A double-station automatic palletizing device

Abstract

The present invention relates to a double-station automatic stacking device, including a conveyor belt, a paper receiving work platform for receiving sheet packaging paper shells is arranged at the material outlet of the conveyor belt in the frame, the paper receiving work platform can be lifted up and down, and left and right aligned paper boards that can move in alignment are arranged on both sides of the paper receiving work platform, a front aligned paper board is arranged on the side of the paper receiving work platform close to the conveyor belt, and a rear aligned paper board is arranged on the side of the paper receiving work platform away from the conveyor belt, and the rear aligned paper board can move forward and backward to achieve paper alignment. The patting paper board can be adjusted according to the size of the paper shell, suitable for paper shell products of different sizes, and the product has good adaptability to the machine; the patting frequency of the patting paper board is adjustable and controllable. At the same time, during use, the mechanical mechanism of the equipment is combined with soft counting, and the model calculation formula program established in the PLC is used to realize the control of the stacking quantity of sheet packaging paper shells by soft counting, so that the number of each pile of paper shells completed by stacking is controllable and adjustable.

Description

Technical Field

[0001] The invention relates to the technical field of printed matter production equipment, and in particular to a double-station automatic stacking device for sheet-shaped packaging paper shells and a use method thereof. Background Art

[0002] The printed packaging paper shells are generally in sheet form to facilitate storage and transportation. When used, the sheet packaging paper shells are processed into packaging boxes of various shapes such as squares. The processing method is to fold and glue the corresponding parts of the sheet packaging materials on the packaging production line, and then form and bond them mechanically; such as strip cigarette shells, toothpaste packaging shells, etc.

[0003] After processing, sheet packaging paper shells need to be stacked and packaged. Existing printing production enterprises generally use manual stacking for the collection and stacking of sheet packaging paper shells after production, which requires a lot of time and manpower, and the number of sheet packaging paper shells in each stack is often prone to errors, which more or less affects the company's cost. When the purchaser conducts random inspections, if there are fewer sheets, they will be counted as unqualified, affecting the performance of the contract and the company's reputation. If there are more sheets, the excess will not be included in the supply volume, which will invisibly increase the cost of the production company; and when the paper shells are soft and astringent, manual stacking (about 100-200 sheets per stack) is difficult to align, which will reduce the speed of the production equipment, sacrifice production efficiency, or invest more manpower (according to company statistics, the company's current double-station window sticker machine collection and stacking are all manually stacked and aligned, and the machine speed reaches 2 0000 sheets / hour, 2~3 people are needed for collecting materials, with high labor cost, low efficiency and high labor intensity), and because the product has just passed the window (transparent film is pasted on the hollow part of the paper shell), the glue position is not yet firm, and manual stacking and alignment may easily cause the transparent film to shift and produce waste; although some paper shell and cardboard stacking equipment has appeared on the market, when enterprises try to introduce and use it, they find that the shell stacking equipment has poor versatility. After the shape and size of the produced sheet packaging paper shell changes, the equipment needs to be shut down for a long time for adjustment, and has poor versatility. The equipment cannot accurately control the number of stacked sheet packaging paper shells, and cannot control the number of paper shells in each stack; at the same time, when stacking and aligning, it is easy to squeeze the sheet packaging paper shell stack, causing the transparent film that has just passed the window (transparent film is pasted on the hollow part of the paper shell) to shift and produce waste. Summary of the invention

[0004] In view of the above problems, the present invention provides a simple and efficient double-station automatic stacking device for sheet packaging paper shells and a method for using the same, which can realize controllable and adjustable stacking quantity and quantitative output during batch production of sheet packaging paper shells, and the stacking arrangement and alignment are flexible, and waste is not easily generated.

[0005] The specific technical solution of the present invention is a double-station automatic stacking device, including a conveyor belt for transporting sheet-like packaging paper shells, and also including a frame, the conveyor belt discharge end is installed with the frame, and a paper receiving work platform for receiving the sheet-like packaging paper shells is arranged at the conveyor belt discharge port in the frame, the paper receiving work platform can be raised and lowered, and left and right aligned paper boards that can move in alignment are arranged on both sides of the paper receiving work platform, a front aligned paper board is arranged on the side of the paper receiving work platform close to the conveyor belt, and a rear aligned paper board is arranged on the side of the paper receiving work platform away from the conveyor belt, and the rear aligned paper board can move back and forth to achieve aligned paper.

[0006] A discharging workbench capable of docking with the lowered paper receiving work platform is installed on the side of the frame bottom plate away from the conveyor belt, and a pushing fork capable of pushing the sheet packaging paper shell stack on the paper receiving work platform to the discharging workbench is installed on the side of the discharging workbench close to the paper receiving work platform.

[0007] It also includes a paper stopper. A paper stopper is arranged on the upper side of the conveyor belt discharge port and can move downward to the surface of the conveyor belt when the paper receiving working platform descends, thereby temporarily blocking the sheet-like packaging paper shell.

[0008] Furthermore, preferably, it also includes an encoder arranged on the conveyor belt, and the encoder roller must be in close contact with the belt of the conveyor belt.

[0009] It also includes a paper shell counter, which is located on the upstream equipment of the conveyor belt docking.

[0010] Further, preferably, the rear paper alignment board is installed on the rear paper alignment push rod via a rear paper alignment cross beam, and the rear paper alignment push rod drives the rear paper alignment board to move forward and backward.

[0011] Further, preferably, the rear paper alignment push rod is slidably inserted in the rear paper alignment mounting slide, the rear paper alignment mounting slide is fixed on the side wall of the mounting frame, the rear paper alignment push rod is installed with a rear paper alignment top plate away from the conveyor belt end, and the rear paper alignment push rod is provided with a rear paper alignment spring which can press the rear paper alignment top plate and move back and forth.

[0012] The rear paper aligning push rod is also provided with a rear paper aligning roller, and the rear paper aligning pushing cam is in rolling contact with the rear paper aligning roller and can push the rear paper aligning roller.

[0013] Further, preferably, the left paper aligning paper board and the right paper aligning paper board are mounted on paper aligning push rod I and paper aligning push rod II, and are driven by paper aligning push rod I and paper aligning push rod II to realize movement toward or away from each other.

[0014] Further, preferably, one end of the paper jogging push rod I and the paper jogging push rod II is rotatably connected to a rocker, and the other end of the rocker is eccentrically rotatably connected to the rotating disk.

[0015] Further, preferably, the paper receiving working platform is installed on a lifting synchronous belt through a mounting plate, and the paper receiving working platform is driven to move up and down by the rotation of the lifting synchronous belt.

