The hottest Italian co injection molding equipment

Italian co injection molding equipment has its own characteristics

electrical plugs of various types and shapes, especially shuko plugs, are one of the most common applications of plastics in the electrical industry. At the same time, these products need to be produced with advanced production technology based on a wide range of professional technology. These plugs are produced by CO injection molding thermoplastic materials into pre processed corrugated inserts (which can be equipped with cables) using a vertical injection molding machine

according to the production volume and the degree of specialization of products, manufacturers can choose fully automated or partially automated production processes

the main advantages of fully automatic process are high production efficiency, but its disadvantages are high investment cost and it is difficult to adopt some customized solutions. Therefore, the plug is generally produced by partially automated process, so that the process can be modified as needed at a lower cost while achieving higher productivity

however, the adoption of partially automated production processes requires good organization and "intelligent" machines to reduce the scrap rate, improve production efficiency and increase output with the best process, so as to enhance the competitiveness of products. In order to shorten the production time of electrical plugs, OMF turra can provide a vertical injection molding machine equipped with a linear workbench, which can optimize the manual loading process of CO injection molding inserts. The operator can remove the semi-finished products from the workbench and install the inserts to be injected with cables during the injection molding process of the second lower half mold loaded in front. In this way, the loading and unloading operations are carried out simultaneously with the previous half mold injection molding and cooling processes, eliminating the waiting time of operators, thereby improving efficiency

with this production process, 500 to 600 plugs can be produced per hour depending on the proficiency of the operators in unloading the finished products and loading the inserts

omf turra has developed two types of Pascal injection molding machines for this application field. Ftv 600/145 is equipped with 6-cavity mold, which has the advantage of low initial investment. The other model is equipped with ft9 unit and 8-cavity mold. Due to the long cooling time in the mold, the product quality is good, and the output per hour is also high

it should be emphasized that, as mentioned above, using an external workbench can shorten the processing cycle time, because inserting inserts in the injection molding process can increase the productivity by up to 50%

bx Stratos injection molding machine developed by oima company can accurately produce industrial parts

this model can be configured with 2 or 3 independent plasticizing units. The location and number of injection unit groups depend on the machine, the products produced and the type of mold technology used. The injection molding system includes the first (a) and second (b) plasticizing units, and the third horizontal injection molding unit (c) can be selected. The unit can be installed on the side of the operator and is perpendicular to the machine axis

the clamping mechanism can be elbow bar structure or hydraulic type, and a rotating workbench can be equipped on the moving template to rotate the mold by 180 ° at most. When using molds without rotating mechanism, the machine is expected to double again in the next 20 years, especially suitable for multi-color or multi-material injection molding. 4. New breakthroughs have been made in the innovation platform.

the BX Stratos injection molding machine developed by oima company can accurately produce industrial parts.

during single material injection molding, the plasticizing units a and B can work independently or at the same time. When carrying out two-color or two-material injection molding, the two units can also work in sequence or at the same time with or without a rotating table. Units a and C can also work in sequence or at the same time to carry out two-color or two-material injection molding. At the same time, other mechanisms can also work in sequence or at the same time to carry out multi-color or/and multi-material injection molding with or without rotating table

in Stratos BX injection molding machine equipped with valve release and convergence A and B units (optional C unit), a and B units can be combined with an injection molding machine head equipped with programmed hydraulic nozzle. The machine head is designed for CO injection molding, and its flow can be adjusted separately

a and B units can also be co injected with C unit in sequence or at the same time, and the rotary table can be used or not. The co injection molding machine head can also be used in injection molding machines with units a and B installed in parallel and side by side. Finally, the models equipped with a and C units do not need B unit, which can be injected with single material by a unit, or two-color or two-material injection by a and C units in sequence or at the same time

another interesting solution is the injection molding machine developed by presma. It adopts the design of all electric roto t2/48 e rotary injection molding machine, which is used to make bottle closures from thermoplastic foam

the main feature of this model is that it is electrically driven, even the movement of the storage plunger and the plasticizing screw is also electrically driven. In one production cycle, the injection molding machine can produce two different types of corks at the same time: cylindrical and/or T-shaped corks produced from 2-color or multi-color mixtures

its cycle time is between 1.8 - 2.2 s, and 3000 to 4000 injection molded parts can be produced per hour. The machine is equipped with an automatic device for producing two-color bottle stoppers, which can transfer the first color in one mold cavity to the next mold cavity, and install wooden or plastic plug-ins to produce T-shaped bottle stoppers with hard heads

finally, special attention should be paid to the need to equip the co injection molding machine with appropriate molds, manipulators and controllers

in order to shorten the injection time, another injection cylinder (90 ° or V-shaped configuration) needs to be equipped on the injection molding machine, which can be used for double material injection molding. By rotating the whole mold, the mold cavity can be transferred from the first injection station to the second injection station. When the rotary workbench is not used, the same effect can be achieved by rotating the mold, that is, controlling the rotation of a single half mold and transferring the mold cavity from the first injection station to the second injection station

in order to make the two injection molding units run automatically when producing complete parts, and to evaluate the results of the rotary assisted (rotary workbench or half mold rotation) dual material injection molding process, the manufacturing of such molds has high requirements for professional technology and operation skills. However, the production flexibility can be greatly improved by using robots

this solution not only greatly simplifies the movement of the mold, but also overcomes the limitation of the rotation of the mold cavity, so that a second material can be added to one side of the mold cavity. In this field, campetella robot center is currently selling robots that can shorten the operation time of injection molding machines. The glass curtain wall engineering technical specification JGJ 102 ⑵ 003 provides special grippers that can pick up molded parts, rotate them as needed, and then insert them into the second injection molding area. The manipulator can rotate the wrist, take the molded parts out of the movable half mold, and then put them on the fixed half mold. The gripper can complete various operation processes

Claudio celata is the publisher of macplas magazine and the general manager of ASSOCOMAPLAST. (end)