CN109704013B - PCB board detection mechanism - Google Patents
PCB board detection mechanism Download PDFInfo
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- CN109704013B CN109704013B CN201910170808.7A CN201910170808A CN109704013B CN 109704013 B CN109704013 B CN 109704013B CN 201910170808 A CN201910170808 A CN 201910170808A CN 109704013 B CN109704013 B CN 109704013B
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- conveying mechanism
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- receiving device
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- product conveying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/52—Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices
- B65G47/64—Switching conveyors
- B65G47/641—Switching conveyors by a linear displacement of the switching conveyor
- B65G47/643—Switching conveyors by a linear displacement of the switching conveyor in a vertical plane
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/02—Articles
- B65G2201/0214—Articles of special size, shape or weigh
- B65G2201/022—Flat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/04—Detection means
- B65G2203/042—Sensors
- B65G2203/044—Optical
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Mechanical Engineering (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The invention discloses a PCB detection mechanism which is characterized by comprising a first horizontal conveying mechanism, an X-ray lamp tube positioned below the horizontal conveying mechanism, a detector positioned above the first horizontal conveying mechanism, a receiving device, a lifting mechanism, a qualified product conveying mechanism and a defective product conveying mechanism. The invention is provided with a receiving device, a qualified product conveying mechanism and a defective product conveying mechanism, when a workpiece is detected on the horizontal conveying mechanism, the receiving device is moved on the receiving device, the receiving device descends until the part of the workpiece is contacted with both the qualified product conveying mechanism and the defective product conveying mechanism, and at the moment, the detector controls the qualified product conveying mechanism or the defective product conveying mechanism to work according to the detection result, so that the workpiece on the receiving device is moved away to realize automatic sorting, thereby effectively solving the problems in the prior art.
Description
Technical Field
The invention relates to a PCB detection mechanism.
Background
The PCB printer is a semi-finished product which utilizes the characteristic of laser ablation to ablate a coating which is covered on the surface of a PCB in advance according to a negative film of PCBLayout, thereby keeping a positive film as a semi-finished product before corrosion.
After the PCB is printed, the PCB is generally required to be detected, the PCB is detected by penetrating the PCB through X rays and acquiring images on a special imaging sensor, so that the PCB is seen through, and the problem of packaging quality control of elements such as BGA (ball grid array), CSP (chip scale package) and the like is solved. The AXI can be designed into two types of 2D/3D according to requirements, because the welding spot contains an alloy of lead and tin which can absorb X-rays in a large amount, compared with the X-rays which penetrate through glass fiber, copper, silicon and other materials, the X-rays irradiated on the welding spot are absorbed in a large amount to form a black image, and then the welding spot defect can be automatically detected through an image analysis calculation method.
The qualified products and the defective products of the PCB are required to be sorted according to the detection result after the detection of the PCB is completed, the manual operation is completed in the prior art, the automation degree is low, and the efficiency is poor.
Disclosure of Invention
The invention aims to provide a PCB detection device capable of realizing automatic sorting after detection.
In order to solve the above problem, the present invention provides a PCB detecting mechanism, comprising:
the first horizontal conveying mechanism is used for conveying the workpiece along a horizontal straight line;
the X-ray lamp tube is positioned below the horizontal conveying mechanism and can emit X rays to the workpiece right above the X-ray lamp tube;
the detector is positioned above the first horizontal conveying mechanism and can receive X-rays emitted by the X-ray lamp tube and judge whether the workpiece is qualified or not according to the X-ray imaging condition;
the receiving device is positioned on one side of the stroke end point of the first horizontal conveying mechanism, and a first gap which is smaller than the length of the workpiece is arranged between the receiving device and the first horizontal conveying mechanism;
the lifting mechanism is used for driving the receiving device to do lifting motion at a first height and a second height, the first height is the height of the first horizontal conveying mechanism, and the second height is positioned below the first height;
and when the detector detects that the workpiece is defective, the defective product conveying mechanism is controlled to be started in a delayed manner, and the workpiece on the receiving device and in partial contact with the receiving device is taken away.
