A rotary type automatic steel bar welding equipment

Abstract

The present invention relates to a rotary automatic steel bar welding device, which comprises a frame, a rotary table assembly arranged on the frame and driven by an intermittent driver, a plurality of positioning grooves radially arranged on the top of the rotary table assembly, a plurality of feeding racks radially arranged in the rotary table assembly and respectively located directly below the plurality of positioning grooves, a plurality of groups of clamping mechanisms arranged on the top of the rotary table assembly and respectively located at the outer ends of the plurality of positioning grooves, and a welding robot for welding the overlapping joints of steel bars; each group of the clamping mechanisms includes clamping assemblies respectively arranged on both sides of the positioning groove; each clamping assembly includes a clamping cylinder horizontally placed with its driving end pointing to the positioning groove, two clamping pieces spaced apart on the driving end of the clamping cylinder and vertically placed with respect to the positioning groove, and a bayonet arranged at the head of the clamping piece for clamping the overlapping joint of the steel bar; the present invention can automatically weld steel bars, not only reducing the labor intensity, improving the work efficiency, but also ensuring the welding quality of the steel bars.

Description

Technical Field

[0001] The present invention relates to the field of steel bar processing, and particularly to a rotary steel bar automatic welding device. Background Art

[0002] At present, when manufacturing shield segments, the steel bar cage needs to be placed in the steel mold first, and then concrete is poured. However, in the process of manufacturing the existing steel bar cages, manual welding is used, which is not only time-consuming and laborious, with a large labor intensity and low work efficiency, but also the steel bars will be burned to varying degrees due to the insufficient control of the welding machine current by the welder, affecting the welding quality. Summary of the Invention

[0003] The purpose of the present invention is to provide a rotary steel bar automatic welding device to overcome the deficiencies of the prior art.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: a rotary steel bar automatic welding device, comprising a frame, a turntable assembly horizontally arranged on the frame and driven by an intermittent driver, a plurality of positioning grooves radially arranged on the top of the turntable assembly and evenly placed in a circle, a plurality of feeding racks radially arranged inside the turntable assembly and respectively located directly below the plurality of positioning grooves, a plurality of clamping mechanisms arranged on the top of the turntable assembly and respectively located at the outer ends of the plurality of positioning grooves, and a welding robot for welding the overlapping joints of the steel bars; each group of the clamping mechanisms includes clamping components respectively arranged on both sides of the positioning groove; each clamping component includes a clamping cylinder horizontally placed with its driving end pointing to the positioning groove, two clamping pieces spaced apart on the driving end of the clamping cylinder and vertically placed with respect to the positioning groove, and a bayonet arranged at the head of the clamping piece for clamping the overlapping joint of the steel bar; the clamping pieces of the two clamping components in the same group are staggered.

[0005] Preferably, the bayonet is semi-circular, and its diameter is equal to the diameter of the steel bar.

[0006] Preferably, a wedge-shaped guiding part connected to the bottom of the bayonet is arranged at the head of the clamping piece.

[0007] Preferably, at least two first positioning parts for positioning the bottom of the steel bar are arranged at intervals along the length direction of the positioning groove at the lower part of the feeding rack; at least one second positioning part for positioning the end of the steel bar is arranged at the outer end of the feeding rack; the cross-sections of the first positioning part and the second positioning part are both U-shaped.

[0008] Preferably, a first rotary clamping cylinder for fixing the bottom of the steel bar is arranged at the lower part of the feeding rack; a second rotary clamping cylinder for fixing the end of the steel bar is arranged at the outer end of the feeding rack.

[0009] Preferably, a pressing mechanism for making the end of the steel bar closely abut against the outer end of the blanking rack is arranged at the inner end of the blanking rack; the pressing mechanism includes two horizontally and parallel guide rods, a top plate slidably arranged on the two guide rods, springs respectively arranged on the two guide rods for driving the top plate to move towards the outer end of the blanking rack, and limit pins respectively arranged at the outer ends of the two guide rods to prevent the top plate from sliding out of the guide rods.

