A carton conveying device

Abstract

This invention discloses a carton conveying device, including a mounting bracket and a conveyor belt assembly. The conveyor belt assembly includes a conveyor belt and a driving wheel and a driven wheel for tensioning the conveyor belt. The mounting bracket is also equipped with a first linear drive device and a one-way clutch. The one-way clutch is connected between the first linear drive device and the driving wheel. The drive shaft of the first linear drive device drives the one-way clutch to rotate by extending and retracting, causing the driving wheel, which is connected to the one-way clutch, to drive the conveyor belt forward to push the cartons off the conveyor belt one by one. By setting a one-way clutch on the mounting bracket and connecting the first linear drive device and the driving wheel, this invention allows the first linear drive device to push off the un-unfolded cardboard pieces one by one by extending and retracting the conveyor belt assembly. This makes the conveying more precise and reliable, facilitates subsequent operations, and prevents the cardboard from being unable to unfold into a carton smoothly when it leaves the conveyor belt assembly due to excessive conveying speed.

Description

Technical Field

[0001] This invention specifically relates to a carton conveying device. Background Technology

[0002] Currently, in the production process, inclined ramps are usually used to transport cardboard that has not been unfolded into a carton. After the cardboard reaches the bottom of the ramp, workers unfold the carton. Because the transport speed of the ramp cannot be controlled, if the transport speed is too fast, workers may not be able to unfold each cardboard into a carton in time. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a carton conveying device to solve at least one of the above-mentioned problems.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a carton conveying device, including a mounting bracket and a conveyor belt assembly. The conveyor belt assembly is horizontally arranged on the mounting bracket for conveying cartons. The conveyor belt assembly includes a conveyor belt and a drive wheel and a driven wheel for tensioning the conveyor belt. The mounting bracket is also provided with a first linear drive device and a one-way clutch. The one-way clutch is connected between the first linear drive device and the drive wheel. The drive shaft of the first linear drive device drives the one-way clutch to rotate by extension and retraction, so that the drive wheel connected with the one-way clutch drives the conveyor belt forward to push the cartons away from the conveyor belt one by one.

[0005] In the aforementioned carton conveying device, the one-way clutch includes a ratchet and a pawl that cooperate with each other, as well as a swinging member. The ratchet is connected to and drives the drive wheel. The middle part of the swinging member is rotatably connected to the ratchet, and the end of the swinging member is hinged to the pawl. The drive shaft of the first linear drive device is connected to the swinging member and drives the swinging member to swing by extension and retraction, so that the swinging member pushes the ratchet to rotate through the pawl.

[0006] In the aforementioned carton conveying device, the mounting bracket includes a first bracket and a second bracket located on both sides of the carton, and two conveyor belt assemblies are provided. The two conveyor belt assemblies are a first conveyor belt assembly located on the first bracket and a second conveyor belt assembly located on the second bracket. The first conveyor belt assembly and the second conveyor belt assembly are respectively located on the opposite side walls of the first bracket and the second bracket.

[0007] In the aforementioned carton conveying device, both the first support and the second support are provided with a first linear drive device and a one-way clutch, which are located on the side walls of the first support and the second support away from the conveyor belt assembly.

[0008] In the aforementioned carton conveying device, an arc-shaped elastic pressure plate is rotatably connected to the second support. One end of the elastic pressure plate is connected to the second support with an elastic element, and the other end is located at the end of the conveyor belt assembly. The elastic pressure plate assists in unfolding the carton by squeezing the carton away from the conveyor belt from the side.

[0009] In the aforementioned carton conveying device, a pull rod is also provided on the side wall of the first and second supports away from the conveyor belt assembly. The middle part of the pull rod is rotatably connected to the mounting bracket, and an elastic element is connected between the bottom of the pull rod and the mounting bracket. The top of the pull rod protrudes from the top surface of the conveyor belt and pulls the bottom of the carton to assist the carton in unfolding during the process of the carton leaving the conveyor belt.

