A processing line and processing method for small-diameter steel cages in construction projects

Abstract

The present invention discloses a processing line for small-pile-diameter steel cages in construction engineering, including a skeleton steel preparation rack, a roll welding device, a semi-finished product placement rack, a surrounding steel preparation rack, a pre-straightening mechanism, a straightening machine, and a feeding reel loading mechanism, wherein: the feed end and the discharge end of the roll welding device are respectively connected to the skeleton steel preparation rack and the semi-finished product placement rack; the roll welding device welds the surrounding steel bars in a spiral shape to a plurality of skeleton steel bars to form a steel cage, and the central axes of the plurality of skeleton steel bars are parallel to each other and are arranged in a uniform circular array; the surrounding steel bars start from the surrounding steel preparation rack and pass through the pre-straightening mechanism and the straightening machine in sequence, and are used by the roll welding device after reaching the feeding reel loading mechanism. Beneficial effects: reasonable structure, convenient use, high work efficiency, firm welding, low dimensional error, and can realize the processing of steel cages with different densities, greatly reducing production costs and saving production time.

Description

Technical Field

[0001] The invention relates to the field of machinery, and in particular to a processing line and a processing method of a small-diameter steel bar cage for a construction project. Background Art

[0002] The main role of the steel cage is the same as the stress of the longitudinal steel bars of the column. It mainly plays a tensile role. The compressive strength of concrete is high but the tensile strength is very low. It plays a restraining role on the pile concrete so that it can withstand a certain axial tension. When constructing bridges, culverts or high-rise buildings, the foundation may be required to be piled according to requirements. The method is to use machine punching and water drilling, and the hole depth meets the design requirements, and then put the steel cage into the pile hole, and then insert the guide tube for concrete pouring.

[0003] For the processing of steel cages, manual welding is often used, which not only has a large workload and low processing efficiency, but also has problems such as loose welding and dimensional deviation. The existing rolling welding machine can only realize the relative movement of the skeleton steel bars and the surrounding steel bars, and then perform manual fixed-point welding. There are still problems such as loose welding and leaking welding, which cannot meet the needs of actual production. Summary of the invention

[0004] The purpose of the present invention is to provide a processing line and a processing method for small pile diameter steel cages in construction projects which have a reasonable structure, are easy to use, have high work efficiency, are firmly welded, have low dimensional error, and can realize the processing of steel cages of different densities, thereby greatly reducing production costs and saving production time.

[0005] The present invention is achieved through the following technical solutions:

[0006] The invention discloses a processing line for a small-pile-diameter steel bar cage for a construction project, comprising a skeleton steel bar preparation rack, a roll welding device, a semi-finished product placement rack, a surrounding steel bar preparation rack, a pre-straightening mechanism, a straightening machine, and a feeding reel loading mechanism, wherein: the feeding end and the discharging end of the roll welding device are respectively connected to the skeleton steel bar preparation rack and the semi-finished product placement rack; the roll welding device welds the surrounding steel bars in a spiral shape to a plurality of skeleton steel bars to form a steel bar cage, wherein the central axes of the plurality of skeleton steel bars are parallel to each other and are arranged in a uniform circular array; the surrounding steel bars pass through the pre-straightening mechanism and the straightening machine in sequence from the surrounding steel bar preparation rack, and are provided to the roll welding device after reaching the feeding reel loading mechanism.

[0007] Preferably, the above-mentioned rolling welding device includes a stator mechanism, a rotor mechanism and a supporting mechanism; the above-mentioned supporting mechanism includes a welding supporting frame and a feeding supporting frame, which are respectively a plate with a through hole at the center, and the two are arranged opposite to each other in a mirror-symmetrical manner; the above-mentioned rotor mechanism is movably connected to the through hole position of the welding supporting frame, and is coaxially arranged with the through hole; the above-mentioned stator mechanism passes through the through hole of the welding supporting frame and the rotor mechanism, and is coaxially arranged with the through hole of the welding supporting frame; a material transfer mechanism is provided at the through hole of the above-mentioned supporting mechanism, and a feeding reel is equipped and connected to the material transfer mechanism, and the feeding reel is located between the welding supporting frame and the feeding supporting frame. ; A material extraction mechanism is arranged at the direction away from the welding support frame by the above-mentioned feeding support frame; the above-mentioned stator mechanism and the rotor mechanism are electrically connected to the positive and negative poles of the power supply respectively; a skeleton steel bar is movably connected to the above-mentioned stator mechanism, and one end of the skeleton steel bar is detachably fixedly connected to the material extraction mechanism, and a surrounding steel bar is placed on the feeding reel, and the surrounding steel bar is assembled and connected to the rotor mechanism; the above-mentioned stator mechanism includes a stator disk, a conductive column, a stator conductive sheet, a feed tray and a stator housing; the above-mentioned conductive column is a cylinder, and the two ends of the cylinder are coaxially fixedly connected to the stator disk and the feed tray respectively; the above-mentioned stator disk is a disk with a plurality of arc-shaped grooves arranged on the outer circumference The stator plate has a plurality of grooves arranged in a uniform circular array along the central axis of the stator plate, and the central axis of the grooves is arranged in parallel with the central axis of the stator plate; one end of the stator conductive sheet is connected to the conductive column, and the other end is connected to an electrode of the power supply; the feed tray is a disc body with six through holes arranged on the end surface, and the six through holes are arranged in a uniform circular array along the central axis of the feed tray; six skeleton steel bars are provided, which pass through the six through holes of the feed tray and then through the grooves of the stator plate to be fixedly and detachably connected to the material extraction mechanism; the conductive column is fixedly connected to the inside of the stator housing; the conductive column and the through hole of the welding support frame are coaxially arranged; The rotor mechanism includes a rotor disk, a rotor gear ring, a feed frame, a welding seat and a rotor conductive sheet; the rotor disk is a circular ring body, one side of its end face is coaxially fixedly connected to the rotor gear ring, and the other side is fixedly connected to the feed frame and the welding seat; the rear of the rotor gear ring is connected to a rotor electric ring, and the rotor electric ring is electrically connected to an electrode of a power supply; the rotor conductive sheet is fixedly connected to the welding seat and the rotor electric ring respectively; the surrounding steel bars pass from the feed reel through the feed frame to the welding seat, and contact with the six skeleton steel bars in turn under the rotational movement of the rotor mechanism, and the welding is completed by using electric current under the joint action of the welding seat and the stator mechanism.

