CN115817004A

CN115817004A - Security printing device for printing securities and printing method thereof

Info

Publication number: CN115817004A
Application number: CN202310140243.4A
Authority: CN
Inventors: 吴伟; 范琦
Original assignee: Nanjing Jianwei Science And Technology Co ltd
Current assignee: Wu Wei
Priority date: 2023-02-21
Filing date: 2023-02-21
Publication date: 2023-03-21
Anticipated expiration: 2043-02-21
Also published as: CN115817004B

Abstract

The invention relates to the technical field of security printing, in particular to a security printing device for printing securities and a printing method thereof. This device convenience of customers changes purpose-built stamp pole to the user of being convenient for prints different patterns, can carry out centering work simultaneously, thereby can avoid security paper the phenomenon of skew to appear in the printing, guarantees the normal clear of follow-up work, also can cut and the rolling work to the security that the printing finishes through this device, and it is simple convenient to change, can practice thrift user's time and manufacturing cost greatly, thereby improves the working efficiency.

Description

Security printing device for printing securities and printing method thereof

Technical Field

The invention relates to the technical field of security printing, in particular to a security printing device for printing securities and a printing method thereof.

Background

Securities, which are the collective term for multiple economic interest vouchers, also referred to as specialized kinds of products, are legal instruments used to prove a certain interest enjoyed by a ticket holder, and mainly include capital securities, currency securities, commodity securities, and the like. Securities in the narrow sense mainly refer to securities in the securities market, including property market products such as stocks, bond market products such as bonds, and derivative market products such as stock futures, options, interest rate futures, etc., a common printing device prints ink on the surface of paper to achieve the printing effect, but the printing mode of part of special securities is different, and the securities need to be pressed with grooves to achieve the unique printing effect, so the printing needs to use special printing equipment;

present special lithography apparatus of securities needs to be changed when printing different patterns in use, and the printing changes the roller, and it changes very loaded down with trivial details to can only carry out the centering to one side, thereby influence the follow-up work of printing, also can not cut and collect work to the securities that finish printing simultaneously, thereby extravagant a large amount of operating time and increase user's manufacturing cost, benefits are reduced.

Disclosure of Invention

The invention aims to provide a security printing device for printing securities and a printing method thereof, aiming at solving the problems that when the existing special printing equipment for securities provided by the background technology is used, different patterns need to be printed, a printing roller needs to be replaced, the replacement is very complicated, and only one side can be centered, so that the subsequent work of printing is influenced, and the printed securities cannot be cut and collected, so that a large amount of working time is wasted, the production cost of a user is increased, and the benefit is reduced.

In order to achieve the purpose, the invention provides the following technical scheme: a security printing device for printing securities and a printing method thereof comprise a shell, a feeding mechanism, a locking and replacing mechanism, a centering mechanism, a splitting mechanism and an unreeling mechanism, wherein a control panel is arranged in the middle of the shell, a first rotary roller is arranged at one end of the shell, a second rotary roller is arranged at one side of the first rotary roller, a printing roller is arranged in the middle of the shell, a pressing plate is arranged at the bottom end of the printing roller, both ends of the pressing plate are fixedly connected with the shell, one end of the pressing plate is connected with an auxiliary roller through a bearing, a third rotary roller is arranged at one side of the printing roller, a fourth rotary roller is arranged at one side of the third rotary roller, a fifth rotary roller is arranged at the top end of the fourth rotary roller, a replacing port is arranged in the middle of the shell, a splitting roller is arranged at one point of the shell, both ends of the shell are provided with material rollers, and one end of each material roller is fixedly connected with a first gear, the two ends of the shell are connected with second gears through bearings, the second gears are meshed with the first gears respectively, one side of the shell is connected with four groups of auxiliary wheels through bearings, one side of the shell is provided with a first motor, one side of the shell is provided with a transmission belt, the two ends of the first rotating roller and the fifth rotating roller are connected with the shell through bearings, one ends of the second rotating roller, the printing roller, the third rotating roller, the fourth rotating roller and the slitting roller are positioned outside the shell, one ends of the second rotating roller, the third rotating roller, the fourth rotating roller and the slitting roller are connected with the shell through bearings, the surface of the transmission belt is attached to the output end of the first motor, the surface of the rotating shaft of the second gear, the surface of the auxiliary wheel and one end of the second rotating roller, the printing roller, the fourth rotating roller and the slitting roller, one side of the replacing port is provided with a connecting push groove, the inside sliding connection who connects the groove that pushes away has the connection push pedal, it is corresponding with the one end of printing roller to change the mouth.

Preferably, the control end of the control panel is electrically connected with an external power supply, and the control end of the first motor is electrically connected with the control panel, so that a user can conveniently control the device to work.

Preferably, feed mechanism includes the paintbox, dyes box, material pipe, measuring pump, dyes cotton and shower nozzle, the inner wall fixedly connected with paintbox on casing top, the middle part fixedly connected with of casing dyes the box, and dyes the surface that the bottom of box is close to the printing roller, one side of paintbox is connected with material pipe, the surface of material pipe evenly is connected with the shower nozzle, and the bottom of shower nozzle all extends to the inside of dyeing the box, the bottom of dyeing the box is provided with dyes the cotton, and dyes the cotton and be close to the printing roller, the both ends of material pipe all are provided with the measuring pump, and the control end of measuring pump all with control panel electric connection, be convenient for paint the fuel to purpose-made stamp pole.

Preferably, the locking and replacing mechanism comprises a dryer, a rotary groove, a fixed rotary member, a first rotary wheel, fixed teeth, a movable block, a fixed rod, a connecting hinge rod, a first thread rotary rod, a first chute, a first slide block, a printing groove, a fixed groove, a special printing rod, a right-angle groove, a guide block and a second thread rotary rod, the dryer is arranged in the middle of the casing and is positioned between a third rotary roller and a fourth rotary roller, the rotary groove is formed in one end of the printing roller, the fixed rotary member is arranged at one end of the printing roller, one end of the fixed rotary member is fixedly connected with the casing, one side of the fixed rotary member is rotatably connected with the rotary groove, one side of the fixed rotary member is connected with the first rotary wheel through a bearing, the fixed teeth are formed in one end of the casing and are positioned outside the first rotary wheel, the movable block is arranged inside the fixed rotary member, one end of the fixed rotating piece is symmetrically and slidably connected with a fixed rod, one end of the fixed rod is connected with a connecting hinge rod through a rotating shaft, one end of the connecting hinge rod is connected with the movable block through a rotating shaft, one end of the movable block is connected with a first thread rotating rod through a bearing, one end of the first thread rotating rod penetrates through the fixed rotating piece and extends to the outside of the shell, one side of the fixed rotating piece is provided with two groups of first sliding grooves, the inside of each first sliding groove is slidably connected with a first sliding block, one end of each first sliding block is fixedly connected with the fixed rod respectively, the surface of the printing roller is uniformly provided with printing grooves, the inner wall of the printing roller is uniformly and fixedly connected with a fixed groove, the fixed grooves respectively correspond to the printing grooves, the inside of the fixed groove is slidably connected with a special printing rod, one end of each special printing rod penetrates through the printing grooves respectively, and the inside of the fixed groove is uniformly provided with right-angle grooves, all sliding connection has the guide block in the inside in right angle groove, and the one end of guide block all with purpose-built stamp pole fixed connection, the one end of fixed slot all has second screw thread bull stick through threaded connection, and the one end of second screw thread bull stick is laminated with the one end of special stamp pole mutually, the control end and the control panel electric connection of drying-machine, the user of being convenient for changes special stamp pole, can print different patterns.

