Abstract:
A processing device of sheet mediums, in particular, a full-automatic stacking and bundling device of notes and the like. The bundling device mainly comprises a sheet medium stacking mechanism ( 900, 902 ), a bundling mechanism ( 999 ) and a pinching mechanism ( 904 ), the bundling mechanism mainly comprising a paper belt looping mechanism ( 400 ), a hot-pressing and bonding mechanism ( 200 ) and a paper belt cutting-off mechanism. The paper belt looping mechanism comprises a guide groove for guiding the paper belt; the head and the tail of the guide groove are connected to form a conveying loop; an opening ( 4032 ) of the guide groove faces an inner side of the conveying loop; a bottom part ( 4031 ) of the guide groove is provided with a paper-belt inserting port and at least one paper-belt conveying wheel; and an opening end of a side wall of the guide groove is provided with an elastic guide piece ( 408 ) parallel to the bottom part of the guide groove. The stacking and bundling device also comprises a pressing mechanism in bundling and a leveling mechanism after bundling. By means of the invention, the unreliability for forming the loop by the paper belts is effectively solved, the bundling effect is improved, and the notes are bundled tightly and level.

Description:
[0001]    The present application claims the benefit of priority to Chinese Patent Application No. 201110282086.8 titled “SHEET-LIKE MEDIUM STACKING AND BUNDLING DEVICE AND SELF-SERVICE APPARUTUS”, filed with the Chinese State Intellectual Property Office on Sep. 21, 2011, the entire disclosure of which is incorporated herein by reference. 
       FIELD OF THE INVENTION 
       [0002]    The present application relates to a sheet-like medium processing device, and particularly to a full-automatic stacking and bundling device for mediums such as banknotes, papers and cheques. 
       BACKGROUND OF THE INVENTION 
       [0003]    With the development and progress of science and technology, some companies that need to handle large amounts of cash normally use a banknote processing machine to implement some actions, such as inspecting, separating by hundred of sheets and bundling, in which one important aspect is to bundle multiple banknotes stacked tidily to a bundle as required by the bank. Currently, the application of an automated teller machine (ATM) has obvious advantages for solving the above problems, such as reduced workload of the owners of banks, reduced number of the tellers and easy arrangement of banking branches; in addition, since the ATM is on duty for 24 hours, it is convenient for customers. However, the application of a large number of the ATM leads to a huge workload of the machine cleaning service. Now, a cash operating process of the ATM usually is as follow, cash replenishing, customer using, machine cleaning, bundling, storing and cash replenishing of the next day. It can be seen that, the work content for the machine cleaning worker mainly includes opening the ATM, taking out the cash box, opening the cash box, taking out remained banknotes, locking the cash box, recovering the ATM, counting the banknotes, bundling, storing and etc. The purpose of the series of working processes is to take out the banknotes in the ATM and store the banknotes after counting and bundling the banknotes. However, the ATM and the cash box must be opened during the above working processes, which affects the security of the ATM and the cash, and during the counting and bundling processes, the workload is huge, the bundling speed is slow, in addition, the bundled banknotes are easy to be separated when the paper tape is broken, and during the bundling process the finger of the worker is easy to be cut by the paper tape. 
         [0004]    A lot of human labor is required to stack and bundle a large amount of cash, and currently many manual bundling devices are used in the banking system. The bundling machine can refer to ZL02270702.6. The banknote bundling machine is financial machinery and includes a bracket, and inner and outer tracks, a motor, an electric control device, a driving device, a paper sealing device and a pressing device, which are all mounted on the bracket. In this solution, when the paper tape is pulled back and tightened, the inner track needs to be separated from the outer track in advance so as to facilitate tightening the paper tape, and the banknotes are taken out manually after the bundling. The above bundling machine has a high defect rate in loop-forming of the paper tape, which greatly affects the bundling efficiency. In addition, when using the above bundling device the stacked banknotes need to be placed into the bundling device by a bank operation staff manually to be bundled, and the bundled banknotes need to be flattened manually, therefore, it can not solve the problem of huge workload of the bank operation staff effectively. 
