A new type of vertical wire rod steel bar pay-off device with a built-in pre-straightening function

Abstract

This application relates to the technical field of steel bar wire pay - out devices, and particularly to a new type of vertical coiled steel bar wire pay - out device with a self - pre - straightening function, which includes a counterweight base, a docking rod, a positioning disc, a bracket, a support frame, a positioning and centering mechanism, and a pre - straightening mechanism. A docking rod is arranged at the center of the counterweight base. The docking rod is coaxially and rotatably connected to a positioning disc and a bracket, and the bracket is located above the positioning disc. A support frame is clamped on the positioning disc. The positioning and centering mechanism is arranged on one side of the counterweight base, and the pre - straightening mechanism is arranged on one side of the positioning and centering mechanism. The coiled steel bar is supported by the support frame, and at the same time, the steel bar is supported by the bracket. Through the rotatable connection structure between the positioning disc and the counterweight base, the coiled steel bar can rotate on the support frame during wire pay - out, facilitating the wire pay - out operation. By setting the positioning and centering mechanism, the steel bar can be fixed on one side of the pre - straightening mechanism and accurately docked with the pre - straightening mechanism.

Description

Technical Field

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

[0002] Coil steel bars are a type of steel bar material widely used in the field of engineering construction. Coil bars are round steel bars with a relatively small diameter, and their commercial form is supplied in coils. Commonly seen on construction sites are those with diameters of 6, 8, 10, and 12 millimeters, mostly made of low - carbon steel. They are generally not used as the main bars in reinforced concrete structures, but are mostly used for making steel bar sleeves. Small - diameter ones are used for "brick reinforcement" in brick - concrete structures. During production, for convenient storage and transportation, they are arranged in a disc shape.

[0003] Currently, in order to facilitate the use of coil steel bars, after transporting the coil steel bars to the construction site, they need to be straightened before use. Conventional coil wire pay - out mostly uses simple devices or the method of spreading them out on the spot.

[0004] In the related art, the methods of straightening or spreading out on the spot through simple devices have problems such as high safety risks, poor construction image, and low efficiency. In addition, before straightening through a simple device, it is also necessary to manually pull out one end of the steel bar and accurately dock it with the device, which is relatively cumbersome and time - consuming. Moreover, currently, most of the simple adjustment devices only have the function of straightening the steel bar. In some scenarios, it is also necessary to bend the steel bar 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 type of vertical coil steel bar wire pay - out device with a built - in pre - straightening function to solve this problem. Summary of the Invention

[0005] In order to solve the problem that the current coil steel bar wire pay - out device requires manual positioning of the steel bar before use to accurately dock the steel bar with the wire pay - out device, which is cumbersome and time - consuming, and at the same time, the current wire pay - out device only has the straightening function and cannot bend the steel bar to a certain extent according to actual use requirements, the present application provides a new type of vertical coil steel bar wire pay - out device with a built - in pre - straightening function.

[0006] The new type of vertical coil steel bar wire pay - out device with a built - in pre - straightening function provided by the present application adopts the following technical solutions:

[0007] A new type of vertical coil steel bar wire pay - out device with a built - in pre - straightening function, comprising:

[0008] A counterweight base, at the center of which a docking rod is provided. The docking rod is coaxially rotatably connected to a positioning disc and a bracket, and the bracket is located above the positioning disc. A support frame is clamped on the positioning disc;

[0009] The positioning and centering mechanism is used to position and center the coiled steel bars, and the positioning and centering mechanism is arranged on one side of the counterweight base. 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 at the top of the first supporting plate. The linkage ring is rotatably connected to the port of the limiting cylinder;

[0010] The pre-straightening mechanism is used to pre-straighten the coiled steel bars. The pre-straightening mechanism is arranged on one side of the positioning and centering mechanism. The pre-straightening mechanism includes a second supporting seat, a second supporting plate, a pulling roller, a sliding groove, a sliding block and a straightening roller. The second supporting seat is fixed on the side of the first supporting seat away from the counterweight base. The second supporting plate is vertically fixed on the second supporting seat. The pulling roller is rotatably connected to one side of the second supporting plate. The sliding groove is arranged through the second supporting plate. The sliding block is slidably clamped in the sliding groove. The straightening roller is rotatably connected to one side of the sliding block close to the pulling roller.

