CN116125114A - Needle bed for electrical property test of circuit board - Google Patents
Needle bed for electrical property test of circuit board Download PDFInfo
- Publication number
- CN116125114A CN116125114A CN202310157709.1A CN202310157709A CN116125114A CN 116125114 A CN116125114 A CN 116125114A CN 202310157709 A CN202310157709 A CN 202310157709A CN 116125114 A CN116125114 A CN 116125114A
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- seat
- needle bed
- needle
- detection
- test
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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
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
- G01R1/073—Multiple probes
- G01R1/07307—Multiple probes with individual probe elements, e.g. needles, cantilever beams or bump contacts, fixed in relation to each other, e.g. bed of nails fixture or probe card
- G01R1/07314—Multiple probes with individual probe elements, e.g. needles, cantilever beams or bump contacts, fixed in relation to each other, e.g. bed of nails fixture or probe card the body of the probe being perpendicular to test object, e.g. bed of nails or probe with bump contacts on a rigid support
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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
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
- G01R1/073—Multiple probes
- G01R1/07307—Multiple probes with individual probe elements, e.g. needles, cantilever beams or bump contacts, fixed in relation to each other, e.g. bed of nails fixture or probe card
- G01R1/07357—Multiple probes with individual probe elements, e.g. needles, cantilever beams or bump contacts, fixed in relation to each other, e.g. bed of nails fixture or probe card with flexible bodies, e.g. buckling beams
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Leads Or Probes (AREA)
Abstract
The invention discloses a needle bed for electrical property test of a circuit board, which comprises a needle bed seat, wherein the needle bed seat is fixedly connected with a needle bed plate, an electricity receiving slot is arranged on the needle bed plate, a spring seat is inserted in the electricity receiving slot, a test needle is connected to the spring seat, a positioning groove is arranged on the side surface of the spring seat, an assembly rod is arranged in the needle bed plate, a movable frame is slidably arranged on the needle bed seat, a top plate is fixedly connected to the movable frame, the top plate is controlled to lift by a first push rod, a detection bracket is arranged at the bottom of the movable frame, a second nut seat is arranged in the detection bracket through a planar driving structure, a test needle detection structure is arranged on the second nut seat, a disassembly seat and a replacement seat are respectively arranged on two sides of the second nut seat, a test needle disassembly structure is arranged on the disassembly seat, and a test needle replacement structure is arranged on the replacement seat; the purpose of automatically checking whether the test needle is faulty or not, ensuring the accuracy of the circuit detection result and automatically disassembling and replacing the fault test needle can be achieved.
Description
Technical Field
The invention relates to the technical field of circuit board detection, in particular to a needle bed for testing the electrical property of a circuit board.
Background
Along with the introduction of surface mount technology, the packaging density of circuit boards has increased rapidly. Thus, even for a low density, general number of circuit boards, automatic inspection of the circuit boards is not only basic, but also economical. In complex circuit board testing, two common methods are the needle bed test and the double probe or flying probe test.
Wherein the needle bed test method is connected to each test point on the circuit board by probes with springs that give each probe a pressure of 100-200g to ensure that each test point is well contacted, such probes being arranged together as a "needle bed". Under the control of detection software, the detection points and detection signals can be programmed, and the inspector can learn the information of all the detection points.
However, in the current process of detecting the circuit board by using the needle bed, when the position of the probe is abnormal, the position of the circuit board corresponding to the probe is directly determined as a fault point, and whether the probe itself is faulty is unclear. Therefore, after detection, a fault may appear, but after investigation, the problem of the probe is found to occur, so that the normal electrical test work of the circuit board is affected, and the maintenance and replacement of the probe are also troublesome at present.