       SUMMARY OF THE INVENTION 
       [0005]    In view of this, an object of the present application is to provide a sheet-like medium stacking and bundling device, which can solve an unreliability of loop-forming of a paper tape and improve the bundling effect by means of the bending deformation of the banknotes during the bundling process, wherein via a flattening mechanism, the bundled banknotes are bundled tightly and flattened so as to meet the bank storage requirements. The present application further provides a technical solution to realize automatic separating, stacking and bundling via a self-service apparatus, which can greatly reduce the labor intensity of bank operators and improve work efficiency of the bank. 
         [0006]    The present application provides a sheet-like medium stacking and bundling device, including: 
         [0007]    a sheet-like medium stacking mechanism, adapted to stack and tidy sheet-like mediums conveyed one by one; 
         [0008]    a bundling mechanism, adapted to bundle a whole stack of stacked and tidied sheet-like mediums; and 
         [0009]    a clamping and conveying mechanism, adapted to clamp and convey the whole stack of sheet-like mediums stacked and tidied by the sheet-like medium stacking mechanism to the bundling mechanism to be bundled, and clamp a bundled sheet-like medium bundle out of the bundling mechanism; 
         [0010]    wherein the bundling mechanism includes a paper tape loop-forming mechanism, a heat and pressure bonding mechanism and a paper tape cutting-off mechanism; the paper tape loop-forming mechanism includes a guiding groove for guiding the paper tape, and a head and a tail of the guiding groove are connected to form a conveying loop; the guiding groove includes a bottom portion, an opening corresponding to the bottom portion, and two corresponding groove side walls extending between the bottom portion and the opening, and the opening faces an inner side of the conveying loop; a paper tape inserting port and at least one paper tape conveying wheel are provided at the bottom portion of the guiding groove; the heat and pressure bonding mechanism and the paper tape cutting-off mechanism are located at the bottom portion of the guiding groove closing to the paper tape inserting port; and a guiding member, having elasticity and parallel to the bottom portion of the guiding groove, is provided at an opening end of the groove side walls. 
         [0011]    Preferably, the guiding groove is of an annular track shape. 
         [0012]    Further, there are four paper tape conveying wheels respectively distributed at four corners of the guiding groove having the annular track shape. 
         [0013]    Preferably, the bundling mechanism further includes a pressing mechanism, which is located at a side of the guiding groove opposite to the clamping and conveying mechanism, and includes a pressing tongue and a pressing plate assembly arranged at opposite sides of sheet-like mediums to be bundled respectively; wherein the pressing tongue extends into the guiding groove, a bonding portion of the loop-forming paper tape is clamped between the pressing tongue and the heat and pressure bonding mechanism, and the pressing plate assembly is driven by a crank and connecting rod mechanism to move towards the pressing tongue to perform a pressing action or move away from the pressing tongue to perform a releasing action. 
         [0014]    Further, the pressing plale assembly includes a driving plate driven by a crank and connecting rod mechanism, and an elastic pressing plate is provided on a side of the driving plate facing the pressing tongue. 
         [0015]    Further, the pressing tongue is of a substantially triangular shape, the elastic pressing plate is of a substantially “         ” shape, and the sheet-like mediums between the pressing tongue and the elastic pressing plate are pressed tightly by the pressing tongue and the elastic pressing plate to form deformation. 
         [0016]    Preferably, the bundling mechanism further includes a flattening mechanism, which is located at a side of the guiding groove close to the clamping and conveying mechanism, and includes a supporting mechanism and a flapping mechanism arranged at opposite sides of the sheet-like mediums to be bundled. 
         [0017]    Further, the supporting mechanism is driven by a scissor-type mechanism to form a high position and a low position. 
         [0018]    Further, the flapping mechanism is driven by a crank-slider mechanism to perform reciprocating movement towards the supporting mechanism, so as to flap and flatten the sheet-like mediums. 