Preferably, centering mechanism includes bottom plate, shifting chute, thread bush, reverse threaded rod, second motor, spread groove, connecting rod, second slip, second slider and centering board, the middle part fixedly connected with bottom plate of casing, the shifting chute has been seted up at the middle part of bottom plate, the inside sliding connection of shift chute has two sets of thread bushes, the inside of shift chute is provided with reverse threaded rod, and reverse threaded rod is connected through the screw thread with the thread bush, the surperficial screw thread opposite direction of reverse threaded rod, the one end of bottom plate is provided with the second motor, and the output of second motor and the one end fixed connection of reverse threaded rod, the one end of reverse threaded rod is connected with the inner wall of shift chute through the bearing, the second slides has all been seted up at the both ends of bottom plate, the gliding one end of second has all been seted up the spread groove, and the one end of spread groove all is connected with the shifting chute, the inside of spread groove all fixedly connected with the connecting rod, the inside all sliding connection of second has two sets of second slider, the one end all fixed connection centering board of second slider, the second slider is located between the second slider and the second roll and the normal control board, the security control board, the control board is in addition.

Preferably, the slitting mechanism includes cutting wheel, cutting plate, adjustment tank, regulating block, regulation pole, scale mark, pinch rolls and step motor, the bottom of dividing the cutting roll is provided with the cutting plate, and the both ends and the casing fixed connection of cutting plate, the surface of dividing the cutting roll evenly is provided with the cutting wheel, the scale mark has been seted up on the surface of dividing the cutting roll, three groups of adjustment tanks have evenly been seted up on the surface of dividing the cutting roll, all sliding connection in the inside of adjustment tank has the regulating block, and the one end of regulating block all respectively with cutting wheel fixed connection, the one end of regulating block all has the regulation pole through threaded connection, and the one end of adjusting the pole all offsets with the inner wall of adjustment tank, the one end of cutting plate is provided with the pinch rolls, and the one end of pinch rolls is connected with the casing through the bearing, the one end of casing is provided with step motor, and step motor's output and the one end fixed connection of pinch rolls, step motor's control end and control panel electric connection are convenient for cut work.

Preferably, the unwinding mechanism comprises a winding drum, a winding groove, a supporting plate, a fixing member, a torsion spring, a supporting member, a third threaded rotating rod, an electric push rod, a fixed arc plate, a second rotating wheel, a third sliding groove, a third sliding block, a guide groove and a guide plate, wherein the winding drum is uniformly arranged on the surface of one group of material rollers, the winding groove is uniformly arranged on the surface of each material roller, the supporting plate is arranged inside each winding groove, the fixing member is arranged at one end of each supporting plate, the two ends of each fixing member are fixedly connected with the inner wall of each winding groove, the torsion spring is arranged at one end of each supporting plate, the two ends of each torsion spring are respectively and fixedly connected with the supporting plate and the fixing member, the supporting member is slidably connected inside each material roller, the middle part of each supporting member is uniformly inclined, the two groups of third sliding grooves are arranged at the two ends of the casing, and the third sliding block is slidably connected inside each third sliding groove, the inner wall of the third chute is symmetrically provided with guide grooves, the inner parts of the guide grooves are all connected with guide plates in a sliding manner, one ends of the guide plates are all fixedly connected with a third sliding block respectively, two ends of the material roller are all connected with the third sliding block through bearings, one end of the material roller is all connected with a third threaded rotating rod through threads, one end of the third threaded rotating rod is all connected with one end of a supporting part through a bearing, the other end of the third threaded rotating rod penetrates through the material roller and extends to the outside of the third sliding block, two ends of the casing are all provided with two groups of electric push rods, the output of each electric push rod is fixedly connected with a fixed arc plate, the fixed arc plates are all semicircular, the inner parts of the fixed arc plates are all uniformly connected with second rotating wheels through bearings, the surfaces of the second rotating wheels are all attached to the material roller, and the control ends of the electric push rods are all electrically connected with a control panel, facilitating the release and collection of the security paper.

The printing method of the device comprises the following steps:

the method comprises the following steps: the printing roller is fixed by a first thread rotating rod, a fixing rod can be inserted into the fixed teeth through the first thread rotating rod and a connecting hinge rod, so that the printing roller is locked, the user rotates a second thread rotating rod at the moment, then the specially-made printing rod is taken down and replaced by the required specially-made printing rod, then the specially-made printing rod is fixed, and the printing roller is unlocked by rotating the first thread rotating rod, and the replacement is finished at the moment;

step two: fixing the security paper, firstly rotating a third threaded rotating rod by a user to enable a resisting part not to be abutted against a resisting plate, then collecting the resisting plate inside a material roller, respectively sleeving a security paper roll and a winding drum on the surfaces of two groups of material rollers to enable the security paper roll and the winding drum to be in proper positions, then rotating the third threaded rotating rod to fix the security paper roll and the winding drum, then placing the material roller at two ends of a shell by the user, positioning and guiding through a third sliding block and a guide plate to enable the material roller to be meshed with a first gear, and then enabling a fixed arc plate to rise until the fixed arc plate is attached to the material roller;

step three: the security paper is centered, the security paper passes through the device, one end of the security paper is fixed with the winding drum, a user controls the second motor to work, and the security paper can be centered through the threaded sleeve, the reverse threaded rod, the connecting rod and the centering plate;

step four: the cutting space is adjusted, a user can move the cutting wheel after rotating the adjusting rod, the cutting space is controlled through the scale mark, and the cutting wheel is fixed through rotating the adjusting rod after the adjustment is finished;

step five: printing, the user passes through this device work of control panel control, the output of first motor passes through the drive belt, the second gear, first gear and auxiliary wheel drive material roller, the second changes the roller, the printing roller, the fourth changes the roller and cuts the roller rotation, security paper removes this moment, the measuring pump spouts the pigment of paintbox inside to the surface of dying cotton through the shower nozzle, scribble the purpose-built stamp rod of printing roller inside through dying cotton, carry out printing work when carrying out the impression to security paper through purpose-built stamp rod 38, thereby form purpose-built security, the drying-machine can carry out fast drying work to the pigment, can control the interval of cutting roller pressure through step motor and step motor, the work is cut to pivoted branch cutting roller and cutting wheel, a set of material roller puts paper this moment, another group material roller carries out the collection work.