As a further improvement of the present invention, the first horizontal conveyance mechanism is provided with:
two first chain wheels located at the same horizontal height;
the auxiliary chain wheel is positioned below the first chain wheel, and the height difference between the auxiliary chain wheel and the first chain wheel is enough for placing the X-ray lamp tube;
a first tensioning belt for tensioning on both of the first sprockets and the auxiliary sprocket.
As a further improvement of the present invention, the acceptable product conveying mechanism and the defective product conveying mechanism are symmetrically arranged along a horizontal central axis of the first horizontal conveying mechanism, a second gap is arranged between the acceptable product conveying mechanism and the defective product conveying mechanism, and the receiving device is located in the second gap, and the second gap is smaller than the width dimension of the workpiece.
As a further improvement of the present invention, the non-defective product conveying mechanism and the defective product conveying mechanism each include:
two second chain wheels which are positioned on the same horizontal level, wherein at least one of the second chain wheels is driven by a motor to rotate;
a second tensioning belt tensioned between the two second sprockets.
As a further improvement of the invention, the workpiece conveying device further comprises a fixed plate positioned on one side of the stroke end point of the first horizontal conveying mechanism, a third gap which is larger than the length of the workpiece is formed between the fixed plate and the first horizontal conveying mechanism, the receiving device is positioned between the first horizontal conveying mechanism and the fixed plate, the fixed plate is connected with a sliding block in a sliding mode along the vertical direction of the fixed plate, and the receiving device is connected to the sliding block through a horizontal spring.
As a further development of the invention, the receiving device comprises a receiving plate of a horizontal plate-like structure and a limit stop connected vertically above the receiving plate for limiting the maximum travel of the workpiece on the receiving plate.
As a further improvement of the invention, the upper surface of the bearing plate is provided with at least two columnar rollers which are mutually contacted, wherein at least one roller is driven to rotate by a driving mechanism.
The invention has the beneficial effects that the invention is provided with the receiving device, the qualified product conveying mechanism and the defective product conveying mechanism, when the workpiece is detected on the horizontal conveying mechanism, the receiving device is moved to the receiving device, the receiving device descends until the workpiece part is contacted with both the qualified product conveying mechanism and the defective product conveying mechanism, and the detector controls the qualified product conveying mechanism or the defective product conveying mechanism to work according to the detection result, so that the workpiece on the receiving device is moved away to realize automatic sorting, and the problems in the prior art are effectively solved.
Drawings
FIG. 1 is a top view of the present invention;
FIG. 2 is a schematic view of the structure A-A in FIG. 1.
Wherein: 100-a workpiece; 2-a horizontal conveying mechanism; 4-X-ray lamp tube; 6-a detector; 8-a receiving device; 10-a lifting mechanism; 12-qualified product conveying mechanism; 14-a defective product conveying mechanism; 16-a first sprocket; 18-an auxiliary sprocket; 20-a first tensioning band; 22-a second sprocket; 24-a second tensioning belt; 26-fixing plate; 28-horizontal spring; 29-a slide block; 30-bearing plates; 32-a limit baffle; 34-roller.
Detailed Description
The following describes in further detail embodiments of the present invention.
As shown in fig. 1-2, the present invention comprises:
a first horizontal conveyance mechanism 2 for conveying the workpiece 100 along a horizontal straight line;
an X-ray lamp tube 4 positioned below the horizontal conveying mechanism, wherein the X-ray lamp tube 4 can emit X-rays to the workpiece 100 directly above the X-ray lamp tube 4;
the detector 6 is positioned above the first horizontal conveying mechanism 2, and the detector 6 can receive the X-rays emitted by the X-ray lamp tube 4 and judge whether the workpiece 100 is qualified or not according to the X-ray imaging condition;
the receiving device 8 is positioned on one side of the stroke end point of the first horizontal conveying mechanism 2, and a first gap which is smaller than the length of the workpiece 100 is arranged between the receiving device 8 and the first horizontal conveying mechanism 2;
the lifting mechanism 10 is used for driving the receiving device 8 to do lifting motion at a first height and a second height, the first height is the height of the first horizontal conveying mechanism 2, and the second height is positioned below the first height;
and when the receiving device 8 moves to the second height, the qualified product conveying mechanism 12 and the defective product conveying mechanism 14 which are positioned on the receiving device 8 can be in partial contact with the qualified product conveying mechanism 12 and the defective product conveying mechanism 14 at the same time, the qualified product conveying mechanism 12 and the defective product conveying mechanism 14 are both in communication connection with the detector 6, when the detector 6 detects that the workpiece 100 is a qualified product, the qualified product conveying mechanism 12 is controlled to be started in a delayed mode, so that the workpiece 100 on the receiving device 8 and in partial contact with the receiving device 8 is taken away, and when the detector 6 detects that the workpiece 100 is a defective product, the defective product conveying mechanism 14 is controlled to be started in a delayed mode, and the workpiece 100 on the receiving device 8 and in partial contact with the receiving device is taken away.
