Steel bar bending mechanism, device and steel mesh processing line

Abstract

The present invention relates to a steel bar bending mechanism, a device and a steel bar mesh processing line. It is applicable to the field of steel bar mesh processing. The technical problem to be solved is: to provide a steel bar bending mechanism, a device and a steel bar mesh processing line. The technical scheme is: a steel bar bending mechanism, comprising: a working platform; a clamping mechanism for clamping the part of the steel bar to be bent on the lower working platform; a lifting mechanism for lifting the part of the steel bar to be bent on the working platform that is not clamped by the clamping mechanism; the lifting mechanism has a vertically arranged lifting slideway that can only move vertically, a lifting arm is installed in the upper part of the lifting slideway, the lower end of the lifting arm can be rotatably connected to the lifting slideway through a rotating shaft, and a V-groove roller for contacting the steel bar is installed at the upper end of the lifting arm; the lifting slideway is connected to a lifting drive mechanism that can drive the lifting slideway to move up and down, and the lifting arm is connected to a bending angle adjustment mechanism that can drive the lifting arm to rotate a certain angle around its lower end rotating shaft during the process of the lifting arm moving up with the lifting slideway.

Description

Technical Field

[0001] The invention relates to a steel bar bending mechanism, a device and a steel bar mesh processing line, which are applicable to the steel bar mesh processing field. Background Art

[0002] In the process of steel mesh processing, the steel bars often need to be bent, and in some cases the accuracy of the steel bar bending angle is required to be high. Since the steel bars have a certain elasticity, they will have a certain deformation and return to their original position after being bent, and the deformation and return of different types of steel bars are different, which makes it difficult for existing steel bar bending equipment to meet the bending accuracy requirements. Summary of the invention

[0003] The technical problem to be solved by the present invention is: in view of the above-mentioned problems, a steel bar bending mechanism, a device and a steel bar mesh processing line are provided.

[0004] The technical solution adopted by the present invention is: a steel bar bending mechanism, characterized by having:

[0005] Working platform, used to place the steel bars to be bent;

[0006] A clamping mechanism, located above the working platform, for clamping the portion of the steel bar to be bent on the working platform below;

[0007] A lifting mechanism, located below the working platform, is used to lift the portion of the steel bars to be bent on the working platform that is not pressed by the pressing mechanism, thereby cooperating with the pressing mechanism to achieve bending of the steel bars on the working platform;

[0008] The jacking mechanism has a jacking slideway which is arranged vertically and can only move vertically, a jacking arm is installed in the upper part of the jacking slideway, the lower end of the jacking arm is rotatably connected to the jacking slideway via a rotating shaft, and a V-groove roller for contacting the steel bar is installed at the upper end of the jacking arm;

[0009] The jacking slide is connected to a jacking drive mechanism that can drive the jacking slide to move up and down, and the jacking arm is connected to a bending angle adjustment mechanism that can drive the jacking arm to rotate a certain angle around its lower end rotation axis during the jacking arm moving up with the jacking slide.

[0010] The bending angle adjustment mechanism comprises a connecting rod seat, the connecting rod seat is connected to one end of the connecting rod via a rotating shaft, and the other end of the connecting rod is connected to the middle part of the lifting arm via the rotating shaft;

[0011] The connecting rod seat is installed below the working platform through a vertical position adjustment mechanism to adjust the vertical position of the connecting rod seat.

[0012] The vertical position adjustment mechanism comprises a guide rod, a fixing seat and a bushing, wherein the upper end of the guide rod is provided with an external thread, the fixing seat is fixed to the lower end of the working platform and the fixing seat is provided with a screw hole adapted to the external thread on the guide rod, and the guide rod is connected to the connecting rod seat via the bushing.

[0013] The clamping mechanism comprises a bending upper die fixing plate for contacting with and clamping the steel bars, and a clamping driving mechanism capable of driving the bending upper die fixing plate to move up and down.

[0014] A steel bar bending device, characterized by comprising:

[0015] frame;

[0016] The steel bar bending mechanism, its working platform and pressing mechanism are installed and fixed on the frame;

[0017] The steel bar pre-pressing mechanism is fixed on the frame and is used to press the steel bar and place the steel bar in a specified position before the pressing mechanism on the steel bar bending mechanism presses the steel bar.

[0018] The steel bar punching mechanism is fixed on the frame and is used for punching the steel bars bent by the steel bar bending mechanism.

