An efficient turning device and turning production line for palletizing pre-printed aluminum plates

Abstract

A high-efficiency turning device and turning line for stacking pre-printed aluminum plates. The turning device comprises two oppositely spaced turntables, a turning drive mechanism for driving the turntables, and two sets of first conveyor rollers fixed between the two turntables. The conveying directions of the two sets of first conveyor rollers are parallel to each other. A rectangular baffle is provided between the two sets of first conveyor rollers, which can slide along the conveying direction of the first conveyor rollers. Sliding shafts are provided on the sides of the rectangular baffles near the ends, and chute grooves are provided on the turntables for the sliding shafts at the corresponding positions to slide together. The present invention is used to improve turning efficiency to adapt to the production capacity adaptation requirements of multiple aluminum plate drying production lines.

Description

Technical Field

[0001] The invention relates to the technical field of production and processing of pre-printed aluminum plates, in particular to a high-efficiency turning device and a turning production line for stacking pre-printed aluminum plates. Background Art

[0002] Pre-printed aluminum sheet is a prefabricated plate-shaped raw material used to produce lids for various beverage, beer, canned food and other containers. After the trademark pattern, text information and other logos required by the customer are printed in an array on the aluminum strip, the continuous aluminum strip is cut into aluminum sheets, and the pre-printed aluminum sheets are obtained after drying and cooling. In downstream production, the whole piece of pre-printed aluminum sheet is stamped to simultaneously obtain multiple corresponding container lids. Conventional aluminum sheet drying production lines 3 usually dry the aluminum sheet through a drying tunnel with the printed surface facing up through a conveyor belt. After passing through the drying tunnel, the aluminum sheet flips over and falls onto the pallet 10 in the stacking box, so that multiple aluminum sheets form a pre-printed aluminum sheet stack 11 with the printed surface facing down.

[0003] Due to some customers' requirements, the pre-printed aluminum plates need to be delivered with the printed surface facing upwards for subsequent processing. Therefore, the pre-printed aluminum plates produced by the drying production line need to be turned over before being stored in the warehouse or directly loaded and delivered. Based on this, the applicant has developed a special mechanism for turning over pre-printed aluminum plates, such as Figure 8 and Figure 9 As shown, the dedicated turning mechanism has two turntables 2 and a turning drive mechanism 6 for driving the turntables 2 to rotate. There are two sets of upper and lower first conveyor rollers 1 between the two turntables 2. The front side of the first conveyor rollers 1 is provided with a track 4 covering multiple aluminum plate drying production lines 3. Second conveyor rollers 5 are slidably mounted on the track 4. The implementation process of the dedicated turning mechanism is as follows: After the second conveyor rollers 5 receive the pre-printed aluminum plate stacks 11 produced by each aluminum plate drying production line 3, the pre-printed aluminum plate stacks 11 are transported along the track 4 to the Figure 8 In the position shown, another pallet 10 is placed on top of the pre-printed aluminum sheet stack 11, and the second conveyor roller 5 and the first conveyor roller 1 cooperate to feed the pre-printed aluminum sheet stack 11 onto the first conveyor roller 1 at the bottom. The first conveyor roller 1 at the top is then driven down until it contacts the upper pallet 10. The turntable 2 is then driven by the turning drive mechanism 6 to rotate 180°, completing the turning of the pre-printed aluminum sheet stack 11. The pre-printed aluminum sheet stack 11 can then be removed by a forklift from the rear side of the turning mechanism.

[0004] During the above-mentioned turning process, in order to prevent the pre-printed aluminum plate stack 11 from falling off from the rear side of the first conveyor roller 1 during the turning process, a rectangular baffle 9 is provided between the turntables 2 at the rear side of the first conveyor roller 1. Figure 9As shown, the rectangular baffle 9 is fixedly mounted on the turntable 2, so that when a pre-printed aluminum plate stack 11 is turned over, the rectangular baffle 9 is also turned over to the front side of the first conveyor roller 1 close to the track 4, thereby blocking the second conveyor roller 5 from feeding another pre-printed aluminum plate stack 11 into the turning mechanism. At this time, the turntable 2 needs to be driven by the turning drive mechanism 6 to rotate 180 degrees again to return to the Figure 8 Only after reaching the initial state shown can the subsequent flipping of the pre-printed aluminum plate stack 11 be continued. However, in order to ensure the flipping stability of the pre-printed aluminum plate stack 11, the flipping drive mechanism 6 only drives the turntable 2 to rotate at a relatively slow speed, resulting in a relatively low flipping efficiency of the above technical solution, which cannot meet the output coordination requirements of multiple aluminum plate drying production lines 3. Summary of the Invention

