Packaging box conveying anti-falling device

Abstract

A packaging box conveying anti-falling device comprises a first conveying line, a second conveying line and a buffering device. The output end of the second conveying line is located above the input end of the first conveying line, and baffles are fixedly arranged on the two sides of the input end of the first conveying line. A first guide hole and a second guide hole which correspond to each other are respectively formed in the two baffles; the second guide hole is located in the front end of the first guide hole in the transmission direction of the first conveying line. Sleeves are respectively arranged in the first guide hole and the second guide hole, and the sleeves can slide along the first guide hole and / or the second guide hole; the buffer device is arranged between the two baffles through the sleeve; the end, facing the transmission direction of the first conveying line, of the buffering device is lower than the other end of the buffering device. And the falling distance of the packaging box is reduced, so that the impact force generated when the packaging box falls is reduced, the packaging box falls onto a conveying line below without damage, and the cost is further reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to packing conveying technical field, in particular to a packing box conveying anti -falling device. BACKGROUND

[0002] The packing box is the outer package for protecting the quantity and quality of goods and facilitating transportation and storage; the main role of the outer package is to protect goods, prevent goods from being damaged and contaminated during storage and transportation; in addition, the outer package can also attract consumers through its design and material and improve the market appeal of products.

[0003] In the production and conveying process, due to the limited space, two layers of conveying lines are often used, and in the prior art, the positions of the upper conveying line and the lower conveying line are set to convey the package from the upper conveying line to the lower conveying line, and the package needs to fall to the lower conveying line, which causes the package to be damaged and increases the production cost.

[0004] Therefore, the technical personnel in the prior art need to provide a packing box conveying anti-falling device which can effectively reduce the damage of the package. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a packing box conveying anti-falling device to solve the above-mentioned problems in the prior art.

[0006] A packing box conveying anti-falling device, comprising a first conveying line, a second conveying line and a buffer device;

[0007] The output end of the second conveying line is located above the input end of the first conveying line, and the input end of the first conveying line is fixedly provided with baffles on both sides; two baffles are respectively provided with corresponding first guide holes and second guide holes; and the second guide hole is located at the front end of the first guide hole along the transmission direction of the first conveying line; sleeves are respectively arranged in the first guide hole and the second guide hole, and the sleeves can slide along the first guide hole and / or the second guide hole; the buffer device is arranged between the two baffles through the sleeves; one end of the buffer device towards the transmission direction of the first conveying line is lower than the other end of the buffer device.

[0008] Preferably, the buffer device comprises a housing, a main movable rod, a slave movable rod and a conveying device; the housing comprises side plates and a top plate; the top plate is fixed with the side plates at both sides of the lower end of the top plate, and the side plates are perpendicular to the top plate; the side plates are provided with corresponding first and second through holes; the main movable rod penetrates the first through hole and the sleeve in the first guide hole in sequence at both ends, and rotates in the sleeve in the first guide hole; the slave movable rod penetrates the second through hole and the sleeve in the second guide hole in sequence at both ends, and rotates in the sleeve in the second guide hole; the main movable rod is drivingly connected with a first transmission device at either end; the main movable rod and the slave movable rod are provided with the conveying device, and the main movable rod drives the slave movable rod to rotate through the conveying device.

[0009] Preferably, the conveying device comprises rollers and a conveyor belt; a plurality of rollers are fixedly sleeved on the main movable rod and the slave movable rod, and the conveyor belt is sleeved on the rollers of the main movable rod and the slave movable rod.

[0010] Preferably, the first transmission device comprises a driving wheel, a driven wheel, an adjusting device and a first transmission chain; one side of the first conveying line is further provided with a groove; the adjusting plate of the adjusting device is arranged in the groove; the driving wheel is drivingly connected to the transmission roller of the first conveying line; one end of the main movable rod is connected to the driven wheel; the first transmission chain is sleeved on the driving wheel, the driven wheel and the adjusting wheel of the adjusting device, and the driving wheel drives the driven wheel and the adjusting wheel to rotate.

[0011] Preferably, the adjusting device further comprises an adjusting rod, a bearing and a fastening nut; the adjusting plate is fixedly connected to one end of the adjusting rod, the fastening nut is sleeved on the adjusting rod; the other end of the adjusting rod is fixedly connected to the inner ring of the bearing, and the adjusting wheel is fixedly connected to the outer ring of the bearing.

