CN108435965B - Full-automatic stirrup device of buckling - Google Patents
Full-automatic stirrup device of buckling Download PDFInfo
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- CN108435965B CN108435965B CN201810365042.3A CN201810365042A CN108435965B CN 108435965 B CN108435965 B CN 108435965B CN 201810365042 A CN201810365042 A CN 201810365042A CN 108435965 B CN108435965 B CN 108435965B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F1/00—Bending wire other than coiling; Straightening wire
- B21F1/004—Bending wire other than coiling; Straightening wire by means of press-type tooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F11/00—Cutting wire
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F23/00—Feeding wire in wire-working machines or apparatus
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- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention discloses a full-automatic stirrup bending device which comprises a steel bar conveying mechanism, a steel bar bending mechanism and a steel bar shearing mechanism, wherein the steel bar conveying mechanism is arranged on the steel bar conveying mechanism; the steel bar bending mechanism comprises a base, a steel bar clamping mechanism, a bending driving mechanism and a synchronous driving mechanism; the steel bar clamping mechanism comprises an upper clamping block, a lower clamping block and a clamping driving mechanism, wherein the upper clamping block and the lower clamping block are arranged in a vertically symmetrical mode; the bending driving mechanism comprises a bending head and a bending power mechanism; the steel bar shearing mechanism is arranged on the base, is positioned between the steel bar conveying mechanism and the bending driving mechanism, and comprises a fixed shear, a movable shear and a shearing driving mechanism for driving the movable shear to be close to the fixed shear to do shearing action, wherein the movable shear is positioned above the fixed shear; and a telescopic driving mechanism for driving the steel bar shearing mechanism to move telescopically is further arranged in the base. This stirrup device of buckling can buckle and cut the reinforcing bar when carrying the reinforcing bar, has improved the production efficiency of stirrup greatly.
Description
Technical Field
The invention relates to automatic production equipment for construction steel bars, in particular to a full-automatic stirrup bending device.
Background
The stirrups are used for meeting the shear strength of the oblique section and connecting the stressed main reinforcement and the reinforcement of the mixed reinforcement framework in the compression area. The stirrup is usually rectangular and is formed by bending one section of straight steel bar, and the two ends of the section of straight steel bar are crossed at one corner of the rectangular stirrup and are bent into two binding sections for being bound and fixed with the main bar. In the prior art, stirrups are produced by stirrup production equipment, bundled reinforcing steel bars are conveyed to a bending station by a conveying mechanism, the bending station is provided with a bending mechanism, the conveying mechanism intermittently conveys the reinforcing steel bars to the bending station, the steel bars are stopped when conveyed for a certain length, the bending mechanism is waited to bend the reinforcing steel bars, then a section of the reinforcing steel bars are conveyed until the stirrups are bent and formed, the reinforcing steel bars are cut off, and continuous production is realized. The existing stirrup production equipment has the following defects:
(1) when the bending mechanism bends the reinforcing steel bar, the conveying mechanism must be stopped, namely the conveying mechanism and the bending mechanism need to work in sequence and cannot work at the same time, so that the production efficiency is still low.
(2) Because the shearing mechanism is located at a fixed position, is located behind the bending mechanism and is separated by a longer distance, after the stirrup is bent and formed, the steel bar needs to back for a certain distance to be close to the shearing mechanism to be sheared, and the steel bar is conveyed forwards after the shearing is finished.
Disclosure of Invention
The invention aims to overcome the existing problems and provides a full-automatic stirrup bending device which can bend and shear a steel bar while conveying the steel bar, so that the production efficiency of the stirrup is greatly improved.
The purpose of the invention is realized by the following technical scheme:
a full-automatic stirrup bending device comprises a steel bar conveying mechanism, a steel bar bending mechanism and a steel bar shearing mechanism;
the steel bar bending mechanism comprises a base, a steel bar clamping mechanism and a bending driving mechanism which are arranged on the base, and a synchronous driving mechanism for driving the base to reciprocate along the conveying direction of the steel bars; the steel bar clamping mechanism comprises an upper clamping block, a lower clamping block and a clamping driving mechanism for driving the upper clamping block and the lower clamping block to clamp or loosen the steel bar, wherein the upper clamping block and the lower clamping block are arranged vertically and symmetrically; the bending driving mechanism comprises a bending head and a bending power mechanism for driving the bending to rotate;
the tail ends of the upper clamping block and the lower clamping block are semicircular bending and turning supporting parts along the conveying direction of the steel bars, and the bending heads are arranged on the outer sides of the bending and turning supporting parts; when the reinforcing steel bar bending mechanism bends the reinforcing steel bar, the base moves forwards at a constant speed along the conveying direction of the reinforcing steel bar under the driving of the synchronous driving mechanism;
the steel bar shearing mechanism is arranged on the base, is positioned between the steel bar conveying mechanism and the bending driving mechanism, and comprises a fixed shear, a movable shear and a shearing driving mechanism for driving the movable shear to be close to the fixed shear to do shearing action, wherein the movable shear is positioned above the fixed shear; and a telescopic driving mechanism for driving the steel bar shearing mechanism to move telescopically is further arranged in the base.