[0016] Furthermore, preferably, a push fork cylinder is also included, wherein the push fork cylinder is installed below the discharging workbench, and the telescopic rod end of the push fork cylinder is connected to the push fork.

[0017] Further, preferably, two paper receiving work platforms are symmetrically arranged, and two groups of corresponding left-aligned cardboard, right-aligned cardboard, front-aligned cardboard, rear-aligned cardboard, discharge workbench, push fork and paper stop plate are arranged.

[0018] Another object of the present invention is to provide a method for using the above-mentioned double-station automatic palletizing device, comprising the following steps:

[0019] 1) Measurement model parameters: The length from the feeding position of the sheet packaging paper shell on the conveyor belt to the point where the paper stopper contacts the conveyor belt is measured as L P ; Measure the length of the sheet packaging paper shell as L Z .

[0020] 2) Set the number of palletizing plastics: Input the number of palletizing plastics for station 1 X1 and station 2 X2 into the PLC logic control unit through the human-machine interaction unit.

[0021] 3) Equipment operation: The equipment is turned on, and the sheet packaging carton after the window pasting process, after the carton counter collects the carton counting signal, falls onto the conveyor belt one by one and is stacked on the conveyor belt in a fish scale shape.

[0022] 4) PLC operation calculation model: When X1 or X2 reaches the set value, the PLC input point starts to record the number of encoder pulses, and the PLC logic control unit runs the calculation model formula built in advance: B=L P ×A÷(dπ);

[0023] Where B is the number of pulses that the encoder needs to roll when the last sheet of packaging paper reaches the paper stop plate when the X1 or X2 setting value is reached; A is the number of pulses that the encoder rotates one circle, which is a known quantity obtained based on the encoder model used; d is the diameter of the encoder roller, which can be actually measured and obtained.

[0024] The B value can be obtained through the above formula. When the encoder reaches the B value, that is, when the B value meets the condition; the PLC logic control unit controls the operation of the paper stop cylinder of station 1 or station 2, and the paper stop plate temporarily blocks the subsequent sheet packaging paper shell.

[0025] Another input point of the PLC starts recording the number of encoder pulses, and the PLC logic control unit runs the pre-built calculation model formula: C=LZ ×A÷(dπ).

[0026] Where C is the number of pulses that the encoder needs to scroll after the paper stop plate extends out to block the subsequent sheet packaging paper shells and a set number of papers on the conveyor belt all enter the paper receiving work platform.

[0027] When condition C is met, the PLC logic control unit controls the 1st station paper splicing work platform or the 2nd station paper splicing work platform to descend.

[0028] 5) Pushing out the paper. After the 1-station paper receiving work platform or the 2-station paper receiving work platform drops into place, the platform position detection electric eye feeds back the signal to the PLC logic control unit, which controls the push fork cylinder in the 1-station system working unit or the 2-station system working unit to drive the push fork to push the sheet packaging paper shell stack onto the discharge workbench.

[0029] 6) Reset operation: After the 1st station paper receiving work platform or the 2nd station paper receiving work platform quickly rises and resets, the paper stopper is retracted, and the sheet packaging paper enters the 1st station paper receiving work platform or the 2nd station paper receiving work platform, completing a cycle of counting, sorting and stacking. This reciprocating operation achieves the function of automatic stacking.

[0030] The beneficial effects of the present invention are:

[0031] 1. The present invention adopts the front alignment cardboard for fixing, the left alignment cardboard and the right alignment cardboard are used to beat and arrange the paper shell of the docking paper working platform in the left and right directions, and the rear alignment cardboard and the front alignment cardboard are used to beat and arrange the paper shell of the docking paper working platform in the front and back directions. The beating action in three directions realizes the arrangement and alignment of the fish scale stacked paper shells entering the docking paper working platform on the conveyor belt. The beating cardboard can be adjusted according to the size of the paper shell, which is suitable for paper shell products of different sizes, and the product has good adaptability on the machine.

[0032] 2. The paper aligning motor drives the rotating disk and the rear paper aligning cam to realize the sorting of single paper shells. That is, after each sheet of packaging paper shell is fed into the paper receiving working platform, the left aligning board, the right aligning board and the rear aligning board tap the paper shell stack once or multiple times to align the paper. The principle of sorting by single paper shell is adopted. Therefore, when the paper shell is soft or astringent, the paper aligning action can be completed well. A single paper shell can be sorted and aligned by multiple tapping. Since a single paper shell is light in weight and has low pressure, the transparent film will not be shifted when sorting a single paper shell, effectively reducing the generation of waste material collection rate.

[0033] 3. When the number of stacking reaches the preset value, the paper stop cylinder drives the paper stop plate to extend to block the subsequent paper shells, and the paper receiving work platform automatically drops to the lowest level. After the push fork cylinder drives the push fork to push the paper stack out, the paper receiving work platform automatically rises to the highest level, and the paper stop plate retracts to allow the paper shells at the feed inlet to enter the paper receiving work platform. This reciprocating motion realizes the fully automatic material collection function. By establishing an automatic counting model for stacking and combining it with electronic control, accurate counting of sheet packaging paper shells can be achieved when stacking is completed, and single-station and double-station independent control and operation can be achieved, as well as palletizing of different quantities. In addition, the touch screen can also display machine speed, output and alarm information, and track equipment status in real time.

[0034] 4. The electrified control system is adopted to realize the control of the stacking quantity of sheet packaging paper shells by combining the mechanical mechanism of the equipment with soft counting. The whole equipment has a high degree of automation, which can completely replace manual stacking and has good versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a front view of the double-station automatic palletizing device of the present invention, in which the left transmission mechanism part is not drawn.

[0036] Figure 2 A top view of the double-station automatic palletizing device of the present invention Figure 1 , in which the upper frame baffle at the discharge point is removed to show the internal structure of the equipment, and the discharge workbench is partially omitted.

[0037] Figure 3 A top view of the double-station automatic palletizing device of the present invention Figure 2 , in which the upper frame baffle at the discharge point is removed to show the internal structure of the equipment, and the rear cardboard and other components are removed to show the discharge workbench structure at the bottom of the equipment.

[0038] Figure 4 The left side view of the internal structure of the double-station automatic stacking device of the present invention Figure 1 , where the paper receiving working platform is located at the highest paper receiving position, the push fork returns to the top, and the paper blocking plate is retracted.

[0039] Figure 5 The left side view of the internal structure of the double-station automatic stacking device of the present invention Figure 2 , wherein the paper receiving working platform begins to descend, the paper stopper extends out, and the pushing fork is partially omitted.

