Carton feeding system and method

Abstract

The application discloses a carton feeding system and method, which comprises a first conveying system, a second conveying system, a stacking mechanism for stacking single cartons on the first conveying system to the second conveying system, a carton detection mechanism for detecting the flatness of the single cartons, a rejection mechanism for rejecting the single cartons with quality defects, a first clamping mechanism for clamping the left and right positions of the carton stack so that the front and back positions of the carton stack are in the same vertical plane, a feeding mechanism arranged at the conveying end of the second conveying system and capable of driving the carton stack to ascend and descend, and a second clamping mechanism for clamping the front and back positions of the carton stack when the feeding mechanism is in the second position so that the left and right positions of the carton stack are in the same vertical plane. The alignment and arrangement of the carton stack are completely realized by the mechanical structure without manual operation, and the labor intensity is greatly reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of conveying devices, in particular to a carton feeding system and method. BACKGROUND

[0002] Cartons are the most widely used packaging products. According to the different materials, there are corrugated cartons, single-layer paperboard cartons, etc., and various specifications and models.

[0003] Flat cartons need to be folded and unfolded to hold objects. Therefore, devices for unfolding folded cartons have appeared on the market. However, during the conveying of flat cartons to the carton folding device, manual handling of individual cartons to the carton folding device is required, which seriously restricts the efficiency of product packaging and wastes a lot of manpower and time. The most critical problem is that due to manual handling of cartons to the carton folding device, the positions of the cartons are not uniform, and even some cartons are horizontally and obliquely arranged, resulting in a large deviation between the carton folding device and the specific unfolding position of the carton, and the carton cannot be folded.

[0004] In addition, if the carton has many pits, protrusions, and even a surface defect, it will affect the quality of the unfolded carton. When the number of cartons is large, it is very inconvenient and inefficient to manually judge the surface condition of the carton. SUMMARY

[0005] Therefore, the technical problem to be solved by the present application is to overcome the defects of non-uniform positions of flat cartons during conveying to the carton folding device and the low efficiency of manual judgment of the surface condition of the carton, so as to provide a carton feeding system and method.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0007] A carton feeding system comprises:

[0008] A first conveying system for driving a single carton to convey in a first direction;

[0009] A second conveying system for driving a stacked carton pile to convey in a second direction, the second conveying system being perpendicular or collinear with the first conveying system;

[0010] A stacking mechanism arranged between the first conveying system and the second conveying system for stacking the single carton on the first conveying system onto the second conveying system;

[0011] A carton detection mechanism arranged on the first conveying system for detecting the flatness of the single carton;

[0012] A rejection mechanism is arranged on the first conveying system and located at the rear section of the carton detection mechanism, and is used to reject the single carton with quality defects;

[0013] A first clamping mechanism is arranged on the second conveying system, and is used to clamp the left and right positions of the carton stack so that the front and rear positions of the carton stack are in the same vertical plane;

[0014] A feeding mechanism is arranged at the conveying end of the second conveying system, and can drive the carton stack to ascend and descend, and has a first position and a second position; when the feeding mechanism is in the first position, the feeding mechanism is connected with the second conveying system and receives the carton stack conveyed by the second conveying system, and when the feeding mechanism is in the second position, the feeding mechanism can lift the carton stack;

[0015] A second clamping mechanism is arranged on the feeding mechanism, and is used to clamp the front and rear positions of the carton stack when the feeding mechanism is in the second position, so that the left and right positions of the carton stack are in the same vertical plane;

[0016] A carrying mechanism is located above the feeding mechanism, and is used to carry the single carton to the next link one by one after the second clamping mechanism clamps the carton stack.

[0017] Further optimization technical solutions, the first clamping mechanism comprises:

[0018] A first clamping mechanism frame is arranged above the periphery of the second conveying system;

[0019] A first fixed clamping structure comprises a fixed column, a fixed plate and a first fixed clamping plate; the fixed column is arranged on the first clamping mechanism frame in the left and right directions, the fixed plate is fixedly arranged on the fixed column, and the first fixed clamping plate is fixedly arranged on the fixed plate and extends downward;

[0020] A first movable clamping structure, the moving direction of the first movable clamping structure is perpendicular to the conveying direction of the second conveying system, and the first movable clamping structure moves relative to the first fixed clamping structure to clamp the left and right positions of the carton stack.

[0021] Further optimization technical solutions, the first movable clamping structure comprises:

[0022] A first cylinder, the fixed end of the first cylinder is arranged on the fixed plate, and the first cylinder is arranged in the left and right directions;

[0023] A movable plate is connected with the piston rod end of the first cylinder, and the movable plate moves through the fixed column and can move left and right along the fixed column;

[0024] At least one first movable clamping plate is fixedly arranged on the movable plate and extends downward.

[0025] Further optimize the technical scheme, the feeding mechanism comprises:

[0026] The feeding mechanism rack;

[0027] The lifting mechanism is arranged at the bottom end position inside the feeding mechanism rack; the lifting mechanism comprises a lifting cylinder and a lifting plate, the lifting cylinder is arranged vertically, and the piston rod end of the lifting cylinder is connected with the lifting plate.

[0028] Further optimize the technical scheme, the second clamping mechanism comprises:

[0029] The fixed baffle is arranged behind the feeding mechanism rack;

[0030] A pair of second cylinder positioning plates are arranged and extended forward along the feeding mechanism rack respectively;

[0031] A pair of second cylinders are positioned on the second cylinder positioning plates respectively, and the piston rod end of each second cylinder is connected with a connecting plate;

[0032] A pair of second movable clamping plates are connected and positioned on the connecting plates through connecting rods, and the second movable clamping plates cooperate with the fixed baffle to clamp and arrange the carton stack.

[0033] Further optimize the technical scheme, the two side walls of the feeding mechanism rack are further provided with a carton supporting structure, the carton supporting structure comprises a toggle plate and a fixed block, a through hole is formed in the feeding mechanism rack, the fixed block is fixed on the side wall of the feeding mechanism rack, one end of the toggle plate is movably arranged on the fixed block, and the other end of the toggle plate passes through the through hole and extends into the inside of the feeding mechanism rack;

[0034] During the lifting of the carton stack by the feeding mechanism, the toggle plate is extruded by the carton stack, so that the toggle plate rotates upward and is located in the through hole;

[0035] When the carton stack is moved above the toggle plate by the feeding mechanism, the toggle plate extends out of the through hole and rotates to a horizontal state under the action of gravity, so as to support the bottom of the carton stack.

