CN110125501B - Welding method of spot welding machine - Google Patents
Welding method of spot welding machine Download PDFInfo
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- CN110125501B CN110125501B CN201910384161.8A CN201910384161A CN110125501B CN 110125501 B CN110125501 B CN 110125501B CN 201910384161 A CN201910384161 A CN 201910384161A CN 110125501 B CN110125501 B CN 110125501B
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- Prior art keywords
- soldering
- wire feeder
- tin wire
- welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/02—Soldering irons; Bits
- B23K3/025—Bits or tips
- B23K3/026—Removable soldering bits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/06—Solder feeding devices; Solder melting pans
- B23K3/0607—Solder feeding devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
- B23K2101/42—Printed circuits
Abstract
The application discloses a welding method of a spot welding machine, which comprises the following steps: moving a soldering iron head to a welding spot to be welded and preheating a welding disc and a device pin of the welding spot; controlling a tin wire feeder to convey a tin wire to the soldering iron head and melt the tin wire, and then forming a thermal bridge among the soldering iron head, the bonding pad and the device pin and continuously melting the tin wire; in the process that the tin wire is continuously melted, the tin wire feeder is adopted to continuously feed the tin wire, and meanwhile, the soldering iron head or the tin wire feeder relatively moves around the circumferential direction of the welding spot; the relative movement of the tip or the wire feeder gradually moves the wire out of contact with the tip and away from the tip while maintaining contact with the pad and/or the device pin. The welding method of the spot welding machine provided by the embodiment of the application can effectively improve the welding quality.
Description
Technical Field
The application relates to the technical field of circuit board welding, in particular to a welding method of a spot welding machine.
Background
With the development of society, circuit boards have been commonly used in various devices. The circuit board is internally integrated with a circuit structure, and various electric elements are arranged on the circuit board, penetrate through the metal through holes of the circuit board through structures such as pins and are welded with the welding pads on the circuit board through soldering tin, so that fixation and circuit access are realized.
Due to the limitation of some devices or production processes in the welding process, the welding of some circuit boards or parts of devices is generally completed manually, especially, part of welding requirements occur in the subsequent processes of production and assembly, but with the management and control of labor cost and the higher and higher requirements on production efficiency, spot welding machines (also called welding robots) begin to appear in the market. The spot welding machine can drive the soldering iron head and the tin wire feeder to move to a welding spot position needing welding and perform heating welding on the soldering pan, the device pin and the continuously melted tin wire.
However, in the related art, the moving mode of the soldering bit and the tin wire feeder is too simple, the soldering bit and the tin wire feeder basically keep a fixed state in the heating and welding process, and the manual welding process cannot be simulated accurately.
Therefore, a new welding method for a spot welding machine is needed.
Disclosure of Invention
The embodiment of the application provides a welding method of a spot welding machine, so as to solve the problems.
The embodiment of the application adopts the following technical scheme:
the embodiment of the application provides a welding method of a spot welding machine, which comprises the following steps:
moving a soldering iron head to a welding spot to be welded and preheating a welding disc and a device pin of the welding spot;
controlling a tin wire feeder to convey a tin wire to the soldering iron head and melt the tin wire, and then forming a thermal bridge among the soldering iron head, the bonding pad and the device pin and continuously melting the tin wire;
in the process that the tin wire is continuously melted, the tin wire feeder is adopted to continuously feed the tin wire, and meanwhile, the soldering bit or the tin wire feeder is enabled to relatively move around the circumferential direction of the welding point;
the relative movement of the tip or the wire feeder gradually moves the wire out of contact with the tip and away from the tip while maintaining contact with the pad and/or the device pin.
Optionally, in the soldering method of a spot welder, in the step of relatively moving the soldering tip or the tin wire feeder circumferentially around the solder joint:
the circumferential relative movement of the soldering iron head or the tin wire feeder comprises one or more sections of linear motion.