[0008] Preferably, the above-mentioned skeleton steel bar preparation rack includes a placement rack, a cutting rack, a gear bar and a roller; the above-mentioned placement rack and the cutting rack are respectively a rectangular frame, the two have the same height, and are fixedly connected in parallel along a long side; the above-mentioned placement rack is vertically fixedly connected with a plurality of gear bars on the long side away from the cutting rack; the plurality of gear bars are located directly above the placement rack and are arranged in a uniform linear array; a plurality of rollers are provided at the upper end of the above-mentioned cutting rack, and the plurality of rollers are arranged in a uniform linear array, and the central axis of the rollers is arranged perpendicularly to the long side of the cutting rack; the above-mentioned semi-finished product placement rack is composed of a plurality of steel beams with legs, and the plurality of steel beams are vertically fixedly connected to the guide frame and are arranged in a uniform linear array.

[0009] Preferably, the above-mentioned surrounding steel bar preparation rack includes a surrounding steel bar base frame, an inclined plate, an inclined rod and a baffle; the above-mentioned surrounding steel bar base frame is a rectangular frame; the upper part of the above-mentioned surrounding steel bar base frame is fixedly connected with an inclined plate, and the angle between the inclined plate and the plane where the surrounding steel bar base frame is located is an obtuse angle; the above-mentioned inclined plate is vertically fixedly connected with an inclined rod; a plurality of baffles are arranged on the end of the above-mentioned inclined rod away from the inclined plate; the above-mentioned baffle is in the shape of a right triangle, and it is located directly above the inclined rod; the above-mentioned pre-straightening mechanism includes a pre-straightening feed head, a protective cage and a pre-straightening chassis; the pre-straightening feed head includes a shell and a feed roller group, two feed roller groups are provided, which are assembled and connected inside the shell, and the feed roller group consists of two vertical rollers and two horizontal rollers, and the horizontal rollers and the vertical rollers are arranged vertically in a front-to-back cross shape; the pre-straightening feed head is fixedly connected to the protective cage, which is made of steel bars and has a truncated cone shape; the pre-straightening feed head is fixedly connected to one end of the protective cage where the truncated cone is a small circle; the protective cage is fixedly connected to the top of the pre-straightening chassis.

[0010] Preferably, the straightening machine comprises a straightening machine body, a longitudinal straightening mechanism and a transverse straightening mechanism; the longitudinal straightening mechanism and the transverse straightening mechanism are equipped and connected above the straightening machine body; the longitudinal straightening mechanism and the transverse straightening mechanism are respectively provided with five straightening wheels, and the five straightening wheels are arranged alternately in the form of two on top and three on the bottom, and grooves are provided on the circumference of the straightening wheels for the surrounding steel bars to pass through; the straightening wheels of the longitudinal straightening mechanism and the transverse straightening mechanism are arranged vertically and are driven to rotate by the straightening machine body.

[0011] Preferably, the feeding reel loading mechanism comprises a reel loading and feeding head, a reel driving turntable, a driving turntable rotating seat and a driving turntable power mechanism; the center position of the reel driving turntable is rotatably connected to the driving turntable rotating seat, and the driving turntable power mechanism provides power to the driving turntable rotating seat to rotate; a reel loading and feeding head is arranged at one side position of the circumference of the reel driving turntable; two feeding reels are arranged, which are detachably mounted on the feeding reel fixing part and the reel driving turntable, respectively, and the surrounding steel bars are output at the feeding reel fixing part and the surrounding steel bars are input at the reel driving turntable, and they are alternately mounted on the feeding reel fixing part and the reel driving turntable.

[0012] Preferably, the rotor gear ring is connected to a gear through a chain, the gear is coaxially fixedly connected to the output shaft of the gearbox, the input shaft of the gearbox is connected to the output shaft of a motor, and the stator housing is fixedly connected to the top of the gearbox housing; the material transfer mechanism includes a feed reel fixing part and a material transfer power mechanism; the material transfer power mechanism drives the feed reel fixing part to rotate about the central axis of the central axis of the through hole of the feed support frame; the feed reel fixing part is a circular ring body, which is coaxially detachably fixedly connected to the feed reel; the material transfer power mechanism includes a gear ring, a chain, a gear and a motor, the gear ring is coaxially fixedly connected to the feed reel fixing part, the chain is connected to the gear and the gear ring, and the gear is coaxially fixedly connected to the output shaft of the motor; the material pulling mechanism includes a clamping disk and a power rod; the clamping disk includes a movable disk and a fixed disk , jaws and cartridge; the movable disk, fixed disk and power rod are all coaxially arranged, the movable disk is fixedly connected to the power rod, and moves axially under the drive of the power rod; six cartridges are vertically fixedly connected to the end surface of the movable disk, and the six cartridges are arranged in a uniform circular array; six jaws are vertically fixedly connected to the end surface of the fixed disk, and the jaws and cartridges are plugged into the inside of the cartridge one by one; the jaws are in the shape of an inverted frustum, and the diameter of the opening at the end where the cartridge is connected to the jaws is smaller than the diameter of the large end circle of the jaws; the power rod is assembled and fixedly connected to the output end of the cylinder; the pulling mechanism is fixedly connected to the sliding trolley, and a guide frame is provided below the sliding trolley. The sliding trolley can make a linear motion along the guide frame, and the direction of motion is parallel to the central axis of the through hole of the welding support frame; a number of lifting support mechanisms are provided below the guide frame.

[0013] Preferably, the above-mentioned material guide frame is made of a plate material, and its edge profile is a section of variable diameter spiral line, one end of which is close to the feeding reel and the other end is close to the welding seat, and a number of annular bodies are arranged on its surface, and the steel bars are passed through the several annular bodies in sequence; the above-mentioned rotor electric ring includes a conductive ring, a semicircular conductive sheet, a conductive block and an electric ring conductive sheet; the above-mentioned conductive ring is coaxially arranged with the rotor gear ring, and its inner ring wall is slidingly and frictionally connected with the stator conductive sheet; a semicircular conductive sheet is coaxially arranged above the above-mentioned conductive ring, and a number of conductive blocks are fixedly connected between the semicircular conductive sheet and the conductive ring; one end of the above-mentioned electric ring conductive sheet is fixedly connected to the semicircular conductive sheet, and the other end is electrically connected to an electrode of the power supply; the above-mentioned sliding trolley includes a car body, a running wheel and a trolley power mechanism, the car body is fixedly connected to the power rod, the running wheel and the trolley power mechanism are assembled and connected, the trolley power mechanism is composed of a sprocket, a chain and a motor, the sprocket is coaxially fixedly connected to the running wheel, and the running wheel is clamped on the guide frame; the above-mentioned lifting support mechanism is a pneumatic scissor-type lifting platform.

