Automatic welding device for street light pole and base flange

Abstract

The present invention discloses an automatic welding device for a street light pole and a base flange in the field of welding devices, comprising a clamping mechanism for fixing the base flange, a rod support mechanism is provided on the side opposite to the clamping mechanism, the rod support mechanism comprises at least one pair of movable brackets for horizontally supporting the street light pole, the movable bracket sends one end of the street light pole to the central hole of the base flange, a tube expansion mechanism is provided on the side opposite to one end of the street light pole, the tube expansion mechanism expands the opening of one end of the street light pole, an end tightening plate movable along the axial direction of the street light pole is provided at a position corresponding to the other end of the street light pole, and a welding robot is provided at a position corresponding to the base flange. The present invention can clamp and fix the base flange, ensure that there is no relative displacement between the street light pole and the base flange, automatically complete welding, have high welding precision, and save time and effort.

Description

Technical Field

[0001] The invention belongs to the field of welding devices, and in particular relates to an automatic welding device for a street light pole and a base flange. Background Art

[0002] A street light pole is a pole for installing street lights. The bottom of the street light pole is connected to a base flange. The base flange can be fixed to the ground through embedded parts to achieve fixed installation of the street light. When mass-producing street light poles, since the street light pole and the base flange are two separate components, the street light pole and the base flange need to be welded and fixed. In the prior art, manual welding is usually used to fix the street light pole and the base flange. The disadvantages are: the street light pole is long and difficult to fix, which increases the difficulty of manual welding; there is a lack of tooling for positioning the street light pole and the base flange, and relative movement between the base flange and the street light pole is easy to occur, affecting the welding accuracy; manual welding is time-consuming and labor-intensive, and the welding efficiency is low. Summary of the invention

[0003] The purpose of the present invention is to provide an automatic welding device for a street light pole and a base flange, which can clamp and fix the base flange to ensure that no relative displacement occurs between the street light pole and the base flange, automatically complete the welding, have high welding accuracy, and save time and effort.

[0004] The objective of the present invention is achieved as follows: an automatic welding device for a street light pole and a base flange comprises a clamping mechanism for fixing the base flange, a rod supporting mechanism is provided on the side opposite to the clamping mechanism, the rod supporting mechanism comprises at least one pair of movable brackets for horizontally supporting the street light pole, the movable brackets send one end of the street light pole to the center hole of the base flange, an expansion mechanism is provided on the side opposite to one end of the street light pole, the expansion mechanism expands the opening of one end of the street light pole, an end tightening plate movable along the axial direction of the street light pole is provided at a position corresponding to the other end of the street light pole, and a welding robot is provided at a position corresponding to the base flange.

[0005] When the present invention is working, the base flange is fixed on the clamping mechanism, the street light pole is horizontally supported on two movable brackets, the movable bracket moves one end of the street light pole to be welded to the center hole of the base flange, the expansion mechanism expands the opening at one end of the lamp pole, the end tightening plate tightens the other end of the street light pole, and the welding robot welds and fixes the base flange and the street light pole; the street light pole is fixed, and no relative displacement occurs between the street light pole and the base flange, thereby improving the welding accuracy; after the opening at one end of the street light pole is enlarged, the gap between the outer wall of the street light pole and the center hole of the base flange is eliminated, so that the weld between the base flange and the street light pole is uniform, and the welding is more firm and reliable. Compared with the prior art, the beneficial effects of the present invention are as follows: the expansion tube mechanism is used to apply tension to expand the opening at one end of the street light pole, and the end tightening plate is used to fix the two ends of the street light pole, thereby limiting the axial movement of the street light pole. The lower side of the street light pole is supported on a movable bracket to achieve the positioning of the street light pole. The street light pole and the base flange will not produce relative displacement, and the welding accuracy is higher; the end of the street light pole to be welded is automatically transferred to the center hole of the base flange, and the welding robot automatically welds the street light pole and the base flange, which has a high degree of automation, saves time and effort, and improves welding efficiency.

[0006] As a further improvement of the present invention, the clamping mechanism includes a clamping frame, and four support plates are arranged on the clamping frame, two support plates are symmetrically distributed up and down, and two support plates are symmetrically distributed left and right, and two support surfaces are symmetrically arranged at the end of each support plate, and the support surface is at an angle of 45° with the horizontal plane, and the support surfaces of each support plate are arranged corresponding to each other, and clamping cylinders are obliquely arranged between adjacent support plates on the clamping frame, and a bottom support block is correspondingly arranged at the bottom of the base flange. The base flange is supported on the bottom support block at an inclination of 45°, and the support surface of the support plate limits the two sides of the base flange, and the extended ends of the piston rods of the four clamping cylinders press the four sides of the base flange, so that the base flange is clamped and fixed.

