CN112536389A

CN112536389A - PLC (programmable logic controller) control-based steel bar bending device for building construction and working method thereof

Info

Publication number: CN112536389A
Application number: CN202011360054.0A
Authority: CN
Inventors: 田云阁
Original assignee: Xingtai Polytechnic College
Current assignee: Xingtai Polytechnic College
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-03-23

Abstract

The invention discloses a PLC (programmable logic controller) -control-based steel bar bending device for building construction, which comprises a support, wherein a cutting assembly is arranged on the support and comprises a support post, a cutting blade is arranged on one side of the support post, a clamping assembly is arranged on the support post, a sliding assembly is arranged below the support post, a feeding assembly is arranged on the other side of the support post and comprises a first conveying roller, a second conveying roller is arranged above the first conveying roller, a bending assembly is further arranged on the support, and a material taking assembly is arranged on one side of the bending assembly. The steel bar bending device is stable and reliable in structure and practical in function, only different steel bar feeding materials need to be manually controlled, all subsequent operations are automatically completed, the production safety is improved, the fixing effect is good, the steel bar falling probability is reduced during conveying and cutting, a plurality of steel bars can be bent simultaneously, material arrangement and material collection can be automatically cut, and the working efficiency is high.

Description

PLC (programmable logic controller) control-based steel bar bending device for building construction and working method thereof

Technical Field

The invention relates to the field of building construction, in particular to a steel bar bending device for building construction based on PLC control and a working method thereof.

Background

The reinforcing steel bar is steel for reinforced concrete and prestressed reinforced concrete, and the cross section of the reinforcing steel bar is circular or square with round corners. Comprises plain round steel bars, ribbed steel bars and twisted steel bars. The reinforcing steel bar for reinforced concrete is straight bar or wire rod-shaped steel for reinforcing steel bar for reinforced concrete, the shape of the reinforcing steel bar is smooth steel bar and deformed steel bar, and the delivery state is straight bar and wire rod. The plain round steel bars are actually small round steel and wire coils of ordinary low-carbon steel. Deformed bars are surface ribbed bars, usually with 2 longitudinal ribs and transverse ribs distributed uniformly along the length. The cross ribs are 3 types of spiral, herringbone and crescent shapes. Expressed in millimeters of nominal diameter. The nominal diameter of the deformed steel bar is equivalent to the nominal diameter of the smooth steel bar with the same cross section. The nominal diameter of the steel bars is 8-50 mm, and the recommended diameters are 8, 12, 16, 20, 25, 32 and 40 mm. Steel grade: 20MnSi, 20MnV, 25MnSi, BS20 MnSi. The steel reinforcement is mainly subjected to tensile stress in the concrete. The deformed reinforcing steel bar has larger bonding capacity with concrete due to the action of the ribs, so that the deformed reinforcing steel bar can better bear the action of external force. Reinforcing bars are widely used in various building structures. Especially large, heavy, light-duty thin-walled and high-rise building structures. The existing steel bar bending device is low in working efficiency and low in bending speed, manual auxiliary operation is often needed, damage to operators is easily caused during bending, and the automation degree is low. In view of such circumstances, a reinforcing bar bending apparatus for building construction based on PLC control and a method of operating the same have been proposed.

Disclosure of Invention

The invention aims to provide a steel bar bending device for building construction based on PLC control and a working method thereof, and effectively solves the problems that the existing steel bar bending device is low in working efficiency, low in bending speed, prone to manual auxiliary operation, prone to damage to operators during bending and low in automation degree. The steel bar bending device is stable and reliable in structure and practical in function, only different steel bar feeding materials need to be manually controlled, all subsequent operations are automatically completed, the production safety is improved, the fixing effect is good, the steel bar falling probability is reduced during conveying and cutting, a plurality of steel bars can be bent simultaneously, material arrangement and material collection can be automatically cut, and the working efficiency is high.

The purpose of the invention can be realized by the following technical scheme:

the utility model provides a reinforcing bar bending apparatus for construction based on PLC control, reinforcing bar bending apparatus includes the support, be equipped with cutting assembly on the support, cutting assembly includes the pillar, pillar one side is equipped with the cutting blade, is equipped with clamping component on the pillar, and the pillar has the slip subassembly, and the pillar opposite side is equipped with the pan feeding subassembly, and the pan feeding subassembly includes first transport roller, and first transport roller top is equipped with the second and carries the roller, still is equipped with the subassembly of bending on the support, and the subassembly of bending includes the axle that bends of array distribution, and the subassembly one side of bending is equipped with gets the material subassembly.

