This unit uses dual extruders and dual tractors to compound multiple substrates by casting, and complete the bright compounding process of the front and back of the plastic woven bag in one production process. The unit has high degree of automation, advanced technology and convenient operation. The whole machine adopts PLC operating system, linkage control, automatic temperature control of each extruder, automatic suction, and the composite product has strong adhesion fastness, good effect, uniform thickness and good sealing performance.
The cement bag perforating needle rollers and woven bag perforating needle rollers developed by our company adopt imported alloy steel wire needles with high strength and good abrasion resistance. With advanced drilling technology, the processing precision reaches the same level in the world.
non-woven needle roller,Automatic punching machine equipment, woven bag double-sided punching machine, cement bag punching needle roller, woven bag punching needle roller, Cement bag woven bag ultra-micro hole punching machine Changzhou Puyisen Machinery Technology Co., Ltd. , https://www.pysmachine.com
The idle gear is a key component on the Yellow River-Kawasaki 250 motorcycle. Its material is 20CrMo. The shape and size are as follows. The part has three internal teeth evenly distributed on the inner wall. The tooth length is 20mm, the tooth thickness is 5mm, and the tooth width is 9.5mm. Conventional machining methods produce not only low material utilization rate, but also time-consuming and labor-intensive. Therefore, the extrusion technology is used to make the difficult-to-machine internal tooth part extrusion forming to meet the drawing design requirements, which is an inevitable trend of its production development.
1 Structural process analysis The part is atypical hollow part, the structure is symmetrical and simple. It is suitable for the cold extrusion forming process. The extrusion only requires the coaxiality of O57 to O43 to be less than 0.35mm. The remaining dimensional tolerances are free tolerances and roughness requirements. In general, the cold extrusion process can fully meet the various precision requirements. The extrusion part designed according to the cold extrusion process is as shown in the figure. The forming volume is calculated as the extrusion volume V= 37457.52mm3. The blank diameter is 57-0.1mm, then the blank height should be For the 14. 7mm, the axial margin can be increased by 2~3mm, and the height of the blank is 18mm. According to the inverse extrusion force diagram algorithm, the unit extrusion force can be calculated as 1800MPa. The total extrusion 2 mold structure can be seen from the product parts drawing. The precision of the pressing parts is not very high. There is a certain machining allowance on the upper and lower end faces and the outer circle, and there are also processing requirements on the concentric circles of the claws. Therefore, we use a universal black metal extrusion molding frame.
The working part of the mold for cold extrusion process should have sufficient strength and rigidity. The easy-to-wear part should be easy to assemble and disassemble for easy replacement. In addition, there should be good guiding. On this basis, the mold structure should be as simple as possible, easy to manufacture, and cost. low.
The mold structure diagram we used is as shown in the punch 3 and the punch sleeve 2 with interference fit, relying on the mold structure to calculate the interference to maintain the punch positioning 1-bearing pad; 2 punch sleeve; 3 convex When assembling the die punch, firstly, the punch sleeve 4 and the die die; 5 top piece; the 6-pole seat is heated to about 300 ° C, and then the punch is pressed into the punch sleeve. When the combined die 4 is assembled and debugged by a typical three-layer prestressed structure mold, in order to ensure that the punch and the die are concentric, a concentric sleeve of the car should be positioned between the punch and the die. In operation, the punch is descended to the male die sleeve 2 to contact the combined die 4 to complete the axial positioning.
3 Process and its effect The process flow of the idle gear is as follows: preparation material - softening heat treatment + blanking of the blank car - phosphating saponification + cold extrusion forming - stress relief tempering - machining with cold extrusion process to produce large idle gear Mass production inspection proves: the product size is stable, the surface is smooth; the mold structure is simple, the manufacturing precision is easy to guarantee: 2000-08-15 pressure
The base material of this series of needle rollers generally adopts hard aluminum alloy and copper alloy, which has the characteristics of good quality, low price, economical and practical.
Our company specializes in the supply of woven bag needle rollers, cement bag needle rollers, and woven bag needle rollers wholesale. The product quality and processing technology reliability and stability are at the domestic advanced level. We can produce various special specifications of needle rollers according to customer requirements. Needle ring products. Customers are welcome to consult.