CN102989933B - Automatic lifting type rebar feeder and automatic lifting type rebar feeding process in rebar machining assembly line - Google Patents

Abstract

The invention discloses an automatic lifting type rebar feeder and automatic lifting type rebar feeding process in a rebar machining assembly line. The rebar feeder comprises a rack, a material absorbing mechanism, a discharging mechanism, a material guide mechanism and a control device; the material absorbing mechanism, the discharging mechanism, the material guide mechanism and the control device are arranged on the rack; the material absorbing mechanism comprises a material absorbing air cylinder and a magnetic absorbing device; the discharging mechanism comprises a discharging air cylinder and a stainless steel discharging rod; and the material guide mechanism comprises a material guide roller, a material guide roller supporting frame and a material guide air cylinder. The process is carried out by the following steps in sequence: 1) setting an original state; 2) absorbing and lifting a material; 3) discharging and supporting the material; 4) dividing and feeding the material; 5) discharging the material; and 6) drawing a rebar to move. The rebar feeder provided by the invention has the beneficial effects of simple structure, high working efficiency, labor saving, cost reduction and convenience in maintenance. The rebar feeder provided by the invention is hinged on the lateral face of rebar machining equipment, and moves along with the rebar machining equipment, so that a transportation procedure can be eliminated, the space occupied by the former procedure can be saved, and the application range is wider.

Description

Automatic lifting steel bar feeding device and technology in steel bar processing production line

technical field

The invention relates to a steel bar feeding device and a process thereof in a steel bar processing production line, in particular to an automatic lifting steel bar feeding device and a process thereof in a steel bar processing line.

Background technique

In the prior art, the loading in the steel bar processing production line is carried out by manually taking the steel bar to the processing equipment to complete the processing such as shearing and rolling of the steel bar. Next to the conveyor roller. When the steel bar is transported to the designated position of the processing equipment through the conveying roller table, the transport is stopped, and the steel bar is manually placed on the shearing machine and rolling machine to process the steel bar.

The feeding device in the steel bar processing production line of the above prior art has the following defects: manually take the steel bar to the equipment to complete the processing, and the shearing machine feeding process is labor-intensive, labor-intensive and time-consuming, and the product quality and production efficiency are low.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the above-mentioned technologies, and provide an automatic material suction, automatic lifting guide and automatic material distribution mechanism between the steel bar conveying roller table and the steel bar processing equipment to guide the steel bar on the conveying roller table into the processing equipment. Among them, it has the advantages of convenient processing, labor-saving and high-efficiency automatic lifting steel bar feeding device and its technology in the steel bar processing production line.

The technical scheme that solves the above-mentioned technical problem is:

An automatic lifting steel bar feeding device in a steel bar processing production line, the automatic lifting steel bar feeding device is arranged on the upper part of the steel bar stacking device before the steel bar entrance of the steel bar processing equipment, and the steel bar feeding device includes: a frame; Material suction mechanism, discharge mechanism, material guide mechanism and control device on the frame; the material suction mechanism includes: a material suction cylinder, the piston rod of the material suction cylinder is connected to one end of the magnetic suction head, and the other end of the magnetic suction head Facing and able to absorb the steel bars on the stacking device, the cylinder body of the suction cylinder is installed on the frame; the discharge mechanism is located on one side of the suction mechanism, and its structure includes: a discharge cylinder, the discharge cylinder The piston rod is connected to a stainless steel unloading rod; the unloading cylinder drives the unloading rod to move down and its end can remove the steel bar absorbed by the magnetic suction head; the cylinder body of the unloading cylinder is installed on the frame; the guide material The mechanism is located between the material suction mechanism and the steel bar inlet of the steel bar processing equipment, and its structure includes: a guide roller connected to a rotating drive mechanism at one end, a guide roller support frame and a guide cylinder; the outer diameter of the guide roller is provided with a spiral groove; one end of the guide roller support frame is hinged on the piston rod of the material guide cylinder, and the cylinder body of the material guide cylinder and the other end of the guide roller support frame are respectively hinged on the frame; the guide material cylinder drives the guide material The roller support frame makes the guide roller rotate from the inclined position to the horizontal position to support the steel bar unloaded by the unloading mechanism. The steel bar rolls into the steel bar from the end of the guide roller along its axis to its inner root along with the rotating guide roller. The steel bar entrance of the processing equipment; the steel bar entrance of the steel bar processing equipment is located on the side close to the root of the guide roller.