[0040] Figure 6 The left side view of the internal structure of the double-station automatic stacking device of the present invention Figure 3 , in which the paper receiving working platform is lowered to the middle, the paper blocking plate is extended, and the paper receiving working platform is partially omitted to show the pushing fork and other mechanisms.

[0041] Figure 7 The left side view of the internal structure of the double-station automatic stacking device of the present invention Figure 4 , where the paper receiving work platform drops to the same level as the discharging work table, and the pushing fork starts working to push the stack.

[0042] Figure 8 The left side view of the internal structure of the double-station automatic stacking device of the present invention Figure 5 , which shows the connection relationship of the left transmission system.

[0043] Fig. 9 for Figure 1 A magnified partial view of point A in the middle.

[0044] Fig.10 for Figure 4 A magnified partial view of point B in the middle.

[0045] Fig.11 The figure is a schematic diagram of the movement of the paper aligning mechanism of the double-station automatic stacking device of the present invention.

[0046] Fig.12 for Figure 5 A magnified partial view of point C in the middle.

[0047] Fig.13 It is a cross-sectional view of the transmission wheel and transmission belt.

[0048] Fig.14 for Figure 8 A partial view in the middle D direction, showing the connecting structure of the rotating disk, the rocker arm and the paper aligning push rod.

[0049] Fig.15 for Fig.14 Mechanical schematic diagram of the rotating disk, rocker and paper aligning push rod.

[0050] Fig.16 This is a three-dimensional reference diagram of the working state of the double-station automatic palletizing device of the present invention.

[0051] Fig.17 The figure shows the parameters used in the double-station automatic palletizing device of the present invention.

[0052] Fig.18 It is a schematic diagram of the length of paper shells in the double-station automatic stacking device of the present invention.

[0053] Fig.19 This is a logic diagram of the control system of the double-station automatic palletizing device of the present invention.

[0054] Fig. 20 This is a working step diagram of the control system of the double-station automatic palletizing device of the present invention.

[0055] In the above figure: 1A-1 station, 2B-2 station, 1-frame, 101-side wall, 102-bottom plate, 103-upper frame baffle, 104-foot cup, 2-conveyor belt, 201-paper shell counter, 202-encoder, 3-paper aligning mechanism, 4-paper receiving work platform, 5-discharging workbench, 6-push fork, 7-paper baffle plate, 8-transmission system, 9-control system;

[0056] Front cardboard, 32-rear cardboard, 33-left cardboard, 34-right cardboard; 3101-front cardboard support;

[0057] Station 331-1 aligns the cardboard on the left, station 332-2 aligns the cardboard on the left, station 341-1 aligns the cardboard on the right, station 342-2 aligns the cardboard on the right;

[0058] 3201-rear paper aligning push rod, 3202-rear paper aligning mounting slide, 3203-rear paper aligning beam, 3204-rear paper aligning connecting block, 3205-rear paper aligning spring, 3206-rear paper aligning top plate, 3207-rear paper aligning roller, 3208-rear paper aligning pushing cam, 3209-rear paper aligning board mounting slot, 3210-rear paper aligning beam mounting slot;

[0059] 3301-paper aligning push rod Ⅰ, 3302-paper aligning push rod Ⅱ, 3303-paper aligning slide seat, 3304-fastening screw hole, 3305-fastening screw rod;

[0060] 401-1 station paper receiving work platform, 402-2 station paper receiving work platform, 403-1 station lifting synchronous belt, 404-2 station lifting synchronous belt, 405-installation plate, 406-slide rail, 407-paper receiving roller, 408-platform position detection electric eye, 409-paper shell height detection electric eye;

[0061] Discharging workbench, 502-discharging roller; 601-push fork cylinder; 701-paper stop mounting frame, 702-paper stop cylinder;

[0062] 01-1 station paper receiving work platform transmission motor; 802-2 station paper receiving work platform transmission motor; 803-paper alignment motor, 804-active rod, 805-transmission chain mechanism, 806-transmission wheel, 807-transmission round belt, 808-rotating disk, 809-rocker, 810-transmission rod;

[0063] 901-PLC logic control unit, 902-human-computer interaction unit, 903-host data interaction unit, 905-detection unit, 906-1 station system working unit, 907-2 station system working unit, 908-paper aligning system working unit. DETAILED DESCRIPTION

[0064] In order to make the technical problems and technical solutions solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0065] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention. Embodiment 1:

[0066] like Figures 1 to 8 As shown, a double-station automatic stacking device includes a conveyor belt 2 that receives upstream equipment for discharging and transporting sheet packaging paper shells. The conveyor belt 2 is mostly a matching output belt for upstream equipment. Of course, it can also be increased by itself. During the window pasting process, the sheet packaging paper shells fall on the conveyor belt 2 one by one in a fish scale shape and are stacked on the conveyor belt 2 after the window pasting (transparent film is pasted on the hollow part of the paper shell). They are sent to the end via the conveyor belt 2. Manual stacking at the discharging end cannot accurately control the stacking quantity. The above is the existing technology.

[0067] The double-station automatic stacking device of the present invention is added to the end of the conveyor belt 2 of the prior art, that is, the discharge end, and includes a frame 1 connected to the conveyor belt 2 for carrying various components. The frame 1 mainly includes two side walls 101 and a bottom plate 102, as well as an upper frame baffle 103 on the upper side, a foot cup 104 installed at the bottom, and of course other components such as a protective cover, an electric control box, and an operation panel.

[0068] The discharging end of the conveyor belt 2 is mounted with a frame 1. In the prior art, most upstream window patching equipment generally has two output ports. Of course, there may also be one output port or multiple output ports, which are all within the protection scope of the present invention.

[0069] A paper receiving platform 4 for receiving sheet-shaped packaging paper shells is provided at the outlet of the conveyor belt 2 in the frame 1. Preferably, two paper receiving platforms 4 are provided symmetrically, namely, a station 1 paper receiving platform 401 and a station 2 paper receiving platform 402, forming station 1A and station 2B. Figures 1 to 3 .

[0070] The paper receiving work platform 4 is installed on the lifting synchronous belt through the mounting plate 405, that is, the left and right side walls 101 are respectively provided with synchronous belt wheels, please refer to Fig. 9, the 1st station paper splicing work platform transmission motor 801 and the 2nd station paper splicing work platform transmission motor 802 rotate the conveying shaft end and are connected to the synchronous belt wheel, and the forward and reverse rotation of the two paper splicing work platform transmission motors respectively drive the 1st station lifting synchronous belt 403 and the 2nd station lifting synchronous belt 404 to move up and down, thereby realizing the up and down lifting movement of the 1st station paper splicing work platform 401 and the 2nd station paper splicing work platform 402 respectively. This embodiment adopts the synchronous wheel rotation to drive the synchronous belt to realize the up and down lifting movement of the paper splicing work platform 4. Of course, the sprocket wheel rotation can also be used to drive the chain to realize the up and down lifting movement of the paper splicing work platform 4, and the screw rod rotation can also be used to drive the screw rod slider to realize the up and down lifting movement of the paper splicing work platform 4. They are equivalent replacements.

