CN219098315U - Automatic folding paper stacking device - Google Patents

Abstract

The utility model discloses an automatic folding paper stacking device, which comprises a frame, a paper feeding mechanism, a bearing mechanism and a paper pressing mechanism, wherein the paper feeding mechanism, the bearing mechanism and the paper pressing mechanism are arranged on the frame, and the paper feeding mechanism is used for conveying folded paper along the folding width direction; the bearing mechanism is arranged at the downstream of the paper feeding mechanism and is used for piling the folded paper conveyed by the paper feeding mechanism; the paper pressing mechanism is positioned at the downstream of the paper feeding mechanism and above the bearing mechanism, and is separated from the bearing platform of the bearing mechanism or the bearing folded paper in the current paper feeding process of the paper feeding mechanism, so that a stacking channel of the current paper feeding on the bearing mechanism is reserved; when the paper feeding mechanism finishes the front paper feeding, the paper pressing mechanism contacts with a bearing platform of the bearing mechanism or the bearing folded paper to press the folded paper currently stacked on the bearing mechanism. The utility model can realize automatic, efficient and standard stacking treatment of folded paper, and has high stacking quality.

Description

Automatic folding paper stacking device

Technical Field

The utility model relates to paper folding equipment (such as a picture folding machine), in particular to a device for automatically stacking folded paper sheets in sequence.

Background

In the literature or graphic management industry, a paper folding operation (i.e. a folding operation) for folding large-format paper (such as engineering drawings) is involved, so as to meet the technical requirements of later binding and archiving. With the advancement of technology, the folding of paper is currently mainly implemented by a high-efficiency folder (i.e., a folder, hereinafter collectively referred to as a folder).

Currently, in the conventional printing apparatuses on the market, there is a lack of an apparatus for automatically stacking (i.e., stacking) folded sheets output from a folder, which cannot realize automatic stacking storage of a large capacity. This is because the folded sheet output from the folder is in a free, loose state (i.e., fluffy state) lacking in pressing force, and although there are obvious folds, the pages on both sides of each fold are in a relatively fluffy state, which is most prominent especially in a web structure of a large format drawing before entering the folder, the web itself has a certain curvature, the curvature after folding is obvious, and especially the partial curvature at the tail of folding is the largest. Therefore, the relatively fluffy front and back sequentially folded paper is stacked at the paper outlet of the paper folding machine, and the following technical problems are easy to occur:

1. The folded paper sheets stacked together are poor in stability, so that the stacking and forming of the high-capacity folded paper sheets are not facilitated;

2. in the stacking process of the folded paper sheets in the back sequence, the folded paper sheets in the front sequence are easy to be unfolded, rolled inwards, folded and/or the like to influence the mess phenomenon of subsequent treatment due to the propping force or friction force acted on the relatively fluffy folded paper sheets in the front sequence;

3. in the stacking process, the folded paper sheets in the back sequence are easily inserted into the fluffy pages of the folded paper sheets in the front sequence, so that the folded paper sheets in the front sequence and the back sequence are nested together, and the technical requirement of the standard sequence of the folded paper sheets in the subsequent treatment is affected.

This is most common in stacking operations after the fan-fold (i.e., the longitudinal fold, first fold) of large format sheets is completed. This is because:

on one hand, the folded paper formed by fan-shaped folding is not transversely folded, and the length of the folded paper is longer;

on the two hand, some engineering drawings have lengths of several meters, and the number of folding layers after fan-shaped folding is large, the thickness is large, and the fluffy state is obvious;

the paper folding machine folds paper in an instantaneous extrusion mode, the extrusion action time is short, the crease shaping effect is poor, and the fluffy state after extrusion and release is obvious;

In the fourth aspect, the paper folding machine outputs the folded paper after fan-shaped folding along the folding width direction (namely, the length direction of the folded paper is along the length direction of the paper outlet) when the paper is discharged.

In this way, in the front and rear sequential stacking process of the folded paper with large size and length along the folding width direction, the technical problems of disordered stacking sequence, unstable stacking and the like are very easy to occur based on the fluffy state of the folded paper.

In summary, the paper folding machine lacks a device for automatically stacking folded paper, and the output folded paper cannot be automatically stacked and stored in a large capacity. The current conventional treatment technology measures are two:

firstly, setting a post worker, manually removing the folded paper after outputting one or a few folded papers by a paper folding machine, and stacking the folded papers in sequence by a manual mode at other places so as to meet the technical requirements of subsequent binding or further paper folding;

secondly, setting a post worker, manually and successively sorting and compacting after each piece of folded paper is output by the paper folding machine, and manually stacking at a paper outlet in sequence.

It follows that the current conventional technical measures for stacking folded sheets require a constant manual intervention. Not only does this greatly increase the paper folding cost; moreover, due to the high efficiency and the continuous paper folding of the paper folding machine, the manual work is difficult to adapt to the high-speed output of folded paper of the paper folding machine, and the error probability is high.

Disclosure of Invention

The technical purpose of the utility model is that: aiming at the particularity of the folded paper stacking and the defects of the prior art, the stacking device capable of realizing automatic, efficient and standard stacking treatment of the folded paper is provided.

The technical aim of the utility model is achieved by the following technical scheme that the automatic folding paper stacking device comprises a frame, a paper feeding mechanism and a bearing mechanism;

the paper feeding mechanism is arranged on the frame and used for conveying folded paper along the folding width direction;

the bearing mechanism is arranged on the frame and is positioned at the downstream of the paper feeding mechanism and used for piling up the folded paper conveyed by the paper feeding mechanism;

the stacking device also comprises a paper pressing mechanism;

the paper pressing mechanism is arranged on the frame and is positioned at the downstream of the paper feeding mechanism and above the bearing mechanism;

the paper pressing mechanism is separated from a bearing platform of the bearing mechanism or the bearing folded paper in the current paper feeding process of the paper feeding mechanism, and a stacking channel of the current paper feeding on the bearing mechanism is reserved;

when the paper feeding mechanism finishes the front paper feeding, the paper pressing mechanism contacts with the bearing platform of the bearing mechanism or the bearing folded paper to press the folded paper currently stacked on the bearing mechanism.

According to the technical measures, aiming at the specificity that folded paper needs stacking and storage, the paper pressing mechanism is arranged at the lower stream of the paper feeding mechanism and above the bearing mechanism, and the paper pressing action of the paper pressing mechanism is linked with the paper feeding action of the paper feeding mechanism, so that the folded paper stacked on the bearing mechanism can be automatically beaten and compacted through the paper pressing mechanism without manual intervention under the condition that paper feeding and entering folded paper stacking on the bearing mechanism are not affected. The front-order folded paper is tightly beaten and compacted by the paper pressing mechanism, so that on one hand, the crease of the folded paper is kept and deepened; the two aspects are that at the entering of back order folding paper, fall and put the moment, effectively reduced the fluffy state of preceding order folding paper, make back order folding paper can be in order, reliably fall on preceding order folding paper, basically avoid preceding, back order folding paper to take place the mess phenomenon at the stack in-process, improved the stacking quality of folding paper, the normalization is good to in favor of subsequent handling. Meanwhile, the folded paper sheets stacked together are tightly beaten and compacted by the paper pressing mechanism, so that the stability is good, the stacking and forming of the high-capacity folded paper sheets are facilitated, and the stacking efficiency is high.