[0036] Further optimize the technical scheme, the first conveying system comprises a first single carton conveying mechanism, a second single carton conveying mechanism, a third single carton conveying mechanism and a fourth single carton conveying mechanism arranged in sequence along the conveying direction, and the first single carton conveying mechanism and the second single carton conveying mechanism are both conveying belt conveying mechanisms; the conveying belt of the first single carton conveying mechanism is located in the middle part, and the width of the conveying belt of the first single carton conveying mechanism is smaller than the width of the carton; the conveying belt of the second single carton conveying mechanism is provided with two sections and is located on the left and right sides respectively, and there is a spacing between the two sections of the conveying belt of the second single carton conveying mechanism;

[0037] The carton detection mechanism comprises a first carton detection mechanism and a second carton detection mechanism;

[0038] The first carton detection mechanism comprises a first distance detector positioning frame and two rows of first distance detector groups, and the two rows of first distance detector groups are arranged on the left and right sides of the conveying belt of the first single carton conveying mechanism respectively; the first distance detector group comprises a first distance detector arranged at the bottom end of the first distance detector positioning frame and a second distance detector arranged directly below the first distance detector positioning frame; the first distance detector is used for detecting the flatness of the top end face of the carton, and the second distance detector is used for detecting the flatness of the bottom end face of the carton;

[0039] The second carton detection mechanism comprises a second distance detector positioning frame and two rows of second distance detector groups, and the two rows of second distance detector groups are arranged between the conveying belts of the two sections of the second single carton conveying mechanism respectively; the second distance detector group comprises a third distance detector arranged at the bottom end of the second distance detector positioning frame and a fourth distance detector arranged directly below the second distance detector positioning frame; the third distance detector is used for detecting the flatness of the top end face of the carton, and the fourth distance detector is used for detecting the flatness of the bottom end face of the carton.

[0040] Further optimize the technical scheme, the rejecting mechanism comprises:

[0041] A rejecting cylinder positioning plate is arranged beside the third single carton conveying mechanism;

[0042] A rejecting cylinder is arranged on the rejecting cylinder positioning plate, and the extension direction of the rejecting cylinder is perpendicular to the conveying direction of the third single carton conveying mechanism;

[0043] A push plate is arranged on the piston rod of the rejecting cylinder.

[0044] Further optimize the technical scheme, the handling mechanism comprises:

[0045] A handling mechanism rack is arranged above the feeding mechanism;

[0046] A chuck positioning frame is connected to the carrying mechanism frame through connecting columns;

[0047] A third cylinder is positioned on the chuck positioning frame, and a connecting block is connected to the piston rod end of the third cylinder, and a fourth cylinder positioning block is connected to the top end of the connecting block;

[0048] Two fourth cylinders are respectively positioned on the left and right sides of the fourth cylinder positioning block, and the piston rods of the two fourth cylinders are positioned on the left and right sides of the connecting block;

[0049] A chuck fixing plate is connected to the piston rods of the fourth cylinders;

[0050] A plurality of chucks are respectively positioned on the bottom end of the chuck fixing plate, and each chuck is connected to the vacuum pumping system.

[0051] S1. A single paper box is carried to the first conveying system by the mechanical hand, and the flatness of the paper box is detected by the paper box detection mechanism during the conveying process; when the paper box detection mechanism detects that the paper box has defects, the paper box detection mechanism feeds back the detection information to the control system, and the control system controls the rejection mechanism to reject the defective paper box out of the first conveying system; when the paper box detection mechanism does not detect the abnormality of the paper box, the paper box continues to convey;

[0052] S2. When the paper box is conveyed to the intersection position of the first conveying system and the second conveying system, the stacking mechanism carries the paper box to the second conveying system and stacks each paper box into a paper box stack;

[0053] S3. When the paper box is stacked to a set height, the second conveying system operates to convey the paper box stack;

[0054] S4. When the paper box stack is conveyed to the position of the first clamping mechanism, the first clamping mechanism clamps the left and right positions of the paper box stack, so that the front and rear positions of the paper box stack are in the same vertical plane;

[0055] S5. The paper box stack clamped at the left and right positions is conveyed to the feeding mechanism, and the feeding mechanism drives the paper box stack to rise;

[0056] S6. The front and rear positions of the paper box stack are clamped by the second clamping mechanism, so that the left and right positions of the paper box stack are in the same vertical plane;

[0057] S7. The single paper box is carried to the next link by the carrying mechanism.

[0058] The technical scheme of the present application has the following advantages:

[0059] 1. The paper box feeding system provided by the application utilizes a paper box detection mechanism to detect the flatness of the upper surface and the lower surface of a single paper box before stacking the paper box stack, so as to timely find out the conditions of pits, protrusions or defects of the paper box, and utilize the subsequent rejection mechanism to reject the single paper box from the first conveying system when these conditions occur, so as to ensure that the quality of the stacked paper box meets the production requirements, and the whole process is automatically detected, rejected and stacked, without the need for manual judgment of the quality of the paper box, greatly reducing the labor intensity.

[0060] After the paper box is stacked, the first clamping mechanism is utilized to clamp the left-right direction of the paper box stack, so that the paper box is aligned and arranged in the left-right direction, and after the paper box is lifted by the feeding mechanism, the second clamping mechanism is utilized to clamp the front-rear direction of the paper box, so that the paper box is aligned and arranged in the front-rear direction, and then the carrying mechanism is utilized to feed the single paper box, so that when the paper box is conveyed to the paper box folding device, the position to be folded of the paper box is adapted to the position of the paper box folding device, and the condition that the paper box folding device cannot fold the paper box does not occur. And the alignment and arrangement of the paper box stack are completely performed by the mechanical structure, without the need for manual operation, greatly reducing the labor intensity.