Disclosure of Invention
The invention aims to provide a needle bed for electrical testing of a circuit board, which aims to automatically check whether a test needle fails or not, ensure the accuracy of a circuit detection result and automatically detach and replace the failed test needle so as to solve the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a needle bed for circuit board electrical property test, includes the needle bed seat, fixedly connected with needle bed board on the needle bed seat, and be provided with the electricity receiving slot on the needle bed board, and connect to peg graft in the electricity receiving slot and have the spring holder, be connected with the test needle on the spring holder, and the spring holder top is provided with the electric piece that connects, the side of spring holder is provided with the constant head tank, and is provided with the assembly pole in the needle bed board, and fixedly connected with assembly spring on the assembly pole, slidable mounting has the movable frame on the needle bed seat, and fixedly connected with roof on the movable frame, and the roof goes up and down through first push rod control, the bottom of movable frame is provided with the detection support, and detects the support and be square frame, install the second nut seat through planar drive structure in the detection support, and second nut seat horizontal migration in the detection support, be provided with the test needle detection structure on the second nut seat, be provided with magnetism unblock structure to the assembly pole in the needle bed board, and the both sides of second seat are installed respectively and are dismantled the seat and are changed respectively, dismantle seat and change seat and install first electromagnetic seat and second electromagnetic seat and change, change and take down the structure that the test needle seat is provided with the pressure type on the detection seat.
Preferably, the needle bed seat is installed in the circuit board detection jig in a lifting manner, and the needle bed seat is driven to lift through the air cylinder, the needle bed plate is arranged on the bottom surface of the needle bed seat, the spring seat is vertically inserted into the bottom of the needle bed plate, a sliding groove is formed in the side surface of the spring seat in the needle bed plate, the assembly rod and the assembly spring are arranged in the sliding groove, and the end part of the assembly rod is connected in the positioning groove.
Preferably, the movable frame is connected to the side surfaces of the needle bed seat and the needle bed plate, the top plate and the detection support are respectively connected to the top and the bottom of the movable frame, and the first push rod is installed on the top surface of the needle bed seat.
Preferably, the plane driving structure comprises a first screw rod arranged on the detection support, a first nut seat is connected to the first screw rod, a sliding block is fixedly connected to the first nut seat and slidably mounted in a guide groove of the detection support, an adjusting rail is fixedly connected to the sliding block, a second screw rod is arranged in the adjusting rail, and the second nut seat is connected to the second screw rod.
Preferably, the first screw rod is arranged on the outer wall of the detection support, the first nut seat is slidably connected on the outer wall of the detection support, the sliding block penetrates through the guide groove to be arranged, the adjusting rail is slidably mounted inside the detection support, and the second nut seat is movably mounted in the adjusting rail.
Preferably, the test needle detection structure comprises a detection head arranged at the top of the second nut seat and a detection module arranged at the bottom of the second nut seat, wherein the detection head is electrically connected with the detection module, a detection circuit is arranged in the detection module, and a signal module is connected to the detection module.
Preferably, the magnetic unlocking structure comprises a wedge block arranged at the bottom of the assembling rod and a movable block arranged in the needle bed plate, wherein a push plate and a magnetic block are fixedly connected to the movable block, the movable block is arranged in the needle bed plate in a limiting sliding manner, the movable block is correspondingly arranged with the spring seat, the push plate is connected to an inclined plane of the wedge block, and the magnetic block is arranged on the bottom surface of the movable block.
Preferably, the test needle dismounting structure comprises an adsorption pipe sleeve arranged on the dismounting seat, an exhaust pipe is communicated with the adsorption pipe sleeve, and the adsorption pipe sleeve is arranged on the side face of the first electromagnetic seat.
Preferably, the test needle replacement structure comprises a fixed pipe arranged on a replacement seat, a spring support is slidably arranged in the fixed pipe, a support rod is annularly arranged on the spring support, a clamping jaw is rotatably arranged at the top of the support rod, a pull rope is fixedly connected to the spring support, the pull rope is fixedly connected to a pulling block, the pulling block is driven through a linear rail, and the fixed pipe is located on the side face of the second electromagnetic seat.
