Clamping mechanism and steel bar bender

Abstract

The invention belongs to the technical field of steel bar machining, and discloses a clamping mechanism and a steel bar bender. The clamping mechanism comprises a mounting base, a fixed clamping block, a movable clamping block and a clamping driving assembly; the fixed clamping block is fixed on the mounting seat; the movable clamping block is arranged on the mounting base in a sliding mode in the first direction, and a clamping space is formed between the movable clamping block and the fixed clamping block; the clamping driving assembly comprises a swing arm, a supporting rod and a clamping driving piece, the supporting rod is hinged to the mounting base, the swing arm is hinged to the supporting rod, the first end of the swing arm is hinged to the movable clamping block, the second end of the swing arm is hinged to the clamping driving piece, the clamping driving piece is hinged to the mounting base, and the swing arm is a labor-saving lever. And larger clamping force can be provided for the movable clamping block, so that a workpiece in a clamping space is effectively clamped.

Description

Technical Field

[0001] The present invention relates to the technical field of steel bar processing, and in particular to a clamping mechanism and a steel bar bending machine. Background Art

[0002] The steel bar processing process often involves bending the two ends of the steel bars cut into a certain length. If a manual assisted bending machine is used to bend the steel bars, workers need to take the steel bars to the bending machine for manual assisted positioning. Due to the large bending force and the elasticity of the steel bars, the steel bars can easily fall off the bending machine, which not only affects the bending efficiency but also easily causes work injuries.

[0003] Therefore, in order to fix the steel bars, a clamping mechanism is usually provided on the bending machine. The clamping mechanism includes a fixed clamping block and a movable clamping block connected to the driving cylinder. The movable clamping block moves closer to or away from the fixed clamping block under the action of the driving cylinder to clamp or release the steel bars. However, the clamping force applied by the driving cylinder to the steel bars is limited. When the bending force is large, there is still a risk of the steel bars falling off. Summary of the invention

[0004] One of the purposes of the present invention is to provide a clamping mechanism to solve the problem of different clamping strengths of steel bars.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] In the first aspect, an embodiment of the present invention provides a clamping mechanism, comprising a mounting seat, a fixed clamping block, a movable clamping block and a clamping drive assembly; the fixed clamping block is fixed to the mounting seat; the movable clamping block is slidably arranged on the mounting seat along a first direction, and a clamping space is formed between the movable clamping block and the fixed clamping block; the clamping drive assembly comprises a swing arm, a support rod and a clamping drive member, the support rod is hinged to the mounting seat through a first hinge axis, the swing arm is hinged to the support rod through a second hinge axis, and the first end of the swing arm is hinged to the movable clamping block through a third hinge axis, the second end of the swing arm is hinged to the clamping drive member through a fourth hinge axis, the clamping drive member is hinged to the mounting seat, and the distance between the first hinge axis and the third hinge axis is smaller than the distance between the first hinge axis and the fourth hinge axis.

[0007] In one embodiment, the movable clamping block includes a first clamping portion, a second clamping portion and an elastic member, the second clamping portion is arranged on a side of the first clamping portion away from the fixed clamping block and is movably connected to the first clamping portion, and the elastic member is arranged between the first clamping portion and the second clamping portion.

[0008] In one embodiment, the first clamping portion is hinged to the second clamping portion via a fifth hinge axis.

[0009] In one embodiment, limiting grooves are provided on both sides of the first clamping portion along the second direction, and the limiting grooves have a notch facing one side of the second clamping portion. The second clamping portion includes a connecting block, and the connecting block is rotatably arranged in the limiting groove through the fifth hinge shaft. The first clamping portion and / or the second clamping portion are provided with an installation groove, and the elastic member is an elastic gasket, which is limited to the installation groove, and the second direction is perpendicular to the first direction.

[0010] In one embodiment, the clamping mechanism also includes a lifting assembly, which includes a lifting drive and a lifting member, and the lifting drive is configured to drive the lifting member to reciprocate along a third direction to eject the workpiece in the clamping space out of the clamping space, and the third direction is perpendicular to the first direction.