[0014] Preferably, the above-mentioned reel loading and feeding head includes a linear bearing seat, a feed ring and a guide rod; the above-mentioned reel driving turntable includes a rotating disk and a fixed part; the above-mentioned driving turntable power mechanism includes a motor and a gearbox; the above-mentioned linear bearing seat is fitted and connected to the guide rod, and a feed ring is fixedly connected to the top of the linear bearing seat, and the surrounding steel bar passes through the feed ring and is wound around the feeding reel, and the feeding reel is detachably fixedly connected to the fixed part of the reel driving turntable; the two sides of the above-mentioned rotating disk are respectively connected to the fixed part and the driving turntable rotating seat; the output shaft of the motor of the above-mentioned driving turntable power mechanism is fitted and connected to the input shaft of the gearbox, and the output shaft of the gearbox is fitted and connected to the rotating disk of the reel driving turntable to drive it to rotate, and the output shaft of the gearbox is fitted and connected to the guide rod of the reel loading and feeding head to drive it to rotate.

[0015] A processing method for the processing line of the above-mentioned small-diameter steel bar cage for construction engineering comprises the following steps:

[0016] S1: Preparing skeleton steel bars: cutting a number of skeleton steel bars into preset lengths on a cutting rack, and then placing them on a placement rack for standby use;

[0017] S2: Preparing the surrounding steel bars, hanging the surrounding steel bars in a coil on the surrounding steel bar preparation rack, and then passing the surrounding steel bar coil through the pre-straightening mechanism, and then straightening it through the straightening machine to reach the feeding reel loading mechanism, and the feeding reel loading mechanism winds the surrounding steel bars on the first feeding reel, then removes the feeding reel, replaces it with the second feeding reel, and repeats the above steps for standby;

[0018] S3: End fixed-point welding: insert six skeleton steel bars into the roll welding device, assemble the feeding reel with surrounding steel bars on the roll welding device, insert the surrounding steel bars into the guide frame, and then manually weld the first welding point;

[0019] S4: Automatic roll welding, the roll welding device is turned on for automatic welding, the stator mechanism and the rotor mechanism weld the surrounding steel bars to the skeleton steel bars, and the moving speed of the pull-out mechanism determines the pitch of the surrounding steel bars on the skeleton steel bars. Until the pull-out mechanism moves to the preset position, an automatic roll welding operation is completed to obtain a semi-finished steel cage;

[0020] S5: Alternate the feeding reels, remove the feeding reel that has finished outputting the steel bars in step 4, alternate with the feeding reel on the feeding reel loading mechanism, and repeat step 4;

[0021] S6: end bending and welding, taking the semi-finished steel cage in step 4 from the roll welding device, placing it on the semi-finished product placement rack, and then manually bending one end of the semi-finished steel cage into a cone, and manually welding it, completing the welding operation, and obtaining a finished steel cage;

[0022] S7: Store for future use.

[0023] The beneficial effects of the present invention are: reasonable structure, convenient use, high work efficiency, firm welding, low dimensional error, and the ability to process steel cages of different densities, greatly reducing production costs and saving production time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 : A schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 : A top view of the present invention;

[0026] Figure 3 : A schematic diagram of the three-dimensional structure of the skeleton steel bar preparation rack of the present invention;

[0027] Figure 4 : A first three-dimensional structural schematic diagram of the seam welding device of the present invention;

[0028] Figure 5 : A second three-dimensional structural schematic diagram of the seam welding device of the present invention;

[0029] Figure 6 : A third three-dimensional structural schematic diagram of the seam welding device of the present invention;

[0030] Figure 7 : A three-dimensional structural diagram of the stator mechanism of the present invention;

[0031] Figure 8 : A schematic diagram of the three-dimensional structure of the stator housing of the present invention;

[0032] Fig. 9 : A three-dimensional structural diagram of the rotor mechanism of the present invention;

[0033] Fig.10: Another three-dimensional structural schematic diagram of the rotor mechanism of the present invention;

[0034] Fig.11 : A schematic diagram of the three-dimensional structure of the material pulling mechanism of the present invention;

[0035] Fig.12 : A schematic diagram of the three-dimensional structure of the rotor electric ring of the present invention;

[0036] Fig.13 : A schematic diagram of the three-dimensional structure of the steel bar preparation rack of the present invention;

[0037] Fig.14 : A three-dimensional structural schematic diagram of the pre-straightening mechanism of the present invention;

[0038] Fig.15 : A schematic diagram of the three-dimensional structure of the straightening machine of the present invention;

[0039] Fig.16 : A three-dimensional structural diagram of the feeding reel feeding mechanism of the present invention;

[0040] Fig.17 : A schematic diagram of the three-dimensional structure of the reel-driven turntable of the present invention;

[0041] Fig.18 : Another three-dimensional structural schematic diagram of the reel-driven turntable of the present invention;

[0042] Fig.19 : Reference diagram of the use state of the feeding reel feeding mechanism of the present invention;

[0043] In the figure: 1 skeleton steel bar preparation rack, 2 rolling welding device, 3 semi-finished product placement rack, 4 surrounding steel bar preparation rack, 5 pre-straightening mechanism, 6 straightening machine, 7 feeding reel loading mechanism, 1-1 placement rack, 1-2 cutting rack, 1-3 gear lever, 1-4 roller, 2-1 stator mechanism, 2-2 rotor mechanism, 2-3 support mechanism, 2-4 feeding reel, 2-5 material transfer mechanism, 2-6 pulling mechanism, 2-7 sliding trolley, 2-8 guide frame, 2-9 lifting support mechanism, 2-10 rotor electric ring, 2-11 stator disk, 2-12 conductive column, 2-13 stator conductive sheet, 2-14 feeding tray, 2-15 stator housing, 2-21 rotor disk, 2-22 rotor gear ring, 2-23 guide rack, 2-24 welding seat, 2-25 rotor conductive sheet, 2-31 welding support frame, 2-32 feeding support frame, 2-51 material transfer power mechanism, 2-52 feeding reel fixing part, 61 clamping disk, 62 power rod, 611 movable disk, 612 fixed disk, 613 clamping claw, 614 cartridge, 2-101 conductive ring, 2-102 semicircular conductive sheet, 2-103 conductive block, 2-104 electric ring conductive sheet, 4-1 surrounding steel bar base frame, 4-2 inclined plate, 4-3 inclined rod, 4-4 baffle, 5-1 pre-straightening feed head, 5-2 protective cage, 5-3 pre-straightening base, 6-1 straightening machine body, 6-2 longitudinal straightening mechanism, 6-3 transverse straightening mechanism, 7-1 reel feeding feed head, 7-2 reel drive turntable, 7-3 drive turntable rotating seat, 7-4 drive turntable power mechanism. DETAILED DESCRIPTION