Optionally, in the soldering method of a spot welder, in the step of relatively moving the soldering tip or the tin wire feeder circumferentially around the solder joint:
and establishing an XY rectangular coordinate system with the welding point as an origin in a plane parallel to the circumferential direction, wherein each section of linear motion of the soldering iron head or the tin wire feeder is at least one of independently moving along an X axis, independently moving along a Y axis and simultaneously moving along the X axis and the Y axis.
Optionally, in the soldering method of a spot welder, in the step of relatively moving the soldering tip or the tin wire feeder circumferentially around the solder joint:
the circumferential relative movement of the soldering iron head and the tin wire feeder comprises one or more sections of curvilinear motion.
Optionally, in the soldering method of a spot welder, in the step of relatively moving the soldering tip or the tin wire feeder circumferentially around the solder joint:
and establishing an XY rectangular coordinate system with the welding spot as an origin in a plane parallel to the circumferential direction, wherein each section of curvilinear motion of the soldering iron head or the tin wire feeder moves along an X axis and a Y axis simultaneously.
Optionally, in the soldering method of a spot welder, in the step of relatively moving the soldering tip or the tin wire feeder circumferentially around the solder joint:
and establishing an XY rectangular coordinate system taking the welding point as an origin point and an R-axis rotating coordinate system taking the welding point as a rotating center in a plane parallel to the circumferential direction, wherein each section of curvilinear motion of the soldering iron head or the tin wire feeder is at least one of independently rotating around the R axis, simultaneously moving along the X axis and rotating around the R axis, simultaneously moving along the Y axis and rotating around the R axis, and simultaneously moving around the XY axis and rotating around the R axis.
Optionally, in the soldering method of a spot welder, in the step of relatively moving the soldering tip or the tin wire feeder circumferentially around the solder joint:
the tin wire feeder moves, and the soldering iron head is static.
Optionally, in the soldering method of a spot welder, in the step of relatively moving the soldering tip or the tin wire feeder circumferentially around the solder joint:
the soldering iron head moves, and the tin wire feeder is static.
Optionally, in the welding method of the spot welder, the spot welder is a single-arm spot welder.
Optionally, in the welding method of the spot welder, the spot welder is a double-arm spot welder.
The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:
according to the welding method of the spot welding machine disclosed by the embodiment of the application, the soldering bit or the tin wire feeder moves around the soldering point in the circumferential direction relatively after the tin wire is heated and melted, and the tin wire is gradually far away from the soldering bit in the welding process, so that the melted tin wire can be effectively prevented from being accumulated near the soldering bit and can be permeated into the soldering point, and the welding quality is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic view of a control structure of a single-arm spot welder for controlling a tin wire feeder by a linkage system according to an embodiment of the present application;
FIG. 2 is a schematic view of a control structure of a single-arm spot welder of a linkage system control soldering bit disclosed in an embodiment of the present application;
FIG. 3 is a schematic view of a control structure of a dual-arm spot welder for controlling a tin wire feeder by a linkage system according to an embodiment of the present application;
fig. 4 is a schematic view of a control structure of a dual-arm spot welder of a linkage system control soldering iron head disclosed in an embodiment of the present application.
Description of reference numerals:
1-linkage system, 2-tin wire feeder and 3-soldering iron.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
The embodiment of the application discloses a welding method of a spot welding machine, which comprises the following steps:
s10, moving the soldering iron head to the welding point to be welded and preheating the welding pad and the device pin of the welding point;
s20, controlling the tin wire feeder to feed the tin wires to the soldering iron head and melt the tin wires to form a thermal bridge among the soldering iron head, the bonding pad and the device pin and continuously melt the tin wires;
s30, in the process that the tin wire is continuously melted, the tin wire feeder is adopted to continuously feed the tin wire, and simultaneously the soldering iron head or the tin wire feeder is enabled to relatively move around the soldering point in the circumferential direction;
in S30, the relative movement of the tip or wire feeder is such that the wire is gradually moved out of contact with the tip and away from the tip while maintaining contact with the pad and/or device lead.
