Automatic steel bar binding device

Abstract

The utility model discloses a kind of automatic steel bar bundling equipment, belong to a kind of automatic steel bar bundling equipment field.It includes crossbeam, and the crossbeam is equipped with bundling device and wire feeding device for conveying steel wire to bundling device, and one walking mechanism and one supporting mechanism are respectively arranged on the two sides of the crossbeam.The utility model not only can be moved along steel bar track to carry out the bundling of steel bar intersection, but also can be displaced to other steel bar track transversely, so as to realize the automatic bundling of steel bar intersection on multiple steel bar tracks, improve the degree of automation and work efficiency of equipment.

Description

Technical Field

[0001] This utility model belongs to the field of rebar tying, and more specifically, relates to an automatic rebar tying device. Background Technology

[0002] In reinforced concrete construction, it is common practice to tie reinforcing bars at intersections and other locations to secure and fix the reinforcing bar cage. Currently, manual tying of reinforcing bars is still the most prevalent method on construction sites. When tying reinforcing bars manually, ordinary galvanized steel wire is typically used with manual binding tools to secure the reinforcing bars at the points where fixation is needed. However, manual tying of reinforcing bars inevitably presents the following problems: inconvenient operation, low tying efficiency, time-consuming tying process, and increased risk of hand injury. In particular, the operator's wrists are prone to soreness when repeatedly tightening the wire.

[0003] In the prior art, to overcome the various problems of manual binding methods, fully automatic rebar binding machines have emerged. For example, Chinese patent application number CN201821803142.1, published on July 30, 2019, discloses a rebar binding machine, which includes: a housing; a working head for twisting steel wires, including a body portion extending out of the housing along a first extending direction, and a working portion disposed at one end of the body portion away from the housing; the working portion has a second extending direction different from the first extending direction, and the body portion defines a first axis along the first extending direction; a power mechanism for driving the working head to rotate around the first axis; a signal acquisition unit for acquiring a signal indicating the twisting state of the steel wires; and a control unit electrically connected to the power mechanism and the signal acquisition unit, for controlling the working head to stop rotating when the signal acquisition unit acquires a signal indicating that the twisting of the steel wires is complete.

[0004] The rebar tying machine provided by this utility model can tie the rebars at intersections, but it still requires manual operation of the equipment and cannot achieve automated rebar tying.

[0005] Chinese patent application number CN202480006215.6, published on August 5, 2025, discloses a rebar tying robot, comprising: a rebar tying unit configured to tie the intersection of a first rebar and a second rebar in a rebar group, the rebar group including a plurality of first rebars extending in a first direction and a plurality of second rebars extending in a second direction intersecting the first direction and arranged in a manner intersecting the first rebars; a traveling unit configured to travel on the first rebars and / or the second rebars; a first sensor and a second sensor configured to detect at least one first rebar and / or at least one second rebar, the first sensor and the second sensor being arranged apart from each other along a third direction; and a third sensor and a fourth sensor configured to detect at least one first rebar and / or at least one second rebar, the third sensor and the fourth sensor being arranged apart from each other along a fourth direction intersecting the third direction.

[0006] This solution enables the equipment to move and tie on steel bars automatically by setting up a traveling unit and multiple sensors. However, the equipment travels on a fixed track and can only tie the intersection of a maximum of two steel bars on the track at a time, which affects its work efficiency. Summary of the Invention

[0007] 1. The problem to be solved To address the problem that existing automated rebar tying equipment cannot tie the intersections of rebars on multiple rebar tracks at once, this utility model provides an automated rebar tying device that can not only move along the rebar tracks to tie the intersections of rebars, but also move laterally to other rebar tracks, thereby realizing automated tying of the intersections of rebars on multiple rebar tracks, improving the automation level and work efficiency of the equipment.

[0008] 2. Technical Solution To solve the above problems, the present invention adopts the following technical solution.

[0009] An automatic rebar tying device includes a crossbeam, on which a tying device and a wire feeding device for feeding steel wire to the tying device are installed. A traveling mechanism and a support mechanism are respectively provided on both sides of the crossbeam. The traveling mechanism includes a guide rail, a sliding frame, a support, a roller frame, rollers, a lateral drive mechanism, a connecting support, and a rotary motor. The guide rail is fixedly mounted on the crossbeam, and the sliding frame is slidably mounted on the guide rail and moves along the guide rail under the control of the lateral drive mechanism. The rollers are rotatably mounted on the roller frame, and one end of the connecting support is hinged to the sliding frame, while the other end is fixedly connected to the roller frame. The rotary motor is fixedly mounted on the roller frame, and its output shaft is drively connected to the connecting support. The support mechanism is mounted on the crossbeam and located outside the traveling mechanism, with its bottom extending downwards.

