Steel bar bending device

Abstract

The invention relates to the technical field of machining, in particular to a steel bar bending device. The technical problems that in the prior art, a hydraulic cylinder drives a bending die to bend reinforcing steel bars, the precision is poor, and reinforcing steel bar bending equipment cannot conveniently adjust the radian diameter of the bent position of the reinforcing steel bars are solved. According to the technical scheme, the device comprises a workbench, a first adjusting mechanism is installed on the workbench and comprises a mounting frame, the mounting frame is fixedly connected to the workbench, a hydraulic cylinder is installed on the upper portion of the mounting frame, the movable end of the hydraulic cylinder is fixedly connected with a driving shaft, and the driving shaft is in sliding connection with the mounting frame; a bending mechanism used in cooperation with the driving shaft is arranged on the mounting frame, a convex ring is fixedly connected to the lower portion of the outer wall of the driving shaft, a first U-shaped frame used in cooperation with the convex ring is slidably connected to the driving shaft, and guide rods are symmetrically hinged to the side, away from the mounting frame, of the first U-shaped frame through a rotating shaft. Through the design of the guide rod and the rectangular frame, the bending radian diameter of the reinforcing steel bar can be conveniently adjusted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical processing, and in particular to a reinforcing steel bar bending device. BACKGROUND

[0002] Reinforcing steel bar bending is a common reinforcing steel bar processing method, which is often used for making reinforcing steel bar mesh and reinforcing steel bar cage.

[0003] The reinforcing steel bar bending equipment in the prior art usually drives a bending die to bend reinforcing steel bars through a hydraulic cylinder, which has high bending efficiency. Although this method has high bending speed, it has low precision. The reinforcing steel bar bears a large plastic deformation in a short time, and the inner side and the outer side of the bending part of the reinforcing steel bar will generate very high concentrated stress. In addition, due to the fast deformation speed and large deformation degree, the elastic recovery force inside the reinforcing steel bar will be larger, the rebound amplitude after bending will be significantly large, and the reinforcing steel bar bending equipment cannot conveniently change the bending radius diameter of the reinforcing steel bar, cannot produce reinforcing steel bars with different radii, and has poor practicability. SUMMARY

[0004] In order to overcome the shortcomings of the reinforcing steel bar bending equipment in the prior art, i.e., the reinforcing steel bar bending precision of the hydraulic cylinder driven bending die is poor and the reinforcing steel bar bending equipment cannot produce reinforcing steel bars with different radii, the present application provides a reinforcing steel bar bending device.

[0005] The technical scheme is as follows: a reinforcing steel bar bending device, comprising a workbench, a first adjusting mechanism is installed on the workbench, the first adjusting mechanism comprises a mounting frame, the mounting frame is fixedly connected to the workbench, a hydraulic cylinder is installed on the upper part of the mounting frame, the movable end of the hydraulic cylinder is fixedly connected with a driving shaft, the driving shaft is in sliding connection with the mounting frame, a bending mechanism is arranged on the mounting frame and cooperates with the driving shaft, a convex ring is fixedly connected to the lower part of the outer wall of the driving shaft, a first U-shaped frame is in sliding connection with the convex ring on the driving shaft, a guide rod is symmetrically hinged to the side of the first U-shaped frame away from the mounting frame through a rotating shaft, a through groove is formed in the guide rod, a rectangular frame is symmetrically arranged on one side of the mounting frame, one end of a convex shaft is fixedly connected to the rectangular frame, the other end of the convex shaft is in sliding connection in the through groove of the guide rod, and a limiting pin is in through sliding connection with the rectangular frame.

[0006] Further, the bending mechanism comprises a second U-shaped frame, the driving shaft is slidably connected with the second U-shaped frame which is used in cooperation with the convex ring, the second U-shaped frame is slidably connected with the mounting frame, first elastic elements are arranged between the second U-shaped frame and the mounting frame, the rectangular frames are slidably connected with the second U-shaped frame, a plurality of limiting holes which are used in cooperation with the limiting pins are formed in the second U-shaped frame, symmetrical lateral sides of the second U-shaped frame are fixedly connected with cross bars, guide rods are slidably connected with the cross bars, slide rods are slidably connected with lower portions of the guide rods, second elastic elements are arranged between the slide rods and the mounting frame, extrusion wheels are rotatably connected with one ends of the guide rods which are away from the cross bars, a special-shaped frame is slidably connected with one side of the mounting frame, third elastic elements are arranged between the special-shaped frame and the mounting frame, symmetrical lateral sides of an upper portion of the special-shaped frame are fixedly connected with locking tooth plates, locking wheels which are used in cooperation with the locking tooth plates are fixedly connected with rotating shafts of the guide rods, a sliding ring is fixedly connected with one side of a bottom portion of the special-shaped frame, an inner wall of the sliding ring is slidably connected with an outer wall of the driving shaft, and the sliding ring is used in cooperation with the convex ring and the second U-shaped frame.