[0019] The steel bar punching mechanism comprises:

[0020] A lifting beam is installed on the frame so as to be movable up and down through a punching lifting mechanism;

[0021] A punching groove is installed on the lifting beam so as to be horizontally movable via a horizontal lateral movement mechanism;

[0022] A stamping die is fixed on one side of the groove wall in the stamping groove;

[0023] A punching punch is installed on the other side of the punching slot wall and is used opposite to the punching die;

[0024] The stamping driving mechanism is fixed on the stamping groove, and its action end is connected to the stamping punch, and can drive the stamping punch to move toward the stamping die.

[0025] The steel bar preloading mechanism comprises a preloading plate and a preloading driving mechanism capable of driving the preloading plate to move up and down, wherein a guide groove adapted to the steel bar is formed on the lower end surface of the preloading plate.

[0026] The pre-pressing plate is located below the upper bending die fixing plate on the clamping mechanism, and a groove matching the pre-pressing plate is formed on the lower side of the upper bending die fixing plate.

[0027] A steel mesh processing line is characterized by having the steel bar bending device.

[0028] The beneficial effect of the present invention is that the working platform cooperates with the upper clamping mechanism to clamp the part of the steel bar to be bent, and the lower lifting mechanism lifts up the uncompressed part of the steel bar, so that a certain angle is formed between the compressed part and the uncompressed part of the steel bar, and the bending of the steel bar is completed.

[0029] The jacking mechanism in the present invention cooperates with the jacking slide, the jacking arm, the jacking drive mechanism and the bending angle adjustment mechanism, so that during the upward movement of the jacking arm, the jacking arm is tilted around the rotating axis of the lower end of the jacking arm toward the compressed part of the steel bar under the action of the bending angle adjustment mechanism, so that the bending angle of the steel bar is greater than 90°, and the bending angle is as close to 90° as possible after a certain return under the elastic action of the steel bar.

[0030] The bending angle adjustment mechanism of the present invention has a connecting rod seat with adjustable vertical position, and the connecting rod seat is connected to the middle part of the lifting arm through a connecting rod, so that the inclination angle of the lifting arm when bending the steel bar can be adjusted by the vertical position of the connecting rod seat to be suitable for bending various types of steel bars. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment.

[0032] Figure 2 It is a front structural diagram of the embodiment.

[0033] Figure 3 It is a side structural diagram of an embodiment.

[0034] Figure 4 A top view of an embodiment.

[0035] Figure 5 Schematic diagram of the three-dimensional structure of the lifting mechanism in the embodiment.

[0036] Figure 6 It is a front structural schematic diagram of the jacking mechanism in the embodiment.

[0037] Figure 7 It is a structural schematic diagram of the jacking state of the jacking mechanism in the embodiment.

[0038] Figure 8 Schematic diagram of the state of the lifting arm when the lifting slideway rises to the highest point in the embodiment (the dotted line is the state after the connecting seat is lowered).

[0039] Fig. 9 Schematic diagram of the structure of the clamping mechanism and the steel bar pre-compression mechanism in the embodiment.

[0040] Fig.10 Schematic diagram of the structure of the steel bar punching mechanism in the embodiment.

[0041] 1. Working platform; 2. Lifting slide; 3. Lifting arm; 4. V-groove roller; 5. Lifting drive mechanism; 6. Connecting rod seat; 7. Connecting rod; 8. Guide rod; 9. Fixed seat; 10. Bushing; 11. Bending upper die fixing plate; 11-1. Groove; 12. Pressing drive mechanism; 13. Lifting beam; 14. Stamping lifting mechanism; 15. Stamping groove; 16. Stamping die; 17. Stamping punch; 18. Stamping drive mechanism; 19. Pre-pressing plate; 20. Pre-pressing drive mechanism; 21. Guide rod; 22. Guide member; 23. Horizontal traverse mechanism; 24. Lifting arm. DETAILED DESCRIPTION

[0042] This embodiment is a steel mesh processing line for processing steel bars into steel meshes, which has a steel bending device for bending the two ends of the transverse steel bars on the steel mesh into 90 degrees and punching grooves on the bent sections.

[0043] In this example, the steel bar bending device includes a frame, a steel bar pre-stressing mechanism, a steel bar bending mechanism and a steel bar punching mechanism, wherein the steel bar bending mechanism has a working platform, a clamping mechanism and a jacking mechanism, etc. The working platform is fixed on the frame, and the working platform is used to place the steel mesh to be bent.

