Automatic turn-over mechanism for packaging box printing

Abstract

The utility model discloses an automatic turn-over mechanism for packaging box printing, which belongs to the technical field of packaging box printing turn-over and comprises a fixing plate and a driving motor, two sides of the fixing plate are fixedly connected with side plates, a driven roll shaft and a driving roll shaft are respectively arranged between the two side plates, and the outer end of each of the driven roll shaft and the driving roll shaft is sleeved with three conveying belts. Gaps are formed among the three conveying belts, a turn-over assembly is arranged at the bottom end of the fixing plate, a driving assembly is arranged on the outer side of the side plate, the conveying belts are driven by a driving roller shaft to conduct transmission, the packaging boxes are conveyed to the turn-over assembly, a turn-over frame is driven by the driving assembly, and the turn-over frame is arranged in a cross shape; the turnover frame rotates by 90 degrees to drive the packaging box to rotate by 90 degrees, at the moment, the packaging box makes contact with the conveying belt and is driven by the conveying belt to be conveyed forwards, the packaging box is driven to turn over through rotation of the turnover frame, continuous operation can be conducted, and the working efficiency of the turnover frame is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of printing and turning over of packaging boxes, and more particularly to an automatic printing and turning over mechanism for packaging boxes. Background Art

[0002] An automatic flipping mechanism for packaging printing refers to a device or mechanism used to automatically flip printed materials (such as paper, packaging boxes, etc.) on a packaging printing production line. This mechanism is typically used during double-sided printing, automatically flipping the printed material from one side to the other to complete double-sided printing. This mechanism can improve printing efficiency, reduce manual intervention, and ensure printing quality and production efficiency.

[0003] The Chinese patent publication number CN218664031U discloses an automatic flipping device for printing on packaging boxes, which rotates by running a motor, and the rotation of the motor drives the first gear to rotate, and the rotation of the first gear drives the second gear to rotate, and the rotation of the second gear drives the flipping mechanism to flip the packaging box, so that the packaging box is flipped over. After flipping, the packaging box will be placed on the upper part of the second conveyor belt, and the packaging box will be transported by the second conveyor belt. The flipped surface of the packaging box is printed by an external printing mechanism. By providing a through slot and a limiting rod, the limiting rod can slide inside the through slot to limit the positions of the first clamping seat and the second clamping seat, thereby assisting the first clamping seat and the second clamping seat to better move.

[0004] The flipping mechanism in the above solution is similar to a robotic arm. When flipping, the package box needs to be clamped and flipped over. Then the flipping mechanism needs to be reset before the next package box can be flipped over. It takes a certain amount of time to complete the flipping operation, which will reduce the overall production efficiency, especially on high-speed production lines. At the same time, clamping and flipping may cause damage to the printed materials during the operation, such as scratches, deformation or tearing, reducing printing quality and material utilization.

[0005] Therefore, it is necessary to provide a packaging box printing automatic turning mechanism to solve the above problems. Utility Model Content

[0006] The utility model provides an automatic flipping mechanism for printing on packaging boxes, which can improve the problem in related technologies that when flipping, the packaging box needs to be clamped and flipped over, and then the flipping mechanism needs to be reset before the next packaging box can be flipped over, which will reduce the overall production efficiency. At the same time, clamping and flipping may cause damage to the printed material during operation, such as scratches, deformation or tearing.

[0007] The embodiment of the application provides a packaging box printing automatic turnover mechanism, which comprises a fixed plate and a driving motor, the both sides of the fixed plate are fixedly connected with side plates, passive roller shafts and driving roller shafts are arranged between the two side plates respectively, three conveying belts are arranged on the outer ends of the passive roller shafts and the driving roller shafts, gaps are arranged between the three conveying belts, a turnover assembly is arranged at the bottom end of the fixed plate, a driving assembly is arranged outside the side plate, limit blocks are fixedly connected to the inner sides of the conveying belts, the limit blocks are arranged in the shape of isosceles trapezoid, the passive roller shafts comprise roller shaft bodies, three limiting grooves are formed in the outer ends of the roller shaft bodies, the limiting grooves are matched with the limit blocks, and anti-skid lines are arranged on the outer ends of the roller shaft bodies.

