江苏春晨电缆有限公司：https://www.afzhan.com/st159127/
Mold design, mold design and mold design can be set, you can also design mold design mold. In order to verify the design of less times, the first general design of die design and die.
我们以65型挤出机机头来举例，已知机头装配尺寸，要求设计模芯、模套。
We have 65 type extruder head for example, known as the head assembly size, design requirements, die die sleeve.HR起重机手柄电缆
经测绘，得65型挤出机模头尺寸。
After surveying and mapping, have 65 type extruder die size.
1、先设计模套，根据模套拆装要求，其伸出模头的长度约10mm，则得到模套的总长10+20=30mm；
1, the first design of the module, according to the requirements of the module assembly, the length of the extension of the mold is about 10mm, then the total length of the module is 10+20=30mm;
2、确定模套内锥zui大外径=Φ25mm；HR起重机手柄电缆
2, determine the die casing diameter cone = phi 25mm;
3、根据要求，确定模套定径区直径ΦD；
3, according to the requirements, determine the die sizing area of diameter D;
4、取定径区长度=0.5D；
4, the length of the area to take the length of =0.5D;
5、计算模套内锥半角γ/2=ATAN（（25-D）/（2*（30-0.5D））*180/PI()；绘制模套的草图（见图10）；
5, the calculation in the die sleeve cone semiangle gamma (/2=ATAN (25-D) / (2* (30-0.5D)) (*180/PI); drawing die sketch (see Figure 10);
6、因采用挤压式，模芯与模套的模间距L=2δ厚度；
6, because of the extrusion, the die core and the die sleeve die spacing L=2 8 thickness;
7、选模头右边平面为基准面A，模芯口至基准面A的距离=10-2δ厚度；
7, choose right die plane as the datum of A, distance =10-2 delta thickness core mouth to datum A;
8、为模芯拆卸方便以及模芯强度，选模芯伸出模头左边约10mm，则可以得到模芯总长=10+（10-2δ厚度）+65；
8, as the core and the core strength of convenient disassembly, selection of core die out of the left about 10mm, then we can get the core length =10+ (10-2 8 thickness) +65;
9、绘制模芯草图（如图）；
9, drawing sketches of core (Figure);
10、为便于调节偏芯，模芯螺纹长度一般取8～10mm，即b=8mm；
10, in order to adjust the eccentric core, core thread length is 8 ~ 10mm, b=8mm;
11、根据模头尺寸结构，取d4=18mm；
11, according to the size of the die structure, take d4=18mm;
12、根据第8条，我们知道模芯伸出模头左侧10mm，则a+b=27+10=37mm，a=37-b=37-8=31mm；
12, according to Article eighth, we know that the core extends out of the mold head on the left side 10mm, a+b=27+10=37mm, a=37-b=37-8=31mm;
13、为保证调偏螺钉能正面受力在模芯上，一般c取12～15mm，即c=15mm；
13, in order to ensure the adjusting screws can be positive force in the core, the general C from 12 to 15mm, c=15mm;
14、根据线芯大小，我们确定模芯定径区直径d1=d线芯+（0.2～0.5） mm，取d1=d线芯+0.2 mm，那么模芯外锥zui小外径d2=d1+0.5*2=d线芯+1.2 mm；
14, according to the core size, we determine the core sizing area of d1=d diameter wire core + (0.2 ~ 0.5) mm, d1=d +0.2 mm core, then the core outer cone diameter d2=d1+0.5*2=d wire core +1.2 mm;
15、那么根据以上数据，我们可以得出模芯外锥部分的长度=L-a-b-c=10+（10-2δ厚度）+65-31-8-15=31-2δ厚度 mm；
15, then according to the data above, we can draw the core part of the outer cone length =L-a-b-c=10+ (10-2 Delta +65-31-8-15=31-2 delta mm thickness) thickness;
16、根据锥角计算公式，求的模芯外锥角β= ATAN（（18- d线芯+1.2）/（2*（31-2δ厚度））*180/PI()
16, according to the calculation formula of cone angle, cone angle and outer core (beta = ATAN (18- D core +1.2 (2*) / (31-2) *180/PI (delta thickness))
17、将计算出模芯的锥角β与计算的模套外锥角γ比较，看看其差值是不是符合我们设计要求，若在设计范围内，设计成功，绘制零件图；若有出入，再次循环以上内容，直至符合设计要求为止，但必须保证在满足角度的前提下，还必须满足装配上的要求。
17, will be calculated through the core die cone angle calculated by the cone angle beta and gamma, see the difference is not consistent with our design requirements, if in the scope of design, design, drawing; if there is a discrepancy, again above, until it meets the design requirement, but must ensure that the premise meet the angle, must also meet the requirements of assembly.