[0007] Further, the bending mechanism comprises a second U-shaped frame, the driving shaft is slidably connected with the second U-shaped frame which is used in cooperation with the convex ring, the second U-shaped frame is slidably connected with the mounting frame, first elastic elements are arranged between the second U-shaped frame and the mounting frame, the rectangular frames are slidably connected with the second U-shaped frame, a plurality of limiting holes which are used in cooperation with the limiting pins are formed in the second U-shaped frame, symmetrical lateral sides of the second U-shaped frame are fixedly connected with cross bars, guide rods are slidably connected with the cross bars, slide rods are slidably connected with lower portions of the guide rods, second elastic elements are arranged between the slide rods and the mounting frame, extrusion wheels are rotatably connected with one ends of the guide rods which are away from the cross bars, a special-shaped frame is slidably connected with one side of the mounting frame, third elastic elements are arranged between the special-shaped frame and the mounting frame, symmetrical lateral sides of an upper portion of the special-shaped frame are fixedly connected with locking tooth plates, locking wheels which are used in cooperation with the locking tooth plates are fixedly connected with rotating shafts of the guide rods, a sliding ring is fixedly connected with one side of a bottom portion of the special-shaped frame, an inner wall of the sliding ring is slidably connected with an outer wall of the driving shaft, and the sliding ring is used in cooperation with the convex ring and the second U-shaped frame.

[0008] Further, the mounting frame is provided with a pulling frame on a side which is away from the workbench, fifth elastic elements are arranged between the pulling frame and the mounting frame which is close to the mounting frame, symmetrical first elastic wedge-shaped blocks are fixedly connected with the pulling frame which is close to the mounting frame, a plurality of first locking grooves which are used in cooperation with the first elastic wedge-shaped blocks are formed in the slide rods which are close to the pulling frame.

[0009] Further, the mounting frame is provided with a pulling frame on a side which is away from the workbench, fifth elastic elements are arranged between the pulling frame and the mounting frame which is close to the mounting frame, symmetrical first elastic wedge-shaped blocks are fixedly connected with the pulling frame which is close to the mounting frame, a plurality of first locking grooves which are used in cooperation with the first elastic wedge-shaped blocks are formed in the slide rods which are close to the pulling frame.

[0010] Further, the top of the first U-shaped frame is symmetrically connected with a second elastic wedge-shaped block in sliding mode, the mounting frame is symmetrically connected with a sliding rod in sliding mode, the mounting seat is fixedly connected with the sliding rod on the same side, the eighth elastic member is arranged between the sliding rod and the mounting frame, the side of the sliding rod away from the mounting frame is fixedly connected with one end of the rectangular tube through a support plate, the inner wall of the rectangular tube is slidably connected with a locking frame, the end of the locking frame away from the rectangular tube is slidably connected in the first U-shaped frame, the ninth elastic member is arranged between the end of the locking frame close to the first U-shaped frame and the first U-shaped frame, and the side of the locking frame away from the mounting frame is provided with a first tooth-shaped groove matched with the second elastic wedge-shaped block.

[0011] Further, the end of the locking frame close to the rectangular tube is fixedly connected with a sliding block, and the rectangular tube is provided with a positioning groove matched with the sliding block.

[0012] Further, the mounting frame is symmetrically provided with a third elastic wedge-shaped block, and the side of the locking frame close to the mounting frame is provided with a second tooth-shaped groove matched with the third elastic wedge-shaped block.

[0013] Further, the side of the rectangular tube away from the mounting frame is fixedly connected with one end of the first unlocking rod, and the side of the second elastic wedge-shaped block away from the mounting frame is fixedly connected with a first protruding shaft matched with the first unlocking rod, and the tenth elastic member is arranged between the second elastic wedge-shaped block and the first U-shaped frame.

[0014] Further, the side of the second elastic wedge-shaped block away from the first unlocking rod is fixedly connected with a pressing block, one side of the mounting frame is fixedly connected with a guide frame in a symmetrical mode, the guide frame is slidably connected with a second unlocking rod matched with the pressing block in the guide frame, and one side of the third elastic wedge-shaped block is fixedly connected with a second protruding shaft matched with the second unlocking rod.

[0015] The beneficial effects of the present application are: The present application can conveniently adjust the bending diameter of the reinforcing steel bar through the design of the guide rod and the rectangular frame, effectively improves the working efficiency of the reinforcing steel bar bending process through the cooperation of the adjusting mechanism and the bending mechanism, and makes the reinforcing steel bar gradually bent to the required angle through the movement of the driving hydraulic cylinder, so that the stress distribution of the reinforcing steel bar is more uniform, the rebound is more accurately compensated, and the bending precision is higher.

[0016] The present application can automatically adjust the position of the extrusion wheel after each extrusion of the reinforcing steel bar through the design of the sliding rod and the transmission assembly, and can automatically adjust the movement distance of the extrusion wheel according to the upward movement distance of the guide rod.

[0017] The present application can automatically reset after the whole device completes the bending of the reinforcing steel bar through the design of the first unlocking rod and the second unlocking rod, thereby improving the working efficiency and practicability of the whole device. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Structure diagram of the whole application; Figure 2 Structure diagram of the first adjusting mechanism in the application; Figure 3 Structure diagram of the second adjusting mechanism and the bending mechanism in the application; Figure 4 Installation diagram at the special-shaped frame in the application; Figure 5 Installation diagram at the guide wheel in the application; Figure 6 is Figure 3 Enlarged view of the local structure at A in the application; Figure 7 Installation diagram at the sliding seat in the application; Figure 8 Installation diagram at the U-shaped locking rod in the application; Figure 9 Installation diagram at the second elastic wedge in the application; Figure 10 Installation diagram at the locking frame in the application; Figure 11 Installation diagram at the first unlocking rod in the application; Figure 12 Installation diagram at the second unlocking rod in the application.

