推杆脱模机构是最简单、最常用的一种形式，具有制造简单、更换方便、推出效

推杆脱模机构是最简单、最常用的一种形式，具有制造简单、更换方便、推出效果好等特点。推杆直接与塑件接触，开模后将塑件推出。
推杆的截面形状；可分为圆形，方形或椭圆形等其它形状，根据塑件的推出部位而定，最常用的截面形状为圆形；推杆又分为普通推杆和成型推杆两种，前者只是起到将塑件推出的作用，后者不仅如此还能参与局部成型，所以，推杆的使用是非常灵活的。
（1）推杆尺寸计算：本设计采用的是推杆推出，在求出脱模力的前提下可以对推杆做出初步的直径预算并进行强度校核。本设计采用的是方形推杆，并在制件的三个凸爪处设置的固方形推杆的尺寸即为动模凹模尺寸。
（2）推杆的固定形式：推杆的固定形式有多种，但最常用的是推杆在固定板中的形式，此外还有螺钉紧固等形式。
（3）推出机构的导向：当推杆较细或推杆数量较多时，为了防止因塑件反阻力不均匀而导致推杆固定板扭曲或倾斜折断推杆或发生运动卡滞现象，需要在推出机构中设置导向零件，一般称为推板导柱。
（4）推出机构的复位：脱模机构完成塑件的顶出后，为进行下一个循环必须回复到初始位置，目前常用的复位形式主要有复位杆复位和弹簧复位。本设计采用弹簧复位机构，弹簧复位机构是一种最简单的复位方式。推出时弹簧被压缩，而合模时弹簧的回力就将推出机构复位。
（5）推杆与模体的配合：推杆和模体的配合性质一般为H8/f7或H7/f7，配合 间隙值以熔料不溢料为标准。配合长度一般为直径的1.5～2倍，至少大于10mm，推杆与推杆固定板的孔之间留有足够的间隙，推杆相对于固定板是浮动的，如图3-7所示。

結果 (中文) 3:

Push rod ejection mechanism is the simplest and most commonly used form, which has the characteristics of simple manufacture, convenient replacement, good effect and so on. Push direct contact with plastic parts, mold plastic parts will launch.The shape of the cross section of the pushing rod; can be divided into round, square or oval shapes, according to the plastic parts to launch site, the shape of a cross section of the most commonly used round; push rod is divided for ordinary putter and forming putting two, the former is plastic parts will launch the role, which not only that but also participate in local forming, so use of a push is very flexible.(1) push rod size calculation, this design uses is the putter launched, in the premise of unwinding the clamping force can be on the push rod to make preliminary diameter budget and strength check. This design adopts the square push rod, and the size of the solid square push rod which is arranged in the three part of the workpiece is the size of the moving die.(2) the fixed form of the push rod: the fixed form of the push rod is various, but the most commonly used is the push rod in the form of the fixed plate, in addition to the form of screw fastening, etc..(3) the agency launched the orientation: when the push rod is fine or putting a large number, in order to prevent plastic anti resistance is not uniform and lead to push rod fixed in twisted or inclined broken rod or motion card lag phenomenon, need in the launch of the mechanism is provided with a guide part, commonly known to push plate guide pillar.(4) the introduction of the mechanism of the reset: release mechanism to complete the top of the plastic parts for the next cycle must be returned to the initial position, the current commonly used in the form of reset and reset the main reset. This design adopts the spring return mechanism, the spring return mechanism is one of the most simple way to reset. The launch of the spring is compressed, and the clamping spring back force will launch reset mechanism.(5) the fit between the push rod and the die body: the matching property of the push rod and the mould body is generally H8/f7 or H7/f7, and the gap value is matched with the gap value. The length is generally 1.5 to 2 times the diameter, at least more than 10mm, the push rod and the push rod fixed plate between the holes left enough gap, push rod relative to the fixed plate is floating, as shown in figure 3-7.