[0044] In this embodiment, the steel bar preloading mechanism includes a preloading plate and a preloading drive mechanism, wherein the preloading plate is located above the working platform, the lower end surface of the preloading plate is provided with a guide groove adapted to the steel bar, the upper part of the preloading plate is connected to the action end of the preloading drive mechanism via a connecting piece, and the preloading drive mechanism is installed and fixed on the frame. In this example, the preloading drive mechanism can drive the preloading plate to move up and down, and when the preloading plate moves down to press the steel bar to be bent on the working platform, the transverse steel bar to be bent on the steel mesh is positioned at a designated position on the working platform under the action of the guide groove on the lower end surface of the preloading plate.

[0045] In this example, the clamping mechanism includes a bending upper mold fixing plate and a clamping drive mechanism, wherein the bending upper mold fixing plate is located above the pre-pressing plate, and a groove is formed on the lower edge of the bending upper mold fixing plate corresponding to the pre-pressing plate, so that the bending upper mold fixing plate can further clamp the transverse steel bars clamped and positioned by the pre-pressing plate; the bending upper mold fixing plate is connected to the action end of the clamping drive mechanism, and the clamping drive mechanism is fixed on the frame. The clamping drive mechanism can drive the bending upper mold fixing plate to move up and down, and the bending upper mold fixing plate moves downward to clamp the middle section of the transverse steel bars to be bent on the working platform.

[0046] In this embodiment, the jacking mechanism is located below the working platform and has a jacking slide, a jacking arm, a bending angle adjustment mechanism, etc.

[0047] In this example, there are two jacking slides, which correspond to the positions of the two ends of the transverse steel bars to be bent. The jacking slides are arranged vertically, and a vertical slide rail I is installed on the jacking slide, and a slider I is installed on the vertical slide rail I. The slider I is connected to the frame through the slider base, so that the jacking slide can only move vertically under the action of the slider I and the vertical slide rail I.

[0048] In this example, the lower ends of the two lifting slides are commonly connected to the lifting arm, and a lifting drive mechanism is connected to the lower middle part of the lifting arm. The lifting drive mechanism can drive the two lifting slides to move up and down through the lifting arm.

[0049] In this embodiment, the jacking arm is installed in the upper part of the jacking slide, the lower end of the jacking arm is rotatably connected to the middle part of the jacking slide via a rotating shaft, and the upper end of the jacking arm is rotatably connected to a V-groove roller via a rotating shaft. The upper groove of the V-groove roller is adapted to the steel bar, and the V-groove roller is used to contact the steel bar when the jacking mechanism moves upward.

[0050] In this embodiment, a bending angle adjustment mechanism is provided in the middle position of the two jacking slides. The bending angle adjustment mechanism is connected to the two jacking arms on the two jacking slides and is used to adjust the angle of rotation of the jacking arm around its lower end rotating shaft during the upward movement of the jacking slide, thereby adjusting the angle of bending the steel bars by the jacking arm and the V-groove roller.

[0051] In this example, the bending angle adjustment mechanism includes a connecting rod seat and a vertical position adjustment mechanism, wherein the connecting rod seat is connected to two connecting rods corresponding to the two jacking arms one by one, one end of the connecting rod is connected to the connecting rod seat via a rotating shaft, and the other end of the connecting rod is connected to the middle part of the corresponding jacking arm via a rotating shaft; the connecting rod seat is installed and fixed on the lower end surface of the working platform with an adjustable vertical position via the vertical position adjustment mechanism, and the vertical position of the connecting rod seat is adjusted to achieve the angle of rotation of the jacking arm around its lower end rotating shaft during the upward movement of the jacking slide.

[0052] In this example, the vertical position adjustment mechanism includes a guide rod, a fixed seat and a bushing, wherein the guide rod is arranged vertically, and a connecting rod seat is installed on the guide rod via a bushing. An external thread is formed on the upper end of the guide rod, and the fixed seat is fixed to the lower end surface of the working platform. A screw hole matching the external thread on the guide rod is formed on the fixed seat. The guide rod is threadedly connected to the fixed seat, and the upper and lower positions of the guide rod are adjusted by rotating the guide rod to cooperate with the screw hole on the fixed seat, thereby adjusting the upper and lower positions of the connecting rod seat on the guide rod.

[0053] In this embodiment, the bushing is fixed on the guide rod, a limiting ring is formed on the upper end of the bushing, the connecting rod seat is sleeved on the bushing, and the limiting ring on the upper end of the bushing limits the connecting rod seat from moving upward.