[0071] A paper receiving roller 407 is installed on the upper surface of the paper receiving work platform 4. Of course, a smooth strip can also be used directly. The silicone wheel on it can reduce the friction of the product during the discharge process and prevent the product from being scratched, so that the product can be discharged smoothly. The design structure is simple and practical.

[0072] Furthermore, a slide rail 406 is vertically installed on the left side of the 1st station lifting synchronous belt 403 and the 2nd station lifting synchronous belt 404, and a slider is installed on the mounting plate 405. The slider can move up and down in a straight line along the slide rail 406. By adding the slide rail 406, the smooth up and down movement of the paper receiving work platform 4 is further guaranteed.

[0073] like Figure 4 As shown, the paper receiving work platform 4 is generally located at the discharge port of the conveyor belt 2, and receives the sheet-like packaging paper shells stacked on the conveyor belt 2 in a fish scale shape.

[0074] like Figures 1 to 4 As shown, it also includes a paper aligning mechanism 3 for tapping the paper shell stack on the paper working platform 4 once or multiple times to align the paper.

[0075] The paper aligning mechanism 3 includes a left aligning paper board 33 and a right aligning paper board 34 which are arranged on both sides of a paper receiving work platform 4 and can move in alignment.

[0076] Because two paper splicing work platforms 4 are provided, namely the 1-station paper splicing work platform 401 and the 2-station paper splicing work platform 402, two groups of left-aligned paperboards 33 and right-aligned paperboards 34 are also provided accordingly, namely the left-aligned paperboards 33 include the 1-station left-aligned paperboards 331 and the 2-station left-aligned paperboards 332, and the right-aligned paperboards 34 include the 1-station right-aligned paperboards 341 and the 2-station right-aligned paperboards 342.

[0077] The left paper board 33 and the right paper board 34 are installed on the paper aligning push rod I 3301 and the paper aligning push rod II 3302, and are driven by the paper aligning push rod I 3301 and the paper aligning push rod II 3302 to achieve opposite or opposite movement, so that the left paper board 33 and the right paper board 34 are aligned and aligned, which is similar to tapping the left and right hands together to align the paper stack.

[0078] Two paperboard alignment slides 3303 are arranged parallel and symmetrically on the left paperboard alignment cardboard 331 of station 1, the left paperboard alignment cardboard 332 of station 2, the right paperboard alignment cardboard 341 of station 1, and the right paperboard alignment cardboard 342 of station 2. Linear bearings are installed in the paperboard alignment slides 3303. Fastening screw holes 3304 are also opened on the paperboard alignment slides 3303. Fastening screw rods 3305 can be threadedly installed on the fastening screw holes 3304. The fastening screw rods 3305 can tighten the paper alignment push rod I 3301 or the paper alignment push rod II 3302 to achieve the fastening and fixation of the paperboard alignment cardboard and the paper alignment push rod.

[0079] like Fig.11 As shown, the left paperboard 331 of station 1, the left paperboard 332 of station 2, the right paperboard 341 of station 1, and the right paperboard 342 of station 2 are mounted on the paper-aligning push rod Ⅰ3301 and the paper-aligning push rod Ⅱ3302 through the paper-aligning paper slide 3303, and the paper-aligning paper and the paper-aligning push rod can be fastened and fixed by tightening the screw rod 3305. This fastening method is a commonly used technical means in this field. Of course, a half structure can also be used, and quick fastening can be achieved by a clamp.

[0080] By providing two parallel paper aligning push rods I 3301 and II 3302, the stability of the alignment movement of the left and right paper aligning boards 33 and 34 can be ensured. By tightening the screw rod 3305 to lock different push rods, two alignment modes can be achieved.

[0081] That is, method 1: the left-aligned cardboard 331 of station 1 and the right-aligned cardboard 341 of station 1, as well as the left-aligned cardboard 332 of station 2 and the right-aligned cardboard 342 of station 2 are aligned at the same time and then opened and returned to their original positions; method 2: the left-aligned cardboard 331 of station 1 and the right-aligned cardboard 341 of station 1 are aligned, and the left-aligned cardboard 332 of station 2 and the right-aligned cardboard 342 of station 2 are opened and returned to their original positions. Both methods can realize the sorting of single paperboards in the paper pile, and realize the sorting and alignment by tapping lightly, but in method 1, there is a large working gap reserved between the right-aligned cardboard 341 of station 1 and the left-aligned cardboard 332 of station 2, which results in a smaller adjustable range of the left-aligned cardboard 33 and the right-aligned cardboard 34, and a larger overall structure of the equipment.

[0082] Therefore, in this embodiment, by adopting the second method, such as Fig.11As shown, the left aligning paperboard 331 of station 1 and the right aligning paperboard 342 of station 2 are locked and fixed with the paper aligning push rod Ⅰ3301, and the right aligning paperboard 341 of station 1 and the left aligning paperboard 332 of station 2 are locked and fixed with the paper aligning push rod Ⅱ3302. When the paper aligning push rod Ⅰ3301 moves to the left, the left aligning paperboard 331 of station 1 and the right aligning paperboard 342 of station 2 are driven to move to the left first. At the same time, the paper aligning push rod Ⅱ3302 moves to the right, driving the right aligning paperboard 341 of station 1 and the left aligning paperboard 332 of station 2 to move to the right. At this time, station 1A exchanges and aligns the paper stack, and station 2B opens and returns to its original position. Then, the paper aligning push rod I 3301 moves to the right, and the paper aligning push rod II 3302 moves to the left. At this time, station 1A opens and returns to its original position, and station 2B exchanges and aligns the paper stack. In this way, there is no large working gap reserved between the right aligning paperboard 341 of station 1 and the left aligning paperboard 332 of station 2. The left aligning paperboard 33 and the right aligning paperboard 34 have a large adjustable range, and the overall structure of the equipment can be relatively compact and small in size.

