CN115971605A - Precise welding workbench and use method thereof - Google Patents
Precise welding workbench and use method thereof Download PDFInfo
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- CN115971605A CN115971605A CN202211713292.4A CN202211713292A CN115971605A CN 115971605 A CN115971605 A CN 115971605A CN 202211713292 A CN202211713292 A CN 202211713292A CN 115971605 A CN115971605 A CN 115971605A
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention discloses a precision welding workbench and a using method thereof. And the circuit board placing table is used for placing the circuit board to be welded. And the air port module is provided with a hot air port in the middle, and an annular cold air port is arranged outside the hot air port in a surrounding mode and used for accurately controlling the hot air to blow to a welding position on the circuit board to be welded. And the laser calibration module emits laser and is used for assisting the tin liquid generating device, the welding position and the hot air port in accurate positioning. And the tracking module moves relative to the circuit board placing table, is arranged above the laser calibration module and is used for tracking the moving position of the circuit board to be welded in real time. The precision welding workbench disclosed by the invention is simple to use, not only simplifies the operation process of precision welding, but also reduces the loss of electronic elements in a circuit board.
Description
Technical Field
The invention relates to the field of welding of electronic components, in particular to a welding method of a tiny electronic component.
Background
When the circuit board is used for a long time or damaged by external force, the circuit board is easy to break, desolder or damage electronic components. When the above problems occur, it is common to replace the electronic components. However, with the development of integrated circuits, the circuit boards are gradually miniaturized and the components are densely packed, so that the difficulty of maintaining the circuit boards is increased. The circuit board electronic component density is high, and the pad interval is little, and traditional hot-blast gun or warm table, heating area are too big, cause the heating region too big easily, treat that the electronic component soldering tin near the change electronic component melts, lead to the circumstances such as normal electronic component rosin joint, desoldering, short circuit.
Patent CN2022114457572 discloses a FPC board laser welding equipment, including the chassis, the top of chassis is provided with feeding mechanism, arm, cooling mechanism and temperature measurement mechanism simultaneously, the one end of arm is connected with the laser welding rifle, feeding mechanism and cooling mechanism are located the both sides in opposite directions of arm, temperature measurement mechanism is located one side of feeding mechanism, temperature measurement mechanism includes the loop bar, the bottom welding of loop bar has the slider, one side inner wall of chassis is provided with the second spout, and the slider activity joint is at the inner wall of second spout, the loop bar includes outer tube and inner loop bar, and one side outer wall of inner loop bar is provided with the handle, the top outer wall of inner loop bar is provided with the treater, and the one end of treater is connected with the camera, the opposite side of treater is provided with the laser thermoscope. However, in the circuit board structure with an oversized size, if the atomized water generated by the temperature reduction mechanism is not treated in time, the use of the whole circuit board is influenced.
In summary, the main disadvantages of the prior art are as follows:
(1) An efficient and accurate vision system is not provided, and the accuracy of welding tiny components cannot be guaranteed;
(2) In the welding process, the local heating of the circuit board is uneven, so that the circuit board is deformed and electronic elements are lost;
(3) After welding, the circuit board is cooled by using a condenser, a water tank and other modes, and condensate water or atomized water generated in the cooling process is not properly treated, so that the normal use of the circuit board is influenced.
Disclosure of Invention
The invention provides a precise welding workbench and a using method thereof, which can solve at least one of the technical problems.
In order to achieve the purpose, the invention provides the following technical scheme:
a precision welding station, comprising:
the circuit board placing table is used for placing a circuit board to be welded and positioning the circuit board to be welded to an operation position;
the hot air port module is provided with a hot air port in the middle, an annular cold air port is arranged outside the hot air port in a surrounding mode, annular air blown out from the cold air port forms an annular air curtain, surrounds hot air blown out from the hot air port and is used for accurately controlling the hot air to blow to a welding position on a circuit board to be welded;
the laser calibration module emits laser, is opposite to the hot air port of the air port module and is used for assisting in accurately positioning the molten tin generating device, the welding position or the hot air port;
and the tracking module moves relative to the circuit board placing table and is arranged above the circuit board placing table.
