CN107203682B - Method for establishing silk-screen printing in component packaging - Google Patents
Method for establishing silk-screen printing in component packaging Download PDFInfo
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- CN107203682B CN107203682B CN201710493273.8A CN201710493273A CN107203682B CN 107203682 B CN107203682 B CN 107203682B CN 201710493273 A CN201710493273 A CN 201710493273A CN 107203682 B CN107203682 B CN 107203682B
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 16
- 238000007650 screen-printing Methods 0.000 title claims description 6
- 238000004364 calculation method Methods 0.000 claims description 18
- 238000013461 design Methods 0.000 claims description 5
- 238000005538 encapsulation Methods 0.000 abstract 2
- 230000006870 function Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/39—Circuit design at the physical level
- G06F30/398—Design verification or optimisation, e.g. using design rule check [DRC], layout versus schematics [LVS] or finite element methods [FEM]
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Abstract
The invention discloses a method for establishing silk screen in component packaging, which comprises the following steps: s1, obtaining an error value; s2, selecting a corresponding pin and a target entity; s3, calculating to obtain a first parameter value according to the maximum value of the target entity, the error value and the external expansion value; calculating to obtain a second parameter value according to the pin distance, the pin side length and the external expansion value; and establishing silk screen according to the maximum value of the first parameter value and the second parameter value. The invention can quickly establish the silk screen in the process of establishing the encapsulation, simplifies the complex process of calculating the pin and comparing the entity sizes, improves the efficiency of establishing the encapsulation and ensures the standardization and the accuracy of data.
Description
Technical Field
The invention relates to the field of PCB design, in particular to a method for establishing silk screen in component packaging.
Background
At present, a plurality of PCB design software exist in the market, Cadence is used as the most widely applied software in the industry, not only is the Cadence provided with strong functions and a plurality of related software to support, but also because the Cadence provides an open secondary development interface and a more perfect development language library, a user can develop the Cadence according to the own needs.
The sketch language is a high-level programming language which is built in Cadence software and is based on a C language and an LISP language, the Cadence provides rich interactive functions for the sketch language, and the work efficiency can be greatly improved by researching the sketch language and then writing tools.
In the process of establishing the package, the operation steps of the prior art scheme are as follows: 1. clicking a measuring scale (the software has a measuring scale function), 2 selecting an object type, 3 clicking and measuring the object, 4 recording data, repeating 23 until the required data is measured completely, 5 calculating in an accumulation mode of a manual/calculator, 6 comparing a calculation result with a pin as a core and a calculation result with an entity value as a core, determining a silk screen establishing standard, 7 calculating coordinates of four points of a silk screen frame (rectangle), 8 sequentially establishing four line segments according to the coordinates of the four points in the 7, and connecting the four line segments together to form the silk screen frame. Different parts need to be repeatedly calculated, compared and established by packaging and establishing personnel, and the work can be duplicated, the time consumption is long, the manual calculation efficiency is low, the error rate is high, and a large amount of working hours are wasted.
Disclosure of Invention
The invention aims to provide a method for establishing silk-screen in component packaging, which can quickly establish silk-screen in the packaging establishing process, simplify the complex process of calculating pin and entity size for comparison, improve the packaging establishing efficiency and ensure the standardization and the accuracy of data.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for establishing silk screen printing in component packaging comprises the following steps:
s1, obtaining an error value;
s2, selecting a corresponding pin and a target entity;
s3, calculating to obtain a first parameter value according to the maximum value of the target entity, the error value and the external expansion value; calculating to obtain a second parameter value according to the pin distance, the pin side length and the external expansion value; and establishing silk screen according to the maximum value of the first parameter value and the second parameter value.
Further, the selecting the corresponding pin and the target entity includes:
determining the distribution mode of the pin;
and selecting the corresponding pin and the target entity according to the distribution mode.
Further, when the distribution mode of the pins is that the pins exist in all four directions of the universal device, the selecting the corresponding pins and the target entity according to the distribution mode includes:
taking the general device as a target entity;
and selecting one pin from the horizontal direction and the vertical direction of the target entity respectively.
Further, when the distribution mode of the pins is that pins exist in both directions of the general device, the selecting the corresponding pin and the target entity according to the distribution mode includes:
taking the general device as a target entity;
selecting a pin in any one direction of the target entity.
Further, the determining the distribution mode of the pin pins includes: and acquiring the coordinates of the pin, and calculating and determining the arrangement mode according to the coordinates of the pin.
Further, in step S3, the pin pitch calculation step includes: acquiring coordinate values of the pin; and calculating to obtain the pin spacing according to the coordinate value.
Further, in step S3, the step of calculating the side length of the pin is: acquiring a limiting frame of the pad; and calculating the side length of the pin according to the limiting frame.
