A traction mechanism and steel bar straightening machine

Abstract

The utility model discloses a traction mechanism and a steel bar straightening machine, which relates to the field of construction engineering processing equipment, solves the problem that the arc groove on the traction wheel cannot be aligned with the feed port of the straightening mechanism, and the technical solution is as follows: a traction mechanism, the traction mechanism is used for the steel bar straightening machine, and the steel bar straightening machine includes a workbench; the traction mechanism includes a traction frame, and a traction wheel and a clamping wheel arranged on the traction frame; at least two arc grooves are arranged on the traction wheel and the clamping wheel correspondingly; the clamping wheel is arranged above the traction wheel; the traction wheel is driven to rotate by a driving assembly; it also includes a traction seat, the traction seat includes an upper traction seat and a lower traction seat; the traction frame is arranged on the upper traction seat; the upper traction seat and the lower traction seat are slidably connected; it also includes a fixing component, and the fixing component can prevent the upper traction seat and the lower traction seat from sliding against each other. The purpose of adjusting the position of the traction mechanism to align it with the feed port of the straightening mechanism is achieved.

Description

Technical Field

[0001] The utility model relates to construction engineering processing equipment, more specifically, it relates to a traction mechanism and a steel bar straightening machine. Background Art

[0002] In order to facilitate the transportation of steel bars, the steel bars are generally transported in coils. The steel bars after coiling have a certain curvature, which cannot meet the use of steel bars in engineering. Therefore, before using the steel bars, the steel bars need to be straightened. The steel bar straightening machine is a kind of steel bar processing machinery, which is mainly used to straighten and cut steel bars with a diameter of less than 14 mm. The steel bar straightening machine includes a traction wheel, a straightening mechanism and a cutting mechanism. The traction wheel is used to feed the steel bars into the straightening mechanism, the straightening mechanism is used to straighten the steel bars, and the cutting mechanism is used to cut the steel bars as needed. Generally, traction wheels are set before and after the modulation mechanism. In order to make the straightening machine suitable for steel bars of various diameters, a plurality of arc grooves of different depths are set on the traction wheel of the straightening machine. Different arc grooves are selected according to different steel bars when using. Behind the arc groove is the feed port of the straightening mechanism, and the position of the feed port is relatively fixed. Therefore, there is a certain misalignment between the position of the arc groove and the feed port, which will cause the risk of the steel bar detaching from the traction wheel; resulting in poor feeding or even inability to feed. Utility Model Content

[0003] On the first aspect, the purpose of the utility model is to provide a traction mechanism, which can adjust its position perpendicular to the feeding direction, thereby solving the problem of misalignment between the traction wheel and the feeding port of the straightening mechanism.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions: a traction mechanism, the traction mechanism is used for a steel bar straightening machine, the steel bar straightening machine includes a workbench; the traction mechanism includes a traction frame, and a traction wheel and a clamping wheel arranged on the traction frame; at least two arc grooves are correspondingly arranged on the traction wheel and the clamping wheel; the clamping wheel is arranged above the traction wheel; the traction wheel is driven to rotate by a driving assembly; it also includes a traction seat, the traction seat includes an upper traction seat and a lower traction seat; the traction frame is arranged on the upper traction seat; the upper traction seat and the lower traction seat are slidably connected; it also includes a fixing component, the fixing component can prevent the upper traction seat and the lower traction seat from sliding against each other.

[0005] Through the above scheme, the upper and lower traction seats can slide against each other in the direction perpendicular to the steel bar feeding direction, thereby driving the traction wheel and the clamping wheel on the traction frame to slide forward and backward, and adjusting the positional relationship between the arc groove and the feeding port of the straightening mechanism. When in use, the arc groove to be used can be aligned with the feeding port to reduce the risk of the steel bar falling off the arc groove.

[0006] Furthermore, the lower traction seat is provided with a convex rail, and the upper traction seat is provided with a groove matching the convex rail; the upper traction seat is provided with a penetrating fixing groove; the lower traction seat is provided with a fixing hole, and a thread is provided in the fixing hole; the fixing component includes a first screw; the first screw passes through the fixing groove and is connected with the fixing hole to fix the upper traction seat and the lower traction seat.

[0007] Through the above solution, the cooperation between the convex rail and the groove can reduce the risk of the upper traction seat and the lower traction seat being separated, and can also prevent the upper traction seat and the lower traction seat from moving along the steel bar feeding direction.