[0019] Reference numerals: 1, workbench; 201, mounting frame; 202, hydraulic cylinder; 203, drive shaft; 204, convex ring; 205, first U-shaped frame; 206, guide rod; 207, rectangular frame; 208, limit pin; 301, second U-shaped frame; 302, cross rod; 303, guide rod; 304, sliding rod; 305, extrusion wheel; 306, special-shaped frame; 307, locking tooth plate; 308, locking wheel; 309, sliding ring; 401, mounting seat; 402, transmission assembly; 4021, U-shaped frame; 403, guide wheel; 501, pulling frame; 502, first elastic wedge; 601, sliding seat; 602, sliding plate; 6021, positioning wheel; 603, telescopic shaft; 6031, U-shaped locking rod; 701, electromagnet; 801, second elastic wedge; 802, sliding rod; 803, rectangular tube; 804, locking frame; 805, sliding block; 901, third elastic wedge; 1001, first unlocking rod; 1101, extrusion block; 1102, guide frame; 1103, second unlocking rod; 100, reinforcing bar. DETAILED DESCRIPTION

[0020] The technical solutions of the application will be further described below with reference to the drawings.

[0021] As Figures 1-12As shown, a steel bar bending device, including a workbench 1, the workbench 1 is installed with a first adjusting mechanism, the first adjusting mechanism includes a mounting frame 201, the workbench 1 is fixedly connected with the mounting frame 201, the mounting frame 201 is arranged obliquely, the upper portion of the mounting frame 201 is provided with a hydraulic cylinder 202, the telescopic length of the hydraulic cylinder 202 is a constant value, the movable end of the hydraulic cylinder 202 is fixedly connected with a drive shaft 203, the drive shaft 203 is slidably connected with the mounting frame 201, the mounting frame 201 is provided with a bending mechanism matched with the drive shaft 203, the lower portion of the outer wall of the drive shaft 203 is fixedly connected with a convex ring 204, the drive shaft 203 is slidably connected with a first U-shaped frame 205 matched with the convex ring 204, the side away from the mounting frame 201 of the first U-shaped frame 205 is symmetrically hinged with a guide rod 206 through a rotating shaft, the guide rod 206 is provided with a through slot, one side of the mounting frame 201 is symmetrically provided with a rectangular frame 207, the side away from the mounting frame 201 of the rectangular frame 207 is fixedly connected with one end of a convex shaft, the other end of the convex shaft is slidably clamped into the through slot of the adjacent guide rod 206, the rectangular frame 207 is slidably connected with a limiting pin 208 in a penetrating manner, the limiting pin 208 is used for limiting the position of the rectangular frame 207.

[0022] The bending mechanism includes a second U-shaped frame 301, the drive shaft 203 is slidably connected with the second U-shaped frame 301 matched with the convex ring 204, the second U-shaped frame 301 is slidably connected with the mounting frame 201, a first elastic member is arranged between the second U-shaped frame 301 and the mounting frame 201, the first elastic member is a compression spring, the rectangular frame 207 is slidably connected with the second U-shaped frame 301, the second U-shaped frame 301 is provided with a plurality of limiting holes matched with the limiting pin 208, the two sides of the second U-shaped frame 301 are symmetrically fixedly connected with a cross rod 302, the cross rod 302 is slidably connected with a guide rod 303, the lower portion of the guide rod 303 is slidably connected with a sliding rod 304, the ends of the sliding rods 304 close to each other are respectively arranged with a second elastic member between the mounting frame 201, the second elastic member is a compression spring, the end away from the cross rod 302 of the guide rod 303 is rotatably connected with a squeezing wheel 305, one side of the mounting frame 201 is slidably connected with a special-shaped frame 306, a third elastic member is arranged between the special-shaped frame 306 and the mounting frame 201, the third elastic member is a compression spring, the upper portion of the special-shaped frame 306 is symmetrically fixedly connected with a locking tooth plate 307, the rotating shaft of the guide rod 206 is fixedly connected with a locking wheel 308 matched with the locking tooth plate 307, one side of the bottom of the special-shaped frame 306 is fixedly connected with a sliding ring 309, the inner wall of the sliding ring 309 is slidably connected with the outer wall of the drive shaft 203, and the sliding ring 309 is matched with the convex ring 204 and the second U-shaped frame 301.

[0023] The second adjusting mechanism mounted on the mounting frame 201 comprises a mounting seat 401, two mounting seats 401 are symmetrically arranged at the middle part of the mounting frame 201 and away from the workbench 1, a transmission assembly 402 is arranged at the side of each mounting seat 401 away from the mounting frame 201, the transmission assembly 402 is composed of a one-way gear and a first gear rack, the one-way gear is rotatably connected to the mounting seat 401, the first gear rack is fixedly connected to the side of the sliding rod 304 close to the second U-shaped frame 301, the first gear rack is engaged with the one-way gear, a U-shaped frame 4021 is fixedly connected to the mounting seat 401, a guide wheel 403 is rotatably connected to the U-shaped frame 4021, a fourth elastic element is arranged between the U-shaped frame 4021 and the guide wheel 403, the fourth elastic element is a torsion spring, a limiting assembly is arranged between the guide wheel 403 and the rotating shaft of the one-way gear, the limiting assembly is composed of an elastic pawl and a ratchet wheel, the ratchet wheel is fixedly connected to the rotating shaft of the one-way gear, the elastic pawl is mounted at the bottom of the guide wheel 403 and engaged with the ratchet wheel, one end of a pull rope is fixedly connected to the guide wheel 403, and the other end of the pull rope is fixedly connected to the second U-shaped frame 301.