Therefore, the stacking device adopting the technical measures can realize automatic, efficient and standard stacking treatment of folded paper, further replace post workers, improve stacking quality, reduce paper folding cost, reliably adapt to high-speed paper output of the paper folding machine when the paper folding machine is connected, and have high stacking efficiency and good standardization.

As one of the preferable schemes, the paper pressing mechanism mainly comprises a plurality of groups of paper beating components and paper beating driving components;

the paper beating components are arranged at intervals along the length direction of the paper inlet of the paper feeding mechanism, each paper beating component is assembled on a supporting beam through a rotating shaft in a rotatable structure, and the supporting beam is fixed on the frame along the length direction of the paper inlet of the paper feeding mechanism;

each group of paper beating driving components is used for driving at least one group of paper beating components to generate rotary motion;

the paper beating assembly rotates to be separated from/contacted with the bearing platform of the bearing mechanism or the carried folded paper under the driving of the corresponding paper beating driving assembly.

According to the paper pressing mechanism adopting the technical measures, the plurality of groups of paper beating components distributed at intervals along the length direction of the paper inlet can be reliably adapted to beating and compacting folded paper with different folding lengths, and the application range is wide.

Meanwhile, the paper pressing mechanism adopting the technical measures is formed on the frame through a rotary action structure, has a compact arrangement structure and small occupied space, and is beneficial to the compactness of the whole structure of the stacking device. Meanwhile, the rotary action structure is used for tightly beating and compacting the folded paper stacked on the bearing mechanism, compared with the vertical displacement structure, the noise in the action process is small, and the force applied to the folded paper is softer, so that the folded paper is protected from impact damage.

Further, the paper beating components of the paper pressing mechanism are divided into a left paper beating unit and a right paper beating unit corresponding to the length direction of the paper inlet of the paper feeding mechanism;

the rotation direction of each paper beating component of the left paper beating unit is opposite to that of each paper beating component of the right paper beating unit;

and the paper pressing and beating direction of each paper beating component of the left paper beating unit and the paper pressing and beating direction of each paper beating component of the right paper beating unit respectively move outwards around the center.

The paper pressing mechanism of the technical measure is used for forming left and right reverse clapping and compacting acting forces aiming at the specificity of the front and back sequential stacking process of the folded paper with large size and length along the folding width direction, so that the stressed folded paper is tensioned, is smoother, is prevented from creasing and warping, and has good compacting and shaping effects on the folded paper. The compaction acting force in the left and right opposite directions achieves the technical effect of extruding and shaping from the middle to the two ends in the manual paper folding process.

Still further, the paper beating components of the paper pressing mechanism take the center of the paper feeding opening of the paper feeding mechanism in the length direction as the dividing center of the left paper beating unit and the right paper beating unit;

the number and the positions of the paper beating components of the left paper beating unit correspond to those of the paper beating components of the right paper beating unit.

The paper pressing mechanism adopting the technical measures has relatively more balanced left and right force application in the length direction of the folded paper, is favorable for further improving the compaction flatness of the folded paper, and has more remarkable crease-proof and warping-proof effects.

Still further, the paper beating component mainly comprises a rotating shaft, a supporting frame and a soft paper beating head;

the two ends of the rotating shaft are assembled on a front supporting beam and a rear supporting beam through a front bearing assembly and a rear bearing assembly in a rotatable structure, and the front supporting beam and the rear supporting beam are distributed at intervals along the paper feeding depth direction of the paper feeding mechanism;

the support frame is connected to the rotating shaft between the front support beam and the rear support beam;

the soft paper beating head is connected to the outer side of the rotating position of the supporting frame and is used as a bearing platform for rotating to separate from/contact with the bearing mechanism or bearing folded paper.

According to the paper beating component adopting the technical measures, the rotating moment of the transmission shaft is converted into the downward pressing moment of the soft paper beating head by the supporting frame with the hard structure, so that the beating and compacting effects on the folded paper piled on the bearing mechanism are good. Meanwhile, the soft paper beating head directly applies force to the folded paper, so that the moment can be kept long-acting without damaging the folded paper, that is, the folded paper is compacted with a larger moment and protected from damage, and the folded paper is not interfered with, so that the folded paper can be reliably beaten and compacted under the condition of protecting the folded paper from damage, and the compacting and shaping effects of the folded paper are good.

Furthermore, the soft paper beating head is of a flexible and deformable strip-shaped plate structure or a row brush structure. According to the paper beating component adopting the technical measure, the soft paper beating head is used for beating and compacting along the folding width direction of the folded paper, so that the folded paper is formed to be greatly beaten and compacted along the folding width direction, and the compacting and shaping effects are obvious. Meanwhile, when the length of the soft paper beating head can be adapted to the folding width of the large-size folding paper, the paper beating assembly can be suitable for other folding papers with various widths smaller than the large-size folding paper, and the universality is good.

As one of the preferable schemes, the paper beating driving assembly mainly comprises a driving motor II, a driving synchronous pulley II, a driven synchronous pulley II and a synchronous belt II;

the second driving motor is fixed on the supporting beam, and an output shaft of the second driving motor is connected with the second driving synchronous belt pulley;

the driven synchronous belt pulley II is connected to the rotating shaft of the corresponding paper beating assembly, is positioned on the same side with the driving synchronous belt pulley II and corresponds to the driving synchronous belt pulley II;

and the second synchronous belt is tightly sleeved on the second driving synchronous belt pulley and the second driven synchronous belt pulley.

The paper beating driving assembly adopting the technical measures is beneficial to the compactness and the miniaturization of the whole paper pressing mechanism while maintaining high-precision transmission, namely, the driving motor can be arranged in the gap between the paper beating assemblies. And be favorable to a driving motor to pass through a pair of hold-in range and synchronous drive multiunit clapping paper subassembly, of course, this needs to be equipped with the driven synchronous pulley that is in same pair hold-in range driving range on these clapping paper subassembly's the axis of rotation respectively, and then is favorable to reasonable simplification platen mechanism's shaping structure.

As one of the preferable schemes, the bearing platform of the bearing mechanism is a lifting structure, and the bearing platform gradually descends from top to bottom through the thickness of stacked folded paper sheets in the continuous paper feeding process;

The bearing mechanism mainly comprises a bearing platform, two groups of lifting assemblies and a lifting driving assembly;

the bearing platform is horizontally distributed along the length direction of the paper inlet of the paper feeding mechanism in the length direction, and two ends of the bearing platform in the length direction are correspondingly connected with the two groups of lifting components;

the lifting assembly mainly comprises a transmission screw rod, a screw rod nut and at least one guide shaft;

the transmission screw rod is vertically assembled at the corresponding position of the frame through an upper bearing assembly and a lower bearing assembly;

the inner hole of the screw nut is connected with the transmission screw rod in a threaded structure, and the screw nut is fixedly connected with the corresponding end part of the bearing platform;

the guide shaft is vertically fixed at a corresponding position of the frame, is distributed with the transmission screw rod at intervals in the width direction of the bearing platform, and is movably connected with a corresponding end part of the bearing platform through a linear bearing;

the lifting driving assembly is used for driving a transmission screw rod of the lifting assembly to generate a rotation action;

under the drive of the lifting driving components, the two groups of lifting components synchronously rotate to drive the bearing platform to generate horizontal lifting/descending actions.

