WO2021143295A1 - Pcb 板方向的识别方法 - Google Patents

Pcb 板方向的识别方法 Download PDF

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Publication number
WO2021143295A1
WO2021143295A1 PCT/CN2020/126365 CN2020126365W WO2021143295A1 WO 2021143295 A1 WO2021143295 A1 WO 2021143295A1 CN 2020126365 W CN2020126365 W CN 2020126365W WO 2021143295 A1 WO2021143295 A1 WO 2021143295A1
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Prior art keywords
pcb board
mark
pcb
detected
conveying path
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PCT/CN2020/126365
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English (en)
French (fr)
Inventor
何茂水
肖乾清
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惠州市成泰自动化科技有限公司
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Publication of WO2021143295A1 publication Critical patent/WO2021143295A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/70—Determining position or orientation of objects or cameras
    • G06T7/73—Determining position or orientation of objects or cameras using feature-based methods
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10116—X-ray image
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30108—Industrial image inspection
    • G06T2207/30141—Printed circuit board [PCB]

Definitions

  • the invention relates to the field of PCB processing, in particular to a method for identifying the direction of a PCB board.
  • the PCB design is almost rectangular, which is symmetrical, which makes it difficult to distinguish the front and back directions of the PCB board from the front and back directions.
  • During the transportation of the PCB board it often occurs that the front and back directions of the PCB board are wrong, which causes the PCB board to be reversed or transported to the processing device, which leads to the wrong direction of the PCB board.
  • Failure to process the PCB board affects the processing efficiency, or causes the processing device to process the PCB board with the wrong direction and the occurrence of defective products affects the yield of the product.
  • the present invention provides a method for identifying the direction of a PCB board, which includes the following steps:
  • Pre-processing According to the front and back direction of the PCB board and the front and back direction, a mark that can identify the front and back direction and the front and back direction of the PCB board is set on the PCB board, and the mark is set on the left side of the center line of the length direction of the PCB board. Or on the right, the mark is a non-centrally symmetrical pattern set on the PCB, and the shape of the centrally symmetrical pattern is recorded as a standard pattern in the X-Ray detection device;
  • the front and back directions of the PCB board refer to the orientation of the upper and lower surfaces of the PCB board; the front-rear direction of the PCB board refers to the front and back end directions of the PCB board along the transported direction when the PCB board is transported; the PCB board with the correct orientation Refers to the PCB board whose direction meets the requirements of the processing equipment after being transported by the transport mechanism to the processing equipment of the next process.
  • Transportation of PCB board Place the marked PCB board on the conveying mechanism for transportation, and the conveying mechanism drives the PCB board to move along the conveying path of the PCB board, where the long side of the PCB board coincides with the edge of the conveying path;
  • the conveying path refers to the range that the PCB board passes through as a whole in the process of being conveyed by the conveying mechanism.
  • the specific range of the conveying path refers to the range that the mark on the PCB will pass when the PCB board with the correct direction moves on the conveying path, that is, when the square direction and the front and back directions of the PCB board are the same as the preset value, the PCB board The mark on will pass through a specific range on the conveying path.
  • step S2 Determine whether the mark is detected. If the mark is not detected, it indicates that the PCB board orientation is wrong. At this time, it is judged that the PCB board orientation is wrong, and if the mark is detected, go to step S3;
  • the PCB board is flipped left and right or rotated 180° in the plane relative to the PCB board with the correct orientation, and the mark will deviate The original position. Therefore, if the X-Ray detection device does not detect the mark, it means that the mark on the PCB board has not been set within a specific range on the conveying path, and the PCB board is flipped left and right or in the correct direction relative to the PCB board. If the plane is rotated by 180°, it is judged that the direction of the PCB board is incorrect.
  • the mark on the PCB board is set on the left or right side of the center line of the length direction of the PCB board, that is, the mark on the PCB board is located on the left or right side of the center line of the conveying path. Therefore, if the mark on the PCB board The mark has passed a specific range on the conveying path, but the shape of the detected mark cannot coincide with the standard shape, it means that the PCB has been flipped back and forth. Therefore, the front and back directions of the PCB board are incorrect, and the direction of the PCB board is judged to be incorrect. correct.
  • a non-centrosymmetric figure shape mark is provided on one side of the PCB board, and combined with the X-Ray detection device, it can quickly detect whether the direction of the PCB board on the conveying mechanism is correct, thereby avoiding subsequent processing techniques. In the case of defective products due to the wrong direction of the PCB board.
