CN218163099U

CN218163099U - Large-scale visual PCBA maintenance and welding equipment

Info

Publication number: CN218163099U
Application number: CN202221952701.1U
Authority: CN
Inventors: 王祥福; 李家燕
Original assignee: Yunnan Celaifu Technology Co ltd
Current assignee: Yunnan Celaifu Technology Co ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2022-12-27
Anticipated expiration: 2032-07-27

Abstract

The utility model discloses a large-scale visual PCBA maintenance and welding equipment, which comprises a box body, tweezers and a cover body arranged at the upper end of the box body, wherein the cover body is provided with a perspective window; one group of opposite side surfaces in the box body is provided with a heating pipe, and the other group of opposite side surfaces is provided with at least one operation window. This application makes the temperature on the metal mesh in the box even through set up blast wheel and heating pipe in the box, has reduced the possibility that the circuit board warp during maintenance.

Description

Large-scale visual PCBA maintenance and welding equipment

Technical Field

The application relates to the technical field of circuit board welding, in particular to large-scale visual PCBA maintenance and welding equipment.

Background

For the field of circuit board soldering, the package types of components can be classified into direct-insertion components (plug-in) and surface mount components (SMT, also known as chip components), and the chip components include a Ball Grid Array (BGA) chip. In a mass production environment, the inserts are primarily soldered using wave soldering techniques. And the chip components (including BGA) are all welded by adopting a reflow soldering technology. When in maintenance, the plug-in and the chip elements except the BGA are maintained in a mode of a hot air gun and an electric iron, and the BGA chip is maintained by a BGA repair platform.

However, either of the above solutions has some drawbacks and drawbacks. The reflow soldering machine mainly comprises a reflow soldering machine body, a circuit board with the width of 300mm can be contained in the reflow soldering machine body to the maximum extent, a user cannot observe the condition of the soldering process in the soldering process, and all the change conditions of solder paste are searched and tested outside an opaque machine shell when different temperature regions are heated, so that great inconvenience is brought to the work of debugging a temperature curve. Moreover, when the thickness exceeds 300mm, soldering cannot be performed. At present, the main boards adopted in some rack servers are mostly over 500mm in size and width, so that the circuit board cannot be welded by the current domestic technology.

This is then the repair and replacement aspect for large area BGA chips. At present, the mainstream BGA repair table can only clamp a circuit board with the size of 300mm x 300mm at most. And because BGA reprocesses the upper and lower tuyere area of platform limited, this BGA chip size that leads to can maintaining is severely restricted, and domestic BGA reprocesses equipment can only reprocess 50mm x 50mm's chip at utmost at present, if exceed this size, will unable the change, only whole board is scrapped, or polishes the chip off with the polisher, or polishes the circuit board off. This would tend to destroy one. Also for circuit boards with larger areas, due to local heating of the chip area and the large thermal expansion coefficient of the circuit board, this will cause the circuit board to deform severely, which will cause the circuit to bulge severely. Thereby causing the circuit board to be repaired to be directly scrapped. Therefore, the maintenance cost is increased, and the success rate of maintenance is reduced. And even if the infrared preheating bricks are additionally arranged on the periphery of the conventional BGA repair platform to make up for the defect, the temperature of the infrared preheating bricks is only about 100 ℃, the central temperature of the air nozzle is up to 240 ℃, and the 140-DEG C temperature difference is applied to a circuit board with the thickness of only 1.6mm, so that serious temperature difference deformation is generated, and the problems of unsoldering, deformation and the like are caused.

Disclosure of Invention

To prior art's problem, this application provides a large-scale visual PCBA maintenance and welding equipment, has can weld great circuit board, can be to the constant temperature even heating of whole board, simultaneously in the maintenance field, can change super large area's BGA chip, when changing the chip, can accomplish the even heating to whole circuit board to can not produce the beneficial effect of difference in temperature deformation.

The application provides a large-scale visual PCBA maintenance and welding equipment adopts following technical scheme:

a large visual PCBA maintenance and welding device comprises a box body, tweezers and a cover body arranged at the upper end of the box body, wherein a perspective window is arranged on the cover body, a blast wheel is arranged at the inner lower part of the box body, and a metal separation net is arranged at the upper part of the blast wheel in the box body; one group of opposite side surfaces in the box body is provided with a heating pipe, and the other group of opposite side surfaces is provided with at least one operation window.

Preferably, a temperature sensor is arranged on the metal separation net.

Preferably, the box body comprises an inner metal protective shell, an outer metal protective shell and an aluminum silicate heat insulation pad arranged between the two protective shells.

Preferably, an electronic controller is arranged on the outer wall of the box body and connected with the temperature sensor, the blast wheel and the heating pipe.

Preferably, the number of the blowing wheels is two.

Preferably, the perspective window is a plurality of layers of high-temperature resistant cesium potassium fireproof glass with the thickness of 12 mm.

Preferably, the forceps comprise an operating handle, a forceps heat insulation pad, an extension rod and a clamping head.

Preferably, the length and width of the metal separation net is 60 x 50cm.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the temperature on the metal net in the box body is uniform by arranging the blast wheel and the heating pipe in the box body, so that the possibility of deformation of the circuit board during maintenance is reduced;

2. the aluminum silicate heat insulation pad can prevent the heat conduction from scalding operators while preserving heat.