The working principle of the fully automatic stirrup bending device is described in detail below by taking the production of rectangular stirrups as an example:
generally, under the transportation of the reinforcing bar transportation mechanism, the reinforcing bar passes through between the upper clamping block and the lower clamping block along the transportation direction of the reinforcing bar, wherein, after moving to a certain distance, that is, after the front end of the reinforcing bar is far away from the upper clamping block and the lower clamping block by a specific distance, the clamping driving mechanism drives the upper clamping block and the lower clamping block to be clamped on the reinforcing bar, and at the same time, the synchronous driving mechanism drives the base to move along the transportation direction of the reinforcing bar at an equal speed, so that the reinforcing bar clamping mechanism, the reinforcing bar shearing mechanism and the bending driving mechanism can move synchronously with the reinforcing bar, thereby keeping relatively still.
In the process that the base synchronously moves along the conveying direction of the steel bars, the bending power mechanism drives the bending head to rotate towards the direction close to the steel bars, so that the bending head presses on the steel bars, the steel bars bend towards the supporting part around the bending turns, the bending angle is greater than 90 degrees, and a first hook binding section bound with the main steel bars is formed; the whole bending driving mechanism is static relative to the steel bars, so that the steel bars can be bent without stopping, and the production efficiency of the stirrups is improved. In addition, in the process of bending, the upper clamping block and the lower clamping block are tightly clamped on the steel bar, so that the steel bar can be stably bent, the steel bar is prevented from shaking, and normal bending work is prevented. Specially, in the reinforcing bar in-process of buckling, in order not to hinder the work of buckling of reinforcing bar, in advance, flexible actuating mechanism can drive reinforcing bar shearing mechanism and remove certain distance toward the inside of base to prevent to decide to cut and move the reinforcing bar of cutting in with the bending and take place to interfere.
After the first hook binding section is bent, the bending power mechanism drives the bending head to reset, the upper clamping block and the lower clamping block loosen the steel bars, then the synchronous driving mechanism drives the base to move for a certain distance in the direction opposite to the conveying direction of the steel bars, then the clamping driving mechanism drives the upper clamping block and the lower clamping block to clamp on the steel bars, and at the moment, the distance from the clamping point on the steel bars to the first hook binding section is the length of one side of the rectangular stirrup; after the upper clamping block and the lower clamping block are clamped on the steel bars, the synchronous driving mechanism drives the base to move along the conveying direction of the steel bars at the same speed, so that the steel bar clamping mechanism, the steel bar shearing mechanism and the bending driving mechanism can move synchronously with the steel bars, and the steel bar clamping mechanism, the steel bar shearing mechanism and the bending driving mechanism are kept relatively still.
Similarly, in the process of synchronously moving along the conveying direction of the steel bar, the bending power mechanism drives the bending head to rotate towards the direction close to the steel bar, so that the bending head is pressed on the steel bar, the steel bar is bent towards the supporting part around the bending corner, and the bending angle is equal to 90 degrees, so that a first section of bending edge is formed; then, the bending head is reset, and the upper clamping block and the lower clamping block loosen the steel bars; then, the synchronous driving mechanism drives the base to move for a certain distance along the direction opposite to the conveying direction of the steel bars again, after the upper clamping block and the lower clamping block are clamped on the steel bars, the bending driving mechanism and the steel bars move synchronously under the driving of the synchronous driving mechanism, and a second section of bent edge is formed under the driving of the bending power mechanism; and then finishing the processing of the third section of bending edge and the fourth section of bending edge according to the bending principle of the first section of bending edge and the second section of bending edge.
Particularly, as a second hook binding section for binding with the main reinforcement needs to be generated, the bending angle of the fourth bending edge is larger than 90 degrees, so that a second hook is generated, then the shearing mechanism shears the reinforcement at the tail end of the second hook, so that a second hook binding section in the rectangular stirrup is formed, the length of the second hook binding section is equal to that of the first hook binding section, and the bending work of one stirrup is completed. Wherein, the process that the reinforcing bar shearing mechanism was cut at the terminal end of the second crotch of reinforcing bar is: when the reinforcing steel bars are conveyed forwards, firstly, the telescopic driving mechanism drives the reinforcing steel bar shearing mechanism to extend out of the base and approach the reinforcing steel bars until the reinforcing steel bars are positioned between the fixed shears and the movable shears, then the shearing driving mechanism drives the movable shears to move towards the direction of the fixed shears, so that the movable shears extrude the reinforcing steel bars onto the fixed shears, and then the reinforcing steel bars are sheared; in the process, the reinforcing steel bar shearing mechanism is arranged on the base, and under the driving of the synchronous driving mechanism, the synchronous movement of the reinforcing steel bars is carried out while the shearing work is carried out, so that the production efficiency of the stirrups is improved.
