CN218395751U - Steel bar welding unit and steel bar welding equipment - Google Patents

Abstract

The utility model discloses a steel bar welding unit and steel bar welding equipment. This steel bar welding unit is including removing the frame, elastic buffer subassembly and welding subassembly, the elastic buffer subassembly includes first mounting bracket, the guide post, elastomer and movable block, first mounting bracket fixed connection is in removing the frame, the guide post is worn to establish on first mounting bracket, the elastomer cover is established on the guide post, and the one end of elastomer is fixed to be set up, the movable cover of movable block is established on the guide post and is supported and press on the other end of elastomer, the welding subassembly includes actuating mechanism, go up welding electrode and welding electrode down. This steel bar welding unit is through with welding assembly fixed connection on the movable block to make whole welding assembly can reciprocate along the guide post along the movable block, so make whole steel bar welding unit have the self-adaptability, not only can adapt to because steel bar welding depth of fusion takes place the reinforcing bar net piece that warp, and be applicable to and weld the horizontal reinforcing bar and the longitudinal reinforcement of different specifications.

Description

Steel bar welding unit and steel bar welding equipment

Technical Field

The utility model relates to a precast beam makes technical field, especially relates to a steel bar welding unit and steel bar welding equipment.

Background

The precast beam is widely applied to railways, and the construction of the steel ribs of the precast beam is an important step for manufacturing the precast beam and comprises the working procedures of processing, transporting, laying, welding, binding and the like of steel bars. The steel bar welding equipment is indispensable equipment in the welding procedure, and is used for welding the horizontal reinforcing steel bars and the longitudinal reinforcing steel bars which are arranged crosswise, thereby forming the reinforcing steel bar mesh. The welding process of the reinforcing mesh comprises a plurality of welding cycles, wherein the welding cycles refer to welding operation of welding a plurality of longitudinal reinforcing steel bars to the same transverse reinforcing steel bar, for example, the welding operation can be completed by a movable welding head, and the first, second, third and the like longitudinal reinforcing steel bars are welded to the same transverse reinforcing steel bar in sequence, or the first, second, third and the like longitudinal reinforcing steel bars are welded to the same transverse reinforcing steel bar by a plurality of welding heads simultaneously.

However, because the transverse steel bars and the longitudinal steel bars can be deeply melted in the welding process, the transverse steel bars and the longitudinal steel bars are deformed near welding points, the self-adaptability of the existing steel bar welding unit is poor, the positions of two welding electrodes cannot be adjusted according to the penetration, and the welding effect is poor. And when the specifications of horizontal reinforcing bar and vertical reinforcing bar changed, also need adjust the position of two welding electrode, current steel bar welding unit accommodation process is loaded down with trivial details, and the suitability is poor.

Therefore, how to provide a steel bar welding unit and steel bar welding equipment which have good adaptability and can flexibly adjust the positions of two welding electrodes according to the welding penetration of steel bars and the specification of the steel bars is a technical problem which needs to be solved at present.

SUMMERY OF THE UTILITY MODEL

A first object of the utility model is to provide a steel bar welding unit, this steel bar welding unit's adaptability is good, can be according to the position of two welding electrode of the nimble adjustment of steel bar welding penetration and reinforcing bar specification.

To achieve the purpose, the utility model adopts the following technical proposal:

the steel bar welding unit includes: moving the frame; the elastic buffer assembly comprises a first mounting frame, a guide post, an elastic body and a moving block, the first mounting frame is fixedly connected to the moving rack, the guide post penetrates through the first mounting frame, the elastic body is sleeved on the guide post, one end of the elastic body is fixedly arranged, and the moving block is movably sleeved on the guide post and abuts against the other end of the elastic body; the welding subassembly, the welding subassembly fixed connection be in on the movable block, the welding subassembly includes actuating mechanism, goes up welding electrode and welding electrode down, it connects to go up welding electrode actuating mechanism's drive end, lower welding electrode with go up welding electrode and set up relatively, just down welding electrode with form the welding space of holding horizontal reinforcing bar and longitudinal reinforcement between the last welding electrode, actuating mechanism can drive go up welding electrode and move towards being close to or keeping away from welding electrode's direction down.

Preferably, the reinforcing bar welding unit further comprises a guide mechanism for guiding the longitudinal reinforcing bar.