[0044] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0045] like Figure 1-19As shown, a processing line for a small-diameter steel bar cage for a construction project comprises a skeleton steel bar preparation rack 1, a roll welding device 2, a semi-finished product placement rack 3, a surrounding steel bar preparation rack 4, a pre-straightening mechanism 5, a straightening machine 6, and a feeding reel loading mechanism 7, wherein: the feeding end and the discharging end of the roll welding device 2 are respectively connected to the skeleton steel bar preparation rack 1 and the semi-finished product placement rack 3; the roll welding device 2 welds the surrounding steel bars in a spiral shape to a plurality of skeleton steel bars to form a steel bar cage, wherein the central axes of the plurality of skeleton steel bars are parallel to each other and are arranged in a uniform circular array; the surrounding steel bars start from the surrounding steel bar preparation rack 4 and sequentially pass through the pre-straightening mechanism 5 and the straightening machine 6, and are provided to the roll welding device 2 after reaching the feeding reel loading mechanism 7; wherein: the roll welding device 2 comprises a stator Mechanism 2-1, rotor mechanism 2-2 and support mechanism 2-3; the support mechanism 2-3 includes a welding support frame 2-31 and a feeding support frame 2-32, which are respectively plates with a through hole at the center, and the two are arranged opposite to each other in a mirror-symmetrical manner; the rotor mechanism 2-2 is movably connected at the through hole position of the welding support frame 2-31, and is coaxially arranged with the through hole; the stator mechanism 2-1 passes through the through hole of the welding support frame 2-31 and the rotor mechanism 2-2, and is coaxially arranged with the through hole of the welding support frame 2-31; a material transfer mechanism 2-5 is arranged at the through hole of the support mechanism 2-3, and a feeding reel 2-4 is mounted and connected to the material transfer mechanism 2-5, and the feeding reel 2-4 is located between the welding support frame 2-31 and the feeding support frame 2-32 The feeding support frame 2-32 is provided with a material pulling mechanism 2-6 in a direction away from the welding support frame 2-31; the stator mechanism 2-1 and the rotor mechanism 2-2 are respectively electrically connected to the positive and negative poles of the power supply; the stator mechanism 2-1 is movably connected with a skeleton steel bar, and one end of the skeleton steel bar is detachably fixedly connected to the material pulling mechanism 2-6, and a surrounding steel bar is placed on the feeding reel 2-4, and the surrounding steel bar is assembled and connected to the rotor mechanism 2-2; the stator mechanism 2-1 includes a stator disk 2-11, a conductive column 2-12, a stator conductive sheet 2-13, a feed tray 2-14 and a stator housing 2-15; the conductive column 2-12 is a cylinder, and its two ends are respectively coaxially fixedly connected with the stator disk 2-11 and the feed tray 2-14; The stator disk 2-11 is a disk body with a plurality of arc-shaped grooves on the outer circumference, and the plurality of grooves are arranged in a uniform circular array along the central axis of the stator disk 2-11, and the central axis of the grooves is arranged in parallel with the central axis of the stator disk 2-11; one end of the stator conductive sheet 2-13 is connected to the conductive column 2-12, and the other end is connected to an electrode of the power supply; the feed tray 2-14 is a disk body with six through holes on the end face, and the six through holes are arranged in a uniform circular array along the central axis of the feed tray 2-14, and six skeleton steel bars are provided, which pass through the six through holes of the feed tray 2-14 and then through the grooves of the stator disk 2-11 to be fixedly and detachably connected to the pulling mechanism 2-6; the conductive column 2-12 is fixedly connected to the inside of the stator housing 2-15;The conductive column 2-12 is coaxially arranged with the through hole of the welding support frame 2-31; the rotor mechanism 2-2 comprises a rotor disk 2-21, a rotor gear ring 2-22, a material guide frame 2-23, a welding seat 2-24 and a rotor conductive sheet 2-25; the rotor disk 2-21 is a circular ring body, one side of the end face of which is coaxially fixedly connected to the rotor gear ring 2-22, and the other side is fixedly connected to the material guide frame 2-23 and the welding seat 2-24; the rear of the rotor gear ring 2-22 is connected There is a rotor electric ring 2-10, which is electrically connected to an electrode of the power supply; the rotor conductive sheet 2-25 is fixedly connected to the welding seat 2-24 and the rotor electric ring 2-10 respectively; the surrounding steel bar passes through the guide frame 2-23 from the feeding reel 2-4 to the welding seat 2-24, and contacts with the six skeleton steel bars in turn under the rotation of the rotor mechanism 2-2, and completes the welding by using the current under the joint action of the welding seat 2-24 and the stator mechanism 2-1. ;

[0046] The above-mentioned skeleton steel bar preparation rack 1 includes a placing rack 1-1, a cutting rack 1-2, a lever 1-3 and a roller 1-4; the above-mentioned placing rack 1-1 and the cutting rack 1-2 are respectively a rectangular frame, the height of the two are the same, and they are fixedly connected in parallel along one long side; the above-mentioned placing rack 1-1 is vertically fixedly connected to a long side away from the cutting rack 1-2; the above-mentioned levers 1-3 are located directly above the placing rack 1-1 and are arranged in a uniform linear array; the above-mentioned cutting rack 1-2 is provided with a plurality of rollers 1- 4, a plurality of rollers 1-4 are arranged in a uniform linear array, and the central axis of the rollers 1-4 is arranged perpendicularly to the long side of the truncation frame 1-2; the semi-finished product placement frame 3 is composed of a plurality of steel beams with legs, and the plurality of steel beams are vertically fixedly connected to the guide frame 2-8 and arranged in a uniform linear array; the surrounding steel bar preparation frame 4 includes a surrounding steel bar bottom frame 4-1, an inclined plate 4-2, an inclined rod 4-3 and a baffle 4-4; the surrounding steel bar bottom frame 4-1 is a rectangular frame; the upper part of the surrounding steel bar bottom frame 4-1 is fixedly connected with an inclined The angle between the inclined plate 4-2 and the plane where the steel bar base frame 4-1 is located is an obtuse angle; the inclined plate 4-2 is vertically fixedly connected with an inclined rod 4-3; the inclined rod 4-3 is provided with a plurality of baffles 4-4 at one end away from the inclined plate 4-2; the baffles 4-4 are in the shape of a right triangle and are located directly above the inclined rod 4-3; the pre-straightening mechanism 5 includes a pre-straightening feed head 5-1, a protective cage 5-2 and a pre-straightening base frame 5-3; the pre-straightening feed head 5-1 includes a shell and a feed The feed roller group includes two feed roller groups, which are assembled and connected inside the shell. The feed roller group consists of two vertical rollers and two horizontal rollers. The horizontal rollers and the vertical rollers are arranged vertically in a front-to-back cross shape. The above-mentioned pre-straightening feed head 5-1 is fixedly connected to the protective cage 5-2. The protective cage 5-2 is made of steel bars and has a truncated cone shape. The above-mentioned pre-straightening feed head 5-1 is fixedly connected to one end of the protective cage 5-2 where the truncated cone is a small circle. The above-mentioned protective cage 5-2 is fixedly connected to the top of the pre-straightening base frame 5-3.