以上，我们是用zui简单的65型挤出机模具设计来举的一个例子，实际中比以上设计要复杂多，但万变不离其中，请大家在设计时，必须根据机头的装配图及零件图的尺寸来合理设计。具体步骤大致如下：
The above is an example, we design 65 type extruder die for the most simple and practical than the above design is more complex, but deviate from them, please in the design, according to the assembly drawing and parts drawing die size design. The specific steps are as follows:
1、根据机头的零件图设计模套：
1, according to the head of the parts drawing design:
1.1 先根据给定一个角度以及模套不要伸出机头太长的原则，将模套的总长确定；
1.1 according to a given point of view as well as the die sets do not extend the principle of the head is too long, the length of the mold will be determined;
1.2 根据机头零件图，确定模套装配尺寸，包括模套内锥zui大外径、模套外径等尺寸；
1.2 according to the head parts drawing, determine the size of the die sleeve assembly, including the maximum diameter of the cone inside the mold, die sleeve diameter and other dimensions;
1.3 根据产品工艺要求，暂现确定模套孔径及定径区长度；
1.3 according to the technical requirements of the product, the length of the die sleeve diameter and the diameter of the die set is determined;
1.4 根据确定好的模套各数据，计算出模套的内锥角。
1.4 calculate the inner cone angle of the die sleeve according to the data of the set of good modules.
2、根据机头装配图、模芯座零件图以及设计好的模套，来设计模芯：
2, according to the head assembly, a core part drawings and design model, to design the mould core:
2.1 首先确定挤出类型：挤压式、挤管式、半挤管式，确定好模芯与模套的距离；
2.1 types: first determine the extrusion extrusion, tube extruding, semi tube extruding, determine the die core and the die sleeve distance;
2.2 在机头装配图中，选择一个基准面，以基准面来计算相关长度；
2.2 in the head assembly drawing, select a datum plane to calculate the correlation length;
2.3 得到模芯的长度后，根据模芯座的结构尺寸确定模芯装配尺寸；
2.3 get the core length, core assembly size is determined according to the structure size of the mold core seat;
2.4 根据线芯规格确定模芯孔径以及模芯外锥zui小外径等尺寸； 2.5 根据获得的模芯的相关数据计算处模芯外锥锥角，并验证与模套的角度差是否符合设计要求；
According to the 2.4 core specifications to determine the core diameter and core diameter of the outer cone minimum size; 2.5 according to the relevant data obtained at the core computing core outer cone angle, and to verify and die angle difference with the design requirements;
3、根据模芯、模套的相关尺寸绘制零件图，加工使用验证。
3, according to the relevant dimensions of mould core, die drawing, process validation.
3.6 下面，我们再简单介绍挤出机螺杆的压力及出胶量等方面的知识，供大家参考：
3.6 below, we will simply introduce the extruder screw pressure and the amount of plastic and other aspects of knowledge, for your reference:
3.6.1普通挤出机用等距不等深螺杆（渐变型螺杆）的出胶量计算公式：
Formula for calculating the volume of the out of the 3.6.1 ordinary extruder with equal distance and deep screw:
Q= (u×b×h1×h2) /( h1+h2) –(b×g×p×h12×h22)/( b×η×L×（h1+h2）)
Q= (U * b * H1 * H2) / (h1+h2) - (b * g * p * H12 * H22) / (b * n * L * (h1+h2))
其中：Q：挤出量 cm3/min
Among them: Q: extrusion cm3/min
u：螺杆在推进方向的速度（即螺杆转速）cm/min
U: the screw in the direction of the speed (that is, the screw speed) cm/min
b：螺槽的宽度（法向）cm
B: the width of the spiral groove (normal) cm
h1：填实点螺杆深度（进料口螺杆深度）cm
H1: filling screw depth (feed screw depth) cm
h2：端部螺杆深度（出料口螺杆深度）cm
H2: end of the screw depth (outlet screw depth) cm
g：重力加速度 cm/min
G: acceleration of gravity cm/min
η：塑料的粘度 kg/cm•min
ETA: plastic viscosity of kg/cm - min
p：挤出压力 kg/cm2
P: extrusion pressure kg/cm2
L：从填实点到端部螺纹展开长度（螺纹旋合长度）cm
L: from the point to the filled end screw expansion length (screw length) cm
从上式中，我们可以发现：
From the above formula, we can find:
1、挤出压力越大，挤出量就越小；
1, the greater the pressure, the smaller the amount of extrusion;
2、螺槽深度越浅，挤出量越稳定；
2, the depth of the spiral groove is shallow, the extrusion quantity is more stable;
3、螺槽宽度越大，挤出量越大，但宽度加大会使得螺纹宽度减小或塑化路径缩短；
3, the width of the spiral groove is bigger, the extrusion quantity is bigger, but the width increases the assembly to make the thread width decreases or the reduction of the length of the plastic;
4、螺纹深度要适当控制，螺纹深度越浅，则螺槽容积减小，挤出量减小，故太浅不行，但也不宜太深，太深则形成挤出量不稳定；
4, the depth of the thread should be properly controlled, the depth of the thread is shallow, the spiral groove volume decreases, the extrusion volume decreases, so it is too shallow, but it should not be too deep, too deep, the formation of extrusion is not stable;
3.6.2塑料在螺杆中呈螺旋运动，螺杆旋转产生剪切力，产生的剪切力将塑料剪切塑化，不同的材料需要不同的剪切力，才能达到理想的塑化
3.6.2 plastic in the screw in a spiral movement, the rotation of the screw to produce shear force, the shear force will be plastic shear plastic, different materials need different shear force, in order to achieve the ideal plastic
