CN116586830B - Pre-welding preheating device with movable heat source and pre-welding preheating welding method - Google Patents
Pre-welding preheating device with movable heat source and pre-welding preheating welding methodInfo
- Publication number
- CN116586830B CN116586830B CN202310487567.5A CN202310487567A CN116586830B CN 116586830 B CN116586830 B CN 116586830B CN 202310487567 A CN202310487567 A CN 202310487567A CN 116586830 B CN116586830 B CN 116586830B
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- Prior art keywords
- preheating
- welding
- workpiece
- welded
- heating
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Classifications
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
-
- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups B23K1/00 - B23K28/00
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups B23K1/00 - B23K28/00 relating to soldering or welding
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
- B23K37/04—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a pre-welding preheating device with a movable heat source and a pre-welding preheating welding method, wherein the device comprises a workpiece clamping mechanism, a heating mechanism and an off-line programming system; the off-line programming system is used for presetting the preheating position of the heating mechanism and controlling the heating mechanism to adjust the preheating position and the preheating time of the workpiece. The method is carried out by the device. The welding seam preheating device has the advantages that the position and the preheating time of the welding seam are preset in the off-line programming system, the heating mechanism moves to the preheating position according to signals to preheat the welding seam, the workpiece clamping mechanism has a fixing effect on the workpiece main body, and the welding seam is positioned and tracked conveniently by matching with the heating mechanism, so that automatic preheating is realized, the preheating efficiency is improved, and the welding quality is improved. The lower part is automatically preheated, and the upper part is welded in time, so that workpieces do not need to be frequently conveyed or the preheating position is manually adjusted, and efficient and reliable welding is performed.
Description
Technical Field
The invention relates to the technical field of pre-welding preheating, in particular to a pre-welding preheating device with a movable heat source and a pre-welding preheating welding method.
Background
The steel structure is a commonly used industrial and building member, in order to meet the structural load-bearing requirement of the steel structure, the steel structure is generally welded by a large number of steel plates or steel pipes, so that the steel structure is required to ensure enough high welding quality in the welding process, and defects such as cracks are extremely easy to generate in the welding process, the strength of the steel structure is greatly influenced, and the steel material is required to be preheated to a certain extent in the construction process of the steel structure, so that the defects in the welding implementation process are avoided as much as possible.
In the prior pre-welding preheating of the steel structure, when the to-be-welded points of the workpiece are more and the to-be-welded points are far apart, in order to ensure that each to-be-welded point is in an ideal temperature range before welding, multiple times of preheating and multiple times of station adjustment are needed to achieve the aim of preheating, so that time and labor are wasted, and the preheating and the welding are separated to easily cause heat dissipation, so that the welding quality is influenced.
Disclosure of Invention
The invention aims to solve the technical problems of low preheating efficiency before welding of a steel structure, difficult preheating position adjustment and separate preheating and welding in the prior art. The pre-welding preheating device and the pre-welding preheating welding method with the movable heat source are high in pre-welding preheating efficiency and capable of timely welding after pre-welding preheating.
In order to solve the technical problems, the invention adopts the following technical scheme:
The preheating device before welding with the movable heat source comprises a workpiece clamping mechanism, a heating mechanism, an off-line programming system and a central control system, wherein the workpiece clamping mechanism is used for clamping a workpiece to be welded, the off-line programming system is preset with coordinates of points to be welded of the workpiece, the heating mechanism is provided with the movable heat source, and the heating mechanism moves to the points to be welded of the workpiece to be preheated under the control of the central control system.
As a further improvement of the above scheme:
the workpiece comprises a main part, the workpiece clamping mechanism comprises a jacking cylinder, a pressing cylinder and a workpiece clamping servo motor, and a cylinder push rod of the jacking cylinder and the pressing cylinder is horizontally and transversely adjusted by the servo motor to be used for fixedly clamping the main part.
The workpiece also includes an accessory temporarily secured to the main part by a human or robot to await welding.
The heat source is a heating coil for heating the point to be welded through electromagnetic induction, and the heating coil is controlled to displace through a heating servo travelling mechanism.
The off-line programming system is pre-provided with a pre-welding preheating standard reaching temperature, and the heating mechanism further comprises a temperature sensor for judging whether the temperature of the point to be welded reaches the standard or not.
After the workpiece clamping mechanism finishes clamping the main part, the heating coil is positioned below the main part.
And a temperature measuring hole is formed in the heating coil, and the temperature sensor is fixed under the temperature measuring hole, so that the surface temperature of the workpiece can be conveniently and directly measured through the temperature measuring hole.
