裝配模具時，要保證凹凸模之間有一定的間隙，間隙要對稱，這樣才能延長模具的使用壽命，保證零件的質量。其次模具注塑加工過程中會遇到咬模現象，兩個問題要如何進行處理呢？
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?
模具注塑加工時的內部間隙處理
Treatment of internal clearance during mold injection processing
1、直接測量，用量具直接測量凹凸模之間的間隙。由于凹凸模之間結構復雜，量具只能用在單邊間隙大于0.02mm的模具上。如果間隙太小，將難以測量。
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、作為墊片的參考測量，在凹凸模配合部分的間隙中插入厚度均勻的紙或金屬片。以墊片的厚度為參考標準，保證凹凸模間隙均勻。
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、用透光法測量，用光照射凹凸模之間的配合間隙，通過透光間隙的大小來判斷凹凸模間隙是否均勻。
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、在凸模上涂一層油漆，厚度等于凸模與凸模之間的間隙，然后插入凸模。這種方法簡單實用，適用于不能用墊片調整的模具。
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、鍍銅法，在凸模工作端鍍上一層銅層，厚度為凸模與凹模的配合間隙，然后插入凸模。這種方法類似于涂敷法，在模具使用過程中銅層會自動脫落。
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.
模具注塑加工時的咬模現象處理
Treatment of die biting during injection molding
模具注塑加工中的咬模可分為這幾種。上下模板、固定板和凸凹模的組裝不平行。沖裁間隙不均勻。沖頭固定不符合設計要求。重復沖孔或疊沖孔，即對一個毛坯進行兩次沖孔或將幾個毛坯堆疊在一起進行沖孔。留在模具上的邊角料或落料沒有及時清理干凈。
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.
模具零件磨損較多，如導向件磨損導致配合間隙過大，未及時修復。模具修復組件松動。為防止咬模，應盡量選用帶導向裝置的模具，這對落料間隙小的模具尤為重要。固定凸模的方式要慎重考慮，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.
濟南注塑加工廠家提醒大家必須嚴格按照沖床操作規程進行操作，及時清理模具工作面，避免重復沖孔和疊沖，尤其是復合沖孔模具。要加強對模具的維護和管理，確保模具處于良好狀態。
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.
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!
