Continuous corrugated paper feeding and conveying device without damaging strength of paperboard

Abstract

The utility model relates to the technical field of corrugated paper printing equipment, in particular to a continuous corrugated paper feeding and conveying device which does not damage the strength of a paperboard and comprises a rack, a paper feeding platform arranged on the rack and used for containing the paperboard, and a front edge air box paper feeding mechanism arranged in a base and used for conveying the paperboard. The front edge air bellow paper feeding mechanism is of a swing type lifting structure, and a lifting assembly is connected between the front edge air bellow paper feeding mechanism and the machine frame in a transmission mode. A paperboard limiting mechanism is arranged above the tail part of the front edge air box paper feeding mechanism; the paperboard limiting mechanism is fixedly connected to the rack, a linkage assembly is connected between the paperboard limiting mechanism and the front edge air box paper feeding mechanism, and the linkage assembly is in transmission connection with the lifting assembly. According to the paper feeding device, the problem that a traditional paper feeding device can not make corresponding height adjustment according to the thickness of corrugated paper is effectively solved, the paper feeding speed can be greatly increased, meanwhile, the strength of paperboards can be kept, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to corrugated paper printing equipment technical field especially a kind of corrugated paper continuous paper feeding conveyor without destroying paperboard strength. BACKGROUND

[0002] The carton printing machine is the printing equipment that can print the text, pattern and other information required to the surface of carton body, and it generally includes plate mounting, ink coating, impression, paper feeding and other process flows. The carton printing machine first makes the text and image to be printed into printing plate when working, and is mounted on the printing machine, then the printing machine uniformly applies ink to the place with text and image on the printing plate, and then directly or indirectly transfers to corrugated paperboard or carton, so as to copy the same printing copy as the printing plate. In the carton printing process, the paperboard conveying mechanism is needed to send the carton or paperboard into the printing machine.

[0003] At present, the Chinese patent with publication number CN109760420B discloses a corrugated paper front edge paper feeding digital inkjet all-in-one machine, which comprises a rack, a front edge bellows paper feeding device mounted on the rack, the front edge bellows paper feeding device comprising a front edge suction fan, a front edge paper feeding bellows, a paper pressing positioning mechanism, a driving flower roller and a driven flower roller, an adsorption bellows paper outlet device mounted at the rear end of the front edge bellows paper feeding device, the adsorption bellows paper outlet device comprising a main platform bellows, a main platform fan, a belt driving light roller, an adsorption belt, a belt light roller, a paper pressing rubber roller and a driving mechanism, and an inkjet printing device mounted above the adsorption bellows paper outlet device. The corrugated paper front edge paper feeding digital inkjet all-in-one machine adopts the structure of front edge bellows paper feeding and adsorption bellows paper outlet after printing, so that the paper surface is flat and the stress is uniform during paper feeding, printing and paper outlet, and the quality of inkjet printing is improved.

[0004] However, when conveying corrugated paperboards of different thicknesses, the paper feeding device cannot make corresponding height adjustment according to the thickness of the corrugated paperboard, so that there is a height difference between the printing device and the paper feeding device and a certain slope is formed, which further leads to the need for climbing after feeding the corrugated paperboard, which not only affects the speed and stability of continuous paper feeding, but also damages the strength of the paperboard. UTILITY MODEL CONTENT

[0005] In order to solve the technical defects proposed in the above background art, the purpose of the utility model is to provide a corrugated paper continuous paper feeding conveyor without damaging the strength of the paperboard, which can greatly improve the paper feeding speed, effectively overcome the problem that the traditional paper feeding device cannot make corresponding height adjustment according to the thickness of the corrugated paper, and at the same time, can maintain the strength of the paperboard and improve the production efficiency.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The application discloses a continuous paper feeding conveying device for corrugated paper without damaging the strength of the paperboard, which comprises a rack, a paper feeding platform arranged on the rack and used for containing the paperboard, a front edge bellows feeding mechanism arranged in the base and used for conveying the paperboard, the front edge bellows feeding mechanism is of a swing lifting structure, and a lifting lifting assembly is in transmission connection between the front edge bellows feeding mechanism and the rack; a paperboard limiting mechanism is arranged above the tail of the front edge bellows feeding mechanism; the paperboard limiting mechanism is fixedly connected to the rack, and a linkage assembly is connected between the paperboard limiting mechanism and the front edge bellows feeding mechanism, and the linkage assembly is in transmission connection with the lifting lifting assembly; under the action of the linkage assembly, the front edge bellows feeding mechanism is driven to move upward or downward by the lifting lifting assembly.

