Auxiliary welding device

Abstract

The invention provides an auxiliary welding device. The auxiliary welding device comprises a platform and a positioning mechanism arranged on the platform and used for positioning a workpiece to be welded. The positioning mechanism comprises a first positioning table fixedly arranged at one end of the platform, a second positioning table arranged on the platform in a sliding mode and a roller positioning table arranged between the first positioning table and the second positioning table. The first positioning table and the second positioning table are used for bearing a first workpiece, and the end, away from the platform, of the first positioning table and the first workpiece are designed in a shape-following mode. The rolling positioning table is used for bearing a second workpiece; and a second driving mechanism for driving the first workpiece to rotate is further arranged on the second positioning table. According to the auxiliary welding device, multi-point moving welding of the welding robot is not needed, the welding robot only needs to be fixed to a certain station, the to-be-welded workpiece is rotated through the auxiliary welding device, and welding of all parts of the to-be-welded workpiece can be completed.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, in particular to a device for auxiliary welding. Background Art

[0002] In the machinery manufacturing industry, welding technology is indispensable, and welding quality also directly affects the quality of machined parts. At present, manual welding is still the main method in the field of welding, but manual welding will result in welding errors. For some machined parts with high precision requirements, manual welding cannot meet their precision requirements. For robot welding, if a welding robot with a higher degree of intelligence is used, the cost of welding will increase. Therefore, most mechanical processing companies prefer to choose some lower-cost welding robots. However, such welding robots have low flexibility and low intelligence. In the welding operation of the workpiece, it is not convenient to move the welder at multiple points. Therefore, in the welding operation of such welding robots, it is particularly important to use auxiliary welding devices. Summary of the invention

[0003] Based on this, it is necessary to provide an auxiliary welding device to address the problem that welding robots in the prior art cannot move at multiple points for welding. The auxiliary welding device does not require the welding robot to move at multiple points for welding. The welding robot only needs to be fixed at a certain workstation and the workpiece to be welded can be rotated by the auxiliary welding device to complete the welding of various parts of the workpiece to be welded.

[0004] A device for auxiliary welding, the device for auxiliary welding includes a platform, a positioning mechanism arranged on the platform for positioning a workpiece to be welded; the positioning mechanism includes a first positioning table fixedly arranged at one end of the platform, a second positioning table slidably arranged on the platform, and a rolling positioning table arranged between the first positioning table and the second positioning table; the first positioning table and the second positioning table are respectively used to carry a first workpiece, and the end of the first positioning table away from the platform is designed to conform to the shape of the first workpiece; the rolling positioning table is used to carry a second workpiece; the second positioning table is also provided with a second driving mechanism for driving the first workpiece to rotate.

[0005] Furthermore, a linear guide rail is arranged on the platform, and a sliding block matching the linear guide rail is arranged at the bottom of the second positioning platform.

[0006] Furthermore, the second positioning platform includes a horizontal connecting plate and a vertical connecting plate arranged in the middle of the horizontal connecting plate; the sliding block is arranged on a side of the horizontal connecting plate away from the vertical connecting plate; a second rotating shaft is arranged at one end of the vertical connecting plate away from the horizontal connecting plate, one end of the second rotating shaft is fixedly connected to the first workpiece, and the other end of the second rotating shaft is connected to the output end of the second driving mechanism.

[0007] Furthermore, the second positioning platform also includes a column for carrying the first workpiece, two adjacent surfaces of the column are respectively in contact with the horizontal connecting plate and the vertical connecting plate, and the upper end of the column is designed to follow the shape of the first workpiece.

[0008] Furthermore, a first driving mechanism is provided on a side of the first positioning platform away from the first workpiece, and a first rotating shaft is provided through the first positioning platform, one end of the first rotating shaft is fixedly connected to the first workpiece, and the other end of the first rotating shaft is connected to an output end of the first driving mechanism, and the first driving mechanism drives the first workpiece to rotate.

[0009] Furthermore, the rolling positioning platform includes a bracket and two rollers arranged on the bracket, the two rollers abut against each other to form a V-shaped bearing area, and the second workpiece is placed in the V-shaped bearing area.

[0010] Furthermore, the rolling positioning platforms are provided in two groups, one group of rolling positioning platforms is close to the first positioning platform, and the other group of rolling positioning platforms is close to the second positioning platform.

[0011] Furthermore, a third driving mechanism is arranged between the two groups of rolling positioning platforms, and the third driving mechanism is provided with two output ends, and the output ends are rotationally connected to the rollers at both ends. The third driving mechanism drives each of the rollers to rotate in the same direction, and the rollers rotate synchronously with the first rotating shaft or the second rotating shaft.