Compared with the prior art, the invention has the beneficial effects that:
1. the needle bed is arranged in the circuit testing jig, can move up and down, is connected with a circuit through the test needle arranged on the needle bed plate, performs electrical testing of the circuit board, is provided with the test structure for the test needle in a matching way, takes the movable frame as a main body, can drive the detection support at the bottom of the movable frame to move up and down through the driving of the first push rod, can separate the needle bed plate from the circuit board firstly when the test needle detects abnormality, then moves the detection support downwards to separate from the needle bed plate, performs fault detection of the test needle by utilizing the test needle detection structure in the detection support, can perform continuous testing of the circuit board without influencing the factors of the fault of the test needle, and ensures the detection accuracy of the circuit board.
2. According to the invention, the test needle is detachably mounted through the spring seat, and through the cooperation of magnetic force, the test needle can be automatically detached and replaced when the test needle is detected to be faulty, so that the normal operation of the detection work of the circuit board is ensured, firstly, the disassembly seat is driven to move to the lower part of the test needle through the plane driving structure according to the position of the test needle with the fault detected, the test needle with the fault is disassembled by utilizing the test needle disassembly structure on the disassembly seat, and after the faulty test needle is disassembled, the replacement seat can be moved to the original test needle position, and the test needle replacement structure is arranged on the replacement seat, so that the replacement work can be rapidly completed.
Drawings
Fig. 1 is a first schematic view of the assembled state of the needle bed according to the present invention.
Fig. 2 is a second schematic view of the assembled state of the needle bed according to the present invention.
Fig. 3 is a schematic view of the main structure of the needle bed according to the present invention.
FIG. 4 is a schematic view of the mounting structure of the test needle of the present invention.
Fig. 5 is a schematic view of the needle bed detecting structure of the present invention.
FIG. 6 is a schematic diagram of a detection support structure according to the present invention.
Fig. 7 is a first schematic view of a test seat structure according to the present invention.
FIG. 8 is a second schematic view of the structure of the test seat of the present invention.
Fig. 9 is a schematic diagram of a replacement structure according to the present invention.
Fig. 10 is a schematic view of the structure of the replacement seat of the present invention.
Fig. 11 is a schematic view of a lifting jaw structure of the present invention.
In the figure: the needle bed seat 1, the needle bed plate 2, the spring seat 3, the test needle 4, the electric connection piece 5, the positioning groove 6, the assembly rod 7, the assembly spring 8, the movable frame 9, the top plate 10, the first push rod 11, the detection support 12, the first screw rod 13, the first nut seat 14, the sliding block 15, the guide groove 16, the adjusting rail 17, the second screw rod 18, the second nut seat 19, the detection head 20, the detection module 21, the signal module 22, the wedge block 23, the movable block 24, the push plate 25, the magnetic block 26, the dismounting seat 27, the adsorption tube sleeve 28, the exhaust tube 29, the first electromagnetic seat 30, the replacement seat 31, the fixed tube 32, the spring support 33, the support rod 34, the clamping jaw 35, the pull rope 36, the pulling block 37, the linear rail 38 and the second electromagnetic seat 39.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, under the precondition of no conflict, new embodiments can be formed by any combination of the embodiments or technical features described below, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 11, the present invention provides a technical solution: the utility model provides a needle bed for circuit board electrical property test, including needle bed seat 1, fixedly connected with needle bed plate 2 on the needle bed seat 1, and be provided with on the needle bed plate 2 and connect electric slot, and connect to peg graft in the electric slot and have spring holder 3, be connected with test needle 4 on the spring holder 3, and the spring holder 3 top is provided with and connects electric sheet 5, the side of spring holder 3 is provided with constant head tank 6, and be provided with assembly pole 7 in the needle bed plate 2, and fixedly connected with assembly spring 8 on the assembly pole 7, slidable mounting has movable frame 9 on the needle bed seat 1, and fixedly connected with roof 10 on the movable frame 9, and roof 10 passes through first push rod 11 control lift, the bottom of movable frame 9 is provided with detection support 12, and detection support 12 is square frame, install second nut seat 19 through planar drive structure in the detection support 12, and second nut seat 19 is provided with test needle detection structure on detection support 12, be provided with magnetic unlocking structure to assembly pole 7 in the needle bed plate 2, and the both sides of second nut seat 19 are installed respectively and are dismantled seat 27 and change 31, dismantle seat 27 and change seat 31 and are installed on the first electromagnetic seat 39, it has the magnetic seat is changed seat and is changed and magnetic seat and is changed the structure.
