Automatic carton board bundling machine

Abstract

The application discloses a kind of automatic paper box board bundling machines, belong to packaging machinery technical field.The bundling machine includes rack, and is installed on the bundling device, conveying device and whole material device of rack.Conveying device is by three parallel roller shaft conveying line and its synchronous driving mechanism composition, output all are connected with bundling device.Adjacent roller shaft conveying line is equipped with first gap, and second gap is equipped between middle roller shaft conveying line and bundling device.Whole material device is arranged at the output of roller shaft conveying line, includes upper pressing mechanism, front blocking mechanism, rear pushing mechanism and side pressing mechanism, and the application is by upper pressing mechanism, front blocking mechanism, rear pushing mechanism and side pressing mechanism to paper box board five sides and aligns whole material, strongly corrects paper box board stack misplacement, ensures that stack is neat and compact before bundling, significantly improves the restraint effect of bundling tape or winding film, so that the paper box board stack is firmly fastened after bundling, not easy to loosen, reach high-quality bundling standard.

Description

Technical Field

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

[0002] In the production, warehousing, and transportation of cardboard boxes, it is often necessary to stack a certain number of cardboard boxes neatly and then bundle them together to improve handling efficiency, protect products, and save space. Currently, automatic strapping machines are widely used due to their high efficiency. These machines typically consist of a roller conveyor line and a strapping mechanism. The workflow is as follows: several stacked cardboard boxes are placed at the beginning of the roller conveyor line and transported by the rotation of the rollers to the strapping station of the strapping mechanism at the end of the conveyor line. The strapping mechanism then performs the strapping operation on the stacked boxes.

[0003] However, existing automatic strapping machines based on roller conveyor lines have a significant drawback in practical applications: during the conveying process, especially when the conveyor line starts, stops, or accelerates / decelerates, the upper cardboard boards are prone to displacement, tilting, or even scattering relative to the lower cardboard boards due to inertia, roller vibration, or changes in the coefficient of friction between them, resulting in a "misalignment" phenomenon. This misalignment can accumulate and worsen during the conveying process. When the misaligned cardboard stacks are directly fed into the strapping station for strapping, the strapping tape or stretch film cannot effectively restrain the already misaligned cardboard boards, resulting in loose and unsecured stacks that fail to meet strapping quality standards. Utility Model Content

[0004] To address the problem that traditional automatic strapping machines, which use roller conveyors to transport stacked cardboard boxes, often experience misalignment during transport, resulting in failure to meet strapping quality standards, this application provides an automatic cardboard box strapping machine.

[0005] An automatic cardboard strapping machine includes a frame on which a strapping device, a conveying device, and a balancing device are mounted. The conveying device includes three parallel roller conveyor lines and a conveying drive mechanism that drives the three roller conveyor lines to operate synchronously. The output ends of the three roller conveyor lines are all connected to the strapping device. A first gap exists between adjacent roller conveyor lines, and a second gap exists between the middle roller conveyor line and the strapping device. The balancing device is located at the output end of the roller conveyor lines and includes an upper pressing mechanism, a front blocking mechanism, a rear pushing mechanism, and a side pressing mechanism. The upper pressing mechanism is located above the middle roller conveyor line and includes a rolling assembly and a first lifting drive assembly that drives the rolling assembly to move up and down. The front blocking mechanism includes a baffle located within the second gap. The system includes a second lifting drive assembly for driving the baffle to rise and fall, and two rear push mechanisms, each located in one of the two first gaps. Each rear push mechanism includes a lateral drive assembly, a third lifting drive assembly, and a rear push plate. The lateral drive assembly is connected to the third lifting drive assembly to drive the third lifting drive assembly to reciprocate along the length of the roller conveyor line. The third lifting drive assembly is connected to the rear push plate to drive the rear push plate to rise and fall. The system also includes two side pressure mechanisms, both located above the roller conveyor line and on opposite sides of the front baffle mechanism. Each side pressure mechanism includes a side pressure plate and a side pressure drive assembly that drives the side pressure plate to move away from or towards the front baffle mechanism.

