Steel bar bender suitable for construction site and using method thereof

Abstract

The invention relates to the technical field of steel bar machining, in particular to a steel bar bending machine suitable for a construction site and a using method thereof. Comprising a working case, a driving disc is rotationally arranged in the middle of the upper end of the working case, a bending shaft is arranged on the driving disc, a round hole is formed in the middle of the driving disc, a driving shaft is arranged in the round hole, and the bottom of the driving shaft is connected to the bottom of the working case; a sliding groove is formed in the side, close to the extrusion part, of the working case, a sliding plate is arranged in the sliding groove, a sliding block sliding in the sliding groove is fixedly arranged on the sliding plate, reset devices used for resetting the sliding block are arranged on the two sides of the sliding block, and a driving assembly used for starting the driving disc is arranged in the working case.

Description

Technical Field

[0001] The present application relates to the technical field of steel bar processing, and in particular to a steel bar bending machine suitable for a construction site and a method of using the same. Background Art

[0002] Rebar bending machines are widely used in the processing of rebar for construction, bridges, tunnels, and other projects. They are suitable for bending various materials such as ordinary carbon steel and threaded steel. They can meet the various requirements for rebar shapes in projects, such as stirrups, tension bars, and bent bars.

[0003] The existing technology is to set a main shaft in the middle of the working platform, and then set a secondary shaft on the outside to verify that the main shaft rotates as the center, and then place the steel bars on the working platform, with the main shaft and the secondary shaft on both sides of the steel bars. The steel bars are bent by rotating the secondary shaft along the main shaft. However, during the bending process, the steel bars will become bent steel bars when they are bent, so the steel bars and the axial surface of the main shaft will inevitably rub against each other, thereby reducing the service life of the main shaft. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this application is to provide a steel bar bending machine suitable for construction sites and a method of using the same, which is used to solve the technical problems in the background technology.

[0005] The above-mentioned purpose of the present application is achieved through the following technical solutions: A steel bar bending machine suitable for construction sites, comprising a working chassis, a drive disk is rotatably provided in the middle of the upper end of the working chassis, a bending shaft is provided on the drive disk, a circular hole is provided in the middle of the drive disk, a drive shaft is provided in the circular hole, the bottom of the drive shaft is connected to the bottom of the working chassis, a pair of extrusions that can clamp the steel bars are installed on the upper end of the drive shaft, a sliding groove is provided on the side close to the extrusion, a sliding plate is provided in the sliding groove, a sliding block that slides with the sliding groove is fixed on the sliding plate, a resetting device for resetting the sliding block is provided on both sides of the sliding block, and a drive component for starting the drive disk is provided inside the working chassis.

[0006] By adopting the above technical solution, when bending the steel bars, the steel bars are placed between the extrusion parts, and then the drive disk is started through the drive assembly. The bending shaft on the drive disk will bend the steel bars. During the bending process, the steel bars will be attached to the sliding plate, and the steel bars will directly drive the sliding plate to move, so that no friction will be generated on the driving shaft sliding plate. In this application, the extrusion parts are used to replace the main shaft in the prior art, and the sliding plate is set to avoid the friction caused by the steel bars, thereby extending the service life.

[0007] Furthermore, the reset device includes a reset spring fixedly connected to both ends of the sliding block, both ends of the reset spring are fixedly connected to both ends of the sliding groove, and a driving extrusion assembly installed on the driving shaft is provided at the bottom between the extrusion pieces.

[0008] By adopting the above technical solution, when the bent steel bar drives the sliding plate to move on the extrusion part, when the bent steel bar on the outside is taken down, the return springs on both sides can squeeze or pull the sliding block to complete the return.

[0009] Furthermore, the driving extrusion assembly includes a rectangular groove opened at the upper end of the driving shaft, the bottom of the extrusion piece is slidably connected to the rectangular groove, a steel wire motor fixedly connected to the driving shaft is provided in the middle of the rectangular groove, a pair of contraction steel wires are fixedly provided on the output end of the steel wire motor, the other end of each contraction steel wire is fixedly connected to the extrusion pieces on both sides, and a push spring is fixedly provided between the extrusion pieces.

