Palletizing device and palletizing method

Abstract

The present invention provides a palletizing device and a palletizing method, comprising a lifting frame, a clamping mechanism provided on the lifting frame, the lifting frame comprising a longitudinal beam and a transverse beam, the clamping mechanism comprising a guide rod, a movable rod, and a movable cylinder, each movable rod being fixedly connected to a support plate, the support plate being fixedly connected to a magnetic switch, the lower end of the probe rod of the magnetic switch being fixedly connected to a clamping member, one or more of the clamping members being fixedly connected to a positioning cylinder, the lower end of the piston rod of the positioning cylinder being provided with a photoelectric sensor. By providing the positioning cylinder, the position of a pallet or a plate placed on the pallet can be detected from the side, making it less likely to be accidentally triggered by foreign objects, and by providing the positioning cylinder on the probe rod of the magnetic switch, when the photoelectric sensor fails, the plate on the clamping mechanism touches the pallet or the plate placed on the pallet, and the magnetic switch is triggered to control the lifting frame to stop descending, thereby preventing damage to the plate and reducing the production accident rate.

Description

Technical Field

[0001] The present invention relates to a plate production device and method, in particular to a palletizing device and method. Background Art

[0002] In the production of composite panels, palletizing devices are often required to transport the panels. Existing palletizing devices typically utilize a distance sensor installed at the lower end of a clamping mechanism to detect the distance between the clamping mechanism and the pallet or the panels stacked on top of the pallet during stacking, thereby controlling the clamping mechanism's downward stroke. If the distance sensor is accidentally triggered by an object inserted between the clamping mechanism and the pallet, the clamping mechanism can easily loosen the panels mid-air, causing production accidents. Furthermore, if the distance sensor malfunctions, the clamping mechanism will continue to move downward even when it touches the pallet or the panels on it, potentially damaging the panels and causing production accidents. This results in a relatively high production accident rate.

[0003] In addition, existing palletizing devices usually do not have an anti-fall structure. Once the lifting mechanism malfunctions and cannot provide support, the plates and the clamping mechanism used to clamp the plates will fall directly, causing a production accident.

[0004] In view of this, the applicant conducted in-depth research on palletizing devices and palletizing methods, which led to the present case. Summary of the Invention

[0005] The object of the present invention is to provide a palletizing device and a palletizing method with a relatively low production accident rate.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.

[0008] As an improvement of the present invention, the clamping member is a horizontally arranged channel steel bar, and the notch of the channel steel bar faces the longitudinal beam.

[0009] As an improvement of the present invention, each of the support plates is connected to more than two magnetic switches, and the probe rods of the magnetic switches connected to the same support plate are connected to the same clamping member.

[0010] As an improvement of the present invention, a slider is fixedly connected to the support plate, a slide rod is vertically slidably connected to the slider, and the lower end of the slide rod is fixedly connected to the corresponding clamping member.

[0011] Material toggling mechanism, its both ends are connected with the up-down knob.The knobby handle is in the middle of being made up of the groove on the attachment piece, and the tooth on the attachment piece is in the middle of being made up of the tooth on the attachment piece.

[0012] A palletizing method comprises the following steps performed in sequence:

[0013] S1. Conveying: a pallet and the above-mentioned stacking device are arranged next to a conveyor, a plate is placed on the conveyor, and the conveyor is used to transport the plate to a position corresponding to the lifting frame of the stacking device;

[0014] S2, centering, adjusting the position of the plate on the conveyor;

[0015] S3, taking the plate, using the clamping mechanism on the lifting frame to clamp the plate that has completed the centering step from the conveyor and transport it to just above the pallet;

[0016] S4, stacking, controlling the lifting frame to move downward gradually towards the pallet, while the piston rod of the positioning cylinder of the clamping mechanism extends downward;

[0017] When the photoelectric sensor on the piston rod of the positioning cylinder detects the pallet or the plate on the pallet, the piston rod of the positioning cylinder is retracted, and the lifting frame continues to descend a predetermined distance, after which the two moving rods of the clamping mechanism move away from each other, so that the clamping members of the clamping mechanism are separated from the plate; or

[0018] When the magnetic switch of the clamping mechanism is triggered, the lifting frame immediately stops moving downward, and at the same time, the two moving rods of the clamping mechanism move away from each other, so that the clamping members of the clamping mechanism are separated from the plate.