[0061] 2. The paper box feeding system provided by the application, when the piston rod of the first cylinder is elongated, the movable plate and the first movable clamping plate can move left and right relative to the first fixed clamping plate, so as to clamp the paper box stack and position the left-right direction of the paper box stack. The second movable clamping plate moves forward and backward relative to the fixed blocking plate, and the second movable clamping plate and the fixed blocking plate cooperate to clamp the paper box stack. And the clamping of the paper box stack by the second movable clamping plate is performed after the paper box stack is lifted, the bottom end position of the second movable clamping plate is higher than the height of the paper box stack on the second conveying system, so that the second movable clamping plate does not affect the paper box stack entering the lifting plate of the feeding mechanism.

[0062] 3. The paper box feeding system provided by the application, wherein the two side walls of the feeding mechanism rack are further provided with a paper box supporting structure, the paper box supporting structure comprises a poking plate and a fixing block, one end of the poking plate is movably arranged on the fixing block, and the other end of the poking plate passes through a through hole and extends into the inside of the feeding mechanism rack. The paper box stack is first preliminarily lifted, the paper box stack extrudes the poking plate in the lifting process, and a single paper box can be adsorbed and carried by the carrying mechanism at this time. After the paper box stack is carried for a certain number, in order to speed up the carrying speed, the feeding mechanism again lifts the remaining paper box stack upwards at this time, so that the position of the paper box stack exceeds the position of the poking plate, and the poking plate is reset under the action of gravity at this time to support the paper box stack. Then the lifting cylinder of the feeding mechanism can drive the lifting plate to descend to support the next batch of paper box stacks, and after the batch of paper box stacks is supported, the lifting plate is moved upwards again, extrudes the poking plate in the original state, and the number of paper boxes to be carried is increased. The paper boxes are fed in the above sequence, and when the number of paper boxes to be carried is reduced, the poking plate can be very ingeniously used to support the part of the paper boxes, so that the feeding mechanism can timely support the next batch of paper boxes and speed up the feeding speed of the paper boxes.

[0063] 4. The paper box feeding system provided by the application, wherein when the paper box is conveyed to the first single paper box conveying mechanism, the flatness of the top end face and the bottom end face on both sides of the paper box is detected first; when the paper box is conveyed to the second single paper box conveying mechanism, the flatness of the top end face and the bottom end face in the middle of the paper box is detected again, so that the paper box is detected in all directions, and the problem that the bottom end of the paper box cannot be detected due to the adhesion of the paper box to the bottom end of the conveying belt can be effectively avoided. BRIEF DESCRIPTION OF DRAWINGS

[0064] In order to more clearly illustrate the specific embodiments of the application or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0065] Figure 1 The structure schematic diagram of the first conveying system and the second conveying system of the paper box feeding system provided by the application when the first conveying system and the second conveying system are arranged vertically.

[0066] Figure 2 The structure schematic diagram of the first conveying system and the second conveying system of the paper box feeding system provided by the application when the first conveying system and the second conveying system are arranged vertically.

[0067] Figure 3 The first perspective structure schematic diagram of the second conveying system, the first clamping mechanism, the feeding mechanism, the second clamping mechanism and the carrying mechanism of the paper box feeding system provided by the application.

[0068] Figure 4 A second perspective view of a second conveying system, a first clamping mechanism, a feeding mechanism, a second clamping mechanism, and a carrying mechanism of a carton feeding system according to the present application;

[0069] Figure 5 A third perspective view of a second conveying system, a first clamping mechanism, a feeding mechanism, a second clamping mechanism, and a carrying mechanism of a carton feeding system according to the present application;

[0070] Figure 6 A structural view of a first clamping mechanism of a carton feeding system according to the present application;

[0071] Figure 7 A structural view of a carrying mechanism of a carton feeding system according to the present application;

[0072] Figure 8 A structural view of a first conveying system, a carton detecting mechanism, and a rejecting mechanism of a carton feeding system according to the present application;

[0073] Figure 9 A structural view of a carton supporting structure of a carton feeding system according to the present application;

[0074] Figure 10 A structural view of a carton feeding system according to the present application when conveying cartons;

[0075] Figure 11 A structural view of a feeding mechanism of a carton feeding system according to the present application when jacking a carton stack;

[0076] Figure 12 A structural view of a feeding mechanism of a carton feeding system according to the present application when a carton touches a carton supporting structure while jacking a carton stack;

[0077] Figure 13 A structural view of a carton supporting structure of a carton feeding system according to the present application when supporting a carton stack.

[0078] Reference signs:

[0079] 1. a first conveying system, 11. a first single carton conveying mechanism, 12. a second single carton conveying mechanism, 13. a third single carton conveying mechanism, 14. a fourth single carton conveying mechanism;

[0080] 2. a stacking mechanism;

[0081] 3. a second conveying system, 31. a first carton stack conveying mechanism, 311. a position sensor, 32. a second carton stack conveying mechanism, 33. a third carton stack conveying mechanism;

[0082] 4. The first clamping mechanism, 41, the first clamping mechanism frame, 42, the fixed column, 43, the fixed plate, 44, the first fixed clamping plate, 45, the movable plate, 46, the first movable clamping plate, 47, the first cylinder;

[0083] 5. The feeding mechanism, 51, the feeding mechanism frame, 52, the lifting mechanism, 521, the lifting plate, 522, the lifting cylinder, 53, the carton support structure, 531, the pushing plate, 532, the fixed block;

[0084] 6. The second clamping mechanism, 61, the second cylinder positioning plate, 62, the second cylinder, 63, the connecting plate, 64, the connecting rod, 65, the second movable clamping plate, 66, the fixed baffle;

[0085] 7. The carrying mechanism, 71, the carrying mechanism frame, 711, the sliding rail, 712, the rectangular opening, 72, the suction cup positioning frame, 73, the third cylinder, 74, the connecting block, 75, the fourth cylinder, 76, the suction cup fixed plate, 77, the suction cup, 78, the sliding block, 79, the fourth cylinder positioning block;

[0086] 8. The first carton detection mechanism, 81, the first distance detector, 82, the first distance detector positioning frame, 83, the second distance detector;

[0087] 9. The second carton detection mechanism, 91, the third distance detector, 92, the second distance detector positioning frame, 93, the fourth distance detector;

[0088] 10. The rejection mechanism, 101, the rejection cylinder, 102, the rejection cylinder positioning plate, 103, the push plate;

[0089] 100. The carton. DETAILED DESCRIPTION

[0090] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0091] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third", "fourth" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0092] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0093] In addition, the technical features involved in the different embodiments of the application described below can be combined with each other as long as there is no conflict between them.