Furthermore, be equipped with the slip electric jar on the support, be equipped with the electric jar slider under the slip electric jar, be equipped with the rotation cylinder under the electric jar slider.

Further, the pan feeding subassembly includes first backup pad, first backup pad is fixed at the pillar opposite side, be equipped with first bottom plate on the first backup pad, first bottom plate passes through the fastener with first backup pad and is connected, be equipped with the first curb plate of array distribution on the first bottom plate, first curb plate both ends all are equipped with the regulating block, be equipped with rolling bearing on the regulating block, rolling bearing can slide adjusting interval and distance on the regulating block, be equipped with the first annular fluting of array distribution on the first transport roller, still be equipped with first gear on the first transport roller, first transport roller is installed between the first curb plate, first transport roller one side is equipped with the second gear, the second gear is installed on first curb plate, second gear and first gear engagement, first motor is fixed on first bottom plate, first motor one end is equipped with the third gear, the third gear and the second gear engagement.

Further, a second annular groove which is distributed in an array manner is formed in the second conveying roller, a fourth gear is further arranged on the second conveying roller and is meshed with the first gear, the first motor drives the first conveying roller and the second conveying roller to rotate, lifting blocks are arranged at two ends of the second conveying roller, first guide posts are arranged on the lifting blocks and penetrate through a first top plate, second guide posts which are distributed in an array manner are arranged on the first top plate, springs are arranged on the second guide posts, the first guide posts are fixedly connected with the first lifting plate, the second guide posts are elastically connected with the first lifting plate through springs, lifting posts which are distributed in a mirror image manner are further arranged under the first lifting plate, an adjusting disc is arranged on the first top plate and is in running fit with the first top plate, a rotating rod is arranged on one side of the adjusting disc, arc-shaped grooves which are distributed in an axial direction are formed in the adjusting disc, and the distance between the first conveying roller and the second conveying roller is adjusted by the adjusting disc.

Further, the pillar top is equipped with the second roof, and pillar one side is equipped with first electric jar, and first electric jar one end is equipped with first promotion piece, is equipped with the mounting bracket on the first promotion piece, is equipped with the cutting blade on the mounting bracket, and cutting blade one side is equipped with the second motor, and the second motor drives the cutting blade and rotates, and first electric jar promotes the ascending cutting of cutting blade.

Further, the clamping assembly comprises a supporting block, first grooves distributed in an array are formed in the supporting block, a second groove penetrating through the supporting block is formed in the center of the supporting block, the cutting blade ascends and descends in the second groove, first cylinders distributed in the array are arranged on two sides of the supporting block, a second lifting plate distributed in the array is arranged on the first cylinder, a pressing block is arranged on one side of the second lifting plate, a third groove distributed in the array is formed in the pressing block, the first cylinder drives the pressing block to descend, the third groove and the first groove compress reinforcing steel bars, and the first electric cylinder pushes the cutting blade to ascend and cut.

Further, the sliding assembly comprises a bottom frame, the bottom frame is fixed on a sliding groove which is formed in the bottom frame and is distributed in a mirror image mode, a lead screw is arranged in the bottom frame, a third motor is arranged at one end of the lead screw, a lead screw sliding block is arranged on the lead screw and is fixed at the lower end of the supporting column, the third motor is started to drive the supporting column to slide along the sliding groove, and the position of the clamping assembly is adjusted.

Further, the bending assembly comprises a second supporting plate, a first mounting plate is arranged on one side of the second supporting plate, material receiving frames distributed in a mirror image mode are arranged on two sides of the first mounting plate, a bending steel bar frame is received by the material receiving frames, a second mounting plate distributed in an array mode is arranged on the other side of the second supporting plate, an anti-falling plate is arranged between the second mounting plate, third guide posts are arranged on the second mounting plate, one ends of the third guide posts are provided with pushing rods, the pushing rods are connected with a second electric cylinder, the second electric cylinder is fixed to the other side of the second supporting plate through the third mounting plate, the pushing rods are pushed to move by the second electric cylinder, third electric cylinders are arranged on the second mounting plate and are rotatably connected with the second mounting plate through first rotating shafts, first telescopic blocks are arranged at one ends of the third electric cylinders, rotating rods and eccentric bending rods are arranged on the bending shafts, rotating blocks are arranged at the other ends of the bending shafts, and are rotatably matched with the first telescopic.