[0019] As an improvement of the present invention, in step S2, after the plate is conveyed to the position corresponding to the lifting frame of the stacking device by the conveyor, the plate is continued to be conveyed forward a predetermined distance, and then the plate is clamped by each clamping member of the clamping mechanism so that the position of the plate on the conveyor is adjusted, and then each clamping member is separated from the plate, and the plate is conveyed backward to the position corresponding to the lifting frame of the stacking device by the conveyor.

[0020] By adopting the above technical solution, the present invention has the following beneficial effects:

[0021] 1. The palletizing device or palletizing method of the present invention can detect the position of the pallet or the plate placed on the pallet from the side by providing a positioning cylinder, and is not easily triggered by foreign objects by mistake. In addition, by providing the positioning cylinder on the probe rod of the magnetic switch, when the photoelectric sensor fails, the plate on the clamping mechanism touches the pallet or the plate placed on the pallet, and the magnetic switch will be triggered to control the lifting frame to stop descending, so that the plate will not be damaged and the production accident rate is relatively low.

[0022] 2. By setting the lifting active rod and the lifting driven rod, the lifting active rod is mainly used to drive the lifting frame to move during normal use. The lifting driven rod and the anti-fall chain rotate under the push of the lifting frame. When the lifting frame falls abnormally, the gear on the lifting driven rod can be used to pull the lifting frame to prevent it from falling, which is not easy to cause safety accidents. Before the abnormality is repaired, the lifting driven rod can be used to drive the lifting frame to perform the lifting action, avoiding downtime and waiting, and not easily affecting the production progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the anti-falling stacking device of the present invention;

[0024] Figure 2 for Figure 1 A partial enlarged view of position A in the middle;

[0025] Figure 3 for Figure 1 A partial enlarged view of position B in the middle.

[0026] The corresponding symbols in the figure are as follows:

[0027] 10- crossbeam; 11- slide seat;

[0028] 12-first longitudinal beam; 13-second longitudinal beam;

[0029] 14-first column; 15-second column;

[0030] 16-lifting active rod; 17-lifting driven rod;

[0031] 18-gear; 19-support frame;

[0032] 20-lifting frame; 21-lifting motor;

[0033] 22-lifting column; 23-rack;

[0034] 24-longitudinal beam; 25-cross bar;

[0035] 26-Reinforcement rod;

[0036] 30-anti-fall chain; 31-driving sprocket;

[0037] 32-driven sprocket; 40-clamping mechanism;

[0038] 41-guide rod; 42-moving rod;

[0039] 43-moving cylinder; 44-support plate;

[0040] 45-magnetic switch; 46-clamping piece;

[0041] 47-slider; 48-slider;

[0042] 50-Traverse motor. DETAILED DESCRIPTION

[0043] The invention will be further described below with reference to specific embodiments:

[0044] like Figure 1-Figure 3 As shown, the palletizing device provided in this embodiment includes two parallel and horizontally arranged beams 10, two slides 11 horizontally slidably connected to each beam 10 one by one, a lifting frame 20 with two ends vertically slidably connected to the two slides 11 one by one, a transverse motor 50 for driving each slide 11 to slide relative to the beam 10, and a lifting motor 21 for driving the lifting frame 20 to slide relative to each slide 11. Of course, a clamping mechanism 40 is provided on the lifting frame 20 to clamp materials such as plates.

[0045] The crossbeam 10 can be directly fixedly connected to the wall of the workshop, or supported by setting a bracket. In this embodiment, the stacking device also includes a first longitudinal beam 12 and a second longitudinal beam 13, which are respectively arranged horizontally and perpendicular to the crossbeam 10. One end of each crossbeam 10 is fixedly connected to the beam body of the first longitudinal beam 12, and the other end is fixedly connected to the beam body of the second longitudinal beam 13 (that is, it is not fixedly connected to the end of the longitudinal beam). Both ends of the first longitudinal beam 12 are fixedly connected to the first column 14, and both ends of the second longitudinal beam 13 are fixedly connected to the second column 15. In this way, the longitudinal beams can be supported by the columns. When the longitudinal beams are used to support the crossbeams, the force on the crossbeams can be dispersed to the four columns, and the force is more uniform.

