Clamping mechanism and steel bar bending equipment

Abstract

The present invention discloses a clamping mechanism and a steel bar bending device, wherein the clamping mechanism comprises: a pitching arm, a rear end of which is pivotally connected to a frame, a head of the pitching arm being formed with a pressure head, the pitching arm causing the pressure head to press a part of the steel bar against the frame through a pitching motion to restrict the steel bar from moving in a conveying direction; the pitching arm causing the pressure head to move away from the steel bar through a swinging motion to release the restriction on the steel bar; a driving frame, an interior of which is formed with a guide groove, the pitching arm passing through the guide groove, the groove wall of the guide groove having a wedge-shaped surface; wherein: the driving block forces the pitching arm to perform a pitching motion through the wedge-shaped surface through a reciprocating linear motion in the conveying direction and the reverse direction of the steel bar, thereby switching the clamping mechanism between a locked state for restricting the movement of the steel bar and a released state for releasing the restriction on the steel bar.

Description

Technical Field

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

[0002] Steel bar bending equipment is used to process steel bars into a reciprocating bending state. In the prior art, there are many types of equipment used for bending steel bars. However, these equipments in the prior art have the following defects when bending steel bars:

[0003] 1. The forming mechanism in the equipment is subject to various resistances that are not conducive to the forming of the steel bars during the process of bending the steel bars. The causes of these resistances are related to the structure of the forming mechanism itself, the structure of other functional mechanisms (components) except the forming mechanism, and the coordination between the forming mechanism and other functional mechanisms.

[0004] 2. Due to the existence of various resistances that are not conducive to the forming of steel bars, the steel bars cannot be bent and formed naturally. For example, the steel bars may be stretched during the bending process.

[0005] 3. The equipment has many power sources to drive different functional mechanisms (components) respectively, and the actions of each functional mechanism (component) and the coordination between each other are controlled by different electronic modules such as sensors, controllers and detection modules, control modules, etc. This not only increases the manufacturing and energy consumption of the equipment, but also increases the difficulty of controlling the operation of the equipment.

[0006] 4. Using electronic modules to control various functional mechanisms (components) has the defect of unreliable control. Summary of the invention

[0007] In view of the above-mentioned technical problems existing in the prior art, an embodiment of the present invention provides a clamping mechanism and a steel bar bending device.

[0008] In order to solve the above technical problems, the technical solution adopted in the embodiments of the present invention is:

[0009] A clamping mechanism, comprising:

[0010] A pitching arm, the tail of which is pivotally connected to the frame, a pressure head is formed at the head of the pitching arm, and the pitching arm causes the pressure head to press a part of the steel bar against the frame to restrict the steel bar from moving in the conveying direction through a pitching motion; the pitching arm causes the pressure head to move away from the steel bar through a back swinging motion to release the restriction on the steel bar;

[0011] A driving frame, wherein a guide groove is formed inside the driving frame, the pitch arm passes through the guide groove, and the groove wall of the guide groove has a wedge-shaped surface; wherein:

[0012] The driving frame reciprocates in a linear motion in the conveying direction and the reverse direction of the steel bars, and forces the pitching arm to perform a pitching motion via the wedge surface, so that the clamping mechanism switches between a locking state for restricting the movement of the steel bars and a release state for releasing the restriction on the steel bars.

[0013] Preferably, the driving frame is slidably connected to the frame for reciprocating linear motion in the conveying direction and the reverse direction of the steel bars.

[0014] Preferably, the clamping mechanism further comprises a limiting block, the limiting block forms a limiting groove, and two groove walls of the limiting groove are located on both sides of the pitch arm.

[0015] The invention also discloses a steel bar bending device, comprising:

[0016] frame;

[0017] A driving mechanism mounted on the frame;

[0018] A top-pressing and forming mechanism, which has a top plate, and the top plate is driven by a mechanism to press the steel bars above it to bend the steel bars into shape;

[0019] The above-mentioned clamping mechanism; wherein:

[0020] The clamping mechanism is located behind the top plate of the top pressing and forming mechanism along the direction of steel bar conveying;

[0021] Before the top plate presses the steel bars, the driving mechanism drives the driving frame to move in the conveying direction of the steel bars to switch the clamping mechanism to a locking state for restricting the movement of the steel bars; after the top plate completes bending the steel bars, the driving mechanism drives the driving frame to move in the opposite direction of the conveying direction of the steel bars to switch the clamping mechanism to a releasing state for releasing the restriction on the movement of the steel bars.