[0010] Preferably, the turntable assembly includes an upper turntable, a lower turntable arranged below the upper turntable and coaxially with the upper turntable, and a plurality of connecting columns vertically arranged between the upper turntable and the lower turntable; a plurality of the positioning grooves and a plurality of groups of the clamping mechanisms are all arranged on the upper turntable; the blanking rack is arranged between the upper turntable and the lower turntable, and the blanking rack is in an L shape and includes a horizontal part and a vertical part; the horizontal part is connected to the lower turntable; the upper end of the vertical part is connected to the upper turntable; the first positioning member and the first rotary clamping cylinder are arranged on the horizontal part; the second positioning member and the second rotary clamping cylinder are arranged on the vertical part.

[0011] Preferably, the center of the turntable assembly is located at the center of the frame.

[0012] Preferably, the intermittent driver is a cam divider.

[0013] Preferably, the welding robot includes a welding table, an XYZ servo module arranged on the welding table, and a welding torch arranged at the driving end of the XYZ servo module.

[0014] Due to the application of the above technical solutions, the present invention has the following advantages compared with the prior art:

[0015] 1. The present invention can automatically weld steel bars, which not only reduces the labor intensity, improves the work efficiency, but also can ensure the welding quality of the steel bars;

[0016] 2. The present invention adopts a turntable structure, which is convenient for workers to load and unload materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The technical solutions of the present invention will be further described below with reference to the drawings:

[0018] Attached Figure 1 is a schematic structural diagram of the rotary steel bar automatic welding equipment of the present invention;

[0019] Attached Figure 2 is Figure 1 the partial enlarged view at A in

[0020] Attached Figure 3 is a schematic structural diagram of the clamping piece in the present invention;

[0021] Attached Figure 4 is a schematic structural diagram of a single steel bar in the present invention;

[0022] Appended Figure 5 is a schematic structural view of the pressing mechanism in the present invention;

[0023] Appended Figure 6 is a schematic structural view of the steel bar welded in the present invention;

[0024] Appended Figure 7 is a schematic structural view of the welding robot in the present invention.

[0025] Wherein: 1, frame; 2, turntable assembly; 21, upper turntable; 22, lower turntable; 3, positioning groove; 4, material placing rack; 41, horizontal part; 42, vertical part; 5, clamping assembly; 51, clamping cylinder; 52, clamping piece; 53, bayonet; 54, wedge-shaped guiding part; 6, welding robot; 61, welding table; 62, XYZ servo module; 63, welding torch; 7, steel bar; 8, pressing mechanism; 81, guide rod; 82, top plate; 83, spring; 84, limit pin; 9, first positioning member; 10, first rotary clamping cylinder; 11, second positioning member; 12, second rotary clamping cylinder. Specific Embodiment

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] Appended Figures 1-7The turntable type automatic steel bar welding equipment of the present invention includes a frame 1, a turntable assembly 2 horizontally arranged on the frame 1 and driven by an intermittent driver, twelve positioning grooves 3 radially arranged on the top of the turntable assembly 2 and evenly placed in a circle, twelve feeding racks 4 radially arranged in the turntable assembly 2 and respectively located directly below the twelve positioning grooves 3, twelve groups of clamping mechanisms arranged on the top of the turntable assembly 2 and respectively located at the outer ends of the twelve positioning grooves 3, and a welding robot 6 for welding the overlapping joints of the steel bars 7; each group of the clamping mechanisms includes clamping components 5 respectively arranged on both sides of the positioning groove 3; each clamping component 5 includes a clamping cylinder 51 horizontally placed with its driving end pointing to the positioning groove 3, two clamping pieces 52 spaced apart on the driving end of the clamping cylinder 51 and vertically placed with respect to the positioning groove 3, and a clamping opening 53 arranged at the head of the clamping piece 52 for clamping the overlapping joint of the steel bar 7; the clamping pieces 52 of the two clamping components 5 in the same group are staggeredly placed; during operation: manually place the steel bars 7 to be welded into the positioning grooves 3 one by one, make the bottom of the steel bar 7 to be welded fall on the lower part of the feeding rack 4, and the end lean against the outer end of the feeding rack 4, then clamp the overlapping joint of the steel bar 7 through the clamping mechanism, then drive the turntable assembly 2 through the intermittent driver to drive the steel bars 7 to be welded to move to the welding station one by one, then perform automatic welding through the welding robot 6, and finally manually remove the welded steel bars 7, and work in a cycle in turn; the specific clamping process of the clamping mechanism is as follows: the clamping cylinders 51 of the two clamping components 5 extend simultaneously, and clamp the overlapping joint of the steel bar 7 through the clamping openings 53 on the clamping pieces 52, so as to achieve clamping.