[0046] Preferably, the spacing between each crossbeam 10 and the first upright post 14 located away from the other crossbeam 10 is the same, and the spacing between each crossbeam 10 and the second upright post 15 located away from the other crossbeam 10 is the same, which helps further improve the stability of the load. In addition, the length of the first longitudinal beam 12 is greater than the length of the second longitudinal beam 13, and the perpendicular midlines of the first and second longitudinal beams 12, 13 coincide with each other. In this way, the four upright posts can be arranged in an isosceles trapezoid (i.e., the four upright posts are arranged in a continuous isosceles trapezoid), leveraging the greater stability of the isosceles trapezoid to further improve support stability.

[0047] During normal use, the anti-fall palletizing device provided in this embodiment utilizes a lifting motor 21 to drive the gear 18 on the active lifting rod 16 to rotate forward or reverse, thereby driving the lifting frame 20 to rise or fall. During this process, the gear 18 on the driven lifting rod 17 rotates under the drive of the corresponding rack 23, with almost no load, and only following the movement. When an abnormality occurs and the gear 18 on the active lifting rod 16 cannot engage with the rack 23, the lifting frame 20 will tend to fall. At this time, due to the presence of the anti-fall chain 30, the driven lifting rod 17 can be used to pull the active lifting rod 16 to prevent the lifting frame 20 from falling. After the abnormality occurs, the anti-fall sprocket 30 can still be used to drive the gear 18 on the driven lifting rod 17 to rotate forward or reverse, thereby driving the lifting frame 20 to rise or fall, so as to complete the processing of all materials in transit on the production line. Of course, since the anti-fall sprocket 30 is in a taut state at this time, it is not advisable to perform the lifting action for a long time.

[0048] The lifting frame 20 includes a horizontally arranged longitudinal beam 24 and crossbars 25 fixedly connected to the upper side of the longitudinal beam 24 and arranged in sequence along the length of the longitudinal beam 24. Each crossbar 25 is arranged perpendicular to the longitudinal beam 24 and is arranged horizontally. The ends of each crossbar 25 are symmetrically arranged with the longitudinal beam 24 as the center. In this way, the crossbars 25 can form a seesaw structure. Even if the fixed connection between the crossbar 25 and the longitudinal beam 24 becomes loose, the plate can still be stably clamped to avoid safety accidents. Of course, if such looseness is discovered during maintenance, it should be promptly reinforced. Preferably, a reinforcement rod 26 is fixedly connected between each two adjacent crossbars 25 to form an I-shaped structure. The reinforcement rod 26 is also fixedly connected to the longitudinal beam 24. This helps to increase the connection area with the longitudinal beam 24 and prevent loosening. It should be noted that each crossbar 25 is connected to only one reinforcement rod 26 , that is, not all crossbars 25 are connected into one through the reinforcement rod 26 . This helps to ensure the independence between two crossbars 25 that are not connected through the reinforcement rod 26 .

[0049] The lifting frame 20 is equipped with two lifting columns 22, each slidably connected to a corresponding slide 11. A vertically arranged rack 23 is fixedly connected to the side wall of each lifting column 22. A driving lifting rod 16 and a driven lifting rod 17 are rotatably connected between the two slides 11. Specifically, the ends of the driving lifting rod 16 and the driven lifting rod 17 are rotatably connected to the corresponding slide 11, with the driven lifting rod 16 located directly above the driving lifting rod 17. Each end of the driving lifting rod 16 and the driven lifting rod 17 is also fixedly connected to a gear 18 that meshes with the corresponding rack 23. Gear 18 is preferably a helical gear, so that the gear can pull the rack 23 to prevent the lifting frame 20 from sliding down. Furthermore, a driving sprocket 31 is fixedly connected to the rod of the driving lifting rod 16, and a driven sprocket 32 ​​that cooperates with the driving sprocket 31 is fixedly connected to the rod of the driven lifting rod 17. A fall prevention chain 30 is wound between the driving sprocket 31 and the driven sprocket 32. Preferably, the driving sprocket and the driven sprocket are both double-row sprockets. Correspondingly, there are two anti-fall chains 30 to match the double-row sprockets.

[0050] A support frame 19 is fixedly connected between the two slides 11, and both the traverse motor 50 and the lift motor 21 are mounted on the support frame 19. The specific transmission connection structure between the traverse motor 50 and the two slides 11 can be a conventional structure, such as a gear drive, chain drive, or belt drive, but is not the focus of this embodiment and will not be described in detail here. The lift motor 21 and the active lift rod 16 are connected to each other via a dual-output reducer.