[0010] By adopting the above technical solution, after the steel bars to be bent are placed between the extrusion pieces, the steel wire motor is started to rotate and retract the contraction wires at both ends, thereby pulling the extrusion pieces at both ends to extrude and fix the steel bars. After the extrusion is completed, the steel wire motor is turned off, and the push spring will push the extrusion pieces at both ends, thereby releasing the extrusion of the steel bars.

[0011] Furthermore, a connecting shaft is rotatably connected to one end of the rectangular slot away from the steel wire motor, a pair of auxiliary steel wires are fixedly provided on the connecting shaft, the other end of the auxiliary steel wires is fixedly connected to the extrusion piece, and the connecting shaft is fixedly connected to the output end of the steel wire motor.

[0012] By adopting the above technical solution and setting up the auxiliary steel wire, after the steel wire motor is started, both sides of the extrusion piece can be pulled at the same time to replace and clamp the steel bars.

[0013] Furthermore, the drive assembly includes a drive motor fixedly connected to the inside of the working chassis, a drive tooth is fixedly provided on the output end of the drive motor, and a circle of driven teeth engaged with the drive tooth is fixedly connected to the bottom of the drive disk.

[0014] By adopting the above technical solution, after the driving motor is started, it drives the driving gear and then drives the engaged driven gear, so that the driving disc rotates, thereby completing the bending work.

[0015] Furthermore, a fixed shaft fixedly connected to the bottom of the working chassis is provided at the bottom of the driving shaft, a plurality of groups of lower rectangular bars are fixedly provided on the fixed shaft, an upper rectangular bar with the same structure as the lower rectangular bar is fixedly provided at the bottom of the driving shaft, a sliding ring is provided on the fixed shaft, a plurality of groups of sliding grooves matching the lower rectangular bar and the upper rectangular bar are provided on the sliding ring, a circle of linkage teeth is fixed on the sliding ring, the linkage teeth can engage with the driving teeth, a pushing component for pushing the sliding ring to move upward is provided at the bottom of the sliding ring, and the driving shaft and the driving disk are rotatably connected.

[0016] By adopting the above technical solution, the present application can choose to drive the driving shaft to rotate through the cooperation of the linkage teeth and the driving teeth, thereby assisting in bending the steel bars. Under normal circumstances, the slide groove on the sliding ring is connected to the upper rectangular bar and the lower rectangular bar at the same time, so that the linkage teeth on the sliding ring are not engaged with the driving teeth. When assisted bending is required, the sliding ring is lifted by driving the pushing component to make the sliding ring lose connection with the lower rectangular bar. At the same time, the linkage teeth on the sliding ring are engaged with the driving teeth, so that the driving shaft can rotate together when the driving motor drives the driving disk, and at the same time rotate in the opposite direction, thereby completing assisted bending.

[0017] Furthermore, the pushing assembly includes multiple groups of pushing cylinders fixedly connected to the bottom of the working chassis, a circle of pushing grooves is provided at the bottom of the sliding ring, and the output end of the pushing cylinder is slidably connected to the pushing groove.

[0018] By adopting the above technical solution, multiple groups of push cylinders are driven simultaneously, so that the sliding ring is lifted up, causing the driving teeth and the linkage teeth to engage.

[0019] Furthermore, an eccentric circular shaft is provided on the outside of the bending shaft, a through groove is provided on the non-center of the eccentric circular shaft, multiple groups of rectangular positioning grooves are provided on the side walls of the through groove, multiple groups of placement grooves are provided on the outside of the bending shaft, a limiting spring is provided in the placement groove, a limiting plate is fixedly provided at the end of the limiting spring, the end of the limiting plate is triangular, and a fixed component is provided in the middle of the bending shaft.

[0020] By adopting the above technical solution, since different steel bars have different sizes, it is necessary to replace bending shafts of different sizes in the existing technology. Therefore, in this application, an eccentric circular shaft is used to reduce the problem of needing to replace different sizes. The contact distance with different steel bars is changed by rotating the eccentric circular shaft. When the eccentric shaft is rotated, the rectangular positioning groove will move along the limit plate. The limit plate will squeeze the limit spring due to the inclined surfaces on both sides, allowing it to rotate. At the same time, this application also provides a fixing component to lock the eccentric circular shaft.

