A bill cutting mechanism

Abstract

The present invention relates to a bill trimming mechanism, comprising a bill conveying channel, a bill driving device is arranged at the rear side of the bill conveying channel, a bill trimming device is arranged at the front side of the bill conveying channel, an upper channel plate and a lower channel plate are respectively installed at the upper and lower parts of the bill conveying channel; the bill trimming device comprises an upper conveying cutter part and a lower conveying cutter part, the upper conveying cutter part comprises an upper belt frame, a slave conveying group 1, a main conveying group 1, an upper cutter rotating shaft and an upper circular cutter, two slave conveying groups 1 are arranged at the upper left and right sides of the upper part of the upper channel plate, two main conveying groups 1 are respectively sleeved at the left and right sides of the upper cutter rotating shaft, and two upper circular cutters arranged at the left and right sides are sleeved on the upper cutter rotating shaft; the present invention keeps the bill conveying in the bill conveying channel stable through the rotational contact of the upper and lower conveying belts, and two groups of circular cutters located at the left and right sides of the two channel plates cooperate to realize the trimming operation of the pinholes on both sides of the bill, thereby ensuring that the bill trimming is neat and completely cut.

Description

Technical Field

[0001] The invention relates to the technical field of bill cutting equipment, and in particular to a bill cutting mechanism. Background Art

[0002] At present, the multi-copy tax invoices on the market generally have a row of pinholes on both sides. The purpose is to position the printer and design the paper feed. It is not very useful for users. However, when these multi-copy invoices need to be separated on some self-service equipment, the existence of burrs on these pinholes makes it difficult for the equipment to automatically separate the copies or the separation effect is poor. In order to reduce the influence of the burrs on the pinholes on the automatic separation, one of the commonly used methods is to transmit the invoice from the printer through the invoice driving device and at the same time use a conveying cutter to cut off the pinhole edges on both sides of the invoice. However, in the specific process of cutting, the invoice is driven forward by a single set of upper and lower conveying pressure wheels, and the pinhole edges of the invoice are cut off by the upper and lower offset cutters. The invoice adopts the traditional upper and lower pressure wheel transmission cutting method, which can easily lead to an unstable state during the movement, that is, causing the cutting edges to be not straight or not cut continuously. Therefore, a mechanism that can stably cut the pinhole edges of the invoice is urgently needed to solve the above problems. Summary of the invention

[0003] The present invention provides a bill trimming mechanism to solve the above-mentioned problem.

[0004] In order to solve the above problems, the technical solution provided by the present invention is as follows: a bill trimming mechanism comprises a bill conveying channel, a bill driving device for driving the bill forward is arranged at the rear side of the bill conveying channel, a bill trimming device is arranged at the front side of the bill conveying channel, and an upper channel plate and a lower channel plate are respectively installed at the upper and lower parts of the bill conveying channel; the bill trimming device comprises an upper conveying cutter part installed at the upper part of the upper channel plate and a lower conveying cutter part installed at the lower part of the lower channel plate, the upper conveying cutter part comprises an upper belt frame, a slave conveying group 1, a main conveying group 1, an upper cutter rotating shaft and an upper circular cutter, two slave conveying groups 1 are installed at the upper left and right parts of the upper channel plate through two upper belt frames On both sides, two main conveying groups are respectively sleeved on the left and right sides of the upper cutter shaft, and the left and right ends of the upper cutter shaft are respectively correspondingly penetrated on the left and right side plates of the upper channel plate through bearings, and the conveying group and the main conveying group are connected by an upper conveying belt, and two upper circular cutters arranged on the upper cutter shaft are sleeved; a square through hole is opened at a position corresponding to the main conveying group on the upper channel plate, and the upper conveying belt and the upper circular cutter protrude downward through the square through hole; one end of the upper cutter shaft is connected to the rotation drive assembly through the upper main gear; the lower conveying cutter part includes a left cutter group and a right cutter group located at the lower part of the lower channel plate and corresponding to and contacting the two upper circular cutters.