The needle bed seat 1 is installed in the circuit board detection tool in a lifting manner, and the needle bed seat 1 is driven in a lifting manner through an air cylinder, the needle bed plate 2 is arranged on the bottom surface of the needle bed seat 1, the spring seat 3 is vertically inserted into the bottom of the needle bed plate 2, a sliding groove is formed in the side surface of the spring seat 3 in the needle bed plate 2, the assembly rod 7 and the assembly spring 8 are arranged in the sliding groove, and the end portion of the assembly rod 7 is connected in the positioning groove 6.
The needle bed of the invention takes the needle bed seat 1 as a main body structure, is installed in a circuit testing jig, can move up and down, is connected with a circuit through a test needle 4 installed on the needle bed plate 2, performs electrical testing of a circuit board, and the test needle 4 is detachably installed through a spring seat 3, the elastic force of an assembling spring 9 acts on an assembling rod 7, and the spring seat 3 and the test needle 4 are installed at the bottom of the needle bed plate 2 through the connection of the assembling rod 7 and a positioning groove 6.
The movable frame 9 is connected to the side surfaces of the needle bed seat 1 and the needle bed plate 2, the top plate 10 and the detection support 12 are respectively connected to the top and the bottom of the movable frame 9, and the first push rod 11 is installed on the top surface of the needle bed seat 1.
According to the invention, the needle bed seat 1 is provided with a test structure for the test needle 4 in a matching way, the test structure takes the movable frame 9 as a main body, the detection support 12 at the bottom of the movable frame 9 can be driven to move up and down by the driving of the first push rod 11, the area of the detection support 12 is larger than that of the needle bed plate 2, under normal conditions, the detection support 12 can be sleeved outside the needle bed plate 2 in an upward moving way, when the test needle 4 detects an abnormality, the needle bed plate 2 can be separated from a circuit board, then the detection support 12 can be separated from the needle bed plate 2 in a downward moving way, the fault detection of the test needle is carried out by utilizing the test needle detection structure in the detection support 12, the process is generally carried out in the process of entering and exiting of the circuit board, the continuity test of the circuit board is not influenced, the fault factors of the test needle 4 can be removed timely, and the detection accuracy of the circuit board is ensured.
The plane driving structure comprises a first screw rod 13 arranged on a detection support 12, a first nut seat 14 is connected to the first screw rod 13, a sliding block 15 is fixedly connected to the first nut seat 14, the sliding block 15 is slidably mounted in a guide groove 16 of the detection support 12, an adjusting rail 17 is fixedly connected to the sliding block 15, a second screw rod 18 is arranged in the adjusting rail 17, and the second nut seat 19 is connected to the second screw rod 18.
According to the position of the test needle 4 with the fault detected, the second nut seat 19 can be driven by the plane driving structure to move to the bottom of the test needle 4, and the fault detection of the test needle 4 is performed by the test needle detection structure on the second nut seat 19.
The first lead screw 13 sets up on the outer wall of detecting support 12, and first nut seat 14 sliding connection is on the outer wall of detecting support 12, and slider 15 runs through guide way 16 and sets up, and regulation rail 17 slidable mounting is in the inside of detecting support 12, and second nut seat 19 movable mounting is in regulation rail 17.