Further, get the material subassembly including removing the frame, remove the frame and fix in the revolving cylinder below, remove the frame below and be equipped with the bearing frame that the mirror image distributes, be equipped with the third pivot in the bearing frame, it is equipped with the third backup pad to remove frame one side, the third backup pad has the fourth electric jar, fourth electric jar lower extreme is equipped with the flexible piece of second, be equipped with the fourth pivot in the flexible piece of second, get flitch and third pivot normal running fit, it is equipped with the fourth fluting on the flitch to get, fourth fluting and fourth pivot sliding fit, fourth electric jar drives the lift of fourth pivot, it gets the flitch rotation and gets the material.

Further, the working method comprises the following steps:

step 1: starting the device, and setting the length and width of the bent steel bar;

step 2: the adjusting disc is rotated to drive the arc-shaped groove to rotate, the arc-shaped groove drives the lifting column to ascend and descend, the height of the first lifting plate is adjusted, the first lifting plate drives the second conveying roller to ascend, reinforcing steel bars are manually inserted into a space between the first conveying roller and the second conveying roller, the adjusting disc is pushed back, the spring provides downward pressure for the first lifting plate to push the second conveying roller to press downwards, the first annular groove and the second annular groove clamp the reinforcing steel bars, and the first motor is started to drive the first conveying roller and the second conveying roller to rotate and convey the reinforcing steel bars to advance;

and step 3: the steel bar enters the bending assembly and then continues to move forwards, the steel bar enters a position between the rotating rod and the bending rod, a third electric cylinder at the front end of the advancing steel bar pushes the bending shaft to rotate to bend the steel bar with half the length of the long edge, then the bending shaft rotates reversely, the steel bar continues to move forwards to the length of the short edge, the third electric cylinder pushes the bending shaft to rotate to bend, and the steel bar is bent to form two short edges, one long edge and half of the long edge and then stops;

and 4, step 4: the first cylinder drives the pressing block to descend, the third slot and the first slot compress the steel bars, and the first cylinder pushes the cutting blade to ascend to cut the steel bars;

and 5: after cutting, the first cylinder loosens the steel bars, the third motor drives the support to retreat, the other group of third electric cylinders pushes the other group of bending shafts to rotate reversely to bend the other half of the steel bars on the long side, and the steel bars are bent into a frame shape;

step 6: the second electric cylinder pushes the material pushing rod to push the bent steel bar frame to the material collecting frame, and the material taking assembly starts to take materials after bending for ten times;

and 7: the sliding electric cylinder drives the material taking assembly to move forward, the fourth electric cylinder drives the material taking plate to rotate, the top end of the material taking plate descends to enter the bent steel bar frame, then the fourth electric cylinder drives the material taking plate to rotate to ascend and take materials, the sliding electric cylinder drives the material taking assembly to retreat, the rotating air cylinder drives the material taking assembly to rotate 180 degrees, the fourth electric cylinder drives the material taking plate to rotate, and the top end of the material taking plate descends to empty the bent steel bar frame taken out.

The invention has the beneficial effects that:

1. the steel bar bending device has stable and reliable structure and practical function, only needs to manually control different steel bar feeding materials, and all subsequent operations are automatically completed, so that the production safety is improved;

2. the steel bar bending device is good in fixing effect, reduces the steel bar falling probability during conveying and cutting, can bend a plurality of steel bars simultaneously, can automatically cut and collect materials, and is high in working efficiency.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of a bending apparatus for reinforcing bars according to the present invention;

FIG. 2 is a PLC operational flow diagram of the present invention;

FIG. 3 is a schematic view of the stent structure of the present invention;

FIG. 4 is a schematic view showing a part of the structure of the bending apparatus for reinforcing bars according to the present invention;

