What is the main structure of the double row iron core progressive die

With the continuous development of industrial product technology, the market demand for precision progressive dies is increasing, and the technical requirements are becoming increasingly strict. For example, with the integration of mechanical and electrical technology as the representative of the automatic sheet carbide progressive die for motor iron cores, more and more manufacturers use this type of die to produce iron cores. Moreover, with the development of high productivity, the demand for double-row iron core molds and large-size iron core molds continues to increase, and the molds are also enlarged, and the accuracy requirements and manufacturing difficulties are correspondingly 'increasing.' In view of this, in order to accelerate the development of double-row iron core progressive die and the improvement of the level of domestic molds, the following will focus on the main structure of this type of mold, precision manufacturing technology, key technical parameters of the main parts, and mold use and maintenance requirements . The main structure of the double-row iron core progressive die mold ①The mold base adopts a precision ball guide double guide structure, the upper and lower mold bases are guided by 4 sets of large ball guide pillars, and the split unloading plate and upper and lower mold bases use 8 sets of small ball guides. Guide pillar guide.　　②Elastic unloading plate 　　 adopts a block-type combination structure. The main body of the unloading plate is divided into 2 pieces and 5 guide plates, and 8 groups of small ball guide posts are connected with the upper and lower mold bases to form an integrated guide combined form. The spring-loaded unloading plate and the guide plate have a block-combined structure, which has the comprehensive performance of unloading, pressing, protecting the punch, controlling the step distance and precise guidance.　　③Concave mold　　 adopts a block-type inlay structure, consisting of cemented carbide inserts and 5 concave plates. The method of cold pressing and precise positioning ensures that the parts can be interchanged.　　④Punch fixing 　　 adopts a quick-change structure, and the cemented carbide punch and the fixed plate adopt a μm-level clearance fit and are locked and positioned with a pressure plate. The position accuracy of the punch is controlled by the guide plate.　　⑤Step accuracy control structure　　Using two rows of 28 guide pins to control the high-precision positioning of the feeding step, the step accuracy is guaranteed by the precise guide plate.　　⑥Strip guide 　　Strip guide adopts the side guide plate guide structure, and the side guide plate is set in the form of block and section. And set up the material ejecting structure on the fixed plate of the concave mold to ensure the unimpeded operation of the strip.　　⑦Mold safety protection mechanism 　　The upper and lower mold bases adopt 4 groups of limit posts in the relative position to control the mold stroke. Multiple and segmented limit blocks are set between the upper template and the discharge plate to control the optimal stroke of the upper mold during punching and the balanced support of the elastic pressure discharge plate. A micro-switch anti-misfeeding device is installed, and the punching machine can be stopped immediately when the strip is misfeeding failure to avoid damage to the mold. ⑧The thickness of the iron core is grouped by a plate drawing mechanism. The required number of pieces is set in the punch control cabinet. When the set number of pieces is punched, the mold is controlled by the cylinder and solenoid valve under the pulse instruction of the electrical control cabinet. The upper plate drawing mechanism moves, and the metering punch is pushed out and reset immediately after punching, to reach the thickness of the iron chip and grouping requirements.