1. The basic composition of the mold (1) Front mold (master mold) (fixed mold), (2) rear mold (male mold) (moving mold), (3) insert (insert), (4) row position (slider), (5 ) oblique top, (6) thimble, (7) gate (water inlet) 2, the influence of the shape of the mold product on the product Wall thickness, geometric shape, will affect the forming shrinkage, the draft angle 3. Influence of water inlet on product shrinkage rate If the size of the water inlet is large, the shrinkage rate is small, and when the size is small, the shrinkage rate is large, the flow direction is parallel, the shrinkage rate is large, and the vertical direction is small. 4, the mold wall thickness is too large, the wall thickness is too small The wall thickness is too large: (1) Increase costs (2) Prolonged forming time and reduced production efficiency (3) Quality is difficult to control, easy to appear bubbles, shrinkage holes, depressions, etc. The wall thickness is too small: (1) The resistance of plastic flowing in the mold is large. If the shape is more complicated, forming will be difficult (2) Poor strength If the wall thickness of the plastic part is not uniform, the shrinkage will be uneven after the forming process, and not only bubbles, depressions, deformations but also large internal stresses will be present. 5, rounded corners (R position) Set the fillet (R position) to increase the strength so that the plastic part does not deform or crack 6, stiffeners (1) In order to ensure the strength and rigidity of the product without making the wall thickness of the plastic part, reinforcing ribs may be provided at appropriate portions of the plastic part to prevent deformation, and in some cases, the problem of plastic flow during forming may be improved. (2) The thickness of the ribs should not exceed 50% of the plastic parts, usually around 20%. (3) The rib should be lower than the plane of the plastic part 7, the hole (1) The periphery of the hole is prone to weld marks, which reduces the strength of the plastic part. Note: the distance between the hole and the hole, the hole and the plastic part should generally be more than twice the hole. (2) The edge of the hole can be used to strengthen the strength of the hole (3) The depth of the blind hole cannot exceed 4 times the diameter of the aperture (4) Screw holes should pay special attention to the strength of the hole and the size of the hole. If the hole diameter is too large, there will be slippage after the screw is inserted. If the hole diameter is too small, the screw or the screw column may not be inserted. (5) The column is too long (high) should pay attention to poor mold exhaust (6) The depth of the aperture is preferably not more than 8 times the aperture (7) Holes with steps, the cores are fixed on both sides of the fixed and movable molds, it is difficult to ensure the concentricity, and the burrs are easy to occur at the joint positions of the two cores, so the core of either side should be Increase by more than 0.5mm, guided by the other end 8. Inserts, rows, and slanting tops of the mold The inserts, rows and sloping tops of the mold are usually mounted on the moving mold of the mold. If the fitting is not tight, there will be burrs. UV+3000k+6500k+660nm Red+IR 730nm~Truly Full Spectrum Grow Lights. And the spectrum can be customized according to the growers plants type. 1000W LED Grow Light with high Purity 6063 Aluminum~Great Heat Dissipation~40% E-Power Bill Saved. No Noise Disturb Full Waterproof Grow Light. The Full Spectrum LED Grow Light spread out evenly for all directions+ Uniform Coverage+ Biggest Footprint+High Yield. MixLux Grow System provides not only LED Grow Light for growers and farmers but also for local dealer, disrtibulter and agent. MixLux mainly do OEM and ODM. MixLux can provide you an optiomal LED Grow Lighting Solution with spectrum plan and lighting plan, using CalculuX&Dialux Full Spectrum Led Grow Light,Medical Grow Lights,Bar Grow Light,Led Grow Light 1000W Shenzhen MixLux Technology Co., Ltd , https://www.mixluxled.com
The boundary between the wall thickness and the wall is thin, avoiding excessive angles, and the thickness should be gradually reduced along the direction of plastic flow.