[0010] As a further improvement to the technical solution, the sliding frame is rotatably mounted with a rotating shaft, the end of the connecting bracket is fixedly connected to the rotating shaft, and springs with their two ends fixedly connected to the rotating shaft are sleeved on the rotating shaft.

[0011] As a further improvement to the technical solution, a connecting bracket is connected to each end of the sliding frame and the roller frame.

[0012] As a further improvement to the technical solution, a connecting rod is also included, with a sliding frame and a roller frame respectively hinged at both ends of the connecting rod.

[0013] As a further improvement to the technical solution, a sliding bracket is installed at each end of the guide rail.

[0014] As a further improvement to the technical solution, a lifting device is also included; a slide rail extending along the height direction is provided on the outer side of the binding device, and a slider that is slidably installed on the slide rail is mounted on the crossbeam; the lifting device is installed on the crossbeam or the binding device to control the binding device to rise and fall along the slide rail.

[0015] As a further improvement to the technical solution, the lifting device is any one of a cylinder, a hydraulic cylinder, an electric push rod, a lead screw lifting mechanism, and a gear and rack lifting mechanism.

[0016] As a further improvement to the technical solution, the lateral drive mechanism includes a lateral drive motor, a gear, and a rack. The rack is horizontally mounted on the sliding frame, and the lateral drive motor is fixedly mounted on the guide rail. Its output shaft is connected to the gear, and the gear matches the rack.

[0017] As a further improvement to the technical solution, the side of the support mechanism is an arc-shaped structure, and the bottom surface is a horizontal structure.

[0018] As a further improvement to the technical solution, a protective frame is fixedly installed on the upper side of the crossbeam.

[0019] 3. Beneficial effects Compared with the prior art, the beneficial effects of this utility model are as follows: (1) The present invention provides an automatic steel bar binding device. When it is necessary to change the steel bar track, the rotating motor can control the connecting bracket to rotate so that the crossbeam can be lowered, thereby driving the support mechanism to lower. When the support mechanism contacts the steel bar track, the roller frame will rise away from the steel bar track under the rotation of the connecting bracket. At this time, the horizontal drive mechanism can control the horizontal displacement of the sliding frame, thereby driving the roller frame and roller to move horizontally, so that the roller moves above another steel bar track. Then, the rotating motor controls the connecting bracket to rotate in the opposite direction, so that the roller can be lowered until it contacts another steel bar track and lifts the crossbeam, completing the conversion of the device between steel bar tracks. Then, the horizontal drive mechanism can work in the opposite direction to reset the relative position between the crossbeam and the sliding frame. In this way, the binding device can automatically bind the steel bars at the intersection of multiple steel bar tracks, improving the automation level and working efficiency of the binding device. (2) The present invention provides an automatic steel bar binding device, which sets a rotating shaft and a spring on the sliding frame. When the rotating shaft rotates, the spring will deform and generate a certain force. On the one hand, it can provide certain support assistance when the roller contacts the steel bar track for support movement, reducing the load on the rotating motor to maintain the rotating bracket at a certain angle. On the other hand, it can also compensate for the vibration of the roller during movement and ensure the working stability of the walking mechanism. (3) The present invention provides an automatic steel bar binding device with two connecting brackets, which makes the lifting and lowering of the rollers more stable, and the single guide rail is equipped with two sliding frames, which enables the two pairs of rollers to better support the device. (4) The present invention provides an automatic steel bar binding device, which, by setting a connecting rod, can limit the maximum rotation angle of the connecting bracket and ensure the stable operation of the walking mechanism; (5) The present invention provides an automatic steel bar binding device. The arc-shaped side of the support mechanism can provide sufficient clearance for the rotation and lifting of the connecting bracket and the roller, while the horizontal bottom can stably support the device when the steel bar track is changed. (6) The present invention provides an automatic steel bar binding device. The protective frame fixedly installed on the upper side of the crossbeam plays a protective role, preventing damage to the internal devices of the device from being hit by objects falling from a height. Attached Figure Description Figure 1 This is a structural schematic diagram of an automatic rebar tying device; Figure 2 This is a schematic diagram of the walking mechanism; Figure 3 This is a structural schematic diagram of the crossbeam; In the diagram: 1. Crossbeam; 2. Binding device; 21. Slide rail; 22. Slider; 3. Wire feeding device; 4. Traveling mechanism; 41. Guide rail; 42. Sliding frame; 43. Connecting rod; 44. Roller frame; 45. Roller; 46. Lateral drive mechanism; 47. Connecting bracket; 48. Rotating motor; 5. Support mechanism; 6. Protective frame. Detailed Implementation