The bearing mechanism of the technical measure can be reliably suitable for stacking and forming of large-capacity folded paper. That is, the bearing mechanism descends along with the stacking thickness of the folded paper sheets so as to meet the stacking space of the subsequent folded paper sheets, and meanwhile, the paper feeding stacking of each folded paper sheet is ensured to be in the range of travel of the paper pressing mechanism, and further the stacking quality is ensured.

In addition, the lifting components of the bearing mechanism adopting the technical measures are distributed corresponding to the two sides of the frame, so that the whole structure is compact, and the occupied space is small.

Further, the lifting driving assembly mainly comprises a driving motor I, a driving synchronous pulley I, two driven synchronous pulleys I and a synchronous belt I;

the first driving motor is fixed on the frame, and an output shaft of the first driving motor is connected with the first driving synchronous belt pulley;

the first driven synchronous pulleys are correspondingly connected to the transmission lead screws of the two groups of lifting assemblies and correspond to the first driving synchronous pulleys;

the first synchronous belt is tightly sleeved on the first driving synchronous belt pulley and the first driven synchronous belt pulley.

The lifting driving component of the technical measure can ensure the high-precision stable lifting of the bearing platform and prevent the blockage caused by the asynchronous lifting components in the lifting process; the two aspects are beneficial to the compact structure and the miniaturization of the whole bearing mechanism.

Further, the bearing mechanism further comprises an auxiliary platform;

the auxiliary platform is connected to one side of the bearing platform, which is opposite to the paper feeding mechanism, in a detachable structure, and the top surface of the auxiliary platform corresponds to the top surface of the bearing platform.

The bearing mechanism adopting the technical measures is beneficial to adapting to stacking of folded paper with different specifications through supplementing the bearing platform by the auxiliary platform, and has good flexibility.

As one of the preferable schemes, the paper feeding speed of the paper feeding mechanism for the current folded paper is divided into a front stage and a rear stage, and the transmission speed of the tail section part of the folded paper in the rear stage is lower than that of the head section part and the middle section part of the folded paper in the front stage. According to the technical measure, through the speed reduction transmission of the paper feeding tail of the current folded paper, the backward play of the folded paper conveyed into the bearing mechanism can be effectively avoided, the stability required by stacking is affected, namely, through the speed reduction transmission of the paper feeding tail of the current folded paper, the free falling of the current folded paper stacked on the bearing mechanism is ensured as much as possible, and the stacking quality is improved by matching with the paper pressing mechanism.

The beneficial technical effects of the utility model are as follows: according to the stacking device adopting the technical measures, aiming at the specificity that folded paper needs stacking and storage, the paper pressing mechanism is arranged at the upper part of the bearing mechanism at the downstream of the paper feeding mechanism, and the paper pressing action of the paper pressing mechanism is linked with the paper feeding action of the paper feeding mechanism, so that the folded paper stacked on the bearing mechanism can be automatically clapped and compacted through the paper pressing mechanism without manual intervention under the condition that paper feeding and entering folded paper stacking on the bearing mechanism are not affected. The front-order folded paper is tightly beaten and compacted by the paper pressing mechanism, so that on one hand, the crease of the folded paper is kept and deepened; the two aspects are that at the entering of back order folding paper, fall and put the moment, effectively reduced the fluffy state of preceding order folding paper, make back order folding paper can be in order, reliably fall on preceding order folding paper, basically avoid preceding, back order folding paper to take place the mess phenomenon at the stack in-process, improved the stacking quality of folding paper, the normalization is good to in favor of subsequent handling. Meanwhile, the folded paper sheets stacked together are tightly beaten and compacted by the paper pressing mechanism, so that the stability is good, the stacking and forming of the high-capacity folded paper sheets are facilitated, and the stacking efficiency is high.

Therefore, the stacking device adopting the technical measures can realize automatic, efficient and standard stacking treatment of folded paper, further replace post workers, improve stacking quality, reduce paper folding cost, reliably adapt to high-speed paper output of the paper folding machine when the paper folding machine is connected, and have high stacking efficiency and good standardization.

It should be noted that when the stacking device of the technical measure is connected with the paper folding machine, the paper feeding mechanism becomes a paper discharging mechanism of the paper folding machine, namely, folded paper output by the paper folding machine is just stacked on the bearing mechanism. Of course, it is not excluded that the paper folding machine keeps an independent paper outlet mechanism, and if so designed, in the on-line process, folded paper output by the paper folding machine through the paper outlet mechanism is transported through the paper feeding mechanism and then stacked on the bearing mechanism. It is thus evident that the stacking device of the above technical measure is matched online with the folder, with the best practical technical effect.

Drawings

Fig. 1 is a schematic structural view of a folded sheet formed by longitudinally folding a single sheet of paper (i.e., a first folding step) in a stacking operation.

Fig. 2 is a schematic structural view of the present utility model.

Fig. 3 is a rear side view of fig. 1.

Fig. 4 is a schematic structural view of the carrying mechanism in fig. 1 and 2.

Fig. 5 is a schematic diagram of a mating structure among the driving screw, the screw nut and the first synchronous pulley in fig. 4.

Fig. 6 is a schematic structural view of the paper pressing mechanism in fig. 1 and 2.

Fig. 7 is a schematic view of a paper beating driving assembly of the paper pressing mechanism in fig. 6.

Fig. 8 is a schematic view of the paper beating assembly in fig. 6.

Fig. 9 is a schematic view of a partial vertical section in fig. 2.

Fig. 10 is a schematic diagram showing an operation process of the platen roller mechanism shown in fig. 6 (an initial state after the platen roller is separated from the folded sheet).

FIG. 11 is a schematic view showing the operation of the platen roller mechanism of FIG. 6 for folding a sheet (the state of pressing after folding the sheet)

The meaning of the symbols in the figures: 1-a frame; 11-left side vertical plate; 12-right side vertical plate; 13-a bottom cross beam;

2-a paper feeding mechanism; 21-a paper feed guide; 22-a lower paper feeding roller; 23-feeding paper to upper roller; 24-driving a motor III; 241-a driving wheel; 25-a transmission belt;

3-a carrying mechanism; 31-a carrying platform; 311-positioning piece; 32-an auxiliary platform; 33-a lifting assembly; 331-a transmission screw; 332—a lead screw nut; 333—a linear bearing; 334—a guide shaft; 335-upper limit piece; 336-lower limit piece; 337-an upper bearing assembly; 338-lower bearing assembly; 34-a lifting drive assembly; 341-a first drive motor; 342-primary synchronous pulley one; 343-driven synchronous pulley one; 344-synchronous belt one; 345-tensioning wheel one;

4-a paper pressing mechanism; 41-front support beam; 42-a rear support beam; 43-a paper beating assembly; 431-rotation axis; 432-a support frame; 433-connecting plates; 434—soft paper head; 44—a paper-beating drive assembly; 441-a second driving motor; 442-a driving synchronous pulley II; 443-a driven synchronous pulley II; 444-synchronous belt two; 445—tensioning wheel two; a, a left paper beating unit; b-right side paper beating unit.