Preferably, the guide mechanism is a guide frame, the guide frame is arranged on one side of the lower welding electrode, the guide frame comprises a supporting portion and a guide portion which are connected with each other, the supporting portion is used for supporting the end portion of the longitudinal steel bar, a V-shaped guide groove is formed in the guide portion, and the longitudinal steel bar is arranged in the V-shaped guide groove.

Preferably, the steel bar welding unit further comprises a transformer, an upper welding lead and a lower welding lead, the transformer is fixedly connected to the movable rack, and the transformer is electrically connected to the upper welding electrode through the upper welding lead and is electrically connected to the lower welding electrode through the lower welding lead.

As preferred, the steel bar welding unit still includes the direction subassembly, the direction subassembly includes second mounting bracket, guiding axle, linear bearing and removal cover, second mounting bracket fixed connection be in remove the frame, the guiding axle wears to be established on the second mounting bracket, the linear bearing cover is established on the guiding axle, it establishes to remove the cover linear bearing is last, just remove the cover with actuating mechanism fixed connection.

Preferably, the steel bar welding unit further comprises a floating support assembly, the floating support assembly comprises a support seat, a floating seat and a pin shaft, the support seat is fixedly connected to the movable rack, a guide block is convexly arranged on the support seat along a first direction, a guide long hole is formed in the guide block in a penetrating mode along a direction perpendicular to a second direction of the first direction, a long edge of the guide long hole is parallel to the first direction, a containing groove is formed in the floating seat, a pin hole is formed in the floating seat, the pin shaft penetrates through the pin hole and is arranged in the guide long hole, and the floating seat is fixedly connected with the lower welding electrode.

Preferably, the steel bar welding unit further comprises a connecting plate, one end of the connecting plate is connected with the driving mechanism, and the other end of the connecting plate is connected with the floating seat.

Preferably, the guide long hole is a waist-shaped hole, the pin hole is a round hole, and the width of the guide long hole is larger than the diameter of the pin hole.

A second object of the utility model is to provide a steel bar welding equipment, this steel bar welding equipment's adaptability is good, can adjust two welding electrode's position according to the steel bar welding depth of fusion and reinforcing bar specification is nimble.

To achieve the purpose, the utility model adopts the following technical proposal:

the steel bar welding equipment comprises at least one steel bar welding unit.

Preferably, the steel bar welding equipment further comprises a driving unit and a guide rail, the moving frames of the steel bar welding units are movably arranged on the guide rail, and the driving unit is used for driving the steel bar welding units to move along the guide rail respectively.

The utility model has the advantages that:

the utility model provides a steel bar welding unit is including removing the frame, elastic buffer subassembly and welding subassembly, the elastic buffer subassembly includes first mounting bracket, the guide post, elastomer and movable block, first mounting bracket fixed connection is in removing the frame, the guide post is worn to establish on first mounting bracket, the elastomer cover is established on the guide post, and the one end of elastomer is fixed to be set up, the movably cover of movable block is established on the guide post and is supported and press on the other end of elastomer, welding subassembly includes actuating mechanism, go up welding electrode and welding electrode down, form the welding space of holding transverse reinforcement and longitudinal reinforcement between welding electrode and the last welding electrode down, actuating mechanism can drive welding electrode and move towards the direction of being close to or keeping away from welding electrode down along first direction. This steel bar welding unit is through with welding subassembly fixed connection on the movable block to make whole welding subassembly can reciprocate along the guide post along the movable block, so make whole steel bar welding unit have the self-adaptability, not only can adapt to because the steel bar mesh piece that the steel bar welding penetration takes place to warp, and be applicable to and weld the horizontal reinforcing bar and the vertical reinforcing bar of different specifications.

Drawings

Fig. 1 is a schematic structural view of a steel bar welding unit provided in an embodiment of the present invention;

fig. 2 is a front view of a steel bar welding unit according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of the structure of FIG. 1;

fig. 4 is a schematic structural view of the reinforcement welding unit provided in the embodiment of the present invention after the connection plate and a part of the second mounting bracket are removed;

fig. 5 is a schematic structural view of a part of a supporting seat and a floating seat of a steel bar welding unit according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a guiding frame of a steel bar welding unit according to an embodiment of the present invention.

