Automatic reinforcing steel bar straightening, derusting and cutting device

Abstract

The invention discloses an automatic reinforcing steel bar straightening, derusting and cutting device which comprises a bottom plate, four supporting legs are fixedly mounted at the bottom of the bottom plate, a first mounting frame is fixedly mounted at the top of the bottom plate, a third connecting rod is slidably mounted at the top of the first mounting frame, and two rotating frames are rotatably mounted at the bottom of the third connecting rod; straightening rollers are rotationally mounted in inner cavities of the two rotating frames correspondingly. The limiting mechanism is used for fixing the reinforcing steel bars to prevent the reinforcing steel bars from rotating in the straightening process; the distance between the inner wall of a second groove and a clamping plate is controlled through two first air cylinders, then steel bars are limited, the second auxiliary roller also starts to rotate through friction between the steel bars and the second auxiliary roller when the steel bars slide, a first connecting rod is driven by an output shaft of a second motor to rotate, and transmission is achieved through a second connecting rod and a third connecting rod. The connecting block can be driven to move up and down, the connecting block drives the two rotating frames to rotate, and meanwhile the two straightening rollers extrude the outer surface of the reinforcing steel bar to straighten the reinforcing steel bar.

Description

Technical Field

[0001] The invention relates to the technical field of steel bar straightening, rust removal and cutting, in particular to an automatic steel bar straightening, rust removal and cutting device. Background Art

[0002] The automatic steel bar straightening, rust removal and cutting device is an efficient steel bar processing equipment that can straighten, rust remove and cut steel bars at the same time. The emergence of this device has greatly improved the efficiency and quality of steel bar processing and reduced the difficulty and cost of manual operation.

[0003] After searching, the patent document with publication number CN113103127A discloses an automatic steel bar straightening, rust removal and cutting device, which includes a straightening and rust removal device, a cutting device, and a belt one. The straightening effect can be changed by adjusting the height of five bearings; rotating the nut two drives the screw rod two to rise or fall, drives the rotating block to rise or fall, drives the inner ring and the outer ring to rotate, drives one end of the three connecting rods three to rotate, drives the three bearing frames two to rotate, and then drives the three grinding wheels to gather inward or expand outward, so as to grind steel bars of different specifications; pushes the slider three to slide in the spring three, thereby changing the position of the functional block, and then changing the length of the cut steel bar.

[0004] When the above device is in use, the steel bar passes between the five bearings. By adjusting the height between the five bearings, the bearings straighten the steel bar. However, there is a lack of limit on the steel bar during use. When the steel bar passes between two adjacent bearings at the bending part, the steel bar may rotate, making it difficult to achieve the straightening effect of the steel bar.

[0005] Therefore, in view of the above problems, an automatic steel bar straightening, rust removal and cutting device is proposed. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art and solve the problem that the steel bars are easy to rotate when they are straightened, the present invention provides an automatic steel bar straightening, rust removal and cutting device.

[0007] An automatic steel bar straightening, rust removal and cutting device comprises a bottom plate, four supporting legs are fixedly installed at the bottom of the bottom plate, a first mounting frame is fixedly installed at the top of the bottom plate, a third connecting rod is slidably installed at the top of the first mounting frame, two rotating frames are rotatably installed at the bottom of the third connecting rod, and straightening rollers are rotatably installed in the inner cavities of the two rotating frames respectively; It also includes a limiting mechanism for fixing the steel bar to prevent the steel bar from rotating during the straightening process; The limiting mechanism includes a second groove, the second groove is opened at the top of the first mounting frame, the inner surface of the second groove is opened with a third groove, a plurality of second auxiliary rollers are rotatably installed on the inner surface of the third groove, a clamping plate is slidably installed on the inner surface of the second groove, two fourth connecting rods are fixedly connected to one side of the clamping plate, both of the two fourth connecting rods pass through the first mounting frame and are fixedly connected to the first cylinder, the first cylinder is fixedly installed on one side of the first mounting frame, two rust removal rollers are rotatably installed on one side of the first mounting frame, two fourth mounting blocks are fixedly installed on one side of the first mounting frame, the two fourth mounting blocks are commonly fixedly connected to the second mounting frame, and a cutter is slidably installed in the inner cavity of the second mounting frame.

[0008] Preferably, two first grooves are provided on the top of the base plate, and a rotating shaft is rotatably installed on the inner surfaces of the two first grooves. A driving roller is fixedly connected to the top of the rotating shaft. A limiting ring and a support plate are fixedly installed on the top of the base plate, and four first spring rods are fixedly connected to one side of the support plate. One end of the four first spring rods is commonly fixedly connected to a concave plate, and two first auxiliary rollers are rotatably installed in the inner cavity of the concave plate.