[0028] Further, the clamping opening 53 is semicircular, and its diameter is equal to the diameter of the steel bar 7; during operation: since the clamping opening 53 is semicircular, it can just clamp the steel bar 7, and at the same time expose the welding part, which is convenient for the welding robot 6 to perform automatic welding.

[0029] Further, a wedge-shaped guiding part 54 connected to the bottom of the clamping opening 53 is arranged at the head of the clamping piece 52; when the clamping mechanism clamps the overlapping joint of the steel bar 7: the wedge-shaped guiding part 54 can play a guiding role, so that the steel bar 7 accurately falls into the clamping opening 53, improving the accuracy.

[0030] Further, two first positioning parts 9 for positioning the bottom of the steel bar 7 are arranged at the lower part of the feeding rack 4 at intervals along the length direction of the positioning groove 3; a second positioning part 11 for positioning the end of the steel bar 7 is arranged at the outer end of the feeding rack 4; the cross-sections of the first positioning part 9 and the second positioning part 11 are both U-shaped; during operation: the bottom of the steel bar 7 can be positioned through the first positioning part 9, and the end of the steel bar 7 can be positioned through the second positioning part 11, playing a positioning role and facilitating the clamping mechanism to clamp the overlapping joint of the steel bar 7.

[0031] Further, a first rotary clamping cylinder 10 for fixing the bottom of the steel bar 7 is provided at the lower part of the material rack 4; a second rotary clamping cylinder 12 for fixing the end of the steel bar 7 is provided at the outer end of the material rack 4; during operation: the bottom of the steel bar 7 can be fixed by the first rotary clamping cylinder 10, and the end of the steel bar 7 can be fixed by the second rotary clamping cylinder 12, preventing the steel bar 7 from shifting when the placing turntable assembly 2 rotates and affecting the welding accuracy.

[0032] Further, a pressing mechanism 8 for making the end of the steel bar 7 closely abut against the outer end of the material rack 4 is provided at the inner end of the material rack 4; the pressing mechanism 8 includes two horizontally and parallel guide rods 81, a top plate 82 slidably arranged on the two guide rods 81, springs 83 respectively arranged on the two guide rods 81 for driving the top plate 82 to move towards the outer end of the material rack 4, and limit pins 84 respectively arranged at the outer ends of the two guide rods 81 to prevent the top plate 82 from sliding out of the guide rods 81; during operation: the steel bar 7 is placed between the two guide rods 81, and the two guide rods 81 can play a positioning role. Then, the top plate 82 presses the steel bar 7 towards the outer end of the material rack 4 under the elastic force of the springs 83, making the end of the steel bar 7 closely abut against the outer end of the material rack 4, so as to adapt to the welding of steel bars 7 of different lengths.

[0033] Further, the turntable assembly 2 includes an upper turntable 21, a lower turntable 22 arranged below the upper turntable 21 and coaxially with the upper turntable 21, and twelve connecting columns vertically arranged between the upper turntable 21 and the lower turntable 22; the twelve positioning grooves 3 and the twelve groups of clamping mechanisms are all arranged on the upper turntable 21; the material rack 4 is arranged between the upper turntable 21 and the lower turntable 22, and the material rack 4 is L-shaped, including a horizontal part 41 and a vertical part 42; the horizontal part 41 is connected to the lower turntable 22; the upper end of the vertical part 42 is connected to the upper turntable 21; the first positioning member 9 and the first rotary clamping cylinder 10 are arranged on the horizontal part 41; the second positioning member 11 and the second rotary clamping cylinder 12 are arranged on the vertical part 42; adopting this structure can make the overall structure more firm.

[0034] Further, the center of the turntable assembly 2 is located at the center of the frame 1; adopting this structure can make the center of gravity of the equipment more stable and the operation more stable during work.