Further, the tracking module has 180-degree views of the left, the right, the upper and the lower, and is used for tracking the position of the circuit board to be welded in real time.
Furthermore, the tracking module comprises a camera, the camera has an automatic focusing function, a focal length is placed on the welding position, after the circuit board to be welded moves, automatic focusing is achieved on the welding position, and the welding position is accurately positioned.
Furthermore, a type selection part is arranged in the air port module, and the type selection part is provided with a cold air part, a hot air part and a cold and hot air part;
the cold air part is used for independently opening or closing cold air, and the cold air is used for cooling in a welding way; the hot air part independently opens or closes hot air which is used for preheating the circuit board to be welded; and the cold and hot air part is used for simultaneously opening or closing cold air and hot air and locking the hot air at the welding position of the circuit board to be welded.
Further, the wind gap module still is provided with angle modulation function, angle modulation function is used for changing the degree of dispersing of cold wind air curtain to the temperature requirement before the cooperation welding.
Further, the precision welding bench further comprises:
the heat insulation module moves relative to the circuit board placing table and is arranged between the circuit board placing table and the hot air port; after the welding, the heat insulating module is used for isolating the heat that the hot-blast mouth gived off, supplementary wait to weld the circuit board cooling.
Further, the precision welding bench further comprises:
and the thermal imaging device is arranged above the operating position of the circuit board placing table and is used for measuring and displaying the temperature of the circuit board to be welded in the welding process.
The invention also provides a use method of the precision welding workbench, which comprises the following steps:
placing a circuit board to be welded on a circuit board placing table, and ensuring that the welding position moves to the center of a hot air port by using a tracking module;
preheating the operation position of the circuit board with the welding function by using an air port module, and measuring the temperature change of the operation position by using a thermal imaging device;
the laser calibration module is used for calibrating the position of the molten tin generating device, the welding position and the center of the hot air port to form the calibration requirement of three points and one line of the molten tin generating device, the welding position and the center of the hot air port, so that the point-to-point control precise welding is realized;
when the temperature of the position to be welded meets the welding requirement, a tin liquid generating device is used for providing tin liquid at the welding position;
after the welding is finished, the hot air part is closed, the divergence degree of the cold air curtain is increased, and the temperature of the circuit board to be welded is reduced;
and moving the heat insulation module to a position between the hot air port and the circuit board to be welded to assist in cooling the circuit board to be welded.
Further, the tracking module is used for ensuring that the welding position moves to the center of the hot air port, and comprises: before moving, using a camera to carry out focusing setting on the welding position; after moving, the welding position is locked through automatic focusing, and the welding position is moved to the center of the hot air port.
Further, the preheating the operation position of the soldered circuit board using the tuyere module includes: before welding, the angle adjusting function of the air port module is used, so that the divergence degree of the cold air curtain is small, hot air is concentrated, and the welding position is preheated.
The invention has the following beneficial effects:
(1) The laser calibration module of the precision welding workbench calibrates three points and one line of laser to the tin liquid generator, the welding position and the hot air port center, so that point-to-point precision welding is realized, and the use of the precision welding workbench is simplified;
(2) The tracking module of the precise welding workbench has automatic focusing capacity, tracks the welding position in real time, achieves the effect of clear positioning without manually adjusting the direction and the visual field, provides a high-efficiency and precise visual system for welding tiny components, and ensures the welding accuracy;
(3) The circuit board placing table of the precision welding workbench is matched with the air port module, the circuit board to be welded can be preheated before welding, and loss of electronic elements in the welding process is reduced.
Drawings
FIG. 1 is a schematic view of a precision welding station of the present invention;
FIG. 2 is a schematic view of a tuyere module of the precision welding bench of the present invention;
FIG. 3 is a cross-sectional view of a tuyere module of the precision welding bench of the present invention;
FIG. 4 is a top view of the tuyere module of the precision welding bench of the present invention;
FIG. 5 is a schematic view of a tracking module of the precision welding station of the present invention;
FIG. 6 is a schematic view of a laser calibration module of the precision welding station of the present invention;
FIG. 7 is a schematic view of the thermal insulation module of the precision welding station of the present invention.