In a preferred embodiment of the present invention, the bending power mechanism includes a rotating ring, a bending power motor for driving the rotating ring to rotate, and a bending power assembly, wherein the bending head is fixedly disposed on the rotating ring and extends outward; one end of the rotating ring provided with the bending head extends out of the base, and the other end of the rotating ring is embedded in the base;
the bending power assembly comprises a driving gear and a driven gear, the driving gear is fixed on an output shaft of the bending power motor, and the driven gear is fixedly connected with one end, embedded in the base, of the rotating ring. Through the structure, the rotating ring rotates under the driving of the bending power motor, so that the bending head is driven to rotate towards the direction of the steel bar, and the steel bar is bent.
In a preferred aspect of the present invention, an inner ring of the rotating ring is provided with a mounting disc, the mounting disc is located in one end of the rotating ring extending out of the base, and the mounting disc is provided with a sliding groove for sliding up and down;
the upper clamping block and the lower clamping block respectively comprise a clamping part, a sliding part and a stress part which are sequentially connected, and the sliding part is positioned between the clamping part and the stress part; the sliding part is arranged in a sliding groove of the mounting plate. Thus, under the driving of the clamping driving mechanism, the upper clamping block and the lower clamping block can slide up and down along the sliding groove of the mounting disc, so that the reinforcing steel bars are clamped and loosened.
According to a preferable scheme of the invention, the clamping driving mechanism comprises a clamping power mechanism and a loosening power mechanism, the clamping power mechanism comprises an upper clamping spring and a lower clamping spring, the upper end of the upper clamping spring abuts against the inner annular wall of one end of the rotating ring embedded in the base, and the lower end of the upper clamping spring abuts against the spring stress surface of the stress part of the upper clamping block; the lower end of the lower clamping spring abuts against the inner ring wall of one end of the rotating ring embedded in the base, and the upper end of the lower clamping spring abuts against the spring stress surface of the stress part of the lower clamping block;
the loosening power mechanism comprises a push-away piece and a push-away power piece, and one side of the upper clamping block, which is opposite to the stress part of the lower clamping block, is provided with an inclined push-away stress surface; the upper end and the lower end of the push-away piece are also provided with inclined push-away surfaces matched with the push-away force-bearing surfaces, and the inclination of the push-away surfaces is the same as that of the push-away force-bearing surfaces.
When the push-open power piece drives the push-open piece to be close to the upper clamping block and the lower clamping block, the push-open piece slides inwards along the push-open stress surfaces of the upper clamping block and the lower clamping block; on the contrary, when the push-open power piece drives the push-open piece in the direction away from the upper clamping block and the lower clamping block, the push-open piece slides outwards along the push-open stress surfaces of the upper clamping block and the lower clamping block, because the push-open stress surfaces of the upper clamping block and the lower clamping block are oppositely arranged, and an upper clamping spring and a lower clamping spring are respectively arranged between the upper clamping block and the rotating ring, when the push-open piece slides outwards along the two oppositely arranged push-open stress surfaces, the upper clamping spring and the lower clamping spring are turned to a normal state from a pressed state, elastic potential energy is released, so that the upper clamping block and the lower clamping block are driven to move towards each other, and the clamping action is completed.
Preferably, the push-away power piece is a loosening power motor fixedly arranged in the base, an output shaft of the loosening power motor is provided with an eccentric wheel, and a wheel rim of the eccentric wheel abuts against one end, far away from the upper clamping block and the lower clamping block, of the push-away piece.
According to a preferable scheme of the invention, the synchronous driving mechanism comprises a synchronous driving motor and a synchronous driving assembly, the synchronous driving assembly comprises a screw rod and a screw nut, one end of the screw rod is fixedly connected to the output end of the synchronous driving motor, and the other end of the screw rod penetrates through the screw nut; the feed screw nut is fixedly arranged at the lower end of the base; two groups of linear sliding structures are arranged below the base and comprise a sliding block arranged at the lower end of the base and a guide rail arranged on the bottom plate and matched with the sliding block, and the sliding block is positioned on two sides of the screw rod nut. Under the drive of the synchronous drive motor, the base reciprocates along the guide rail, so that the bending drive mechanism can synchronously move with the reinforcing steel bars and keep relatively static, the reinforcing steel bars can be bent without stopping, and the production efficiency of the stirrups can be greatly improved.
According to a preferable scheme of the invention, two ends of the fixed shears and the movable shears are respectively a shearing part and a driving part for shearing reinforcing steel bars, and the middle parts of the fixed shears and the movable shears are hinged with each other;
the shearing driving mechanism comprises a hydraulic driving cylinder, a telescopic rod of the hydraulic driving cylinder is hinged to a driving part of the movable shear, and a cylinder body of the hydraulic driving cylinder is hinged to a driving part of the fixed shear. Because the fixed shears are fixed, the shearing part of the movable shears can rotate around the hinge point in the middle part under the driving of the hydraulic driving cylinder, and then shearing work is carried out.