[0006] Preferably, each roller conveyor line includes a mounting frame and a plurality of rollers evenly arranged along the length of the mounting frame. The plurality of rollers are rotatably connected to the mounting frame. Each mounting frame is also rotatably mounted with a plurality of pulleys. The plurality of pulleys are evenly arranged along the length of the mounting frame and located below the rollers. A belt is commonly fitted onto the plurality of pulleys. The bottoms of the plurality of rollers are in frictional contact with the belt. Each mounting frame is also rotatably mounted with a pressure roller, which is located below the pulleys and presses down on the belt. The conveying device includes a drive shaft rotatably mounted on the frame, three drive wheels mounted on the drive shaft, three driven wheels respectively connected to the three pressure rollers, and a first servo motor with its output end connected to the drive shaft. The three drive wheels and the three driven wheels are aligned one-to-one, and a transmission belt is fitted onto a pair of drive wheels and driven wheels that are aligned opposite each other.

[0007] Preferably, the first lifting drive assembly includes a support frame and a first cylinder. The support frame is connected and fixed to the machine frame. The first cylinder is vertically fixed to the support frame with its telescopic shaft facing downwards. The rolling assembly includes a mounting rod and rollers. The length extension direction of the mounting rod is consistent with the length direction of the roller conveyor line. There are several rollers, all of which are rotatably mounted on the mounting rod and evenly arranged along the length direction of the mounting rod. The telescopic shaft of the first cylinder is connected and fixed to the mounting rod.

[0008] Preferably, the second lifting drive assembly includes a mounting plate and a second cylinder. The mounting plate is vertically fixed to the frame, and the second cylinder is vertically fixed to the mounting plate. The drive shaft of the second cylinder is arranged upward. The top of the baffle is connected and fixed to the drive shaft of the second cylinder. The baffle is located between the second cylinder and the roller conveyor line.

[0009] Preferably, the lateral drive assembly includes a slide, a drive sprocket, a driven sprocket, a chain, and a second servo motor. The slide is laterally disposed in the second gap and fixed to the mounting bracket on the outer side, with its length direction consistent with the length direction of the roller conveyor line. The third lifting drive assembly is slidably connected to the slide to achieve reciprocating sliding along the length direction of the slide. The second servo motor is located at one end of the slide and fixed to the mounting bracket. The drive sprocket is disposed on the drive shaft of the second servo motor. The driven sprocket is located at the end of the slide away from the second servo motor and is rotatably connected to the mounting bracket. The chain is sleeved on the driven sprocket and the drive sprocket.

[0010] Preferably, the third lifting drive assembly includes a support base and a third cylinder. The support base is slidably connected to the slide block, the third cylinder is fixed on the support base with its telescopic shaft facing upward, and the top end of the rear push plate is fixedly connected to the telescopic shaft of the third cylinder.

[0011] Preferably, the side pressure drive assembly includes a connecting frame and a fourth cylinder. The fourth cylinder is horizontally disposed on the connecting frame, and the telescopic shaft of the fourth cylinder faces the front stop mechanism. The side pressure plate is connected to the drive shaft of the fourth cylinder.

[0012] Preferably, the frame is further provided with a spacing adjustment mechanism, which includes two lead screws and two third servo motors. The two third servo motors are respectively connected to the two lead screws to drive the lead screws to rotate. The two lead screws are arranged laterally and their length direction is perpendicular to the length direction of the roller conveyor line. The two side pressure drive components are respectively threaded to the two lead screws and move back and forth along the length direction of the lead screws by rotating the lead screws.