[0024] The locking assembly mounted on the mounting frame 201 comprises a pulling frame 501, the pulling frame 501 is arranged at the side of the mounting frame 201 away from the workbench 1, a fifth elastic element is arranged between the side of the pulling frame 501 close to the mounting frame 201 and the mounting frame 201, the fifth elastic element is an elastic telescopic rod, a first elastic wedge-shaped block 502 is fixedly connected to the upper part of the side of the pulling frame 501 close to the mounting frame 201 in a symmetrical manner, a plurality of first locking grooves matched with the first elastic wedge-shaped block 502 are formed in the side of the sliding rod 304 close to the pulling frame 501.

[0025] A sliding seat 601 is fixedly connected to the lower part of the side of the mounting frame 201 away from the workbench 1, a sliding plate 602 is slidably connected to the sliding seat 601 in a symmetrical manner, a sixth elastic element is arranged between the two sliding plates 602, the sixth elastic element is a return spring, a positioning wheel 6021 is rotatably connected to the end of the sliding plate 602 away from the sliding seat 601 and located at the side of the sliding plate 602 close to the mounting frame 201, an extension shaft 603 is fixedly connected to the sliding plate 602, one end of the extension shaft 603 away from the sliding plate 602 is fixedly connected to the sliding rod 304, guide shafts are fixedly connected to the sliding seat 601 in a symmetrical manner, a U-shaped lock rod 6031 is slidably connected to the two guide shafts in a common manner, a seventh elastic element is arranged between the U-shaped lock rod 6031 and the sliding seat 601, the seventh elastic element is a return spring, the guide shafts are used for limiting the movement track of the U-shaped lock rod 6031, an electromagnet 701 is mounted on the side of the sliding seat 601 close to the U-shaped lock rod 6031, and a magnetic block matched with the electromagnet 701 is arranged on one side of the U-shaped lock rod 6031.

[0026] The second elastic wedge block 801 is symmetrically and slidably connected to the top of the first U-shaped frame 205, a sliding rod 802 is symmetrically and slidably connected in the mounting frame 201, the mounting seat 401 is fixedly connected with the sliding rod 802 on the same side, the eighth elastic member is arranged between the sliding rod 802 and the mounting frame 201, the eighth elastic member is a return spring, the side, away from the mounting frame 201, of the sliding rod 802 is fixedly connected with one end of the rectangular tube 803 through a support plate, the inner wall of the rectangular tube 803 is slidably connected with the locking frame 804, the end, away from the rectangular tube 803, of the locking frame 804 is slidably clamped into the first U-shaped frame 205, the ninth elastic member is arranged between the end, close to the first U-shaped frame 205, of the locking frame 804 and the first U-shaped frame 205, the ninth elastic member is a return spring, the side, away from the mounting frame 201, of the locking frame 804 is provided with the first tooth-shaped groove matched with the second elastic wedge block 801.

[0027] The end, close to the rectangular tube 803, of the locking frame 804 is fixedly connected with the sliding block 805, the rectangular tube 803 is provided with the positioning groove matched with the sliding block 805, and the sliding block 805 slides in the positioning groove when the locking frame 804 moves.

[0028] The third elastic wedge block 901 is symmetrically mounted on the mounting frame 201, the side, close to the mounting frame 201, of the locking frame 804 is provided with the second tooth-shaped groove matched with the third elastic wedge block 901, and the third elastic wedge block 901 is used for limiting the position of the locking frame 804.

[0029] Initially, the hydraulic cylinder 202 is in a contracted state, the limiting pin 208 is inserted into the limiting hole, away from the driving shaft 203, of the second U-shaped frame 301, the convex shafts on the rectangular frame 207 are clamped into the bottom ends of the corresponding guide rods 206, at the moment, there is a gap between the bottom of the extrusion wheel 305 and the top of the positioning wheel 6021, the second U-shaped frame 301 drives the pulling rope to be in a tensioned state, the pulling rope limits the guide wheel 403, so that the guide wheel 403 cannot rotate, and there is a gap between the locking toothed plate 307 and the locking wheel 308, the diameter of the bent part of the reinforcing steel bar 100 is determined by manual judgment, when adjustment is not needed, the driving hydraulic cylinder 202 bends the reinforcing steel bar 100.

