A turning device for carton conveying

Abstract

The present invention discloses a flipping device for carton conveying, which relates to the field of box material conveying, comprising: a conveyor line frame body and a plurality of first conveying rollers rotatably assembled inside the conveyor line frame body and distributed in a straight line and at equal intervals, wherein the plurality of first conveying rollers are assembled for transmission via a transmission sprocket and a transmission wheel, a partition space is provided between the plurality of first conveying rollers, and a flipping unit is installed inside the partition space. The present invention can flip and overturn the box being conveyed through the flipping unit on the conveyor line frame body, thereby facilitating the staff to perform all-round appearance inspection and processing on the outer surface of the box, which can effectively avoid the existence of inspection blind spots on the outer surface of the box, and ensure the comprehensiveness of the box inspection. During the operation of the flipping unit, the buffer unit can also be started through the trigger unit, and the buffer unit can limit the position of other boxes, thereby avoiding the accumulation of multiple boxes and reducing the workload of the flipping unit.

Description

Technical Field

[0001] The invention relates to the field of box material transportation, and in particular to a turning device for carton transportation. Background Art

[0002] On automated conveyor lines, cartons are often used to load and package materials. After packaging, the cartons are transported to a designated location through the conveyor line, awaiting subsequent unified transfer processing.

[0003] During the transportation of the box on the conveyor line, the appearance of the box needs to be inspected to avoid damage, dents, etc. on the outer surface of the box. After the appearance inspection of the box is completed, the inspection label is affixed to the outer surface of the qualified box.

[0004] During the appearance inspection of the box on the conveyor line, usually only the sides and top of the box can be inspected. Because the bottom of the box is always in contact with the drive rollers of the conveyor line, the bottom appearance of the box cannot be inspected. If the bottom of the box is damaged, it is easy to break due to bumps during the subsequent transportation process, which will eventually cause the products inside the box to fall and damage the products. Summary of the invention

[0005] The object of the present invention is to provide a turning device for carton conveying to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a flipping device for carton conveying, comprising: a conveyor frame body and a plurality of first conveyor rollers rotatably assembled inside the conveyor frame body and distributed in a straight line and at equal intervals, wherein the plurality of first conveyor rollers are assembled for transmission via a transmission sprocket and a transmission wheel, wherein the plurality of first conveyor rollers play a role in carrying and transporting the box body, wherein at least one partition space is provided between the plurality of first conveyor rollers, wherein a flipping unit is installed inside the partition space, wherein the flipping unit is used to drive the box body to perform a flipping action, and wherein the flipping unit can drive the box body to flip ninety degrees;

[0007] It also includes: a buffer unit, which prevents multiple boxes on the conveyor frame from simultaneously abutting against the flip unit, and is used to reduce the load of the flip unit, and the buffer unit is arranged on the side of the flip unit;

[0008] The trigger unit is used to be connected between the flip unit and the buffer unit, and when the flip unit is running, the buffer unit is driven to run through the trigger unit.

[0009] Preferably, the flip unit includes two symmetrically distributed flip frames located inside the partition space, the flip frames are V-shaped, and the angle of the flip frames is ninety degrees. Two groups of second conveying rollers are rotatably installed between the two flip frames, and the two groups of second conveying rollers are also V-shaped. The number of second conveying rollers in each group is several. Both ends of one of the second conveying rollers located at the top of the flip frame are also rotatably installed inside the conveyor frame, and a transmission assembly is provided between the second conveying roller located at one end of the flip frame and the closest first conveying roller, and a transmission assembly is also provided between a group of second conveying rollers located on the right side through a transmission sprocket and a transmission chain. A horizontally placed cross seat plate is hingedly installed at the angle of the flip frame, a straight groove is provided in the center of the cross seat plate, and the straight groove is distributed parallel to the conveyor frame, a sliding block is slidably installed inside the straight groove, a lifting cylinder is provided below the conveyor frame, and the position of the lifting cylinder and the conveyor frame is relatively fixed, and the output end of the lifting cylinder and the sliding block are fixedly assembled.

