CN117129841B - ICT test fixture device that opens and shuts - Google Patents
ICT test fixture device that opens and shuts Download PDFInfo
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- CN117129841B CN117129841B CN202311401132.0A CN202311401132A CN117129841B CN 117129841 B CN117129841 B CN 117129841B CN 202311401132 A CN202311401132 A CN 202311401132A CN 117129841 B CN117129841 B CN 117129841B
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- 238000012360 testing method Methods 0.000 title claims abstract description 86
- 239000000523 sample Substances 0.000 claims abstract description 46
- 239000000758 substrate Substances 0.000 claims abstract description 24
- 238000004891 communication Methods 0.000 claims abstract description 7
- 230000007246 mechanism Effects 0.000 claims description 64
- 238000003860 storage Methods 0.000 claims description 51
- 239000007788 liquid Substances 0.000 claims description 34
- 230000000007 visual effect Effects 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 2
- 238000005476 soldering Methods 0.000 abstract description 19
- 230000009471 action Effects 0.000 abstract description 18
- 230000002950 deficient Effects 0.000 abstract description 4
- 238000001125 extrusion Methods 0.000 description 10
- 238000003466 welding Methods 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000306 component Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002904 solvent Substances 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
- G01R31/2808—Holding, conveying or contacting devices, e.g. test adapters, edge connectors, extender boards
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Tests Of Electronic Circuits (AREA)
Abstract
The invention belongs to the technical field of circuit board testing, and particularly relates to an ICT (information and communication technology) testing clamp opening and closing device which comprises a base and a top cover, wherein side plates are integrally formed on the back parts of the base and the top cover, an insulating substrate is arranged between the base and the top cover, a plurality of testing probes are arranged below the insulating substrate, a plurality of cavities are formed in the insulating substrate, and each cavity is in sliding connection with a corresponding testing probe. The invention can not only lock and fix the test probe by the gas generated by one-time opening and closing action, but also assist in finding out the point position with poor soldering quality in advance, and can also perform the identification of defective products, and can avoid the damage of the test point or the probe caused by the difference of soldering heights, and can automatically prompt personnel when the test point has higher or lower phenomenon, thereby improving the factory quality of the circuit board.
Description
Technical Field
The invention belongs to the technical field of circuit board testing, and particularly relates to an ICT testing clamp opening and closing device.
Background
In order to ensure the quality of the circuit board, the circuit board needs to be tested in the production process of the circuit board, and the circuit board is mainly divided into an ICT test and an FCT test, wherein the ICT test mainly detects the open circuit, the short circuit, the missing part, the wrong part, the reverse part and the like of a circuit of a PCB.
At present, an ICT test fixture is one of core components in a circuit board test, and is mainly used for installing a circuit board to be detected, probes for detecting the circuit board are installed on the fixture, the probes are contacted with detection points on the circuit board through opening and closing actions, then test work can be performed, and at present, the probes on the upper side are driven to move by a driving piece (such as a hydraulic cylinder, an electric push rod and the like) to complete the opening and closing actions of the ICT test fixture, such as an ICT test fixture opening and closing device disclosed in patent publication No. CN109884514 a;
however, in the process of mounting electronic components of the circuit board, the control of soldering cannot be the same, thick or thin soldering points exist after soldering, the phenomenon of interference with other components is possibly caused by the thick and excessively high soldering points, the thin soldering points can cause insufficient soldering strength and are easy to crack, in addition, the probes are generally fixed on the substrate in order to keep connection stable and reliable, when the probes are in contact with the excessively thick soldering points, the mutual propping pressure between the probes and the soldering points is large, the solder points and the probes can be damaged, and the excessively thin soldering points can not be in contact with the probes due to insufficient height, so that the subsequent normal detection is affected.
Disclosure of Invention
The invention aims to solve the problems and provide an ICT test fixture opening and closing device.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides an ICT test fixture opening and shutting device, includes base and top cap, the back integrated into one piece of base and top cap is provided with the curb plate, be provided with insulating substrate between base and the top cap, insulating substrate's below is provided with many test probes, a plurality of cavities have been seted up to insulating substrate's inside, and each cavity all with corresponding test probe sliding connection, each the equal fixed mounting in inner wall of cavity has the gasbag cover, each the equal fixed mounting in top of test probe has the insulated column, and each insulated column all is located the inside slip setting of cavity that corresponds, each the insulated column all is located the inboard slip setting that corresponds the gasbag cover, insulating substrate installs with each gasbag cover jointly and aerifys fixed establishment, each the insulated column all installs trigger mechanism with same side cavity jointly, the front end fixed mounting of top cap installs down the actuating mechanism jointly with insulating substrate, two the equal fixed mounting in both ends of base have the air slab with actuating mechanism jointly buffer gas production mechanism, the inside of base is provided with the impact mechanism and the common with the common fixed mounting of actuating mechanism with the vibration of base, the vibration drive mechanism and the common vibration drive mechanism installs the common vibration drive mechanism with the common vibration drive mechanism, the common vibration mechanism is connected with the common vibration drive assembly.