[0007] As a further improvement of the present invention, the movable bracket is connected to the support frame via a guide rail slider, and at least one pair of supporting wheels is provided on the movable bracket, and the two supporting wheels are respectively connected to the positive thread lead screw nut and the negative thread lead screw nut, and the positive thread lead screw nut and the negative thread lead screw nut are both mounted on the lead screw, and the lead screw is perpendicular to the axis of the street light pole, and an adjustment hand wheel is provided at the end of the lead screw, and a locking bolt is provided on the movable bracket. The street light pole is horizontally supported on the supporting wheel pair of the movable bracket, and the adjusting hand wheel is turned, the lead screw rotates, and the positive thread lead screw nut and the negative thread lead screw nut move toward or in the opposite direction, and the distance between the two supporting wheels is automatically adjusted to adapt to the outer diameter of the street light pole, and the movable bracket moves along the guide rail to send the street light pole to the center hole of the base flange; the locking bolt can lock and fix the movable bracket to prevent the street light pole from moving during the welding process and affecting the welding accuracy.

[0008] As a further improvement of the present invention, the end tightening plate is arranged on the end moving seat, the end moving seat is connected to the supporting frame via the guide rail slider, the end moving seat is provided with a locking bolt, the end moving seat is provided with an adjusting screw, the end tightening plate is arranged at one end of the adjusting screw, and the other end of the adjusting screw is provided with an adjusting hand wheel. When the adjusting screw is turned, the end tightening plate tightens the other end of the street light pole by the meshing between the threads.

[0009] As a further improvement of the present invention, the tube expansion mechanism includes a tube expansion machine base, a movable base is connected to the tube expansion machine base via a guide rail slider, the movable base is hinged to the working end of the oil cylinder, a center guide sleeve is horizontally provided on the movable base, an expansion cone is provided at one end of the center guide sleeve close to the base flange, the expansion cone coincides with the axis of the street light pole, the expansion cone includes a center disk, a plurality of swing support plates are arranged at intervals along the circumference of the center disk, adjacent swing support plates are connected by tension springs, an axially movable push head is provided on the center guide sleeve, and the push head is transmission-connected to the transverse driving mechanism. The transverse driving mechanism drives the push head to move along the center guide sleeve, the push head pushes the swing support plate outward, the swing support plate opens, the circumferential diameter of the tube expansion cone in contact with the opening at one end of the street light pole increases, the street light pole opening is enlarged, and the tube expansion is achieved.

[0010] As a further improvement of the present invention, the push head includes an inner core and an outer ring, the outer ring is sleeved on the outer periphery of the central guide sleeve, the inner core is axially arranged inside the central guide sleeve, the inner core and the outer ring are connected via a plurality of connecting parts radially passing through the side wall of the central guide sleeve, and a wall groove is provided on the side wall of the central guide sleeve corresponding to each connecting part. The inner core moves axially in the central guide sleeve, the outer ring pushes the swing support plate outward, the swing support plate always presses the push head, and each swing support plate applies a uniformly distributed stable tension to the opening of the street light pole.

[0011] As a further improvement of the present invention, the moving seat is provided with a support seat, a driving shaft is slidably supported on the support seat via a needle bearing, a central guide sleeve is fixedly connected to the support seat, the driving shaft extends into the central guide sleeve, the driving head is arranged at the end of the driving shaft, and the transverse driving mechanism is connected to the driving shaft in a transmission manner. The central guide sleeve guides the driving shaft, the support seat supports the driving shaft, and the driving shaft moves axially in the central guide sleeve, so that the driving shaft moves more smoothly.

[0012] As a further improvement of the present invention, the central guide sleeve comprises a first sleeve body and a second sleeve body respectively arranged on both sides of the support seat. The central guide sleeve arranged separately has a guiding effect when the axial support seat is pushed to move on both sides, the guiding effect is better, and the movement of the driving shaft is more stable.

[0013] As a further improvement of the present invention, the transverse driving mechanism includes a second lead screw connected to the driving shaft as a whole, the second lead screw is coaxially arranged with the driving shaft, a lead screw nut is sleeved on the second lead screw, and thrust bearings are arranged at both the left and right ends of the lead screw nut. When the lead screw nut rotates, the second lead screw moves axially, driving the driving shaft to move, and the travel of the lead screw drive is more precise, realizing precise control of the movement of the driving head, and the tension of the expansion cone can be precisely adjusted.

