阅读说明：本技术 工业图形计算机辅助制造的防焊数据优化处理方法 (Welding-proof data optimization processing method for industrial graphic computer-aided manufacturing ) 是由 张磊 赵敏 高迎辉 于 2021-07-10 设计创作，主要内容包括：本发明公开了工业图形计算机辅助制造的防焊数据优化处理方法,处理方法包括一下步骤：步骤1：做预处理,找准防焊与外层的对应关系,单边距离等数据,计算外层和防焊的网络数据,同网络与不同网络使用不同的处理方法；步骤2：找到外层物件之间的间距和位置关系,提供给防焊的切削做参照；本防焊数据的智能优化处理方法,可以自动化实现软件的防焊处理,同时提供参数调配,可以根据用户的不同制程能力的需求自由调配,达到用户的生产要求,并有效的提高产品的良率；本防焊数据的智能优化处理方法,平均优化时间在10分钟以内,大大缩短了软件处理防焊层数据的时间,同时大大减少了人为干预和操作带来的成本。(The invention discloses a method for optimizing and processing welding-proof data of industrial graphic computer-aided manufacturing, which comprises the following steps: step 1: preprocessing, finding data such as the corresponding relation between the welding prevention and the outer layer and the unilateral distance, calculating the data of the outer layer and the welding prevention network, and using different processing methods for the same network and different networks; step 2: finding the distance and the position relation between the outer layer objects and providing the welding-proof cutting as reference; the intelligent optimization processing method of the anti-welding data can automatically realize the anti-welding processing of software, provides parameter allocation at the same time, can freely allocate according to the requirements of different processing capacities of users, meets the production requirements of the users and effectively improves the yield of products; the intelligent optimization processing method of the welding-proof data has the average optimization time within 10 minutes, greatly shortens the time of processing the welding-proof data by software, and greatly reduces the cost brought by human intervention and operation.)

1. The method for optimizing and processing the welding-proof data of the industrial graphic computer-aided manufacturing is characterized by comprising the following steps of:

step 1: preprocessing, finding data such as the corresponding relation between the welding prevention and the outer layer and the unilateral distance, calculating the data of the outer layer and the welding prevention network, and using different processing methods for the same network and different networks;

step 2: finding the distance and the position relation between the outer layer objects and providing the welding-proof cutting as reference;

and step 3: measuring the solder mask window according to the unilateral distance between the outer layer object and the solder mask object and combining the parameters provided by the user, and adjusting the size of the solder mask window;

and 4, step 4: controlling the distance between the solder mask windows on the basis of the solder mask window measurement;

and 5: controlling the distance between the solder mask window and the outer layer circuit on the basis of the solder mask window measurement;

step 6: anti-tombstoning effect;

and 7: increasing plug holes and blocking points;

and 8: green oil protection of the appearance line by the anti-welding windowing is added;

and step 9: and optimizing the problems of sharp corners and the like which can be generated in the steps.

Technical Field

The invention relates to the technical field of printed circuit board production, in particular to a solder mask data optimization processing method for industrial graphic computer-aided manufacturing.

Background

PCB manufacturers need to process the welding-proof layer data according to the process conditions, wherein the processing mainly comprises the steps of modifying the size of a welding-proof windowing, adjusting the distance of the welding-proof windowing, performing anti-tombstoning treatment on the welding-proof windowing, and the like.

The solder bridge is also called green oil bridge and solder dam, which is a factory batch paster to prevent the short circuit of pins of SMD components. The green oil bridge is the green oil between the SMD and the SMD component (the width of the solder resist is reserved between the two solder resist windows), mainly to prevent short circuit effects.

The solder mask refers to the size of the part where copper is exposed at the position needing welding, namely the size of the part without covering ink, and the solder mask is also a measure for special requirements, such as heat dissipation of a front plate, good contact with a shell and the like. The cover line refers to the size and the amount of the part of the circuit covered by the solder resist oil, and the line exposure can be caused when the distance of the cover line is too small in the production process.

The adjustment and modification of the current data consumes much labor and man-hours.

Therefore, the CAM intelligent optimization processing method of the Solder Mask data is designed, aims to improve the board yield of the PCB, reduce the problems of tombstoning, short circuit, open circuit and the like, and improve the performances of corrosion resistance, heat dissipation and conduction of the PCB.

