Paperboard conveying device and paper wrapping machine

Abstract

A paper feeding mechanism of the paperboard conveying device comprises a first side frame assembly and a second side frame assembly, the distance between the first side frame assembly and the second side frame assembly is adjustable, the first side frame assembly comprises a first side paper blocking frame and a first guide part, and the second side frame assembly comprises a second side paper blocking frame and a second guide part. A storage space for stacking paperboards is formed between the first side paper blocking frame and the second side paper blocking frame, a first paper blocking structure is arranged on the side, facing the storage space, of the first side paper blocking frame, a second paper blocking structure is arranged on the side, facing the storage space, of the second side paper blocking frame, and a paper outlet is formed between the first paper blocking structure and the second paper blocking structure. The first guide component and the second guide component extend towards the side of the paper feeding mechanism, a paper feeding channel is formed between the first guide component and the second guide component, and the paper feeding channel is located below the paper outlet. And a single paperboard at the bottommost part of the stacked paperboards in the storage space can be sucked and placed in the paper feeding channel.

Description

Technical Field

[0001] The present application relates to the technical field of cardboard conveying, and in particular to a cardboard conveying device and a paper packaging machine. Background Art

[0002] In the fields of express delivery and cargo packaging, in order to transport the items safely and conveniently, people often use cardboard to package various items to meet the needs of item delivery. In the existing drop-type paper packaging machine, the paperboard is generally transported sideways by the paper packaging machine, and the device used is a paperboard conveying device. However, due to structural and design size problems, the existing side-feeding paperboard conveying device can only stack a small number of paperboards, and requires manual addition of paperboards for multiple times, which has poor applicability and is inconvenient to use. Summary of the invention

[0003] In order to solve at least one of the above technical problems, the present application provides a cardboard conveying device and a paper packaging machine, and the technical solutions adopted are as follows.

[0004] According to the first aspect of the present application, the cardboard conveying device includes: A paper feeding mechanism, comprising a first side frame assembly and a second side frame assembly with adjustable spacing, the first side frame assembly comprising a first side paper stop frame and a first guide component, the second side frame assembly comprising a second side paper stop frame and a second guide component, a storage space for stacking paperboards is formed between the first side paper stop frame and the second side paper stop frame, the first side paper stop frame is provided with a first paper stop structure on a side facing the storage space, the second side paper stop frame is provided with a second paper stop structure on a side facing the storage space, a paper outlet is formed between the first paper stop structure and the second paper stop structure, the first guide component and the second guide component both extend to the side of the paper feeding mechanism, a paper feeding channel is formed between the first guide component and the second guide component, and the paper feeding channel is located below the paper outlet; The paper suction assembly can suck the single cardboard at the bottom of the cardboard stack in the storage space and place the single cardboard in the paper feeding channel.

[0005] The cardboard conveying device according to the embodiment of the present application has at least the following beneficial effects: The spacing between the first side frame assembly and the second side frame assembly of the cardboard conveying mechanism can be adjusted, that is, cardboards of different sizes can be stored by adjusting the spacing between the first side paper stop frame and the second side paper stop frame. The first paper stop structure and the second paper stop structure are used to hold the stacked cardboards in the storage space. A paper outlet is formed between the first paper stop structure and the second paper stop structure. A paper feeding channel formed between the first guide component and the second guide component is used to convey the cardboards in the paper outlet direction. The spacing between the first guide component and the second guide component can be adjusted following the first side paper stop frame and the second side paper stop frame respectively to convey cardboards of different sizes. The paper feeding channel is located below the paper outlet. The paper suction component can suck the single cardboard at the bottom of the stacked cardboards in the storage space one by one, and take the single cardboard out of the paper outlet and place it on the paper feeding channel to realize the conveyance of the single cardboard. When the cardboard is taken out of the paper outlet, the first paper stop structure and the second paper stop structure can pre-fold the single cardboard. The storage space of the cardboard conveying mechanism can hold the stacked cardboards, and there is no need for workers to add cardboards many times. The mechanism has strong adaptability and can stably obtain and transport single cardboards.

[0006] In certain embodiments of the present application, the cardboard conveying device includes a frame, the paper feeding mechanism includes a frame body movably connected to the frame, the frame body can reciprocate relative to the frame along the paper feeding direction of the paper feeding channel, and the first side paper stop frame and the second side paper stop frame are movably connected to the frame body.