[0094] Embodiment 1

[0095] As Figures 1 to 13 indicated in a specific embodiment of a carton feeding system, it includes a first conveying system 1, a second conveying system 3, a stacking mechanism 2, a carton detection mechanism, a rejection mechanism 10, a first clamping mechanism 4, a feeding mechanism 5, a second clamping mechanism 6 and a carrying mechanism 7.

[0096] The first conveying system 1 is used to drive the single carton to be conveyed in the first direction.

[0097] The second conveying system 3 is used to drive the stacked carton stack to be conveyed in the second direction, and the second conveying system 3 is perpendicular to or collinear with the first conveying system 1. As Figure 2 indicated, the second conveying system 3 is arranged collinearly with the first conveying system 1, Figure 2 the stacking mechanism in Figure 1 is the same as the stacking mechanism in Figure 2 , so Figure 1 the stacking mechanism is omitted. When the second conveying system 3 is arranged collinearly with the first conveying system 1, the overall production line will be relatively long, in order to reduce the length of the production line and accommodate it in a smaller space, the second conveying system 3 can be arranged perpendicular to the first conveying system 1, as

[0098] The stacking mechanism 2 is arranged between the first conveying system 1 and the second conveying system 3, and is used for stacking the single cartons on the first conveying system 1 to the second conveying system 3.

[0099] The carton detection mechanism is arranged on the first conveying system 1, and is used for detecting the flatness of the single carton.

[0100] The rejection mechanism 10 is arranged on the first conveying system 1 and located at the rear section of the carton detection mechanism, and is used for rejecting the single carton with quality defects.

[0101] The first clamping mechanism 4 is arranged on the second conveying system 3, and is used for clamping the left and right positions of the carton stack, so that the front and rear positions of the carton stack are in the same vertical plane.

[0102] The feeding mechanism 5 is arranged at the conveying end of the second conveying system 3, and can drive the carton stack to ascend and descend, and has a first position and a second position; when the feeding mechanism 5 is in the first position, the feeding mechanism 5 is connected with the second conveying system 3 and receives the carton stack conveyed by the second conveying system 3; when the feeding mechanism 5 is in the second position, the feeding mechanism 5 can lift the carton stack.

[0103] The second clamping mechanism 6 is arranged on the feeding mechanism 5, and is used for clamping the front and rear positions of the carton stack when the feeding mechanism 5 is in the second position, so that the left and right positions of the carton stack are in the same vertical plane.

[0104] The carrying mechanism 7 is located above the feeding mechanism 5, and is used for carrying the single carton to the next link one by one after the second clamping mechanism 6 clamps the carton stack.

[0105] The above-mentioned carton feeding system can detect the flatness of the upper surface and the lower surface of the single carton respectively by using the carton detection mechanism before stacking the carton stack, so as to timely find out the conditions of the carton with pits, protrusions or defects, and reject the single carton from the first conveying system 1 by using the subsequent rejection mechanism 10 when these conditions occur, so as to ensure that the quality of the stacked carton meets the production requirements, and the whole process is automatically detected, rejected and stacked, without the need for manual judgment of the quality of the carton, which greatly reduces the labor intensity.

[0106] After the cartons are stacked, the first clamping mechanism 4 is used to clamp the left and right directions of the carton stack, so that the cartons are aligned in the left and right directions and arranged, and after the cartons are lifted by the feeding mechanism 5, the second clamping mechanism 6 is used to clamp the front and rear directions of the cartons, so that the cartons are aligned in the front and rear directions and arranged, and then the carrying mechanism 7 is used to feed the single cartons, so that when the cartons are conveyed to the carton folding device, the folding position of the cartons is matched with the position of the carton folding device, and the carton folding device cannot fold the cartons. The alignment and arrangement of the carton stack are completely realized by the mechanical structure, without manual operation, which greatly reduces the labor intensity.

[0107] The first conveying system 1 includes a first single carton conveying mechanism 11, a second single carton conveying mechanism 12, a third single carton conveying mechanism 13 and a fourth single carton conveying mechanism 14 arranged in sequence along the conveying direction. The first conveying system 1 can be a belt conveying system or a transmission roller conveying system.

[0108] The second conveying system 3 includes a first carton stack conveying mechanism 31, a second carton stack conveying mechanism 32 and a third carton stack conveying mechanism 33 arranged in sequence along the conveying direction. The first carton stack conveying mechanism 31 is used to receive the cartons during stacking and convey the stacked carton stack; the second carton stack conveying mechanism 32 is connected with the first carton stack conveying mechanism 31 and used to receive the carton stack conveyed by the first carton stack conveying mechanism 31; and the third carton stack conveying mechanism 33 is connected with the second carton stack conveying mechanism 32 and used to receive the carton stack clamped by the first clamping mechanism 4.

[0109] As a specific embodiment, the first clamping mechanism 4 includes a first clamping mechanism frame 41, a first fixed clamping structure and a first movable clamping structure. The first clamping mechanism frame 41 is arranged outside the second conveying system 3, and includes four legs and a top frame. The first fixed clamping structure includes a fixed column 42, a fixed plate 43 and a first fixed clamping plate 44; the fixed column 42 is arranged on the first clamping mechanism frame 41 along the left and right directions, the fixed plate 43 is fixedly arranged on the fixed column 42, and the first fixed clamping plate 44 is fixedly arranged on the fixed plate 43 and extends downward. The moving direction of the first movable clamping structure is perpendicular to the conveying direction of the second conveying system 3, and the first movable clamping structure moves relative to the first fixed clamping structure to clamp the left and right positions of the carton stack.

[0110] In this embodiment, the first fixed clamping plate 44 extends downward, and the first fixed clamping plate 44 is used to position one direction of the carton stack, and cooperates with the first movable clamping structure to clamp the carton stack.

