In some consumer products, in order to meet the needs of product functions, some buckles and undercuts 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 reinforcing 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. When you encounter such a product 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 glue feeding method:
There are many ways to feed the product, such as bottom feed, submersible feed, direct gate, horn feed, point feed, etc. This product has strict appearance requirements and high efficiency requirements. This set of molds uses large nozzles to directly feed the glue. ,As shown below.
Through slope analysis, it can be seen that there are deep ribs in the front mold of the product, as well as an 80mm deep column. In order to prevent the product from sticking to the front mold, the column position of the front mold should be designed as a front mold insert. It is very deep, considering the design of the ejector structure in the front mold, this product has a round shape, and the product has undercuts all around, and some of the 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 bone and column positions inside the product. The column position is designed as a front mold insert, and the deep cavity is designed as a front mold insert. The product's stiffener is to prevent the product For sticking the front mold, we use the button mechanism to design the ejection mechanism on the front mold when the mold is opened, as shown in the figure below.
The product has five undercuts in the rear mold, only one of which is the normal ejection position, and the other four positions are oblique. Because the first position is very long, the cylinder core is used here. The structure design is as shown in the figure below.
The product is in the second position of the rear mold and the fifth position is the same. When designing, pay attention: the second position is next to the first position. Due to the limited space, the second position of the slider is pressed. Only a single-sided guide is designed, and the thickness of the A plate is very thick, so the inclined guide posts of the two small inclined sliders are fixed with pressure blocks, as shown in the figure below.
The third part of the product is an oblique slider in the rear mold. When designing this slider, you should pay attention to: the slider has a long core-pulling stroke. This slider uses a cylinder core-pulling structure, but there is a very long core inside the slider. It needs to be assembled separately, as shown in the following figure: The
product is an oblique slider at the fifth position of the rear mold. When designing this type of slider, pay attention to: the slider has a long core-pulling stroke, and this slider uses a cylinder core Structure, but there is a very long core inside the slider, which needs to be assembled separately. The connection method of the oil cylinder and the connection of the oil cylinder and the row insert are as shown in the figure below.