[0008] Furthermore, the traction frame includes a first column and a second column arranged opposite to each other, and vertical rails are vertically arranged on the first column and the second column; the traction wheel is arranged on the first slider, and the first slider is provided with a vertical groove matching the vertical rail; the clamping wheel is arranged on the second slider, and the second slider is also provided with a vertical groove matching the vertical rail; and also includes a clamping mechanism, and the second slider maintains a tendency to approach the first slider through the clamping mechanism.

[0009] Through the above scheme, the cooperation between the vertical rail and the vertical groove can facilitate the replacement of the first slider and the second slider; at the same time, the steel bars can be compressed by the clamping mechanism to better realize the steel bar traction function.

[0010] Furthermore, the clamping mechanism includes a crossbeam, a pressure plate, a spring and an adjusting rod; the crossbeam is arranged above the first column and the second column, connecting the first column and the second column; the pressure plate is arranged between the crossbeam and the second slider, and an opening matching the vertical rail is arranged on the pressure plate; the spring is arranged between the second slider and the pressure plate; an adjusting hole with an internal thread is arranged on the crossbeam, and an external thread matching the adjusting hole is arranged on the adjusting rod; the lower end of the adjusting rod abuts against the pressure plate.

[0011] Through the above scheme, the position of the pressure plate is adjusted by the adjusting rod, the deformation degree of the spring is adjusted, and then the force of the pressing wheel to press the steel bar is adjusted, which can better adapt to steel bars of different sizes.

[0012] Furthermore, a rod cap is disposed on the top of the adjusting rod. When rotating the adjusting rod, holding the rod cap can make it more convenient to rotate the adjusting rod.

[0013] Furthermore, the driving assembly includes a driving seat and a first spline shaft; the driving seat is arranged on a workbench; one end of the first spline shaft passes through a first slider and is connected to a traction wheel, and the other end is connected to the driving seat; a rotating wheel is arranged on the driving seat; the rotating wheel is connected to the first spline shaft through a first spline sleeve; the rotating wheel can drive the first spline shaft to rotate.

[0014] With the above solution, when the position of the traction wheel is adjusted by the upper traction seat and the lower traction seat, the rotating wheel can slide axially on the first spline shaft, thereby avoiding the adjustment of the traction wheel and affecting the rotation of the rotating wheel.

[0015] Furthermore, the driving seat includes a first support and a second support; the first support and the second support are provided with axial holes opposite to each other; a third bearing is provided in the axial hole; the rotating wheel is provided between the first support and the second support; the first spline shaft passes through the first support, the rotating wheel and the second support in sequence.

[0016] Through the above solution, the rotating wheel is between the first support and the second support, and the position of the first spline shaft can be kept fixed when it moves.

[0017] In the second aspect, the utility model provides a steel bar straightening machine, which uses the above-mentioned traction mechanism; the steel bar straightening machine includes a straightening mechanism; it includes two traction mechanisms, namely a first traction mechanism and a second traction mechanism; the first traction mechanism and the second traction mechanism are respectively located upstream and downstream of the straightening mechanism, which solves the problem of misalignment between the traction wheel and the feed port of the straightening mechanism.

[0018] In summary, the utility model has the following beneficial effects: in the direction perpendicular to the steel bar feeding, the upper and lower traction seats can slide against each other, thereby driving the traction wheel and the clamping wheel on the traction frame to slide forward and backward, and adjusting the positional relationship between the arc groove and the feeding port of the straightening mechanism. When in use, the arc groove to be used can be aligned with the feeding port, reducing the risk of the steel bar falling out of the arc groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of a straightening machine in an embodiment

[0020] Figure 2 This is an exploded view of the feeding mechanism of the embodiment

[0021] Figure 3 and Figure 4 They are the two auxiliary feed cylinders mentioned in the embodiment

[0022] Figure 5 Exploded view of the traction mechanism of the embodiment

[0023] Figure 6 Schematic diagram of the connection relationship between the driving device, the tensioning assembly and the driving assembly of the embodiment

[0024] Figure 7 This is an exploded view of the drive assembly of the embodiment

[0025] Figure 8 and Fig. 9 Schematic diagrams of the two tensioning components mentioned in the embodiments

