Adjustable swing arm and steel bar conveying method using the adjustable swing arm

Abstract

The present invention relates to an adjustable swing arm and a method for conveying steel bars using the adjustable swing arm. The present invention includes an adjustment component, the adjustment component includes an adjustment drive, a wheel axle, an adjustment block and an adjustment arm, the adjustment drive is connected to the adjustment block, the output end of the adjustment drive is connected to the wheel axle, the adjustment arm is connected to an eccentric wheel, the eccentric wheel is connected to the wheel axle and is eccentrically arranged with respect to the axis of the wheel axle, and the adjustment arm is slidably connected to the adjustment block; a drive arm, the drive arm is connected to the adjustment block; a drive component, the drive component can swing the drive arm along the installation plane of the mounting frame; a reciprocating conveying component, the reciprocating conveying component includes a conveying arm, the conveying arm is slidably connected to the mounting frame; a connecting arm, the two ends of the connecting arm are respectively connected to the adjustment arm and the conveying arm. By setting the adjustment component, the present invention enables the wheel axle to drive the eccentric wheel to rotate to adjust the length of the adjustment arm, and can accurately adjust the reciprocating spacing of the steel bar conveying, with strong versatility and high efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of steel bar conveying devices, and in particular to an adjustable swing arm and a steel bar conveying method using the adjustable swing arm. Background Art

[0002] In modern rebar processing workshops, when bars and rebar are needed as raw materials, they need to be transported. This is typically accomplished using a reciprocating swing arm. However, existing conveying methods have the following problems: The swing arm's length cannot be adjusted to adjust the reciprocating spacing of the rebar, resulting in poor versatility. Alternatively, manual adjustment of the swing arm is required to achieve the desired reciprocating spacing, leading to low efficiency. Summary of the Invention

[0003] To this end, the technical problem to be solved by the present invention is to overcome the problem in the prior art that the length of the swing arm cannot be changed to adjust the reciprocating spacing of the steel bar conveying and the swing arm needs to be manually adjusted to make the reciprocating spacing of the steel bar conveying reach the required size.

[0004] In order to solve the above technical problems, the present invention provides an adjustable swing arm, including a mounting frame, on which is provided:

[0005] An adjustment assembly, the adjustment assembly comprising an adjustment drive, a wheel axle, an adjustment block, and an adjustment arm, the adjustment drive being connected to the adjustment block, the output end of the adjustment drive being connected to the wheel axle, the adjustment arm being connected to an eccentric wheel, the eccentric wheel being connected to the wheel axle and being eccentrically arranged with respect to the axis of the wheel axle, the adjustment arm being slidably connected to the adjustment block, and the adjustment block being rotatably connected to the mounting plane of the mounting frame;

[0006] A driving arm connected to the adjustment block;

[0007] A drive assembly capable of driving the drive arm to swing back and forth along the mounting plane of the mounting frame;

[0008] A reciprocating conveying assembly, the reciprocating conveying assembly comprising a conveying arm, the conveying arm being slidably connected to a mounting frame;

[0009] The connecting arm has two ends connected to the adjusting arm and the conveying arm respectively.

[0010] In one embodiment of the present invention, the adjustment block includes an adjustment block cover and an adjustment block seat connected to the adjustment block cover, an inner cavity with one end open for accommodating the adjustment arm is formed between the adjustment block cover and the adjustment block seat, and the adjustment drive member is connected to the adjustment block cover.

[0011] In one embodiment of the present invention, the adjusting arm is provided with a mounting groove, a mounting block is embedded in the mounting groove, and the eccentric wheel is embedded in the mounting block.

[0012] In one embodiment of the present invention, one end of the wheel axle is connected to a first flange, the first flange is connected to a second flange, the eccentric wheel is connected between the first flange and the second flange, one end of the driving arm is connected to a rotating shaft rotatably connected to the mounting plane of the mounting frame, and a connecting flange is provided between the rotating shaft and the two sides of the mounting plane, the wheel axle, the first flange, the second flange and the rotating shaft are coaxially arranged, the adjusting block seat is provided with a connecting hole and a flange groove coaxially arranged with the connecting hole, the disc body of the second flange is installed in the flange groove, the rotating shaft passes through the connecting hole and is connected to the connecting hole by a flat key.

