CN209673949U - A kind of pcb board test machine - Google Patents

Abstract

The utility model discloses a kind of pcb board test machine, test machine includes rack, handle setting plate, top plate, handle, supporting plate, supporting plate spring, thimble terminal plate, thimble, mandril and support plate guide post；The lower end surface of the rack is equipped with thimble, lower section, the top of the thimble are respectively equipped with thimble terminal plate, supporting plate, the supporting plate is by supporting plate spring supporting, the handle setting plate is located at the top position of rack, the handle setting plate is equipped with handle, the handle, at its lower end is equipped with thimble fixing piece, thimble fixing piece lower end is equipped with mandril, the mandril is corresponding with the position of the thimble, pcb board is placed between the mandril and the thimble, it is equipped with through-hole on rear side of the handle setting plate and thimble fixing piece, so that the cooperation of support plate guide post is worn.A kind of pcb board test machine provided by the utility model, can make operation simple type identifier.

Description

A kind of pcb board test machine

Technical field

The utility model relates to pcb board the field of test technology, especially a kind of pcb board test machine.

Background technique

PCB circuit board, also known as printed circuit board are the suppliers of electronic component electrical connection, and therefore, PCB is very heavy The electronic component wanted.When a piece of PCB needs detect multiple contacts above, (1) wiring is still had the disadvantage that Step trouble, wrong easy burn-out plank；(2) test pencil is easily sliding contacts that the device solder joint on PCBA other than test point causes short circuit Device failure；(3) point-by-point Effect on Detecting is low, leakiness.

Utility model content

In order to solve the above technical problems, the utility model provides a kind of pcb board test machine.

The technical solution of the utility model are as follows: a kind of pcb board test machine, test machine include rack, handle setting plate, top Plate, handle, supporting plate, supporting plate spring, thimble terminal plate, thimble, mandril and support plate guide post；The lower end surface of the rack is equipped with Thimble, lower section, the top of the thimble are respectively equipped with thimble terminal plate, supporting plate, and the supporting plate is by supporting plate spring supporting, the hand Handle fixed plate is located at the top position of rack, and the handle setting plate is equipped with handle, and the handle, at its lower end is fixed equipped with thimble Part, thimble fixing piece lower end are equipped with mandril, and the mandril is corresponding with the position of the thimble, the mandril and the top It is placed with pcb board between needle, through-hole is equipped on rear side of the handle setting plate and thimble fixing piece, for support plate guide post Cooperation is worn；

Test machine connects IGBT module, the end C1, E1, G1, G2, E2 connection of the IGBT module and driving plate, the drive The end C1, E1 of movable plate is connect with the positive terminal of adjustable stabilized voltage supply 2, the end GND respectively, and the driving plate is equipped with and 12 core rectangles 4 cores of the port that plug connects, the 12 core rectangular insert are connect with multimeter, 2,12,6 cores of the 12 core rectangular insert Respectively with turn round sub switch K1, K2, K3 connect, it is described torsion sub switch K1, K2 and K3 the other end respectively with adjustable stabilized voltage supply 1 Positive terminal, the end GND connection, 5,11 cores of the 12 core rectangular insert respectively with turn round sub switch K4, K5 connect, torsion is opened The positive terminal of the other end and signal generator that close K4, K5 connects, 1 core of the 12 core rectangular insert respectively with it is described adjustable steady The end the GND connection at the end GND, the signal generator of voltage source 1.

Preferably, the thimble fixing piece includes top plate guide post, guide post support plate, support column, support plate, the top Plate guide post is set to the handle, at its lower end, and the guide post support plate is set to top plate guide post lower end, and the support column is set In guide post support plate lower end, the support plate is set to the support column lower end, and the support plate lower end is equipped with mandril.

Preferably, it is equipped with through-hole on rear side of the mandril, so that the cooperation of support plate guide post is worn.Preferably, described Key is additionally provided in rack.

Preferably, the model TEA277100400 of the driving plate.

Compared with prior art, the utility model has the following beneficial effects:

(1) connection type for improving PCB and each instrument, makes operation simple type identifier；

(2) PCB positioning, probe fixed point are without leakage；

(3) preventing improves connecting terminal causes to burn out extremely.

Detailed description of the invention

Fig. 1 is the pcb board test machine main view of the utility model.

Fig. 2 is the pcb board test machine left view of the utility model.

Fig. 3 is the pcb board test machine line map of the utility model.

Specific embodiment

With reference to the accompanying drawing and specific embodiment, the utility model is described further.