In a preferred embodiment of the present invention, the telescopic driving mechanism includes a telescopic driving motor and a telescopic driving assembly, the telescopic driving assembly includes a driving wheel fixed on an output shaft of the telescopic driving motor and a rack engaged with the driving wheel, the rack extends along a direction perpendicular to a conveying direction of the steel bar, is fixed at one end of the fixed shears, and faces downward; the lower side of the fixed shears is provided with two sliding rails, the upper ends of the two sliding rails are matched in a sliding groove of the lower end face of the fixed shears, and the lower ends of the two sliding rails are fixed on the base. Through the structure, after the steel bar is bent into the second hook, the steel bar shearing mechanism moves towards the direction close to the steel bar under the driving of the telescopic driving motor along with the synchronous movement of the steel bar, so that the steel bar is positioned in the shearing range of the fixed shears and the movable shears, and then shearing work is carried out; after the reinforcing bar is cut off, in order not to hinder the normal transport of reinforcing bar, flexible driving motor drive reinforcing bar shears the mechanism and resets.
In a preferred embodiment of the present invention, the end of the cutting portion of the fixed shears is provided with an inclined avoidance guide surface, so that when the reinforcing steel bar shearing mechanism approaches the reinforcing steel bar, the inclined avoidance guide surface can play a role of avoiding the reinforcing steel bar, and can guide the reinforcing steel bar to the upper side of the fixed shears.
Compared with the prior art, the invention has the following beneficial effects:
1. in the process of bending the stirrup, the whole steel bar bending mechanism and the whole steel bar shearing mechanism are static relative to the steel bars, so that the steel bars can be bent and sheared without stopping, and the production efficiency of the stirrup can be greatly improved.
2. Through setting up reinforcing bar clamping mechanism for go up and press from both sides tight piece down and can press from both sides tightly the reinforcing bar, thereby can buckle the reinforcing bar steadily, prevent that the reinforcing bar from taking place to rock, hindering normal work of buckling.
Drawings
Fig. 1-2 are schematic front views of the fully automatic stirrup bending device according to the present invention, wherein fig. 1 is a schematic diagram of the bending operation just started, and fig. 2 is a schematic diagram of the shearing operation after the bending operation is completed.
Fig. 3 is a sectional view taken along a-a in fig. 1.
Fig. 4-5 are schematic front views of the reinforcing bar shearing mechanism in fig. 1, wherein fig. 4 is a schematic diagram before shearing and fig. 5 is a schematic diagram after shearing.
FIGS. 6-16 are front views of the stirrup-bending device of the present invention during the bending of the reinforcing bars, with the bar shearing mechanism hidden; FIG. 6 is a front view of the reinforcement bar being fed toward the bending mechanism; FIG. 7 is a front view of the upper and lower clamp blocks clamping the rebar; FIG. 8 is a front view of a bent bar as the bending mechanism moves in synchronization with the bar, forming a first hook binding section; fig. 9 is a front view of the entire base moving in the opposite direction of the rebar delivery; FIG. 10 is a front view of the bending mechanism moving synchronously with the bending of the reinforcing bar to form a first bent segment; fig. 11 is a front view of the entire base once again moving in the opposite direction of the rebar delivery; FIG. 12 is a front view of the bending mechanism moving synchronously with the bending of the reinforcing bar to form a second section of bent edge; FIG. 13 is a front view of the entire base moving in the opposite direction for a third time to deliver rebar; FIG. 14 is a front view of the bending mechanism moving synchronously with the bending of the reinforcing bar to form a third section of bent edge; FIG. 15 is a front view of the entire base moving in the opposite direction for a fourth time to deliver rebar; FIG. 16 is a front view of the bending mechanism moving synchronously with the bending of the reinforcing bar to form a fourth segment of a bent edge.
Figure 17 is a front view of the upper and lower clamping blocks of figure 1.
Fig. 18 is a sectional view taken along the line B-B in fig. 17.
Detailed Description
In order to make those skilled in the art understand the technical solutions of the present invention well, the following description of the present invention is provided with reference to the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
Referring to fig. 1 to 3, the full-automatic stirrup bending device in the embodiment includes a steel bar conveying mechanism, a steel bar bending mechanism, and a steel bar shearing mechanism; the reinforcing steel bar bending mechanism comprises a base 1a, a reinforcing steel bar clamping mechanism and a bending driving mechanism which are arranged on the base 1a, and a synchronous driving mechanism which drives the base 1a to reciprocate along the conveying direction of the reinforcing steel bar; the steel bar clamping mechanism comprises an upper clamping block 2a, a lower clamping block 3a and a clamping driving mechanism for driving the upper clamping block 2a and the lower clamping block 3a to clamp or loosen the steel bar, wherein the upper clamping block 2a and the lower clamping block 3a are arranged in an up-and-down symmetrical manner; the bending driving mechanism comprises a bending head 4a and a bending power mechanism for driving the bending to rotate; the tail ends of the upper clamping block 2a and the lower clamping block 3a are semicircular bending support parts 5a along the conveying direction of the reinforcing steel bars, and the bending heads 4a are arranged on the outer sides of the bending support parts 5 a; when the reinforcing steel bar bending mechanism bends the reinforcing steel bar, the base 1a moves forwards along the conveying direction of the reinforcing steel bar at a constant speed under the driving of the synchronous driving mechanism.