[0013] In one embodiment of the present invention, the reciprocating conveying assembly also includes a guide block and two slide rails parallel to the mounting plane of the mounting frame. The side end of the conveying arm is connected to the guide block. The guide block is provided with a guide wheel group. The guide wheel group includes four guide wheels distributed in a cross shape and rotatably connected to the guide block. The slide rail includes a guide edge. The guide edges of the two guide rails are arranged opposite to each other, and each guide edge is respectively against two guide wheels in a group of guide wheel groups.

[0014] In one embodiment of the present invention, the reciprocating conveying assembly also includes a steel bar compression block, a compression driving member, and a compression rod connected to the driving end of the compression driving member, the compression driving member is connected to the top of the conveying arm, the conveying arm includes a connecting groove, and a plurality of compression grooves arranged on the conveying arm are radiated along the connecting groove, and the plurality of compression grooves are all connected to the side wall of the conveying arm, the steel bar compression block is movably connected in the connecting groove, and a first compression block arranged in the compression groove is distributed on the steel bar compression block, the compression rod can be extended and retracted along one of the compression grooves, and a top block is provided at the position where the remaining compression grooves are connected to the side wall of the conveying arm, and a second compression block is connected to the top block and the compression rod, and a slot for the steel bar to pass through is formed between the first compression block and the second compression block.

[0015] In one embodiment of the present invention, there are three compression grooves, which are distributed at 120°. The connecting groove is a circular groove, and the steel bar compression block is a disc movably arranged in the circular groove.

[0016] In one embodiment of the present invention, anti-slip grooves are provided on the surface of the first pressing block opposite to the second pressing block, and on the surface of the second pressing block opposite to the first pressing block.

[0017] In one embodiment of the present invention, the drive assembly includes a rocker arm, a driving gear, a driving gear, a first driven gear, a second driven gear and a third driven gear, a synchronous belt and a drive motor, the output end of the drive motor is connected to the drive gear through a synchronous belt, the drive gear is connected to a drive shaft, the driving gear is connected to the drive shaft and meshes with the first driven gear, the third driven gear is meshed with the first driven gear and the second driven gear respectively, one end of the rocker arm is rotatably connected to the driving arm, and the other end of the rocker arm is rotatably connected to the third driven gear and deviates from the center of the third driven gear.

[0018] The present invention also provides a method for conveying steel bars using the adjustable swing arm, comprising the following steps:

[0019] The steel bar is passed through the notch formed between the first pressing block and the second pressing block, and the pressing rod is driven by the pressing driving member to clamp the steel bar through the second pressing block on the pressing rod and the first pressing block in the corresponding pressing groove. The movement of the steel bar pressing block in the connecting groove causes the first pressing blocks in the remaining pressing grooves to move toward the second pressing blocks in the corresponding pressing grooves, thereby clamping the steel bars in each notch;

[0020] The driving motor drives the driving gear to rotate through the synchronous belt, and the rotation of the driving gear drives the driving gear, the first driven gear, the second driven gear and the third driven gear to rotate. The rotation of the third driven gear causes the rocker arm to drive the driving arm to perform reciprocating rocking motion, and the driving arm drives the adjusting block, the adjusting arm and the connecting arm to perform reciprocating rocking motion. The rocking reciprocating motion of the connecting arm causes the conveying arm to reciprocate along the slide rail.

[0021] The adjusting drive member works by driving the eccentric wheel to rotate so that the adjusting arm slides along the adjusting block, and the extension amount of the adjusting arm along the adjusting block is adjusted according to the reciprocating distance of the conveying arm required to convey the steel bars.

[0022] The above technical solution of the present invention has the following advantages over the prior art:

[0023] The adjustable swing arm and the steel bar conveying method using the adjustable swing arm described in the present invention, by setting an adjustment component, enable the wheel axle to drive the eccentric wheel to rotate to adjust the length of the adjustment arm, and can accurately adjust the reciprocating spacing of the steel bar conveying, with strong versatility and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings, wherein

[0025] Figure 1 It is a schematic diagram of the overall structure of the adjustable swing arm of the present invention.

[0026] Figure 2 It is a schematic diagram of the drive assembly structure of the present invention.

[0027] Figure 3 It is a schematic structural diagram of the regulating component of the present invention.

[0028] Figure 4 It is a schematic structural diagram of the coordination between the regulating block and the regulating arm of the present invention.

[0029] Figure 5 It is a schematic diagram of the shaft connection of the present invention.

[0030] Figure 6 It is a schematic diagram of the internal structure of the regulating component of the present invention.