A process according to the automatic lifting of the steel bar feeding device in the steel bar processing production line, the process is carried out in sequence as follows: 1) Initial state: the piston rod of the material guide cylinder retracts, and the material guide roller tilts downward to avoid the The steel bar is lifted upward; the piston rods of the suction cylinder, discharge cylinder, and distribution cylinder are in the retracted state; 2). Suction and lifting: the suction cylinder works, and the magnetic suction head moves downward to absorb the steel bar and lift the magnetic suction head) and the absorbed steel bar; 3). Unloading and supporting: the unloading cylinder works, the unloading rod moves down to push the steel bar, and at the same time the guide cylinder works, the guide roller rotates to a horizontal position to hold up the pushed down Steel bar; 4). Distributing and loading: the distributing cylinder works, and the distributing head is inserted into the middle of the guide roller to support the steel bar; at the same time, the guide roller rotates to move the steel bar inside the distributing head along the axis of the guide roller to the reinforcement processing The steel bar entrance of the equipment; 5). Unloading: the material guide cylinder is reset, the material guide roller is tilted, and the steel bars located outside the material distribution head fall into the steel bar stacking device; the material distribution cylinder retracts and resets to restore the original state; 6). Traction Rebar movement: The hydraulic cylinder drives the first upper traction wheel and the second upper traction wheel to move down and pull the steel bar into the steel bar processing equipment.

The beneficial effects of the present invention are: the present invention overcomes the defects of the prior art, and changes manual feeding into automatic feeding. Labor intensity, cost reduction, convenient maintenance, energy saving and environmental protection, and low failure rate.

The present invention is hingedly arranged on the side of the steel bar processing equipment. The automatic feeding device of the present invention can move with the steel bar processing equipment to the steel bar stacking device with different storage specifications, and the automatic steel bar feeding device can absorb, lift and unload materials. Material, material support, material distribution, loading, and unloading processes, the steel bars are sent to the entrance of the steel bar processing equipment, and then processed, which saves the handling process and transportation tools in the prior art, and eliminates the space and space occupied by the original process. many intermediate links. When the present invention is not needed, the present invention can be removed through the rotating mechanism, so that the steel bar processing equipment can be used in a wider range.

Description of drawings

Fig. 1 is a front view of the present invention;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is a side view of Fig. 1;

Fig. 4 shows a schematic diagram of the working state of the magnetic suction head in Fig. 1 to absorb the steel bar, and the guide roller is inclined downward to avoid the pre-uplifted steel bar;

Figure 5 shows the state diagram of the guide roller moving the steel bars inside the distribution head to the entrance of the steel bar processing equipment;

Fig. 6a is a partially enlarged view of the material guide mechanism in Fig. 1;

Figure 6b is a left side view of 6a;

Fig. 6c is a D-D sectional view among Fig. 6b;

Figure 7a is a partial enlarged view of the distribution head in Figure 3;

Figure 7b is a left side view of Figure 7a.

"Description of Serial Numbers in the Attached Drawings"

3: magnetic suction head; 5: guide sleeve; 9: frame; 9a: crank arm; 12: guide rod; 12a: top plate of guide rod; 13: suction cylinder; 13a: suction piston plate; 15: steel bar; 20 : Material suction mechanism; 21: Material guide roller; 23: Material guide roller support frame; 24: Motor; 25: Pin shaft; 26: Material guide cylinder; 30: Rail; 40: Material guide mechanism; 41; Distribution head; 41a: Two plane intersection lines; 42: Material distribution cylinder; 43: Rotary shaft; 44: Motor fixing frame; 45: Material guide arm; 60: Material distribution mechanism; 61: Rotary cylinder; 70: Connecting rod; 80: Unloading mechanism; 81: unloading cylinder; 81a: unloading piston plate; 82: unloading rod; 82a: unloading head; 83: fastener; 100: rebar feeding device; 200: rebar stacking device; 300 : steel bar processing equipment; 301: first upper traction wheel; 302: second upper traction wheel; 303: hydraulic cylinder; 304: traction wheel fixing frame; 310: steel bar entrance; 400: rotating mechanism; α: "V" type clamp angle; β: tilt angle.