[0012] Furthermore, the roughness of the roller surface is greater than the roughness of the second workpiece surface.

[0013] The present invention provides an auxiliary welding device, which is provided by placing the first workpiece and the second workpiece to be welded on the first positioning table, the second positioning table and the rolling positioning table respectively, wherein the second positioning table and / or the first positioning table can drive the first workpiece to rotate under the drive of the driving mechanism. When the welding robot is welding, the welding robot is fixed at a station, and the welding robot welds the contact surface of the first workpiece and the second workpiece in the weldable area. After the welding of the weldable area is completed, the driving mechanism is started, and the driving mechanism drives the first workpiece to rotate. Since the welding of the first workpiece and the partial area of ​​the second workpiece has been completed, the second workpiece can be driven to rotate synchronously on the rolling positioning table while the first workpiece rotates, so that the welding robot can complete all the welding of the first workpiece and the second workpiece in the circumferential direction at the fixed station. Therefore, the auxiliary welding device provided by the present invention can improve the efficiency and accuracy of welding of ordinary welding robots and reduce the cost of welding.

[0014] In addition, the present invention provides an auxiliary welding device, wherein the second positioning platform can slide along the platform, so as to be applicable to the welding of workpieces of different lengths, and has a wide range of applications. For the welding of large workpieces, the present invention also provides a third driving mechanism, which rotates synchronously with the first driving mechanism and / or the second driving mechanism, thereby driving the two rollers of the rolling positioning platform to rotate in the same direction, that is, the second workpiece thereon is driven to rotate synchronously with the first workpiece through the roller, thereby completing all circumferential welding work of the first workpiece and the second workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of a first embodiment of an auxiliary welding device of the present invention;

[0016] Figure 2 Schematic diagram of the overall structure of the first embodiment of the present invention

[0017] Figure 3 The overall structure diagram of the third embodiment of the auxiliary welding device of the present invention is as follows

[0018] Reference numerals

[0019] 100 workpiece, 200 platform, 300 positioning mechanism, 110 first workpiece, 120 second workpiece, 210 linear guide rail, 310 first positioning platform, 320 second positioning platform, 330 rolling positioning platform, 350 second driving mechanism, 360 first driving mechanism, 370 third driving mechanism, 321 slider, 322 horizontal connecting plate, 323 vertical connecting plate, 324 column, 331 bracket, 332 roller, 351 second rotating shaft, 361 first rotating shaft. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0021] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a centered element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a centered element at the same time. The terms "vertical", "horizontal", "left", "right", "top", "bottom", "bottom end", "top end" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0023] The present invention provides an auxiliary welding device, comprising a platform and a positioning mechanism arranged on the platform for positioning a workpiece to be welded; the positioning mechanism comprises a first positioning platform fixedly arranged at one end of the platform, a second positioning platform slidably arranged on the platform, and a roller positioning platform arranged between the first positioning platform and the second positioning platform; the first positioning platform and the second positioning platform are used to carry a first workpiece, and the end of the first positioning platform away from the platform is designed to conform to the shape of the first workpiece; the rolling positioning platform is used to carry a second workpiece; and the second positioning platform is also provided with a second driving mechanism for driving the first workpiece to rotate.

[0024] The present invention provides an auxiliary welding tool, which is provided by placing the first workpiece and the second workpiece to be welded on the first positioning platform, the second positioning platform and the rolling positioning platform respectively, wherein the second positioning platform can drive the first workpiece to rotate under the drive of the driving mechanism, when the welding robot is welding, the welding robot is fixed at a station, and the welding robot welds the contact surface of the first workpiece and the second workpiece in the weldable area, after the welding of the weldable area is completed, the driving mechanism is started, and the driving mechanism drives the first workpiece to rotate, because the first workpiece and the partial area of ​​the second workpiece have been welded, so while the first workpiece rotates, the second workpiece can be driven to rotate synchronously on the rolling positioning platform, so that the welding robot can complete all the welding of the first workpiece and the second workpiece in the circumferential direction at the fixed station. Therefore, the auxiliary welding device provided by the present invention can improve the efficiency and accuracy of welding of ordinary welding robots and reduce the cost of welding. In addition, the present invention provides an auxiliary welding device, wherein the second positioning platform can slide along the platform, so that it is suitable for welding of workpieces of different lengths, and has a wide range of applications.

[0025] The auxiliary welding device is described below in conjunction with specific embodiments to further understand the inventive concept of the auxiliary welding device.