[0005] The present invention aims to provide a high-efficiency turning device and a turning production line for stacking pre-printed aluminum plates, thereby improving the turning efficiency to meet the production capacity adaptation requirements of multiple aluminum plate drying production lines.

[0006] In order to solve the above technical problems, the specific solution adopted by the present invention is: an efficient turning device for stacking pre-printed aluminum plates, comprising two relatively distributed turntables, a turning drive mechanism for driving the turntables to rotate, and two groups of first conveyor rollers fixed between the two turntables, the conveying directions of the two groups of first conveyor rollers are parallel to each other, and a rectangular baffle is provided between the two groups of first conveyor rollers, which can slide along the conveying direction of the first conveyor rollers, and sliding shafts are provided on the sides of the rectangular baffles near the ends, and slide grooves for sliding cooperation of the corresponding sliding shafts are respectively provided on the turntables.

[0007] Preferably, a lifting drive mechanism is provided on the turntable, which is used to drive the first conveying roller to slide in a direction perpendicular to its own conveying direction; the roller frame of the first conveying roller is slidably arranged on a slide rail fixed on the turntable, and the lifting drive mechanism is a hydraulic cylinder acting on the roller frame of the first conveying roller.

[0008] Preferably, the flip driving mechanism is a driving motor, and the output shaft of the driving motor is drivingly connected to a central shaft arranged at the center position of one of the turntables.

[0009] Preferably, the two turntables are fixedly connected at positions outside the first conveying roller via an arc-shaped reinforcing plate.

[0010] Preferably, linkage gears are rotatably provided on the sliding shafts, and racks for engaging with the corresponding linkage gears are provided on opposite sides of the two sliding grooves on the same turntable;

[0011] Among the two interlocking gears located on the same turntable, one of the interlocking gears passes through the turntable and rotates with an idler gear arranged on the outside of the turntable. The idler gear is rotatably sleeved on a support shaft and fixed concentrically with a first sprocket. The support shaft slides with a guide groove provided on the outside of the turntable. The first sprocket is connected to a second sprocket arranged on a sliding shaft where the other interlocking gear is located via a chain transmission.

[0012] Preferably, the slide groove is arranged throughout the thickness direction of the turntable.

[0013] Preferably, the guide groove is T-shaped or dovetail-shaped.

[0014] A high-efficiency turnover production line for palletizing pre-printed aluminum plates comprises a track, a second conveyor roller slidably arranged on the track, and the above-mentioned high-efficiency turnover device for palletizing pre-printed aluminum plates. The track covers multiple aluminum plate drying production lines in the transverse direction. The second conveyor roller is used to convey the pallets of pre-printed aluminum plates produced by each aluminum plate drying production line to a group of first conveyor rollers located at the bottom of the high-efficiency turnover device.

[0015] Beneficial effects

[0016] The rectangular baffle in the present invention is slidably arranged between the two first conveyor rollers along the conveying direction of the first conveyor roller. After the turntable is rotated 180 degrees to complete the flipping of the pre-printed aluminum plate stack and the rectangular baffle is rotated to the front side of the first conveyor roller, another pre-printed aluminum plate stack can be directly accessed from the front side of the first conveyor roller. In the process of the pre-printed aluminum plate stack being pushed backward by the first conveyor roller, the pre-printed aluminum plate stack itself pushes the rectangular baffle to move backward synchronously until the rectangular baffle moves to the rear end of the slide groove to form a limit block for the pre-printed aluminum plate stack. The turntable can then be rotated 180 degrees again to flip the pre-printed aluminum plate stack. The above process is repeated, which solves the problem that after flipping one pre-printed aluminum plate stack, the turntable needs to be rotated again to reset the rectangular baffle before another pre-printed aluminum plate stack can be accessed by the first conveyor roller, thereby greatly improving the flipping efficiency of the pre-printed aluminum plate stack and adapting to the continuous output of multiple aluminum plate drying production lines.