Detailed ways

Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

As shown in the figure, the present invention provides an automatic lifting rebar feeding device in a rebar processing production line. The automatic elevating rebar feeding device 100 is arranged on the upper part of the rebar stacking device 200 before the rebar inlet 310 of the rebar processing equipment 300 . The reinforcing bar feeding device 100 comprises: a frame 9; a material suction mechanism 20, a material discharge mechanism 80, and a material guide mechanism 40 arranged on the frame 9; a control material suction mechanism 20, a material discharge mechanism 80, and a material guide mechanism 40 Action control device.

The material suction mechanism 20 includes: a material suction cylinder 13, the piston rod of the material suction cylinder 13 is connected to one end of the magnetic suction head 3, and the other end of the magnetic suction head 3 faces and can absorb the steel bar 15 on the stacking device 200. The cylinder block of air cylinder 13 is installed on the frame 9.

The discharge mechanism 80 is located on one side of the suction mechanism 20, and its structure includes: a discharge cylinder 81, the piston rod of the discharge cylinder 81 is connected to a stainless steel discharge rod 82; the discharge cylinder 81 drives the discharge rod 82 Moving its end downwards can unload the reinforcing bar 15 that magnetic suction head 3 absorbs; The cylinder block of described discharging cylinder 81 is installed on the frame 9 .

The material guide mechanism 40 is located between the material suction mechanism 20 and the steel bar inlet 310 of the steel bar processing equipment 300, and its structure includes: a material guide roller 21 connected to a rotating drive mechanism at one end, a material guide roller support frame 23 and a material guide cylinder 26; The outer diameter of the guide roller 21 is provided with a spiral groove; one end of the guide roller support frame 23 is hinged on the piston rod of the material guide cylinder 26, and the cylinder body of the material guide cylinder 26 and the guide roller support frame 23 are separately One end is respectively hinged on the frame 9; the guide cylinder 26 drives the guide roller support frame 23 to make the guide roller 21 rotate from an inclined position to a horizontal position to support the steel bar 15 unloaded by the unloading mechanism 80; The rotating guide roller 21 rolls from the end of the guide roller 21 to its inner root along its axis and enters the steel bar inlet 310 of the steel bar processing equipment 300; side.

The structure of the steel bar entrance 310 of the steel bar processing equipment 300 includes: a first upper traction wheel 301; a second upper traction wheel 302; a traction wheel fixing frame 304 for fixing the first upper traction wheel 301 and the second upper traction wheel 302; The traction wheel fixing frame 304 is connected to the piston rod of the hydraulic cylinder 303, and the cylinder body of the hydraulic cylinder 303 is installed on the steel bar processing equipment 300.

More specifically, as shown in Figure 2, when the steel bar 15 is driven by the rotating guide roller 21 to enter between the first upper traction wheel 301 and the second upper traction wheel 302, the hydraulic cylinder 303 drives the traction wheel fixed frame 304 to Move down and compress the steel bar 15, the driving mechanism (not shown in the figure) drives the first upper traction wheel 301 and the second upper traction wheel 302 to rotate, and the traction steel bar 15 enters the steel bar processing equipment 300 to implement the processing of the steel bar 15.

More specifically, as shown in Fig. 6a to Fig. 6c, the material guide roller support frame 23 in the material guide mechanism 40 is a plate, and the upper part of the material guide roller support frame 23 protrudes and is provided with a rotating shaft 43, and the rotating shaft 43 Hinged in the hole of frame 9; the bottom of guide roller support frame 23 protrudes and is provided with guide crank 45, and this guide crank 45 is hinged on the piston rod of guide cylinder 26 by pin 25; Roller support frame 23 supports the root of material guide roller 21 by bearing hinged support, and the shaft of material guide roller 21 root is connected rotary drive mechanism, and described rotary drive mechanism is motor 24, and motor 24 is fixed on material guide roller support frame by motor holder 44 23 on.

As shown in Figure 2, the present invention also includes a rotating mechanism 400 that drives the steel bar feeding device 100 to rotate. The rotating mechanism 400 is hingedly arranged on the steel bar processing equipment 300, and its structure includes: a rotating cylinder 61, a connecting rod 70; One end of the frame 9 is provided with a crank arm 9a, and the crank arm 9a is hinged on the side of the steel bar processing equipment 300; the frame 9 is hinged on the piston rod of the rotary cylinder 61, and the cylinder body of the rotary cylinder 61 is hinged on One end of the connecting rod 70 , and the other end of the connecting rod 70 is fixed on the side of the steel bar processing equipment 300 .