[0022] Preferably, the steel bar bending equipment further comprises a clamping mechanism, and the clamping mechanism is located in front of the top plate; wherein:

[0023] The clamping mechanism is slidably connected to the frame so as to be able to slide along the conveying direction and the reverse direction of the steel bars, and the clamping mechanism has a clamping state for clamping the steel bars and a releasing state for releasing the clamping of the steel bars;

[0024] Before the top plate presses the steel bars, the clamping mechanism switches to a clamping state;

[0025] After the top plate completes the bending and forming of the steel bars, the clamping mechanism switches to a released state.

[0026] Preferably, the steel bar bending equipment further comprises a linkage mechanism, the linkage mechanism comprises a first transmission mechanism and a second transmission mechanism; the first transmission mechanism and the second transmission mechanism are both driven by the driving mechanism; wherein:

[0027] After the top plate is driven by the driving mechanism to move downward to below the unbent steel bars, the first transmission mechanism is used to move the top plate in the opposite direction of the conveying direction of the steel bars;

[0028] The second transmission mechanism is used to drive the driving frame to move linearly and drive the pitch arm to perform a pitch movement so that the clamping mechanism can switch between a locked state and a released state.

[0029] Preferably,

[0030] The driving mechanism comprises a rotary driving component, a transmission shaft connected to an output end of the rotary driving component;

[0031] The first transmission mechanism comprises a first gear component mounted on the transmission shaft and a first toothed plate component capable of reciprocating linear motion in the conveying direction and the reverse direction of the steel bars; the first toothed plate component has two parallel and oppositely arranged racks, and a partial tooth segment is arranged on the outer periphery of the first gear component; the first gear component rotates through the transmission shaft so that its partial tooth segment is meshed with the two racks of the first toothed plate component in sequence to drive the first toothed plate component to reciprocate linear motion; wherein:

[0032] The first tooth plate component is equipped with a push plate, and the top plate can move in the conveying direction and the opposite direction of the steel bars. After the top plate moves downward to the bottom of the unbent steel bars, the first tooth plate component drives the push plate to push the top plate to move in the opposite direction of the conveying direction of the steel bars.

[0033] Preferably, the second transmission mechanism comprises a second gear component mounted on the transmission shaft and a second toothed plate component capable of reciprocating linear motion in the conveying direction and the reverse direction of the steel bars; the second toothed plate component has two racks arranged in parallel and opposite to each other, and a partial tooth segment is arranged on the outer periphery of the second gear component; the second gear component rotates through the transmission shaft so that its partial tooth segment is meshed with the two racks of the second toothed plate component in sequence to drive the second toothed plate component to reciprocate linear motion; wherein:

[0034] The driving frame is connected to the second tooth plate component. After the second tooth plate component drives the driving frame to move in the conveying direction of the steel bars, the clamping mechanism switches to a locked state. When the second tooth plate component drives the driving frame to move in the opposite direction of the conveying direction of the steel bars, the clamping mechanism switches to a released state.

[0035] Preferably, the pressing mechanism further comprises a counterweight mechanism, and the counterweight mechanism comprises a pull rope, a pulley for the pull rope to pass around, and a heavy hammer connected to the pull rope.

[0036] Preferably, the linkage mechanism further includes a third transmission mechanism;

[0037] The third transmission mechanism comprises:

[0038] A vertical guide plate is slidably connected to the frame so as to be able to slide along the conveying direction and the reverse direction of the steel bars, and a vertically extending guide groove is provided on the vertical guide plate; the top plate is slidably connected to the vertical guide plate by a pin shaft passing through the guide groove, and a transmission gear is installed on the vertical guide plate;

[0039] A first rack component, which is mounted on the frame;

[0040] The second rack component is arranged parallel to and opposite to the first rack component, and the second rack component is connected to the clamping mechanism; wherein:

[0041] The transmission gear is meshed with both the first rack member and the second rack member;

[0042] When the top plate moves in the opposite direction of the conveying direction of the steel bars, the transmission gear drives the second rack member by meshing with the first rack member and the second rack member to drive the clamping mechanism to move in the opposite direction of the conveying direction;

[0043] When the top plate moves toward the conveying direction of the steel bars, the transmission gear drives the second rack member by meshing with the first rack member and the second rack member to drive the clamping mechanism to move toward the conveying direction.

[0044] Compared with the prior art, the clamping mechanism and the steel bar bending device provided by the present invention have the following beneficial effects:

[0045] 1. When the top plate of the top pressure forming mechanism moves upward, it is not restricted in the conveying direction of the steel bars. Therefore, when the top plate is bending the steel bars, the steel bars are subjected to less force other than that used for bending.

