装配模具时，要保证凹凸模之间有一定的间隙，间隙要对称，这样才能延长模具的使用寿命，保证零件的质量。其次模具注塑加工过程中会遇到咬模现象，两个问题要如何进行处理呢？

When assembling the mold, it is necessary to ensure that there is a certain gap between the concave convex mold and the gap should be symmetrical, so as to prolong the service life of the mold and ensure the quality of parts. Secondly, the mold biting phenomenon will be encountered in the process of mold injection molding. How to deal with the two problems?

模具注塑加工时的内部间隙处理

Treatment of internal clearance during mold injection processing

1、直接测量，用量具直接测量凹凸模之间的间隙。由于凹凸模之间结构复杂，量具只能用在单边间隙大于0.02mm的模具上。如果间隙太小，将难以测量。

1. Direct measurement: directly measure the gap between concave convex dies with measuring tools. Due to the complex structure between concave and convex dies, measuring tools can only be used on dies with unilateral clearance greater than 0.02mm. If the gap is too small, it will be difficult to measure.

2、作为垫片的参考测量，在凹凸模配合部分的间隙中插入厚度均匀的纸或金属片。以垫片的厚度为参考标准，保证凹凸模间隙均匀。

2. As the reference measurement of the gasket, insert paper or metal sheet with uniform thickness into the gap of the mating part of the concave convex die. The thickness of the gasket shall be taken as the reference standard to ensure uniform clearance of the concave convex die.

3、用透光法测量，用光照射凹凸模之间的配合间隙，通过透光间隙的大小来判断凹凸模间隙是否均匀。

3. Measure with light transmission method, irradiate the fitting gap between concave convex dies with light, and judge whether the gap between concave convex dies is uniform through the size of light transmission gap.

4、在凸模上涂一层油漆，厚度等于凸模与凸模之间的间隙，然后插入凸模。这种方法简单实用，适用于不能用垫片调整的模具。

4. Apply a coat of paint on the punch with a thickness equal to the gap between the punch and the punch, and then insert the punch. This method is simple and practical, and is suitable for dies that cannot be adjusted with gaskets.

5、镀铜法，在凸模工作端镀上一层铜层，厚度为凸模与凹模的配合间隙，然后插入凸模。这种方法类似于涂敷法，在模具使用过程中铜层会自动脱落。

5. Copper plating method: a layer of copper layer is plated on the working end of the punch, the thickness is the fit gap between the punch and the die, and then the punch is inserted. This method is similar to the coating method. The copper layer will fall off automatically during the use of the mold.

模具注塑加工时的咬模现象处理

Treatment of die biting during injection molding

模具注塑加工中的咬模可分为这几种。上下模板、固定板和凸凹模的组装不平行。冲裁间隙不均匀。冲头固定不符合设计要求。重复冲孔或叠冲孔，即对一个毛坯进行两次冲孔或将几个毛坯堆叠在一起进行冲孔。留在模具上的边角料或落料没有及时清理干净。

The undercut in mold injection processing can be divided into these types. The assembly of upper and lower templates, fixed plates and male and female dies is not parallel. Uneven blanking clearance. The punch fixing does not meet the design requirements. Repeated punching or overlapping punching, i.e. punching one blank twice or punching several blanks stacked together. The leftover materials or blanking materials left on the mold are not cleaned up in time.

模具零件磨损较多，如导向件磨损导致配合间隙过大，未及时修复。模具修复组件松动。为防止咬模，应尽量选用带导向装置的模具，这对落料间隙小的模具尤为重要。固定凸模的方式要慎重考虑，模具要牢固可靠。

The die parts are worn a lot. For example, the guide parts are worn, resulting in excessive fitting clearance, which is not repaired in time. Mold repair components are loose. In order to prevent die biting, the die with guide device shall be selected as far as possible, which is particularly important for the die with small blanking gap. The way to fix the punch should be carefully considered, and the die should be firm and reliable.

济南注塑加工厂家提醒大家必须严格按照冲床操作规程进行操作，及时清理模具工作面，避免重复冲孔和叠冲，尤其是复合冲孔模具。要加强对模具的维护和管理，确保模具处于良好状态。

Jinan injection molding manufacturer reminds us that we must operate in strict accordance with the operating procedures of the punch, clean the working surface of the die in time, and avoid repeated punching and overlapping punching, especially the compound punching die. To strengthen the maintenance and management of the mold to ensure that the mold is in good condition.

在模具加工过程中，凸、凹模的边缘之间应保持一定的间隙，不得碰撞。更多相关的注意事项您可以来我们网站www.sdlqmj.com关注资讯了解，让您获取到更有用的信息！

In the process of die processing, a certain gap shall be maintained between the edges of male and female dies without collision. You can visit our website www.sdlqmj COM, let you get more useful information!