[0011] By adopting the above technical solution, the coiled steel bars are supported by the support frame, and at the same time, the steel bars are supported by the bracket, and through the rotatable connection structure of the positioning disc and the counterweight base, the coiled steel bars can rotate on the support frame during wire laying, which is convenient for wire laying operations;

[0012] By setting the positioning and centering mechanism, the steel bars can be fixed on one side of the pre-straightening mechanism, and the steel bars can be accurately docked with the pre-straightening mechanism, avoiding the need for manual docking of the steel bars with the pre-straightening mechanism. The operation is simple and time-saving and labor-saving. At the same time, through the linkage of the various structures in the positioning and centering mechanism, the positioning and centering mechanism can limit the coiled steel bars with different diameters, improving the scope of application;

[0013] By setting the pre-straightening mechanism, the coiled steel bars can be quickly straightened. At the same time, through the angle-adjustable connection structure in the pre-straightening mechanism, the steel bars can not only be straightened, but also be bent to a certain extent according to the actual construction requirements, effectively improving the work efficiency.

[0014] Optionally, the positioning and centering mechanism further 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. The other end of the limiting rod is rotatably connected to the second connecting block.

[0015] By adopting the above technical solution, through the arrangement of the centering rod and the limiting rod, when the linkage ring rotates, the centering rod and the limiting rod can synchronously move and stretch to a certain extent, so that the wire rod steel bars with different diameters can be limited and centered.

[0016] Optionally, the positioning and centering mechanism further includes an adjusting rod and a cylinder. There are two linkage rings, which 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.

[0017] By adopting the above technical solution, through the telescopic movement of the telescopic part of the cylinder, the linkage ring is driven to rotate quickly through the adjusting rod.

[0018] Optionally, a screw hole is provided at the center of the top of the second support plate, and the screw hole communicates with the sliding groove. A lead screw is in threaded fit in the screw hole of the second support plate, and one end of the lead screw is rotatably connected to the slider.

[0019] By adopting the above technical solution, the rotation of the lead screw drives the slider to slide in the sliding groove, adjusting the distance between the straightening roller and the pulling roller. Thus, the steel bar pay-off device can bend the wire rod steel bar to a certain extent according to the actual construction requirements, effectively improving the work efficiency.

[0020] Optionally, the pre-straightening mechanism further includes a transmission rod, a driving gear and a driven gear. The transmission rod is rotatably connected to the second supporting seat. The driving gear is coaxially fixed at one end of the transmission rod. The driven gear is coaxially fixed on one side of the pulling roller, and the driven gear meshes with the driving gear.

[0021] By adopting the above technical solution, the driving gear drives the driven gear to mesh and move, thereby driving the pulling roller to rotate, and the rotation of the pulling roller drives the steel bar to move.

[0022] Optionally, the pre-straightening mechanism further includes a servo motor, a driven pulley and a belt. The servo motor is fixed on the second supporting seat. There are two driven pulleys. One of the driven pulleys is coaxially fixed on the output shaft of the servo motor, and the other driven pulley is coaxially fixed at the end of the transmission rod far from the driving gear. The belt is arranged between two adjacent driven pulleys.

[0023] By adopting the above technical solution, the belt enables the transmission rod to be synchronously linked with the output shaft of the servo motor.

[0024] Optionally, the inner wall of the belt is provided with a notch, and the side wall of the driven pulley is provided with a convex block, and the convex block of the driven pulley cooperates with the notch of the belt.

[0025] By adopting the above technical solution, the belt is limited by the notch to prevent the belt from sliding between the passive disk.

[0026] Optionally, positioning holes are provided on the positioning disk, the bottom end of the support frame is detachably inserted into the positioning holes of the positioning disk, and the top end of the support frame is of a conical structure.

[0027] By adopting the above technical solution, the top end of the support frame with a conical structure facilitates the butt joint between the steel bar and the support frame.

[0028] Optionally, a number of cross bars are fixed between adjacent two linkage rings.

[0029] By adopting the above technical solution, the adjacent two linkage rings can be synchronously linked by the cross bars.

[0030] Optionally, there are two sets of the overall structure composed of the driven gear and the pulling roller, and the two driven gears are symmetrically engaged on both sides of the linkage gear, and the straightening roller is located between adjacent two pulling rollers.

[0031] By adopting the above technical solution, the linkage gear can synchronously drive the two driven gears to engage and link through the arrangement of the two driven gears, thereby driving the two pulling rollers to rotate synchronously.