Preferably, the inflatable fixing mechanism comprises an air cavity arranged at the upper side inside the insulating substrate, a plurality of inflatable tubes are fixedly inserted into the lower cavity wall of the air cavity, each inflatable tube is fixedly communicated with the corresponding air bag sleeve, a connecting hose is fixedly inserted into the upper cavity wall of the air cavity, a circular tube is fixedly inserted into the upper cavity wall of the air cavity, and a first normally-closed electromagnetic valve is installed inside the circular tube.
Preferably, each trigger mechanism all includes the fixed insulating support cover that sets up in the insulating column top, and the inside fixed mounting of insulating support cover has the conducting ring, the last chamber wall fixed mounting of cavity has the conducting rod, and conducting rod and conducting ring sliding contact setting, first electromagnetic switch, second electromagnetic switch and the third electromagnetic switch with conducting ring and conducting rod electric connection are installed to the upper end of top cap, and the terminal surface fixed mounting of top cap has audible-visual annunciator, first electromagnetic switch, second electromagnetic switch and third electromagnetic switch all with controller electric connection, and first electromagnetic switch, second electromagnetic switch and third electromagnetic switch all through controller and audible-visual annunciator electric connection.
Preferably, the pushing driving mechanism comprises electric push rods fixedly inserted into two sides of the end face of the top cover, the output ends of the two electric push rods are fixedly connected with movable plates together, and a plurality of wire binding sleeves are mounted between the movable plates and the insulating substrate together.
Preferably, the buffering gas production mechanism comprises a plurality of sliding rods fixedly arranged on two sides of the lower end of the movable plate, the rod walls of the sliding rods are in sliding connection with the end faces of the hollow plates on the same side, the lower ends of the sliding rods are fixedly connected with piston plates jointly, a plurality of first springs are fixedly arranged between the piston plates and the inner walls of the hollow plates on the same side, the two air inlet holes are formed in the lower ends of the side walls of the hollow plates, one-way valves are arranged in the two air inlet holes, and the two air outlet pipes are fixedly inserted into the lower ends of the hollow plates jointly.
Preferably, the vibration striking mechanism comprises a vibration cavity formed in the base, a plurality of T-shaped holes corresponding to the positions of the test probes are formed in the upper cavity wall of the vibration cavity, striking rods are slidably connected in the T-shaped holes, a rotating shaft is rotatably connected to the lower cavity wall of the vibration cavity, a disc is fixedly mounted at the end part of the rotating shaft, and a plurality of extrusion balls corresponding to the positions of the striking rods are fixedly mounted on the end face of the disc.
Preferably, the rotary driving assembly comprises a round cavity formed in the base, the rotary shaft is in sealed rotary connection with the round cavity, one end of the rotary shaft, which is located in the round cavity, is fixedly connected with an impeller, a connecting pipe is fixedly inserted between the pipe wall of the exhaust pipe and the round cavity, an annular cavity is formed in the base, which is located in the outer side of the round cavity, a plurality of communication holes are formed in the annular cavity and the round cavity, and a gas pipe is fixedly inserted into the cavity wall of the annular cavity.
Preferably, the gas storage mechanism comprises a storage cavity formed in the top cover, a round piston is slidably arranged in the storage cavity, a second spring is fixedly arranged on the round piston and the storage cavity together, the lower end of the side wall of the storage cavity is fixedly communicated with the gas pipe, the bottom of the storage cavity is fixedly communicated with the connecting hose, and a third normally-closed electromagnetic valve is arranged at the pipe orifice of the connecting hose.
Preferably, the marking assembly comprises a liquid storage barrel arranged on one side of the insulating substrate, a squeezing piston is slidably arranged in the liquid storage barrel, a liquid discharge pipe is fixedly inserted into the upper end of the liquid storage barrel, the liquid outlet end of the liquid discharge pipe extends to the lower side of the liquid storage barrel, a transverse pipe is fixedly inserted into the air cavity and the lower end of the side wall of the liquid storage barrel, and a second normally closed electromagnetic valve is arranged in the transverse pipe.
Preferably, a group of T-shaped supporting rods are fixedly arranged on the side walls of the two hollow plates, and the limiting plates are connected with the rod walls of the T-shaped supporting rods in a sliding manner.