Disclosure of Invention

The invention aims to provide a solder mask data optimization processing method for industrial graphic computer-aided manufacturing, which can automatically realize the solder mask processing of software, simultaneously provide parameter allocation, can be freely allocated according to the requirements of different process capacities of users, meet the production requirements of the users and effectively improve the yield of products; the intelligent optimization processing method of the welding-proof data has the average optimization time within 10 minutes, greatly shortens the time of processing the welding-proof data by software, and greatly reduces the cost brought by human intervention and operation.

The purpose of the invention can be realized by the following technical scheme:

the method for optimizing the welding-proof data of the industrial graphic computer-aided manufacturing comprises the following steps:

step 1: preprocessing, finding data such as the corresponding relation between the welding prevention and the outer layer and the unilateral distance, calculating the data of the outer layer and the welding prevention network, and using different processing methods for the same network and different networks;

step 2: finding the distance and the position relation between the outer layer objects and providing the welding-proof cutting as reference;

and step 3: measuring the solder mask window according to the unilateral distance between the outer layer object and the solder mask object and combining the parameters provided by the user, and adjusting the size of the solder mask window;

and 4, step 4: on the basis of the measurement of the welding prevention windowing, controlling the distance between the welding prevention windowing to prevent the short circuit of the welding prevention windowing;

and 5: on the basis of the measurement of the solder mask window, controlling the distance between the solder mask window and the outer layer circuit to prevent short circuit between the solder mask window and the outer layer circuit;

step 6: the tombstone effect is prevented, the possibility of tombstone effect generated by the SMD paster is reduced, and the exposed outer layer circuit of the welding-proof windowing is prevented;

and 7: plug holes and blocking points are added to prevent solder mask insulating materials from flowing into the PCB and polluting inner and outer layer circuits;

and 8: green oil protection of the appearance line by the anti-welding windowing is added;

and step 9: and the problems of sharp corners and the like possibly generated in the steps are optimized, so that the processed anti-welding windowing is smoother.

The invention has the beneficial effects that:

1. the intelligent optimization processing method of the welding-proof data can automatically realize the welding-proof processing of software, simultaneously provide parameter allocation, can freely allocate according to the requirements of different processing capacities of users, meet the production requirements of the users and effectively improve the yield of products;

2. the intelligent optimization processing method of the welding-proof data has the average optimization time within 10 minutes, greatly shortens the time of processing the welding-proof data by software, and greatly reduces the cost brought by human intervention and operation.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a flow chart of the solder mask data optimization processing method of the present invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, the method for optimizing the welding prevention data of the industrial graphic computer aided manufacturing comprises the following steps:

step 1: preprocessing, finding data such as the corresponding relation between the welding prevention and the outer layer and the unilateral distance, calculating the data of the outer layer and the welding prevention network, and using different processing methods for the same network and different networks;

step 2: finding the distance and the position relation between the outer layer objects and providing the welding-proof cutting as reference;

and step 3: measuring the solder mask window according to the unilateral distance between the outer layer object and the solder mask object and combining the parameters provided by the user, and adjusting the size of the solder mask window;

and 4, step 4: on the basis of the measurement of the welding prevention windowing, controlling the distance between the welding prevention windowing to prevent the short circuit of the welding prevention windowing;

and 5: on the basis of the measurement of the solder mask window, controlling the distance between the solder mask window and the outer layer circuit to prevent short circuit between the solder mask window and the outer layer circuit;

step 6: the tombstone effect is prevented, the possibility of tombstone effect generated by the SMD paster is reduced, and the exposed outer layer circuit of the welding-proof windowing is prevented;

and 7: plug holes and blocking points are added to prevent solder mask insulating materials from flowing into the PCB and polluting inner and outer layer circuits;

and 8: green oil protection of the appearance line by the anti-welding windowing is added;

and step 9: and the problems of sharp corners and the like possibly generated in the steps are optimized, so that the processed anti-welding windowing is smoother.