[0008] The technical scheme has at least the following technical effects: the driving roller shafts drive the conveying belts to transmit power, the packaging box is transported to the turnover assembly, the turnover frame is driven by the driving assembly, the turnover frame is arranged in the shape of cross, when the packaging box reaches one side of the turnover frame, the turnover frame rotates by 90 degrees to drive the packaging box to rotate by 90 degrees, the packaging box contacts the conveying belt again and is driven by the conveying belt to be transported forward, the packaging box is turned over by the rotation of the turnover frame, and the turnover can be continuously performed, so that compared with the turnover after clamping, the working efficiency can be improved.

[0009] In some embodiments, the roller shaft bodies and the driving roller shafts are rotatably connected between the two side plates, and a speed changing device is mounted at the outer ends of the side plates.

[0010] In some embodiments, the driving motor is connected with the speed changing device, the speed changing device is connected with the driving roller shaft, and a plurality of supports are fixedly connected to the outer ends of the side plates.

[0011] In some embodiments, the turnover assembly comprises a transmission shaft and two turnover frames, the two turnover frames are fixedly mounted at the outer ends of the transmission shaft, two through holes are formed in the outer ends of the fixed plate, the turnover frames penetrate through the through holes, the turnover frames extend above the conveying belts, and the turnover frames are arranged in the shape of cross.

[0012] In some embodiments, the driving assembly comprises a mounting frame, the mounting frame is fixedly mounted at the outer ends of the side plates, a servo motor is mounted at the top end of the mounting frame, a housing is mounted at the top end of the mounting frame, and a driving gear is arranged in the housing.

[0013] In some embodiments, the transmission shaft penetrates through the housing to extend to the inside, the driving gear is fixedly mounted at the outer end of the transmission shaft, a half gear is key-connected to the output end of the servo motor, and the half gear is meshed with the driving gear.

[0014] In some embodiments, the drive assembly also includes a limiting ring and a fixing ring, the limiting ring is fixedly mounted on the inner wall of the shell, the fixing ring is fixed to the outer end of the transmission shaft, a plurality of sliding grooves are provided on the inner side of the limiting ring, a telescopic spring is provided inside the sliding groove, one end of the telescopic spring is fixedly connected to an abutment block, the abutment block is slidably connected to the inner wall of the sliding groove, a plurality of abutment grooves adapted to the abutment block are opened on the outer end of the fixing ring, and the abutment block abuts against the abutment groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the partial explosion structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the roller structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the conveyor belt structure of the present utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the flip assembly of the utility model;

[0021] Figure 6 This is a schematic diagram of the drive assembly structure of the utility model;

[0022] Figure 7 It is a schematic diagram of a partially enlarged structure of the drive component of the present utility model.

[0023] Description of the numbers in the figure:

[0024] 1. Side panels;

[0025] 2. Turnover assembly; 21. Turnover frame; 22. Drive shaft;

[0026] 3. Drive assembly; 31. Mounting frame; 32. Servo motor; 33. Housing; 34. Half gear; 35. Drive gear; 36. Limiting ring; 37. Fixing ring; 38. Telescopic spring; 39. Abutment block; 310. Abutment groove;

[0027] 4. Conveyor belt;

[0028] 5. Passive roller; 51. Roller body; 52. Limiting groove; 53. Anti-slip groove;

[0029] 6. Active roller shaft;

[0030] 7. Drive motor;

[0031] 8. Speed ​​change device;

[0032] 9. Bracket;

[0033] 10. Fixed plate;

[0034] 11. Limit block. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0036] Based on this, the problem in the related technology that the packaging box needs to be clamped and turned over when turning it over, and then the turning mechanism needs to be reset before the next packaging box can be turned over can be turned over, which will reduce the overall production efficiency. At the same time, clamping and turning the box may cause damage to the printed material during the operation, such as scratches, deformation or tearing.

[0037] See also Figure 1-Figure 7 , a packaging box printing automatic flipping mechanism, including a fixed plate 10 and a drive motor 7, side plates 1 are fixedly connected on both sides of the fixed plate 10, a passive roller 5 and an active roller 6 are respectively arranged between the two side plates 1, the outer ends of the passive roller 5 and the active roller 6 are sleeved with three conveyor belts 4, and gaps are provided between the three conveyor belts 4, a flipping component 2 is provided at the bottom end of the fixed plate 10, a driving component 3 is provided on the outside of the side plate 1, a limiting block 11 is fixedly connected to the inside of the conveyor belt 4, and the cross-section of the limiting block 11 is an isosceles trapezoidal arrangement, the passive roller 5 includes a roller body 51, three limiting grooves 52 are opened at the outer end of the roller body 51, the limiting grooves 52 are adapted to the limiting blocks 11, and the outer end of the roller body 51 is provided with anti-slip grooves 53.