[0012] Preferably, the end of the side plate is further detachably connected with a transition piece; the transition piece comprises a transition plate and a triangular plate; the two sides of the transition plate are fixedly connected to the long straight angle sides of the triangular plate; the triangular plate is located below the transition plate; the short straight angle side of the triangular plate faces the front end of the side plate, and the triangular plate is arranged inside the side plate; the length of the short straight angle side of the triangular plate is shorter than the width of the side plate; the third through holes are respectively formed at the ends of the two side plates; the fourth through holes are respectively formed in the two triangular plates; threads are arranged in the third through holes and the fourth through holes; and the triangular plate and the side plate are fastened by screws penetrating the fourth through holes and the third through holes.

[0013] Preferably, the conveying device comprises rollers and a second transmission device; a plurality of rotating rods are arranged between the main movable rod and the slave movable rod; the rotating rods are rotatably arranged between the two side plates; a plurality of the rollers are fixedly arranged on the main movable rod, the slave movable rod and the rotating rods; and the main movable rod drives the slave movable rod and the rotating rods to rotate through the second transmission device.

[0014] Preferably, the second transmission device comprises a chain wheel and a second transmission chain; the chain wheel is fixedly arranged on the main movable rod, the slave movable rod and the plurality of rotating rods, and the chain wheel is sleeved with the second transmission chain.

[0015] Preferably, a protection plate is arranged above the second transmission device; the upper end of the protection plate is fixedly connected to the top plate; one side of the protection plate is fixedly connected to the upper end of the side plate, and the protection plate is perpendicular to the side plate.

[0016] Compared with the prior art, the packaging box conveying anti-falling device has the following beneficial effects:

[0017] The output end of the second conveying line is located above the input end of the first conveying line, and baffles are fixedly arranged on the two sides of the input end of the first conveying line; the packaging boxes are prevented from falling to the two sides of the first conveying line; the two baffles are respectively provided with corresponding first guide holes and second guide holes; the second guide hole is located at the front end of the first guide hole along the transmission direction of the first conveying line; sleeves are respectively arranged in the first guide hole and the second guide hole, and the sleeves are detachably connected to the baffles; the sleeves are arranged to allow the sleeves to be detachably moved and fixed in position along the first guide hole and the second guide hole, thereby adjusting the height of the buffer device; the buffer device is arranged between the two baffles through the sleeves; one end of the buffer device in the transmission direction of the first conveying line is lower than the other end of the buffer device; the buffer device forms a slope with the left end being higher than the right end, thereby adjusting the appropriate height space of the packaging boxes, reducing the falling distance of the packaging boxes, and thereby reducing the impact force when the packaging boxes fall, allowing the packaging boxes to fall onto the first conveying line without damage and reducing the cost. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings described in the following only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0019] Figure 1It is the whole structure schematic view of the utility model;

[0020] Figure 2 It is the sleeve structure schematic view of the utility model;

[0021] Figure 3 It is the buffer device movement schematic view of the utility model;

[0022] Figure 4 It is the shell structure schematic view of the utility model;

[0023] Figure 5 It is the buffer device overhead structure schematic view of the utility model;

[0024] Figure 6 It is the buffer device overhead structure schematic view of another utility model;

[0025] Figure 7 It is the second transmission device structure schematic view of the utility model;

[0026] Figure 8 It is the adjusting device structure schematic view of the utility model;

[0027] Figure 9 It is the transition piece structure schematic view of the utility model.