[0083] A front aligning paperboard 31 is provided on the side of the paper receiving platform 4 close to the conveyor belt 2. Similarly, a front aligning paperboard 31 and a front aligning paperboard 31 (not shown in the figure) are provided corresponding to the paper receiving platform 401 and the paper receiving platform 402. The front aligning paperboard 31 is close to the conveyor belt 2 and is tangent to the conveyor belt 2. Figures 1 to 7 The front cardboard 31 is fixed on the two side walls 101 of the frame 1 through the front cardboard bracket 3101.

[0084] Corresponding to the front alignment cardboard 31, a rear alignment cardboard 32 is arranged on the side of the paper splicing work platform 4 away from the conveyor belt 2, and the rear alignment cardboard 32 can move forward and backward to realize paper alignment; similarly, corresponding to the 1-station paper splicing work platform 401 and the 2-station paper splicing work platform 402, a 1-station rear alignment cardboard and a 2-station rear alignment cardboard (not marked in the figure) are arranged, see Figure 2 .

[0085] like Figure 2 , Figures 4 to 7 and Fig.10 As shown, there are two rear paper alignment push rods 3201 symmetrically arranged on the left and right sides, and the rear paper alignment push rods 3201 are slidably inserted in the rear paper alignment mounting slide 3202. The rear paper alignment mounting slide 3202 is fixedly mounted on the side wall 101 of the frame 1. There are two rear paper alignment mounting slides 3202, one on the front and the other on the back side of the device.

[0086] The rear paperboard 32 is in an "L"-shaped structure, and a rear paperboard mounting groove 3209 is provided on the rear paperboard 32. The rear paperboard 32 is tightened with the rear paperboard mounting groove 3209 by means of bolt threads to achieve adjustability and fastening with the rear paperboard crossbeam 3203. Correspondingly, a rear paperboard crossbeam mounting groove 3210 is provided on the rear paperboard crossbeam 3203 for mounting T-bolts corresponding to the rear paperboard mounting groove 3209. By setting the rear paperboard mounting groove 3209, the rear paperboard 32 can be adjusted forward and backward, and by means of the rear paperboard crossbeam mounting groove 3210, the rear paperboard 32 can be adjusted left and right, and the adjustability is good.

[0087] The rear paper alignment cardboard 32 is installed on the rear paper alignment beam 3203, and the two ends of the rear paper alignment beam 3203 are connected with the rear paper alignment connecting blocks 3204. The rear paper alignment connecting blocks 3204 adopt the same structure as the paper alignment cardboard slide seat 3303, and are fastened to the rear paper alignment push rod 3201 through fastening screw holes and fastening screw rods to achieve quick locking and quick adjustment.

[0088] A rear paper aligning top plate 3206 is installed at the two ends of the rear paper aligning push rod 3201 away from the conveyor belt. A rear paper aligning spring 3205 is installed on the rear paper aligning push rod 3201, which can press the rear paper aligning top plate 3206 to move back and forth. One end of the rear paper aligning spring 3205 presses the rear paper aligning mounting slide 3202, and the other end presses the rear paper aligning top plate 3206. Of course, an independent baffle can also be used to replace the rear paper aligning mounting slide 3202 to press the rear paper aligning spring 3205, which is an equivalent replacement.

[0089] The rear aligning push rod 3201 is also provided with a rear aligning roller 3207. The rear aligning pushing cam 3208 is in rolling contact with the rear aligning roller 3207 and is capable of pushing the rear aligning roller 3207. Fig.10 The rear paper aligning spring 3205 gives the rear paper aligning push rod 3201 a rightward elastic force to keep the rear paper aligning roller 3207 in contact with the rear paper aligning pushing cam 3208. As the rear paper aligning pushing cam 3208 rotates, a cam movement can be realized, thereby realizing the back paper aligning paperboard 32 to move back and forth, thereby realizing the front and back tapping and paper aligning.

[0090] From the above, the present invention adopts the front alignment cardboard 31 for fixing, the left alignment cardboard 33 and the right alignment cardboard 34 for beating and arranging the paper shells on the docking paper working platform 4 in the left and right directions, and the rear alignment cardboard 32 and the front alignment cardboard 31 for beating and arranging the paper shells on the docking paper working platform 4 in the front and back directions. The beating action in three directions realizes the arrangement and alignment of the fish-scale stacked paper shells that enter the docking paper working platform 4 on the conveyor belt 2. The beating cardboard can be adjusted according to the size of the paper shell, which is suitable for paper shell products of different sizes, and the product has good adaptability to the machine.

[0091] like Figure 8As shown, it also includes a transmission system 8, which includes a 1-station paper splicing work platform transmission motor 801 and a 2-station paper splicing work platform transmission motor 802 respectively located outside the left and right side walls 101.

[0092] It also includes a paper aligning motor 803 which is arranged on the outside of the left side wall 101 and in the protective cover shell in this embodiment. A sprocket is installed at the rotating end of the paper aligning motor 803, which drives an active rod 804 located above it to rotate through the sprocket and the chain. The two ends of the active rod 804 respectively drive the movable rotating disk 808 corresponding to the paper aligning push rod I 3301 and the paper aligning push rod II 3302 to rotate through the transmission chain mechanism 805 (including sprockets, chains, bearings, and bearing supports).

[0093] The left ends of the paper aligning push rod I 3301 and the paper aligning push rod II 3302 are rotatably connected with a rocker 809, and the other end of the rocker 809 is eccentrically rotatably connected with a rotating disk 808, thereby forming a rocker push rod mechanism. Please refer to Fig.14 and Fig.15 The paper aligning push rod I 3301 and the paper aligning push rod II 3302 reciprocate left and right to realize the beating action of the left and right paper aligning paper boards 33 and 34 on the paper shells, completing the steps of arranging and aligning the paper shells. The frequency of the paper aligning action can be adjusted and controlled by the rotation speed and rate of the rotating disk 808.

[0094] The rightmost end of the active rod 804 is also equipped with a transmission wheel 806, and a transmission round belt 807 is installed on the transmission wheel 806. The power is transmitted through the transmission round belt 807 to drive the transmission rod 810 to rotate, and the rear paper aligning pushing cam 3208 is installed on the transmission rod 810. Please refer to Figure 2 , Figure 8 , Fig. 9 and Fig.13 The transmission rod 810 rotates to drive the rear paper aligning cam 3208 to rotate and press the rear paper aligning roller 3207, thereby driving the rear paper aligning push rod 3201 to reciprocate back and forth.