[0013] The beneficial effects of this application are as follows: A material straightening device is integrated at the end of the conveying device and before the strapping device. The material straightening device, through the cooperation of the upper pressing mechanism, the front blocking mechanism, the rear pushing mechanism, and the side pressing mechanism, presses the carton boards neatly on the top, front, rear, left, and right sides of the carton board. This achieves strong correction of any slight misalignment that may exist before the strapping action. This allows the subsequent strapping tape or stretch film to most effectively restrain all the carton boards. The strapped carton boards are firm, tight, and not easy to loosen, significantly improving the strapping quality and meeting the strapping quality standards. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an automatic cardboard strapping machine according to this embodiment.

[0015] Figure 2 This is a schematic diagram of the roller conveyor line in this embodiment.

[0016] Figure 3 This is a schematic diagram of the conveying drive mechanism in this embodiment.

[0017] Figure 4 This is a schematic diagram of the upper pressure mechanism in this embodiment.

[0018] Figure 5 This is a schematic diagram of the front windshield mechanism in this embodiment.

[0019] Figure 6 This is a schematic diagram of the push mechanism in this embodiment.

[0020] Figure 7 This is a schematic diagram of the two sets of side pressure mechanisms and spacing adjustment mechanisms in this embodiment.

[0021] Reference numerals: 1. Frame; 2. Bundling device; 3. Roller conveyor line; 31. Mounting frame; 32. Roller; 33. Pulley; 34. Pressure roller; 4. Conveying drive mechanism; 41. Drive shaft; 42. Driven wheel; 43. First servo motor; 5. Pressing mechanism; 51. Rolling assembly; 511. Mounting rod; 512. Roller; 52. First lifting drive assembly; 521. Support frame; 522. First cylinder; 6. Front stop mechanism; 61. Baffle; 62. Second lifting drive assembly; 62 1. Mounting plate; 622. Second cylinder; 7. Push mechanism; 71. Lateral drive assembly; 711. Slide; 712. Drive sprocket; 713. Driven sprocket; 714. Second servo motor; 72. Third lifting drive assembly; 721. Support base; 722. Third cylinder; 73. Push plate; 8. Side pressing mechanism; 81. Side pressing plate; 82. Side pressing drive assembly; 821. Connecting frame; 822. Fourth cylinder; 9. Spacing adjustment mechanism; 91. Lead screw; 92. Third servo motor. Detailed Implementation

[0022] 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.

[0023] Reference Figure 1 An automatic cardboard strapping machine is disclosed, which is used to solve the problem of insecure strapping caused by misalignment of cardboard during transportation. The equipment includes a frame 1, on which a strapping device 2, a conveying device, and a material straightening device are installed.

[0024] The strapping device 2 is a conventional structure in the prior art, fixedly installed at the end of the frame 1, and mainly includes a head, a tape feeding mechanism, a tensioning mechanism, and a cutting and bonding mechanism. Its working process is as follows: the head guides the strapping tape around the cardboard stack, and after tensioning, cuts the tape and bonds the end of the tape to fix it.

[0025] Reference Figure 1-3The conveying device includes three parallel roller conveyor lines 3 and a conveying drive mechanism 4 that drives the three roller conveyor lines 3 to operate synchronously. The output ends of the three roller conveyor lines 3 are all connected to the inlet end of the strapping device 2. A first gap is formed between two adjacent roller conveyor lines 3, and a second gap is formed between the middle roller conveyor line 3 and the inlet of the strapping device 2. Each roller conveyor line 3 consists of a mounting frame 31 and several rollers 32 evenly arranged along the length of the mounting frame 31. The rollers 32 are rotatably mounted on the mounting frame 31. The mounting frame 31 is also rotatably mounted with several pulleys 33 evenly arranged along its length. These pulleys 33 are located below the rollers 32 and are linked by a belt. The bottom of each roller 32 maintains frictional contact with the surface of the belt. Through frictional contact, the belt drives the roller 32 to rotate, and the rotation of the roller 32 drives the carton boards placed on the roller 32 to move. Each mounting bracket 31 is also equipped with a pressure roller 34, which is located below the pulley 33 and applies downward pressure to the belt, thus tensioning the belt and facilitating belt drive. The conveying drive mechanism 4 includes a drive shaft 41 rotatably mounted on the frame 1, three drive wheels fixedly mounted on the drive shaft 41, three driven wheels 42 respectively connected to the rotating shafts of the three pressure rollers 34, and a first servo motor 43 with its output end connected to the drive shaft 41. The three drive wheels and the three driven wheels 42 are arranged in a one-to-one correspondence, and a transmission belt is sleeved between each pair of drive wheels and driven wheels 42 to achieve power transmission. When the first servo motor 43 drives the drive shaft 41 to rotate, the three pressure rollers 34 are driven to rotate synchronously through the cooperation of the drive wheels, transmission belt, and driven wheels 42, thereby realizing belt drive, and all rollers 32 are driven to rotate synchronously through belt friction.