[0010] In the aforementioned carton conveying device, a limiting component is provided on the side of the first conveyor belt assembly facing the second conveyor belt assembly. The limiting component includes a mounting plate, a rotating shaft, a limiting plate, a swing arm, and a second linear drive device. The mounting plate is fixed on a first bracket, the rotating shaft is rotatably connected to the mounting plate, the limiting plate and the swing arm are fixed on the rotating shaft, the second linear drive device is connected to the mounting plate, and the output shaft of the second linear drive device is connected to the swing arm. The output shaft of the second linear drive device drives the swing arm to swing through extension and retraction. The limiting plate is linked to the swing arm through the rotating shaft to switch between a limiting position that prevents the carton from tipping over and an obstacle position that allows the carton to pass through.

[0011] In the aforementioned carton conveying device, both the first linear drive device and the second linear drive device are cylinders.

[0012] In the aforementioned carton conveying device, an elastic check element is provided on the mounting bracket. The elastic check element protrudes from the side wall of the mounting bracket facing the conveyor belt assembly to limit the carton that passes over the elastic check element.

[0013] The beneficial effects of this invention are:

[0014] A carton conveying device includes a mounting bracket and a conveyor belt assembly. The conveyor belt assembly is horizontally mounted on the mounting bracket for conveying cartons. The conveyor belt assembly includes a conveyor belt and a drive pulley and a driven pulley for tensioning the conveyor belt. The mounting bracket also provides a first linear drive device and a one-way clutch. The one-way clutch is connected between the first linear drive device and the drive pulley. The drive shaft of the first linear drive device drives the one-way clutch to rotate via extension and retraction, causing the drive pulley, which is coupled to the one-way clutch, to drive the conveyor belt forward to push the cartons off the conveyor belt one by one. This technical solution has the following technical advantages:

[0015] This invention utilizes a one-way clutch connected to the first linear drive device and the drive wheel on a mounting bracket. The first linear drive device extends and retracts to drive the one-way clutch to rotate unidirectionally. Because the one-way clutch only transmits power in one direction, it transforms the extension and retraction of the first linear drive device into unidirectional rotation of the drive wheel. Each extension and retraction of the first linear drive device drives the drive wheel to rotate unidirectionally by a certain angle, thereby propelling the conveyor belt forward and pushing a piece of cardboard that has not yet unfolded into a carton away from the conveyor belt. In other words, the first linear drive device can achieve the conveyor belt assembly's individual pushing away of cardboard pieces that have not yet unfolded into a carton simply by extending and retracting. This makes the conveying more precise and reliable, facilitates subsequent operations, and prevents the cardboard from being conveyed too quickly on the conveyor belt assembly, which could prevent it from unfolding into a carton when it leaves the conveyor belt assembly.

[0016] The one-way clutch includes a mating ratchet and pawl, as well as a oscillating component. The ratchet is connected and rotates with the drive wheel. The middle part of the oscillating component is rotatably connected to the ratchet, and the end of the oscillating component is hinged to the pawl. The drive shaft of the first linear drive device is connected to the oscillating component and drives it to oscillate via extension and retraction, so that the oscillating component pushes the ratchet to rotate through the pawl. By employing a mating ratchet and pawl structure, the one-way clutch allows the pawl to engage externally with the ratchet. This provides precise control of the drive wheel through stepped adjustment, while also facilitating installation, machining, and subsequent maintenance.

[0017] The mounting bracket includes a first bracket and a second bracket located on both sides of the cardboard box. Two conveyor belt assemblies are provided: a first conveyor belt assembly mounted on the first bracket and a second conveyor belt assembly mounted on the second bracket. The first and second conveyor belt assemblies are respectively located on the opposite side walls of the first and second brackets. By respectively setting the first and second conveyor belt assemblies on the opposite side walls of the first and second brackets, the conveyor belt assemblies do not need to be very wide to support and transport the cardboard on both sides, preventing the cardboard from deflecting during transport.

[0018] Both the first and second supports are equipped with a first linear drive device and a one-way clutch, which are located on the sidewalls of the first and second supports opposite to the conveyor belt assembly. By placing the first linear drive device and the one-way clutch on the opposite side of the first and second supports, they can stably drive the first and second conveyor belt assemblies synchronously without affecting the conveyor belt assembly's transport of the cardboard, thus ensuring the stable transport of the unfurled cardboard.