Compared with the prior art, the invention has the beneficial effects that:

the user rotates the first threaded rotating rod, the fixed rod can be inserted into the fixed teeth through the first threaded rotating rod and the connecting hinge rod, so that the printing roller is locked, the user rotates the second threaded rotating rod at the moment, then the specially-made printing rod is taken down and replaced by the required specially-made printing rod, then the specially-made printing rod is fixed, the printing roller is unlocked through rotating the first threaded rotating rod, the replacement is finished, so that the specially-made printing rod is very simple and convenient for the user to replace, the user rotates the third threaded rotating rod firstly, so that the abutting piece is not abutted against the abutting plate, the abutting plate is collected in the material roller, the surface of the two sets of material rollers of the security paper roll and the surface of the two sets of material rollers of the security paper roll sleeve are respectively positioned at the proper position, then the third threaded rotating rod is rotated, so that the abutting piece is abutted against the abutting plate, the security paper roll and the material roller are fixed through the abutting plate, and then the material rollers are placed at the two ends of the machine shell, the stock roll is meshed with the first gear by the third slide block and the guide plate, then the fixed arc plate rises until the stock roll is attached, at the moment, the installation is finished, a user passes the stock paper through the device, one end of the stock paper is fixed with the winding drum, the user controls the second motor to work, the stock paper can be centered by the thread sleeve, the reverse threaded rod, the connecting rod and the centering plate, so that the offset condition of the stock paper is avoided, the subsequent cutting and collecting work is convenient, the dismounting work of the winding drum is convenient for the user, then the user adjusts the cutting interval, the cutting wheel can be moved after the user rotates the adjusting rod, the cutting interval is controlled by the scale mark, the stock paper is fixed by rotating the adjusting rod after the adjustment is finished, the cutting interval is convenient to adjust, the preparation is finished at the moment, and the user controls the device to print work by the control plate, the output of first motor passes through the drive belt, the second gear, first gear and auxiliary wheel drive the material roller, the second changes the roller, the printing roller, fourth changes the roller and cuts the roller rotation, securities paper removes this moment, the metering pump begins work when the printing roller rotates, the metering pump spouts the pigment inside the pigment case to the surface of dyeing cotton through the shower nozzle, scribble the purpose-built stamp rod inside the printing roller through dyeing cotton, thereby be convenient for the printing work of purpose-built stamp rod, carry out printing work when carrying out the impression to securities paper through purpose-built stamp rod 38, thereby form purpose-built securities, the drying-machine can carry out quick drying work to the pigment, step motor's output drives the pressure and cuts the roller work simultaneously, the interval of cutting the roller pressure cutting can be controlled through step motor's rotational speed, the pivoted is cut the roller and is driven and is rotated, cut the work through the cutting wheel, a set of material roller puts paper, another set of material roller carries out the collection work, this device convenience of user carries out the purpose-built rod, thereby be convenient for the user to print different changes, thereby can avoid the security paper centering phenomenon in the printing, thereby the normal production of the offset phenomenon can also appear and the benefit of accomplishing the improvement through simple and finishing of printing.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic cross-sectional perspective view of the present invention;

FIG. 3 is a schematic sectional perspective view of the housing of the present invention;

FIG. 4 is a schematic sectional perspective view of a loading mechanism according to the present invention;

FIG. 5 is a schematic sectional perspective view of the rotary trough and stationary teeth of the present invention;

FIG. 6 is a schematic sectional perspective view of the fixed rotating member and the first sliding groove of the present invention;

FIG. 7 is a schematic cross-sectional perspective view of a printing roll, a fixed slot and a right angle slot of the present invention;

FIG. 8 is a schematic sectional perspective view of the bottom plate and the connecting slot of the present invention;

FIG. 9 is a schematic sectional perspective view of a slitting roller and an adjusting block of the present invention;

FIG. 10 is a schematic sectional perspective view of the feed roll and the fixed arc plate of the present invention;

FIG. 11 is a schematic sectional perspective view of a feed roll and a take-up groove of the present invention;

fig. 12 is a schematic sectional perspective view of the third slide groove and the connecting push groove of the present invention.

In the figure: 1. a housing; 2. a control panel; 3. a first rotating roller; 4. a second rotating roller; 5. a printing roller; 6. pressing a plate; 7. an auxiliary roller; 8. a third roller; 9. a fourth rotating roller; 10. a fifth rotating roller; 11. replacing the port; 12. a slitting roller; 13. a material roller; 14. a first gear; 15. a second gear; 16. an auxiliary wheel; 17. a first motor; 18. a transmission belt; 19. a paint box; 20. dyeing boxes; 21. a material pipe; 22. a metering pump; 23. dyeing cotton; 24. a spray head; 25. a dryer; 26. rotating the groove; 27. fixing the rotating piece; 28. a first runner; 29. fixing teeth; 30. a movable block; 31. fixing the rod; 32. connecting a hinge rod; 33. a first threaded rotating rod; 34. a first chute; 35. a first slider; 36. printing a groove; 37. fixing grooves; 38. specially manufacturing the printing rod; 39. a right-angle groove; 40. a guide block; 41. a second threaded rotating rod; 42. a base plate; 43. a moving groove; 44. a threaded sleeve; 45. a reverse threaded rod; 46. a second motor; 47. connecting grooves; 48. a connecting rod; 49. a second sliding; 50. a second slider; 51. a centering plate; 52. cutting a plate; 53. an adjustment groove; 54. an adjusting block; 55. adjusting a rod; 56. scale lines; 57. a press-cutting roller; 58. a stepping motor; 59. winding the roll; 60. collecting a groove; 61. a resisting plate; 62. a fixing member; 63. a torsion spring; 64. a resisting part; 65. a third threaded rotating rod; 66. an electric push rod; 67. fixing the arc plate; 68. a second runner; 69. a third chute; 70. a third slider; 71. a guide groove; 72. a guide plate; 73. connecting the push groove; 74. connecting a push plate; 75. and (4) cutting wheels.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-12, an embodiment of the present invention is shown:

a security printing device for printing securities and a printing method thereof comprise a machine shell 1, a feeding mechanism, a locking and replacing mechanism, a centering mechanism, a splitting mechanism and an unreeling mechanism, wherein a control panel 2 is arranged in the middle of the machine shell 1, a first rotating roller 3 is arranged at one end of the machine shell 1, a second rotating roller 4 is arranged at one side of the first rotating roller 3, a printing roller 5 is arranged in the middle of the machine shell 1, a pressing plate 6 is arranged at the bottom end of the printing roller 5, two ends of the pressing plate 6 are fixedly connected with the machine shell 1, one end of the pressing plate 6 is connected with an auxiliary roller 7 through a bearing, a third rotating roller 8 is arranged at one side of the printing roller 5, a fourth rotating roller 9 is arranged at one side of the third rotating roller 8, a fifth rotating roller 10 is arranged at the top end of the fourth rotating roller 9, a replacing opening 11 is arranged in the middle of the machine shell 1, a slitting roller 12 is arranged at one point of the machine shell 1, and material rollers 13 are arranged at two ends of the machine shell 1, one end of the material roller 13 is fixedly connected with a first gear 14, two ends of the machine shell 1 are connected with second gears 15 through bearings, the second gears 15 are respectively meshed with the first gears 14, one side of the machine shell 1 is connected with four groups of auxiliary wheels 16 through bearings, one side of the machine shell 1 is provided with a first motor 17, one side of the machine shell 1 is provided with a transmission belt 18, two ends of the first rotary roller 3 and the fifth rotary roller 10 are connected with the machine shell 1 through bearings, one ends of the second rotary roller 4, the printing roller 5, the third rotary roller 8, the fourth rotary roller 9 and the slitting roller 12 are positioned outside the machine shell 1, one ends of the second rotary roller 4, the third rotary roller 8, the fourth rotary roller 9 and the slitting roller 12 are connected with the machine shell 1 through bearings, the surface of the transmission belt 18 is connected with the output end of the first motor 17, the rotary shaft of the second gears 15, the surface of the auxiliary wheels 16, the second rotary roller 4, the printing roller 5, one ends of the fourth rotating roller 9 and the slitting roller 12 are attached, one side of the replacing opening 11 is provided with a connecting push groove 73, the connecting push groove 73 is internally connected with a connecting push plate 74 in a sliding manner, and the replacing opening 11 corresponds to one end of the printing roller 5;

referring to fig. 2, 4, 5, 6 and 7, in the present embodiment, the locking and replacing mechanism includes a dryer 25, a rotary slot 26, a fixed rotary member 27, a first rotary wheel 28, a fixed tooth 29, a movable block 30, a fixed rod 31, a connecting hinge rod 32, a first screw rod 33, a first sliding slot 34, a first sliding block 35, a printing slot 36, a fixed slot 37, a special printing rod 38, a right-angle slot 39, a guide block 40 and a second screw rod 41, the dryer 25 is disposed in the middle of the casing 1, the dryer 25 is disposed between the third rotary roller 8 and the fourth rotary roller 9, the rotary slot 26 is disposed at one end of the printing roller 5, the fixed rotary member 27 is disposed at one end of the printing roller 5, one end of the fixed rotary member 27 is fixedly connected to the casing 1, one side of the fixed rotary member 27 is rotatably connected to the rotary slot 26, one side of the fixed rotary member 27 is connected to the first rotary wheel 28 through a bearing, one end of the casing 1 is disposed with the fixed tooth 29, the fixed teeth 29 are located outside the first rotating wheel 28, the movable block 30 is arranged inside the fixed rotating member 27, one end of the fixed rotating member 27 is symmetrically and slidably connected with a fixed rod 31, one end of the fixed rod 31 is connected with a connecting hinge rod 32 through a rotating shaft, one end of the connecting hinge rod 32 is connected with the movable block 30 through a rotating shaft, one end of the movable block 30 is connected with a first threaded rotating rod 33 through a bearing, one end of the first threaded rotating rod 33 penetrates through the fixed rotating member 27 and extends to the outside of the machine shell 1, one side of the fixed rotating member 27 is provided with two groups of first sliding grooves 34, the inside of each first sliding groove 34 is slidably connected with a first sliding block 35, one end of each first sliding block 35 is fixedly connected with the fixed rod 31, the surface of the printing roller 5 is uniformly provided with printing grooves 36, the inner wall of the printing roller 5 is uniformly and fixedly connected with fixed grooves 37, and the fixed grooves 37 correspond to the printing grooves 36 respectively, the inside of the fixed groove 37 is slidably connected with a special printing rod 38, one end of the special printing rod 38 respectively penetrates through the printing groove 36, the inside of the fixed groove 37 is uniformly provided with a right-angle groove 39, the inside of the right-angle groove 39 is slidably connected with a guide block 40, one end of the guide block 40 is fixedly connected with the special printing rod 38, one end of the fixed groove 37 is connected with a second threaded rotating rod 41 through threads, one end of the second threaded rotating rod 41 is attached to one end of the special printing rod 38, the control end of the dryer 25 is electrically connected with the control panel 2, a user rotates the first threaded rotating rod 33, the first threaded rotating rod 33 drives the movable block 30 to move towards the middle part of the fixed rotating piece 27, and at the moment, the fixed rod 31 can move towards one side away from each other through the first threaded rotating rod 33 and the connecting hinge rod 32, the fixing rod 31 is inserted into the fixing teeth 29, the printing roller 5 is locked, the user rotates the second threaded rotary rod 41 to enable one end of the second threaded rotary rod 41 not to be abutted against the special printing rod 38, the user can take the special printing rod 38 down from the inside of the fixing groove 37, the user sequentially takes the special printing rod down and then replaces the special printing rod 38 with the required special printing rod 38, the special printing rod 38 is conveniently positioned and guided through the right-angle groove 39 and the guide block 40, the second threaded rotary rod 41 is rotated to fix the special printing rod, the printing roller 5 is unlocked by reversely rotating the first threaded rotary rod 33, the replacement is finished, and therefore the user can replace the special printing rod 38 simply and conveniently, the user can replace the special printing rod 38 conveniently and can print different patterns;

referring to fig. 2 and 8, in the present embodiment, the centering mechanism includes a bottom plate 42, a moving slot 43, a threaded sleeve 44, a reverse threaded rod 45, a second motor 46, a connecting slot 47, a connecting rod 48, a second sliding block 49, a second slider 50 and a centering plate 51, the middle portion of the housing 1 is fixedly connected to the bottom plate 42, the middle portion of the bottom plate 42 is opened with the moving slot 43, two sets of threaded sleeves 44 are slidably connected to the inside of the moving slot 43, the reverse threaded rod 45 is disposed inside the moving slot 43, the reverse threaded rod 45 is connected to the threaded sleeve 44 through threads, the surface threads of the reverse threaded rod 45 are opposite in direction, one end of the bottom plate 42 is provided with the second motor 46, the output end of the second motor 46 is fixedly connected to one end of the reverse threaded rod 45, one end of the reverse threaded rod 45 is connected to the inner wall of the moving slot 43 through a bearing, both ends of the bottom plate 42 are provided with the second sliding block 49, one end of the second sliding block 49 is provided with the connecting slot 47, one end of the connecting slot 47 is connected to the moving slot 43, the connecting rod 47 is fixedly connected to the connecting rod 48, the second sliding block 50, the second sliding rod 50 is connected to the moving slot 50, the sliding rod 50 is connected to the moving slot 45, the second motor 43 and the sliding roller 51, the moving roller 46, the moving roller 50, the sliding roller 46 and the sliding roller 50, the sliding roller 46 are electrically connected to the sliding roller, the sliding roller 4, the movable centering plate 51 can be used for centering the security paper, so that the security paper is prevented from deviating, the security paper is ensured to be in the central position, and the subsequent work is ensured to be normally carried out;