[0021] Furthermore, the fixing assembly includes a central groove opened in the middle of the bending shaft, a rotating plate is fixedly provided on the end of the limit spring away from the limit plate, a driving rod is fixedly provided on the rotating plate, the driving rod extends into the central groove and is rotatably connected to the bending shaft, a locking tooth is fixedly connected to the end of the driving rod, a locking shaft is rotatably provided in the central groove, and an active tooth engaged with the locking tooth is provided at the bottom of the locking shaft.

[0022] By adopting the above technical solution, after the eccentric circular shaft is rotated, by rotating the locking shaft, the active teeth at the bottom of the locking shaft will drive the locking teeth, thereby rotating the limit plate, so that the non-inclined surface at the end of the limit plate contacts the left and right sides of the positioning rectangular groove, thereby preventing the eccentric circular shaft from rotating.

[0023] Furthermore, a method for using a steel bar bending machine suitable for a construction site is applied to a steel bar bending machine suitable for a construction site described in any one of the above technical solutions, comprising the following steps:

[0024] S1. According to the diameter of the steel bar to be bent and the required bending radius, rotate the eccentric shaft to the appropriate position. When rotating the eccentric shaft, ensure that the limit plate can rotate smoothly and snap into the rectangular positioning groove;

[0025] S2. Rotate the locking shaft to engage the active teeth with the locking teeth, thereby fixing the position of the eccentric shaft to prevent it from moving during operation;

[0026] S3. Place the steel bar to be bent between the two extrusions, ensuring that one end of the steel bar is aligned and close to the sliding plate;

[0027] S4. Start the steel wire motor through the control panel. The output end of the steel wire motor will pull the contraction steel wire, and then pull the extrusion piece closer to the center to clamp the steel bar;

[0028] S5. Start the drive motor through the control panel. The output end of the drive motor drives the driving gear to rotate, thereby driving the driven gear meshing with the driving gear and the drive disc to rotate;

[0029] S6. When the steel bar is bent to the desired angle or shape, stop the drive motor through the control panel, turn off the wire motor, and push the spring to push the extrusion piece to move to both sides, releasing the clamp on the steel bar. At this time, the bent steel bar can be removed;

[0030] S7. After the steel bar is removed, the return spring will squeeze or pull the sliding block to return the sliding plate to its initial position.

[0031] By adopting the above technical solution, by rotating the eccentric shaft and fixing its position, it is possible to quickly adapt to steel bars of different diameters and bending radii, greatly improving work efficiency. At the same time, simple button operations on the control panel make it easy and quick to start and stop the motor, clamp and release the steel bars, and other actions. The combination of the eccentric shaft with the rectangular positioning slot and the limit plate ensures the accuracy and consistency of the steel bar bending, avoiding the errors caused by replacing bending shafts of different sizes in traditional methods. The combination of the wire motor and the extrusion ensures that the steel bars are stably clamped during the bending process, making it difficult to slide or fall off, thereby ensuring the quality of the bending. In addition, the setting of the sliding plate and the return spring avoids direct friction between the steel bars and the drive shaft, thereby extending the service life of the equipment.

[0032] In summary, this application provides the following beneficial technical effects: By designing the extrusion element and sliding plate combination, the rebar moves directly against the sliding plate during the bending process, avoiding direct friction with the drive shaft. This not only reduces wear on the drive shaft but also extends the service life of the entire device. Furthermore, the design of the reset mechanism ensures that the sliding plate automatically resets after the rebar is bent, preparing for the next operation.

[0033] The extrusion piece can stably clamp the steel bar, ensuring that the steel bar will not slip or deflect during the bending process. This greatly improves the accuracy and stability of the bending, making the shape of the bent steel bar more in line with the design requirements.

[0034] The rebar bending machine is relatively simple to operate. Simply place the rebar between the extrusion elements and activate the drive assembly to complete the bending process. This greatly simplifies the operation process and improves work efficiency. Furthermore, the machine's rational structural design makes maintenance and servicing easier.

[0035] By adjusting the position of the extrusion parts and sliding plates, as well as replacing bending shafts of different specifications, the steel bar bending machine can adapt to the bending requirements of steel bars of different diameters and lengths. This makes the equipment more adaptable and flexible on the construction site. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 2 is a schematic diagram of the overall structure of the embodiment;

[0037] Figure 2 yes Figure 1 Enlarged view of point A in the middle:

[0038] Figure 3 2. It is a schematic diagram of the inner structure of the sliding plate in the embodiment;

[0039] Figure 4 This is a schematic diagram of the internal structure of the working chassis in the embodiment;

[0040] Figure 52 is a schematic diagram of the structure of the fixed component in the embodiment.

