A corrugated cardboard loading device

Abstract

The present invention relates to the technical field of cardboard loading machines, and specifically discloses a corrugated cardboard loading device, which includes a machine base and side plates arranged at both ends of the machine base. A lifting support plate is arranged between the two side plates, and a material grabbing mechanism is arranged above the lifting support plate. One side of the upper end of the side plate is provided with a feeding roller group. The material grabbing mechanism includes a hollow rotating roller rotatably arranged between the two side plates. A plurality of groups of connecting columns are circumferentially and evenly arranged on the outer circumferential surface of the hollow rotating roller. The end of the connecting column is connected with a suction cup through a telescopic tube. The end of the telescopic tube is connected with a movable rod that is hermetically passed through the connecting column and extends into the interior of the hollow rotating roller. A spring is connected between the connecting column and the outer end of the movable rod. The entire corrugated cardboard loading device has a simple and compact structure, low manufacturing cost, and will not occur the situation that the top layer of cardboard is dragged out together with the lower layer of cardboard during the feeding process, and has excellent feeding effect on the corrugated board.

Description

Technical Field

[0001] The invention relates to the technical field of paperboard feeders, and in particular discloses a corrugated paperboard feeder device. Background Art

[0002] During the printing or die-cutting process of corrugated cardboard, it is necessary to feed the corrugated paper into the printing machine or die-cutting machine piece by piece. Traditionally, the feeding of corrugated cardboard printing or die-cutting is done manually. Due to the high labor intensity and low operating efficiency of manual operation, it has been gradually replaced by corresponding cardboard feeding machines. However, due to design defects, the existing cardboard feeding machines are prone to failure to feed or feeding multiple layers of cardboard at the same time, resulting in problems in the subsequent printing or die-cutting process.

[0003] For example, the utility model patent with application number CN2015207991433 discloses an automatic cardboard feeding mechanism, including a frame, a lifting mechanism installed on the frame, the lifting mechanism including a lifting motor installed on the frame, and a screw nut and a screw arranged on the frame; the screw nut is supported on a bearing, and the bearing is installed on the frame through a bearing seat; the screw nut is connected to the lifting motor in a transmission manner; the upper end of the screw is fixed under a lifting platform that can be displaced up and down, and its lower end is a free end. During operation, the automatic cardboard feeding mechanism lifts the stacked cardboard to a certain height through the action of the lifting mechanism, and then needs to cooperate with the corresponding manipulator to grab the top layer of corrugated cardboard, or set a corresponding feeding roller to press on the top layer of corrugated cardboard, and the corrugated cardboard is delivered through the friction between the feeding roller and the cardboard surface during the rotation of the feeding roller. The method of setting a manipulator to grab the corrugated cardboard requires a negative pressure system to adsorb the cardboard, which makes the structure of the entire feeding machine complex and the preparation cost high; and the method of setting a feeding roller is simple in structure, but in the process of the feeding roller using friction to drive the top cardboard to be sent out, there is also a certain friction between the cardboards, which easily causes the top cardboard to drag the bottom cardboard to be sent out during the sending process, and the multi-layer cardboard sent out at the same time is easy to cause the cardboard to be scrapped in the subsequent printing or die-cutting process. Therefore, in view of the above-mentioned shortcomings of the existing corrugated cardboard feeding device, this application proposes a corrugated cardboard feeding device that can effectively solve the above-mentioned technical problems. Summary of the invention

[0004] The present invention aims to provide a corrugated paperboard feeding device to solve the shortcomings of the existing paperboard automatic feeding mechanism when it is used with a robot to grab and feed the paper or with a feeding roller to press and feed the paper.

[0005] The present invention is achieved through the following technical solutions:

[0006] A corrugated cardboard feeding device includes a machine base and side plates arranged at both ends of the machine base. An elevating support plate is arranged between the two side plates. An elevating mechanism for realizing the up and down movement of the elevating support plate is arranged on the side plates. A material grabbing mechanism is arranged above the elevating support plate. One side of the upper end of the side plate is provided with a feeding roller group;

[0007] Among them, the material grabbing mechanism includes a hollow rotating roller rotatably arranged between the two side plates. A plurality of groups of connecting columns are circumferentially and uniformly arranged on the outer circumferential surface of the hollow rotating roller. The end of the connecting column is connected with a suction cup through a telescopic tube. The end of the telescopic tube is connected with a movable rod that seals through the connecting column and extends into the interior of the hollow rotating roller. A spring is connected between the connecting column and the outer end of the movable rod. The inner ends of each group of movable rods are commonly connected with a connecting strip, and a magnetic strip is arranged on the connecting strip. A fixed rod is concentrically arranged in the hollow rotating roller, and the end of the fixed rod extends out of the hollow roller shaft and is fixedly arranged. An electromagnet is arranged on the lower half of the fixed rod facing the feeding roller group, and the polarity of the electromagnet is set to be the same as that of the magnetic strip.

