Steel bar butt-welding machine for constructional engineering

Abstract

The invention relates to the technical field of building construction, in particular to a reinforcing steel bar butt-welding machine for constructional engineering. The reinforcing steel bar butt-welding machine for constructional engineering can block bursting sparks and high-temperature reinforcing steel bar chippings and can conduct rust removal and polishing on reinforcing steel bars before welding. A reinforcing steel bar butt-welding machine for constructional engineering comprises a base, a welding table, a welding device and the like. A welding table is installed on the base, and welders are installed on the welding table at intervals. When a double-shaft motor operates, a grinding belt can rotate, at the moment, a steel bar is placed on a sliding block in a buffering frame, at the moment, rust on the surface of the steel bar can be ground away by pulling the steel bar back and forth left and right, and due to the fact that the moving distance of a welding device is fixed, a baffle on a mounting frame can just rotate by 90 degrees when a straight gear rotates; and therefore, the bursting sparks and the high-temperature steel bar chippings can be blocked, and the effects that the bursting sparks and the high-temperature steel bar chippings can be blocked, and the steel bars can be derusted and polished before being welded are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and particularly to a steel bar butt welder for building engineering. Background Art

[0002] The butt welder is also called a current welder or a resistance butt welder. They utilize the principle of inductance. When the inductance is connected and disconnected, a huge voltage change will occur. The high-voltage arc generated when the positive and negative poles are short-circuited instantaneously is used to melt the solder on the welding electrode to achieve the purpose of atomic bonding.

[0003] When the steel bar butt welder is welding, a large amount of sparks and high-temperature steel bar debris will be ejected at the welding point. However, the existing steel bar butt welder has no protection against this, thus posing a great safety hazard. At the same time, when two steel bars are butt-welded, they need to be connected to the power supply separately. Due to the presence of rust, the conductivity of the steel bars will be greatly reduced, affecting the welding. Summary of the Invention

[0004] In order to overcome the shortcomings in the prior art, a steel bar butt welder for building engineering is provided, which can block the ejected sparks and high-temperature steel bar debris and can rust-remove and polish the steel bars before welding.

[0005] The technical solution is as follows: A steel bar butt welder for building engineering includes: a base, a welding table, a welder, and a control console. The welding table is installed on the base, the welders are installed on the welding table at intervals, and the control console is installed on the welding table. It also includes a mounting plate, a double-shaft motor, a grinding belt, a transmission assembly, a buffer assembly, a sliding frame, a mounting frame, a baffle, a spur gear, a connecting plate, a limiting frame, a rack, and a locking assembly. The front side of the top of the base is connected with the mounting plate at intervals. A double-shaft motor is installed on the base, which corresponds to the mounting plate. The grinding belt is rotatably connected to the rear mounting plate. The grinding belt is connected to the right output shaft of the double-shaft motor through the transmission assembly. Buffer assemblies are provided on both the left and right sides of the mounting plate. The front mounting plate is symmetrically connected with sliding frames on the left and right. The mounting frame is slidably connected to the sliding frame. The baffles are rotatably connected to the mounting frame at intervals. The spur gear is rotatably connected to the mounting frame and is connected to the end of the baffle. The top ends of the baffles in the mounting frame are commonly connected with the connecting plate. The welder is connected with the limiting frame, and the end of the limiting frame is connected with the rack, and the rack can be meshed with the spur gear. A locking assembly for blocking the sliding of the mounting frame is installed on the mounting plate.

[0006] In one embodiment, the transmission assembly is composed of a pulley and a transmission belt. A large pulley is connected to the left output shaft of the double-shaft motor through a coupling. The end of the grinding belt is connected with a small pulley. A transmission belt is wound between the large pulley and the small pulley.

[0007] In one embodiment, the buffer assembly consists of a buffer frame, a slider, a tension spring, a pulley, a transmission belt and a limit plate. The front side of the base is symmetrically connected to the buffer frame on the left and right sides. The buffer frames on the left and right sides are respectively located on the left and right sides of the mounting plate. There is a gap between the buffer frame and the mounting plate. A slider is slidably connected in the buffer frame. A tension spring is provided between the slider and the buffer frame. The left and right sides of the rear mounting plate are symmetrically connected to the pulleys for rotation up and down. A transmission belt is wound between the upper and lower pulleys, and the transmission belt is connected with a limit plate at intervals.