[0054] In this example, a plurality of vertically arranged guide rods are mounted on the connecting rod seat, and a guide piece is mounted on the lifting arm below the connecting rod seat corresponding to the guide rod, and a guide hole matching the guide rod is opened on the guide rod, and the upper end of the guide rod is connected to the connecting rod seat, and the lower end of the guide rod passes downward through the guide hole on the guide piece. In this example, a spring is mounted on the guide rod, and the upper end of the spring abuts against the retaining ring on the upper part of the guide rod, and the lower end of the spring is supported on the guide piece.

[0055] In this embodiment, the connecting rod seat is sleeved on the bushing, and the two can rotate relatively. Under the action of the guide rod and the spring, the connecting rod seat is pressed from bottom to top on the limiting ring at the upper end of the bushing.

[0056] In this embodiment, the vertical position of the bushing on the guide rod is adjusted by rotating the guide rod and utilizing the threaded connection between the guide rod and the fixing seat, thereby adjusting the up and down position of the connecting rod seat, and finally achieving the inclination adjustment of the lifting arm.

[0057] In this embodiment, the steel bar stamping mechanism has a lifting beam and a stamping groove, wherein sliders II are installed at both ends of the lifting beam, and the sliders II are installed on the frame via vertical slide rails II. The middle part of the lifting beam is connected to the action end of the stamping lifting mechanism, and the stamping lifting mechanism is fixed on the frame. The stamping lifting mechanism can drive the lifting beam to move up and down.

[0058] In this example, a stamping groove is provided at each of the two bending sections corresponding to the two ends of the transverse reinforcement, and the two stamping grooves are installed on the lifting beam so as to be horizontally movable via a horizontal transverse movement mechanism. In this example, the horizontal transverse movement mechanism includes a transverse slide rail installed on the lifting beam, and the transverse slide rail is connected to the stamping groove via a transverse slider and a connecting plate. A transverse movement driving mechanism is provided between the two stamping grooves, and the transverse movement driving mechanism is fixed on the lifting beam, and the action end of the transverse movement driving mechanism is connected to the connecting plate, and the transverse movement driving mechanism can drive the stamping groove to move horizontally along the transverse slide rail via the connecting plate.

[0059] In this embodiment, a stamping die is fixed on one side of the stamping slot, and a stamping punch is installed on the other side of the slot. The position of the stamping punch corresponds to the stamping die. The stamping punch is connected to the action end of the stamping drive mechanism, and the stamping drive mechanism is fixedly connected to the stamping slot. The stamping drive mechanism can drive the stamping punch to move toward or away from the corresponding stamping die.

[0060] The working principle of this embodiment is as follows:

[0061] Before bending the steel mesh, first use the same type of steel bars as the steel mesh to test and check the bending effect of the steel bars. Then adjust the upper and lower positions of the connecting rod seat according to the bending effect of the steel bars so that the angle of the steel bars after bending meets the requirements.

[0062] The steel mesh to be bent is a primary mesh composed of a plurality of longitudinal steel bars and a plurality of straight transverse steel bars before entering the steel bar bending device;

[0063] The steel mesh to be bent enters the steel bar bending device along the longitudinal steel bars and is placed on the working platform of the steel bar bending device;

[0064] After the transverse steel bar to be bent moves to the corresponding position on the working platform, the steel bar pre-pressing mechanism is activated to press the transverse steel bar to be bent through the pre-pressing plate, so that the transverse steel bar is positioned at the specified position;

[0065] The clamping mechanism moves the upper bending die fixed plate downward to clamp the transverse steel bars at the designated position on the lower working platform. The upper bending die fixed plate clamps the middle section of the transverse steel bars, and the uncompressed sections at both ends of the transverse steel bars are the subsequent bending sections.

[0066] The jacking drive mechanism drives the jacking slideway to move upward, and the jacking slideway drives the jacking arm to move upward. Since the middle part of the jacking arm is connected to the connecting rod seat via a connecting rod, the jacking arm gradually rotates around the rotating shaft at its lower end during the upward movement of the jacking arm, and the upper end of the jacking arm gradually tilts toward the connecting rod seat side and the tilt angle gradually increases; during the upward movement of the jacking arm, the V-groove roller at its upper end contacts the uncompressed section of the transverse steel bar to bend the transverse steel bar, and the bending angle of the transverse steel bar gradually increases as the tilt angle of the jacking arm increases;

[0067] After the jacking drive mechanism drives the jacking slideway to move up to the specified position, it drives the jacking slideway to move downward, and the jacking arm gradually returns to its original position;