Description of the embodiments

The utility model relates to paper folding equipment (such as a picture folding machine), in particular to a device for automatically stacking folded paper in sequence. Wherein, embodiment 1 is combined with the drawings in the specification, namely, fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10 and fig. 11 to clearly and specifically explain the technical scheme of the utility model; other embodiments, although not drawn separately, may still refer to the drawings of embodiment 1 for its main structure.

It is to be noted here in particular that the figures of the utility model are schematic, which for the sake of clarity have simplified unnecessary details in order to avoid obscuring the technical solutions of the utility model which contribute to the state of the art. In addition, the following orientations of front, rear, left, right, upper, lower, bottom, top, etc. are based on the stacking device being placed upright, and the paper inlet is relatively speaking as the front.

Examples

Referring to fig. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11, the present utility model includes a frame 1, and a paper feeding mechanism 2, a carrying mechanism 3 and a paper pressing mechanism 4 arranged on the frame 1.

Specifically, the frame 1 has left and right side risers 11 and 12 arranged at a pitch. The bottom part between them is connected with a bottom cross beam 13, and the upper area between them is used as the arrangement space of the paper feeding mechanism 2, the bearing mechanism 3 and the paper pressing mechanism 4, and the supporting beam of the paper pressing mechanism 4 described below also forms a supporting structure at the top part between the left side vertical plate 11 and the right side vertical plate 12.

The paper feeding mechanism 2 is assembled at the front side of the upper part of the frame 1, and is used for conveying the folded paper, wherein the conveying direction is along the folding width direction of the folded paper, namely, folds at two sides enter the conveying in sequence from front to back, but not enter the conveying at the same time, so that the length direction of the folded paper (namely, the direction of the ends of the folds) corresponds to the length direction of a paper feeding port of the paper feeding mechanism 2. The paper feed mechanism 2 is mainly composed of a paper feed guide 21, a paper feed lower roller 22, a paper feed upper roller 23, and a paper feed drive assembly.

More specifically, the rear portion of the paper feed guide 21 is engaged with upper and lower paper feed rollers, or is engaged with a carrying mechanism 3 described below through the upper and lower paper feed rollers. The front part of the paper feed guide 21 is formed on the front side of the upper and lower paper feed rollers.

The roller shafts of the lower paper feed roller 22 are rotatably arranged at both ends thereof below the paper feed guide 21 by bearing assemblies. In the axial direction of the roller shaft of the paper feeding lower roller 22, a plurality of rollers which are distributed at intervals are arranged in a penetrating manner, and the periphery of each roller is provided with a flexible friction increasing structure. The radius of each roller of the lower paper feed roller 22 is slightly larger than the linear distance between the roller shaft and the top surface of the paper feed guide plate 21, so that each roller of the lower paper feed roller 22 passes through the paper feed guide plate 21 and slightly protrudes at the top surface of the paper feed guide plate 21, and needs to be flexibly contacted with the upper paper feed roller 23 or matched with a micro clearance smaller than the thickness of paper feed at the top surface of the paper feed guide plate 21.

The roller shaft of the upper paper feed roller 23 is rotatably arranged at both ends thereof above the paper feed guide 21 by bearing assemblies. The rollers of the upper paper feeding roller 23 are axially penetrated with a plurality of rollers which are distributed at intervals, and the periphery of each roller is provided with a flexible friction increasing structure, and of course, each roller of the upper paper feeding roller 23 is in one-to-one corresponding matching relationship with each roller of the lower paper feeding roller 22.

The upper and lower rollers of the paper feed are in one-to-one correspondence with each other, and a flexible contact fit or a micro clearance fit smaller than the thickness of the paper feed is formed at the top surface of the paper feed guide 21. In the present embodiment, the upper paper feed roller 23 is used as an active rotation roller.

The paper feeding driving assembly mainly comprises a driving motor III 24, a driving wheel 241, a driving belt 25 and a driven wheel. The driving motor III 24 avoids the functional structures of a paper inlet and other mechanisms and is fixed on the frame 1; the output shaft of the third driving motor 24 is connected with the driving wheel 241. The driven wheel is connected to the roller shaft of the upper paper feed roller 23 and corresponds to the driving wheel 241. The transmission belt 25 is tightly sleeved between the driving wheel 241 and the driven wheel, and serves to transmit the driving force of the driving motor three 24 to the paper feeding upper roller 23.

In the above paper feeding driving assembly, the driving motor three 24 needs to stably transmit the driving force to the paper feeding upper roller 23 to ensure that the paper feeding process is reliable and continuous and avoid the paper feeding upper roller 23 from slipping, so the driving belt 25 is preferably a synchronous belt, and the driving wheel 241 and the driven wheel are respectively synchronous belt wheel structures.

In order to control the accurate operation of the paper feeding driving assembly, a paper head position sensor and a paper tail position sensor are arranged at the bottom side or the inside of the paper feeding guide plate 21, even at the adjacent side of the paper feeding guide plate 21, and the paper head position sensor is arranged at the front side compared with the paper tail position sensor. The paper head position sensor is used for detecting the paper feeding paper head end position of the folded paper, and the controller controls the driving motor III 24 to start through a detection signal. The paper tail position sensor is used for detecting the position of the paper feeding tail end of the folded paper, the controller controls the driving motor III 24 to run down through detection signals so as to prevent the folded paper conveyed into the bearing mechanism 3 from being moved back and affecting the stability required by stacking, and ensures that the driving motor III 24 is controlled to stop after the folded paper is conveyed according to the travel distance, so that the current folded paper stacked on the bearing mechanism is ensured to basically realize free falling as much as possible, and the stacking quality is improved by matching with the paper pressing mechanism. That is, by the foregoing control, the paper feed mechanism 2 divides the paper feed speed of the current folded paper into two stages of front and rear transfer control, and the speed of transferring the tail section portion of the folded paper in the rear transfer control stage is significantly lower than the speed of transferring the head section portion and the middle section portion (i.e., the main body portion) of the folded paper in the front transfer control stage, and the slower the transfer speed in the rear transfer control stage, the smoother the stacking of the current folded paper on the carrying mechanism, and the better the alignment effect. Of course, the slow transmission speed of the post-transmission control stage is based on the premise of the fast transmission of the pre-transmission control stage and the effective transmission of the current folded paper into the bearing mechanism, if the transmission speed is too slow, the current folded paper cannot enter the bearing mechanism, and if the transmission speed is too fast, the folded paper entering the bearing mechanism is easy to generate inertia channeling, so that the slow refers to that the current folded paper falls into the bearing mechanism at a proper speed.

