CN114770004A

CN114770004A - Auxiliary welding positioner for industrial welding robot

Info

Publication number: CN114770004A
Application number: CN202210533980.6A
Authority: CN
Inventors: 杨勇; 张强
Original assignee: Jiangsu Runyang Robot Co ltd
Current assignee: Jiangsu Runyang Robot Co ltd
Priority date: 2022-05-17
Filing date: 2022-05-17
Publication date: 2022-07-22

Abstract

The invention relates to the technical field of workpiece welding and discloses a welding positioner for assisting an industrial welding robot. When the device is used for fixing a workpiece, a fixing mode of top clamping fixing and bottom supporting fixing is adopted, the fixing mode ensures that the power machine I runs and drives the L-shaped mounting plate to incline, both ends of the workpiece can be enabled to be subjected to relatively balanced fixing force, the phenomenon that the traditional equipment only fixes the bottom of the workpiece is avoided, the gravity of the workpiece enables the workpiece to be subjected to relatively large radial acting force when the workpiece is inclined, the workpiece is deformed if the workpiece is thin in wall thickness, and the running stability of the device is improved.

Description

Auxiliary welding positioner for industrial welding robot

Technical Field

The invention relates to the technical field of workpiece welding, in particular to a welding positioner for assisting an industrial welding robot.

Background

Welding is an extremely common skill in the industry, also called as fusion welding, and is a manufacturing process and technology for joining metal or other thermoplastic materials such as plastics in a heating, high-temperature or high-pressure mode, in order to reduce labor cost, an industrial robot is adopted to control welding equipment to operate nowadays, workpieces can be placed on a welding positioner to be subjected to posture adjustment, a traditional welding positioner is controlled by a double-shaft driving system, the workpieces are fixed through a supporting table and a clamp arranged on the supporting table, and therefore the workpieces are driven to change in various postures.

Although current positioner has a great deal of advantage, still have certain limitation in the use of reality, because brace table and anchor clamps all are located the bottom of work piece, when making to the work piece gesture adjustment, the gravity of work piece can lead to self to receive great radial effort, if the texture of work piece is softer or when the thickness is thinner this moment, lead to work piece self to take place deformation, make welding precision descend, to this, this application file provides an auxiliary positioner that uses of industrial welding robot, aim at solving the above-mentioned problem that proposes.

Disclosure of Invention

Aiming at the defects of the conventional welding positioner for assisting the industrial welding robot in the background technology in the use process, the invention provides the welding positioner for assisting the industrial welding robot, which has the advantage of supporting two sides of a workpiece simultaneously and solves the problems in the background technology.

The invention provides the following technical scheme: a welding positioner for assisting an industrial welding robot comprises a bottom plate, wherein a vertical plate is fixedly mounted at a position, close to one side, of the top of the bottom plate, a stroke groove I is formed in one side of the vertical plate, a threaded rod is movably sleeved in the stroke groove I, a driving machine is fixedly mounted at the top of the vertical plate, one end of an output shaft of the driving machine is fixedly connected with the threaded rod, a stroke sleeve is sleeved on the outer surface of the threaded rod through threads, a power machine I is fixedly sleeved in the stroke sleeve, an L-shaped mounting plate is fixedly mounted at one end of the output shaft of the power machine I, a telescopic machine is fixedly mounted at a position, close to a side plate, of the top of the bottom plate of the L-shaped mounting plate, a stroke plate is fixedly mounted at one end of the output shaft of the telescopic machine, a power machine II is fixedly mounted at the top of the stroke plate, and a driving device is fixedly mounted at one end of the output shaft of the power machine II, the bottom fixed mounting of stroke board has clamping device, L type mounting panel bottom plate has seted up circular through-hole on being located the position at center, and the fixed cover in inside of this circular through-hole has connect the bearing, the fixed cover in inside of bearing inner circle has connect the support pivot, the top fixed mounting who supports the pivot has the rotation platform, the work piece has been placed at the top of rotation platform, the work piece cooperatees with clamping device.