[0008] In one embodiment, the locking assembly consists of a mounting frame, a sliding block and a spring sheet. The mounting frame is connected to the left edge of the front mounting plate, the mounting frame corresponds to the sliding frame, and the sliding block is slidably connected inside the mounting frame. The sliding block can pass through the sliding frame and contact the mounting frame, and a spring sheet is provided between the sliding block and the mounting frame.

[0009] In one embodiment, a protective cover, a dust removal box, a duct, and a suction nozzle are also included. A protective cover is installed on the welding table, corresponding to the welder. A dust removal box is connected to the top of the protective cover. A duct is sealed and connected to the air inlet of the dust removal box. The end of the duct extends toward the mounting plate. Suction nozzles are symmetrically installed on the rear mounting plate, one on each side of the grinding belt. The ducts are connected to the suction nozzles on both sides. When the dust removal box is activated, the dust removal box absorbs the debris generated during grinding through the suction nozzle and enters the dust removal box through the duct, effectively preventing the debris generated during grinding of steel bars from being scattered everywhere and affecting the working environment. At the same time, the protective cover can further block the large amount of sparks generated during welding.

[0010] In one embodiment, the end of the conduit is of a three-way design.

[0011] In one embodiment, a belt module and a gear set are further included. The belt module is mounted on the inner bottom between the front and rear mounting plates. The end of the belt module is connected to the right output shaft of the dual-axis motor via the gear set. When the dual-axis motor is operating, the worm gear on the right output shaft rotates, which in turn rotates the worm gear meshing with it, thereby rotating the belt module connected to the worm gear. When the belt module is operating, when the rebar drops to the inner bottom of the mounting plate and contacts the belt module, the belt module causes the rebar to slide out from one side, eliminating the need to manually remove the rebar after grinding.

[0012] In one embodiment, the gear set is a worm gear, and the output shaft on the right side of the dual-axis motor is connected to a worm gear through a coupling. The end of the belt module passes through the rear mounting plate and is connected to a worm gear, and the worm gear is meshed with the worm gear.

[0013] In one embodiment, it further includes a support, a bidirectional reciprocating screw rod, a servo motor, a small sprocket, a large sprocket, a transmission chain, a feed hopper and a top block. Supports are symmetrically connected to the left and right sides of the front side of the welding table. A bidirectional reciprocating screw rod is rotatably connected within the supports. A servo motor is installed at the bottom right of the welding table. The output shaft of the servo motor penetrates through the welding table and is connected to a small sprocket. The left side of the bidirectional reciprocating screw rod is connected to a large sprocket. A transmission chain is wound between the small sprocket and the large sprocket. Feed hoppers are installed at the edges of the left and right sides of the base. The feed hoppers correspond to the welder. Top blocks are threadedly connected to both the left and right ends of the bidirectional reciprocating screw rod. The left and right top blocks are respectively located within the left and right feed hoppers. Place the steel bars to be welded into the left and right feed hoppers respectively. When the servo motor operates, it will cause the small sprocket to rotate, and then drive the large sprocket to rotate through the transmission chain, thereby driving the bidirectional reciprocating screw rod to rotate. When the bidirectional reciprocating screw rod rotates, the top blocks threadedly connected to it will move towards the welder. Since the threads at the ends of the bidirectional reciprocating screw rod are of a fixed length, the top blocks can only move back and forth on the threads. When the top blocks move towards the welder, they will push the steel bars at the bottom of the blanking bin towards the welder, achieving the effect of eliminating the need for manual loading.

[0014] In one embodiment, it further includes an electric push rod and a top plate. An electric push rod is installed at the center of the top of the welding table. The middle of the bidirectional reciprocating screw rod is rotatably connected to a top plate. The bottom of the top plate is connected to the telescopic rod of the electric push rod. When the butt welding is completed, the control console will start the electric push rod. Since the telescopic rod of the electric push rod is connected to the bottom of the top plate, it will cause the top plate rotatably connected to the middle of the bidirectional reciprocating screw rod to rotate. At this time, the top of the top plate will lift the welded steel bar. Since the lifting direction corresponds to the mounting plate, the steel bar will fall between the mounting plates, achieving the effect of eliminating the need for manual unloading.

[0015] The beneficial effects of the present invention are as follows: 1. Through the installed baffle and grinding belt, when the dual-axis motor operates, the grinding belt will rotate. At this time, place the steel bar on the slider within the buffer frame. Then, pulling the steel bar back and forth left and right can remove the rust on the surface of the steel bar. Since the moving distance of the welder is fixed, when the spur gear rotates, it will just cause the baffle on the mounting frame to rotate 90 degrees, thereby being able to block the ejected sparks and high-temperature steel bar debris, achieving the effect of being able to block the ejected sparks and high-temperature steel bar debris and being able to rust-remove and grind the steel bar before welding.