[0009] Preferably, the bottom of each of the rotating shafts is fixedly connected to a first pulley, and the two first pulleys are driven by belts, wherein the bottom of one of the first pulleys is fixedly connected to a first motor, and the first motor is fixedly installed on the bottom of the base plate.

[0010] Preferably, a triangular mounting block is fixedly installed on the top of the first mounting frame, a second motor is fixedly connected to one side of the triangular mounting block, a first connecting rod is fixedly connected to the output shaft of the second motor, one end of the first connecting rod is rotatably connected to the second connecting rod, and the third connecting rod is rotatably installed on one end of the second connecting rod.

[0011] Preferably, a connecting block is fixedly installed at the bottom of the third connecting rod, the two rotating frames are respectively rotatably installed on both sides of the connecting block, the middle parts of the two rotating frames are jointly rotatably connected with a second spring rod, the bottom of the base plate is fixedly connected to a rust slag collection box, and the bottom of the third groove passes through the base plate and extends to the inner cavity of the rust slag collection box.

[0012] Preferably, a mounting plate and two first mounting blocks are fixedly connected to one side of the first mounting frame, the two rust removal rollers are rotatably mounted on one side of the two first mounting blocks, the other sides of the two rust removal rollers are rotatably connected to two second mounting blocks, the two second mounting blocks are fixedly mounted on the bottom of the mounting plate, one side of one of the rust removal rollers is fixedly connected to a second pulley, a third motor is fixedly mounted on the top of the mounting plate, the output shaft of the third motor is fixedly connected to a third pulley, and the third pulley and the second pulley are driven by a second belt.

[0013] Preferably, an electric telescopic rod is fixedly installed on the bottom of the mounting plate, the output end of the electric telescopic rod is fixedly connected to a limiting block, a third mounting block is fixedly installed on one side of the first mounting frame, a spring is fixedly connected to the top of the third mounting block, one end of the spring is fixedly connected to the limiting plate, and one end of the limiting plate is rotatably installed on one side of the first mounting frame.

[0014] Preferably, the two fourth mounting blocks are commonly fixedly connected to a fifth mounting block on one side, the second mounting bracket is fixedly mounted on the top of the fifth mounting block, a knife groove is provided on the top of the fifth mounting block, a second cylinder is fixedly mounted on the top of the second mounting bracket, and the output end of the second cylinder passes through the second mounting bracket and is fixedly mounted on the top of the cutter.

[0015] The present invention is beneficial in that: 1. The present invention controls the distance between the inner wall of the second groove and the clamping plate by extending or shortening the two first cylinders, so that the gap between the second groove and the clamping plate limits the steel bar. When the steel bar slides, it rubs against the second auxiliary roller to make the second auxiliary roller start to rotate. The first connecting rod is rotated by the output shaft of the second motor, and the second connecting rod and the third connecting rod are driven to drive the connecting block to move up and down. The connecting block drives the two rotating frames to rotate, and at the same time, the two straightening rollers squeeze the outer surface of the steel bar to straighten the steel bar.

[0016] 2. The present invention first passes the steel bar through a limiting ring, and then passes the steel bar between two driving rollers and two first auxiliary rollers, and the first motor output shaft drives one of the first pulleys to rotate. After the belt transmission, the two first pulleys start to rotate and drive the two driving rollers to rotate. The two driving rollers cooperate with the two first auxiliary rollers to drive the steel bar to move, and then the steel bar moves to the inner cavity of the second groove.

[0017] 3. The present invention drives the third pulley to rotate through the output shaft of the third motor, and the second pulley also starts to rotate through the second belt transmission. The second pulley drives the rust removal roller to rotate, and the friction with the surface of the steel bar can clean the rust on the surface of the steel bar. The cleaned rust falls into the rust slag collection box, which is convenient for the staff to clean the rust slag. At the same time, the steel bar can be limited by the limit block to avoid the steel bar and the rust removal roller from shaking randomly during the rust removal process. Then the steel bar moves to the bottom of the cutter, and the cutter shears the steel bar under the action of the second cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 A schematic diagram of a drive roller installation structure according to an embodiment of the present invention; Figure 3 A schematic diagram of the bottom structure of a base plate according to an embodiment of the present invention; Figure 4 A schematic diagram of a straightening roller connection structure according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a limiting mechanism according to an embodiment of the present invention; Figure 6 A schematic diagram of the installation structure of a rust removal roller connected to a limiting plate according to an embodiment of the present invention; Figure 7 A schematic diagram of a straightening roller connection structure according to an embodiment of the present invention; Figure 8 The figure is a schematic diagram of a cutter connection structure according to an embodiment of the present invention.