[0011] In one embodiment, the first direction is arranged to be inclined with respect to a horizontal plane, the mounting seat has a top plate extending along the first direction, and the fixed clamping block and the movable clamping block are both arranged on the top plate.

[0012] In one embodiment, the movable clamping block is located on a side of the top plate that is relatively higher than the fixed clamping block along the first direction, and an inclined third guide surface is provided on the side of the fixed clamping block that is away from the movable clamping block. The third guide surface extends from a side close to the movable clamping block to abut against the top plate.

[0013] In one embodiment, the clamping mechanism also includes a walking assembly, which includes a walking drive, a first guide wheel and a second guide wheel. The walking drive is configured to drive the clamping mechanism to walk on a guide rail. Two groups of the first guide wheels are arranged at intervals up and down, and two groups of the second guide wheels are arranged at intervals perpendicular to the extension direction of the guide rail. Both the first guide wheel and the second guide wheel are in rolling contact with the guide rail.

[0014] In one embodiment, the clamping drive member includes two fixedly connected thin cylinders, the output shafts of the two thin cylinders are on the same straight line, and the output shaft of one of the thin cylinders is hinged to the mounting seat, and the output shaft of the other thin cylinder is hinged to the swing arm.

[0015] On the other hand, an embodiment of the present invention provides a steel bar bending machine, comprising a bending mechanism and the clamping mechanism described in any of the above embodiments, wherein the clamping mechanism is configured to clamp the steel bar when the bending mechanism bends the steel bar.

[0016] Beneficial effects of the present invention:

[0017] The clamping mechanism in the embodiment of the present invention utilizes a swing arm to connect the movable clamping block. The swing arm is equivalent to a force-saving lever. Under the premise that the force applied by the clamping drive is the same, the workpiece can be effectively clamped to prevent the workpiece from escaping from the clamping space. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the three-dimensional structure of the clamping mechanism in an embodiment of the present invention;

[0019] Figure 2 is a front view of a clamping mechanism in an embodiment of the present invention;

[0020] Figure 3 is a side view of a clamping mechanism in an embodiment of the present invention;

[0021] Figure 4 yes Figure 3 Sectional view along AA direction;

[0022] Figure 5 is a schematic structural diagram of a movable clamping block in an embodiment of the present invention;

[0023] Figure 6 It is a cross-sectional view of the movable clamping block in the embodiment of the present invention.

[0024] In the figure:

[0025] 1. Mounting seat; 11. First support plate; 12. Second support plate; 13. Top plate; 131. Avoidance hole; 132. Second guide member; 2. Fixed clamping block; 21. First guide surface; 23. Third guide surface; 3. Movable clamping block; 31. First clamping part; 311. Limiting groove; 312. Mounting groove; 313. Second guide surface; 32. Second clamping part; 321. Connecting block; 33. Elastic member; 34. First guide member; 4. Clamping drive assembly; 41. Clamping drive member; 42. Swing arm; 43. Support rod; 5. Lifting assembly; 51. Lifting drive member; 52. Lifting member; 6. Traveling assembly; 61. Traveling drive member; 62. Traveling support seat; 63. Gear; 64. First guide wheel; 65. Second guide wheel. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0027] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0030] refer to Figure 1-Figure 6 As shown, in an embodiment of the present invention, a clamping mechanism is proposed, comprising a mounting seat 1, a fixed clamping block 2, a movable clamping block 3 and a clamping drive assembly 4, wherein the fixed clamping block 2 is fixed on the mounting seat 1, the movable clamping block 3 is slidably arranged on the mounting seat 1 along a first direction, a clamping space is formed between the sliding clamping block and the fixed clamping block 2, the clamping drive assembly 4 is connected to the movable clamping block 3, and the clamping drive assembly 4 is configured to drive the movable clamping block 3 along the first direction ( Figure 1 and Figure 2The clamping drive assembly 4 can move closer to or away from the fixed clamping block 2 in the X direction and the reverse direction. In order to have a greater clamping force to achieve effective clamping of the workpiece, the clamping drive assembly 4 includes a swing arm 42, a support rod 43 and a clamping drive member 41. The support rod 43 is hinged to the mounting seat 1 through a first hinge axis, the swing arm 42 is hinged to the support rod 43 through a second hinge axis, and the first end of the swing arm 42 is hinged to the movable clamping block 3 through a third hinge axis, the second end of the swing arm 42 is hinged to the clamping drive member 41 through a fourth hinge axis, the clamping drive member 41 is hinged to the mounting seat 1, and the clamping drive member 41 is configured to drive the swing arm 42 to swing around the second hinge axis. It should be emphasized that the distance between the first hinge axis and the third hinge axis is smaller than the distance between the first hinge axis and the fourth hinge axis.

