CN117054862B - Precise detection equipment and detection process for PCB main board - Google Patents
Precise detection equipment and detection process for PCB main board Download PDFInfo
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- CN117054862B CN117054862B CN202311328173.1A CN202311328173A CN117054862B CN 117054862 B CN117054862 B CN 117054862B CN 202311328173 A CN202311328173 A CN 202311328173A CN 117054862 B CN117054862 B CN 117054862B
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- 238000001514 detection method Methods 0.000 title claims abstract description 165
- 238000000034 method Methods 0.000 title claims description 17
- 230000008569 process Effects 0.000 title claims description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 230000001360 synchronised effect Effects 0.000 claims description 27
- 239000000523 sample Substances 0.000 claims description 25
- 238000001179 sorption measurement Methods 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 12
- 238000007689 inspection Methods 0.000 claims 6
- 238000004140 cleaning Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007790 scraping Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/2806—Apparatus therefor, e.g. test stations, drivers, analysers, conveyors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/2806—Apparatus therefor, e.g. test stations, drivers, analysers, conveyors
- G01R31/2808—Holding, conveying or contacting devices, e.g. test adapters, edge connectors, extender boards
Abstract
The invention relates to the field of PCB main board detection, and discloses a precise detection device for a PCB main board, which comprises a frame, wherein a traction mechanism, a detection mechanism and an output member are arranged on the frame.
Description
Technical Field
The invention relates to the field of PCB main board detection, in particular to a precise detection device and a detection process of a PCB main board.
Background
Along with the development of modern electronic components toward miniaturization and integration, a main board is gradually developed toward miniaturization and integration, and various circuits, electronic elements and the like are densely distributed on the main board.
After the mainboard is produced, the power-on detection is needed to detect whether the mainboard is qualified, the common detection technology is probe detection, when the miniaturized mainboard is detected, because circuits, electronic elements and the like on the miniaturized mainboard are densely distributed, the spare area of the side is very tiny, and the side cannot be clamped, the mainboard is generally accurately placed at a preset position on a detection table during detection, then the probe moves downwards, the mainboard is subjected to power-on detection, and the detection mode is feasible for a single-sided mainboard, but has a plurality of defects for a double-sided mainboard: 1. when the circuits and the electronic elements are detected by the probes, the probes need to be in close contact with the circuits and the electronic elements on the upper end surface of the main board, so that the circuits and the electronic elements on the lower end surface of the main board are extruded and are easy to damage, the heights of the electronic elements are different, and the main board is easy to shift to position and influence the detection; 2. when the double-sided main board is detected, the turnover is needed, and the detection is carried out on the two sides, so that the detection effect is low; 3. after detection, the front and back sides of the double-sided main board are required to be distinguished for subsequent use, so that the front and back sides of the double-sided main board are required to be detected and turned over by using a manual or mechanical technology, the double-sided main board is complex, and the production efficiency is delayed.
Based on the above, the invention provides a precise detection device and a detection process for a PCB main board.
Disclosure of Invention
In order to solve the problems mentioned in the background, the invention provides a precise detection device and a detection process of a PCB main board.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.
The precise detection equipment for the PCB main board comprises a frame, wherein a traction mechanism, a detection mechanism and an output member are arranged on the frame, and the traction mechanism is used for dragging the PCB main board to be positioned in a detection area of the detection mechanism in a vertical state;
the detection mechanism comprises a saddle, a linear module five for driving the saddle to move along the vertical direction, a sliding support arranged on the frame in a sliding manner along the horizontal direction, and a linear module six for driving the sliding support to move, wherein the sliding support is provided with a detection support in a sliding manner along the horizontal direction, the sliding direction of the detection support is perpendicular to the sliding direction of the sliding support, two groups of detection supports are arranged along the sliding direction of the detection support, and the sliding support is also provided with a linear module seven for driving the two groups of detection supports to be close to or far away from each other;
the detection support is provided with a detection unit, and the detection unit is used for realizing double-sided synchronous detection of the PCB main board and is used for carrying out air supporting on the PCB main board from two sides of the PCB main board;
the output member includes a conveyor belt disposed obliquely on the frame and having a height lower than the detection unit.
Further, the detection unit comprises a connecting seat group and detection elements, the detection elements in the detection units on the two groups of detection brackets are arranged in opposite directions, and the detection elements comprise a detection substrate and a plurality of probes arranged on the detection substrate.