[0031] Figure 7 It is a structural schematic diagram of the regulating block seat of the present invention.

[0032] Figure 8 It is a schematic structural diagram of the reciprocating conveying assembly of the present invention.

[0033] Figure 9 It is a schematic diagram of the three-dimensional structure of the conveying arm of the present invention.

[0034] Figure 10 It is a schematic diagram of the structure of the conveying arm of the present invention.

[0035] Description of the accompanying drawings: 100, mounting frame; 110, connecting flange;

[0036] 1. Adjustment assembly; 11. Adjustment drive member; 12. Axle; 13. Adjustment block; 131. Adjustment block cover; 132. Adjustment block seat; 1321. Connecting hole; 1322. Flange slot; 14. Adjustment arm; 141. Mounting slot; 142. Mounting block; 15. Eccentric wheel; 16. First flange; 17. Second flange; 18. Rotating shaft; 19. Flat key;

[0037] 2. Driving arm;

[0038] 3. Drive assembly; 31. Rocker arm; 32. Drive gear; 33. Driving gear; 34. First driven gear; 35. Second driven gear; 36. Third driven gear; 37. Synchronous belt; 38. Drive motor;

[0039] 4. Reciprocating conveyor assembly; 400. Notch; 41. Conveying arm; 411. Connecting groove; 412. Pressing groove; 413. Top block; 42. Guide block; 43. Slide rail; 431. Guide edge; 44. Guide wheel assembly; 441. Guide wheel; 45. Rebar pressing block; 46. Pressing drive member; 47. Pressing rod; 48. First pressing block; 481. Anti-slip groove; 49. Second pressing block;

[0040] 5. Connecting arm. DETAILED DESCRIPTION

[0041] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0042] Reference Figures 1 to 10 As shown, an adjustable swing arm of the present invention includes a mounting frame 100, on which the mounting frame 100 is provided:

[0043] An adjustment assembly 1 includes an adjustment drive 11, an axle 12, an adjustment block 13, and an adjustment arm 14. The adjustment drive 11 is connected to the adjustment block 13, the output end of the adjustment drive 11 is connected to the axle 12, and the adjustment arm 14 is connected to an eccentric wheel 15. The eccentric wheel 15 is connected to the axle 12 and is eccentrically arranged with respect to the axis of the axle 12. The adjustment arm 14 is slidably connected to the adjustment block 13, and the adjustment block 13 is rotatably connected to the mounting plane of the mounting frame 100.

[0044] A driving arm 2 connected to an adjusting block 13;

[0045] A driving assembly 3, wherein the driving assembly 3 is capable of driving the driving arm 2 to swing back and forth along the mounting plane of the mounting frame 100;

[0046] A reciprocating conveying assembly 4, the reciprocating conveying assembly 4 comprising a conveying arm 41, the conveying arm 41 being slidably connected to the mounting frame 100;

[0047] The connecting arm 5 has two ends connected to the adjusting arm 14 and the conveying arm 41 respectively.

[0048] Specifically, the adjustment block 13 includes an adjustment block cover 131 and an adjustment block seat 132 connected to the adjustment block cover 131. An inner cavity with one end open for accommodating the adjustment arm 14 is formed between the adjustment block cover 131 and the adjustment block seat 132, and the adjustment drive member 11 is connected to the adjustment block cover 131.

[0049] Specifically, the adjusting arm 14 is provided with a mounting groove 141 , a mounting block 142 is embedded in the mounting groove 141 , and the eccentric wheel 15 is embedded in the mounting block 142 .

[0050] 1. Specifically, one end of the wheel axle 12 is connected to a first flange 16, which is connected to a second flange 17. The eccentric wheel 15 is connected between the first flange 16 and the second flange 17. One end of the drive arm 2 is connected to a rotating shaft 18 that is rotatably connected to the mounting plane of the mounting frame 100. Connecting flanges 110 are provided between the rotating shaft 18 and both sides of the mounting plane. The wheel axle 12, the first flange 16, the second flange 17, and the rotating shaft 18 are coaxially arranged. The adjustment block seat 132 is provided with a connecting hole 1321 and a flange groove 1322 coaxially arranged with the connecting hole 1321. The disc body of the second flange 17 is installed in the flange groove 1322. The rotating shaft 18 passes through the connecting hole 1321 and is connected to the connecting hole 1321 via a flat key 19. The rotating shaft 18 is also linked to the drive arm 2 via a key. Through the above arrangement, when the driving arm 2 performs reciprocating swinging motion, the driving arm 2 can drive the adjusting block 13, the adjusting arm 14 and the connecting arm 5 to perform reciprocating swinging motion, and the swinging reciprocating motion of the connecting arm 5 causes the conveying arm 41 to perform reciprocating motion.