[0031] In the above-mentioned clamping mechanism, since the distance between the first hinge axis and the third hinge axis is smaller than the distance between the first hinge axis and the fourth hinge axis, the swing arm 42 is equivalent to a force-saving lever. Under the premise that the force applied by the clamping drive 41 is the same, the force transmitted to the movable clamping block 3 through the swing arm 42 is greater than the force directly applied to the movable clamping block 3, thereby being able to effectively clamp the workpiece and prevent the workpiece from escaping from the clamping space.

[0032] refer to Figure 2 and Figure 4 As shown, the mounting base 1 includes a first support plate 11 and a second support plate 12 which are arranged in parallel and vertically, and also includes a top plate 13 which is fixedly connected between the first support plate 11 and the second support plate 12. The first support plate 11, the second support plate 12 and the top plate 13 cooperate to form an installation space, and the clamping drive assembly 4 is arranged in the installation space. An avoidance hole 131 is opened on the top plate 13, and the movable clamping block 3 penetrates into the installation space from above the top plate 13 through the avoidance hole 131 and is connected to the swing arm 42.

[0033] In order to ensure that the movable clamping block 3 moves stably when moving along the first direction, a first guide member 34 is provided on the movable clamping block 3, and a second guide member 132 is provided at the bottom of the top plate 13. The first guide member 34 and the second guide member 132 are slidably matched, that is, the movable clamping block 3 and the top plate 13 are slidably connected by the mutual cooperation of the first guide member 34 and the second guide member 132.

[0034] Specifically, the first guide member 34 is configured as a sliding shaft, and the second guide member 132 is a guide block. A through hole is provided on the guide block along the first direction, and the sliding shaft passes through the through hole to slide with the sliding block, and the sliding block provides guidance for the movement of the sliding shaft. More specifically, two sliding blocks are provided at intervals along the first direction to further improve the guidance accuracy.

[0035] In addition, in order to reduce the difficulty of the workpiece entering the clamping space, the top surfaces of the fixed clamping block 2 and the movable clamping block 3 are respectively provided with an inclined first guide surface 21 and a second guide surface 313. The first guide surface 21 and the second guide surface 313 gradually incline upward along a first direction from a side approaching each other to a side away from each other, thereby forming a conical guide opening, and the workpiece enters the clamping space after being guided by the guide opening.

[0036] In one embodiment, the movable clamping block 3 further comprises a first clamping portion 31, a second clamping portion 32 and an elastic member 33, the second guide surface 313 is arranged on the first clamping portion 31, the second clamping portion 32 is arranged on the side of the first clamping portion 31 away from the fixed clamping block 2 and is movably connected to the first clamping portion 31, and the elastic member 33 is arranged between the first clamping portion 31 and the second clamping portion 32, so that the first clamping portion 31 has a tendency to move away from the second clamping portion 32 along the first direction. When the movable clamping block 3 cooperates with the fixed clamping block 2 to clamp the workpiece, the first clamping portion 31 first abuts against the workpiece and moves toward the second clamping portion 32, and the elastic member 33 provides a buffer for the first clamping portion 31 to avoid damage to the workpiece. At the same time, the structural arrangement of the movable clamping block 3 can clamp workpieces of different specifications when the clamping drive member 41 has the same stroke, and has a wide range of applications.

