Novel vertical wire rod steel bar pay-off device with pre-straightening function

Abstract

The invention relates to the technical field of steel bar pay-off devices, in particular to a novel vertical wire rod steel bar pay-off device with a pre-straightening function, which comprises a counterweight base, a butt joint rod, a positioning disc, a bracket, a support frame, a positioning centering mechanism and a pre-straightening mechanism, the butt joint rod is coaxially and rotationally connected with a positioning disc and a bracket, the bracket is located above the positioning disc, a supporting frame is clamped to the positioning disc, the positioning centering mechanism is arranged on one side of the balance weight base, the pre-straightening mechanism is arranged on one side of the positioning centering mechanism, the supporting frame is used for supporting a wire rod steel bar, meanwhile, the bracket is used for bearing the steel bar, and the pre-straightening mechanism is arranged on the other side of the positioning centering mechanism. The steel wire rod reinforcing steel bar can rotate on the supporting frame during paying-off through a rotatable connecting structure of the positioning disc and the balance weight base, paying-off operation is facilitated, the steel bar can be fixed to one side of the pre-straightening mechanism through the arrangement of the positioning centering mechanism, and the steel bar can be accurately in butt joint with the pre-straightening mechanism.

Description

Technical Field

[0001] The present application relates to the technical field of steel bar pay-off devices, and in particular to a novel vertical wire rod steel bar pay-off device with a pre-straightening function. Background Art

[0002] Wire rod rebar is a kind of steel bar material widely used in the field of engineering construction. Wire rod is round steel with relatively small diameter. The commodity form is supplied in coils. The common ones on construction sites are 6, 8, 10, and 12 mm in diameter. Most of them are low-carbon steel. They are generally not used for the main reinforcement of reinforced concrete structures. They are mostly used to make steel sleeves. There are also small diameter ones used for "brick reinforcement" in brick-concrete structures. During production, they are arranged into discs for easy storage and transportation.

[0003] At present, in order to facilitate the use of wire rod steel bars, after the wire rod steel bars are transported to the construction site, they need to be straightened before use. Conventional wire rod laying mostly uses simple devices or on-site scattering.

[0004] In the related art, the method of straightening or breaking up on the spot by simple devices has the problems of high safety risks, poor construction image and low efficiency. In addition, before straightening by simple devices, one end of the steel bar needs to be pulled out manually and accurately connected with the device. The operation is cumbersome, time-consuming and labor-intensive. At the same time, most of the current simple adjustment devices only have the function of straightening the steel bars. In some scenarios, the steel bars need to be bent to a certain extent to meet the construction conditions. However, the current simple devices obviously do not have these functions. Therefore, there is an urgent need for a new vertical wire rod steel bar releaser with a pre-straightening function to solve this problem. Summary of the invention

[0005] In order to solve the problem that the current wire rod rebar payout needs manual positioning of the rebar before use so that the rebar and the payout can be accurately connected, which is cumbersome, time-consuming and labor-intensive, and at the same time, the current payout only has a straightening function and cannot bend the rebar to a certain degree according to actual usage requirements, the present application provides a new vertical wire rod rebar payout with a pre-straightening function.

[0006] The present application provides a novel vertical wire rod rebar pay-off device with a pre-straightening function, which adopts the following technical solution: A new type of vertical wire rod rebar pay-off device with pre-straightening function, comprising: A counterweight base, wherein a docking rod is arranged at the center of the counterweight base, wherein the docking rod is coaxially rotatably connected with a positioning disc and a bracket, and the bracket is located above the positioning disc, and a support frame is clamped on the positioning disc; A positioning and centering mechanism, which is used to position and center the wire rod steel bar, and the positioning and centering mechanism is arranged on one side of the counterweight base, and the positioning and centering mechanism includes a first supporting seat, a first supporting plate, a limiting cylinder and a linkage ring, the first supporting seat is arranged on one side of the counterweight base, the first supporting plate is vertically fixed on the first supporting seat, the limiting cylinder is fixed on the top of the first supporting plate, and the linkage ring is rotatably connected to the port of the limiting cylinder; A pre-straightening mechanism, which is used for pre-straightening wire rod steel bars, is arranged on one side of the positioning and centering mechanism, and includes a second supporting seat, a second supporting plate, a pulling roller, a slide groove, a slider and a straightening roller. The second supporting seat is fixed to the side of the first supporting seat away from the counterweight base, the second support plate is vertically fixed to the second supporting seat, the pulling roller is rotatably connected to one side of the second support plate, the slide groove is penetrated on the second support plate, the slider is slidably engaged in the slide groove, and the straightening roller is rotatably connected to the slider on the side close to the pulling roller.