[0014] As a further improvement of the present invention, a driven gear is coaxially arranged on the lead screw nut, the driven gear and the lead screw nut are integrally arranged, the driven gear is meshed with the driving gear, the driving gear is arranged at the output end of the reducer, the reducer is connected to the motor by transmission, the mobile seat is provided with a reducer seat, and the reducer seat is provided with a through hole that allows the lead screw to pass axially. After the motor is decelerated by the reducer, it drives the driving gear to rotate, the driving gear drives the driven gear to rotate, and the lead screw nut is rotated. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention.

[0016] Figure 2 Schematic diagram of the rod support mechanism.

[0017] Figure 3 It is a structural schematic diagram of the end movable seat.

[0018] Figure 4 It is a structural schematic diagram of the mobile bracket.

[0019] Figure 5 for Figure 3 main view.

[0020] Figure 6 for Figure 4 main view.

[0021] Figure 7 It is a structural schematic diagram of the clamping mechanism.

[0022] Figure 8 for Figure 7 A partial enlarged view of .

[0023] Fig. 9 for Figure 7 Top view of the .

[0024] Fig.10 It is a structural schematic diagram of the clamping mechanism clamping the base flange.

[0025] Fig.11 It is a top view of the expansion mechanism.

[0026] Fig.12 It is the front view of the expansion mechanism.

[0027] Fig.13 This is the working principle diagram of the tube expansion mechanism.

[0028] Fig.14 for Fig.13 A partial enlarged view of .

[0029] Fig.15 for Fig.13 A partial enlarged view of .

[0030] Fig.16 It is a structural schematic diagram of the center guide sleeve.

[0031] Fig.17 It is a schematic diagram of the structure of the driving shaft.

[0032] Fig.18 for Fig.13 AA section view.

[0033] Fig.19 for Fig.13 BB section view.

[0034] Fig. 20 It is a schematic diagram of the structure of the push head.

[0035] Fig.21 for Fig.13 CC section view.

[0036] Fig. 22 for Fig.13 DD section view.

[0037] Among them, 1 moving support seat, 2 end clamping plate, 3 welding robot, 4 clamping frame, 5 support plate, 6 clamping cylinder, 7 bottom support block, 8 guide slider, 9 support frame, 10 support wheel, 11 screw, 12 screw two, 13 adjusting hand wheel, 14 locking bolt, 15 end moving seat, 16 adjusting screw, 17 expansion machine seat, 18 moving seat, 19 cylinder, 20 center guide sleeve, 2001 first sleeve body, 2002 second sleeve body, 21 expansion cone, 2101 center plate, 2102 swing support plate, 22 tension spring, 23 push head, 2301 inner core part, 2302 outer ring part, 2303 connecting part, 24 wall groove, 25 support seat, 26 needle bearing, 27 push shaft, 28 screw nut, 29 thrust bearing, 30 driven gear, 31 driving gear, 32 reducer, 32a reducer seat, 33 motor, 34 base flange. DETAILED DESCRIPTION

[0038] like Figure 1-22As shown, it is an automatic welding device for a street light pole and a base flange, including a clamping mechanism for fixing a base flange 34, the clamping mechanism includes a clamping frame 4, and four support plates 5 are arranged on the clamping frame 4, two support plates 5 are symmetrically distributed up and down, and two support plates 5 are symmetrically distributed left and right, and each support plate 5 has two support surfaces symmetrically arranged at the end, and the support surface forms an angle of 45° with the horizontal plane, and the support surfaces of each support plate 5 are arranged corresponding to each other, and a clamping cylinder 6 is inclined between adjacent support plates 5 on the clamping frame 4, and the bottom of the base flange 34 A bottom support block 7 is provided correspondingly; a rod support mechanism is provided on the side opposite to the clamping mechanism, and the rod support mechanism includes at least one pair of movable brackets 1 for horizontally supporting the street light pole, and the movable bracket 1 sends one end of the street light pole to the central hole of the base flange 34, and a tube expansion mechanism is provided on the side opposite to one end of the street light pole, and the tube expansion mechanism expands the opening of one end of the street light pole, and an end tightening plate 2 that can move along the axial direction of the street light pole is provided at a position corresponding to the other end of the street light pole, and a welding robot 3 is provided at a position corresponding to the base flange 34.

