CN218524860U - Wave-soldering false welding spot detection mechanism - Google Patents

Abstract

The utility model relates to a solder joint detects technical field, and discloses a wave-soldering solder joint detection mechanism that lacks, comprising a base plate, install lateral shifting mechanism on the bottom plate, longitudinal shifting mechanism is installed at the top of lateral shifting structure, longitudinal shifting mechanism's bilateral symmetry is installed and is placed the board, every place and all install fixture on the board, two are placed and are equipped with detection mechanism between the board, detection mechanism installs on the bottom plate, this wave-soldering solder joint detection mechanism that lacks owing to set up fixture, and has one section distance between fixture and the bottom plate consequently can not produce the friction when adjusting the circuit board with the bottom plate, reduce the damage to the circuit board, can keep the circuit board on a relative horizontally plane simultaneously, conveniently detect, and can further conveniently adjust the circuit board owing to set up lateral shifting mechanism and longitudinal shifting mechanism and detect.

Description

Wave-soldering false welding spot detection mechanism

Technical Field

The utility model relates to a solder joint technical field specifically is a wave-soldering solder joint detection mechanism that lacks.

Background

Wave soldering refers to the soldering of mechanically and electrically connecting the soldering end or pin of a component and the pad of a printed board by injecting nitrogen into a solder pool, wherein the molten soft solder is jetted into a solder wave required by design through an electric pump or an electromagnetic pump, and the solder wave can also be formed by injecting nitrogen into the solder pool, so that the printed board which is pre-provided with the component passes through the solder wave.

The general flow of wave soldering is divided into: inserting into the corresponding component hole → pre-coating flux → preheating (temperature 90-100 ℃, length 1-1.2 m) → wave soldering (220-240 ℃) cooling → cutting off the excess card foot → inspecting.

And whether the solder joint on the detection circuit board has the false solder or not is detected in the process of inspection, the false solder is detected, because the false solder is because bad conditions appear in the solder joint, automatic detection or manual detection is always carried out, the automatic detection comprises AOI detection equipment or X-ray detection equipment, but because the cost of the current detection equipment is generally higher, some manufacturers also carry out traditional manual detection.

The manual detection is to place the circuit board that will wait to detect on detecting the plane promptly, contact to the welding position through two detections, in order to form the conduction loop, voltage detector through on this return circuit detects the voltage on this return circuit, thereby judge whether have the condition of rosin joint, and current circuit board solder joint is more, consequently often need adjust the position of circuit board when detecting, however, electrical components on the circuit board is more, lead to the circuit board can't keep in a relative horizontally position, and can produce the friction when adjusting the removal to the circuit board between electrical components and the detection, electrical components who has welded also has certain damage, it is inconvenient to detect it.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a wave-soldering solder joint detection mechanism possesses the circuit board of conveniently treating the detection and adjusts to reduce advantages such as circuit board damage when adjusting, solved current circuit board and adjusted inconvenient and damage the problem of circuit board easily when adjusting in the detection.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a wave-soldering solder joint detection mechanism that lacks, includes the bottom plate, install lateral shifting mechanism on the bottom plate, longitudinal movement mechanism is installed at the top of lateral shifting structure, longitudinal movement mechanism's bilateral symmetry is installed and is placed the board, every place and all install fixture on the board, two are placed and are equipped with detection mechanism between the board, detection mechanism installs on the bottom plate.

Preferably, the transverse moving mechanism comprises a first slide rail and a first slide block, the first slide rail is fixed on the bottom plate, the first slide block is slidably mounted inside the first slide rail, and the longitudinal moving mechanism is mounted on the first slide block.

Preferably, the longitudinal moving mechanism includes a second sliding block and a second sliding rail, the second sliding rail is fixed on the first sliding block, the second sliding block is slidably mounted inside the second sliding rail, and the placing plate is fixed on the second sliding block.

Preferably, the clamping mechanism comprises a screw and a clamping plate, the screw is rotatably mounted on the placing plate, and the clamping plate is mounted on the screw in a threaded manner.