[0026] Fig.10 Schematic diagram of the second spline shaft and the second spline sleeve

[0027] In the figure: 1, feeding mechanism; 11, upper beam; 12, lower beam; 121, lower beam groove; 13, lower screw rod; 131, first lower slider; 132, second lower slider; 14, upper screw rod; 141, first upper slider; 142, second upper slider; 15, first auxiliary feeding cylinder; 16, second auxiliary feeding cylinder; 17, rotating cylinder; 171, first bearing cavity; 18, cylinder shaft; 181, first limit table; 182, fifth bearing; 183, second bearing cavity; 2, first traction mechanism; 21, upper traction seat; 211, groove; 212, fixing groove; 213, first screw; 22, lower traction seat; 221, convex rail; 23, first column; 24, second column; 241, vertical groove; 25, first slider; 26, second slider; 261, vertical groove; 27, clamping wheel; 28, Traction wheel; 281, traction shaft; 29, cross beam; 291, pressure plate; 292, adjustment rod; 293, spring; 3, driving mechanism; 31, first spline shaft; 32, driving seat; 321, first support; 322, second support; 323, rotating wheel; 323, first spline sleeve; 4, tensioning mechanism; 41, tensioning wheel; 42, adjustment component; 421, adjustment frame; 422, adjustment groove; 423, adjustment shaft; 424, fixing nut; 425, adjustment column; 426, adjustment screw rod; 427, adjustment slide block; 5, driving device; 51, reducer; 511, first output shaft; 512, second output shaft; 52, transmission belt; 531, second spline sleeve; 532, second spline shaft; 6, modulation mechanism; 7, second traction mechanism; 8, cabinet; 9, shearing mechanism. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to the other component. The "connection" is not limited to fixed connection or movable connection. The specific connection method should be determined based on the specific technical problem to be solved.

[0030] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] Example:

[0033] A steel bar straightening machine, such as Figure 1 As shown, the steel bar straightening machine includes a cabinet 8, and the top of the cabinet 8 is a workbench. The workbench is provided with a feeding mechanism 1, a traction mechanism, a straightening mechanism and a shearing mechanism 9. The feeding mechanism 1 is used to assist the feeding of steel bars, the traction mechanism is used to feed the steel bars, the straightening mechanism has a feeding port, the straightening mechanism is used to straighten the steel bars, and the shearing mechanism 9 is used to cut the steel bars. The straightening mechanism, the shearing mechanism 9, and the positional relationship between the straightening mechanism, the traction mechanism, and the shearing mechanism 9 belong to conventional technical solutions in the field, and will not be repeated here.

[0034] In this embodiment, if Figure 5 As shown, the traction mechanism includes a traction frame, and a traction wheel 28 and a pressure wheel 27 arranged on the traction frame; at least two arc grooves are correspondingly arranged on the traction wheel 28 and the pressure wheel 27; the radius of the arc grooves is different, which is used to match steel bars of different diameters. The pressure wheel 27 is arranged above the traction wheel 28; the traction wheel 28 is driven to rotate by a driving assembly. When in use, the arc groove on the pressure wheel 27 and the arc groove on the traction wheel 28 clamp the steel bar, and the rotation of the traction wheel 28 drives the steel bar to be transported along the tangential direction.

[0035] In this embodiment, the traction mechanism further includes a traction seat, and the traction seat includes an upper traction seat 21 and a lower traction seat 22; the traction frame is arranged on the upper traction seat 21; the upper traction seat 21 and the lower traction seat 22 are slidably connected; and a fixing component is further included, and the fixing component can prevent the upper traction seat 21 and the lower traction seat 22 from sliding against each other. The sliding direction is perpendicular to the feeding direction of the steel bars. The upper traction seat and the lower traction seat can slide against each other, thereby driving the traction wheel 28 and the clamping wheel 27 on the traction frame to slide back and forth, and adjusting the positional relationship between the arc groove and the feed port of the straightening mechanism. When in use, the arc groove to be used can be aligned with the feed port, and after the steel bars come out of the traction wheel 28, they will not be subjected to oblique pulling force, which can reduce the risk of the steel bars escaping from the arc groove.

