A rotary disc bundling machine

Abstract

The application relates to the technical field of bundling equipment, and particularly discloses a rotary disc type bundling machine which comprises a rack and two groups of conveying devices symmetrically arranged on the rack, a gap is formed between the two groups of conveying devices, and the rotary disc center opening is used to realize the penetration of one group of conveying devices. The rotary disc is fixed with a connecting arm with an end-to-end alignment gap in the radial direction, the arm end is provided with a bundling material unwinding device, and a rotary driving device drives the rotary disc to drive the unwinding device to move in a circular track around the conveying device. A beak knotter located below the gap synchronously pulls the bundling material, the material is wound on the material surface across the conveying device through the gap, and a knotting and cutting action is completed. The application directly connects the production line equipment to form a continuous work station through the symmetrical conveying devices, realizes the full-process automation of material conveying, bundling winding and knotting cutting through the cooperative operation of the rotary disc dynamic unwinding and the beak knotter, significantly improves the bundling efficiency, and is especially suitable for continuous production requirements of assembly line operation.

Description

Technical Field

[0001] This application relates to the technical field of strapping equipment, and more specifically, to a rotary strapping machine. Background Technology

[0002] Strapping machines, widely used in packaging, logistics, and manufacturing, primarily function to secure and encapsulate products using strapping materials (such as plastic straps or metal wires). A typical strapping machine usually consists of three main modules: a support platform to hold the products to be strapped, a winding device that rotates around the support platform to wrap the strapping material, and a knotter to cut and secure the ends of the strapping material. The workflow is as follows: the operator manually places the product on the support platform; after starting the machine, the winding device moves the strapping material around the product to form a tight loop; and finally, the knotter completes the binding and securing.

[0003] However, with the acceleration of industrial automation and the increasing demand for continuous operation of production lines, the technical limitations of traditional strapping machines have become increasingly prominent. Specifically, the repeated manual loading and unloading of materials not only restricts work efficiency and increases labor costs, but also easily forms process bottlenecks in high-speed production scenarios, making it difficult to achieve seamless integration with front-end and back-end automated equipment (such as conveyor belts and robotic arms). Utility Model Content

[0004] To address the problem of traditional strapping machines being difficult to seamlessly integrate with front-end and back-end automated equipment, this application provides a rotary strapping machine.

[0005] A rotary strapping machine includes a frame with two sets of conveying devices symmetrically arranged on the frame, forming a gap between the two sets of conveying devices. A turntable is rotatably mounted on the frame, with an opening at the center of the turntable. One set of conveying devices passes through the opening. A connecting arm is radially fixed to the turntable, and the end of the connecting arm is aligned with the gap and has an unwinding device for unwinding strapping material fixed thereon. The frame also includes a bird's beak knotter and a rotary drive device. The rotary drive device is connected to the turntable to drive the turntable to rotate. The rotation of the turntable causes the unwinding device to move in a circular trajectory around the conveying devices. The bird's beak knotter is located below the gap to pull the unwinding material unwound by the unwinding device and to perform knotting and cutting actions on the strapping material.

[0006] Preferably, each set of conveying devices includes connecting bars, rotating rollers, and a belt drive mechanism. The number of connecting bars is two, and the two connecting bars are arranged laterally on opposite sides of the frame, and the two connecting bars are arranged in parallel and symmetrically. The number of rotating rollers is several, and the two ends of the several rotating rollers are rotatably connected to the two connecting bars respectively. The several rotating rollers are evenly arranged along the length direction of the connecting bars. The belt drive mechanism is located below the several rotating rollers, and the belt drive mechanism drives the several rotating rollers to rotate synchronously through the friction between the belt and the several rotating rollers.

[0007] Preferably, the belt drive mechanism includes a mounting plate, a first servo motor, a first pulley, a drive wheel, and a first transmission belt. The mounting plate is fixedly mounted on the frame. There are at least two first pulleys, which are rotatably mounted at both ends of the same side of the mounting plate and are arranged symmetrically and in parallel. The drive wheel is rotatably mounted below the two first pulleys and located between them. The first transmission belt is sleeved on the outer periphery of the two first pulleys and the drive wheel. A plurality of rollers are in contact with the first transmission belt. The first servo motor is fixed on the side of the mounting plate away from the drive wheel, and the drive shaft of the first servo motor passes through the mounting plate and is connected to the drive wheel.

[0008] Preferably, the frame is provided with a plurality of roller groups arranged in a circular array, and the outer peripheral edge of the turntable is recessed with an annular groove, and the plurality of roller groups are engaged in the annular groove to support the rotation of the turntable.