FIG. 5 is a schematic view of a feeding assembly according to the present invention;

FIG. 6 is a schematic view of a portion of the feed assembly of the present invention;

FIG. 7 is an exploded view of a portion of the feed assembly of the present invention;

FIG. 8 is a schematic view of the cutting assembly of the present invention;

FIG. 9 is a schematic view of the clamp assembly of the present invention;

FIG. 10 is a schematic view of the slide assembly of the present invention;

FIG. 11 is a schematic view of a bending assembly of the present invention;

FIG. 12 is a schematic view of a portion of the bending assembly of the present invention;

FIG. 13 is a schematic view of a portion of the bending assembly of the present invention;

FIG. 14 is a schematic view of a portion of the bending assembly of the present invention;

fig. 15 is a schematic view of a take-off assembly of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

The utility model provides a reinforcing bar bending apparatus for construction based on PLC control, reinforcing bar bending apparatus includes support 1, as shown in fig. 1-15, be equipped with cutting assembly 3 on the support 1, cutting assembly 3 includes pillar 31, pillar 31 one side is equipped with cutting blade 331, be equipped with clamping component 34 on the pillar 31, pillar 31 has slide module 35, pillar 31 opposite side is equipped with pan feeding subassembly 2, pan feeding subassembly 2 includes first transport roller 24, be equipped with second transport roller 26 above first transport roller 24, still be equipped with bending assembly 4 on the support 1, bending assembly 4 includes array distribution's bending axle 47, bending assembly 4 one side is equipped with gets material subassembly 5.

The support 1 is provided with a sliding electric cylinder 11, an electric cylinder sliding block 12 is arranged below the sliding electric cylinder 11, and a rotating air cylinder 13 is arranged below the electric cylinder sliding block 12.

The feeding assembly 2 comprises a first supporting plate 21, the first supporting plate 21 is fixed on the other side of the pillar 31, a first bottom plate 211 is arranged on the first supporting plate 21, the first bottom plate 211 is connected with the first supporting plate 21 through a fastener, first side plates 22 distributed in an array are arranged on the first bottom plate 211, adjusting blocks 23 are arranged at two ends of each first side plate 22, a rotating bearing 231 is arranged on each adjusting block 23, the rotating bearing 231 can slide on each adjusting block 23 to adjust the distance and the distance, first annular grooves 241 distributed in an array are arranged on each first conveying roller 24, a first gear 242 is further arranged on each first conveying roller 24, each first conveying roller 24 is arranged between the corresponding first side plates 22, a second gear 243 is arranged on one side of each first conveying roller 24, the second gear 243 is arranged on each first side plate 22, the second gear 243 is meshed with the first gear 242, the first motor 25 is fixed on the first bottom plate 211, a third gear 251 is arranged at one end of the first, the third gear 251 is engaged with the second gear 243, the second conveying roller 26 is provided with second annular grooves 261 which are distributed in an array manner, the second conveying roller 26 is further provided with a fourth gear 262, the fourth gear 262 is engaged with the first gear 242, the first motor 25 drives the first conveying roller 24 and the second conveying roller 26 to rotate, two ends of the second conveying roller 26 are respectively provided with a lifting block 263, the lifting block 263 is provided with a first guide column 264, the first guide column 264 passes through the first top plate 27, the first top plate 27 is provided with second guide columns 271 which are distributed in an array manner, the second guide columns 271 are provided with springs 272, the first guide columns 264 are fixedly connected with the first lifting plate 273, the second guide columns 271 are elastically connected with the first lifting plate 273 through the springs 272, the first lifting plate 273 is further provided with lifting columns 274 which are distributed in a mirror image manner, the first top plate 27 is provided with an adjusting disc 28, the adjusting disc 28 is rotatably matched with the first top plate 27, a rotating rod 281 is arranged on one side of the adjusting disk 28, an arc-shaped groove 282 which is axially distributed is arranged on the adjusting disk 28, and the adjusting disk 28 adjusts the distance between the first conveying roller 24 and the second conveying roller 26.

