CN210997011U - Composite stirrup welding machine structure - Google Patents

Abstract

The utility model relates to a composite stirrup welding machine structure, which comprises two pairs of welding machines, wherein a butt welding machine comprises a main body, one side of the main body is convexly provided with a welding chuck, the welding chuck comprises an upper connecting frame and a lower connecting frame which are vertically arranged at intervals, and the upper connecting frame and the lower connecting frame are respectively provided with an upper chuck and a lower chuck; the welding chucks of the two pairs of welding machines are oppositely arranged, and the two pairs of welding machines can be arranged on the two parallel transverse guide rails in a sliding way so as to adjust the distance; a feeding mechanism is arranged on a lower connecting frame of the butt welding machine; the feeding mechanism comprises a longitudinal guide rail and clamping units which are slidably arranged on the longitudinal guide rail, the longitudinal guide rail is perpendicular to the transverse guide rail and is fixedly connected with the free end of the lower connecting frame, and the two clamping units are positioned between the two lower chucks so as to clamp the transverse ribs of the stirrups and combine the sliding on the longitudinal guide rail to sequentially realize the actions of sliding feeding, sliding stop matching welding and sliding discharging. The utility model relates to a weld the main part, can improve machining efficiency, avoid the inside reinforcing bar of compound stirrup to rely on the problem of artifical assembly welding completely.

Description

Composite stirrup welding machine structure

Technical Field

The utility model belongs to the technical field of the processing or the processing of wire rod, concretely relates to compound stirrup welding machine structure.

Background

The composite stirrup is usually a structural form that a plurality of longitudinal or/and transverse steel bars are additionally arranged in a square stirrup (hoop); the stirrups can be prefabricated, and then directly connect with component owner muscle through modes such as ligature or welding in the work progress in order to shorten construction cycle.

At present, regarding the prefabrication of ordinary hoop, welding after can manual bending, also there are a lot of automatic hoop bending equipment, can satisfy prefabricated hoop's demand, for example: CN108057821A, CN207464065U and CN 207431146U; however, if the construction needs a composite stirrup with steel bars connected in the hoop, the steel bars in the hoop are basically assembled and welded manually, that is, the prefabricated hoop and the steel bars to be added in the hoop are manually placed or connected according to the designed positions, and then welded to form the composite stirrup. Such manufacturing processes are inefficient and it is still desirable to consider automated production by mechanical equipment in an effort to improve efficiency and quality. The automatic mechanical equipment usually comprises a plurality of required feeding units, discharging units and welding main bodies, and needs to be designed in a one-to-one implementation structure.

Disclosure of Invention

The above is not enough to prior art, the to-be-solved technical problem of the utility model is to provide a compound stirrup welding machine structure, avoid the inside reinforcing bar of compound stirrup to rely on the problem of artifical assembly welding completely, as executing the welding main part, can improve machining efficiency or combine other of upper and lower process to send, ejection of compact unit realizes automated production better.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the composite stirrup welding machine structure comprises two butt welding machines, each butt welding machine comprises a main body, a welding chuck is arranged on one side of each main body in a protruding mode, each welding chuck comprises an upper connecting frame and a lower connecting frame which are vertically arranged at intervals, an upper chuck is arranged on each upper connecting frame, and a lower chuck is arranged on each lower connecting frame; the welding chucks of the two pairs of welding machines are oppositely arranged so as to weld two sides of the stirrups at the same time, and the two pairs of welding machines can be arranged on two parallel transverse guide rails in a sliding way so as to adjust the space, so that the two pairs of welding machines are suitable for processing stirrups with different widths; a feeding mechanism is arranged on a lower connecting frame of the butt welding machine; the feeding mechanism comprises a longitudinal guide rail and clamping units arranged on the longitudinal guide rail in a sliding manner, the longitudinal guide rail is perpendicular to a transverse guide rail and is fixedly connected with the free end of the lower connecting frame, and the two clamping units are positioned between the two lower chucks so as to clamp transverse ribs of stirrups and combine the sliding on the longitudinal guide rail to sequentially realize the actions of sliding feeding, sliding stop matching welding and sliding discharging.