[0019] A curved elastic pressure plate is rotatably connected to the second support. One end of the elastic pressure plate is connected to the second support with an elastic element, and the other end is located at the end of the conveyor belt assembly. The elastic pressure plate assists in unfolding the cartons by squeezing them from the side and detaching them from the conveyor belt. When an unfolded carton is pushed away from the conveyor belt, it unfolds by being squeezed by the curved surface of the elastic pressure plate, eliminating the need for robotic arms or other structures to unfold the carton, thus improving production efficiency. As the carton passes the elastic pressure plate, the plate can rotate to a certain extent with the carton to better assist in unfolding and prevent the elastic pressure plate from breaking due to impact. After the carton is unfolded, the elastic pressure plate will reset under the pull of the first elastic element, ready to unfold the next carton, resulting in a better unfolding effect.

[0020] The first and second supports are equipped with pull rods on their side walls opposite to the conveyor belt assembly. The middle of the pull rod is rotatably connected to the mounting bracket, and an elastic element connects the bottom of the pull rod to the mounting bracket. The top of the pull rod protrudes from the top surface of the conveyor belt, pulling the bottom of the carton to assist in its unfolding as it detaches from the conveyor belt. When the carton unfolds and detaches from the conveyor belt, the bottom of the carton pushes the pull rod to rotate and pass over it. Simultaneously, the elastic element pulls the pull rod in the opposite direction under its elastic force, creating significant friction between the top of the pull rod and the bottom of the carton. Under this friction, the pull rod pulls the bottom of the carton in the opposite direction of the conveyor belt, further assisting in the unfolding of the carton and improving its unfolding effect. When the carton detaches from the conveyor belt assembly, the elastic element pulls the pull rod back to its original position protruding from the top surface of the conveyor belt assembly, ready for the next unfolding. The entire unfolding process requires no power drive, reducing production costs.

[0021] Both the first and second linear drive units are cylinders. Because cylinders can output large forces and are suitable for various environments, using cylinders as the first and second linear drive units ensures the driving effect of the limit components and one-way clutches. At the same time, the first and second linear drive units are less prone to damage, reducing maintenance costs.

[0022] The mounting bracket is equipped with a flexible check element that protrudes from the side wall of the mounting bracket facing the conveyor belt assembly to limit the carton from passing over the flexible check element. Unfolded cardboard will pass over the flexible check element during the conveying process, and the flexible check element can limit the cardboard that passes over it to prevent the carton from tipping over in the opposite direction of the conveying direction.

[0023] The features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0025] Figure 1 This is a perspective view of a carton conveying device of the present invention in the conveying state;

[0026] Figure 2 This is a perspective view of a carton conveying device of the present invention in a non-transferring state;

[0027] Figure 3 for Figure 2 Enlarged view of part A;

[0028] Figure 4 This is an assembly diagram of the first linear drive unit and the one-way clutch;

[0029] Figure 5 A 3D view showing the support arm of the supporting component in an raised position.

[0030] Figure label:

[0031] 100, First support; 110, First linear drive device; 120, One-way clutch; 121, Swinging protrusion; 130, Elastic check valve; 140, Tie rod; 150, Second elastic element; 160, Conveyor belt mechanism; 161, Conveyor belt;

[0032] 200, Second bracket; 210, Elastic pressure plate; 211, Connecting end; 220, First elastic element;

[0033] 300, Conveyor belt assembly; 310, First conveyor belt assembly; 320, Second conveyor belt assembly; 330, Conveyor belt; 340, Driving pulley; 350, Driven pulley;

[0034] 410. Mounting plate; 420. Rotating shaft; 430. Limiting plate; 440. Swing rod; 450. Second linear drive device;

[0035] 500. Actuating component; 510. Actuating base; 520. Actuating arm;

[0036] 600, Support assembly; 610, Support base; 620, Support arm; 630, First support assembly; 640, Second support assembly;

[0037] 700. Rotating mechanism; 710. Drive rod; 720. Drive motor;

[0038] 800. Telescopic assembly; 810. Mounting base; 820. Cylinder;

[0039] 910. Cardboard; 920. Carton. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present invention.