As a further improvement of the present invention, the first horizontal conveyance mechanism 2 is provided with:
two first sprockets 16 located at the same level;
an auxiliary chain wheel 18 positioned below the first chain wheel 16, wherein the height difference between the auxiliary chain wheel 18 and the first chain wheel 16 is enough for placing the X-ray lamp tube 4;
for tensioning a first tensioning belt 20 on both the first sprocket 16 and the auxiliary sprocket 18.
As a further improvement of the present invention, the non-defective product conveying mechanism 12 and the defective product conveying mechanism 14 are symmetrically arranged along the horizontal central axis of the first horizontal conveying mechanism 2 with a second gap therebetween, and the receiving device 8 is located in the second gap, which is smaller than the width dimension of the workpiece 100.
As a further improvement of the present invention, the non-defective product conveying mechanism 12 and the defective product conveying mechanism 14 each include:
two second chain wheels 22 positioned on the same horizontal level, wherein at least one second chain wheel 22 is driven by a motor to rotate;
a second tensioning belt 24 is tensioned between the two second sprockets 22.
As a further improvement of the present invention, the present invention further comprises a fixed plate 26 located on the side of the stroke end of the first horizontal conveying mechanism 2, the fixed plate 26 and the first horizontal conveying mechanism 2 are provided with a third gap larger than the length of the workpiece 100, the receiving device 8 is located between the first horizontal conveying mechanism 2 and the fixed plate 26, the fixed plate 26 is slidably connected with a slide block 29 along the vertical direction thereof, and the receiving device 8 is connected with the slide block 29 through a horizontal spring 28.
As a further improvement of the present invention, the receiving device 8 includes a receiving plate 30 having a horizontal plate-like structure and a limit stop 32 vertically connected above the receiving plate 30, wherein the limit stop 32 is used for limiting the maximum stroke of the workpiece 100 on the receiving plate 30.
As a further improvement of the present invention, the upper surface of the receiving plate 30 is provided with at least two rollers 34 which are cylindrical and contact with each other, wherein at least one of the rollers 34 is driven to rotate by a driving mechanism.
The specific principle of the invention is as follows:
(1) the first chain wheel 16 is driven by a motor to rotate, so that the first tensioning belt 20 is driven to move horizontally, and the workpiece 100 is placed on the first tensioning belt 20 and moves along with the first tensioning belt 20;
(2) when the workpiece 100 moves to a position right below the X-ray lamp 4, the X-ray emitted from the X-ray lamp irradiates the workpiece 100, since the solder of the workpiece 100 contains an alloy of lead and tin that can absorb X-rays in a large amount, X-rays irradiated on the solder are absorbed in a large amount as compared with X-rays passing through other materials such as glass fiber, copper, silicon, etc., to form a black image, then the detector 6 can automatically detect the welding spot defects through an image analysis calculation method, the detector 6 is in communication connection with the qualified product conveying mechanism 12 and the defective product conveying mechanism 14, and controlling the qualified product conveying mechanism 12 to start in a delayed manner when the qualified product is a qualified product, and controlling the defective product conveying mechanism 14 to start in a delayed manner when the qualified product is an unqualified product (the delay time is longer than the time taken for the workpiece 100 to be transferred onto the receiving device 8 and to descend from the receiving device 8 to enable the workpiece 100 to be in contact with both the qualified product conveying mechanism 12 and the defective product conveying mechanism 14).