The carrying mechanism 3 is mounted at the rear side of the upper portion of the frame 1 downstream of the conveyance direction of the above-mentioned sheet feeding mechanism 2, and serves to stack the folded sheets conveyed by the above-mentioned sheet feeding mechanism 2. The bearing platform 31 of the bearing mechanism 3 is of a lifting structure so as to meet the stacking and forming technical requirements of high-capacity folded paper. The bearing mechanism 3 mainly comprises a bearing platform 31, two groups of lifting assemblies 33 and a lifting driving assembly 34.

More specifically, the carrying platform 31 is horizontally arranged along the length direction of the paper inlet of the paper feeding mechanism 2 in the length direction, and the top surface of the carrying platform is flat. The length of the carrying platform 31 is greater than the effective length of the paper inlet of the paper feeding mechanism 2, the width of the carrying platform 31 is slightly greater than the effective width of the conventional folded paper, and in summary, the effective carrying area of the carrying platform 31 should preferably be greater than the fan-shaped folded area of the conventional folded paper with large specification (for example, A0) so as to enhance the applicability thereof. The two ends of the bearing platform 31 in the length direction are respectively provided with a positioning piece 311 connected with the corresponding lifting assembly.

The two sets of lifting assemblies 33 are identical in construction. The two groups of lifting components 33 are vertically arranged at the inner sides of the vertical plates at the left side and the right side of the frame and are positioned outside the coverage range of the effective length of the paper inlet of the paper feeding mechanism 2.

The structure of one of the lift assemblies 33 will be described in detail below. The lifting assembly 33 mainly comprises a transmission screw 331, a screw nut 332, two guide shafts 334, an upper limiting piece 335 and a lower limiting piece 336.

The upper stopper 335 is fixed to the structure of the frame 1 at a position close to the corresponding vertical plate, and the structure of the frame 1 may be the corresponding vertical plate or a support beam of the platen 4 described below. The upper stopper 335 is provided with a position sensor for detecting the ascending position of the loading platform 31 even on other structures adjacent to the upper stopper so that the controller controls the ascending stroke of the loading platform 31.

The lower stopper 336 is fixed to the structure of the frame 1 at a position close to the corresponding vertical plate, and the structure of the frame 1 may be the corresponding vertical plate or the bottom beam 13. The lower stopper 336 is provided with a position sensor for detecting the lowered position of the load-bearing platform 31 even on other structures adjacent to the lower stopper so that the controller controls the lowering stroke of the load-bearing platform 31.

The upper end of the driving screw 331 is rotatably mounted at the center of the upper stopper 335 through the upper bearing assembly 337. The lower end of the driving screw 331 is rotatably assembled at the center of the lower stopper 338 through the lower bearing assembly 338. In this way, the driving screw 331 is vertically assembled inside the corresponding riser of the frame 1 through the upper and lower sets of bearing assemblies.

The screw nut 332 and the transmission screw 331 are of matched structures, and the inner hole of the screw nut is connected with the transmission screw 331 in a threaded structure. The outer circumference of the screw nut 332 is fixedly connected to the positioning piece 311 at the corresponding end of the carrying platform 31. That is, the rotation of the drive screw 331 is converted into a linear displacement by the screw nut 332.

The two guide shafts 334 are respectively arranged at the front side and the rear side of the transmission screw 331, and are arranged symmetrically by taking the transmission screw 331 as the center. The upper end of each guide shaft 334 is fixed at the corresponding end of the upper limiting piece 337, and the lower end is fixed at the corresponding end of the lower limiting piece 338, so that the guide shafts 334 are vertically fixed at the inner side of the corresponding vertical plate of the frame 1 and are distributed and matched with the transmission screw 331 at intervals in the width direction of the bearing platform 31. The guide shaft 334 passes through the positioning piece 311 at the corresponding end of the bearing platform 31, and is connected with the positioning piece 311 through the linear bearing 333, that is, the linear bearing 333 is fixed at the corresponding end of the positioning piece 311, and the bearing platform 31 can stably lift and displace on the guide shaft 334 through the linear bearing 333.

The lifting drive assembly 34 mainly comprises a first driving motor 341, a first driving synchronous pulley 342, a first two driven synchronous pulleys 343 and a first synchronous belt 344. The first driving motor 341 is fixed on the bottom beam 13 of the frame 1 and is positioned at the center distance between the left lifting assembly 33 and the right lifting assembly 33, and the output shaft of the first driving motor 341 is connected with the first driving synchronous pulley 342. The first driven synchronous pulley 343 corresponds to the left and right lifting assemblies 33, is respectively connected to the bottom of the transmission screw 331 (above the lower limiting member 338) of the lifting assembly 33, and corresponds to the first driving synchronous pulley 342. The first synchronous belt 344 is tightly sleeved on the first driving synchronous pulley 342 and the first driven synchronous pulley 343 through the first tensioning pulley 345. Thus, a driving motor can drive the left and right elevating assemblies 33 to generate synchronous elevating motion, that is, the elevating assemblies 33 are driven by the elevating driving assembly 34 to rotate synchronously to drive the carrying platform 31 to generate horizontal elevating/lowering motion.

The start/stop action of the driving motor 341 of the lifting driving assembly 34 is controlled by the controller through the detection signal of the paper stack thickness detection sensor. The paper stacking thickness detecting sensor is disposed at the paper feeding port or adjacent to the paper feeding port, and is used for detecting the stacking thickness of the stacked folded paper on the carrying platform 31, if the detected stacking thickness of the folded paper affects the upper subsequent stacking space (i.e. the stacking thickness exceeds the set minimum allowable space height), the controller starts the driving motor 341 to drive the carrying platform 31 to descend, and stops when the descending stroke reaches the set maximum allowable space height, so that the carrying platform 31 is gradually lowered from top to bottom through the stacked folding paper thickness in the continuous paper feeding process. When the carrying platform 31 descends to the detection range of the lower limiting member 336, the current stacking is completed, paper feeding is stopped, stacked paper is transferred, and the carrying platform 31 is emptied. After the carrying platform 31 is vacated, the controller starts the driving motor one 341 to drive the carrying platform 31 to rise, and when the carrying platform 31 rises to the detection range of the upper limiting part 335, the carrying platform 31 is reset, and the paper feeding mechanism 2 can continuously feed paper and stack again.

The first driving motor 341 preferably employs a stepping motor or a servo motor, which is advantageous in ensuring control accuracy and improving a relatively constant maintaining effect on the lifting of the carrying platform 31 due to the characteristic of maintaining torque.

In the above-described structure of the carrying mechanism 3, in order to accommodate a larger folded sheet, the work flexibility on the carrying platform 31 is improved, and the auxiliary platform 32 may be connected to the carrying platform 31 in a detachable structure (e.g., a hanging buckle, etc.). The length of the auxiliary platform 32 corresponds to the effective carrying length of the carrying platform 31 (except the positioning member 311), and the width is determined according to the width of the maximum folded paper, i.e. the width of the carrying platform 31 in combination with the width of the auxiliary platform 32 can meet the maximum folded paper width. The auxiliary platform 32 is detachably connected to the side, i.e. the rear side, of the carrying platform 31 opposite to the paper feeding mechanism 2, and the top surface of the auxiliary platform 32 is flat and is in substantially flush fit with the top surface of the carrying platform 31.