[0032] In summary, the present application includes at least one of the following beneficial technical effects:

[0033] The support frame is used to support the coiled steel bar, and at the same time, the steel bar is supported by the bracket, and through the rotatable connection structure between the positioning disk and the counterweight base, the coiled steel bar can rotate on the support frame during wire release, facilitating the wire release operation; by setting the positioning and centering mechanism, the steel bar can be fixed on one side of the pre-straightening mechanism, and the steel bar can be accurately butted with the pre-straightening mechanism, avoiding the need for manual butt joint of the steel bar and the pre-straightening mechanism, which is simple and time-saving at the same time. At the same time, through the linkage of the structures in the positioning and centering mechanism, the positioning and centering mechanism can limit coiled steel bars with different diameters, improving the scope of application; by setting the pre-straightening mechanism, the coiled steel bar can be quickly straightened, and at the same time, 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 the actual construction requirements, effectively improving the work efficiency. Description of the Drawings

[0034] Figure 1 It is an external structural schematic diagram of a new type of vertical coiled steel bar wire release device with a pre-straightening function in this embodiment.

[0035] Figure 2 It is a schematic diagram of the separation structure of the support frame in this embodiment.

[0036] Figure 3 It is a schematic diagram of the positioning and centering mechanism and the pre-straightening mechanism in this embodiment.

[0037] Figure 4 It is a schematic diagram of the overall structure of the positioning and centering mechanism in this embodiment.

[0038] Figure 5 It is a schematic diagram of a partial structure of the pre-straightening mechanism in this embodiment.

[0039] Figure 6 It is a schematic diagram of the belt and its connection structure in this embodiment.

[0040] Explanation of reference numerals:

[0041] 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 support plate; 63. Limiting cylinder; 64. Linking 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 support plate; 73. Tensioning roller; 74. Chute; 75. Slide block; 76. Straightening roller; 77. Lead screw; 78. Transmission rod; 79. Linking gear; 710. Driven gear; 711. Servo motor; 712. Passive disc; 713. Belt. Detailed implementation manners

[0042] The following further describes the present application in detail Figures 1-6 in conjunction with the attached drawings.

[0043] The embodiment of the present application discloses a new type of vertical wire rod steel bar pay-off device with a pre-straightening function.

[0044] It should be noted that in the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 construed as a limitation of the present invention.

[0045] It should also be noted that in actual construction sites, steel bars usually need to be straightened or bent according to design requirements. The situation at the construction site is very complex. Especially for the treatment of some special nodes, construction adjustments must be made under the condition of meeting the design requirements. In addition to the need for bending of stirrups, there are also bent-up bars used to enhance the force-bearing capacity of beam supports, and bends at the ends of steel bars, such as hooks used to enhance the anchoring effect, which are all steel bars that need to be bent. Therefore, traditional devices with only a single straightening or bending function can no longer meet the current demanding construction conditions, whether from the perspective of economy or efficiency.

[0046] Referring to Figure 1 and Figure 2 , a new type of vertical wire rod steel bar pay-off device with a pre-straightening function, including 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 provided at the center of the counterweight base 1. The docking rod 2 is coaxially and rotatably connected to a positioning disc 3 and a bracket 4, and the bracket 4 is located above the positioning disc 3. A 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 support the wire rod steel bar, and at the same time, the bracket 4 is used to support the steel bar. Through the rotatable connection structure between the positioning disc 3 and the counterweight base 1, the wire rod steel bar can rotate on the support frame 5 during pay-off, facilitating the pay-off operation. 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 accurately dock with the pre-straightening mechanism 7, avoiding the need for manual docking of the steel bar with the pre-straightening mechanism. At the same time, the setting of the pre-straightening mechanism 7 enables the wire rod steel bar to be quickly straightened.

[0047] Referring to 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 support seat 61, a first support 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 accurately dock with the pre-straightening mechanism 7, avoiding the need for manual docking of the steel bar with the pre-straightening mechanism, which is simple to operate and saves time and effort. At the same time, through the linkage of each structure in the positioning and centering mechanism 6, the positioning and centering mechanism 6 can limit wire rod steel bars with different diameters, improving the scope of application.

[0048] 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 at 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, and one end of the limiting rod 68 is slidably butted 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. There are two linkage rings 64, which 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.