The top of pillar 31 is equipped with second roof 311, and pillar 31 one side is equipped with first electric jar 32, and first electric jar 32 one end is equipped with first promotion piece 321, is equipped with mounting bracket 33 on the first promotion piece 321, is equipped with cutting blade 331 on the mounting bracket 33, and cutting blade 331 one side is equipped with second motor 332, and second motor 332 drives cutting blade 331 and rotates, and first electric jar 32 promotes the ascending cutting of cutting blade 331.

The clamping assembly 34 comprises a supporting block 341, first slots 342 distributed in an array are arranged on the supporting block 341, a second slot 343 penetrating through the center of the supporting block 341 is arranged, the cutting blade 331 ascends and descends in the second slot 343, first cylinders 344 distributed in an array are arranged on two sides of the supporting block 341, second lifting plates 345 distributed in an array are arranged on the first cylinders 344, pressing blocks 346 are arranged on one sides of the second lifting plates 345, third slots 347 distributed in an array are arranged below the pressing blocks 346, the pressing blocks 346 are driven by the first cylinders 344 to descend, the reinforcing steel bars are pressed by the third slots 347 and the first slots 342, and the cutting blade 331 is pushed by the first electric cylinder 32 to ascend and cut.

The sliding assembly 35 comprises a bottom frame 351, the bottom frame 351 is fixed on a sliding groove 352 which is arranged on the bottom frame 351 in a mirror image distribution mode, a screw rod 353 is arranged in the bottom frame 351, a third motor 354 is arranged at one end of the screw rod 353, a screw rod sliding block 355 is arranged on the screw rod 353, the screw rod sliding block 355 is fixed at the lower end of the supporting column 31, and the third motor 354 starts to drive the supporting column 31 to slide along the sliding groove 352 to adjust the position of the.

The bending assembly 4 comprises a second supporting plate 41, a first mounting plate 42 is arranged on one side of the second supporting plate 41, receiving frames 421 distributed in a mirror image manner are arranged on two sides of the first mounting plate 42, the receiving frames 421 receive the bent reinforcement frames 43, second mounting plates 44 distributed in an array manner are arranged on the other side of the second supporting plate 41, anti-falling plates 441 are arranged between the second mounting plates 44, third guide posts 442 are arranged on the second mounting plates 44, a pushing rod 443 is arranged at one end of each third guide post 442, the pushing rod 443 is connected with a second electric cylinder 451, the second electric cylinder 451 is fixed on the other side of the second supporting plate 41 through a third mounting plate 45, the pushing rod 443 is pushed to move by the second electric cylinder 451, third electric cylinders 46 are arranged on the second mounting plates 44, the third electric cylinders 46 are rotatably connected with the second mounting plates 44 through first rotating shafts 462, a first telescopic block 461 is arranged at one end of each third electric cylinder 46, and a 471 and an eccentric bending rod 472 are arranged on the bending shaft 47, the other end of the bending shaft 47 is provided with a rotating block 473, and the rotating block 473 is rotatably matched with the first telescopic block 461 through the second rotating shaft 474.

The material taking assembly 5 comprises a moving frame 51, the moving frame 51 is fixed below the rotating cylinder 13, a bearing seat 52 distributed in a mirror image mode is arranged below the moving frame 51, a third rotating shaft 53 is arranged in the bearing seat 52, a third supporting plate 54 is arranged on one side of the moving frame 51, a fourth electric cylinder 55 is arranged below the third supporting plate 54, a second telescopic block 551 is arranged at the lower end of the fourth electric cylinder 55, a fourth rotating shaft 56 is arranged in the second telescopic block 551, a material taking plate 57 is in rotating fit with the third rotating shaft 53, a fourth groove 571 is arranged on the material taking plate 57, the fourth groove 571 is in sliding fit with the fourth rotating shaft 56, the fourth electric cylinder 55 drives the fourth rotating shaft 56 to ascend and descend, and the material taking plate 57 rotates to.