         [0019]    The present application also provides a self-service apparatus including a user operating portion, a sheet-like medium receiving portion, a sheet-like medium conveying portion and a sheet-like medium stacking and bundling device, wherein the sheet-like medium stacking and bundling device includes: 
         [0020]    a sheet-like medium stacking mechanism, adapted to stack and tidy sheet-like mediums conveyed one by one; 
         [0021]    a bundling mechaism, adapted to bundle a whole stack of stacked and tidied sheet-like mediums; and 
         [0022]    a clamping and conveying mechanism, adapted to clamp and convey the whole stack of sheet-like mediums stacked and tidied by the sheet-like medium stacking mechanism to the bundling mechanism to be bundled, and clamp a bundled sheet-like medium bundle out of the bundling mechanism: 
         [0023]    wherein the bundling mechanism includes a paper tape loop-forming mechanism, a heat and pressure bonding mechanism and a paper tape cutting-off mechanism; the paper tape loop-forming mechanism includes a guiding groove for guiding the paper tape, and a head and a tail of the guiding groove are connected to form a conveying loop; the guiding groove includes a bottom portion, an opening corresponding to the bottom portion, and two corresponding groove side walls extending between the bottom portion and the opening, and the opening faces an inner side of the conveying loop; a paper tape inserting port and at least one paper tape conveying wheel are provided at the bottom portion of the guiding groove; the heat and pressure bonding mechanism and the paper tape cutting-off mechanism are located at the bottom portion of the guiding groove closing to the paper tape inserting port; and a guiding member, having elasticity and parallel to the bottom portion of the guiding groove, is provided at an opening end of the groove side walls. 
         [0024]    Preferably, the bundling mechanism further includes a pressing mechanism, which is located at a side of the guiding groove opposite to the clamping and conveying mechanism, and includes a pressing tongue and a pressing plate assembly arranged at opposite sides of the sheet-like mediums to be bundled respectively; wherein the pressing tongue extends into the guiding groove, a bonding portion of the loop-forming paper tape is clamped between the pressing tongue and the heat and pressure bonding mechanism, and the pressing plate assembly is driven by a crank and connecting rod mechanism to move towards the pressing tongue to perform a pressing action or move away from the pressing tongue to perform a releasing action. 
         [0025]    Preferably, the bundling mechanism further includes a flattening mechanism, which is located at a side of the guiding groove close to the clamping and conveying mechanism, and includes a supporting mechanism and a flapping mechanism arranged at opposite sides of the sheet-like mediums to be bundled. 
         [0026]    Compared with the prior art, the technical solutions provided by the present application has the following advantages. 
         [0027]    The sheet-like medium stacking and bundling device according to the present application can effectively solve a problem of unreliability of the loop-forming of a paper-tape and improve the bundling effect by means of the bending deformation of the banknotes during the bundling process, and via a flattening mechanism, the bundled banknotes are bundled tightly and flattened so as to meet the bank storage requirements. 
         [0028]    The self-service apparatus according to the present application can realize automatic separating, stacking and bundling, therefore, the stacking, bundling and collecting of the sheet-like mediums may be completed without manual operation, thereby greatly reducing the labor intensity of bank operators and improving work efficiency of the bank. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0029]      FIG. 1  is a simplified view of a self-service apparatus according to the present application; 
           [0030]      FIG. 2  is an overall view of a banknote stacking and bundling device according to the present application; 
           [0031]      FIG. 3  is a schematic view of the arrangement of mechanisms of the banknote stacking and bundling device in  FIG. 2  viewed from a direction F; 
           [0032]      FIG. 4  is a first perspective view of a bundling mechanism of the banknote stacking and bundling device in  FIG. 1 ; 
           [0033]      FIG. 5  is a partial front view of a supporting mechanism of the bundling mechanism in  FIG. 4 ; 
           [0034]      FIG. 6  is a second perspective view of the bundling mechanism of the banknote stacking and bundling device in  FIG. 1 ; 
           [0035]      FIG. 7  is a schematic view of the second perspective view of the bundling mechanism in  FIG. 6  with a fixing plate being removed; 