The servo travelling mechanism controls the heating coil to horizontally and transversely move.
The pre-welding preheating welding method is carried out by the pre-welding preheating device with the movable heat source, and comprises the following steps of:
S1, off-line programming, namely setting a preheating point position of a heating mechanism and a preheating standard reaching temperature according to the point position to be welded of a workpiece;
S2, clamping the workpiece, namely clamping the main workpiece, and then clamping the accessories one by one according to a preset sequence;
And S3, running a preheating program and welding, namely setting a heating coil according to the program, moving the heating coil to the position below the first point to be welded, starting heating after the coil is in place, welding the accessory from the upper part of the main part after the preheating of the first point to be welded is completed, simultaneously moving the coil to the position below the next point to be welded, preheating, and repeating the preheating welding process until all the welding points are completed.
Compared with the prior art, the invention has the advantages that:
The invention provides a pre-welding preheating device with a movable heat source and a pre-welding preheating welding method, wherein the position and the preheating time of a point to be welded are preset in an off-line programming system, so that a heating mechanism moves to the preheating position according to a signal to preheat the point to be welded; the workpiece clamping mechanism plays a role in fixing the workpiece main body, and is convenient to position and track the point to be welded by matching with the heating mechanism, so that automatic preheating is realized, the preheating efficiency is improved, and the subsequent welding quality is ensured. By the welding method of automatic preheating below and timely welding above, workpieces do not need to be frequently conveyed or the preheating position is manually adjusted so as to carry out efficient and reliable welding.
Drawings
FIG. 1 is a schematic perspective view of a heat source movable pre-weld preheating apparatus in accordance with an embodiment of the present invention.
FIG. 2 is a schematic top view of a heat source movable pre-weld preheating apparatus in accordance with an embodiment of the invention.
FIG. 3 is a schematic perspective view of a heat source movable pre-weld preheating apparatus with workpieces in accordance with an embodiment of the invention.
Fig. 4 is a schematic front view of a heat source movable pre-weld preheating apparatus with a workpiece in accordance with an embodiment of the invention.
The reference numerals in the drawings denote:
1. The device comprises a workpiece clamping mechanism, a jacking cylinder, a compressing cylinder, a workpiece clamping servo motor, a heating mechanism, a heating coil, a heating servo travelling mechanism, a temperature sensor, a temperature measuring hole, a workpiece 31, a main part, a workpiece 32, an accessory, a workpiece 33 and a point to be welded, wherein the workpiece clamping mechanism, the jacking cylinder, the compressing cylinder, the workpiece clamping servo motor, the heating mechanism, the heating coil, the heating servo travelling mechanism, the temperature sensor, the temperature measuring hole, the workpiece 3 and the point to be welded are arranged.
Detailed Description
The invention will be described in further detail with reference to the drawings and the specific examples.
Fig. 1 to 4 show a pre-welding preheating device with a movable heat source, which comprises a workpiece clamping mechanism 1, a heating mechanism 2, an off-line programming system and a central control system, wherein the workpiece clamping mechanism 1 is used for clamping a workpiece 3 to be welded, the off-line programming system is pre-provided with coordinates of a point 33 to be welded of the workpiece 3, and the heating mechanism 2 is provided with the movable heat source and moves to the point 33 to be welded of the workpiece 3 for preheating under the control of the central control system. In the structure, the position and the preheating time of the point to be welded 33 are preset in the off-line programming system, so that the heating mechanism 2 moves to the preheating position according to the signal to preheat the point to be welded 33, the workpiece clamping mechanism 1 plays a role in fixing the main body of the workpiece 3, and the point to be welded 33 is conveniently positioned and tracked by matching with the heating mechanism 2, thereby realizing automatic preheating, improving the preheating efficiency and improving the welding quality.
In this embodiment, the workpiece 3 includes a main part 31 and an accessory 32, and the workpiece clamping mechanism 1 includes a jacking cylinder 11, a pressing cylinder 12 and a workpiece clamping servo motor 13, and cylinder push rods of the jacking cylinder 11 and the pressing cylinder 12 are horizontally and transversely adjusted by the servo motor to fixedly clamp the main part 31. In this structure, the pressing cylinder 11 clamps the workpiece 3 from the lateral direction, the pressing cylinder 12 clamps the main member 31 from the longitudinal direction, and the attachment 32 can be fixed by a gripper robot or other means.