Further perfecting the technical scheme, the longitudinal guide rail is fixedly connected with the lower connecting frame through a substrate, and the substrate is also provided with a driving unit and drives the clamping unit to slide along the longitudinal guide rail in a lead screw transmission mode; the clamping unit comprises a nut seat in transmission connection with a screw of the driving unit, one side, far away from the lower connecting frame, of the nut seat is connected with a structural plate, one end of the structural plate is connected with a main clamping arm extending along the length direction of the longitudinal guide rail, one end of the main clamping arm is hinged to the upper portion of one end of the structural plate, the free end of the main clamping arm is bent upwards to form a main claw, a first telescopic cylinder is arranged between the lower portion of one end of the structural plate and the free end of the main clamping arm to drive the main clamping arm to rotate along the hinged end of the main clamping arm so as to adjust the height of the main claw, the free end of the main clamping arm is hinged to an auxiliary claw matched with the main claw to form a clamping opening, and a second telescopic cylinder for driving the auxiliary claw to rotate is arranged on the main clamping arm.

Furthermore, a first hinge seat is convexly arranged on the lower surface of the free end of the main clamping arm, and two ends of the first telescopic cylinder are respectively hinged with the structural plate and the lower end of the first hinge seat; on the length direction of the transverse guide rail, the main claw corresponds to the thickness of the auxiliary claw, the thickness of the main claw and the thickness of the auxiliary claw which are overlapped correspond to the main clamping arm, a second hinging seat is arranged on the lower surface of the hinging end of the main clamping arm in a protruding mode, a second telescopic cylinder is hinged to the second hinging seat, a piston rod of the second telescopic cylinder penetrates through the first hinging seat and is hinged to the lower end of the auxiliary claw, the middle of the auxiliary claw is hinged to the main claw, and the upper end of the auxiliary claw is matched with the upper end of the main claw to form the clamping opening.

Furthermore, the screw of the driving unit is arranged above the longitudinal guide rails in parallel, and two ends of the screw are respectively connected with the connecting seat and the motor which are arranged on the substrate; the lower end of the nut seat is connected with the longitudinal guide rail through a guide rail groove matched with the longitudinal guide rail.

Furthermore, the two transverse guide rails are laid on the section steel frame, the butt welding machine is erected on the transverse guide rails through the flat trolley to improve flexibility, a driving screw is arranged in the section steel frame below the flat trolley and consists of two external thread sections with opposite rotation directions, the two flat trolleys are respectively connected with the driving screw through driving seats corresponding to the two external thread sections with opposite rotation directions, the driving seats are connected to the lower surface of the flat trolley in a protruding mode, two ends of the driving screw are respectively connected to the rotating seats in a rotatable mode, the rotating seats are fixedly connected into the section steel frame, and any end of the driving screw is connected with a driving motor.

Furthermore, the middle part of the driving screw rod can rotatably penetrate through the supporting seat fixedly connected in the section steel frame so as to ensure the rigidity of the driving screw rod.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses a compound stirrup welding machine structure, two can weld the both sides of stirrup simultaneously and the interval of two pairs of welding machines is adjustable to the welding machine, can be used to weld inside reinforcing bar on the stirrup of different width, the length direction of column guide rail is as the route direction of advancing that the stirrup adds man-hour to advance under the centre gripping of centre gripping unit, can realize the action of slip feeding, slip stop cooperation welding and slip ejection of compact in proper order. Like this, as the main part of welding, can improve machining efficiency or combine other of upper and lower process to send, ejection of compact unit realizes automated production better, avoids the inside reinforcing bar of compound stirrup to rely on the problem of artifical assembly welding completely.

2. The utility model discloses a compound stirrup welding machine structure, compact structure, it is simple reliable, the suitability is strong.

Drawings

FIG. 1 is a schematic structural diagram of a composite stirrup welder according to an embodiment;

FIG. 2 is a bottom view of FIG. 1;

FIG. 3 is a perspective view of a composite stirrup welding machine configuration of an exemplary embodiment (one pair of welding machines is hidden for ease of illustration);

FIG. 4 is a perspective view from another angle based on FIG. 3;

FIG. 5 is an enlarged partial schematic view of FIG. 4;