Compared with the prior art, the ICT test fixture opening and closing device has the advantages that:
1. through base, top cap, curb plate, insulating substrate, many test probes that set up, can regard as the ICT detection of circuit board to use, and push down actuating mechanism through setting up, can carry out the action of opening and shutting of ICT test fixture, and through insulating column, cavity, gasbag cover and the fixed establishment of aerifing that sets up, can be at the in-process that opens and shuts, keep test probe's scalable activity, and after the action of opening and shutting is accomplished, lock test probe, ensure test probe's reliable stability, simultaneously, trigger mechanism that can cooperate the setting, can detect the test point position of each test probe, when the test point position exists higher and lower time phenomenon, can automatic suggestion personnel, avoid the solder joint too high or too low quality of use that influences the circuit board as far as possible.
2. Through the mutual cooperation of the hollow plate and the buffer gas generating mechanism, the downward movement of the test probe can be buffered and decelerated in the opening and closing action of the clamp, and the vibration striking mechanism can vibrate the circuit board at high frequency before the test probe contacts with the test point of the circuit board, so that the spot position with thinner soldering and incomplete soldering is broken and desoldered in advance, the spot position with poor soldering quality can be found in time in the subsequent test, the improvement of the delivery quality of the circuit board is facilitated, and the rotating driving assembly arranged in a matched manner can utilize the gas driving vibration striking mechanism generated by the buffer gas generating mechanism to vibrate at high frequency.
3. Through the air storage mechanism that sets up, can be with the gas that is used for rotary driving mechanism temporarily store, and after the test point contact of follow-up test probe and circuit board, lock the test probe through this temporarily stored gas, ensure test probe's stability, simultaneously, through the mark subassembly that sets up, can be when appearing unqualified circuit board, utilize the fixed air ration blowout marking fluid of test probe, reach the effect to the defective products mark, reduce the possibility that follow-up defective products flow out, through carrying out the gas that the action of opening and shutting produced once, not only can lock fixedly to test probe, can assist in addition to discover the relatively poor position of soldering quality in advance, can also carry out the sign of defective products simultaneously.
Drawings
FIG. 1 is a schematic diagram of an ICT test fixture opening and closing device according to the present invention;
FIG. 2 is a schematic view of the internal partial structure of an insulating substrate of an ICT test fixture opening and closing device provided by the invention;
FIG. 3 is a schematic top view of a top cover of an ICT test fixture opening and closing device according to the present invention;
FIG. 4 is a schematic view of the internal structure of a hollow plate of an ICT test fixture opening and closing device provided by the invention;
FIG. 5 is a schematic view of the internal part of the base of the ICT test fixture opening and closing device according to the present invention;
FIG. 6 is a schematic view of the internal part of the top cover of the ICT test fixture opening and closing device provided by the invention;
fig. 7 is a schematic diagram of the internal structure of a liquid storage barrel of an ICT test fixture opening and closing device provided by the invention.
In the figure: 1 base, 2 top cover, 3 side plate, 4 insulating base plate, 5 test probe, 6 cavity, 7 air bag sleeve, 8 insulating column, 9 inflatable fixing mechanism, 91 air cavity, 92 inflatable tube, 93 connecting hose, 94 round tube, 95 first normally closed solenoid valve, 10 triggering mechanism, 101 insulating supporting sleeve, 102 conducting ring, 103 conducting rod, 104 first electromagnetic switch, 105 second electromagnetic switch, 106 third electromagnetic switch, 107 audible and visual alarm, 11 push driving mechanism, 111 electric push rod, 112 movable plate, 113 wire binding sleeve, 12 hollow plate, 13 buffer gas producing mechanism, 131 slide rod, 132 piston plate, 133 first spring, 134 air inlet, 136 one-way valve, 137 exhaust tube, 14 vibration striking mechanism, 141 vibration chamber, 142T-shaped hole, 143 striking rod, 144 rotary shaft, 145 round disc, 146 press ball, 15 rotary driving assembly, 151 round chamber, 152 impeller, 153 connecting tube, 154 round chamber, 155 communication hole, 156 tube, 16 gas storing mechanism, 161 storage chamber, 162 round piston, 163 second spring, 164 third electromagnetic valve, 17 marking assembly, 171 push tube, 172 push tube, 173, 18 horizontal piston, 18 air-out control plate, and 18 air-stop plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
As shown in fig. 1-7, an ICT test fixture opening and closing device, including base 1 and top cap 2, the front end fixed mounting of base 1 has controller 18, the terminal surface of base 1 is installed and is used for carrying out the reference column that fixes a position to the circuit board, can ensure the accurate installation of circuit board, the back integrated into one piece of base 1 and top cap 2 is provided with curb plate 3, be provided with insulating substrate 4 between base 1 and the top cap 2, insulating substrate 4's below is provided with many test probes 5, test probes 5 pass through the wire and are connected with outside computer test system, the trouble of test can directly show through the computer, this is prior art, so do not overlap here, a plurality of cavitys 6 have been seted up to insulating substrate 4's inside, and each cavity 6 all with the test probes 5 sliding connection that corresponds, the equal fixed mounting in inner wall of each cavity 6 has gasbag cover 7, the equal fixed mounting in top of each test probes 5 has insulating column 8, and each insulating column 8 all are located the inside sliding arrangement of corresponding cavity 6, each insulating column 8 all is located the inboard sliding arrangement of corresponding cover 7, insulating substrate 4 and each sealing cover 7 and each inflation tube 7 are connected with outside computer test system through the wire, the air chamber 91 is connected with the inflation tube is fixed to the inside of the inflation tube 91, the inflation tube is fixed to the inflation tube is connected with the inflation tube is fixed wall 91, the inflation tube is fixed with the inflation tube is fixed air chamber is connected with the inflation tube is fixed with the inflation tube is 91, the inflation tube is fixed, the inflation tube is connected with the inflation tube 91, and has, the inflation tube is fixed.