[0039] The movable bracket 1 is connected to the supporting frame 9 via the guide rail slider 8. At least one pair of supporting wheels 10 is provided on the movable bracket 1. The two supporting wheels 10 are respectively connected to the positive thread lead screw nut and the negative thread lead screw nut. The positive thread lead screw nut and the negative thread lead screw nut are both mounted on the lead screw 11. The lead screw 11 is perpendicular to the axis of the street light pole. An adjusting hand wheel 13 is provided at the end of the lead screw 11. A locking bolt 14 is provided on the movable bracket 1.

[0040] The end tightening plate 2 is arranged on the end moving seat 15, and the end moving seat 15 is connected to the supporting frame 9 via a guide rail slider. A locking bolt 14 is provided on the end moving seat 15, and an adjusting screw 16 is provided on the end moving seat 15. The end tightening plate 2 is arranged at one end of the adjusting screw 16, and an adjusting hand wheel 13 is provided at the other end of the adjusting screw 16.

[0041] The tube expansion mechanism includes a tube expansion machine base 17, and a movable base 18 is connected to the tube expansion machine base 17 via a guide rail slider. The movable base 18 is hinged to the working end of the oil cylinder 19, and a center guide sleeve 20 is horizontally provided on the movable base 18. An expansion cone 21 is provided at one end of the center guide sleeve 20 close to the base flange 34. The expansion cone 21 coincides with the axis of the street light pole. The expansion cone 21 includes a center disk 2101, and a plurality of swing support plates 2102 are circumferentially spaced on the center disk 2101. Adjacent swing support plates 2102 are connected by tension springs 22. An axially movable push head 23 is provided on the center guide sleeve 20, and the push head 23 is transmission-connected to the transverse driving mechanism. The pushing head 23 includes an inner core portion 2301 and an outer ring portion 2302. The outer ring portion 2302 is sleeved on the outer periphery of the center guide sleeve 20. The inner core portion 2301 is axially arranged inside the center guide sleeve 20. The inner core portion 2301 and the outer ring portion 2302 are connected via a plurality of connecting portions 2303 radially passing through the side wall of the center guide sleeve 20. Wall grooves 24 are provided on the side wall of the center guide sleeve 20 corresponding to each connecting portion 2303.

[0042] The moving seat 18 is provided with a support seat 25, on which a driving shaft 27 is slidably supported via a needle bearing 26, a central guide sleeve 20 is fixedly connected to the support seat 25, and the central guide sleeve 20 comprises a first sleeve body 2001 and a second sleeve body 2002 respectively arranged on both sides of the support seat 25; the driving shaft 27 extends into the central guide sleeve 20 correspondingly, a driving head 23 is arranged at the end of the driving shaft 27, and the transverse driving mechanism is in transmission connection with the driving shaft 27. The transverse driving mechanism comprises a lead screw 12 connected as a whole with the driving shaft 27, the lead screw 12 is coaxially arranged with the driving shaft 27, a lead screw nut 28 is sleeved on the lead screw 12, and thrust bearings 29 are arranged at both left and right ends of the lead screw nut 28. A driven gear 30 is concentrically arranged on the lead screw nut 28. The driven gear 30 is integrally arranged with the lead screw nut 28. The driven gear 30 is meshed with a driving gear 31. The driving gear 31 is arranged at the output end of a reducer 32. The reducer 32 is transmission-connected to a motor 33. A reducer seat 32a is arranged on the movable seat 18. A through hole is arranged on the reducer seat 32a for allowing the lead screw 12 to pass axially.

[0043] When the device is working, the base flange 34 is fixed between the support plates 5, the bottom of the base flange 34 is supported on the bottom support block 7, and the clamping cylinder 6 clamps the base flange 34; the street light pole is horizontally supported on the two movable brackets 1, and the movable bracket 1 moves the end of the street light pole to be welded to the center hole of the base flange 34, the screw nut 28 rotates, driving the screw 12 to move axially, and the driving shaft 27 drives the driving head 23 to move along the center guide sleeve 20, and the driving head 23 pushes the swing support plate 2102 outward, and the swing support plate 2102 opens, and the tube expands. The circumferential diameter of the cone 21 in contact with the opening at one end of the street light pole increases, and the opening of the street light pole is enlarged to achieve tube expansion; the adjusting hand wheel 13 is turned, and the end tightening plate 2 tightens the other end of the street light pole, and the welding robot 3 welds and fixes the base flange 34 and the street light pole; the street light pole is fixed, and there is no relative displacement between the street light pole and the base flange, which improves the welding accuracy; after the opening at one end of the street light pole is enlarged, the gap between the outer wall of the street light pole and the center hole of the base flange is eliminated, so that the weld between the base flange and the street light pole is uniform, and the welding is more firm and reliable. The advantages of this device are: the expansion tube mechanism is used to expand the opening at one end of the street light pole to apply tension, and the end tightening plate is used to fix the two ends of the street light pole, thereby limiting the axial movement of the street light pole. The lower side of the street light pole is supported on the movable bracket 1 to achieve the positioning of the street light pole. The street light pole and the base flange will not produce relative displacement, and the welding accuracy is higher; the end of the street light pole to be welded is automatically transferred to the center hole of the base flange, and the welding robot automatically welds the street light pole and the base flange, which has a high degree of automation, saves time and effort, and improves welding efficiency.

