1. Basic Principles of Two-color Module Design:
(1) Hard glue once and soft glue twice;
(2) transparent once and opaque twice;
(3) The plastics with high forming temperature are made once and the plastics with low forming temperature are made twice.
Above is the basic principle of making two-color die, otherwise the die will be made in vain; in addition, when sealing glue, try to rely on the breaking glue, rather than inserting the breaking glue, even if it is suggested that customers modify the product must rely on the breaking glue as far as possible;

2. Mould embryo guide sleeve must be symmetrical from top to bottom, from left to right, and from front to back.

3. The rear die should rotate 180 degrees and the front die should not move.

4. The distance between products must be based on the distance between the nozzles of injection moulding machines. The distance between the nozzles of some two-color injection moulding machines abroad is adjustable, some are not adjustable, and the distance between the nozzles of domestic ones is not adjustable.

5. Two separate ejection systems and two ejector sticks. The two products of the rear die are the same, and the thimble is the same. It is a rotational relationship. It must not be made into a translation relationship.

6. The ejector plate can only be reset by spring, not by screw, because the rear die has to rotate.

NINGBO HAIJIANG MACHINERY MANUFACTURING CO.,LTD., situated in Ningbo Yinzhou Investment & Innovation Center, coversa land of more than 50,000M2.It was established in 1992 and now employs a staff of more than 500 people. with CE and ISO9001

Haijiang Company is a hihg-tech enterprise specialized in manufacturing injection molding machine that mainly covers dozens of speci?cations with injection shot of 45-2,0000g and mold clamping force of 400-15,000KN. Based on the marrow of the trade gained and through years' accumulation, the company has made constant innovation to ensure the machine quality.Parts built into the machines of defferent mold locking forces are all processed under specialized management. HJF series injection molding machines are developed by Haijiang Company on the basis of a collection of the advantages assimilated from all world famous brand machines with optimized design realized by CAD/CAM/CAPP where technical problems such as noise of the entire machine and low energy dissipation are removed and thus the design quality of products is secured. The company adopts advanced equipment and technology and applies scientific management. Besides, it has introduced high-precision full automatic CNC machines fitted with imported electric and hydraulic parts, which have tremendously improved the accuracy and steadiness of the whole machine. Its present products such as HJK and KJF series and widely applied in the electronic, automobile and civil industries.
In order to participate in competition in the world market,the company has clustered a group of high quality technical and managerial personnel with innovative spirit by means of optimized combination fo personnel. The company faces the society and users by acting on the principle of pursuit for ?rst class and sincere service. We will appreciate friends from all circles who have given their concern and support to Haijiang machines with first class products and first class after service.