referring to fig. 2 and 4, in this embodiment, the feeding mechanism includes a pigment box 19, a dye box 20, a material tube 21, a metering pump 22, a dye cotton 23 and a nozzle 24, the pigment box 19 is fixedly connected to an inner wall of the top end of the casing 1, the dye box 20 is fixedly connected to the middle of the casing 1, the bottom end of the dye box 20 is close to the surface of the printing roller 5, the material tube 21 is connected to one side of the pigment box 19, the nozzle 24 is uniformly connected to the surface of the material tube 21, the bottom end of the nozzle 24 extends into the dye box 20, the dye cotton 23 is arranged at the bottom end of the dye box 20, the dye cotton 23 is close to the printing roller 5, the metering pump 22 is arranged at both ends of the material tube 21, the control end of the metering pump 22 is electrically connected to the control plate 2, the metering pump 22 sprays pigment in the pigment box 19 to the surface of the dye cotton 23 through the nozzle 24, and the dye cotton 23 paints the specially-made printing rod 38 in the printing roller 5, so as to facilitate the printing work of specially-made printing rod 38, and paint the specially-made fuel;

referring to fig. 2, 3 and 9, in the present embodiment, the slitting mechanism includes a slitting wheel 75, a slitting plate 52, an adjusting groove 53, an adjusting block 54, an adjusting rod 55, a scale mark 56, a pressing roller 57 and a stepping motor 58, the slitting plate 52 is disposed at the bottom end of the slitting roller 12, two ends of the slitting plate 52 are fixedly connected with the casing 1, the slitting wheel 75 is uniformly disposed on the surface of the slitting roller 12, the scale mark 56 is disposed on the surface of the slitting roller 12, three groups of adjusting grooves 53 are uniformly disposed on the surface of the slitting roller 12, the adjusting blocks 54 are slidably connected inside the adjusting grooves 53, one ends of the adjusting blocks 54 are respectively and fixedly connected with the slitting wheel 75, one ends of the adjusting blocks 54 are respectively connected with the adjusting rod 55 through threads, and one end of the adjusting rod 55 is abutted against the inner wall of the adjusting groove 53, one end of the cutting plate 52 is provided with a press-cutting roller 57, one end of the press-cutting roller 57 is connected with the machine shell 1 through a bearing, one end of the machine shell 1 is provided with a stepping motor 58, the output end of the stepping motor 58 is fixedly connected with one end of the press-cutting roller 57, the control end of the stepping motor 58 is electrically connected with the control panel 2, a user can move the cutting wheel 75 after rotating the adjusting rod 55, the cutting space is controlled through the scale mark 56, the cutting wheel is fixed through rotating the adjusting rod 55 after adjustment is finished, the cutting space is convenient to adjust, during operation, the output end of the stepping motor 58 drives the press-cutting roller 57 to work, the press-cutting space of the press-cutting roller 57 can be controlled through the rotating speed of the stepping motor 58, the rotating cut roller 12 drives the cutting wheel 75 to rotate, and the cutting work is performed through the cutting wheel 75, so that the cutting work is convenient;

referring to fig. 2, 3, 10, 11 and 12, in the embodiment, the unwinding mechanism includes a winding drum 59, a winding slot 60, a resisting plate 61, a fixing member 62, a torsion spring 63, a resisting member 64, a third threaded rotating rod 65, an electric push rod 66, a fixed arc plate 67, a second rotating wheel 68, a third sliding slot 69, a third sliding block 70, a guide slot 71 and a guide plate 72, the winding drum 59 is uniformly disposed on the surface of a set of material rollers 13, the winding slot 60 is uniformly disposed on the surface of the material rollers 13, the resisting plate 61 is disposed inside the winding slot 60, the fixing member 62 is disposed at one end of the resisting plate 61, both ends of the fixing member 62 are fixedly connected with the inner wall of the winding slot 60, the torsion spring 63 is disposed at one end of the resisting plate 61, both ends of the torsion spring 63 are fixedly connected with the resisting plate 61 and the fixing member 62, the resisting member 64 is slidably connected inside the material rollers 13, and the middle of the resisting member 64 is uniform, two sets of third sliding grooves 69 are formed at both ends of the casing 1, a third sliding block 70 is slidably connected inside each third sliding groove 69, guide grooves 71 are symmetrically formed on the inner walls of the third sliding grooves 69, guide plates 72 are slidably connected inside each guide groove 71, one ends of the guide plates 72 are fixedly connected with the third sliding blocks 70 respectively, both ends of the material roller 13 are connected with the third sliding blocks 70 through bearings, one end of the material roller 13 is connected with a third threaded rotating rod 65 through a thread, one end of the third threaded rotating rod 65 is connected with one end of the abutting part 64 through a bearing, the other end of the third threaded rotating rod 65 penetrates through the material roller 13 and extends to the outside of the third sliding block 70, two sets of electric push rods 66 are arranged at both ends of the casing 1, a fixed arc plate 67 is fixedly connected to an output of the electric push rods 66, the fixed arc plate 67 is semicircular, the inside of the fixed arc plate 67 is uniformly connected with a second rotating wheel 68 through a bearing, the surfaces of the second rotating wheels 68 are attached to the material rollers 13, the control ends of the electric push rods 66 are electrically connected to the control panel 2, the user rotates the third threaded rotating rod 65, so that the third threaded rotating rod 65 drives the abutting pieces 64 to move, at this time, the abutting pieces 64 are not abutted to the abutting plates 61, at this time, the abutting plates 61 rotate towards the inside of the material rollers 13 under the action of the torsion springs 63, the user respectively sleeves the security paper rolls and the winding cylinders 59 on the surfaces of the two groups of material rollers 13 to be in proper positions, then the third threaded rotating rod 65 is rotated reversely, at this time, the inclined surfaces of the abutting pieces 64 are abutted to the abutting plates 61, so that the abutting plates 61 rotate outwards, and simultaneously the torsion springs 63 are compressed, until the resisting plate 61 is abutted against the security paper roll and the winding drum 59, the security paper roll and the winding drum 59 are fixed through the resisting plate 61, then the material rollers 13 are placed at two ends of the machine shell 1 by a user, so that the third sliding block 70 slides in the third sliding groove 69, the third sliding block 70 and the guide plate 72 are used for positioning and guiding, the material rollers 13 are meshed with the first gear 14, then the electric push rod 66 is controlled to work, so that the fixed arc plate 67 rises until the fixed arc plate is attached to the material rollers 13, at the moment, after the installation is finished, one group of material rollers 13 are used for discharging paper, and the other group of material rollers 13 are used for collecting paper, so that the user can conveniently disassemble and assemble the winding drum 59, and release and collect the security paper;

it should be noted that the control end of the control panel 2 is electrically connected to an external power supply, and the control end of the first motor 17 is electrically connected to the control panel 2, so that a user can conveniently control the device to work;

the printing method of the device comprises the following steps:

the method comprises the following steps: the user rotates the first threaded rotating rod 33, the fixed rod 31 can be inserted into the fixed teeth 29 through the first threaded rotating rod 33 and the connecting hinge rod 32, so that the printing roller 5 is locked, at the moment, the user rotates the second threaded rotating rod 41, then the special printing rod 38 is taken down and replaced by the required special printing rod 38, then the special printing rod is fixed, and the printing roller 5 is unlocked through rotating the first threaded rotating rod 33, at the moment, the replacement is finished;

step two: fixing the security paper, firstly rotating the third threaded rotating rod 65 by a user to enable the abutting part 64 not to abut against the abutting plate 61, then receiving the abutting plate 61 in the material roller 13, respectively sleeving the security paper roll and the winding drum 59 on the surfaces of the two groups of material rollers 13 to enable the security paper roll and the winding drum 59 to be in proper positions, then rotating the third threaded rotating rod 65 to fix the security paper roll and the winding drum 59, then placing the material rollers 13 at two ends of the machine shell 1 by the user, positioning and guiding through the third sliding block 70 and the guide plate 72 to enable the material rollers 13 to be meshed with the first gear 14, and then enabling the fixed arc plate 67 to rise until the fixed arc plate is attached to the material rollers 13;

step three: in the centering process, the security paper passes through the device, one end of the security paper is fixed with the winding drum 59, a user controls the second motor 46 to work, and the security paper can be centered through the threaded sleeve 44, the reverse threaded rod 45, the connecting rod 48 and the centering plate 51;

step four: the cutting distance is adjusted, after a user rotates the adjusting rod 55, the cutting wheel 75 can be moved, the cutting distance is controlled through the scale lines 56, and after the adjustment is finished, the adjusting rod 55 is rotated to fix the cutting wheel;

step five: printing, a user controls the device to work through the control panel 2, the output of the first motor 17 drives the material roller 13, the second rotating roller 4, the printing roller 5, the fourth rotating roller 9 and the slitting roller 12 to rotate through the driving belt 18, the second gear 15, the first gear 14 and the auxiliary wheel 16, the security paper moves at the moment, the metering pump 22 sprays the pigment inside the pigment box 19 to the surface of the dyeing cotton 23 through the spray head 24, the special printing rod 38 inside the printing roller 5 is coated through the dyeing cotton 23, the security paper is printed while being stamped through the special printing rod 38, so that special security paper is formed, the dryer 25 can quickly dry the pigment, the pressing and cutting intervals of the pressing and cutting roller 57 can be controlled through the stepping motor 58 and the stepping motor 58, the rotating slitting roller 12 and the slitting wheel 75 perform slitting work, at the moment, one group of material rollers 13 discharges paper, and the other group of material rollers 13 receives paper.

The working principle is as follows: when the user uses the device, the user pushes the connecting push plate 74 first, then passes the hand through the replacing opening 11 to the inside of the printing roller 5, the user rotates the first screw rod 33, the first screw rod 33 drives the movable block 30 to move towards the middle of the fixed rotating member 27, at this time, the fixed rod 31 can move towards the side far away from each other through the first screw rod 33 and the connecting hinge rod 32, so that the fixed rod 31 is inserted into the inside of the fixed teeth 29, and the printing roller 5 is locked, at this time, the user rotates the second screw rod 41, so that one end of the second screw rod 41 is not interfered with the special printing rod 38, at this time, the user can take the special printing rod 38 off from the inside of the fixed groove 37, then the user sequentially takes the special printing rod off and then changes the special printing rod 38 into the required special printing rod 38, the special printing rod 38 is positioned and guided through the right-angle groove 39 and the guide block 40, then the second screw rod 41 is rotated to fix the special printing rod 38, the special printing rod 61 and then the special printing rod 61 is unlocked through the reverse rotation of the first screw rod 33, at this time, so that the third screw rod 61 and the third screw rod 59 is rotated to rotate the third paper roll 64, so that the third paper roll 64 and the third paper roll 64 are conveniently pressed against the special paper roll 64, at this time, and the third paper roll 64 are rotated, and the third paper roll 61 and the roll 64, and the third roll 61 are rotated by the reverse rotation bar 13, and the reverse rotation bar 61, and the reverse rotation bar 13, and the reverse rotation of the security roll 61, and the security roll are conveniently pressed by the reverse rotation bar 59, and the reverse rotation of the security roll. Then the user places the material roller 13 at two ends of the machine case 1 again, so that the third sliding block 70 slides in the third sliding groove 69, the third sliding block 70 and the guide plate 72 are used for positioning and guiding, the material roller 13 is meshed with the first gear 14, then the electric push rod 66 is controlled to work, so that the fixed arc plate 67 rises until the fixed arc plate is jointed with the material roller 13, at this time, the installation is finished, so that the user can conveniently assemble and disassemble the winding drum 59, the user passes the security paper through the device to be positioned at the top end of the first rotating roller 3, the bottom end of the second rotating roller 4, the top end of the auxiliary roller 7, the top end of the third rotating roller 8, between the fourth rotating roller 9 and the fifth rotating roller 10 and the top end of the cutting plate 52, and then fixes one end of the winding drum 59, the user controls the second motor 46 to work, the output end of the second motor 46 drives the reverse threaded rod 45 to rotate, and the reverse threaded rod 45 can enable the threaded sleeve 44 to move in the moving groove 43, the moving groove 43 drives the second slide block 50 and the centering plate 51 to move through the connecting rod 48, the moving centering plate 51 can center the security paper, thereby avoiding the situation that the security paper deviates, facilitating the subsequent cutting and collecting work, then the user adjusts the cutting space again, after the user rotates the adjusting rod 55, the user can move the cutting wheel 75, the cutting space is controlled through the scale mark 56, after the adjustment is finished, the security paper is fixed through the rotating adjusting rod 55, facilitating the adjustment of the cutting space, at the moment, the user controls the device to print through the control panel 2, the output of the first motor 17 drives the material roller 13, the second rotating roller 4, the printing roller 5, the fourth rotating roller 9 and the cutting roller 12 to rotate through the driving belt 18, the second gear 15, the first gear 14 and the auxiliary wheel 16, at the moment, the security paper moves, the metering pump 22 starts to work when the printing roller 5 rotates, the metering pump 22 sprays the pigment inside the pigment box 19 to the surface of the dye cotton 23 through the spray head 24, the special printing rod 38 inside the printing roller 5 is coated through the dye cotton 23, so that the printing work of the special printing rod 38 is facilitated, during printing, the printing work is performed while the security paper is imprinted through the special printing rod 38, so that special securities are formed, the dryer 25 can perform quick drying work on the pigment, meanwhile, the output end of the stepping motor 58 drives the pressure cutting roller 57 to work, the pressing and cutting distance of the pressure cutting roller 57 can be controlled through the rotating speed of the stepping motor 58, the rotating slitting roller 12 drives the cutting wheel 75 to rotate, the slitting work is performed through the cutting wheel 75, one set of material rollers 13 discharges the paper, the other set of material rollers 13 performs paper collecting work, the device is convenient for a user to replace the special printing rod 38, so that the user can print different patterns conveniently, meanwhile, the centering work can be performed, so that the phenomenon that the security paper deviates in printing can be avoided, the normal operation of follow-up work can be ensured, the security paper rolling work and the rolling work of the device can be also performed, the replacement of the security paper rolling and the device can be replaced, and the device can greatly save the production cost of the user, thereby greatly improving the convenience of the production cost and the convenience of the user.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a securities printing device for printing securities, its characterized in that, includes casing (1), feed mechanism, locking change mechanism, centering mechanism, cutting mechanism and unwinding mechanism, the middle part of casing (1) is provided with control panel (2), the one end of casing (1) is provided with first commentaries on classics roller (3), one side of first commentaries on classics roller (3) is provided with second commentaries on classics roller (4), the middle part of casing (1) is provided with printing roller (5), the bottom of printing roller (5) is provided with clamp plate (6), and the both ends of clamp plate (6) all with casing (1) fixed connection, the one end of clamp plate (6) is connected with supplementary roller (7) through the bearing, one side of printing roller (5) is provided with third commentaries on classics roller (8), one side of third commentaries on classics roller (8) is provided with fourth commentaries on classics roller (9), the top of fourth commentaries on classics roller (9) is provided with fifth commentaries on classics roller (10), opening (11) have been seted up in the middle part of casing (1), the one point of casing (1) is provided with branch change roller (12), the casing (1) the two fixed gear wheel (13) all are provided with first material wheel through the bearing and the second commentaries on classics roller (15) and the gear respectively, the both ends of being connected with second commentaries on classics roller (14), one side of casing (1) is connected with four sets of auxiliary wheel (16) through the bearing, one side of casing (1) is provided with first motor (17), one side of casing (1) is provided with drive belt (18), first roller (3) of changeing all are connected with casing (1) through the bearing with the fifth both ends of changeing roller (10), the second is changeed roller (4), printing roller (5), third and is changeed roller (8), fourth and changes roller (9) and cut the outside that the one end of roller (12) all is located casing (1), the second is changeed roller (4), third and is changeed roller (8), fourth and changes roller (9) and cut the one end of roller (12) and all is connected with casing (1) through the bearing, the surface and the second of the output of drive belt (18) and first motor (17), the pivot of second gear (15), the surface and the second of auxiliary wheel (16) change roller (4), printing roller (5), fourth change roller (9), cut the one end of roller (12) change the one side of laminating mutually and the push pedal (73) is connected with push pedal (73) and push pedal (73) that push pedal (73) is connected.