[0111] More specifically, the first movable clamping structure comprises a first cylinder 47, a movable plate 45 and a first movable clamping plate 46. The fixed end of the first cylinder 47 is arranged on the fixed plate 43, and the first cylinder 47 is arranged along the left-right direction. The movable plate 45 is connected with the piston rod end of the first cylinder 47, and the movable plate 45 movably passes through the fixed column 42 and can move left and right along the fixed column 42. The first movable clamping plate 46 is provided with at least one, which is fixedly arranged on the movable plate 45 and extends downward.

[0112] In the embodiment, when the piston rod of the first cylinder 47 is elongated, the movable plate 45 and the first movable clamping plate 46 can be driven to move left and right relative to the first fixed clamping plate 44, thereby clamping the carton stack and positioning the carton stack in the left-right direction.

[0113] As a specific embodiment, the feeding mechanism 5 comprises a feeding mechanism rack 51 and a lifting mechanism 52. The lifting mechanism 52 is arranged at the bottom end position inside the feeding mechanism rack 51. The lifting mechanism 52 comprises a lifting cylinder 522 and a lifting plate 521, the lifting cylinder 522 is arranged vertically, and the piston rod end of the lifting cylinder 522 is connected with the lifting plate 521. A position sensor is also arranged on the side wall of the feeding mechanism rack 51.

[0114] In the embodiment, after the carton stack conveyed from the first conveying system 1 moves to the position of the lifting plate 521, the position sensor senses the position of the carton stack, and then the lifting cylinder 522 controls the lifting plate 521 and the carton stack to rise.

[0115] As a specific embodiment, the second clamping mechanism 6 comprises a fixed baffle 66, a second cylinder positioning plate 61, a second cylinder 62 and a second movable clamping plate 65. The fixed baffle 66 is arranged behind the feeding mechanism rack 51. The second cylinder positioning plate 61 is provided with a pair of plates, which are respectively arranged along the feeding mechanism rack 51 and extend forward. The second cylinder 62 is provided with a pair of cylinders, which are respectively positioned on the second cylinder positioning plate 61, and the piston rod end of each second cylinder 62 is connected with a connecting plate 63. The second movable clamping plate 65 is provided with a pair of plates, which are respectively connected and positioned on the connecting plate 63 through a connecting rod 64, and the second movable clamping plate 65 cooperates with the fixed baffle 66 to clamp and arrange the carton stack.

[0116] In the embodiment, the connecting plate 63 is arranged as an L-shaped plate, which extends to the vertical axis of the feeding mechanism rack 51, so that the connecting rod 64 is located on the inner side of the feeding mechanism rack 51, and after the connecting rod 64 connects the second movable clamping plate 65, the second movable clamping plate 65 is located on the inner side of the feeding mechanism rack 51. The second movable clamping plate 65 moves back and forth relative to the fixed baffle 66, and the second movable clamping plate 65 cooperates with the fixed baffle 66 to clamp the carton stack.

[0117] If the feeding mechanism 5 is behind the lifting of the carton stack, and the carrying mechanism carries all the cartons on the feeding mechanism 5, the feeding mechanism 5 can only be lowered to receive the next batch of cartons. This way will cause the interruption of the feeding of the cartons, and the feeding speed of the cartons is low. In order to solve this technical problem, as a further improved embodiment, the paper box supporting structure 53 is further arranged on the two side walls of the feeding mechanism rack 51. The paper box supporting structure 53 comprises a poking plate 531 and a fixed block 532. The feeding mechanism rack 51 is provided with a through hole. The fixed block 532 is fixed on the side wall of the feeding mechanism rack 51. One end of the poking plate 531 is movably arranged on the fixed block 532. The other end of the poking plate 531 penetrates through the through hole and extends into the inside of the feeding mechanism rack 51. During the lifting of the carton stack by the feeding mechanism 5, the poking plate 531 is pressed by the carton stack, so that the poking plate 531 is turned upward and located in the through hole. When the carton stack is moved above the poking plate 531 by the feeding mechanism 5, the poking plate 531 extends out of the through hole and rotates to a horizontal state under the action of gravity, so as to support the bottom of the carton stack.

[0118] In the embodiment, the carton stack is first lifted preliminarily. The poking plate 531 is pressed by the carton stack during the lifting. At this time, the single carton can be carried by the carrying mechanism 7. When the carton stack is carried for a certain number, in order to speed up the carrying speed, the feeding mechanism 5 lifts the remaining carton stack again, so that the position of the carton stack exceeds the position of the poking plate 531. At this time, the poking plate 531 is reset under the action of gravity, and supports the carton stack. Then the lifting cylinder 522 of the feeding mechanism 5 can drive the lifting plate 521 to descend, receive the next batch of carton stack, move upward again, press the poking plate 531 according to the original state, and increase the number of cartons to be carried. According to the above sequence, the cartons are fed. When the number of cartons to be carried is reduced, the poking plate 531 can be very cleverly used to support the part of the cartons, so that the feeding mechanism 5 can timely receive the next batch of cartons, and the feeding speed of the cartons is increased.

[0119] As a specific embodiment, the first single carton conveying mechanism 11 and the second single carton conveying mechanism 12 are both conveying belt conveying mechanisms. The conveying belt of the first single carton conveying mechanism 11 is located in the middle, and the width of the conveying belt of the first single carton conveying mechanism 11 is smaller than the width of the carton. The conveying belt of the second single carton conveying mechanism 12 is provided with two sections and is located on the left and right sides respectively. The conveying belt of the two sections of the second single carton conveying mechanism 12 has a spacing therebetween.

[0120] The carton detection mechanism comprises a first carton detection mechanism 8 and a second carton detection mechanism 9.

[0121] The first carton detection mechanism 8 comprises a first distance detector positioning frame 82 and two rows of first distance detector groups, which are arranged on the left and right sides of the conveying belt of the first single carton conveying mechanism 11. The first distance detector group comprises a first distance detector 81 arranged at the bottom end of the first distance detector positioning frame 82 and a second distance detector 83 arranged directly below the first distance detector positioning frame 82. The first distance detector 81 is used for detecting the flatness of the top end face of the carton, and the second distance detector 83 is used for detecting the flatness of the bottom end face of the carton.