[0008] Preferably, the lifting lifting assembly comprises a bellows lifting base, a nut mounting seat, a lifting sliding rail assembly and a swing connecting rod, the bellows lifting base is arranged in the rack, the nut mounting seat is fixed to the top end of the bellows lifting base, a lifting transmission screw rod is arranged on the nut mounting seat, the top end of the lifting transmission screw rod is in abutment with the front edge feeding bellows mechanism, the lifting sliding rail assembly is composed of a lifting sliding rail and a linear sliding block, the lifting sliding rail is vertically arranged on the inner side wall of the rack, the linear sliding block is slidably connected to the lifting sliding rail, and one end of the linear sliding block is fixedly connected to the side wall of the front edge feeding bellows mechanism, and the swing connecting rod is rotatably connected to the back of the front edge feeding bellows mechanism, and the two ends of the swing connecting rod are in transmission connection with the linkage assembly.

[0009] Preferably, the linkage assembly comprises a variable speed over bridge gear set, a transmission belt and a driving motor, a plurality of variable speed over bridge gear sets are arranged, one end of each of the variable speed over bridge gear sets is connected to the paperboard limiting mechanism and the front edge bellows feeding mechanism respectively, and the variable speed over bridge gear sets are in meshing connection with each other, the transmission belt is sleeved between the variable speed over bridge gear sets and the swing connecting rod, and the output end of the driving motor is in transmission connection with one of the variable speed over bridge gear sets, so that the front edge bellows feeding mechanism and the paperboard limiting mechanism are synchronously driven through the linkage assembly.

[0010] Preferably, the front edge bellows feeding mechanism comprises a front edge feeding bellows, a front edge suction fan arranged at the bottom end of the front edge feeding bellows and a plurality of groups of paper feeding cams rotatably connected in the front edge feeding bellows, the two ends of the front edge feeding bellows are slidably connected to the rack through the lifting sliding rail assembly, the front edge feeding bellows has a negative pressure cavity in the inside, an openable and closable cover plate is arranged at the upper end of the negative pressure cavity, a plurality of evenly arranged rectangular air inlets are formed in the cover plate, the paper feeding cams are arranged in the air inlets and rotatably connected through a paper feeding shaft, the paper feeding shaft is parallelly arranged in the negative pressure cavity, and the two ends of the paper feeding shaft are in transmission connection with servo motors, and the front edge suction fan is in communication with the front edge feeding bellows through a pipeline.

[0011] Preferably, a plurality of guide rollers are arranged between the front edge paper feeding air bellow and the paper feeding platform, the guide rollers are arranged along the length direction of the front edge paper feeding air bellow, and the two ends of the guide rollers are connected with fixing bases which are fixedly connected to one side of the front edge paper feeding air bellow.

[0012] Preferably, a plurality of paper feeding guide rollers are arranged in the paper feeding platform, the paper feeding guide rollers are equidistantly and parallelly arranged, and a paper board pushing assembly is slidably connected to the top of the paper feeding platform.

[0013] Preferably, the paper board pushing assembly comprises a cross beam arranged along the length direction of the paper feeding platform, and a paper pushing rod movably connected to the cross beam, the two ends of the cross beam are slidably connected to the paper feeding platform through the nut bases, and the two ends of the paper pushing rod are hingedly connected to the top end of the cross beam through the hinge pieces.

[0014] Preferably, the paper board limiting mechanism comprises a transverse moving slide table, a paper blocking board frame slidably connected to the transverse moving slide table, and a driving assembly for driving the paper blocking board frame to slide along the horizontal direction of the transverse moving slide table, the transverse moving slide table penetrates through the top of the frame along the X direction of the frame, and a cleaning assembly is arranged on the back side of the transverse moving slide table; the paper blocking board frame is arranged in the middle of the transverse moving slide table, and the paper blocking board frame comprises a left paper blocking board, a right paper blocking board and a middle paper blocking board, the left paper blocking board and the right paper blocking board are arranged on the two sides of the middle paper blocking board respectively, and the left paper blocking board and the right paper blocking board are independently slidably connected to the transverse moving slide table.