Further, in step S3, the entity maximum value is calculated by: grabbing an entity line segment; and after the starting point and the end point of the line segment are obtained, the maximum value of the entity is obtained through difference calculation.
The beneficial effect of the invention is that,
the method can quickly establish the silk screen in the process of establishing the package, judge the distribution mode of the pins through the acquired coordinate values of the pins, and automatically calculate the side length and the pin distance of the pins so as to obtain a first parameter value by calculation; and obtaining the entity maximum value by capturing the entity line segment and obtaining a second parameter value by calculation. The complex process of calculating the pin and comparing the entity sizes is simplified, the efficiency of package establishment is improved, and the standardization and the accuracy of data are ensured.
Drawings
FIG. 1 is a flow chart of the method of the present invention.
Detailed Description
In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and procedures are omitted so as to not unnecessarily limit the invention.
In order to facilitate the implementation of the method for establishing the silk screen in the packaging of the components, configuration files and shortcut keys are required to be set before the steps of the invention are implemented: firstly, adding load ("silkscreen. il") in an allogoro.ilinit file, wherein the silkscreen.il is a source program file, and the command is used for loading a program; secondly, a shortcut key is added in the env file, taking the letter a as an example, funkey a silkscreen, wherein the silkscreen is a command defined in a program, the program of the invention is executed after the command is executed, and the command is replaced by the shortcut key a. After the configuration file and the shortcut key are set, the steps of the invention can be executed after the program is run in the allegoro.
As shown in fig. 1, a method for establishing a silk screen in component packaging includes the following steps:
step S1: an error value is obtained.
Such an error value may be obtained by: and (4) opening the allegoro software, pressing the letter A, and inputting an error value according to prompting requirements.
Step S2: a corresponding pin and target entity are selected.
In an exemplary embodiment, selecting the corresponding pin and target entity may include the steps of:
and judging the distribution mode of the pins, determining whether the universal device has the pins in four directions or two directions, and selecting the target entity according to the distribution mode of the pins. If the four directions all have pins, acquiring the selected target entity, and selecting one pin from the horizontal direction and the vertical direction of the target entity respectively; and if the two directions have pins, acquiring the selected entity and selecting any pin.
Step S3: calculating to obtain a first parameter value according to the maximum value of the target entity, the error value and the external expansion value; calculating to obtain a second parameter value according to the pin distance, the pin side length and the external expansion value; and establishing silk screen according to the maximum value of the first parameter value and the second parameter value.
The calculation step of the pin distance may be:
the coordinate that each pin can obtain is a list that is composed of abscissa and ordinate, the first element in the list is the abscissa, the second element is the ordinate, and the selection of the first or second element depends on the arrangement mode of the pins. In the company design specification, the device regulation pin that there are pin feet in two directions is located the device left and right sides and symmetry, calculates the pin interval under this kind of circumstances and only uses the abscissa, and the step is: acquiring a coordinate list of a left pin and a right pin; taking the first element of the list, and obtaining two abscissas by two pin feet; and (4) performing difference on the two horizontal coordinates, and taking an absolute value to obtain the pin distance.
The method comprises the following steps that the device with pin feet in four directions needs to use the abscissa and the ordinate for calculating the pin distance: respectively obtaining a coordinate list of two pin feet in the horizontal direction, taking a first element of the list, performing difference on two abscissa coordinates, and taking an absolute value to obtain a transverse pin distance; and respectively obtaining a coordinate list of two pin feet in the vertical direction, taking the second element of the list, performing difference on two vertical coordinates, and taking an absolute value to obtain the longitudinal pin distance.
The fundamental purpose of calculating the length of the entity and the pin pitch is to obtain the maximum range of the device in the transverse direction and the longitudinal direction, and the silk screen frame must include the entity and the pin simultaneously.
The calculation steps of the pin side length are as follows: the bounding box is a rectangular box in the software that describes the size of the space occupied by an object, and can be understood as the range occupied by this object. The numerical value obtained by obtaining the limiting frame in the software is a list consisting of two coordinates, wherein the two coordinates are respectively the lower left corner coordinate and the upper right corner coordinate of the rectangular frame occupied by the object, and the two points can determine that the rectangle is unique. The calculation of the side length of the pin is actually a process of calculating the side length of the pad added to the pin, and the two are equal in size and the pad is provided with a limiting frame, so that the calculation is convenient. The detailed steps are as follows: acquiring the pad added in the pin; acquiring a limited frame value list of the pad; and (4) respectively subtracting the coordinates of the two points obtained in the previous step, namely the ordinate and the abscissa, wherein the difference between the abscissas is the length of the pin, and the difference between the ordinates is the width of the pin.