[0026] Reference Figure 1 The material straightening device is located at the output end of the roller conveyor line 3. The material straightening device consists of an upper pressing mechanism 5, a front blocking mechanism 6, a rear pushing mechanism 7, and a side pressing mechanism 8.

[0027] Reference Figure 1 and Figure 4The pressing mechanism 5 is located directly above the intermediate roller conveyor line 3, and includes a rolling assembly 51 and a first lifting drive assembly 52 that drives the rolling assembly 51 to move up and down. The first lifting drive assembly 52 includes a support frame 521 and a first cylinder 522. The support frame 521 is fixed to the frame 1, and the first cylinder 522 is vertically mounted on the support frame 521 with its telescopic shaft facing downwards. The rolling assembly 51 includes a mounting rod 511 and several rollers 512. The length direction of the mounting rod 511 is consistent with the length direction of the roller conveyor line 3. The several rollers 512 are evenly arranged along the length direction of the mounting rod 511 and are rotatably mounted on the mounting rod 511. The end of the telescopic shaft of the first cylinder 522 is fixedly connected to the mounting rod 511, thereby driving the several rollers 512 to move up and down as a whole, so that the rollers 512 press down on the carton board, making it less likely for the upper carton board to be misaligned or even fall off due to vibration.

[0028] Reference Figure 1 and Figure 5 The front baffle mechanism 6 is located at the second gap position and includes a baffle 61 and a second lifting drive assembly 62 for driving the baffle 61 to rise and fall. The second lifting drive assembly 62 includes a mounting plate 621 and a second cylinder 622. The mounting plate 621 is vertically fixed on the frame 1, and the second cylinder 622 is vertically fixed on the mounting plate 621 with its telescopic shaft facing upward. The baffle 61 is located between the second cylinder 622 and the roller conveyor line 3, and its top is fixedly connected to the telescopic shaft of the second cylinder 622. The baffle 61 is driven to rise and fall by the second cylinder 622, so that the baffle 61 rises to abut against the carton board.

[0029] Reference Figure 1 and Figure 6 The push mechanism 7 is provided in two sets, located in two first gaps respectively. Each set of push mechanism 7 includes a lateral drive assembly 71, a third lifting drive assembly 72, and a push plate 73. The lateral drive assembly 71 includes a slide 711, a drive sprocket 712, a driven sprocket 713, a chain, and a second servo motor 714. The slide 711 is laterally fixed to the mounting bracket 31 of the outer roller conveyor line 3, and its length direction is consistent with the length direction of the roller conveyor line 3. The second servo motor 714 is mounted on one end of the slide 711 and fixed to the mounting bracket 31, and the drive sprocket 712 is mounted on the drive shaft 41 of the second servo motor 714. The driven sprocket 713 is rotatably mounted on the mounting bracket 31 at the other end of the slide 711. The chain is sleeved on the drive sprocket 712 and the driven sprocket 713. The third lifting drive assembly 72 includes a support base 721 and a third cylinder 722, and the support base 721 and the slide 711 form a sliding fit. The third cylinder 722 is vertically fixed on the support base 721 with its telescopic shaft facing upwards, and the top of the rear push plate 73 is fixedly connected to the telescopic shaft of the third cylinder 722. When the second servo motor 714 drives the chain to rotate, it drives the support base 721 to slide back and forth along the length of the slide block 711.