2. A security printing device for printing security documents as claimed in claim 1, characterized in that: the control end of the control panel (2) is electrically connected with an external power supply, and the control end of the first motor (17) is electrically connected with the control panel (2).

3. A security printing device for printing security documents as claimed in claim 1, characterized in that: feed mechanism includes pigment case (19), dyes box (20), material pipe (21), measuring pump (22), dyes cotton (23) and shower nozzle (24), inner wall fixedly connected with pigment case (19) on casing (1) top, the middle part fixedly connected with of casing (1) dyes box (20), and dyes the surface that the bottom of box (20) is close to printing roller (5), one side of pigment case (19) is connected with material pipe (21), the surface evenly connected with shower nozzle (24) of material pipe (21), and the bottom of shower nozzle (24) all extends to the inside of dyeing box (20), the bottom of dyeing box (20) is provided with dyes cotton (23), and dyes cotton (23) and is close to printing roller (5), the both ends of material pipe (21) all are provided with measuring pump (22), and the control end of measuring pump (22) all with control panel (2) electric connection.

4. A security printing device for printing security documents as claimed in claim 1, characterized in that: the locking and replacing mechanism comprises a dryer (25), a rotary groove (26), a fixed rotary piece (27), a first rotary wheel (28), a fixed tooth (29), a movable block (30), a fixed rod (31), a connecting hinge rod (32), a first threaded rotary rod (33), a first sliding chute (34), a first sliding block (35), a printing groove (36), a fixed groove (37), a specially-made printing rod (38), a right-angle groove (39), a guide block (40) and a second threaded rotary rod (41), wherein the dryer (25) is arranged in the middle of the machine shell (1), the dryer (25) is positioned between a third rotary roller (8) and a fourth rotary roller (9), the rotary groove (26) is formed in one end of the printing roller (5), the fixed rotary piece (27) is arranged at one end of the fixed rotary piece (27), one end of the fixed rotary piece (27) is fixedly connected with the machine shell (1), one side of the fixed rotary piece (27) is rotatably connected with the rotary groove (26), one sides of the fixed rotary pieces (27) are connected with the first rotary wheel (28), the fixed rotary piece (29) is arranged at one end of the movable rotary piece (29), and the fixed rotary piece (29) is arranged at the outside of the fixed rotary piece (29), the one end symmetry sliding connection of fixed commentaries on classics piece (27) has dead lever (31), the one end of dead lever (31) all is connected with through the pivot and connects hinge rod (32), and the one end of connecting hinge rod (32) all is connected through the pivot with movable block (30), the one end of movable block (30) is connected with first screw thread bull stick (33) through the bearing, and the one end of first screw thread bull stick (33) passes fixed commentaries on classics piece (27) and extends to the outside of casing (1), two sets of first spout (34) have been seted up to one side of fixed commentaries on classics piece (27), the inside of first spout (34) all sliding connection has first slider (35), and the one end of first slider (35) all respectively with dead lever (31) fixed connection, seal groove (36) have evenly been seted up on the surface of printing roller (5), the even fixed connection of inner wall of printing roller (5) has fixed slot (37), and fixed slot (37) all corresponding with seal groove (36), the inside of fixed slot (37) all sliding connection has tailor-made printing rod (38), and the one end of special seal bar (38) all has been seted up special right angle groove (40) and special guide bar (39) and special guide bar (40), one end of the fixed groove (37) is connected with a second threaded rotating rod (41) through threads, one end of the second threaded rotating rod (41) is attached to one end of the special printing rod (38), and the control end of the dryer (25) is electrically connected with the control panel (2).

5. A security printing device for printing security documents as claimed in claim 1, characterized in that: the centering mechanism comprises a bottom plate (42), a movable groove (43), a threaded sleeve (44), a reverse threaded rod (45), a second motor (46), a connecting groove (47), a connecting rod (48), a second sliding body (49), a second sliding block (50) and a centering plate (51), wherein the middle part of the casing (1) is fixedly connected with the bottom plate (42), the movable groove (43) is formed in the middle part of the bottom plate (42), two sets of threaded sleeves (44) are slidably connected to the inner part of the movable groove (43), the reverse threaded rod (45) is connected with the threaded sleeve (44) through threads, the surface thread directions of the reverse threaded rod (45) are opposite, the second motor (46) is arranged at one end of the bottom plate (42), the output end of the second motor (46) is fixedly connected with one end of the reverse threaded rod (45), one end of the reverse threaded rod (45) is connected with the inner wall of the movable groove (43) through a bearing, the second sliding body (49) is formed at two ends of the bottom plate (42), the connecting rod (47) is fixedly connected with the connecting groove (47), and the connecting rod (47) is connected with the inner part of the connecting groove (47), the inside of second slip (49) all has two sets of second slider (50) of sliding connection, the one end of second slider (50) is fixed connection centering plate (51) all, the both ends of connecting rod (48) all respectively with thread bush (44) and second slider (50) fixed connection, two sets of second slider (50) are located the second and change between roller (4) and clamp plate (6), and another two sets of second slider (50) are located the third and change between roller (8) and fourth commentaries on classics roller (9), the control end and control panel (2) electric connection of second motor (46).