In the plane driving structure, the first screw rod 13 controls the first nut seat 14 to accurately displace, so that the adjusting rail 17 is driven to move to the corresponding position, and the second screw rod 18 in the adjusting rail 17 can drive the second nut seat 19 to move in the direction perpendicular to the first nut seat 14, so that the effect that the second nut seat 19 can accurately move to any position in the detection support 12 is achieved.
The test needle detection structure comprises a detection head 20 arranged at the top of the second nut seat 19 and a detection module 21 arranged at the bottom of the second nut seat 19, wherein the detection head 20 is electrically connected with the detection module 21, a detection circuit is arranged in the detection module 21, and a signal module 22 is connected on the detection module 21.
When the second nut seat 19 moves to the bottom of the test needle 4, the detection support 12 moves upwards, the detection head 20 on the second nut seat 19 is connected with the test needle 4, the test needle 4 is connected into a detection circuit of the detection module 21, the detection result is fed back through the signal module 22, if the test needle 4 has no problem, the circuit board is determined to have a problem, otherwise, the circuit board is required to be further detected.
The magnetic unlocking structure comprises a wedge block 23 arranged at the bottom of the assembling rod 7 and a movable block 24 arranged in the needle bed plate 2, wherein a push plate 25 and a magnetic block 26 are fixedly connected to the movable block 24, the movable block 24 is arranged in the needle bed plate 2 in a limiting sliding manner, the movable block 24 is arranged corresponding to the spring seat 3, the push plate 25 is connected to the inclined surface of the wedge block 23, and the magnetic block 26 is arranged on the bottom surface of the movable block 24.
According to the invention, besides fault detection of the test needle 4, disassembly and replacement of the test needle 4 can be performed, the test needle 4 and the spring seat 3 are fixed through the assembly rod 7, when the magnetic block 26 in the magnetic unlocking structure moves upwards under the action of magnetic force, the assembly rod 7 can be pushed along the wedge block 23 through the push plate 25, the assembly rod 7 overcomes the elastic force of the assembly spring 8 to push and separate from the positioning groove 6, and the spring seat 3 can be detached from the needle bed plate 2 for replacement.
The test needle disassembling structure comprises an adsorption tube sleeve 28 arranged on a disassembling seat 27, an exhaust tube 29 is communicated with the adsorption tube sleeve 28, and the adsorption tube sleeve 28 is arranged on the side face of a first electromagnetic seat 30.
When it is determined that the test needle 4 has a problem, the disassembly seat 27 moves to the lower side of the test needle 4 along with the second nut seat 19, and at the moment, the first electromagnetic seat 30 is electrified, so that the spring seat 3 and the test needle 4 fall off, the adsorption pipe sleeve 28 is sleeved at the bottom of the test needle 4, negative pressure is generated in the adsorption pipe sleeve 28 by the air suction pipe 29, the test needle 4 with a fault and the spring seat 3 are further fixed, and the disassembly work of the test needle 4 with the fault is completed.
The test needle replacing structure comprises a fixed tube 32 arranged on a replacing seat 31, a spring support 33 is slidably arranged in the fixed tube 32, a supporting rod 34 is annularly arranged on the spring support 33, a clamping jaw 35 is rotatably arranged at the top of the supporting rod 34, a pull rope 36 is fixedly connected to the spring support 33, the pull rope 36 is fixedly connected to a pulling block 37, the pulling block 37 is driven through a linear track 38, and the fixed tube 32 is positioned on the side face of a second electromagnetic seat 39.