  • the detection range of the X-Ray detection device of the present invention is a specific range on the conveying path, that is, when the X-Ray detection device detects the PCB board moving on the conveying path, only a part of the PCB board needs to be covered, and there is no need to The entire PCB board is tested, so the present invention can identify the direction of the PCB board whose area exceeds the detection orientation of the X-Ray detection device.
  • the mark can be arranged on the inner layer of the PCB board or on the surface of the PCB board.
  • Using the X-Ray detection device to detect the PCB board can detect the marks located inside the PCB board and the marks located on the surface of the PCB board, so the marks can be set on the inside and outer surface of the PCB board, and the marks can be set flexibly Position so that the PCB board produced can meet the requirements of customers.
  • the mark is a hole structure provided on the PCB board.
  • the setting of the mark is carried out before the PCB board is pressed, and if the mark is arranged on the outer surface of the PCB board, the setting of the mark can be carried out before the PCB board is pressed. It can also be carried out after the PCB board is pressed.
  • the mark is a pattern formed by paint coated on the PCB board.
  • the setting of the mark is carried out before the PCB board is pressed, and if the mark is arranged on the outer surface of the PCB board, the setting of the mark can be carried out before the PCB board is pressed. It can also be carried out after the PCB board is pressed.
  • the mark is arranged on the edge of the PCB board near the long side.
  • the long side of the PCB board coincides with the two sides of the transfer path, the long side of the PCB board is parallel to the transfer direction of the PCB board, so the mark is located at the edge of the transfer path, and the mark is located at the edge of the transfer path for X-Ray inspection device setting.
  • the specific range is located on the left or right side of the center line of the conveying path.
  • the specific range is located on the left side of the center line of the conveying path
  • the specific range is located at the right side of the conveying path.
  • the X-Ray detection device will not detect the PCB boards on both sides of the center line of the conveying path at the same time, so as to avoid the PCB board from turning left and right relative to the PCB board in the correct direction. The mark on it can still be detected by the X-Ray detection device after rotating 180° in the plane.
  • a non-centrosymmetric figure shape mark is provided on one side of the PCB board, and combined with the X-Ray detection device, it can quickly detect whether the direction of the PCB board on the conveying mechanism is correct, thereby avoiding subsequent processing techniques. In the case of defective products due to the wrong direction of the PCB board.
  • the detection range of the X-Ray detection device of the present invention is a specific range on the conveying path, that is, when the X-Ray detection device detects the PCB board moving on the conveying path, only a part of the PCB board needs to be covered, and there is no need to The entire PCB board is tested, so the present invention can identify the direction of the PCB board whose area exceeds the detection orientation of the X-Ray detection device.
  • a method for identifying the direction of a PCB board including the following steps:
  • Pre-processing According to the front and back direction of the PCB board and the front and back direction, a mark that can identify the front and back direction and the front and back direction of the PCB board is set on the PCB board, and the mark is set on the left side of the center line of the length direction of the PCB board. Or on the right, the mark is a non-centrally symmetrical pattern set on the PCB, and the shape of the centrally symmetrical pattern is recorded as a standard pattern in the X-Ray detection device;
  • the front and back directions of the PCB board refer to the orientation of the upper and lower surfaces of the PCB board; the front-rear direction of the PCB board refers to the front and back end directions of the PCB board along the transported direction when the PCB board is transported; the PCB board with the correct orientation Refers to the PCB board whose direction meets the requirements of the processing equipment after being transported by the transport mechanism to the processing equipment of the next process.
  • Transportation of PCB board Place the marked PCB board on the conveying mechanism for transportation, and the conveying mechanism drives the PCB board to move along the conveying path of the PCB board, where the long side of the PCB board coincides with the edge of the conveying path;
  • the conveying path refers to the range that the PCB board passes through as a whole in the process of being conveyed by the conveying mechanism.
  • the specific range of the conveying path refers to the range that the mark on the PCB will pass when the PCB board with the correct direction moves on the conveying path, that is, when the square direction and the front and back directions of the PCB board are the same as the preset value, the PCB board The mark on will pass through a specific range on the conveying path.