Each insulating column 8 and homonymy cavity 6 are installed trigger mechanism 10 jointly, each trigger mechanism 10 all includes the insulating support cover 101 that sets up in insulating column 8 top, and insulating support cover 101's inside fixed mounting has conducting ring 102, cavity 6's upper chamber wall fixed mounting has conducting rod 103, and conducting rod 103 and conducting ring 102 sliding contact set up, first electromagnetic switch 104 with conducting ring 102 and conducting rod 103 electric connection's first electromagnetic switch 106, second electromagnetic switch 105 and third electromagnetic switch 106 are installed to the upper end of top cap 2, and the terminal surface fixed mounting of top cap 2 has audible and visual annunciator 107, first electromagnetic switch 104, second electromagnetic switch 105 and third electromagnetic switch 106 all with controller 18 electric connection, and first electromagnetic switch 104, second electromagnetic switch 105 and third electromagnetic switch 106 all through controller 18 with audible and visual annunciator 107 electric connection, after the moving contact of second electromagnetic switch 105 is inhaled, can break the connection loop between first electromagnetic switch 104 and the audible and visual annunciator 107.
The front end of the top cover 2 is fixedly provided with the top cover 2 and the insulating substrate 4 together, the pressing driving mechanism 11 comprises electric push rods 111 fixedly inserted into two sides of the end face of the top cover 2, the output ends of the two electric push rods 111 are fixedly connected with movable plates 112 together, a plurality of wire harness sleeves 113 are jointly arranged between the movable plates 112 and the insulating substrate 4, travel switches are arranged on the electric push rods 111 and are electrically connected with the controller 18, and the controller 18 is convenient to accurately control the front body and retraction work of the electric push rods 111.
The two ends of the base 1 are fixedly provided with the hollow plates 12, the side walls of the two hollow plates 12 are fixedly provided with a group of T-shaped supporting rods 19, and the rod walls of the T-shaped supporting rods 19 in the same group are connected with the limiting plates 20 in a sliding manner, after the circuit board is installed, the circuit board can be limited by horizontally pulling the limiting plates 20 on two sides onto the circuit board, so that the circuit board can be prevented from being separated from a positioning column on the base 1 when the circuit board is impacted.
The two hollow plates 12 and the driving mechanism are jointly provided with the buffer gas generating mechanism 13, the buffer gas generating mechanism 13 comprises a plurality of sliding rods 131 fixedly arranged on two sides of the lower end of the movable plate 112, the rod walls of the sliding rods 131 are in sliding connection with the end faces of the hollow plates 12 on the same side, the lower ends of the sliding rods 131 on the same side are fixedly connected with piston plates 132, a plurality of first springs 133 are fixedly arranged between the two piston plates 132 and the inner walls of the hollow plates 12 on the same side, air inlets 134 are formed in the lower ends of the side walls of the two hollow plates 12, one-way valves 136 are arranged in the two air inlets 134, exhaust pipes 137 are fixedly inserted into the lower ends of the two hollow plates 12, and when the sliding rods 131 move back to drive the piston plates 132 to move back, external air can be supplied into the hollow plates 12 from the air inlets 134 through the one-way valves 136 under the action of external air pressure.
The inside of base 1 is provided with vibration striking mechanism 14, vibration striking mechanism 14 is including setting up the inside vibration chamber 141 of base 1, a plurality of T-shaped holes 142 corresponding with test probe 5 position are seted up to the upper chamber wall of vibration chamber 141, and the inside of each T-shaped hole 142 all sliding connection has striking rod 143, the lower chamber wall rotation of vibration chamber 141 is connected with pivot 144, and the tip fixed mounting of pivot 144 has disc 145, the terminal surface fixed mounting of disc 145 has a plurality of extrusion balls 146 corresponding with striking rod 143 position, utilize the rotation of extrusion ball 146, can carry out repeated extrusion to each striking rod 143, thereby can make each striking rod 143 carry out the striking of high frequency to the circuit board.