[0047] Wherein: the straightening machine 6 comprises a straightening machine body 6-1, a longitudinal straightening mechanism 6-2 and a transverse straightening mechanism 6-3; the longitudinal straightening mechanism 6-2 and the transverse straightening mechanism 6-3 are connected to the upper part of the straightening machine body 6-1; the longitudinal straightening mechanism 6-2 and the transverse straightening mechanism 6-3 are respectively provided with five straightening wheels, the five straightening wheels are arranged in a staggered manner of two on the upper and three on the lower, and grooves are provided on the circumference of the straightening wheels for the surrounding steel bars to pass through; the straightening wheels of the longitudinal straightening mechanism 6-2 and the transverse straightening mechanism 6-3 are arranged vertically and are driven to rotate by the straightening machine body 6-1; the feeding reel loading mechanism 7 comprises a reel loading feeding head 7-1, a reel driving turntable 7-2, a driving turntable rotating seat 7-3 and a driving The turntable power mechanism 7-4; the center position of the above-mentioned reel driving turntable 7-2 is rotatably connected to the driving turntable rotating seat 7-3, and the driving turntable power mechanism 7-4 provides power for the driving turntable rotating seat 7-3 to rotate; a reel feeding head 7-1 is arranged at one side position of the circumference of the above-mentioned reel driving turntable 7-2; the above-mentioned feeding reel 2-4 is provided with two, which can be detachably mounted on the feeding reel fixing part 2-52 and the reel driving turntable 7-2 respectively, the surrounding steel bars are output at the feeding reel fixing part 2-52, and the surrounding steel bars are input at the reel driving turntable 7-2, and they are alternately mounted on the feeding reel fixing part 2-52 and the reel driving turntable 7-2; the above-mentioned rotor gear ring 2-22 is connected to a gear through a chain The wheel is assembled and connected, the gear is coaxially fixedly connected to the output shaft of the gearbox, the input shaft of the gearbox is assembled and connected to the output shaft of a motor, and the stator housing 2-15 is fixedly connected to the top of the gearbox housing; the above-mentioned material transfer mechanism 2-5 includes a feeding reel fixing part 2-52 and a material transfer power mechanism 2-51; the above-mentioned material transfer power mechanism 2-51 drives the feeding reel fixing part 2-52 to rotate with the central axis of the central axis of the through hole of the feeding support frame 2-32; the above-mentioned feeding reel fixing part 2-52 is a circular ring body, which is coaxially detachably fixedly connected with the feeding reel 2-4; the above-mentioned material transfer power mechanism 2-51 includes a gear ring, a chain, a gear and a motor, the gear ring is coaxially fixedly connected to the feeding reel fixing part 2-52, the chain and the gear and the gear are connected to the feeding reel fixing part 2-52. The gear is connected with the output shaft of the motor through a coaxial connection; the above-mentioned material extraction mechanism 2-6 includes a clamping disc 61 and a power rod 62; the above-mentioned clamping disc 61 includes a movable disc 611, a fixed disc 612, a clamping claw 613 and a cartridge 614; the above-mentioned movable disc 611, the fixed disc 612 and the power rod 62 are all coaxially arranged, the movable disc 611 is fixedly connected with the power rod 62, and moves axially under the drive of the power rod 62; six cartridges 614 are vertically fixedly connected to the end surface of the above-mentioned movable disc 611, and the six cartridges 614 are arranged in a uniform circular array; six clamping claws 613 are vertically fixedly connected to the end surface of the above-mentioned fixed disc 612, and the clamping claws 613 and the cartridges 614 are plugged into the inside of the cartridge 614 one by one;The clamping jaw 613 is in the shape of an inverted truncated cone, and the diameter of the opening at the end where the cartridge 614 is connected to the clamping jaw 613 is smaller than the diameter of the large end face circle of the clamping jaw 613; the power rod 62 is fixedly connected to the output end of the cylinder; the pulling mechanism 2-6 is fixedly connected to the sliding trolley 2-7, and a guide frame 2-8 is arranged below the sliding trolley 2-7. The sliding trolley 2-7 can move linearly along the guide frame 2-8, and the direction of movement is parallel to the central axis of the through hole of the welding support frame 2-31; a plurality of lifting support mechanisms 2-9 are arranged below the guide frame 2-8. ;

[0048] Among them: the above-mentioned guide frame 2-23 is made of plate material, and its edge profile is a section of variable diameter spiral line, one end is close to the feeding reel 2-4, and the other end is close to the welding seat 2-24, and a number of annular bodies are arranged on its surface, and the surrounding steel bars pass through the several annular bodies in sequence; the above-mentioned rotor electric ring 2-10 includes a conductive ring 2-101, a semicircular conductive sheet 2-102, a conductive block 2-103 and an electric ring conductive sheet 2-104; the above-mentioned conductive ring 2-101 is coaxially arranged with the rotor gear ring 2-22, and its inner ring wall is connected to the stator conductive The sheet 2-13 is connected by sliding friction; a semicircular conductive sheet 2-102 is coaxially arranged above the conductive ring 2-101, and a plurality of conductive blocks 2-103 are fixedly connected between the semicircular conductive sheet 2-102 and the conductive ring 2-101; one end of the conductive sheet 2-104 of the electric ring is fixedly connected to the semicircular conductive sheet 2-102, and the other end is electrically connected to an electrode of the power supply; the sliding trolley 2-7 includes a trolley body, running wheels and a trolley power mechanism, the trolley body is fixedly connected to the power rod 62, and the running wheels and the trolley power mechanism are equipped with The trolley power mechanism is composed of a sprocket, a chain and a motor. The sprocket is coaxially fixedly connected to the walking wheel, and the walking wheel is clamped on the guide frame 2-8; the lifting support mechanism 2-9 is a pneumatic scissor-type lifting platform; the reel feeding head 7-1 includes a linear bearing seat, a feeding ring and a guide rod; the reel driving turntable 7-2 includes a rotating disk and a fixing part; the driving turntable power mechanism 7-4 includes a motor and a gearbox; the linear bearing seat is equipped and connected to the guide rod, and a feeding ring is fixedly connected above the linear bearing seat, surrounding the steel After passing through the feed ring, the rib is wound around the feed reel 2-4, and the feed reel 2-4 is detachably fixedly connected to the fixing part of the reel driving turntable 7-2; the two sides of the above-mentioned rotating disk are respectively connected to the fixing part and the driving turntable rotating seat 7-3; the output shaft of the motor of the above-mentioned driving turntable power mechanism 7-4 is assembled and connected with the input shaft of the gearbox, and the output shaft of the gearbox is assembled and connected with the rotating disk of the reel driving turntable 7-2 to drive it to rotate, and the output shaft of the gearbox is assembled and connected with the guide rod of the reel loading and feeding head 7-1 to drive it to rotate.