[0010] Preferably, the axis of the second conveying roller rotatably assembled with the conveying line frame is on the same horizontal plane as the axis of the first conveying roller.

[0011] Preferably, a blocking component is further provided between the cross seat plate and the conveyor line frame body, the blocking component includes a blocking plate vertically slidably assembled inside the conveyor line frame body, and the blocking plate is located between the movable end of the flip frame body and the first conveying roller, the bottom of the blocking plate is also slidably sleeved on the outside of the cross seat plate, and the top of the blocking plate is also provided with a curved portion, and the curved portion is bent toward one side of the flip frame body.

[0012] Preferably, the buffer unit is located on the side of the blocking plate away from the flip frame, and two symmetrically distributed long plates are placed on the upper end surface of the conveyor frame, and at least two sliding rods are fixedly provided on the end surfaces of the two long plates away from each other, and the outer surface of each sliding rod is also slidably sleeved with a positioning frame fixed to the conveyor frame, the long plates and the conveyor frame are distributed in parallel, and two symmetrically distributed curved rods are also provided on the outside of the conveyor frame, and the curved rods are in the shape of a C-shaped frame, a spring is fixedly provided between one end of the curved rod and the long plate, and the other end of the curved rod extends to the bottom of the conveyor frame, and a plurality of rubber pads distributed in a straight line and equidistantly are fixedly provided on the facing end surfaces of the two long plates.

[0013] Preferably, the trigger unit includes a fixed frame located below the conveyor frame body, and the positions of the fixed frame and the conveyor frame body are relatively fixed, a rotating shaft is rotatably arranged inside the fixed frame, and a turntable is fixedly arranged on the top of the rotating shaft, two arc-shaped through grooves equidistantly distributed around the circumference are provided inside the turntable, and the ends of the two bent rods away from the long plate are respectively slidably mounted inside the two arc-shaped through grooves, the bent rods and the conveyor frame body are also axially slidably assembled, and the two end points of the arc-shaped through grooves are inconsistent with the center distance of the turntable, a tooth plate is also slidably arranged on the outer side of the fixed frame, and a transmission gear meshing with the tooth plate is fixedly mounted on the outer surface of the rotating shaft, a sliding plate is fixedly arranged on the end of the tooth plate away from the transmission gear, and the sliding plate is slidably assembled inside the straight groove, and the sliding plate slides axially.

[0014] Preferably, the plurality of first conveying rollers assembled inside the conveyor line frame body include three transmission speed segments, and the three transmission speed segments are respectively the first transmission segment, the second transmission segment, and the third transmission segment in the conveying direction. The transmission speeds of the first transmission segment and the third transmission segment are V1, and the transmission speed of the second transmission segment is V2, V2>V1, the partition space is located between the second transmission segment and the third transmission segment, and the buffer unit is located in the first transmission segment and the second transmission segment.

[0015] Preferably, a receiving unit is further provided between the two flip frames, and the receiving unit includes a limiting cylinder fixedly mounted on the bottom of one of the side edges of the two flip frames, and the axis of the limiting cylinder is distributed parallel to the other side of the flip frame, the limiting cylinder is located at the right side of the flip frame, the top of the limiting cylinder is axially slidably equipped with a push rod, the push rod extends into the one end of the limiting cylinder and is fixedly provided with a sliding plate, and the other end of the push rod is fixedly provided with a receiving seat through a connecting plate, and the receiving seat is located between the two second conveying rollers, a corrugated telescopic tube is fixedly provided between the end of the sliding plate away from the push rod and the limiting cylinder, and the two ends of the corrugated telescopic tube are sealed with the sliding plate and the limiting cylinder, and the bottom of the corrugated telescopic tube is fixedly connected with a bent pipe, the bent pipe extends out of the outside of the limiting cylinder, and the other end of the bent pipe is equipped with an air outlet pressure valve, and a supplementary component is also provided at the bottom of the limiting cylinder.