           [0036]      FIG. 8  is a sectional view taken along a plane A-A in  FIG. 6 ; 
           [0037]      FIG. 9  is an isometric side view of a paper tape loop-forming mechanism of the bundling mechanism in  FIG. 7 ; 
           [0038]      FIG. 10  is an isometric side view of the paper tape loop-forming mechanism rotating 180° about an axis D-D in  FIG. 9 ; 
           [0039]      FIG. 11  is a schematic view showing a possible state of the paper tape when the paper tape loop-forming mechanism has no elastic member; 
           [0040]      FIG. 12  is a sectional view taken along a plane B-B in  FIG. 6  when banknotes enter the bundling mechanism; 
           [0041]      FIG. 13  is a sectional view taken along the plane B-B in  FIG. 6  when the banknotes are in place; 
           [0042]      FIG. 14  is a view seen from a direction E in  FIG. 12  showing a state of a pressing mechanism when the banknotes are entered; 
           [0043]      FIG. 15  is a sectional view taken along the plane A-A in  FIG. 6  when the paper tape loop-forming is in place; 
           [0044]      FIG. 16  is a schematic view of a part C in  FIG. 15  when the paper tape is pressed tightly; 
           [0045]      FIG. 17  is a view seen from the direction E in  FIG. 12  showing the pressing mechanism pressing the banknotes tightly; 
           [0046]      FIG. 18  is a partial sectional view taken along the plane A-A in  FIG. 6  showing the paper tape being separated from a guiding member; 
           [0047]      FIG. 19  is a partial sectional view taken along the plane A-A in  FIG. 6  showing the paper tape being pulled back and tightened; 
           [0048]      FIG. 20  is a partial sectional view taken along the plane A-A in  FIG. 6  showing a pressing head pressing the paper tape tightly; 
           [0049]      FIG. 21  is a partial sectional view taken along the plane A-A in  FIG. 6  showing the paper tape being cut off and bonded; 
           [0050]      FIG. 22  is a view seen from the direction E in  FIG. 12  showing a state of the banknotes after being bundled; 
           [0051]      FIG. 23  is a sectional view taken along the plane A-A in  FIG. 6  showing the banknotes being drew to a flattening position; 
           [0052]      FIG. 24  is a view seen from the direction E in  FIG. 12  showing a flattening mechanism in an initial position; and 
           [0053]      FIG. 25  is a view seen from the direction E in  FIG. 12  showing the flattening mechanism in a lowest position. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0054]    For those skilled in the art to better understand technical solutions of the present application, the sheet-like medium stacking and bundling device according to the present application is further described in detail below in conjunction with drawings and embodiments, by taking an automatic teller machine (ATM) having a function of stacking and bundling banknotes as an example, and certainly besides the banknotes, mediums such as cheques may also be processed. 
         [0055]    Referring to  FIG. 1 , a typical self-service apparatus is shown, which includes a user operating portion  001 , a banknote receiving portion  002 , a banknote conveying portion  003 , a banknote stacking and bundling device  100 , an identification portion  004  for identifying the banknote and a temporary storage portion  005  for temporarily storing banknotes. The user operating portion  001  includes a banknote deposit port  0011  and a banknote withdrawal port  0012 . The self-service apparatus has a banknote deposit and withdrawal function, and a banknote bundling function, and the operation process of the apparatus is described briefly hereinafter. When performing the banknote withdrawal operation, the banknotes are separated from the banknote receiving portion  002  and passes through the banknote identification portion  004 , then the banknotes meeting requirements are stored in the temporary storage portion  005  temporarily. When meeting the operation requirements, the banknotes stored in the temporary storage portion  005  are conveyed, by the banknote conveying portion  003 , to the banknote withdrawal port  0012  or to the banknote stacking and bundling device  100  to be bundled and sent out. When performing the deposit operation, the banknotes are separated from the banknote deposit port  0011  one by one and then are conveyed to the banknote identification portion  004  by the banknote conveying portion  003 , then the banknotes meeting requirements are conveyed into the temporary storage portion  005 , and after the separation or the temporary storage are finished, the banknotes are conveyed to the banknotes receiving portion  002  by the banknote conveying portion  003 , thereby accomplishing the entire deposit operation. 
         [0056]    The banknote stacking and bundling device  100  according to the present application is described in detail in conjunction with  FIGS. 2 to 25  hereinafter. 