[0046] 2. The clamping mechanism is not restricted in the conveying direction of the steel bars. The clamping mechanism slides flexibly with the bending process of the steel bars, which is bound to reduce the tensile force that hinders the bending of the steel bars.

[0047] 3. When the top plate is bending the steel bars, its position in the conveying direction is determined by the position of the clamping mechanism in the conveying direction, thereby determining the shape of the bent steel bars.

[0048] 4. The clamping mechanism locks the steel bars behind the top plate to determine the final forming position of the steel bar bending.

[0049] 5. The clamping mechanism locks and releases the steel bars by swinging the pitching arm. After the steel bars are released, the pitching arm will not interfere with the transportation of the bent steel bars.

[0050] 6. The driving mechanism drives the action of the top plate, the clamping mechanism and the movement of the clamping mechanism by means of a crank connecting rod connected to the same transmission shaft and a linkage mechanism including three transmission mechanisms, thereby avoiding driving different mechanisms or components by different driving mechanisms respectively, thereby reducing energy consumption and avoiding the use of electronic control modules to control the action timing of different mechanisms, thereby reducing the control difficulty and improving the control reliability at the same time.

[0051] 7. By utilizing the transmission of two pairs of gear components and the toothed plate component, the transmission shaft only needs to rotate in the same direction to enable the toothed plate component to drive the relevant functional components to achieve reciprocating linear motion. The design is ingenious.

[0052] This summary of various implementations or examples of the technology described in this disclosure is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In the drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar parts. The accompanying drawings generally illustrate various embodiments by way of example and not limitation, and together with the specification and claims, are used to illustrate the embodiments of the invention. When appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

[0054] Figure 1 A schematic diagram of the three-dimensional structure of the steel bar bending equipment provided by an embodiment of the present invention from one perspective (the top plate rises to the highest point).

[0055] Figure 2 A schematic diagram of the three-dimensional structure of the steel bar bending equipment provided by an embodiment of the present invention from another perspective (the top plate rises to the highest point).

[0056] Figure 3 A schematic diagram of the three-dimensional structure of the steel bar bending equipment provided by an embodiment of the present invention from another perspective (the top plate rises to the highest point).

[0057] Figure 4 for Figure 3 An enlarged view of detail B.

[0058] Figure 5 A schematic diagram of the three-dimensional structure of another perspective of the steel bar bending device provided in an embodiment of the present invention (the frame is hidden and the top plate rises to the highest point).

[0059] Figure 6 It is a schematic diagram of the three-dimensional structure of the top pressing forming mechanism provided in an embodiment of the present invention.

[0060] Figure 7 A schematic structural diagram of a linkage mechanism in a steel bar bending device provided in an embodiment of the present invention.

[0061] Figure 8 The top plate of the steel bar bending device provided in the embodiment of the present invention is a state view of the steel bar when it is bent into shape (the top plate rises to the highest point).

[0062] Fig. 9 A state view of the top plate of the steel bar bending equipment provided by an embodiment of the present invention during the descending process.

[0063] Fig.10 A state view of the top plate and clamping mechanism of the steel bar bending equipment provided in an embodiment of the present invention moving to the extreme position opposite to the conveying direction.

[0064] Reference numerals:

[0065] 10-top pressing forming mechanism; 11-top plate; 12-movable seat plate; 13-basic seat plate; 14-crank connecting rod; 15-first vertical guide plate; 151-first guide groove; 20-pressing mechanism; 21-pitch arm; 22-driving frame; 221-guide groove; 23-limiting block; 241-pull rope; 242-weight; 30-clamping mechanism; 31-plate frame; 311-bottom plate; 3111-limiting groove; 312-vertical plate; 32-swing block; 33-cylinder; 34-guide block; 341-limiting hole; 41-first transmission mechanism; 41 1-first gear component; 412-first tooth plate component; 42-second transmission mechanism; 421-second gear component; 422-second tooth plate component; 43-third transmission mechanism; 431-first rack component; 432-second rack component; 433-transmission gear; 434-second vertical guide plate; 4341-second guide groove; 44-adjusting mechanism; 441-push plate; 50-frame; 51-limiting plate; 60-driving mechanism; 61-motor; 62-gearbox; 63-transmission shaft; 70-magnetic damping component; 100-rebar. DETAILED DESCRIPTION

[0066] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0067] In order to keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and well-known components are omitted.