[0015] Preferably, the driving assembly comprises a left blocking plate adjusting motor, a right blocking plate adjusting motor and a paper hitting cylinder, the left blocking plate adjusting motor, the right blocking plate adjusting motor and the paper hitting cylinder independently drive the positions of the left paper blocking board, the right paper blocking board and the middle paper blocking board on the transverse moving slide table, so that the positions of the left paper blocking board, the right paper blocking board and the middle paper blocking board are limited according to the paper boards with different widths.

[0016] Preferably, the cleaning assembly comprises a dust collecting box and a roller brush arranged in the dust collecting box, one side of the dust collecting box is provided with a linear slide rail which is slidably connected with the transverse moving slide table, and the two ends of the roller brush are provided with brush switches which are electrically connected with the roller brush.

[0017] In summary, the paper feeding device has the following advantages:

[0018] The utility model discloses a lifting lifting subassembly is set up to adjust the position of paperboard on the front edge wind box, makes the front edge wind box paper feeding mechanism can make height adjustment according to the paperboard of different thickness, and utilizes linkage subassembly synchronous control lifting lifting subassembly drives the front edge wind box paper feeding mechanism to go up or descend movement, thereby guaranteeing that paperboard is conveyed on the front edge wind box paper feeding mechanism and always keeps the same level height with printing device, and then effectively solve the problem that the strength of corrugated paper is destroyed when feeding, can also improve paper feeding speed greatly, thereby improving production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the side view of corrugated paper continuous paper feeding conveying device of the utility model not destroying paperboard strength;

[0020] Figure 2 It is the explosion drawing of corrugated paper continuous paper feeding conveying device of the utility model not destroying paperboard strength;

[0021] Figure 3 It is the structure schematic view of front edge wind box paper feeding mechanism and lifting lifting subassembly in the utility model;

[0022] Figure 4 It is the structure schematic view of paperboard limiting mechanism and cleaning subassembly in the utility model.

[0023] The reference numerals in the drawing are explained as follows:

[0024] 1, rack;2, paper feeding platform;21, paper feeding guide roller;22, paperboard push assembly;221, crossbeam frame;222, paper push rod;3, front edge wind box paper feeding mechanism;31, front edge paper feeding wind box;32, front edge adsorption fan;33, paper feeding cam;34, cover plate;341, air port;35, servo motor;36, guide roller;361, fixed seat;4, lifting lifting subassembly;41, wind box lifting frame base;42, nut mounting seat;43, lifting transmission screw;44, lifting slide rail assembly;45, swing connecting rod;5, paperboard limiting mechanism;51, transverse movement sliding table;52, paper blocking frame;521, left paper blocking plate;522, right paper blocking plate;523, middle paper blocking plate;53, drive assembly;531, left blocking plate adjusting motor;532, right blocking plate adjusting motor;533, paper beating cylinder;6, linkage subassembly;61, variable speed overbridge gear set;62, transmission belt;63, drive motor;7, cleaning subassembly;71, dust collecting box;72, roller brush;73, brush switch. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0026] Those skilled in the art should understand that, in the disclosure of the present application, the orientations or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated thereby must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation on the present application.

[0027] In the description of the present application, if there is a word such as "several" or the like, the meaning is one or more, the meaning of more is two or more, greater than, less than, more than, etc. are not included in the number, above, below, within, etc. are understood to include the number. If the first, second, third is described, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0028] The following will be described in detail with reference to the drawings of the embodiments of the present application. Figures 1-4 The embodiments of the present application will be further described in detail.

[0029] A continuous paper feeding and conveying device for corrugated paper without damaging the strength of paperboard, as shown in Figure 1 , 2 The device comprises a rack 1, a paper feeding platform 2 arranged on the rack 1 for containing paperboard, and a front edge bellows paper feeding mechanism 3 arranged in the base for conveying paperboard, the front edge bellows paper feeding mechanism 3 is a swing lifting structure, and a lifting lifting assembly 4 is transmissionally connected between the front edge bellows paper feeding mechanism 3 and the rack 1; a paperboard limiting mechanism 5 is arranged above the tail of the front edge bellows paper feeding mechanism 3; the paperboard limiting mechanism 5 is fixedly connected to the rack 1, and a linkage assembly 6 is connected between the paperboard limiting mechanism 5 and the front edge bellows paper feeding mechanism 3, the linkage assembly 6 is transmissionally connected with the lifting lifting assembly 4; under the action of the linkage assembly 6, the front edge bellows paper feeding mechanism 3 is driven to ascend or descend by the lifting lifting assembly 4.