[0095] In summary, if Fig.16 As shown, the paper aligning motor 803 drives the rotating disk 808 and the rear paper aligning cam 3208 to realize the sorting of single paper shells, that is, after each sheet of packaging paper shell is fed into the paper receiving working platform 4, the left aligning paper board 33, the right aligning paper board 34 and the rear aligning paper board 32 tap the paper shell stack once or multiple times to align the paper, and the principle of sorting by a single paper shell is adopted. Therefore, when the paper shell is soft or astringent, the paper aligning action can be well completed. A single paper shell can be sorted and aligned by multiple tapping. Since a single paper shell is light in weight and has low pressure, the transparent film will not be shifted when sorting the single paper shell, thereby effectively reducing the generation of waste material collection rate.

[0096] like Figures 4 to 7As shown, when the number of paper shells in the sheet packaging paper shell stack reaches the set number, the paper splicing work platform 4 will descend, and the 1-station paper splicing work platform 401 and the 2-station paper splicing work platform 402 respectively adopt transmission mechanisms with independent power sources, so that the 1st station 1A and the 2nd station 2B can be operated independently, and single-station operation can be realized, and double-station operation can also be realized separately and independently.

[0097] A discharging workbench 5 capable of docking with the lowered paper splicing work platform 4 is installed on the side of the bottom plate 102 of the frame 1 away from the conveyor belt 2. The discharging workbench 5 of course also corresponds to the 1-station paper splicing work platform 401 and the 2-station paper splicing work platform 402, including the 1-station discharging workbench and the 2-station discharging workbench (not marked in the figure), and a discharging roller 502 is arranged on its upper surface. The structure is the same as that of the paper splicing work platform 4, and a smooth strip can be directly used. The silicone wheel thereon can reduce the friction of the product during the discharging process and prevent the product from being scratched, so that the product can be smoothly output. The design structure is simple and practical.

[0098] A pushing fork 6 is installed on the side of the discharging workbench 5 close to the paper receiving workbench 4, which can push the stack of sheet packaging paper shells on the paper receiving workbench 4 to the discharging workbench 5; the pushing fork cylinder 601 is installed below the discharging workbench 5, and the telescopic rod end of the pushing fork cylinder 601 is connected to the pushing fork 6. The pushing fork cylinder 601 is telescopically extended to realize the pushing fork 6 to push the paper stack outward, that is, to push the stack of sheet packaging paper shells on the paper receiving workbench 4 to the discharging workbench 5.

[0099] like Figure 5 , Fig.12 As shown, it also includes a paper stop plug 7. A paper stop plug 7 is arranged on the upper side of the discharge port of the conveyor belt 2, which can move downward to the surface of the conveyor belt 2 when the paper receiving work platform 4 is lowered, and plays a role of temporarily blocking the sheet packaging paper shell. The paper stop plug 7 is connected to the telescopic end of the paper stop cylinder 702, and moves downward obliquely to the surface of the conveyor belt 2 through the paper stop cylinder 702, and contacts the upper surface of the conveyor belt 2. Preferably, the contact point of the paper stop plug 7 and the conveyor belt 2 is at the tangent point of the upper surface of the conveyor belt 2 and the curved belt surface or on the front side of the curved belt surface.

[0100] Of course, in order to correspond to the first station 1A and the second station 2B, the paper blocking plates 7 are provided in two groups and four pairs, which independently complete the paper blocking of the first station 1A and the second station 2B.

[0101] The paper stop cylinder 702 is installed on the two side walls 101 of the frame through the paper stop mounting frame 701. Of course, in order to ensure the stability of the paper stop plug 7, a guide plate with a guide groove can be installed on the paper stop mounting frame 701. Guide cylinders are provided at both ends of the paper stop plug 7. The guide cylinders can slide in the guide grooves. Furthermore, bearings can be installed on the outside of the guide cylinders, and slide rails can be installed on the outside of the guide plates. The bearings can roll on the slide rails, which can ensure the smooth movement of the paper stop plug 7.

[0102] like Fig.16 , Fig.17 As shown, it includes an encoder 202 arranged on the conveyor belt 2, and the encoder 202 is in contact with the conveyor belt 2; one encoder 202 can meet the data collection requirements of two workstations, the data collection encoder A phase output pulse required for workstation 1, and the data collection encoder B phase output pulse required for workstation 2. The encoder 202 can be installed at any position of the belt. In this embodiment, the encoder 202 is arranged on the lower side of the belt surface of the conveyor belt 2.

[0103] It also includes a paper shell counter 201, which is located on the upstream equipment connected to the conveyor belt 2. Generally, the upstream equipment is equipped with paper shell counting signal equipment. If the upstream equipment is not equipped with paper shell counting signal equipment, a paper shell counter 201 can be added at its discharge port or discharge power supply. The paper shell counter 201 can use a counting electric eye, which is an existing mature technical equipment.

[0104] Of course, in order to correspond to station 1A and station 2B, two groups of paper shell counters 201 should be set to collect paper shell counting signals of station 1A and station 2B respectively.

[0105] The sheet-like packaging paper shells are stacked in a fish-scale shape on the conveyor belt 2, so the counting signal cannot be collected, and the counting signal of the paper shell at the front end is collected. Embodiment 2:

[0106] like Figures 19 to 20 As shown, the present invention is equipped with a special control system 9, which includes a PLC logic control unit 901 installed in an electric control box, a human-computer interaction unit 902, a host data interaction unit 903, an encoder 202, a detection unit 905, a 1-station system working unit 906, a 2-station system working unit 907, and a paper aligning system working unit 908.

[0107] The PLC logic control unit 901 mainly includes a PLC logic controller, which implements control instructions such as logic operations, sequence control, timing, counting, arithmetic operations, etc. of various data, and controls the equipment through digital or analog input / output.

[0108] The human-machine interaction unit 902 includes a touch screen installed on the upper side of the rack 1 to realize functions such as equipment operation monitoring and data input.

[0109] The encoder 202 is arranged on the conveyor belt 2, and the rotating head of the encoder 202 needs to be in contact with the belt of the conveyor belt 2, and the roller of the encoder 202 must be close to the belt to realize the collection of data used in the quantitative output model formula.

[0110] The detection unit 905 includes a platform position detection electric eye 408 arranged on one side of the lifting synchronous belt in the frame 1 for detecting and controlling the lifting and lowering control of the paper splicing working platform 4, and a paper shell height detection electric eye 408 installed on the rear cardboard 32 for controlling the paper splicing working platform 4 to gradually lower the paper splicing working platform 4 as the height of the paper stack increases so that it can receive the sheet packaging paper shell input from the conveyor belt 2, and a paper shell counter 201 for collecting paper shell counting signals.

[0111] The 1-station system working unit 906 includes a 1-station paper splicing working platform transmission motor 801 for controlling the lifting and lowering of the 1-station paper splicing working platform 401, a paper blocking cylinder 702 of the 1-station 1A, and a pushing fork cylinder 601 of the 1-station 1A.