The invention can further replace the test needle 4, after the failed test needle 4 is disassembled, the replacement seat 31 can be moved to the original test needle position through the second nut seat 19, the fixing tube 32 is arranged on the replacement seat 31, the lifting type clamping jaw 35 is arranged in the fixing tube 32, the new test needle 4 is inserted into the fixing tube 32 together with the spring seat 3, the spring support 33 is pulled down by the pulling block 37 and the pull rope 36, the clamping jaw 35 is retracted into the fixing tube 32, all clamping jaws 35 are limited by the fixing tube 32 to retract inwards to fix the test needle 4, when the test needle 4 is replaced, the detection support 12 is moved up to butt the spring seat 3 in the fixing tube 32 and the test needle 4 into the electric receiving slot of the needle bed plate 2, then the second electromagnetic seat 39 is electrified to push the assembly rod 7, and meanwhile the pulling block 37 is used for loosening the pull rope 36 to release the clamping jaw 35, and the spring seat 33 is pushed up to fix the test needle 4 into the needle bed plate 2 through the spring seat 3, so that the replacement work is completed.
The invention is used when in use: firstly, the needle bed of the invention takes the needle bed seat 1 as a main body structure, is installed in a circuit testing jig, can move up and down, is connected with a circuit through a test needle 4 installed on a needle bed plate 2, performs the electrical test of a circuit board, and the test needle 4 is detachably installed through a spring seat 3, the elastic force of an assembling spring 9 acts on an assembling rod 7, the spring seat 3 and the test needle 4 are installed at the bottom of the needle bed plate 2 through the connection of the assembling rod 7 and a positioning groove 6, the invention is provided with a test structure for the test needle 4 on the needle bed seat 1 in a matching way, the test structure takes a movable frame 9 as a main body, can drive a detection bracket 12 at the bottom of the movable frame 9 to move up and down through the driving of a first push rod 11, the area of the detection bracket 12 is larger than that of the needle bed plate 2, under normal conditions, the detection bracket 12 can move up and sleeve outside the needle bed plate 2, when the test needle 4 detects an abnormality, the needle bed plate 2 can be firstly moved upwards to be separated from the circuit board, then the detection support 12 is moved downwards to be separated from the needle bed plate 2, the fault detection of the test needle is carried out by utilizing the test needle detection structure in the detection support 12, the process is generally carried out in the process of entering and exiting the circuit board, the continuity test of the circuit board is not influenced, the fault factors of the test needle 4 can be timely eliminated, the detection accuracy of the circuit board is ensured, the second nut seat 19 can be driven to move to the bottom of the test needle 4 through the plane driving structure according to the position of the test needle 4 with the fault detection, the fault detection of the test needle 4 is carried out through the test needle detection structure on the second nut seat 19, in the plane driving structure, the first nut seat 14 is controlled to be accurately displaced through the first screw rod 13, and then the adjusting rail 17 is driven to move to the corresponding position, the second screw rod 18 in the adjusting rail 17 can drive the second nut seat 19 to move in the direction perpendicular to the first nut seat 14, so that the effect that the second nut seat 19 can precisely move to any position in the detecting bracket 12 is achieved, when the second nut seat 19 moves to the bottom of the test needle 4, the detecting head 20 on the second nut seat 19 can be connected with the test needle 4 through the upward movement of the detecting bracket 12, the test needle 4 is connected into a detecting circuit of the detecting module 21, the detecting result is fed back through the signal module 22, if the test needle 4 has no problem, the circuit board is determined to have the problem, otherwise, the circuit board is required to be further detected, besides the fault detection of the test needle 4, the disassembly and the replacement of the test needle 4 can be also carried out, the test needle 4 and the spring seat 3 are fixed through the assembling rod 7, when the magnetic block 26 in the magnetic unlocking structure moves upwards under the action of magnetic force, the push plate 25 can push the assembly rod 7 along the wedge block 23, the assembly rod overcomes the elastic force of the assembly spring 8 and is separated from the positioning groove 6, the spring seat 3 can drop from the needle bed plate 2 for replacement, when the test needle 4 is determined to be in