[0007] By adopting the above technical solution, the wire rod steel bar is supported by the support frame, and the steel bar is supported by the bracket, and the wire rod steel bar can be rotated on the support frame during wire laying through the rotatable connection structure of the positioning disc and the counterweight base, so as to facilitate the wire laying operation; The positioning and centering mechanism is used to fix the steel bar on one side of the pre-straightening mechanism, and the steel bar can be accurately connected with the pre-straightening mechanism, avoiding the need to manually connect the steel bar pre-straightening mechanism. The operation is simple and time-saving and labor-saving. At the same time, through the linkage of various structures in the positioning and centering mechanism, the positioning and centering mechanism can limit the wire rod steel bars of different diameters, thereby improving the scope of application; The pre-straightening mechanism is used to allow the wire rod to be straightened quickly. At the same time, the angle-adjustable connection structure in the pre-straightening mechanism allows the steel bars to not only be straightened but also bent to a certain degree according to actual construction requirements, thereby effectively improving work efficiency.

[0008] Optionally, the positioning and centering mechanism also includes a first connecting block, a second connecting block, a centering rod and a limiting rod, the first connecting block is rotatably connected to the side wall of the linkage ring, the second connecting block is rotatably connected to the side wall of the limiting cylinder, one end of the centering rod is provided with a cavity, one end of the limiting rod is slidably docked in the cavity of the centering rod, the other end of the centering rod is rotatably connected to the first connecting block, and the other end of the limiting rod is rotatably connected to the second connecting block.

[0009] By adopting the above technical solution and utilizing the setting of the centering rod and the limiting rod, when the linkage ring rotates, the centering rod and the limiting rod can be synchronously linked and extend to a certain extent, thereby allowing wire rods of different diameters to be limited and centered.

[0010] Optionally, the positioning and centering mechanism also includes an adjusting rod and a cylinder, two linkage rings are provided and are symmetrically arranged at both ends of the limiting cylinder, the adjusting rod is fixed between two adjacent linkage rings, the fixed part of the cylinder is rotatably connected to the first supporting seat, and the telescopic part of the cylinder is rotatably connected to the adjusting rod.

[0011] By adopting the above technical solution, the telescopic part of the cylinder is utilized to extend and retract, and then the linkage ring is driven to rotate rapidly through the adjusting rod.

[0012] Optionally, a screw hole is provided at the center of the top of the second support plate, and the screw hole is connected with the slide groove, and a screw rod is threadedly matched in the screw hole of the second support plate, and one end of the screw rod is rotatably connected to the slider.

[0013] By adopting the above technical solution, the rotation of the screw rod is used to drive the slider to slide in the slide groove, and the distance between the straightening roller and the pulling roller is adjusted, so that the steel bar pay-off device can bend the wire rod steel bar to a certain extent according to actual construction requirements, thereby effectively improving work efficiency.

[0014] Optionally, the pre-straightening mechanism also includes a transmission rod, a linkage gear and a driven gear, the transmission rod is rotatably connected to the second supporting seat, the linkage gear is coaxially fixed to one end of the transmission rod, the driven gear is coaxially fixed to one side of the pulling roller, and the driven gear is meshed with the linkage gear.

[0015] By adopting the above technical solution, the linkage gear is used to drive the driven gear to mesh and link, thereby driving the pulling roller to rotate, and the rotation of the pulling roller drives the steel bar to move.