[0051] In this embodiment, the adjustment drive member 11 includes a reduction motor, a servo motor, etc.

[0052] Specifically, the reciprocating conveying assembly 4 also includes a guide block 42 and two slide rails 43 arranged parallel to the mounting plane of the mounting frame 100. The side end of the conveying arm 41 is connected to the guide block 42. The guide block 42 is provided with a guide wheel assembly 44. The guide wheel assembly 44 includes four guide wheels 441 arranged in a cross shape and rotatably connected to the guide block 42. The slide rail 43 includes guide edges 431. The guide edges 431 of the two guide rails are respectively arranged relative to each other, and each guide edge 431 abuts against two guide wheels 441 in a group of guide wheel assemblies 44. The cross-section of the guide edges 431 is triangular. This arrangement improves the stability of the reciprocating motion of the conveying arm 41 on the slide rail 43.

[0053] Specifically, the reciprocating conveying assembly 4 also includes a steel bar pressing block 45, a pressing drive member 46, and a pressing rod 47 connected to the driving end of the pressing drive member 46, the pressing drive member 46 is connected to the top of the conveying arm 41, the conveying arm 41 includes a connecting groove 411, and a plurality of pressing grooves 412 provided on the conveying arm 41 are radiated along the connecting groove 411, and the plurality of pressing grooves 412 are all connected to the side wall of the conveying arm 41, the steel bar pressing block 45 is movably connected to the connecting groove 411, and a first pressing block 48 provided in the pressing groove 412 is distributed on the steel bar pressing block 45, the pressing rod 47 can be extended and retracted along one of the pressing grooves 412, and a top block 413 is provided at the position where the remaining pressing grooves 412 are connected to the side wall of the conveying arm 41, the top block 413 and the pressing rod 47 are both connected to a second pressing block 49, and a notch 400 for the steel bar to pass through is provided between the first pressing block 48 and the second pressing block 49. In this embodiment, the compression driving member 46 is an oil cylinder. In other embodiments, it can also be an air cylinder, etc. Through the above configuration, the steel bars in multiple slots 400 can be compressed and loosened simultaneously by setting a compression driving member 46.

[0054] Specifically, there are three compression grooves 412 , which are distributed at 120°. The connecting groove 411 is a circular groove, and the steel bar compression block 45 is a disc movably arranged in the circular groove.

[0055] Specifically, the surface of the first pressing block 48 opposite to the second pressing block 49 and the surface of the second pressing block 49 opposite to the first pressing block 48 are both provided with anti-slip grooves 481 , so that the steel bar is firmly clamped between the first pressing block 48 and the second pressing block 49 .

[0056] Specifically, the drive assembly 3 includes a rocker arm 31, a driving gear 32, a driving gear 33, a first driven gear 34, a second driven gear 35 and a third driven gear 36, a synchronous belt 37 and a drive motor 38. The output end of the drive motor 38 is connected to the drive gear 32 through a synchronous belt 37. The drive gear 32 is connected to a driving shaft. The driving gear 33 is connected to the driving shaft and meshes with the first driven gear 34. The third driven gear 36 meshes with the first driven gear 34 and the second driven gear 35 respectively. One end of the rocker arm 31 is rotatably connected to the driving arm 2, and the other end of the rocker arm 31 is rotatably connected to the third driven gear 36 and deviates from the center of the third driven gear 36. The driving motor 38 includes a servo motor, and the first driven gear 34, the second driven gear 35 and the third driven gear 36 are respectively connected to the mounting plane of the mounting frame 100. Through the above arrangement, the driving motor 38 is driven to rotate the driving gear 32 through the synchronous belt 37, and the driving gear 33, the first driven gear 34, the second driven gear 35 and the third driven gear 36 are driven to rotate through the rotation of the driving gear 32. The rotation of the third driven gear 36 causes the rocker arm 31 to drive the driving arm 2 to perform reciprocating rocking motion.