In the embodiment, the heat source is a heating coil 21 for heating the point to be welded 33 through electromagnetic induction, and the heating coil 21 is controlled to displace through a heating servo travelling mechanism 22 so as to heat the point to be welded 33. In this structure, adopt heating coil 21 to preheat for waiting welding point position 33 through electromagnetic induction, for adopting open fire to heat, more high-efficient, safety, environmental protection, receive off-line programming system's preset signal through heating servo running gear 22, control heating coil 21's displacement and heating time to realize that heating mechanism 2 preheats waiting welding point position 33 of different positions, in order to reach required preheating temperature.
In this embodiment, the off-line programming system is preset with a pre-welding preheating standard reaching temperature, the heating mechanism 2 further includes a temperature sensor 23, and the temperature sensor 23 is in signal connection with the off-line programming system, and is used for judging whether the temperature of the point location 33 to be welded reaches the standard. In this structure, by setting the temperature sensor 23 to monitor whether the preheating position reaches the preset temperature, if the preheating position does not reach the off-line programming system, a signal is transmitted to the heating servo travelling mechanism 22, so that the preheating time is prolonged, the preheating temperature is precisely controlled, and the subsequent welding quality is ensured.
In this embodiment, after the workpiece clamping mechanism 1 completes clamping the main part 31, the heating coil 21 is located below the main part 31. Through this structure, make heating mechanism 2 accomplish preheating the back to preheating the position, can weld work piece 3 in time in the top of work piece 3 through robot or manual work, played preheating and welding mutually support, the effect of mutually supporting, the vice adjustment time of having saved greatly, promote welding efficiency.
In this embodiment, the heating coil 21 is provided with a temperature measuring hole 24, and the temperature sensor 23 is fixed under the temperature measuring hole 24, so as to directly measure the surface temperature of the workpiece through the temperature measuring hole 24. With this structure, the temperature sensor 23 can directly measure the real-time temperature of the surface of the workpiece, avoiding the influence of the heating coil 21 on the measured value.
In this embodiment, the servo traveling mechanism can control the heating coil 21 to horizontally and laterally move. In this structure, induction coil sliding connection carries out lateral displacement through servo running gear steerable on a bar mechanism, and induction coil's width should be greater than the width of work piece 3 to guarantee to produce preheating effect to the waiting welding point position 33 of work piece 3, simple structure, stability can be good.
Method embodiment:
a pre-welding preheating welding method is carried out by a pre-welding preheating device with a movable heat source in the embodiment of the device, and comprises the following steps:
s1, off-line programming, namely setting a preheating point position and a preheating standard reaching temperature of a heating mechanism 2 according to a point position 33 to be welded of a workpiece 3;
s2, clamping the workpiece 3, namely clamping the main parts 31, and then clamping the accessories 32 one by one according to a preset sequence;
And S3, running a preheating program and welding, namely setting the heating coil 21 to move to the position below the first point to be welded 33 according to the program, starting heating after the coil is in place, welding the accessory 32 from the position above the main part 31 after the preheating of the first point to be welded 33 is completed, simultaneously moving the coil to the position below the next point to be welded 33 for preheating, and repeating the preheating welding process until all the welding processes are completed.
In step S3, it is determined by the temperature sensor 23 whether the temperature of the preheating position reaches a preset preheating temperature value to precisely control the preheating temperature. The welding step can adopt robot automatic welding to enable welding to be automatic, so that welding efficiency is improved, welding can be performed manually, application scenes are improved, and equipment cost is reduced. The lower part is automatically preheated, and the upper part is welded in time, so that workpieces 3 do not need to be frequently conveyed or the preheating position is manually adjusted, and efficient and reliable welding is achieved.
While the invention has been described in terms of preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the invention. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention shall fall within the scope of the technical solution of the present invention.
Claims (4)
1. The preheating device before welding with a movable heat source is suitable for multipoint interval welding accessories on the same main part in steel structure manufacturing, and is characterized by comprising a workpiece clamping mechanism (1), a heating mechanism (2), an off-line programming system and a central control system, wherein the workpiece clamping mechanism (1) is used for clamping a workpiece (3) to be welded, the off-line programming system is pre-provided with coordinates of a point (33) to be welded of the workpiece (3), the heating mechanism (2) is provided with a movable heat source, and the heat source moves to the point (33) to be welded of the workpiece (3) to be preheated under the control of the central control system;
The workpiece (3) comprises a main part (31), the workpiece clamping mechanism (1) comprises a jacking cylinder (11), a pressing cylinder (12) and a workpiece clamping servo motor (13), and cylinder push rods of the jacking cylinder (11) and the pressing cylinder (12) are horizontally and transversely adjusted by the servo motor to fixedly clamp the main part (3);
the workpiece (3) further comprises an accessory (32), and the accessory (32) is temporarily fixed on the main part (31) by a human or a robot to wait for welding;
The heat source is a heating coil (21) for heating a point to be welded (33) through electromagnetic induction, and the heating coil (21) is controlled to displace through a heating servo travelling mechanism (22);
The heating mechanism (2) further comprises a temperature sensor (23) for judging whether the temperature of the point to be welded (33) meets the standard or not;
after the workpiece clamping mechanism (1) is used for clamping the main part (31), the heating coil (21) is positioned below the main part (31).