A working method of a steel bar bending device for building construction based on PLC control comprises the following steps:

step 2: rotating the adjusting disk 28 to drive the arc-shaped groove 282 to rotate, driving the lifting column 274 to ascend and descend by the arc-shaped groove 282, adjusting the height of the first lifting plate 273, driving the second conveying roller 26 to ascend by the first lifting plate 273, manually inserting the steel bars into the space between the first conveying roller 24 and the second conveying roller 26, pushing back the adjusting disk 28, providing downward pressure for the first lifting plate 273 by the spring 272, pushing the second conveying roller 26 to press downward, clamping the steel bars by the first annular open groove 241 and the second annular open groove 261, and starting the first motor 25 to drive the first conveying roller 24 and the second conveying roller 26 to rotate and convey the steel bars to advance;

and step 3: after the reinforcing steel bar enters the bending assembly 4, the reinforcing steel bar continuously moves forwards and enters between the rotating rod 471 and the bending rod 472, the third electric cylinder 46 at the front end of the advancing reinforcing steel bar pushes the bending shaft 47 to rotate to bend the reinforcing steel bar with half the length of the long side, then the bending shaft 47 rotates reversely, the reinforcing steel bar continuously moves forwards to the length of the short side, the third electric cylinder 46 pushes the bending shaft 47 to rotate to bend, and the two short sides, the long side and the half long side are bent and then stop;

and 4, step 4: the first cylinder 344 drives the pressing block 346 to descend, the third slot 347 and the first slot 342 press the steel bars tightly, and the first electric cylinder 32 pushes the cutting blade 331 to ascend to cut the steel bars;

and 5: after cutting, the first cylinder 344 releases the steel bars, the third motor 354 drives the support column 31 to retreat, the other group of third electric cylinders 46 pushes the other group of bending shafts 47 to rotate reversely to bend the other half of the steel bars on the long sides, and the steel bars are bent into a frame shape;

step 6: the second electric cylinder 451 pushes the pushing rod 443 to push the bent reinforcement frame 43 to the collecting rack 421, and the material taking assembly 5 starts to take materials after bending for ten times;

and 7: the sliding electric cylinder 11 drives the material taking assembly 5 to advance, the fourth electric cylinder 55 drives the material taking plate 57 to rotate, the top end of the material taking plate 57 descends to enter the bent steel bar frame 43, then the fourth electric cylinder 55 drives the material taking plate 57 to rotate to ascend and take materials, the sliding electric cylinder 11 drives the material taking assembly 5 to retreat, the rotating air cylinder 13 drives the material taking assembly 5 to rotate 180 degrees, the fourth electric cylinder 55 drives the material taking plate 57 to rotate, and the top end of the material taking plate 57 descends to empty the taken bent steel bar frame 43.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.

Claims

1. The utility model provides a reinforcing bar bending apparatus for construction based on PLC control, reinforcing bar bending apparatus includes support (1), a serial communication port, be equipped with cutting assembly (3) on support (1), cutting assembly (3) includes pillar (31), pillar (31) one side is equipped with cutting blade (331), be equipped with clamping component (34) on pillar (31), pillar (31) have slide module (35) down, pillar (31) other side is equipped with pan feeding subassembly (2), pan feeding subassembly (2) include first transport roller (24), be equipped with second transport roller (26) above first transport roller (24), still be equipped with bending assembly (4) on support (1), bending assembly (4) one side is equipped with gets material subassembly (5);

the bending assembly (4) comprises a second supporting plate (41), a first mounting plate (42) is arranged on one side of the second supporting plate (41), material receiving frames (421) distributed in a mirror image mode are arranged on two sides of the first mounting plate (42), bending steel bar frames (43) are received by the material receiving frames (421), second mounting plates (44) distributed in an array mode are arranged on the other side of the second supporting plate (41), anti-dropping plates (441) are arranged between the second mounting plates (44), third guide columns (442) are arranged on the second mounting plate (44), a material pushing rod (443) is arranged at one end of each third guide column (442), the material pushing rod (443) is connected with a second electric cylinder (451), the second electric cylinder (451) is fixed on the other side of the second supporting plate (41) through the third mounting plate (45), the second electric cylinder (451) pushes the material pushing rod (443) to move, third electric cylinders (46) are arranged on the second mounting plate (44), and the third electric cylinders (46) are rotatably connected with the second mounting plates (44) through first rotating shafts (462), one end of the third electric cylinder (46) is provided with a first telescopic block (461), the bending shaft (47) is provided with a rotating rod (471) and an eccentric bending rod (472), the other end of the bending shaft (47) is provided with a rotating block (473), and the rotating block (473) is in rotating fit with the first telescopic block (461) through a second rotating shaft (474).