[0041] Figure numerals: 1. working chassis; 2. driving disk; 3. bending shaft; 31. eccentric circular shaft; 32. locking shaft; 33. active meshing gear; 34. rotating plate; 35. limit spring; 36. limit plate; 37. locking meshing gear; 4. extrusion member; 41. sliding plate; 42. sliding block; 43. return spring; 44. wire motor; 45. contraction wire; 46. connecting shaft; 47. auxiliary wire; 48. pushing spring; 5. driving motor; 51. driving meshing gear; 52. driving shaft; 53. driven meshing gear; 54. fixed shaft; 55. sliding ring; 56. linkage meshing gear; 57. upper rectangular bar; 58. lower rectangular bar; 59. pushing cylinder. DETAILED DESCRIPTION

[0042] The present application is further described in detail below with reference to the accompanying drawings.

[0043] Example, see Figure 1-Figure 5 A steel bar bending machine suitable for construction sites includes a working chassis 1, a driving disk 2 is rotatably provided in the middle of the upper end of the working chassis 1, a bending shaft 3 is provided on the driving disk 2, a circular hole is provided in the middle of the driving disk 2, a driving shaft 52 is provided in the circular hole, and the bottom of the driving shaft 52 is connected to the bottom of the working chassis 1, and a pair of extrusions 4 for clamping the steel bars are installed on the upper end of the driving shaft 52, a sliding groove is provided on the side close to the extrusion 4, a sliding plate 41 is provided in the sliding groove, a sliding block 42 that slides with the sliding groove is fixed on the sliding plate 41, and a resetting device for resetting the sliding block 42 is provided on both sides of the sliding block 42, and a driving component for starting the driving disk 2 is provided inside the working chassis 1.

[0044] When bending the steel bars, the steel bars are placed between the extrusion pieces 4, and then the drive disc 2 is started through the drive assembly. The bending shaft 3 on the drive disc 2 will bend the steel bars. During the bending process, the steel bars will be attached to the sliding plate 41, and the steel bars will directly drive the sliding plate 41 to move, so that no friction will be generated on the driving shaft 52 and the sliding plate 41. In this application, the extrusion piece 4 is used to replace the main shaft in the prior art, and the sliding plate 41 is set to avoid the friction caused by the steel bars, thereby extending the service life.

[0045] In this embodiment, the reset device includes a reset spring 43 fixedly connected to both ends of the sliding block 42, and both ends of the reset spring 43 are fixedly connected to both ends of the sliding groove. A driving extrusion assembly installed on the driving shaft 52 is provided at the bottom between the extrusion pieces 4.

[0046] When the bent steel bar drives the sliding plate 41 to move on the extrusion member 4 and the bent steel bar on the outside is taken down, the return springs 43 on both sides can squeeze or pull the sliding block 42 to complete the return.

[0047] In this embodiment, the driving extrusion assembly includes a rectangular groove opened at the upper end of the driving shaft 52, the bottom of the extrusion member 4 is slidingly connected to the rectangular groove, and a wire motor 44 fixedly connected to the driving shaft 52 is provided in the middle of the rectangular groove. A pair of contraction steel wires 45 are fixedly provided on the output end of the wire motor 44, and the other end of each contraction steel wire 45 is fixedly connected to the extrusion member 4, and a push spring 48 is fixedly provided between the extrusion members 4.

[0048] After the steel bar to be bent is placed between the extrusion pieces 4, the steel wire motor 44 is started to rotate and retract the contraction wires 45 at both ends, thereby pulling the extrusion pieces 4 at both ends to extrude and fix the steel bar. After the extrusion is completed, the steel wire motor 44 is turned off, and the push spring 48 will push the extrusion pieces 4 at both ends, thereby releasing the extrusion of the steel bar.