[0017] In a preferred embodiment of the present invention, the top and bottom of the same side of the rectangular baffle are coordinated by interlocking gears, sprockets and chains to achieve synchronous and synchronised movement along the corresponding slide groove, thereby being able to keep the rectangular baffle always perpendicular to the conveying direction of the first conveyor roller, and avoiding the centre deviation of the rectangular baffle caused by turntable flipping, motor vibration or other factors during operation, causing the baffle to tilt to the conveying direction of the first conveyor roller. As a result, in the process of the pre-printed aluminium plate stack pushing the rectangular baffle to move to the rear side of the first conveyor roller, the top of the tilted rectangular baffle pushes back the upper part of the pre-printed aluminium plate stack, causing it to become skewed. This is beneficial to maintaining the regularity of the appearance of the pre-printed aluminium plate stack after flipping, and avoiding rework and shaping. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of an efficient turnover assembly line for palletizing pre-printed aluminum plates according to Example 1 of the present invention;

[0019] Figure 2-4 for Figure 1 AA cross-sectional structural diagram in the embodiment 1, i.e., a schematic diagram of the state of a high-efficiency turning device for pre-printed aluminum plate stacking during implementation;

[0020] Figure 5 Schematic diagram of the inclined state of the rectangular baffle in Example 1;

[0021] Figure 6 This is a side structural schematic diagram of a high-efficiency turning device in a high-efficiency turning production line for stacking pre-printed aluminum plates according to Example 2 of the present invention;

[0022] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure in the middle BB direction;

[0023] Figure 8 This is a schematic diagram of the front structure of a special mechanism for flipping a pre-printed aluminum plate mentioned in the background technology;

[0024] Figure 9 This is a schematic diagram of the rear structure of a special mechanism for flipping a pre-printed aluminum plate mentioned in the background art;

[0025] Markings in the figure: 1. First conveyor roller, 101. Roller body, 102. Roller frame, 2. Turntable, 3. Aluminum plate drying production line, 4. Track, 5. Second conveyor roller, 6. Turning drive mechanism, 7. Slide chute, 8. Sliding shaft, 9. Rectangular baffle, 10. Pallet, 11. Pre-printed aluminum plate palletizing, 12. Second sprocket, 13. Linkage gear, 14. Rack, 15. Chain, 16. Idle wheel, 17. First sprocket, 18. Support shaft, 19. Guide groove, 20. Connecting plate. DETAILED DESCRIPTION

[0026] The following describes an efficient turning device and turning production line for stacking pre-printed aluminum plates according to the present invention through two embodiments:

[0027] Example 1

[0028] like Figure 1As shown in the figure, an efficient turnover production line for pre-printed aluminum plate stacking in this embodiment includes a track 4, a second conveyor roller 5 slidingly arranged on the track 4, and an efficient turnover device for pre-printed aluminum plate stacking 11. Multiple aluminum plate drying production lines 3 (two are shown in the figure) are distributed longitudinally along the track 4, and the output positions of the pre-printed aluminum plate stacking 11 of all aluminum plate drying production lines 3 are set close to the track 4. Figure 2 As shown, the high-efficiency turning device comprises two vertically arranged turntables 2, positioned opposite each other. Two sets of first conveyor rollers 1 are symmetrically spaced between the turntables 2. Second conveyor rollers 5 receive the pre-printed aluminum sheet stacks 11 produced by each aluminum sheet drying production line 3 and, by coordinating with the first conveyor rollers 1 at the bottom of the high-efficiency turning device, deliver the pre-printed aluminum sheet stacks 11 to the first conveyor rollers 1 at the bottom of the high-efficiency turning device. The turning drive mechanism 6 then drives the turntables 2 to rotate 180°, completing the turning of the pre-printed aluminum sheet stacks 11.