[0041] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more, unless explicitly defined otherwise.

[0043] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] Example:

[0046] A carton conveying device, such as Figures 1 to 5 As shown, the system includes a mounting bracket and a conveyor belt assembly 300. The mounting bracket includes a first bracket 100 and a second bracket 200 arranged in parallel, located on opposite sides of the carton 920. Two conveyor belt assemblies 300 are provided, horizontally mounted on opposite side walls of the first bracket 100 and the second bracket 200 for transporting the carton 920. The conveyor belt assembly 300 mounted on the first bracket 100 is designated as the first conveyor belt assembly 310, and the conveyor belt assembly 300 mounted on the second bracket 200 is designated as the second conveyor belt assembly 320. The two conveyor belt assemblies 300 have identical structures, each including a conveyor belt 330, a drive pulley 340, and a driven pulley 350. The drive pulley 340 and the driven pulley 350 are rotatably connected to the mounting bracket to tension the conveyor belt 330 and drive the conveyor belt 330 to move through rotation.

[0047] like Figure 4 As shown, in this embodiment, a first linear drive device 110 and a one-way clutch 120 are provided on the side of the first support 100 away from the conveyor belt assembly 300. The one-way clutch 120 includes a ratchet, a pawl, and a swing member. The swing member is disc-shaped and is concentrically arranged and rotatably connected to the ratchet. The edge of the swing member is rotatably connected to the pawl, and the pawl engages with the ratchet teeth on the outer edge of the ratchet. A swing protrusion 121 integrally formed with the swing member is provided on the outer edge of the swing member. The first linear drive device 110 is fixed on the first support 100, and the drive shaft of the first linear drive device 110 is rotatably connected to the swing protrusion 121. The drive shaft of 110 can extend and retract to rotate the oscillating protrusion 121 and the oscillating component by a certain angle. The rotating oscillating component can push the ratchet to rotate a certain distance in a set direction through the pawl, thereby causing the conveyor belt 330 of the first conveyor belt assembly 310 to move the carton 920 a certain distance towards the output end. Each extension and retraction of the first linear drive device 110 can push one carton 920 away from the conveyor belt 330. That is, the first linear drive device 110 can extend and retract to drive the one-way clutch 120 to rotate in one direction, thereby driving the conveyor belt 330 through the drive wheel 340 connected to the one-way clutch 120 to push the carton 920 away from the conveyor belt 330 one by one. The one-way clutch 120 adopts a matching ratchet and pawl structure, so that the pawl is externally engaged on the ratchet. While achieving precise control of the drive wheel 340 through stepped adjustment, it also facilitates installation, processing and subsequent maintenance. Of course, it is understandable that a first linear drive device 110 and a one-way clutch 120 for driving the second conveyor belt assembly 320 are provided at a position symmetrical to the first support 100 on the second support 200, and the two first linear drive mechanisms extend and retract synchronously.