[0049] In this embodiment, a connecting shaft 46 is rotatably connected to one end of the rectangular slot away from the steel wire motor 44, and a pair of auxiliary steel wires 47 are fixedly provided on the connecting shaft 46. The other end of the auxiliary steel wire 47 is fixedly connected to the extrusion member 4, and the connecting shaft 46 is fixedly connected to the output end of the steel wire motor 44.

[0050] By setting the auxiliary steel wire 47, after the steel wire motor 44 is started, both sides of the extrusion member 4 can be pulled at the same time to clamp the steel bars in a replacement manner.

[0051] In this embodiment, the drive assembly includes a drive motor 5 fixedly connected to the inside of the working chassis 1, a drive tooth 51 is fixedly provided on the output end of the drive motor 5, and a circle of driven teeth 53 engaged with the drive tooth 51 is fixedly connected to the bottom of the drive disk 2.

[0052] After the driving motor 5 is started, it drives the driving teeth 51 and thus drives the engaged driven teeth 53, so that the driving disc 2 rotates, thereby completing the bending work.

[0053] In this embodiment, a fixed shaft 54 ​​fixedly connected to the bottom of the working chassis 1 is provided at the bottom of the driving shaft 52, and multiple groups of lower rectangular bars 58 are fixedly provided on the fixed shaft 54. An upper rectangular bar 57 with the same structure as the lower rectangular bar 58 is fixedly provided at the bottom of the driving shaft 52. A sliding ring 55 is provided on the fixed shaft 54, and multiple groups of sliding grooves matching the lower rectangular bars 58 and the upper rectangular bars 57 are provided on the sliding ring 55. A circle of linkage teeth 56 is fixedly provided on the sliding ring 55, and the linkage teeth 56 can engage with the driving teeth 51. A pushing component for pushing the sliding ring 55 to move upward is provided at the bottom of the sliding ring 55, and the driving shaft 52 is rotationally connected to the driving disk 2.

[0054] In the present application, the driving shaft 52 can be driven to rotate by cooperating with the linkage gear 56 and the driving gear 51, thereby assisting in bending the steel bars. Under normal circumstances, the slide groove on the sliding ring 55 is connected to the upper rectangular bar 57 and the lower rectangular bar 58 at the same time, so that the linkage gear 56 on the sliding ring 55 is not engaged with the driving gear 51. When assisted bending is needed, the sliding ring 55 is lifted by driving the pushing component to make the sliding ring 55 lose connection with the lower rectangular bar 58, and at the same time, the linkage gear 56 on the sliding ring 55 is engaged with the driving gear 51, so that the driving shaft 52 can rotate together when the driving motor 5 drives the driving disk 2, and at the same time rotate in the opposite direction, thereby completing assisted bending.

[0055] In this embodiment, the pushing assembly includes multiple groups of pushing cylinders 59 fixedly connected to the bottom of the working chassis 1. A circle of pushing grooves is provided at the bottom of the sliding ring 55. The output end of the pushing cylinder 59 is slidably connected to the pushing groove.

[0056] The plurality of push cylinders 59 are driven simultaneously, thereby lifting the sliding ring 55 so that the driving teeth 51 and the linkage teeth 56 engage with each other.

[0057] In this embodiment, an eccentric circular shaft 31 is provided on the outside of the bending shaft 3, a through groove is provided on the non-center of the eccentric circular shaft 31, and multiple groups of rectangular positioning grooves are provided on the side walls of the through groove. Multiple groups of placement grooves are provided on the outside of the bending shaft 3, and a limiting spring 35 is provided in the placement groove. A limiting plate 36 is fixed at the end of the limiting spring 35, and the end of the limiting plate 36 is triangular. A fixed component is provided in the middle of the bending shaft 3.

[0058] Since different steel bars have different sizes, the existing technology requires replacing bending shafts 3 of different sizes. Therefore, in this application, an eccentric circular shaft 31 is used to reduce the problem of needing to replace different sizes. The contact distance with different steel bars is changed by rotating the eccentric circular shaft 31. When the eccentric shaft is rotated, the rectangular positioning groove will move along the limit plate 36. The limit plate 36 will squeeze the limit spring 35 due to the inclined surfaces on both sides, allowing it to rotate. At the same time, this application also provides a fixing component to lock the eccentric circular shaft 31.