[0016] Optionally, the pre-straightening mechanism also includes a servo motor, a passive disk and a belt, the servo motor is fixed on the second supporting seat, two passive disks are provided, one of the passive disks is coaxially fixed on the output shaft of the servo motor, and the other passive disk is coaxially fixed on the transmission rod at one end away from the linkage gear, and the belt is arranged between two adjacent passive disks.

[0017] By adopting the above technical solution, the transmission rod can be synchronously linked with the output shaft of the servo motor by using a belt.

[0018] Optionally, the inner wall of the belt is provided with a notch, the side wall of the passive disk is provided with a protrusion, and the protrusion of the passive disk cooperates with the notch of the belt.

[0019] By adopting the above technical solution, the belt is limited by the setting of the notch to prevent sliding between the belt and the passive disk.

[0020] Optionally, a positioning hole is provided on the positioning disc, the bottom end of the support frame is detachably inserted into the positioning hole of the positioning disc, and the top end of the support frame is a conical structure.

[0021] By adopting the above technical solution, the top end of the support frame with a conical structure is utilized to facilitate the connection between the steel bars and the support frame.

[0022] Optionally, a plurality of cross bars are fixed between two adjacent linkage rings.

[0023] By adopting the above technical solution, two adjacent linkage rings can be linked synchronously by utilizing the cross bar.

[0024] Optionally, the integral structure composed of the driven gear and the pulling roller is provided in two groups, and the two groups of driven gears are symmetrically meshed on both sides of the linkage gear, and the straightening roller is located between two adjacent pulling rollers.

[0025] By adopting the above technical solution and utilizing the arrangement of two driven gears, the linkage gear can synchronously drive the two driven gears to mesh and link, thereby driving the two pulling rollers to rotate synchronously.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: The wire rod steel bar is supported by a support frame, and the steel bar is supported by a bracket. The rotatable connection structure between the positioning disc and the counterweight base allows the wire rod steel bar to rotate on the support frame when laying out the wire, which is convenient for laying out the wire. The positioning and centering mechanism is used to fix the steel bar on one side of the pre-straightening mechanism, and the steel bar can be accurately docked with the pre-straightening mechanism, avoiding the need to manually dock the steel bar pre-straightening mechanism, which is simple to operate and saves time and effort. At the same time, through the linkage of various structures in the positioning and centering mechanism, the positioning and centering mechanism can limit the wire rod steel bars of different diameters, thereby improving the scope of application. The pre-straightening mechanism is used to make the wire rod steel bar be quickly straightened, and through the angle-adjustable connection structure in the pre-straightening mechanism, the steel bar can not only be straightened, but also be bent to a certain extent according to actual construction needs, thereby effectively improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the external structure of a new vertical wire rod steel bar pay-off device with a pre-straightening function in this embodiment.

[0028] Figure 2Schematic diagram of the support frame separation structure in this embodiment.

[0029] Figure 3 It is a schematic diagram of the structure of the positioning and centering mechanism and the pre-straightening mechanism in this embodiment.

[0030] Figure 4 It is a schematic diagram of the overall structure of the positioning and centering mechanism in this embodiment.

[0031] Figure 5 It is a partial structural schematic diagram of the pre-straightening mechanism in this embodiment.

[0032] Figure 6 Schematic diagram of the belt and its connection structure in this embodiment.

[0033] Description of reference numerals: 1. Counterweight base; 2. Docking rod; 3. Positioning disc; 4. Bracket; 5. Support frame; 6. Positioning and centering mechanism; 61. First supporting seat; 62. First supporting plate; 63. Limiting cylinder; 64. Linkage ring; 65. First connecting block; 66. Second connecting block; 67. Centering rod; 68. Limiting rod; 69. Adjusting rod; 610. Cylinder; 7. Pre-straightening mechanism; 71. Second supporting seat; 72. Second supporting plate; 73. Pulling roller; 74. Slide; 75. Sliding block; 76. Straightening roller; 77. Screw; 78. Transmission rod; 79. Linkage gear; 710. Driven gear; 711. Servo motor; 712. Passive disk; 713. Belt. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-6 This application is described in further detail.