Wherein S10 is used to preheat the pad of the pad to be soldered and the device pin on the circuit board in preparation for soldering. S20 can perform a pre-tinning action, wherein a portion of the tin wire in direct contact with the soldering tip is melted and forms a thermal bridge, and heat from the soldering tip is transferred through the thermal bridge to the pad, the device pin, and the metal via connected through the thermal bridge of the pad and the device pin, thereby increasing the temperature of the solder tip, the device pin, and the pad.
Following S30 is crucial, after the solder pad, the device pin, the metal via hole, and the like are heated to a sufficient temperature, the spot welding in the related art may continue to perform the tin feeding operation, and the tin wire is continuously conveyed to the soldering iron by the tin wire feeder and melted, because the temperature of the soldering iron is always higher than the temperatures of the solder pad, the device pin, and the metal via hole, and the temperature gradient difference is the highest temperature of the soldering iron, the melted tin wire easily climbs upwards along the soldering iron under the pushing action of the soldering iron and the subsequent tin wire, and does not penetrate into the metal via hole through the gap between the pin and the solder joint, which may cause soldering defects.
In this embodiment, the relative position of the wire feeder and the soldering iron tip is not maintained during the continuous feeding of the solder wire, but the relative position of the wire feeder and the soldering iron tip is changed by the relative movement of the wire feeder or the soldering iron tip with respect to the solder joint, and during this process, the whole of the wire feeder is gradually away from the soldering iron tip, the solder wire is gradually separated from the soldering iron tip along with the wire feeder, and the solder wire is continuously formed into a thermal bridge by simultaneously maintaining the contact between the solder wire and the pad and/or the device pin during the separation of the solder wire from the soldering iron tip and during the soldering process after the separation of the solder wire from the soldering iron tip, so as to ensure that the solder wire can be continuously heated and melted. Because the solder wire adjacent the tip has been heated to melt and has a viscosity, the molten solder wire can move with the tip or the wire feeder about the solder joint during relative movement of the tip or the wire feeder with respect to the solder joint, thereby allowing the solder wire to contact more of the area of the solder joint. More importantly, the solder wire's transport point still can keep away from the soldering bit gradually at this in-process, and consequently subsequent tin wire also can be more and more far away from the soldering bit, and the heat bridge also can be longer and more long to effectively avoid the tin wire to take place to pile up near the soldering bit, and remove the in-process because the tin wire remains the contact with pad or device pin all the time, consequently molten tin wire can be attached to on pad and device pin all the time, and then improved welding quality.
It should be noted that the phrase "relative movement of the soldering tip or the solder wire feeder in the circumferential direction around the solder joint" in S30 in this embodiment does not necessarily mean that the soldering tip or the solder wire feeder must move exactly around the solder joint in a circular path, but only in a direction substantially along the circular path. For example, the relative circumferential movement of the tip or wire feeder may comprise one or more linear movements by which the relative circumferential movement path of the tip or wire feeder approaches the true circular path. Alternatively, the relative circumferential movement of the soldering tip or the wire feeder may comprise one or more curved movements, by which the relative circumferential movement path of the soldering tip and the wire feeder approaches the true circular path. Of course, it is contemplated that the relative circumferential movement of the soldering tip or wire feeder may also include one or more linear movements and one or more curvilinear movements to achieve a movement path that approximates the true circular shape.
Moreover, the central angle corresponding to the moving track does not need to be a complete 360 °, for example, 90 °, 135 °, 180 °, 270 °, and the like, which is not limited in this embodiment. The specific moving track can be adjusted according to the actual welding requirement.
In order to facilitate the realization of the relative circumferential movement of the soldering iron tip or the tin wire feeder, an XY rectangular coordinate system with a welding spot as an origin can be established in a plane parallel to the circumferential direction, and the movement track of the soldering iron tip or the tin wire feeder is converted into the movement track in the XY rectangular coordinate system. For example, each segment of the linear motion of the soldering tip or wire feeder may be described as moving along at least one of the X-axis alone, the Y-axis alone, or both the X-axis and the Y-axis. Each segment of the curvilinear motion of the tip or wire feeder can also be described as movement along both the X-axis and the Y-axis.