[0059] In this embodiment, the fixing component includes a central groove opened in the middle of the bending shaft 3, and a rotating plate 34 is fixedly provided on the end of the limit spring 35 away from the limit plate 36. The rotating plate 34 is fixedly provided with a driving rod, which extends into the central groove and is rotatably connected to the bending shaft 3. The end of the driving rod is fixedly connected with a locking tooth 37, and a locking shaft 32 is rotatably provided in the central groove. The bottom of the locking shaft 32 is provided with an active tooth 33 that engages with the locking tooth 37.

[0060] After the eccentric circular shaft 31 is rotated, by rotating the locking shaft 32, the active gear 33 at the bottom of the locking shaft 32 will drive the locking gear 37, thereby rotating the limit plate 36, so that the non-inclined surface at the end of the limit plate 36 contacts the left and right sides of the positioning rectangular groove, thereby preventing the eccentric circular shaft 31 from rotating.

[0061] A method for using a steel bar bending machine suitable for a construction site is applied to the steel bar bending machine suitable for a construction site described in any one of the above technical solutions, comprising the following steps:

[0062] S1. Rotate the eccentric shaft 31 to the appropriate position according to the diameter of the steel bar to be bent and the required bending radius. When rotating the eccentric shaft 31, ensure that the limit plate 36 can rotate smoothly and snap into the rectangular positioning groove;

[0063] S2. Rotate the locking shaft 32 to engage the active teeth 33 with the locking teeth 37, thereby fixing the position of the eccentric shaft 31 to prevent it from moving during operation;

[0064] S3. Place the steel bar to be bent between the two extrusion members 4, ensuring that one end of the steel bar is aligned and close to the sliding plate 41;

[0065] S4. Start the steel wire motor 44 through the control panel. The output end of the steel wire motor 44 will pull the contraction steel wire 45, thereby pulling the extrusion member 4 toward the center to clamp the steel bar;

[0066] S5. Start the drive motor 5 through the control panel. The output end of the drive motor 5 drives the driving gear 51 to rotate, thereby driving the driven gear 53 meshing with the driving gear 51 and the drive disc 2 to rotate.

[0067] S6. When the steel bar is bent to the desired angle or shape, the control panel stops the drive motor 5, turns off the wire motor 44, and the spring 48 pushes the extrusion member 4 to move to both sides, releasing the clamping force on the steel bar. At this point, the bent steel bar can be removed.

[0068] S7. After the steel bar is removed, the return spring 43 will squeeze or pull the sliding block 42 to return the sliding plate 41 to its initial position.

[0069] By adopting the above technical solution, by rotating the eccentric shaft 31 and fixing its position, it is possible to quickly adapt to steel bars of different diameters and bending radii, greatly improving work efficiency. At the same time, simple button operations on the control panel make it easy and quick to start and stop the motor, clamp and release the steel bars, and other actions. The cooperation between the eccentric shaft 31 and the rectangular positioning groove and the limit plate 36 ensures the accuracy and consistency of the steel bar bending, avoiding the errors caused by replacing the bending shaft 3 of different sizes in the traditional method. The cooperation between the wire motor 44 and the extrusion part 4 ensures that the steel bar is stably clamped during the bending process, and is not easy to slide or fall off, thereby ensuring the bending quality. In addition, the setting of the sliding plate 41 and the return spring 43 avoids direct friction of the steel bar on the drive shaft 52, thereby extending the service life of the equipment.

[0070] Specific implementation process: First, adjust the position of the eccentric shaft 31 according to the diameter of the steel bar to be bent and the required bending radius. By rotating the eccentric shaft 31, change its contact distance with the bending shaft 3 to adapt to steel bars of different sizes. When the eccentric shaft 31 is rotated, the rectangular positioning groove will move along the limit plate 36. The limit plate 36 squeezes the limit spring 35 due to the inclined design on both sides, so that the limit plate 36 can rotate smoothly and be stuck in the appropriate rectangular positioning groove. After the adjustment is completed, the position of the eccentric shaft 31 is locked by the fixing assembly. Specifically, rotate the locking shaft 32 so that the active teeth 33 at its bottom engage with the locking teeth 37, thereby fixing the limit plate 36 and preventing the eccentric shaft 31 from rotating.