[0030] Specifically, the front edge paper feeding is to block by a paper blocking plate, and then the paper boards enter from the gap below the paper blocking plate one by one. However, the gap of the paper blocking plate is generally greater than the thickness of a paper board, so if the lowermost paper board moves, it may drive the second paper board to move, and the second paper board may collide with the paper blocking plate, which may cause the surface to spread out. In addition, the paper board is generally fluffy, so if it directly enters the die cutting or printing machine, the surface may be uneven after processing. Therefore, the lifting assembly 4 is arranged at the bottom end of the front edge paper feeding air box 31 mechanism in the utility model, the lifting assembly 4 includes an air box lifting frame base 41, a nut mounting seat 42, a lifting slide rail assembly 44 and a swing connecting rod 45, the air box lifting frame base 41 is installed in the rack 1; the nut mounting seat 42 is fixed to the top end of the air box lifting frame base 41, and the nut mounting seat 42 is provided with a lifting transmission lead screw 43, the top end of the lifting transmission lead screw 43 abuts against the front edge paper feeding air box 31 mechanism; the lifting slide rail assembly 44 is composed of a lifting slide rail and a linear slide block, the lifting slide rail is vertically arranged on the inner side wall of the rack 1, the linear slide block is slidably connected to the lifting slide rail, and one end of the linear slide block is fixedly connected to the side wall of the front edge paper feeding air box 31 mechanism; the swing connecting rod 45 is rotatably connected to the back of the front edge paper feeding air box 31 mechanism, and the two ends of the swing connecting rod 45 are drivingly connected to the linkage assembly 6. When the paper board is conveyed, the linkage assembly 6 synchronously drives the lifting assembly 4 to move, so that the front edge paper feeding air box 31 mechanism can be driven to ascend or descend along the rack 1, and the gap problem can be solved when conveying paper boards of different thicknesses, so that the paper board can be smoothly conveyed to the inkjet device for printing, and the conveying speed during continuous paper feeding is effectively improved.

[0031] In the embodiment, as shown in Figure 1 The linkage assembly 6 includes a variable speed over bridge gear set 61, a transmission belt 62 and a driving motor 63, the variable speed over bridge gear set 61 is provided with a plurality of variable speed over bridge gear sets 61, the plurality of variable speed over bridge gear sets 61 are respectively connected to one end of the paper board limiting mechanism 5 and the front edge air box paper feeding mechanism 3, and the variable speed over bridge gear sets 61 are connected in meshing mode; the transmission belt 62 is sleeved between the variable speed over bridge gear set 61 and the swing connecting rod 45; the output end of the driving motor 63 is drivingly connected to one of the variable speed over bridge gear sets 61, and the front edge air box paper feeding mechanism 3 and the paper board limiting mechanism 5 are synchronously driven by the linkage assembly 6.

[0032] Specifically, the printed paperboard is stacked on the paper feeding platform 2, when the lifting lifting assembly 4 detects that the printing machine paper feeding instruction signal and the printing roller cycle signal are synchronous, the swing connecting rod 45 drives the front edge paper feeding air box 31 to move downward through the swing cylinder and the variable speed over-bridge gear set 61, when the paperboard at the bottom layer is in contact with the paper feeding cam 33, the servo motor 35 drives the paper feeding cam 33 to start rotating through the driving paper feeding shaft, and the paperboard at the bottom layer is fed out; wherein the variable speed over-bridge gear set includes an over-bridge gear, a variable speed gear and a transmission gear, each gear is arranged in sequence from top to bottom, and the over-bridge gear at the top is in transmission connection with the driving motor 63, the variable speed gear at the middle position is in transmission connection with the front edge air box paper feeding mechanism 3 and the paperboard limiting mechanism 5 respectively, and the transmission gear at the lowest end is in transmission connection with an oil pump, so that multi-connection can be realized in the transmission process.