[0068] like Figures 1 to 10 As shown, the embodiment of the present invention discloses a steel bar bending device and a top pressing forming mechanism 10, a pressing mechanism 20, and a clamping mechanism 30 belonging to the device. The steel bar bending device also includes a frame 50, a driving mechanism 60, and a linkage mechanism.

[0069] like Figure 1 and Figure 2 As shown, the steel bars 100 are transported above the frame 50 , and two limiting plates 51 are installed on the frame 50 , and the bent steel bars 100 pass through the gap between the two limiting plates 51 .

[0070] like Figure 2 , Figure 3 and Figure 6 As shown, the driving mechanism 60 is installed on the frame 50 , and the driving mechanism 60 includes a motor 61 , a gearbox 62 connected to the motor 61 , and a transmission shaft 63 connected to the output end of the gearbox 62 , so that the transmission shaft 63 rotates under the drive of the motor 61 .

[0071] like Figure 6As shown, the top pressing forming mechanism 10 includes: a base plate 13, a movable base plate 12, a top plate 11, a crank connecting rod 14, and a first vertical guide plate 15. The base plate 13 is vertically fixed on the frame 50 and is located on one side of the radial direction of the steel bar 100 being transported; the movable base plate 12 is slidably connected to the base plate 13 by means of a slider and a vertically extending slide rail installed on the base plate 13 so as to be able to perform reciprocating vertical motion; the top plate 11 is connected to the movable base plate 12 by means of a slider and a horizontally extending slide rail installed on the movable base plate 12 so as to be able to perform reciprocating horizontal motion. The crank connecting rod 14 is arranged between the transmission shaft 63 and the top plate 11, and the transmission shaft 63 drives the top plate 11 through the crank connecting rod 14, so that the top plate 11 can perform a reciprocating up and down motion (or reciprocating lifting motion) once every rotation of the transmission shaft 63. In this way, the top plate 11 presses the steel bar 100 from below by moving upward to bend the steel bar 100, and the top plate 11 moves downward to escape from the bent area after being bent. The first vertical guide plate 15 is slidably connected to the frame 50 by means of a slider and a slide rail extending in the conveying direction of the steel bar 100, so that the first vertical guide plate 15 can move in the conveying direction and the reverse direction of the steel bar 100, and a vertically extending first guide groove 151 is provided on the first vertical guide plate 15, a pin shaft (a bearing can be installed on the pin shaft) is installed on the top plate 11, and the pin shaft passes through the first guide groove 151 so that the top plate 11 and the first vertical guide plate 15 are slidably connected, so that in the conveying direction and the reverse direction of the steel bar 100, the top plate 11 and the first vertical guide plate 15 move synchronously.

[0072] like Figure 1 and Figure 2As shown, along the conveying direction of the steel bar 100, the clamping mechanism 20 is arranged at the rear of the top plate 11, and the clamping mechanism 20 has a locking state for limiting the movement of the steel bar 100 behind the top plate 11 in the conveying direction and a releasing state for releasing the restriction on the movement of the steel bar 100 in the conveying direction. Specifically, the clamping mechanism 20 includes a pitching arm 21 and a driving frame 22; the tail of the pitching arm 21 is pivotally connected to the frame 50, and the head of the pitching arm 21 is formed with a pressure head, which is located above the steel bar 100 behind the top plate 11; the pitching arm 21 presses the pressure head against the frame 50 to limit the movement of the steel bar 100 in the conveying direction through the pitching movement; the pitching arm 21 moves the pressure head away from the steel bar 100 to release the restriction on the steel bar 100 through the tilting movement. A guide slot 221 is formed inside the driving frame 22, and the pitching arm 21 passes through the guide slot 221. The slot wall of the guide slot 221 has a wedge-shaped surface. The driving frame 22 reciprocates in the conveying direction and the reverse direction of the steel bar 100 to force the pitching arm 21 to perform a pitching motion through the wedge-shaped surface, so that the clamping mechanism 20 switches between a locked state that restricts the movement of the steel bar 100 and a released state that releases the restriction on the steel bar 100. In some preferred embodiments, the clamping mechanism 20 further includes a limit block 23 fixed to the frame 50, and the limit block 23 forms a limit slot, and the two slot walls of the limit slot are located on both sides of the pitching arm 21 to restrict the lateral movement of the pitching arm 21.