[0016] Preferably, the supplementary component includes a sealing cylinder fixedly mounted on the bottom of the limiting cylinder, and the sealing cylinder is connected to the bottom of the corrugated expansion tube, the interior of the sealing cylinder is slidably equipped with a piston disk, and the end of the piston disk away from the limiting cylinder is fixedly provided with a piston rod sliding through the sealing cylinder, the upper end of the sealing cylinder is also equipped with an air intake pressure valve, the exposed end of the piston rod is fixedly provided with a connecting rod, and the bottom of the conveyor line frame is also fixedly provided with an arc-shaped groove frame, and the end of the connecting rod is slidably embedded in the interior of the arc-shaped groove frame.

[0017] Preferably, the opening pressure of the inlet pressure valve is P1, the opening pressure of the outlet pressure valve is P2, and the pressure applied by the box to the sliding plate through the receiving seat is P3;

[0018] When P3>P2, the sliding plate moves downward to squeeze the air inside the bellows expansion pipe and discharge it through the air outlet pressure valve;

[0019] When P3≤P2, the sliding plate does not change position, and the sliding of the piston plate can suck the air inside the bellows to move the sliding plate downward. When the sliding plate moves downward to the maximum value and the piston plate still slides downward, the air inside the sealing tube is supplemented through the intake pressure valve.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention can flip and reverse the box being conveyed through the flipping unit on the conveyor frame, thereby facilitating the staff to perform all-round appearance inspection on the outer surface of the box, and can effectively avoid the existence of blind spots in the inspection on the outer surface of the box, thereby ensuring the comprehensiveness of the box inspection. During the operation of the flipping unit, the buffer unit can also be started through the trigger unit, and the buffer unit can limit the position of other boxes, thereby avoiding the accumulation of multiple boxes and reducing the workload of the flipping unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 A top view of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the flip unit of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the blocking plate and the curved portion of the present invention;

[0026] Figure 5 This is a schematic diagram of the straight groove and sliding block structure of the present invention;

[0027] Figure 6This is a schematic diagram of the structure of the trigger unit of the present invention;

[0028] Figure 7 This is a schematic diagram of the receiving seat position distribution structure of the present invention;

[0029] Figure 8 This is a schematic diagram of the internal structure of the limiting cylinder of the present invention;

[0030] Fig. 9 It is a schematic diagram of the structure of the flip frame of the present invention in the flip state.

[0031] In the figure: 1. conveyor frame; 2. first conveyor roller; 3. overturn frame; 4. cross seat plate; 5. lifting cylinder; 6. positioning frame; 7. slide bar; 8. long plate; 9. curved rod; 10. spring; 11. rubber pad; 12. straight groove; 13. sliding block; 14. blocking plate; 15. curved arc portion; 16. second conveyor roller; 17. fixed frame; 18. rotating shaft; 19. transmission gear; 20. tooth plate; 21. sliding plate; 22. turntable; 23. arc-shaped through groove; 24. limiting cylinder; 25. push rod; 26. sliding plate; 27. bellows telescopic tube; 28. sealing cylinder; 29. ​​piston disc; 30. piston rod; 31. connecting plate; 32. receiving seat; 33. inlet pressure valve; 34. outlet pressure valve; 35. connecting rod; 36. arc-shaped groove frame. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example 1: Please refer to Figure 1-Figure 5 , a turning device for carton conveying shown in the figure comprises: a conveyor frame body 1 and a plurality of first conveyor rollers 2 equidistantly distributed in a straight line and rotatably assembled inside the conveyor frame body 1, and a plurality of first conveyor rollers 2 are assembled for transmission through a transmission sprocket and a transmission wheel, and a plurality of first conveyor rollers 2 play a role in carrying and transporting the box body, and at least one partition space is provided between the plurality of first conveyor rollers 2, and a turning unit is installed inside the partition space, and the turning unit is used to drive the box body to turn over, and the turning unit can drive the box body to turn over 90 degrees, and the operation of each turning unit can turn the box body 90 degrees, and according to production needs, a plurality of partition spaces can be set, and a turning unit can be installed inside each partition space, so that the box body can be turned over several times by 90 degrees;