[0048] In this embodiment, the first conveyor belt assembly 310 is provided with a limiting component on the side facing the second conveyor belt assembly 320, such as... Figure 3 As shown, the limiting assembly includes a mounting plate 410, a rotating shaft 420, a limiting plate 430, a swing arm 440, and a second linear drive device 450. The mounting plate 410 is fixed to the first bracket 100. The rotating shaft 420 is horizontally positioned and rotatably connected to the side wall of the mounting plate 410. The bottom end of the limiting plate 430 is fixed above the rotating shaft 420, and the top end of the swing arm 440 is fixed below the rotating shaft 420. The limiting plate 430, swing arm 440, and rotating shaft 420 can all rotate together. One end of the second linear drive device 450 is rotatably connected to the mounting plate 410, and the output shaft of the other end is rotatably connected to the swing arm 440, allowing the output shaft of the second linear drive device 450 to rotate. The extension and retraction can drive the swing arm 440 to swing, which in turn drives the rotating shaft 420 and the limiting plate 430 to swing, so that the limiting plate 430 switches between the limiting position and the avoidance position. When the limiting plate 430 is in the limiting position, the top of the limiting plate 430 is vertically set and protrudes from the top surface of the conveyor belt 330 to prevent the unexpanded carton 920 from tilting in the output direction. When the limiting plate 430 is in the avoidance position, the top of the limiting plate 430 no longer protrudes from the top surface of the conveyor belt 330 to allow the carton 920 to pass. Because the cartons 920 on the conveyor belt 330 are in an unfurled cardboard 910 state, they tend to tip over. By setting a limiting component, multiple unfurled cardboard 910s can be limited. Under the control of the second linear drive device 450, the limiting component swings to avoid the cartons 920 being pushed away from the conveyor belt assembly 300 one by one, while continuing to limit the unfurled cardboard 910s that have not yet left the conveyor belt 330, so as to prevent the unfurled cartons 920 from tipping over in the transmission direction and ensure the stable and reliable transmission of cartons 920 on the conveyor belt assembly 300. In order to further limit the unfurled cartons 920 on the conveyor belt 330, this embodiment also provides an elastic check member 130 on the mounting bracket. There are two elastic check members 130, which are respectively provided on the opposite side walls of the first mounting bracket and the second mounting bracket, and protrude from the first mounting bracket and the second mounting bracket. During the conveying process, the unfurled cardboard 910 will pass over the elastic stop 130. The elastic stop 130 can limit the cardboard 910 that has passed over it to prevent the carton 920 from tipping over in the opposite direction of the conveying direction.

[0049] Preferably, both the first linear drive device 110 and the second linear drive device 450 are cylinders, because cylinders can output large forces and are suitable for various environments. Therefore, using cylinders as the first linear drive device 110 and the second linear drive device 450 can ensure the driving effect of the limit component and the one-way clutch 120. At the same time, the first linear drive device 110 and the second linear drive device 450 are not easily damaged, reducing maintenance costs.

[0050] In this embodiment, an arc-shaped elastic pressure plate 210 is also provided on the side wall of the second support 200 facing the first support 100. One end of the elastic pressure plate 210 is connected to the end of the second support 200 used for outputting the carton 920, and the other end extends horizontally toward the first support 100. The end of the elastic pressure plate 210 is bent in the direction of movement of the carton 920 to form an arc-shaped surface facing the carton 920. When the unexpanded carton 920 is pushed away from the conveyor belt 330, the side is squeezed by the arc-shaped surface of the elastic pressure plate 210 and can be unfolded. That is, the setting of the elastic pressure plate 210 can unfold the carton 920 at the same time as it is pushed away from the conveyor belt assembly 300, without the need for a robotic arm or other structure to unfold the carton 920, thus improving production efficiency. In this preferred embodiment, the end of the elastic pressure plate 210 connected to the second support 200 is designated as the connecting end 211. The connecting end 211 is rotatably connected to the second support 200. A first elastic element 220 is also provided on the side of the second support 200 facing away from the first support 100. One end of the first elastic element 220 is connected to the second support 200, and the other end is connected to the connecting end 211. This allows the elastic pressure plate 210 to rotate to a certain extent as the carton 920 passes through it, thus better assisting the carton 920 in unfolding and preventing the elastic pressure plate 210 from breaking due to impact. After the carton 920 unfolds, the elastic pressure plate 210 will reset under the pull of the first elastic element 220, ready to unfold the next carton 920, resulting in a better unfolding effect for the carton 920.