The buffer gas generating mechanism 13 and the base 1 are jointly provided with a rotary driving assembly 15 matched with the vibration striking mechanism 14, the rotary driving assembly 15 comprises a round cavity 151 arranged in the base 1, a rotary shaft 144 is in sealing and rotating connection with the round cavity 151, one end of the rotary shaft 144, which is positioned in the round cavity 151, is fixedly connected with an impeller 152, a connecting pipe 153 is fixedly spliced between the pipe wall of the exhaust pipe 137 and the round cavity 151, an annular cavity 154 is arranged in the base 1 and positioned outside the round cavity 151, a plurality of communication holes 155 are jointly formed in the annular cavity 154 and the round cavity 151, a gas pipe 156 is fixedly spliced on the cavity wall of the annular cavity 154, air in the exhaust pipe 137 can enter the round cavity 151 through the connecting pipe 153, and the impeller 152 can be pushed to drive the rotary shaft 144 to synchronously rotate under the action of fast flowing air flow.
The rotary driving assembly 15 and the top cover 2 are jointly provided with the air storage mechanism 16, the air storage mechanism 16 is communicated with the air inflation fixing mechanism 9, the air storage mechanism 16 comprises a storage cavity 161 which is formed in the top cover 2, a round piston 162 is slidably arranged in the storage cavity 161, the round piston 162 and the storage cavity 161 are fixedly provided with a second spring 163, the lower end of the side wall of the storage cavity 161 is fixedly communicated with the air pipe 156, the bottom of the storage cavity 161 is fixedly communicated with the connecting hose 93, a third normally closed electromagnetic valve 164 is arranged at the pipe orifice of the connecting hose 93, after the third normally closed electromagnetic valve 164 is electrified and opened, the round piston 162 can be returned under the action of the second spring 163, air is inflated into the air cavity 91 through the connecting hose 93, and an air outlet hole is formed in the top of the storage cavity 161 and used for discharging the air in the storage cavity 161.
The inflation fixing mechanism 9 and the driving mechanism are jointly provided with the marking assembly 17, the marking assembly 17 comprises a liquid storage barrel 171 arranged on one side of the insulating substrate 4, a squeezing piston 172 is slidably arranged in the liquid storage barrel 171, a liquid discharge pipe 173 is fixedly inserted into the upper end of the liquid storage barrel 171, the liquid outlet end of the liquid discharge pipe 173 extends to the lower side of the liquid storage barrel 171, a transverse pipe 174 is fixedly inserted into the air cavity 91 and the lower end of the side wall of the liquid storage barrel 171, a second normally closed electromagnetic valve 175 is arranged in the transverse pipe 174, color marking paint (which can be erased by solvents such as alcohol later) is stored in the liquid storage barrel 171, a liquid adding hole and a sealing cover are arranged at the top of the liquid storage barrel 171, and the liquid storage barrel 171 is fixedly inserted into the movable plate 112.
The principle of operation of the present invention will now be described as follows: the controller 18 is connected with an external power supply, a circuit board to be detected is arranged on a positioning column of the base 1, then limiting plates 20 on the two hollow plates 12 are translated to two sides above the circuit board, the purpose of limiting the circuit board is achieved, and then the controller 18 is started;
after the controller 18 is started, the controller 18 immediately controls the two electric push rods 111 to move forward for 8 seconds, under the action of the electric push rods 111, the movable plate 112 can move downwards, at the moment, under the action of the plurality of sliding rods 131, the two piston plates 132 can move downwards synchronously, the piston plates 132 can discharge air in the hollow plate 12 on the same side into the exhaust pipe 137 along with the downward movement of the piston plates 132, then the air is sprayed into the circular cavity 151 through the connecting pipe 153, under the action of the flowing of the air, the impeller 152 can be pushed to drive the rotating shaft 144 to rotate, so that the plurality of extrusion balls 146 on the circular disc 145 can be driven to rotate synchronously, when each extrusion ball 146 moves to the corresponding impact rod 143, the impact rods 143 can move upwards rapidly and impact the circuit board arranged on the base 1 due to the extrusion action of the extrusion balls 146 on the impact rods 143, and after the extrusion balls 146 are separated from the impact rods 143, the impact rods 143 can automatically fall back under the action of gravity, and the extrusion balls 146 can move on the impact rods 143 to the circuit board, so that the high-frequency impact rods can be completely broken, and the high-frequency vibration welding points can be completely prevented from being completely broken;