In the figure:

1. moving the frame;

2. an elastic buffer component; 201. a first mounting bracket; 202. a guide post; 203. an elastomer; 204. a moving block;

3. welding the assembly; 301. a drive mechanism; 302. an upper welding electrode; 303. a lower welding electrode;

4. a guide frame; 401. a support portion; 402. a V-shaped guide groove;

5. a transformer; 6. welding a lead; 7. welding a lower lead;

8. a guide assembly; 801. a second mounting bracket; 802. a guide shaft; 803. a linear bearing; 804. moving the sleeve;

9. a floating support assembly; 901. a supporting seat; 9011. a guide block; 9012. a guide long hole; 902. a floating seat; 9021. a guide groove; 9022. a pin hole;

10. a connecting plate;

11. a slider;

100. longitudinal reinforcing steel bars;

200. and transverse reinforcing steel bars.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 4, the present embodiment provides a reinforcing bar welding unit capable of performing a welding operation at the crossing points of the transverse reinforcing bars 200 and the longitudinal reinforcing bars 100 arranged to cross, thereby welding the crossing points of the transverse reinforcing bars 200 and the longitudinal reinforcing bars 100 to form welding spots.

As shown in fig. 1, the reinforcing bar welding unit includes a moving frame 1, an elastic buffer member 2, and a welding member 3. Wherein, remove the frame 1 and be main mounting structure, the installation of elasticity buffering subassembly 2 to removing on the frame 1, and remove the frame 1 and can remove under the drive of external drive unit to realize the removal of steel bar welding unit. In some specific embodiments, the moving gantry 1 is a plate-like structure, which is arranged in a vertical direction. The elastic buffer member 2 is disposed on a side wall surface of the moving frame 1, for example, may be disposed on a left side wall or a right side wall.

With continued reference to fig. 1, the elastic buffer assembly 2 includes a first mounting frame 201, a guide post 202, an elastic body 203, and a moving block 204. The first mounting frame 201 is fixedly connected to the movable frame 1, the guide column 202 penetrates through the first mounting frame 201, the elastic body 203 is sleeved on the guide column 202, one end of the elastic body 203 is fixedly arranged, and the movable block 204 is movably sleeved on the guide column 202 and abuts against the other end of the elastic body 203. So set up, can make the movable block 204 can move along guide post 202 under the effect of external force to support and press the elastomer 203 at the removal in-process, the elastomer 203 can cushion the movable block 204, thereby avoids the movable block 204 translation rate too fast.

In some specific embodiments, the first mounting frame 201 is a U-shaped frame, and a bottom plate of the U-shaped frame is fixedly connected to the moving frame 1 by welding, clamping, or connecting. In some embodiments, the guide posts 202 are vertically disposed and pass through two side plates of the U-shaped frame. The elastic body 203 is a coil spring sleeved on the guide post 202, the coil spring is located between two side plates of the U-shaped frame, the bottom end of the coil spring is fixedly connected with the side plate below the U-shaped frame, the top end of the coil spring and the side plate above the U-shaped frame are arranged at intervals, the moving block 204 is located between the top end of the coil spring and the side plate above the U-shaped frame, and the moving block 204 is fixedly connected with or abutted to the top end of the coil spring. Can realize welding set 3 nimble removal in vertical side so to can carry out the adaptability when welding the horizontal reinforcing bar 200 and the longitudinal reinforcement 100 to different specifications and adjust because the reinforcing bar deformation that the steel bar welding penetration leads to and improve welding effect and welding efficiency.

With continued reference to fig. 1, the welding assembly 3 is fixedly attached to the moving block 204, and the entire welding assembly 3 can move up and down in the vertical direction synchronously with the moving block 204. Specifically, the welding assembly 3 includes a drive mechanism 301, an upper welding electrode 302, and a lower welding electrode 303. The upper welding electrode 302 is connected to a driving end of the driving mechanism 301, and the upper welding electrode 302 can move up or down in the vertical direction by the driving of the driving mechanism 301. The lower welding electrode 303 and the upper welding electrode 302 are arranged opposite to each other in the vertical direction, a welding space for accommodating the transverse reinforcing steel bar 200 and the longitudinal reinforcing steel bar 100 is formed between the lower welding electrode 303 and the upper welding electrode 302, and the driving mechanism 301 can drive the upper welding electrode 302 to move towards a direction close to or away from the lower welding electrode 303.

