CN111361278A

CN111361278A - Printing ink diffusion printing device is prevented in printing

Info

Publication number: CN111361278A
Application number: CN202010205782.8A
Authority: CN
Inventors: 杜清锋
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-23
Filing date: 2020-03-23
Publication date: 2020-07-03

Abstract

The invention relates to the field of printing, in particular to a printing device for preventing printing ink from diffusing. The invention aims to provide a printing device for preventing ink diffusion during printing. A printing device for preventing ink diffusion during printing comprises a bracket, an ink mark diffusion preventing printing device, a deviation correcting device, a surface dust sweeping device and a control screen; the rear middle part of the bracket is connected with the conveyor belt through bolts; the top of the bracket is connected with the top plate; the right side in the front of the conveyor belt is connected with a surface ash sweeping device. The invention realizes that the trace is impressed on the surface of the paperboard firstly, then the impressing head is inked, the ink contact dent is controlled, and the ink is left and bound by the gravitation; firstly, using a curved surface to block, correcting the paperboard into small deflection, and then using two flat plates to slightly extrude the paperboard between the two flat plates to restore the paperboard to the normal position; and surface impurities are removed, so that the effect that printing ink is lost after forming due to blocking is avoided.

Description

Printing ink diffusion printing device is prevented in printing

Technical Field

The invention relates to the field of printing, in particular to a printing device for preventing printing ink from diffusing.

Background

In the printing using the ultraviolet curable ink, a method is generally used in which the ultraviolet curable printing ink is printed on a printing material by a printing apparatus, and then the ultraviolet curable printing ink printing layer is irradiated with ultraviolet light emitted from an ultraviolet curing lamp to cure and dry the ultraviolet curable printing ink printing layer, thereby completing the printing. The printed matter obtained by the process has a rough printing layer of the ultraviolet curing printing ink and poor visual effect and hand feeling.

Chinese patent CN101125500A discloses a printing process, which overcomes the problems of relatively coarse ink printing layer and poor visual effect and hand feeling by distributing and cross-linking and solidifying the ink, but when printing on the surface of some square cardboard materials with poor ink penetration and absorption, the structure of bound ink is lacked, and cardboard paper deflection may occur during transportation, the cardboard paper surface has dust and impurities, the lack of bound structure can cause ink diffusion to cause printed patterns and blurred handwriting, the cardboard paper deflection causes incorrect handwriting and pattern position, and the impurities affect ink drop to cause loss of handwriting and patterns.

In summary, there is a need to develop a printing apparatus capable of cleaning the surface layer paperboard impurities, correcting the position of the printing paperboard and preventing ink diffusion, so as to overcome the defects in the prior art that the printed patterns and writing are fuzzy due to ink diffusion, the writing and pattern positions are incorrect due to the deflection of the paperboard, and the writing and pattern loss due to ink drop caused by impurities.

Disclosure of Invention

The invention aims to overcome the defects that in the prior art, printed patterns and handwriting are fuzzy due to ink diffusion, the positions of the handwriting and the patterns are incorrect due to the deflection of a paperboard, and the handwriting and the patterns are lost due to the influence of impurities on ink falling.

The invention is achieved by the following specific technical means:

a printing device for preventing ink diffusion during printing comprises a support, a conveyor belt, a top plate, an ink mark diffusion preventing printing device, a deviation correcting device, a surface dust sweeping device and a control screen; the rear middle part of the bracket is connected with the conveyor belt through bolts; the top of the bracket is connected with the top plate; a deviation correcting device is arranged in the middle of the bottom of the conveyor belt; the right side in the front of the conveyor belt is connected with the surface ash sweeping device, and the left middle of the surface ash sweeping device is connected with the deviation correcting device; a control screen is arranged on the right front side of the conveyor belt; and the middle part of the bottom of the top plate is provided with an ink mark diffusion prevention printing device, and the right middle top of the ink mark diffusion prevention printing device is connected with a deviation correction device.

Furthermore, the ink mark diffusion prevention printing device comprises a motor, a first driving wheel, a second driving wheel, a first straight gear, a second straight gear, a first bevel gear, a second bevel gear, a third driving wheel, a fourth driving wheel, a first screw rod, a driving frame, a replaceable printing block, a first electric push rod, a third straight gear, a fourth straight gear, a first toothed bar, a first connecting column, a mechanism accommodating chamber, a first driving rod, an ink box and an ink sucking block; the front end axle center of the motor is in transmission connection with the first transmission wheel; the right lower side of the first driving wheel is in transmission connection with a second driving wheel; the left side of the second transmission wheel is in transmission connection with the first straight gear through a loose transmission belt; a second straight gear is arranged on the left upper side of the first straight gear; the bottom of the first straight gear is connected with a first electric push rod; a third straight gear is arranged on the left lower side of the first straight gear; the left lower side of the second straight gear is in transmission connection with the first bevel gear; the front side of the top end of the first bevel gear is meshed with the second bevel gear; the top of the second bevel gear is in transmission connection with a third transmission wheel; the left side of the third driving wheel is in transmission connection with the fourth driving wheel; the bottom of the fourth driving wheel is in transmission connection with the first screw rod; the middle part of the outer surface of the first screw rod is in transmission connection with the transmission frame; the bottom of the transmission frame is provided with a replaceable printing block; the left lower side of the axle center at the front end of the third straight gear is in transmission connection with the fourth straight gear; the bottom of the fourth straight gear is meshed with the first rack bar; the middle part of the bottom of the first toothed bar is welded with the first connecting column; the top of the outer surface of the first connecting column is in sliding connection with the mechanism accommodating chamber; the bottom of the first connecting column is welded with the first transmission rod; the left side of the first transmission rod is connected with the ink box, and the bottom of the ink box is connected with the mechanism accommodating chamber; the top of the ink box is connected with the ink absorption block; the bottom of the motor is connected with the top plate; the right lower side of the second driving wheel is connected with a deviation correcting device.