[0030] When it is necessary to reduce the diameter of the bent part of the steel bar 100, the limiting pin 208 is pulled out of the limiting hole of the second U-shaped frame 301, the rectangular frame 207 is no longer limited, then the two rectangular frames 207 are pushed to slide horizontally on the surface of the second U-shaped frame 301 and approach each other, when the two rectangular frames 207 slide, the convex shafts thereon extrude the inner wall of the guide rod 206, the guide rod 206 is driven to rotate around the connecting part of the first U-shaped frame 205 as the center, after the guide rod 206 rotates, a gap is generated between the inner wall bottom end of the guide rod 206 and the convex shaft, the greater the rotating angle of the guide rod 206 is, the greater the gap between the inner wall bottom end of the guide rod 206 and the convex shaft is, after the rectangular frame 207 is adjusted to the appropriate position, the limiting pin 208 is inserted into the limiting hole of the second U-shaped frame 301 to limit the rectangular frame 207, then the steel bar 100 is placed in the gap between the extrusion wheel 305 and the positioning wheel 6021, the hydraulic cylinder 202 and the electromagnet 701 are started, the electromagnet 701 adsorbs the magnetic block on the Z-shaped lock rod 6031, the magnetic block drives the Z-shaped lock rod 6031 to move to the side close to the electromagnet 701, at this time, the seventh elastic member is contracted under the action of force, after the Z-shaped lock rod 6031 moves, the bottom ends of the two sides thereof are clamped into the second lock grooves of the two sliding plates 602 respectively, at this time, the vertical surface of the Z-shaped lock rod 6031 is in contact with the vertical surface of the second lock groove, thereby limiting the two sliding plates 602, so that the two sliding plates 602 cannot approach each other, at the same time, the movable end of the hydraulic cylinder 202 extends and drives the convex ring 204 to move through the driving shaft 203, after the convex ring 204 moves, it is in contact with and extrudes the sliding ring 309, the sliding ring 309 is driven to slide the special-shaped frame 306 to the obliquely downward, after the special-shaped frame 306 moves, the third elastic member is contracted, the special-shaped frame 306 drives the locking tooth plate 307 to move, after the locking tooth plate 307 moves, it is engaged with the locking wheel 308, so that the locking wheel 308 limits the guide rod 206 through the rotating shaft, the guide rod 206 is limited from rotating, at the same time, the sliding ring 309 is in contact with and extrudes the second U-shaped frame 301, the second U-shaped frame 301 is driven to move the rectangular frame 207 and the cross rod 302 to the obliquely downward, at this time, the first elastic member between the second U-shaped frame 301 and the mounting frame 201 is contracted, after the rectangular frame 207 moves, the convex shaft thereon extrudes the inner wall of the guide rod 206, since the guide rod 206 cannot rotate at this time, the two guide rods 206 drive the first U-shaped frame 205 to move, the guide rod 206 drives the moving distance of the first U-shaped frame 205 to become a constant value through the limitation of the locking tooth plate 307 to the locking wheel 308, the first U-shaped frame 205 drives the second elastic wedge-shaped block 801 to slide to the obliquely downward, when the second elastic wedge-shaped block 801 slides, it is in contact with and extrudes the first tooth-shaped groove of the locking frame 804, the second elastic wedge-shaped block 801 is contracted under the action of force and is clamped into the next first tooth-shaped groove, at this time, the sliding rod 802 abuts against the bottom of the mounting frame 201, the sliding rod 802 cannot move downward, at the same time, the cross rod 302 drives the extrusion wheel 305 to move through the guide rod 303, after the extrusion wheel 305 moves, it extrudes the surface of the steel bar 100,The positioning wheel 6021 applies a supporting force to the bottom of the reinforcing steel bar 100, so that the reinforcing steel bar 100 is bent under the force, at this time, the sliding plate 602 is limited and cannot move, the sliding plate 602 drives the positioning wheel 6021 to stably support the bottom of the reinforcing steel bar 100, while the second U-shaped frame 301 slides obliquely upward, the second U-shaped frame 301 no longer pulls the pull rope, the pull rope is released from the limitation, so that the guide wheel 403 can move, the guide wheel 403 releases the rotation through the fourth elastic piece and winds the pull rope, and the guide wheel 403 drives the elastic pawl in the limiting component to rotate, the elastic pawl continuously jumps along the surface of the ratchet wheel, and the one-way gear does not rotate in this process; when the first extrusion of the reinforcing steel bar 100 is completed, the electromagnet 701 is turned off, the electromagnet 701 no longer adsorbs the magnetic block on the shaped lock rod 6031, the seventh elastic piece drives the shaped lock rod 6031 to slide and reset, the shaped lock rod 6031 is reset and separated from the second lock groove, so that the two sliding plates 602 can move, the movable end of the hydraulic cylinder 202 is retracted to drive the convex ring 204 to move obliquely upward, the convex ring 204 moves away from the second U-shaped frame 301, at this time, the second U-shaped frame 301 and the sliding ring 309 are separated from the limitation of the convex ring 204 and can move, the second U-shaped frame 301 slides and resets through the first elastic piece, the second U-shaped frame 301 drives the guide rod 303 to reset through the cross rod 302, the guide rod 303 drives the extrusion wheel 305 to reset, and at the same time, the special-shaped frame 306 drives the locking tooth plate 307 and the sliding ring 309 to slide and reset through the third elastic piece, the locking tooth plate 307 is reset and moves away from the locking wheel 308 and no longer limits the locking wheel 308, so that the guide rod 206 can also move, the convex ring 204 moves and contacts and extrudes the first U-shaped frame 205, the first U-shaped frame 205 drives the two guide rods 206 and the second elastic wedge block 801 to move, the inner wall bottom of the two guide rods 206 contacts and extrudes the convex shaft on the rectangular frame 207, the two rectangular frames 207 continue to move obliquely upward and jointly drive the second U-shaped frame 301 to move and drive the guide rod 303 to move through the cross rod 302, the guide rod 303 drives the extrusion wheel 305 to move, at this time, the vertical surface of the second elastic wedge block 801 contacts the vertical surface of the first tooth-shaped groove of the locking frame 804, the second elastic wedge block 801 moves and can drive the locking frame 804 to slide obliquely upward by extruding the first tooth-shaped groove of the locking frame 804, the locking frame 804 drives the sliding block 805 to slide, the locking frame 804 slides and the second tooth-shaped groove thereon extrudes the third elastic wedge block 901, the third elastic wedge block 901 is retracted and slides under the force, when the locking frame 804 no longer moves, the third elastic wedge block 901 is released and clamped into the remaining second tooth-shaped grooves to limit the locking frame 804, so that the locking frame 804 cannot move obliquely downward; while the convex ring 204 moves obliquely upward, the second U-shaped frame 301 moves obliquely upward and pulls the pull rope, the pull rope drives the guide wheel 403 to rotate, the guide wheel 403 drives the elastic pawl in the limiting component to reset, the elastic pawl extrudes the ratchet wheel to drive the ratchet wheel to rotate,The one-way gear drives the two slide rods 304 to move close to each other through the first rack, so that the second elastic member is contracted. When the two slide rods 304 move, the first lock grooves thereon extrude the adjacent first elastic wedge blocks 502, the first elastic wedge blocks 502 are contracted under the force and clamped into the remaining first lock grooves, the two slide rods 304 drive the adjacent extrusion wheels 305 to move through the guide rods 303 respectively, the guide rods 303 slide on the corresponding cross rods 302, and the two slide rods 304 drive the two slide plates 602 to move close to each other through the corresponding telescopic shafts 603 respectively. At this time, the sixth elastic member between the two slide plates 602 is contracted under the force, the two slide plates 602 drive the adjacent positioning wheels 6021 to move respectively, then the electromagnet 701 is started, the two slide plates 602 are positioned, the distance between the two extrusion wheels 305 and the two positioning wheels 6021 is shortened after the steel bar 100 is extruded once, so that different parts of the steel bar 100 are extruded when the steel bar 100 is extruded again, and then the above steps are repeated to complete the bending work of the steel bar 100, and the adjustment of different radians of the steel bar 100 is realized.