The paper pressing mechanism 4 is installed at the rear side of the upper part of the frame 1, downstream of the conveying direction of the paper feeding mechanism 2, and above the carrying mechanism 3, and serves as a folded paper for each stack of folded paper stacked on the carrying mechanism 3 to be transferred by beating and compacting. The platen 4 is mainly composed of a front support beam 41, a rear support beam 42, a plurality of sets of paper beating components 43, and a plurality of sets of paper beating drive components 44.

More specifically, the front support beam 41 and the rear support beam 42 serve as a load-bearing basis for the plurality of sets of paper beating components 43, which are arranged at intervals along the paper feed depth direction of the paper feed mechanism 2, the arrangement intervals satisfying the paper beating widths of the paper beating components 43. The front support beam 41 and the rear support beam 42 are respectively fixed to the frame 1, that is, to the left and right uprights of the frame 1, along the longitudinal direction of the paper feed port of the paper feed mechanism 2, and the left and right uprights 11 and 12 are supported at the top of the frame 1.

The plurality of sets of paper beating components 43 are arranged in a pitch manner along the length direction of the paper feed opening of the paper feed mechanism 2, and in this embodiment, the paper beating components 43 are eight sets arranged substantially at equal intervals. These sheet beating members 43 are divided into left and right sheet beating units, i.e., left and right sheet beating units a and B, corresponding to the center of the sheet feeding port of the sheet feeding mechanism 2 in the longitudinal direction. The left paper-beating unit a and the right paper-beating unit B are divided because the rotation direction of each paper-beating assembly 43 of the left paper-beating unit a is opposite to the rotation direction of each paper-beating assembly 43 of the right paper-beating unit B to form a paper-beating and pressing action moving outwards from the center. That is, the pressing and paper beating direction of each paper beating component 43 of the left paper beating unit a and the pressing and paper beating direction of each paper beating component 43 of the right paper beating unit B are respectively moved outwards with the center, so that the tightly-beaten folded paper is leveled and stretched, the compaction effect is ensured, the other end of the folded paper is prevented from tilting and deforming when the paper beating is pressed downwards from a single direction, and the creasing and deforming of the folded paper pressed towards the center due to the outward and inward movements of the two sides are also prevented.

The division between the left paper beating unit a and the right paper beating unit B basically takes the length direction of the paper inlet of the paper feeding mechanism 2 as the center, and the number and the positions of the paper beating components 43 of the left paper beating unit a correspond to the number and the positions of the paper beating components 43 of the right paper beating unit B, so that the left and right symmetrical coordination is basically formed. In combination with the above embodiment, eight sets of paper beating components 43 are provided, so that the left paper beating unit a has four sets of paper beating components 43 arranged at intervals, and the right paper beating unit B has four sets of paper beating components 43 arranged at intervals. The paper beating members 43 of the left paper beating unit a and the right paper beating unit B are identical in structure except that the rotation directions are opposite.

Taking one set of paper beating components 43 as an example, and taking two sets of paper beating components 43 driven by one set of paper beating driving components 44 in combination with the present embodiment as an example, the structure of the paper beating components 43 and the structure of the paper beating driving components 44 will be described in detail.

The paper beating assembly 43 mainly comprises a rotating shaft 431, a supporting frame 432 and a soft paper beating head 434. The two ends of the rotation shaft 431 are rotatably mounted on the front support beam 41 and the rear support beam 42 through two sets of front and rear bearing assemblies, and are located above the bearing platform 31 of the bearing mechanism 3 and above the paper feed port of the paper feed mechanism 2.

The support 432 is a rigid flat plate structure. For example, the support 432 is provided with a plurality of lightening holes. The width of the support frame 432 is smaller than the arrangement interval between the front support beam 41 and the rear support beam 42. One side of the support frame 432, i.e., the rotation center side, is fixedly connected to the rotation shaft 431, and is located on the rotation shaft 431 between the front support beam 41 and the rear support beam 42.

The soft paper head 434 is a flexible deformable gum bar plate structure (of course, a row brush structure may be used instead). The soft paper beating head 434 is connected to the outer side of the rotating position of the supporting frame 432 by the switching of the connecting plate 433, and serves as the carrying platform 31 or carried folded paper that rotates away from/contacts the carrying mechanism 3 during the paper pressing process. The soft paper beating head 434 is connected to the supporting frame 432 through the connecting plate 433, so that the connection is convenient, the later maintenance is convenient, and the soft paper beating head 434 can be directly connected to the outer side of the rotating position of the supporting frame 432.

In the matching structure of the paper beating assembly 43 and the carrying mechanism 3, the position outside the rotation position of the supporting frame 432 is located above the carrying platform 31 and is not in direct contact with the carrying platform 31 and the carried folded paper. Only the middle lower part of the soft paper beating head 434 is in direct contact with the bearing platform 31 and the bearing folded paper in the rotating process; during the contact process, the folding paper carried by the carrying platform 31 is photographed and compacted by flexible deformation along with resistance, but the compacted folding paper is not crushed.

The paper beating driving assembly 44 mainly comprises a second driving motor 441, a second driving synchronous pulley 442, a second driven synchronous pulley 443 and a second synchronous belt 444. The second driving motor 441 is fixed to the rear side of the front support beam 41, and is located above the current position between the two sets of paper beating components 43, and an output shaft of the second driving motor 441 extends from the front side of the front support beam 41 and is connected to the second driving synchronous pulley 442. The two driven synchronous pulleys II 443 correspond to the two paper beating modules 43 at the current position, are correspondingly connected with the end parts of the rotating shafts 431 of the two paper beating modules 43 at the current position, which extend out of the front supporting beam 41, and correspond to the driving synchronous pulleys II 442. The second synchronous belt 444 is tightly sleeved on the second driving synchronous pulley 442 and the second driven synchronous pulley 443 through the second tensioning wheel 445. Thus, one set of paper beating driving components 44 can drive two sets of paper beating components 43 to generate rotation motion.

In combination with the above-mentioned left paper-beating unit a, there are four sets of paper-beating components 43, so that the left paper-beating unit a has two sets of paper-beating driving components 44, and the actions of these two sets of paper-beating driving components 44 should be synchronized. Similarly, if there are four sets of paper beating components 43 in the right paper beating unit B, then there are two sets of paper beating driving components 44 in the right paper beating unit B, and the actions of these two sets of paper beating driving components 44 should be synchronized. Meanwhile, the two sets of paper beating driving components 44 of the left paper beating unit a should also be synchronized with the two sets of paper beating driving components 44 of the right paper beating unit B.