[0008] As a specific setting of the above solution, two sliders are arranged at both ends of the elevating support plate. Guide holes and threaded holes are respectively opened on the two sliders. Two vertical sliding grooves are opened on the side plates. The elevating mechanism includes guide rods and lead screws respectively arranged in the two vertical sliding grooves. The guide rod is matched with the guide hole, and the lead screw is matched with the threaded hole. A lead screw motor connected to the lead screw is also arranged on the machine base.

[0009] As a further setting of the above solution, an infrared emitter and an infrared receiver are respectively arranged on the two side plates, and the infrared emitter and the infrared receiver are arranged on the same horizontal straight line. The infrared receiver and the lead screw motor are both electrically connected to the controller.

[0010] As a specific setting of the above solution, bearing seats are arranged at the tops of the two side plates. The driving roller shafts and the hollow roller shafts at both ends of the hollow rotating roller are connected with the two bearing seats.

[0011] As a specific setting of the above solution, a driven belt pulley is arranged on the driving roller shaft. A driving motor is arranged on the side plate. A driving belt pulley is connected to the motor shaft of the driving motor. A transmission belt is arranged between the driving belt pulley and the driven belt pulley.

[0012] As a specific setting of the above solution, each group of connecting columns is arranged at intervals along the axial direction of the hollow rotating roller.

[0013] As a further setting of the above solution, a belt conveying seat is connected to the machine base on the side far from the feeding roller group. A plurality of conveying belts are arranged at intervals on the belt conveying seat, and support blocks are arranged between adjacent two conveying belts.

[0014] As a further setting of the above solution, a plurality of insertion plates are connected to the side end of the lifting support plate, and the insertion plates extend into the gap between two adjacent conveyor belts when moving downward with the lifting support plate.

[0015] The corrugated cardboard feeding device designed by the present invention always keeps the stacked cardboard at the horizontal height that can be completely adsorbed by the suction plate through the lifting support plate, and then through the rotation of the upper hollow roller, when a set of blanking plates rotates to the lowest position, an electric current is passed into the electromagnet, and then the movable rod is instantaneously pushed downward by the repulsive force between the same-sex of the electromagnet and the magnetic strip. During the downward pushing of the movable rod, the suction plate is attached to the upper surface of the uppermost corrugated paper. And because the telescopic tube is stretched, a negative pressure is formed inside, which has a strong adsorption force on the cardboard. Then, with the rotation of the hollow roller, the uppermost cardboard is separated from the cardboard below. After rotating a certain angle, the adsorption force is withdrawn. At this time, the cardboard falls on the feeding roller group and is sent into a printing machine or a die-cutting machine for subsequent processing under the action of the feeding roller group.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] When the corrugated cardboard feeding device disclosed by the present invention grabs the uppermost corrugated paper, a set of suction plates are located directly above the corrugated paper by using the rotation of the hollow roller, and then the suction plate and the telescopic tube are pushed downward by the acting force between the electromagnet and the magnetic strip. During the process of attaching the suction plate to the upper surface of the cardboard, the adsorption of the corrugated paper is realized by the sudden decrease in the internal pressure of the telescopic tube. After adsorption, the cardboard is separated from the cardboard below during the rotation of the hollow roller, and then is conveyed by the feeding roller group. The entire grabbing mechanism realizes the grabbing of the cardboard, the separation between the cardboard and the cardboard, and the conveying of the grabbed cardboard without the need to be equipped with a negative pressure system; the entire corrugated cardboard feeding device has a simple and compact structure, low manufacturing cost, and will not occur the situation that the uppermost cardboard drags the lower cardboard out during the feeding process, and has an excellent feeding effect on the corrugated board. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the first angle of the present invention;