Referring to fig. 1 to 3, the bending power mechanism includes a rotating ring 6a, a bending power motor 7a for driving the rotating ring 6a to rotate, and a bending power assembly, and the bending head 4a is fixedly disposed on the rotating ring 6a and extends outward; one end of the rotating ring 6a provided with the bending head 4a extends out of the base 1a, and the other end is embedded in the base 1 a; the bending power assembly comprises a driving gear 8a and a driven gear 9a, the driving gear 8a is fixed on an output shaft of a bending power motor 7a, and the driven gear 9a is fixedly connected with one end, embedded in the base 1a, of the rotating ring 6 a. Through the structure, the rotating ring 6a rotates under the driving of the bending power motor 7a, so that the bending head 4a is driven to rotate towards the direction of the steel bar, and the steel bar is bent.
Referring to fig. 1-3 and 17-18, a mounting plate 10a is arranged in the inner ring of the rotating ring 6a, the mounting plate 10a is positioned in one end of the rotating ring 6a extending out of the base 1a, and a sliding groove 10-1a for sliding up and down is arranged in the mounting plate 10 a; the upper clamping block 2a and the lower clamping block 3a respectively comprise a clamping part 11a, a sliding part 12a and a stress part 13a which are sequentially connected, and the sliding part 12a is positioned between the clamping part 11a and the stress part 13 a; the sliding portion 12a is provided in the sliding groove 10-1a of the mounting plate 10 a. Thus, the upper clamping block 2a and the lower clamping block 3a can slide up and down along the sliding groove 10-1a of the mounting plate 10a under the driving of the clamping driving mechanism, thereby clamping and releasing the reinforcing steel bars.
Referring to fig. 1-3 and fig. 17-18, the clamping driving mechanism comprises a clamping power mechanism and a releasing power mechanism, the clamping power mechanism comprises an upper clamping spring 14a and a lower clamping spring 15a, the upper end of the upper clamping spring 14a abuts against the inner annular wall of one end of the rotating ring 6a embedded in the base 1a, and the lower end abuts against the spring force bearing surface of the force bearing part 13a of the upper clamping block 2 a; the lower end of the lower clamping spring 15a abuts against the inner ring wall of one end of the rotating ring 6a embedded in the base 1a, and the upper end abuts against the spring stress surface of the stress part 13a of the lower clamping block 3 a; the loosening power mechanism comprises a push-away piece 16a and a push-away power piece 17a, and an inclined push-away force-bearing surface 16-1a is arranged on one side, opposite to the force-bearing part 13a, of the upper clamping block 2a and the lower clamping block 3 a; the upper end and the lower end of the push-away piece 16a are also provided with inclined push-away surfaces matched with the push-away force-bearing surfaces 16-1a, and the inclination of the push-away surfaces is the same as that of the push-away force-bearing surfaces 16-1 a.
When the push-away power piece 17a drives the push-away piece 16a to approach the upper clamping block 2a and the lower clamping block 3a, the push-away piece 16a slides inwards along the push-away force-bearing surfaces 16-1a of the upper clamping block 2a and the lower clamping block 3a, and because the push-away force-bearing surfaces 16-1a of the upper clamping block 2a and the lower clamping block 3a are oppositely arranged, when the push-away piece 16a slides inwards along the two oppositely arranged push-away force-bearing surfaces 16-1a, the upper clamping block 2a and the lower clamping block 3a relatively move away from each other along the push-away surfaces of the push-away piece 16a, so that the upper clamping block 2a and the lower clamping block 3a are separated by a distance, and the action of releasing the reinforcing steel bar is completed, and the upper clamping spring 14a and the lower clamping spring 15a at the moment are compressed and stored with energy; conversely, when the push-away power piece 17a drives the push-away piece 16a in a direction away from the upper clamping block 2a and the lower clamping block 3a, the push-away piece 16a slides outwards along the push-away force-bearing surfaces 16-1a of the upper clamping block 2a and the lower clamping block 3a, and since the push-away force-bearing surfaces 16-1a of the upper clamping block 2a and the lower clamping block 3a are oppositely arranged and the upper clamping spring 14a and the lower clamping spring 15a are respectively arranged between the upper clamping block 2a and the lower clamping block 3a and the rotating ring 6a, when the push-away piece 16a slides outwards along the two oppositely arranged push-away force-bearing surfaces 16-1a, the upper clamping spring 14a and the lower clamping spring 15a are turned from a pressed state to a normal state, and elastic potential energy is released, so that the upper clamping block 2a and the lower clamping block 3a are driven to move towards each other and complete the clamping action.
Referring to fig. 1-3, the push-away power member 17a is a loosening power motor fixedly arranged in the base 1a, an output shaft of the loosening power motor is provided with an eccentric wheel 18a, and a rim of the eccentric wheel 18a abuts against one end of the push-away member 16a far away from the upper clamping block 2a and the lower clamping block 3 a.