Further, the connecting seat group comprises a first connecting seat and a second connecting seat which are connected with each other, the first connecting seat is connected with the detection support, an air groove is formed in one side, away from the detection element, of the first connecting seat, a groove cover is arranged at the notch of the air groove, a nozzle is arranged on the groove cover, an air hole is formed in the bottom of the air groove, a connecting pipe is arranged at the tail end of the nozzle, and the tail end of the connecting pipe is communicated with the air compressor;
the second connecting seat is positioned on one side of the first connecting seat, which faces the detection element, the large surface of the second connecting seat is provided with a second air hole, the second air hole is communicated with the first air hole through a connecting channel arranged on the second connecting seat, the orifice of the second air hole, which deviates from the first connecting seat, extends to form an air pipeline, and the tail end of the air pipeline is communicated with a third air hole arranged on the detection substrate.
Further, the third air hole is provided with a plurality of groups on the detection substrate, and the air pipeline, the second air hole, the connecting channel and the first air hole are correspondingly provided with a plurality of groups;
the nozzle and the air groove are coaxial, a plurality of groups of air holes are distributed in an array mode along the circumferential direction of the air groove, the lengths of the connecting channels of each group are consistent, and the lengths of the connecting pipes are consistent.
Further, the air pipeline comprises a spherical section, a first connecting section for communicating the spherical section with the air hole II, and a second connecting section for communicating the spherical section with the air hole III, an inner cylinder is coaxially arranged in the air pipeline, and one end of the inner cylinder extends into the air hole III.
Further, the traction mechanism comprises a stacking member, a first traction member and a second traction member, wherein the stacking member is used for orderly stacking a plurality of PCB mainboards along the vertical direction, the first traction member is used for dragging the PCB mainboards on the stacking member to be vertically arranged, and the second traction member is used for dragging the PCB mainboards which are vertically arranged to move between two groups of detection units.
Further, the first traction component comprises an arc-shaped rack which is slidably arranged on the rack, a gear meshed with the arc-shaped rack, and a first motor which is in power connection with the gear, wherein the upper end of the arc-shaped rack is provided with an adsorption head.
Further, the second traction member comprises two groups of mounting brackets which are arranged on the frame in a sliding manner along the vertical direction and a linear module IV for driving the two groups of mounting brackets to be close to or far away from each other, a clamping seat is arranged on the mounting brackets in a sliding manner along the sliding direction of the movable bracket, and a synchronous belt group is also arranged on the mounting brackets and connected with the clamping seat;
the transmission shaft is arranged vertically, the motor II is used for driving the transmission shaft to rotate, the input end of the synchronous belt group is in power connection with the transmission shaft through a spline, and when the synchronous belt group moves along with the mounting bracket, the transmission shaft continuously outputs power to the synchronous belt group through the spline;
the opposite sides of the two groups of clamping seats are provided with clamping grooves which are in the shape of isosceles trapezoid grooves.
A detection process of a precise detection device of a PCB main board comprises the following steps:
step one: a plurality of PCB main boards are orderly piled on the piling component along the vertical direction through the piling component;
step two: the uppermost PCB main board in the stacking member is switched from horizontal arrangement to vertical arrangement through the first traction member;
step three: the PCB main board which is vertically arranged is moved between the two groups of detection units through the second traction component;
step four: the straight line module five drives the supporting platform to move upwards, so that the upper end face of the supporting platform is contacted with the lower end face of the PCB main board, the PCB main board is supported from the lower side, meanwhile, compressed air is sequentially blown to the PCB main board through the connecting pipe, the connector, the air groove, the air hole I, the connecting channel, the air hole II, the air pipe and the air hole III, the two air flows are used for carrying out air supporting on the PCB main board from two sides, and the air supporting is used for carrying out surface cleaning on the PCB main board;
step five: the traction mechanism releases the limit on the PCB main board;
the linear module seven drives the two groups of detection brackets to be mutually close to each other, so that probes of the detection element are contacted with the PCB main board, after the contact is completed, the air support is withdrawn, and the PCB main board is electrified and detected through the probes;
step six: after the detection is completed, the linear module six drives the sliding support to move, and the PCB main board supported by the probe is driven to move to the upper part of the output component;
the support is started by the air, the two groups of detection supports are mutually far away by the seven linear modules, the PCB main board is kept in a vertical state to leave the area between the two groups of detection units, then falls onto the output component to be pulled and output, and the upward surface of the PCB main board is consistent during each output.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the scheme, the PCB main board is supported from the lower part through the supporting table, two airflows respectively positioned at two sides of the PCB main board support the PCB main board from two sides in a gas-supported manner, so that the PCB main board is kept vertically arranged between two groups of detection units, and then, the PCB main board is subjected to double-sided synchronous detection through the probes, so that the detection efficiency is effectively improved;