[0005] Preferably, the right cutter group includes a right belt frame, a slave conveyor group 2, a main conveyor group 2, a lower conveyor belt and a lower cutter shaft. The main conveyor group 2 and the slave conveyor group 2 are respectively passed through the rear and front sides of the right belt frame through the main belt shaft 1 and the slave belt shaft 2. The slave conveyor group 2 and the main conveyor group 2 are connected through the lower conveyor belt, and the two ends of the lower cutter shaft located between the slave conveyor group 2 and the main conveyor group 2 are connected and installed on the right belt frame through two bearing shafts. A right circular cutter is sleeved on the middle part of the outer wall of the lower cutter shaft; a right slave gear is sleeved on the right side of the main belt shaft 1; the right slave gear is meshed with the upper main gear; the left cutter group and the right cutter group are left-right symmetrical structures.

[0006] Preferably, a square through hole 2 is provided on the lower channel plate at a position corresponding to the second conveying group, and the lower conveying belt and the right circular cutter protrude upward through the square through hole 2; the upper conveying belt and the lower conveying belt are in contact with each other to clamp the bills for transmission, and the lower end of the upper circular cutter and the upper end of the right circular cutter are in contact with each other in a left-right offset manner to perform edge trimming operations on the bills.

[0007] Preferably, the rotation drive assembly includes a motor mounting base, a drive motor, a drive main pulley, a drive slave pulley and a drive belt. The fixed end of the drive motor is fixed to the upper part of the right belt frame through the motor mounting base, the working end of the drive motor is fixedly connected to the center of the drive main pulley, the drive main pulley is connected to the drive slave pulley disposed on the right end of the upper cutter shaft through a drive belt, and the drive slave pulley and the upper main gear are both mounted on the same side of the outer wall of the upper cutter shaft, thereby achieving synchronous rotation.

[0008] Furthermore, an upper slave gear is sleeved on the other end of the upper cutter shaft, and a lower slave gear is sleeved on the second main belt shaft in the left cutter assembly, wherein the upper slave gear meshes with the lower slave gear.

[0009] Preferably, each slave conveyor group 1 includes a slave belt rotating shaft 1 and two upper slave belt pulleys, wherein the two upper slave belt pulleys are arranged left and right and sleeved on the outside of the slave belt rotating shaft 1, and the two ends of the slave belt rotating shaft 1 are installed on the upper belt frame through bearing three; the slave conveyor group 2 has the same structure as the slave conveyor group 1; the main conveyor group 1 includes two upper main belt pulleys corresponding to the positions of the two upper slave belt pulleys, and the two upper main belt pulleys are arranged left and right and sleeved on the upper cutter rotating shaft, wherein an upper circular cutter is sleeved on the outer wall of the upper cutter rotating shaft and located between the two upper main belt pulleys; the main conveyor group 2 includes two lower main belt pulleys arranged left and right, and the two lower main belt pulleys are sleeved on the outside of the main belt rotating shaft 1, and the left and right ends of the main belt rotating shaft 1 are installed on the right belt frame through bearing four.

[0010] Furthermore, the outer wall of the lower cutter shaft is located on the left and right sides of the right circular cutter and is also sleeved with a middle slave pulley, and when the lower conveying belt rotates, the middle slave pulley is driven to rotate synchronously.

[0011] Preferably, the right end of the lower cutter shaft passes through the right belt frame, and a middle slave gear is sleeved on the outside, and the middle slave gear is meshed with the upper main gear.

[0012] The beneficial effect compared with the prior art is that, by adopting the above scheme, the upper conveying cutter part and the lower conveying cutter part of the present invention work simultaneously, and the bill is kept stably conveyed in the bill conveying channel through the rotational contact of the upper and lower conveying belts, and the two upper circular cutters and the left and right circular cutters on the lower channel plate cooperate to achieve the trimming operation of the pinhole edges on both sides of the bill, thereby ensuring that the bill trimming is neat and completely cut; the lower cutter shaft rotates with the lower conveying belt or through the upper main gear, thereby realizing the rotation of the left and right circular cutters located on the lower channel plate, further improving the trimming ability, simple structure, convenient operation, and good market application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the prior art of the present invention;

[0015] Figure 2 It is a schematic diagram of the structure of the prior art trimming assembly of the present invention;

[0016] Figure 3 It is a schematic diagram of the structure of the upper conveying and trimming part of the present invention;

[0017] Figure 4 It is a schematic diagram of the structure of the upper cutter shaft of the present invention;

[0018] Figure 5 It is a schematic diagram of the structure of the lower conveying and trimming part of the present invention;

[0019] Figure 6 This is a schematic diagram of the installation position structure of the rotary drive assembly of the present invention;