Preferably, the driving device comprises a rotating sleeve, the rotating sleeve is fixedly connected with one end of an output shaft of the power machine II, a circular groove is formed in the bottom of the rotating sleeve, a connecting spring is movably sleeved inside the circular groove, a rotating detector is fixedly mounted at the top of the connecting spring and fixedly connected with the connecting spring, a driving plate is fixedly mounted at the bottom of the connecting spring, and the driving plate is in contact with the clamping device.

Preferably, clamping device includes the sleeve, sleeve fixed mounting is in the bottom of stroke board, the ring channel has been seted up to telescopic bottom, and the inside activity of this ring channel has cup jointed the annular slab, stroke groove II has been seted up to the bottom of annular slab, stroke groove II distributes with the mode of ring array, the inside fixed mounting of stroke groove II has the lead screw, the surface of lead screw has cup jointed the screw runner through the screw thread, the surface activity of screw runner has cup jointed the grip block, the both sides of grip block all contact with the both sides of stroke groove II, the activity of the bottom of annular slab is located the position at center and has cup jointed spacing pivot, spacing pivot and drive plate fixed connection.

Preferably, the drive plate is in contact with a threaded wheel.

Preferably, the interface between the sleeve and the annular plate is sanded to increase friction between the two.

Preferably, the rotation detector is communicated with the supporting rotating shaft in a signal connection mode.

The invention has the following beneficial effects:

1. the invention fixedly connects the rotating sleeve with one end of the output shaft of the power machine II, so that the power machine II can drive the rotating sleeve to rotate when running, and drive the driving plate to rotate under the transmission action of the connecting spring and the rotation detector, at the moment, the driving plate is in contact with the threaded rotating wheel, so as to drive the threaded rotating wheel to rotate, as the threaded rotating wheel is sleeved on the outer surface of the screw rod through threads, the threaded rotating wheel can move along the extending direction of the screw rod in the rotating process and continuously approaches to the limit rotating shaft until the clamping plate is in contact with the power machine II, at the moment, the clamping plate reaches the stroke limit, at the moment, the rolling friction between the threaded rotating wheel and the driving plate is changed into static friction, so that the friction is increased, and the friction is larger than the sliding friction between the driving plate and the threaded rotating wheel and is smaller than the forbidden friction between the driving plate and the threaded rotating wheel, thereby it rotates in step to drive clamping device, thereby realize that the work piece rotates, and the grip block comes from the moment of torsion that connecting spring self elasticity provided to the dynamics of work piece centre gripping this moment, and the size of this moment of torsion depends on the quality of work piece self, thereby the realization is to the quality of work piece regulation centre gripping dynamics by oneself, avoid appearing the work piece quality less but the centre gripping dynamics is great to lead to deformation or work piece quality great and the centre gripping dynamics is less and slide and lead to welding position to appear the problem of deviation, the precision of the device in welding process has been improved.

2. According to the invention, the workpiece is placed on the top of the rotating table, and the workpiece is matched with the clamping device, so that when the device is used for fixing the workpiece, a fixing mode of top clamping and fixing and bottom supporting and fixing is adopted, the fixing mode ensures that the L-shaped mounting plate is driven to incline when the power machine I runs, both ends of the workpiece can be subjected to relatively balanced fixing force, the phenomenon that the traditional equipment only fixes the bottom of the workpiece, the workpiece is subjected to relatively large radial acting force due to the gravity of the workpiece when the power machine I inclines, and the workpiece deforms if the workpiece is a workpiece with a relatively thin wall thickness is avoided, so that the equipment related to the application document adopts a mode of fixing both ends to fix the workpiece, the point is well avoided, and the running stability of the device is improved.

3. The invention is characterized in that a driving device is fixedly arranged at one end of an output shaft of a power machine II, so that the power machine which is used for driving a workpiece to rotate along the axis of the power machine II adopts an upper fixing mode, when the workpiece is contacted with a rotating platform, the rotating platform and a supporting rotating shaft are in a structure mainly loading the gravity of the workpiece, the axial acting force applied to the output shaft of the power machine II is weakened, and when an L-shaped mounting plate inclines, the bottom surface of the workpiece is contacted with the rotating platform, so that the radial acting force received by the output shaft of the power machine II is weakened, the load of the output shaft of the power machine II is lightened to the maximum extent, the service life reduction of the power machine caused by the axial and radial acting force applied to the output shaft of the power machine in the traditional device is avoided, the service life of the device is prolonged, in addition, the axial and radial loads of the power machine II are reduced, resulting in more stable output torque and thus improved rotational accuracy.