         [0057]    Referring to  FIG. 2 , an overall view of the banknote stacking and bundling device  100  is shown, which includes a single-sheet banknote entering passage  901  butting with the banknote conveying portion  003 , a position switching mechanism  900  for stacking banknotes, a banknote tidying mechanism  902 , a clamping and conveying mechanism  904 , a bundling mechanism  999 , a receiving port  920  for receiving a banknote bundle  910 , and a frame  905  for supporting the above mechanisms. The position switching mechanism  900  is located at a conveying terminal of the single-sheet banknote entering passage  901  to receive and stack the banknotes entered in single sheet. The banknote tidying mechanism  902  is located at a left side of the position switching mechanism  900 , and during the stacking process of the banknotes in the position switching mechanism  900 , flaps end portions of the stacked banknotes continuously to make the banknotes stacked tidily. The clamping and conveying mechanism  904  is located at the left side of the position switching mechanism  900  to clamp and convey the stacked banknotes in the position switching mechanism  900  to the bundling mechanism  999  located at a right side of the position switching mechanism  900 , and clamp a banknote bundle bundled in the banknote bundling mechanism  999  out of the bundling mechanism  999  and convey the banknote bundle back to the position switching mechanism  900 . Then, the banknote bundle is conveyed to the receiving port  920  located at a downstream of the position switching mechanism  900 . 
         [0058]    The arrangement relationship between the main components of the banknote stacking and bundling device  100  is illustrated in conjunction with  FIG. 3 . 
         [0059]    The bundling mechanism  999  is located at the right side of the position switching mechanism  900 , and a passage plate  11  for supporting each assembly is provided between the bundling mechanism  999  and the position switching mechanism  900 . All components of the bundling mechanism  999  are fixed on a bundling frame  908 , wherein a bundling assembly  30  of the bundling mechanism  999  includes a paper tape loop-forming mechanism  400 , a heat and pressure bonding mechanism  200 , a paper tape cutting-off mechanism (not shown), and a pressing mechanism  0400  arranged at a right side of the paper tape loop-forming mechanism  400 . The pressing mechanism  0400  includes a pressing tongue  404  and a pressing plate assembly  300  arranged at opposite sides of the banknotes to be bundled respectively, wherein a top surface of the pressing tongue  404  is flush with a top surface of a pushing platform  915 , and a bottom surface of the pressing tongue  404  is slightly higher than a track surface of the paper tape loop-forming mechanism  400 , and a left end of the pressing tongue  404  protrudes out of the paper tape loop-forming mechanism  400  slightly. The paper tape loop-forming mechanism  400  is a guiding groove having an annular track shape, which encircle a left portion of the pressing tongue  404 . The heat and pressure bonding mechanism  200  is mounted under the pressing tongue  404  at a position corresponding to a bottom of the guiding groove, and the pressing plate assembly  300  is located at the right side of the paper tape loop-forming mechanism  400  and above the pressing tongue  404 . A flattening mechanism  20  is provided between the bundling mechanism  999  and the passage plate  11 , the flattening mechanism  20  is located at a left side of the bundling frame  908 , and a bundling assembly  30  is mounted at a right side of the flattening mechanism  20 . The flattening mechanism  20  includes a supporting mechanism  600  located at a lower portion of the flattening mechanism  20 , and a flapping mechanism  500  located at an upper portion of the flattening mechanism  20  corresponding to the supporting mechanism  600 . The supporting mechanism  600  is driven by a scissor-type mechanism to form a high position and a low position, and the high position, formed when the scissor-type mechanism opens, is slightly higher than top surfaces of the pushing platform  915  and the pressing tongue  404 , thereby ensuring the smooth pushing of the banknotes from left to right. The flapping mechanism  500  is driven by a crank-slider mechanism to perform reciprocating movement towards the supporting mechanism  600 , thereby flapping and flattening the banknotes. 
         [0060]    The main components of the bundling module are illustrated in conjunction with  FIGS. 4 to 10 . 