[0073] like Figure 3 and Figure 4 As shown, along the conveying direction of the steel bar 100, the clamping mechanism 30 is located in front of the top plate 11, and the clamping mechanism 30 is slidably connected to the frame 50 so as to be able to slide along the conveying direction and the reverse direction of the steel bar 100, and the clamping mechanism 30 has a clamping state for clamping the steel bar 100 in front of the top plate 11 and a release state for releasing the clamping of the steel bar 100. Specifically, the clamping mechanism 30 includes: a plate frame 31, a swing block 32, and a cylinder 33; the plate frame 31 is slidably connected to the frame 50 by a slider and a slide rail, and the plate frame 31 includes a vertical plate 312 and a bottom plate 311 fixed to the vertical plate 312, and a guide block 34 is fixed to the end of the bottom plate 311, and a limiting hole 341 is provided on the guide block 34, and the steel bar 100 passes through the limiting hole 341 to pass through the bottom plate 311, and the steel bar 100 is located in the limiting groove 31 provided on the bottom plate 311. 11; the pendulum block 32 is pivotally connected to the vertical plate 312, and the cylinder 33 is used to drive the pendulum block 32 to swing. The pendulum block 32 swings so that the edge of the pendulum block 32 presses the steel bar 100 against the bottom plate 311 so that the clamping mechanism 30 switches to the clamping state, and the pendulum block 32 swings in the opposite direction so that the edge of the pendulum block 32 is away from the steel bar 100 so that the clamping mechanism 30 switches to the release state. When the clamping mechanism 30 switches to the release state, the clamping mechanism 30 can move in the opposite direction of the conveying direction.

[0074] The state of the above-mentioned pressing mechanism 20, the state of the clamping mechanism 30 and the top pressing forming mechanism 10 cooperate in the following manner:

[0075] Before the top plate 11 moves upward to press the steel bar 100 to bend the steel bar 100 , the pressing mechanism 20 switches to the locking state, and the clamping mechanism 30 switches to the clamping state.

[0076] After the top plate 11 completes the bending of the steel bar 100 , the clamping mechanism 20 switches to a released state, and the clamping mechanism 30 switches to a released state.

[0077] The linkage mechanism includes a first transmission mechanism 41 , a second transmission mechanism 42 and a third transmission mechanism 43 .

[0078] like Figure 1 As shown, the first transmission mechanism 41 includes a first gear component 411 mounted on the transmission shaft 63 and a first toothed plate component 412 capable of reciprocating linear motion in the conveying direction and the reverse direction of the steel bars; the first toothed plate component 412 has two parallel and oppositely arranged racks, and a partial tooth segment is arranged on the outer periphery of the first gear component 411; the first gear component 411 rotates through the transmission shaft 63 so that its partial tooth segment is meshed with the two racks of the first toothed plate component 412 in sequence to drive the first toothed plate component 412 to reciprocate linear motion. Among them: the first toothed plate component 412 is equipped with a push plate 441 for pushing against the first vertical guide plate 15.

[0079] The second transmission mechanism 42 includes a second gear component 421 mounted on the transmission shaft 63 and a second toothed plate component 422 capable of reciprocating linear motion in the conveying direction and the reverse direction of the steel bar 100; the second toothed plate component 422 has two parallel and oppositely arranged racks, and a partial tooth segment is arranged on the outer periphery of the second gear component 421; the second gear component 421 is rotated by the transmission shaft 63 so that its partial tooth segment is meshed with the two racks of the second toothed plate component 422 in turn to drive the second toothed plate component 422 to reciprocate linear motion; the driving frame 22 is connected to the second toothed plate component 422, and after the second toothed plate component 422 drives the driving frame 22 to move in the conveying direction of the steel bar 100, the clamping mechanism 20 switches to the locked state, and when the second toothed plate component 422 drives the driving frame 22 to move in the reverse direction of the conveying direction of the steel bar 100, the clamping mechanism 20 switches to the released state. In some preferred embodiments, a counterweight mechanism is further provided, which includes a pull rope 241 , a pulley for the pull rope 241 to pass around, and a weight 242 connected to the pull rope 241 to improve the smoothness of the cooperation between the first gear component 411 and the first toothed plate component 412 .

[0080] like Figures 5 to 7As shown, the third transmission mechanism 43 includes: a second vertical guide plate 434, a first rack component 431, a first rack component 431 and a transmission gear 433. The first rack component 431 is mounted on the frame 50; the second rack component 432 is arranged parallel to the first rack component 431; the transmission gear 433 is mounted on the first vertical guide plate 15, and the transmission gear 433 is meshed with both the first rack component 431 and the second rack component 432; the second vertical guide plate 434 is provided with a vertically extending second guide groove 4341, and the second vertical guide plate 434 is fixedly connected to the second rack component 432, and a pin is mounted on the plate frame 31 of the clamping mechanism 30, and the clamping mechanism 30 is slidably connected to the second vertical guide plate 434 by the pin penetrating the second guide groove 4341, so that the clamping mechanism 30 and the second rack component 432 move synchronously. In this way, when the top plate 11 moves in the opposite direction of the conveying direction of the steel bars 100, the transmission gear 433 drives the second rack component 432 by meshing with the first rack component 431 and the second rack component 432 to drive the clamping mechanism 30 to move in the opposite direction of the conveying direction; when the top plate 11 moves in the conveying direction of the steel bars 100, the transmission gear 433 drives the second rack component 432 by meshing with the first rack component 431 and the second rack component 432 to drive the clamping mechanism 30 to move in the conveying direction.

