality, cycle, and good service
(1) There are many kinds of disposable meal box molds. According to the parts material, physical and chemical properties, mechanical strength, dimensional accuracy, surface finish, service life, economy and other different requirements, choose different types of mold forming.
(2)The mold with high precision requirements need to use high precision CNC machine processing, and the mold material, forming process have strict requirements, but also need to use CAD / CAE / CAM mold technology to design and analysis
(3)Some parts due to the special requirements of molding, the mold also needs to use heat flow channel, gas auxiliary forming, nitrogen cylinder and other advanced processes
(4) The manufacturer should have CNC, electric spark, wire cutting machine tool and CNC imitation milling equipment, high precision grinder, high precision three-scale measuring instrument, computer design and related software, etc.
(5) General large stamping mold (such as automobile cover mold) to consider whether the machine tool has a pressure edge mechanism, multi-station level into, etc. In addition to the punching tonnage but also consider the punching time, feeding device, machine tool and mold protection device.
(6) The manufacturing means and technology of the above disposable lunch box mold are not possessed and mastered by every enterprise. When choosing a cooperative manufacturer, we must understand its processing ability, not only look at the hardware equipment, but also combine the management level, processing experience and technical strength.
(7) For the same set of disposable meal box mold, different manufacturers sometimes have a big gap between prices. You should not pay more than the value of the mold, and you should not be less than the cost of the mold. Mold manufacturers, to make reasonable profits in the business. Customizing a much lower quoted disposable lunch box mold will be the beginning of the trouble. Users must start from their own requirements, as appropriate measurement.
Post time: Feb-18-2023