[0057] The present invention uses the steel bar conveying method of the adjustable swing arm, comprising the following steps:

[0058] The steel bar is passed through the notch 400 between the first pressing block 48 and the second pressing block 49. The pressing rod 47 is driven by the pressing driving member 46 to clamp the steel bar by the second pressing block 49 on the pressing rod 47 and the first pressing block 48 in the corresponding pressing groove 412. The movement of the steel bar pressing block 45 in the connecting groove 411 causes the first pressing blocks 48 in the remaining pressing grooves 412 to move toward the second pressing blocks 49 in the corresponding pressing grooves 412, thereby clamping the steel bars in each notch 400.

[0059] The drive motor 38 drives the drive gear 32 to rotate via the synchronous belt 37. The rotation of the drive gear 32 drives the driving gear 33, the first driven gear 34, the second driven gear 35, and the third driven gear 36 to rotate. The rotation of the third driven gear 36 causes the rocker arm 31 to drive the drive arm 2 to perform a reciprocating rocking motion. The drive arm 2 drives the adjustment block 13, the adjustment arm 14, and the connecting arm 5 to perform a reciprocating rocking motion. The reciprocating rocking motion of the connecting arm 5 causes the conveying arm 41 to reciprocate along the slide rail 43.

[0060] The adjusting drive member 11 works by driving the eccentric wheel 15 to rotate so that the adjusting arm 14 slides along the adjusting block 13 , and adjusts the extension amount of the adjusting arm 14 along the adjusting block 13 according to the reciprocating distance of the steel bars required to be transported by the transport arm 41 .

[0061] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An adjustable swing arm, comprising a mounting frame (100), characterized in that: The mounting frame (100) is provided with: An adjusting assembly (1), the adjusting assembly (1) comprising an adjusting drive member (11), a wheel shaft (12), an adjusting block (13) and an adjusting arm (14), the adjusting drive member (11) being connected to the adjusting block (13), an output end of the adjusting drive member (11) being connected to the wheel shaft (12), the adjusting arm (14) being connected to an eccentric wheel (15), the eccentric wheel (15) being connected to the wheel shaft (12) and being eccentrically arranged with respect to the axis of the wheel shaft (12), the adjusting arm (14) being slidably connected to the adjusting block (13), and the adjusting block (13) being rotatably connected to a mounting plane of a mounting frame (100); A driving arm (2), the driving arm (2) being connected to the adjustment block (13); A drive assembly (3), the drive assembly (3) being capable of driving the drive arm (2) to swing back and forth along the mounting plane of the mounting frame (100); A reciprocating conveying assembly (4), the reciprocating conveying assembly (4) comprising a conveying arm (41), the conveying arm (41) being slidably connected to the mounting frame (100); A connecting arm (5), wherein both ends of the connecting arm (5) are respectively connected to the adjusting arm (14) and the conveying arm (41); The adjusting drive member (11) works to drive the eccentric wheel (15) to rotate so that the adjusting arm (14) slides along the adjusting block (13), and the extension amount of the adjusting arm (14) along the adjusting block (13) is adjusted according to the reciprocating distance of the steel bars required to be transported by the transporting arm (41); The regulating block (13) comprises a regulating block cover plate (131) and a regulating block seat (132) connected to the regulating block cover plate (131); an inner cavity with an open end for accommodating the regulating arm (14) is formed between the regulating block cover plate (131) and the regulating block seat (132); and the regulating drive member (11) is connected to the regulating block cover plate (131); The regulating arm (14) is provided with a mounting groove (141), a mounting block (142) is embedded in the mounting groove (141), and the eccentric wheel (15) is embedded in the mounting block (142).

2. The adjustable swing arm according to claim 1, characterized in that: One end of the wheel shaft (12) is connected to a first flange (16), and the first flange (16) is connected to a second flange (17). The eccentric wheel (15) is connected between the first flange (16) and the second flange (17). One end of the driving arm (2) is connected to a rotating shaft (18) rotatably connected to the mounting plane of the mounting frame (100). Connecting flanges (110) are provided between the rotating shaft (18) and both sides of the mounting plane. The wheel shaft (12), the first flange (16), the second flange (17) and the rotating shaft (18) are coaxially arranged. The adjusting block seat (132) is provided with a connecting hole (1321) and a flange groove (1322) coaxially arranged with the connecting hole (1321). The disk body of the second flange (17) is installed in the flange groove (1322). The rotating shaft (18) passes through the connecting hole (1321) and is connected to the connecting hole (1321) via a flat key (19).