Through the expression mode, the relative motion process of each step of the soldering iron head or the tin wire feeder can be accurately described, and then the motion method can be easily realized by arranging a linkage system comprising an X-axis motion module and a Y-axis motion module on the spot welding machine.
On the basis, in order to realize the relative circumferential movement of the soldering iron head or the tin wire feeder more quickly, an R-axis rotating coordinate system taking a welding point as a rotating center can be established in a plane parallel to the circumferential direction, and at the moment, each section of curvilinear motion of the soldering iron head and the tin wire feeder can be further described as independently rotating around the R axis, or moving along the X axis and rotating around the R axis, or simultaneously moving along the Y axis and rotating around the R axis, or at least one of a plurality of curvilinear motions of rotating around the R axis while moving along the XY axis.
At this time, the linkage system may further include an R-axis rotation module, which is more accurate and simple than a curvilinear motion simulated by the cooperative motion of the X-axis motion module and the Y-axis motion module due to its own structural advantages.
In this embodiment, the solder tip or the wire feeder may be moved relative to each other in the circumferential direction, and thus the manner in which the solder wire feeder moves the solder tip to be stationary or the manner in which the solder tip moves and the solder wire feeder is stationary may be selected.
The spot welder products appearing on the market at present are mainly divided into two categories. One type is a spot welder in which the soldering iron tip or the solder wire feeder is mounted on the same elevation assembly and the two assemblies can only integrally complete the elevation action. The other type is a spot welding machine which is characterized in that a soldering iron head and a tin wire feeder are respectively arranged on lifting assemblies with different heights, and the two lifting assemblies can independently complete lifting action.
The welding method provided by the embodiment is suitable for a single-arm spot welding machine and a double-arm spot welding machine. And in a single arm spot welder, the linkage system 1 can be used to control both the wire feeder 2 (see fig. 1) and the soldering tip 3 (see fig. 2). Also in a double arm spot welder, the linkage system 1 can be used to control both the wire feeder 2 (see fig. 3) and the soldering tip 3 (see fig. 4).
In summary, the welding method of the spot welding machine provided by the embodiment of the application can effectively improve the welding quality.
In the embodiments of the present application, the difference between the embodiments is described in detail, and different optimization features between the embodiments can be combined to form a better embodiment as long as the differences are not contradictory, and further description is omitted here in view of brevity of the text.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A welding method of a spot welding machine is characterized by comprising the following steps:
moving a soldering iron head to a welding spot to be welded and preheating a welding disc and a device pin of the welding spot;
controlling a tin wire feeder to convey a tin wire to the soldering iron head and melt the tin wire, and then forming a thermal bridge among the soldering iron head, the bonding pad and the device pin and continuously melting the tin wire;
in the process that the tin wire is continuously melted, the tin wire feeder is adopted to continuously feed the tin wire, and meanwhile, the soldering bit or the tin wire feeder is enabled to relatively move around the circumferential direction of the welding point;
the relative movement of the tip or the wire feeder gradually moves the wire out of contact with the tip and away from the tip while maintaining contact with the pad and/or the device pin.
2. A method of soldering in a spot welder according to claim 1, wherein in the step of relatively moving the soldering tip or the wire feeder circumferentially around the solder joint:
the circumferential relative movement of the soldering iron head or the tin wire feeder comprises one or more sections of linear motion.
3. A method of soldering in a spot welder according to claim 2, wherein in the step of relatively moving the soldering tip or the wire feeder circumferentially around the solder joint:
and establishing an XY rectangular coordinate system with the welding point as an origin in a plane parallel to the circumferential direction, wherein each section of linear motion of the soldering iron head or the tin wire feeder is at least one of independently moving along an X axis, independently moving along a Y axis and simultaneously moving along the X axis and the Y axis.
4. A method of soldering in a spot welder according to claim 1, wherein in the step of relatively moving the soldering tip or the wire feeder circumferentially around the solder joint:
the relative circumferential movement of the soldering iron tip or the tin wire feeder comprises one or more sections of curvilinear motion.