FIG. 6 is a left side view of FIG. 1 (with a pair of welders hidden for ease of illustration);

the butt welding machine comprises a butt welding machine 1, a main body 11, an upper connecting frame 12, a pressing cylinder 13, an upper chuck 14, a lower connecting frame 15, a lower chuck 16, a feeding mechanism 2, a base plate 21, a longitudinal guide rail 22, a clamping unit 23, a nut seat 231, a structural plate 232, a main clamping arm 233, a first hinged seat 2331, a second hinged seat 2332, a main claw 234, a first telescopic cylinder 235, an auxiliary claw 236, a second telescopic cylinder 237, a clamping opening 238, a guide rail groove 239, a driving unit 24, a screw 241, a motor 242, a connecting seat 243, a transverse guide rail 3, a section steel frame 4, a connecting plate 41, a rotating seat 42, a driving screw 43, a supporting seat 44, a driving motor 45, a flat car 5 and a driving seat 51.

Detailed Description

The following describes the present invention in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 3, the composite stirrup welding machine structure of the embodiment includes two butt welding machines 1, where the butt welding machines 1 include a main body 11, a welding chuck is protruded from one side of the main body 11, the welding chuck includes an upper connection frame 12 and a lower connection frame 15 that are vertically spaced, the upper connection frame 12 is provided with an upper chuck 14, the lower connection frame 15 is provided with a lower chuck 16, the upper chuck 14 is opposite to the lower chuck 16, specifically, the upper connection frame 12 is provided with a pressing cylinder 13, a telescopic rod of the pressing cylinder 13 extends downward and is connected to the upper chuck 14 so as to match the lower chuck 16 below the upper chuck in an up-and-down motion manner to complete butt welding, and these belong to the existing structure and are not described again; the welding chucks of the two pairs of welding machines 1 are oppositely arranged so as to weld two sides of the stirrups at the same time, and the two pairs of welding machines 1 can be arranged on the two parallel horizontal guide rails 3 in a sliding way so as to slide towards or away from each other to adjust the distance, so that the stirrups with different widths can be processed; a feeding mechanism 2 is arranged on a lower connecting frame 15 of the butt welding machine 1; the feeding mechanism 2 comprises a longitudinal guide rail 22 and clamping units 23 slidably arranged on the longitudinal guide rail 22, the longitudinal guide rail 22 is perpendicular to the transverse guide rail 3 and is fixedly connected to the free end of the lower connecting frame 15, and the two clamping units 23 are positioned between the two lower clamping heads 16 so as to clamp transverse ribs of stirrups and combine the transverse ribs on the longitudinal guide rail 22 to slide to sequentially realize the actions of sliding feeding, sliding stop matching welding and sliding discharging.

In the structure of the embodiment of the composite stirrup welding machine, two pairs of welding machines 1 can weld two sides of stirrups simultaneously, the distance between the two pairs of welding machines 1 is adjustable, the welding machines can be used for welding internal reinforcements on stirrups with different widths, the length direction of the longitudinal guide rail 22 is used as the feeding path direction during stirrup machining, the stirrups are fed under the clamping of the clamping units 23, the two clamping units 23 are positioned between the two lower chucks 16 so as to clamp the transverse reinforcements of the stirrups, namely, the transverse reinforcements are parallel to one side of the longitudinal guide rail 3, the transverse reinforcements are horizontally fed (the upper stirrups can be manually fed or conveyed by a feeding unit with a roller, and are positioned to wait for the clamping of the clamping units 23), the longitudinal reinforcements on two sides of the stirrups correspond to the two lower chucks 16 and are respectively arranged on the two lower chucks 16 along with feeding, the feeding is stopped to be fed according to the designed welding position, the internal reinforcements with the same length as the transverse reinforcements of the stirrups are placed (manually or implemented by the feeding unit with a manipulator), two upper clamping heads 14 fall down to connect two ends of the internal steel bar with two side longitudinal bars of the stirrup in a welding way, the upper clamping heads 14 move upwards, two clamping units 23 continue to feed, the designed welding stop positions can be a plurality of spaced welding stop positions, the welding process is the same as that described above, after the last internal steel bar is welded, the state that the stirrup is clamped by the upper clamping heads 14 and the lower clamping heads 16 is kept (the power-on welding time is set as required, and is not always kept on power-on), the two clamping units 23 loosen the clamping of the foremost transverse bar of the stirrup, slide forwards and clamp the rearmost transverse bar of the stirrup, the upper clamping heads 14 move upwards to reset, the stirrup is loosened, and the stirrup is clamped and sent out after the stirrup is clamped by the two clamping units 23 and is continuously fed to the tail end of the longitudinal guide rail 22 (the composite stirrup can be manually taken down, or can be dropped on a discharging unit with a roller and sent out). Like this, as the main part of welding, can improve machining efficiency or combine other of process from top to bottom to send, ejection of compact unit realizes automated production better, avoids the problem that the inside reinforcing bar of compound stirrup relies on artifical assembly welding completely.