[0034] The flip unit includes two symmetrically distributed flip frames 3 located inside the partition space, the flip frames 3 are V-shaped, and the angle of the flip frames 3 is ninety degrees. Two groups of second conveying rollers 16 are rotatably mounted between the two flip frames 3, and the two groups of second conveying rollers 16 are also V-shaped. The number of each group of second conveying rollers 16 is several, and the two ends of one of the second conveying rollers 16 located at the top of the flip frame 3 are also rotatably mounted inside the conveyor frame 1, and the second conveying roller 16 located at one end of the flip frame 3 and the closest first conveying roller 2 are transmission mounted, and the second conveying roller 16 located on the right side is also transmission mounted through a transmission sprocket and a transmission chain. A horizontally placed cross seat plate 4 is hingedly assembled at the angle of the flip frame 3, a straight groove 12 is opened in the center of the cross seat plate 4, and the straight groove 12 is parallel to the conveyor frame 1, and a sliding block 13 is slidably assembled inside the straight groove 12. A lifting cylinder 5 is arranged below the conveyor frame 1, and the position of the lifting cylinder 5 and the conveyor frame 1 is relatively fixed, and the output end of the lifting cylinder 5 and the sliding block 13 are fixedly assembled. When the lifting cylinder 5 drives the telescopic rod to move upward, the flip frame 3 can be moved upward through the cross seat plate 4. Since the right end of the flip frame 3 and the conveyor frame 1 are rotatably assembled, the flip frame 3 will flip when it moves upward.

[0035] The axis of the second conveyor roller 16 rotatably assembled with the conveyor frame 1 is on the same horizontal plane as the axis of the first conveyor roller 2. At the same time, the outer diameters of the second conveyor roller 16 and the first conveyor roller 2 are consistent, which ensures that after the flipping frame 3 is flipped, the box can be transported to the first conveyor roller 2 by the second conveyor roller 16.

[0036] A blocking component is also provided between the cross seat plate 4 and the conveyor frame body 1, and the blocking component includes a blocking plate 14 vertically slidably assembled inside the conveyor frame body 1, and the blocking plate 14 is located between the movable end of the flip frame body 3 and the first conveying roller 2, and the bottom of the blocking plate 14 is also slidably sleeved on the outside of the cross seat plate 4, and the top of the blocking plate 14 is also provided with a curved portion 15, and the curved portion 15 is bent toward one side of the flip frame body 3. When the cross seat plate 4 moves upward, the blocking plate 14 also extends upward from the inside of the conveyor frame body 1, that is, it can play a temporary blocking role for the subsequent box body to prevent the box body from being stuck in the partition space.

[0037] Example 2: Please refer to Figure 1-Figure 6The present embodiment is a further explanation of the first embodiment. The buffer unit is located on the side of the blocking plate 14 away from the flip frame 3. Two symmetrically distributed long plates 8 are placed on the upper end surface of the conveyor frame 1. At least two sliding rods 7 are fixedly arranged on one end surface of the two long plates 8 away from each other, and the outer surface of each sliding rod 7 is also slidably sleeved with a positioning frame 6 fixed to the conveyor frame 1. The long plates 8 are parallel to the conveyor frame 1. Two symmetrically distributed curved rods 9 are also arranged on the outside of the conveyor frame 1. The curved rod 9 is in the shape of a C-shaped frame. A spring 10 is fixedly arranged between one end of the curved rod 9 and the long plate 8, and the other end of the curved rod 9 extends to the bottom of the conveyor frame 1. A plurality of rubber pads 11 distributed in a straight line and equidistantly are fixedly arranged on the facing end surfaces of the two long plates 8. When the two long plates 8 move toward each other, they can clamp the box between the two long plates 8, and the rubber pads 11 can increase the friction between the long plates 8 and the box.