[0122] The second carton detection mechanism 9 comprises a second distance detector positioning frame 92 and two rows of second distance detector groups, which are arranged between the conveying belts of the two sections of the second single carton conveying mechanism 12. The second distance detector group comprises a third distance detector 91 arranged at the bottom end of the second distance detector positioning frame 92 and a fourth distance detector 93 arranged directly below the second distance detector positioning frame 92. The third distance detector 91 is used for detecting the flatness of the top end face of the carton, and the fourth distance detector 93 is used for detecting the flatness of the bottom end face of the carton.

[0123] It should be noted that the distance detector can be an ultrasonic detector, and other structures can be used. The distance detector emits ultrasonic waves to the carton and receives the reflected ultrasonic wave conditions to reflect the distance between the carton and the distance detector. When the distance between a single carton and the distance detector is detected to be greater than the set distance, it indicates that there is a protrusion at a certain position of the carton. When the distance between a single carton and the distance detector is detected to be less than the set distance, it indicates that there is a pit or a gap at a certain position of the carton.

[0124] In this embodiment, when the carton is conveyed to the first single carton conveying mechanism 11, the flatness of the top end face and the bottom end face on both sides of the carton is detected first. When the carton is conveyed to the second single carton conveying mechanism 12, the flatness of the top end face and the bottom end face in the middle of the carton is detected again, thereby performing comprehensive detection on the carton, which can effectively avoid the problem that the bottom end of the carton cannot be detected due to the adhesion of the carton to the bottom end of the conveying belt.

[0125] As a specific implementation, the rejection mechanism 10 comprises a rejection cylinder positioning plate 102, a rejection cylinder 101, and a push plate 103. The rejection cylinder positioning plate 102 is arranged beside the third single carton conveying mechanism 13. The rejection cylinder 101 is arranged on the rejection cylinder positioning plate 102, and the extension direction of the rejection cylinder 101 is perpendicular to the conveying direction of the third single carton conveying mechanism 13. The push plate 103 is arranged on the piston rod of the rejection cylinder 101. In this embodiment, the rejection mechanism 10 can be controlled to move by a control system. When a defect is detected in the carton, the piston rod of the rejection cylinder 101 is extended to reject the carton from the first conveying system 1.

[0126] In order to facilitate further screening of defective cartons, a recycling conveying mechanism is arranged on the side of the third single carton conveying mechanism 13 opposite the rejection mechanism 10, the recycling conveying mechanism is connected with the roller pressing device, a second rejection mechanism is arranged on the side of the recycling conveying mechanism, and a recycling box is arranged on the side of the recycling conveying mechanism opposite the second rejection mechanism. A shooting system is arranged above the recycling conveying mechanism, the shooting system takes a photo of the carton and compares the photo information with the carton setting photo information in the control system. When it is judged that the carton has a defect, the second rejection mechanism pushes the carton with a defect into the recycling box, and the carton without a defect but with a surface unevenness is conveyed to the position of the roller pressing device, and the roller pressing device is used to flatten the carton again. During the defect detection, manual detection can also be performed.

[0127] As a specific embodiment, the carrying mechanism 7 comprises a carrying mechanism frame 71, a suction cup positioning frame 72, a third cylinder 73, a fourth cylinder 75, a suction cup fixing plate 76 and suction cups 77. The carrying mechanism frame 71 is arranged above the feeding mechanism 5. The suction cup positioning frame 72 is connected to the carrying mechanism frame 71 through a connecting column. The suction cup positioning frame 72 is provided with a rectangular opening 712. The third cylinder 73 is positioned on the suction cup positioning frame 72, and the piston rod end of the third cylinder 73 is connected with a connecting block 74, the top end of the connecting block 74 is connected with a fourth cylinder positioning block 79, and the connecting block 74 is arranged in the rectangular opening 712. Two fourth cylinders 75 are respectively arranged on the left and right sides of the fourth cylinder positioning block 79, and the piston rods of the two fourth cylinders 75 are arranged on the left and right sides of the connecting block 74. The suction cup fixing plate 76 is connected with the piston rods of the fourth cylinders 75. The suction cups 77 are arranged in plurality and are respectively positioned on the bottom end of the suction cup fixing plate 76, and each suction cup 77 is connected with a vacuum pumping system. The bottom wall of the suction cup positioning frame 72 is further provided with a sliding rail 711, and the piston rod of the third cylinder 73 is connected with a sliding block 78, which is slidingly arranged on the sliding rail 711 to slidingly position the piston rod of the third cylinder 73 and enhance the reliability of the device.

[0128] In the embodiment, the operation mode of the carrying mechanism 7 is that the piston rod of the fourth cylinder 75 is elongated to drive the suction cup fixing plate 76 and the suction cups 77 to move downward, the suction cups 77 adsorb a single carton, and then the piston rod of the fourth cylinder 75 is retracted to the original position. After the suction cups 77 adsorb the carton, the piston rod of the third cylinder 73 is elongated to drive the suction cup fixing plate 76, the suction cups 77 and the carton to move horizontally to the rear section, when the movement is completed, the suction cups are broken to release the carton into the carton folding device. Then the piston rod of the third cylinder 73 is retracted to the initial state to perform the adsorption operation of the next carton.

[0129] The structure of the stacking mechanism 2 can be the same as that of the carrying mechanism 7, or a common stacking robot on the market can be used, and the specific structure thereof will not be described here.

[0130] Embodiment 2

[0131] The embodiment discloses a carton feeding method based on the carton feeding system of embodiment 1, and includes the following steps:

[0132] S1. The single carton is carried to the first conveying system 1 by the mechanical hand, and the flatness of the carton 100 is detected by the carton detection mechanism during conveying.

[0133] When the flatness of the carton 100 is detected, the carton 100 is first conveyed by the first single carton conveying mechanism 11, the flatness of the two side parts of the top end surface of the carton is detected by the first distance detector 81 located above the carton, and the flatness of the two side parts of the bottom end surface of the carton is detected by the second distance detector 83 located below the carton. Then the carton is conveyed to the second single carton conveying mechanism 12, the flatness of the middle part of the top end surface of the carton is detected by the third distance detector 91, and the flatness of the middle part of the bottom end surface of the carton is detected by the fourth distance detector 93.