[0049] The processing method using the above-mentioned processing line of a small-diameter steel cage for construction engineering comprises the following steps:

[0050] S1: Preparing skeleton steel bars: cutting a number of skeleton steel bars into preset lengths on a cutting rack, and then placing them on a placement rack for standby use;

[0051] S2: Preparing the surrounding steel bars, hanging the surrounding steel bars in a coil on the surrounding steel bar preparation rack, and then passing the surrounding steel bar coil through the pre-straightening mechanism, and then straightening it through the straightening machine to reach the feeding reel loading mechanism, and the feeding reel loading mechanism winds the surrounding steel bars on the first feeding reel, then removes the feeding reel, replaces it with the second feeding reel, and repeats the above steps for standby;

[0052] S3: End fixed-point welding: insert six skeleton steel bars into the roll welding device, assemble the feeding reel with surrounding steel bars on the roll welding device, insert the surrounding steel bars into the guide frame, and then manually weld the first welding point;

[0053] S4: Automatic roll welding, the roll welding device is turned on for automatic welding, the stator mechanism and the rotor mechanism weld the surrounding steel bars to the skeleton steel bars, and the moving speed of the pull-out mechanism determines the pitch of the surrounding steel bars on the skeleton steel bars. Until the pull-out mechanism moves to the preset position, an automatic roll welding operation is completed to obtain a semi-finished steel cage;

[0054] S5: Alternate the feeding reels, remove the feeding reel that has finished outputting the steel bars in step 4, alternate with the feeding reel on the feeding reel loading mechanism, and repeat step 4;

[0055] S6: end bending and welding, taking the semi-finished steel cage in step 4 from the roll welding device, placing it on the semi-finished product placement rack, and then manually bending one end of the semi-finished steel cage into a cone, and manually welding it, completing the welding operation, and obtaining a finished steel cage;

[0056] S7: Store for future use.

[0057] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A processing line for small-diameter steel cages for construction engineering, comprising a skeleton steel bar preparation rack (1), a roll welding device (2), a semi-finished product placement rack (3), a surrounding steel bar preparation rack (4), a pre-straightening mechanism (5), a straightening machine (6), and a feeding reel loading mechanism (7), characterized in that: The feed end and the discharge end of the roll welding device (2) are respectively connected to the skeleton steel bar preparation rack (1) and the semi-finished product placement rack (3); the roll welding device (2) welds the surrounding steel bars to a plurality of skeleton steel bars in a spiral shape to form a steel bar cage, wherein the central axes of the plurality of skeleton steel bars are parallel to each other and are arranged in a uniform circular array; the surrounding steel bars start from the surrounding steel bar preparation rack (4) and sequentially pass through the pre-straightening mechanism (5) and the straightening machine (6), and then reach the feeding reel loading mechanism (7) for use by the roll welding device (2); The roll welding device (2) comprises a stator mechanism (2-1), a rotor mechanism (2-2) and a support mechanism (2-3); the support mechanism (2-3) comprises a welding support frame (2-31) and a feeding support frame (2-32), each of which is a plate with a through hole at the center, and the two are arranged opposite to each other in a mirror-symmetrical manner; the rotor mechanism (2-2) is movably connected to the through hole of the welding support frame (2-31) and is coaxially arranged with the through hole; the stator mechanism (2-1) passes through the through hole of the welding support frame (2-31) and the rotor mechanism (2-2), and is coaxially arranged with the through hole of the welding support frame (2-31); a material transfer mechanism (2-5) is arranged at the through hole of the support mechanism (2-3), The material transfer mechanism (2-5) is equipped with a feeding reel (2-4), which is located between the welding support frame (2-31) and the feeding support frame (2-32); the feeding support frame (2-32) is provided with a material extraction mechanism (2-6) in a direction away from the welding support frame (2-31); the stator mechanism (2-1) and the rotor mechanism (2-2) are respectively electrically connected to the positive and negative poles of the power supply; the stator mechanism (2-1) is movably connected with a skeleton steel bar, and one end of the skeleton steel bar is detachably fixedly connected to the material extraction mechanism (2-6); the feeding reel (2-4) is provided with a surrounding steel bar, and the surrounding steel bar is equipped with the rotor mechanism (2-2); the stator mechanism (2-1) ) comprises a stator disc (2-11), a conductive column (2-12), a stator conductive sheet (2-13), an inlet disc (2-14) and a stator housing (2-15); the conductive column (2-12) is a cylinder, and the two ends of the cylinder are coaxially fixedly connected to the stator disc (2-11) and the inlet disc (2-14) respectively; the stator disc (2-11) is a disc body with a plurality of arc-shaped grooves arranged on the outer circumference, and the plurality of grooves are arranged in a uniform circular array along the central axis of the stator disc (2-11), and the central axis of the grooves is arranged in parallel with the central axis of the stator disc (2-11); one end of the stator conductive sheet (2-13) is connected to the conductive column (2-12), and the other end is connected to an electrode of a power source; the inlet disc (2-14) is a cylindrical body, and the two ends of the cylindrical body are coaxially fixedly connected to the stator disc (2-11) and the inlet disc (2-14) respectively; the stator disc (2-11) is a disc body with a plurality of arc-shaped grooves arranged on the outer circumference, and the plurality of grooves are arranged in a uniform circular array along the central axis of the stator disc (2-11), and the central axis of the grooves is arranged in parallel with the central axis of the stator disc (2-11); one end of the stator conductive sheet (2-13) is connected to the conductive column (2-12), and the other end is connected to an electrode of a power source; The feed tray (2-14) is a disk body with six through holes on the end surface, and the six through holes are arranged in a uniform circumferential array along the central axis of the feed tray (2-14). Six skeleton steel bars are arranged, which pass through the six through holes of the feed tray (2-14) and then pass through the grooves of the stator disk (2-11) to be fixedly and detachably connected to the material extraction mechanism (2-6); the conductive column (2-12) is fixedly connected to the inside of the stator housing (2-15); the conductive column (2-12) and the through hole of the welding support frame (2-31) are coaxially arranged; the rotor mechanism (2-2) comprises a rotor disk (2-21), a rotor gear ring (2-22), a material guide frame (2-23), a welding seat (2-24) and a rotor conductive sheet (2-25);The rotor disk (2-21) is a circular ring body, one side of the end face of which is coaxially fixedly connected to a rotor gear ring (2-22), and the other side is fixedly connected to a feed frame (2-23) and a welding seat (2-24); the rear of the rotor gear ring (2-22) is connected to a rotor electric ring (2-10), and the rotor electric ring (2-10) is electrically connected to an electrode of a power supply; the rotor conductive sheet (2-25) is fixedly connected to the welding seat (2-24) and the rotor electric ring (2-10), respectively; the surrounding steel bars pass from the feeding reel (2-4) through the feed frame (2-23) to the welding seat (2-24), and contact the six skeleton steel bars in sequence under the rotation of the rotor mechanism (2-2), and complete welding by using electric current under the joint action of the welding seat (2-24) and the stator mechanism (2-1); The skeleton steel bar preparation rack (1) comprises a placing rack (1-1), a cutting rack (1-2), a stopper (1-3) and a roller (1-4); the placing rack (1-1) and the cutting rack (1-2) are respectively rectangular frames, the heights of the two being the same, and the two are fixedly connected in parallel along a long side; a plurality of stoppers (1-3) are vertically fixedly connected to the long side of the placing rack (1-1) away from the cutting rack (1-2); the plurality of stoppers (1-3) are located directly above the placing rack (1-1) and are arranged in a uniform linear array; a plurality of rollers (1-4) are arranged at the upper end of the cutting rack (1-2), the plurality of rollers (1-4) are arranged in a uniform linear array, and the central axis of the rollers (1-4) is arranged vertically to the long side of the cutting rack (1-2); the semi-finished product placing rack (3) is composed of a plurality of steel beams with legs, the plurality of steel beams are vertically fixedly connected to the guide frame (2-8), and are arranged in a uniform linear array.