[0020] Exemplary embodiments of the present invention are described in detail below. While these exemplary embodiments have been described in sufficient detail to enable those skilled in the art to practice the present invention, it should be understood that other embodiments may be implemented and various changes may be made to the present invention without departing from its spirit and scope. The more detailed description of embodiments of the present invention below is not intended to limit the scope of the claimed invention, but is merely illustrative and does not limit the description of the features and characteristics of the invention, in order to provide the best mode for carrying out the invention and sufficient to enable those skilled in the art to practice it. Therefore, the scope of the present invention is defined only by the appended claims.

[0021] Example 1 An automatic rebar tying device is disclosed, which is used to automatically tie the intersections of rebars. Its specific mechanism and technical effects are described in detail below.

[0022] like Figure 1 As shown, the equipment includes a crossbeam 1, on which a binding device 2 and a wire feeding device 3 for feeding steel wire to the binding device 2 are mounted. A traveling mechanism 4 and a support mechanism 5 are respectively provided on both sides of the crossbeam 1. A protective frame 6 is fixedly installed on the upper side of the crossbeam 1. The protective frame 6 serves a protective function, preventing damage to the internal components of the equipment from falling objects from heights. In this embodiment, the binding device 2 and the wire feeding device 3 are both commercially available rebar binding and wire feeding devices. Their structure and working principle are prior art known in the art, and therefore will not be described in detail.

[0023] like Figure 2 As shown, a slide rail 21 extending along the height direction is provided on the outer side of the binding device 2. A slider 22 is mounted on the crossbeam 1 and slidably installed with the slide rail 21. A lifting device is installed on the crossbeam 1 or the binding device 2. In this embodiment, the lifting device is installed on the binding device 2. The lifting device can control the binding device 2 to rise and fall along the slide rail 21. Any one of the following can be used: a cylinder, a hydraulic cylinder, an electric push rod, a screw lifting mechanism, or a gear and rack lifting mechanism. In this embodiment, a screw lifting mechanism is used. When it is necessary to bind the intersection of the reinforcing bars, the wire feeding device 3 feeds the wire to the binding device 2. Then, the lifting device is used to control the binding device 2 to descend to the intersection of the reinforcing bars for quick binding.

[0024] like Figure 3 As shown, the traveling mechanism 4 includes a guide rail 41, a sliding frame 42, a roller frame 44, rollers 45, a lateral drive mechanism 46, a connecting bracket 47, and a rotary motor 48. The guide rail 41 is fixedly mounted on the crossbeam 1, and the sliding frame 42 is slidably mounted on the guide rail 41, moving along the guide rail 41 controlled by the lateral drive mechanism 46. The rollers 45 are rotatably mounted on the roller frame 44. One end of the connecting bracket 47 is hinged to the sliding frame 42, and the other end is fixedly connected to the roller frame 44. The rotary motor 48 is fixedly mounted on the roller frame 44, and its output shaft is drively connected to the connecting bracket 47. The support mechanism 5 is mounted on the crossbeam 1 and located outside the traveling mechanism 4, with its bottom extending downwards. Specifically, the sides of the support mechanism 5 have an arc-shaped structure, and the bottom surface is a horizontal structure.

[0025] When it is necessary to switch rebar tracks, the rotating motor 48 controls the connecting bracket 47 to rotate, causing the crossbeam 1 to descend, which in turn drives the support mechanism 5 to descend. Once the support mechanism 5 contacts the rebar track, the roller frame 44 rises away from the rebar track due to the rotation of the connecting bracket 47. At this time, the horizontal drive mechanism 46 controls the horizontal displacement of the sliding frame 42, which in turn drives the roller frame 44 and rollers 45 to move horizontally, allowing the rollers 45 to move above another rebar track. Then, the rotating motor 48 controls the connecting bracket 47 to rotate in the opposite direction, causing the rollers 45 to descend until they contact the other rebar track and lift the crossbeam 1, completing the switch between rebar tracks. Finally, the horizontal drive mechanism 46 reverses its operation to reset the relative position between the crossbeam 1 and the sliding frame 42. In this way, the binding equipment can automatically bind rebars at intersections on multiple rebar tracks, improving the automation level and work efficiency of the binding equipment.