[0044] The present invention is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present invention, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present invention.

Claims

1. An automatic welding device for a street light pole and a base flange, characterized in that: It includes a clamping mechanism for fixing the base flange, a rod supporting mechanism is provided on the side opposite to the clamping mechanism, the rod supporting mechanism includes at least one pair of movable brackets for horizontally supporting the street light pole, the movable bracket sends one end of the street light pole to the central hole of the base flange, an expansion mechanism is provided on the side opposite to one end of the street light pole, the expansion mechanism expands the opening of one end of the street light pole, an end tightening plate movable along the axial direction of the street light pole is provided at a position corresponding to the other end of the street light pole, and a welding robot is provided at a position corresponding to the base flange; the clamping mechanism includes a clamping frame, four supporting plates are provided on the clamping frame, two supporting plates are symmetrically distributed up and down, two supporting plates are symmetrically distributed left and right, and two supporting surfaces are symmetrically provided at the end of each supporting plate. The supporting surface is at an angle of 45° to the horizontal plane, and the supporting surfaces of each supporting plate are arranged corresponding to each other. A clamping cylinder is obliquely provided between adjacent supporting plates on the clamping frame, and a bottom supporting block is correspondingly provided at the bottom of the base flange; the movable bracket is connected to the supporting frame via a guide rail slider, and at least one pair of supporting wheels is provided on the movable bracket, and the two supporting wheels are respectively connected to the positive thread lead screw nut and the negative thread lead screw nut, and the positive thread lead screw nut and the negative thread lead screw nut are both mounted on the lead screw, which is perpendicular to the axis of the street light pole, and an adjusting handwheel is provided at the end of the lead screw, and a locking bolt is provided on the movable bracket; the end tightening plate is arranged on the end movable seat, and the end movable seat is connected to the supporting frame via a guide rail slider, and a locking bolt is provided on the end movable seat, and an adjusting The screw rod has an end tightening plate arranged at one end of the adjusting screw rod, and an adjusting hand wheel is arranged at the other end of the adjusting screw rod; the tube expansion mechanism comprises a tube expansion machine base, a movable base is connected to the tube expansion machine base via a guide rail slider, the movable base is hinged to the working end of the oil cylinder, a center guide sleeve is horizontally arranged on the movable base, an expansion cone is arranged at one end of the center guide sleeve close to the base flange, the expansion cone coincides with the axis of the street light pole, the expansion cone comprises a center disk, a plurality of swing support plates are arranged at intervals along the circumferential direction on the center disk, adjacent swing support plates are connected by tension springs, an axially movable push head is arranged on the center guide sleeve, and the push head is transmission-connected to the transverse driving mechanism; the push head comprises an inner core portion and an outer ring portion, the outer ring portion is sleeved on the outer periphery of the center guide sleeve, and the inner core portion is axially arranged Inside the center guide sleeve, the inner core part and the outer ring part are connected via a plurality of connecting parts that radially pass through the side wall of the center guide sleeve, and a wall groove is provided on the side wall of the center guide sleeve corresponding to each connecting part; the movable seat is provided with a support seat, and a driving shaft is slidably supported on the support seat via a needle bearing, the center guide sleeve is fixedly connected to the support seat, and the driving shaft extends into the center guide sleeve correspondingly, the driving head is arranged at the end of the driving shaft, and the transverse driving mechanism is connected to the driving shaft in a transmission manner; the center guide sleeve comprises a first sleeve body and a second sleeve body respectively arranged on both sides of the support seat; the transverse driving mechanism comprises a lead screw 2 that is connected to the driving shaft as a whole, the lead screw 2 is coaxially arranged with the driving shaft, a lead screw nut is sleeved on the lead screw 2, and thrust bearings are arranged at both ends of the lead screw nut;The screw nut is concentrically provided with a driven gear, which is integrally provided with the screw nut, meshed with the driving gear, which is provided at the output end of the reducer, which is transmission-connected with the motor, and the movable seat is provided with a reducer seat, which is provided with a through hole for the screw to pass axially. ;

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