Referring to fig. 1-3, the synchronous driving mechanism includes a synchronous driving motor 19a and a synchronous driving assembly, the synchronous driving assembly includes a lead screw 20a and a lead screw nut 21a, one end of the lead screw 20a is fixedly connected to the output end of the synchronous driving motor 19a, and the other end passes through the lead screw nut 21 a; the feed screw nut 21a is fixedly arranged at the lower end of the base 1 a; two groups of linear sliding structures are arranged below the base 1a, each linear sliding structure comprises a sliding block 22a arranged at the lower end of the base 1a and a guide rail 23a arranged on the bottom plate and matched with the sliding block 22a, and the sliding blocks 22a are positioned on two sides of the feed screw nut 21 a. Under the drive of the synchronous drive motor 19a, the base 1a reciprocates along the guide rail 23a, so that the bending drive mechanism can synchronously move with the steel bars and keep relatively static, the steel bars can be bent without stopping, and the production efficiency of the stirrups can be greatly improved.
Referring to fig. 1-2 and fig. 4-5, the reinforcing steel bar shearing mechanism is arranged on the base 1a and located between the reinforcing steel bar conveying mechanism and the bending driving mechanism, and includes a fixed shear 1b, a movable shear 2b and a shearing driving mechanism for driving the movable shear 2b to be close to the fixed shear 1b to do shearing action, and the movable shear 2b is located above the fixed shear 1 b; and a telescopic driving mechanism for driving the steel bar shearing mechanism to move telescopically is further arranged in the base 1 a.
Referring to fig. 1-2 and 4-5, two ends of the fixed shears 1b and the movable shears 2b are respectively a shearing part 3b and a driving part 4b for shearing reinforcing steel bars, and the middle parts of the fixed shears and the movable shears are hinged with each other; the shearing driving mechanism comprises a hydraulic driving cylinder 5b, an expansion rod of the hydraulic driving cylinder 5b is hinged on a driving part 4b of the movable shear 2b, and a cylinder body of the hydraulic driving cylinder is hinged on a driving part 4b of the fixed shear 1 b. Since the fixed shears 1b are fixed, the shearing part 3b of the movable shears 2b can rotate around the hinge point of the middle part under the driving of the hydraulic driving cylinder 5b, and then shearing work is carried out.
Referring to fig. 1-2 and 4-5, the telescopic driving mechanism comprises a telescopic driving motor and a telescopic driving assembly, the telescopic driving assembly comprises a driving wheel 6b fixed on an output shaft of the telescopic driving motor and a rack 7b meshed with the driving wheel 6b, and the rack 7b extends along a direction perpendicular to the conveying direction of the reinforcing steel bars, is fixed at one end of the fixed shears 1b and faces downwards; two sliding rails are arranged below the fixed shears 1b, the upper ends of the two sliding rails are matched in sliding grooves of the lower end faces of the fixed shears 1b, and the lower ends of the two sliding rails are fixed on the base 1 a. Through the structure, after the steel bar is bent into the second hook, the steel bar shearing mechanism moves towards the direction close to the steel bar under the driving of the telescopic driving motor along with the synchronous movement of the steel bar, so that the steel bar is positioned in the shearing range of the fixed shears 1b and the movable shears 2b, and then shearing work is carried out; after the reinforcing bar is cut off, in order not to hinder the normal transport of reinforcing bar, flexible driving motor drive reinforcing bar shears the mechanism and resets.
Referring to fig. 1-2 and 4-5, the end of the cutting portion 3b of the fixed shears 1b is provided with an inclined avoiding guide surface, so that when the reinforcing steel bar shearing mechanism approaches a reinforcing steel bar, the inclined avoiding guide surface can play a role of avoiding the reinforcing steel bar and can guide the reinforcing steel bar to the upper part of the fixed shears 1 b.
Referring to fig. 1-18, the working principle of the stirrup-bending device is described in detail in the present embodiment by taking the production of rectangular stirrups as an example:
generally, under the transportation of the reinforcing bar transportation mechanism, the reinforcing bar passes through between the upper clamping block 2a and the lower clamping block 3a along the transportation direction of the reinforcing bar, wherein, after moving to a certain distance, i.e., after the front end of the reinforcing bar is away from the upper clamping block 2a and the lower clamping block 3a by a specific distance, the clamping driving mechanism drives the upper clamping block 2a and the lower clamping block 3a to be clamped on the reinforcing bar, and at the same time, the synchronous driving mechanism drives the base 1a to move along the transportation direction of the reinforcing bar at an equal speed, so that the reinforcing bar clamping mechanism and the bending driving mechanism can move synchronously with the reinforcing bar, thereby keeping relatively still.
In the process that the base 1a moves synchronously along the conveying direction of the steel bars, the bending power mechanism drives the bending head 4a to rotate towards the direction close to the steel bars, so that the bending head 4a presses on the steel bars, the steel bars bend towards the supporting part 5a around the bending turns, the bending angle is larger than 90 degrees, and a first hook binding section bound with the main steel bars is formed; wherein, because whole actuating mechanism that buckles is static for the reinforcing bar, so the reinforcing bar need not to stop and also can carry out the work of buckling, has improved the production efficiency of stirrup greatly. In addition, in the process of bending, the upper clamping block 2a and the lower clamping block 3a are tightly clamped on the steel bar, so that the steel bar can be stably bent, the steel bar is prevented from shaking, and the normal bending work is prevented. Specially, in the reinforcing bar in-process of buckling, in order not to hinder the work of buckling of reinforcing bar, in advance, flexible actuating mechanism can drive reinforcing bar shearing mechanism and remove certain distance toward the inside of base 1a to prevent that fixed shear 1b and movable shear 2b from interfering with the reinforcing bar of bending in the middle of.