4. According to the invention, the rotation detector is communicated with the supporting rotating shaft in a signal connection manner, so that the rotating table and the supporting rotating shaft are driven to rotate continuously by the workpiece in the process that the workpiece is contacted with the rotating table, and the rotating speed between the driving device and the clamping device is consistent with the rotating speed of the rotating table and the rotating speed between the driving device and the clamping device along with the continuous enhancement of the acting force between the workpiece and the rotating table until the rotating speed of the rotating table is consistent with the rotating speed of the workpiece, so that the welding equipment is controlled to start to run, the acting force received by the workpiece in the vertical direction is at the minimum value at the moment, the problem of deformation caused by excessive extrusion of the rotating table and the clamping device when the workpiece is soft is avoided, and the protection capability of the device on the workpiece is improved.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

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

FIG. 3 is a schematic cross-sectional view taken along the direction A in FIG. 2 according to the present invention;

FIG. 4 is a schematic cross-sectional view taken along the direction B in FIG. 3 according to the present invention;

FIG. 5 is a schematic rear view of the structure of the present invention;

FIG. 6 is a schematic view of a structural driving device according to the present invention;

FIG. 7 is a front view of the driving device of the present invention;

FIG. 8 is a schematic cross-sectional view taken along direction C in FIG. 7 according to the present invention;

FIG. 9 is a schematic view of a structural clamping device of the present invention;

FIG. 10 is a front view of the structure holding device of the present invention;

FIG. 11 is a schematic cross-sectional view taken along direction D in FIG. 10;

FIG. 12 is a schematic cross-sectional view taken along direction E in FIG. 11 according to the present invention.

In the figure: 1. a base plate; 2. a vertical plate; 3. a stroke groove I; 4. a threaded rod; 5. a driver; 6. a travel sleeve; 7. a power machine I; 8. an L-shaped mounting plate; 9. a stretching machine; 10. a stroke plate; 11. a power machine II; 12. a drive device; 121. rotating the sleeve; 122. a connecting spring; 123. a rotation detector; 124. a drive plate; 13. a clamping device; 131. a sleeve; 132. an annular plate; 133. a stroke groove II; 134. a screw rod; 135. a threaded rotating wheel; 136. a clamping plate; 137. a limiting rotating shaft; 14. a bearing; 15. supporting the rotating shaft; 16. a rotating table; 17. and (5) a workpiece.

Detailed Description

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 only a part of the embodiments of the present invention, 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 invention.