[0026] Embodiment Example 1:

[0027] In one embodiment, if Figure 1As shown, an auxiliary welding device includes a platform 200, a positioning mechanism 300 arranged on the platform 200 for positioning the workpiece 100 to be welded; the workpiece to be welded includes at least one first workpiece 110 and a second workpiece 120; the positioning mechanism 300 includes a first positioning table 310 fixedly arranged at one end of the platform 300, a second positioning table 320 slidably arranged on the platform 300, and a rolling positioning table 330 arranged between the first positioning table 310 and the second positioning table 320; specifically, at least one linear guide rail 210 is arranged on the platform 200, and a slider 321 matching the linear guide rail 210 is arranged at the bottom of the second positioning table 320, and the slider 321 slides back and forth along the linear guide rail 340, thereby changing the distance between the first positioning table 310 and the second positioning table 320 to meet the welding requirements of the first workpiece 110 and the second workpiece 120 of different lengths. Preferably, two mutually parallel linear guide rails 210 are arranged on the platform 200, and sliders 321 cooperating with the linear guide rails 210 are arranged at the bottom of the second positioning platform 320. The first positioning platform 310 and the second positioning platform 320 are respectively used to carry the first workpiece 110. The end of the first positioning platform 320 away from the platform 200 is designed to conform to the shape of the first workpiece 110, which is convenient for placing the first workpiece 110 and keeps the first workpiece 110 stable during the welding operation. The rolling positioning platform 330 is used to carry the second workpiece 120; the second positioning platform 320 is also provided with a second driving mechanism 350 for driving the first workpiece 110 to rotate. The first workpiece 110 is driven to rotate by the second driving mechanism 350, and the second workpiece 120 is also rotated synchronously with the first workpiece 110 by providing the rolling positioning platform 330.

[0028] The present embodiment provides an auxiliary welding device. When performing a welding operation on a first workpiece 110 and a second workpiece 120, the first workpiece 110 is firstly placed on a first positioning table 310 and / or a second positioning table 320, and the second workpiece 120 is placed on a rolling positioning table 330; the second positioning table 320 is moved to make the first workpiece 110 abut against the second workpiece 120, and a welding robot is respectively arranged at the first positioning table 310 and / or the second positioning table 320, that is, next to the contact position between the first workpiece 110 and the second workpiece 120, and the welding robot performs welding operations on the first workpiece 110 and the second workpiece 120 in the weldable area, that is, the first workpiece 110 and the second workpiece 120 are completed. The welding of a part of the area of ​​a workpiece 110 and a second workpiece 120 is then started, and the second driving mechanism 350 is driven by the second driving mechanism 350 to rotate the first workpiece 110. Since the welding of the part of the area of ​​the first workpiece 110 and the second workpiece 120 has been completed, the part of the area of ​​the two has been welded into one. At this time, when the first workpiece 110 rotates, it will also drive the second workpiece 120 to rotate synchronously on the rolling positioning table 330. With the synchronous rotation of the first workpiece 110 and the second workpiece 120, the unwelded area rotates to the area that the welding robot can weld, and the welding robot continues to perform the welding operation until the welding of all areas of the first workpiece 110 and the second workpiece 120 is completed. It should be noted that if both ends of the second workpiece 120 need to weld the first workpiece 110, when the welding robots at the first positioning table 310 and the second positioning table 320 have completed the welding tasks of their respective weldable areas, when the first workpiece 110 rotates, the first workpiece 110 at the other end of the second workpiece 120 also rotates accordingly, so that the welding robot completes the welding of all areas of the first workpiece 110 at both ends of the second workpiece 120 at a fixed station.

[0029] Furthermore, if Figure 1The second positioning platform 320 shown includes a horizontal connecting plate 322 and a vertical connecting plate 323 arranged in the middle of the horizontal connecting plate 322; the slider 321 is arranged on a side of the horizontal connecting plate 322 away from the vertical connecting plate 323; the end of the vertical connecting plate 323 away from the horizontal connecting plate 322 is provided with a through second rotating shaft 351, one end of the second rotating shaft 351 is fixedly connected to the first workpiece 110, and the other end of the second rotating shaft 351 is connected to the output end of the second driving mechanism 350. The horizontal connecting plate 322 and the vertical connecting plate 323 can be integrally formed or welded. Specifically, a hole for installing the second rotating shaft 351 is reserved at the upper end of the vertical connecting plate 323, and the second rotating shaft 351 and the hole can be connected through a bearing. The end of the second rotating shaft 351 close to the first workpiece 110 is fixedly connected to the first workpiece 110, and its fixed connection method is not limited to screw connection and clamping. The second driving mechanism 350 is arranged on a side of the vertical connecting plate 323 away from the first workpiece 110, and the second driving mechanism 350 includes a motor 352 fixed on the horizontal connecting plate 322. A driving sprocket is arranged at the output end of the output shaft of the motor 352, and a driven sprocket is arranged at the end of the second rotating shaft 351 away from the first workpiece 110. The driving sprocket and the driven sprocket are connected by a chain 353. That is, when the motor 352 is started, the output shaft of the motor 352 rotates, and under the transmission action of the chain 353, the driving sprocket and the driven sprocket, the second rotating shaft 351 will rotate under the driving action of the motor 352, thereby driving the first workpiece 110 to rotate.