[0020] In the figure: 1, bottom plate; 11, first groove; 12, support leg; 21, rotating shaft; 211, first pulley; 212, belt; 213, first motor; 22, driving roller; 23, limiting ring; 24, supporting plate; 25, first spring rod; 26, concave plate; 27, first auxiliary roller; 3, first mounting frame; 31, second groove; 311, third groove; 32, second auxiliary roller; 33, triangular mounting block; 331, second motor; 332, first connecting rod; 333, second connecting rod; 334, third connecting rod; 34, connecting block; 35, rotating frame; 351, The second spring rod; 352, straightening roller; 36, rust slag collection box; 4, clamping plate; 41, fourth connecting rod; 42, first cylinder; 5, first mounting block; 51, rust removal roller; 52, mounting plate; 521, second mounting block; 53, second pulley; 54, second belt; 55, third pulley; 56, third motor; 57, electric telescopic rod; 571, limit block; 58, third mounting block; 581, spring; 582, limit plate; 6, fourth mounting block; 61, fifth mounting block; 611, knife groove; 62, second mounting frame; 63, second cylinder; 64, cutter. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figures 1 to 8 As shown, an automatic steel bar straightening, rust removal and cutting device comprises a base plate 1, four supporting legs 12 are fixedly installed at the bottom of the base plate 1, a first mounting frame 3 is fixedly installed at the top of the base plate 1, a third connecting rod 334 is slidably installed at the top of the first mounting frame 3, two rotating frames 35 are rotatably installed at the bottom of the third connecting rod 334, and straightening rollers 352 are rotatably installed in the inner cavities of the two rotating frames 35; a limiting mechanism is also included for fixing the steel bar to prevent the steel bar from rotating during the straightening process; the limiting mechanism comprises a second groove 31, the second groove 31 is opened at the top of the first mounting frame 3, and the inner surface of the second groove 31 is opened with a third groove 311, a plurality of second auxiliary rollers 32 are rotatably installed on the inner surface of the third groove 311, a clamping plate 4 is slidably installed on the inner surface of the second groove 31, two fourth connecting rods 41 are fixedly connected to one side of the clamping plate 4, the two fourth connecting rods 41 both pass through the first mounting frame 3 and are fixedly connected to the first cylinder 42, the first cylinder 42 is fixedly installed on one side of the first mounting frame 3, two rust removal rollers 51 are rotatably installed on one side of the first mounting frame 3, two fourth mounting blocks 6 are fixedly installed on one side of the first mounting frame 3, the two fourth mounting blocks 6 are commonly fixedly connected to the second mounting frame 62, and a cutter 64 is slidably installed in the inner cavity of the second mounting frame 62.

[0023] When straightening the steel bars, due to the high hardness of the steel bars, for the bent steel bars during modulation, usually only two rollers are used to clamp the steel bars and allow the steel bars to pass between the two rollers to achieve straightening of the steel bars. In actual use, if the steel bars rotate during the modulation process, it will be difficult for the two rollers to cooperate to straighten the steel bars.

[0024] When the present invention is in use, the steel bar is first placed on the top of the base plate 1, and then the steel bar is driven to move to the bottom of the two straightening rollers 352. At this time, the steel bar is in the inner cavity of the second groove 31, and the output end of the first cylinder 42 drives the fourth connecting rod 41 to move so that the fourth connecting rod 41 can drive the clamping plate 4 to slide on the inner surface of the second groove 31. The clamping plate 4 cooperates with the inner wall of the second groove 31 to resist the steel bar, fix the steel bar and can also perform preliminary straightening on the steel bar. At this time, the two straightening rollers 352 rotate on the top of the steel bar, and the steel bar cannot rotate at this time, thereby achieving the purpose of straightening the steel bar. As the steel bar moves, the two mounting plates 52 contact the outer surface of the steel bar, and the rust on the outer surface of the steel bar is removed by friction. As the steel bar continues to move to the bottom of the cutter 64, the cutter 64 can cut the steel bar.