2. The PLC-based steel bar bending device for building construction as claimed in claim 1, wherein a sliding electric cylinder (11) is arranged on the bracket (1), an electric cylinder sliding block (12) is arranged below the sliding electric cylinder (11), and a rotating air cylinder (13) is arranged below the electric cylinder sliding block (12).

3. The steel bar bending device based on PLC control for building construction according to claim 1, wherein the feeding assembly (2) comprises a first supporting plate (21), the first supporting plate (21) is fixed on the other side of the pillar (31), a first bottom plate (211) is arranged on the first supporting plate (21), the first bottom plate (211) is connected with the first supporting plate (21) through a fastener, first side plates (22) distributed in an array are arranged on the first bottom plate (211), adjusting blocks (23) are arranged at both ends of the first side plate (22), a rotating bearing (231) is arranged on each adjusting block (23), the rotating bearing (231) can slide on each adjusting block (23) to adjust the distance and the distance, first annular grooves (241) distributed in an array are arranged on the first conveying roller (24), a first gear (242) is further arranged on the first conveying roller (24), and the first conveying roller (24) is installed between the first side plates (22), a second gear (243) is arranged on one side of the first conveying roller (24), the second gear (243) is installed on the first side plate (22), the second gear (243) is meshed with the first gear (242), the first motor (25) is fixed on the first bottom plate (211), a third gear (251) is arranged at one end of the first motor (25), and the third gear (251) is meshed with the second gear (243).

4. The PLC-based steel bar bending device for building construction according to claim 1, wherein the second conveying roller (26) is provided with second annular grooves (261) distributed in an array manner, the second conveying roller (26) is further provided with a fourth gear (262), the fourth gear (262) is meshed with the first gear (242), the first motor (25) drives the first conveying roller (24) and the second conveying roller (26) to rotate, two ends of the second conveying roller (26) are provided with lifting blocks (263), the lifting blocks (263) are provided with first guide posts (264), the first guide posts (264) penetrate through the first top plate (27), the first top plate (27) is provided with second guide posts (271) distributed in an array manner, the second guide posts (271) are provided with springs (272), and the first guide posts (264) are fixedly connected with the first lifting plate (273), second guide post (271) pass through spring (272) and first lifter plate (273) elastic connection, still be equipped with lifting column (274) that the mirror image distributes under first lifter plate (273), be equipped with adjustment disk (28) on first roof (27), adjustment disk (28) and first roof (27) normal running fit, adjustment disk (28) one side is equipped with dwang (281), be equipped with axially distributed's arc wall (282) on adjustment disk (28), first transport roller (24) and second transport roller (26) interval are adjusted in adjustment disk (28).

5. The PLC-based steel bar bending device for building construction, according to claim 1, wherein a second top plate (311) is arranged at the top end of the support column (31), a first electric cylinder (32) is arranged on one side of the support column (31), a first pushing block (321) is arranged at one end of the first electric cylinder (32), a mounting frame (33) is arranged on the first pushing block (321), a cutting blade (331) is arranged on the mounting frame (33), a second motor (332) is arranged on one side of the cutting blade (331), the second motor (332) drives the cutting blade (331) to rotate, and the first electric cylinder (32) pushes the cutting blade (331) to ascend and cut.

6. The PLC-based steel bar bending device for building construction of claim 1, the clamping assembly (34) is characterized by comprising a supporting block (341), first slots (342) distributed in an array manner are formed in the supporting block (341), a second slot (343) penetrating through the supporting block (341) is formed in the center of the supporting block (341), cutting blades (331) lift in the second slot (343), first cylinders (344) distributed in an array manner are arranged on two sides of the supporting block (341), second lifting plates (345) distributed in an array manner are arranged on the first cylinders (344), pressing blocks (346) are arranged on one sides of the second lifting plates (345), third slots (347) distributed in an array manner are arranged below the pressing blocks (346), the pressing blocks (346) are driven by the first cylinders (344) to descend, reinforcing steel bars are pressed by the third slots (347) and the first slot (342), and the cutting blades (331) are pushed to ascend and cut by the first electric cylinders (32).