[0038] The roller body 51 and the active roller 6 are both rotatably connected between the two side plates 1 , and a speed change device 8 is installed at the outer end of the side plate 1 .

[0039] The output end of the driving motor 7 is connected to the speed change device 8 , the output end of the speed change device 8 is connected to the active roller shaft 6 , and a plurality of brackets 9 are fixedly connected to the outer end of the side plate 1 .

[0040] When printing a packaging box, it is usually necessary to print on multiple sides. The device in this scheme is mainly used to flip the packaging box during the printing process. Side panels 1 are fixed on both sides of the fixed plate 10, and a passive roller 5 and an active roller 6 are arranged between the two side panels 1. The passive roller 5 and the active roller 6 have the same structure. The main difference is that the active roller 6 is directly driven by the drive motor 7, while the passive roller 5 is passively driven. Three conveyor belts 4 are sleeved on the outer ends of the passive roller 5 and the active roller 6. A gap is set between each conveyor belt 4. The gap is mainly used to allow the flipping frame 21 to pass through. Multiple brackets 9 are fixed to the outer ends of the two side panels 1 by bolts to support the device. A drive assembly 3 is arranged on the outside of the front side panel 1. The drive assembly 3 is mainly used to drive the flipping assembly 2. At the same time, a speed change device 8 is also fixed to the outer end of the side panel 1. The input end of the speed change device 8 is connected to the output end of the drive motor 7. The speed change device 8 is mainly used to decelerate the power of the drive motor 7 and increase the torque, and then drive the active roller 6 to rotate.

[0041] A stopper 11 is fixed to the inner side of the conveyor belt 4. The stopper 11 is an outwardly protruding, isosceles trapezoidal cross-section. The roller body 51 is provided with three stopper grooves 52. The stopper grooves 52 are concave and match the stopper 11. Since three conveyor belts 4 are provided at the outer end of the roller body 51, when the three conveyor belts 4 rotate, their positions may shift. By locking the stopper 11 in the stopper groove 52, the conveyor belts 4 can always be kept in the corresponding position without shifting, thereby improving their operational stability. Anti-skid grooves 53 are provided on the roller body 51. The anti-skid grooves 53 are mainly used to increase the friction between the stopper 11 and the roller body 51 during contact.

[0042] The conveyor belt 4 is driven by the active roller 6 to transmit the package box to the turning assembly 2. The turning frame 21 is driven by the driving assembly 3, and the turning frame 21 is arranged in a cross shape. When the package box reaches one side of the turning frame 21, the turning frame 21 rotates ninety degrees, which can drive the package box to rotate ninety degrees. At this time, the package box will contact the conveyor belt 4 again and will be driven forward by the conveyor belt 4. The package box is turned over by the rotation of the turning frame 21, which can be carried out continuously. Therefore, compared with the flipping after clamping, the work efficiency can be improved.

[0043] Optionally, in some embodiments, see Figure 1 and Figure 5 The flip assembly 2 includes a transmission shaft 22 and two flip frames 21. The two flip frames 21 are fixedly installed on the outer end of the transmission shaft 22. Two through holes are opened at the outer end of the fixed plate 10. The outer ends of the flip frames 21 pass through the through holes, and the flip frames 21 extend to above the conveyor belt 4. The flip frames 21 are arranged in a cross shape.

[0044] Two through holes are provided at the outer end of the fixed plate 10 so that the flip frame 21 can pass through. The two flip frames 21 are fixed on the transmission shaft 22. One end of the transmission shaft 22 is rotatably connected to the side plate 1, and the other end passes through the other side plate 1 and is connected to the drive assembly 3. The flip frame 21 is cross-shaped, so that it has four straight edges, each of which allows the packaging box to slide onto it. When the flip frame 21 is installed, its horizontal straight edge will be slightly lower than the outer surface height of the conveyor belt 4. With this arrangement, when the packaging box is driven by the conveyor belt 4, the flip frame 21 will be When the turning frame 21 moves to the straight edge of the turning frame 21, the straight edge of the turning frame 21 will not block it. When the turning frame 21 rotates ninety degrees, the packaging box can also be brought into contact with the conveyor belt 4 first, so that the packaging box can be transported away by the conveyor belt 4. By setting the turning frame 21 to rotate ninety degrees each time, the packaging box can be continuously turned over and transported to the other side. It is worth mentioning that setting a set of turning components 2 can turn the packaging box ninety degrees. When it needs to be turned one hundred and eighty degrees, it can be achieved by adding an additional set of turning components 2.