[0068] To avoid subsequent stamping operations, after the jacking mechanism is reset, the clamping mechanism is activated to drive the upper die fixing plate of the bending die to move up;

[0069] The steel bar punching mechanism is activated, and the punching groove moves downward along with the lifting beam and moves horizontally along the transverse slide rail, so that the bending sections at both ends of the transverse steel bars on the working platform are located in the punching groove;

[0070] The punching drive mechanism moves to drive the punching die to move toward the punching die, thereby punching a groove on the transverse steel bar bending section between the punching die and the punching die;

[0071] The steel bar stamping mechanism is reset, the steel bar pre-pressing mechanism is reset, and the working platform waits for the next transverse steel bar to be bent on the steel mesh to move to the corresponding position.

Claims

1. A steel bar bending mechanism, characterized in that: have: Working platform, used to place the steel bars to be bent; A clamping mechanism, located above the working platform, for clamping the portion of the steel bar to be bent on the working platform below; A lifting mechanism, located below the working platform, is used to lift the portion of the steel bars to be bent on the working platform that is not pressed by the pressing mechanism, thereby cooperating with the pressing mechanism to achieve bending of the steel bars on the working platform; The jacking mechanism has a jacking slideway which is arranged vertically and can only move vertically, a jacking arm is installed in the upper part of the jacking slideway, the lower end of the jacking arm is rotatably connected to the jacking slideway via a rotating shaft, and a V-groove roller for contacting the steel bar is installed at the upper end of the jacking arm; The jacking slide is connected to a jacking drive mechanism that can drive the jacking slide to move up and down, and the jacking arm is connected to a bending angle adjustment mechanism that can drive the jacking arm to rotate around its lower end rotation axis at a certain angle during the process of the jacking arm moving up with the jacking slide; The bending angle adjustment mechanism comprises a connecting rod seat, the connecting rod seat is connected to one end of the connecting rod via a rotating shaft, and the other end of the connecting rod is connected to the middle part of the lifting arm via the rotating shaft; The connecting rod seat is installed below the working platform via a vertical position adjustment mechanism to adjust the vertical position of the connecting rod seat; The vertical position adjustment mechanism comprises a guide rod, a fixing seat and a bushing, wherein the upper end of the guide rod is provided with an external thread, the fixing seat is fixed to the lower end of the working platform and the fixing seat is provided with a screw hole adapted to the external thread on the guide rod, and the guide rod is connected to the connecting rod seat via the bushing.

2. The steel bar bending mechanism according to claim 1, characterized in that: The clamping mechanism comprises a bending upper die fixing plate for contacting with and clamping the steel bars, and a clamping driving mechanism capable of driving the bending upper die fixing plate to move up and down.

3. A steel bar bending device, characterized in that: include: frame; The steel bar bending mechanism according to any one of claims 1 to 2, wherein the working platform and the clamping mechanism are mounted and fixed on the frame; The steel bar pre-pressing mechanism is fixed on the frame and is used to press the steel bar and place the steel bar in a specified position before the pressing mechanism on the steel bar bending mechanism presses the steel bar.

4. The steel bar bending device according to claim 3, characterized in that: Also includes: The steel bar punching mechanism is fixed on the frame and is used for punching the steel bars bent by the steel bar bending mechanism.

5. The steel bar bending device according to claim 4, characterized in that: The steel bar punching mechanism comprises: A lifting beam is installed on the frame so as to be movable up and down through a punching lifting mechanism; A punching groove is installed on the lifting beam so as to be horizontally movable via a horizontal lateral movement mechanism; A stamping die is fixed on one side of the groove wall in the stamping groove; A punching punch is installed on the other side of the punching slot wall and is used opposite to the punching die; The stamping driving mechanism is fixed on the stamping groove, and its action end is connected to the stamping punch, and can drive the stamping punch to move toward the stamping die.

6. The steel bar bending device according to claim 3, characterized in that: The steel bar preloading mechanism comprises a preloading plate and a preloading driving mechanism capable of driving the preloading plate to move up and down, wherein a guide groove adapted to the steel bar is formed on the lower end surface of the preloading plate.

7. The steel bar bending device according to claim 6, characterized in that: The pre-pressing plate is located below the upper bending die fixing plate on the clamping mechanism, and a groove matching the pre-pressing plate is formed on the lower side of the upper bending die fixing plate.

8. A steel mesh processing line, characterized by: A steel bar bending device according to any one of claims 3 to 7.

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