[0031] As shown in Figures 1-12 The side, away from the mounting frame 201, of the rectangular tube 803 is fixedly connected with one end of the first unlocking rod 1001, and the side, away from the mounting frame 201, of the second elastic wedge block 801 is fixedly connected with a first protruding shaft used in cooperation with the first unlocking rod 1001. The tenth elastic member is arranged between the second elastic wedge block 801 and the first U-shaped frame 205, and the tenth elastic member is a compression spring.

[0032] The side, away from the first unlocking rod 1001, of the second elastic wedge block 801 is fixedly connected with an extrusion block 1101, and the side of the mounting frame 201 is fixedly connected with a guide frame 1102 in a symmetrical manner. The guide frame 1102 is slidably connected with a second unlocking rod 1103 used in cooperation with the extrusion block 1101, and the side of the third elastic wedge block 901 is fixedly connected with a second protruding shaft used in cooperation with the second unlocking rod 1103. The second unlocking rod 1103 is used for moving the third elastic wedge block 901.

[0033] In the process of sliding the first U-shaped frame 205 to the oblique upper side for resetting, the locking frame 804 drives the sliding block 805 to continuously move to the side close to the first U-shaped frame 205, when the sliding block 805 moves to the top end of the positioning groove of the rectangular tube 803 and the convex ring 204 resets to the initial position, the movable end of the hydraulic cylinder 202 continues to shrink, and drives the convex ring 204 to move through the drive shaft 203, the convex ring 204 moves to continue to extrude the first U-shaped frame 205, the first U-shaped frame 205 continues to drive the locking frame 804 to move to the oblique upper side through the second elastic wedge-shaped block 801, the second tooth-shaped groove of the locking frame 804 continues to extrude the inclined surface of the third elastic wedge-shaped block 901, so that the third elastic wedge-shaped block 901 shrinks, then the second tooth-shaped groove of the locking frame 804 no longer extrudes the third elastic wedge-shaped block 901, the third elastic wedge-shaped block 901 releases the sliding and is clamped into the bottom of the second tooth-shaped groove of the locking frame 804, the locking frame 804 drives the sliding block 805 to move to the oblique upper side at the same time, at this time the sliding block 805 has moved to the top end of the positioning groove of the rectangular tube 803, the sliding block 805 moves the rectangular tube 803 to the oblique upper side by extruding the positioning groove of the rectangular tube 803, the rectangular tube 803 drives the sliding rod 802, the first unlocking rod 1001 and the second unlocking rod 1103 to move to the oblique upper side, the eighth elastic member between the sliding rod 802 and the mounting frame 201 is stressed to shrink, and the sliding rod 802 drives the one-way gear in the transmission assembly 402 to move to the oblique upper side through the mounting seat 401, the one-way gear no longer contacts the adjacent first rack after moving, then the telescopic end of the hydraulic cylinder 202 drives the convex ring 204 to slide to the oblique lower side through the drive shaft 203, the convex ring 204 no longer extrudes the first U-shaped frame 205 after sliding, the first U-shaped frame 205 slides to reset under the action of its own gravity and drives the second elastic wedge-shaped block 801 to slide to the oblique lower side, at this time the third elastic wedge-shaped block 901 is clamped into the locking frame 804 to limit the locking frame 804, the locking frame 804 keeps the rectangular tube 803 stable through the sliding block 805, the rectangular tube 803 keeps the first unlocking rod 1001 stable, when the second elastic wedge-shaped block 801 slides to the oblique lower side, the first protruding shaft on the second elastic wedge-shaped block 801 contacts and extrudes the first unlocking rod 1001, the first protruding shaft drives the second elastic wedge-shaped block 801 to slide horizontally to the side close to the second unlocking rod 1103, at this time the tenth elastic member between the second elastic wedge-shaped block 801 and the first U-shaped frame 205 is stressed to extend, the second elastic wedge-shaped block 801 slides out of the first tooth-shaped groove of the locking frame 804 at the same time, and the second elastic wedge-shaped block 801 drives the extrusion block 1101 to move, the extrusion block 1101 moves to extrude the second unlocking rod 1103 to make the second unlocking rod 1103 slide to the side close to the mounting frame 201, the second unlocking rod 1103 slides to extrude the second protruding shaft of the third elastic wedge-shaped block 901 at the bottom, the second protruding shaft drives the third elastic wedge-shaped block 901 to slide to the side away from the locking frame 804, the third elastic wedge-shaped block 901 slides out of the second tooth-shaped groove of the locking frame 804,At this time, the locking frame 804 is movable, the ninth elastic member between the locking frame 804 and the first U-shaped frame 205 is released to drive the locking frame 804 to reset, and the locking frame 804 no longer extrudes the positioning groove of the rectangular pipe 803 after resetting, so that the corresponding sliding rod 802 is moved after the rectangular pipe 803 is released from the limitation, at this time, the sliding rod 802 is reset by the eighth elastic member, the sliding rod 802 drives the one-way gear in the transmission assembly 402 to move and reset through the mounting seat 401, the one-way gear is engaged with the adjacent first rack, the steel bar 100 bent the first time is bent again, and the steel bar 100 with a suitable bending degree is obtained through repeated operation, and then the bent steel bar 100 is taken off.