[0051] like Figure 4As shown, a pull rod 140 is also provided on the side wall of the first support 100 opposite to the conveyor belt assembly 300. The middle part of the pull rod 140 is rotatably connected to the first support 100. The top of the pull rod 140 protrudes from the top surface of the conveyor belt 330. A second elastic element 150 is connected between the bottom of the pull rod 140 and the mounting bracket. When the carton 920 unfolds and detaches from the conveyor belt 330, the bottom of the carton 920 pushes the pull rod 140 to rotate and pass over the pull rod 140. At the same time, the second elastic element 150 will pull the pull rod 140 in the opposite direction under the action of elasticity, so that the pull rod... A significant frictional force is generated between the top of the pull rod 140 and the bottom of the carton 920. Under the action of this friction, the pull rod 140 pulls the bottom of the carton 920 in the opposite direction of the conveying direction to assist the carton 920 in unfolding, resulting in a better unfolding effect. When the carton 920 detaches from the conveyor belt assembly 300, the second elastic element 150 pulls the pull rod 140 back to its original position protruding from the top surface of the conveyor belt assembly 300, ready for the next unfolding of the carton 920. The entire unfolding process does not require power drive, reducing production and processing costs. It is understood that in this embodiment, the second support 200 is also provided with a pull rod 140 and a second elastic element 150 at symmetrical positions to the first support 100. By having both pull rods 140 simultaneously pull the bottom of the carton 920, the force on the bottom of the carton 920 is more even, resulting in a better unfolding effect.

[0052] In this embodiment, a pushing assembly 500 is slidably connected to the first support 100. The pushing assembly 500 includes a pushing seat 510 and a pushing arm 520. The pushing seat 510 is slidably connected to the first support 100, and the pushing arm 520 is rotatably connected to the pushing seat 510. The free end of the pushing arm 520 can rotate around the hinge end of the pushing arm 520, so that the pushing arm 520 is raised to a vertical state to move away from the conveyor belt assembly 300, or the pushing arm 520 is laid flat to a horizontal state to move closer to the conveyor belt assembly 300. Two support assemblies 600 are slidably connected to the second bracket 200. Each support assembly 600 includes a support base 610 and a support arm 620. The support base 610 is slidably connected to the first bracket 100, and the support arm 620 is rotatably connected to the support base 610. The free end of the support arm 620 can rotate around its hinged end, allowing the support arm 620 to be raised to a vertical position to move away from the conveyor belt assembly 300, or to be laid flat to a horizontal position to move closer to the conveyor belt assembly 300. For ease of description, in this embodiment, the support assembly 600 closer to the elastic pressure plate 210 is designated as the first support assembly 630, and the support assembly 600 farther from the elastic pressure plate 210 is designated as the second support assembly 640.

[0053] Rotation mechanisms 700 are respectively provided on the first bracket 100 and the second bracket 200. The rotation mechanism 700 on the second bracket 200 is used to simultaneously drive the two support arms 620 to rotate. The rotation mechanism 700 includes a drive rod 710 and a drive motor 720. The two ends of the drive rod 710 are rotatably connected to the mounting bracket. The drive motor 720 is fixed to the end of the mounting bracket. The drive shaft of the drive motor 720 is connected to the drive rod 710 to drive the drive rod 710 to rotate. The drive rod 710 on the first bracket 100 passes through the hinge end of the push arm 520 and moves with the push arm 520 to drive the push arm 520 to rotate. The drive rod 710 on the second bracket 200 passes through the hinge ends of the two support arms 620 in sequence and moves with the support arms 620 to simultaneously drive the two support arms 620 to rotate. The drive rod 710, which is mounted on the support arm 620 or the push arm 520, can drive the support arm 620 or the push arm 520 to rotate without affecting the translation of the support arm 620 or the push arm 520. When the drive shaft of the drive motor 720 rotates, the drive rod 710 rotates synchronously. The rotating drive rod 710 can drive the support arm 620 or the push arm 520 to rotate. The structure is simple and easy to install.

[0054] In this embodiment, a telescopic assembly 800 is also provided between the two support seats 610. The telescopic assembly 800 includes a mounting seat 810 and two cylinders 820 fixed on the mounting seat 810. The mounting seat 810 is slidably connected to the second bracket 200. The two cylinders 820 are arranged in opposite directions so that the output shafts of the two cylinders 820 are opposite to each other and are respectively connected to the two support seats 610. The two cylinders 820 can drive the two support seats 610 to slide by extending and retracting their output shafts, thereby adjusting the distance between the two support assemblies 600. In this embodiment, the pushing mechanism is a conveyor belt mechanism 160 respectively provided on the first bracket 100 and the second bracket 200. The pushing seat 510 on the first bracket 100 is connected and driven by the conveyor belt 161 of the conveyor belt mechanism 160 on the first bracket 100. The mounting seat 810 on the second bracket 200 is connected and driven by the conveyor belt 161 of the conveyor belt mechanism 160.