2. The processing line of small-diameter steel cage for construction engineering as claimed in claim 1 is characterized by: The surrounding steel bar preparation rack (4) comprises a surrounding steel bar base frame (4-1), an inclined plate (4-2), an inclined rod (4-3) and a baffle (4-4); the surrounding steel bar base frame (4-1) is a rectangular frame; the upper part of the surrounding steel bar base frame (4-1) is fixedly connected with an inclined plate (4-2), and the angle between the inclined plate (4-2) and the plane where the surrounding steel bar base frame (4-1) is located is an obtuse angle; the inclined plate (4-2) is vertically fixedly connected with an inclined rod (4-3); a plurality of baffles (4-4) are arranged on one end of the inclined rod (4-3) away from the inclined plate (4-2); the baffle (4-4) is in the form of a right triangle and is located directly above the inclined rod (4-3); the pre-straightening mechanism (5 ) comprises a pre-straightening feed head (5-1), a protective cage (5-2) and a pre-straightening base frame (5-3); the pre-straightening feed head (5-1) comprises a shell and a feed roller group, two feed roller groups are provided, and are assembled and connected inside the shell, and the feed roller group consists of two vertical rollers and two horizontal rollers, and the horizontal rollers and the vertical rollers are arranged vertically in a front-to-back cross shape; the pre-straightening feed head (5-1) is fixedly connected to the protective cage (5-2), and the protective cage (5-2) is made of steel bars and has a truncated cone shape; the pre-straightening feed head (5-1) is fixedly connected to one end of the protective cage (5-2) where the truncated cone is a small circle; the protective cage (5-2) is fixedly connected above the pre-straightening base frame (5-3).

3. The processing line of small-diameter steel cage for construction engineering as claimed in claim 1 is characterized by: The straightening machine (6) comprises a straightening machine body (6-1), a longitudinal straightening mechanism (6-2) and a transverse straightening mechanism (6-3); the longitudinal straightening mechanism (6-2) and the transverse straightening mechanism (6-3) are connected to the upper part of the straightening machine body (6-1); the longitudinal straightening mechanism (6-2) and the transverse straightening mechanism (6-3) are respectively provided with five straightening wheels, the five straightening wheels are arranged in a staggered manner of two on top and three on the bottom, and grooves are provided on the circumference of the straightening wheels for the surrounding steel bars to pass through; the straightening wheels of the longitudinal straightening mechanism (6-2) and the transverse straightening mechanism (6-3) are arranged vertically and are driven to rotate by the straightening machine body (6-1).

4. The processing line of small-diameter steel cage for construction engineering as claimed in claim 1 is characterized by: The rotor gear ring (2-22) is connected to a gear through a chain, the gear is coaxially fixedly connected to the output shaft of the gearbox, the input shaft of the gearbox is connected to the output shaft of a motor, and the stator housing (2-15) is fixedly connected to the upper part of the gearbox housing; the material transfer mechanism (2-5) comprises a feed reel fixing part (2-52) and a material transfer power mechanism (2-51); the material transfer power mechanism (2-51) drives the feed reel fixing part (2-52) to rotate about the central axis of the through hole of the feed support frame (2-32); the feed reel fixing part (2-5 2) is a circular ring body, which is coaxially detachably fixedly connected with the feeding reel (2-4); the material transfer power mechanism (2-51) includes a gear ring, a chain, a gear and a motor, the gear ring is coaxially fixedly connected with the feeding reel fixing member (2-52), the chain is assembled with the gear and the gear ring, and the gear is coaxially fixedly connected with the output shaft of the motor; the material extraction mechanism (2-6) includes a clamping disk (61) and a power rod (62); the clamping disk (61) includes a movable disk (611), a fixed disk (612), a clamping claw (613) and a cartridge (614); the movable disk (611) , the fixed disk (612) and the power rod (62) are all coaxially arranged, the movable disk (611) is fixedly connected to the power rod (62), and moves axially under the drive of the power rod (62); six cartridges (614) are vertically fixedly connected to the end surface of the movable disk (611), and the six cartridges (614) are arranged in a uniform circular array; six clamping claws (613) are vertically fixedly connected to the end surface of the fixed disk (612), and the clamping claws (613) and the cartridges (614) are plugged into the inside of the cartridges (614) in a one-to-one correspondence; the clamping claws (613) are in the shape of an inverted truncated cone, and the clamping claws (613) are in the shape of an inverted truncated cone. The diameter of the opening at one end of the cylinder (614) connected to the clamp (613) is smaller than the diameter of the large end surface circle of the clamp (613); the power rod (62) is fixedly connected to the output end of the cylinder; the material pulling mechanism (2-6) is fixedly connected to the sliding trolley (2-7), and a guide frame (2-8) is arranged below the sliding trolley (2-7). The sliding trolley (2-7) can move linearly along the guide frame (2-8), and the direction of movement is parallel to the central axis of the through hole of the welding support frame (2-31); and a plurality of lifting support mechanisms (2-9) are arranged below the guide frame (2-8).