[0036] In this embodiment, the lower traction seat 22 is provided with a convex rail 221, and the upper traction seat 21 is provided with a groove 211 that matches the convex rail 221; the upper traction seat 21 is provided with a penetrating fixing groove 212; the lower traction seat 22 is provided with a fixing hole, and a thread is provided in the fixing hole; the fixing component includes a first screw 213; the first screw 213 passes through the fixing groove 212 and is connected to the fixing hole to fix the upper traction seat 21 and the lower traction seat 22. The cooperation between the convex rail 221 and the groove 211 can reduce the risk of the upper traction seat 21 and the lower traction seat 22 being separated, and can also prevent the upper traction seat 21 and the lower traction seat 22 from moving along the steel bar feeding direction. In other possible embodiments, the relationship between the convex rail 221 and the slide groove of the upper traction seat 21 and the lower traction seat 22 can be reversed, which belongs to the equivalent technical solution of this solution. In this embodiment, a gasket is further provided between the nut of the first screw 213 and the upper traction seat 21 , and the upper traction seat 21 and the lower traction seat 22 can be better fixed by the gasket.

[0037] In this embodiment, the traction frame includes a first column 23 and a second column 24 which are arranged opposite to each other, and vertical rails are arranged vertically on the first column 23 and the second column 24; a traction wheel 28 is arranged on the first slider 25, and a vertical groove 261241 which matches the vertical rail is arranged on the first slider 25; a clamping wheel 27 is arranged on the second slider 26, and a vertical groove 261241 which matches the vertical rail is also arranged on the second slider 26; the first slider 25 and the second slider 26 can slide up and down along the vertical rail. A clamping mechanism is also included, and the second slider 26 maintains a tendency to approach the first slider 25 through the clamping mechanism. The cooperation between the vertical rail and the vertical groove 261241 can easily replace the first slider 25 and the second slider 26; at the same time, the steel bar can be clamped by the clamping mechanism, the friction between the steel bar and the arc groove is increased, and the steel bar traction function is better realized.

[0038] In this embodiment, the clamping mechanism includes a crossbeam 29, a pressure plate 291, a spring 293 and an adjusting rod 292; the crossbeam 29 is arranged above the first column 23 and the second column 24, connecting the first column 23 and the second column 24; the pressure plate 291 is arranged between the crossbeam 29 and the second slider 26, and an opening matching the vertical rail is arranged on the pressure plate 291; the spring 293 is arranged between the second slider 26 and the pressure plate 291; the crossbeam 29 is provided with an adjustment hole with an internal thread, and the adjustment rod 292 is provided with an external thread matching the adjustment hole; the lower end of the adjustment rod 292 abuts against the pressure plate 291. By screwing the adjustment rod 292 to adjust the length of the adjustment rod 292 extending downward, the change in the position of the pressure plate 291 can control the deformation degree of the spring 293, and then adjust the strength of the clamping wheel 27 to clamp the steel bar, which can better adapt to steel bars of different sizes. On the other hand, there is no rigid contact between the steel bar and the pressing wheel 27 and the traction wheel 28, so as to prevent the protrusions on the steel bar from damaging the pressing wheel 27 and the traction wheel 28. A rod cap is provided on the top of the adjusting rod 292. When rotating the adjusting rod 292, holding the rod cap can make it easier to rotate the adjusting rod 292.

[0039] In this embodiment, a first bearing is disposed in the middle of the first slider 25, the first bearing is sleeved on the traction shaft 281, and the traction wheel 28 is disposed on the traction shaft 281; the traction shaft 281 is connected to the driving assembly, and the traction shaft 281 and the traction wheel 28 are driven to rotate by the driving assembly; the traction shaft 281 passes through the first slider 25. A second bearing is disposed in the middle of the second slider 26, and the second bearing is sleeved on the clamping shaft.

[0040] In this embodiment, if Figure 1 As shown, the traction mechanism includes a first traction mechanism 2 and a second traction mechanism 7, the first traction mechanism 2 is arranged upstream of the straightening mechanism, and the second traction mechanism 7 is arranged downstream of the straightening mechanism. It also includes a driving device 5, the driving device 5 includes a motor and a reducer 51; the motor is connected to the reducer 51; the reducer 51 is a double-output reducer 51; the motor output shaft is connected to the input shaft of the reducer 51; the reducer 51 includes a first output shaft 511 and a second output shaft 512; the first output shaft 511 is connected to the first traction mechanism 2 through a driving component, and the second output shaft 512 is connected to the second traction mechanism 7.