on the basis of the method, the device comprises the following steps:
1. the connecting nozzle and the air groove are coaxial, a plurality of groups of air holes I are distributed along the circumferential direction of the air groove, the lengths of the connecting channels of each group are consistent, and the lengths of the connecting pipes are consistent;
2. the inside of the air pipeline is coaxially provided with an inner cylinder, one end of the inner cylinder extends into the air hole III, the air pipeline has the significance that the section of the air flow blown to the PCB main board through the air hole III is in a circular ring shape, if not, the air flow is in a circular shape, so that the air support is concentrated at one point, and in the scheme, the section of the air flow is in a circular ring shape, the air support is uniformly dispersed along the circumferential direction, the point support concentrated at one point is changed into a uniformly dispersed line support, and under the same condition, the effect of the air support is better;
3. after detection, the PCB main board moves to the upper part of the output component, then the air support is started, and then the PCB main board is loosened, and the air support is started, so that the PCB main board can be kept to be vertically arranged and fall downwards, and leaves the area between the two groups of detection units, the PCB main board and the probes can not be contacted, and the phenomenon of scraping does not exist, if the air support is not opened, the PCB main board is likely to deviate to two sides in the downward falling process, and contacts with the probes, and the scraping exists between the PCB main board and the probes when the PCB main board falls, so that the PCB main board and the probes are easily damaged;
4. the output component is a conveying belt obliquely arranged on the frame, and has the significance that under the action of the air supporting support, the PCB main board is vertically arranged and falls downwards, so after the bottom of the PCB main board contacts with the conveying belt, the bottom of the PCB main board actively deviates towards one side of the lowest point of the conveying belt due to the obliquely arranged conveying belt, and therefore, the upward faces of the PCB main board are consistent in each detection and output process, that is, the front and back sides of the PCB main board are distinguished, and the PCB main board is not required to be distinguished in the follow-up process.
2. In this scheme, traction mechanism drives the PCB mainboard and is vertical arrangement and remove to between two sets of detecting element through biax realization, and biax refers to: the rotation of the curved rack and the movement of the holder are easily conceivable by the person skilled in the art: the technical means such as the mechanical arm is utilized to pull the adsorption structure to move and contact with the PCB main board on the stacking member, after negative pressure adsorption is good, the PCB main board is pulled to be vertically arranged, then, the technical means such as the mechanical arm is utilized to pull the clamping structure to move to the vicinity of the vertically arranged PCB main board, after clamping, the PCB main board is pulled to move to the detection area again, that is, four-axis linkage is easily thought of to realize driving the PCB main board to be vertically arranged and move to between two groups of detection units, in the scheme, double-axis linkage can be realized, the efficiency is higher, and the action is simpler.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a second embodiment of the present invention;
FIG. 3 is a schematic structural view of a traction mechanism;
FIG. 4 is a schematic view of a palletizing member;
FIG. 5 is a schematic view of a traction member one;
FIG. 6 is a schematic view of a traction member II;
FIG. 7 is a schematic view of a cartridge;
FIG. 8 is a schematic diagram of a detection mechanism;
FIG. 9 is a schematic diagram of a detection unit;
FIG. 10 is an exploded view of the detection unit;
FIG. 11 is a cross-sectional view of an air duct;
fig. 12 is a schematic view of an output member.
The reference numerals in the drawings are:
100. a traction mechanism; 110. a palletizing member; 111. a first linear module; 112. a support table; 113. a movable bracket; 114. a second linear module; 115. a movable seat; 116. a linear module III; 117. a positioning plate; 120. a first traction member; 121. a first motor; 122. a gear; 123. an arc-shaped rack; 124. an adsorption head; 130. a traction member II; 131. a mounting bracket; 132. a straight line module IV; 133. a clamping seat; 1331. a clamping groove; 134. a second motor; 135. a transmission shaft; 136. a synchronous band group; 200. a detection mechanism; 201. a support; 202. a straight line module five; 203. a sliding support; 204. a straight line module six; 205. detecting a bracket; 206. a straight line module seven; 207. a connecting pipe; 208. a detection unit; 209. a second connecting seat; 2091. an air hole II; 2092. a connection channel; 210. a first connecting seat; 2101. an air tank; 2102. an air hole I; 2103. a slot cover; 2104. a nozzle; 211. an air duct; 2111. a spherical segment; 2112. a first connecting section; 2113. a second connecting section; 2114. an inner cylinder; 212. a detection element; 300. an output member.
Detailed Description
In order to further describe the technical means and effects adopted by the present invention for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present invention with reference to the accompanying drawings and preferred embodiments.
In this scheme, the PCB mainboard to the detection is two-sided mainboard.