[0020] Figure 7 It is a schematic diagram of the structure of the lower cutter shaft of the present invention;

[0021] Figure 8 It is an enlarged structural schematic diagram of the upper conveying cutter portion and the right cutter group of the present invention;

[0022] Fig. 9 It is a schematic diagram of the bill pinhole edge before and after trimming of the present invention;

[0023] As shown in the above figure: 1, bill conveying channel 2, upper channel plate 3, lower channel plate 4, bill driving device 51, upper conveying shaft 52, upper pressure wheel 53, upper cutter 54, lower conveying shaft 55, lower pressure wheel 56, lower cutter 57, lower pulley 6, upper conveying cutter part 61, upper belt frame 62, slave conveying group 1 63, main conveying group 1 631, upper main pulley 64, upper cutter shaft 65, upper circular cutter 66, upper conveying belt 67, bearing 1 68, bearing 3 69, upper main gear 7, right cutter group 71, right belt frame 72, slave conveying group 2 73, main conveying group 2 74, lower conveying belt 75, lower cutter shaft 76, right circular cutter 77, right slave gear 78, slave belt shaft 2 8, rotation drive component 81, drive motor 82, drive main pulley 83, drive slave pulley. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are provided in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "fixed", "integrally formed", "left", "right" and similar expressions used in this specification are for illustrative purposes only. In the drawings, units with similar structures are marked with the same reference numerals.

[0026] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0027] like Figure 1 and Figure 2As shown, a bill trimming mechanism comprises a bill conveying channel 1, a bill driving device 4 for driving the bill forward is provided at the rear side of the bill conveying channel 1, a bill trimming device is provided at the front side of the bill conveying channel 1, and an upper channel plate 2 and a lower channel plate 3 are respectively installed at the upper and lower parts of the bill conveying channel; further, the bill driving device in the prior art comprises an upper driving shaft, a lower driving shaft, a main driving wheel and a main driving motor, the two ends of the upper driving shaft are installed on the two side plates 1 of the upper channel plate through upper bearings, the two ends of the lower driving shaft are installed on the two side plates 2 of the lower part of the lower channel plate through lower bearings, a plurality of upper transmission wheels are provided on the outer sleeve of the upper driving shaft, a plurality of lower transmission wheels are provided on the outer sleeve of the lower driving shaft, an upper strip through hole is provided at a position corresponding to the upper transmission wheel on the upper channel plate, and a lower through hole is provided at a position corresponding to the upper transmission wheel on the lower channel plate. A lower strip through hole is provided on the track plate at a position corresponding to the lower transmission wheel, and the upper transmission wheel is frictionally contacted and connected with the lower transmission wheel which passes through the upper strip through hole, and one end of the lower driving shaft passes through the side plate one and is fixedly connected with the center of the slave driving wheel, and the center of the main driving wheel is passed through the side plate two through the bearing five, wherein the main driving wheel is connected with the slave driving wheel through a main driving belt, and the fixed end of the main driving motor is connected with the center of the main driving wheel, and a main driving pulley is also sleeved on the end of the lower driving shaft, and the main driving motor drives the main driving wheel to drive the slave driving wheel, the lower driving shaft and the main driving pulley to rotate synchronously, and at this time, the rotation of the lower transmission wheel drives the upper transmission wheel to rotate by friction force, and the bills are transmitted between the upper transmission wheel and the lower transmission wheel, thereby realizing the forward driving and transmission of the bills output by the printer.

[0028] The bill trimming device in the prior art includes an upper conveying shaft 51, a lower conveying shaft 54, an upper pressing wheel 52, a lower pressing wheel 55, an upper cutter 53 and a lower cutter 56. The upper conveying shaft and the lower conveying shaft are respectively installed on the side plate 1 and the side plate 2 through the bearing 6. The left and right sides of the outer side of the upper conveying shaft are sleeved with double upper pressing wheels, and the left and right sides of the outer side of the lower conveying shaft are sleeved with double lower pressing wheels. The two ends of the lower conveying shaft pass through the side plate 1 and the side plate 2 and then the outer side is sleeved with a lower pulley 57. The lower pulley is connected to the main The driving pulley is connected by a flat belt, and the double upper pressure wheels are in frictional contact with the double lower pressure wheels through the upper strip through holes. When the main driving pulley rotates, the double lower pressure wheels and the lower conveying shaft are driven to rotate through the flat belt. At this time, the double lower pressure wheels will rotate with the lower conveying shaft, and the double upper pressure wheels and the double lower pressure wheels rotate frictionally to realize the transmission of the bills. An upper cutter is provided between the double upper pressure wheels, and a lower cutter is provided between the double lower pressure wheels. The upper cutter and the lower cutter are in staggered contact left and right to cut off the pinhole edge of the bill.