[0029] like Figure 2 As shown, a rectangular baffle 9 is provided between the two groups of first conveyor rollers 1 and at the rear side of the assembly line. The rectangular baffle 9 prevents the pre-printed aluminum plate stack 11 from falling off the rear side of the first conveyor roller 1 during the flipping process. In order to further improve the flipping efficiency, sliding shafts 8 are fixed at the top and bottom positions of the two sides of the rectangular baffle 9 in this embodiment, and corresponding chutes 7 for the sliding shafts 8 to slide with are provided on the turntable 2. The chutes 7 are distributed parallel to the conveying direction of the first conveyor roller 1. Therefore, without driving the rectangular baffle 9 to reset, the high-efficiency flipping device can continuously access the pre-printed aluminum plate stack 11 and continuously perform the flipping operation, thereby improving the flipping efficiency. Specifically:

[0030] In the process of moving the pre-printed aluminum plate stack 11 along the track 4 via the second conveyor roller 5 to the high-efficiency turning mechanism, another return tray 10 is placed on the top of the pre-printed aluminum plate stack 11 until Figure 2 After the second conveyor roller 5 shown is aligned with the first conveyor roller 1 at the bottom of the high-efficiency turnover mechanism, each of the first and second conveyor rollers 1 and 5 is controlled to rotate synchronously and clockwise at a constant speed, feeding the pre-printed aluminum plate stack 11 onto the first conveyor roller 1 at the bottom. After the top first conveyor roller 1 is driven down to press against the top tray 10, the turnover drive mechanism 6 drives the turntable 2 to rotate 180°, completing the turnover of the pre-printed aluminum plate stack 11. At this time, the top first conveyor roller 1 is driven up, and the reversed pre-printed aluminum plate stack 11 can be removed using a forklift, a forklift, or other forklift.

[0031] After the pre-printed aluminum plate stack 11 is taken out, the rectangular baffle 9 is located Figure 3At the position shown, the next pre-printed aluminum plate stack 11 is directly fed into the high-efficiency turning mechanism by the cooperation of the second conveyor roller 5 and the first conveyor roller 1, and the pre-printed aluminum plate stack 11 pushes the rectangular baffle 9 to move to the right until it is as shown. Figure 4 As shown, each sliding shaft 8 moves along its corresponding slide groove 7 to the right end of the slide groove 7, and the right end of the slide groove 7 forms a support and blocking limit for each sliding shaft 8, thereby automatically completing the reset of the rectangular baffle 9, and then the flip drive mechanism 6 drives the turntable 2 to rotate 180° to complete the flipping of the pre-printed aluminum plate stack 11.

[0032] In this embodiment, a central axis is provided at the center of one of the turntables 2, and the above-mentioned flipping drive mechanism 6 is a driving motor. The output shaft of the driving motor is connected to the central axis through a reducer to control the rotation angle of the driving motor to control the turntable 2 to rotate at a specific angle. For the two groups of first conveying rollers 1, a lifting drive mechanism is provided on the turntable 2. The lifting drive mechanism is a hydraulic cylinder. The cylinder body of the hydraulic cylinder is fixed on the turntable 2, and the piston rod is connected to the roller frame 102 of the first conveying roller 1 to achieve the overall lifting and lowering of the first conveying roller 1 by pushing and pulling the roller frame 102 by the piston rod. The above lifting drive mechanism drives the overall lifting and lowering of the first conveying roller 1, which is a conventional technical means in this field, so it is not shown in the accompanying drawings. In order to ensure the overall structural strength of the efficient flipping device, arc-shaped reinforcement plates are respectively provided between the two turntables 2 and on the outer sides of the two first conveying rollers 1, such as Figure 8 and Figure 9 shown.

