A machine for bending and cutting reinforcing steel bars and threaded steel bars used in housing construction

Abstract

This invention discloses an integrated bending and cutting machine for steel rebar and threaded steel used in building construction, belonging to the technical field of bending machines. It includes a housing, with a motor fixedly mounted on the lower surface of the housing. The output shaft of the motor passes through the side wall of the housing and is fixedly connected to a rotating wheel. The rotating wheel has evenly distributed ratchet teeth on its side, and a ratchet gear meshes with the left side of the ratchet teeth. A first limiting post is fixedly connected to the center of the upper surface of the ratchet gear, and a second limiting post is fixedly connected to the upper surface of the ratchet gear near its side. The machine can achieve bending of the steel rebar by rotating the motor forward to drive the first and second limiting posts, and then cutting the steel rebar by rotating the motor in the reverse direction. This integrated bending and cutting operation avoids the problem of needing to install a drive component to control the cutter in existing technologies, making the device small and portable.

Description

Technical Field

[0001] This invention relates to the field of bending machine technology, and more specifically, to an integrated bending and cutting machine for steel bars and threaded steel bars used in building construction. Background Technology

[0002] Steel bars are one of the most important materials in the construction industry. They are divided into straight bars or coiled bars, and their shapes are divided into plain round bars and ribbed bars. Ribbed bars are also called threaded bars. Before building construction, steel bars are used to tie the steel bars together, and then concrete is poured to form the framework of the building. In general, steel bars play a very important role in the construction industry and are an indispensable part of buildings.

[0003] Before tying reinforcing bars, workers usually need to cut them to the required size and then bend them to the required dimensions. Cutting and bending reinforcing bars are generally done using equipment, such as a Chinese patent disclosure of a rebar bending and cutting integrated machine for construction (authorization announcement number: CN211304562U). This disclosed document uses a motor to drive the bending of the reinforcing bars and a cylinder to drive the cutting, achieving integrated bending and cutting. However, this equipment is relatively large and difficult to transport, but it is suitable for batch operations.

[0004] After the steel bars are bent in batches, they are transported to the binding area for binding operations. However, in actual operation, the bending degree of some steel bars does not quite meet the actual requirements. If workers take them to the bending machine for bending, it will waste time and reduce work efficiency. If workers use the steel bars, the fact that the steel bars do not quite meet the actual needs will increase the binding difficulty for workers. Therefore, a bending body that is easy for workers to carry is particularly important.

[0005] In view of this, and in response to the above-mentioned shortcomings, this invention has improved and optimized the existing bending and cutting integrated machine, and developed an integrated bending and cutting machine for steel bars and threaded steel bars used in housing construction. Summary of the Invention

[0006] To address the problems existing in the prior art, the present invention aims to provide an integrated bending and cutting machine for steel bars and threaded steel bars used in building construction. This machine achieves bending of the steel bars by rotating a motor in the forward direction to drive the first and second limit posts, and then cutting the steel bars by rotating the motor in the reverse direction to drive the cutting machine. This integrated bending and cutting operation avoids the problem of needing to install drive components to control the cutter in existing technologies. This makes the device small in size, easy to carry, and convenient for workers' daily work.

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A rebar bending and cutting machine for building construction includes an outer casing. A motor is fixedly installed on the lower surface of the outer casing. The output shaft of the motor passes through the side wall of the outer casing and is fixedly connected to a rotating wheel. The side of the rotating wheel is provided with evenly distributed ratchet teeth. A ratchet gear is meshed with the left side of the ratchet teeth. A first limiting post is fixedly connected to the center of the upper surface of the ratchet gear. A second limiting post is fixedly connected to the upper surface of the ratchet gear near the side. A cutting mechanism is provided below the rotating wheel for cutting rebar.

[0009] Furthermore, the cutting mechanism includes a first spring, a first housing, a second spring, a drive rod, a fixing block, a control rod, and a cutting blade;

[0010] A first spring is fixedly connected to the end of the ratchet tooth away from the inclined plane. The first spring is embedded in the side of the rotating wheel. A first housing is fixedly connected to the bottom of the rotating wheel. A second spring is provided inside the first housing. A drive rod is fixedly connected to the end of the second spring near the opening of the first housing.

[0011] The upper side wall of the outer casing has a notch near the rotating wheel. A fixing block is slidably connected to the side wall of the outer casing at the notch. A cutter is fixedly connected to the rear end of the fixing block. A control rod is installed through the interior of the fixing block.