  • step S2 Determine whether the mark is detected. If the mark is not detected, it indicates that the PCB board orientation is wrong. At this time, it is judged that the PCB board orientation is wrong, and if the mark is detected, go to step S3;
  • the PCB board is flipped left and right or rotated 180° in the plane relative to the PCB board with the correct orientation, and the mark will deviate The original position. Therefore, if the X-Ray detection device does not detect the mark, it means that the mark on the PCB board has not been set within a specific range on the conveying path, and the PCB board is flipped left and right or in the correct direction relative to the PCB board. If the plane is rotated by 180°, it is judged that the direction of the PCB board is incorrect.
  • the mark on the PCB is set on the left or right of the center line of the length direction of the PCB, that is, the mark on the PCB is located on the left or right of the center line of the conveying path.
  • the mark has passed a specific range on the conveying path, but the shape of the detected mark cannot coincide with the standard shape, it means that the PCB has been flipped back and forth. Therefore, the front and back directions of the PCB board are incorrect, and the direction of the PCB board is judged to be incorrect. correct.
  • a non-centrosymmetric figure shape mark is provided on one side of the PCB board, and combined with the X-Ray detection device, it can quickly detect whether the direction of the PCB board on the conveying mechanism is correct, thereby avoiding subsequent processing techniques. In the case of defective products due to the wrong direction of the PCB board.
  • the detection range of the X-Ray detection device of the present invention is a specific range on the conveying path, that is, when the X-Ray detection device detects the PCB board moving on the conveying path, only a part of the PCB board needs to be covered, and there is no need to The entire PCB board is tested, so the present invention can identify the direction of the PCB board whose area exceeds the detection orientation of the X-Ray detection device.
  • the mark can be arranged on the inner layer of the PCB board or on the surface of the PCB board.
  • Using the X-Ray detection device to detect the PCB board can detect the marks located inside the PCB board and the marks located on the surface of the PCB board, so the marks can be set on the inside and outer surface of the PCB board, and the marks can be set flexibly Position so that the PCB board produced can meet the requirements of customers.
  • the mark is a hole structure provided on the PCB board.
  • the setting of the mark is carried out before the PCB board is pressed, and if the mark is arranged on the outer surface of the PCB board, the setting of the mark can be carried out before the PCB board is pressed. It can also be carried out after the PCB board is pressed.
  • the mark is a pattern formed by paint coated on the PCB board.
  • the setting of the mark is carried out before the PCB board is pressed, and if the mark is arranged on the outer surface of the PCB board, the setting of the mark can be carried out before the PCB board is pressed. It can also be carried out after the PCB board is pressed.
  • the mark is arranged on the edge of the PCB board near the long side.
  • the long side of the PCB board coincides with the two sides of the transfer path, the long side of the PCB board is parallel to the transfer direction of the PCB board, so the mark is located at the edge of the transfer path, and the mark is located at the edge of the transfer path for X-Ray inspection device setting.
  • the specific range is located on the left or right of the center line of the conveying path.
  • the specific range is located on the left side of the center line of the conveying path
  • the specific range is located at the right side of the conveying path.
  • the X-Ray detection device will not detect the PCB boards on both sides of the center line of the conveying path at the same time, so as to avoid the PCB board from turning left and right relative to the PCB board in the correct direction. The mark on it can still be detected by the X-Ray detection device after rotating 180° in the plane.
  • the invention can quickly identify the direction of the PCB board.

