Chongqing continuous molding presses manufacturer / Chongqing ug goldsmith stamping stamping die design [15,025,387,227] basic design principle of the mold because of the different mold has been applied in many fields, combined with professional mold manufacturing technology in these years there is a degree of change and development, and therefore In this section, we summed up the general vacuum forming mold design rules. Vacuum forming mold design including batch size, forming equipment, precision conditions, the geometry of the design, dimensional stability and surface quality content. 1, the size of the batch experiment, mold production hours, wood or resin can be manufactured. However, if the experiment is to obtain data by mold shrinkage related products, dimensional stability and cycle time, etc., you should use a single cavity mold to experiment, and can ensure its use under production conditions. Generally with plaster mold, copper, aluminum or aluminum - steel alloy, aluminum is rarely used - resin. 2, the geometry of the design, the design, often considered dimensional stability and surface quality. For example, product design and dimensional stability requirements for the use of a female mold, but require a higher surface gloss of products but require the use of the male mold, so that plastic parts ordering party will consider to these two points, so that the product can at most production under good conditions. Experience has shown that the design does not meet the actual processing conditions often fail. 3, dimensional stability, in the molding process, the surface of contact with the mold plastic parts better dimensional stability than the mold part to leave. If in the future due to the rigidity of the material thickness of the material need for change may lead to male convert to die. Dimensional tolerances for plastic parts can not be less than 10% shrinkage. 4, plastic surface, in relation to the scope of the molding material can encase the surface structure of the plastic parts can be met at the contact with the mold in the molding. If possible, do not light facial plastic parts in contact with the mold surface. Like using a female mold manufacture tub and washtub situation. 5, modified, if the level of use of mechanical saws to amputate plastic clamping edge, in the height direction, at least 6 ~ 8mm margin. Other finishing work, such as grinding, laser cutting or jet must be left margin. The gap between the edge die cutting lines smallest distribution width punching die when trimming is small, these are to be noted. 6, shrinkage and deformation, easy to shrink plastics (eg PE), some plastic deformation, anyway prevention, plastic deformation will occur in the cooling phase. Under such conditions, it is necessary to change the mold to fit the shape of the geometric deviation of plastic parts. For example: Although the plastic wall to keep straight, but it has deviated from the reference center 10mm; can raise the mold base to adjust the amount of this contraction deformation. 7, shrinkage, in the manufacture of plastic mold must consider the following factors contraction. ① molding shrinkage. If you can not clearly know plastic shrinkage, it must be sampled with a similar shape or mold to get through the test. Note: This method can only be obtained by shrinkage, deformation dimensions can not be obtained. ② shrinkage adverse effects caused by the intermediate medium, such as ceramic, silicone rubber or the like. ③ mold shrinkage of the materials used, such as shrinkage when casting aluminum. Phone: 023-88119759 400 Phone: 4000230034 Mobile: 15025387227 Contact: Mr. Sun Address: Jiulongpo District of Chongqing Hua Yan Xishan Village, a community stamping products / Chongqing stamping / Chongqing Mould http: //www.cqjjmj .com / yyhkcn_cqjjmj_tml