[0028] 1 is the first conveying line, 2 is the second conveying line, 3 is the buffer device, 4 is the baffle, 5 is the first guide hole, 6 is the second guide hole, 7 is the sleeve, 8 is the first transmission device, 9 is the recess, 10 is the protection plate, 11 is the transition piece, 31 is the shell, 32 is the main movable rod, 33 is the movable rod, 34 is the conveying device, 35 is the rotating rod, 36 is the side plate, 37 is the top plate, 38 is the first through hole, 39 is the second through hole, 40 is the roller, 41 is the conveying belt, 42 is the roller, 43 is the second transmission device, 44 is the sprocket, 45 is the second transmission chain, 46 is the third through hole, 81 is the driving wheel, 82 is the driven wheel, 83 is the adjusting device, 84 is the first transmission chain, 85 is the adjusting plate, 86 is the adjusting wheel, 87 is the adjusting rod, 88 is the bearing, 89 is the fastening nut, 111 is the transition plate, 112 is the triangular plate, 113 is the fourth through hole. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] like Figures 1-3 As shown, a packaging box conveying anti-fall device includes: a first conveyor line 1, a second conveyor line 2, and a buffer device 3; the output end of the second conveyor line 2 is located above the input end of the first conveyor line 1, and baffles 4 are fixedly provided on both sides of the input end of the first conveyor line 1; the two baffles 4 are respectively provided with corresponding first guide holes 5 and second guide holes 6; and the second guide hole 6 is located at the front end of the first guide hole 5 along the transmission direction of the first conveyor line 1; sleeves 7 are respectively provided in the first guide hole 5 and the second guide hole 6, and the sleeves 7 can slide along the first guide hole 5 and / or the second guide hole 6; the buffer device 3 is disposed between the two baffles 4 through the sleeves 7; one end of the buffer device 3 facing the transmission direction of the first conveyor line 1 is lower than the other end of the buffer device 3. Specifically, sleeve 7 is a hollow sleeve with threads on the outside; sleeve 7 passes through the first guide hole 5 and the second guide hole 6 respectively, and after the sleeve 7 is adjusted to a suitable position along the first guide hole 5 and the second guide hole 6, nuts that match the sleeve threads and are larger than the width of the first guide hole 5 and the second guide hole 6 are used to fasten it on both sides; in use, the height of the sleeve 7 fastened on the two first guide holes 5 is higher than the height of the sleeve 7 fastened on the two second guide holes 6, and the sleeve positions in the two first guide holes 5 and the sleeve positions in the two second guide holes 6 are one-to-one. Then, nuts are used to fix it on the baffle 4, and the buffer device 3 is set on the sleeve 7 to form a slope that is higher on the left and lower on the right, so that the packaging box falls onto the buffer device 3, reducing the impact force of the packaging box falling, and smoothly moving along the slope to the first conveyor line 1.

[0032] In one exemplary embodiment, such as Figures 4-6As shown, the buffer device 3 comprises a housing 31, a main movable rod 32, a slave movable rod 33 and a conveying device 34; the housing 31 comprises side plates 36 and a top plate 37; the side plates 36 are fixedly arranged at both sides of the lower end of the top plate 37, and the side plates 36 are perpendicular to the top plate 37; the side plates 36 are provided with corresponding first through holes 38 and second through holes 39; the main movable rod 32 penetrates the first through holes 38 and the sleeves 7 in the first guide holes 5 in sequence at both ends, and the main movable rod 32 rotates in the sleeves 7 in the first guide holes 5; the slave movable rod 33 penetrates the second through holes 39 and the sleeves 7 in the second guide holes 6 in sequence at both ends, and the slave movable rod 33 rotates in the sleeves 7 in the second guide holes 6; a first transmission device 8 is transmissionally connected to either end of the main movable rod 32; the main movable rod 32 and the slave movable rod 33 are provided with the conveying device 34, and the main movable rod 32 drives the slave movable rod 33 to rotate through the conveying device 34. Specifically, the conveying device mainly conveys the fallen packaging boxes to the first conveying line more quickly; the top plate 37 of the housing 31 prevents the falling objects from falling out of the input end of the first conveying line 1; in use, the first transmission device 8 drives the main movable rod 32 to rotate, and the slave movable rod 33 is driven to rotate through the conveying device 34.

[0033] In one exemplary embodiment, as shown in Figure 5 As shown, the conveying device 34 comprises rollers 40 and a conveyor belt 41; a plurality of rollers 40 are fixedly sleeved on the main movable rod 32 and the slave movable rod 33, and the conveyor belt 41 is sleeved on the rollers 40 of the main movable rod 32 and the slave movable rod 33. Specifically, a small conveying line is formed, which can improve the efficiency of conveying the packaging boxes; and the lower part of the conveyor belt is empty, which can further reduce the impact force of the falling packaging boxes; in this embodiment, the conveying device 34 is two sets, and the two conveyor belts are sleeved on the corresponding rollers 40 of the main movable rod 32 and the slave movable rod 33; in use, the main movable rod 32 rotates to drive the rollers 40, the rollers 40 drive the conveyor belt 41 to rotate, the conveyor belt 41 drives the rollers 40 on the slave movable rod 33 to rotate, and then drives the slave movable rod 33 to rotate, thereby conveying the packaging boxes on the conveyor belt 41 to the first conveying line 1.