7. The steel bar bending device based on the PLC control for building construction is characterized in that the sliding assembly (35) comprises a base frame (351), the base frame (351) is fixedly provided with sliding grooves (352) distributed in a mirror image mode on the base frame (351), a screw rod (353) is arranged in the base frame (351), one end of the screw rod (353) is provided with a third motor (354), a screw rod sliding block (355) is arranged on the screw rod (353), the screw rod sliding block (355) is fixedly arranged at the lower end of the support column (31), and the third motor (354) is started to drive the support column (31) to slide along the sliding grooves (352) so as to adjust the position of the clamping assembly (34).

8. The PLC-based steel bar bending device for building construction as claimed in claim 2, wherein the material taking assembly (5) comprises a moving frame (51), the moving frame (51) is fixed below the rotating cylinder (13), bearing seats (52) distributed in a mirror image manner are arranged below the moving frame (51), a third rotating shaft (53) is arranged in the bearing seats (52), a third supporting plate (54) is arranged on one side of the moving frame (51), a fourth electric cylinder (55) is arranged below the third supporting plate (54), a second telescopic block (551) is arranged at the lower end of the fourth electric cylinder (55), a fourth rotating shaft (56) is arranged in the second telescopic block (551), the material taking plate (57) is in rotating fit with the third rotating shaft (53), a fourth slot (571) is arranged on the material taking plate (57), the fourth slot (571) is in sliding fit with the fourth rotating shaft (56), the fourth electric cylinder (55) drives the fourth rotating shaft (56) to ascend and descend, the material taking plate (57) rotates to take materials.

9. The working method of the PLC-based construction steel bar bending device according to any one of claims 1 to 8, wherein the working method comprises the following steps:

step 2: rotating an adjusting disk (28) to drive an arc-shaped groove (282) to rotate, wherein the arc-shaped groove (282) drives a lifting column (274) to ascend and descend, the height of a first lifting plate (273) is adjusted, the first lifting plate (273) drives a second conveying roller (26) to ascend, a steel bar is manually inserted into a position between the first conveying roller (24) and the second conveying roller (26), the adjusting disk (28) is pushed back, a spring (272) provides downward pressure for the first lifting plate (273) to push the second conveying roller (26) to press downwards, a first annular groove (241) and a second annular groove (261) clamp the steel bar, and a first motor (25) is started to drive the first conveying roller (24) and the second conveying roller (26) to rotate and convey the steel bar to advance;

and step 3: after entering the bending assembly (4), the reinforcing steel bar continues to move forwards and enters between the rotating rod (471) and the bending rod (472), a third electric cylinder (46) at the front end of the advancing reinforcing steel bar pushes the bending shaft (47) to rotate to bend the reinforcing steel bar with half the length of the long side, then the bending shaft (47) rotates reversely, the reinforcing steel bar continues to move forwards to the length of the short side, the third electric cylinder (46) pushes the bending shaft (47) to rotate to bend, and the bending is stopped after two short sides, one long side and half of the long side are bent;

and 4, step 4: the first cylinder (344) drives the pressing block (346) to descend, the third slot (347) and the first slot (342) compress the steel bars, and the first electric cylinder (32) pushes the cutting blade (331) to ascend to cut the steel bars;

and 5: after cutting, the first air cylinder (344) releases the steel bars, the third motor (354) drives the support column (31) to retreat, the other group of third electric cylinders (46) pushes the other group of bending shafts (47) to rotate reversely to bend the other half of the steel bars on the long sides, and the steel bars are bent into a frame shape;

step 6: the second electric cylinder (451) pushes the material pushing rod (443) to push the bent steel bar frame (43) to the material collecting rack (421), and the material taking assembly (5) starts material taking after bending for ten times;

and 7: the sliding electric cylinder (11) drives the material taking assembly (5) to advance, the fourth electric cylinder (55) drives the material taking plate (57) to rotate, the top end of the material taking plate (57) descends to enter the bent steel bar frame (43), then the fourth electric cylinder (55) drives the material taking plate (57) to rotate to ascend and take materials, the sliding electric cylinder (11) drives the material taking assembly (5) to retreat, the rotating air cylinder (13) drives the material taking assembly (5) to rotate 180 degrees, the fourth electric cylinder (55) drives the material taking plate (57) to rotate, and the top end of the material taking plate (57) descends to dump the bent steel bar frame (43) which is taken out.