The crossing point of the transverse reinforcing bar 200 and the longitudinal reinforcing bar 100 is located between the upper welding electrode 302 and the lower welding electrode 303, and it should be noted that the transverse reinforcing bar 200 can be disposed above the longitudinal reinforcing bar 100, and can also be disposed below the longitudinal reinforcing bar 100. In an initial state, the interval between the upper welding electrode 302 and the lower welding electrode 303 is greater than the sum of the heights of the transverse reinforcing bars 200 and the longitudinal reinforcing bars 100, so that the transverse reinforcing bars 200 and the longitudinal reinforcing bars 100 can be smoothly introduced between the transverse reinforcing bars 200 and the longitudinal reinforcing bars 100. When welding operation is required, the driving mechanism 301 drives the upper welding electrode 302 to move towards the direction close to the lower welding electrode 303, so that the upper welding electrode 302 and the lower welding electrode 303 are pressed against the upper side and the lower side of the overlapped transverse steel bar 200 and longitudinal steel bar 100, and the welding operation can be performed by discharging electricity from the upper welding electrode 302 and the lower welding electrode 303. In the welding process, due to the existence of the welding penetration of the steel bars, partial structures of the transverse steel bars 200 and the longitudinal steel bars 100 are fused together, so that the sum of the heights of the transverse steel bars 200 and the longitudinal steel bars 100 (namely the sum of the diameters of the transverse steel bars 200 and the diameters of the longitudinal steel bars 100) is changed, and at the moment, due to the existence of the elastic buffer assembly 2, the positions of the upper welding electrode 302 and the lower welding electrode 303 can be adaptively adjusted, so that the welding effect is improved. After the welding operation is completed, the driving mechanism 301 drives the upper welding electrode 302 to move in a direction away from the lower welding electrode 303, and after the upper welding electrode and the lower welding electrode are separated by a certain distance, the external driving unit can drive the whole steel bar welding unit to move.

In some specific embodiments, the drive mechanism 301 is a drive cylinder. In some specific embodiments, the upper welding electrode 302 and the lower welding electrode 303 are both square electrode blocks.

It should be noted that, since the upper welding electrode 302 and the lower welding electrode 303 are provided at an interval, in order to enable the entire welding module 3 to move up and down synchronously with the moving block 204, as shown in fig. 1, the reinforcing bar welding unit further includes a connecting plate 10, one end of the connecting plate 10 is connected to the driving mechanism 301, specifically to the cylinder of the driving cylinder, and the other end of the connecting plate 10 is connected to the lower welding electrode 303. This does not interfere with the movement of the upper welding electrode 302 relative to the lower welding electrode 303, but also allows the entire welding assembly 3 to be connected as a unit.

Of course, in other embodiments, a sliding frame (not shown) may be used to connect the upper welding electrode 302 and the lower welding electrode 303, that is, the lower welding electrode 303 is fixedly connected to the sliding frame, and the upper welding electrode 302 is slidably connected to the sliding frame, so that the whole welding assembly 3 can be connected as a whole without affecting the movement of the upper welding electrode 302 relative to the lower welding electrode 303.

Further, as shown with continued reference to fig. 1, 2, and 4, the bar welding unit further includes a transformer 5, a welding upper lead 6, and a welding lower lead 7. The transformer 5 is fixedly connected to the movable rack 1, specifically, fixedly connected to the front side or the rear side of the movable rack 1, and the transformer 5 is mounted to the front side or the rear side with a large area and has high stability because the movable rack 1 has a plate-shaped structure. The transformer 5 is electrically connected to the upper welding electrode 302 by the upper welding wire 6 and to the lower welding electrode 303 by the lower welding wire 7.

In some specific embodiments, the upper bonding wire 6 and the lower bonding wire 7 are both wires having a certain hardness and capable of deforming under a certain external force, so that the upper bonding wire 6 and the lower bonding wire 7 are easily wired and do not interfere with the movement of the upper bonding electrode 302 and the lower bonding electrode 303. In some more specific embodiments, the solder upper conductors 6 and the solder lower conductors 7 are each of a U-shaped configuration.

Further, as shown in fig. 1 and 4, the reinforcing bar welding unit further includes a guide assembly 8, and the guide assembly 8 is used for providing a guide function for the movement of the welding assembly 3 in the vertical direction, so as to improve the movement accuracy of the welding assembly 3 in the vertical direction. Specifically, the guide assembly 8 includes a second mounting bracket 801, a guide shaft 802, a linear bearing 803, and a moving sleeve 804. The second mounting rack 801 is fixedly connected to the movable rack 1, the guide shaft 802 penetrates through the second mounting rack 801, the linear bearing 803 is sleeved on the guide shaft 802, the movable sleeve 804 is sleeved on the linear bearing 803, and the movable sleeve 804 is fixedly connected with the driving mechanism 301.