More specifically, as shown in Figure 2, the bottom of the steel bar processing equipment 300 is provided with casters, and the steel bar processing equipment 300 carries the steel bar feeding device 100 to move on the track 30 parallel to the steel bar stacking device 200, which can be conveniently moved on The invention is implemented at the rebar stacking devices 200 in different areas.

The magnetic suction head 3 is a magnet, and one end of the magnetic suction head 3 is also fixedly connected with a guide rod 12. The guide rod 12 is arranged in parallel with the piston rod of the suction cylinder 13 and is slidably fitted in the guide sleeve 5. The guide sleeve 5 is fixed on the frame 9.

The cylinder body of the discharge cylinder 81 is fixed on the guide rod 12 , and the piston rod of the discharge cylinder 81 is fixed on the discharge rod 82 .

One end of the magnetic suction head 3 is welded on the bottom surface of the material suction piston plate 13a, and the top surface of the material suction piston plate 13a is welded to the bottom of the piston rod of the material suction cylinder 13 and the guide rod 12 at the same time, and the bottom of the discharge rod 82 is slidingly fitted Installed in the through hole of the suction piston plate 13a.

More specifically, as shown in Figures 1 to 3, one end of the magnetic suction head 3 is welded to the bottom surface of the material suction piston plate 13a, and the top surface of the material suction piston plate 13a is welded to the piston rod and guide of the material suction cylinder 13 at the same time. The bottom of the rod 12, the guide rod 12 moves up and down with the piston rod of the suction cylinder 13 in the guide sleeve 5 in the present invention to ensure that the magnetic suction head 3 can stably absorb the lifting steel bar 15 upwards.

The cylinder body of the discharge cylinder 81 is fixed on the guide rod top plate 12a at the top of the guide rod 12; a discharge piston plate 81a is fixed on the piston rod of the discharge cylinder 81, and one end of the discharge piston plate 81a is welded on the discharge rod. On the piston rod of the material cylinder 81, the other end of the discharge piston plate 81a is a split ring sleeved on the discharge rod 82, and the fastener 83 installed on the split ring connects the discharge rod 82 with the discharge piston plate 81a and the discharge rod 81a. The piston rod of material cylinder 81 is fixed as a whole. The discharge cylinder 81 and the discharge rod 82 move synchronously with the piston rod of the guide rod 12 and the material suction cylinder 13 like this, and the discharge cylinder 81 can also independently drive the discharge rod 82 to move and unload the steel bar 15 adsorbed by the magnetic suction head 3 simultaneously.

At the lower end of the discharge rod 82 is a discharge head 82a in the shape of an inverted "door". This structure can contact and remove the steel bar 15 in a large area.

The present invention also includes a material distribution mechanism 60, which is arranged on the upper part near the end of the material guide roller 21, and its structure includes: a material distribution cylinder 42, the piston rod of which is connected to the material distribution cylinder 42 head 41, the cylinder body of the distribution cylinder 42 is installed on the frame 9; the distribution cylinder 42 drives the distribution head 41 to remove the redundant steel bars 15 at the edge of the end on the guide roller 21 and drop them into the steel bar stack device 200.

The distributing head 41 is formed by two planes intersecting to form a "V" cross-section, and the intersection line 41a of the two planes is inclined to the horizontal direction. More specifically, as shown in Fig. 7a and Fig. 7b, the "V"-shaped included angle α of the distributing head 41; the inclination angle β between the intersection line 41a of two planes and the horizontal direction.