Referring to fig. 1-12, a precise detection device for a PCB main board includes a frame, on which a traction mechanism 100, a detection mechanism 200 and an output member 300 are mounted, wherein the traction mechanism 100 is used for traction of the PCB main board in a vertical state in a detection area of the detection mechanism 200, the detection mechanism 200 is used for double-sided synchronous detection of the PCB main board, and before detection, dust cleaning treatment can be performed on the PCB main board, the output member 300 is used for traction of the PCB main board after detection is output outwards, and in each output process, the upward sides of the PCB main board are kept consistent, that is, front and back sides of the PCB main board are distinguished, and no distinction is required to be performed subsequently.
Example 1
Referring to fig. 8-11, the detection mechanism 200 includes a gantry 201 and a linear module five 202 for driving the gantry 201 to move in a vertical direction.
The detection mechanism 200 further comprises a sliding support 203 which is slidably mounted on the rack along the horizontal direction and a linear module six 204 for driving the sliding support 203 to move, the sliding support 203 is slidably mounted with a detection support 205 along the horizontal direction, the sliding direction of the detection support 205 is perpendicular to that of the sliding support 203, the detection support 205 is provided with two groups along the sliding direction of the detection support 205, and the sliding support 203 is further provided with a linear module seven 206 for driving the two groups of detection supports 205 to approach or separate from each other.
The detection support 205 is provided with the detection unit 208, the detection unit 208 not only can realize double-sided synchronous detection of the PCB main board, but also can carry out air supporting on the PCB main board from two sides of the PCB main board respectively, at this time, the bottom of the PCB main board is supported by the supporting table 201, two sides are supported by air supporting, so that the support of the PCB main board can be completed, and two sides of the PCB main board, which are provided with circuits, electronic elements and the like, are not shielded, the subsequent double-sided synchronous detection can be realized, and because of no shielding, each contact, circuit and electronic element on the PCB main board can be electrified for detection, and in addition, the detection is more precise, the air supporting is gas, and besides the support, the gas can also carry out surface dust cleaning on the PCB main board before the detection, thereby being favorable for the detection.
Specific:
referring to fig. 9 and fig. 10, the detecting unit 208 includes a connection seat group and detecting elements 212, where the detecting elements 212 in the detecting units 208 on the two groups of detecting supports 205 are arranged in opposite directions, and the detecting elements 212 include a detecting substrate and a plurality of probes disposed on the detecting substrate, which is realizable in the prior art, but will not be repeated.
The connecting seat group comprises two groups of connecting seats: the large surfaces of the first connecting seat 210 and the second connecting seat 209 are perpendicular to the sliding direction of the detecting bracket 205, and the large surface refers to the surface with the largest area.
The first connecting seat 210 is connected with the detection support 205, an air groove 2101 is arranged on one side, away from the detection element 212, of the first connecting seat 210, a groove cover 2103 is arranged at a groove opening of the air groove 2101, a nozzle 2104 is arranged on the groove cover 2103, an air hole 2102 is formed in the groove bottom of the air groove 2101, a connecting pipe 207 is arranged at the tail end of the nozzle 2104, the tail end of the connecting pipe 207 is communicated with an air compressor or an air storage tank and the like, and compressed air is supplied to the connecting pipe 207 through the air compressor or the air storage tank.
The second connecting seat 209 is located on one side of the first connecting seat 210 facing the detecting element 212, the first connecting seat 210 is connected with the second connecting seat 209, the large surface of the second connecting seat 209 is provided with the second air hole 2091, the second air hole 2091 and the first air hole 2102 are communicated through the connecting channel 2092 arranged on the second connecting seat 209, and the connecting channel 2092 and the second air hole 2091 are blocked by the first connecting seat 210 facing the orifice of the first connecting seat 210.
The second vent 2091 extends away from the opening of the first connector 210 and has a gas pipe 211, and the end of the gas pipe 211 is communicated with the third vent provided on the detection substrate.
In addition, the third air hole is provided with a plurality of groups on the detection substrate, so the air pipe 211, the second air hole 2091, the connecting channel 2092, and the first air hole 2102 are respectively provided with a plurality of groups.
The working procedure of the first embodiment is shown as follows:
first, the PCB main board is positioned between the two groups of detecting units 208 in a vertical state by the traction of the traction mechanism 100;
then, the fifth linear module 202 drives the supporting platform 201 to move upwards, so that the upper end surface of the supporting platform 201 contacts with the lower end surface of the PCB main board, and the PCB main board is supported from below;
then, the compressed air is blown to the PCB main board sequentially through the connecting pipe 207, the nozzle 2104, the air groove 2101, the air hole one 2102, the connecting channel 2092, the air hole two 2091, the air pipe 211 and the air hole three, and as the two groups of detection units 208 are respectively positioned at two sides of the PCB main board, the two sides of the PCB main board are subjected to uniform supporting air flows, and the two air flows are used for supporting the PCB main board in an air supporting manner from the two sides, in addition, the air supporting manner can be used for cleaning the surface of the PCB main board;
then, the traction mechanism 100 releases the restriction on the PCB main board, and at this time, the PCB main board keeps the current vertical state motionless under the cooperation of the pallet 201 and the two airflows;
then, the linear module seven 206 drives the two groups of detection brackets 205 to be close to each other, so that the probes of the detection element 212 are contacted with the PCB main board, after the contact is completed, the air supporting can be removed, and in addition, the probe is used for carrying out power-on detection on the PCB main board;
comprehensively, this scheme not only can realize the two-sided synchronous detection to the PCB mainboard, has improved detection efficiency, can also carry out surface cleaning to the PCB mainboard before detecting, makes the testing process not influenced by impurity such as dust, and the accuracy of detection structure obtains improving, that is to say, has taken into account detection efficiency and testing result accuracy.