[0007] In certain embodiments of the present application, a sliding component is provided on the frame body, the paper feeding mechanism includes an adjusting component, the adjusting component includes a first screw provided on the frame body, the first screw is arranged along a paper feeding direction perpendicular to the paper feeding channel, the first side frame assembly is provided with a first nut cooperating with the first screw, and the second side frame assembly is provided with a second nut cooperating with the first screw.

[0008] In certain embodiments of the present application, a sliding component is provided on the frame body, and a slide rail cooperating with the sliding component is provided on the frame, and the slide rail is arranged along the paper feeding direction of the paper feeding channel.

[0009] In certain embodiments of the present application, a third side paper stop frame is provided on the frame body on the side facing the paper feeding direction of the paper feeding channel, the third side paper stop frame is located between the first side paper stop frame and the second side paper stop frame, the third side paper stop frame, the first side paper stop frame and the second side paper stop frame together form a storage space, the third side paper stop frame is provided with a third paper stop structure on the side facing the storage space, and the third paper stop structure, the first paper stop structure and the second paper stop structure are located on the same plane.

[0010] In certain embodiments of the present application, the paper suction assembly includes a lifting cylinder installed on the frame body, a vacuum suction cup is provided at the output end of the lifting cylinder, and the lifting cylinder is located below the paper outlet.

[0011] In certain embodiments of the present application, a paper feeding assembly is provided on one side of the frame body facing the paper feeding direction of the paper feeding channel, and the paper feeding assembly is located between the first guide component and the second guide component. The paper feeding assembly includes a pressure wheel and a conveying belt arranged along the paper feeding direction of the paper feeding channel, and an auxiliary channel for conveying a single cardboard is formed between the pressure wheel and the conveying belt, and the auxiliary channel and the paper feeding channel are located on the same plane.

[0012] In certain embodiments of the present application, a fourth side paper stop frame is provided on the frame body on the side of the paper feeding direction away from the paper feeding channel, the fourth side paper stop frame is located between the first side paper stop frame and the second side paper stop frame, the fourth side paper stop frame, the first side paper stop frame and the second side paper stop frame together form a storage space, the fourth side paper stop frame is provided with a fourth paper stop structure on the side facing the storage space, and the fourth paper stop structure, the first paper stop structure and the second paper stop structure are located on the same plane.

[0013] In certain embodiments of the present application, a paper pushing cylinder is provided on the fourth side paper stop frame, and the paper pushing cylinder is arranged along the paper feeding direction of the paper feeding channel, and the paper pushing cylinder is used to push the cardboard in the paper feeding channel below the paper outlet into the auxiliary channel.

[0014] According to the second aspect of the present application, the paper packing machine comprises a paper packing machine body and the cardboard conveying device in the above embodiment, the paper feeding mechanism is installed on the paper packing machine body, and the first guide component and the second guide component both extend to the entrance of the paper packing machine body.

[0015] The paper wrapping machine according to the present application has at least the following beneficial effects: the paper wrapping machine using the paperboard conveying device can stably obtain paperboards and has high working efficiency.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present application is further illustrated below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments embodied in the following drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0018] Figure 1 is a three-dimensional diagram of an embodiment of a cardboard conveying device in the present application; Figure 2 is a perspective view of an embodiment of a rack in the present application; Figure 3 is a three-dimensional diagram of an embodiment of the frame body in the present application; Figure 4 It is a partial structural schematic diagram of an embodiment of the frame body in the present application; Figure 5 is a three-dimensional diagram of an embodiment of a first side paper stop frame in the present application; Figure 6 is a three-dimensional diagram of an embodiment of a paper absorbent assembly in the present application; Figure 7 is a three-dimensional diagram of an embodiment of a fourth side paper stop frame in the present application; Figure 8 is a three-dimensional diagram of an embodiment of a third side paper stop frame in the present application; Fig. 9 It is a stereoscopic diagram of an embodiment of the paper feeding assembly in the present application.