As shown in Figure 1 to Figure 3, a kind of pcb board test machine, test machine include rack 1, handle setting plate 2, top plate 3, handle 5, supporting plate 10, supporting plate spring 11, key 12, thimble terminal plate 13, thimble 14, mandril 15 and support plate guide post 4；Rack 1 Lower end surface is equipped with thimble 14, and lower section, the top of thimble 14 are respectively equipped with thimble terminal plate 13, supporting plate 10, and supporting plate 10 is by supporting plate bullet Spring 11 supports, and handle setting plate 2 is located at rack top position, and handle setting plate 2 is equipped with handle 5, and 5 lower end of handle is equipped with top Needle fixing piece, thimble fixing piece lower end are equipped with mandril 15, and mandril 15 is corresponding with the position of thimble 14, and mandril 15 and thimble It is placed with pcb board between 14, is equipped with through-hole on rear side of handle setting plate 2 and thimble fixing piece, so that support plate guide post 4 is matched It is suitable to set, key 12 is additionally provided in rack 1.

This thimble fixing piece includes top plate guide post 6, guide post support plate 7, support column 8, support plate 9, top plate guide post 6 Set on 5 lower end of handle, guide post support plate 7 is set to 6 lower end of top plate guide post, and support column 8 is set to 7 lower end of guide post support plate, Support plate 9 is set to 8 lower end of support column, and 9 lower end of support plate is equipped with mandril 15.The rear side of mandril 15 is equipped with through-hole, for support The cooperation of plate guide post 4 is worn.

Test machine connects IGBT module, the end C1, E1, G1, G2, E2 company of IGBT module and TEA277100400 driving plate It connects, the end C1, E1 of driving plate is connect with the positive terminal of adjustable stabilized voltage supply 2, the end GND respectively, and driving plate is equipped with and 12 core squares 4 cores of the port that shape plug (12CPT-B-2A) connects, 12 core rectangular inserts are connect with multimeter, 12 core rectangular inserts 2, 12,6 cores respectively with turn round sub switch K1, K2, K3 connect, torsion sub switch K1, K2 and K3 the other end respectively with adjustable stabilized voltage supply 1 positive terminal, the connection of the end GND, 5,11 cores of 12 core rectangular inserts respectively with turn round sub switch K4, K5 and connect, torsion sub switch K4, K5 The other end and signal generator positive terminal connect, 1 core of 12 core rectangular inserts respectively with the end GND of adjustable stabilized voltage supply 1, The end GND of signal generator connects.

The working principle of the utility model are as follows:

(1) 15V power supply is provided to product, output voltage range is 15V ± 0.5V；

(2) push and pull bar crimping acts；

(3) probe circuitry connects；

(4) square wave that offer 4KHZ amplitude reaches 15V provides power supply, 4 roads of acquisition electricity to product by adjustable stabilized voltage supply Press numerical value and waveform signal；

(5) single control switch controls the on-off of each route；

(6) fixed tested PCB A.

This test machine connects IGBT (Insulated Gate Bipolar Translator, insulated gate bipolar crystal Pipe), inputting 15V voltage by adjustable stabilized voltage supply PS-305D makes driving plate PCBA energization operation, connects signal generator RIGOLDG1032 (signal generator) inputs frequency 4kHz and simulates square wave, connects the logical of different routes by switch control PCBA It is disconnected, the output voltage and signal waveform of PCBA are gone out with multimeter and oscilloscope.

Fig. 3 is this debugging system connection figure.Debugging is it should be noted that INA corresponding is G1, E1, C1 when two-way is independently debugged All the way, it is G2, E2, C2 that INB is corresponding；It is same terminal for IGBT, E1 and C2.

Dielectric test

Circuit debugging prepares: adjusting 1 output voltage of adjustable stabilized voltage supply is 15V ± 0.5V.

Adjustment signal generator exports square wave, and waveform passes through oscilloscope display, frequency 4kHz, duty ratio 50%, side Wave amplitude need to reach 15V.

C1, E1, G1 of driving plate, C2, E2, G2 are respectively connected in IGBT module (note: the C2 and E1 of IGBT is same One pin).Plug in X1, K1 closure.Red light emitting diodes (LED1, LED2) Ying Faliang.

Band IGBT is debugged

Only closure K1, K3, K4, detects the signal of VG1E1, and high level range 14V~15.5V, low level range -7V~- 9.5V.VG1E1 impulse waveform is unfolded, it is desirable that test waveform profile is without obvious distortion.K3 is disconnected, the signal of VG1E1 is detected, should be Low level (range -7V~-9.5V).

Only closure K1, K3, K5, detects the signal of VG2E2, and high level range 14V~15.5V, low level range -7V~- 9.5V.VG1E1 impulse waveform is unfolded, it is desirable that test waveform profile is without obvious distortion.K3 is disconnected, the signal of VG2E2 is detected, should be Low level (range -7V~-9.5V).

The short-circuit protection of IGBT is debugged

Disconnect the connection of IGBT and driving plate.