[0009] Preferably, the rotary drive device includes a second servo motor, a second pulley, and a second transmission belt. The second servo motor is disposed below the turntable. The second pulley is coaxially connected to the drive shaft of the second servo motor. The second transmission belt is sleeved on the outer periphery of the second pulley and the portion of the outer periphery of the turntable that avoids the annular groove. An annular protrusion is also provided on the other edge of the outer periphery of the turntable away from the annular groove. The second transmission belt is located between the annular protrusion and the roller assembly.

[0010] Preferably, the unwinding device includes a protective cylinder, an I-beam reel, and a guide block. The protective cylinder is fixed to the connecting arm, the I-beam reel is disposed inside the protective cylinder and rotatably connected to the protective cylinder, the binding material is wound around the I-beam reel, the protective cylinder is provided with a through hole communicating with the interior for the binding material to pass through, the guide block is disposed on the outer wall of the protective cylinder, and the guide block has a through hole, the binding material passes through the through hole and is connected to the bird beak knotter.

[0011] The beneficial technical effects of this application are as follows: The material to be bundled is conveyed through two sets of conveying devices. When the material to be bundled crosses the two sets of conveying devices, the turntable rotates and drives the unwinding device to move around the conveying devices in a circular trajectory. The unwinding device unwinds the bundling material in a circular trajectory, and the bundling material is pulled by the bird beak knotter, so that the bundling material passes through the gap between the two sets of conveying devices and avoids being wrapped around the material to be bundled. The bundling material is then knotted and cut by the bird beak knotter to complete the bundling of the material to be bundled. The symmetrical conveying device can be directly connected to the front and rear conveyor belts, robotic arms and other equipment to form a fully automatic bundling workstation, supporting continuous production rhythm and improving production efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a rotary strapping machine according to this embodiment.

[0013] Figure 2 This is a schematic diagram of the belt drive mechanism in this embodiment.

[0014] Figure 3 This is a schematic diagram of the turntable in this embodiment.

[0015] Figure 4 This is a schematic diagram of the unwinding device in this embodiment.

[0016] Figure 5 This is a cross-sectional view of the unwinding device in this embodiment.

[0017] Reference numerals: 1. Frame; 11. Roller assembly; 2. Conveying device; 21. Connecting bar; 22. Rotary roller; 23. Belt drive mechanism; 231. Mounting plate; 232. First servo motor; 233. First pulley; 234. Drive wheel; 235. First transmission belt; 3. Turntable; 31. Opening; 32. Annular groove; 33. Annular protrusion; 4. Connecting arm; 5. Unwinding device; 51. Protective cylinder; 511. Perforation; 52. I-beam wheel; 53. Wire block; 531. Through hole; 6. Bird beak knotter; 7. Rotary drive device; 71. Second servo motor; 72. Second pulley; 73. Second transmission belt. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] Reference Figure 1A rotary strapping machine includes a frame 1, on which two sets of conveying devices 2 are symmetrically arranged, with a gap between the two sets of conveying devices 2. A turntable 3 is rotatably arranged on the frame 1, with an opening 31 at the center of the turntable 3. One set of conveying devices 2 passes through the opening 31. A connecting arm 4 is radially fixed to the turntable 3. The end of the connecting arm 4 is aligned with the gap and a unwinding device 5 for unwinding the strapping material is fixed on it. The frame 1 is also equipped with a bird's beak knotter 6 and a rotary drive device 7. The rotary drive device 7 is connected to the turntable 3 to drive the turntable 3 to rotate. The rotation of the turntable 3 causes the unwinding device 5 to move in a circular trajectory around the conveying device 2. The bird's beak knotter 6 is located below the gap to pull the unwinding device 5 and to perform knotting and cutting actions on the strapping material. In the above structure, the material to be bundled is conveyed by two sets of conveying devices 2. When the material to be bundled crosses the two sets of conveying devices 2, the turntable 3 rotates and drives the unwinding device 5 to move around the conveying device 2 in a circular trajectory. The unwinding device 5 unwinds the bundling material in a circular trajectory, and the bundling material is pulled by the bird beak knotter 6, so that the bundling material avoids the gap between the two sets of conveying devices 2 and wraps around the material to be bundled. The bundling material is then knotted and cut by the bird beak knotter 6 to complete the bundling of the material to be bundled. The symmetrical conveying device 2 can be directly connected to the front and rear conveyor belts, robotic arms and other equipment to form a fully automatic bundling workstation, support continuous production rhythm and improve production efficiency.