[0035] The embodiment of the present application discloses a novel vertical wire rod steel bar pay-off device with a pre-straightening function.

[0036] It should be noted that, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] It should also be noted that in actual construction sites, steel bars usually need to be straightened or bent according to design requirements. The conditions on the construction site are very complicated, especially for the treatment of some special nodes, which must be adjusted under the condition of meeting the design requirements. In addition to the need to be bent stirrups, there are also bent steel bars used to enhance the stress of beam supports, bent steel bars at the ends of steel bars, hooks to enhance the anchoring effect, etc., all of which are steel bars that need to be bent. Therefore, traditional devices with only a single straightening or bending function are difficult to meet today's harsh construction conditions from an economic or efficiency perspective.

[0038] Reference Figure 1 and Figure 2 A novel vertical wire rod rebar pay-off device with a pre-straightening function includes a counterweight base 1, a docking rod 2, a positioning disc 3, a bracket 4, a support frame 5, a positioning and centering mechanism 6 and a pre-straightening mechanism 7. A docking rod 2 is arranged at the center of the counterweight base 1. The docking rod 2 is coaxially connected with the positioning disc 3 and the bracket 4, and the bracket 4 is located above the positioning disc 3. The support frame 5 is clamped on the positioning disc 3. The positioning and centering mechanism 6 is arranged on one side of the counterweight base 1, and the pre-straightening mechanism 7 is arranged on one side of the positioning and centering mechanism 6. The support frame 5 is used to The wire rod steel bar is supported and supported by the bracket 4 at the same time, and the wire rod steel bar can be rotated on the support frame 5 when laying out the wire through the rotatable connection structure of the positioning disc 3 and the counterweight base 1, which is convenient for the laying out operation, and the setting of the positioning and centering mechanism 6 is used to fix the steel bar on one side of the pre-straightening mechanism 7, and the steel bar can be accurately docked with the pre-straightening mechanism 7, avoiding the need to manually dock the steel bar pre-straightening mechanism, and at the same time, the setting of the pre-straightening mechanism 7 is used to make the wire rod steel bar be quickly straightened.

[0039] Reference Figure 3 and Figure 4 Specifically, in the embodiment of the present application, regarding the positioning and centering mechanism 6, the positioning and centering mechanism 6 includes a first supporting seat 61, a first supporting plate 62, a limiting cylinder 63, a linkage ring 64, a first connecting block 65, a second connecting block 66, a centering rod 67, a limiting rod 68, an adjusting rod 69 and a cylinder 610. The setting of the positioning and centering mechanism 6 enables the steel bar to be fixed on one side of the pre-straightening mechanism 7, and the steel bar can be accurately docked with the pre-straightening mechanism 7, avoiding the need to manually dock the steel bar pre-straightening mechanism, which is simple to operate and saves time and effort. At the same time, through the linkage of the various structures in the positioning and centering mechanism 6, the positioning and centering mechanism 6 can limit the wire rod steel bars of different diameters, thereby improving the scope of application.

[0040] Specifically, the first supporting seat 61 is arranged on one side of the counterweight base 1, the first supporting plate 62 is vertically fixed on the first supporting seat 61, the limiting cylinder 63 is fixed on the top end of the first supporting plate 62, the linkage ring 64 is rotatably connected to the port of the limiting cylinder 63, the first connecting block 65 is rotatably connected to the side wall of the linkage ring 64, the second connecting block 66 is rotatably connected to the side wall of the limiting cylinder 63, one end of the centering rod 67 is provided with a cavity, one end of the limiting rod 68 is slidably docked in the cavity of the centering rod 67, the other end of the centering rod 67 is rotatably connected to the first connecting block 65, the other end of the limiting rod 68 is rotatably connected to the second connecting block 66, two linkage rings 64 are provided, and are symmetrically arranged at both ends of the limiting cylinder 63, the adjusting rod 69 is fixed between two adjacent linkage rings 64, the fixed part of the cylinder 610 is rotatably connected to the first supporting seat 61, and the telescopic part of the cylinder 610 is rotatably connected to the adjusting rod 69.