Referring to fig. 1-5, a welding positioner for assisting an industrial welding robot comprises a bottom plate 1, a vertical plate 2 is fixedly mounted at a position close to one side of the top of the bottom plate 1, a stroke groove i 3 is formed at one side of the vertical plate 2, a threaded rod 4 is movably sleeved in the stroke groove i 3, a driver 5 is fixedly mounted at the top of the vertical plate 2, one end of an output shaft of the driver 5 is fixedly connected with the threaded rod 4, a stroke sleeve 6 is sleeved on the outer surface of the threaded rod 4 through threads, a power machine i 7 is fixedly sleeved in the stroke sleeve 6, one end of the output shaft of the power machine i 7 is fixedly mounted with an L-shaped mounting plate 8, a telescopic machine 9 is fixedly mounted at a position close to a side plate at the top of a bottom plate of the L-shaped mounting plate 8, a stroke plate 10 is fixedly mounted at one end of the output shaft of the telescopic machine 9, a power machine ii 11 is fixedly mounted at the top of the stroke plate 10, and a driving device 12 is fixedly mounted at one end of the output shaft of the power machine ii 11, the power machine which is used for driving the workpiece 17 to rotate along the axis of the power machine adopts an upper fixing mode, when the workpiece 17 is contacted with the rotating platform 16, the rotating platform 16 and the supporting rotating shaft 15 are structures mainly loading the gravity of the workpiece 17, so that the axial acting force applied to the output shaft of the power machine II 11 is weakened, and when the L-shaped mounting plate 8 inclines, the bottom surface of the workpiece 17 is contacted with the rotating platform 16, so that the radial acting force received by the output shaft of the power machine II 11 is weakened, the load of the output shaft of the power machine II 11 is lightened to the maximum extent, the service life reduction of the power machine caused by the axial and radial acting force applied to the output shaft of the power machine in the traditional device is avoided, the service life of the device is prolonged, in addition, the axial and radial load of the power machine II 11 is reduced, the output torque is more stable, and the rotating precision is improved, the bottom of the stroke plate 10 is fixedly provided with a clamping device 13, a circular through hole is arranged at the center position of the bottom plate of the L-shaped mounting plate 8, a bearing 14 is fixedly sleeved inside the circular through hole, a supporting rotating shaft 15 is fixedly sleeved inside the inner ring of the bearing 14, a rotating table 16 is fixedly arranged at the top of the supporting rotating shaft 15, a workpiece 17 is placed at the top of the rotating table 16, and the workpiece 17 is matched with the clamping device 13, so that when the device is used for fixing the workpiece 17, a fixing mode of top clamping and bottom supporting fixing is adopted, the fixing mode ensures that the L-shaped mounting plate 8 is driven to incline when the power machine I7 runs, both ends of the workpiece 17 can be subjected to more balanced fixing force, the situation that the traditional equipment only fixes the bottom of the workpiece 17 and causes the gravity of the workpiece 17 to cause the workpiece to be subjected to larger radial acting force when the L-shaped mounting plate inclines, if the workpiece 17 is a workpiece with a thin wall thickness, the workpiece 17 is deformed, so that the equipment related to the application document fixes the workpiece 17 in a mode of fixing two ends, which is avoided well, and the running stability of the device is improved.

Referring to fig. 6-8, the driving device 12 includes a rotating sleeve 121, the rotating sleeve 121 is fixedly connected to one end of an output shaft of the power machine ii 11, so that the power machine ii 11 can drive the rotating sleeve 121 to rotate when running, and the driving plate 124 is driven to rotate by the transmission action of the connecting spring 122 and the rotation detector 123, at this time, the driving plate 124 contacts with the threaded rotating wheel 135 to drive the threaded rotating wheel 135 to rotate, because the threaded rotating wheel 135 is sleeved on the outer surface of the lead screw 134 through the thread, the threaded rotating wheel 135 can move along the extending direction of the lead screw 134 during the rotation process, and continuously approaches the limiting rotating shaft 137 until the clamping plate 136 contacts with the power machine ii 11, at this time, the clamping plate 136 reaches the stroke limit, and at this time, the rolling friction between the threaded rotating wheel 135 and the driving plate 124 changes to static friction to increase the friction force, the friction force is larger than the sliding friction force between the driving plate 124 and the threaded rotating wheel 135 and smaller than the forbidden friction force between the driving plate 124 and the threaded rotating wheel 135, so that the clamping device 13 is driven to synchronously rotate, the workpiece 17 rotates, the clamping force of the clamping plate 136 for clamping the workpiece 17 is from the torque provided by the elastic force of the connecting spring 122, and the torque depends on the quality of the workpiece 17, so that the clamping force is automatically adjusted for the quality of the workpiece 17, the problem that the welding position is deviated due to deformation caused by small quality of the workpiece 17 but large clamping force or deviation caused by sliding caused by large quality of the workpiece 17 but small clamping force is avoided, the accuracy of the device in the welding process is improved, the bottom of the rotating sleeve 121 is provided with a circular groove, and the connecting spring 122 is movably sleeved in the circular groove, the top of the connecting spring 122 is fixedly provided with a rotation detector 123, the rotation detector 123 is fixedly connected with the connecting spring 122, the bottom of the connecting spring 122 is fixedly provided with a driving plate 124, and the driving plate 124 is in contact with the clamping device 13.