[0029] like Figure 3-Figure 9As shown in Example 1, the improved bill trimming device includes an upper conveying cutter part 6 installed on the upper part of the upper channel plate and a lower conveying cutter part installed on the lower part of the lower channel plate. The upper conveying cutter part 6 includes an upper belt frame 61, a slave conveying group 1 62, a main conveying group 1 63, an upper cutter rotating shaft 64 and an upper circular cutter 65. Two slave conveying groups 1 62 are installed on the left and right sides of the upper part of the upper channel plate through two upper belt frames 61. Two main conveying groups 1 63 are respectively sleeved on the left and right sides of the upper cutter rotating shaft 64. The left and right ends of the upper cutter rotating shaft 64 are respectively correspondingly penetrated on the left and right side plates of the upper channel plate through a bearing 1 67. The slave conveying group 1 62 and the main conveying group 1 63 are connected through the upper conveying group 1 The upper cutter shaft 64 is connected with a conveying belt 66, and two upper circular cutters 65 arranged left and right are sleeved on the upper cutter shaft 64; a square through hole 1 is opened at a position corresponding to the main conveying group 1 63 on the upper channel plate, and the upper conveying belt 66 and the upper circular cutter 65 protrude downward through the square through hole; one end of the upper cutter shaft 64 is connected to the rotation drive component 8 through the upper main gear 69; further, the rotation drive component 8 drives the upper main gear 69 to rotate, thereby driving the upper cutter shaft 64 to rotate, so that the slave conveying group 1 62, the main conveying group 1 63 and the upper circular cutter 65 rotate synchronously; the lower conveying cutter part includes a left cutter group and a right cutter group 7 located at the lower part of the lower channel plate and corresponding to and contacting the two upper circular cutters.

[0030] Embodiment 2, on the basis of embodiment 1, the right cutter group 7 comprises a right belt frame 71, a slave conveyor group 2 72, a main conveyor group 2 73, a lower conveyor belt 74 and a lower cutter rotating shaft 75, the main conveyor group 2 73 and the slave conveyor group 2 72 are respectively arranged on the rear side and the front side of the right belt frame 71 through the main belt rotating shaft 1 and the slave belt rotating shaft 2 78, the slave conveyor group 2 72 and the main conveyor group 2 73 are connected through the lower conveyor belt 74, and the two ends of the lower cutter rotating shaft 75 located between the slave conveyor group 2 72 and the main conveyor group 2 73 are connected and installed on the right belt frame 71 through two bearing shafts, a right circular cutter 76 is sleeved on the middle part of the outer wall of the lower cutter rotating shaft 75, the upper part of the right circular cutter 76 is in left-right dislocation contact with the lower part of the upper circular cutter 65, and the upper circular cutter 65 is driven to rotate due to the rotation of the upper cutter rotating shaft 64, such as the upper circular cutter 65 and the right circular cutter 7 6 There is a large friction force at the contact position, and the right circular cutter 76 will rotate accordingly. If there is no large friction force at the contact position between the upper circular cutter 65 and the right circular cutter 76, the right circular cutter 76 does not need to rotate, and does not affect the edge trimming operation of the pinhole edge of the bill; the right side outer sleeve of the main belt shaft 1 is provided with a right slave gear 77; the right slave gear 77 is meshed with the upper main gear 69; the left cutter group and the right cutter group 7 are left-right symmetrical structures; further, since the right slave gear 77 in the right cutter group 7 is meshed with the upper main gear 69, the upper cutter shaft 64 rotates to drive the upper main gear 69 and the right slave gear 77 to rotate, thereby driving the main belt shaft 1, the lower conveying belt 74, the slave conveying group 2 72 and the main conveying group 2 73 to rotate synchronously, so that the lower conveying belt 74 in the right cutter group 7 cooperates with the upper conveying belt 66 to realize the driving and conveying operation on the right side of the bill.