[0041] Reference Figure 5 Specifically, in the embodiment of the present application, regarding the pre-straightening mechanism 7, the pre-straightening mechanism 7 includes a second supporting seat 71, a second supporting plate 72, a pulling roller 73, a slide groove 74, a slider 75, a straightening roller 76 and a screw rod 77. The setting of the pre-straightening mechanism 7 enables the wire rod steel bar to be quickly straightened. At the same time, through the angle-adjustable connection structure in the pre-straightening mechanism 7, the steel bar can not only be straightened, but also can be bent to a certain extent according to actual construction requirements, thereby effectively improving work efficiency.

[0042] The second supporting seat 71 is fixed on the side of the first supporting seat 61 away from the counterweight base 1, the second supporting plate 72 is vertically fixed on the second supporting seat 71, the pulling roller 73 is rotatably connected to one side of the second supporting plate 72, the slide groove 74 is arranged through the second supporting plate 72, the slider 75 is slidably engaged in the slide groove 74, the straightening roller 76 is rotatably connected to the slider 75 on the side close to the pulling roller 73, a screw hole is arranged at the top center of the second supporting plate 72, and the screw hole is connected with the slide groove 74, and a screw rod 77 is matched with the inner thread of the screw hole of the second supporting plate 72, and one end of the screw rod 77 is rotatably connected to the slider 75.

[0043] In the embodiment of the present application, the pre-straightening mechanism 7 also includes a transmission rod 78, a linkage gear 79, a driven gear 710, a servo motor 711, a passive disk 712 and a belt 713. The belt 713 is used to enable the transmission rod 78 to be synchronously linked with the output shaft of the servo motor 711 and drive the rotation. The linkage gear 79 drives the driven gear 710 to engage and link, thereby driving the pulling roller 73 to rotate, and the rotation of the pulling roller 73 drives the steel bar to move.

[0044] Specifically, the transmission rod 78 is rotatably connected to the second supporting seat 71, the linkage gear 79 is coaxially fixed to one end of the transmission rod 78, the driven gear 710 is coaxially fixed to one side of the pulling roller 73, and the driven gear 710 is meshed with the linkage gear 79, the servo motor 711 is fixed on the second supporting seat 71, and two passive disks 712 are provided, one of which is coaxially fixed to the output shaft of the servo motor 711, and the other passive disk 712 is coaxially fixed to one end of the transmission rod 78 away from the linkage gear 79, and the belt 713 is provided between two adjacent passive disks 712.

[0045] Reference Figure 6 Specifically, in the embodiment of the present application, regarding the belt 713, a notch is provided on the inner wall of the belt 713, a protrusion is provided on the side wall of the passive disk 712, and the protrusion of the passive disk 712 cooperates with the notch of the belt 713, and the belt 713 is limited by the setting of the notch to prevent sliding between the belt 713 and the passive disk 712.

[0046] In the embodiment of the present application, a positioning hole is provided on the positioning disc 3, the bottom end of the support frame 5 is detachably inserted into the positioning hole of the positioning disc 3, and the top end of the support frame 5 is a conical structure. The top end of the support frame 5 with a conical structure facilitates the docking of the steel bar and the support frame 5.

[0047] A plurality of cross bars are fixed between two adjacent linkage rings 64 , and the cross bars are used to enable the two adjacent linkage rings 64 to be synchronously linked.

[0048] Specifically, the overall structure composed of the driven gear 710 and the pulling roller 73 is provided with two groups, and the two groups of driven gears 710 are symmetrically meshed on both sides of the linkage gear 79, and the straightening roller 76 is located between two adjacent pulling rollers 73. The setting of the two driven gears 710 enables the linkage gear 79 to synchronously drive the two driven gears 710 to mesh and link, thereby driving the two pulling rollers 73 to rotate synchronously.

