In some consumer products, in order to meet the needs of product functions, some buckles and reverse buckles are often designed on the product. Some products not only have undercuts on the outside and inside, but also have some special undercuts and deep ribs inside the product, the front mold cavity is also very deep, the external structure of the product is complex, and there are many undercuts. How do we design the mold structure? Today I will share with you a set of car cover mold structure, hoping to give you some inspiration.
Product feeding method:
There are many kinds of glue feeding methods for products, such as bottom glue feeding, submerged glue feeding, direct gate, corner glue feeding, point glue feeding, etc. This product has strict appearance requirements and high efficiency requirements. This set of molds uses large nozzles for direct glue feeding. ,
Through the slope analysis, it can be seen that there are deep ribs in the front mold of the product, and there is a column position with a depth of 80mm. In order to prevent the product from sticking to the front mold, the column position of the front mold is considered to be designed as a front mold insert. It is very deep. Consider designing the ejection structure in the front mold. This product has a round shape, and there are undercuts all over the product, and some undercut directions are not exactly the same, as shown in the figure below.
Analysis of the front mold structure:
Because the product has a deep cavity in the front mold, there are deep bones and columns inside the product. The columns are designed as front mold inserts, and the deep cavity is designed as a front mold insert. The ribs of the product are designed to prevent product To stick the front mold, we use the buckle mechanism to design the ejection mechanism on the front mold when opening the mold, as shown in the figure below.
The product has five undercuts on the rear mold, only one of which is the normal ejection position, and the other four positions are oblique positions. Because the first position has a long distance, the cylinder core is used here. Structural design, as shown in the figure below.
The product is in the second part of the rear mold, and the fifth part of the slider is the same. When designing, please pay attention: the second part of the slider is next to the first part of the slider. Due to the limited space, the bead of the second part of the slider Only one-sided guide is designed, because the thickness of plate A is very thick, so the oblique guide posts of the two small oblique sliders are fixed with pressure blocks, as shown in the figure below.
The product is an oblique slider at the third part of the rear mold. When designing this slider, attention should be paid to: the core-pulling stroke of the slider is very long. This slider adopts the cylinder core-pulling structure, but there is a very long core inside the slider. It needs to be inlaid and spelled out separately, as shown in the figure below:
The product is an oblique slider at the fifth position of the rear mold. When designing this slider, attention should be paid to: the core-pulling stroke of the slider is very long. This slider adopts the core-pulling structure of the oil cylinder, but there is a very long core inside the slider. The sub, needs to be inlaid separately, the connection method of the oil cylinder, the connection between the oil cylinder and the row insert, as shown in the figure below.