Preferably, detection mechanism includes mounting bracket, sleeve, push rod, voltage detector and probe, the mounting bracket is fixed on the bottom plate, voltage detector fixes on the mounting bracket, the sleeve symmetry is installed in the mounting bracket, every telescopic inside equal slidable mounting has the probe, the push rod is installed at the top of probe.

Preferably, a spring is arranged between the push rod and the probe.

To sum up, the utility model discloses a following beneficial effect:

this wave-soldering solder joint detection mechanism, owing to set up fixture, and it has a section distance to separate between fixture and the bottom plate, consequently can not produce the friction between with the bottom plate when adjusting the circuit board, reduce the damage to the circuit board, can keep the circuit board simultaneously on a relative horizontally plane, conveniently detect, and owing to set up lateral shifting mechanism and longitudinal movement mechanism and can further conveniently adjust the circuit board and detect.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic side view of the present invention;

fig. 3 is a schematic front sectional view of the present invention.

Wherein: 1. a base plate; 2. a lateral movement mechanism; 3. a longitudinal movement mechanism; 4. placing the plate; 5. a clamping mechanism; 6. a detection mechanism; 7. a first slider; 8. a first slide rail; 9. a second slider; 10. a second slide rail; 11. a screw; 12. a clamping plate; 13. a mounting frame; 14. a sleeve; 15. a probe; 16. a push rod; 17. a voltage detector; 18. a spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1-3, a wave soldering weak welding spot detection mechanism 6 includes a bottom plate 1, a transverse moving mechanism 2 is installed on the bottom plate 1, the transverse moving mechanism 2 is composed of a first sliding block 7 and a first sliding rail 8, wherein the first sliding rail 8 is symmetrically fixed on the bottom plate 1, the first sliding block 7 slides in the first sliding rail 8, a longitudinal moving mechanism 3 is fixed on the first sliding block 7, the longitudinal moving mechanism 3 is composed of a second sliding block 9 and a second sliding rail 10, that is, the second sliding rail 10 is fixed on the first sliding block 7, the second sliding block 9 slides in the first sliding rail 8, a placing plate 4 is fixed on the second sliding block 9, and a clamping mechanism 5 is installed on the placing plate 4 for fixing a circuit board.

Through the technical scheme, the clamping mechanism 5 fixes the circuit board, the board 4 can be placed through sliding after fixing, the board 4 is placed to drive the second sliding block 9 at the bottom to slide on the second sliding rail 10, the longitudinal direction movement of the board 4 is achieved, the second sliding rail 10 can be integrally pushed, the second sliding rail 10 can slide on the first sliding rail 8 through the first sliding block 7 at the bottom, and the transverse direction movement of the board 4 is achieved.

Specifically, in this embodiment, the clamping structure includes a screw 11 and an L-shaped clamping plate 12, wherein the bottom of the screw 11 is mounted on the placing plate 4 through a bearing, and the clamping plate 12 is screwed onto the screw 11, when the circuit board is fixed, an operator can place the circuit board between the two placing plates 4, and then limit the angle of the clamping plate 12 and rotate the screw 11, so that the clamping plate 12 on the screw 11 moves downward until the circuit board is fixed, so that the circuit board can be kept in a relatively stable and horizontal state, and the circuit board can be conveniently detected in a later stage, the bottom of the circuit board faces the detecting mechanism 6 when fixed, the top of the circuit board faces the bottom plate 1, and a certain gap is left between the circuit board and the bottom plate 1, so that friction between the circuit board and the bottom plate 1 can be effectively avoided when the position of the circuit board is adjusted, and damage to the circuit board is reduced.

A detection mechanism 6 is further arranged between the two placing plates 4, the detection mechanism 6 is fixed on the bottom plate 1, specifically, the detection mechanism 6 is composed of two sleeves 14 and a mounting frame 13, the mounting frame 13 is fixed on the bottom plate 1, the sleeves 14 are fixed on the mounting frame 13, a probe 15 slides inside each sleeve 14, a push rod 16 is mounted at the top of each probe 15, the push rod 16 is also in sliding connection with the sleeves 14, and a voltage detector 17 is further mounted on the mounting frame 13.