6. A security printing device for printing security documents as claimed in claim 1, characterized in that: the slitting mechanism comprises a slitting wheel (75), a slitting plate (52), an adjusting groove (53), an adjusting block (54), an adjusting rod (55), scale marks (56), a pressing and slitting roller (57) and a stepping motor (58), the slitting plate (52) is arranged at the bottom end of the slitting roller (12), and both ends of the cutting plate (52) are fixedly connected with the machine shell (1), the surface of the slitting roller (12) is uniformly provided with cutting wheels (75), the surface of the slitting roller (12) is provided with scale marks (56), three groups of adjusting grooves (53) are uniformly arranged on the surface of the slitting roller (12), the inner parts of the adjusting grooves (53) are all connected with adjusting blocks (54) in a sliding way, and one end of the adjusting block (54) is respectively and fixedly connected with the cutting wheel (75), one end of the adjusting block (54) is connected with an adjusting rod (55) through threads, and one end of the adjusting rod (55) is contacted with the inner wall of the adjusting groove (53), one end of the cutting plate (52) is provided with a pressing and cutting roller (57), one end of the pressure cutting roller (57) is connected with the machine shell (1) through a bearing, one end of the machine shell (1) is provided with a stepping motor (58), and the output end of the stepping motor (58) is fixedly connected with one end of the pressure cutting roller (57), and the control end of the stepping motor (58) is electrically connected with the control board (2).

7. A security printing device for printing security documents as claimed in claim 1, characterized in that: the unwinding mechanism comprises a winding drum (59), a winding groove (60), a resisting plate (61), a fixing piece (62), a torsion spring (63), a resisting piece (64), a third threaded rotating rod (65), an electric push rod (66), a fixed arc plate (67), a second rotating wheel (68), a third sliding groove (69), a third sliding block (70), a guide groove (71) and a guide plate (72), wherein the winding drum (59) is uniformly arranged on the surface of one group of material rollers (13), the winding groove (60) is uniformly formed on the surface of each material roller (13), the resisting plate (61) is respectively arranged inside each winding groove (60), the fixing piece (62) is respectively arranged at one end of each resisting plate (61), the torsion spring (63) is respectively arranged at one end of each resisting plate, the fixing piece (61) and the fixing piece (62), the torsion spring (63) is respectively fixedly connected with the resisting plate (61) and the fixing piece (62), the torsion spring (13) is connected with the inner part of each resisting plate (64) in a sliding manner, the sliding grooves (69) are symmetrically formed in the middle of the third sliding groove (69), and the sliding grooves (69) are symmetrically formed in the third sliding groove (71), the inside of guide slot (71) all sliding connection have baffle (72), and the one end of baffle (72) all respectively with third slider (70) fixed connection, the both ends of material roller (13) all are connected with third slider (70) through the bearing, the one end of material roller (13) all has third screw thread bull stick (65) through threaded connection, and the one end of third screw thread bull stick (65) all is connected with the one end that supports piece (64) through the bearing, the other end of third screw thread bull stick (65) all passes material roller (13) and extends to the outside of third slider (70), the both ends of casing (1) all are provided with two sets of electric push rod (66), the output fixed arc board (67) of electric push rod (66), and fixed arc board (67) all are the semicircle form, the inside of fixed arc board (67) all evenly is connected with second runner (68) through the bearing, and the surface of second runner (68) all laminates with material roller control panel (13), the control end and the electric connection of electric push rod (66) all are connected with electric property (2).

8. A printing method for a security printing device for printing security documents as claimed in any one of claims 1 to 7, characterized in that:

the method comprises the following steps: the printing roller is replaced, wherein a user rotates the first threaded rotating rod (33), the fixed rod (31) can be inserted into the fixed teeth (29) through the first threaded rotating rod (33) and the connecting hinge rod (32), so that the printing roller (5) is locked, the user rotates the second threaded rotating rod (41), then the special printing rod (38) is taken down and replaced by the required special printing rod (38), then the special printing rod is fixed, the printing roller (5) is unlocked through rotating the first threaded rotating rod (33), and the replacement is finished;

step two: fixing the security paper, firstly rotating a third threaded rotating rod (65) by a user to enable a resisting part (64) not to be abutted against a resisting plate (61), then receiving the resisting plate (61) inside a material roller (13), respectively sleeving a security paper roll and a winding cylinder (59) on the surfaces of two groups of material rollers (13) to enable the security paper roll and the winding cylinder to be in proper positions, then rotating the third threaded rotating rod (65) to fix the security paper roll and the winding cylinder (59), then placing the material rollers (13) at two ends of a machine shell (1), positioning and guiding through a third sliding block (70) and a guide plate (72) to enable the material roller (13) to be meshed with a first gear (14), and then enabling a fixed arc plate (67) to rise until the fixed arc plate is attached to the material roller (13);

step three: in the centering process, the security paper passes through the device, one end of the security paper is fixed with a winding drum (59), a user controls a second motor (46) to work, and the security paper can be centered through a threaded sleeve (44), a reverse threaded rod (45), a connecting rod (48) and a centering plate (51);

step four: the cutting distance is adjusted, after a user rotates the adjusting rod (55), the cutting wheel (75) can be moved, the cutting distance is controlled through the scale marks (56), and after the adjustment is finished, the cutting wheel is fixed through rotating the adjusting rod (55);

step five: printing, a user controls the device to work through the control board (2), the output of the first motor (17) drives the material roller (13), the second rotating roller (4), the printing roller (5), the fourth rotating roller (9) and the cutting roller (12) to rotate through the driving belt (18), the second gear (15), the first gear (14) and the auxiliary wheel (16), at the moment, security paper moves, the metering pump (22) sprays the pigment in the pigment box (19) to the surface of the dyed cotton (23) through the spray head (24), the special printing rod (38) in the printing roller (5) is smeared through the dyed cotton (23), the security paper is printed through the special printing rod 38, so that the special security paper is formed, the dryer (25) can quickly dry the pigment, the pressing and cutting distance of the pressing and cutting roller (57) can be controlled through the stepping motor (58) and the stepping motor (58), the rotating cutting roller (12) and the cutting wheel (75) perform cutting, at the discharging roller (13) performs the cutting operation, and the other paper collecting roller (13) performs the paper collecting operation.