[0038] The trigger unit includes a fixed frame 17 located below the conveyor frame body 1, and the fixed frame 17 is relatively fixed to the position of the conveyor frame body 1. A rotating shaft 18 is rotatably arranged inside the fixed frame 17, and a rotating disk 22 is fixedly arranged on the top of the rotating shaft 18. Two arc-shaped through grooves 23 with equidistant distribution of the circumference are opened inside the rotating disk 22, and the ends of the two curved rods 9 away from the long plate 8 are respectively slidably mounted inside the two arc-shaped through grooves 23. The curved rods 9 and the conveyor frame body 1 are also axially slidably assembled, and the sliding directions of the two curved rods 9 are opposite or opposite. The two ends of the arc-shaped through groove 23 are not consistent with the center distance of the turntable 22. A tooth plate 20 is also slidably provided on the outer side of the fixed frame 17, and a transmission gear 19 meshing with the tooth plate 20 is fixedly sleeved on the outer surface of the rotating shaft 18. A sliding plate 21 is fixedly provided on the end of the tooth plate 20 away from the transmission gear 19, and the sliding plate 21 is slidably assembled in the straight groove 12. The sliding plate 21 slides axially. While the cross seat plate 4 rises upward, it can also move horizontally to the left, that is, it can push the tooth plate 20 to drive the transmission gear 19 to rotate.

[0039] A plurality of first conveying rollers 2 assembled inside the conveyor line frame 1 include three transmission speed sections, which are the first transmission section, the second transmission section, and the third transmission section respectively in the conveying direction. The transmission speeds of the first transmission section and the third transmission section are V1, and the transmission speed of the second transmission section is V2, V2>V1, the partition space is located between the second transmission section and the third transmission section, and the buffer unit is located in the first transmission section and the second transmission section. Through differential processing, the box close to the isolation space can be quickly moved to the flip frame 3, and the distance between the box and the next box can be increased, providing sufficient flipping operation time for the flip frame 3.

[0040] Example 3: Please refer to Figure 7-Figure 9, this embodiment is a further description of the first embodiment, a receiving unit is further provided between the two flip frames 3, the receiving unit includes a limiting cylinder 24 fixedly mounted on the bottom of one side of the two flip frames 3, and the axis of the limiting cylinder 24 is parallel to the other side of the flip frame 3, the limiting cylinder 24 is located on the right side of the flip frame 3, the top of the limiting cylinder 24 is axially slidably equipped with a push rod 25, the end of the push rod 25 extending into the inside of the limiting cylinder 24 is fixedly provided with a sliding plate 26, and the other end of the push rod 25 is fixedly provided with a receiving seat 32 through a connecting plate 31, the receiving seat 32 is located between the two second conveying rollers 16, the sliding plate 2 A bellows expansion tube 27 is fixedly arranged between the end away from the push rod 25 and the limiting cylinder 24, and the two ends of the bellows expansion tube 27 are sealed with the sliding plate 26 and the limiting cylinder 24. A bent pipe is fixedly arranged at the bottom of the bellows expansion tube 27, and the bent pipe extends out of the limiting cylinder 24. The other end of the bent pipe is equipped with an air outlet pressure valve 34. In the initial state, the interior of the bellows expansion tube 27 is filled with air and is in an expanded state. When the box body falls, it will first contact the receiving seat 32 and squeeze the bellows expansion tube 27, and the bellows expansion tube 27 can buffer the force of the box body falling. A supplementary component is also arranged at the bottom of the limiting cylinder 24.

[0041] The supplementary parts include a sealing cylinder 28 fixedly assembled at the bottom of the limiting cylinder 24, and the sealing cylinder 28 is connected to the bottom of the bellows expansion tube 27, a piston disc 29 is slidably assembled inside the sealing cylinder 28, and a piston rod 30 is fixedly arranged at one end of the piston disc 29 away from the limiting cylinder 24 and slidingly penetrates the sealing cylinder 28, an upper end of the sealing cylinder 28 is also equipped with an air intake pressure valve 33, and a connecting rod 35 is fixedly arranged at the exposed end of the piston rod 30, and an arc-shaped groove frame 36 is also fixedly mounted at the bottom of the conveyor frame 1, and the end of the connecting rod 35 is slidably embedded in the interior of the arc-shaped groove frame 36, and the position of the arc-shaped groove frame 36 is fixed, and when the flipping frame 3 is flipped and the position of the sealing cylinder 28 changes, the piston rod 30 can be pulled downward by the cooperation between the arc-shaped groove frame 36 and the connecting rod 35.