[0026] In this embodiment, the lateral drive mechanism 46 includes a lateral drive motor, a gear, and a rack. The rack is horizontally mounted on the sliding frame 42, and the lateral drive motor is fixedly mounted on the guide rail 41. Its output shaft is connected to the gear, which matches the rack. A connecting bracket 47 is connected to each end of the sliding frame 42 and the roller frame 44, making the lifting and lowering of the rollers more stable. A sliding frame 42 is mounted on each end of the guide rail 41, allowing the two pairs of rollers 45 to better support the equipment. Furthermore, a connecting rod 49 is included. The two ends of the connecting rod 49 are hinged to the sliding frame 42 and the roller frame 44, respectively, which limits the maximum rotation angle of the connecting bracket 47 and ensures the stable operation of the traveling mechanism.

[0027] It is worth mentioning that the sliding frame 42 is rotatably mounted with a rotating shaft, and the end of the connecting bracket 47 is fixedly connected to the rotating shaft. A spring with its two ends fixedly connected to the rotating shaft is sleeved on the rotating shaft. When the rotating shaft rotates, the spring deforms and generates a certain force. On the one hand, this provides some support when the roller 45 contacts the steel rail for support and movement, reducing the load on the rotating motor 48 to maintain the rotating bracket 47 at a certain angle. On the other hand, it also compensates for the vibration of the roller 45 during movement, ensuring the working stability of the traveling mechanism.

[0028] In summary, the automatic rebar tying device of this embodiment can not only move along the rebar track to tie the rebars at intersections, but also move laterally to other rebar tracks, thereby realizing the automatic tying of rebars at intersections on multiple rebar tracks, improving the automation level and work efficiency of the device.

Claims

1. An automatic rebar tying device, comprising a crossbeam (1), wherein a tying device (2) and a wire feeding device (3) for feeding steel wire to the tying device (2) are mounted on the crossbeam (1), characterized in that: A walking mechanism (4) and a support mechanism (5) are respectively provided on both sides of the crossbeam (1); The walking mechanism (4) includes a guide rail (41), a sliding frame (42), a roller frame (44), rollers (45), a transverse drive mechanism (46), a connecting bracket (47), and a rotary motor (48). The guide rail (41) is fixedly mounted on the crossbeam (1), and the sliding frame (42) is slidably mounted on the guide rail (41) and moves along the guide rail (41) by the transverse drive mechanism (46). The rollers (45) are rotatably mounted on the roller frame (44), and one end of the connecting bracket (47) is hinged to the sliding frame (42), while the other end is fixedly connected to the roller frame (44). The rotary motor (48) is fixedly mounted on the roller frame (44), and its output shaft is connected to the connecting bracket (47) in a transmission connection. The support mechanism (5) is mounted on the crossbeam (1) and located outside the walking mechanism (4), with its bottom extending downward.

2. The automatic rebar tying device according to claim 1, characterized in that: The sliding frame (42) is rotatably mounted with a rotating shaft, and the end of the connecting bracket (47) is fixedly connected to the rotating shaft. The rotating shaft is fitted with springs at both ends that are fixedly connected to the rotating shaft.

3. The automatic rebar tying device according to claim 2, characterized in that: The sliding frame (42) and the roller frame (44) are each connected to a connecting bracket (47) at both ends.

4. The automatic rebar tying device according to claim 3, characterized in that: It also includes a connecting rod (43), the two ends of which are respectively hinged to a sliding frame (42) and a roller frame (44).

5. The automatic rebar tying device according to claim 4, characterized in that: A sliding bracket (42) is installed at each end of the guide rail (41).

6. The automatic rebar tying device according to claim 1, characterized in that: It also includes a lifting device; the outer side of the binding device (2) is provided with a slide rail (21) extending along the height direction, and the crossbeam (1) is equipped with a slider (22) that is slidably installed with the slide rail (21); the lifting device is installed on the crossbeam (1) or the binding device (2) to control the binding device (2) to lift along the slide rail (21).

7. The automatic rebar tying device according to claim 6, characterized in that: The lifting device is any one of the following: pneumatic cylinder, hydraulic cylinder, electric push rod, screw lifting mechanism, and rack and pinion lifting mechanism.

8. An automatic rebar tying device according to any one of claims 1-7, characterized in that: The transverse drive mechanism (46) includes a transverse drive motor, a gear and a rack. The rack is horizontally mounted on the sliding frame (42). The transverse drive motor is fixedly mounted on the guide rail (41). Its output shaft is connected to the gear, and the gear matches the rack.

9. An automatic rebar tying device according to any one of claims 1-7, characterized in that: The side of the support mechanism (5) is an arc-shaped structure, and the bottom is a horizontal structure.

10. An automatic rebar tying device according to any one of claims 1-7, characterized in that: A protective frame (6) is fixedly installed on the upper side of the crossbeam (1).

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