[0055] The conveying process of carton 920 on conveyor belt assembly 300 is as follows:

[0056] 1. The first linear drive device 110 drives the one-way clutch 120 to rotate in one direction through telescopic drive, and then drives the conveyor belt 330 through the drive wheel 340 connected to the one-way clutch 120 to push the cardboard 910 that has not been unfolded into a carton 920 away from the conveyor belt 330 one by one. When the unfurled cardboard 910 is pushed away from the conveyor belt 330, the side of the cardboard 910 is squeezed and unfolded by the elastic pressure plate 210. At this time, the push component 500 on the first bracket 100 and the support component 600 on the second bracket 200 slide on the mounting bracket as the carton 920 moves. The push arm 520 of the push component 500 is in a horizontal state and abuts against the last cardboard 910 away from the output end of the conveyor belt assembly 300, so as to limit the rear of the cardboard 910 and prevent the cardboard 910 from tilting backward on the conveyor belt assembly 300.

[0057] 2. While the cardboard 910 is being conveyed, the support mechanism is located on the side of the push assembly 500 away from the elastic pressure plate 210. At this time, a carton 920 is also placed on the conveyor belt assembly 300 between the two support arms 620. When the support arm 620 of the first support assembly 630 moves directly below the push arm 520, the drive motor 720 on the first bracket 100 drives the drive rod 710 to rotate. The drive rod 710 drives the push arm 520 to rotate, so that the push arm 520 is lifted from the horizontal state to the vertical state.

[0058] 3. The conveyor belt mechanism 160 on the first support 100 drives the push seat 510 to slide along the first support 100, so that the push assembly 500 moves to a position opposite to the second support assembly 640. Then, the drive rod 710 on the first support 100 drives the push arm 520 to rotate, so that the push arm 520 is laid flat from the vertical state to the horizontal state. At this time, the push arm 520 is not located directly above the support arm 620 of the second support assembly 640, so as to prevent the push arm 520 from blocking the rotation of the support arm 620 of the second support assembly 640.

[0059] 4. The drive shaft of the drive motor 720 on the second bracket 200 drives the drive rod 710 to rotate. The drive rod 710 drives the two support arms 620 to rotate simultaneously, so that the two support arms 620 are lifted from the horizontal state to the vertical state. When the push arm 520 passes the first support component 630, it indicates that the carton 920 needs to be replenished.

[0060] 5. The conveyor belt 161 of the conveyor belt mechanism 160 on the second support 200 drives the mounting base 810 to slide, so that the telescopic component 800 moves toward the input end of the second support 200. While the telescopic component 800 slides, it drives the support component 600 to slide on the second support 200. The cylinder on the mounting base 810 drives the two mounting bases 810 to move by telescoping, so as to adjust the distance between the two support arms 620 to a suitable distance.

[0061] 6. The drive shaft of the drive motor 720 on the second bracket 200 drives the drive rod 710 to rotate. The drive rod 710 drives the two support arms 620 to rotate simultaneously, so that the two support arms 620 are lowered from the vertical state to the horizontal state above the conveyor belt assembly 300. Multiple cartons 920 with unfurled cardboard 910 can be placed on the conveyor belt assembly 300 between the two support arms 620. The two support arms 620 limit the two ends of the cardboard 910 to prevent the cardboard 910 from tipping over, thus replenishing the cardboard 910.