(3) The workpiece 100 moves continuously along with the first tensioning belt 20 to the end of the stroke, and moves continuously forwards, and then the workpiece 100 is contacted with the roller 34, the roller 34 rotates and the first tensioning belt 20 moves, so that the workpiece 100 finally falls completely onto the receiving plate 30, and the tail end of the receiving plate 30 is provided with a limit baffle 32 for stopping the horizontal movement of the workpiece 100;
(4) subsequently, the lifting device drives the workpiece 100 to move to ascend with the qualified product conveying mechanism 12 and the defective product conveying mechanism 14 and respectively contact with the second tensioning belts 24 on the qualified product conveying mechanism 12 and the defective product conveying mechanism 14;
(5) due to the control of the detector 6, the qualified product conveying mechanism 12 or the defective product conveying mechanism 14 works by driving the corresponding second chain wheel 22 to rotate by the motor, so as to drive the second tensioning belt 24 to move, and thus the workpiece 100 on the bearing plate 30 is moved away.
(6) Thereafter the elevator apparatus is raised to the first height, awaiting a new workpiece 100, and so on.
(7) The lifting mechanism 10 rotates according to the weight of the workpiece 100, when the workpiece 100 is heavy, the lifting mechanism 10 adopts an oil cylinder, so that sufficient supporting force is provided conveniently, and when the workpiece 100 is light, an air cylinder is selected, so that the workpiece has quicker moving speed.
The above embodiment is only one embodiment of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. A PCB board detection mechanism, characterized by includes:
a horizontal conveying mechanism (2) for conveying the workpiece (100) along a horizontal straight line;
the X-ray lamp tube (4) is positioned below the horizontal conveying mechanism (2), and the X-ray lamp tube (4) can emit X rays to the workpiece (100) right above the X-ray lamp tube;
the detector (6) is positioned above the horizontal conveying mechanism (2), and the detector (6) can receive X-rays emitted by the X-ray lamp tube (4) and judge whether the workpiece is qualified or not according to the X-ray imaging condition;
the receiving device (8) is positioned on one side of the stroke end point of the horizontal conveying mechanism (2), and a first gap smaller than the length of the workpiece (100) is formed between the receiving device (8) and the horizontal conveying mechanism (2);
the lifting mechanism (10) is used for driving the receiving device (8) to do lifting motion at a first height and a second height, the first height is the height of the horizontal conveying mechanism (2), and the second height is positioned below the first height;
a non-defective product conveying mechanism (12) and a defective product conveying mechanism (14) which are positioned on the second height, when the receiving device (8) moves to a second height, the workpiece (100) on the receiving device (8) can be simultaneously partially contacted with the qualified product conveying mechanism (12) and the defective product conveying mechanism (14), the qualified product conveying mechanism (12) and the defective product conveying mechanism (14) are in communication connection with the detector (6), when the detector (6) detects that the workpiece is a qualified product, the qualified product conveying mechanism (12) is controlled to start in a delayed manner, so as to remove the workpiece (100) on the receiving device (8) and in partial contact therewith, when the detector (6) detects that the workpiece is a defective product, the defective product conveying mechanism (14) is controlled to be started in a delayed mode, and the workpiece (100) on the receiving device (8) and in partial contact with the receiving device is taken away.
2. The PCB detecting mechanism according to claim 1, wherein the horizontal conveying mechanism (2) is provided with:
two first chain wheels (16) located at the same horizontal level;
an auxiliary chain wheel (18) positioned below the first chain wheel (16), wherein the height difference between the auxiliary chain wheel (18) and the first chain wheel (16) is enough for placing the X-ray lamp (4);
a first tensioning belt (20) for tensioning on both the first sprockets (16) and the auxiliary sprocket (18).
3. The PCB detecting mechanism of claim 2, wherein the qualified product conveying mechanism (12) and the defective product conveying mechanism (14) are symmetrically arranged along a horizontal central axis of the horizontal conveying mechanism (2), and a second gap is arranged between the qualified product conveying mechanism and the defective product conveying mechanism, and the receiving device (8) is positioned in the second gap, and the second gap is smaller than the width dimension of the workpiece (100).