         [0061]      FIGS. 4 and 5  show the mechanisms at the left side of the bundling frame  908 , which are the flapping mechanism  500  and the supporting mechanism  600  through which the banknotes  910  passes firstly. The flapping mechanism  500  is located at the upper portion and is driven by the crank-slider mechanism to perform a reciprocating movement from top to bottom, the crank-slider mechanism includes a driving crank  501 , a connecting rod  502 , a guide sleeve  504 , a flattening plate  505  and a sliding shaft  506 , and an initial position of the flapping mechanism  500  is detected by a sensor  503 . The supporting mechanism  600  is located at the lower portion, and a scissor-type mechanism is formed by a base  606 , a connecting rod  607 , a connecting rod  608  and a top plate  603 . A banknote supporting plate  605  and a returning spring  604  are mounted on a top portion of the top plate  603 , and a left and right reciprocating movement of the scissor-type mechanism driven by an eccentric wheel  609  is converted to a up and down movement of the banknote supporting plate  605 . A detecting assembly of the supporting mechanism  600  is formed by a sensor  601  and a stopper  602 . Preferably, the flattening plate  505  and the banknote supporting plate  605  are aligned with a central plane of an opening of the paper tape loop-forming mechanism  400 , and when the banknote supporting plate  605  is in a highest position, the flattening plate  505  moves towards the banknote supporting plate to flap the banknotes on the banknote supporting plate for several times, thereby realizing the function of flattening the stacked banknotes. 
         [0062]    Referring to  FIGS. 6 to 8 , mechanisms at the other side of the bundling frame  908  are shown. The paper tape loop-forming mechanism  400  and the heat and pressure bonding mechanism  200  are respectively mounted at positions corresponding to central planes of the flapping mechanism  500  and the supporting mechanism  600 , and the pressing plate assembly  300  is mounted on the right side of the paper tape loop-forming mechanism  400  and is fixed to the bundling frame  908  via a fixing plate  320 . A crank-slider mechanism of the pressing plate assembly  300  is formed by a crank  301 , a connecting rod  302 , a driving plate  303 , a guide sleeve  304 , a returning spring  305 , a pressing plate  306  and a guide shaft  307 . The driving plate  303  can slide up and down along the guide shaft  307 , and a position state of the driving plate  303  is detected by an encoder which is not shown. The pressing plate  306  is of a substantially “         ” shape, and a pressing tongue  404  having a substantial triangular shape matching the shape of the pressing plate  306  is provided under the pressing plate  306 . The pressing tongue  404  is fixed to the bundling frame  908 , and a top surface  221  of the pressing tongue  404  is slightly lower than the banknote supporting plate  605  in the highest position, such that the banknotes can slide easily from the banknote supporting plate  605  to the pressing tongue  404 . A lower surface  222  of the pressing tongue  404  faces the heat and pressure bonding mechanism  200 . The heat and pressure bonding mechanism  200  includes a rear pressing head  204 , a heating head body  205 , a roller  206 , a heating head  208 , a cutter  211 , a front pressing head  210 , all of which are mounted on a heating head base  202  and are driven with the heating head base  202  by a camshaft  203  to slide up and down along a guide shaft  201 . At the same time, the rear pressing head  204 , the heating head  208 , the cutter  211  and the front pressing head  210  may also move up and down in a vertical direction, and a spring  215  provides a returning force. One end of the spring  215  is connected to the frame  908 , and the other end of the spring  215  is connected to the heating head base  202 , so as to provide a returning force for the downward sliding of the heat and pressure bonding mechanism  200 . 
         [0063]    The main components of the paper tape loop-forming mechanism  400  and the arrangement manner thereof is illustrated in conjunction with  FIGS. 8 to 10 . The paper tape loop-forming mechanism  400  includes a track  403  formed by the guiding groove having an annular track shape, a head and a tail of the guiding groove are connected to form a conveying loop, and the guiding groove includes a bottom portion  4031 , an opening  4032  corresponding to the bottom portion  4031 , and two corresponding groove side walls  4033  extending between the bottom portion  4031  and the opening  4032 . The opening  4032  faces an inner side of the conveying loop, and a first power wheel  401 , a second power wheel  402 , a third power wheel  410  and a fourth power wheel  411  are disposed at four corners of the opening  4032  and may perform synchronized motion via a synchronous belt  407 . A paper tape conveying motor  707  drives a driving wheel  705  via a driving shaft so as to provide power to the synchronous belt. The surfaces of the four power wheels are covered with rubber so as to increase the conveying force for the paper tape. In addition, the heat and pressure bonding mechanism  200  and the paper tape cutting-off mechanism are located at the bottom portion of the guiding groove closing to a paper tape inserting port  4034 , and an elastic guiding member  408 , parallel to the bottom portion of the guiding groove, is provided at an opening end of the groove side walls. The guiding member  408  and an inner surface, for conveying the paper tape, of the track  403  form a semi-closed passage. Preferably, the guiding member  408  includes a bending portion bending towards the inside of the track  403  and formed at a portion of the semi-closed passage, through which the paper tape passes firstly, such that the paper tape may pass through the track more easily and have a trend of going up gradually when moving rightward. The guiding member  408  is mounted on a fixing plate  409  mounted on the bundling frame  908 . A sensor  706  for detecting the existence of the paper tape is provided at an entrance of the track. 