5. The processing line of small-diameter steel cage for construction engineering as claimed in claim 4 is characterized by: The feeding reel loading mechanism (7) comprises a reel loading and feeding head (7-1), a reel driving turntable (7-2), a driving turntable rotating seat (7-3) and a driving turntable power mechanism (7-4); the center position of the reel driving turntable (7-2) is rotatably connected to the driving turntable rotating seat (7-3), and the driving turntable power mechanism (7-4) provides power to the driving turntable rotating seat (7-3) to rotate; the reel driving turntable (7-2) A reel loading and feeding head (7-1) is arranged at one side of the peripheral surface; two feeding reels (2-4) are arranged, which are detachably mounted on the feeding reel fixing part (2-52) and the reel driving turntable (7-2), respectively, and the surrounding steel bars are output at the feeding reel fixing part (2-52) and the surrounding steel bars are input at the reel driving turntable (7-2), and the feeding reel fixing part (2-52) and the reel driving turntable (7-2) are alternately mounted on the feeding reel fixing part (2-52) and the reel driving turntable (7-2).

6. The processing line of small-diameter steel cage for construction engineering as claimed in claim 5 is characterized by: The reel loading and feeding head (7-1) comprises a linear bearing seat, a feeding ring and a guide rod; the reel driving turntable (7-2) comprises a rotating disk and a fixing member; the driving turntable power mechanism (7-4) comprises a motor and a gearbox; the linear bearing seat is mounted and connected to the guide rod, a feeding ring is fixedly connected to the upper part of the linear bearing seat, and the steel bar is passed through the feeding ring and then wound around the feeding reel (2-4), and the feeding reel (2-4) is detachably fixedly connected to the fixing member of the reel driving turntable (7-2); the two sides of the rotating disk are respectively connected to the fixing member and the driving turntable rotating seat (7-3); the output shaft of the motor of the driving turntable power mechanism (7-4) is mounted and connected to the input shaft of the gearbox, the output shaft of the gearbox is mounted and connected to the rotating disk of the reel driving turntable (7-2) to drive it to rotate, and the output shaft of the gearbox is mounted and connected to the guide rod of the reel loading and feeding head (7-1) to drive it to rotate.

7. The processing line of small-diameter steel cage for construction engineering as claimed in claim 4 is characterized by: The guide frame (2-23) is made of a plate material, and its edge profile is a section of variable diameter spiral line, one end of which is close to the feeding reel (2-4) and the other end of which is close to the welding seat (2-24), and a plurality of annular bodies are arranged on its surface, and the steel bars are passed through the plurality of annular bodies in sequence; the rotor electric ring (2-10) comprises a conductive ring (2-101), a semicircular conductive sheet (2-102), a conductive block (2-103) and an electric ring conductive sheet (2-104); the conductive ring (2-101) is coaxially arranged with the rotor gear ring (2-22), and its inner ring wall is connected with the stator conductive sheet (2-13) by sliding friction; a semicircular conductive sheet is coaxially arranged above the conductive ring (2-101) The semicircular conductive sheet (2-102) is fixedly connected to the conductive ring (2-101) with a plurality of conductive blocks (2-103); one end of the electric ring conductive sheet (2-104) is fixedly connected to the semicircular conductive sheet (2-102), and the other end is electrically connected to an electrode of a power source; the sliding trolley (2-7) comprises a trolley body, a running wheel and a trolley power mechanism, the trolley body is fixedly connected to the power rod (62), the running wheel and the trolley power mechanism are assembled and connected, the trolley power mechanism consists of a sprocket, a chain and a motor, the sprocket is coaxially fixedly connected to the running wheel, and the running wheel is clamped on the guide frame (2-8); the lifting support mechanism (2-9) is a pneumatic scissor-type lifting platform.

8. A processing method for a processing line of a small-diameter steel cage for construction engineering as claimed in claim 1, characterized in that: The following steps are involved: S1: Preparing skeleton steel bars: cutting a number of skeleton steel bars into preset lengths on a cutting rack, and then placing them on a placement rack for standby use; S2: Preparing the surrounding steel bars, hanging the surrounding steel bars in a coil on the surrounding steel bar preparation rack, and then passing the surrounding steel bar coil through the pre-straightening mechanism, and then straightening it through the straightening machine to reach the feeding reel loading mechanism, and the feeding reel loading mechanism winds the surrounding steel bars on the first feeding reel, then removes the feeding reel, replaces it with the second feeding reel, and repeats the above steps for standby; S3: End fixed-point welding: insert six skeleton steel bars into the roll welding device, assemble the feeding reel with surrounding steel bars on the roll welding device, insert the surrounding steel bars into the guide frame, and then manually weld the first welding point; S4: Automatic roll welding, the roll welding device is turned on for automatic welding, the stator mechanism and the rotor mechanism weld the surrounding steel bars to the skeleton steel bars, and the moving speed of the pull-out mechanism determines the pitch of the surrounding steel bars on the skeleton steel bars. Until the pull-out mechanism moves to the preset position, an automatic roll welding operation is completed to obtain a semi-finished steel cage; S5: Alternate the feeding reels, remove the feeding reel that has finished outputting the steel bars in step 4, alternate with the feeding reel on the feeding reel loading mechanism, and repeat step 4; S6: end bending and welding, taking the semi-finished steel cage in step 4 from the roll welding device, placing it on the semi-finished product placement rack, and then manually bending one end of the semi-finished steel cage into a cone, and manually welding it, completing the welding operation, and obtaining a finished steel cage; S7: Store for future use.

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