After the detection is completed, the six linear modules 204 drive the sliding support 203 to move, the PCB main board supported by the probes is carried to move to the output member 300, then, the air support is started, the seven linear modules 206 drive the two groups of detection supports 205 to be mutually away, the PCB main board falls to the output member 300 to be pulled and output, and the advantage is that the start of the air support can enable the PCB main board to be vertically arranged and fall downwards, the PCB main board cannot be contacted with the probes, and the phenomenon of scraping does not exist.
In a preferred embodiment, referring to fig. 12, the output member 300 includes a conveyor belt that is obliquely disposed on the frame and has a height lower than that of the detecting unit 208, which has the advantage that, as the PCB main board is kept vertically and falls down under the action of the air support, after the bottom of the PCB main board contacts with the conveyor belt, the bottom of the PCB main board is actively biased toward the lowest point side of the conveyor belt due to the oblique arrangement of the conveyor belt, so that the upward surface of the PCB main board is consistent during each detection and output process of the PCB main board, that is, the front and back sides of the PCB main board are distinguished, and no distinction is needed later.
In a preferred embodiment, referring to fig. 10, the nozzle 2104 and the air groove 2101 are coaxial, a plurality of groups of air holes 2102 are distributed in an array along the circumferential direction of the air groove 2101, the lengths of the connecting channels 2092 of each group are consistent, and the lengths of the connecting pipes 207 are consistent; the PCB main board is provided with a plurality of air holes, and the air holes are arranged on the outer side of the PCB main board.
In a preferred embodiment, referring to fig. 11, the air pipe 211 comprises a spherical section 2111, a first connecting section 2112 for communicating the spherical section 2111 with a second air hole 2091, and a second connecting section 2113 for communicating the spherical section 2111 with a third air hole, wherein an inner cylinder 2114 is coaxially arranged inside the air pipe 211, and one end of the inner cylinder 2114 extends into the third air hole; in this way, the cross section of the air flow blown to the PCB main board through the air hole three is in a circular shape, which means that, if not, it is easy to think of a person skilled in the art that the air flow is in a circular shape, so that the air support is concentrated at one point, whereas in the contrary view of the scheme, the cross section of the air flow is in a circular shape, the air support is uniformly dispersed along the circumferential direction, and is changed into a uniformly dispersed linear support from the point support concentrated at one point, and under the same condition, the effect of the air support is better.
Example two
Referring to fig. 3-7, the traction mechanism 100 includes a stacking member 110, a first traction member 120, and a second traction member 130, where the stacking member 110 is configured to sequentially stack a plurality of PCB mainboards along a vertical direction, the first traction member 120 is configured to traction the PCB mainboards on the stacking member 110 to be vertically arranged, the second traction member 130 is configured to traction the PCB mainboards vertically arranged to move between two groups of detection units 208, and a region between the two groups of detection units 208 is a detection region.
Referring to fig. 3 and 4, the palletizing member 110 includes a support table 112 and a linear module 111 for driving the support table 112 to move in a vertical direction.
The stacking member 110 further comprises a movable bracket 113 slidably mounted on the frame along the horizontal direction, the sliding direction of the movable bracket 113 is parallel to the sliding direction of the sliding bracket 203, two groups of movable brackets 113 are arranged along the sliding direction of the movable bracket 113, and a second linear module 114 for driving the two groups of movable brackets 113 to approach or separate from each other is arranged on the frame.
Each group of movable brackets 113 is provided with two groups of movable brackets 115 in a sliding manner along the horizontal direction, the sliding direction of the movable brackets 115 is perpendicular to the sliding direction of the movable brackets 113, and the movable brackets 113 are provided with a linear module III 116 for driving the two groups of movable brackets 115 to be far away from or close to each other.
The upper end surface of each group of movable seats 115 is provided with a positioning plate 117 which is vertically arranged, the positioning plates 117 are L-shaped, the positioning plates 117 on the four groups of movable seats 115 are mutually matched, a rectangular area is formed, and the supporting table 112 is positioned in the rectangular area.