[0033] Example 2

[0034] In the efficient flipping mechanism of the above-mentioned embodiment 1, in order to prevent the rectangular baffle 9 from getting stuck due to uneven force on the sliding shaft 8 and the sliding groove 7 during the process of the rectangular baffle 9 automatically returning to its original position when the pre-printed aluminum plate stack 11 is pushed by the first conveyor roller 1, it is necessary to set the width of the sliding groove 7 to be slightly larger than the outer diameter of the sliding shaft 8. However, it was found during the implementation that the rectangular baffle 9 is often easily affected by the change in its own center of gravity during the rotation of the turntable 2 or the vibration generated by the drive motor, resulting in the rectangular baffle 9 being in a state of being turned over after a pre-printed aluminum plate stack 11 is turned over. Figure 5 At this time, the second conveyor roller 5 and the first conveyor roller 1 cooperate to feed the pre-printed aluminum plate stack 11 into the first conveyor roller 1. In the process of the first conveyor roller 1 pushing the pre-printed aluminum plate stack 11 to the right and pushing the rectangular baffle 9 to return to the right side of the first conveyor roller 1, the upper part of the inclined rectangular baffle 9 abuts against the upper part of the pre-printed aluminum plate stack 11. The friction between the several pre-printed aluminum plates located on the upper part of the pre-printed aluminum plate stack 11 is small due to the lack of necessary pressure, which makes it easy for them to be skewed due to the pressure from the upper part of the rectangular baffle 9. Further correction is required after flipping, which wastes manpower.

[0035] In order to solve the above technical problems that may exist in Example 1, in this embodiment, the top and bottom of the rectangular baffle 9 are linked to each other so that they are always distributed perpendicular to the conveying direction of the first conveyor roller 1, so that when the pre-printed aluminum plate stack 11 pushes the rectangular baffle 9 to reset, the pre-printed aluminum plate stack 11 and the side of the rectangular baffle 9 are fully in contact, thereby avoiding the reaction force of the rectangular baffle 9 on the pre-printed aluminum plate stack 11 being concentrated on the several pre-printed aluminum plates on the upper part of the pre-printed aluminum plate stack 11, causing the pre-printed aluminum plate stack 11 to be skewed as a whole. Specifically:

[0036] The main structure of this embodiment is the same as that of embodiment 1, and the only difference is the linkage structure of the top and bottom of the rectangular baffle 9 in the efficient flip mechanism of this embodiment: Figure 6 and Figure 7 As shown, in this embodiment, a linkage gear 13 is rotatably mounted on each sliding shaft 8 (rotatably engaged by a rolling bearing, the same applies below). Each chute 7 extends through the turntable 2. Racks 14 are located along the longitudinal direction of the chute 7, extending from the lower edge of the upper chute 7 and the upper edge of the lower chute 7 of the same turntable 2. These racks 14 engage with the corresponding linkage gears 13. The meshing relationship between the linkage gears 13 and the corresponding racks 14 ensures that the rectangle remains perpendicular to the conveying direction of the first conveyor roller 1. Figure 6 、 7 The linkage gear 13 at the bottom is relatively long, and the portion thereof extending from the slide slot 7 is meshed with an idler wheel 16. The idler wheel 16 has a support shaft 18, one end of which is slidably engaged with a guide groove 19 provided on the outside of the turntable 2. The guide groove 19 and the corresponding end portion after support are T-shaped, which ensures flexible sliding while preventing the support shaft 18 and the idler wheel 16 thereon from being separated; the other end of the support shaft 18 is connected to a connecting plate 20 ( Figure 6 The idler wheel 16 is fixed to the bottom sliding shaft 8 (not shown in the figure to avoid obstruction), thereby fixing the support shaft 18 and the bottom sliding shaft 8 via the connecting plate 20, always maintaining the meshing transmission connection between the idler wheel 16 and the bottom linkage gear 13. The idler wheel 16 is also concentrically fixedly connected to the outside of the first sprocket 17. The second sprocket 12 is concentrically fixed to the linkage gear 13 at the top, and the second sprocket 12 is transmission-connected to the first sprocket 17 via the chain 15.