[0031] Embodiment 3, on the basis of embodiment 2, a second square through hole is further provided on the lower channel plate at a position corresponding to the second conveying group 72, and the lower conveying belt 74 and the right circular cutter 76 protrude upward through the second square through hole; the upper conveying belt 66 and the lower conveying belt 74 are in contact with each other for clamping the bill for transmission, the lower end of the upper circular cutter 65 on the right and the upper end of the right circular cutter 76 are in contact with each other in a left-right offset manner to trim the right side of the bill, and the lower end of the upper circular cutter 65 on the left and the upper end of the left circular cutter in the left cutter group are in contact with each other in a left-right offset manner to trim the left side of the bill.

[0032] Embodiment 4, on the basis of embodiment 2, the rotation drive assembly 8 includes a motor mounting base, a driving motor 81, a driving main pulley 82, a driving slave pulley 83 and a driving belt. The fixed end of the driving motor 81 is fixed to the upper part of the right belt frame 71 through the motor mounting base, and the working end of the driving motor 81 is fixedly connected to the center of the driving main pulley 82. The driving main pulley 82 is connected to the driving slave pulley 83 which is arranged on the right end of the upper cutter shaft 64 through a driving belt. The driving slave pulley 83 and the upper main gear 69 are both arranged on the same side of the outer wall of the upper cutter shaft 64. The driving motor 81 drives the driving main pulley 82 to drive the driving slave pulley 83 and the upper main gear 69 through the driving belt to achieve synchronous rotation.

[0033] Embodiment 5, on the basis of embodiment 4, the other end, i.e. the left end, of the upper cutter shaft 64 is externally sleeved with an upper slave gear, and the main belt shaft 2 in the left cutter group is externally sleeved with a lower slave gear, wherein the upper slave gear meshes with the lower slave gear; the upper cutter shaft 64 drives the upper slave gear to drive the lower slave gear in the left cutter group to rotate, thereby causing the left cutter group to rotate, thereby realizing the driving and trimming operations on the left side of the bill.

[0034] Embodiment 6, on the basis of embodiment 2, each slave conveying group 1 62 includes a slave belt rotating shaft 1 and two upper slave belt pulleys, wherein the two upper slave belt pulleys are arranged left and right and sleeved on the outside of the slave belt rotating shaft 1, and the two ends of the slave belt rotating shaft 1 are installed on the upper belt frame 61 through bearings 3 68; the structure of the slave conveying group 2 72 is consistent with that of the slave conveying group 1 62; the main conveying group 1 63 includes two upper main belt pulleys 631 corresponding to the positions of the two upper slave belt pulleys, and the two upper main belt pulleys 631 are arranged left and right and sleeved on the upper cutter rotating shaft 64, wherein an upper circular cutter 65 is sleeved on the outer wall of the upper cutter rotating shaft 64 and is located between the two upper main belt pulleys 631, that is, the upper circular cutter corresponds to the position of the bill to be trimmed, and the two upper main belt pulleys Corresponding to the two upper conveying belts, the two upper conveying belts correspond to the left and right sides of the position to be trimmed on one side of the bill respectively, and the two upper conveying belts on one side are used to drive the bill forward, so that on the basis of maintaining the smooth transportation of the bill, the position to be trimmed is neatly cut to prevent the trimming from being crooked; the upper slave pulley in the slave conveying group 62 is connected to the upper main pulley 631 in the main conveying group 63 through the upper conveying belt 66, that is, the upper cutter shaft 64 rotates to drive the upper main pulley 631 to drive the upper conveying belt 66 and the slave conveying group 62 to rotate synchronously; the main conveying group 2 73 includes two lower main pulleys arranged on the left and right, and the two lower main pulleys are sleeved on the outside of the main belt shaft 1, and the left and right ends of the main belt shaft 1 are installed on the right belt frame 71 through bearings 4.

[0035] Embodiment 7, on the basis of embodiment 6, the outer wall of the lower cutter shaft 75 is located on the left and right sides of the right circular cutter 76 and is also sleeved with a middle slave pulley. The right circular cutter on the lower cutting shaft corresponds to the position of the bill to be trimmed up and down. The two lower conveying belts in the right trimming group are in friction contact with the two upper conveying belts on the same side, so that the bill can be transported stably, so that the right circular cutter and the upper circular cutter on the same side can cooperate to achieve the trimming operation of the pinhole edge on the right side of the bill, and the position to be trimmed on the right side of the bill is neatly cut to prevent the trimming from being crooked. When the lower conveying belt 74 rotates, it drives the middle slave pulley to rotate synchronously, that is, the lower conveying belt 74 rotates through the friction force with the middle slave pulley, thereby driving the lower cutter shaft 75 and the right circular cutter 76 to rotate.