[0037] In one embodiment, the clamping drive member 41 is a cylinder. Specifically, the clamping drive member 41 includes two symmetrically arranged and fixedly connected thin cylinders, the output shafts of the two thin cylinders are located on the same straight line and are arranged opposite to each other, the output shaft of one thin cylinder is hinged to the mounting seat 1, and the output shaft of the other thin cylinder is hinged to the second end of the swing arm 42.

[0038] In one embodiment, reference Figure 5 As shown, the first clamping part 31 is hinged to the second clamping part 32 through a fifth hinge axis. As for the elastic member 33, it can adopt an elastic structure including but not limited to an elastic gasket, a spring, etc. Considering the operating frequency of the clamping mechanism, the elastic member 33 in this embodiment adopts an elastic gasket to make the movable clamping block 3 have a longer service life.

[0039] More specifically, the first clamping portion 31 is arranged along the second direction ( Figure 1 and Figure 2 Limiting grooves 311 are provided on both sides (in the Y direction and reverse direction), and the limiting grooves 311 have a notch facing the second clamping part 32. The second clamping part 32 includes a connecting block 321, and the connecting block 321 is rotatably arranged in the limiting groove 311 through the fifth hinge axis. The arrangement of the limiting grooves 311 and the connecting block 321 makes the structure of the entire movable clamping block 3 more compact and saves space.

[0040] Continue to refer Figure 5As shown, a mounting groove 312 is further provided on one side of the first clamping portion 31 facing the second clamping portion 32. The elastic gasket is limited in the mounting groove 312 and protrudes from the notch of the mounting groove 312, which reduces the difficulty of installing the elastic gasket. The elastic gasket can be made of materials including but not limited to silicone. It should be emphasized that the groove wall of the limiting groove 311 limits the rotation angle of the connecting block 321 to prevent the elastic gasket from being separated from the mounting groove 312 due to the excessive spacing between the first clamping portion 31 and the second clamping portion 32.

[0041] In other embodiments, the elastic gasket can also be arranged on the side of the second clamping portion 32 facing the first clamping portion 31, and the first clamping portion 31 is correspondingly provided with a mounting groove 312, or elastic gaskets are arranged on the sides of the first clamping portion 31 and the second clamping portion 32 facing each other.

[0042] refer to Figure 4 As shown, the clamping mechanism also includes a lifting assembly 5, which includes a lifting drive 51 and a lifting member 52. The lifting drive 51 is arranged on the mounting seat 1 and is located below the clamping space. The lifting member 52 is arranged at the output end of the lifting drive 51. The lifting drive 51 is configured to drive the lifting member 52 along the third direction ( Figure 1 The lifting member 52 moves back and forth in the Z direction and the reverse direction thereof. When the lifting member 52 rises, it can push the workpiece in the clamping space out of the clamping space. The first direction, the second direction and the third direction are perpendicular to each other.

[0043] Specifically, the lifting member 52 includes two lifting plates spaced apart along the second direction, both lifting plates are fixed to the output end of the lifting drive member 51, and the two lifting plates are located on both sides of the movable clamping block 3 or the fixed clamping block 2 along the second direction to simultaneously lift the opposite sides of the workpiece.

[0044] In one embodiment, in order to allow the workpiece to automatically detach from the clamping mechanism to enter the next process, the first direction is inclined to the horizontal plane, and the top plate 13 extends along the first direction. After the workpiece is ejected out of the clamping space by the lifting assembly 5, it can roll downward along the inclined direction of the top plate 13 to automatically enter the next process.

[0045] Specifically, the movable clamping block 3 is located at a relatively higher side of the top plate 13 along the first direction relative to the fixed clamping block 2, and the side of the fixed clamping block 2 facing away from the movable clamping block 3 is provided with an inclined third guide surface 23, and the third guide surface 23 gradually approaches the top plate 13 from the side close to the movable clamping block 3 to the side away from the movable clamping block 3 until it abuts against the top plate 13. After the workpiece is ejected out of the clamping space by the jacking assembly 5, it first rolls along the third guide surface 23 onto the top plate 13, and then rolls along the top plate 13 to the next process.