The present invention provides a process for automatically lifting the steel bar feeding device in the steel bar processing production line, and the process is carried out as follows in sequence:

1) Initial state: the piston rod of the material guide cylinder 26 is retracted, and the material guide roller 21 is tilted downward to avoid the pre-lifted steel bar 15; the piston rod of the suction cylinder 13, the discharge cylinder 81, and the distribution cylinder 42 is in retraction state;

2). Material suction and material lifting: The material suction cylinder 13 works, the magnetic suction head 3 moves downward to absorb the steel bar 15 and lifts the magnetic suction head 3 and the absorbed steel bar 15;

3). Unloading and supporting: the unloading cylinder 81 works, the unloading rod 82 moves downward to push the steel bar 15, and at the same time the guide cylinder 26 works, and the guide roller 21 rotates to a horizontal position to support the pushed down steel bar 15;

4). Distributing and loading: the distributing cylinder 42 works, the distributing head 41 is inserted into the middle of the guide roller 21 to hold up the steel bar 15; at the same time, the guide roller 21 rotates, and the steel bar 15 inside the distributing head 41 is moved along the guide roller The 21 axis moves to the steel bar inlet 310 of the steel bar processing equipment 300;

5). Unloading: the material guide cylinder 26 is reset, the material guide roller 21 is tilted, and the steel bars 15 located outside the material distribution head 41 fall into the steel bar stacking device 200; the material distribution cylinder 42 retracts and resets to restore the original state;

6). Traction steel bar movement: the hydraulic cylinder 303 in the steel bar processing equipment 300 drives the first upper traction wheel 301 and the second upper traction wheel 302 to move down the traction steel bar 15 into the steel bar processing equipment 300 .

Claims (9)

1. the automatic lifting reinforcing bar feeding device in a reinforcing bar machining production line, described automatic lifting reinforcing bar feeding device (100) is arranged on front reinforcing bar bunching device (200) top of reinforcing bar entrance (310) of reinforcing bar process equipment (300), it is characterized in that, described reinforcing bar feeding device (100) comprising: frame (9); Be arranged on adsorption mechanism (20), shedding mechanism (80), material guide mechanism (40) in frame (9); Control the control device of adsorption mechanism (20), shedding mechanism (80), material guide mechanism (40) action;

Described adsorption mechanism (20) comprising: suction cylinder (13), the piston rod of described suction cylinder (13) connects magnetic tip (3) one end, magnetic tip (3) other end is towards also adsorbing the reinforcing bar (15) on bunching device (200), and the cylinder body of suction cylinder (13) is arranged in frame (9);

Described shedding mechanism (80) is positioned at a side of adsorption mechanism (20), and its structure comprises: discharging cylinder (81), and the piston rod of described discharging cylinder (81) connects stainless discharge arm (82); Discharging cylinder (81) drives discharge arm (82) to move down the reinforcing bar (15) that magnetic tip (3) absorption can be laid down in its end; The cylinder body of described discharging cylinder (81) is arranged in frame (9);

Described material guide mechanism (40) is positioned between adsorption mechanism (20) and the reinforcing bar entrance (310) of reinforcing bar process equipment (300), and its structure comprises: one end connects guide roller (21), guide roller bracing frame (23) and the guide cylinder (26) of rotary drive mechanism; On described guide roller (21) external diameter, be provided with helicla flute; One end of described guide roller bracing frame (23) is hinged on the piston rod of guide cylinder (26), and the cylinder body of guide cylinder (26) and guide roller bracing frame (23) other end are hinged on respectively in frame (9); Described guide cylinder (26) drives guide roller bracing frame (23) to make guide roller (21) rotate to be horizontal level by obliquity and holds the reinforcing bar (15) of being laid down by shedding mechanism (80), and reinforcing bar (15) is along with the guide roller (21) of rotation rolls and enters the reinforcing bar entrance (310) of reinforcing bar process equipment (300) from its guide roller (21) termination along its axis to its inner side root; The reinforcing bar entrance (310) of described reinforcing bar process equipment (300) is positioned at the side that approaches guide roller (21) root.

2. according to the automatic lifting reinforcing bar feeding device in a kind of reinforcing bar machining production line described in claim 1, it is characterized in that, also comprise the rotating mechanism (400) that drives reinforcing bar feeding device (100) rotation, described rotating mechanism (400) is hinged is arranged on reinforcing bar process equipment (300) above, and its structure comprises: rotary cylinder (61), connecting rod (70); In one end of described frame (9), be provided with connecting lever (9a), described connecting lever (9a) is hinged on reinforcing bar process equipment (300) side; On the piston rod of described frame (9) hinging rotary cylinder (61), the cylinder body of described rotary cylinder (61) is hinged on connecting rod (70) one end, and described connecting rod (70) other end is fixed on reinforcing bar process equipment (300) side.