[0081] The following is an introduction to the working process of the above-mentioned steel bar bending equipment:

[0082] like Fig.10 As shown, before the crank connecting rod 14 in the top pressing forming mechanism 10 drives the top plate 11 to move upward to press the steel bar 100 and bend the steel bar 100, the top plate 11 has been pushed to the extreme position (set position) in the opposite direction of the conveying direction of the steel bar 100 by the push plate 441 of the first transmission mechanism 41, and the cylinder 33 has switched the clamping mechanism 30 to the clamping state by driving the pendulum block 32 to swing, and the second transmission mechanism 42 drives the driving frame 22 and the pitch arm 21 to switch the clamping mechanism 20 to the locking state.

[0083] Then, the transmission shaft 63 drives the crank connecting rod 14 to move upward to press the steel bar 100. During the pressing process, the clamping mechanism 30 will adapt to the bending angle of the steel bar 100 and continuously approach the top plate 11. While the top plate 11 moves upward, it also moves in the conveying direction of the steel bar 100.

[0084] like Figure 8 As shown, when the crank connecting rod 14 causes the top plate 11 to rise to the highest position, the steel bars 100 sections near the left and right sides of the top plate 11 are bent into shape.

[0085] like Fig. 9As shown, the transmission shaft 63 drives the crank connecting rod 14 to continue to move, so that the top plate 11 moves downward. During the downward movement of the top plate 11, the second transmission mechanism 42 drives the driving frame 22 to move in the opposite direction of the conveying direction of the steel bar 100, so that the clamping mechanism 20 switches to the released state. At the same time, the cylinder 33 drives the pendulum block 32 to swing in the opposite direction, so that the clamping mechanism 30 switches to the released state.

[0086] After the crank connecting rod 14 drives the top plate 11 to move the top plate 11 below the steel bar 100, the conveying device located in front of the steel bar 100 bending device conveys the steel bar 100 for a distance, and the bent steel bar 100 is then moved into the gap between the two guide plates. At the same time, the first tooth plate component 412 in the first transmission mechanism 41 drives the push plate 441 to push against the first vertical guide plate 15, and then pushes the top plate 11 to move in the opposite direction of the conveying direction of the steel bar 100 until it moves to the extreme position (set position) in the opposite direction. In the process of the top plate 11 moving in the opposite direction of the conveying direction of the steel bar 100, the top plate 11 uses the third transmission mechanism 43 to make the clamping mechanism 30 also move in the opposite direction and increase the distance between the top plate 11 and the top plate 11.

[0087] After the top plate 11 and the clamping mechanism 30 move to the extreme position in the opposite direction again, and before the top plate 11 rises to press the steel bar 100, the first tooth plate component 412 in the first transmission mechanism 41 drives the push plate 441 to move in the conveying direction of the steel bar 100, the cylinder 33 drives the pendulum block 32 to rotate and switches the clamping mechanism 30 to the clamping state, and the second tooth plate component 422 in the second transmission mechanism 42 moves in the conveying direction of the steel bar 100 to switch the clamping mechanism 20 to the locking state.

[0088] The top plate 11 is driven by the crank connecting rod 14 to move upward again and bend the next section of the steel bar 100 into shape again.

[0089] The relevant mechanisms of the steel bar bending equipment continuously and cyclically perform the above-mentioned actions to complete the continuous bending of the steel bar 100.

[0090] In some preferred embodiments, the first transmission mechanism 41 also includes an adjusting mechanism 44. Specifically, the adjusting mechanism 44 is a screw mechanism, which is used to adjust the position of the push plate 441 relative to the first tooth plate component 412 in the conveying direction of the steel bar 100. Its purpose is to adjust the top plate 11 pushed by the push plate 441 to the reverse extreme position.

[0091] In some preferred embodiments, magnetic damping components 70 are provided on both sides of the movement direction of the second rack component 432. The two magnetic damping components 70 buffer and limit the two movement positions of the second rack component 432 by applying magnetic repulsion to the second rack component 432.