5. A method of soldering by a spot welder as claimed in claim 4, characterized in that in the step of moving said soldering iron tip or said tin wire feeder relatively circumferentially around said solder joint:
and establishing an XY rectangular coordinate system with the welding spot as an origin in a plane parallel to the circumferential direction, wherein each section of curvilinear motion of the soldering iron head or the tin wire feeder moves along an X axis and a Y axis simultaneously.
6. A method of soldering by a spot welder as claimed in claim 4, characterized in that in the step of moving said soldering iron tip or said tin wire feeder relatively circumferentially around said solder joint:
and establishing an XY rectangular coordinate system taking the welding point as an origin point and an R-axis rotating coordinate system taking the welding point as a rotating center in a plane parallel to the circumferential direction, wherein each section of curvilinear motion of the soldering iron head or the tin wire feeder is at least one of independently rotating around the R axis, simultaneously moving along the X axis and rotating around the R axis, simultaneously moving along the Y axis and rotating around the R axis, and simultaneously moving around the XY axis and rotating around the R axis.
7. A method of soldering a spot welder according to any of the claims 1 to 6, characterized in that in the step of relatively moving the soldering tip or the tin wire feeder circumferentially around the solder joint:
the tin wire feeder moves, and the soldering iron head is static.
8. A method of soldering a spot welder according to any of the claims 1 to 6, characterized in that in the step of relatively moving the soldering tip or the tin wire feeder circumferentially around the solder joint:
the soldering iron head moves, and the tin wire feeder is static.
9. The welding method of a spot welder according to any of claims 1 to 6, characterized in that the spot welder is a single arm spot welder.
10. The welding method of a spot welder according to any of claims 1 to 6, characterized in that the spot welder is a double-arm spot welder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910384161.8A CN110125501B (en) | 2019-05-09 | 2019-05-09 | Welding method of spot welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910384161.8A CN110125501B (en) | 2019-05-09 | 2019-05-09 | Welding method of spot welding machine |
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| CN110125501A CN110125501A (en) | 2019-08-16 |
| CN110125501B true CN110125501B (en) | 2021-05-14 |
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| CN201910384161.8A Active CN110125501B (en) | 2019-05-09 | 2019-05-09 | Welding method of spot welding machine |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002043738A (en) * | 2000-05-18 | 2002-02-08 | Ricoh Microelectronics Co Ltd | Soldering apparatus and production system provided with the same |
| CN202212662U (en) * | 2011-07-21 | 2012-05-09 | 谭永福 | Simulated manual soldering device |
| CN203610811U (en) * | 2013-11-16 | 2014-05-28 | 周海涛 | Automatic floating machine |
| CN105499738A (en) * | 2016-01-21 | 2016-04-20 | 深圳市科美达自动化设备有限公司 | Tin soldering method for commutator pin of carbon brush motor rotor |
| CN206689573U (en) * | 2017-04-28 | 2017-12-01 | 深圳市金加达科技有限公司 | Four station integrated tin soldering machines |
| CN208450793U (en) * | 2018-06-29 | 2019-02-01 | 潍坊路加精工有限公司 | Welding gun mechanism |
-
2019
- 2019-05-09 CN CN201910384161.8A patent/CN110125501B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002043738A (en) * | 2000-05-18 | 2002-02-08 | Ricoh Microelectronics Co Ltd | Soldering apparatus and production system provided with the same |
| CN202212662U (en) * | 2011-07-21 | 2012-05-09 | 谭永福 | Simulated manual soldering device |
| CN203610811U (en) * | 2013-11-16 | 2014-05-28 | 周海涛 | Automatic floating machine |
| CN105499738A (en) * | 2016-01-21 | 2016-04-20 | 深圳市科美达自动化设备有限公司 | Tin soldering method for commutator pin of carbon brush motor rotor |
| CN206689573U (en) * | 2017-04-28 | 2017-12-01 | 深圳市金加达科技有限公司 | Four station integrated tin soldering machines |
| CN208450793U (en) * | 2018-06-29 | 2019-02-01 | 潍坊路加精工有限公司 | Welding gun mechanism |
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| CN110125501A (en) | 2019-08-16 |
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