[0019] Reference numerals: Paper feeding mechanism 100; A first side paper stop frame 110, a first guide component 111, and a first paper stop structure 112; A second side paper stopper frame 120 and a second guide member 121; A third side paper stop frame 130 and a third paper stop structure 131; A fourth side paper stop frame 140, a fourth paper stop structure 141, and a paper pushing cylinder 142; Paper suction assembly 200, lifting cylinder 210, vacuum suction cup 220; The frame 300, the slide rail 310, and the first screw rod 320; The frame body 400, the sliding member 410, the third nut 420, the adjustment assembly 430, and the second screw rod 431; Paper feeding assembly 500 , pressure wheel 510 , and conveying belt 520 . DETAILED DESCRIPTION

[0020] Combine the following Figures 1 to 9 The embodiments of the present application are described in detail, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0021] In the description of the present application, it should be understood that the terms "center", "middle", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0022] In the description of this application, "several" means more than one, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0023] In the description of this application, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] In the description of the present application, if there is a description with reference to the terms "one embodiment", "some embodiments", "an embodiment", "some examples", "some embodiments", "illustrative embodiment", "example", "specific example", "some examples", etc., it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0025] An embodiment of the present application provides a paperboard conveying device, including a paper feeding mechanism 100 and a paper suction assembly 200 .

[0026] The paper feeding mechanism 100 includes a first side frame assembly and a second side frame assembly with adjustable spacing, the first side frame assembly includes a first side paper stop frame 110 and a first guide component 111, the second side frame assembly includes a second side paper stop frame 120 and a second guide component 121, a storage space for stacking paperboards is formed between the first side paper stop frame 110 and the second side paper stop frame 120, the first side paper stop frame 110 is provided with a first paper stop structure 112 on a side facing the storage space, the second side paper stop frame 120 is provided with a second paper stop structure on a side facing the storage space, the first paper stop structure A paper outlet is formed between the first guide component 111 and the second paper blocking structure, the first guide component 111 and the second guide component 121, both of which extend along the paper outlet direction, and both of which extend to the side of the paper feeding mechanism. A paper feeding channel is formed between the first guide component 111 and the second guide component 121, and the paper feeding channel is located below the paper outlet. The paper suction assembly 200 can suck up a single cardboard at the bottom of the stacked cardboard in the storage space and place the single cardboard on the paper feeding channel.

[0027] The spacing between the first side frame assembly and the second side frame assembly of the paperboard conveying mechanism can be adjusted, that is, the spacing between the first side paper stop frame 110 and the second side paper stop frame 120 can be adjusted to store paperboards of different sizes. The first paper stop structure 112 and the second paper stop structure are used to hold the stacked paperboards in the storage space. A paper outlet is formed between the first paper stop structure 112 and the second paper stop structure. The paper feeding channel formed between the first guide component 111 and the second guide component 121 can convey the paperboard in the paper outlet direction. The first paper stop structure 112 and the second paper stop structure can follow the first side paper stop frame 110 and The second side paper stop frame 120 is adjusted to convey cardboards of different sizes. The paper feeding channel is located below the paper outlet. The paper suction assembly 200 can suck the single cardboard at the bottom of the stacked cardboards in the storage space one by one, and take the single cardboard out of the paper outlet and place it on the paper feeding channel to realize the conveyance of the single cardboard. While the cardboard is taken out from the paper outlet, the first paper stop structure 112 and the second paper stop structure can pre-fold the single cardboard. The storage space of the cardboard conveying mechanism can hold stacked cardboards, and there is no need for workers to add cardboards multiple times. It has strong adaptability and can stably obtain single cardboards and transport them.

[0028] It can be understood that the first guide component 111 and the second guide component 121 are both L-shaped guide components. The horizontal part of the L-shaped guide component is used to support a single cardboard to prevent the single cardboard from falling, and the vertical part of the L-shaped guide component plays a limiting role while transporting the single cardboard, ensuring that the single cardboard is located in the paper feeding channel and stably transported along the paper output direction.

[0029] Reference Figures 1 to 3In some embodiments, the cardboard conveying device includes a frame 300, and the paper feeding mechanism 100 includes a frame body 400 movably connected to the frame 300, and the frame body 400 can reciprocate relative to the frame 300 along the paper feeding direction of the paper feeding channel, so that when the cardboard conveying device is installed on the paper packaging machine, by adjusting the positions of the frame body 400 and the frame 300, the paper outlet ends of the first guide component 111 and the second guide component 121 can accurately extend into the entrance of the paper packaging machine, the first side paper stop frame 110 and the second side paper stop frame 120 are movably connected to the frame body 400, the frame body 400 stably supports the first side paper stop frame 110 and the second side paper stop frame 120, and by adjusting the first side paper stop frame 110 and the second side paper stop frame 120 movably connected to the frame body 400 to move toward or away from each other to adapt to cardboards of different sizes.