air entering the circular cavity 151 enters the circular cavity 154 through the communication hole 155, then the air is discharged into the storage cavity 161 through the air pipe 156 arranged in the circular cavity 154 and moves upwards the circular piston 162, so that the air can be temporarily stored, after the controller 18 controls the two electric push rods 111 to work for 8 seconds, the controller 18 controls the electric push rods 111 to stop working, at the moment, each test probe 5 is in contact with each test point on the circuit board, then the controller 18 immediately controls the third normally closed electromagnetic valve 164 in the storage cavity 161 to electrify and work, at the moment, under the action of the second spring 163, the circular piston 162 can be moved downwards, the air in the storage cavity 161 enters the air cavity 91 through the connecting hose 93, then the air is filled into the corresponding air bag sleeve 7 through each air inflation pipe 92, and under the action of air pressure, each air bag sleeve 7 can be inflated against the side wall of the corresponding insulating column 8, so that the locking and fixing of each insulating column 8 can be carried out, and the test probe 5 can be ensured to keep enough reliability and stability during testing;
when the test probe 5 is in contact with the circuit board test point, because the air bag sleeve 7 is not inflated in the initial state, after the test probe 5 is in contact with the corresponding test point, the test probe 5 is blocked by a tin welding point, the test probe 5 moves upwards relative to the same side cavity 6, the higher the thickness of the tin welding point is, the higher the upwards moving height of the test probe 5 relative to the same side cavity 6 is, the test probe 5 can drive the conductive ring 102 in the same side insulating support sleeve 101 to move upwards through the same side insulating column 8, so that the higher the thickness of the tin welding point is, the higher the contact point between the conductive ring 102 and the same side conductive rod 103 is, and the controller 18 can control the first electromagnetic switch 104, the second electromagnetic switch 105 and the third electromagnetic switch 106 to be electrified for 9 seconds after being started, so that the acousto-optic alarm 107 can not be electrified to work within 9 seconds after the controller 18 controls the two electric push rods 111 to work for 8 seconds, the conductive ring 102 and the conductive rod 103 are stopped from moving, and at the moment, the connection loop between the conductive ring 102 and the conductive rod 103 and the corresponding first electromagnetic switch 104, the second electromagnetic switch 105 and the third electromagnetic switch 106 is connected;
when the thickness of the soldering point is too high, the point where the conductive rod 102 contacts the corresponding conductive rod 103 is high, so that the conductive rod 103 is connected to the conductive ring 102 and the connecting loops of the first electromagnetic switch 104, the second electromagnetic switch 105 and the third electromagnetic switch 106 in a short length, the overall resistance in the connecting loops of the conductive ring 102, the conductive rod 103, the first electromagnetic switch 104, the second electromagnetic switch 105 and the third electromagnetic switch 106 is reduced, the current passing through the connecting loops of the first electromagnetic switch 104, the second electromagnetic switch 105 and the third electromagnetic switch 106 is large, enough magnetic attraction can be generated inside the first electromagnetic switch 104, the second electromagnetic switch 105 and the third electromagnetic switch 106 to attract the moving contacts of the first electromagnetic switch 104 and the audible and visual alarm 107 in a suction state, and the moving contacts of the third electromagnetic switch 106 are connected to the connecting loops of the audible and visual alarm 107 in a suction state, so that the thickness of the connecting loops of the audible and visual alarm 107 and the controller 18 is still high, and the audible and visual alarm 107 is indicated in a high corresponding state, and the audible and visual alarm 106 is displayed;
under the condition that the soldering point thickness is thinner, the point position of the conductive ring 102, which is contacted with the corresponding conductive rod 103, is lower, at the moment, the conductive rod 103 is connected with the conductive ring 102 and the connecting loops of the first electromagnetic switch 104, the second electromagnetic switch 105 and the third electromagnetic switch 106, the length of the conductive ring is longer, at the moment, the integral resistance of the connecting loops of the conductive ring 102, the conductive rod 103, the first electromagnetic switch 104, the second electromagnetic switch 105 and the third electromagnetic switch 106 is larger, so that the current introduced into the connecting loops of the first electromagnetic switch 104, the second electromagnetic switch 105 and the third electromagnetic switch 106 is smaller, at the moment, because the current is smaller, only the moving contact of the first electromagnetic switch 104 can be attracted by itself, and because the moving contact of the second electromagnetic switch 105 is not attracted, the connecting loops between the audible and visual alarm 107 and the controller 18 can be connected, and the soldering point position of personnel can be reminded to be too thin;
under the condition that the thickness of the soldering point is moderate, the conducting ring 102 is positioned at the middle position of the conducting rod 103, at the moment, the conducting rod 103 is connected to the conducting ring 102 and the connecting loops of the first electromagnetic switch 104, the second electromagnetic switch 105 and the third electromagnetic switch 106, the length of the conducting ring 102, the conducting rod 103 and the connecting loops of the first electromagnetic switch 104, the second electromagnetic switch 105 and the third electromagnetic switch 106 is moderate, at the moment, the whole resistance of the conducting ring 102, the conducting rod 103 and the connecting loops of the first electromagnetic switch 104, the second electromagnetic switch 105 and the third electromagnetic switch 106 is moderate, so that the current introduced into the connecting loops of the first electromagnetic switch 104, the second electromagnetic switch 105 and the third electromagnetic switch 106 is moderate, at the moment, the introduced current only can meet the condition that the moving contact of the first electromagnetic switch 104 and the second electromagnetic switch 105 is attracted, and the connecting loops between the first electromagnetic switch 104 and the audible and visual alarm 107 can be disconnected under the state that the moving contact of the second electromagnetic switch 105 is attracted, and the audible and visual alarm 107 can not carry out alarm work;