[0045] Optionally, in some embodiments, see Figure 1-Figure 7 The driving assembly 3 includes a mounting frame 31, which is fixedly mounted on the outer end of the side plate 1. A servo motor 32 is mounted on the top of the mounting frame 31, and a shell 33 is mounted on the top of the mounting frame 31. A driving gear 35 is arranged inside the shell 33.

[0046] The transmission shaft 22 extends through the housing 33 to the interior, and the driving gear 35 is fixedly mounted on the outer end of the transmission shaft 22 . The output end of the servo motor 32 is keyed to a half gear 34 , which is meshed with the driving gear 35 .

[0047] The driving assembly 3 also includes a limiting ring 36 and a fixing ring 37. The limiting ring 36 is fixedly mounted on the inner wall of the shell 33, and the fixing ring 37 is fixed to the outer end of the transmission shaft 22. A plurality of slide grooves are provided on the inner side of the limiting ring 36, and a telescopic spring 38 is provided inside the slide groove. One end of the telescopic spring 38 is fixedly connected to an abutment block 39, and the abutment block 39 is slidably connected to the inner wall of the slide groove. A plurality of abutment grooves 310 adapted to the abutment blocks 39 are provided on the outer end of the fixing ring 37, and the abutment blocks 39 abut against the abutment grooves 310.

[0048] The driving assembly 3 in this scheme is mainly used to drive the flipping frame 21 to rotate. The mounting frame 31 is fixed to the outer end of one of the side panels 1. The servo motor 32 and the housing 33 are respectively installed on the mounting frame 31. A driving gear 35 is provided inside the housing 33. The transmission shaft 22 will extend through the housing 33 and be fixedly connected to the driving gear 35 inside. The half gear 34 is connected to the output end of the servo motor 32 through a key. The half gear 34 and the driving gear 35 are meshed and connected to transmit the power of the servo motor 32. A tooth surface is provided at one-quarter of the outer circumference of the half gear 34. In this way, after the half gear 34 rotates one circle, it will only drive the driving gear 35 to rotate a quarter of a circle, thereby achieving the purpose of causing the transmission shaft 22 to drive the flipping frame 21 to rotate ninety degrees.

[0049] A limiting ring 36 is also fixed on the inner wall of the shell 33, and a fixing ring 37 is fixed on the transmission shaft 22. Four sliding grooves are provided on the inner side of the limiting ring 36, and a telescopic spring 38 is fixed inside each sliding groove. One end of the telescopic spring 38 is fixed to an abutment block 39, and the abutment block 39 is slidably connected to the sliding groove. Four abutment grooves 310 that are compatible with the abutment block 39 are provided on the outer end of the fixing ring 37. Whenever the transmission shaft 22 rotates ninety degrees, the fixing ring 37 will rotate ninety degrees, so that the abutment grooves 310 and the abutment blocks 39 will re-abut, thereby ensuring that when the half gear 34 and the driving gear 35 are not engaged, the transmission shaft 22 will not rotate, thereby preventing the flip frame 21 from rotating on its own, and ensuring that the transmission shaft 22 rotates ninety degrees when the half gear 34 rotates one circle.

[0050] When the servo motor 32 drives the half gear 34 to rotate, the half gear 34 intermittently meshes with the drive gear 35, causing the half gear 34 to rotate one circle and the drive gear 35 to rotate ninety degrees. At this time, the abutment block 39, due to the force of the telescopic spring 38, abuts against the abutment groove 310, which assists the drive shaft 22 in rotating and then stops moving, thereby allowing the packaging box that slides onto the straight edge of the flipping rack 21 to be rotated ninety degrees. It is worth mentioning that since the flipping rack 21 can only flip one packaging box at a time, the rotation frequency of the flipping rack 21 needs to match the transportation speed of the conveyor belt 4 to ensure better coordination.