[0030] Reference Figure 1 and Figure 4 In some embodiments, an adjustment assembly 430 is provided on the frame body 400, and the adjustment assembly 430 includes a second screw 431 provided on the frame body 400, and the second screw 431 is arranged along a paper feeding direction perpendicular to the paper feeding channel. A first nut cooperating with the second screw 431 is provided on the first side frame assembly, and a second nut cooperating with the second screw 431 is provided on the second side frame assembly, so as to realize the movable connection between the first side paper stop frame 110 and the second side paper stop frame 120 and the frame body 400.

[0031] Reference Figures 1 to 3 In some embodiments, a sliding component 410 is provided on the frame body 400, and a slide rail 310 cooperating with the sliding component 410 is provided on the frame 300. The slide rail 310 is arranged along the paper feeding direction of the paper feeding channel, so that when the cardboard conveying device is installed on the paper packaging machine, the distance between the frame body 400 and the paper packaging machine can be easily adjusted. Specifically, the sliding component 410 is two slide plates arranged on the frame body 400, and the slide rail 310 is provided with a pressure block at both ends along the paper discharge direction. The pressure block is used to press the sliding component 410 after the adjustment is completed, so as to realize the frame body 400 Fixed on the frame 300, the slide rail 310 is also provided with a baffle arranged along the paper output direction, and the baffle is used to limit the slide plate on the slide rail 310 to prevent the frame body 400 from slipping out of the frame 300 when the frame body 400 is moved. It can be understood that in some other embodiments, the sliding component 410 can also be a pulley or a slider provided at the bottom of the frame body 400, and the slide rail 310 cooperates with the pulley or the slider to facilitate the frame body 400 to slide relative to the frame 300.

[0032] Reference Figures 1 to 3In some embodiments, a first screw 320 is provided on the frame 300 along the paper discharge direction, and a third nut 420 matched with the first screw 320 is provided on the frame body 400. The third nut 420 can be moved along the paper discharge direction by rotating the first screw 320, thereby driving the frame body 400 to move along the paper discharge direction, thereby accurately adjusting the specific position of the paper feeding mechanism, so that the paper discharge ends of the first guide component 111 and the second guide component 121 can accurately extend into the entrance of the paper packaging machine. Specifically, a hand wheel is installed on the frame 300, and an adjusting rod is connected to the hand wheel. The adjusting rod is coaxially arranged with the first screw 320. By rotating the hand wheel, the first screw 320 is driven to rotate axially through the adjusting rod, thereby adjusting the specific position of the frame body 400. It can be understood that in other embodiments, the relative position between the frame body 400 and the frame 300 can be accurately controlled by setting a sprocket and a chain, or by a motor drive.

[0033] Reference Figure 1 and Figure 8 In some embodiments, a third side paper stop frame 130 is provided on the frame body 400 on one side of the paper feeding direction facing the paper feeding channel, the third side paper stop frame 130 is located between the first side paper stop frame 110 and the second side paper stop frame 120, the third side paper stop frame 130 and the first side paper stop frame 110 and the second side paper stop frame 120 jointly enclose a storage space, the third side paper stop frame 130 is provided with a third paper stop structure 131 on the side facing the storage space, the third paper stop structure 131, the first paper stop structure 112 and the second paper stop structure are located on the same plane, the third side paper stop frame 130 and the first side paper stop frame 110 and the second side paper stop frame 120 jointly support the stacked cardboard to prevent the stacked cardboard in the storage space from tipping over, the third paper stop structure 131, the first paper stop structure 112 and the second paper stop structure jointly support the stacked cardboard, and when the cardboard is taken out from the paper outlet, the first paper stop structure 112, the second paper stop structure and the third paper stop structure 131 can simultaneously pre-fold the single cardboard.