[0025] Further, such as Figure 2 and Figure 3As shown, the top of the bottom plate 1 is provided with two first grooves 11, the inner surfaces of the two first grooves 11 are rotatably mounted with a rotating shaft 21, the top of the rotating shaft 21 is fixedly connected with a driving roller 22, the top of the bottom plate 1 is fixedly mounted with a limiting ring 23 and a support plate 24, one side of the support plate 24 is fixedly connected with four first spring rods 25, one end of the four first spring rods 25 is commonly fixedly connected with a concave plate 26, and the inner cavity of the concave plate 26 is rotatably mounted with two first auxiliary rollers 27; The bottom of the rotating shaft 21 is fixedly connected with a first pulley 211 , and the two first pulleys 211 are driven by belts 212 , wherein the bottom of one of the first pulleys 211 is fixedly connected with a first motor 213 , and the first motor 213 is fixedly installed at the bottom of the base plate 1 .

[0026] When the present invention is in use, the steel bar is first passed through the inner ring of the limiting ring 23, and then the first pulley 211 is rotated by the output shaft of the first motor 213. After the transmission by the belt 212, the two first pulleys 211 start to rotate, and at the same time, the two belts 212 respectively rotate the two rotating shafts 21 and the driving roller 22. At this time, the two first auxiliary rollers 27 cooperate with the two driving rollers 22 under the action of the four first spring rods 25 to clamp the steel bar, and then the steel bar will move under the action of the driving roller 22.

[0027] Further, such as Figure 4 As shown, a triangular mounting block 33 is fixedly mounted on the top of the first mounting frame 3, a second motor 331 is fixedly connected to one side of the triangular mounting block 33, a first connecting rod 332 is fixedly connected to the output shaft of the second motor 331, one end of the first connecting rod 332 is rotatably connected to the second connecting rod 333, and the third connecting rod 334 is rotatably mounted on one end of the second connecting rod 333; A connecting block 34 is fixedly installed at the bottom of the third connecting rod 334, and the two rotating frames 35 are respectively rotatably installed on both sides of the connecting block 34. The middle parts of the two rotating frames 35 are jointly rotatably connected with a second spring rod 351. A rust slag collection box 36 is fixedly connected to the bottom of the bottom plate 1, and the bottom of the third groove 311 passes through the bottom plate 1 and extends to the inner cavity of the rust slag collection box 36.

[0028] When the present invention is in use, the output shaft of the second motor 331 drives the first connecting rod 332 to rotate, and then cooperates with the second connecting rod 333 and the third connecting rod 334 to achieve the purpose of moving the connecting block 34 up and down. The second spring rod 351 can keep the two rotating frames 35 in a state of tending to approach each other. During operation, the steel bars pass through the tops of the second auxiliary rollers 32, driving the second auxiliary rollers 32 to rotate. This can reduce the friction of the entire device on the steel bars. At the same time, during the process of straightening the steel bars, due to the compression of the steel bars, some rust residue will fall off the surface of the steel bars, and the rust residue will fall directly into the rust residue collection box 36. The bottom of the rust residue collection box 36 is an inclined plane. The rust residue that falls into the rust residue collection box 36 will slide along the bottom of the rust residue collection box 36, which is convenient for the staff to collect the rust residue.

[0029] Further, such as Figure 6 and Figure 7 As shown, a mounting plate 52 and two first mounting blocks 5 are fixedly connected to one side of the first mounting frame 3, two rust removal rollers 51 are rotatably mounted on one side of the two first mounting blocks 5, and two second mounting blocks 521 are rotatably mounted on the other side of the two rust removal rollers 51, and two second mounting blocks 521 are fixedly mounted on the bottom of the mounting plate 52, one side of one of the rust removal rollers 51 is fixedly connected to a second pulley 53, a third motor 56 is fixedly mounted on the top of the mounting plate 52, and a third pulley 55 is fixedly connected to the output shaft of the third motor 56, and the third pulley 55 and the second pulley 53 are driven by a second belt 54; An electric telescopic rod 57 is fixedly installed at the bottom of the mounting plate 52, and the output end of the electric telescopic rod 57 is fixedly connected to a limiting block 571. A third mounting block 58 is fixedly installed on one side of the first mounting frame 3, and a spring 581 is fixedly connected to the top of the third mounting block 58. One end of the spring 581 is fixedly connected to a limiting plate 582, and one end of the limiting plate 582 is rotatably installed on one side of the first mounting frame 3.