The supporting table 112 is driven to move downwards to the lowest point through the first linear module 111, the rectangular area is enlarged through the cooperation of the second linear module 114 and the third linear module 116, then, the PCB main boards are stacked and placed on the supporting table 112, and then, the PCB main boards in stacked arrangement are pushed and positioned through the cooperation of the second linear module 114 and the third linear module 116, so that the PCB main boards are orderly stacked on the supporting table 112.
Referring to fig. 3 and 5, the first traction member 120 includes an arc-shaped rack 123 slidably mounted on the frame, a gear 122 meshed with the arc-shaped rack 123, and a first motor 121 in power connection with the gear 122, where an adsorption head 124 is disposed at an upper end of the arc-shaped rack 123, and the adsorption head 124 is used for performing negative pressure adsorption on the PCB main board in a negative pressure adsorption manner, which is realizable in the prior art and is not described in detail.
The first motor 121 drives the gear 122 to rotate, and then drives the arc-shaped rack 123 to rotate ninety degrees, so that the adsorption head 124 is in contact with the uppermost PCB main board in the stacking member 110, then the adsorption head 124 carries out negative pressure adsorption on the PCB main board, and then the first motor 121 reversely operates to drive the arc-shaped rack 123 to reversely rotate ninety degrees, so that the PCB main board adsorbed by the negative pressure is vertically arranged.
Referring to fig. 3 and 6, the second traction member 130 includes two sets of mounting brackets 131 slidably mounted on the frame in a vertical direction, and a fourth linear module 132 for driving the two sets of mounting brackets 131 toward or away from each other.
The mounting bracket 131 is provided with a clamping seat 133 in a sliding manner along the sliding direction of the movable bracket 113, the mounting bracket 131 is also provided with a synchronous belt group 136, the synchronous belt group 136 is realized by the existing synchronous belt technology, and the clamping seat 133 is connected with the synchronous belt group 136 and moves along with the clamping seat 133 through the synchronous belt group 136.
The frame is provided with a transmission shaft 135 which is vertically arranged and a motor II 134 which is used for driving the transmission shaft 135 to rotate, the input end of the synchronous belt group 136 is in power connection with the transmission shaft 135 through a spline, and when the synchronous belt group 136 moves along with the mounting bracket 131, the transmission shaft 135 continuously outputs power to the synchronous belt group 136 through the spline.
Referring to fig. 6 and 7, a clip groove 1331 is provided at one side of the two sets of clip holders 133 opposite to each other, and the clip groove 1331 has an isosceles trapezoid shape.
The synchronous belt group 136 is driven to move through the motor II 134, so that the two groups of clamping seats 133 are respectively positioned on the upper side and the lower side of the PCB main board which is adsorbed by the traction component I120 and is vertically arranged, then the two groups of mounting brackets 131 are driven to be close to each other through the linear module IV 132, the PCB main board is clamped through the clamping grooves 1331 of the two groups of clamping seats 133, after the clamping is finished, the adsorption head 124 withdraws negative pressure adsorption, the motor II 134 drives the synchronous belt group 136 to move reversely, and the PCB main board is driven to move between the two groups of detection units 208, and then the PCB main board is detected as in the embodiment I.
In the above process, it should be noted that it can be realized by two axes, namely, the two axes are that: the rotation of the curved rack 123 and the movement of the holder 133, as will be readily appreciated by those skilled in the art, are: the technical means such as the mechanical arm is utilized to pull the adsorption structure to move and contact with the PCB main board on the stacking member 110, after negative pressure adsorption is good, the PCB main board is pulled to be vertically arranged, then, the technical means such as the mechanical arm is utilized to pull the clamping structure to move to the vicinity of the vertically arranged PCB main board, after clamping, the PCB main board is pulled to move to the detection area, that is, four-axis linkage is easily thought of to realize driving the PCB main board to be vertically arranged and move to between two groups of detection units 208, in the scheme, double-axis linkage can be realized, the efficiency is higher, and the action is simpler.
In this embodiment, the linear module for driving the object to move, for example, the linear module one 111, may be: the object is connected with the screw rod, and the object and the surrounding support form sliding fit, and the screw rod is driven to rotate through a motor or manually, so that the object is driven to move along the axial lead of the screw rod, and the device can be realized in the prior art and is not described in detail.
In this solution, two objects are driven to approach or separate from each other, for example, the second linear module 114, which may be: the screw rod is divided into two groups of screw thread sections with opposite screw directions, an object is arranged on each of the two groups of screw thread sections, the object and surrounding brackets form sliding fit, the screw rod is driven to rotate through a motor or manually, and then the two objects are driven to be close to or far away from each other, so that the screw rod can be realized in the prior art, and the repeated description is omitted.
