How can we order a good plastic chair mould?

To order high-quality chair mould, we have to be very careful to choose the mould company. If you want to know their quality of chairs mould, ask a few questions: Chair mould quality points: . Chair mould cycle . Chair mould life . Is parting line good? . Are there sharp edges? . Is the

What should I do if injection molded parts crack?

Recently, phenomenon of product breakage has caused batch returns and caused great losses. In order to solve this problem, relevant information sharing here.Residual stress is too high. When residual stress in plastic part is higher than elastic limit of resin, cracks and ruptures will occur on the surface of plastic part. During injection molding, molecular arrangement

Design of Injection Mold for Eccentric Alignment

Abstract: According to demand plan of window products, matching injection molding technology was selected, focusing on demolding system, support structure, etc., to cleverly solve problem of deviation between injection center and geometric center of mold, realize smooth implementation of injection mold design. 1 Product process analysis Window products need to be completely transparent, have certain

What problems should be paid attention to when using thimble oil?

During injection molding process of thimble, thimble and thimble hole rub against each other. If thimble oil is not frequently applied to thimble (or thimble hole), thimble will burn out or wear, thimble hole will wear out and become larger. Thimble position of product is prone to flare, which affects product quality (or assembly). Sometimes thimble position

Structural Design Analysis of Injection Molded Shells for Home Appliance

With continuous development of science and technology in my country, in information age, home appliances have become more diversified, at the same time, they are developing towards integration, miniaturization, and intelligence. In context of home appliance market becoming more mature and over-performance, consumers have not only paid attention to performance of home appliances, but also

Design of Injection Mould for Green Single Door Refrigerator Drawer and U-shaped door frame cover

Design of Injection Mould for Green Single Door Refrigerator Drawer Green single-door refrigerator drawer product diagram is shown in Figure 1. Maximum dimensions of product are 492.40 mm * 284.95 mm * 194.42 mm, average thickness of plastic part is 2.50 mm, plastic part material is PP+%25K, shrinkage rate is 1.009, weight of plastic part is 885 grams. Technical

Design of Injection Molding Device for Local Thin-walled Products

At present, plastics industry has achieved rapid development in China, plastic molding technology is developing in direction of “precision, thinness, lightness and smallness”. Cost of plastic usually accounts for a larger proportion of cost of product, and thinning of product can help reduce ratio. Due to miniaturization and portability of consumer electronic devices such as mobile

Nine most common failures of injection molds

1 Difficulty in gate discharge During injection molding process, gate is stuck in gate sleeve and is not easy to come off. When mold is opened, crack damage occurs. In addition, operator must knock out nozzle with tip of a copper rod to loosen it before demoulding, which seriously affects production efficiency. Main cause of failure

Design of Injection Mold for Toy Car Tires Based on Pneumatics

Air valve structure used in traditional pneumatic ejection plastic parts is a cone-shaped valve of 60° to 120°. Process of ejecting plastic part by injection mold is: after mold is opened, air valve is opened, compressed air pushes valve open, and at the same time spring is compressed , high-pressure air enters gap between core

Design points for pushing out large injection molds

For plastic parts that do not allow traces of push rods on the surface of plastic parts, such as large transparent plastic parts, plastic parts such as printer covers and other plastic parts with front and back surfaces can be pushed out at the edges of plastic parts. The other type is box-type plastic parts,