[0049] Referring to 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 chute 74, a slider 75, a straightening roller 76 and a lead screw 77. By setting the pre-straightening mechanism 7, the coiled steel bars can be quickly straightened. At the same time, through the angle-adjustable connection structure in the pre-straightening mechanism 7, the steel bars can not only be straightened, but also bent to a certain extent according to the actual construction requirements, effectively improving the work efficiency.

[0050] 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 chute 74 is penetrated through the second supporting plate 72. The slider 75 is slidably clamped in the chute 74. The straightening roller 76 is rotatably connected to the side of the slider 75 close to the pulling roller 73. A screw hole is provided at the center of the top of the second supporting plate 72, and the screw hole communicates with the chute 74, and a lead screw 77 is in threaded fit in the screw hole of the second supporting plate 72. One end of the lead screw 77 is rotatably connected to the slider 75.

[0051] In the embodiment of the present application, the pre-straightening mechanism 7 further includes a transmission rod 78, a linkage gear 79, a driven gear 710, a servo motor 711, a passive disc 712 and a belt 713. The belt 713 enables the transmission rod 78 to be synchronously linked with the output shaft of the servo motor 711 and drive it to rotate. The driven gear 710 is driven to mesh and link through the linkage gear 79, thereby driving the pulling roller 73 to rotate, and driving the steel bars to move through the rotation of the pulling roller 73.

[0052] 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. The driven gear 710 meshes with the linkage gear 79. The servo motor 711 is fixed to the second supporting seat 71. There are two passive disks 712. One of the passive disks 712 is coaxially fixed to the output shaft of the servo motor 711, and the other passive disk 712 is coaxially fixed to the end of the transmission rod 78 away from the linkage gear 79. The belt 713 is arranged between two adjacent passive disks 712.

[0053] Refer to Figure 6 , specifically, in the embodiment of the present application, regarding the belt 713, the inner wall of the belt 713 is provided with notches, and the side wall of the passive disk 712 is provided with protrusions. The protrusions of the passive disk 712 cooperate with the notches of the belt 713. The notches are used to limit the belt 713 to prevent the belt 713 from sliding relative to the passive disk 712.

[0054] In the embodiment of the present application, the positioning disk 3 is provided with positioning holes. The bottom end of the support frame 5 is detachably inserted into the positioning holes of the positioning disk 3, and the top end of the support frame 5 is in a conical structure. The conical top end of the support frame 5 facilitates the butt joint between the steel bar and the support frame 5.

[0055] A number of cross bars are fixed between two adjacent linkage rings 64, and the cross bars enable two adjacent linkage rings 64 to be synchronously linked.

[0056] Specifically, there are two sets of the overall structures composed of the driven gear 710 and the pulling roller 73, and the two driven gears 710 are symmetrically meshed on both sides of the linkage gear 79. The straightening roller 76 is located between two adjacent pulling rollers 73. The two driven gears 710 enable the linkage gear 79 to synchronously drive the two driven gears 710 to mesh and link, and then drive the two pulling rollers 73 to rotate synchronously.

[0057] The implementation principle of the novel vertical bar steel wire pay-off device with a self-pre-straightening function in the embodiment of the present application is as follows: First, place the bar steel on the support frame 5, and support the bar steel through the bracket 4. Then, pull out one end of the bar steel and place it in the limiting cylinder 63. At this time, the air 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 clamp and center the steel bar. Then, pass one end of the steel bar through between the pulling roller 73 and the straightening roller 76. At this time, rotate the lead screw 77 to drive the slider 75 to slide, so that the straightening roller 76 abuts against the steel bar. 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. The linkage gear 79 drives the driven gear 710 to mesh and link. The driven gear 710 drives the pulling roller 73 to rotate and pull the steel bar to move, and at the same time straighten the steel bar.

[0058] Social benefit analysis of this application: A new type of vertical wire rod steel bar pay-off device with a built-in pre-straightening function in this application is the success of the applicant's long-term R & D and improvement, and has been successfully applied to the construction site of Guilin - Gongcheng - Hezhou Highway (Guilin to Zhongshan section). It significantly improves the construction efficiency compared with the conventional method, effectively guarantees the operation safety, reduces the risk of operators continuously exposed to dangerous environments, provides guarantee for the safe and efficient completion of the project construction, and has won great praise from governments at all levels.