Referring to fig. 9-12, the clamping device 13 includes a sleeve 131, the sleeve 131 is fixedly mounted at the bottom of the stroke plate 10, an annular groove is formed at the bottom of the sleeve 131, an annular plate 132 is movably sleeved inside the annular groove, stroke grooves ii 133 are formed at the bottom of the annular plate 132, the stroke grooves ii 133 are distributed in an annular array manner, a lead screw 134 is fixedly mounted inside the stroke groove ii 133, a threaded rotating wheel 135 is sleeved on an outer surface of the lead screw 134 through a thread, a clamping plate 136 is movably sleeved on an outer surface of the threaded rotating wheel 135, both sides of the clamping plate 136 are in contact with both sides of the stroke groove ii 133, a limiting rotating shaft 137 is movably sleeved at a position of the center of the bottom of the annular plate 132, and the limiting rotating shaft 137 is fixedly connected with the driving plate 124.

Referring to fig. 8-9, the drive plate 124 is in contact with the threaded rotor 135.

Referring to fig. 6-12, the interface between the sleeve 131 and the annular plate 132 is sanded to increase the friction therebetween, which is greater than the sliding friction between the drive plate 124 and the threaded rotor 135 and less than the forbidden friction between the drive plate 124 and the threaded rotor 135.

Referring to fig. 3-4, the rotation detector 123 is in signal connection with the supporting spindle 15, so that the rotating table 16 and the supporting spindle 15 are driven by the workpiece 17 to rotate while the workpiece 17 is in contact with the rotating table 16, and the acting force between the workpiece 17 and the rotating table 16 is increased continuously until the rotating speed of the rotating table 16 is the same as the rotating speed of the workpiece 17 and the rotating speed between the driving device 12 and the clamping device 13 is the same, so as to control the welding equipment to start to operate, wherein the acting force received by the workpiece 17 in the vertical direction is at the minimum value, thereby avoiding the problem of deformation caused by excessive extrusion of the rotating table 16 and the clamping device 13 when the workpiece 17 is soft, and improving the protection capability of the device on the workpiece 17.

The using method of the invention is as follows:

in the using process, a workpiece 17 is placed on the top of the rotating table 16, the clamping plate 136 corresponds to the top of the workpiece 17 through the adjustment of the expander 9, the power machine II 11 is started to drive the driving device 12 to rotate, the driving plate 124 is driven to rotate through the transmission action of the connecting spring 122 and the rotation detector 123, the threaded rotating wheel 135 is sleeved on the outer surface of the screw rod 134 through threads, so that the threaded rotating wheel 135 moves along the extending direction of the screw rod 134 in the rotating process and continuously approaches the limiting rotating shaft 137 until the clamping plate 136 is contacted with the power machine II 11, the clamping plate 136 reaches the stroke limit, the rolling friction between the threaded rotating wheel 135 and the driving plate 124 is changed into static friction, the friction is increased, and the friction is greater than the sliding friction between the driving plate 124 and the threaded rotating wheel 135 and smaller than the forbidden friction between the driving plate 124 and the threaded rotating wheel 135, the clamping device 13 is driven to synchronously rotate, so that the workpiece 17 rotates, the clamping force of the clamping plate 136 for clamping the workpiece 17 comes from the torque provided by the self elastic force of the connecting spring 122, and the magnitude of the torque depends on the self mass of the workpiece 17, so that the clamping force can be automatically adjusted for the mass of the workpiece 17, the device is used for driving the power machine for rotating the workpiece 17 along the axis of the power machine to adopt an upper fixing mode, so that when the workpiece 17 is in contact with the rotating table 16, the rotating table 16 and the supporting rotating shaft 15 are in a structure mainly loading the gravity of the workpiece 17, so that the axial acting force applied to the output shaft of the power machine II 11 is weakened, and when the L-shaped mounting plate 8 inclines, as the bottom surface of the workpiece 17 is in contact with the rotating table 16, the radial acting force received by the output shaft of the power machine II 11 is weakened, the load of the output shaft of the power machine II 11 is furthest lightened, in the process that the workpiece 17 is in contact with the rotating table 16, the rotating table 16 and the supporting rotating shaft 15 are driven by the workpiece 17 to rotate continuously, the rotating speed between the driving device 12 and the clamping device 13 is consistent with the rotating speed of the workpiece 17 as the acting force between the workpiece 17 and the rotating table 16 is increased continuously until the rotating speed of the rotating table 16 is consistent with the rotating speed of the workpiece 17, and therefore the welding equipment is controlled to start to operate, and the acting force received by the workpiece 17 in the vertical direction is at the minimum value.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an auxiliary positioner that uses of industry welding robot, includes bottom plate (1), its characterized in that: a vertical plate (2) is fixedly mounted at a position, close to one side, of the top of the bottom plate (1), a stroke groove I (3) is formed in one side of the vertical plate (2), a threaded rod (4) is movably sleeved in the stroke groove I (3), a driving machine (5) is fixedly mounted at the top of the vertical plate (2), one end of an output shaft of the driving machine (5) is fixedly connected with the threaded rod (4), a stroke sleeve (6) is sleeved on the outer surface of the threaded rod (4) through threads, a power machine I (7) is fixedly sleeved in the stroke sleeve (6), an L-shaped mounting plate (8) is fixedly mounted at one end of an output shaft of the power machine I (7), an expansion machine (9) is fixedly mounted at a position, close to a side plate, of the top of a bottom plate of the L-shaped mounting plate (8), and a stroke plate (10) is fixedly mounted at one end of an output shaft of the expansion machine (9), the hydraulic power machine is characterized in that a power machine II (11) is fixedly mounted at the top of the stroke plate (10), a driving device (12) is fixedly mounted at one end of an output shaft of the power machine II (11), a clamping device (13) is fixedly mounted at the bottom of the stroke plate (10), a circular through hole is formed in the position, located at the center, of a bottom plate of the L-shaped mounting plate (8), a bearing (14) is fixedly sleeved inside the circular through hole, a supporting rotating shaft (15) is fixedly sleeved inside an inner ring of the bearing (14), a rotating table (16) is fixedly mounted at the top of the supporting rotating shaft (15), a workpiece (17) is placed at the top of the rotating table (16), and the workpiece (17) is matched with the clamping device (13).