When debugging INB, the output of power supply 2 is first adjusted to 0V, power supply 2+,-it exports and terminates to C2 (E1), E2, In A 1k Ω resistance is concatenated between C2, E2.With multimeter measuring signal WE_ERR (being with reference to ground with the GND of power supply 1).Closure K1, Then K3, K5 are gradually increased 2 output voltage of power supply, WE_ERR can be raised to 10V or more from 0V, and the voltage VC2E2 between C2, E2 is answered For 5V (range: 4V~6V).Then the voltage of power supply 2 is reduced to 0V, and pulse signal should be reverted to by detecting VG2E2.

When debugging INA, the output of power supply 2 is first adjusted to 0V, power supply 2+,-it exports and terminates to C1, E1, in C1, E1 Between concatenate a 1k Ω resistance.With multimeter measuring signal WE_ERR (being with reference to ground with the GND of power supply 1).It is closed K1, K3, K4, Then it is gradually increased 2 output voltage of power supply, WE_ERR can be raised to 10V or more from 0V, and the voltage VC1E1 between C1, E1 should be 5V (range: 4V~6V).Then the voltage of power supply 2 is reduced to 0V, and pulse signal should be reverted to by detecting VG1E1.

Note: must not simultaneously between C1 and E1, C2 and E2 series resistor.Since the opto-coupler chip in driving plate has certainly Reset function, gate signal when short-circuit protection will appear overshoot；After eliminating short trouble, pulse can restore automatically.Failure Pulse amplitude is unstable to belong to normal phenomenon.

+ 5V power supply test

Disconnect the connection of IGBT and driving plate.

Voltage is output and input with SMD linear voltage regulator in multimeter voltage gear test product.It is+8V (model that it, which is inputted, Enclose: 7.5V~9V), it exports as+5V (range: 4.8V~5.2V).Back side test point is+8V ,+5V and any GND.

Debugging terminates.

The above embodiments are only the preferred embodiment of the utility model, and the right of the utility model cannot be limited with this Range, therefore, modification made according to the patent scope of the utility model, equivalent variations, improvement etc. still belong to the utility model institute The range covered.

Claims (5)

1. a kind of pcb board test machine, it is characterised in that: test machine includes rack, handle setting plate, top plate, handle, supporting plate, support Flat spring, thimble terminal plate, thimble, mandril and support plate guide post；The lower end surface of the rack is equipped with thimble, the thimble Lower section, top are respectively equipped with thimble terminal plate, supporting plate, and the supporting plate is located at machine by supporting plate spring supporting, the handle setting plate The top position of frame, the handle setting plate are equipped with handle, and the handle, at its lower end is equipped with thimble fixing piece, and the thimble is fixed Part lower end is equipped with mandril, and the mandril is corresponding with the position of the thimble, is placed with PCB between the mandril and the thimble It is equipped with through-hole on rear side of plate, the handle setting plate and thimble fixing piece, so that the cooperation of support plate guide post is worn；

Test machine connects IGBT module, the end C1, E1, G1, G2, E2 connection of the IGBT module and driving plate, the driving plate The end C1, E1 connect respectively with the positive terminal of adjustable stabilized voltage supply 2, the end GND, the driving plate be equipped with and 12 core rectangular inserts 4 cores of the port to connect, the 12 core rectangular insert are connect with multimeter, 2,12,6 cores of the 12 core rectangular insert respectively with Turn round sub switch K1, K2, K3 connection, the other end for turning round sub switch K1, the K2 and K3 anode with adjustable stabilized voltage supply 1 respectively End, the connection of the end GND, 5,11 cores of the 12 core rectangular insert are connect with torsion sub switch K4, K5 respectively, the torsion sub switch K4, The other end of K5 and the positive terminal of signal generator connect, and 1 core of the 12 core rectangular insert is electric with the adjustable pressure stabilizing respectively The end the GND connection at the end GND, the signal generator in source 1.

2. a kind of pcb board test machine according to claim 1, it is characterised in that: the thimble fixing piece includes that top plate is led Xiang Zhu, guide post support plate, support column, support plate, the top plate guide post are set to the handle, at its lower end, the guide post support Plate is set to top plate guide post lower end, and the support column is set to guide post support plate lower end, and the support plate is set to institute Support column lower end is stated, the support plate lower end is equipped with mandril.

3. a kind of pcb board test machine according to claim 2, it is characterised in that: it is equipped with through-hole on rear side of the mandril, So that the cooperation of support plate guide post is worn.

4. a kind of pcb board test machine according to claim 1, it is characterised in that: be additionally provided with key in the rack.

5. a kind of pcb board test machine according to claim 1, it is characterised in that: the model of the driving plate TEA277100400。