In some specific embodiments, the second mounting rack 801 is a box structure, a bottom plate of the second mounting rack 801 is fixedly connected to a side wall of the mobile rack 1, the second mounting rack 801 is located just below the first mounting rack 201, an opening of the second mounting rack 801 faces the welding assembly 3, the guide shaft 802 is vertically arranged inside the second mounting rack 801, one end of the movable sleeve 804 is sleeved outside the guide shaft 802, and the other end of the movable sleeve 804 is fixedly connected to the connecting plate 10. In some more specific embodiments, the number of the connecting plates 10 is two, and the two connecting plates are respectively fixedly connected to the front side and the rear side of the welding assembly 3, and the other end of the moving sleeve 804 extends between the two connecting plates 10 and is fixedly connected to both of the two connecting plates 10, and the fixed connection is implemented by adopting a screw connection.

Further, as shown in fig. 1, 3 and 5, the reinforcing bar welding unit further includes a floating support assembly 9, and the floating support assembly 9 is used for supporting the lower welding electrode 303 and guiding the movement of the lower welding electrode 303 in the vertical direction. Specifically, the floating support assembly 9 includes a support base 901, a floating base 902 and a pin shaft (not shown in the figure), the support base 901 is fixedly connected to the moving frame 1, a guide block 9011 is convexly arranged on the support base 901 along the vertical direction, a guide long hole 9012 is formed in the guide block 9011 along the horizontal direction in a penetrating manner, a long side of the guide long hole 9012 is vertically arranged, a guide groove 9021 for accommodating the guide block 9011 is formed in the floating base 902, a pin hole 9022 is formed in the floating base 902, the pin shaft is arranged in the pin hole 9022 and the guide long hole 9012 in a penetrating manner, and the floating base 902 is fixedly connected with the lower welding electrode 303.

When the whole welding assembly 3 moves in the vertical direction along with the moving block 204, the supporting seat 901, the floating seat 902 and the pin shaft are matched with each other to provide guidance and support for the lower welding electrode 303, so that the moving precision of the lower welding electrode 303 is improved, and the problem that the subsequent welding quality is influenced by moving dislocation is avoided.

In some specific embodiments, the long guide hole 9012 is a kidney-shaped hole, the pin hole 9022 is a circular hole, and the width of the long guide hole 9012 is greater than the diameter of the pin hole 9022, so that the assembly difficulty of the pin shaft penetrating through the long guide hole 9012 can be reduced, and the flexibility of the floating seat 902 in moving relative to the support seat 901 can be improved. Of course, in some other embodiments, the long guide holes 9012 may be elliptical holes or rectangular holes.

Further, the bar welding unit further includes a guide mechanism for guiding the longitudinal bars 100. In some specific embodiments, as shown in fig. 1 and 6, the guide mechanism is a guide frame 4, the guide frame 4 is disposed at one side of the lower welding electrode 303, the guide frame 4 includes a support portion 401 and a guide portion connected to each other, the support portion 401 is used for supporting an end portion of the longitudinal bar 100, the guide portion is provided with a V-shaped guide groove 402, and the longitudinal bar 100 is disposed in the V-shaped guide groove 402. In some embodiments, the guiding mechanism is fixedly connected to the supporting base 901. The guide mechanism can improve the position precision of the longitudinal steel bar 100, is beneficial to improving the welding precision of the longitudinal steel bar 100 and the transverse steel bar 200, and can improve the welding efficiency of the steel bar net piece.

The embodiment also provides a steel bar welding device which comprises a driving unit, a guide rail and at least one steel bar welding unit. When the steel bar welding unit is a plurality of, a plurality of steel bar welding units set up side by side, and on the equal movably guide rail of arranging in of removal frame 1 of each steel bar welding unit, the drive unit is used for driving a plurality of steel bar welding units respectively and removes along the guide rail to realize that a plurality of steel bar welding units weld a set of crosspoint of horizontal reinforcing bar 200 and longitudinal reinforcement 100 simultaneously. In some specific embodiments, the driving unit is a driving motor or a driving cylinder, a sliding block 11 is disposed on the moving frame 1, and the sliding block 11 is in sliding fit with the sliding rail.