[0016] 2. Through the installed dust removal box and suction nozzle, when the dust removal box is started, the dust removal box will absorb the debris generated during grinding through the suction nozzle and enter the dust removal box through the conduit, effectively preventing the debris generated during grinding of the steel bar from being scattered everywhere, thereby affecting the working environment. At the same time, the protective cover can further block the large amount of sparks generated during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0018] Figure 2 It is a three-dimensional structural schematic diagram of the welding table, welding device and mounting bracket of the present invention.

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the mounting plate, dual-axis motor and grinding belt of the present invention.

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the baffle plate, spur gear and connecting plate of the present invention.

[0021] Figure 5 It is a three-dimensional structural schematic diagram of the limiting frame and rack of the present invention.

[0022] Figure 6 It is a partially enlarged schematic diagram at position A of the present invention.

[0023] Figure 7 It is a three-dimensional structural schematic diagram of the dust removal box, conduit and suction nozzle of the present invention.

[0024] Figure 8 It is a three-dimensional structural schematic diagram of the belt module and gear set of the present invention.

[0025] Figure 9 It is a three-dimensional structural schematic diagram of the servo motor, small sprocket and large sprocket of the present invention.

[0026] Figure 10 It is a three-dimensional structural schematic diagram of the electric push rod and top plate of the present invention.

[0027] In the reference numerals: 1, base; 2, welding table; 3, welding device; 4, control console; 5, mounting plate; 6, dual-axis motor; 7, grinding belt; 71, transmission assembly; 72, buffer assembly; 8, sliding frame; 81, mounting bracket; 82, baffle plate; 83, spur gear; 84, connecting plate; 85, limiting frame; 86, rack; 87, locking assembly; 9, protective cover; 10, dust removal box; 11, conduit; 1101, suction nozzle; 12, belt module; 13, gear set; 14, support; 15, bidirectional reciprocating lead screw; 16, servo motor; 161, small sprocket; 162, large sprocket; 163, transmission chain; 17, feed hopper; 18, top block; 19, electric push rod; 20, top plate. DETAILED DESCRIPTION OF THE INVENTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] A steel bar butt welder for construction engineering, as Figures 1-6 shown, includes: a base 1, a welding table 2, a welder 3 and a control console 4. The welding table 2 is installed on the base 1, the welders 3 are installed on the welding table 2 at intervals, and the control console 4 is installed on the welding table 2. It also includes a mounting plate 5, a biaxial motor 6, a grinding belt 7, a transmission assembly 71, a buffer assembly 72, a sliding frame 8, a mounting bracket 81, a baffle 82, a spur gear 83, a connecting plate 84, a limiting bracket 85, a rack 86 and a locking assembly 87. The front side of the top of the base 1 is connected with the mounting plate 5 at intervals. The biaxial motor 6 is installed on the base 1 and corresponds to the mounting plate 5. The grinding belt 7 is rotatably connected to the rear mounting plate 5. The grinding belt 7 is connected to the right output shaft of the biaxial motor 6 through the transmission assembly 71. Buffer assemblies 72 are provided on both the left and right sides of the mounting plate 5. The front mounting plate 5 is symmetrically connected with sliding frames 8 on the left and right. The mounting bracket 81 is slidably connected to the sliding frame 8. The baffles 82 are rotatably connected to the mounting bracket 81 at intervals. The spur gear 83 is rotatably connected to the mounting bracket 81 and is connected to the end of the baffle 82. The top ends of the baffles 82 in the mounting bracket 81 are jointly connected with the connecting plate 84. The limiting bracket 85 is connected to the welder 3, and the rack 86 is connected to the end of the limiting bracket 85. The rack 86 can be meshed with the spur gear 83. The locking assembly 87 for blocking the sliding of the mounting bracket 81 is installed on the mounting plate 5.

[0030] The transmission assembly 71 is composed of a pulley and a transmission belt. A large pulley is connected to the left output shaft of the biaxial motor 6 through a coupling, a small pulley is connected to the end of the grinding belt 7, and a transmission belt is wound between the large pulley and the small pulley.