Drawings

FIG. 1 is a schematic structural view of a box body of the present invention;

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

fig. 3 is a schematic structural view of the tweezers of the present invention;

fig. 4 is a schematic structural view of the middle box body and the blower wheel of the present invention.

Description of the reference numerals: 1. a box body; 2. a pair of tweezers; 3. a cover body; 4. a perspective window; 5. a blower wheel; 6. a metal screen; 7. heating a tube; 8. an operating window; 9. a temperature sensor; 10. an inner metal protective shell; 11. an outer metal protective shell; 12. an aluminum silicate heat insulation pad; 13. an electronic controller; 14. an operating handle; 15. an extension pole; 16. a gripping head; 17. a tweezer heat insulation pad; 18. a support; 19. high temperature resistant motor.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

In the embodiment, referring to fig. 1-4, the large visual PCBA maintenance and welding equipment comprises a box body 1, tweezers 2 and a cover body 3 arranged at the upper end of the box body 1, wherein a perspective window 4 is arranged on the cover body 3, a blast wheel 5 is arranged at the inner lower part of the box body 1, the blast wheel 5 is arranged on a bracket 18 at the inner bottom of the box body 1, a high-temperature resistant motor 19 for driving the blast wheel 5 to rotate is arranged on the bracket 18, and a metal screen 6 is arranged at the upper part of the blast wheel 5 in the box body 1; one group of opposite side surfaces in the box body 1 are provided with heating pipes 7, and the other group of opposite side surfaces are provided with at least one operation window 8. By arranging the blowing wheel 5 and the heating pipe 7 in the box body 1, the temperature in the box body 1 is uniform under the action of the blowing wheel 5, and the possibility of deformation of the circuit board during maintenance is reduced.

In one embodiment, referring to fig. 1, the metal screen 6 is provided with a temperature sensor 9. The temperature sensor 9 facilitates accurate monitoring of the temperature on the metal screen 6.

In one embodiment, referring to fig. 1, the container 1 comprises an inner protective metal shell 10, an outer protective metal shell 11, and an aluminum silicate heat insulating mat 12 disposed between the two protective shells. The aluminum silicate heat insulation pad 12 can prevent heat conduction from scalding operators while preserving heat.

In one embodiment, referring to fig. 1, an electronic controller 13 is disposed on the outer wall of the box body 1, and the electronic controller 13 is connected to the temperature sensor 9, the blower wheel 5 and the heating pipe 7. The electronic controller 13 receives the signal from the temperature sensor 9 to control the operation of the blowing wheel 5 and the heating pipe 7, so as to ensure that the temperature on the metal screen 6 is the required operating temperature.

In one embodiment, referring to fig. 4, the number of the blowing wheels 5 is two.

In one embodiment, referring to fig. 2, the transparent window 4 is a multi-layer 12mm thick refractory cesium potassium fire-resistant glass. The high-temperature resistant cesium-potassium fireproof glass has high transparency and can simultaneously realize good heat insulation effect

In one embodiment, the forceps 2 described with reference to fig. 3 include an operating handle 14, a forceps thermal pad 17, an extension rod 15, and a grasping head 16.

In one embodiment, referring to fig. 1, the length and width of the metal separation net 6 is 60 × 50cm. Can place great circuit board, when the circuit board is great relatively, can incline to place on the metal separation net 6 in box 1, also can the even heating, overhaul.

The embodiments of the present invention are all preferred embodiments of the present invention, and the scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. A large visual PCBA maintenance and welding device comprises a box body (1), tweezers (2) and a cover body (3) arranged at the upper end of the box body (1), wherein a perspective window (4) is arranged on the cover body (3), and the PCBA maintenance and welding device is characterized in that a blast wheel (5) is arranged at the inner lower part of the box body (1), and a metal separation net (6) is arranged at the upper part of the blast wheel (5) in the box body (1); one group of opposite side surfaces in the box body (1) are provided with heating pipes (7), and the other group of opposite side surfaces are at least provided with an operating window (8).

2. A large visual PCBA repair and welding apparatus according to claim 1, wherein: and a temperature sensor (9) is arranged on the metal separation net (6).

3. A large visual PCBA repair and welding apparatus according to claim 1, wherein: the box body (1) comprises an inner metal protective shell (10), an outer metal protective shell (11) and an aluminum silicate heat insulation pad (12) arranged between the protective shells on the two sides.

4. The PCBA maintenance and welding equipment of the large-scale visualization of claim 2, wherein: the outer wall of the box body (1) is provided with an electronic controller (13), and the electronic controller (13) is connected with a temperature sensor (9), a blast wheel (5) and a heating pipe (7).

5. The PCBA maintenance and welding equipment of the large-scale visualization of claim 1, wherein: the number of the blast wheels (5) is two.

6. The PCBA maintenance and welding equipment of the large-scale visualization of claim 1, wherein: the perspective window (4) is a plurality of layers of high-temperature-resistant cesium-potassium fireproof glass with the thickness of 12 mm.

7. The PCBA maintenance and welding equipment of the large-scale visualization of claim 1, wherein: the forceps (2) comprise an operating handle (14), a forceps heat insulation pad (17), an extension rod (15) and a clamping head (16).

8. The PCBA maintenance and welding equipment of the large-scale visualization of claim 1, wherein: the length and the width of the metal separation net (6) are 60 × 50cm.