[0033] In the embodiment, the front edge air box paper feeding mechanism 3 includes a front edge paper feeding air box 31, a front edge suction fan 32 arranged at the bottom end of the front edge paper feeding air box 31, and a plurality of paper feeding cams 33 rotationally connected in the front edge paper feeding air box 31. The two ends of the front edge paper feeding air box 31 are slidably connected to the rack 1 through the lifting slide rail assembly 44, and the inside of the front edge paper feeding air box 31 has a negative pressure cavity. The upper end of the negative pressure cavity is provided with an openable cover plate 34, and a plurality of evenly arranged rectangular air ports 341 are formed in the cover plate 34. The paper feeding cams 33 are located in the air ports 341 and are rotationally connected by arranging paper feeding shafts. The paper feeding shafts are parallelly distributed in the negative pressure cavity, and the two ends of the paper feeding shafts are in transmission connection with the servo motor 35. The front edge suction fan 32 is in communication with the front edge paper feeding air box 31 through a pipeline. Under the action of the suction force of the front edge suction fan 32, the paperboard at the bottom layer can be attached to the surface of the paper feeding cam 33 and fed out with the rotation of the paper feeding cam 33. At the same time, the dust attached to the bottom end of the paperboard can be sucked into the negative pressure cavity for storage through the air ports 341, and the openable cover plate 34 facilitates cleaning.

[0034] It is worth mentioning that a plurality of guide rollers 36 are arranged between the front edge paper feeding air box 31 and the paper feeding platform 2. The plurality of guide rollers 36 are arranged along the length direction of the front edge paper feeding air box 31, and the two ends of the guide rollers 36 are connected with fixed seats 361 which are fixedly connected to one side of the front edge paper feeding air box 31. In order to smoothly transition the paperboard from the paper feeding platform 2 to the front edge paper feeding air box 31, the paperboard stacked at the bottom end is individually and sequentially guided and conveyed by the guide rollers 36, thereby speeding up the conveying speed of the paperboard.

[0035] In the embodiment, the paper feeding platform 2 is internally provided with a plurality of paper feeding guide rollers 21, the plurality of paper feeding guide rollers 21 are equidistantly and parallelly distributed, and a paper pushing assembly 22 is slidingly connected above the paper feeding platform 2; the paper pushing assembly 22 comprises a cross beam 221 arranged along the length direction of the paper feeding platform 2, and a paper pushing rod 222 movably connected to the cross beam 221, both ends of the cross beam 221 are slidingly connected to the paper feeding platform 2 through a nut block, and both ends of the paper pushing rod 222 are hingedly connected to the top end of the cross beam 221.

[0036] Specifically, when the paperboard in the stack is placed on the paper feeding guide roller 21, it is difficult to feed it out by relying on the guide roller 36 alone due to the large weight of the paperboard in the stack. In order to avoid the problem that the paperboard is difficult to feed out due to the large weight, the paper pushing rod 222 is slidingly connected above the platform, and both ends of the paper pushing rod 222 are hingedly connected to the cross beam 221, so that the height of the paper pushing rod 222 is just enough to push the paperboard one by one onto the front edge paper feeding air box 31, thereby improving the conveying speed of the paperboard.

[0037] In the embodiment, the paperboard limiting mechanism 5 comprises a transverse moving slide 51, a paper blocking frame 52 slidingly connected to the transverse moving slide 51, and a driving assembly 53 for driving the paper blocking frame 52 to slide horizontally along the transverse moving slide 51, the transverse moving slide 51 penetrates through the top of the machine frame 1 along the X direction of the machine frame 1, and the back side of the transverse moving slide 51 is provided with the cleaning assembly 7; the paper blocking frame 52 is installed in the middle of the transverse moving slide 51, and the paper blocking frame 52 is composed of a left paper blocking plate 521, a right paper blocking plate 522 and a middle paper blocking plate 523, the left paper blocking plate 521 and the right paper blocking plate 522 are respectively located on both sides of the middle paper blocking plate 523, and the left paper blocking plate 521 and the right paper blocking plate 522 are independently slidingly connected to the transverse moving slide 51.