[0020] The bird-beak knotter 6 includes a knotting nozzle, a rope clamp, a twisting mechanism, a cutter, and a cam drive structure. The knotting nozzle is used to clamp and guide the binding material to complete the winding and knotting actions. The rope clamp is located near the knotting nozzle and is used to fix one end of the binding material so that the movement of the water unwinding device 5 can pull the binding material when it is unwound. The twisting mechanism includes a rotating shaft or gear set, which drives the knotting nozzle to rotate through mechanical power to form a knot. The cutter is used to cut off the excess binding material after knotting and to separate the rope segments after knotting. The cam drive structure is used to drive the coordinated operation of each component. The bird-beak knotter 6 is known technology and will not be described in detail in this application.

[0021] Reference Figure 1Furthermore, each conveying device 2 includes connecting bars 21, rotating rollers 22, and a belt drive mechanism 23. There are two connecting bars 21 arranged laterally on opposite sides of the frame 1, and they are parallel and symmetrically arranged. There are several rotating rollers 22, with each roller 22 rotatably connected to two connecting bars 21 at both ends. The rollers 22 are evenly distributed along the length of the connecting bars 21. The belt drive mechanism 23 is located below the rollers 22, driving them to rotate synchronously through friction between the belt and the rollers 22. In this structure, the evenly distributed rollers 22 form a conveying plane, ensuring smooth material movement and preventing deviation or jamming. The belt drive mechanism 23, located below the rollers 22, drives them to rotate through friction between the belt and the rollers, replacing the traditional method of setting sprockets on each roller 22 and connecting them with chains. This results in a higher effective utilization of the roller length and facilitates a reduction in equipment size.

[0022] Reference Figure 1 and Figure 2 Specifically, the belt drive mechanism 23 includes a mounting plate 231, a first servo motor 232, a first pulley 233, a drive wheel 234, and a first transmission belt 235. The mounting plate 231 is fixedly mounted on the frame 1. There are at least two first pulleys 233, which are rotatably mounted at both ends of the same side of the mounting plate 231 and are arranged symmetrically and parallel to each other. The drive wheel 234 is rotatably mounted below the two first pulleys 233 and located between the two first pulleys 233. The first transmission belt 235 (not shown in the figure) (As shown) It is sleeved on the outer periphery of the two first pulleys 233 and the drive wheel 234. Several rotating rollers 22 are in contact with the first transmission belt 235. The first servo motor 232 is fixed on the side of the mounting plate 231 away from the drive wheel 234 and the drive shaft of the first servo motor 232 passes through the mounting plate 231 and is connected to the drive wheel 234. The first transmission belt 235 is driven to rotate by the first servo motor 232 to realize the transmission of the drive wheel 235. During the transmission process, the first transmission belt 235 makes frictional contact with several rotating rollers 22 to realize the rotation of the rotating rollers 22 by friction.

[0023] Reference Figure 1 and Figure 3Furthermore, the frame 1 is provided with several roller groups 11 arranged in a circular array, and the outer peripheral edge of the turntable 3 is recessed with an annular groove 32. The roller groups 11 are all inserted into the annular groove 32 to support the rotation of the turntable 3. The turntable 3 is rotatably connected to the frame 1 by the rotational support of the turntable 3 by the roller groups 11. The roller groups 11 cooperate with the annular groove 32 to evenly distribute the gravity of the turntable 3 to the frame 1, reduce rotational resistance, and make the turntable 3 rotate smoothly. The annular groove 32 restricts the radial offset of the turntable 3, ensures the accuracy of the rotation trajectory of the turntable 3, and prevents the unwinding device 5 from deviating from the predetermined path.

[0024] Reference Figure 1 and Figure 3 Furthermore, the rotary drive device 7 includes a second servo motor 71, a second pulley 72, and a second transmission belt 73. The second servo motor 71 is located below the turntable 3. The second pulley 72 is coaxially connected to the drive shaft of the second servo motor 71. The second transmission belt 73 is sleeved on the outer periphery of the second pulley 72 and the portion of the outer periphery of the turntable 3 that avoids the annular groove 32. An annular protrusion 33 is also provided on the other edge of the outer periphery of the turntable 3 away from the annular groove 32. The second transmission belt 73 is located between the annular protrusion 33 and the roller assembly 11. The second servo motor 71 drives the second pulley 72 to rotate, and the second pulley 72 drives the second transmission belt 73 to rotate. The rotation of the turntable 3 is achieved through the transmission friction of the second transmission belt 73. The annular protrusion 33 and the roller assembly 11 together constrain the second transmission belt 73 to prevent the belt from coming off during high-speed rotation and ensure transmission reliability.