[0112] The 2-station system working unit 907 includes a 2-station paper splicing working platform transmission motor 802 for controlling the lifting and lowering of the 2-station paper splicing working platform 402, a paper blocking cylinder 702 of the 2-station 2B, and a pushing fork cylinder 601 of the 2-station 2B.

[0113] The paper aligning system working unit 908 includes a paper aligning motor 803 for controlling the movement of the left aligning paper board 33 , the right aligning paper board 34 and the rear aligning paper board 32 .

[0114] The host data interaction unit 903 includes a data line to realize functions such as host data exchange, counting collection, early warning ringing, alarm shutdown, etc.

[0115] That is, the human-machine interaction unit 902 , the encoder 202 , the detection unit 905 , the 1-station system working unit 906 , the 2-station system working unit 907 , and the paper aligning system working unit 908 are connected to the PLC logic control unit 901 via the host data interaction unit 903 . Embodiment 3:

[0116] The method for using the double-station automatic palletizing device of the present invention comprises the following steps:

[0117] 1) Measurement model parameters: The length from the feeding position of the sheet packaging paper shell on the conveyor belt 2 to the point where the paper stopper 7 contacts the conveyor belt 2 is measured as L P ; Measure the length of the sheet packaging paper shell as L Z .

[0118] 2) Setting the number of palletizing plastics: Input the number of palletizing plastics X1 at station 1A and the number of palletizing plastics X2 at station 2B into the PLC logic control unit 901 through the human-machine interaction unit 902.

[0119] 3) Equipment operation: The equipment is turned on, and the sheet packaging paper shells after the window pasting process are collected by the paper shell counter 201, and then fall onto the conveyor belt 2 one by one and are stacked on the conveyor belt 2 in a fish scale shape.

[0120] 4) PLC operation calculation model: When X1 or X2 reaches the set value, the PLC input point starts to record the number of encoder 202 pulses, and the PLC logic control unit 901 runs the pre-built calculation model formula: B=L P ×A÷(dπ); where B is the number of pulses that the encoder 202 needs to roll when the last sheet of packaging paper reaches the paper stop plate 7 of the setting value of X1 or X2; the number of pulses of the A encoder for one rotation is a known quantity obtained according to the encoder model used, and d is the encoder roller diameter, which can be actually measured and obtained. The B value can be obtained by the above formula. When the encoder 202 reaches the B value, it satisfies the condition that the B value meets the condition; the PLC logic control unit 901 controls the paper stop cylinder 702 of station 1A or station 2B to run, and the paper stop plate 7 temporarily blocks the subsequent sheet packaging paper; another input point of the PLC starts to record the number of encoder pulses, and the PLC logic control unit 901 runs the calculation model formula constructed in advance: C=L Z ×A÷(dπ); where C is the number of pulses required for the encoder 202 to scroll after the paper stop plate 7 extends out to block the subsequent sheet-like packaging paper shells and a set number of papers on the conveyor belt 2 all enter the paper receiving work platform 4; when C meets the conditions, the PLC logic control unit 901 controls the 1st station paper receiving work platform 401 or the 2nd station paper receiving work platform 402 to descend.

[0121] 5) Pushing out the paper. After the 1st station paper receiving work platform 401 or the 2nd station paper receiving work platform 402 descends to its position, the platform position detection electric eye 408 feeds back a signal to the PLC logic control unit 901, which controls the pushing fork cylinder 601 in the 1st station system working unit 906 or the 2nd station system working unit 907 to drive the pushing fork 6 to push the sheet packaging paper shell stack onto the discharging workbench 5.

[0122] 6) Reset operation: After the 1st station paper receiving work platform 401 or the 2nd station paper receiving work platform 402 quickly rises and resets, the paper blocking plate 7 is retracted, and the sheet packaging paper enters the 1st station paper receiving work platform 401 or the 2nd station paper receiving work platform 402, completing a cycle of counting, sorting and stacking. This reciprocating operation achieves the function of automatic stacking.

[0123] Of course, in order to further ensure the reliability of the equipment during operation, a detection electric eye can be added to the discharging position of the discharging workbench 5. After detecting that the packaging paper shell is completely pushed out of the paper receiving work platform 4, a feedback signal is given to the PLC logic control unit 901, which controls the 1st station paper receiving work platform 401 or the 2nd station paper receiving work platform 402 to quickly rise and reset, and then the paper stop plate 7 is retracted.

[0124] The model calculation formula program established in the PLC is used to realize the control of the stacking quantity of soft counting sheet packaging paper shells, so that the number of each pile of paper shells completed in the stacking can be controlled and adjusted.

[0125] When the number of stacking reaches the preset value, the paper-stopping cylinder 702 drives the paper-stopping plug 7 to extend to block the subsequent paper shells, and the paper-receiving working platform 4 automatically drops to the lowest level. After the pushing fork cylinder 601 drives the pushing fork 6 to push the paper stack out, the paper-receiving working platform 4 automatically rises to the highest level, and the paper-stopping plug 7 retracts to allow the paper shells at the feed inlet to enter the paper-receiving working platform 4. This reciprocating motion realizes the fully automatic material collection function. By establishing an automatic counting model for stacking, combined with electronic control, accurate counting of sheet packaging paper shells can be achieved when stacking is completed, and single-station and double-station independent control operation can be achieved, as well as stacking of different quantities. In addition, the touch screen can also display the speed V of the conveyor belt 2 P , production and alarm information, and real-time tracking of equipment status.

[0126] The present invention is described in detail above through specific and preferred embodiments, but those skilled in the art should understand that the present invention is not limited to the embodiments described above, and any modifications, equivalent substitutions, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-station automatic palletizing device, comprising a conveyor belt (2) for transporting sheet-shaped packaging paper shells, characterized in that: It also comprises a frame (1), the frame (1) being installed at the discharge end of the conveyor belt (2), a paper receiving working platform (4) for receiving sheet-shaped packaging paper shells being arranged at the discharge port of the conveyor belt (2) in the frame (1), the paper receiving working platform (4) being capable of being raised and lowered, a left-aligning paperboard (33) and a right-aligning paperboard (34) capable of being moved in alignment are arranged on both sides of the paper receiving working platform (4), a front-aligning paperboard (31) is arranged on the side of the paper receiving working platform (4) close to the conveyor belt (2), and a rear-aligning paperboard (32) is arranged on the side of the paper receiving working platform (4) away from the conveyor belt (2), and the rear-aligning paperboard (32) is capable of being moved forward and backward to achieve alignment of the paper; A discharging worktable (5) capable of docking with the lowered paper receiving worktable (4) is installed on the bottom plate (102) of the frame (1) at a side away from the conveyor belt (2); a pushing fork (6) capable of pushing the stack of sheet packaging paper shells on the paper receiving worktable (4) onto the discharging worktable (5) is installed on a side of the discharging worktable (5) close to the paper receiving worktable (4); It also includes a paper stopper (7), the upper side of the conveyor belt (2) outlet being provided with a paper stopper (7) which can move downward to the surface of the conveyor belt (2) when the paper receiving work platform (4) descends, and plays the role of temporarily blocking the sheet-like packaging paper shell; It also includes an encoder (202) arranged on the conveyor belt (2), wherein the roller of the encoder (202) must be in close contact with the belt of the conveyor belt (2); It also includes a paper shell counter (201), which is located on an upstream device docked with the conveyor belt (2).