[0041] In this embodiment, if Figure 7As shown, the driving assembly includes a driving seat 32 and a first spline shaft 31; the driving seat 32 is arranged on a workbench. One end of the first spline shaft 31 is connected to the traction shaft 281 of the first traction mechanism 2; the other end is connected to the driving seat 32; a rotating wheel 323 is arranged on the driving seat 32; the rotating wheel 323 is connected to the first spline shaft 31 through the first spline sleeve 323; the rotating wheel 323 can drive the first spline shaft 31 to rotate. The driving seat 32 includes a first support 321 and a second support 322; the first support 321 and the second support 322 are provided with shaft holes opposite to each other; the shaft holes are both provided with a third bearing; the rotating wheel 323 is arranged between the first support 321 and the second support 322; the first spline shaft 31 passes through the first support 321, the rotating wheel 323 and the second support 322 in sequence. The rotating wheel 323 is between the first support 321 and the second support 322, and the position of the first spline shaft 31 can be kept fixed when it moves.

[0042] In this embodiment, if Figure 6 As shown, the first output shaft 511 is provided with a first output wheel; the first output wheel is connected to the rotating wheel 323 through a transmission mechanism, and the transmission mechanism includes a transmission belt 52 and a tensioning assembly; the tensioning assembly is arranged between the first output shaft 511 and the rotating wheel 323; the tensioning assembly is used to tension the transmission belt 52. The transmission belt 52 is one of a belt, a gear belt, and a chain; correspondingly, the rotating wheel 323 and the first output wheel are one of a pulley, a gear, and a sprocket.

[0043] In this embodiment, the tensioning assembly includes a tensioning wheel 41 and an adjusting component 42, and the transmission belt 52 passes around the first output wheel, the tensioning wheel 41 and the rotating wheel 323; the tensioning wheel 41 is arranged on the adjusting component 42, and the position of the tensioning wheel 41 can be adjusted by the adjusting component 42, so that the transmission belt 52 is in a tensioned or relaxed state. When replacing or repairing the transmission belt 52, the tensioning wheel 41 is adjusted to make the transmission belt 52 in a relaxed state, and the transmission belt 52 can be easily removed. When in use or when the transmission belt 52 is extended due to aging, the transmission belt 52 can be kept in a tensioned state by adjusting the position of the tensioning wheel 41. Similarly, the tensioning wheel 41 is one of a pulley, a gear, and a sprocket according to the type of the transmission belt 52.

[0044] In this embodiment, if Figure 8As shown, the adjusting component 42 includes an adjusting frame 421 and an adjusting shaft 423, and an adjusting slot 422 is arranged on the adjusting frame 421. A fourth bearing is arranged on the adjusting shaft 423, and the tensioning wheel 41 is connected to the adjusting shaft 423 through the fourth bearing. The adjusting shaft 423 is also provided with a thread and two fixing nuts 424; the adjusting shaft 423 passes through the adjusting slot 422, and the two fixing nuts 424 are located at both ends of the adjusting slot 422, and the adjusting shaft 423 is fixed to the adjusting frame 421 by the fixing nuts 424. According to this embodiment, after loosening the fixing nuts 424, the height of the adjusting shaft 423 and the tensioning wheel 41 on the adjusting slot 422 can be manually adjusted to achieve the tensioning or loosening of the belt.

[0045] In other possible embodiments, Fig. 9 As shown, the adjusting component 42 includes an adjusting column 425, an adjusting slot 422 is provided on the adjusting column 425, an adjusting screw rod 426 is provided in the adjusting slot 422, and an adjusting slider 427 is provided on the screw rod; one end of the adjusting shaft 423 is connected to the slider, and the other end is connected to the tension wheel 41 through a bearing. By rotating the adjusting screw rod 426, the adjusting slider 427 can be moved up and down.