The calculation steps of the entity maximum value are as follows: grabbing an entity line segment; after the starting point and the end point of the line segment are obtained, the maximum value of the entity is obtained through difference calculation; the error value is a numerical value input by the user; the flare value is determined by the company design specifications. In order to ensure the consistency of units, the design unit is firstly changed into mm with 4-bit precision and then calculation is carried out, and the input error must be in mm.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (5)
1. A method for establishing silk screen in component packaging is characterized by comprising the following steps:
s1, obtaining an error value; the error value is a numerical value input by a user, and can be obtained by the following steps: opening the allegoro software, and inputting an error value according to the result;
s2, selecting a corresponding pin and a target entity; the general device is a target entity;
s3, calculating to obtain a first parameter value according to the maximum value of the target entity, the error value and the external expansion value; calculating to obtain a second parameter value according to the pin distance, the pin side length and the external expansion value; establishing silk screen according to the maximum value of the first parameter value and the second parameter value;
the pin interval calculation method comprises the following steps: the coordinate that each pin can obtain is a list composed of abscissa and ordinate, the first element in the list is the abscissa, the second element is the ordinate, choose the first or the second element to depend on the arrangement mode of the pin;
the device regulation pins with pin pins in two directions are positioned at the left side and the right side of the device and are symmetrical, the pin distance is calculated under the condition that only the horizontal coordinate is used, and the steps are as follows: acquiring a coordinate list of a left pin and a right pin; taking the first element of the list, and obtaining two abscissas by two pin feet; the difference is made between the two horizontal coordinates, and the absolute value is taken to obtain the pin distance;
the method comprises the following steps that the device with pin feet in four directions needs to use the abscissa and the ordinate for calculating the pin distance: respectively obtaining a coordinate list of two pin feet in the horizontal direction, taking a first element of the list, performing difference on two abscissa coordinates, and taking an absolute value to obtain a transverse pin distance; respectively obtaining a coordinate list of two pin feet in the vertical direction, taking the second element of the list, making a difference between two vertical coordinates, and taking an absolute value to obtain a longitudinal pin distance;
the fundamental purpose of calculating the length of the entity and the pin distance is to obtain the maximum range of the device in the transverse direction and the longitudinal direction, and the entity and the pin are simultaneously included in a silk-screen frame;
the calculation steps of the pin side length are as follows: the limiting frame is a rectangular frame for describing the size of the space occupied by the object in the software, the numerical value obtained by obtaining the limiting frame in the software is a list consisting of two coordinates, wherein the two coordinates are the lower left corner coordinate and the upper right corner coordinate of the rectangular frame occupied by the object respectively, and the two points can determine that the rectangle is unique;
the method for calculating the side length of the pin is a process for calculating the side length of the pad added to the pin, the side length of the pin and the side length of the pad are equal in size, the pad is provided with a limiting frame, and the steps are detailed as follows: acquiring the pad added in the pin; acquiring a limited frame value list of the pad; respectively subtracting the coordinates of the two points obtained in the previous step, namely the ordinate and the abscissa of the two points, wherein the difference between the abscissa is the length of the pin, and the difference between the ordinate is the width of the pin;
the calculation steps of the entity maximum value are as follows: grabbing an entity line segment; after the starting point and the end point of the line segment are obtained, the maximum value of the entity is obtained through difference calculation; the error value is a numerical value input by the user; the flare value is determined by the company design specifications.
2. The method for establishing silk-screen printing in component packaging according to claim 1, wherein the selecting corresponding pin and target entity comprises: determining the distribution mode of the pin; and selecting the corresponding pin and the target entity according to the distribution mode.
3. The method for establishing the silk-screen in the component packaging according to claim 2, wherein when the distribution mode of the pins is that the pins exist in all four directions of the universal device, the selecting the corresponding pins and the target entity according to the distribution mode comprises: taking the general device as a target entity; and selecting one pin from the horizontal direction and the vertical direction of the target entity respectively.
4. The method for establishing silk-screen printing in component packaging according to claim 2, wherein when the distribution mode of the pins is that the pins exist in both directions of the general device, the selecting the corresponding pins and the target entity according to the distribution mode comprises: taking the general device as a target entity; selecting a pin in any one direction of the target entity.
5. The method for establishing the silk-screen printing in the component packaging according to claim 2, wherein the determining of the distribution mode of the pin pins comprises: and acquiring the coordinates of the pin, and calculating and determining the arrangement mode according to the coordinates of the pin.
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| CN201710493273.8A CN107203682B (en) | 2017-06-26 | 2017-06-26 | Method for establishing silk-screen printing in component packaging |
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| CN109359384B (en) * | 2018-10-17 | 2022-02-18 | 郑州云海信息技术有限公司 | Method and device for calling silk-screen mark into printed circuit board |
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| US6883425B2 (en) * | 2002-09-13 | 2005-04-26 | Duke W. Goss | Screen printing device |
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| CN105208775A (en) * | 2015-08-07 | 2015-12-30 | 深圳崇达多层线路板有限公司 | PCB design method for preventing BGA from solder bridge |
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