[0049] The implementation principle of a new vertical wire rod steel bar releaser with a pre-straightening function in the embodiment of the present application is as follows: first, the wire rod steel bar is placed on the support frame 5, and the wire rod steel bar is supported by the bracket 4, and then one end of the wire rod steel bar is pulled out and placed in the limiting cylinder 63. At this time, the cylinder 610 drives the linkage ring 64 to rotate through the adjusting rod 69. At this time, the centering rod 67 and the limiting rod 68 are synchronously linked, and the steel bar is clamped and centered. Then, one end of the steel bar is passed through the pulling roller 73 and the straightening roller 76. At this time, the rotating screw 77 drives the slider 75 to slide, so that the straightening roller 76 abuts against the steel bar, and then the servo motor 711 drives the transmission rod 78 to rotate through the belt 713. At this time, the linkage gear 79 is synchronously linked, and the linkage gear 79 drives the driven gear 710 to engage and link. The driven gear 710 drives the pulling roller 73 to rotate and pulls the steel bar to move, and the steel bar can be straightened at the same time.

[0050] Social benefit analysis of this application: This application discloses a new type of vertical wire rod rebar payout with pre-straightening function, which is the result of long-term research and development and improvement by the applicant of this application. It has been successfully applied to the construction site of Guilin-Gongcheng-Hezhou Highway (Guilin to Zhongshan Section). Compared with conventional methods, it has significantly improved the construction efficiency, effectively guaranteed the safety of operations, reduced the risk of workers being continuously exposed to dangerous environments, and provided a guarantee for the safe and efficient completion of the project. It has been highly praised by governments at all levels.

[0051] Economic benefit analysis of this application: The following is only analyzed based on one bidding section. The construction site of Guilin-Gongcheng-Hezhou Highway (Guilin to Zhongshan Section) is designed to have a total of 35,910 tons of round steel bars, each weighing about 2.1 tons, and a total of 17,100 bars are required. A new vertical wire rod steel bar payout with a pre-straightening function is used for construction. A total of 565 kilograms of various types of steel are used, with a steel price of 5,000 yuan / ton, and the required material cost is 2,825 yuan. The labor and equipment costs required to process the equipment are 1,500 yuan, and the total cost of a single payout is 4,325 yuan. There are 4 payouts in the process, and the total cost is 4,325*4=17,300 yuan. Compared with the conventional laying-out method, the device is about 1.5 times more efficient, indirectly improving the construction efficiency of the straightening and cutting process of the wire rod steel bar. Under normal construction conditions, each coil of steel bar can save 0.1 man-days of labor compared with the conventional method. This project requires a total of 17,100 coils of steel bars, which can save a total of 1,719 man-days of labor. The worker is paid 280 yuan per man-day, which can save 1,719*280=429,700 yuan in labor costs, and the construction safety risk is greatly reduced. In summary, the use of this device can save 429,700-17,300 yuan=412,400 yuan in costs within the scope of this bidding section, and the economic benefits are very considerable.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A new type of vertical wire rod rebar pay-off device with pre-straightening function, characterized in that: include: A counterweight base (1), wherein a docking rod (2) is arranged at the center of the counterweight base (1), the docking rod (2) is coaxially rotatably connected to a positioning disc (3) and a bracket (4), and the bracket (4) is located above the positioning disc (3), and a support frame (5) is clamped on the positioning disc (3); A positioning and centering mechanism (6) for positioning and centering the wire rod reinforcement, and the positioning and centering mechanism (6) is arranged on one side of the counterweight base (1), and comprises a first supporting seat (61), a first supporting plate (62), a limiting cylinder (63) and a linkage ring (64), wherein the first supporting seat (61) is arranged on one side of the counterweight base (1), the first supporting plate (62) is vertically fixed on the first supporting seat (61), the limiting cylinder (63) is fixed on the top end of the first supporting plate (62), and the linkage ring (64) is rotatably connected to the end of the limiting cylinder (63); A pre-straightening mechanism (7) for pre-straightening a wire rod steel bar, the pre-straightening mechanism (7) being arranged on one side of the positioning and centering mechanism (6), and comprising a second supporting seat (71), a second supporting plate (72), a pulling roller (73), a sliding groove (74), a slider (75) and a straightening roller (76), the second supporting seat (71) being fixed on a side of the first supporting seat (61) away from the counterweight base (1), the second supporting plate (72) being vertically fixed on the second supporting seat (71), the pulling roller (73) being rotatably connected to one side of the second supporting plate (72), the sliding groove (74) being arranged through the second supporting plate (72), the slider (75) being slidably engaged in the sliding groove (74), and the straightening roller (76) being rotatably connected to a side of the slider (75) close to the pulling roller (73).