when a single circuit board tests that a disqualified state exists or an audible and visual alarm 107 alarms exists, at this time, an operator presses a fault marking button on the controller 18, then the controller 18 controls a second normally-closed electromagnetic valve 175 in the transverse pipe 174 to work for 2 seconds at regular time, at this time, air in the air cavity 91 enters the liquid storage barrel 171 through the transverse pipe 174, under the action of air pressure, the extruding piston 172 can be pushed to move upwards for a certain distance, so that marking liquid in the liquid storage barrel 171 can be pushed to drop out through a liquid discharge pipe 173, the dropped marking liquid falls on the surface of the circuit board and can mark the circuit board, and after the second normally-closed electromagnetic valve 175 works for 2 seconds, the controller 18 controls a first normally-closed electromagnetic valve 95 on the circular pipe 94 to work, at this time, redundant air in the air cavity 91 is directly discharged;
after the single circuit board is tested to be qualified, an operator presses a reset button on the controller 18, and at this time, the controller 18 directly controls the first normally-closed electromagnetic valve 95 on the circular tube 94 to be electrified and opened, and controls the electric push rod 111 to carry out return operation for 8 seconds.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (8)
1. The utility model provides an ICT test fixture opening and closing device, includes base (1) and top cap (2), the back integrated into one piece of base (1) and top cap (2) is provided with curb plate (3), a serial communication port, be provided with insulating base plate (4) between base (1) and top cap (2), the below of insulating base plate (4) is provided with many test probes (5), a plurality of cavities (6) have been seted up to the inside of insulating base plate (4), and each cavity (6) all with test probes (5) sliding connection that corresponds, each the equal fixed mounting in inner wall of cavity (6) has gasbag cover (7), each the equal fixed mounting in top of test probes (5) has insulating column (8), and each insulating column (8) all are located the inside slip setting of cavity (6) that corresponds, insulating base plate (4) and each gasbag cover (7) install jointly and aerify fixed establishment (9), each insulating column (8) and top cap (6) all are installed jointly with the same side and are installed in common drive mechanism (10) before installing top cap (2), the device comprises a base (1), wherein two ends of the base (1) are fixedly provided with hollow plates (12), two hollow plates (12) are jointly provided with a buffer gas generating mechanism (13) with a driving mechanism, the inside of the base (1) is provided with a vibration striking mechanism (14), the buffer gas generating mechanism (13) and the base (1) are jointly provided with a rotary driving assembly (15) matched with the vibration striking mechanism (14), the rotary driving assembly (15) and a top cover (2) are jointly provided with a gas storage mechanism (16), the gas storage mechanism (16) is communicated with an inflation fixing mechanism (9), the inflation fixing mechanism (9) and the driving mechanism are jointly provided with a marking assembly (17), and the front end of the base (1) is fixedly provided with a controller (18);
the inflatable fixing mechanism (9) comprises an air cavity (91) which is arranged at the upper side inside the insulating substrate (4), a plurality of inflatable tubes (92) are fixedly inserted into the lower cavity wall of the air cavity (91), the inflatable tubes (92) are fixedly communicated with the corresponding air bag sleeves (7), a connecting hose (93) is fixedly inserted into the upper cavity wall of the air cavity (91), a round tube (94) is fixedly inserted into the upper cavity wall of the air cavity (91), a first normally closed electromagnetic valve (95) is arranged in the inner part of the round tube (94), each triggering mechanism (10) comprises an insulating supporting sleeve (101) fixedly arranged at the top of the insulating column (8), a conducting ring (102) is fixedly arranged in the inner part of the insulating supporting sleeve (101), a conducting rod (103) is fixedly arranged on the upper cavity wall of the cavity (6), the conducting rod (103) is in sliding contact with the conducting ring (102), a first electromagnetic switch (104), a second electromagnetic switch (105) and a third electromagnetic switch (106) which are electrically connected with the conducting ring (102) and the conducting rod (103), a third electromagnetic switch (106) are fixedly arranged at the upper end of the top cover (2) and the third electromagnetic switch (106) is electrically connected with the first electromagnetic switch (106), and the first electromagnetic switch (104), the second electromagnetic switch (105) and the third electromagnetic switch (106) are electrically connected with the audible and visual alarm (107) through the controller (18).