[0034] Reference Figure 1 , Figure 4 and Figure 6 In some embodiments, the paper suction assembly 200 includes a lifting cylinder 210 installed on the frame body 400, and a vacuum suction cup 220 is provided at the output end of the lifting cylinder 210. The vacuum suction cup 220 is located below the paper outlet to suck the single cardboard at the bottom of the stacked cardboard and place the single cardboard on the paper feeding channel.

[0035] Reference Figure 1 and Fig. 9In some embodiments, a paper feeding assembly 500 is provided on one side of the frame body 400 facing the paper feeding direction of the paper feeding channel. The paper feeding assembly 500 is located between the first guide component 111 and the second guide component 121. The paper feeding assembly 500 includes a pressure wheel 510 and a conveyor belt 520 arranged along the paper feeding direction of the paper feeding channel. An auxiliary channel for conveying a single cardboard is formed between the pressure wheel 510 and the conveyor belt 520. The auxiliary channel and the paper feeding channel are located on the same plane. After the single cardboard entering the paper feeding channel enters the paper feeding assembly 500, the single cardboard is processed by the conveyor belt 520 and conveyed into the paper discharger. The outer ring of the pressure wheel 510 is embossed. The pressure wheel 510 is used to assist the conveyor belt 520 in feeding paper. At the same time, the pressure wheel 510 and the conveyor belt 520 can level a partial area of ​​the single cardboard to prevent the cardboard from deforming.

[0036] Reference Figure 1 and Figure 7 In some embodiments, a fourth side paper stop frame 140 is provided on the frame body 400 on a side away from the paper feeding direction of the paper feeding channel, the fourth side paper stop frame 140 is located between the first side paper stop frame 110 and the second side paper stop frame 120, the fourth side paper stop frame 140 and the first side paper stop frame 110 and the second side paper stop frame 120 together form a storage space, the fourth side paper stop frame 140 is provided with a fourth paper stop structure 141 on a side facing the storage space, the fourth paper stop structure 141, the first paper stop structure 112 and the second paper stop structure are located on the same plane, the fourth side paper stop frame 140 and the first side paper stop frame 110 and the second side paper stop frame 120 jointly support the stacked cardboard to prevent the stacked cardboard in the storage space from tipping over, the fourth paper stop structure 141, the first paper stop structure 112 and the second paper stop structure jointly support the stacked cardboard, and when the cardboard is taken out from the paper outlet, the first paper stop structure 112, the second paper stop structure and the fourth paper stop structure 141 can simultaneously pre-fold the single cardboard.

[0037] It can be understood that, in some embodiments, the first paper stop structure 112 can be a round rod provided on the side of the first side paper stop frame 110 facing the storage space, and the round rod is arranged along the length direction of the first guide component 111. In other embodiments, the first paper stop structure 112 can also be a protrusion integrally formed on the side of the first side paper stop frame 110 facing the storage space, and the protrusion is arranged along the length direction of the first guide component 111; the second paper stop structure is similar to the structure of the first paper stop structure 112, which will not be repeated here; the third paper stop structure 131 can be a round rod provided on the side of the third side paper stop frame 130 facing the storage space, and the round rod is arranged along the width direction of the third side paper stop frame 130. In other embodiments, the third paper stop structure 131 can also be a protrusion integrally formed on the side of the third side paper stop frame 130 facing the storage space, and the protrusion is arranged along the width direction of the first guide component 111. The fourth paper stop structure 141 is similar to the structure of the third paper stop structure 131, which will not be repeated here.

[0038] Reference Figure 1 and Figure 7 In some embodiments, a paper pushing cylinder 142 is provided on the fourth side paper stop frame 140, and the paper pushing cylinder 142 is arranged along the paper feeding direction of the paper feeding channel. The paper pushing cylinder 142 is used to push the paperboard located below the paper outlet in the paper feeding channel into the auxiliary channel.

[0039] An embodiment of the present application also provides a paper packing machine, comprising a paper packing machine body and the cardboard conveying device in the above embodiment, wherein a paper feeding mechanism 100 is mounted on the paper packing machine body, and a first guide component 111 and a second guide component 121 both extend to the entrance of the paper packing machine body. The paper packing machine using the cardboard conveying device can stably obtain cardboard and has high working efficiency.