[0046] In this embodiment, if Fig.10 As shown, a second spline sleeve 531 is provided on the second output shaft 512, and a second spline shaft 532 is provided on the traction shaft 281 of the second traction mechanism 7; the second spline shaft 532 is inserted into the second spline sleeve 531; the second spline shaft 532 can slide in the second spline sleeve 531; the second spline sleeve 531 is coaxially arranged with the second output shaft 512. Through the above scheme, the second output shaft 512 can drive the second traction mechanism 7 to rotate, and ensure that after the second traction mechanism 7 is adjusted left and right, the second traction shaft 281 can obtain the power output by the second output shaft 512. In other possible embodiments, a second spline shaft 532 is provided on the second output shaft 512, and a second spline sleeve 531 is provided on the traction shaft 281 of the second traction mechanism 7; the second spline shaft 532 is inserted into the second spline sleeve 531; the second spline shaft 532 can slide in the second spline sleeve 531; the second spline sleeve 531, the second spline shaft 532 and the traction shaft 281 on the second traction mechanism 7 are coaxially arranged.

[0047] In this embodiment, if Figure 2As shown, the feeding mechanism 1 includes an auxiliary feeding cylinder, which includes a rotating cylinder 17 and a cylinder shaft 18. The rotating cylinder 17 is sleeved on the cylinder shaft 18, and the rotating cylinder 17 can rotate on the same axis; it includes two auxiliary feeding cylinders, a first auxiliary feeding cylinder 15 and a second auxiliary feeding cylinder 16; the two auxiliary feeding cylinders are vertically arranged; there is a steel bar feeding gap between the two auxiliary feeding cylinders; the width of the feeding gap is adjusted by adjusting the positions of the two auxiliary feeding cylinders. The center line of the feeding gap is aligned with the feeding port of the straightening mechanism. Through the first auxiliary feeding cylinder 15 and the second auxiliary feeding cylinder 16, the stress of the steel bar in the left and right directions can be offset, and the probability of the steel bar escaping from the traction wheel 28 can be reduced.

[0048] In this embodiment, the feeding mechanism 1 further includes a feeding frame, which includes an upper beam 11 and a lower beam 12; a lower beam groove 121 is provided on the lower beam 12, and a lower screw rod 13 is provided in the lower beam groove 121; an upper beam 11 groove corresponding to the lower beam groove 121 is provided on the upper beam 11, and an upper screw rod 14 is provided in the upper beam 11 groove. A first lower slider 131 and a second lower slider 132 are provided on the lower screw rod 13, and the first lower slider 131 and the second lower slider 132 are threadedly matched with the lower screw rod 13; the threads on the first lower slider 131 and the second lower slider 132 rotate in opposite directions. A first upper slider 141 and a second upper slider 142 are provided on the upper screw rod 14, and the first upper slider 141 and the second upper slider 142 are threadedly matched with the upper screw rod 14; the threads on the first upper slider 141 and the second upper slider 142 rotate in opposite directions. The barrel shaft 18 of the first auxiliary feed barrel 15 is respectively connected to the first upper slider 141 and the first lower slider 131; the barrel shaft 18 of the second auxiliary feed barrel 16 is respectively connected to the second upper slider 142 and the second lower slider 132. When the upper screw rod 14 and the lower screw rod 13 are rotated, the first auxiliary feed barrel 15 and the second auxiliary feed barrel 16 are moved closer to or farther away from each other, which can adapt to the feeding of steel bars of different sizes. Preferably, an upper crank is provided on the upper screw rod 14, and a lower crank is provided on the lower screw rod 13. Through the above scheme, while adapting to steel bars of different sizes, it can also ensure that the center line of the feed seam can be kept corresponding to the feed port of the straightening mechanism.

[0049] In this embodiment, if Figure 3 As shown, the rotating drum 17 is connected to the cylinder shaft 18 through the fifth bearing 182. A first limiting platform 181 is provided below the cylinder shaft 18; the inner ring of the fifth bearing 182 is sleeved on the cylinder shaft 18, and the first limiting platform 181 can support the inner ring of the fifth bearing 182; a first bearing cavity 171 is provided below the rotating drum 17; a second limiting platform is provided in the first bearing cavity 171; the fifth bearing 182 is provided in the first bearing cavity 171, and the outer ring of the fifth bearing 182 is connected to the cylinder shaft 18; the outer ring of the fifth bearing 182 supports the second limiting platform.

[0050] In other possible embodiments, a first limit platform 181 is provided below the cylindrical shaft 18, and the fifth bearing 182 is a plane bearing; the fifth bearing 182 is sleeved on the cylindrical shaft 18; the lower part of the fifth bearing 182 abuts against the first limit platform 181; and the upper part abuts against the rotating drum 17.

