32results about How to "Eliminate weld lines" patented technology

The invention relates to a dish type pouring device for a hot runner of a large PVC (polyvinyl chloride) plastic pipe injection mold. The device comprises a fixed mold plate, a movable mold plate, a mold core provided with a groove in the upper end surface, as well as a hot runner system, wherein the hot runner system comprises a main runner sleeve as well as an upper dish-shaped sub-runner plate and a low dish-shaped sub-runner plate which are located in the groove; at least five mold core sprue holes communicated with a mold cavity are uniformly distributed in the wall of the groove in the circumferential direction, a sub-runner plate runner is formed between the lower end surface of the upper runner plate and the upper end surface of the lower runner plate, sub-runner plate sprue holes are formed between the upper sub-runner plate and the lower sub-runner plate and along the circumferential flanges, the main runner hole is communicated with an upper runner plate through hole, sub-runner plate runners, sub-runner plate sprue holes and the mold core sprue holes, heaters are arranged in the flanges of the upper sub-runner plate and the lower sub-runner plate, and radiators are arranged above and below the mold core sprue holes. The pouring system doesn't have condensate waste, flowing of plastic melt in the runners is facilitated, weld bond can be avoided or reduced, the cost is saved, the production efficiency is high, and the quality of a finished product is good.

The invention discloses a small plastic part laser melting extrusion molding method and an apparatus thereof, relates to the high-precision small plastic part molding processing field, and especially relates to an infrared laser melting and die extrusion molding based small plastic part molding method and an apparatus thereof. Traditional high-precision small plastic parts have the disadvantages of high injection molding processing cost, difficult control of the quality of the an injection part, and severe wastes of plastic raw materials and energy. In the invention, infrared laser rapid heating melting and molding die extrusion molding processing technologies are adopted for the high-precision thermoplastic small plastic part. The small plastic part laser melting extrusion molding method and the apparatus thereof have the advantages of high molding precision, good molding quality, high efficiency and low cost, are suitable for the batch automatic molding processing of high-precision small plastic parts, and have high application values.

The invention provides a molding method for the panel of an injection molded part. The method comprises the following steps: (1) allowing high-pressure water to flow into a die before injection so as to enable the temperature of the die to exceed viscous flow temperature for thermal deformation of resin; (2) injecting molten resin into the die; and (3) allowing the temperature of the die to rapidly drop to a temperature below thermal deformation temperature of the resin by using cooling water. The invention also provides an air-conditioner display apparatus which comprises a light source, a display box, an injection molded part and a pattern mask, wherein the injection molded part is molded and manufactured by using the molding method for the panel of an injection molded part, and the pattern mask is arranged at the front surface of the display box. The molding method provided in the invention overcomes the problems of warping, bogging-down and the like of an injection molded part and enables weld lines to be eliminated and glossiness of products to be improved. The air-conditioner display apparatus provided in the invention utilizes a highlighting LED display lamp to irradiate an area having a display pattern, which enables display icons to directly permeate the panel of the injection molded part and no display decorating parts to be needed.

The invention discloses an injection mold structure for high-gloss traceless automotive plastic products, which includes a bottom plate, the upper end of the bottom plate is symmetrically fixedly connected with two vertically arranged brackets, and the top ends of the two brackets are fixedly connected with a box body , a cavity is opened in the box. The present invention adopts the linkage design of the opening and closing of the upper mold and the box body. When the upper mold moves downward, the supporting block fixedly connected with it is driven by the ejector rod to move. After the supporting block moves, the connecting rod is driven to move according to the lever, and the connecting rod According to the movement of the lever, the baffle connected with it is driven to move upwards. At this time, the bellows is separated from the baffle, and the inlet pipe is connected to the steam output end of the external boiler. At this time, the steam enters the cavity, bellows, upper mold and lower mold. Complete a cycle and discharge from the exhaust pipe. Due to the cooling and heating effect of high-temperature steam, it can eliminate the welding marks on the injection mold, so that the injection molded product has a high-gloss and trace-free effect.

The invention relates to an ultrasonic vibration micro-foaming injection moulding device and an ultrasonic vibration micro-foaming injection moulding method for a plastic inspection well, and relates to the field of injection moulding machining for plastic inspection wells. The ultrasonic vibration micro-foaming injection moulding device comprises a fixed die plate, a movable die plate, a die core and hot runner system, an ultrasonic vibration device and a control system, wherein die cores comprise a main die core and a side pulling core, and a die cavity is arranged among the die cores, the fixed die plate and the movable die plate. According to the invention, a cavitation foaming effect of ultrasonic vibration on plastic is utilized, the die cavity is filled with a plastic melt through injection moulding to reach 85-90% of the volume of the die cavity at first, and then the plastic melt in the die cavity is subjected to overall ultrasonic vibration and cavitation micro-foaming through the main die core provided with an ultrasonic vibration mechanism, thus micro-foaming injection moulding machining for the plastic inspection well is realized. The ultrasonic vibration micro-foaming injection moulding device disclosed by the invention is simple to operate, high in moulding accuracy, and capable of saving plastic raw materials by 10-15%, reducing an injection moulding pressure by 60-80%, saving energy, avoiding or reducing generation of weld marks, enhancing the product strength and prolonging the service life.