2. The pre-welding preheating device with a movable heat source according to claim 1, wherein the heating coil (21) is provided with a temperature measuring hole (24), and the temperature sensor (23) is fixed under the temperature measuring hole (24) so as to directly measure the surface temperature of the workpiece through the temperature measuring hole (24).
3. The pre-welding preheating device with movable heat source according to claim 2, wherein the servo traveling mechanism controls the heating coil (21) to horizontally and transversely move.
4. A pre-welding method, characterized in that the method is carried out by the pre-welding device with the movable heat source according to any one of claims 1 to 3, and comprises the following steps:
S1, off-line programming, namely setting a preheating point position and a preheating standard reaching temperature of a heating mechanism (2) according to a point position (33) to be welded of a workpiece (3);
S2, clamping the workpiece (3), namely clamping the main part (31), and then clamping the accessories (32) one by one according to a preset sequence;
and S3, running a preheating program and welding, namely setting a heating coil (21) according to the program, moving the heating coil to the position below the first point to be welded (33), starting heating after the coil is in place, welding the accessory (32) from the position above the main part (31) after the preheating of the first point to be welded (33) is completed, simultaneously moving the coil to the position below the next point to be welded (33), preheating, and repeating the preheating welding process until all the points to be welded are finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310487567.5A CN116586830B (en) | 2023-04-28 | 2023-04-28 | Pre-welding preheating device with movable heat source and pre-welding preheating welding method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310487567.5A CN116586830B (en) | 2023-04-28 | 2023-04-28 | Pre-welding preheating device with movable heat source and pre-welding preheating welding method |
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| Publication Number | Publication Date |
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| CN116586830A CN116586830A (en) | 2023-08-15 |
| CN116586830B true CN116586830B (en) | 2025-11-21 |
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| CN202310487567.5A Active CN116586830B (en) | 2023-04-28 | 2023-04-28 | Pre-welding preheating device with movable heat source and pre-welding preheating welding method |
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| CN117961411B (en) * | 2024-03-08 | 2024-12-20 | 中山市高美佳厨卫配件有限公司 | Positioning and butt-joint device for welding stainless steel plates |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108907448A (en) * | 2018-07-11 | 2018-11-30 | 中南大学 | A kind of pair of slab copper aluminum dissimilar metal back side carries out the Friction stir welding method of mobile heating |
| CN114535753A (en) * | 2022-02-18 | 2022-05-27 | 厦门航天思尔特机器人系统股份公司 | Preheating and welding integrated automatic system and method |
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| JPH1187805A (en) * | 1997-09-11 | 1999-03-30 | Seiko Instr Inc | Laser marker |
| CA2265297C (en) * | 1998-03-31 | 2002-10-29 | Illinois Tool Works Inc. | Method and apparatus for welding |
| JP4970292B2 (en) * | 2008-01-08 | 2012-07-04 | 富士通株式会社 | Electronic component repair method, repair device, and wiring board unit |
| CN106392237A (en) * | 2016-10-09 | 2017-02-15 | 珠海格力电器股份有限公司 | Induction brazing equipment and method |
| US11458691B2 (en) * | 2019-08-06 | 2022-10-04 | The Boeing Company | Induction welding using a heat sink and/or cooling |
| US11524467B2 (en) * | 2019-08-06 | 2022-12-13 | The Boeing Company | Induction welding using a heat sink and/or cooling |
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- 2023-04-28 CN CN202310487567.5A patent/CN116586830B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108907448A (en) * | 2018-07-11 | 2018-11-30 | 中南大学 | A kind of pair of slab copper aluminum dissimilar metal back side carries out the Friction stir welding method of mobile heating |
| CN114535753A (en) * | 2022-02-18 | 2022-05-27 | 厦门航天思尔特机器人系统股份公司 | Preheating and welding integrated automatic system and method |
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