[0042] Working principle: The first conveyor roller 2 on the conveyor frame 1 conveys the box from left to right. In the initial state, the flip frame 3 is attached. Figure 7 In the state of the box, the box can slide directly into the flip frame 3 in an inclined state. At this time, the cross seat plate 4 is lifted by the lifting cylinder 5. Since the lifting cylinder 5 drives the sliding block 13 to move vertically upward, the cross seat plate 4 will move horizontally to the left when it moves upward. At the same time, the blocking plate 14 will gradually rise. When the flip frame 3 is flipped over, it is attached Fig. 9The blocking plate 14 can also have a partition effect on the subsequent boxes, preventing the boxes from being stuck between the flip frame 3 and the partition space. After the flip frame 3 is flipped, the box can be flipped 90 degrees. At the same time, under the drive of the second conveyor roller 16, the flipped box is transferred to the first conveyor roller 2, allowing the box to continue to be transported. Through this flipping method, it is possible to ensure that the boxes are fully inspected and processed, thereby avoiding the situation where the damaged parts cannot be completely detected.

[0043] It should be noted that the cross seat plate 4 can push the tooth plate 20 when moving upward and to the left at the same time, causing the transmission gear 19 to rotate with the turntable 22. The two curved rods 9 can move synchronously toward each other through the limit processing of the curved rod 9 by the arc-shaped through groove 23 and the limit of the curved rod 9 by the conveyor frame 1. The curved rod 9 can push the long plate 8 through the spring 10, driving the two long plates 8 to play an elastic clamping and limiting role on the multiple boxes on the conveyor frame 1. The clamped and limited boxes cannot continue to be transported by the first conveyor roller 2, thereby preventing the flip frame 3 and the blocking plate 14 from sticking to each other when they are in the raised state, affecting the normal flipping of the subsequent boxes. In addition, the clamping of the two long plates 8 on the box can also play a centering role on the box, thereby ensuring the stability of the box transportation.

[0044] In this solution, the weight of the product loaded in the box is also taken into consideration. If the product loaded in the box is heavy, it will slide down in the flip frame 3 and hit the other side of the flip frame 3 with great force, and the reaction force generated by the impact can be easily transmitted to the product through the box, causing damage to the product. Therefore, the receiving unit in this solution can play a buffering effect on the fall of the box:

[0045] Among them, the opening pressure of the inlet pressure valve 33 is P1, the opening pressure of the outlet pressure valve 34 is P2, and the pressure applied by the box to the sliding plate 26 through the receiving seat 32 is P3;

[0046] When P3>P2, the sliding plate 26 moves downward to squeeze the air inside the bellows 27 and discharge it through the air outlet pressure valve 34. The slow discharge of the air inside the bellows 27 can buffer the box body, and can buffer the impact force between the box body and the receiving seat 32, effectively reducing the reaction force on the product in the box body. Under the action of the weight of the box body, the end surface of the receiving seat 32 can be pressed down to coincide with the cross-section of the second conveying roller 16, that is, the two surfaces of the box body can be respectively contacted with the two groups of second conveying rollers 16. Since the sliding plate 26 has been squeezed and moved downward to the maximum value, the bellows 27 can no longer be pressed During the turning process of the turning frame 3, the piston disc 29 can be pulled downward by the engagement of the connecting rod 35 and the arc-shaped groove frame 36. Since the bellows expansion tube 27 can no longer be compressed, the sealing cylinder 28 can only be supplemented with air through the air inlet pressure valve 33. After the subsequent box is moved away, when the turning frame 3 is reset, the reset of the piston disc 29 can inject the air inside the sealing cylinder 28 into the bellows expansion tube 27, so that the compressed bellows expansion tube 27 can be expanded again and the sliding disc 26 can be reset. After the sliding disc 26 is completely reset, the continuous injection of air inside the sealing cylinder 28 will allow the excess air to be discharged through the air outlet pressure valve 34.