Example 1

The method for optimizing the welding prevention data of the industrial graphic computer-aided manufacturing comprises the following steps:

and step S1: automatically adjusting the size of the solder mask windowing according to the type and size of the outer layer welding pad of the PCB;

and step S2: automatically adjusting the distance between the welding-proof windows, namely the size of the welding-proof bridge, and preventing short circuit from being formed between the SMD patches after the SMD patches are mounted;

and step S3: automatically adjusting the distance between the solder mask window and the outer layer circuit to prevent short circuit between the SMD patches and the circuit;

and step S4: anti-welding windowing automatically increases anti-tombstoning treatment, and reduces tombstoning phenomenon in SMD (surface mounted device) patches;

and step S5: the solder mask window is automatically adjusted to increase the hole plugging and the blocking point. The insulating material of the solder mask window is prevented from flowing into the inner-layer circuit and the outer-layer circuit through the heat dissipation holes;

and step S6: windowing of the welding-proof windowing automatic forming line;

the method comprises the following specific steps:

the method comprises the following steps: and (3) automatic size adjustment: through automatic identification, the size of the windowing is automatically adjusted according to the shape, position, type and characteristic of the outer layer bonding pad, so that the unilateral distance between the solder mask windowing and the outer layer bonding pad is kept between 0.5mil and 2mil, and if the unilateral distance is less than 0.5mil, the problem of bonding pad dislocation is easily caused due to inaccurate SMD bonding; if the unilateral distance is more than 2mil, the coating of green oil, namely an anti-corrosion material, is easy to be uneven, so that a circuit is exposed in the air and is easy to be corroded, and the specific numerical value can be adjusted according to various factors such as a process, materials, equipment and the like of PCB production and can be finished by shrinking or expanding the size of a window;

step two: automatically adjusting the size of the green oil bridge: under the condition of ensuring that the distance of a single side is within the range of 0.5-2 mil, the size of a solder mask green oil bridge is ensured by cutting the solder mask windowing, cutting can be carried out through a line or a plane with negative polarity, other solder mask windowing can not be influenced during cutting, original document windowing is connected due to special reasons and cannot be forcibly cut to form the green oil bridge, and if one solder mask windowing corresponds to a plurality of outer-layer welding pads, namely a skylight, the original document windowing can not be forcibly cut to form the green oil bridge, on the contrary, the circuit breaking of the PCB can be caused;

step three: automatically adjusting the distance between the solder mask window and the outer layer circuit: under the condition of ensuring that the unilateral distance is within the range of 0.5-2 mil, cutting the anti-welding windowing window to ensure that the anti-welding coverage is within a certain range, wherein the distance between the anti-welding window and the unilateral distance between the welding pad and the distance between the welding pad and the welding coverage need to be balanced, namely, the respective minimum distance needs to be ensured, and proper adjustment needs to be carried out according to respective weight;

step four: anti-stele-up: adjusting the area of the intersection of the solder-resisting window and the contacted outer layer circuit: if the anti-welding windowing is connected with the outer layer circuit, the SMD paster can generate unbalanced welding tension due to uneven heat absorption of a welding pad caused by the material of the outer layer circuit in the process of adding the tin paste to the anti-welding windowing, so that the SMD paster can generate tombstone effect to cause welding open circuit, the contact area of the anti-welding windowing and the outer layer circuit is too large, the phenomenon of copper leakage can be generated, the occurrence of the situation can be avoided by reducing the contact area of the intersection of the anti-welding windowing and the outer layer circuit, and the tombstone prevention function can optimize and cut aiming at the problem of deformation of the SMD windowing;

step five: preventing vertical flow: the anti-welding windowing increases the hole plugging and blocking points of the hole: in order to avoid that in the manufacturing process of the PCB, solder mask insulating materials flow into a circuit from the heat dissipation holes, plug holes or blocking points are required to be added on the basis of the heat dissipation holes, specific numerical values are determined according to the size of the holes and the PCB production process, the specific numerical values can be manually adjusted, or can be automatically adjusted according to the proportion between the area of the intersection part of the holes and the windowing and the area of the holes, and if the proportion is less than 50%, the solder mask windowing needs to be cut; if the proportion is more than 50%, windowing needs to be added;

step six: increasing the forming line windowing: solder mask green oil protection can be added when the PCB is formed, and the numerical value of windowing can be increased by self-definition.

The working principle of the invention is as follows: the intelligent optimization processing method of the anti-welding data can automatically realize the anti-welding processing of software, provides parameter allocation at the same time, can freely allocate according to the requirements of different processing capacities of users, meets the production requirements of the users and effectively improves the yield of products;

the intelligent optimization processing method of the welding-proof data has the average optimization time within 10 minutes, greatly shortens the time of processing the welding-proof data by software, and greatly reduces the cost brought by human intervention and operation.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.