[0012] Furthermore, a rotating shaft is fixedly connected to the center of the lower end face of the ratchet, and a trigger rod is fixedly connected to the outer surface of the rotating shaft near the bottom. The end of the trigger rod away from the rotating shaft has an arc-shaped structure. A rotating disk is rotatably connected to the inner bottom wall of the outer shell below the ratchet. A portion of the rotating disk extends through the outer shell to the outside. A set of second housings is fixedly connected to the inner side wall of the rotating disk. A pressure sensor is installed at the left end of the inner side of the second housing. A third spring is provided on the right side of the pressure sensor. A trigger block is fixedly connected to the right end of the third spring. The right end of the trigger block extends through the second housing to the outside. The trigger block has an arc-shaped structure at the external position.

[0013] Furthermore, a scale line is engraved on the outer circumferential surface of the rotating disk, and an indicator is engraved on the lower surface of the outer casing near the rotating disk.

[0014] Furthermore, two conductive rings are connected to the lower surface of the rotating disk. The conductive rings are electrically connected to the pressure sensor, and a conductive groove is formed on the lower inner wall of the outer casing corresponding to the position of the conductive rings.

[0015] Furthermore, the front left side of the drive rod has an arc-shaped structure design, and the rear right side of the control rod has an arc-shaped structure design.

[0016] Furthermore, the control rod is fixedly connected to the fixing block, and the upper end of the control rod is made of a soft material.

[0017] Furthermore, a trapezoidal groove is provided at the notch sidewall of the outer shell, and a trapezoidal slider is slidably disposed inside the trapezoidal groove. The trapezoidal slider is fixedly connected to the fixing block on the side of the trapezoidal groove opening.

[0018] Furthermore, the trapezoidal slider is made of permanent magnet material, and the inner wall of the trapezoidal groove is made of magnetically conductive material.

[0019] Furthermore, a first cylinder is fixedly connected to the upper surface of the outer shell at the position to the right of the notch, and a second cylinder is fixedly connected to the upper surface of the outer shell at the position to the left of the notch.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] (1) This solution uses the forward rotation of the motor to drive the first and second limit columns to rotate, thereby achieving the bending of the steel bars. Then, the reverse rotation of the motor drives the cutting machine to cut the steel bars, realizing the integrated operation of bending and cutting the steel bars. This avoids the problem of the existing technology requiring the installation of drive components to control the cutter. This makes the device small in size and easy to carry, thus facilitating the daily work of the staff.

[0022] (2) This solution involves the staff twisting the rotating disc to control the indicator to the corresponding angle value on the scale line, which is the angle at which the steel bar needs to be bent, and then driving the motor to perform the bending operation. The operation is simple and convenient. Attached Figure Description

[0023] Figure 1 This is an overall structural appearance view of the present invention;

[0024] Figure 2 This is a three-dimensional view of the shearing component of the present invention;

[0025] Figure 3 This is a cross-sectional view of the driving component of the present invention;

[0026] Figure 4 This is a bottom view of the shearing component of the present invention;

[0027] Figure 5 This is a cross-sectional view of the interior of the first housing of the present invention;

[0028] Figure 6 This is an overall side view of the present invention;

[0029] Figure 7 For the present invention Figure 2 Enlarged view of point A in the middle;

[0030] Figure 8 For the present invention Figure 6 Enlarged view of point B;

[0031] Figure 9 This is a bottom view of the overall structure of the present invention;

[0032] Figure 10 This is a diagram showing the rotating disk of the present invention;

[0033] Figure 11 This is a cross-sectional view of the second housing of the present invention;

[0034] Figure 12 This is a bottom view of the rotating disk of the present invention;

[0035] Figure 13 This is a diagram showing the inner wall of the housing of the present invention located below the rotating shaft.

[0036] Explanation of the labels in the diagram:

[0037] 1. Outer shell; 2. Motor; 3. Rotating wheel; 4. Rattle tooth; 5. Ratchet gear; 6. First limiting post; 7. Second limiting post; 8. First spring; 9. First housing; 10. Second spring; 11. Drive rod; 12. Fixing block; 13. Control rod; 14. Cutting blade; 15. Trapezoidal groove; 16. Trapezoidal slider; 17. Handle; 18. Control button; 19. Rotating shaft; 20. Trigger rod; 21. Rotating disk; 22. Second housing; 23. Pressure sensor; 24. Third spring; 25. Trigger block; 26. Scale line; 27. Indicator; 28. Conductive ring; 29. ​​Conductive groove; 30. First cylinder; 31. Second cylinder. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0039] Please see Figures 1 to 4A rebar bending and cutting machine for building construction includes an outer shell 1. A first cylinder 30 is fixedly connected to the upper surface of the outer shell 1 on the right side, and a second cylinder 31 is fixedly connected to the upper surface of the outer shell 1 on the left side. First, the operator picks up the rebar to be processed, passes it through the first cylinder 30, and then through the second cylinder 31. A first limiting post 6 and a second limiting post 7 are provided on the left side of the second cylinder 31. The operator continues to move the rebar, passing it between the first limiting post 6 and the second limiting post 7, until the point where bending is required is between the first limiting post 6 and the second limiting post 7. Then, the operator holds the handle 17 and presses the control button 18 with their thumb. A motor 2 is fixedly installed on the lower surface of the outer shell 1. Pressing the control button 18 turns on the motor 2. The output shaft of the motor 2 passes through the side wall of the outer shell 1 and is fixedly connected to a rotating wheel 3. When the motor 2 is turned on, it drives the rotating wheel 3 to rotate in the forward direction. The rotating wheel 3 has evenly distributed ratchet teeth 4 on its side. A ratchet 5 is meshed on the left side of tooth 4. When the rotating wheel 3 rotates in the forward direction, it drives the ratchet 5 to rotate synchronously through the ratchet tooth 4. The first limiting post 6 is fixedly connected to the center of the upper surface of the ratchet 5, and the second limiting post 7 is fixedly connected to the upper surface of the ratchet 5 near the side. When the ratchet 5 rotates, it drives the first limiting post 6 and the second limiting post 7 to rotate. The first limiting post 6 and the second limiting post 7 will bend the steel bar between them. When the bending reaches the appropriate position, the motor 2 stops working. Then, the handle 17 is held and moved along the steel bar. A notch is opened on the upper surface of the outer shell 1 between the first cylinder 30 and the second cylinder 31. The part of the steel bar to be cut is moved to the notch. A cutting mechanism is set below the rotating wheel 3. The motor 2 is driven to rotate in the reverse direction. When the motor 2 rotates in the reverse direction, it drives the rotating wheel 3 to rotate in the reverse direction. When the rotating wheel 3 rotates in the reverse direction, it drives the cutting mechanism to cut the steel bar. In addition, the rotating wheel 3 does not drive the cutting mechanism when rotating in the forward direction.

[0040] like Figures 1 to 6 As shown, the cutting mechanism includes a first spring 8, a first housing 9, a second spring 10, a drive rod 11, a fixing block 12, a control rod 13, and a cutter 14;

[0041] A first spring 8 is fixedly connected to the end of the ratchet 4 away from the inclined surface. The first spring 8 is embedded inside the side of the rotating wheel 3. When the rotating wheel 3 rotates in the opposite direction, the inclined surface of the ratchet 4 will press against the inclined surface of the upper teeth of the ratchet 5, causing the ratchet 4 to move inward into the rotating wheel 3. At the same time, it compresses the first spring 8 and does not drive the ratchet 5 to rotate. A first housing 9 is fixedly connected to the lower part of the rotating wheel 3. When the rotating wheel 3 rotates in the opposite direction, it will drive the first housing 9 to rotate synchronously. A second spring 10 is provided inside the first housing 9. A drive rod 11 is fixedly connected to the end of the second spring 10 near the opening of the first housing 9. When the first housing 9 rotates, it will drive the drive rod 11 to rotate. The device has a notch on the upper side wall of the outer casing 1 near the rotating wheel 3. A fixing block 12 is slidably connected to the side wall of the outer casing 1 at the notch. A control rod 13 is installed through the inside of the fixing block 12. When the drive rod 11 rotates, its front right side will press against the control rod 13 and push the control rod 13 to move. When the control rod 13 moves, it will drive the fixing block 12 to slide along the notch. A cutter 14 is fixedly connected to the rear end of the fixing block 12. Finally, the fixing block 12 drives the cutter 14 to touch the surface of the steel bar and cut the steel bar. This realizes the integrated operation of bending and cutting steel bars. Moreover, the device is small in size, easy to carry, and convenient for the daily work of the staff.