[0030] Reference Figure 1 and Figure 7 Two sets of side-pressing mechanisms 8 are provided, both located above the roller conveyor line 3 and distributed on the left and right sides of the front baffle mechanism 6. Each set of side-pressing mechanisms 8 includes a side-pressing plate 81 and a side-pressing drive assembly 82 for driving the side-pressing plate 81 to move laterally. The side-pressing drive assembly 82 includes a connecting frame 821 and a fourth cylinder 822. The fourth cylinder 822 is horizontally mounted on the connecting frame 821, and its telescopic shaft points towards the front baffle mechanism 6. The side-pressing plate 81 is fixed to the end of the telescopic shaft. A spacing adjustment mechanism 9 is also provided on the frame 1. This assembly includes two laterally arranged lead screws 91 and two third servo motors 92. The length direction of the two lead screws 91 is perpendicular to the length direction of the roller conveyor line 3. The two third servo motors 92 are respectively connected to the two lead screws 91 and drive them to rotate. The connecting brackets 821 of the two side pressure drive components 82 are respectively installed on the corresponding lead screws 91 by threaded engagement. When the lead screw 91 rotates, it drives the side pressure drive components 82 and the side pressure plate 81 to move along the length of the lead screw 91 to accommodate cardboard stacks of different widths.

[0031] Working process: The cardboard stack is conveyed to the straightening station by three synchronously operating roller conveyor lines 3. The first cylinder 522 drives the roller 512 to press down the top of the stack, the second cylinder 622 drives the baffle 61 to rise to block the front end of the stack, the third cylinder 722 drives the rear push plate 73 to rise, and the second servo motor 714 drives the rear push plate 73 to move forward through the chain to align the rear end of the stack. The fourth cylinder 822 drives the two side pressure plates 81 to move towards the center at the same time to clamp the two sides of the stack, completing the five-sided flattening of the cardboard stack. Then, the second servo motor 714 drives the rear push plate 73 to move forward through the chain to align the rear end of the stack, so that the cardboard stack enters the strapping device 2. All the actuators are reset, and the strapping device 2 completes the strapping of the cardboard.

[0032] 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. An automatic cardboard strapping machine, characterized in that: The machine includes a frame on which a binding device, a conveying device, and a material straightening device are mounted. The conveying device comprises three parallel roller conveyor lines and a conveying drive mechanism that drives the three roller conveyor lines to operate synchronously. The output ends of the three roller conveyor lines are all connected to the binding device. A first gap exists between adjacent roller conveyor lines, and a second gap exists between the middle roller conveyor line and the binding device. The material straightening device is located at the output end of the roller conveyor lines and includes an upper pressing mechanism, a front baffle mechanism, a rear pushing mechanism, and a side pressing mechanism. The upper pressing mechanism is located above the middle roller conveyor line and includes a rolling assembly and a first lifting drive assembly that drives the rolling assembly to rise and fall. The front baffle mechanism includes a baffle located in the second gap and a drive mechanism for the baffle. The second lifting drive assembly for plate lifting includes two rear push mechanisms, each located in one of the two first gaps. Each rear push mechanism includes a lateral drive assembly, a third lifting drive assembly, and a rear push plate. The lateral drive assembly is connected to the third lifting drive assembly to drive the third lifting drive assembly to reciprocate along the length of the roller conveyor line. The third lifting drive assembly is connected to the rear push plate to drive the rear push plate to lift. There are also two side pressure mechanisms, both located above the roller conveyor line and on opposite sides of the front stop mechanism. Each side pressure mechanism includes a side pressure plate and a side pressure drive assembly that drives the side pressure plate to move away from or towards the front stop mechanism.