3. The adjustable swing arm according to claim 2, characterized in that: The reciprocating conveying assembly (4) further includes a guide block (42) and two slide rails (43) arranged parallel to the mounting plane of the mounting frame (100). The side end of the conveying arm (41) is connected to the guide block (42). The guide block (42) is provided with a guide wheel group (44). The guide wheel group (44) includes four guide wheels (441) distributed in a cross shape and rotatably connected to the guide block (42). The slide rail (43) includes a guide edge (431). The guide edges (431) of the two guide rails are arranged relative to each other, and each guide edge (431) is respectively abutted against two guide wheels (441) in a group of guide wheel groups (44).

4. The adjustable swing arm according to claim 3, characterized in that: The reciprocating conveying assembly (4) further includes a steel bar pressing block (45), a pressing drive (46), and a pressing rod (47) connected to the driving end of the pressing drive (46), wherein the pressing drive (46) is connected to the top of the conveying arm (41), and the conveying arm (41) includes a connecting groove (411), and a plurality of pressing grooves (412) are radially distributed along the connecting groove (411) and are provided on the conveying arm (41), and the plurality of pressing grooves (412) are all connected to the side wall of the conveying arm (41), and the steel bar pressing block (45) is movably connected to the connecting groove. In the groove (411), the steel bar pressing block (45) is provided with a first pressing block (48) arranged in the pressing groove (412), the pressing rod (47) can be extended and retracted along one of the pressing grooves (412), and the positions where the other pressing grooves (412) are connected to the side walls of the conveying arm (41) are provided with a top block (413), and the top block (413) and the pressing rod (47) are both connected to a second pressing block (49), and a notch (400) for the steel bar to pass through is provided between the first pressing block (48) and the second pressing block (49).

5. The adjustable swing arm according to claim 4, characterized in that: The number of the compression grooves (412) is three, and the three compression grooves (412) are distributed at 120 degrees. The connecting groove (411) is a circular groove, and the steel bar compression block (45) is a disc movably arranged in the circular groove.

6. The adjustable swing arm according to claim 5, characterized in that: The surface of the first pressing block (48) relative to the second pressing block (49), and the surface of the second pressing block (49) relative to the first pressing block (48) are both provided with anti-slip grooves (481).

7. The adjustable swing arm according to claim 6, characterized in that: The driving assembly (3) comprises a rocker arm (31), a driving gear (32), a driving gear (33), a first driven gear (34), a second driven gear (35), a third driven gear (36), a synchronous belt (37), and a driving motor (38). The output end of the driving motor (38) is connected to the driving gear (32) through the synchronous belt (37). The driving gear (32) is connected to a driving shaft. The driving gear (33) is connected to the driving shaft and meshes with the first driven gear (34). The third driven gear (36) meshes with the first driven gear (34) and the second driven gear (35), respectively. One end of the rocker arm (31) is rotatably connected to the driving arm (2). The other end of the rocker arm (31) is rotatably connected to the third driven gear (36) and deviates from the center of the third driven gear (36).

8. A method for conveying steel bars using the adjustable swing arm according to claim 7, characterized in that: The steps include: The steel bar is passed through the notch (400) between the first pressing block (48) and the second pressing block (49), and the pressing rod (47) is driven by the pressing driving member (46) to clamp the steel bar by the second pressing block (49) on the pressing rod (47) and the first pressing block (48) in the corresponding pressing groove (412). The first pressing blocks (48) in the remaining pressing grooves (412) are moved toward the second pressing blocks (49) in the corresponding pressing grooves (412) by the movement of the steel bar pressing block (45) in the connecting groove (411), and the steel bars in each notch (400) are clamped. The driving motor (38) drives the driving gear (32) to rotate through the synchronous belt (37), and the driving gear (32) drives the driving gear (33), the first driven gear (34), the second driven gear (35) and the third driven gear (36) to rotate. The third driven gear (36) rotates, so that the rocker arm (31) drives the driving arm (2) to perform a reciprocating rocking motion, and the driving arm (2) drives the adjusting block (13), the adjusting arm (14) and the connecting arm (5) to perform a reciprocating rocking motion. The rocking reciprocating motion of the connecting arm (5) causes the conveying arm (41) to reciprocate along the slide rail (43). The adjusting drive member (11) works to drive the eccentric wheel (15) to rotate so that the adjusting arm (14) slides along the adjusting block (13), and the extension amount of the adjusting arm (14) along the adjusting block (13) is adjusted according to the reciprocating distance of the steel bars required to be transported by the transporting arm (41).

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