[0062] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A carton conveying device, characterized in that: The system includes a mounting bracket and a conveyor belt assembly. The conveyor belt assembly is horizontally mounted on the mounting bracket for transporting cartons. The conveyor belt assembly includes a conveyor belt and a drive pulley and a driven pulley for tensioning the conveyor belt. The mounting bracket also has a first linear drive device and a one-way clutch. The one-way clutch is connected between the first linear drive device and the drive pulley. The drive shaft of the first linear drive device drives the one-way clutch to rotate via extension and retraction, causing the drive pulley, which is connected to the one-way clutch, to drive the conveyor belt forward to push the cartons off the conveyor belt one by one. The mounting bracket includes a first bracket and a second bracket located on both sides of the cartons. Two conveyor belt assemblies are provided: a first conveyor belt assembly mounted on the first bracket and a second conveyor belt assembly mounted on the second bracket. The first and second conveyor belt assemblies are respectively mounted on the opposite sidewalls of the first and second brackets. A pull rod is also provided on the sidewall of the first and second brackets away from the conveyor belt assembly. The middle of the pull rod rotates... A pull rod is movably connected to the mounting bracket. An elastic element connects the bottom of the pull rod to the mounting bracket, and the top of the pull rod protrudes from the top surface of the conveyor belt. During the process of the carton leaving the conveyor belt, the bottom of the carton is pulled to assist in unfolding the carton. Two support assemblies are slidably connected to the second bracket. Each support assembly includes a support seat slidably connected to the second bracket and a support arm rotatably connected to the support seat. The support arm rotates to move closer to or away from the conveyor belt assembly. A pushing assembly is slidably connected to the first bracket. The pushing assembly includes a pushing seat slidably connected to the first bracket and a pushing arm rotatably connected to the pushing seat. The pushing arm rotates to move closer to or away from the conveyor belt assembly. Pushing mechanisms are provided on both the first and second brackets to drive the support assemblies and the pushing assembly to slide. Rotating mechanisms are provided on both the first and second brackets to drive the support arm and the pushing arm to rotate. A telescopic assembly connects the two support seats, and the telescopic assembly adjusts the distance between the two support assemblies by extending and retracting.

2. The carton conveying device according to claim 1, characterized in that: The one-way clutch includes a ratchet and a pawl that cooperate with each other, as well as a swing member. The ratchet is connected to and rotates with the drive wheel. The middle part of the swing member is rotatably connected to the ratchet. The end of the swing member is hinged to the pawl. The drive shaft of the first linear drive device is connected to the swing member and drives the swing member to swing by extension and retraction, so that the swing member pushes the ratchet to rotate through the pawl.

3. The carton conveying device according to claim 1, characterized in that: Both the first support and the second support are provided with the first linear drive device and the one-way clutch, which are located on the side wall of the first support and the second support away from the conveyor belt assembly.

4. A carton conveying device according to claim 3, characterized in that: An arc-shaped elastic pressure plate is rotatably connected to the second support. One end of the elastic pressure plate is connected to the second support with an elastic element, and the other end is located at the end of the conveyor belt assembly. The elastic pressure plate assists the carton to unfold by squeezing the carton away from the conveyor belt from the side.

5. A carton conveying device according to claim 3, characterized in that: The first conveyor belt assembly has a limiting component on the side facing the second conveyor belt assembly. The limiting component includes a mounting plate, a rotating shaft, a limiting plate, a swing arm, and a second linear drive device. The mounting plate is fixed on the first bracket. The rotating shaft is rotatably connected to the mounting plate. The limiting plate and the swing arm are fixed on the rotating shaft. The second linear drive device is connected to the mounting plate, and the output shaft of the second linear drive device is connected to the swing arm. The output shaft of the second linear drive device drives the swing arm to swing through extension and retraction. The limiting plate is linked to the swing arm through the rotating shaft to switch between a limiting position that prevents the carton from tipping over and an obstacle position that allows the carton to pass through.

6. A carton conveying device according to claim 5, characterized in that: Both the first linear drive device and the second linear drive device are cylinders.

7. A carton conveying device according to claim 1, characterized in that: The mounting bracket is provided with an elastic check element, which protrudes from the side wall of the mounting bracket facing the conveyor belt assembly to limit the carton that passes over the elastic check element.

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