         [0064]    It should be noted that, the shape of the guiding groove is not limited to the annular track shape, can also be other shapes with a head and a tail connected, such as circular, elliptical, and the object of the present application can also be realized. 
         [0065]      FIG. 11  shows a state of the paper tape, which may happen most possibly when moving in the track, when there is no guiding member  408 . As shown in  FIG. 11 , since a resistance force, produced when a paper tape head  810  contacts the track  403 , is larger than a tension force generated by a rigidity of the paper tape  801 , the paper tape head cannot enter a predetermined position under the bottom surface of the pressing tongue  404  and at a top surface of a left side of the front pressing head  210 , which can refer to  FIG. 15 , so that the paper tape cannot form a loop and accordingly subsequent actions can not be performed. 
         [0066]    The principle of moving forward and backward of the paper tape  801  is illustrated in conjunction with  FIG. 8 . After being led out from a paper reel assembly  800 , the paper tape head  810  of the paper tape  801  bypasses a first guide wheel  802 , and passes through a limit passage formed between a second guide wheel  803  and a third guide wheel  804 , and then is inserted into a passage formed between a lower passage plate  703  and the track  403 . By rotating a hand wheel  720 , the driving wheel  705  and a driven wheel  704  are driven to champ and convey the paper tape  801  leftward. When performing a power-on initialization, the paper tape conveying motor  707  drives the driving wheel  705  to convey the paper tape  801  leftward, and after the paper tape head  810  is detected by the sensor  706 , the paper tape is conveyed continually for a fixed length to pass through a hole in the front pressing head  210 , and the paper tape head  810  can flush with or slightly protrude out of the left side of the front pressing head  210 , as shown in  FIG. 8 . Then, the sensor  710  determines whether or not the paper tape forms a loop. If the sensor  710  detects the passing of the paper tape within a specified time, that indicates the loop-forming of the paper tape is successful; If the sensor  710  does not detect the passing of the paper tape within a specified time, the paper tape head is drew back to the sensor  706  to try to form a loop again. When drawing back the paper tape, the paper tape conveying motor  707  drives the driving wheel  705  to convey the paper tape rightward. The conveying force for the paper tape can be adjusted by adjusting a torsion force of a pressure spring  702  of the driven wheel  704 . 
         [0067]    The bundling process of the banknote stacking and bundling device is further illustrated in conjunction with  FIGS. 12 to 25 . 
         [0068]      FIGS. 12 to 13  shows the process of the banknotes  910  entering the interior of the bundling assembly  30 . Firstly, the clamping and conveying mechanism  904  conveys the banknotes  910 , and when a right end of the banknotes  910  exceeds the passage plate  11  for about 10 mm, the supporting mechanism  600  is raised to the highest position to prevent conveying failure caused by an over falling amount of the right end of the banknotes  910 . Then, the banknotes  910  are continuously conveyed rightward by the clamping and conveying mechanism  904  until reaching a predetermined position. During the above process, only the supporting mechanism moves to a working position, other mechanisms are all in initial states. As shown in  FIG. 13 , the state of the mechanisms viewed from the direction E in  FIG. 8  is shown, wherein the fixing plate  320  of the pressing plate assembly  300  is omitted. 
         [0069]    The bundling process of the banknote stacking and bundling device is further described in conjunction with  FIGS. 15 to 25 . 
         [0070]      FIG. 15  shows the loop-forming process of the paper tape  801 . The paper tape  801  is clamped and conveyed by the driving wheel  705  and the driven wheel  704  leftward, and passes through the hole in the front pressing head  210  firstly, then is conveyed by the power wheels  402 ,  410 ,  411  to firm a loop along the inner wall of the track  403 ; and meanwhile, the paper tape conveying motor  707  calculates a conveyed length of the paper tape and is stopped until a specified length is reached, and the final loop-forming effect is shown in  FIG. 15 . During the conveying process, when the paper tape head  810  subjects to a resistance force, the other portion of the paper tape behind the paper tape head  810  may expand towards the track, and then may be driven by tangential forces when contacting the surfaces of the power wheels  402 ,  410 ,  411 , thereby reducing the possibility of the paper tape head  810  being blocked and improving the reliability of the loop-forming of the paper tape. 