[0051] Working principle: When the device is used, the packaging box transported on the conveyor belt 4 will be pushed to the straight edge of the flip rack 21. At this time, the servo motor 32 drives the half gear 34 to rotate. The half gear 34 is intermittently engaged with the drive gear 35, so that the half gear 34 rotates one circle, and the drive gear 35 rotates ninety degrees. At this time, the abutment block 39 is abutted in the abutment groove 310 by the force of the telescopic spring 38, which can assist the drive shaft 22 to rotate and no longer move, so that the packaging box that slides to the straight edge of the flip rack 21 can be rotated ninety degrees, and then flipped to the other side of the flip rack 21, and then transported forward by the conveyor belt 4. By setting the flip rack 21 to rotate ninety degrees each time, the packaging box can be continuously flipped over and transported to the other side.

Claims

1. A packaging box printing automatic flipping mechanism, comprising a fixed plate (10) and a drive motor (7), characterized in that: The fixed plate (10) is fixedly connected to side plates (1) on both sides, and a passive roller (5) and an active roller (6) are respectively provided between the two side plates (1). The outer ends of the passive roller (5) and the active roller (6) are sleeved with three conveyor belts (4), and gaps are provided between the three conveyor belts (4). The bottom end of the fixed plate (10) is provided with a turning assembly (2), and the outer side of the side plate (1) is provided with a driving assembly (3); A limiting block (11) is fixedly connected to the inner side of the conveyor belt (4), and the cross section of the limiting block (11) is arranged in an isosceles trapezoidal shape; The passive roller (5) comprises a roller body (51), the outer end of the roller body (51) is provided with three limiting grooves (52), the limiting grooves (52) are adapted to the limiting blocks (11), and the outer end of the roller body (51) is provided with anti-slip grooves (53).

2. The automatic flipping mechanism for printing a packaging box according to claim 1, characterized in that: The roller body (51) and the active roller (6) are both rotatably connected between the two side plates (1), and a speed change device (8) is installed at the outer end of the side plate (1).

3. The automatic flipping mechanism for printing on a packaging box according to claim 2, characterized in that: The output end of the driving motor (7) is connected to the speed change device (8), the output end of the speed change device (8) is connected to the active roller shaft (6), and the outer end of the side plate (1) is fixedly connected to a plurality of brackets (9).

4. The automatic flipping mechanism for printing a packaging box according to claim 1, characterized in that: The turning assembly (2) comprises a transmission shaft (22) and two turning frames (21), the two turning frames (21) are fixedly mounted on the outer end of the transmission shaft (22), the outer end of the fixing plate (10) is provided with two through holes, the outer ends of the turning frames (21) pass through the through holes, and the turning frames (21) extend above the conveyor belt (4), and the turning frames (21) are arranged in a cross shape.

5. The automatic printing flipping mechanism for packaging boxes according to claim 4, characterized in that: The driving assembly (3) includes a mounting frame (31), the mounting frame (31) is fixedly mounted on the outer end of the side plate (1), a servo motor (32) is mounted on the top end of the mounting frame (31), and a housing (33) is mounted on the top end of the mounting frame (31), and a driving gear (35) is arranged inside the housing (33).

6. The automatic printing flipping mechanism for packaging boxes according to claim 5, characterized in that: The transmission shaft (22) passes through the housing (33) and extends to the interior. The driving gear (35) is fixedly mounted on the outer end of the transmission shaft (22). The output end of the servo motor (32) is keyed to a half gear (34). The half gear (34) is meshed with the driving gear (35).

7. The automatic printing flipping mechanism for packaging boxes according to claim 6, characterized in that: The driving assembly (3) further comprises a limiting ring (36) and a fixing ring (37), wherein the limiting ring (36) is fixedly mounted on the inner wall of the housing (33), and the fixing ring (37) is fixed to the outer end of the transmission shaft (22). A plurality of slide grooves are provided on the inner side of the limiting ring (36), and a telescopic spring (38) is provided inside the slide groove. One end of the telescopic spring (38) is fixedly connected to an abutting block (39), and the abutting block (39) is slidably connected to the inner wall of the slide groove. A plurality of abutting grooves (310) adapted to the abutting blocks (39) are provided on the outer end of the fixing ring (37), and the abutting blocks (39) abut against the abutting grooves (310).

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