After the first hook binding section is bent, the bending power mechanism drives the bending head 4a to reset, the upper clamping block 2a and the lower clamping block 3a loosen the steel bars, then the synchronous driving mechanism drives the base 1a to move for a certain distance along the direction opposite to the conveying direction of the steel bars, the steel bars are continuously conveyed forwards in the process, then the clamping driving mechanism drives the upper clamping block 2a and the lower clamping block 3a to clamp the steel bars, the distance from the clamping point on the steel bars to the first hook binding section is the length of the first side of the rectangular stirrup, and specifically, the distance of the reverse movement of the base 1a and the distance of the forward movement of the steel bars are the length of one side of the rectangular stirrup as the base 1a moves reversely relative to the steel bars; after the upper clamping block 2a and the lower clamping block 3a are clamped on the steel bar, the synchronous driving mechanism drives the base 1a to move along the conveying direction of the steel bar at equal speed, so that the steel bar clamping mechanism and the bending driving mechanism can move synchronously with the steel bar, and therefore the steel bar clamping mechanism and the bending driving mechanism can keep relatively static.
Similarly, in the process of synchronously moving along the conveying direction of the steel bars, the bending power mechanism drives the bending head 4a to rotate towards the direction close to the steel bars, so that the bending head 4a presses on the steel bars, the steel bars bend around the bending turns towards the supporting part 5a, the bending angle is equal to 90 degrees, and a first section of bending edge is formed; then, the bending head 4a is reset, and the upper clamping block 2a and the lower clamping block 3a loosen the steel bars; then, the synchronous driving mechanism drives the base 1a to move for a certain distance along the direction opposite to the conveying direction of the steel bars again, after the upper clamping block 2a and the lower clamping block 3a are clamped on the steel bars, the bending driving mechanism and the steel bars move synchronously under the driving of the synchronous driving mechanism, and a second section of bent edge is formed under the driving of the bending power mechanism; and then finishing the processing of the third section of bending edge and the fourth section of bending edge according to the bending principle of the first section of bending edge and the second section of bending edge.
Particularly, as a second hook binding section for binding with the main reinforcement needs to be generated, the bending angle of the fourth bending edge is larger than 90 degrees, so that a second hook is generated, then the shearing mechanism shears the reinforcement at the tail end of the second hook, so that a second hook binding section in the rectangular stirrup is formed, the length of the second hook binding section is equal to that of the first hook binding section, and the bending work of one stirrup is completed. Wherein, the process that the reinforcing bar shearing mechanism was cut at the terminal end of the second crotch of reinforcing bar is: when the reinforcing steel bars are conveyed forwards, firstly, the telescopic driving mechanism drives the reinforcing steel bar shearing mechanism to extend out of the base 1a and approach the reinforcing steel bars until the reinforcing steel bars are positioned between the fixed shears 1b and the movable shears 2b, then the shearing driving mechanism drives the movable shears 2b to move towards the direction of the fixed shears 1b, so that the movable shears 2b extrude the reinforcing steel bars onto the fixed shears 1b, and then the reinforcing steel bars are sheared; in the process, the reinforcing steel bar shearing mechanism is arranged on the base 1a, under the driving of the synchronous driving mechanism, the synchronous movement of the reinforcing steel bars is carried out while the shearing work is carried out, and the production efficiency of the stirrups is improved.
The present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are included in the scope of the present invention.
Claims (10)
1. A full-automatic stirrup bending device comprises a steel bar conveying mechanism, a steel bar bending mechanism and a steel bar shearing mechanism; it is characterized in that the preparation method is characterized in that,
the steel bar bending mechanism comprises a base, a steel bar clamping mechanism and a bending driving mechanism which are arranged on the base, and a synchronous driving mechanism for driving the base to reciprocate along the conveying direction of the steel bars; the steel bar clamping mechanism comprises an upper clamping block, a lower clamping block and a clamping driving mechanism for driving the upper clamping block and the lower clamping block to clamp or loosen the steel bar, wherein the upper clamping block and the lower clamping block are arranged vertically and symmetrically; the bending driving mechanism comprises a bending head and a bending power mechanism for driving the bending head to rotate;
the tail ends of the upper clamping block and the lower clamping block are semicircular bending and turning supporting parts along the conveying direction of the steel bars, and the bending heads are arranged on the outer sides of the bending and turning supporting parts; when the reinforcing steel bar bending mechanism bends the reinforcing steel bar, the base moves forwards at a constant speed along the conveying direction of the reinforcing steel bar under the driving of the synchronous driving mechanism;
the steel bar shearing mechanism is arranged on the base, is positioned between the steel bar conveying mechanism and the bending driving mechanism, and comprises a fixed shear, a movable shear and a shearing driving mechanism for driving the movable shear to be close to the fixed shear to do shearing action, wherein the movable shear is positioned above the fixed shear; and a telescopic driving mechanism for driving the steel bar shearing mechanism to move telescopically is further arranged in the base.