A detection process of a PCB main board comprises the following steps:
step one: sequentially stacking a plurality of PCB main boards on the stacking member 110 along the vertical direction through the stacking member 110;
step two: switching the uppermost PCB motherboard in the palletizing member 110 from a horizontal arrangement to a vertical arrangement by the first traction member 120;
step three: the PCB main board which is vertically arranged is moved between the two groups of detection units 208 through the second traction component 130;
step four: the linear module five 202 drives the supporting platform 201 to move upwards, so that the upper end surface of the supporting platform 201 contacts with the lower end surface of the PCB main board, and the PCB main board is supported from below;
compressed air is blown to the PCB main board sequentially through the connecting pipe 207, the connector 2104, the air groove 2101, the air hole one 2102, the connecting channel 2092, the air hole two 2091, the air pipe 211 and the air hole three, the PCB main board is supported by two airflows from two sides, and the surface of the PCB main board is cleaned by the air supporting;
the traction mechanism 100 releases the constraint on the PCB motherboard;
step five: the linear module seven 206 drives the two groups of detection brackets 205 to be close to each other, so that the probes of the detection element 212 are contacted with the PCB main board, after the contact is completed, the air support is withdrawn, and the probe is used for carrying out power-on detection on the PCB main board;
step six: after the detection is completed, the sixth linear module 204 drives the sliding support 203 to move, and the PCB main board supported by the probe is moved above the output member 300;
the air supporting is started, the linear module seven 206 drives the two groups of detection brackets 205 to be away from each other, the PCB main board is kept in a vertical state and leaves the area between the two groups of detection units 208, then falls onto the output member 300 to be pulled and output, and the upward surface of the PCB main board is consistent during each output.
The present invention is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present invention.
Claims (7)
1. The utility model provides a precision inspection equipment of PCB mainboard, includes frame, its characterized in that: the frame is provided with a traction mechanism (100), a detection mechanism (200) and an output member (300), wherein the traction mechanism (100) is used for dragging the PCB main board to be positioned in a detection area of the detection mechanism (200) in a vertical state;
the detection mechanism (200) comprises a saddle (201), a straight line module five (202) for driving the saddle (201) to move along the vertical direction, a sliding support (203) slidably installed on the frame along the horizontal direction and a straight line module six (204) for driving the sliding support (203) to move, a detection support (205) is slidably installed on the sliding support (203) along the horizontal direction, the sliding direction of the detection support (205) is perpendicular to the sliding direction of the sliding support (203), two groups of detection supports (205) are arranged along the sliding direction of the detection support, and a straight line module seven (206) for driving the two groups of detection supports (205) to be close to or far away from each other is also arranged on the sliding support (203);
the detection support (205) is provided with detection units (208), the detection units (208) comprise a connecting seat group and detection elements (212), the detection elements (212) in the detection units (208) on the two groups of detection supports (205) are arranged in opposite directions, and the detection elements (212) comprise a detection substrate and a plurality of probes arranged on the detection substrate;
the connecting seat group comprises a connecting seat I (210) and a connecting seat II (209) which are connected with each other, the connecting seat I (210) is connected with the detection support (205), one side of the connecting seat I (210) away from the detection element (212) is provided with an air groove (2101), the notch of the air groove (2101) is provided with a groove cover (2103), the groove cover (2103) is provided with a nozzle (2104), the groove bottom of the air groove (2101) is provided with an air hole I (2102), the tail end of the nozzle (2104) is provided with a connecting pipe (207), and the tail end of the connecting pipe (207) is communicated with the air compressor;
the second connecting seat (209) is positioned at one side of the first connecting seat (210) facing the detection element (212), the large surface of the second connecting seat (209) is provided with a second air hole (2091), the second air hole (2091) is communicated with the first air hole (2102) through a connecting channel (2092) arranged on the second connecting seat (209), the second air hole (2091) extends to form an air pipeline (211) away from the orifice of the first connecting seat (210), and the tail end of the air pipeline (211) is communicated with a third air hole arranged on the detection substrate;
the detection unit (208) is used for realizing double-sided synchronous detection of the PCB main board and is used for carrying out air supporting on the PCB main board from two sides of the PCB main board;
the output member (300) includes a conveyor belt that is disposed obliquely to the frame and has a height lower than the detection unit (208).
2. The precision inspection apparatus of a PCB motherboard of claim 1, wherein: the third air hole is provided with a plurality of groups on the detection substrate, and the air pipeline (211), the second air hole (2091), the connecting channel (2092) and the first air hole (2102) are respectively provided with a plurality of groups correspondingly;
the connector (2104) and the air groove (2101) are coaxial, a plurality of groups of first air holes (2102) are distributed in an array mode along the circumferential direction of the air groove (2101), the lengths of the connecting channels (2092) of each group are consistent, and the lengths of the connecting pipes (207) are consistent.