In the figure:
1-tuyere module; 101-a cold air port; 102-hot air ports; 103-a heating module; 2-a tracking module; 201-a scaffold; 202-a camera; 3-a laser emitter; 4-a molten tin generating device; 5-heat insulation module; 501-heat insulation material; 502-column; 6-circuit board placing table; 7-a circular table; 701-a ball screw motor; 702-stage.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
The invention provides a precise welding workbench which comprises a circuit board placing table 6, an air port module 1, a laser calibration module and a tracking module 2. As shown in fig. 1, a board placing table 6 for placing a board to be soldered and positioning the board to be soldered to an operating position. The air port module 1 is provided with a hot air port 102 in the middle, an annular cold air port 101 is arranged outside the hot air port 102 in a surrounding mode, annular air blown out of the cold air port 101 forms an annular air curtain to surround hot air blown out of the hot air port 102, and the annular air curtain is used for accurately controlling the hot air to be blown to a welding position on a circuit board to be welded. And the laser calibration module emits laser and is used for assisting in accurately positioning the molten tin generating device 4, the welding position and the hot air port 102. The tracking module 2 moves relative to the circuit board placing table 6 and is arranged above the laser calibration module; the tracking module 2 has 180-degree views of the left, right, upper and lower sides respectively, and is used for tracking the position of a circuit board to be welded in real time.
As shown in fig. 1, each component of the precision welding workbench is arranged on a circular workbench 7, wherein the tuyere module 1, the laser calibration module, the heat insulation module 5 and the tuyere module 1 are arranged on an object stage 702.
As shown in fig. 2-4, a hot air port 102 is arranged in the middle of the air port module 1, an annular cold air port 101 is surrounded outside the hot air port 102, and annular air blown out from the cold air port 101 forms an annular air curtain surrounding hot air blown out from the hot air port 102, so as to accurately control the hot air to blow to a designated area on the circuit board. The tuyere module 1 is provided with a type selection part, and the type selection part is provided with a cold air part, a hot air part and a cold and hot air part. The cold air part is used for independently opening or closing cold air, and the cold air is used for cooling in a welding way; the hot air part independently opens or closes hot air which is used for preheating the circuit board; the cold and hot air part is used for locking the hot air at the welding position of the circuit board and reducing the loss of other electronic elements. The tuyere module 1 is also provided with an angle adjusting function for changing the divergence degree of a cold air curtain to match the welding process; the concrete expression is as follows: before welding, the divergence degree of the cold air curtain is small, hot air is concentrated, and the welding position is accurately heated; after welding, the cold air curtain has large divergence degree, disperses the heat of hot air and is used for large-area heat dissipation. The air port module 1 is arranged on an object stage 702 of the circular workbench 7, and a heating module 103 is arranged inside the object stage 702 and used for providing hot air. In this embodiment, a cross-shaped heating device surrounded by heating wires is embedded in the stage 702 as the heating module 103 for providing hot air.
As shown in fig. 5, the tracking module 2, which is independently disposed on the circular table 7, has a visual field including the circuit board placement stage 6; the tracking module 2 comprises a support 201, and the support 201 can move relative to the circuit board placing table 6; the tracking module 2 has 180-degree visual fields of left, right, up and down, and is used for tracking the moving process of the circuit board to be welded in real time and accurately positioning the circuit board to be welded. The tracking module 2 comprises a camera 202, the camera 202 has an automatic focusing function, a focal distance is placed on the welding position, after the circuit board to be welded moves, automatic focusing is achieved on the welding position, and the welding position is accurately located. The tracking module 2 is externally connected with a display, and the display is matched with the camera 202 to perform characteristic recognition before and after moving on the welding position, so that automatic focusing is realized on the welding position, and the welding position is accurately positioned.