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Abstract

本发明涉及一种PCB板方向的识别方法，属于PCB加工领域，其包括如下步骤：前处理：在PCB板上设置标记；PCB板的运输：将设置有标记的PCB板放在输送机构上进行运输，输送机构带动PCB板沿着PCB板的输送路径进行移动，其中，PCB板的长边与输送路径的边缘重合；方向识别：其包括如下步骤，S1、使用X-Ray检测装置对输送路径的特定范围进行检测；S2、判断是否检测到标记，如果没有检测到标记则判断PCB板方向错误，如果检测到标记则进入步骤S3； S3、判断检测到的标记的形状是否可以与标准图形重合，如果不能重合则判断PCB板方向错误；如果检测到的标记的形状可以与标准图形重合，则判断PCB板的方向正确。本发明可以快速地对PCB板的方向进行识别。

Description

PCB板方向的识别方法 技术领域
本发明涉及PCB加工领域，特别涉及一种PCB板方向的识别方法。
 背景技术
PCB的设计几乎都为矩形，其呈对称状，导致PCB板的正反方向和前后方向难以区分。在PCB板的运输过程中经常会出现因PCB板的正反方向和前后方向弄错，而导致PCB板被弄反前后方向或者正反方向输送到加工装置，进而导致因PCB板方向错误加工装置无法对PCB板进行加工而影响加工效率，或者导致加工装置对方向错误的PCB板进行加工而出现不良品的影响产品的良品率。
 技术问题
在PCB板的运输过程中经常会出现因PCB板的正反方向和前后方向弄错，而导致PCB板被弄反前后方向或者正反方向输送到加工装置，进而导致因PCB板方向错误加工装置无法对PCB板进行加工而影响加工效率，或者导致加工装置对方向错误的PCB板进行加工而出现不良品的影响产品的良品率。
 技术解决方案
本发明提供一种PCB板方向的识别方法，包括如下步骤：
前处理：在PCB板上根据PCB板的正反方向以及前后方向设置可以标识PCB板的正反方向和前后方向的标记，所述标记设置于所述PCB板的长度方向的中心线的左侧或者右侧，所述标记为设置在PCB板上的非中心对称图形，并将该中心对称图形的形状作为标准图形记录在X-Ray检测装置中；
其中，PCB板的正反方向指PCB板的上表面和下表面的朝向；PCB板的前后方向指PCB板被运输时其沿着被运输的方向的前端和后端的朝向；方向正确的PCB板指被输送机构输送到下一工序的加工设备后，其方向符合加工设备的要求的PCB板。
PCB板的运输：将设置有标记的PCB板放在输送机构上进行运输，输送机构带动PCB板沿着PCB板的输送路径进行移动，其中，PCB板的长边与输送路径的边缘重合；
其中，输送路径指PCB板在被输送机构输送的过程中PCB板整体所经过的范围。
方向识别：其包括如下步骤，
S1、使用X-Ray检测装置对输送路径的特定范围进行检测；
其中输送路径的特定范围指方向正确的PCB板在输送路径上移动时，该PCB板上的标记会经过的范围，即PCB板的正方方向和前后方向都与预设值相同时，该PCB板上的标记会经过的输送路径上的特定范围。
S2、判断是否检测到标记，如果没有检测到标记则表明PCB板方向错误，此时判断PCB板方向错误，如果检测到标记则进入步骤S3；
其中，其中，PCB板上的标记设置于PCB板的长度方向的中心线的左侧或者右侧，则PCB板相对于方向正确的PCB板被左右翻转或者在平面内旋转180°，标记都会偏离原来的位置，因此，如果X-Ray检测装置没有检测到标记，则表明PCB板上的标记未经过设置在输送路径上的特定范围内，PCB板相对于方向正确的PCB板被左右翻转或者在平面内旋转了180°，即判断该PCB板的方向不正确。
S3、判断检测到的标记的形状是否可以与标准图形重合，如果不能重合则表明PCB板的方向错误，此时判断PCB板方向错误；如果检测到的标记的形状可以与标准图形重合，则判断PCB板的方向正确。
其中，PCB板上的标记设置于PCB板的长度方向的中心线的左侧或者右侧，即PCB板上的标记位于输送路径的中心线的左侧或右侧，因此，如果PCB板上的标记经过了输送路径上的特定范围，但是检测到的标记的形状无法与标准形状重合，则表明PCB被前后翻转了，因此该PCB板的正反方向不正确，则判断该PCB板的方向不正确。
本发明通过在PCB板的一个侧面上设置呈非中心对称图形状的标记，结合X-Ray检测装置可以快速地检测出输送机构上的PCB板的方向是否正确，进而可以避免在后续的加工工艺中因PCB板方向错误而产生不良品的情况出现。