In the above-mentioned platen mechanism 4, in order to improve the rapid response of the rotation of the paper beating assembly 43 and reduce unnecessary rotation strokes, each set of paper beating assembly 43 is lifted up, reset and pressed down, so that an arc movement track is formed, and no circumferential rotation is required. In this way, a position sensor for detecting the driving stroke of the paper beating driving unit 44 is provided on the front side of the front support beam 41, and the position sensor may detect the rotation arc length of the driving and driven synchronous pulleys, or detect the rotation stroke of the synchronous belt, and feed back the detection signal to the controller, and the controller lifts and pushes down the driven paper beating unit 43 by controlling the forward and reverse rotation of the driving motor two 441, that is, the currently driven paper beating unit 43 is rotated to be separated from/contact with the carrying platform 31 of the carrying mechanism 3 or the carried folded paper under the driving of the corresponding paper beating driving unit 44. Compared with the circumferential rotation, the non-circumferential radian movement track has longer beat action time of the paper beating component on the folded paper under the same condition, and is more beneficial to compacting and shaping the folded paper; meanwhile, the motion space of the paper beating component is effectively reduced by the non-circumferential radian motion track, compact and reasonable arrangement of the driving motor is facilitated, and compact and miniaturized structure of the whole paper pressing mechanism is facilitated.

The second driving motor 441 preferably employs a stepping motor or a servo motor, and the characteristic of maintaining torque is beneficial to ensuring control accuracy and improving relatively constant compacting effect on folded paper.

As can be seen from the above structure, the actions of the paper feeding mechanism 2, the carrying mechanism 3 and the paper pressing mechanism 4 on the frame 1 are controlled by the controller according to the detection signals of the corresponding sensors, and the actions of the paper feeding mechanism 2, the carrying mechanism 3 and the paper pressing mechanism 4 are linked under the coordination of the controller. Specifically, the top surface of the carrying platform 31 or the carried folded paper stack of the carrying mechanism 3 is provided with a position at the paper inlet, so as to ensure that the folded paper input by the paper inlet is stably stacked on the top surface of the carrying platform 31 or the carried folded paper. The paper pressing mechanism 4 is separated from the bearing platform 31 of the bearing mechanism 3 or the bearing folded paper in the current paper feeding process of the paper feeding mechanism 2, namely the paper beating component 43 is lifted upwards, and a channel for stacking the current paper feeding on the bearing platform 31 through a paper feeding port is reserved; when the paper feeding mechanism 2 finishes the front paper feeding, the paper beating component 43 presses downwards to contact with the bearing platform 31 of the bearing mechanism 3 or the bearing folded paper, so as to press the folded paper currently piled on the bearing mechanism 3. With the increase of the stacking height of the folded sheets on the carrying platform 31 and the subsequent requirement of continuous stacking, the carrying platform 31 is gradually lowered from top to bottom through the thickness of stacked folded sheets in the continuous feeding process, so as to adapt to the stacking with large capacity.

As shown in fig. 1, the stacking device of the utility model is mainly suitable for stacking operation of large-format paper after fan-shaped folding, and in practical application, the stacking device can be connected with a paper folding machine, so that the paper folding machine is responsible for fan-shaped folding of the large-format paper, and the stacking device is responsible for stacking the fan-shaped folded paper, and is automatically and reliably suitable for high-speed paper output of the paper folding machine. When the stacking device is connected with the paper folding machine, the paper feeding mechanism is the paper discharging mechanism of the paper folding machine, and of course, the paper discharging mechanism of the paper folding machine and the paper feeding mechanism of the stacking device are separated and independently formed, but the whole structure of the connection is complex and the volume is unnecessarily increased.

The stacking apparatus of the present utility model is applicable to stacking fan-folded sheets, and is also theoretically applicable to stacking transversely folded sheets (i.e., folded sheets after fan-folding, refolded in the width direction and in the longitudinal direction, and subjected to a second folding step).

Examples

Other contents of this embodiment are the same as embodiment 1, except that:

the paper beating components of the paper beating unit on the left side share the same paper beating driving component, namely driven synchronous pulleys connected with the rotating shafts of the paper beating components are sleeved on the same synchronous belt together, and a plurality of tensioning wheels are needed to tension the synchronous belt at different positions so as to ensure synchronous driving;

Similarly, the paper beating components of the paper beating unit on the right side share the same paper beating driving component, namely the driven synchronous pulleys connected with the rotating shafts of the paper beating components are sleeved on the same synchronous belt together, and a plurality of tensioning pulleys are needed to tension the synchronous belt at different positions so as to ensure synchronous driving.

This embodiment is advantageous in ensuring the synchronicity of the respective sheet members of the left-side sheet-beating unit and/or the right-side sheet-beating unit as compared with embodiment 1. However, a high-power drive motor is required and the structural complexity of the timing belt tensioning set is increased. Therefore, the embodiment 1 has a simpler and more reasonable design of driving two (or three) sets of paper beating components simultaneously by one set of paper beating driving components, and the synchronism can be realized by controlling the start/stop actions and the driving strokes of the driving motors.

Examples

Other contents of this embodiment are the same as embodiment 1, except that:

the bearing mechanism is of a fixed height structure which is not lifted, and a bearing platform of the bearing mechanism is matched with a paper inlet of the paper feeding mechanism in a large height difference manner so as to reserve a stacking space;

in the paper pressing mechanism, the coverage range of the rotation track of the support frame of the paper beating component is maximally positioned at the paper inlet of the paper feeding mechanism; the flexible paper beating head of the paper beating component has a rotating track coverage range, and generates position interference with a bearing platform of the bearing mechanism, namely, the length between the outer side of the flexible paper beating head and the root is longer, and the deformable space with the length range is used as a stacking space for folding paper.

In this embodiment, the stacking space of the folded sheets on the carrying platform is formed by the length deformable range of the flexible paper beating head of the paper beating assembly, and although a certain stacking effect can be achieved, the stacking capacity is limited. In addition, the overlong soft paper beating head is tightly beaten due to the overlarge flexible deformation range, and the compaction effect is poor.

Examples

Other contents of this embodiment are the same as embodiment 1, except that:

the upper and lower straight line displacement structures of each paper beating component of the paper pressing mechanism are assembled on the front and rear supporting beams;

the paper beating driving assembly of the paper pressing mechanism consists of air cylinders and connecting rods, the connecting rods are connected in series with shaft rods of the paper beating assemblies, the air cylinders are fixed at the top of the frame and connected with the connecting rods, and the shaft rods of the paper beating assemblies are driven to ascend and descend in sliding grooves of the front supporting beam and the rear supporting beam through the connecting rods in the rectilinear motion process of the air cylinders.

This embodiment can be realized in theory, but it is prone to impact damage to the folded sheet, and is also disadvantageous in that the compacted folded sheet remains flat and has a loud impact noise.

Examples

Other contents of this embodiment are the same as embodiment 1, except that:

the paper feeding mechanism conveys and feeds the current folded paper at a constant speed, and the conveying speed is controlled to be that the current folded paper stably and effectively enters the bearing mechanism.

The above examples are only intended to illustrate the present utility model, not to limit it.

Although the utility model has been described in detail with reference to the above embodiments, it will be understood by those of ordinary skill in the art that: the above embodiments may be modified or some of the technical features may be replaced equally, for example, the number of paper beating components and/or paper beating driving components of the paper pressing mechanism may be other, and for example, the lifting structure of the bearing mechanism may be an electric push rod arranged centrally; such modifications and substitutions do not depart from the spirit and scope of the utility model.