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the second angle of the present invention;

[0021] Figure 3 Schematic diagram of the three-dimensional structures of the machine base, side plates, fixing rods, etc. in the present invention;

[0022] Figure 4 Schematic diagram of the three-dimensional structures of the lifting support plate and slider in the present invention;

[0023] Figure 5 Schematic diagram of the three-dimensional structure of the material grasping mechanism in the present invention;

[0024] Figure 6 Schematic diagram of the side view internal planar structure of the hollow rotating roller in the present invention;

[0025] Figure 7 Schematic diagram of the planar structures of the suction tray, telescopic pipe, connecting bar, etc. in the present invention;

[0026] Figure 8 Schematic sectional view of the three-dimensional structure of the suction tray, telescopic pipe, etc. in the present invention. Detailed implementation manners

[0027] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0028] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the attached Figures 1 to 8 drawings and describe this application in detail in conjunction with the embodiments.

[0029] Embodiment 1

[0030] Embodiment 1 discloses a corrugated cardboard feeding device. Referring to the attached Figure 1 drawings and the attached Figure 2 drawings, the main body of this feeding device includes a machine base 1, a lifting support plate 2, a material grasping mechanism 3, and a delivery roller group 4.

[0031] Referring to the attached Figure 3 drawings, at both ends of the machine base 1, there are fixedly connected vertical side plates 101 extending upward, and on one side of the upper ends of the two side plates 101, there is a horizontally extending roller support plate 102, and the delivery roller group 4 is rotatably connected between the two roller support plates 102. The delivery roller group 4 includes a plurality of roller bodies arranged side by side and a drive box, and the drive box is connected to a power unit to realize the synchronous rotation of the plurality of roller bodies. This delivery roller group can convey the corrugated cardboard placed above through the transmission of a row of roller bodies.

[0032] Meanwhile, two vertical chutes 103 are formed on the inner side surface of each side plate 101. A vertical guide rod 104 is connected in one of the vertical chutes 103, and a vertical lead screw 105 is arranged in the other vertical chute 103. A lead screw motor 106 for driving the rotation of the vertical lead screw 105 is provided at the lower end of the machine base 1.

[0033] Reference appendix Figure 1 and appendix Figure 4 As shown in the figure and appendix, the lifting support plate 2 is arranged between the two side plates 101. Two sliders 201 are connected to both ends of the lifting support plate 2, and the two sliders 201 are respectively arranged in the corresponding vertical chutes 103. A guiding hole matching the vertical guide rod 104 is formed in one of the sliders 201, and a threaded hole matching the vertical lead screw 105 is formed in the other slider 201. The stacked multi-layer cardboard is placed on the upper surface of the lifting support plate 2. By controlling the rotation of the lead screw motor 106, the lifting support plate 2 is stably lifted upward under the transmission of the lead screw motor 106 and the threaded hole.

[0034] In addition, in order to ensure that the upper end of the cardboard on the lifting support plate 2 always remains at a fixed height, an infrared emitter 5 and an infrared receiver 500 are respectively arranged on the two side edges 101, and the two are arranged on the same horizontal straight line. When the topmost cardboard rises to the horizontal position of the infrared emitter 5 and the infrared receiver 500, the receiving end of the infrared receiver 500 is blocked. At this time, a signal is transmitted to the controller 6, and the lead screw motor 106 is turned off through the control instruction of the controller 6.

[0035] Reference appendix Figure 3 、appendix Figure 5 and appendix Figure 6 As shown in the figure, appendix and appendix, the material grabbing mechanism 3 includes a hollow rotating roller 301 arranged above the lifting support plate 2. A driving roller shaft 302 and a hollow roller shaft 303 are respectively connected to both ends of the hollow rotating roller 301. Then, a bearing seat 304 is fixedly arranged at the top end of each of the two side plates 101, and the driving roller shaft 302 and the hollow roller shaft 303 are respectively rotatably connected in the corresponding bearing seats 304. A material grabbing driving device 305 is arranged on the outer side surface of the side plate 101, and the material grabbing driving device 305 is connected to the driving roller shaft 302. Specifically, the material grabbing driving device 305 includes a driving motor 3051 fixedly arranged on the side plate 101. A driving belt pulley is connected to the motor shaft of the driving motor 3051. A driven belt pulley 3052 is connected to the outer end of the driving roller shaft 302, and a transmission belt 3053 is arranged between the driving belt pulley and the driven belt pulley 3052. Through the power input of the driving motor 3051 and the transmission effect of the transmission belt 3053, the hollow rotating roller 301 can rotate between the two bearing seats 304.