2. A double-station automatic palletizing device according to claim 1, characterized in that: The rear paper alignment paperboard (32) is mounted on the rear paper alignment push rod (3201) via a rear paper alignment cross beam (3203), and the rear paper alignment push rod (3201) drives the rear paper alignment paperboard (32) to move forward and backward.

3. A double-station automatic palletizing device according to claim 2, characterized in that: The rear paper aligning push rod (3201) is slidably inserted in the rear paper aligning installation slide (3202); the rear paper aligning installation slide (3202) is fixedly installed on the side wall (101) of the frame (1); a rear paper aligning top plate (3206) is installed at the end of the rear paper aligning push rod (3201) away from the conveyor belt (2); and a rear paper aligning spring (3205) is sleeved on the rear paper aligning push rod (3201) and is capable of pressing the rear paper aligning top plate (3206) to move forward and backward; The rear paper aligning push rod (3201) is also provided with a rear paper aligning roller (3207), and the rear paper aligning pushing cam (3208) is in rolling contact with the rear paper aligning roller (3207) and is capable of pushing the rear paper aligning roller (3207).

4. A double-station automatic palletizing device according to claim 1, characterized in that: The left paperboard (33) and the right paperboard (34) are mounted on a paper-aligning push rod I (3301) and a paper-aligning push rod II (3302), and are driven by the paper-aligning push rod I (3301) and the paper-aligning push rod II (3302) to move towards or away from each other.

5. A double-station automatic palletizing device according to claim 4, characterized in that: One end of the paper jogging push rod I (3301) and the paper jogging push rod II (3302) is rotatably connected to a rocker (809), and the other end of the rocker (809) is eccentrically rotatably connected to a rotating disk (808).

6. The double-station automatic palletizing device according to claim 1, characterized in that: The paper receiving working platform (4) is mounted on the lifting synchronous belt via a mounting plate (405), and the paper receiving working platform (4) is driven to move up and down by the rotation of the lifting synchronous belt.

7. The double-station automatic palletizing device according to claim 1, characterized in that: It also comprises a push fork cylinder (601), wherein the push fork cylinder (601) is installed below the discharging workbench (5), and the telescopic rod end of the push fork cylinder (601) is connected to the push fork (6).

8. A double-station automatic palletizing device according to any one of claims 1 to 7, characterized in that: The paper receiving work platforms (4) are symmetrically arranged in two pieces, and the corresponding left-aligned paperboard (33), right-aligned paperboard (34), front-aligned paperboard (31), rear-aligned paperboard (32), discharge worktable (5) and push fork (6) are arranged in two sets.

9. A method for using the double-station automatic palletizing device according to claim 8, characterized in that: The steps include: 1) Measurement model parameters: The length from the feeding position of the sheet packaging paper shell on the conveyor belt (2) to the point where the paper stopper (7) contacts the conveyor belt (2) is measured as L. P ; Measure the length of the sheet packaging paper shell as L Z ; 2) Setting the number of palletizing plastics: inputting the number of palletizing plastics for station 1 (1A) X1 and the number of palletizing plastics for station 2 (2B) X2 into the PLC logic control unit (901) through the human-machine interaction unit (902); 3) Equipment operation: the equipment is turned on, and the sheet-shaped packaging paper shells that have undergone the window pasting process are dropped onto the conveyor belt (2) one by one after the paper shell counting signal is collected by the paper shell counter (201), and are stacked on the conveyor belt (2) in a fish scale shape; 4) PLC operation calculation model: When X1 or X2 reaches the set value, the PLC input point starts to record the number of encoder (202) pulses, and the PLC logic control unit (901) runs the pre-built calculation model formula: B=L P ×A÷(dπ); Wherein B is the number of pulses required for the encoder (202) to roll when the last sheet of packaging paper reaches the paper stopper (7) at the setting value of X1 or X2; the number of pulses for one rotation of the encoder A is a known quantity obtained according to the encoder model used; d is the diameter of the encoder roller, which can be actually measured and obtained; The B value can be obtained by the above formula. When the encoder (202) reaches the B value, that is, when the B value satisfies the condition, the PLC logic control unit (901) controls the paper stop cylinder (702) of the 1st station (1A) or the 2nd station (2B) to operate, and the paper stop plate (7) temporarily blocks the subsequent sheet-shaped packaging paper shell; Another input point of the PLC starts recording the number of encoder pulses, and the PLC logic control unit (901) runs the pre-built calculation model formula: C=L Z ×A÷(dπ); Wherein C is the number of pulses required for the encoder (202) to scroll after a set number of sheets of paper on the conveyor belt (2) all enter the paper receiving work platform (4) after the paper stop plate (7) extends out to block the subsequent sheet-shaped packaging paper shell; When condition C is satisfied, the PLC logic control unit (901) controls the 1st station paper splicing work platform (401) or the 2nd station paper splicing work platform (402) to descend; 5) Pushing out the paper. After the 1-station paper receiving work platform (401) or the 2-station paper receiving work platform (402) is lowered into place, the platform position detection electric eye (408) feeds back a signal to the PLC logic control unit (901), which controls the push fork cylinder (601) in the 1-station system working unit (906) or the 2-station system working unit (907) to drive the push fork (6) to push the sheet packaging paper shell stack onto the discharge workbench (5); 6) Reset operation: After the 1st station paper receiving work platform (401) or the 2nd station paper receiving work platform (402) quickly rises and resets, the paper stopper (7) is retracted, and the sheet packaging paper enters the 1st station paper receiving work platform (401) or the 2nd station paper receiving work platform (402), completing a cycle of counting, sorting and stacking. The reciprocating operation achieves the function of automatic stacking.

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