[0037] Based on the difference from the above embodiment 1, in this embodiment, the rectangular baffle 9 is pushed to move by the pre-printed aluminum plate stack 11. Figure 6Take the case where the rectangular baffle 9 is pushed to the right by the pre-printed aluminum plate stack 11 in the state shown as an example: the bottom linkage gear 13 cooperates with the corresponding rack 14 to rotate in the counterclockwise direction, driving the idler wheel 16 and the first sprocket 17 to rotate in the clockwise direction, and the first sprocket 17 drives the second sprocket 12 and the top linkage gear 13 to rotate synchronously in the clockwise direction through the chain 15; and when the top linkage gear 13 rotates in the clockwise direction, it can also drive the bottom linkage gear 13 to rotate in the counterclockwise direction through the second sprocket 12-chain 15-first sprocket 17. This ensures that the top and bottom linkage gears 13 are transferred and rotated in the same reverse direction, so that the upper and lower parts of the rectangular baffle 9 move to the right at the same speed, and thus the rectangular baffle 9 always maintains a distribution perpendicular to the conveying direction of the first conveyor roller 1, avoiding the occurrence of the following Figure 5 The good tilted posture shown here causes the pre-printed aluminum plate stack 11 to be skewed.

Claims

1. An efficient turning device for palletizing pre-printed aluminum sheets, characterized by: The invention comprises two relatively distributed turntables (2), a turning drive mechanism (6) for driving the turntables (2) to rotate, and two groups of first conveying rollers (1) fixed between the two turntables (2), wherein the conveying directions of the two groups of first conveying rollers (1) are parallel to each other, and a rectangular baffle (9) is provided between the two groups of first conveying rollers (1) and can slide along the conveying direction of the first conveying rollers (1), and a sliding shaft (8) is provided at a position near the end of the side of the rectangular baffle (9), and a slide groove (7) for sliding cooperation with the corresponding sliding shaft (8) is provided on the turntable (2); A linkage gear (13) is rotatably provided on each sliding shaft (8), and racks (14) for engaging with the corresponding linkage gear (13) are provided on opposite sides of two slide slots (7) on the same turntable (2); Of the two linkage gears (13) located on the same turntable (2), one linkage gear (13) passes through the turntable (2) and is rotationally coupled with an idler wheel (16) disposed outside the turntable (2); the idler wheel (16) is rotationally sleeved on a support shaft (18) and is concentrically fixed with a first sprocket (17); the support shaft (18) is slidingly coupled with a guide groove (19) provided on the outside of the turntable (2); the first sprocket (17) is connected to a second sprocket (12) disposed on a sliding shaft (8) where the other linkage gear (13) is located, via a chain (15).

2. The high-efficiency turning device for stacking pre-printed aluminum plates according to claim 1, characterized in that: A lifting drive mechanism is provided on the turntable (2), and the lifting drive mechanism is used to drive the first conveying roller (1) to slide along a direction perpendicular to its own conveying direction; the roller frame (102) of the first conveying roller (1) is slidably arranged on a slide rail fixed on the turntable (2), and the lifting drive mechanism is a hydraulic cylinder acting on the roller frame (102) of the first conveying roller (1).

3. The high-efficiency turning device for stacking pre-printed aluminum plates according to claim 1, characterized in that: The turning drive mechanism (6) is a driving motor, and the output shaft of the driving motor is in driving connection with a central shaft arranged at the center position of one of the turntables (2).

4. The high-efficiency turning device for stacking pre-printed aluminum plates according to claim 3, characterized in that: The two turntables (2) are fixedly connected at positions outside the first conveying roller (1) via an arc-shaped reinforcing plate.

5. The high-efficiency turning device for stacking pre-printed aluminum plates according to claim 1, characterized in that: The supporting shaft (18) and the corresponding sliding shaft (8) are connected via a connecting plate (20).

6. The high-efficiency turning device for stacking pre-printed aluminum plates according to claim 1, characterized in that: The slide groove (7) is arranged to pass through the thickness direction of the turntable (2).

7. The high-efficiency turning device for stacking pre-printed aluminum plates according to claim 1, characterized in that: The guide groove (19) is T-shaped or dovetail-shaped.

8. An efficient turnover line for palletizing pre-printed aluminum sheets, characterized by: The invention comprises a track (4), a second conveyor roller (5) slidingly arranged on the track (4), and a high-efficiency turning device for stacking pre-printed aluminum plates as described in any one of claims 1 to 7, wherein the track (4) covers a plurality of aluminum plate drying production lines (3) in the transverse direction, and the second conveyor roller (5) is used to convey the pre-printed aluminum plate stacks (11) produced by each aluminum plate drying production line (3) to a group of first conveyor rollers (1) located at the bottom of the high-efficiency turning device.

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