3. The precision inspection apparatus of a PCB motherboard of claim 1, wherein: the air pipeline (211) comprises a spherical section (2111), a first connecting section (2112) for communicating the spherical section (2111) with a second air hole (2091) and a second connecting section (2113) for communicating the spherical section (2111) with a third air hole, an inner cylinder (2114) is coaxially arranged in the air pipeline (211), and one end of the inner cylinder (2114) extends into the third air hole.
4. The precision inspection apparatus of a PCB motherboard of claim 1, wherein: the traction mechanism (100) comprises a stacking member (110), a first traction member (120) and a second traction member (130), wherein the stacking member (110) is used for orderly stacking a plurality of PCB mainboards along the vertical direction, the first traction member (120) is used for dragging the PCB mainboards on the stacking member (110) to be vertically arranged, and the second traction member (130) is used for dragging the vertically arranged PCB mainboards to move between two groups of detection units (208).
5. The precision inspection equipment for a PCB main board according to claim 4, wherein: the first traction component (120) comprises an arc-shaped rack (123) which is slidably arranged on the rack, a gear (122) which is meshed with the arc-shaped rack (123) and a first motor (121) which is in power connection with the gear (122), wherein an adsorption head (124) is arranged at the upper end of the arc-shaped rack (123).
6. The precision inspection equipment for a PCB main board according to claim 5, wherein: the second traction component (130) comprises two groups of mounting brackets (131) which are arranged on the frame in a sliding manner along the vertical direction and a fourth linear module (132) which is used for driving the two groups of mounting brackets (131) to be close to or far away from each other, a clamping seat (133) is arranged on the mounting brackets (131) in a sliding manner along the sliding direction of the movable bracket (113), a synchronous belt group (136) is also arranged on the mounting brackets (131), and the clamping seat (133) is connected with the synchronous belt group (136);
a transmission shaft (135) which is vertically arranged and a motor II (134) which is used for driving the transmission shaft (135) to rotate are arranged on the rack, the input end of the synchronous belt group (136) is in power connection with the transmission shaft (135) through a spline, and when the synchronous belt group (136) moves along with the mounting bracket (131), the transmission shaft (135) continuously outputs power to the synchronous belt group (136) through the spline;
the two groups of clamping seats (133) are provided with clamping grooves (1331) on one side opposite to each other, and the clamping grooves (1331) are in the shape of isosceles trapezoid grooves.
7. A process for detecting a precision detecting device for a PCB main board as claimed in claim 6, wherein: which comprises the following steps:
step one: sequentially stacking a plurality of PCB main boards on the stacking member (110) along the vertical direction through the stacking member (110);
step two: switching the uppermost PCB main board in the stacking member (110) from a horizontal arrangement to a vertical arrangement through the first traction member (120);
step three: the PCB main board which is vertically arranged is moved between the two groups of detection units (208) through the second traction component (130);
step four: the straight line module five (202) drives the supporting table (201) to move upwards, so that the upper end face of the supporting table (201) is contacted with the lower end face of the PCB main board, the PCB main board is supported from below, meanwhile, compressed air sequentially passes through the connecting pipe (207), the connector (2104), the air groove (2101), the air hole one (2102), the connecting channel (2092), the air hole two (2091), the air pipe (211) and the air hole three to blow to the PCB main board, the PCB main board is supported by two airflows from two sides, and the PCB main board is also cleaned by the air supporting;
step five: the traction mechanism (100) releases the limit on the PCB main board;
the linear module seven (206) drives the two groups of detection brackets (205) to be close to each other, so that probes of the detection element (212) are contacted with the PCB main board, after the contact is completed, the air support is withdrawn, and the probe is used for carrying out power-on detection on the PCB main board;
step six: after the detection is finished, the linear module six (204) drives the sliding support (203) to move, and the PCB main board supported by the probe is driven to move to the upper part of the output component (300);
the air supporting is started, the two groups of detection brackets (205) are driven to be away from each other by the linear module seven (206), the PCB main board is kept in a vertical state and leaves the area between the two groups of detection units (208), and then falls onto the output component (300) to be pulled and output, and the upward surface of the PCB main board is consistent during each output.
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| CN202311328173.1A CN117054862B (en) | 2023-10-13 | 2023-10-13 | Precise detection equipment and detection process for PCB main board |
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| CN202311328173.1A CN117054862B (en) | 2023-10-13 | 2023-10-13 | Precise detection equipment and detection process for PCB main board |
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