[0034] When it is necessary to reset the sliding rod 304 and the sliding plate 602, the electromagnet 701 is turned off, so that the f-shaped lock rod 6031 is separated from the second lock groove of the sliding plate 602, the pulling frame 501 is manually pulled away from the mounting frame 201, the first elastic wedge block 502 is moved by the pulling frame 501, the first elastic wedge block 502 is moved and separated from the corresponding first lock groove, the limitation on the sliding rod 304 is released, the two sliding rods 304 are reset by the second elastic member after being separated from the limitation, the sliding rod 304 drives the adjacent extrusion wheel 305 to slide and reset through the guide rod 303, the two sliding plates 602 are reset by the sixth elastic member between the two sliding plates 602 after being separated from the limitation, the sliding plate 602 drives the adjacent positioning wheel 6021 to reset, respectively, the sliding rod 304 and the sliding plate 602 jointly drive the corresponding telescopic shaft 603 to move and reset (this process can be performed when the one-way gear is engaged with the first rack or not engaged with the first rack, and due to the characteristics of the one-way gear, the one-way gear cannot drive the rotating shaft connected thereto to rotate), then the pulling frame 501 is manually released and the electromagnet 701 is started, the electromagnet 701 drives the f-shaped lock rod 6031 to be re-engaged into the second lock groove of the sliding plate 602; the pulling frame 501 is reset by the fifth elastic member, the first elastic wedge block 502 is reset by the pulling frame 501, and the first elastic wedge block 502 is engaged into the first lock groove, so as to limit the sliding rod 304 and the sliding plate 602, and the above steps are repeated to complete the bending process of the steel bar 100, and the bending diameter of the bent steel bar 100 can be conveniently adjusted by the device, so that steel bars 100 of different specifications and models can be produced.

[0035] The above is only the preferred embodiment of the present application, and it should be pointed out that those skilled in the art can make some improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A device for bending reinforcing bars, comprising a worktable (1), characterized in that: The workbench (1) is provided with a first adjusting mechanism, the first adjusting mechanism comprises a mounting frame (201), the workbench (1) is fixedly connected with the mounting frame (201), a hydraulic cylinder (202) is arranged on the upper portion of the mounting frame (201), the movable end of the hydraulic cylinder (202) is fixedly connected with a driving shaft (203), the driving shaft (203) is slidably connected with the mounting frame (201), a bending mechanism is arranged on the mounting frame (201) and matched with the driving shaft (203), a convex ring (204) is fixedly connected to the lower portion of the outer wall of the driving shaft (203), a first U-shaped frame (205) is slidably connected with the convex ring (204), a guide rod (206) is symmetrically hinged to the side of the first U-shaped frame (205) away from the mounting frame (201) through a rotating shaft, a through slot is formed in the guide rod (206), a rectangular frame (207) is symmetrically arranged on one side of the mounting frame (201), one end of the convex shaft is fixedly connected with the rectangular frame (207), the other end of the convex shaft is slidably connected in the through slot of the guide rod (206), and a limiting pin (208) is slidably connected in the rectangular frame (207).

2. A reinforcing bar bending device according to claim 1, wherein: The bending mechanism comprises a second U-shaped frame (301), the second U-shaped frame (301) is slidably connected with the convex ring (204) on the driving shaft (203), the second U-shaped frame (301) is slidably connected with the mounting frame (201), a first elastic member is arranged between the second U-shaped frame (301) and the mounting frame (201), the rectangular frame (207) is slidably connected with the second U-shaped frame (301), a plurality of limiting holes are formed in the second U-shaped frame (301) and matched with the limiting pin (208), a horizontal rod (302) is fixedly connected to the two sides of the second U-shaped frame (301), a guide rod (303) is slidably connected to the horizontal rod (302), a sliding rod (304) is slidably connected to the lower portion of the guide rod (303), a second elastic member is arranged between the sliding rod (304) and the mounting frame (201), an extrusion wheel (305) is rotatably connected to the end of the guide rod (303) away from the horizontal rod (302), a special-shaped frame (306) is slidably connected to one side of the mounting frame (201), a third elastic member is arranged between the special-shaped frame (306) and the mounting frame (201), a locking toothed plate (307) is fixedly connected to the upper portion of the special-shaped frame (306), a locking wheel (308) is fixedly connected to the rotating shaft of the guide rod (206) and matched with the locking toothed plate (307), a sliding ring (309) is fixedly connected to the bottom of one side of the special-shaped frame (306), the inner wall of the sliding ring (309) is slidably connected with the outer wall of the driving shaft (203), and the sliding ring (309) is matched with the convex ring (204) and the second U-shaped frame (301).