2. The automatic cardboard strapping machine according to claim 1, characterized in that: Each of the roller conveyor lines includes a mounting frame and a plurality of rollers evenly arranged along the length of the mounting frame. The plurality of rollers are rotatably connected to the mounting frame. Each mounting frame is also rotatably mounted with a plurality of pulleys. The plurality of pulleys are evenly arranged along the length of the mounting frame and are located below the rollers. A belt is commonly fitted onto the plurality of pulleys. The bottoms of the plurality of rollers are in frictional contact with the belt. Each mounting frame is also rotatably mounted with a pressure roller, which is located below the pulleys and presses down on the belt. The conveying device includes a drive shaft rotatably mounted on the frame, three drive wheels mounted on the drive shaft, three driven wheels respectively connected to the three pressure rollers, and a first servo motor whose output end is connected to the drive shaft. The three drive wheels and the three driven wheels are aligned one-to-one, and a transmission belt is fitted onto a pair of drive wheels and driven wheels that are aligned opposite each other.

3. The automatic cardboard strapping machine according to claim 1, characterized in that: The first lifting drive assembly includes a support frame and a first cylinder. The support frame is connected and fixed to the machine frame. The first cylinder is vertically fixed on the support frame with its telescopic shaft facing downwards. The rolling assembly includes a mounting rod and rollers. The length extension direction of the mounting rod is consistent with the length direction of the roller conveyor line. There are several rollers, all of which are rotatably mounted on the mounting rod and evenly arranged along the length direction of the mounting rod. The telescopic shaft of the first cylinder is connected and fixed to the mounting rod.

4. The automatic cardboard strapping machine according to claim 1, characterized in that: The second lifting drive assembly includes a mounting plate and a second cylinder. The mounting plate is vertically fixed to the frame, and the second cylinder is vertically fixed to the mounting plate. The drive shaft of the second cylinder is arranged upward. The top of the baffle is connected and fixed to the drive shaft of the second cylinder. The baffle is located between the second cylinder and the roller conveyor line.

5. The automatic cardboard strapping machine according to claim 2, characterized in that: The lateral drive assembly includes a slide, a drive sprocket, a driven sprocket, a chain, and a second servo motor. The slide is laterally positioned in the second gap and fixed to the mounting bracket on the outer side, with its length direction aligned with the length direction of the roller conveyor line. The third lifting drive assembly is slidably connected to the slide to achieve reciprocating sliding along the length direction of the slide. The second servo motor is located at one end of the slide and fixed to the mounting bracket. The drive sprocket is positioned on the drive shaft of the second servo motor. The driven sprocket is located at the end of the slide away from the second servo motor and is rotatably connected to the mounting bracket. The chain is sleeved on the driven sprocket and the drive sprocket.

6. The automatic cardboard strapping machine according to claim 5, characterized in that: The third lifting drive assembly includes a support base and a third cylinder. The support base is slidably connected to the slide block. The third cylinder is fixed on the support base with its telescopic shaft facing upward. The top end of the rear push plate is fixedly connected to the telescopic shaft of the third cylinder.

7. The automatic cardboard strapping machine according to claim 1, characterized in that: The side pressure drive assembly includes a connecting frame and a fourth cylinder. The fourth cylinder is horizontally arranged on the connecting frame, and the telescopic shaft of the fourth cylinder faces the front stop mechanism. The side pressure plate is connected to the drive shaft of the fourth cylinder.

8. The automatic cardboard strapping machine according to claim 1, characterized in that: The frame is also equipped with a spacing adjustment mechanism, which includes two lead screws and two third servo motors. The two third servo motors are respectively connected to the two lead screws to drive the lead screws to rotate. The two lead screws are arranged laterally and their length direction is perpendicular to the length direction of the roller conveyor line. The two side pressure drive components are respectively threaded to the two lead screws and move back and forth along the length direction of the lead screws by rotating the lead screws.

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