Presentation: report design and manufacture of plastic injection molds

Presentations report design and manufacture of plastic injection molds was conducted with the following contents: The thickness of the product, the relevant defects, warping, how to fix, corner boards, tendons, tendon increases hard, protruding lug, lug sticking design, holes in the product, ... Invite you to consult the documentation.

REPORT   DESIGN AND  MANUFACTURING PLASTIC  MOULD Click icon to add picture Click icon to add picture CONTENT NOTICES about THE SHAPE  oF  PRODUCT DESIGN PRODUCTS  FOR INJECTION INJECTION MOLD Content  The shape of the product The thickness of the  product circle Corner nerve  Lugs protruding? hole  on product? Corner exit  mold? thread on  products The thickness of the product Nên thiết kế thành mỏng, tạo nhiều gân tăng độ cứng Figure 1.1 The transition from part design The related disability Hìn 1.2 Common disabilities when designing the thickness mismatch warping Fg 1.4 warping the uneven thickness Remedy  Figure 1.5 Comparison To correct the warping, the need to design a uniform thickness, the following is some way designed to make uniform thickness: circle Corner  By about 25­60% boron corner thickness, 50% is the best Outer radius radius should equal the thickness  of the product plus: R = r+ T circle Corner  Figure 2.2 Dimensions Design bo corner floors Defects involving round corner  Vấu lồi The thickness is less than 75% lugs protruding put the lug thickness Outer radius equal to 25% transition should put the paw thickness or by 0.04mm to reduce stress DESIGN • The taper angle of 0.5 degrees in  addition to the minimum and  should taper in the smallest 0.25 degrees • The lugs protruding far into the  product put up extra hard team  tendon increase firmly DESIGN SIZES 5. hole on products • hole depth does not exceed 3 times the diameter of the hole (hole not  informed) • Lengths of holes evenly, without the sharp corner • Two hole distance or distance than the outer edge of the  hole should equal twice the thickness or twice size measure the circumference most hole (hole smoothly) 6. DRAFT ANGLE • Products with ribs, lugs protruding, deep  groove   or beveled surface, you should design towards open mold taper angle • We can rely on to design the diagram below  for proper taper angle • The value depends on the angle shoulder of plastic shrinkage and  height Slovak • Structural molds suitable for easy product 7 Products with thread Lace and lace foot radius should be greater  focus to avoid application productivity The last paragraph should be rounded to avoid  flush lace lace and lace damaged Avoid designing steps lace