[0051] The clamping mechanism 40 includes a guide rod 41 fixedly connected to each cross bar 25 and arranged parallel to the corresponding cross bar 25, two moving rods 42 simultaneously slidably connected to each guide rod 41 and arranged parallel to the longitudinal beam 24, and a moving cylinder 43 for driving the moving rod 41 to slide, wherein there are multiple moving cylinders 43, and the cylinder bodies of multiple moving cylinders 43 are all rotatably connected to the longitudinal beam 24 or the reinforcement rod 26 and are all located between the two moving rods 42, wherein the piston rods of some moving cylinders 43 are rotatably connected to one of the moving rods 43, and the piston rods of other moving cylinders 43 are rotatably connected to the other moving rod 43.

[0052] Each movable rod 42 is fixedly connected to a plurality of support plates 44 arranged in sequence along the length of the movable rod 42. A magnetic switch 45 with a probe rod arranged vertically is fixedly connected to the support plates 44. It should be noted that the magnetic switch 45 can be a magnetic switch with a probe rod or a cylinder-type magnetic switch purchased directly from the market. In this embodiment, a magnetic induction switch without a probe rod is purchased from the market and then connected to the cylinder via a bracket or strap to form the magnetic switch 45 in this embodiment. In this case, the piston rod of the cylinder serves as the probe rod. The specific bracket or strap connection method is conventional and will not be described in detail here. The lower end of the probe rod of the magnetic switch 45 is fixedly connected to a clamp 46. One or more of the clamps 46 is fixedly connected to a positioning cylinder (not shown in the figure) with a piston rod arranged vertically on the side away from the longitudinal beam 24. The lower end of the piston rod of the positioning cylinder is provided with a photoelectric sensor (not shown in the figure) with the sensing head horizontally facing the longitudinal beam 24.

[0053] Preferably, in this embodiment, the clamping member 46 is a horizontally arranged channel steel bar, with the notch of the channel steel bar facing the longitudinal beam 24. At the same time, in order to prevent the clamping member 46 from rotating around the probe rod of the magnetic switch 45, more than two magnetic switches 45 can be connected to each support plate 44, and the probe rods of the magnetic switches 45 connected to the same support plate 44 are connected to the same clamping member 46. This embodiment adopts another structure to prevent the clamping member 46 from rotating around the probe rod of the magnetic switch 45. Specifically, in this embodiment, a slider 47 is further fixedly connected to the support plate 44, and a slide rod 48 is vertically slidably connected to the slider 47. The lower end of the slide rod 48 is fixedly connected to the corresponding clamping member 46.

[0054] This embodiment also provides a palletizing method based on the above-mentioned palletizing device, comprising the following steps performed in sequence:

[0055] S1. Transport. Before use, place the pallet and the above-mentioned stacking device next to the conveyor. The conveyor and the pallet are arranged side by side directly below the crossbeam 10. When in use, place the plate on the conveyor, and use the conveyor to transport the plate to the position corresponding to the lifting frame 20 of the stacking device, that is, directly below the crossbeam 10.

[0056] S2. Centering. Adjust the position of the plate on the conveyor. Specifically, after the conveyor is used to transport the plate to the position corresponding to the lifting frame 20 of the stacking device, the plate is continued to be transported forward a predetermined distance (the conveyor transports the plate from its feed end to the stacking device as forward transport, and the reverse transport is backward transport). The specific distance can be determined according to the specifications of the plate, for example, continue to transport it forward 0.5 meters, etc., and then the lifting frame 20 is lowered so that the clamping members 46 of the clamping mechanism 40 are respectively located on both sides of the plate, and the clamping members 46 of the clamping mechanism 40 are used to clamp the plate so that the position of the plate on the conveyor is adjusted, and then the clamping members 46 are separated from the plate, and the conveyor is used to transport the plate backward to the position corresponding to the lifting frame 20 of the stacking device to achieve centering. This centering method does not require a centering mechanism on the conveyor, and does not require correction of the relative position between the stacking device and the centering mechanism when debugging the equipment. The equipment cost is relatively low and it is more convenient to use.