[0030] Furthermore, if Figure 2 As shown, the second positioning platform 220 further includes a column 324 for carrying the first workpiece 110, and two adjacent surfaces of the column 324 are respectively in contact with the horizontal connecting plate 322 and the vertical connecting plate 323, and the upper end of the column 324 is designed to conform to the shape of the first workpiece 110. That is, the first workpiece 110 is accommodated in the accommodating space designed to conform to the shape of the upper end of the column 324, ensuring that the first workpiece 110 can rotate stably without swinging or deviating from the second rotation axis.

[0031] Furthermore, if Figure 1-2 As shown, the rolling positioning platform 330 includes a bracket 331 and two rollers 332 arranged on the bracket 331. The two rollers 332 abut against each other to form a V-shaped bearing area, and the second workpiece 120 is placed in the V-shaped bearing area. The rolling positioning platform 330 is provided in two groups, one group of rolling positioning platforms 330 is close to the first positioning platform 310, and the other group of rolling positioning platforms 330 is close to the second positioning body 320. By providing two groups of rolling positioning platforms 330, the resistance of the second workpiece 120 when rotating is further reduced.

[0032] Embodiment 2:

[0033] like Figure 3 The first positioning platform 310 is provided with a first driving mechanism 360 on a side away from the first workpiece 110, and a first rotating shaft 361 is provided through the first positioning platform 310, one end of the first rotating shaft 361 is fixedly connected to the first workpiece 110, and the other end of the first rotating shaft 361 is connected to the output end of the first driving mechanism 360, and the first driving mechanism 360 drives the first workpiece 110 to rotate. In this embodiment, by providing the first platform 310 with the same driving mechanism as the second platform 320, that is, after the welding robots at the first platform 310 and the second platform 320 complete the welding work of the weldable area, the first driving mechanism 360 and the second driving mechanism 350 are started at the same time, and the specifications of the first driving mechanism 360 and the second driving mechanism 350 are the same, so after the first driving mechanism 360 and the second driving mechanism 350 are started at the same time, the two driving mechanisms will respectively drive the two first workpieces 110 to rotate synchronously, and the second workpiece 120 will also rotate synchronously on the rolling positioning platform 330 under the synchronous driving of the rotation force of the first workpieces 110 at both ends. When welding large-sized and heavy workpieces, the initial welding area accounts for a relatively small proportion of the overall area to be welded. Therefore, the first workpiece 110 at one end is used to drive the second workpiece 120 and the first workpiece 110 at the other end to rotate. Because the workpieces are too heavy, when the first workpiece 110 on the second platform 320 rotates, the second workpiece 120 is too heavy and cannot rotate synchronously, which may cause the first workpiece 110 and the second workpiece 120 to rotate. Deviation, thereby damaging the welded area. Based on this, in this embodiment, by also setting a first driving mechanism 360 that drives the first workpiece 110 to rotate on the first platform 310, the first driving mechanism 360 and the second driving mechanism 350 synchronously drive the first workpieces 110 at both ends to rotate synchronously, and then the synchronous rotation of the first workpieces 110 at both ends will generate a force on the middle second workpiece 120, and jointly drive the second workpiece 120 to rotate synchronously, thereby avoiding the problem that the second workpiece 120 cannot be driven to rotate synchronously due to its excessive weight.