Referring to fig. 4-6, the column guide rail 22 is fixedly connected to the lower connecting frame 15 through the substrate 21, in practice, the substrate 21 may be a square steel tube, and the substrate 21 is further provided with a driving unit 24 for driving the clamping unit 23 to slide along the column guide rail 22 through a lead screw transmission manner; the clamping unit 23 comprises a nut seat 231 in transmission connection with a screw 241 of the driving unit 24, a structural plate 232 is connected to one side of the nut seat 231 far away from the lower connecting frame 15, one end of the structural plate 232 is connected with a main clamping arm 233 extending along the length direction of the longitudinal guide rail 22, one end of the main clamping arm 233 is hinged to the upper portion of one end of the structural plate 232, the free end of the main clamping arm 233 is bent upwards to form a main claw 234, a first telescopic cylinder 235 is arranged between the lower part of one end of the structural plate 232 and the free end of the main clamping arm 233 to drive the main clamping arm 233 to rotate along the hinged end thereof so as to adjust the height of the main jaw 234, the free end of the main clamping arm 233 is also hinged with an auxiliary jaw 236 which is matched with the main jaw 234 to form a clamping opening 238, and a second telescopic cylinder 237 which drives the auxiliary jaw 236 to rotate is arranged on the main clamping arm 233 so as to correspondingly complete the clamping and the releasing actions.

Thus, a practical specific mode of the feeding mechanism 2 is provided, the height of the main claw 234 and the auxiliary claw 236 which are matched to form the clamping port 238 can be adjusted under the action of the first telescopic cylinder 235, so that the related clamping and sliding yielding mechanism action can be better realized, the functional design is perfected, and the structure is simple and reliable.

A first hinge seat 2331 is convexly arranged on the lower surface of the free end of the main clamping arm 233, and two ends of the first telescopic cylinder 235 are respectively hinged with the structural plate 232 and the lower end of the first hinge seat 2331; in the length direction of the transverse guide rail 3, the thickness of the main claw 234 corresponds to that of the auxiliary claw 236, the overlapped thickness of the main claw 234 and the auxiliary claw 236 corresponds to that of the main clamping arm 233, a second hinge seat 2332 is convexly arranged on the lower surface of the hinge end of the main clamping arm 233, the second telescopic cylinder 237 is hinged to the second hinge seat 2332, a piston rod of the second telescopic cylinder 237 penetrates through the first hinge seat 2331 and is hinged to the lower end of the auxiliary claw 236, the middle part of the auxiliary claw 236 is hinged to the main claw 234, and the upper end of the auxiliary claw 236 is matched with the upper end of the main claw 234 to form the clamping opening 238.

Thus, the feed mechanism 2 is compact in structure, and the thickness of the feed mechanism 2 (in the length direction of the transverse guide rails 3) can be reduced as much as possible, so that the two pairs of welding pairs can be closer to each other when the distance is adjusted, and the feed mechanism is suitable for welding of stirrups with smaller widths, and improves applicability.

Wherein, the screw 241 of the driving unit 24 is arranged above the column guide rail 22 in parallel, and two ends are respectively connected with the connecting seat 243 and the motor 242 arranged on the base plate 21; the lower end of the nut seat 231 is connected to the column rail 22 through a rail groove 239 adapted to the column rail 22.

In this way, the driving connection and the movement smoothness of the clamping unit 23 are ensured.