[0071] Next, place the steel bar to be bent between the two extrusions 4. Make sure one end of the steel bar is aligned and close to the sliding plate 41. At this time, start the wire motor 44, and its output end will pull the contraction wire 45, which in turn pulls the extrusions 4 closer to the center to clamp the steel bar.

[0072] After the rebar is clamped, the drive motor 5 is activated via the control panel. The output of the drive motor 5 rotates the driving gear 51, which in turn drives the driven gear 53 meshing with the driving gear 51 and the drive disc 2. The bending shaft 3 rotates along with the drive disc 2, beginning to bend the rebar. During the bending process, the rebar moves against the sliding plate 41, avoiding direct friction with the drive shaft 52 and extending the service life of the equipment.

[0073] When the steel bar is bent to the desired angle or shape, the control panel stops the drive motor 5. Then the wire motor 44 is turned off, and the spring pushes the extrusion member 4 to move to both sides, releasing the grip on the steel bar. At this point, the bent steel bar can be removed.

[0074] After the steel bar is removed, the return spring 43 will squeeze or pull the sliding block 42, causing the sliding plate 41 to return to its initial position. At the same time, if you choose to assist in bending the steel bar by cooperating with the linkage teeth 56 and the drive teeth 51, you need to lift the sliding ring 55 by pushing the component (such as the push cylinder 59) so that it loses connection with the lower rectangular bar 58 and allows the linkage teeth 56 to engage with the drive teeth 51. In this way, when the drive motor 5 drives the drive disk 2 to rotate, the drive shaft 52 will also rotate synchronously to assist in completing the bending of the steel bar. But please note that under normal circumstances, the slide groove on the sliding ring 55 is connected to the upper rectangular bar 57 and the lower rectangular bar 58 at the same time, and the linkage teeth 56 are not engaged with the drive teeth 51. At this time, the drive shaft 52 does not rotate.

[0075] The embodiments of this specific implementation method are all preferred embodiments of the present application and are not intended to limit the scope of protection of the application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A steel bar bending machine suitable for construction sites, characterized in that: The invention comprises a working case (1), wherein a driving disc (2) is rotatably provided in the middle of the upper end of the working case (1), a bending shaft (3) is provided on the driving disc (2), a circular hole is provided in the middle of the driving disc (2), a driving shaft (52) is provided in the circular hole, the bottom of the driving shaft (52) is connected to the bottom of the working case (1), a pair of extrusion members (4) for clamping the steel bars are installed on the upper end of the driving shaft (52), a sliding groove is provided on the side close to the pair of extrusion members (4), a sliding plate (41) is provided in the sliding groove, a sliding block (42) is fixedly provided on the sliding plate (41) and slides with the sliding groove, a resetting device for resetting the sliding block (42) is provided on both sides of the sliding block (42), and a driving component for starting the driving disc (2) is provided inside the working case (1).

2. A steel bar bending machine suitable for a construction site according to claim 1, characterized in that: The reset device comprises a reset spring (43) fixedly connected to both ends of the sliding block (42), both ends of the reset spring (43) are fixedly connected to both ends of the sliding groove, and a driving extrusion assembly mounted on the driving shaft (52) is provided at the bottom between the extrusion members (4).

3. A steel bar bending machine suitable for a construction site according to claim 2, characterized in that: The driving extrusion assembly comprises a rectangular groove opened at the upper end of the driving shaft (52); the bottom of the extrusion piece (4) is slidably connected to the rectangular groove; a steel wire motor (44) fixedly connected to the driving shaft (52) is provided in the middle of the rectangular groove; a pair of contraction steel wires (45) are fixedly provided on the output end of the steel wire motor (44); the other end of each contraction steel wire (45) is fixedly connected to the extrusion pieces (4) on both sides; and a push spring (48) is fixedly provided between the extrusion pieces (4).

4. A steel bar bending machine suitable for a construction site according to claim 3, characterized in that: A connecting shaft (46) is rotatably connected to one end of the rectangular slot away from the steel wire motor (44); a pair of auxiliary steel wires (47) are fixedly provided on the connecting shaft (46); the other ends of the pair of auxiliary steel wires (47) are fixedly connected to the extrusion pieces (4) on both sides; and the connecting shaft (46) is fixedly connected to the output end of the steel wire motor (44).