2. The welding positioner for the auxiliary of the industrial welding robot as claimed in claim 1, wherein: the driving device (12) comprises a rotating sleeve (121), the rotating sleeve (121) is fixedly connected with one end of an output shaft of the power machine II (11), a circular groove is formed in the bottom of the rotating sleeve (121), a connecting spring (122) is movably sleeved inside the circular groove, a rotating detector (123) is fixedly installed at the top of the connecting spring (122), the rotating detector (123) is fixedly connected with the connecting spring (122), a driving plate (124) is fixedly installed at the bottom of the connecting spring (122), and the driving plate (124) is in contact with the clamping device (13).

3. The auxiliary welding positioner for the industrial welding robot as claimed in claim 2, wherein: the clamping device (13) comprises a sleeve (131), the sleeve (131) is fixedly arranged at the bottom of the stroke plate (10), an annular groove is formed in the bottom of the sleeve (131), an annular plate (132) is movably sleeved in the annular groove, a stroke groove II (133) is arranged at the bottom of the annular plate (132), the stroke grooves II (133) are distributed in an annular array mode, a screw rod (134) is fixedly installed inside the stroke grooves II (133), the outer surface of the screw rod (134) is sleeved with a threaded rotating wheel (135) through threads, the outer surface of the threaded rotating wheel (135) is movably sleeved with a clamping plate (136), both sides of the clamping plate (136) are in contact with both sides of the stroke groove II (133), the bottom of the annular plate (132) is movably sleeved with a limiting rotating shaft (137) in the center, and the limiting rotating shaft (137) is fixedly connected with the driving plate (124).

4. The auxiliary welding positioner for the industrial welding robot as claimed in claim 3, wherein: the drive plate (124) is in contact with a threaded rotating wheel (135).

5. The auxiliary welding positioner for the industrial welding robot as claimed in claim 3, wherein: the interface between the sleeve (131) and the annular plate (132) is sanded to increase friction between the two.

6. The auxiliary welding positioner for the industrial welding robot as claimed in claim 2, wherein: the rotation detector (123) is communicated with the supporting rotating shaft (15) in a signal connection mode.