[0034] In one exemplary embodiment, as shown in Figure 1 and Figure 8As shown, the first transmission device 8 comprises a driving wheel 81, a driven wheel 82, an adjusting device 83 and a first transmission chain 84; one side of the first conveying line 1 is further provided with a groove 9; an adjusting plate 85 of the adjusting device 83 is arranged in the groove 9; the driving wheel 81 is drivingly connected to a transmission roller of the first conveying line 1; one end of the main movable rod 32 is connected to the driven wheel 82; the transmission chain 84 is sleeved on the driving wheel 81, the driven wheel 82 and an adjusting wheel 86 of the adjusting device 83, and the driving wheel 81 drives the driven wheel 82 and the adjusting wheel 86 to rotate. Specifically, the driving wheel 81, the driven wheel 82 and the adjusting wheel 86 are gears, and the first transmission chain 84 is a chain matched with the gears; the transmission roller connected to the first conveying line 1 is to share transmission power with the first conveying line 1 without additionally arranging a motor; in the application, the adjusting wheel 86 is arranged to slide in the groove, when the adjusting wheel 86 slides to the left, the chain is loosened, the nuts of the four sleeves 7 in the first guide hole 5 and the second guide hole 6 are loosened, and the height of the buffer device 3 is adjusted upward along the first guide hole 5 and the second guide hole 6, and vice versa; in use, the transmission roller of the first conveying line 1 drives the driving wheel 81 to rotate, the driving wheel 81 drives the first transmission chain 84 to rotate, and then drives the driven wheel 82 and the adjusting wheel 86 to rotate.

[0035] In one example embodiment, as Figure 8 As shown, the adjusting device 83 further comprises an adjusting rod 87, a bearing 88 and a fastening nut 89; the adjusting plate 85 is fixedly connected to one end of the adjusting rod 87, the fastening nut 89 is sleeved on the adjusting rod 87, the other end of the adjusting rod 87 is fixedly connected to an inner ring of the bearing 88, and the adjusting wheel 86 is fixedly connected to an outer ring of the bearing 88. In use, the diameter of the adjusting plate 85 is smaller than the right circular hole of the groove 9 and larger than the width of the left side of the groove 9, the adjusting plate 85 enters into the groove 9 from the right circular hole of the groove 9, moves in the groove, is arranged in position, and is fixed on the first conveying line 1 by the fastening nut 89.

[0036] In one example embodiment, as Figure 4 and Figure 9As shown, the end of the side plate 36 is detachably connected with a transition piece 11; the transition piece 11 comprises a transition plate 111 and a triangular plate 112; the two sides of the transition plate 111 are fixedly connected on the long straight angle side of the triangular plate 112; and the triangular plate 112 is located below the transition plate 111; the short straight angle side of the triangular plate 112 faces the front end of the side plate 36, and the triangular plate 112 is arranged inside the side plate 36; the length of the short straight angle side of the triangular plate 112 is shorter than the width of the side plate 36; the end of each of the two side plates 36 is provided with a third through hole 46; the end of each of the two triangular plates 112 is provided with a fourth through hole 113; the third through hole 46 and the fourth through hole 113 are provided with threads; and the triangular plate 112 and the side plate 36 are fastened by a screw penetrating through the fourth through hole 113 and the third through hole 46. Specifically, when the packaging box on the buffer device 3 moves to the end of the buffer device, it has a certain height at the joint with the first conveying line 1. The transition piece 11 is arranged to make the packaging box move more stably onto the first conveying line 1. Figure 4 As shown in the right dashed part of FIG. 9, it is indicated that the transition piece 11 can change the inclination angle of the transition plate 111; the height of the adjusted transition plate 111 is always lower than the conveying device 34; and the adjusted transition plate 111 leaves a certain gap with the first conveying line 1. When the slope of the transition plate 111 needs to be adjusted, the screw is loosened, and after adjustment, it is fastened. If it is not firm during use, a matched nut can be used to fasten it again on the other side of the penetrating screw.