a problem, the disassembly seat 27 moves to the lower part of the test needle 4 along with the second nut seat 19, the first electromagnetic seat 30 is electrified at the moment, the spring seat 3 and the test needle 4 can drop, the adsorption sleeve 28 is sleeved at the bottom of the test needle 4, the suction tube 29 is utilized to generate negative pressure in the adsorption sleeve 28, the test needle 4 with the fault and the spring seat 3 are further fixed, the disassembly work of the test needle 4 is completed, the invention can further replace the test needle 4, after the test needle 4 with the fault is disassembled, the replacement seat 31 can be moved to the original test needle position through the second nut seat 19, the fixing tube 32 is arranged on the replacement seat 31, the lifting type clamping jaw 35 is arranged in the fixing tube 32, the new test needle 4 and the spring seat 3 are inserted into the fixing tube 32, the spring support 33 is pulled downwards by the pulling block 37 and the pull rope 36, the clamping jaw 35 can retract into the fixing tube 32 under the limit of the fixing tube 32, all the clamping jaws 35 retract inwards to fix the test needle 4, when the test needle is replaced, the spring seat 3 in the fixing tube 32 and the test needle 4 are abutted into the power receiving slot of the needle bed plate 2 by utilizing the upward movement of the detection support 12, then the second electromagnetic seat 39 is electrified to push the assembly rod 7, the pull rope 36 is loosened by the pulling block 37, the spring support 33 moves upwards on one hand, and on the other hand, the test needle 4 is pushed upwards, so that the test needle 4 is fixed in the needle bed plate 2 through the spring seat 3, and the replacement work is completed.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but various modifications can be made by those skilled in the art without inventive effort from the above concepts, and all modifications are within the scope of the present invention.
Claims (9)
1. The utility model provides a needle bed for electrical testing of circuit board, includes needle bed seat (1), its characterized in that: the utility model discloses a magnetic needle bed seat, including needle bed seat (1), needle bed seat (2), needle bed seat (1) are last fixedly connected with needle bed plate (2), and are provided with electric slot on needle bed plate (2), and connect in the electric slot to peg graft there is spring holder (3), be connected with test needle (4) on spring holder (3), and spring holder (3) top is provided with electric piece (5), the side of spring holder (3) is provided with constant head tank (6), and is provided with assembly pole (7) in needle bed plate (2), and fixedly connected with assembly spring (8) on assembly pole (7), slidable mounting has movable frame (9) on needle bed seat (1), and fixedly connected with roof (10) on movable frame (9), and roof (10) are gone up and down through first push rod (11) control, the bottom of movable frame (9) is provided with detection support (12), and detection support (12) are square frame, install second nut seat (19) through planar drive structure in detection support (12), and second nut seat (19) horizontal migration in detection support (12), second nut seat (19) is provided with in order to change magnetic nut seat (31) respectively, and the magnetic needle bed seat (31) is installed in order to change in the second needle bed seat (27), the disassembly seat (27) and the replacement seat (31) are respectively provided with a first electromagnetic seat (30) and a second electromagnetic seat (39), the disassembly seat (27) is provided with an adsorption type test needle disassembly structure, and the replacement seat (31) is provided with a top pressure type test needle replacement structure.
2. The needle bed for electrical testing of circuit boards of claim 1, wherein: the lifting type needle bed seat (1) is installed in a circuit board detection jig, the needle bed seat (1) is driven to lift through a cylinder, the needle bed plate (2) is arranged on the bottom surface of the needle bed seat (1), a spring seat (3) is vertically inserted into the bottom of the needle bed plate (2), a sliding groove is formed in the side surface of the spring seat (3) in the needle bed plate (2), an assembly rod (7) and an assembly spring (8) are arranged in the sliding groove, and the end portion of the assembly rod (7) is connected to the positioning groove (6).
3. The needle bed for electrical testing of circuit boards of claim 1, wherein: the movable frame (9) is connected to the side surfaces of the needle bed seat (1) and the needle bed plate (2), the top plate (10) and the detection support (12) are respectively connected to the top and the bottom of the movable frame (9), and the first push rod (11) is installed on the top surface of the needle bed seat (1).