[0036] Embodiment 8 is different from Embodiment 7 in that the right end of the lower cutter shaft 75 passes through the right belt frame 71 and a middle slave gear is sleeved on the outside, and the middle slave gear is meshed with the upper main gear 69; the upper cutter shaft 64 rotates to drive the upper main gear 69 to rotate, thereby driving the middle slave gear and the lower cutter shaft 75 to rotate, so that the right circular cutter 76 sleeved on the lower cutter shaft 75 rotates.

[0037] Working principle: Bill transmission process: After the printer outputs the bill, the bill driving device drives the invoice to be transported forward horizontally along the bill transmission channel, that is, the upper transmission wheel on the upper driving shaft and the lower transmission wheel on the lower driving shaft rotate frictionally, thereby transporting the bill forward; Bill upper surface transmission process: Then the driving motor in the rotating drive assembly drives the main pulley to rotate, thereby driving the slave pulley and the upper cutter shaft to rotate through the driving belt. At this time, the slave conveying group 1 and the main conveying group 1 are connected through the upper conveying belt to make the upper circular cutters installed on the left and right sides of the upper channel plate and the upper conveying belt drive and rotate. The two upper circular cutters correspond to the positions to be cut on both sides of the bill, and the lower part of the upper conveying belt rotates frictionally with the upper surface of the bill; Driving and trimming process on the right side of the lower surface of the bill: At the same time, the upper main gear sleeved on the right end of the upper cutter shaft and the right The right follower gear sleeved on the main belt rotating shaft in the cutter group meshes and rotates, so that the lower conveying belt in the right cutter group rotates, and the lower conveying belt in the right cutter group rotates with friction with the upper surface of the bill, thereby driving the bill forward; due to the rotation of the lower conveying belt in the right cutter group, the friction drive of the lower conveying belt and the middle follower pulley drives the lower cutter rotating shaft and the right circular cutter to rotate synchronously, or the upper main gear sleeved on the end of the upper cutter rotating shaft and the middle follower gear sleeved on the right end of the lower cutter rotating shaft mesh and rotate to drive the lower cutter rotating shaft and the right circular cutter to rotate, and the upper circular cutter on the right and the right circular cutter rotate left and right in an offset manner, so as to cut off the right side of the pinhole edge of the bill; the driving and trimming process on the left side of the lower surface of the bill refers to the driving and trimming process on the right side of the lower surface of the bill; thereby completing the transmission of the bill and the trimming of the pinhole edges on both sides of the bill.

[0038] The beneficial effect compared with the prior art is that, by adopting the above scheme, the upper conveying cutter part and the lower conveying cutter part of the present invention work simultaneously, and the bill is kept stably conveyed in the bill conveying channel through the rotational contact of the upper and lower conveying belts, and the two upper circular cutters and the left and right circular cutters on the lower channel plate cooperate to achieve the trimming operation of the pinhole edges on both sides of the bill, thereby ensuring that the bill trimming is neat and completely cut; the structure is simple, the operation is convenient, and it has good market application value.

[0039] It should be noted that the above-mentioned technical features are continuously combined with each other to form various embodiments not listed above, which are all deemed to be within the scope of the present invention; and, for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should fall within the scope of protection of the claims attached to the present invention. Claims and their equivalents are defined.