[0047] When P3≤P2, the sliding plate 26 does not change position. Since the weight of the box is too light to touch the sliding plate 26, when the turning frame 3 turns over, the downward movement of the piston plate 29 can first draw the air inside the bellows 27 into the inside of the sealing tube 28, so that the bellows 27 is compressed, and the sliding plate 26 and the receiving seat 32 change position to ensure that the two end faces of the box can contact the two sets of second conveying rollers 16 respectively, and ensure that the turning frame 3 can transfer the box to the first conveying roller 2 through the second conveying roller 16 after the turning is completed. When the bellows 27 is compressed to the maximum value and the piston plate 29 is still moving downward, the air inside the sealing tube 28 can be supplemented from the outside through the intake pressure valve 33.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A turning device for carton conveying, characterized in that: include: A conveyor frame (1) and a plurality of first conveyor rollers (2) rotatably mounted inside the conveyor frame (1), wherein the plurality of first conveyor rollers (2) carry and transport the box, a partition space is provided between the plurality of first conveyor rollers (2), a flip unit is installed inside the partition space, and the flip unit is used to drive the box to perform a flipping action; Also includes: A buffer unit, which prevents a plurality of boxes on the conveyor frame (1) from simultaneously abutting against the flip unit, and is used to reduce the load of the flip unit, wherein the buffer unit is arranged on the side of the flip unit; a trigger unit, used for connecting between the flip unit and the buffer unit, and driving the buffer unit to operate through the trigger unit when the flip unit operates; The flip unit comprises two flip frames (3) located inside the partition space, the flip frames (3) are V-shaped, and the angle between the flip frames (3) is ninety degrees. Two groups of second conveying rollers (16) are rotatably mounted between the two flip frames (3), and the two groups of second conveying rollers (16) are also distributed in a V-shape. The number of second conveying rollers (16) in each group is several, and both ends of one of the second conveying rollers (16) located at the top of the flip frame (3) are also rotatably mounted inside the conveyor frame (1). A transmission assembly is provided between the second conveying roller (16) at one end of the flip frame (3) and the first conveying roller (2) closest thereto; a cross seat plate (4) placed horizontally is hingedly provided at the angle of the flip frame (3); a straight groove (12) is provided at the center of the cross seat plate (4); a sliding block (13) is slidably provided inside the straight groove (12); a lifting cylinder (5) is provided below the conveyor line frame (1); an output end of the lifting cylinder (5) and the sliding block (13) are fixedly provided; A blocking component is also provided between the cross seat plate (4) and the conveyor frame (1), the blocking component comprising a blocking plate (14) vertically slidably mounted inside the conveyor frame (1), the buffer unit being located on the side of the blocking plate (14) away from the flip frame (3), two symmetrically distributed long plates (8) being placed on the upper end surface of the conveyor frame (1), at least two sliding rods (7) being fixedly provided on one end surface of the two long plates (8) away from each other, and a positioning frame (6) fixed to the conveyor frame (1) being slidably sleeved on the outer surface of each sliding rod (7), two symmetrically distributed bent rods (9) being also provided on the outside of the conveyor frame (1), a spring (10) being fixedly provided between one end of the bent rod (9) and the long plate (8), and the other end of the bent rod (9) extending to the bottom of the conveyor frame (1), and a plurality of rubber pads (11) being fixedly provided on the facing end surfaces of the two long plates (8).

2. The turning device for carton conveying according to claim 1, characterized in that: The axis of the second conveying roller (16) rotatably assembled with the conveying line frame (1) is located on the same horizontal plane as the axis of the first conveying roller (2).

3. The turning device for carton conveying according to claim 1 is characterized in that: The blocking plate (14) is located between the turning frame (3) and the first conveying roller (2), and the bottom of the blocking plate (14) is also slidably sleeved on the outside of the cross seat plate (4).