2. According to claim 1, a novel vertical wire rod rebar pay-off device with a pre-straightening function is characterized in that: The positioning and centering mechanism (6) further comprises a first connecting block (65), a second connecting block (66), a centering rod (67) and a limiting rod (68); the first connecting block (65) is rotatably connected to the side wall of the linkage ring (64); the second connecting block (66) is rotatably connected to the side wall of the limiting cylinder (63); one end of the centering rod (67) is provided with a cavity; one end of the limiting rod (68) is slidably docked in the cavity of the centering rod (67); the other end of the centering rod (67) is rotatably connected to the first connecting block (65); and the other end of the limiting rod (68) is rotatably connected to the second connecting block (66).

3. The novel vertical wire rod rebar pay-off device with pre-straightening function according to claim 2 is characterized in that: The positioning and centering mechanism (6) further comprises an adjusting rod (69) and a cylinder (610); two linkage rings (64) are provided and are symmetrically arranged at both ends of the limiting cylinder (63); the adjusting rod (69) is fixed between two adjacent linkage rings (64); the fixed portion of the cylinder (610) is rotatably connected to the first supporting seat (61); and the telescopic portion of the cylinder (610) is rotatably connected to the adjusting rod (69).

4. The novel vertical wire rod rebar pay-off device with pre-straightening function according to claim 1 is characterized in that: A screw hole is provided at the center of the top of the second support plate (72), and the screw hole is connected to the slide groove (74). A screw rod (77) is threadedly engaged with the inner thread of the screw hole of the second support plate (72), and one end of the screw rod (77) is rotatably connected to the slider (75).

5. The novel vertical wire rod rebar pay-off device with pre-straightening function according to claim 1 is characterized in that: The pre-straightening mechanism (7) further comprises a transmission rod (78), a linkage gear (79) and a driven gear (710); the transmission rod (78) is rotatably connected to the second supporting seat (71); the linkage gear (79) is coaxially fixed to one end of the transmission rod (78); the driven gear (710) is coaxially fixed to one side of the pulling roller (73); and the driven gear (710) is meshed with the linkage gear (79).

6. The novel vertical wire rod rebar pay-off device with pre-straightening function according to claim 5 is characterized in that: The pre-straightening mechanism (7) further comprises a servo motor (711), a passive disk (712) and a belt (713); the servo motor (711) is fixed on the second supporting seat (71); two passive disks (712) are provided, one of the passive disks (712) is coaxially fixed on the output shaft of the servo motor (711); the other passive disk (712) is coaxially fixed on the transmission rod (78) at one end away from the linkage gear (79); and the belt (713) is provided between two adjacent passive disks (712).

7. The novel vertical wire rod rebar pay-off device with pre-straightening function according to claim 6 is characterized in that: The inner wall of the belt (713) is provided with a notch, the side wall of the passive disk (712) is provided with a protrusion, and the protrusion of the passive disk (712) cooperates with the notch of the belt (713).

8. The novel vertical wire rod rebar pay-off device with pre-straightening function according to claim 1 is characterized in that: The positioning disc (3) is provided with a positioning hole, the bottom end of the support frame (5) is detachably inserted into the positioning hole of the positioning disc (3), and the top end of the support frame (5) is in a conical structure.

9. The novel vertical wire rod rebar pay-off device with pre-straightening function according to claim 3 is characterized in that: A plurality of cross bars are fixed between two adjacent linkage rings (64).

10. The novel vertical wire rod rebar pay-off device with pre-straightening function according to claim 5, characterized in that: The overall structure composed of the driven gear (710) and the pulling roller (73) is provided in two groups, and the two groups of the driven gear (710) are symmetrically meshed on both sides of the linkage gear (79), and the straightening roller (76) is located between two adjacent pulling rollers (73).

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