[0059] Economic benefit analysis of this application: Only one bid section is analyzed below. The total designed coiled steel bars at the construction site of Guilin - Gongcheng - Hezhou Highway (Guilin to Zhongshan section) are 35,910 tons. Each coil of steel bar weighs about 2.1 tons, and a total of 17,100 coils are needed. The construction is carried out using a new type of vertical wire rod steel bar pay-off device with a built-in pre-straightening function in this application. A total of 565 kg of various steel materials are used. The steel is 5,000 yuan per ton, and the required material cost is 2,825 yuan. The labor cost and equipment cost required for processing this device are 1,500 yuan. The total cost required for a single pay-off device is 4,325 yuan. 4 pay-off devices are processed in the process, and the total required cost is 4,325 * 4 = 17,300 yuan. The efficiency of this device is about 1.5 times higher than the conventional pay-off method, indirectly improving the construction efficiency of the straightening and cutting processes of the wire rod steel bars. Under normal construction conditions, 0.1 man-days of labor can be saved for each coil of steel bar released compared with the conventional method. A total of 17,100 coils of wire rod steel bars are needed in this project, and a total of 1,719 man-days of labor can be saved. The labor cost per man-day of the worker is 280 yuan, and the labor cost can be saved by 1,719 * 280 = 429,700 yuan, and the construction safety risk is greatly reduced. In summary, using this device can save 429,700 - 17,300 = 412,400 yuan within the scope of this bid section, and the economic benefit is very remarkable.

[0060] The above are all the preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A new type of vertical wire rod steel bar unwinder with a built-in pre-straightening function, characterized in that, Comprising: A counterweight base (1), a docking rod (2) is arranged at the center of the counterweight base (1), the docking rod (2) is coaxially rotatably connected with 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 coil bar, and the positioning and centering mechanism (6) is arranged on one side of the counterweight base (1). The positioning and centering mechanism (6) includes a first supporting seat (61), a first supporting plate (62), a limiting cylinder (63) and a linkage ring (64). 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 at the top of the first supporting plate (62), and the linkage ring (64) is rotatably connected to the port of the limiting cylinder (63); A pre-straightening mechanism (7) for pre-straightening the coil bar, the pre-straightening mechanism (7) is arranged on one side of the positioning and centering mechanism (6), and the pre-straightening mechanism (7) includes a second supporting seat (71), a second supporting plate (72), a pulling roller (73), a sliding groove (74), a sliding block (75) and a straightening roller (76). 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 sliding groove (74) is arranged through the second supporting plate (72), the sliding block (75) is slidably clamped in the sliding groove (74), and the straightening roller (76) is rotatably connected to the side of the sliding block (75) close to the pulling roller (73); The positioning and centering mechanism (6) further includes 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); The positioning and centering mechanism (6) further includes an adjusting rod (69) and a cylinder (610). There are two linkage rings (64), which 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); The pre-straightening mechanism (7) further includes 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) meshes with the linkage gear (79). The pre-straightening mechanism (7) further includes a servo motor (711), a passive disk (712) and a belt (713). The servo motor (711) is fixed on the second supporting seat (71). There are two passive disks (712). One of the passive disks (712) is coaxially fixed to the output shaft of the servo motor (711), and the other passive disk (712) is coaxially fixed to the end of the transmission rod (78) far from the linkage gear (79). The belt (713) is arranged between adjacent two passive disks (712).

2. The novel vertical wire rod steel bar pay-off device with a pre-straightening function according to claim 1, characterized in that, A screw hole is provided at the center of the top of the second support plate (72), and the screw hole communicates with the chute (74). A lead screw (77) is in threaded cooperation with the screw hole of the second support plate (72), and one end of the lead screw (77) is rotatably connected to the slider (75).

3. A new type of vertical wire rod and bar pay-off device with a built-in pre-straightening function according to claim 1, characterized in that, The inner wall of the belt (713) is provided with a notch, and 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).

4. A novel vertical wire rod and steel bar pay-off device with a built-in pre-straightening function according to claim 1, characterized in that, The positioning disk (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 disk (3), and the top end of the support frame (5) is of a conical structure.

5. A novel vertical wire rod reeler with a built-in pre-straightening function according to claim 1, characterized in that, A number of cross bars are fixed between adjacent two linkage rings (64).

6. The novel vertical wire rod steel bar unwinder with a pre-straightening function according to claim 1, characterized in that, There are two sets of the overall structure composed of the driven gear (710) and the pulling roller (73), and the two sets of driven gears (710) are symmetrically meshed on both sides of the linkage gear (79). The straightening roller (76) is located between adjacent two pulling rollers (73).

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