另外，本发明的X-Ray检测装置的检测范围为输送路径上的特定范围，即X-Ray检测装置对在输送路径上移动的PCB板进行检测时仅需要覆盖PCB板的部分区域，无需对整块PCB板进行检测，因此本发明可以对面积超出X-Ray检测装置的检测方位的PCB板的方向进行识别。
进一步的，所述标记可以设置在PCB板的内层板上也可以设置在PCB板的表面。
使用X-Ray检测装置对PCB板进行检测可以检测到位于PCB板内部的标记以及位于PCB板的表面的标记，因此可以将标记设置在PCB板的内部以及外表面，进而可以灵活的设置标记的位置以使生产的PCB板能符合客户的要求。
进一步的，所述标记为设置在PCB板上的孔结构。
其中，如果标记设置在PCB板的内层板中，则标记的设置在PCB板压合前进行，如果标记设置在PCB板的外表面上，则标记的设置可以在PCB板压合前进行，也可以在PCB板压合后进行。
进一步的，所述标记为涂覆在PCB板上的颜料形成的图案。
其中，如果标记设置在PCB板的内层板中，则标记的设置在PCB板压合前进行，如果标记设置在PCB板的外表面上，则标记的设置可以在PCB板压合前进行，也可以在PCB板压合后进行。
进一步的，所述标记设置于PCB板上靠近长边的边缘处。
由于PCB板的长边与移送路径的两侧边缘重合，因此PCB板的长边与PCB板的移送方向平行，因此标记位于移送路径的边缘，而标记位于移送路径的边缘便于X-Ray检测装置的设置。
进一步的，所述特定范围位于所述输送路径的中心线的左侧或右侧。
其中，如果方向正确的PCB板的标记位于输送路径的左侧则特定范围位于所述输送路径的中心线的左侧，如果方向正确的PCB板的标记位于输送路径的右侧则特定范围位于所述输送路径的中心线的右侧，其可以X-Ray检测装置不会对位于输送路径的中心线的两侧PCB板同时进行检测，以避免在PCB板相对于方向正确的PCB板左右翻转或者在平面内转动180°后其上的标记依然能被X-Ray检测装置检测到。
 有益效果
本发明通过在PCB板的一个侧面上设置呈非中心对称图形状的标记，结合X-Ray检测装置可以快速地检测出输送机构上的PCB板的方向是否正确，进而可以避免在后续的加工工艺中因PCB板方向错误而产生不良品的情况出现。
另外，本发明的X-Ray检测装置的检测范围为输送路径上的特定范围，即X-Ray检测装置对在输送路径上移动的PCB板进行检测时仅需要覆盖PCB板的部分区域，无需对整块PCB板进行检测，因此本发明可以对面积超出X-Ray检测装置的检测方位的PCB板的方向进行识别。
 本发明的最佳实施方式
一种PCB板方向的识别方法，包括如下步骤：
前处理：在PCB板上根据PCB板的正反方向以及前后方向设置可以标识PCB板的正反方向和前后方向的标记，所述标记设置于所述PCB板的长度方向的中心线的左侧或者右侧，所述标记为设置在PCB板上的非中心对称图形，并将该中心对称图形的形状作为标准图形记录在X-Ray检测装置中；
其中，PCB板的正反方向指PCB板的上表面和下表面的朝向；PCB板的前后方向指PCB板被运输时其沿着被运输的方向的前端和后端的朝向；方向正确的PCB板指被输送机构输送到下一工序的加工设备后，其方向符合加工设备的要求的PCB板。
PCB板的运输：将设置有标记的PCB板放在输送机构上进行运输，输送机构带动PCB板沿着PCB板的输送路径进行移动，其中，PCB板的长边与输送路径的边缘重合；
其中，输送路径指PCB板在被输送机构输送的过程中PCB板整体所经过的范围。
方向识别：其包括如下步骤，
S1、使用X-Ray检测装置对输送路径的特定范围进行检测；
其中输送路径的特定范围指方向正确的PCB板在输送路径上移动时，该PCB板上的标记会经过的范围，即PCB板的正方方向和前后方向都与预设值相同时，该PCB板上的标记会经过的输送路径上的特定范围。
S2、判断是否检测到标记，如果没有检测到标记则表明PCB板方向错误，此时判断PCB板方向错误，如果检测到标记则进入步骤S3；
其中，其中，PCB板上的标记设置于PCB板的长度方向的中心线的左侧或者右侧，则PCB板相对于方向正确的PCB板被左右翻转或者在平面内旋转180°，标记都会偏离原来的位置，因此，如果X-Ray检测装置没有检测到标记，则表明PCB板上的标记未经过设置在输送路径上的特定范围内，PCB板相对于方向正确的PCB板被左右翻转或者在平面内旋转了180°，即判断该PCB板的方向不正确。
S3、判断检测到的标记的形状是否可以与标准图形重合，如果不能重合则表明PCB板的方向错误，此时判断PCB板方向错误；如果检测到的标记的形状可以与标准图形重合，则判断PCB板的方向正确。