Claims

1. A bill trimming mechanism, comprising a bill conveying channel, a bill driving device for driving the bill forward is provided at the rear side of the bill conveying channel, a bill trimming device is provided at the front side of the bill conveying channel, and an upper channel plate and a lower channel plate are respectively installed at the upper and lower parts of the bill conveying channel; characterized in that: The bill trimming device comprises an upper conveying cutter portion installed on the upper part of the upper channel plate and a lower conveying cutter portion installed on the lower part of the lower channel plate, the upper conveying cutter portion comprises an upper belt frame, a slave conveying group 1, a main conveying group 1, an upper cutter rotating shaft and an upper circular cutter, two slave conveying groups 1 are installed on the upper left and right sides of the upper part of the upper channel plate through two upper belt frames, two main conveying groups 1 are respectively sleeved on the left and right sides of the upper cutter rotating shaft, the left and right ends of the upper cutter rotating shaft are respectively correspondingly penetrated on the left and right side plates of the upper channel plate through bearings 1, the slave conveying group 1 and the main conveying group 1 are connected by an upper conveying belt, and two upper circular cutters arranged on the upper cutter rotating shaft are sleeved; a square through hole 1 is opened at a position on the upper channel plate corresponding to the main conveying group 1, the upper conveying belt and the upper circular cutter protrude downward through the square through hole, and one end of the upper cutter rotating shaft is connected to the rotation drive assembly through an upper main gear; The lower conveying cutter section includes a left cutter group and a right cutter group located at the lower part of the lower channel plate and corresponding to and contacting the two upper circular cutters; The right cutter group comprises a right belt frame, a slave conveyor group 2, a main conveyor group 2, a lower conveyor belt and a lower cutter rotating shaft. The main conveyor group 2 and the slave conveyor group 2 are respectively arranged on the rear side and the front side of the right belt frame through the main belt rotating shaft 1 and the slave belt rotating shaft 2. The slave conveyor group 2 and the main conveyor group 2 are connected through the lower conveyor belt, and the two ends of the lower cutter rotating shaft located between the slave conveyor group 2 and the main conveyor group 2 are connected and installed on the right belt frame through two bearing shafts. A right circular cutter is sleeved on the middle part of the outer wall of the lower cutter rotating shaft; a right slave gear is sleeved on the right side of the main belt rotating shaft 1; the right slave gear is meshed with the upper main gear; the left cutter group and the right cutter group are left-right symmetrical structures; A second square through hole is also provided on the lower channel plate at a position corresponding to the second conveying group, and the lower conveying belt and the right circular cutter protrude upward through the second square through hole; the upper conveying belt and the lower conveying belt are in contact with each other to clamp the bill for transmission, and the lower end of the upper circular cutter and the upper end of the right circular cutter are in contact with each other in a staggered manner to trim the bill; The rotation drive assembly includes a motor mounting base, a driving motor, a driving main pulley, a driving slave pulley and a driving belt. The fixed end of the driving motor is fixed to the upper part of the right belt frame through the motor mounting base, and the working end of the driving motor is fixedly connected to the center of the driving main pulley. The driving main pulley is connected to the driving slave pulley disposed on the right end of the upper cutter shaft through a driving belt. The driving slave pulley and the upper main gear are both mounted on the same side of the outer wall of the upper cutter shaft to achieve synchronous rotation.

2. A bill trimming mechanism according to claim 1, characterized in that: The other end of the upper cutter shaft is sleeved with an upper slave gear, and the second main belt shaft in the left cutter assembly is sleeved with a lower slave gear, wherein the upper slave gear is meshed with the lower slave gear.

3. A bill trimming mechanism according to claim 1, characterized in that: Each slave conveyor group 1 includes a slave belt rotating shaft 1 and two upper slave belt pulleys, wherein the two upper slave belt pulleys are arranged left and right and sleeved on the outside of the slave belt rotating shaft 1, and the two ends of the slave belt rotating shaft 1 are installed on the upper belt frame through bearing 3; the slave conveyor group 2 has the same structure as the slave conveyor group 1; the main conveyor group 1 includes two upper main belt pulleys corresponding to the positions of the two upper slave belt pulleys, and the two upper main belt pulleys are arranged left and right and sleeved on the upper cutter rotating shaft, wherein an upper circular cutter is sleeved on the outer wall of the upper cutter rotating shaft and located between the two upper main belt pulleys; the main conveyor group 2 includes two lower main belt pulleys arranged left and right, and the two lower main belt pulleys are sleeved on the outside of the main belt rotating shaft 1, and the left and right ends of the main belt rotating shaft 1 are installed on the right belt frame through bearing 4.

4. A bill trimming mechanism according to claim 3, characterized in that: The outer wall of the lower cutter rotating shaft is located on the left and right sides of the right circular cutter and is also sleeved with a middle slave belt pulley. When the lower conveying belt rotates, the middle slave belt pulley is driven to rotate synchronously.

5. A bill trimming mechanism according to claim 3, characterized in that: The right end of the lower cutter rotating shaft passes through the right belt frame, and a middle slave gear is sleeved on the outside, and the middle slave gear is meshed with the upper main gear.

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