[0030] When the present invention is used, the steel bar is first passed through between the two rust removal rollers 51. At this time, the spring 581 supports the limit plate 582, so that the limit plate 582 is in a tilted state to prevent the steel bar from entering the bottom of the two rust removal rollers 51. After the steel bar enters between the two rust removal rollers 51, the electric telescopic rod 57 is extended to make the limit block 571 against the top of the steel bar; The output shaft of the third motor 56 rotates with the third pulley 55, which is driven by the second belt 54. One of the rust removal rollers 51 starts to rotate, and then the steel bar rotates with the rust removal roller 51. At the same time, the other rust removal roller 51 also rotates due to the friction with the steel bar. At this time, the limit block 571 can prevent the steel bar from separating from the two rust removal rollers 51. The rust residue on the surface of the steel bar can be cleaned by making the rust removal rollers 51 rub against the steel bar, and the cleaned rust residue falls into the inner cavity of the rust residue collection box 36.

[0031] Further, such as Figure 8 As shown, the two fourth mounting blocks 6 are commonly fixedly connected to a fifth mounting block 61 on one side, the second mounting frame 62 is fixedly mounted on the top of the fifth mounting block 61, a knife groove 611 is provided on the top of the fifth mounting block 61, a second cylinder 63 is fixedly mounted on the top of the second mounting frame 62, and the output end of the second cylinder 63 passes through the second mounting frame 62 and is fixedly mounted on the top of the cutter 64.

[0032] When the present invention is in use, after the steel bars are rust-removed, the steel bars will move to the bottom of the second mounting frame 62. At this time, as needed, the output end of the second cylinder 63 drives the cutter 64 to move downward to cut the steel bars, so that the bottom of the cutter 64 enters the knife groove 611, and the shearing of the steel bars can be completed.

[0033] Working principle: First, the steel bar passes through the limiting ring 23, and then the steel bar passes between the two driving rollers 22 and the two first auxiliary rollers 27, and the output shaft of the first motor 213 drives one of the first pulleys 211 to rotate, and the two first pulleys 211 start to rotate and drive the two driving rollers 22 to rotate, and the two driving rollers 22 cooperate with the two first auxiliary rollers 27 to drive the steel bar to move, and then the steel bar moves to the inner cavity of the second groove 31, and the two first cylinders 42 are extended or shortened according to the diameter of the steel bar. The distance between the inner wall of the second groove 31 and the clamping plate 4 is controlled, so that the gap between the second groove 31 and the clamping plate 4 limits the steel bar. When the steel bar slides, it rubs against the second auxiliary roller 32 to make the second auxiliary roller 32 start to rotate. The output shaft of the second motor 331 drives the first connecting rod 332 to rotate, and the second connecting rod 333 and the third connecting rod 334 are driven to drive the connecting block 34 to move up and down. The connecting block 34 drives the two rotating frames 35 to rotate. At the same time, the two straightening rollers 352 squeeze the outer surface of the steel bar to straighten the steel bar.

[0034] After the steel bar is straightened, as the steel bar continues to move, it moves between the two rust removal rollers 51 under the action of the limit plate 582, and the output shaft of the third motor 56 rotates with the third pulley 55, and the second pulley 53 also starts to rotate after being driven by the second belt 54. The second pulley 53 rotates with the rust removal roller 51, and the friction with the surface of the steel bar can clean the rust on the surface of the steel bar. The cleaned rust falls into the rust slag collection box 36, which is convenient for the staff to clean the rust slag. At the same time, the steel bar can be limited by the limit block 571 to avoid the steel bar and the rust removal roller 51 from shaking randomly during the rust removal process. Then the steel bar moves to the bottom of the cutter 64, and the cutter 64 shears the steel bar under the action of the second cylinder 63.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An automatic steel bar straightening, rust removal and cutting device, comprising a base plate (1), four supporting legs (12) being fixedly mounted on the bottom of the base plate (1), a first mounting frame (3) being fixedly mounted on the top of the base plate (1), a third connecting rod (334) being slidably mounted on the top of the first mounting frame (3), two rotating frames (35) being rotatably mounted on the bottom of the third connecting rod (334), and straightening rollers (352) being rotatably mounted in the inner cavities of the two rotating frames (35); It also includes a limiting mechanism for fixing the steel bar to prevent the steel bar from rotating during the straightening process; Features: The limiting mechanism comprises a second groove (31), the second groove (31) being formed at the top of the first mounting frame (3), a third groove (311) being formed on the inner surface of the second groove (31), a plurality of second auxiliary rollers (32) being rotatably mounted on the inner surface of the third groove (311), a clamping plate (4) being slidably mounted on the inner surface of the second groove (31), two fourth connecting rods (41) being fixedly connected to one side of the clamping plate (4), the two fourth connecting rods (41) both passing through the first mounting frame (3) and being fixedly connected to a first cylinder (42), the first cylinder (42) being fixedly mounted on one side of the first mounting frame (3), two rust removal rollers (51) being rotatably mounted on one side of the first mounting frame (3), two fourth mounting blocks (6) being fixedly mounted on one side of the first mounting frame (3), the two fourth mounting blocks (6) being fixedly connected to a second mounting frame (62), and a cutter (64) being slidably mounted in the inner cavity of the second mounting frame (62).