According to the technical scheme, when the detection mechanism 6 detects the circuit board, the position between the circuit board and the probes 15 can be adjusted according to different detection positions, the welding spots to be detected are moved to the bottoms of the two probes 15, then the push rod 16 is pressed, the push rod 16 drives the probes 15 at the bottom to be contacted with the welding spots, a conduction loop is formed between the welding spots and the probes 15, whether the welding spots are false solder is judged through the voltage detector 17 on the loop, the circuit board can be adjusted according to the position between the detection position and the probes 15 after the detection of the welding spots at a certain position is completed, the welding spots to be detected on the circuit board can be moved to the bottoms of the probes 15 through the transverse moving structure and the longitudinal moving mechanism 3, the detection of the welding spots at other positions of the circuit board is realized, the circuit board cannot be contacted with the bottom plate 1 in the process of adjusting the circuit board, and the circuit board in the detection process can be protected as well.

It is further necessary to supplement that a spring 18 is installed between the push rod 16 and the probe 15, and the elasticity of the spring 18 can protect the probe 15 at the bottom, thereby improving the service life thereof.

When the circuit board detection device is used, a circuit board to be detected is clamped on the clamping mechanism 5, the circuit board is adjusted according to the position of a welding spot to be detected, the push rod 16 is pressed after adjustment, the probe 15 is in contact with the welding spot, whether the detection position is a false solder or a false solder is judged according to the voltage detector 17, after detection, the circuit board is continuously adjusted through the longitudinal moving mechanism 3 and the transverse moving mechanism 2, the other welding spot to be detected is aligned with the probe 15, and the other welding spot is continuously detected.

The standard parts used in the application document can be purchased from the market, and can be customized according to the description of the specification and the description of the attached drawings, the specific connection mode of each part adopts conventional means such as mature bolts, rivets, welding and the like in the prior art, and machines, parts and equipment adopt conventional models in the prior art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a wave-soldering solder joint detection mechanism that lacks, includes bottom plate (1), its characterized in that: install lateral shifting mechanism (2) on bottom plate (1), longitudinal shifting mechanism (3) are installed at the top of lateral shifting structure, the bilateral symmetry of longitudinal shifting mechanism (3) is installed and is placed board (4), every place and all install fixture (5) on board (4), two are placed and are equipped with detection mechanism (6) between board (4), detection mechanism (6) are installed on bottom plate (1).

2. The mechanism of claim 1, wherein: the transverse moving mechanism (2) comprises a first sliding rail (8) and a first sliding block (7), the first sliding rail (8) is fixed on the bottom plate (1), the first sliding block (7) is slidably mounted inside the first sliding rail (8), and the longitudinal moving mechanism (3) is mounted on the first sliding block (7).

3. The mechanism of claim 2, wherein: the longitudinal moving mechanism (3) comprises a second sliding block (9) and a second sliding rail (10), the second sliding rail (10) is fixed on the first sliding block (7), the second sliding block (9) is installed inside the second sliding rail (10) in a sliding mode, and the placing plate (4) is fixed on the second sliding block (9).

4. The mechanism of claim 1, wherein: the clamping mechanism (5) comprises a screw rod (11) and a clamping plate (12), the screw rod (11) is rotatably installed on the placing plate (4), and the clamping plate (12) is installed on the screw rod (11) in a threaded mode.

5. The mechanism of claim 1, wherein: detection mechanism (6) include mounting bracket (13), sleeve (14), push rod (16), voltage detector (17) and probe (15), mounting bracket (13) are fixed on bottom plate (1), voltage detector (17) are fixed on mounting bracket (13), sleeve (14) symmetry is installed in mounting bracket (13), every the equal slidable mounting in inside of sleeve (14) has probe (15), push rod (16) are installed at the top of probe (15).

6. The mechanism of claim 5 for detecting the insufficient solder point in wave soldering, wherein: a spring (18) is arranged between the push rod (16) and the probe (15).

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