[0040] The above is a detailed description of the implementation methods of the present application in conjunction with the accompanying drawings, but the present application is not limited to the above implementation methods. Various changes can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A cardboard conveying device, characterized in that: include: A paper feeding mechanism, comprising a first side frame assembly and a second side frame assembly with adjustable spacing, the first side frame assembly comprising a first side paper stop frame and a first guide component, the second side frame assembly comprising a second side paper stop frame and a second guide component, a storage space for stacking paperboards is formed between the first side paper stop frame and the second side paper stop frame, the first side paper stop frame is provided with a first paper stop structure on a side facing the storage space, the second side paper stop frame is provided with a second paper stop structure on a side facing the storage space, a paper outlet is formed between the first paper stop structure and the second paper stop structure, the first guide component and the second guide component both extend to the side of the paper feeding mechanism, a paper feeding channel is formed between the first guide component and the second guide component, and the paper feeding channel is located below the paper outlet; The paper suction component can suck the single cardboard at the bottom of the cardboard stack in the storage space and place the single cardboard in the paper feeding channel.

2. The cardboard conveying device according to claim 1, characterized in that: It includes a frame, the paper feeding mechanism includes a frame body movably connected to the frame, the frame body can reciprocate relative to the frame along the paper feeding direction of the paper feeding channel, and the first side paper stop frame and the second side paper stop frame are movably connected to the frame body.

3. The cardboard conveying device according to claim 2, characterized in that: The paper feeding mechanism includes an adjusting component, which includes a first screw rod arranged on the frame body, the first screw rod is arranged along a paper feeding direction perpendicular to the paper feeding channel, the first side frame assembly is provided with a first nut cooperating with the first screw rod, and the second side frame assembly is provided with a second nut cooperating with the first screw rod.

4. The cardboard conveying device according to claim 2, characterized in that: The frame body is provided with a sliding component, the frame is provided with a slide rail matched with the sliding component, and the slide rail is arranged along the paper feeding direction of the paper feeding channel.

5. The cardboard conveying device according to claim 2, characterized in that: A third side paper stop frame is provided on the frame body on the side facing the paper feeding direction of the paper feeding channel, the third side paper stop frame is located between the first side paper stop frame and the second side paper stop frame, the third side paper stop frame, the first side paper stop frame and the second side paper stop frame together form a storage space, the third side paper stop frame is provided with a third paper stop structure on the side facing the storage space, and the third paper stop structure, the first paper stop structure and the second paper stop structure are located on the same plane.

6. The cardboard conveying device according to claim 2, characterized in that: The paper suction assembly comprises a lifting cylinder mounted on the frame body, a vacuum suction cup is arranged at the output end of the lifting cylinder, and the lifting cylinder is located below the paper outlet.

7. The cardboard conveying device according to claim 2, characterized in that: The frame body is provided with a paper feeding assembly on one side of the paper feeding direction facing the paper feeding channel, the paper feeding assembly is located between the first guide component and the second guide component, the paper feeding assembly includes a pressure wheel and a conveying belt arranged along the paper feeding direction of the paper feeding channel, an auxiliary channel for conveying a single paperboard is formed between the pressure wheel and the conveying belt, and the auxiliary channel and the paper feeding channel are located on the same plane.

8. The cardboard conveying device according to claim 7, characterized in that: A fourth side paper stop frame is provided on the frame body on the side of the paper feeding direction away from the paper feeding channel, the fourth side paper stop frame is located between the first side paper stop frame and the second side paper stop frame, the fourth side paper stop frame, the first side paper stop frame and the second side paper stop frame together form a storage space, the fourth side paper stop frame is provided with a fourth paper stop structure on the side facing the storage space, and the fourth paper stop structure, the first paper stop structure and the second paper stop structure are located on the same plane.

9. The cardboard conveying device according to claim 8, characterized in that: The fourth side paper stop frame is provided with a paper pushing cylinder, which is arranged along the paper feeding direction of the paper feeding channel and is used to push the paperboard located below the paper outlet in the paper feeding channel into the auxiliary channel.

10. A paper packaging machine, characterized in that: It comprises a paper packing machine body and a cardboard conveying device according to any one of claims 1 to 9, wherein the paper feeding mechanism is mounted on the paper packing machine body, and the first guide component and the second guide component both extend to the entrance of the paper packing machine body.

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