As shown in fig. 6, the laser calibration module emits laser light to assist the molten tin generating device 4, the welding position, and the hot air port 102 in accurate positioning, so as to form three points and one line at the center of the molten tin generating device 4, the welding position, and the hot air port 102, thereby realizing point-to-point control precise welding. The laser calibration module is arranged on one side of the objective table 702, is provided with a laser emitter 3, emits laser, and performs three-point one-line positioning on the molten tin generating device 4, the welding position and the center of the hot air port 102; tin liquid generating device 4 sets up in laser emitter 3 below, can adjust tin liquid generating device 4's use height according to the height of welding position, is convenient for carry out point-to-point precision welding.
And the circuit board placing table 6 is used for placing the circuit board to be welded and positioning the circuit board to be welded to an operation position. The circuit board placing table 6 is independently arranged on the circular workbench 7, positions the operation position of the circuit board to be welded, and can move the circuit board to be welded to the center of the hot air port 102. And a thermal imaging device is arranged in the circuit board placing table 6, and the temperature sensing device is used for measuring and displaying the temperature of the circuit board in the welding process.
As shown in fig. 7, the heat insulator module 5 includes a column 502 and a heat insulator 501, and the column 502 is disposed at a corner of the stage 702 so as to be movable relative to the board placement stage 6. The heat insulation material 501 is arranged at the upper end of the heat insulation module 5, and the heat insulation material 501 can be placed between the circuit board placing table 6 and the hot air port 102; after welding, the heat insulating material 501 is used for isolating heat emitted by the hot air port 102 to assist in cooling the circuit board.
As shown in fig. 1, the above components are all placed on a rotatable circular table 7, and two ball screw motors 701 which are vertically crossed are also placed on the circular table 7 to realize movement in the XY axis direction; still be provided with objective table 702 on the ball screw motor 701 that is located the top, including wind gap module 1 in the objective table 702, the inside cross heating device that has the heater to enclose of inlaying of wind gap module 1 for provide the hot blow.
The invention also provides a using method of the precision welding workbench, which comprises the following steps:
the circuit board to be soldered is placed on the circuit board placement table 6, and the movement of the soldering position to the center of the hot air port 102 is ensured by the trace module 2. Specifically, before the circuit board to be welded moves, the camera 202 is used for focusing and setting the welding position; after moving, the welding position is locked by automatic focusing, and the welding position is moved to the center of the hot air port 102.
Preheating the operation position of the circuit board to be welded by using the air port module 1, namely before welding, using the angle adjusting function of the air port module 1 to ensure that the divergence degree of a cold air curtain is small, hot air is concentrated, and the welding position is accurately preheated; simultaneously, a temperature change of the operation position is measured by a thermal imaging device.
The laser calibration module is used for calibrating the position of the molten tin generating device 4, the welding position and the center of the hot air port 102, so that the calibration requirements of three points and one line of the molten tin generating device 4, the welding position and the center of the hot air port 102 are met, and the point-to-point control precision welding is realized.
And when the temperature of the position to be welded meets the welding requirement, providing molten tin at the welding position by using a molten tin generating device 4.
After the welding is finished, the hot air part is closed, the divergence degree of the cold air curtain is increased, and the temperature of the circuit board to be welded is reduced; meanwhile, the heat insulation module 5 is moved to a position between the hot air port 102 and the circuit board to be welded to assist in cooling the circuit board to be welded.
The invention has the following beneficial effects:
(1) The precision welding workbench is provided with a laser calibration module, and three-point one-line laser calibration is carried out on a tin liquid generator, a welding position and the center of the hot air port 102, so that point-to-point precision welding is realized, and the use of the precision welding workbench is simplified;
(2) The tracking module 2 of the precise welding workbench has automatic focusing capacity, tracks the welding position in real time, achieves the effect of clear positioning without manually adjusting the direction and the visual field, provides a high-efficiency and precise visual system for welding tiny components, and ensures the welding accuracy;
(3) The circuit board placing table 6 of the precision welding workbench is matched with the air port module 1, a circuit board to be welded can be preheated before welding, and loss of electronic elements in the welding process is reduced.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A precision welding table, comprising:
the circuit board placing table is used for placing a circuit board to be welded and positioning the circuit board to be welded to an operation position;
the air port module is provided with a hot air port in the middle, an annular cold air port is arranged outside the hot air port in a surrounding mode, annular air blown out of the cold air port forms an annular air curtain which surrounds hot air blown out of the hot air port and is used for accurately controlling the welding position of the hot air blown onto the circuit board to be welded;
the laser calibration module emits laser, is opposite to the hot air port of the air port module and is used for assisting in accurately positioning the molten tin generating device, the welding position or the hot air port;
and the tracking module moves relative to the circuit board placing table and is arranged above the circuit board placing table.