3. according to the automatic lifting reinforcing bar feeding device in a kind of reinforcing bar machining production line described in claim 1, it is characterized in that, described magnetic tip (3) is magnet, on magnetic tip (3) one end, be also fixedly connected with guide post (12), the piston rod parallel interval setting of described guide post (12) and suction cylinder (13) and sliding fitting in fairlead (5), described fairlead (5) is fixed in frame (9).

4. according to the automatic lifting reinforcing bar feeding device in a kind of reinforcing bar machining production line described in claim 3, it is characterized in that, it is upper that the cylinder body of described discharging cylinder (81) is fixed on guide post (12), and the piston rod of discharging cylinder (81) is fixed on discharge arm (82).

5. according to the automatic lifting reinforcing bar feeding device in a kind of reinforcing bar machining production line described in claim 4, it is characterized in that, described magnetic tip (3) one end is welded on the bottom surface of suction piston plate (13a), the end face of suction piston plate (13a) welds the bottom of piston rod and the guide post (12) of suction cylinder (13) simultaneously, and described discharge arm (82) bottom cunning is fitted in the through hole of suction piston plate (13a).

6. according to the automatic lifting reinforcing bar feeding device in a kind of reinforcing bar machining production line described in claim 1, it is characterized in that, also comprise feeding distribution mechanism (60), described feeding distribution mechanism (60) is arranged on and approaches Yi Ce top, guide roller (21) termination, its structure comprises: sub-material cylinder (42), the piston rod of described sub-material cylinder (42) connects sub butt ends (41), and the cylinder body of described sub-material cylinder (42) is arranged in frame (9); Described sub-material cylinder (42) drives sub butt ends (41) that the unnecessary reinforcing bar in edge, termination (15) group being positioned on guide roller (21) is fallen on reinforcing bar bunching device (200).

7. according to the automatic lifting reinforcing bar feeding device in a kind of reinforcing bar machining production line described in claim 6, it is characterized in that, described sub butt ends (41) is to form cross section for " V " type by two Plane intersects, and described two plane intersection lines (41a) tilt with horizontal direction.

8. according to the automatic lifting reinforcing bar feeding device in a kind of reinforcing bar machining production line described in claim 1, it is characterized in that, the structure of the reinforcing bar entrance (310) of described reinforcing bar process equipment (300) comprising: traction wheel on first (301); Traction wheel on second (302); Fix the traction wheel fixed mount (304) of traction wheel (302) on traction wheel on first (301) and second; Described traction wheel fixed mount (304) is connected on the piston rod of hydraulic jack (303), and the cylinder body of hydraulic jack (303) is arranged on reinforcing bar process equipment (300).

9. according to a technique for the automatic lifting reinforcing bar feeding device in reinforcing bar machining production line described in claim 1 to 8, it is characterized in that, described technique is carried out successively as follows:

1) original state: the piston rod retraction of guide cylinder (26), the downward-sloping reinforcing bar of avoiding being moving upward in advance of guide roller (21) (15); The piston rod of suction cylinder (13), discharging cylinder (81), sub-material cylinder (42) is in retracted state;

2). suction, carry material: suction cylinder (13) work, the reinforcing bar (15) that magnetic tip (3) moves down absorption reinforcing bar (15) and promotes magnetic tip (3) and be adsorbed;

3). discharging, retainer: discharging cylinder (81) work, discharge arm (82) moves down and pushes away reinforcing bar (15), guide cylinder (26) work simultaneously, guide roller (21) rotates the reinforcing bar (15) being pushed down for horizontal level picking-up;

4). sub-material, material loading: sub-material cylinder (42) work, sub butt ends (41) inserts guide roller (21) and holds up in the middle of reinforcing bar (15); Guide roller (21) rotates simultaneously, and the reinforcing bar (15) of sub butt ends (41) inner side is moved to the reinforcing bar entrance (310) of reinforcing bar process equipment (300) along guide roller (21) axis;

5). discharging: guide cylinder (26) resets, guide roller (21) tilts, and the reinforcing bar (15) that is positioned at sub butt ends (41) outside is fallen on reinforcing bar bunching device (200); Sub-material cylinder (42) retraction resets and recovers reset condition;

6). traction reinforcing bar moves: by hydraulic jack (303), driven on first on traction wheel (301) and second traction wheel (302) to move down to draw reinforcing bar (15) again to enter in reinforcing bar process equipment (300).