[0038] Specifically, when the paperboard is conveyed to the front edge paper feeding air box 31, the paperboard limiting mechanism 5 adjusts and limits the size of the paperboard, first, according to the length of the paperboard, the left paper blocking plate 521 and the right paper blocking plate 522 are driven to slide along the transverse moving slide, so that they can be clamped on both sides of the paperboard, and the middle paper blocking plate 523 is used to limit the front side position of the paperboard; wherein, the driving assembly 53 is used to separately control the left paper blocking plate 521, the right paper blocking plate 522 and the middle paper blocking plate 523 when driving the paper blocking frame 52 to move; the driving assembly 53 comprises a left blocking plate adjusting motor 531, a right blocking plate adjusting motor 532 and a paper hitting cylinder 533, the left blocking plate adjusting motor 531, the right blocking plate adjusting motor 532 and the paper hitting cylinder 533 independently drive the positions of the left paper blocking plate 521, the right paper blocking plate 522 and the middle paper blocking plate 523 on the transverse moving slide 51, so that they can be limited according to paperboards of different widths, so that they can adapt to paperboards of different sizes and improve their application range.

[0039] In the embodiment, the cleaning assembly 7 comprises a dust collecting box 71 and a roller brush 72 arranged in the dust collecting box 71, one side of the dust collecting box 71 is provided with a linear slide rail which is in sliding connection with a transverse sliding table, and the two ends of the roller brush 72 are provided with brush switches 73 which are in electrical connection with the roller brush 72.

[0040] Specifically, the roller brush 72 can move together with the paperboard limiting mechanism 5, when the left paper blocking plate 521, the right paper blocking plate 522 and the middle paper blocking plate 523 adjust the clamping distance according to the size of the paperboard, the brush switches 73 at the two ends of the roller brush 72 can sense the position of the paperboard and then send signals to the roller brush 72, so that the roller brush 72 can clean the surface of the conveyed paperboard to prevent dust and other impurities from affecting the subsequent printing work, thereby improving the printing effect of the paperboard.

[0041] The working principle of the utility model is as follows:

[0042] When the lifting lifting assembly 4 detects that the printing machine paper feeding instruction signal and the printing roller period signal are synchronous, the swing connecting rod 45 drives the front edge paper feeding air box 31 to move downward under the action of the swing cylinder, when the paperboard at the bottom layer contacts the paper feeding cam 33, the servo motor 35 drives the paper feeding cam 33 to start rotating by driving the paper feeding shaft, and the paperboard at the bottom layer is fed out, in the paperboard conveying process, the front and rear and left and right sides of the stacked paperboard are positioned and limited by the middle paper blocking plate 523, the paper pushing rod 222, the left paper blocking plate 521 and the right paper blocking plate 522 along the conveying direction of the paperboard, wherein a gap is left between the middle paper blocking plate 523 and the top surface of the paper feeding cam 33 for the paperboard at the bottom layer to pass through, and the bottom layer paperboard is attached to the surface of the paper feeding cam 33 and is fed out with the rotation of the paper feeding cam 33 under the action of the suction force of the front edge suction fan 32, in order to avoid the problem that the paperboard is difficult to feed out due to excessive weight, the paper pushing rod 222 is used to push the paperboard one by one to the front edge paper feeding air box 31, as the paperboard is gradually fed out, the servo motor 35 drives the paper feeding shaft to drive the paper feeding cam 33 to start stopping rotating, the swing connecting rod 45 reversely rotates and drives the front edge paper feeding air box 31 to move upward under the action of the lifting lifting assembly 4, so that the paperboard is conveyed in the horizontal direction, and a group of paper feeding actions are completed.

[0043] The embodiments of the specific embodiment are the preferred embodiments of the application, and do not limit the protection scope of the application, wherein the same parts are indicated by the same reference numerals. Therefore: any equivalent changes made according to the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. A continuous corrugated paper feeding and conveying device that does not damage the strength of the cardboard, comprising a frame, a paper feeding platform mounted on the frame for holding the cardboard, and a leading-edge bellows feeding mechanism for conveying the cardboard, characterized in that, The front edge air feed mechanism is a swing lifting structure, and a lifting lifting assembly is in transmission connection between the front edge air feed mechanism and the rack; a paperboard limiting mechanism is arranged above the tail of the front edge air feed mechanism; the paperboard limiting mechanism is fixedly connected to the rack, and a linkage assembly is connected between the paperboard limiting mechanism and the front edge air feed mechanism, and the linkage assembly is in transmission connection with the lifting lifting assembly; under the action of the linkage assembly, the front edge air feed mechanism is driven to move up or down by the lifting lifting assembly.

