Positioning mechanism utilizing steel exhaust ventilation, with all the parts are required to locate, the purpose is to locate the part fixed to the location specified by the pvc floor, to prevent its movement, this section describes several mold positioning structure. Formwork fine positioning mechanism design, mold fine positioning means mold clamping process can move 7 set to the desired mode to pinpoint positions to avoid a collision between the two. Use the slope boss locators (in-mold tube bits), many mold factory bosses are working on the slope of a given model moving 丨 core and cavity, in order to take advantage of the boss for precise positioning, that shown in Fig. 2-69 Structure hands. Tips from the pipe-bit block tube position between the block and the template to be installed around the middle of the plate in Mozambique, and positioning, guide balance. Rectangular pipe-bit block diagram above has two parts, but a lot of mold factory in order to reduce the cost of mold will preclude the use of a pipe-bit parts, as shown in Figure 2-74. As can be understood from FIG pvc, scheduled to die in the tube positioning device is working directly on the template set out, thus saving a part. Thimble thimble and insert needle positioning as pvc hose, usually makes a step too positioned. When the top is not flat thimble shape, in order to prevent rotation of the thimble is improperly installed or in an assembly position, usually set at the top anti-rotation positioning structure shown in Figure 2-79 is a common anti-rotation positioning. In addition, it can be processed into a side of the stepped planar circle, or by a pin to prevent rotation. When the outer wall inside 丨 bit parts have concave or convex to the structure, and mold opening direction is inconsistent with the form upside down. Undercut portion can not directly move Shu fixed mold parting, this time to be by the side of the mold parting mechanism to smoothly open. Movable die slider design common movable die slider institutions pulling angle pin and two blocks, two sliders form and can be divided into inner and outer qe need according to the structure. Movable die angle pin slider, shows a typical angle pin slider, mold in the open pvc transparent soft board, angle pin relative motion slider, the slider is moved along the horizontal direction, thereby departing from the fall buckle part. Angle pin block more frequently used in the mold side parting institutions. pvc flower boxes, Nanning pvc, Gary Paffett trade provided by the Shenzhen Municipal Trade Co., Ltd.. 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!