         [0071]    Next, as shown in  FIG. 16 , the heat and pressure bonding mechanism  200  moves upwardly to a first position, at this time, the front pressing head  210  firstly contacts the lower surface of the pressing tongue  404  and presses the paper tape  801  tightly. 
         [0072]    Then, as shown in  FIG. 17 , the pressing plate assembly  300  moves downwardly and presses the banknotes  910  tightly on the pressing tongue  404 . The pressing plate  308  has a shape similar to the pressing tongue  404 , i.e. the middle portion is higher and the two sides are lower, thus the banknotes are pressed into a “         ” shape. 
         [0073]    As shown in  FIG. 18 , the driving wheel  705  rotates reversely to draw the paper tape  801  leftward, and since the guiding member  408  is elastic, the existence of the guiding member  408  will not affect the retracting of the paper tape  801  from the guiding member  408  towards the banknotes  910 . The bank tape  801  in a tensioning state is shown in  FIG. 19 , at this time, a length of the paper tape  801  surrounding the stacked banknotes for one circle is just equal to a perimeter, in a width direction, of the stacked banknotes in flattening state. 
         [0074]    Then, as shown in  FIG. 20 , the heat and pressure bonding mechanism  200  moves upwardly to a second position, at this time, the rear pressing head  204  also contacts the lower surface of the pressing tongue  404  and presses the paper tape between a top surface of the rear pressing head  204  and the lower surface of the pressing tongue tightly. 
         [0075]    Finally, as shown in  FIG. 21 , the heat and pressure bonding mechanism  200  moves upwardly to a third position, during this process, since a position of a portion of the paper tape adjacent to the front pressing head  210  is lower than a position of a portion of the paper tape adjacent to the rear pressing head  204 , the paper tape  801  is cut off when the cutter  211  moves upwardly and forms a cutting edge with the front pressing head  210 . When reaching the third position, the heat and pressure bonding mechanism  200  stays for a certain time to ensure the bonding effect of the paper tape. The motor  707  is kept in a power-on state during the process from the paper tape being tensioning to the paper tape being cut off, so as to ensure the cutting effect of the paper tape. After the delay, the heat and pressure bonding mechanism is return to the original position and the bundling is completed, and the position of the paper tape head at this time is shown in  FIG. 8 . 
         [0076]    After the bundling is completed, the pressing plate. assembly  300  returns to the original position, and at this time, the states of the mechanisms are shown in  FIG. 22 . A bundled banknotes is denoted as  911  and the paper tape bundled on the banknotes  911  is denoted as  802 , so as to distinguish from the unbundled banknotes  910  and paper tape  801 . 
         [0077]    Next, as shown in  FIG. 23 , the clamping and conveying mechanism  904  drags the banknotes  911  leftward, such that the paper tape  802  and the flattening plate  505  are substantially located in a same vertical plane. 
         [0078]    Then, the flapping mechanism  500  starts to operate, the flattening plate  505  moves downwardly to flap the banknotes  911 . The banknotes  911  tend to be flattened under a downward pressure of the flattening plate  505 , as shown in  FIGS. 24 and 25 . The flattening process is completed after the flapping mechanism  500  performs the flapping for several times. 
         [0079]    Finally the clamping and conveying mechanism  904  drags the banknotes  911  back into the position switching mechanism  900 , the supporting mechanism  600  returns to the original position, the banknotes  911  are carried to the receiving port  920  by the position switching mechanism  900 , thereby completing the bundling process. 
         [0080]    The above description is only preferred embodiments of the present application. It should be noted that, the above preferred embodiments are not intended to limit the present application, and the protection scope of the present application is defined by the claims of the present application. For the person skilled in the art, many modifications and improvements may be made to the present application without departing from the principle of the present application, and these modifications and improvements are also deemed to fall into the protection scope of the present application.