[0092] The advantages of the top pressing forming mechanism 10, the pressing mechanism 20, the clamping mechanism 30 and other related components provided by the present invention are:

[0093] 1. When the top plate 11 of the top pressing and forming mechanism 10 moves upward, it is not restricted in the conveying direction of the steel bar 100. Therefore, when the top plate 11 is bending and forming the steel bar 100, the steel bar 100 is subjected to less force other than that used for bending.

[0094] 2. The clamping mechanism 30 is not restricted in the conveying direction of the steel bar 100 , and the clamping mechanism 30 slides flexibly during the bending process of the steel bar 100 , which will inevitably reduce the tensile force that hinders the bending of the steel bar 100 .

[0095] 3. During the process of bending the steel bar 100 , the position of the top plate 11 in the conveying direction is determined by the position of the clamping mechanism 30 in the conveying direction, thereby determining the shape of the bent steel bar 100 .

[0096] 4. The clamping mechanism 20 locks the steel bar 100 behind the top plate 11 so that the final forming position of the steel bar 100 is determined.

[0097] 5. The clamping mechanism 20 locks and releases the steel bar 100 by swinging the pitching arm 21. After the steel bar 100 is released, the pitching arm 21 will not interfere with the conveyance of the bent steel bar 100.

[0098] 6. The driving mechanism 60 drives the top plate 11, the clamping mechanism 20 and the clamping mechanism 30 by means of the crank connecting rod 14 connected to the same transmission shaft 63 and the linkage mechanism including three transmission mechanisms, thereby avoiding driving different mechanisms or components through different driving mechanisms 60 respectively, thereby reducing energy consumption and avoiding the use of electronic control modules to control the action timing of different mechanisms, thereby reducing the control difficulty and improving the control reliability at the same time.

[0099] 7. By utilizing the transmission of two pairs of gear components and the toothed plate component, the transmission shaft 63 can be rotated in the same direction to enable the toothed plate component to drive the relevant functional components to achieve reciprocating linear motion, which is an ingenious design.

[0100] In addition, although exemplary embodiments have been described in the present invention, the scope includes any and all embodiments based on the present invention with equivalent elements, modifications, omissions, combinations (e.g., various embodiments intersecting schemes), adaptations or changes. The elements in the claims will be interpreted broadly based on the language adopted in the claims, and are not limited to the examples described in this specification or during the implementation of this application, and their examples will be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered as examples only, and the true scope and spirit are indicated by the following claims and the full scope of their equivalents.

[0101] The above description is intended to be illustrative rather than restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. For example, a person of ordinary skill in the art can use other embodiments when reading the above description. In addition, in the above-mentioned specific embodiments, various features can be grouped together to simplify the present invention. This should not be interpreted as an intention that a disclosed feature that is not required to be protected is necessary for any claim. On the contrary, the subject matter of the present invention may be less than all the features of a specific disclosed embodiment. Thus, the following claims are incorporated into the specific embodiments as examples or embodiments, wherein each claim is independently used as a separate embodiment, and it is considered that these embodiments can be combined with each other in various combinations or arrangements. The scope of the present invention should be determined with reference to the attached claims and the full scope of equivalent forms granted by these claims.