[0025] Reference Figure 1 , Figure 4 and Figure 5 Furthermore, the unwinding device 5 includes a protective cylinder 51, an I-beam wheel 52, and a guide block 53. The protective cylinder 51 is fixed to the connecting arm 4. The I-beam wheel 52 is located inside the protective cylinder 51 and is rotatably connected to the protective cylinder 51. The binding material is wound around the I-beam wheel 52. The protective cylinder 51 is provided with a through hole 511 that communicates with the interior for the binding material to pass through. The guide block 53 is located on the outer wall of the protective cylinder 51 and has a through hole 531. The binding material passes through the through hole 31 and is connected to the bird's beak knotter 6. In the above structure, the I-beam wheel 52 releases the binding material as the turntable 3 rotates. The protective cylinder 51 protects the material from external interference. The through hole 531 of the guide block 53 guides the binding material in a directional manner to ensure that the material path is aligned with the bird's beak knotter 6 and to avoid tangling.

[0026] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotary strapping machine, characterized in that: The device includes a frame on which two sets of conveying devices are symmetrically arranged, with a gap between the two sets of conveying devices. A turntable is rotatably mounted on the frame, with an opening at its center. One set of conveying devices passes through the opening. A connecting arm is radially fixed to the turntable, and the end of the connecting arm is aligned with the gap and fixed to it with an unwinding device for unwinding bundled material. The frame also includes a bird's beak knotter and a rotary drive device. The rotary drive device is connected to the turntable to drive it to rotate. The rotation of the turntable causes the unwinding device to move in a circular trajectory around the conveying devices. The bird's beak knotter is located below the gap to pull the unwinding device and to perform knotting and cutting actions on the bundled material.

2. The rotary strapping machine according to claim 1, characterized in that: Each conveying device includes connecting bars, rotating rollers, and a belt drive mechanism. There are two connecting bars, which are arranged laterally on opposite sides of the frame and are parallel and symmetrical. There are several rotating rollers, and the two ends of each rotating roller are rotatably connected to two connecting bars. The rotating rollers are evenly arranged along the length of the connecting bars. The belt drive mechanism is located below the rotating rollers and drives the rotating rollers to rotate synchronously through friction between the belt and the rotating rollers.

3. A rotary strapping machine according to claim 2, characterized in that: The belt drive mechanism includes a mounting plate, a first servo motor, a first pulley, a drive wheel, and a first transmission belt. The mounting plate is fixedly mounted on the frame. There are at least two first pulleys, which are rotatably mounted at both ends of the same side of the mounting plate and are arranged symmetrically and in parallel. The drive wheel is rotatably mounted below the two first pulleys and between them. The first transmission belt is sleeved on the outer periphery of the two first pulleys and the drive wheel. Several rollers are in contact with the first transmission belt. The first servo motor is fixed on the side of the mounting plate away from the drive wheel, and the drive shaft of the first servo motor passes through the mounting plate and is connected to the drive wheel.

4. A rotary strapping machine according to claim 1, characterized in that: The frame is provided with several roller groups arranged in a circular array. The outer peripheral edge of the turntable is recessed with an annular groove, and the roller groups are all inserted into the annular groove to support the rotation of the turntable.

5. A rotary strapping machine according to claim 4, characterized in that: The rotary drive device includes a second servo motor, a second pulley, and a second transmission belt. The second servo motor is located below the turntable. The second pulley is coaxially connected to the drive shaft of the second servo motor. The second transmission belt is sleeved on the outer periphery of the second pulley and the portion of the outer periphery of the turntable that avoids the annular groove. An annular protrusion is also provided on the other edge of the outer periphery of the turntable away from the annular groove. The second transmission belt is located between the annular protrusion and the roller assembly.

6. A rotary strapping machine according to claim 1, characterized in that: The unwinding device includes a protective cylinder, an I-beam reel, and a guide block. The protective cylinder is fixed to the connecting arm. The I-beam reel is disposed inside the protective cylinder and rotatably connected to the protective cylinder. The binding material is wound around the I-beam reel. The protective cylinder has a through hole communicating with the interior for the binding material to pass through. The guide block is disposed on the outer wall of the protective cylinder and has a through hole. The binding material passes through the through hole and is connected to the bird beak knotter.

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