其中，PCB板上的标记设置于PCB板的长度方向的中心线的左侧或者右侧，即PCB板上的标记位于输送路径的中心线的左侧或右侧，因此，如果PCB板上的标记经过了输送路径上的特定范围，但是检测到的标记的形状无法与标准形状重合，则表明PCB被前后翻转了，因此该PCB板的正反方向不正确，则判断该PCB板的方向不正确。
本发明通过在PCB板的一个侧面上设置呈非中心对称图形状的标记，结合X-Ray检测装置可以快速地检测出输送机构上的PCB板的方向是否正确，进而可以避免在后续的加工工艺中因PCB板方向错误而产生不良品的情况出现。
另外，本发明的X-Ray检测装置的检测范围为输送路径上的特定范围，即X-Ray检测装置对在输送路径上移动的PCB板进行检测时仅需要覆盖PCB板的部分区域，无需对整块PCB板进行检测，因此本发明可以对面积超出X-Ray检测装置的检测方位的PCB板的方向进行识别。
其中一种实施例，所述标记可以设置在PCB板的内层板上也可以设置在PCB板的表面。
使用X-Ray检测装置对PCB板进行检测可以检测到位于PCB板内部的标记以及位于PCB板的表面的标记，因此可以将标记设置在PCB板的内部以及外表面，进而可以灵活的设置标记的位置以使生产的PCB板能符合客户的要求。
其中一种实施例，所述标记为设置在PCB板上的孔结构。
其中，如果标记设置在PCB板的内层板中，则标记的设置在PCB板压合前进行，如果标记设置在PCB板的外表面上，则标记的设置可以在PCB板压合前进行，也可以在PCB板压合后进行。
其中一种实施例，所述标记为涂覆在PCB板上的颜料形成的图案。
其中，如果标记设置在PCB板的内层板中，则标记的设置在PCB板压合前进行，如果标记设置在PCB板的外表面上，则标记的设置可以在PCB板压合前进行，也可以在PCB板压合后进行。
其中一种实施例，所述标记设置于PCB板上靠近长边的边缘处。
由于PCB板的长边与移送路径的两侧边缘重合，因此PCB板的长边与PCB板的移送方向平行，因此标记位于移送路径的边缘，而标记位于移送路径的边缘便于X-Ray检测装置的设置。
其中一种实施例，所述特定范围位于所述输送路径的中心线的左侧或右侧。
其中，如果方向正确的PCB板的标记位于输送路径的左侧则特定范围位于所述输送路径的中心线的左侧，如果方向正确的PCB板的标记位于输送路径的右侧则特定范围位于所述输送路径的中心线的右侧，其可以X-Ray检测装置不会对位于输送路径的中心线的两侧PCB板同时进行检测，以避免在PCB板相对于方向正确的PCB板左右翻转或者在平面内转动180°后其上的标记依然能被X-Ray检测装置检测到。
以上实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。
 工业实用性
本发明可以快速地对PCB板的方向进行识别。

Claims (6)

  1. 一种PCB板方向的识别方法，其特征在于，包括如下步骤：前处理：在PCB板上根据PCB板的正反方向以及前后方向设置可以标识PCB板的正反方向和前后方向的标记，所述标记设置于所述PCB板的长度方向的中心线的左侧或者右侧，所述标记为设置在PCB板上的非中心对称图形，并将该中心对称图形的形状作为标准图形记录在X-Ray检测装置中；PCB板的运输：将设置有标记的PCB板放在输送机构上进行运输，输送机构带动PCB板沿着PCB板的输送路径进行移动，其中，PCB板的长边与输送路径的边缘重合； 方向识别：其包括如下步骤，S1、使用X-Ray检测装置对输送路径的特定范围进行检测；S2、判断是否检测到标记，如果没有检测到标记则表明PCB板方向错误，此时判断PCB板方向错误，如果检测到标记则进入步骤S3；S3、判断检测到的标记的形状是否可以与标准图形重合，如果不能重合则表明PCB板的方向错误，此时判断PCB板方向错误；如果检测到的标记的形状可以与标准图形重合，则判断PCB板的方向正确。
  2. 根据权利要求1所述的PCB板方向的识别方法，其特征在于，所述标记可以设置在PCB板的内层板上也可以设置在PCB板的表面。
  3. 根据权利要求2所述的PCB板方向的识别方法，其特征在于，所述标记为设置在PCB板上的孔结构。
  4. 根据权利要求2所述的PCB板方向的识别方法，其特征在于，所述标记为涂覆在PCB板上的颜料形成的图案。
  5. 根据权利要求1所述的PCB板方向的识别方法，其特征在于，所述标记设置于PCB板上靠近长边的边缘处。
  6. 根据权利要求1所述的PCB板方向的识别方法，其特征在于，所述特定范围位于所述输送路径的中心线的左侧或右侧。
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