[0134] The first carton detection mechanism 8 and the second carton detection mechanism 9 both transmit the detection information to the control system, the control system compares the detected distance information with the set distance information, and then judges whether the surface of the carton has defects. When the difference between the detected distance information and the set distance information exceeds a certain threshold value, it is judged that the surface of the carton has defects; when the difference between the detected distance information and the set distance information is within the threshold value, it is judged that the surface of the carton has no defects.

[0135] When the carton detection mechanism detects that the carton has defects, the carton detection mechanism feeds back the detection information to the control system, and the control system controls the rejection mechanism 10 to reject the carton with defects out of the first conveying system 1; when the carton detection mechanism does not detect the abnormality of the carton, the carton continues to be conveyed.

[0136] S2. When the carton is conveyed to the intersection position of the first conveying system 1 and the second conveying system 3, the stacking mechanism 2 carries the carton to the second conveying system 3 and stacks the cartons into a carton stack.

[0137] S3. When the carton stacks reach the set height, the second conveying system 3 is operated to convey the carton stacks. In this step, a position sensor 311 is arranged at the set height position of the inner side wall of the frame of the first carton stack conveying mechanism 31 of the second conveying system 3. When the height of the carton reaches the position of the position sensor 311, the position sensor 311 feeds back the height information of the carton to the control system, and the control system controls the operation of the second conveying system 3.

[0138] S4. When the carton stacks are conveyed to the position of the first clamping mechanism 4, the first clamping mechanism 4 clamps the left and right positions of the carton stacks so that the front and back positions of the carton stacks are in the same vertical plane.

[0139] Specifically, when the piston rod of the first cylinder 47 is elongated, the movable plate 45 and the first movable clamping plate 46 can be moved left and right relative to the first fixed clamping plate 44, thereby clamping the carton stacks and positioning the left and right directions of the carton stacks.

[0140] S5. The carton stacks clamped at the left and right positions are conveyed to the feeding mechanism 5, and the feeding mechanism 5 drives the carton stacks to rise.

[0141] S6. The front and back positions of the carton stacks are clamped by the second clamping mechanism 6 so that the left and right positions of the carton stacks are in the same vertical plane.

[0142] Specifically, the piston rods of the two second cylinders 62 are retracted, driving the second movable clamping plate 65 to move to one side of the fixed baffle plate 66, and the second movable clamping plate 65 and the fixed baffle plate 66 cooperate to clamp the front and back directions of the carton stacks.

[0143] S7. The single cartons are carried to the next link by the carrying mechanism 7.

[0144] Obviously, the above embodiments are only examples for clear illustration, and are not limitations to the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, it is not necessary and impossible to exhaust all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A carton feeding system, characterized in that, include: The first conveying system (1) is used to drive the single carton to be conveyed along the first direction; The second conveying system (3) is used to drive the stacked cartons to be conveyed along the second direction. The second conveying system (3) is perpendicular to or on the same line as the first conveying system (1). The palletizing mechanism (2) is located between the first conveying system (1) and the second conveying system (3) and is used to palletize single cartons on the first conveying system (1) to the second conveying system (3). A carton inspection mechanism is installed on the first conveying system (1) and is used to inspect the flatness of a single carton; The rejection mechanism (10) is set on the first conveying system (1) and located at the rear end of the carton inspection mechanism, and is used to reject single cartons with quality defects; The first clamping mechanism (4) is set on the second conveying system (3) and is used to clamp the left and right positions of the carton stack so that the front and back positions of the carton stack are in the same vertical plane. The feeding mechanism (5) is located at the end of the conveying system (3) and can drive the carton stack to move up and down. It has a first position and a second position. When the feeding mechanism (5) is in the first position, it is connected to the second conveying system (3) and receives the carton stack transmitted by the second conveying system (3). When the feeding mechanism (5) is in the second position, it can lift the carton stack. The second clamping mechanism (6) is provided on the feeding mechanism (5). The second clamping mechanism (6) is used to clamp the front and rear positions of the carton stack when the feeding mechanism (5) is in the second position, so that the left and right positions of the carton stack are in the same vertical plane. The conveying mechanism (7) is located above the feeding mechanism (5). The conveying mechanism (7) is used to convey individual cartons to the next stage after the second clamping mechanism (6) clamps the carton stack. The feeding mechanism (5) includes: The frame of the feeding mechanism (51); The lifting mechanism (52) is located at the bottom of the inside of the loading mechanism frame (51); the lifting mechanism (52) includes a lifting cylinder (522) and a lifting plate (521), the lifting cylinder (522) is vertically arranged, and the piston rod end of the lifting cylinder (522) is connected to the lifting plate (521); The two side walls of the feeding mechanism frame (51) are also provided with a carton support structure (53). The carton support structure (53) includes a deflector plate (531) and a fixing block (532). The feeding mechanism frame (51) has a through hole. The fixing block (532) is fixed to the side wall of the feeding mechanism frame (51). One end of the deflector plate (531) is movably disposed on the fixing block (532). The other end of the deflector plate (531) passes through the through hole and extends into the inside of the feeding mechanism frame (51). During the process of the feeding mechanism (5) driving the carton stack to rise, the actuating plate (531) is squeezed by the carton stack so that the actuating plate (531) rotates upward and is located in the through hole; When the feeding mechanism (5) moves the carton stack above the actuating plate (531), the actuating plate (531) extends out of the through hole and rotates to a horizontal state under the action of gravity to support the bottom of the carton stack.

2. The carton feeding system according to claim 1, characterized in that, The first clamping mechanism (4) includes: The first clamping mechanism frame (41) is located above the outer periphery of the second conveying system (3); The first fixed clamping structure includes a fixed post (42), a fixed plate (43), and a first fixed clamping plate (44); the fixed post (42) is arranged on the frame (41) of the first clamping mechanism in the left-right direction, the fixed plate (43) is fixedly arranged on the fixed post (42), and the first fixed clamping plate (44) is fixedly arranged on the fixed plate (43) and extends downward; The first movable clamping structure moves in a direction perpendicular to the conveying direction of the second conveying system (3). The first movable clamping structure moves relative to the first fixed clamping structure to clamp the left and right positions of the carton stack.