This steel bar welding equipment is through adopting foretell steel bar welding unit to have higher adaptability, not only can adapt to because the penetration takes place the reinforcing bar net piece that warp, and be applicable to and weld the horizontal reinforcing bar and the vertical reinforcing bar of different specifications, it is effectual to weld, and welding efficiency is high.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The steel bar welding unit, its characterized in that includes:

a mobile frame (1);

the elastic buffer assembly (2) comprises a first mounting frame (201), a guide post (202), an elastic body (203) and a moving block (204), the first mounting frame (201) is fixedly connected to the moving rack (1), the guide post (202) penetrates through the first mounting frame (201), the elastic body (203) is sleeved on the guide post (202), one end of the elastic body (203) is fixedly arranged, and the moving block (204) is movably sleeved on the guide post (202) and abuts against the other end of the elastic body (203);

welding subassembly (3), welding subassembly (3) fixed connection is in on moving block (204), welding subassembly (3) include actuating mechanism (301), go up welding electrode (302) and welding electrode (303) down, it connects to go up welding electrode (302) the drive end of actuating mechanism (301), lower welding electrode (303) with go up welding electrode (302) and set up relatively, just down welding electrode (303) with form the welding space who holds horizontal reinforcing bar (200) and longitudinal reinforcement (100) between last welding electrode (302), actuating mechanism (301) can drive go up welding electrode (302) and move towards being close to or keeping away from the direction of welding electrode (303) down.

2. The reinforcing bar welding unit according to claim 1,

the bar welding unit further comprises a guiding mechanism for guiding the longitudinal bars (100).

3. The reinforcing bar welding unit according to claim 2,

guiding mechanism is leading truck (4), leading truck (4) set up one side of welding electrode (303) down, leading truck (4) are including interconnect's supporting part (401) and guide part, supporting part (401) are used for supporting the tip of vertical reinforcing bar (100), be provided with V type guide slot (402) on the guide part, vertical reinforcing bar (100) are arranged in V type guide slot (402).

4. The reinforcing bar welding unit according to claim 1,

the steel bar welding unit further comprises a transformer (5), an upper welding wire (6) and a lower welding wire (7), the transformer (5) is fixedly connected to the movable rack (1), the transformer (5) is connected to the upper welding wire (6) electrically with the upper welding electrode (302), and the lower welding wire (7) is connected to the lower welding electrode (303) electrically.

5. The reinforcing bar welding unit according to claim 1,

the steel bar welding unit further comprises a guide assembly (8), the guide assembly (8) comprises a second mounting frame (801), a guide shaft (802), a linear bearing (803) and a movable sleeve (804), the second mounting frame (801) is fixedly connected to the movable rack (1), the guide shaft (802) penetrates through the second mounting frame (801), the linear bearing (803) is sleeved on the guide shaft (802), the movable sleeve (804) is sleeved on the linear bearing (803), and the movable sleeve (804) is fixedly connected with the driving mechanism (301).

6. The reinforcing bar welding unit according to any one of claims 1 to 5,

the steel bar welding unit further comprises a floating support assembly (9), the floating support assembly (9) comprises a support seat (901), a floating seat (902) and a pin shaft, the support seat (901) is fixedly connected to the movable rack (1), a guide block (9011) is convexly arranged on the support seat (901) along a first direction, a guide long hole (9012) penetrates through the guide block (9011) along a second direction perpendicular to the first direction, the long edge of the guide long hole (9012) is parallel to the first direction, a guide groove (9021) for accommodating the guide block (9011) is arranged on the floating seat (902), a pin hole (9022) is formed in the floating seat (902), the pin shaft penetrates through the pin hole (9022) and the guide long hole (9012), and the floating seat (902) is fixedly connected with the lower welding electrode (303).

7. The reinforcing bar welding unit according to claim 6,

the steel bar welding unit further comprises a connecting plate (10), one end of the connecting plate (10) is connected with the driving mechanism (301), and the other end of the connecting plate is connected with the floating seat (902).

8. The reinforcing bar welding unit according to claim 6,

the long guide hole (9012) is a waist-shaped hole, the pin hole (9022) is a round hole, and the width of the long guide hole (9012) is larger than the diameter of the pin hole (9022).

9. A rebar welding apparatus comprising at least one rebar welding unit of any one of claims 1-8.

10. The reinforcing bar welding apparatus according to claim 9,

the steel bar welding equipment further comprises a driving unit and a guide rail, wherein a plurality of movable racks (1) of the steel bar welding units are movably arranged on the guide rail, and the driving unit is used for driving the plurality of steel bar welding units to move along the guide rail respectively.

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