2. The ICT test fixture opening and closing device according to claim 1, wherein the pushing driving mechanism (11) comprises electric push rods (111) fixedly inserted into two sides of the end face of the top cover (2), the output ends of the two electric push rods (111) are fixedly connected with movable plates (112) together, and a plurality of wire harness sleeves (113) are mounted between the movable plates (112) and the insulating substrate (4) together.
3. The ICT test fixture opening and closing device according to claim 2, wherein the buffer gas generating mechanism (13) comprises a plurality of sliding rods (131) fixedly arranged on two sides of the lower end of the movable plate (112), rod walls of the sliding rods (131) are slidably connected with the end faces of the same-side hollow plates (12), piston plates (132) are fixedly connected with the lower ends of the sliding rods (131) on the same side, a plurality of first springs (133) are fixedly arranged between the two piston plates (132) and the inner wall of the same-side hollow plates (12), air inlet holes (134) are formed in the lower ends of the side walls of the two hollow plates (12), one-way valves (136) are arranged in the two air inlet holes (134), and exhaust pipes (137) are fixedly inserted into the lower ends of the two hollow plates (12) together.
4. An ICT test fixture opening and closing device according to claim 3, characterized in that the vibration striking mechanism (14) comprises a vibration cavity (141) arranged in the base (1), a plurality of T-shaped holes (142) corresponding to the positions of the test probes (5) are arranged on the upper cavity wall of the vibration cavity (141), striking rods (143) are slidably connected in the T-shaped holes (142), a rotating shaft (144) is rotatably connected to the lower cavity wall of the vibration cavity (141), a circular disc (145) is fixedly arranged at the end part of the rotating shaft (144), and a plurality of pressing balls (146) corresponding to the positions of the striking rods (143) are fixedly arranged on the end face of the circular disc (145).
5. The ICT test fixture opening and closing device according to claim 4, characterized in that the rotary driving assembly (15) comprises a round cavity (151) arranged inside the base (1), the rotary shaft (144) is connected with the round cavity (151) in a sealing and rotating manner, one end of the rotary shaft (144) positioned inside the round cavity (151) is fixedly connected with an impeller (152), a connecting pipe (153) is fixedly inserted between the pipe wall of the exhaust pipe (137) and the round cavity (151), an annular cavity (154) is arranged inside the base (1) and positioned outside the round cavity (151), a plurality of communication holes (155) are formed in the annular cavity (154) and the round cavity (151), and a gas pipe (156) is fixedly inserted into the cavity wall of the annular cavity (154).
6. The ICT test fixture opening and closing device according to claim 5, characterized in that the air storage mechanism (16) comprises a storage cavity (161) arranged in the top cover (2), a round piston (162) is slidably arranged in the storage cavity (161), a second spring (163) is fixedly arranged between the round piston (162) and the storage cavity (161), the lower end of the side wall of the storage cavity (161) is fixedly communicated with the air pipe (156), the bottom of the storage cavity (161) is fixedly communicated with the connecting hose (93), and a third normally-closed electromagnetic valve (164) is arranged at the pipe orifice of the connecting hose (93) in the storage cavity (161).
7. The ICT test fixture opening and closing device according to claim 1, wherein the marking assembly (17) comprises a liquid storage barrel (171) arranged on one side of the insulating substrate (4), a pushing piston (172) is slidably arranged in the liquid storage barrel (171), a liquid discharge pipe (173) is fixedly inserted into the upper end of the liquid storage barrel (171), the liquid outlet end of the liquid discharge pipe (173) extends to the lower side of the liquid storage barrel (171), a transverse pipe (174) is fixedly inserted into the air cavity (91) and the lower end of the side wall of the liquid storage barrel (171), and a second normally closed electromagnetic valve (175) is arranged in the transverse pipe (174).
8. An ICT test fixture opening and closing device according to claim 1, characterized in that the side walls of two hollow plates (12) are fixedly provided with a group of T-shaped supporting rods (19), and the rod walls of the same group of a plurality of T-shaped supporting rods (19) are connected with limiting plates (20) in a sliding manner.
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| CN202311401132.0A CN117129841B (en) | 2023-10-26 | 2023-10-26 | ICT test fixture device that opens and shuts |
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| CN202311401132.0A CN117129841B (en) | 2023-10-26 | 2023-10-26 | ICT test fixture device that opens and shuts |
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| CN117129841B true CN117129841B (en) | 2024-01-09 |
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| CN117640482B (en) * | 2024-01-26 | 2024-04-05 | 陕西恒光测控技术有限公司 | Communication module testing arrangement |
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