3. A carton feeding system according to claim 2, characterized in that, The first movable clamping structure includes: The first cylinder (47) has its fixed end set on the fixed plate (43) and is arranged in the left and right directions. The movable plate (45) is connected to the piston rod end of the first cylinder (47), and the movable plate (45) moves through the fixed column (42) and can move left and right along the fixed column (42); At least one first movable clamping plate (46) is fixedly mounted on the movable plate (45) and extends downward.

4. A carton feeding system according to claim 1, characterized in that, The second clamping mechanism (6) includes: A fixed baffle (66) is installed behind the frame (51) of the feeding mechanism; A pair of second cylinder positioning plates (61) are respectively arranged to extend forward along the frame (51) of the feeding mechanism; A pair of second cylinders (62) are respectively positioned on the second cylinder positioning plate (61), and the piston rod end of each second cylinder (62) is connected to a connecting plate (63); A pair of second movable clamps (65) are respectively connected and positioned on the connecting plate (63) by connecting rods (64). The second movable clamps (65) cooperate with the fixed baffle (66) to achieve clamping and sorting of the carton stack.

5. A carton feeding system according to claim 1, characterized in that, The first conveying system (1) includes a first single carton conveying mechanism (11), a second single carton conveying mechanism (12), a third single carton conveying mechanism (13), and a fourth single carton conveying mechanism (14) arranged sequentially along the conveying direction. The first single carton conveying mechanism (11) and the second single carton conveying mechanism (12) are both conveyor belt conveying mechanisms. The conveyor belt of the first single carton conveying mechanism (11) is located in the middle and the width of the conveyor belt of the first single carton conveying mechanism (11) is smaller than the width of the carton. The conveyor belt of the second single carton conveying mechanism (12) is provided in two sections and is located on the left and right sides respectively, and there is a gap between the two sections of the conveyor belt of the second single carton conveying mechanism (12). The carton inspection mechanism includes a first carton inspection mechanism (8) and a second carton inspection mechanism (9); The first carton inspection mechanism (8) includes a first distance detector positioning frame (82) and two rows of first distance detector groups. The two rows of first distance detector groups are respectively arranged on the left and right sides of the conveyor belt of the first single carton conveying mechanism (11). The first distance detector group includes a first distance detector (81) arranged at the bottom of the first distance detector positioning frame (82) and a second distance detector (83) arranged directly below the first distance detector positioning frame (82). The first distance detector (81) is used to detect the flatness of the top surface of the carton, and the second distance detector (83) is used to detect the flatness of the bottom surface of the carton. The second carton inspection mechanism (9) includes a second distance detector positioning frame (92) and two rows of second distance detector groups. The two rows of second distance detector groups are respectively arranged between the conveyor belts of the two sections of the second single carton conveying mechanism (12). The second distance detector group includes a third distance detector (91) arranged at the bottom of the second distance detector positioning frame (92) and a fourth distance detector (93) arranged directly below the second distance detector positioning frame (92). The third distance detector (91) is used to detect the flatness of the top surface of the carton, and the fourth distance detector (93) is used to detect the flatness of the bottom surface of the carton.

6. A carton feeding system according to claim 5, characterized in that, The rejection mechanism (10) includes: Remove the cylinder positioning plate (102) and set it next to the third single carton conveying mechanism (13); A rejection cylinder (101) is mounted on a rejection cylinder positioning plate (102), and the extension and retraction direction of the rejection cylinder (101) is perpendicular to the conveying direction of the third single carton conveying mechanism (13). A push plate (103) is mounted on the piston rod of the rejection cylinder (101).

7. A carton feeding system according to claim 1, characterized in that, The conveying mechanism (7) includes: The handling mechanism frame (71) is mounted above the loading mechanism (5); The suction cup positioning frame (72) is connected to the conveying mechanism frame (71) via a connecting column; The third cylinder (73) is positioned on the suction cup positioning frame (72). The piston rod end of the third cylinder (73) is connected to a connecting block (74), and the top end of the connecting block (74) is connected to a fourth cylinder positioning block (79). Two fourth cylinders (75) are located on the left and right sides of the fourth cylinder positioning block (79), and the piston rods of the two fourth cylinders (75) are located on the left and right sides of the connecting block (74). The suction cup fixing plate (76) is connected to the piston rod of the fourth cylinder (75); Several suction cups (77) are respectively positioned at the bottom end of the suction cup fixing plate (76), and each suction cup (77) is connected to the vacuum system.

8. A method for feeding cardboard boxes, characterized in that, The method is based on the carton feeding system according to any one of claims 1-7, and includes the following steps: S1. A single cardboard box is transported to the first conveying system (1) by a robotic arm. During the conveying process, the flatness of the cardboard box is detected by a cardboard box detection mechanism. When the cardboard box detection mechanism detects a defect in the cardboard box, it feeds the detection information back to the control system. The control system controls the rejection mechanism (10) to reject the defective cardboard box from the first conveying system (1). When the cardboard box detection mechanism does not detect any abnormality in the cardboard box, the cardboard box continues to be conveyed. S2. When the carton is conveyed to the junction of the first conveying system (1) and the second conveying system (3), the stacking mechanism (2) moves the carton to the second conveying system (3) and stacks each carton into a carton stack; S3. When the cartons are stacked to the set height, the second conveying system (3) is activated to convey the carton stack. S4. When the stack of cartons is conveyed to the position of the first clamping mechanism (4), the first clamping mechanism (4) clamps the left and right positions of the stack of cartons so that the front and back positions of the stack of cartons are in the same vertical plane. S5. The stack of cartons clamped in the left and right positions is conveyed to the feeding mechanism (5), and the feeding mechanism (5) drives the stack of cartons to rise. S6. The front and rear positions of the cardboard box stack are clamped by the second clamping mechanism (6) so that the left and right positions of the cardboard box stack are in the same vertical plane. S7. The individual cartons are moved one by one to the next stage by the handling mechanism (7).

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