[0037] In another exemplary embodiment, as shown in FIG. 10, Figure 6 the conveying device 34 comprises rollers 42 and a second transmission device 43; a plurality of rotating rods 35 are arranged between the main movable rod 32 and the slave movable rod 33; the rotating rod 35 is rotatably arranged between the two side plates 4; a plurality of rollers 42 are fixedly arranged on the main movable rod 32, the slave movable rod 33 and the rotating rod 35; and the main movable rod 32 drives the slave movable rod 33 and the rotating rod 35 to rotate through the second transmission device 43. Specifically, the roller 42 is preferably a sponge roller, which can further reduce the impact force when the packaging box falls; the distance between the rollers 42 and the number of the rollers 42 are arranged according to the size of the packaging box, as long as the packaging box can not be stuck in the gap when it falls; during use, the main movable rod 32 drives the second transmission device 43 to rotate, thereby driving the slave movable rod 33 and the rotating rod 35 to rotate; and the rollers 42 on the main movable rod 32, the slave movable rod 33 and the rotating rod 35 drive the packaging box to be conveyed onto the first conveying line 1.

[0038] In another exemplary embodiment, as shown in FIG. 11, Figures 6-7As shown, the second transmission device 43 comprises a chain wheel 44 and a second transmission chain 45; the main movable rod 32, the slave movable rod 33 and the plurality of rotating rods 35 are all fixedly provided with the chain wheel 44, and the chain wheel 44 is sleeved with the second transmission chain 45. Specifically, the chain wheel 44 is a gear, and the second transmission chain 45 is a chain matched with the gear; the height of the second transmission chain 45 is lower than the height of the roller 42.

[0039] In another exemplary embodiment, as Figure 6 As shown, the second transmission device 43 is provided with a protection plate 10; the upper end of the protection plate 10 is fixedly connected to the top plate 37; one side of the protection plate 10 is fixedly connected to the upper end of the side plate 36, and the protection plate 10 is perpendicular to the side plate 36. In use, the protection plate 10 is lower than the height of the roller 42, so that the packaging box can be smoothly conveyed onto the first conveying line 1 when falling, and the main purpose of the protection plate is to protect the chain, so that the chain cannot be touched when the article falls.

[0040] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0041] The above-described embodiments are only preferred modes of the present application, and do not limit the scope of the present application, and various modifications and improvements to the technical solutions of the present application made by those skilled in the art without departing from the design spirit of the present application should all fall within the protection scope determined by the claims of the present application.

Claims

1. A packaging box conveying anti-fall device, characterized in that, Include: First conveying line (1), second conveying line (2) and buffer device (3); The output end of the second conveying line (2) is located above the input end of the first conveying line (1), and the input end of the first conveying line (1) is fixedly provided with a baffle (4) on both sides; Two baffle (4) respectively open corresponding first guide hole (5) and second guide hole (6);And the second guide hole (6) is located at the front end of the first guide hole (5) along the transmission direction of the first conveying line (1); The first guide hole (5) and the second guide hole (6) are respectively provided with a sleeve (7), and the sleeve (7) can slide along the first guide hole (5) and / or the second guide hole (6); The buffer device (3) is arranged between the two baffles (4) through the sleeve (7);The one end of the buffer device (3) towards the transmission direction of the first conveying line (1) is lower than the other end of the buffer device (3).

2. The packaging box conveying anti-falling device according to claim 1, characterized in that: The buffer device (3) includes a shell (31), a main movable rod (32), a slave movable rod (33) and a conveying device (34); The shell (31) includes a side plate (36) and a top plate (37);The top plate (37) is fixedly provided with the side plate (36) on both sides of the lower end, and the side plate (36) is perpendicular to the top plate (37);The side plate (36) is provided with corresponding first through hole (38) and second through hole (39); The both ends of the main movable rod (32) pass through the first through hole (38) and the sleeve (7) in the first guide hole (5) in turn, and the main movable rod (32) rotates in the sleeve (7) in the first guide hole (5); The both ends of the slave movable rod (33) pass through the second through hole (39) and the sleeve (7) in the second guide hole (6) in turn, and the slave movable rod (33) rotates in the sleeve (7) in the second guide hole (6); Any end of the main movable rod (32) is drivingly connected with a first transmission device (8); The main movable rod (32) and the slave movable rod (33) are provided with the conveying device (34), and the main movable rod (32) drives the slave movable rod (33) to rotate through the conveying device (34).