Referring to fig. 2 and 3 again, the two transverse guide rails 3 are laid on the section steel frame 4, the butt welding machine 1 is erected on the transverse guide rails 3 through the flat plate trolleys 5 to improve flexibility, the section steel frame 4 below the flat plate trolleys 5 is provided with the driving screw 43, the driving screw 43 is composed of two external thread sections with opposite rotation directions, the two flat plate trolleys 5 are respectively connected with the driving screw 43 through the transmission seats 51 corresponding to the two external thread sections with opposite rotation directions, the transmission seats 51 are connected to the lower surface of the flat plate trolleys 5 in a protruding manner, two ends of the driving screw 43 are respectively rotatably connected to the rotating seats 42, the rotating seats 42 are fixedly connected in the section steel frame 4, and any end of the driving screw 43 is connected with the driving motor 45. The middle part of the driving screw 43 can rotatably penetrate through a supporting seat 44 fixedly connected in the section steel frame 4 to ensure the rigidity of the driving screw 43. During implementation, the steel frame 4 may be a square frame structure formed by enclosing H-shaped steel end to end, and the rotating seat 42 and the supporting seat 44 are fixedly connected in the steel frame 4 through the connecting plates 41 arranged at intervals in the steel frame 4.

For easy understanding, further description is given below, in practice, for convenience of control, the transformer, the pressing cylinder 13, the first telescopic cylinder 235, the second telescopic cylinder 237, the motor 242 and the driving motor 45 in the main body 11 of the butt welding machine 1 can be electrically connected with a controller, the mechanism actions of the two pairs of welding machines 1 and related mechanisms are synchronous, and when in use,

1) the controller controls the driving motor 45 to rotate, and adjusts the distance between the two pairs of welding machines 1, so that the distance between the lower chucks 16 of the two pairs of welding machines 1 corresponds to the length of the transverse bar of the stirrup to be welded;

2) the controller controls the motors 242 of the two feeding mechanisms 2 to synchronously rotate, and drives the two clamping units 23 to move to the front ends of the longitudinal guide rails 22;

3) the controller controls the first telescopic cylinder 235 to extend, and the clamping opening 238 is lifted; the controller controls the second telescopic cylinder 237 to extend, and the clamping opening 238 is closed to clamp the transverse bar at the front end of the horizontal stirrup;

4) the controller controls the motor 242 to rotate, the two clamping units 23 horizontally feed the stirrups, longitudinal bars on two sides of the stirrups are respectively arranged on the two lower chucks 16, the feeding is stopped according to the designed welding position, and internal reinforcing steel bars with the same length as the transverse bars of the stirrups are arranged;

5) the controller controls the compressing cylinder 13 to extend, the upper chuck 14 descends, the controller controls the transformer to be electrified, and the upper chuck 14 and the lower chuck 16 are matched to connect two ends of the internal steel bars with longitudinal bars on two sides of the stirrup in a welding mode;

6) the controller controls the compression cylinder 13 to retract, and the upper chuck 14 moves upwards;

7) repeating the steps 4), 5) and 6) until the welding of the last internal steel bar to be welded is designed to be completed, keeping the upper chuck 14 and the lower chuck 16 in a state of clamping the stirrup, controlling the second telescopic cylinder 237 to retract by the controller, releasing the auxiliary jaw 236 from the main jaw 234, controlling the first telescopic cylinder 235 to retract by the controller, and lowering the auxiliary jaw 236 and the main jaw 234 to be lower than the transverse rib of the stirrup to avoid the transverse rib to prepare for sliding;

8) the controller controls the motor 242 to rotate, drives the two clamping units 23 to slide towards the front ends of the longitudinal guide rails 22, and stops in combination with the length of the longitudinal bars of the stirrups;

9) the controller controls the first telescopic cylinder 235 to extend, and the clamping opening 238 is lifted; the controller controls the second telescopic cylinder 237 to extend, and the clamping opening 238 is closed to clamp the transverse rib at the rear end of the stirrup;

10) the controller controls the compression cylinder 13 to retract, and the upper chuck 14 moves upwards;

11) the controller controls the motor 242 to rotate, and drives the two clamping units 23 to slide to the tail ends of the longitudinal guide rails 22;

12) the controller controls the second telescopic cylinder 237 to retract, the auxiliary jaw 236 and the main jaw 234 to release, so that the composite stirrup is sent out, the controller controls the first telescopic cylinder 235 to retract, and the auxiliary jaw 236 and the main jaw 234 descend to prepare for next clamping.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims (6)