2. The automatic steel bar straightening, rust removal and cutting device according to claim 1 is characterized by: The top of the bottom plate (1) is provided with two first grooves (11), the inner surfaces of the two first grooves (11) are both rotatably mounted with a rotating shaft (21), the top of the rotating shaft (21) is fixedly connected with a driving roller (22), the top of the bottom plate (1) is fixedly mounted with a limiting ring (23) and a support plate (24), one side of the support plate (24) is fixedly connected with four first spring rods (25), one end of the four first spring rods (25) is commonly fixedly connected with a concave plate (26), and the inner cavity of the concave plate (26) is rotatably mounted with two first auxiliary rollers (27).

3. The automatic steel bar straightening, rust removal and cutting device according to claim 2 is characterized by: The bottom of each of the rotating shafts (21) is fixedly connected to a first belt pulley (211), and the two first belt pulleys (211) are driven via belts (212), wherein the bottom of one of the first belt pulleys (211) is fixedly connected to a first motor (213), and the first motor (213) is fixedly mounted on the bottom of the base plate (1).

4. The automatic steel bar straightening, rust removal and cutting device according to claim 3 is characterized by: A triangular mounting block (33) is fixedly mounted on the top of the first mounting frame (3); a second motor (331) is fixedly connected to one side of the triangular mounting block (33); an output shaft of the second motor (331) is fixedly connected to a first connecting rod (332); one end of the first connecting rod (332) is rotatably connected to the second connecting rod (333); and the third connecting rod (334) is rotatably mounted on one end of the second connecting rod (333).

5. The automatic steel bar straightening, rust removal and cutting device according to claim 4 is characterized by: A connecting block (34) is fixedly mounted on the bottom of the third connecting rod (334); the two rotating frames (35) are respectively rotatably mounted on both sides of the connecting block (34); a second spring rod (351) is rotatably connected to the middle of the two rotating frames (35); a rust slag collection box (36) is fixedly connected to the bottom of the bottom plate (1); and the bottom of the third groove (311) passes through the bottom plate (1) and extends to the inner cavity of the rust slag collection box (36).

6. The automatic steel bar straightening, rust removal and cutting device according to claim 5, characterized in that: One side of the first mounting frame (3) is fixedly connected to a mounting plate (52) and two first mounting blocks (5); the two rust removal rollers (51) are rotatably mounted on one side of the two first mounting blocks (5); the other sides of the two rust removal rollers (51) are rotatably connected to two second mounting blocks (521); the two second mounting blocks (521) are fixedly mounted on the bottom of the mounting plate (52); one side of one of the rust removal rollers (51) is fixedly connected to a second pulley (53); a third motor (56) is fixedly mounted on the top of the mounting plate (52); an output shaft of the third motor (56) is fixedly connected to a third pulley (55); the third pulley (55) and the second pulley (53) are driven via a second belt (54).

7. The automatic steel bar straightening, rust removal and cutting device according to claim 6 is characterized by: An electric telescopic rod (57) is fixedly mounted on the bottom of the mounting plate (52); an output end of the electric telescopic rod (57) is fixedly connected to a limiting block (571); a third mounting block (58) is fixedly mounted on one side of the first mounting frame (3); a spring (581) is fixedly connected to the top of the third mounting block (58); one end of the spring (581) is fixedly connected to a limiting plate (582); and one end of the limiting plate (582) is rotatably mounted on one side of the first mounting frame (3).

8. The automatic steel bar straightening, rust removal and cutting device according to claim 7 is characterized by: A fifth mounting block (61) is fixedly connected to one side of the two fourth mounting blocks (6); the second mounting frame (62) is fixedly mounted on the top of the fifth mounting block (61); a knife groove (611) is provided on the top of the fifth mounting block (61); a second cylinder (63) is fixedly mounted on the top of the second mounting frame (62); an output end of the second cylinder (63) passes through the second mounting frame (62) and is fixedly mounted on the top of the cutter (64).

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