4. The needle bed for electrical testing of circuit boards of claim 1, wherein: the plane driving structure comprises a first screw rod (13) arranged on a detection support (12), a first nut seat (14) is connected to the first screw rod (13), a sliding block (15) is fixedly connected to the first nut seat (14), the sliding block (15) is slidably mounted in a guide groove (16) of the detection support (12), an adjusting rail (17) is fixedly connected to the sliding block (15), a second screw rod (18) is arranged in the adjusting rail (17), and the second nut seat (19) is connected to the second screw rod (18).
5. The needle bed for electrical testing of circuit boards of claim 4, wherein: the first screw rod (13) is arranged on the outer wall of the detection support (12), the first nut seat (14) is slidably connected on the outer wall of the detection support (12), the sliding block (15) penetrates through the guide groove (16) to be arranged, the adjusting rail (17) is slidably mounted in the detection support (12), and the second nut seat (19) is movably mounted in the adjusting rail (17).
6. The needle bed for electrical testing of circuit boards of claim 1, wherein: the test needle detection structure comprises a detection head (20) arranged at the top of the second nut seat (19) and a detection module (21) arranged at the bottom of the second nut seat (19), wherein the detection head (20) is electrically connected with the detection module (21), a detection circuit is arranged in the detection module (21), and a signal module (22) is connected to the detection module (21).
7. The needle bed for electrical testing of circuit boards of claim 1, wherein: the magnetic unlocking structure comprises a wedge block (23) arranged at the bottom of an assembling rod (7) and a movable block (24) arranged in a needle bed plate (2), wherein a push plate (25) and a magnetic block (26) are fixedly connected to the movable block (24), the movable block (24) is arranged in the needle bed plate (2) in a limiting sliding mode, the movable block (24) is arranged corresponding to the spring seat (3), the push plate (25) is connected to the inclined surface of the wedge block (23), and the magnetic block (26) is arranged on the bottom surface of the movable block (24).
8. The needle bed for electrical testing of circuit boards of claim 1, wherein: the test needle dismounting structure comprises an adsorption pipe sleeve (28) arranged on a dismounting seat (27), an exhaust pipe (29) is communicated with the adsorption pipe sleeve (28), and the adsorption pipe sleeve (28) is arranged on the side face of a first electromagnetic seat (30).
9. The needle bed for electrical testing of circuit boards of claim 1, wherein: the test needle replacement structure comprises a fixed tube (32) arranged on a replacement seat (31), a spring support (33) is slidably arranged in the fixed tube (32), a support rod (34) is annularly arranged on the spring support (33), a clamping jaw (35) is rotatably arranged at the top of the support rod (34), a pull rope (36) is fixedly connected to the spring support (33), the pull rope (36) is fixedly connected to a pulling block (37), the pulling block (37) is driven through a linear track (38), and the fixed tube (32) is located on the side face of a second electromagnetic seat (39).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310157709.1A CN116125114A (en) | 2023-02-23 | 2023-02-23 | Needle bed for electrical property test of circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310157709.1A CN116125114A (en) | 2023-02-23 | 2023-02-23 | Needle bed for electrical property test of circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116125114A true CN116125114A (en) | 2023-05-16 |
Family
ID=86311689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310157709.1A Pending CN116125114A (en) | 2023-02-23 | 2023-02-23 | Needle bed for electrical property test of circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116125114A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116338438A (en) * | 2023-05-17 | 2023-06-27 | 盐城声科超声科技有限公司 | Intelligent electronic component testing equipment |
-
2023
- 2023-02-23 CN CN202310157709.1A patent/CN116125114A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116338438A (en) * | 2023-05-17 | 2023-06-27 | 盐城声科超声科技有限公司 | Intelligent electronic component testing equipment |
| CN116338438B (en) * | 2023-05-17 | 2024-01-19 | 盐城声科超声科技有限公司 | Intelligent electronic component testing equipment |
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