1. The composite stirrup welding machine structure comprises two butt welding machines, each butt welding machine comprises a main body, a welding chuck is arranged on one side of each main body in a protruding mode, each welding chuck comprises an upper connecting frame and a lower connecting frame which are vertically arranged at intervals, an upper chuck is arranged on each upper connecting frame, and a lower chuck is arranged on each lower connecting frame; the method is characterized in that: the welding chucks of the two pairs of welding machines are oppositely arranged so as to weld two sides of the stirrups at the same time, and the two pairs of welding machines can be arranged on two parallel transverse guide rails in a sliding way so as to adjust the space, so that the two pairs of welding machines are suitable for processing stirrups with different widths; a feeding mechanism is arranged on a lower connecting frame of the butt welding machine;

the feeding mechanism comprises a longitudinal guide rail and clamping units arranged on the longitudinal guide rail in a sliding manner, the longitudinal guide rail is perpendicular to a transverse guide rail and is fixedly connected with the free end of the lower connecting frame, and the two clamping units are positioned between the two lower chucks so as to clamp transverse ribs of stirrups and combine the sliding on the longitudinal guide rail to sequentially realize the actions of sliding feeding, sliding stop matching welding and sliding discharging.

2. The composite stirrup welder structure of claim 1, wherein: the longitudinal guide rail is fixedly connected with the lower connecting frame through a substrate, and the substrate is also provided with a driving unit and drives the clamping unit to slide along the longitudinal guide rail in a lead screw transmission mode; the clamping unit comprises a nut seat in transmission connection with a screw of the driving unit, one side, far away from the lower connecting frame, of the nut seat is connected with a structural plate, one end of the structural plate is connected with a main clamping arm extending along the length direction of the longitudinal guide rail, one end of the main clamping arm is hinged to the upper portion of one end of the structural plate, the free end of the main clamping arm is bent upwards to form a main claw, a first telescopic cylinder is arranged between the lower portion of one end of the structural plate and the free end of the main clamping arm to drive the main clamping arm to rotate along the hinged end of the main clamping arm so as to adjust the height of the main claw, the free end of the main clamping arm is hinged to an auxiliary claw matched with the main claw to form a clamping opening, and a second telescopic cylinder for driving the auxiliary claw to rotate is arranged on the main clamping arm.

3. The composite stirrup welder structure of claim 2, wherein: the lower surface of the free end of the main clamping arm is convexly provided with a first hinge seat, and two ends of the first telescopic cylinder are respectively hinged with the structural plate and the lower end of the first hinge seat; on the length direction of the transverse guide rail, the main claw corresponds to the thickness of the auxiliary claw, the thickness of the main claw and the thickness of the auxiliary claw which are overlapped correspond to the main clamping arm, a second hinging seat is arranged on the lower surface of the hinging end of the main clamping arm in a protruding mode, a second telescopic cylinder is hinged to the second hinging seat, a piston rod of the second telescopic cylinder penetrates through the first hinging seat and is hinged to the lower end of the auxiliary claw, the middle of the auxiliary claw is hinged to the main claw, and the upper end of the auxiliary claw is matched with the upper end of the main claw to form the clamping opening.

4. The composite stirrup welder structure of claim 2, wherein: the screw of the driving unit is arranged above the longitudinal guide rail in parallel, and two ends of the screw are respectively connected with a connecting seat and a motor which are arranged on the substrate; the lower end of the nut seat is connected with the longitudinal guide rail through a guide rail groove matched with the longitudinal guide rail.

5. The composite stirrup welder structure according to any of claims 1-4, wherein: two ranks guide rail are laid on the shaped steel frame, and the butt welder erects on the ranks guide rail in order to improve the flexibility through the flat car, is equipped with drive screw in the shaped steel frame of flat car below, drive screw comprises two external screw thread sections opposite to the direction of rotation, two flat cars respectively through with the transmission seat that two external screw thread sections opposite to the direction of rotation correspond with drive screw is connected, the transmission seat arch is connected in the lower surface of flat car, drive screw's both ends are rotatable coupling respectively on rotating the seat, it links firmly in the shaped steel frame to rotate the seat, and drive screw's arbitrary end is connected with driving motor.

6. The composite stirrup welder structure of claim 5, wherein: the middle part of the driving screw rod can rotatably penetrate through the supporting seat fixedly connected in the section steel frame so as to ensure the rigidity of the driving screw rod.

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