2. The continuous paper feeding device for corrugated paper without destroying the strength of paperboard according to claim 1, wherein The lifting lifting assembly comprises an air box lifting base, a nut mounting seat, a lifting slide rail assembly and a swing connecting rod, the air box lifting base is installed in the rack, the nut mounting seat is fixed to the top end of the air box lifting base, a lifting transmission screw rod is installed on the nut mounting seat, the top end of the lifting transmission screw rod abuts against the front edge paper feed air box mechanism, the lifting slide rail assembly is composed of a lifting slide rail and a linear slide block, the lifting slide rail is vertically arranged on the inner side wall of the rack, the linear slide block is slidingly connected to the lifting slide rail, and one end of the linear slide block is fixedly connected to the side wall of the front edge paper feed air box mechanism, and the swing connecting rod is rotatably connected to the back of the front edge paper feed air box mechanism, and the two ends of the swing connecting rod are in transmission connection with the linkage assembly.

3. The continuous paper feeding device for corrugated paper without destroying the strength of paperboard according to claim 2, wherein The linkage assembly comprises a variable speed over bridge gear set, a transmission belt and a driving motor, a plurality of variable speed over bridge gear sets are arranged, one end of each of the plurality of variable speed over bridge gear sets is connected to the paperboard limiting mechanism and the front edge air feed mechanism respectively, and the variable speed over bridge gear sets are in meshing connection with each other, the transmission belt is sleeved between the variable speed over bridge gear sets and the swing connecting rod, and the output end of the driving motor is in transmission connection with one of the variable speed over bridge gear sets, so that the front edge air feed mechanism and the paperboard limiting mechanism are driven to synchronously transmit by the linkage assembly.

4. The continuous paper feeding device for corrugated paper without destroying the strength of paperboard according to claim 3, wherein The front edge air feed mechanism comprises a front edge paper feed air box, a front edge suction fan arranged at the bottom end of the front edge paper feed air box and a plurality of paper feed cams rotatably connected in the front edge paper feed air box, the two ends of the front edge paper feed air box are slidingly connected to the rack through the lifting slide rail assembly, the front edge paper feed air box has a negative pressure cavity inside, an openable cover plate is arranged at the upper end of the negative pressure cavity, a plurality of evenly arranged rectangular air ports are formed in the cover plate, the paper feed cams are located in the air ports and are rotatably connected through a paper feed shaft, the paper feed shaft is parallelly distributed in the negative pressure cavity, and servo motors are in transmission connection with the two ends of the paper feed shaft, and the front edge suction fan is in communication with the front edge paper feed air box through a pipeline.

5. The continuous paper feeding device for corrugated paper without destroying the strength of paperboard according to claim 4, wherein A plurality of guide rollers are arranged between the front edge paper feed air box and the paper feed platform, the plurality of guide rollers are arranged along the length direction of the front edge paper feed air box, and the two ends of the guide rollers are connected with fixing seats, and the fixing seats are fixedly connected to one side of the front edge paper feed air box.

6. The continuous paper feeding device for corrugated paper without destroying the strength of paperboard according to claim 1, wherein A plurality of paper feed guide rollers are arranged in the paper feed platform, the plurality of paper feed guide rollers are equidistantly and parallelly distributed, and a paperboard pushing assembly is slidingly connected above the paper feed platform.

7. The continuous paper feeding device for corrugated paper without destroying the strength of paperboard according to claim 6, wherein The paperboard pushing assembly comprises a cross beam frame arranged along the length direction of the paper feeding platform, and a paper pushing rod movably connected to the cross beam frame.

8. The continuous paper feeding device for corrugated paper without destroying the strength of paperboard according to claim 1, wherein The paperboard limiting mechanism comprises a transverse moving slide, a paper blocking frame slidably connected to the transverse moving slide, and a driving assembly for driving the paper blocking frame to slide horizontally along the transverse moving slide.

9. The continuous paper feeding device for corrugated paper without destroying the strength of paperboard according to claim 8, wherein The driving assembly comprises a left blocking plate adjusting motor, a right blocking plate adjusting motor and a paper hitting cylinder.

10. The continuous paper feeding device for corrugated paper without destroying the strength of paperboard according to claim 8, wherein The cleaning assembly comprises a dust collecting box and a roller brush arranged in the dust collecting box. The dust collecting box is provided with a linear slide rail on one side, the linear slide rail is slidably connected to the transverse moving slide, and the two ends of the roller brush are provided with brush switches which are electrically connected to the roller brush.

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