[0057] S3, take the plate, use the clamping mechanism 40 on the lifting frame 20 to clamp the plate that has completed the centering step from the conveyor and transport it to just above the pallet.

[0058] S4: Stacking. The lifting frame 20 is controlled to move downward, gradually approaching the pallet. Simultaneously, the piston rod of the positioning cylinder of the clamping mechanism 40 extends downward. Under normal circumstances, when the photoelectric sensor on the positioning cylinder's piston rod detects the pallet or the sheet material on it, the positioning cylinder's piston rod retracts, and the lifting frame 20 continues to descend a predetermined distance. The specific distance is determined based on the actual conditions, such as the stroke of the positioning cylinder's piston rod and the thickness of the sheet material. It should be noted that this predetermined distance may be zero. The two movable rods 42 of the clamping mechanism 40 then move away from each other, causing the clamping members 46 of the clamping mechanism 40 to disengage from the sheet material, thereby achieving stacking of the sheet materials.

[0059] In the event that the photoelectric sensor fails to function properly or is interfered with, the lifting frame 20 will press the plate against the pallet or the plate on the pallet. When the magnetic switch 45 of the clamping mechanism 40 is triggered (the lifting frame 20 will press the plate against the pallet or the plate on the pallet so that the probe rod of the magnetic switch 45 is forced to retract and the magnetic switch 45 is triggered), the lifting frame 20 will immediately stop moving downward. At the same time, the two moving rods 42 of the clamping mechanism 40 will move away from each other, so that the clamping parts 46 of the clamping mechanism 40 will detach from the plate, thereby achieving stacking of the plates.

[0060] The present invention has been described in detail above with reference to the accompanying drawings, but the embodiments of the present invention are not limited to the above embodiments. Those skilled in the art can make various modifications to the present invention based on the existing technology, such as changing part of the motor to a cylinder, etc., which all fall within the scope of protection of the present invention.

Claims

1. A palletizing device, comprising a lifting frame, characterized in that: Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion. Material toggling mechanism, its both ends are connected with the up-down knob.The knobby handle is connected with the up-down knob on the knobby handle basis. The knobby handle is connected with the up-down knob on the knobby handle basis.

2. The palletizing device according to claim 1, wherein: The clamping member is a horizontally arranged channel steel bar, and the notch of the channel steel bar faces the longitudinal beam.

3. The palletizing device according to claim 1, wherein: Each of the support plates is connected to more than two magnetic switches, and the probe rods of the magnetic switches connected to the same support plate are connected to the same clamping member.

4. The palletizing device according to claim 1, wherein: The support plate is also fixedly connected with a slider, the slider is vertically slidably connected with a slide rod, and the lower end of the slide rod is fixedly connected to the corresponding clamping member.

5. A palletizing method, characterized in that: The method includes the following steps: S1. Conveying: a pallet and a palletizing device according to any one of claims 1 to 4 are provided next to a conveyor, a plate is placed on the conveyor, and the conveyor is used to transport the plate to a position corresponding to a lifting frame of the palletizing device; S2, centering, adjusting the position of the plate on the conveyor; S3, taking the plate, using the clamping mechanism on the lifting frame to clamp the plate that has completed the centering step from the conveyor and transport it to just above the pallet; S4, stacking, controlling the lifting frame to move downward gradually towards the pallet, while the piston rod of the positioning cylinder of the clamping mechanism extends downward; When the photoelectric sensor on the piston rod of the positioning cylinder detects the pallet or the plate on the pallet, the piston rod of the positioning cylinder is retracted, and the lifting frame continues to descend a predetermined distance, after which the two moving rods of the clamping mechanism move away from each other, so that the clamping members of the clamping mechanism are separated from the plate; or When the magnetic switch of the clamping mechanism is triggered, the lifting frame immediately stops moving downward, and at the same time, the two moving rods of the clamping mechanism move away from each other, so that the clamping members of the clamping mechanism are separated from the plate.

6. The palletizing method according to claim 5, wherein: In step S2, after the plate is conveyed to the position corresponding to the lifting frame of the stacking device by the conveyor, the plate is continued to be conveyed forward a predetermined distance, and then the plate is clamped by the clamping members of the clamping mechanism so that the position of the plate on the conveyor is adjusted. Then, the clamping members are separated from the plate, and the plate is conveyed backward to the position corresponding to the lifting frame of the stacking device by the conveyor.

Images