2. The full-automatic stirrup bending device according to claim 1, wherein the bending power mechanism comprises a rotating ring, a bending power motor and a bending power assembly, the bending power motor is used for driving the rotating ring to rotate, and the bending head is fixedly arranged on the rotating ring and extends outwards; one end of the rotating ring provided with the bending head extends out of the base, and the other end of the rotating ring is embedded in the base;
the bending power assembly comprises a driving gear and a driven gear, the driving gear is fixed on an output shaft of the bending power motor, and the driven gear is fixedly connected with one end, embedded in the base, of the rotating ring.
3. The full-automatic stirrup bending device according to claim 2, wherein a mounting disc is arranged in the inner ring of the rotating ring, the mounting disc is positioned in one end of the rotating ring extending out of the base, and a sliding groove for sliding up and down is formed in the mounting disc;
the upper clamping block and the lower clamping block respectively comprise a clamping part, a sliding part and a stress part which are sequentially connected, and the sliding part is positioned between the clamping part and the stress part; the sliding part is arranged in a sliding groove of the mounting plate.
4. The full-automatic stirrup bending device according to claim 3, wherein the clamping driving mechanism comprises a clamping power mechanism and a loosening power mechanism, the clamping power mechanism comprises an upper clamping spring and a lower clamping spring, the upper end of the upper clamping spring abuts against the inner annular wall of one end of the rotating ring embedded in the base, and the lower end of the upper clamping spring abuts against the spring force bearing surface of the force bearing part of the upper clamping block; the lower end of the lower clamping spring abuts against the inner ring wall of one end, embedded in the base, of the rotating ring, and the upper end of the lower clamping spring abuts against the spring stress surface of the stress part of the lower clamping block.
5. The full-automatic stirrup bending device according to claim 4, wherein the loosening power mechanism comprises a push-away piece and a push-away power piece, and an inclined push-away force-bearing surface is arranged on one side of the upper clamping block, which is opposite to the force-bearing part of the lower clamping block; the upper end and the lower end of the push-away piece are also provided with inclined push-away surfaces matched with the push-away force-bearing surfaces, and the inclination of the push-away surfaces is the same as that of the push-away force-bearing surfaces.
6. The fully automatic stirrup bending device according to claim 5, wherein the push-away power member is a loosening power motor fixedly arranged in the base, an output shaft of the loosening power motor is provided with an eccentric wheel, and a rim of the eccentric wheel abuts against one end of the push-away member away from the upper clamping block and the lower clamping block.
7. The full-automatic stirrup bending device according to claim 1, wherein the synchronous driving mechanism comprises a synchronous driving motor and a synchronous driving assembly, the synchronous driving assembly comprises a lead screw and a lead screw nut, one end of the lead screw is fixedly connected to the output end of the synchronous driving motor, and the other end of the lead screw penetrates through the lead screw nut; the feed screw nut is fixedly arranged at the lower end of the base; two groups of linear sliding structures are arranged below the base and comprise a sliding block arranged at the lower end of the base and a guide rail arranged on the bottom plate and matched with the sliding block, and the sliding block is positioned on two sides of the screw rod nut.
8. The full-automatic stirrup bending device according to claim 1, wherein the two ends of the fixed shears and the movable shears are respectively a shearing part and a driving part for shearing reinforcing steel bars, and the middle parts of the fixed shears and the movable shears are hinged with each other;
the shearing driving mechanism comprises a hydraulic driving cylinder, a telescopic rod of the hydraulic driving cylinder is hinged to a driving part of the movable shear, and a cylinder body of the hydraulic driving cylinder is hinged to a driving part of the fixed shear.
9. The full-automatic stirrup bending device according to claim 1, wherein the telescopic driving mechanism comprises a telescopic driving motor and a telescopic driving assembly, the telescopic driving assembly comprises a driving wheel fixed on an output shaft of the telescopic driving motor and a rack engaged with the driving wheel, the rack extends along a direction perpendicular to the conveying direction of the reinforcing steel bars, is fixed at one end of the fixed shears and faces downwards; the lower side of the fixed shears is provided with two sliding rails, the upper ends of the two sliding rails are matched in a sliding groove of the lower end face of the fixed shears, and the lower ends of the two sliding rails are fixed on the base.
10. The fully automatic stirrup-bending device according to claim 9, wherein the ends of the cut portions of the fixed shears are provided with inclined escape guide surfaces.
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| CN109848326B (en) * | 2018-12-11 | 2020-06-26 | 黑龙江省龙建路桥第二工程有限公司 | Steel bar processing device for road construction |
| CN109513780A (en) * | 2018-12-19 | 2019-03-26 | 浙江金瑞五金索具有限公司 | Semi-automatic bending machine |
| CN112371798B (en) * | 2020-10-26 | 2022-09-06 | 湖南翰坤实业有限公司 | Enclose shelves bending device for plate washer |
| CN114433747A (en) * | 2022-02-10 | 2022-05-06 | 南通市宇翔特种钢丝钢绳有限公司 | Steel wire rope bending equipment |
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