Claims (10)

1. An automatic folding paper stacking device comprises a frame (1), a paper feeding mechanism (2) and a bearing mechanism (3);

the paper feeding mechanism (2) is arranged on the frame (1) and is used for conveying folded paper along the folding width direction;

the bearing mechanism (3) is arranged on the frame (1) and is positioned at the downstream of the paper feeding mechanism (2) and used for piling up the folded paper conveyed by the paper feeding mechanism (2);

the method is characterized in that:

the stacking device also comprises a paper pressing mechanism (4);

The paper pressing mechanism (4) is arranged on the frame (1) and is positioned at the downstream of the paper feeding mechanism (2) and above the bearing mechanism (3);

the paper pressing mechanism (4) is separated from a bearing platform (31) of the bearing mechanism (3) or the bearing folded paper in the current paper feeding process of the paper feeding mechanism (2), and a stacking channel of the current paper feeding on the bearing mechanism (3) is reserved;

when the paper feeding mechanism (2) finishes the front paper feeding, the paper pressing mechanism (4) contacts with a bearing platform (31) of the bearing mechanism (3) or the bearing folded paper to press the folded paper which is currently piled on the bearing mechanism (3).

2. The automatic stacking device for folded sheets as claimed in claim 1, wherein:

the paper pressing mechanism (4) mainly comprises a plurality of groups of paper beating components (43) and paper beating driving components (44);

the paper beating components (43) are distributed at intervals along the length direction of a paper inlet of the paper feeding mechanism (2), each paper beating component (43) is assembled on a supporting beam through a rotating shaft (431) in a rotatable structure, and the supporting beam is fixed on the frame (1) along the length direction of the paper inlet of the paper feeding mechanism (2);

Each set of paper beating driving components (44) is used for driving at least one set of paper beating components (43) to generate rotary motion;

the paper beating assembly (43) is driven by the corresponding paper beating driving assembly (44) to rotate to be separated from/contacted with the bearing platform (31) of the bearing mechanism (3) or the carried folded paper.

3. The automatic stacking device for folded sheets as claimed in claim 2, wherein:

the paper beating components (43) of the paper pressing mechanism (4) are divided into a left paper beating unit and a right paper beating unit corresponding to the length direction of a paper inlet of the paper feeding mechanism (2);

the rotation direction of each paper beating component (43) of the left paper beating unit (A) is opposite to the rotation direction of each paper beating component (43) of the right paper beating unit (B);

the pressing and paper beating direction of each paper beating component (43) of the left paper beating unit (A) and the pressing and paper beating direction of each paper beating component (43) of the right paper beating unit (B) respectively move outwards around the center.

4. A folded sheet automatic stacking apparatus according to claim 2 or 3, wherein:

the paper beating component (43) mainly comprises a rotating shaft (431), a supporting frame (432) and a soft paper beating head (434);

The two ends of the rotating shaft (431) are assembled on a front supporting beam (41) and a rear supporting beam (42) through a front bearing assembly and a rear bearing assembly in a rotatable structure, and the front supporting beam (41) and the rear supporting beam (42) are distributed at intervals along the paper feeding depth direction of the paper feeding mechanism (2);

-said support frame (432) is connected to said rotation shaft (431) between said front support beam (41) and said rear support beam (42);

the soft paper beating head (434) is connected to the outer side of the rotating position of the supporting frame (432) and is used as a bearing platform (31) for rotating to be separated from/contacted with the bearing mechanism (3) or bearing folded paper.

5. The automatic stacking device for folded sheets as claimed in claim 4, wherein:

the soft paper beating head (434) is of a flexible and deformable strip-shaped plate structure or a row brush structure.

6. The automatic stacking device for folded sheets as claimed in claim 2, wherein:

the paper beating driving assembly (44) mainly comprises a driving motor II (441), a driving synchronous pulley II (442), a driven synchronous pulley II (443) and a synchronous belt II (444);

the second driving motor (441) is fixed on the supporting beam, and an output shaft of the second driving motor (441) is connected with the second driving synchronous pulley (442);

The driven synchronous pulley II (443) is connected to a rotating shaft (431) of the corresponding paper beating assembly (43), and is positioned on the same side as the driving synchronous pulley II (442) and corresponds to the driving synchronous pulley II;

the second synchronous belt (444) is tightly sleeved on the second driving synchronous belt pulley (442) and the second driven synchronous belt pulley (443).

7. The automatic stacking device for folded sheets as claimed in claim 1, wherein:

the bearing platform (31) of the bearing mechanism (3) is of a lifting structure, and gradually descends from top to bottom through the thickness of stacked folded paper in the continuous paper feeding process;

the bearing mechanism (3) mainly comprises a bearing platform (31), two groups of lifting assemblies (33) and a lifting driving assembly (34);

the bearing platform (31) is horizontally distributed along the length direction of the paper inlet of the paper feeding mechanism (2) in the length direction, and two ends of the bearing platform (31) in the length direction are correspondingly connected with two groups of lifting assemblies (33);

the lifting assembly (33) mainly comprises a transmission screw (331), a screw nut (332) and at least one guide shaft (334);

the transmission screw rod (331) is vertically assembled at the corresponding position of the frame (1) through an upper bearing assembly and a lower bearing assembly;

An inner hole of the screw nut (332) is connected with the transmission screw (331) in a threaded structure, and the screw nut (332) is fixedly connected with the corresponding end part of the bearing platform (31);

the guide shaft (334) is vertically fixed at a corresponding position of the frame (1) and is distributed with the transmission screw rod (331) at intervals in the width direction of the bearing platform (31), and the guide shaft (334) is movably connected with a corresponding end part of the bearing platform (31) through a linear bearing (333);

the lifting driving assembly (34) is used for driving a transmission screw rod (331) of the lifting assembly (33) to generate a rotation action;

under the drive of the lifting driving components (34), the two groups of lifting components (33) synchronously rotate to drive the bearing platform (31) to generate horizontal lifting/descending actions.

8. The automatic stacking device for folded sheets as claimed in claim 7, wherein:

the lifting driving assembly (34) mainly comprises a driving motor I (341), a driving synchronous pulley I (342), two driven synchronous pulleys I (343) and a synchronous belt I (344);

the first driving motor (341) is fixed on the frame (1), and an output shaft of the first driving motor (341) is connected with the first driving synchronous pulley (342);

The two driven synchronous pulleys (343) are correspondingly connected to the transmission lead screws (331) of the two groups of lifting assemblies (33) and correspond to the driving synchronous pulleys (342);

the first synchronous belt (344) is tightly sleeved on the first driving synchronous belt pulley (342) and the first two driven synchronous belt pulleys (343).

9. The automatic stacking device for folded sheets as claimed in claim 7, wherein:

the bearing mechanism (3) further comprises an auxiliary platform (32);

the auxiliary platform (32) is connected to one side of the bearing platform (31) opposite to the paper feeding mechanism (2) in a detachable structure, and the top surface of the auxiliary platform (32) corresponds to the top surface of the bearing platform (31).

10. The automatic stacking device for folded sheets as claimed in claim 1, wherein:

the paper feeding mechanism (2) is divided into a front stage and a rear stage, wherein the conveying speed of the tail section part of the folded paper in the rear stage is lower than that of the head section part and the middle section part of the folded paper in the front stage.

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