[0042] like Figure 2 As shown, the front left side of the drive rod 11 has an arc-shaped structure design, and the rear right side of the control rod 13 has an arc-shaped structure design. When the rotating wheel 3 rotates in the forward direction, it will drive the drive rod 11 to rotate in the forward direction. The arc-shaped surface of the drive rod 11 will contact the arc-shaped surface of the control rod 13. If the control rod 13 is located at the rear end of the notch at this time, the drive rod 11 will push the control rod 13 to move towards the front end of the notch, that is, the cutter 14 returns to the initial position. As the drive rod 11 continues to move, the control rod 13 will hit the inner wall of the outer shell 1 and cannot move further. At this time, the arc-shaped surface of the drive rod 11 will be squeezed by the arc-shaped surface of the control rod 13. Finally, the drive rod 11 will enter the first shell 9, thereby ensuring that the rotating wheel 3 and the ratchet 5 rotate in the forward direction without driving the cutting mechanism.

[0043] like Figure 4 , Figures 9 to 11As shown, a rotating disk 21 is rotatably connected to the inner bottom wall of the outer shell 1, located below the ratchet 5. A portion of the rotating disk 21 extends through the outer shell 1 to the outside. When the bending angle of the reinforcing bar needs to be adjusted, the operator rotates the rotating disk 21 outside the outer shell 1. A set of second housings 22 is fixedly connected to the inner side wall of the rotating disk 21. A pressure sensor 23 is installed at the left end of the inner side of the second housing 22. A third spring 24 is set on the right side of the pressure sensor 23. A trigger block 25 is fixedly connected to the right end of the third spring 24. When the rotating disk 21 rotates, it will drive the outer second housing 22 and the internal components to rotate synchronously, moving the pressure sensor 23 to the angle to be bent. A rotating shaft 19 is fixedly connected to the center of the lower end face of the ratchet 5. The bottom of the rotating shaft 19 is rotatably connected to the inner wall of the outer shell 1, serving to support the ratchet 5. The outer surface of the rotating shaft 19 is close to the bottom. A trigger rod 20 is fixedly connected to the part. When the rotating shaft 19 rotates, it will drive the trigger rod 20 to rotate synchronously. The end of the trigger rod 20 away from the rotating shaft 19 has an arc-shaped structure design. The right end of the trigger block 25 passes through the second housing 22 and extends to the outside. The trigger block 25 has an arc-shaped structure design at the outside position. With this design, when the trigger rod 20 rotates, its arc surface will squeeze the arc surface of the trigger block 25. After being squeezed, the trigger block 25 will move into the interior of the second housing 22 and compress the third spring 24. At the same time, the pressure sensor 23 is also squeezed and generates an electrical signal. The controller and power supply battery are installed in the right half of the interior of the outer shell 1. The power supply battery supplies power to the electrical components of this invention. The electrical signal of the pressure sensor 23 will finally be transmitted to the controller. After receiving the electrical signal, the controller will control the motor 2 to stop working. At this time, the steel bar is bent to the preset angle. The operation is simple and convenient.

[0044] like Figure 9 As shown, a scale line 26 is engraved on the outer circular surface of the rotating disk 21, and the scale line 26 is engraved with angle values. An indicator 27 is engraved on the lower surface of the outer shell 1 near the rotating disk 21. The indicator 27 points to the corresponding angle value on the scale line 26, which is the angle at which the steel bar needs to be bent. This design makes it convenient for workers to perform bending angle operations, and the operation is simple and convenient.

[0045] like Figures 12 to 13 As shown, two conductive rings 28 are connected to the lower surface of the rotating disk 21. The conductive rings 28 are electrically connected to the pressure sensor 23. A conductive groove 29 is provided on the lower inner wall of the outer casing 1 corresponding to the position of the conductive rings 28. The conductive rings 28 can slide in the conductive groove 29 and contact the inner wall of the conductive groove 29. This design ensures that the pressure sensor 23 can be stably powered while rotating.

[0046] like Figure 2As shown, the control lever 13 is fixedly connected to the fixing block 12, and the upper end of the control lever 13 is made of soft material, which makes it convenient for the staff to pinch the upper end of the control lever 13 when the staff needs to move the cutter 14.

[0047] like Figures 7 to 8 As shown, a trapezoidal groove 15 is provided at the notch side wall of the outer shell 1. A trapezoidal slider 16 is slidably arranged inside the trapezoidal groove 15. The trapezoidal slider 16 is fixedly connected to the fixing block 12 on the side of the trapezoidal groove 15 opening, so as to ensure that the cutter 14 can move stably without deviation, and thus limit the movement range of the cutter 14.

[0048] like Figures 7 to 8 As shown, the trapezoidal slider 16 is made of permanent magnet material, and the inner wall of the trapezoidal groove 15 is made of magnetic material, which ensures that the trapezoidal slider 16 and the trapezoidal groove 15 are magnetically fixed, avoiding the problem that the cutter 14 moves at the notch because the device is not placed horizontally.