[0036] Then, a fixed rod 306 is concentrically arranged in the inner cavity of the hollow rotating roller 301. One end face of the fixed rod 306 is connected to a connecting rod 307 extending from the hollow roller shaft 303, and the end of the connecting rod 307 is connected to a fixed seat 308 on the side plate 101. A plurality of electromagnets 309 are arranged on the lower half of the fixed rod 306 facing the feeding roller group 4, and the plurality of electromagnets 309 are arranged at intervals along the axial direction of the fixed rod 306.

[0037] Reference attached Figure 7 and attached Figure 8 Referring to the attached drawings, a plurality of sets of connecting columns 310 are annularly arrayed and connected on the outer circumferential surface of the hollow rotating roller 301, and each set of connecting columns 310 is arranged at intervals along the axial direction of the hollow rotating roller 301. In this embodiment, three sets of connecting columns 310 are provided, and the number of each set of connecting columns 310 is set to five. A telescopic tube 311 is connected to the outer end of each connecting column 310, and a suction tray 312 is connected to the end of the telescopic tube 311. At the same time, a radially arranged movable rod 313 is hermetically inserted into the connecting column 310, and a connecting body 314 connected to the lower end of the telescopic tube 311 is connected to the outer end of the movable rod 313. A spring 315 is sleeved on the movable rod 313, and both ends of the spring 315 are respectively connected to the connecting body 314 and the connecting column 310. Then, one end of a set of movable rods 313 extending into the inner cavity of the hollow of the hollow rotating roller 301 is commonly connected to a connecting strip 316, and a magnetic strip 317 is arranged on the side surface of the connecting strip 316 facing the center of the hollow rotating roller 301.

[0038] During the operation of the corrugated cardboard loading device disclosed in Embodiment 1 of the present invention, the lifting support plate 2 is stably lifted between the two side plates 101 under the driving action of the lead screw motor 106. At the same time, the operation of the lead screw motor 106 is controlled by the infrared emitter 5, the infrared receiver 500 and the controller 6, so as to ensure that the uppermost corrugated cardboard is always at the set height.

[0039] When the corrugated cardboard is lifted to the set height, the hollow rotating roller 301 is driven to rotate 120° by the action of the material grasping driving device 306. And when a set of suction trays 312 on the hollow rotating roller 301 are at the lowermost end, current is passed into the electromagnets 309, so that a magnetic field same as the outer surface of the magnetic strip 317 is generated on the outer surface of the electromagnets 309. Under the action of the repulsion between like poles of the magnets, the connecting strip 316 and the movable rod 313 are pushed downward, and then the suction tray 312 is pushed downward by the movable rod 313 to be attached to the upper surface of the uppermost cardboard, and the telescopic tube 311 is stretched from the shortest state to the longest state. At this time, the negative pressure action in the telescopic tube 311 and the suction tray 312 can adsorb and grasp the corrugated cardboard.

[0040] When the corrugated board is adsorbed and grabbed and rotates a certain angle with the hollow roller 301, the topmost corrugated board is separated from the lower cardboard. After the hollow roller 301 rotates a certain angle, the current applied to the electromagnet 309 is turned off. Then, under the action of the spring 315, the entire suction plate 312, the telescopic tube 311, etc. are reset. Along with the disappearance of the negative pressure state, the suction plate 312 releases the grabbed corrugated board, causing the end of the corrugated board to fall on the delivery roller group 4, and then being sent to the printing machine or die-cutting machine under the action of the delivery roller group 4.

[0041] Embodiment 2

[0042] Embodiment 2 discloses a feeding device that is improved on the basis of Embodiment 1 and realizes automatic pushing of the corrugated board stack. The same parts of this Embodiment 2 and Embodiment 1 will not be described again. The differences can be referred to in the attached Figure 1 and the attached Figure 2 .