[0035] Further, the intermittent driver is a cam divider, which has the advantages of compact structure, low noise, high indexing accuracy, etc.

[0036] Further, the welding robot 6 includes a welding table 61, an XYZ servo module 62 arranged on the welding table 61, and a welding torch 63 arranged at the driving end of the XYZ servo module 62; during operation: the welding torch 63 is driven by the XYZ servo module 62 to perform welding work.

[0037] The above are only specific application examples of the present invention and do not constitute any limitation to the protection scope of the present invention. Any technical solutions formed by equivalent transformation or equivalent substitution fall within the scope of the present invention's protection rights.

Claims

1. A rotary automatic steel bar welding device, characterized in that: it includes a frame, a rotary table assembly horizontally arranged on the frame and driven by an intermittent driver, a plurality of positioning grooves radially arranged on the top of the rotary table assembly and evenly placed circumferentially, a plurality of feeding racks radially arranged in the rotary table assembly and respectively located directly below the plurality of positioning grooves, a plurality of clamping mechanisms arranged on the top of the rotary table assembly and respectively located at the outer ends of the plurality of positioning grooves, and a welding robot for welding the overlapping joints of steel bars; Each of the clamping mechanisms includes clamping components respectively arranged on both sides of the positioning groove; each clamping component includes a clamping cylinder horizontally placed with its driving end pointing to the positioning groove, two clamping pieces spaced apart on the driving end of the clamping cylinder and vertically placed with respect to the positioning groove, and a bayonet arranged at the head of the clamping piece for clamping the overlapping joint of the steel bar; the clamping pieces of the two clamping components in the same group are staggeredly placed; At least two first positioning pieces for positioning the bottom of the steel bar are arranged at intervals along the length direction of the positioning groove at the lower part of the feeding rack; at least one second positioning piece for positioning the end of the steel bar is arranged at the outer end of the feeding rack; the cross-sections of the first positioning piece and the second positioning piece are both U-shaped; A first rotary clamping cylinder for fixing the bottom of the steel bar is arranged at the lower part of the feeding rack; a second rotary clamping cylinder for fixing the end of the steel bar is arranged at the outer end of the feeding rack; A pressing mechanism for making the end of the steel bar closely abut against the outer end of the feeding rack is arranged at the inner end of the feeding rack; the pressing mechanism includes two horizontally and parallelly placed guide rods, a top plate slidably arranged on the two guide rods, springs respectively arranged on the two guide rods for driving the top plate to move towards the outer end of the feeding rack, and limit pins respectively arranged at the outer ends of the two guide rods to prevent the top plate from sliding out of the guide rods.

2. The rotary automatic steel bar welding device according to claim 1, characterized in that: the bayonet is semi-circular, and its diameter is equal to the diameter of the steel bar.

3. The rotary automatic steel bar welding device according to claim 2, characterized in that: a wedge-shaped guiding part connected to the bottom of the bayonet is arranged at the head of the clamping piece.

4. The rotary automatic steel bar welding device according to any one of claims 1-3, characterized in that: the rotary table assembly includes an upper rotary table, a lower rotary table arranged below the upper rotary table and coaxially with the upper rotary table, and a plurality of connecting columns vertically arranged between the upper rotary table and the lower rotary table; the plurality of positioning grooves and the plurality of clamping mechanisms are all arranged on the upper rotary table; the feeding rack is arranged between the upper rotary table and the lower rotary table, the feeding rack is L-shaped, including a horizontal part and a vertical part; the horizontal part is connected to the lower rotary table; the upper end of the vertical part is connected to the upper rotary table; the first positioning piece and the first rotary clamping cylinder are arranged on the horizontal part; the second positioning piece and the second rotary clamping cylinder are arranged on the vertical part.

5. The rotary automatic steel bar welding device according to claim 4, characterized in that: the center of the rotary table assembly is located at the center of the frame.

6. The rotary automatic steel bar welding device according to claim 5, characterized in that: the intermittent driver is a cam divider.

7. The rotary automatic steel bar welding device according to claim 6, characterized in that: The welding robot includes a welding table, an XYZ servo module disposed on the welding table, and a welding torch disposed at the driving end of the XYZ servo module.

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