分型面是为了将已成型好的塑件从模具型腔内取出或为了满足安放嵌件及排气等

The parting surface is to take out the molded plastic parts from the mold cavity or to meet the molding needs of inserts and exhausts. According to the structure of the plastic parts, the part of the mold that directly molds the plastic parts is divided into several parts Contact surface. Divided into horizontal parting surface, vertical parting surface and composite parting surface. When manufacturing the casting mold, in order to facilitate taking out the pattern, the casting mold is made into several parts, and the joint surface is called a parting surface. Choose as much as possible to ensure the quality of the casting and simplify the operation process. The following aspects are usually considered: <br>1. Place all or most of the casting in the same sand mold as much as possible to avoid wrong boxes and large gaps. Burrs; <br>2. The number of parting surfaces should be small and flat; <br>3. Minimize the number of cores and live blocks; <br>4. The selection of parting surfaces should be conducive to the lower core and the box, so that the cores are placed firmly and easily Check the size of the cavity; <br>5. The parting surface is generally not taken on the decorative outer surface or the corner with an arc; <br>6. Leave the plastic parts on the side of the moving mold to facilitate demolding; <br>7. Concentric parts with high concentricity requirements Put on the same side of the parting surface to ensure concentricity; <br>8. The shaft core mechanism should consider the distance of the shaft core; <br>9. When the parting surface is the main exhaust surface, the parting surface is set at the end of the material flow; <br>10. Generally, a vent groove with a depth of 0.025 to 0.1mm and a width of 1.5 to 6 mm is set on the side of the concave mold of the parting surface. Can also use the ejector rod, cavity, core insert block exhaust. <br>Generally, there are several types of parting surfaces: straight parting surfaces, inclined parting surfaces, stepped parting surfaces, curved parting surfaces, flap parting surfaces and three-dimensional parting surfaces. Because the casting is an axisymmetric structure, according to the design criteria of the mold, this mold adopts vertical parting and opens the mold left and right.

The parting surface is to remove the molded plastic parts from the mold cavity or in order to meet the needs of placement of inserts and exhaust molding needs, according to the structure of the plastic parts, the direct lying part of the mold mold into several parts of the contact surface. It is divided into horizontal type face, vertical type face and composite type face. When making a mould, in order to facilitate the removal of the shape, the mould will be made into several parts, the combination of the face is called parting face. When choosing, try to ensure the quality of the castings and simplify the operating process, usually considering the following aspects:<br>1, as far as possible to the casting of all or most of the same mould, in order to avoid the wrong box and produce large gaps and burrs;<br>2, the number of split faces should be small and flat;<br>3, to minimize the number of cores and live blocks;<br>4, the selection of the typed surface should be conducive to the core, the joint box, so that the core is placed firmly, easy to check the cavity size;<br>5, parting surface generally not taken in the decorative outer surface or with an arc corner;<br>6, so that the plastic parts remain on the side of the moving mold, conducive to release;<br>7, the concentricity requirements of the concentric part placed on the same side of the parting surface, in order to protect the concentricity;<br>8, the axis core mechanism to consider the axis core distance;<br>9, the parting surface as the main exhaust surface, the parting surface is located at the end of the flow;<br>10, generally in the parting surface die side to open a depth 0.025 to 0.1mm wide 1.5 to 6 mm exhaust groove. Can also be used to the top rod, cavity, core mounting block exhaust.<br>Generally, the parting surface has several forms, such as flat-straight parting face, tilt parting face, step parting face, surface parting face, petal parting face and three-dimensional parting face. As the casting is a symmetrical structure of the shaft, according to the mold design guidelines, the mold is vertically divided, left and right open mold.

The parting surface is to take the molded plastic part out of the mold cavity or to meet the needs of insert placement and exhaust molding. According to the structure of the plastic part, the part of the mold directly forming the plastic part is divided into several parts of the contact surface. It can be divided into horizontal parting surface, vertical parting surface and composite parting surface. When manufacturing the mold, in order to take out the pattern conveniently, the mold is made into several parts, and the joint surface is called parting surface. During selection, try to ensure the quality of castings and simplify the operation process. Generally, the following aspects are considered:<br>1. All or most of the castings shall be placed in the same sand mold as far as possible, so as to avoid wrong box and large gap and burr;<br>2. The number of parting surface should be small and plane;<br>3. Minimize the number of cores and live blocks;<br>4. The selection of parting surface should be conducive to lower core and closing box, so that the core can be placed stably and the cavity size can be checked easily;<br>5. The parting surface is generally not taken at the outer surface of decoration or the corner with arc;<br>6. Keep the plastic part on the side of the moving mold, which is convenient for demoulding;<br>7. Put the concentric part with high concentricity requirement on the same side of parting surface to ensure concentricity;<br>8. The distance of shaft core shall be considered for the shaft core mechanism;<br>9. When the parting surface is the main exhaust surface, the parting surface is arranged at the end of the material flow;<br>10. In general, a vent slot with a depth of 0.025-0.1mm and a width of 1.5-6mm is set on one side of the parting surface die. The ejector pin, cavity and core insert can also be used for exhaust.<br>Generally, there are several types of parting surface, such as flat parting surface, inclined parting surface, stepped parting surface, curved parting surface, petal parting surface and stereo parting surface. As the casting is of axisymmetric structure, according to the mold design criteria, the mold adopts vertical parting and left and right opening.<br>