[0031] The buffer assembly 72 is composed of a buffer frame, a slider, a tension spring, a pulley, a transmission belt and a limiting plate. The buffer frames are symmetrically connected to the front side of the base 1 on the left and right. The left and right buffer frames are respectively located on the left and right sides of the mounting plate 5. There is a gap between the buffer frame and the mounting plate 5. The slider is slidably connected in the buffer frame. A tension spring is provided between the slider and the buffer frame. Pulleys are rotatably connected to the left and right sides of the rear mounting plate 5 symmetrically up and down. A transmission belt is wound between the upper and lower pulleys. The limiting plates are connected to the transmission belt at intervals.

[0032] The locking component 87 is composed of a mounting frame, a sliding block and a spring piece. The left edge of the front mounting plate 5 is connected with a mounting frame, which corresponds to the sliding frame 8. A sliding block is slidably connected in the mounting frame. The sliding block can penetrate through the sliding frame 8 and contact the mounting bracket 81. A spring piece is arranged between the sliding block and the mounting frame.

[0033] During use, first, the surface of the steel bar needs to be polished to prevent the rust on the surface of the steel bar from affecting the conductivity and resulting in poor welding effect. When starting the biaxial motor 6, a large pulley is connected to the output shaft on its left side. When the biaxial motor 6 operates, it drives the small pulley to rotate through the transmission belt, and then makes the polishing belt 7 rotate. At this time, place the steel bar on the slider in the buffer frame. Since there are limit plates on the transmission belt at the buffer frame, the limit plates can separate the polished steel bars. Through the tension spring at the bottom of the slider, the steel bar can slowly descend. During the descent of the steel bar, the staff needs to pull the steel bar back and forth left and right to polish off the rust on the surface of the steel bar. After polishing, place the steel bars on the welding machines 3 on the left and right sides respectively for welding. Then start the welding machines 3 through the console 4. At this time, the welding machines 3 on both sides will press the steel bars on both sides respectively. At this time, the staff needs to adjust the height of the mounting bracket 81 on the sliding frame 8 so that the spur gear 83 on the mounting bracket 81 corresponds to the rack 86 on the limit bracket 85. At this time, the sliding block on the mounting frame needs to be slid to the left. When the sliding block slides to the left, it will squeeze the spring piece and also make the sliding block no longer block the mounting bracket 81. After adjusting the height of the mounting bracket 81, release the sliding block. Under the action of the spring piece, when the sliding block returns to its original position, it will fix the mounting bracket 81 at this height. At this time, the rack 86 meshes with the spur gear 83. Then the console 4 will move the welding table 2 at the center of the welding machine 3. Since the limit bracket 85 on the welding machine 3 is provided with a rack 86, when the welding machine 3 moves, the spur gear 83 meshing with the rack 86 will rotate. At the same time, since the moving distance of the welding machine 3 is fixed, when the spur gear 83 rotates, it will just make the baffle 82 on the mounting bracket 81 rotate 90 degrees, so as to block the ejected sparks and high-temperature steel bar debris, achieving the effect of being able to block the ejected sparks and high-temperature steel bar debris and being able to rust and polish the steel bar before welding.

[0034] As Figure 7 shown, it further includes a protective cover 9, a dust removal box 10, a conduit 11 and a suction nozzle 1101. A protective cover 9 is installed on the welding table 2, which corresponds to the welding machine 3. The top of the protective cover 9 is connected with a dust removal box 10. A conduit 11 is hermetically connected to the air inlet of the dust removal box 10. The end of the conduit 11 extends towards the mounting plate 5. Suction nozzles 1101 are symmetrically installed on the left and right on the rear mounting plate 5. The suction nozzles 1101 are respectively located on the left and right sides of the polishing belt 7. The conduit 11 is connected to the suction nozzles 1101 on both sides.

[0035] The end of the conduit 11 is designed as a tee.

[0036] When the dust removal box 10 is started, the dust removal box 10 will absorb the debris generated during grinding through the suction nozzle 1101 and enter the dust removal box 10 through the conduit 11, effectively preventing the debris generated during grinding of the steel bars from scattering everywhere, thus affecting the working environment. At the same time, the protective cover 9 can further block a large amount of sparks generated during welding.

[0037] Such as Figure 8 As shown, it also includes a belt module 12 and a gear set 13. The belt module 12 is installed at the inner bottom between the front and rear mounting plates 5, and the end of the belt module 12 is connected to the output shaft on the right side of the double-shaft motor 6 through the gear set 13.

[0038] The gear set 13 is a worm and worm gear. A worm is connected to the output shaft on the right side of the double-shaft motor 6 through a coupling. The end of the belt module 12 passes through the rear mounting plate 5 and is connected to a worm gear. The worm gear meshes with the worm.