3. The packaging box conveying anti-falling device according to claim 2, characterized in that: The conveying device (34) includes a roller (40) and a conveyor belt (41); A plurality of rollers (40) are fixedly sleeved on the main movable rod (32) and the slave movable rod (33), and the conveyor belt (41) is sleeved on the rollers (40) of the main movable rod (32) and the slave movable rod (33).

4. The packaging box conveying anti-falling device according to claim 2, characterized in that: The first transmission device (8) includes a driving wheel (81), a driven wheel (82), an adjusting device (83) and a first transmission chain (84); One side of the first conveying line (1) is also provided with a groove (9); The adjusting plate (85) of the adjusting device (83) is arranged in the groove (9); The driving roller of the first conveying line (1) is drivingly connected with the driving wheel (81);One end of the main movable rod (32) is connected with the driven wheel (82). The first transmission chain (84) is sleeved on the driving wheel (81), the driven wheel (82) and the adjusting wheel (86) of the adjusting device (83), and the driving wheel (81) drives the driven wheel (82) and the adjusting wheel (86) to rotate.

5. The packaging box conveying anti-falling device according to claim 4, characterized in that: The adjusting device (83) further comprises an adjusting rod (87), a bearing (88) and a fastening nut (89); The adjusting plate (85) is fixedly connected to one end of the adjusting rod (87), and the fastening nut (89) is sleeved on the adjusting rod (87); The other end of the adjusting rod (87) is fixedly connected to the inner ring of the bearing (88), and the adjusting wheel (86) is fixedly connected to the outer ring of the bearing (88).

6. The packaging box conveying anti-falling device according to claim 2, characterized in that: The end of the side plate (36) is further detachably connected with a transition piece (11); The transition piece (11) comprises a transition plate (111) and a triangular plate (112); The two sides of the transition plate (111) are fixedly connected to the long straight angle sides of the triangular plate (112), and the triangular plate (112) is located below the transition plate (111); The short straight angle side of the triangular plate (112) faces the front end of the side plate (36), and the triangular plate (112) is connected to the inner side of the side plate (36); The length of the short straight angle side of the triangular plate (112) is shorter than the width of the side plate (36); The end of each of the two side plates (36) is provided with a third through hole (46), and the two triangular plates (112) are respectively provided with fourth through holes (113); The third through hole (46) and the fourth through hole (113) are provided with threads, and the triangular plate (112) and the side plate (36) are fastened by a screw penetrating through the fourth through hole (113) and the third through hole (46).

7. The packaging box conveying anti-falling device according to claim 2, characterized in that: The conveying device (34) comprises rollers (42) and a second transmission device (43); A plurality of rotating rods (35) are arranged between the main movable rod (32) and the slave movable rod (33), and the rotating rods (35) are rotatably arranged between the two side plates (36); A plurality of rollers (42) are fixedly sleeved on the main movable rod (32), the slave movable rod (33) and the rotating rods (35), and the main movable rod (32) drives the slave movable rod (33) and the rotating rods (35) to rotate through the second transmission device (43).

8. The packaging box conveying anti-falling device according to claim 7, characterized in that: The second transmission device (43) comprises a sprocket (44) and a second transmission chain (45); The sprocket (44) is fixedly arranged on the main movable rod (32), the slave movable rod (33) and the rotating rods (35), and the sprocket (44) is sleeved with the second transmission chain (45).

9. The packaging box conveying anti-falling device according to claim 7, characterized in that: A protection plate (10) is arranged above the second transmission device (43); The upper end of the protection plate (10) is fixedly connected to the top plate (37), one side of the protection plate (10) is fixedly connected to the upper end of the side plate (36), and the protection plate (10) is perpendicular to the side plate (36).

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