[0046] In one embodiment, the clamping mechanism further includes a walking assembly 6 to drive the entire clamping mechanism to move to the middle position of the workpiece, thereby achieving a better clamping effect. Specifically, the walking assembly 6 includes a walking support seat 62 and a walking drive member 61, the walking support seat 62 is fixed to the bottom of the mounting seat 1, and the walking drive member 61 is configured to provide walking power to the walking support seat 62, so that the walking support seat 62 moves along the external guide rail.

[0047] In one embodiment, the travel drive component 61 is a travel motor. In order to convert the rotational motion into linear motion, the travel component 6 also includes a gear 63 and a rack. The gear 63 is arranged at the output end of the travel motor, and the rack is arranged on the guide rail and meshes with the gear 63; or the travel component 6 also includes a screw rod and a screw rod sleeve. The screw rod and the screw rod sleeve rotate spirally, and the travel motor is connected to the screw rod.

[0048] The walking assembly 6 also includes a first guide wheel 64 and a second guide wheel 65 arranged on the walking support seat 62, and the axis directions of the first guide wheel 64 and the second guide wheel 65 are perpendicular. Among them, the first guide wheel 64 includes two groups arranged at intervals in the upper and lower directions, and the two groups of first guide wheels 64 can respectively roll with the upper and lower surfaces of the guide rail, and the second guide wheel 65 includes two groups arranged at intervals in the direction perpendicular to the extension of the guide rail, and the two groups of second guide wheels 65 can respectively roll with the surfaces on both sides of the width of the guide rail, so as to prevent the clamping mechanism from being separated from the guide rail and improve the stability of the clamping mechanism when walking.

[0049] In other embodiments, the travel drive member 61 may also adopt a linear drive structure, such as a linear module.

[0050] Based on the setting of the first direction being inclined relative to the horizontal plane, in one embodiment, the mounting seat 1 and the gear 63 are respectively arranged on opposite sides of the walking support seat 62 along the horizontal direction, the first guide wheel 64 and the second guide wheel are both located on the same side of the gear 63, and the first support plate 11 and the second support plate 12 are inclined toward the side of the gear 63, so as to maintain the center of gravity stability of the entire clamping mechanism.

[0051] In an embodiment of the present invention, a steel bar bending machine is also proposed, including a bending mechanism and a clamping mechanism in any of the above embodiments. According to the bending requirements of the steel bar, one bending mechanism can be set or two bending mechanisms can be set. Taking the setting of two bending mechanisms as an example, the two bending mechanisms are respectively located on opposite sides of the clamping mechanism, and based on the setting of the guide rail, the bending mechanisms are slidably set on the guide rail to adjust the bending position according to the length of the steel bar. The bending mechanism belongs to the prior art and will not be described in detail here. The clamping mechanism clamps the steel bar when the bending mechanism bends the steel bar to prevent the steel bar from falling off.

[0052] In addition, the rebar bending machine also includes a walking mechanism, a rebar ejection mechanism, a mold unlocking mechanism and a mold conversion mechanism. The walking mechanism is used to drive the bending mechanism to move along the guide rail, the rebar ejection mechanism is used to eject the bent rebar, the bending mechanism includes a mold with a self-locking function, the mold unlocking mechanism is used to unlock the mold from the locking shaft used to install the mold by the bending mechanism, and the mold conversion mechanism is used to replace the mold.

