Basics mold parting surface structure rectangular tube Positioner, shown is a common sub-surface positioning device, commonly used in medium-sized mold, pipe-bit blocks and templates from the minimum side dish, the need to ensure adequate strength. Pipe-bit block can create their own or purchase standard parts, and its size can be selected according to the mold size and strength requirements. The mold cavity and core positioning. In addition to forming part of the mold parts need to locate outside pvc hf, inserts and thimble, also need to be positioned. Insert location, the most common way to insert is positioned at the bottom of the processing to a new level, by the step fixed on the template. Height of the steps taken, the small size of the insert can take smaller steps, higher strength require large inserts, relatively large height can take some specific dimensions as the case may be. Between the step and the template need to stay to avoid empty location, purpose is to facilitate disassembly. (It) is the length of the insert positioning steps designed to insert the same length, but may be changed according to the needs of its length. As shown in Figure 2-76, insert length dimension is 10, the positioning step length is 6. Bevel Pillar process is simple, structural strength, when the slider size is large, in order to ensure that the slider in the open mold has enough force to move it to a horizontal direction, the slider should be designed in a plurality of angle pin. Angle pin diameter of the same size should be determined based on the slider, it can not be less than if the small pvc, angle pin easily deformed. Conventional slider pull block, pull the slider block action principle similar Bevel column slider. That mold is opened pvc pvp, pulling block and the slider relative motion, pull the slider is moved along the surface of the drive horizontally, so that from the undercut section. Can not have a gap between the stop surface and the slider, the slider often used to pull the mold block position is small, the use of this kind of approach can save location, and relatively simple, pull the locking slide block both play the role underway the angle pin action. In pulling block slider design, the stop surface and surface angle Stubbs Stubbs blocks must be consistent, inclination angle should be as small as possible, thereby reducing the slider and pull suffered between blocks of force; slide chute should rounded design, to facilitate insertion and increase the strength of pulling the block, such a small stroke of the slider structure suitable for flip size is small. Slider mechanism parameters shown described in detail. Shaped groove slider, the slider groove shape commonly used in the fixed mold side parting institutions. The shaped groove in the locking block slider mechanism, can be used either to pull the block, they can play on the slide locking action. pvc toy | Zhejiang pvc | Gary trade provided by the Shenzhen Municipal Trade Co., Gary. Gary Trade Co., Ltd. of Shenzhen City (www.pft-trading.com) strong, credible, Shenzhen in Guangdong's plastics industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Parfitt trade into the brilliant and you work for a better future!