3. A device for bending rebar as defined in claim 2, wherein: The second adjusting mechanism is arranged on the mounting frame (201), and the second adjusting mechanism comprises mounting seats (401). Two mounting seats (401) are symmetrically arranged at the middle part of the mounting frame (201) and away from the workbench (1). The two mounting seats (401) are provided with transmission assemblies (402) away from the mounting frame (201). The mounting seat (401) is fixedly connected with a U-shaped frame (4021). The two U-shaped frames (4021) are rotatably connected with guide wheels (403). The fourth elastic element is arranged between the U-shaped frame (4021) and the guide wheel (403). The guide wheel (403) is provided with a limiting assembly for limiting the working state of the transmission assembly (402). The guide wheel (403) is connected with one end of a pull rope. The other end of the pull rope is fixedly connected with the second U-shaped frame (301).

4. A device for bending rebar according to claim 3, wherein: The mounting frame (201) is provided with a pulling frame (501) away from the workbench (1). The fifth elastic element is arranged between the pulling frame (501) and the mounting frame (201) close to the mounting frame (201). The first elastic wedge-shaped block (502) is symmetrically fixedly connected to the pulling frame (501) close to the mounting frame (201). The sliding rod (304) is provided with a plurality of first locking grooves close to the pulling frame (501).

5. A device for bending rebar as defined in claim 4, wherein: The mounting frame (201) is fixedly connected with a sliding seat (601) away from the workbench (1) at the lower part. The sliding seat (601) is symmetrically and slidably connected with sliding plates (602). The sixth elastic element is arranged between the two sliding plates (602). The sliding plate (602) is rotatably connected with a positioning wheel (6021) away from the sliding seat (601) and close to the mounting frame (201). The sliding plate (602) is fixedly connected with an extension shaft (603). The extension shaft (603) is fixedly connected with the sliding rod (304) away from the sliding plate (602). The sliding seat (601) is fixedly connected with guide shafts. The U-shaped locking rod (6031) is slidably connected with the guide shafts. The seventh elastic element is arranged between the U-shaped locking rod (6031) and the sliding seat (601). The sliding seat (601) is provided with an electromagnet (701) close to the U-shaped locking rod (6031). The U-shaped locking rod (6031) is provided with a magnetic block matched with the electromagnet (701).

6. A device for bending rebar as defined in claim 5, wherein: The top of the first U-shaped frame (205) is symmetrically connected with a second elastic wedge block (801) in sliding mode, the mounting frame (201) is symmetrically connected with a sliding rod (802) in sliding mode, the mounting seat (401) is fixedly connected with the sliding rod (802) on the same side, the eighth elastic member is arranged between the sliding rod (802) and the mounting frame (201), the side, away from the mounting frame (201), of the sliding rod (802) is fixedly connected with one end of a rectangular tube (803) through a support plate, the inner wall of the rectangular tube (803) is slidably connected with a locking frame (804), the end, away from the rectangular tube (803), of the locking frame (804) is slidably connected in the first U-shaped frame (205), the ninth elastic member is arranged between the end, close to the first U-shaped frame (205), of the locking frame (804) and the first U-shaped frame (205), and the side, away from the mounting frame (201), of the locking frame (804) is provided with a first tooth-shaped groove matched with the second elastic wedge block (801).

7. A device for bending rebar as defined in claim 6, wherein: The end, close to the rectangular tube (803), of the locking frame (804) is fixedly connected with a sliding block (805), and the rectangular tube (803) is provided with a positioning groove matched with the sliding block (805).

8. A device for bending rebar according to claim 7, wherein: The mounting frame (201) is symmetrically provided with a third elastic wedge block (901), and the side, close to the mounting frame (201), of the locking frame (804) is provided with a second tooth-shaped groove matched with the third elastic wedge block (901).

9. A device for bending rebar as defined in claim 8, wherein: The side, away from the mounting frame (201), of the rectangular tube (803) is fixedly connected with one end of a first unlocking rod (1001), and the side, away from the mounting frame (201), of the second elastic wedge block (801) is fixedly connected with a first protruding shaft matched with the first unlocking rod (1001), and the tenth elastic member is arranged between the second elastic wedge block (801) and the first U-shaped frame (205).

10. A device for bending rebar as defined in claim 9, wherein: The side, away from the first unlocking rod (1001), of the second elastic wedge block (801) is fixedly connected with an extrusion block (1101), one side of the mounting frame (201) is fixedly connected with a guide frame (1102) in symmetry, the guide frame (1102) is slidably connected with a second unlocking rod (1103) matched with the extrusion block (1101) in the guide frame (1102), and the side of the third elastic wedge block (901) is fixedly connected with a second protruding shaft matched with the second unlocking rod (1103).

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