The invention provides a method for manufacturing an escalator roller, which belongs to the technical field of escalator rollers and solves the problems that an escalator roller is manufactured by means of mounting a bearing injection molding wheel carrier and then forming an outer ring in an injection molding manner in the prior art, adhesion is unsatisfactory generally, or assembly efficiency is low, assembly difficulty is high and the like. The method for manufacturing the escalator roller includes the steps: A, forming an outer ring in an injection molding manner through an outer ring mould; and B, forming the roller by respectively placing a bearing and the outer ring into a wheel carrier cavity in a wheel carrier mould, performing injection molding in the wheel carrier cavity between the bearing and the outer ring and stripping the mould to obtain an escalator roller blank. By the aid of the method for manufacturing the escalator roller, components do not need to be assembled, firmness of adhesion of the wheel carrier and the outer ring is improved, reliability of matching of the bearing and the wheel carrier is enhanced, and production efficiency is improved.

The invention relates to a quick steam forming device for a decoration panel. The device comprises a plastic injection mold and a steam former device. The device is characterized in that a water access way is arranged on the plastic injection mold; the water access way is connected with the steam former device through a pipe; before the plastic injection, a high-temperature and high-pressure steam water mixer is blown in the plastic injection mold through the water access by the steam former device, so that the temperature of the plastic injection mold is quickly raised to reach above a high molecular material glass conversion temperature; a molten high molecular material is injected in the plastic injection mold for plastic injection; after the plastic injection is finished, high-pressure cooling water is input in the plastic injection mold through the water access way by the steam former device, so that the temperature of the plastic injection mold is quickly decreased above a high molecular material deformation temperature; and after the cooling is finished, a formed product is taken out. Compared with the prior art, the quick steam forming device for the decoration panel has such advantages as low cost, good stability and low energy consumption.

The invention relates to a polyolefin reinforced material and preparation method thereof. The polyolefin reinforced material comprises the following components in parts by weight: 50-90 parts of polyolefin resin, 10-50 parts of inorganic reinforcement, 1-3 parts of fusion welding modifying agent, 0.1-2 parts of lubricating agent and 0-2 parts of other auxiliaries. Compared with the prior art, the polyolefin reinforced material has the advantages that the fusion welding mark strength during injection molding is improved by more than 85% on the basis of retaining the excellent mechanical property, and no appearance weld mark can be seen on the injection molding product.

The invention relates to an imitation metal ABS modified material, and a metal imitation ABS modified material, which is composed of the following components and proportions: 70-95 parts of ABS, 0.5-10 parts of pigments, and a coupling lubricating compound modifier 1 ~5 parts, 5-10 parts of tackifier, 0-10 parts of filler, and 0.1-1 part of antioxidant, wherein, the coupling lubricating compound modifier has a brand name of YY-503, and its number-average molecular weight is 3000 ~5000, the low melting point of the coupling lubricating compound modifier is 75±5℃, and the high melting point is 150±10℃; the tackifier is C5 petroleum resin, and its average molecular weight is 1000~2500; the present invention can It overcomes the problems of serious weld lines, poor metal effect and reduced impact strength in the prior art, and has broad application prospects in the plastic product industry.

The invention discloses a device for regulating flow of a tube blank plastic suction mold forming runner. The device is characterized by comprising a tube blank plastic suction mold main body (1), wherein a hollow tubular main core shaft (2) is arranged in the tube blank plastic suction mold main body (1), a plastic suction tube (3) is arranged in the main core shaft (2), and the plastic suction tube (3) is connected to the main core shaft (2) in a sleeved mode, and is arranged coaxial with the main core shaft (2); the lower end of the main core shaft (2) protrudes out of the lower end surfaceof the tube blank plastic suction mold main body (1), an inner hollow forming mouth mold (4) is fixedly connected to the lower end of the tube blank plastic suction mold main body (1), the lower endof the main core shaft (2) is connected in the forming mouth mold (4) in a sleeved mode, and an interval is arranged between the outer surface of the lower section of the main core shaft (2) and the inner surface of the forming mouth mold (4) to form the lower runner; and a drainage ring (6) is connected to the middle section of the main core shaft (2) in a sleeving mode. The device for regulatingthe flow of the tube blank plastic suction mold molding runner has the advantages that the device can overcome the defects in the prior art, and the structural design is reasonable and novel.