[0053] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A clamping mechanism, characterized in that: The clamping mechanism comprises: Mounting seat (1); A fixed clamping block (2) fixed to the mounting seat (1); A movable clamping block (3) is slidably disposed on the mounting seat (1) along a first direction, and a clamping space is formed between the movable clamping block (3) and the fixed clamping block (2); A clamping drive assembly (4), the clamping drive assembly (4) comprising a swing arm (42), a support rod (43) and a clamping drive member (41), the support rod (43) being hinged to the mounting seat (1) via a first hinge axis, the swing arm (42) being hinged to the support rod (43) via a second hinge axis, and the first end of the swing arm (42) being hinged to the movable clamping block (3) via a third hinge axis, the second end of the swing arm (42) being hinged to the clamping drive member (41) via a fourth hinge axis, the clamping drive member (41) being hinged to the mounting seat (1), and the distance between the first hinge axis and the third hinge axis being smaller than the distance between the first hinge axis and the fourth hinge axis.

2. The clamping mechanism according to claim 1, characterized in that: The movable clamping block (3) comprises a first clamping portion (31), a second clamping portion (32) and an elastic member (33); the second clamping portion (32) is arranged on a side of the first clamping portion (31) away from the fixed clamping block (2) and is movably connected to the first clamping portion (31); and the elastic member (33) is arranged between the first clamping portion (31) and the second clamping portion (32).

3. The clamping mechanism according to claim 2, characterized in that: The first clamping portion (31) is hinged to the second clamping portion (32) via a fifth hinge shaft.

4. The clamping mechanism according to claim 3, characterized in that: The first clamping portion (31) is provided with limiting grooves (311) on both sides along the second direction, the limiting groove (311) has a notch facing the second clamping portion (32), the second clamping portion (32) comprises a connecting block (321), the connecting block (321) is rotatably arranged in the limiting groove (311) through the fifth hinge shaft, the first clamping portion (31) and / or the second clamping portion (32) is provided with a mounting groove (312), the elastic member (33) is an elastic gasket, the elastic gasket is limited in the mounting groove (312), and the second direction is perpendicular to the first direction.

5. The clamping mechanism according to claim 3, characterized in that: The clamping mechanism further comprises a lifting assembly (5), wherein the lifting assembly (5) comprises a lifting drive member (51) and a lifting member (52), wherein the lifting drive member (51) is configured to drive the lifting member (52) to move back and forth along a third direction so as to eject the workpiece in the clamping space out of the clamping space, wherein the third direction is perpendicular to the first direction.

6. The clamping mechanism according to claim 3, characterized in that: The first direction is arranged obliquely to a horizontal plane, the mounting seat (1) has a top plate (13) extending along the first direction, and the fixed clamping block (2) and the movable clamping block (3) are both arranged on the top plate (13).

7. The clamping mechanism according to claim 6, characterized in that: The movable clamping block (3) is located on a side of the top plate (13) that is relatively higher along the first direction relative to the fixed clamping block (2); an inclined third guide surface (23) is provided on a side of the fixed clamping block (2) that is away from the movable clamping block (3); and the third guide surface (23) extends from a side close to the movable clamping block (3) to abut against the top plate (13).

8. The clamping mechanism according to any one of claims 1 to 7, characterized in that: The clamping mechanism further comprises a walking assembly (6), wherein the walking assembly (6) comprises a walking drive member (61), a first guide wheel (64) and a second guide wheel (65), wherein the walking drive member (61) is configured to drive the clamping mechanism to walk on the guide rail, wherein two groups of the first guide wheels (64) are arranged at intervals in the upper and lower parts, and two groups of the second guide wheels (65) are arranged at intervals in a direction perpendicular to the extension direction of the guide rail, and the first guide wheel (64) and the second guide wheel (65) are both in rolling contact with the guide rail.

9. The clamping mechanism according to any one of claims 1 to 7, characterized in that: The clamping drive member (41) comprises two fixedly connected thin cylinders, the output shafts of the two thin cylinders are on the same straight line, and the output shaft of one of the thin cylinders is hinged to the mounting seat (1), and the output shaft of the other thin cylinder is hinged to the swing arm (42).

10. A steel bar bending machine, characterized in that: It comprises a bending mechanism and a clamping mechanism as claimed in any one of claims 1 to 9, wherein the clamping mechanism is configured to clamp the steel bar when the bending mechanism bends the steel bar.

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