[0039] When the double-shaft motor 6 operates, since a worm is provided on its right output shaft, when the worm rotates, it will cause the worm gear meshing with it to rotate, and then cause the belt module 12 connected to the worm to operate. When the belt module 12 operates, when the steel bar descends to contact the belt module 12 at the inner bottom of the mounting plate 5, the belt module 12 will cause the steel bar to slide out from one side, so that it is not necessary to manually withdraw the steel bar after grinding.

[0040] Such as Figure 9 As shown, it also includes a support 14, a bidirectional reciprocating lead screw 15, a servo motor 16, a small sprocket 161, a large sprocket 162, a transmission chain 163, a feed hopper 17 and a top block 18. The front side of the welding table 2 is symmetrically connected with supports 14 on the left and right. The bidirectional reciprocating lead screw 15 is rotatably connected inside the supports 14 together. The servo motor 16 is installed at the bottom right of the welding table 2. The output shaft of the servo motor 16 passes through the welding table 2 and is connected to the small sprocket 161. The left side of the bidirectional reciprocating lead screw 15 is connected to the large sprocket 162. A transmission chain 163 is wound between the small sprocket 161 and the large sprocket 162. Feed hoppers 17 are installed at the edges on both sides of the base 1. The feed hoppers 17 correspond to the welding torch 3. The top blocks 18 are threadedly connected to both ends of the bidirectional reciprocating lead screw 15. The left and right top blocks 18 are respectively located in the left and right feed hoppers 17.

[0041] Put the steel bars to be welded into the feed hoppers 17 on the left and right sides respectively. When the servo motor 16 operates, the small sprocket 161 will rotate, and then the large chain will rotate through the transmission chain 163, driving the bi-directional reciprocating screw rod 15 to rotate. When the bi-directional reciprocating screw rod 15 rotates, the top block 18 threadedly connected to it will move towards the welding machine 3. Since the thread at the end of the bi-directional reciprocating screw rod 15 is of a fixed length, the top block 18 can only move back and forth on the thread. When the top block 18 moves towards the welding machine 3, it will push the steel bars at the bottom of the blanking bin towards the welding machine 3, achieving the effect of eliminating manual loading.

[0042] As Figure 10 shown, it also includes an electric push rod 19 and a top plate 20. The electric push rod 19 is installed at the center of the top of the welding table 2, and the middle of the bi-directional reciprocating screw rod 15 is rotatably connected to the top plate 20. The bottom of the top plate 20 is connected to the telescopic rod of the electric push rod 19.

[0043] When the butt welding is completed, the control console 4 will start the electric push rod 19. Since the telescopic rod of the electric push rod 19 is connected to the bottom of the top plate 20, the top plate 20 rotatably connected to the middle of the bi-directional reciprocating screw rod 15 will rotate. At this time, the top of the top plate 20 will lift the welded steel bars. Since the lifting direction corresponds to the mounting plate 5, the steel bars will fall between the mounting plates 5, achieving the effect of eliminating manual blanking.

[0044] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A steel bar butt welder for construction engineering, comprising: a base (1), a welding table (2), a welder (3) and a control console (4). The welding table (2) is installed on the base (1), the welder (3) is installed at intervals on the welding table (2), and the control console (4) is installed on the welding table (2). It is characterized in that: It further includes a mounting plate (5), a biaxial motor (6), a grinding belt (7), a transmission assembly (71), a buffer assembly (72), a sliding frame (8), a mounting bracket (81), a baffle (82), a spur gear (83), a connecting plate (84), a limiting bracket (85), a rack (86) and a locking assembly (87). The front side of the top of the base (1) is connected with the mounting plate (5) at intervals. The biaxial motor (6) is mounted on the base (1). The grinding belt (7) is mounted on the rear mounting plate (5). The grinding belt (7) is connected with the biaxial motor (6) through the transmission assembly (71). Buffer assemblies (72) are provided on both the left and right sides of the mounting plate (5). The front mounting plate (5) is symmetrically connected with the sliding frames (8) on the left and right. The mounting brackets (81) are slidably connected to the sliding frames (8). The baffles (82) are rotatably connected to the mounting brackets (81) at intervals. The spur gear (83) is rotatably connected to the mounting bracket (81). The spur gear (83) is connected to the end of the baffle (82). The top ends of the baffles (82) in the mounting bracket (81) are jointly connected with the connecting plate (84). The welder (3) is connected with the limiting bracket (85). The end of the limiting bracket (85) is connected with the rack (86). The rack (86) can be meshed with the spur gear (83). A locking assembly (87) for blocking the sliding of the mounting bracket (81) is mounted on the mounting plate (5).