[0034] Embodiment 3:

[0035] In this embodiment, Figure 3As shown, a third driving mechanism 370 is provided between the two groups of rolling positioning platforms 310, and the third driving mechanism 370 is provided with two output ends, each output end is provided with two output shafts, each output shaft is rotatably connected with each roller 332, and each roller 332 is driven to rotate in the same direction by the third driving mechanism 370, and the roller 332 rotates synchronously with the first rotating shaft 311 or the second rotating shaft 321. In this embodiment, by also providing the third driving mechanism 370 for the rolling positioning platform 310, the third driving mechanism drives the two rollers 332 to rotate in the same direction, and the same-direction rotation of the two rollers 332 will drive the second workpiece 120 thereon to rotate as well. Therefore, for the welding of large-sized heavy workpieces, the first, second, and third driving mechanisms are rotated synchronously, driving the two first workpieces 110 and the second workpiece 120 to rotate synchronously, further avoiding the problem that the first workpiece 110 cannot drive the second workpiece 110 to rotate synchronously due to the second workpiece being too heavy.

[0036] Preferably, in this embodiment, the roughness of the surface of the roller 332 is greater than the roughness of the surface of the second workpiece 120, thereby increasing the friction between the second workpiece 120 and the roller 332, and preventing the roller 332 and the second workpiece 120 from slipping during rotation.

[0037] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A device for auxiliary welding, characterized in that: The auxiliary welding device comprises a platform (200), and a positioning mechanism (300) arranged on the platform (200) for positioning a workpiece (100) to be welded; the positioning mechanism (300) comprises a first positioning platform (310) fixedly arranged at one end of the platform (300), a second positioning platform (320) slidably arranged on the platform (300), and a rolling positioning platform (330) arranged between the first positioning platform (310) and the second positioning platform (320); the first positioning platform (310) and the second positioning platform (320) are respectively used to carry a first workpiece (110), and an end of the first positioning platform (320) away from the platform (300) is designed to conform to the shape of the first workpiece (110); the rolling positioning platform (330) is used to carry the second workpiece (320); and the second positioning platform (320) is also provided with a second driving mechanism (350) for driving the first workpiece (110) to rotate.

2. The device for auxiliary welding according to claim 2, characterized in that: A linear guide rail (210) is arranged on the platform (200), and a sliding block (321) matching the linear guide rail (210) is arranged at the bottom of the second positioning platform (320).

3. The device for auxiliary welding according to claim 1, characterized in that: The second positioning platform (320) comprises a horizontal connecting plate (322) and a vertical connecting plate (323) arranged in the middle of the horizontal connecting plate (322); the sliding block (321) is arranged on a side of the horizontal connecting plate (322) away from the vertical connecting plate (323); a through second rotating shaft (351) is arranged at one end of the vertical connecting plate (323) away from the horizontal connecting plate (322), one end of the second rotating shaft (351) is fixedly connected to the first workpiece (110), and the other end of the second rotating shaft (351) is connected to the output end of the second driving mechanism (350).

4. An auxiliary welding device according to claim 3 is characterized in that the second positioning platform (220) also includes a column (324) for supporting the first workpiece (110), and two adjacent surfaces of the column (324) are respectively abutted against the horizontal connecting plate (322) and the vertical connecting plate (323), and the upper end of the column (324) is designed to follow the shape of the first workpiece (110).

5. The device for auxiliary welding according to claim 1, characterized in that: A first driving mechanism (360) is provided on a side of the first positioning platform (310) away from the first workpiece (110), and a first rotating shaft (361) is provided through the first positioning platform (310), one end of the first rotating shaft (361) is fixedly connected to the first workpiece (110), and the other end of the first rotating shaft (361) is connected to an output end of the first driving mechanism (360), and the first driving mechanism (360) drives the first workpiece (110) to rotate.

6. The device for auxiliary welding according to claim 1, characterized in that: The rolling positioning platform (330) comprises a support (331) and two rollers (332) arranged on the support (331); the two rollers (332) abut against each other to form a V-shaped bearing area; the second workpiece (120) is placed in the V-shaped bearing area.

7. The device for auxiliary welding according to claim 6, characterized in that: The rolling positioning platforms (330) are arranged in two groups, one group of rolling positioning platforms (330) is close to the first positioning platform (310), and the other group of rolling positioning platforms (330) is close to the second positioning platform (320).

8. The device for auxiliary welding according to claim 6, characterized in that: A third driving mechanism (370) is arranged between the two groups of rolling positioning platforms (310), and the third driving mechanism (370) is provided with two output ends, and the output ends are rotationally connected to the rollers (332) at both ends. The third driving mechanism (370) drives each of the rollers (332) to rotate in the same direction, and the rollers (332) rotate synchronously with the first rotating shaft (361) or the second rotating shaft (351).

9. The device for auxiliary welding according to claim 8, characterized in that: The roughness of the surface of the roller (332) is greater than the roughness of the surface of the second workpiece (120).

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