4. The turning device for carton conveying according to claim 1 is characterized in that: The trigger unit comprises a fixed frame (17) located below the conveyor frame (1), a rotating shaft (18) is rotatably arranged inside the fixed frame (17), and a rotating disk (22) is fixedly arranged on the top of the rotating shaft (18), two arc-shaped through grooves (23) equidistantly distributed on a circumference are provided inside the rotating disk (22), and the ends of the two curved rods (9) away from the long plate (8) are respectively slidably mounted inside the two arc-shaped through grooves (23), and the curved rods (9) and the conveyor frame (1) are also axially slidably assembled, a tooth plate (20) is also slidably arranged on the outer side of the fixed frame (17), and a transmission gear (19) meshing with the tooth plate (20) is fixedly sleeved on the outer surface of the rotating shaft (18), and a sliding plate (21) is fixedly arranged on the end of the tooth plate (20) away from the transmission gear (19), and the sliding plate (21) is slidably assembled inside the straight groove (12).

5. The turning device for carton conveying according to claim 1 is characterized in that: The plurality of first conveying rollers (2) assembled inside the conveyor frame (1) include three transmission speed sections, which are respectively a first transmission section, a second transmission section, and a third transmission section in the conveying direction. The transmission speeds of the first transmission section and the third transmission section are V1, and the transmission speed of the second transmission section is V2, V2>V1. The partition space is located between the second transmission section and the third transmission section, and the buffer unit is located in the first transmission section and the second transmission section.

6. The turning device for carton conveying according to claim 5, characterized in that: A receiving unit is further provided between the two flip frames (3), the receiving unit comprising a limiting cylinder (24) fixedly mounted on the bottom of one side of the two flip frames (3), and the axis of the limiting cylinder (24) is parallel to the other side of the flip frame (3), the top of the limiting cylinder (24) is axially slidably equipped with a push rod (25), one end of the push rod (25) extending into the interior of the limiting cylinder (24) is fixedly provided with a sliding plate (26), and the other end of the push rod (25) is connected to the bottom of the two flip frames (3) through a connecting plate ( 31) A fixed frame is provided with a receiving seat (32), and the receiving seat (32) is located between the two second conveying rollers (16). A bellows telescopic tube (27) is fixedly provided between the end of the sliding plate (26) away from the push rod (25) and the limiting cylinder (24). A bent pipe is fixedly connected to the bottom of the bellows telescopic tube (27), and the bent pipe extends out of the outside of the limiting cylinder (24). The other end of the bent pipe is equipped with an air outlet pressure valve (34). A supplementary component is also provided at the bottom of the limiting cylinder (24).

7. The turning device for carton conveying according to claim 6, characterized in that: The supplementary component comprises a sealing cylinder (28) fixedly mounted on the bottom of the limiting cylinder (24), and the sealing cylinder (28) is communicated with the bottom of the bellows expansion tube (27); a piston disc (29) is slidably mounted inside the sealing cylinder (28), and a piston rod (30) is fixedly mounted on one end of the piston disc (29) away from the limiting cylinder (24) and slidingly penetrates the sealing cylinder (28); an air intake pressure valve (33) is also mounted on the upper end of the sealing cylinder (28); a connecting rod (35) is fixedly mounted on the exposed end of the piston rod (30); an arc-shaped groove frame (36) is also fixedly mounted on the bottom of the conveyor frame (1), and the end of the connecting rod (35) is slidably embedded in the interior of the arc-shaped groove frame (36).

8. The turning device for carton conveying according to claim 7, characterized in that: The opening pressure of the air inlet pressure valve (33) is P1, the opening pressure of the air outlet pressure valve (34) is P2, and the pressure applied by the box to the sliding plate (26) through the receiving seat (32) is P3; When P3>P2, the sliding plate (26) moves downward to squeeze the air inside the bellows expansion tube (27) and discharge it through the air outlet pressure valve (34); When P3≤P2, the sliding plate (26) does not change position, and the piston plate (29) slides down to suck the air inside the bellows expansion tube (27) to move the sliding plate (26) downward. When the sliding plate (26) moves down to the maximum value and the piston plate (29) still slides down, the air inside the sealing tube (28) is replenished through the intake pressure valve (33).

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