[0049] The above are merely preferred embodiments of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.

Claims

1. A rebar bending and cutting machine for building construction, comprising an outer casing (1), characterized in that: A motor (2) is fixedly installed on the lower surface of the outer shell (1). The output shaft of the motor (2) passes through the side wall of the outer shell (1) and is fixedly connected to a rotating wheel (3). The side of the rotating wheel (3) is provided with evenly distributed ratchet teeth (4). A ratchet gear (5) is meshed with the left side of the ratchet teeth (4). A first limiting post (6) is fixedly connected to the center of the upper surface of the ratchet gear (5). A second limiting post (7) is fixedly connected to the upper surface of the ratchet gear (5) near the side. A cutting mechanism is provided below the rotating wheel (3). The cutting mechanism is used to cut steel bars. The cutting mechanism includes a first spring (8), a first housing (9), a second spring (10), a drive rod (11), a fixing block (12), a control rod (13), and a cutter (14). The ratchet tooth (4) is fixedly connected to a first spring (8) at the end away from the inclined plane. The first spring (8) is embedded in the side of the rotating wheel (3). A first housing (9) is fixedly connected to the bottom of the rotating wheel (3). A second spring (10) is provided inside the first housing (9). A drive rod (11) is fixedly connected to the end of the second spring (10) near the opening of the first housing (9). The upper side wall of the outer shell (1) has a notch near the rotating wheel (3). A fixing block (12) is slidably connected to the side wall of the outer shell (1) at the notch. A cutter (14) is fixedly connected to the rear end of the fixing block (12). A control rod (13) is provided through the interior of the fixing block (12). A rotating shaft (19) is fixedly connected to the center of the lower end face of the ratchet (5). A trigger rod (20) is fixedly connected to the outer surface of the rotating shaft (19) near the bottom. The end of the trigger rod (20) away from the rotating shaft (19) is designed with an arc shape. A rotating disk (21) is rotatably connected to the inner bottom wall of the outer shell (1) below the ratchet (5). A part of the rotating disk (21) extends through the outer shell (1) to the outside. A set of second housings (22) is fixedly connected to the inner side wall of the rotating disk (21). A pressure sensor (23) is installed at the left end of the inner side of the second housing (22). A third spring (24) is provided on the right side of the pressure sensor (23). A trigger block (25) is fixedly connected to the right end of the third spring (24). The right end of the trigger block (25) extends through the second housing (22) to the outside. The trigger block (25) is designed with an arc shape at the position on the outside. The outer circular surface of the rotating disk (21) is engraved with a ring of scale lines (26), and the lower surface of the outer shell (1) is engraved with an indicator (27) near the rotating disk (21). The front left side of the drive rod (11) is designed with an arc shape, and the rear right side of the control rod (13) is designed with an arc shape.

2. The integrated bending and cutting machine for steel bars and threaded steel bars used in housing construction according to claim 1, characterized in that: Two conductive rings (28) are connected to the lower surface of the rotating disk (21). The conductive rings (28) are electrically connected to the pressure sensor (23). A conductive groove (29) is provided on the lower inner wall of the outer shell (1) corresponding to the position of the conductive rings (28).

3. The integrated bending and cutting machine for steel bars and threaded steel bars used in housing construction according to claim 1, characterized in that: The control rod (13) is fixedly connected to the fixing block (12), and the upper end of the control rod (13) is made of soft material.

4. The integrated bending and cutting machine for steel bars and threaded steel bars used in housing construction according to claim 1, characterized in that: A trapezoidal groove (15) is provided at the notch sidewall of the outer shell (1), and a trapezoidal slider (16) is slidably arranged inside the trapezoidal groove (15). The trapezoidal slider (16) is fixedly connected to the fixing block (12) on the side of the trapezoidal groove (15) opening.

5. The integrated bending and cutting machine for steel bars and threaded steel bars used in housing construction according to claim 4, characterized in that: The trapezoidal slider (16) is made of permanent magnet material, and the inner wall of the trapezoidal groove (15) is made of magnetic material.

6. The integrated bending and cutting machine for steel bars and threaded steel bars used in housing construction according to claim 1, characterized in that: A first cylinder (30) is fixedly connected to the upper surface of the outer shell (1) at the position to the right of the notch, and a second cylinder (31) is fixedly connected to the upper surface of the outer shell (1) at the position to the left of the notch.

Images