2. The bar butt welder for construction engineering according to claim 1, characterized in that: The transmission assembly (71) is composed of a pulley and a transmission belt. A large pulley is connected to the left output shaft of the biaxial motor (6) through a coupling. A small pulley is connected to the end of the grinding belt (7). A transmission belt is wound between the large pulley and the small pulley.

3. The bar butt welder for construction engineering according to claim 2, characterized in that: The buffer assembly (72) is composed of a buffer frame, a slider, a tension spring, a pulley, a transmission belt and a limiting plate. The front side of the base (1) is symmetrically connected with the buffer frames on the left and right. The buffer frames on the left and right are respectively located on both sides of the mounting plate (5). There is a spacing between the buffer frames and the mounting plate (5). The sliders are slidably connected in the buffer frames. Tension springs are provided between the sliders and the buffer frames. Pulleys are rotatably connected to both the upper and lower sides of the left and right of the rear mounting plate (5) symmetrically. A transmission belt is wound between the upper and lower pulleys. Limiting plates are connected to the transmission belt at intervals.

4. The bar butt welding machine for construction engineering according to claim 3, characterized in that: The locking assembly (87) is composed of a mounting frame, a sliding block and a spring piece. The left edge of the front mounting plate (5) is connected with the mounting frame. The mounting frame corresponds to the sliding frame (8). The sliding block is slidably connected in the mounting frame. The sliding block can penetrate the sliding frame (8) and contact the mounting bracket (81). A spring piece is provided between the sliding block and the mounting frame.

5. The bar butt welder for construction engineering according to claim 4, characterized in that: It further includes a protective cover (9), a dust removal box (10), a conduit (11) and a suction nozzle (1101). The protective cover (9) is mounted on the welding table (2). The dust removal box (10) is mounted on the protective cover (9). The inlet of the dust removal box (10) is hermetically connected with the conduit (11). The end of the conduit (11) extends towards the mounting plate (5). Suction nozzles (1101) are mounted on both the left and right sides of the grinding belt (7). The conduit (11) is connected with the suction nozzles (1101) on both sides.

6. A steel bar butt welding machine for construction engineering according to claim 5, characterized in that: The end of the conduit (11) is designed as a tee.

7. A steel bar butt welding machine for construction engineering according to claim 6, characterized in that: It further includes a belt module (12) and a gear set (13). The belt module (12) is installed at the inner bottom between the mounting plates (5), and the belt module (12) is connected to the double-shaft motor (6) through the gear set (13).

8. A steel bar butt welding machine for construction engineering according to claim 7, characterized in that: The gear set (13) is a worm and worm gear. A worm is connected to the output shaft on the right side of the double-shaft motor (6) through a coupling. The end of the belt module (12) penetrates through the rear mounting plate (5) and is connected to a worm gear, and the worm gear meshes with the worm.

9. A steel bar butt welding machine for construction engineering according to claim 8, characterized in that: It further includes a support (14), a bidirectional reciprocating lead screw (15), a servo motor (16), a small sprocket (161), a large sprocket (162), a transmission chain (163), a feed hopper (17) and a top block (18). Supports (14) are symmetrically connected to the left and right on the front side of the welding table (2). The bidirectional reciprocating lead screw (15) is rotatably connected within the supports (14). A servo motor (16) is installed at the bottom right of the welding table (2). The output shaft of the servo motor (16) penetrates through the welding table (2) and is connected to the small sprocket (161). The left side of the bidirectional reciprocating lead screw (15) is connected to the large sprocket (162). A transmission chain (163) is wound between the small sprocket (161) and the large sprocket (162). Feed hoppers (17) are installed at the edges on both the left and right sides of the base (1). The feed hoppers (17) correspond to the welding torch (3). Top blocks (18) are threadedly connected to both the left and right ends of the bidirectional reciprocating lead screw (15). The left and right top blocks (18) are respectively located within the left and right feed hoppers (17), and the top blocks (18) can move on the bidirectional reciprocating lead screw (15).

10. A steel bar butt welding machine for construction engineering according to claim 9, characterized in that: It further includes an electric push rod (19) and a top plate (20). An electric push rod (19) is installed at the center of the top of the welding table (2). The middle of the bidirectional reciprocating lead screw (15) is rotatably connected to the top plate (20), and the bottom of the top plate (20) is connected to the telescopic rod of the electric push rod (19).

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