[0102] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A steel bar bending device, characterized in that: include: frame; A driving mechanism mounted on the frame; A top-pressing and forming mechanism, which has a top plate, and the top plate is driven by a mechanism to press the steel bars above it to bend the steel bars into shape; The clamping mechanism comprises: A pitching arm, the tail of which is pivotally connected to the frame, a pressure head is formed at the head of the pitching arm, and the pitching arm causes the pressure head to press a part of the steel bar against the frame to restrict the steel bar from moving in the conveying direction through a pitching motion; the pitching arm causes the pressure head to move away from the steel bar through a back swinging motion to release the restriction on the steel bar; A driving frame, wherein a guide groove is formed inside the driving frame, the pitch arm passes through the guide groove, and the groove wall of the guide groove has a wedge-shaped surface; wherein: The driving frame reciprocates in a straight line in the conveying direction and the reverse direction of the steel bars, and forces the pitching arm to perform a pitching motion through the wedge surface, so that the clamping mechanism switches between a locking state for restricting the movement of the steel bars and a release state for releasing the restriction on the steel bars; The driving frame is slidably connected to the frame for reciprocating linear motion in the conveying direction and the reverse direction of the steel bars; The clamping mechanism further includes a limit block, the limit block forms a limit slot, and two slot walls of the limit slot are located on both sides of the pitch arm; wherein: The clamping mechanism is located behind the top plate of the top pressing and forming mechanism along the direction of steel bar conveying; Before the top plate presses the steel bar, the driving mechanism switches the pressing mechanism to a locking state for restricting the movement of the steel bar by driving the driving frame to move in the conveying direction of the steel bar; after the top plate completes the bending of the steel bar, the driving mechanism switches the pressing mechanism to a releasing state for releasing the restriction on the movement of the steel bar by driving the driving frame to move in the opposite direction of the conveying direction of the steel bar; The steel bar bending equipment further comprises a clamping mechanism, which is located in front of the top plate; wherein: The clamping mechanism is slidably connected to the frame so as to be able to slide along the conveying direction and the reverse direction of the steel bars, and the clamping mechanism has a clamping state for clamping the steel bars and a releasing state for releasing the clamping of the steel bars; Before the top plate presses the steel bars, the clamping mechanism switches to a clamping state; After the top plate completes the bending and forming of the steel bars, the clamping mechanism switches to a release state; The steel bar bending equipment further comprises a linkage mechanism, which comprises a first transmission mechanism and a second transmission mechanism; both the first transmission mechanism and the second transmission mechanism are driven by the driving mechanism; wherein: After the top plate is driven by the driving mechanism to move downward to below the unbent steel bars, the first transmission mechanism is used to move the top plate in the opposite direction of the conveying direction of the steel bars; The second transmission mechanism is used to drive the driving frame to move linearly and drive the pitch arm to perform a pitch movement so that the clamping mechanism switches between a locked state and a released state; The driving mechanism comprises a rotary driving component, a transmission shaft connected to an output end of the rotary driving component; The first transmission mechanism comprises a first gear component mounted on the transmission shaft and a first toothed plate component capable of reciprocating linear motion in the conveying direction and the reverse direction of the steel bars; the first toothed plate component has two parallel and oppositely arranged racks, and a partial tooth segment is arranged on the outer periphery of the first gear component; the first gear component rotates through the transmission shaft so that its partial tooth segment is meshed with the two racks of the first toothed plate component in sequence to drive the first toothed plate component to reciprocate linear motion; wherein: The first tooth plate component is equipped with a push plate, and the top plate can move in the conveying direction and the opposite direction of the steel bars. After the top plate moves downward to below the unbent steel bars, the first tooth plate component drives the push plate to push the top plate to move in the opposite direction of the conveying direction of the steel bars; The second transmission mechanism comprises a second gear component mounted on the transmission shaft and a second toothed plate component capable of reciprocating linear motion in the conveying direction and the reverse direction of the steel bars; the second toothed plate component has two parallel and oppositely arranged racks, and a partial tooth segment is arranged on the outer periphery of the second gear component; the second gear component rotates through the transmission shaft so that its partial tooth segment is meshed with the two racks of the second toothed plate component in sequence to drive the second toothed plate component to reciprocate linear motion; wherein: The driving frame is connected to the second tooth plate component, and after the second tooth plate component drives the driving frame to move in the conveying direction of the steel bars, the clamping mechanism switches to a locked state, and when the second tooth plate component drives the driving frame to move in the opposite direction of the conveying direction of the steel bars, the clamping mechanism switches to a released state; The linkage mechanism also includes a third transmission mechanism; The third transmission mechanism comprises: A vertical guide plate is slidably connected to the frame so as to be able to slide along the conveying direction and the reverse direction of the steel bars, and a vertically extending guide groove is provided on the vertical guide plate; the top plate is slidably connected to the vertical guide plate by a pin shaft passing through the guide groove, and a transmission gear is installed on the vertical guide plate; A first rack component, which is mounted on the frame; The second rack component is arranged parallel to and opposite to the first rack component, and the second rack component is connected to the clamping mechanism; wherein: The transmission gear is meshed with both the first rack member and the second rack member; When the top plate moves in the opposite direction of the conveying direction of the steel bars, the transmission gear drives the second rack member by meshing with the first rack member and the second rack member to drive the clamping mechanism to move in the opposite direction of the conveying direction; When the top plate moves toward the conveying direction of the steel bars, the transmission gear drives the second rack member by meshing with the first rack member and the second rack member to drive the clamping mechanism to move toward the conveying direction.

2. The steel bar bending equipment according to claim 1, characterized in that: The pressing mechanism further comprises a counterweight mechanism, which comprises a pull rope, a pulley for the pull rope to pass around, and a weight connected to the pull rope.

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