[0043] At the lower end of the machine base 1 on the side far from the delivery roller group 4 in this Embodiment 2, a belt conveyor seat 7 is connected. A plurality of conveyor belts 701 arranged side by side are provided in the belt conveyor seat 7, and a belt motor 702 for driving all the conveyor belts 701 to rotate synchronously is provided at one end of the belt conveyor seat 7. Support blocks 703 are provided in the belt conveyor seat 7 between every two adjacent conveyor belts 701, and the upper end of the support block 703 is slightly lower than the upper end of the conveyor belt 701 and is set as a smooth surface.

[0044] Referring to the attached Figure 4 , in this Embodiment 2, a plurality of insertion plates 202 are connected at intervals to the side end of the lifting pallet 2 close to the belt conveyor seat 7, and each insertion plate 202 can extend into the gap between two adjacent conveyor belts 701.

[0045] After all the corrugated boards on the lifting pallet 2 are sent out, the lifting pallet 2 is pushed downward by the reverse rotation of the lead screw motor 106 to be parallel to the upper surface of the conveyor belt 701. At this time, the insertion plates 202 also extend into the two adjacent conveyor belts 701. Then, through the input action of the belt motor 702, another stack of cardboard stacked on the conveyor belt 701 is conveyed onto the lifting pallet 2 for feeding.

[0046] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A corrugated cardboard loading device, comprising a machine base and side plates arranged at both ends of the machine base. There is a lifting support plate arranged between the two side plates, and a lifting mechanism for realizing the up and down movement of the lifting support plate is arranged on the side plates. It is characterized in that, A material grabbing mechanism is arranged above the lifting support plate, and a feeding roller group is arranged on one side of the upper end of the side plate; Among them, the material grabbing mechanism includes a hollow rotating roller rotatably arranged between two side plates. A plurality of groups of connecting columns are circumferentially and evenly arranged on the outer circumferential surface of the hollow rotating roller. The end of the connecting column is connected with a suction cup through a telescopic tube. The end of the telescopic tube is connected with a movable rod that is hermetically passed through the connecting column and extends into the interior of the hollow rotating roller. A spring is connected between the connecting column and the outer end of the movable rod. The inner ends of each group of movable rods are jointly connected with a connecting strip, and a magnetic strip is arranged on the connecting strip. A fixed rod is concentrically arranged in the hollow rotating roller, and the end of the fixed rod extends out of the hollow roller shaft and is fixedly arranged. An electromagnet is arranged on the lower half of the fixed rod facing the feeding roller group, and the polarity of the electromagnet is set to be the same as that of the magnetic strip.

2. The corrugated cardboard loading device according to claim 1, characterized in that, Two sliders are arranged at both ends of the lifting support plate. Guide holes and threaded holes are respectively formed in the two sliders. Two vertical sliding grooves are formed in the side plate. The lifting mechanism includes a guide rod and a lead screw respectively arranged in the two vertical sliding grooves. The guide rod is matched with the guide hole, and the lead screw is matched with the threaded hole. A lead screw motor connected to the lead screw is also arranged on the machine base.

3. The corrugated cardboard loading device according to claim 2, characterized in that, An infrared emitter and an infrared receiver are respectively arranged on the two side plates, and the infrared emitter and the infrared receiver are arranged on the same horizontal straight line. The infrared receiver and the lead screw motor are both electrically connected to the controller.

4. The corrugated cardboard loading device according to claim 1, characterized in that, Bearing seats are arranged at the tops of the two side plates. The driving roller shafts and the hollow roller shafts at both ends of the hollow rotating roller are connected to the two bearing seats.

5. The corrugated cardboard loading device according to claim 4, characterized in that, A driven belt pulley is arranged on the driving roller shaft. A driving motor is arranged on the side plate. A driving belt pulley is connected to the motor shaft of the driving motor. A transmission belt is arranged between the driving belt pulley and the driven belt pulley.

6. The corrugated cardboard loading device according to claim 1, characterized in that, Each group of connecting columns is arranged at intervals along the axial direction of the hollow rotating roller.

7. The corrugated cardboard loading device according to claim 1, characterized in that, A belt conveyor seat is connected to the machine base on the side away from the feeding roller group. A plurality of conveyor belts are arranged at intervals in the belt conveyor seat, and a support block is arranged between two adjacent conveyor belts.

8. The corrugated cardboard loading device according to claim 7, characterized in that, A plurality of insertion plates are connected to the side end of the lifting support plate, and the insertion plates extend into the gaps between two adjacent conveyor belts when moving downward along with the lifting support plate.

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