2. The precision welding table of claim 1, wherein the tracking module has 180 ° views of left, right, up, and down, respectively, for real-time tracking of the position of the circuit board to be welded.
3. The precision welding table of claim 1, wherein the tracking module comprises a camera having an auto-focus function, wherein the camera places a focal distance at the welding position, and after the circuit board to be welded moves, the camera automatically focuses on the welding position to precisely position the welding position.
4. The precision welding workbench according to claim 1, wherein a type selection part is provided in said tuyere module, said type selection part being provided with a cold air part, a hot air part, a cold and hot air part;
the cold air part is used for independently opening or closing cold air, and the cold air is used for cooling in a welding way; the hot air part independently opens or closes hot air which is used for preheating the circuit board to be welded; and the cold and hot air part is used for simultaneously opening or closing cold air and hot air and locking the hot air at the welding position of the circuit board to be welded.
5. The precision welding bench of claim 1, wherein the tuyere module is further provided with an angle adjustment function for changing the divergence degree of the cold air curtain to match the temperature requirements before and after welding.
6. The precision welding table of claim 1, further comprising:
the heat insulation module moves relative to the circuit board placing table and is arranged between the circuit board placing table and the hot air port; after welding, the heat insulation module is used for insulating the heat emitted by the hot air port and assisting the cooling of the circuit board to be welded.
7. The precision welding table of claim 1, further comprising:
and the thermal imaging device is arranged above the operating position of the circuit board placing table and used for measuring and displaying the temperature of the circuit board to be welded in the welding process.
8. A method of using a precision welding table, comprising:
placing a circuit board to be welded on a circuit board placing table, and ensuring that the welding position moves to the center of a hot air port by using a tracking module;
preheating the operation position of the circuit board with the welding function by using an air port module, and measuring the temperature change of the operation position by using a thermal imaging device;
the laser calibration module is used for calibrating the position of the molten tin generating device, the welding position and the center of the hot air port to form the calibration requirement of three points and one line of the molten tin generating device, the welding position and the center of the hot air port, so that the point-to-point control precise welding is realized;
when the temperature of the position to be welded meets the welding requirement, a tin liquid generating device is used for providing tin liquid at the welding position;
after the welding is finished, the hot air part is closed, the divergence degree of the cold air curtain is increased, and the temperature of the circuit board to be welded is reduced;
and moving the heat insulation module to a position between the hot air port and the circuit board to be welded to assist in cooling the circuit board to be welded.
9. The method of using a precision welding bench of claim 8 wherein said using a tracking module to ensure that the welding position moves to the hot blast hole center comprises: before moving, a camera is used for carrying out focusing setting on the welding position; after moving, the welding position is locked through automatic focusing, and the welding position is moved to the center of the hot air port.
10. The method of using a precision welding bench of claim 8, wherein said preheating the operating position of said strip solder circuit board using a tuyere module comprises: before welding, the angle adjusting function of the air port module is used, so that the divergence degree of the cold air curtain is small, hot air is concentrated, and the welding position is preheated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211713292.4A CN115971605A (en) | 2022-12-30 | 2022-12-30 | Precise welding workbench and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211713292.4A CN115971605A (en) | 2022-12-30 | 2022-12-30 | Precise welding workbench and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115971605A true CN115971605A (en) | 2023-04-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211713292.4A Pending CN115971605A (en) | 2022-12-30 | 2022-12-30 | Precise welding workbench and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115971605A (en) |
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2022
- 2022-12-30 CN CN202211713292.4A patent/CN115971605A/en active Pending
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