5. A steel bar bending machine suitable for a construction site according to claim 1, characterized in that: The drive assembly comprises a drive motor (5) fixedly connected to the inside of a working chassis (1); a drive tooth (51) is fixedly provided on the output end of the drive motor (5); and a circle of driven teeth (53) meshing with the drive tooth (51) is fixedly connected to the bottom of the drive disc (2).

6. A steel bar bending machine suitable for a construction site according to claim 5, characterized in that: The bottom of the driving shaft (52) is provided with a fixed shaft (54) fixedly connected to the bottom of the working chassis (1), and a plurality of groups of lower rectangular bars (58) are fixedly provided on the fixed shaft (54). An upper rectangular bar (57) having the same structure as the lower rectangular bar (58) is fixedly provided on the bottom of the driving shaft (52). A sliding ring (55) is provided on the fixed shaft (54), and a plurality of groups of sliding grooves matching the lower rectangular bar (58) and the upper rectangular bar (57) are provided on the sliding ring (55). A circle of linkage teeth (56) is fixedly provided on the sliding ring (55), and the linkage teeth (56) can mesh with the driving teeth (51). A pushing component for pushing the sliding ring (55) to move upward is provided at the bottom of the sliding ring (55), and the driving shaft (52) and the driving disk (2) are rotationally connected.

7. A steel bar bending machine suitable for a construction site according to claim 6, characterized in that: The pushing assembly comprises a plurality of pushing cylinders (59) fixedly connected to the bottom of the working chassis (1); a circle of pushing grooves is provided at the bottom of the sliding ring (55); and the output end of the pushing cylinder (59) is slidably connected to the pushing groove.

8. A steel bar bending machine suitable for a construction site according to claim 1, characterized in that: An eccentric circular shaft (31) is provided on the outside of the bending shaft (3), a through slot is provided on the non-center portion of the eccentric circular shaft (31), a plurality of rectangular positioning slots are provided on the sidewall of the through slot, a plurality of placement slots are provided on the outside of the bending shaft (3), a limiting spring (35) is provided on the placement slot, a limiting plate (36) is fixedly provided at the end of the limiting spring (35), the end of the limiting plate (36) is triangular, and a fixing component is provided in the middle of the bending shaft (3).

9. A steel bar bending machine suitable for a construction site according to claim 8, characterized in that: The fixing assembly includes a central groove opened in the middle of the bending shaft (3); a rotating plate (34) is fixedly provided on one end of the limit spring (35) away from the limit plate (36); a driving rod is fixedly provided on the rotating plate (34); the driving rod extends into the central groove and is rotatably connected to the bending shaft (3); a locking tooth (37) is fixedly connected to the end of the driving rod; a locking shaft (32) is rotatably provided in the central groove; and an active tooth (33) meshing with the locking tooth (37) is provided at the bottom of the locking shaft (32).

10. A method for using a steel bar bending machine suitable for a construction site, applied to the steel bar bending machine suitable for a construction site according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. According to the diameter of the steel bar to be bent and the required bending radius, the eccentric shaft (31) is rotated to a suitable position. When the eccentric shaft (31) is rotated, it is ensured that the limit plate (36) can be smoothly rotated and snapped into the rectangular positioning groove; S2, rotating the locking shaft (32) to engage the active teeth (33) with the locking teeth (37), thereby fixing the position of the eccentric shaft (31) to prevent it from moving during operation; S3. Place the steel bar to be bent between the two extrusion members (4), ensuring that one end of the steel bar is aligned and close to the sliding plate (41); S4. Start the steel wire motor (44) through the control panel. The output end of the steel wire motor (44) will pull the contraction steel wire (45), thereby pulling the extrusion member (4) toward the center to clamp the steel bar; S5. The driving motor (5) is started through the control panel. The output end of the driving motor (5) drives the driving gear (51) to rotate, thereby driving the driven gear (53) meshed with the driving gear (51) and the driving disc (2) to rotate; S6. When the steel bar is bent to the desired angle or shape, the driving motor (5) is stopped through the control panel, the wire motor (44) is turned off, and the spring pushes the extrusion member (4) to move to both sides, releasing the clamping of the steel bar. At this time, the bent steel bar can be removed; S7. After the steel bar is removed, the return spring (43) squeezes or pulls the sliding block (42) to return the sliding plate (41) to its initial position.

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