4. The PCB board detection mechanism according to claim 3, wherein the qualified product conveying mechanism (12) and the defective product conveying mechanism (14) each comprise:
two second chain wheels (22) positioned on the same horizontal level, wherein at least one second chain wheel (22) is driven by a motor to rotate;
a second tension belt (24) tensioned between the two second sprockets (22).
5. The PCB detecting mechanism according to claim 4, further comprising a fixing plate (26) located at one side of the stroke end of the horizontal conveying mechanism (2), wherein the fixing plate (26) and the horizontal conveying mechanism (2) are provided with a third gap larger than the length of the workpiece (100), the receiving device (8) is located between the horizontal conveying mechanism (2) and the fixing plate (26), the fixing plate (26) is slidably connected with a sliding block (29) along the vertical direction, and the receiving device (8) is connected with the sliding block (29) through a horizontal spring (28).
6. A PCB detection mechanism according to claim 5, characterized in that the receiving device (8) comprises a receiving plate (30) with a horizontal plate-like structure and a limit stop (32) vertically connected above the receiving plate (30), the limit stop (32) is used for limiting the maximum stroke of the workpiece (100) on the receiving plate (30).
7. The PCB detecting mechanism according to claim 6, wherein the upper surface of the receiving plate (30) is provided with at least two rollers (34) which are cylindrical and contact with each other, wherein at least one of the rollers (34) is driven to rotate by a driving mechanism.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018103043990 | 2018-04-08 | ||
| CN201810304399.0A CN108298277A (en) | 2018-04-08 | 2018-04-08 | A kind of pcb board testing agency |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109704013A CN109704013A (en) | 2019-05-03 |
| CN109704013B true CN109704013B (en) | 2021-06-08 |
Family
ID=62847039
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810304399.0A Withdrawn CN108298277A (en) | 2018-04-08 | 2018-04-08 | A kind of pcb board testing agency |
| CN201910170808.7A Active CN109704013B (en) | 2018-04-08 | 2019-03-07 | PCB board detection mechanism |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810304399.0A Withdrawn CN108298277A (en) | 2018-04-08 | 2018-04-08 | A kind of pcb board testing agency |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN108298277A (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1256148B (en) * | 1992-09-18 | 1995-11-29 | Alcatel Italia | MODULAR SORTING UNIT FOR CONVEYOR SYSTEMS |
| US6264042B1 (en) * | 1999-11-15 | 2001-07-24 | United Parcel Service Of America, Inc. | Bilateral sorter |
| CN201244561Y (en) * | 2008-07-18 | 2009-05-27 | 东莞市世通国际快件监管中心有限公司 | System for sorting and delivering express |
| CN202548066U (en) * | 2012-04-21 | 2012-11-21 | 陈丹青 | Printing product quality detecting machine |
| CN202725515U (en) * | 2012-07-04 | 2013-02-13 | 江苏亚振家具有限公司 | Equipment for automatically detecting moisture content of wood and sorting wood |
| CN103706575B (en) * | 2013-12-31 | 2015-12-30 | 江苏大学 | A kind of online classification sorting equipment of eyeglass based on two-stage image collection and method |
| CN104444315A (en) * | 2014-11-28 | 2015-03-25 | 苏州晟成光伏设备有限公司 | 90-degree direction-changing device for solar panels |
| CN206872064U (en) * | 2017-05-17 | 2018-01-12 | 天津市宝坻区和泰丰食用菌有限公司 | A kind of automatic stacking device |
-
2018
- 2018-04-08 CN CN201810304399.0A patent/CN108298277A/en not_active Withdrawn
-
2019
- 2019-03-07 CN CN201910170808.7A patent/CN109704013B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108298277A (en) | 2018-07-20 |
| CN109704013A (en) | 2019-05-03 |
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Effective date of registration: 20221222 Address after: 223400 No. 17 Plant of China Electronics Industrial Park Development (Lianshui) Co., Ltd., Xingsheng Road, Lianshui Economic Development Zone, Huai'an City, Jiangsu Province Patentee after: Jiangsu xingzhisheng Circuit Technology Co.,Ltd. Address before: Room 1305, Liancai business center, 18 Chunxu Road, Kunshan Development Zone, Suzhou City, Jiangsu Province Patentee before: KUNSHAN MULI MACHINERY DESIGN Co.,Ltd. |
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