[0051] In other possible embodiments, Figure 4 As shown, a second bearing cavity 183 is disposed above the rotating drum 17 , and a sixth bearing is disposed in the second bearing cavity 183 ; the outer ring of the sixth bearing is connected to the rotating drum 17 .

[0052] Through the above solution, the rotating drum 17 can rotate smoothly on the drum shaft 18, which is beneficial to the feeding of steel bars.

[0053] How to use: Determine which arc groove on the traction wheel 28 to use according to the size of the steel bar, adjust the position of the upper traction seat 21 so that the arc groove is aligned with the feed opening of the straightening mechanism; shake the crank of the feed mechanism 1 to make the size of the feed gap adapt to the steel bar. After completing the above operations, start the machine.

[0054] By adopting the above solution, the arc grooves on the upstream and downstream traction wheels 28 can be aligned with the feed inlet and the discharge outlet of the straightening frame, thereby reducing the risk of steel bar derailment.

[0055] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A traction mechanism, the traction mechanism is used for a steel bar straightening machine, the steel bar straightening machine includes a workbench; the traction mechanism includes a traction frame, and a traction wheel and a clamping wheel arranged on the traction frame; at least two arc grooves are correspondingly arranged on the traction wheel and the clamping wheel; the clamping wheel is arranged above the traction wheel; the traction wheel is driven to rotate by a driving assembly; the characteristics are: It also includes a traction seat, which includes an upper traction seat and a lower traction seat; the traction frame is arranged on the upper traction seat; the upper traction seat and the lower traction seat are slidably connected; and it also includes a fixing component, which is used to prevent the upper traction seat and the lower traction seat from sliding relative to each other.

2. A traction mechanism according to claim 1, characterized in that: The lower traction seat is provided with a convex rail, and the upper traction seat is provided with a groove matching the convex rail; the upper traction seat is provided with a penetrating fixing groove; the lower traction seat is provided with a fixing hole, and the fixing hole is provided with a thread; the fixing component includes a first screw; the first screw passes through the fixing groove and is connected with the fixing hole to fix the upper traction seat and the lower traction seat.

3. A traction mechanism according to claim 2, characterized in that: The traction frame includes a first column and a second column arranged opposite to each other, and vertical rails are vertically arranged on the first column and the second column; a traction wheel is arranged on the first slider, and a vertical groove matching the vertical rail is arranged on the first slider; a clamping wheel is arranged on the second slider, and a vertical groove matching the vertical rail is also arranged on the second slider; and a clamping mechanism is also included, and the second slider maintains a tendency to approach the first slider through the clamping mechanism.

4. A traction mechanism according to claim 3, characterized in that: The clamping mechanism includes a crossbeam, a pressure plate, a spring and an adjusting rod; the crossbeam is arranged above the first column and the second column, connecting the first column and the second column; the pressure plate is arranged between the crossbeam and the second slider, and is provided with an opening matching the vertical rail; the spring is arranged between the second slider and the pressure plate; an adjusting hole with an internal thread is provided on the crossbeam, and an external thread matching the adjusting hole is provided on the adjusting rod; the lower end of the adjusting rod abuts against the pressure plate.

5. A traction mechanism according to claim 4, characterized in that: A rod cap is arranged on the top of the adjusting rod.

6. A traction mechanism according to claim 4, characterized in that: The driving assembly includes a driving seat and a first spline shaft; the driving seat is arranged on a workbench; one end of the first spline shaft passes through a first slider and is connected to a traction wheel, and the other end is connected to the driving seat; a rotating wheel is arranged on the driving seat; the rotating wheel is connected to the first spline shaft through a first spline sleeve; the rotating wheel can drive the first spline shaft to rotate.

7. A traction mechanism according to claim 6, characterized in that: The driving seat includes a first support and a second support; the first support and the second support are provided with axial holes opposite to each other; a third bearing is provided in the axial hole; the rotating wheel is provided between the first support and the second support; the first spline shaft passes through the first support, the rotating wheel and the second support in sequence.

8. A steel bar straightening machine, characterized by: It comprises the traction mechanism as described in any one of claims 1 to 5; the steel bar straightening machine comprises a straightening mechanism; it comprises two traction mechanisms, namely a first traction mechanism and a second traction mechanism; the first traction mechanism and the second traction mechanism are respectively located upstream and downstream of the straightening mechanism.

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