Further, the deviation correcting device comprises a third bevel gear, a fourth bevel gear, a fifth spur gear, a sixth spur gear, a second electric push rod, an installation flat plate, a deviation correcting auxiliary block, a seventh spur gear, a second rack bar, a first chute, a second transmission rod, a second connection column, a deviation correcting clamp plate, a slide block, a second chute, a first spring and a second spring; the right front side of the third bevel gear wheel is meshed with the fourth bevel gear; the right side of the fourth bevel gear is in transmission connection with a fifth straight gear; the left upper side of the fifth straight gear is meshed with the sixth straight gear; the top of the sixth straight gear is connected with a second electric push rod; the left lower side of the sixth straight gear is meshed with the seventh straight gear; the top of the second electric push rod is connected with the mounting flat plate; the left side of the top end of the installation flat plate is connected with the deviation correction auxiliary block; the bottom of the seventh straight gear is meshed with the second rack; the bottom of the second toothed bar is in sliding connection with the first sliding chute; the left side of the second gear lever is welded with the second transmission lever; the left side of the second transmission rod is connected with the second connecting column; the top of the second connecting column is in transmission connection with the deviation-correcting clamping plate; the bottom of the second connecting column is in transmission connection with the sliding block; the left middle part of the second connecting column is welded with the first spring; the left bottom of the second connecting column is welded with the second spring; the bottom of the sliding block is in sliding connection with the second sliding chute; the left upper side of the shaft center at the rear end of the third bevel gear is connected with a second driving wheel; the right side of the third bevel gear is connected with a surface ash sweeping device.

Further, the surface ash sweeping device comprises a fifth bevel gear, a sixth bevel gear, a fifth driving wheel, a sixth driving wheel, a seventh bevel gear, an eighth bevel gear, a seventh driving wheel, an eighth driving wheel, a long gear, an eighth straight gear, a ninth bevel gear, a tenth bevel gear, a sweeping head, a mounting suspension plate, a second driving block, a second screw rod, an eleventh bevel gear, a twelfth bevel gear, a third driving rod, a thirteenth driving wheel, a telescopic rod, a driving plate and a third electric push rod; the right bottom of the fifth bevel gear is meshed with the sixth bevel gear; the bottom of the sixth bevel gear is in transmission connection with a fifth transmission wheel; the right side of the fifth driving wheel is in transmission connection with the sixth driving wheel; the top of the sixth transmission wheel is in transmission connection with a seventh bevel gear; the left top of the seventh bevel gear is meshed with the eighth bevel gear; the top of the seventh bevel gear is in transmission connection with the telescopic rod; the left side of the eighth bevel gear is in transmission connection with a seventh transmission wheel; the top of the seventh driving wheel is in transmission connection with the eighth driving wheel; the left side of the eighth driving wheel is in transmission connection with the long gear; the left side of the bottom end of the long gear is meshed with the eighth straight gear; the left side of the eighth straight gear is in transmission connection with a ninth bevel gear; the left bottom of the ninth bevel gear is meshed with the tenth bevel gear; the left side of the ninth bevel gear is rotatably connected with the mounting suspension plate, and the bottom of the mounting suspension plate is connected with the tenth bevel gear; the bottom of the tenth bevel gear is in transmission connection with the sweeping head; the top of the mounting suspension plate is in transmission connection with the second transmission block; the middle part in the second transmission block is in transmission connection with a second screw rod; the right side of the second screw rod is in transmission connection with an eleventh bevel gear; the right bottom of the eleventh bevel gear is meshed with the twelfth bevel gear; the shaft center of the twelfth bevel gear is sleeved with the third transmission rod, and the bottom of the third transmission rod is connected with the telescopic rod; the top of the outer surface of the third transmission rod is sleeved with a thirteenth transmission wheel; the top of the outer surface of the telescopic rod is in transmission connection with the transmission plate; the left side of the bottom end of the transmission plate is in transmission connection with a third electric push rod; the left side of the fifth bevel gear is connected with the fourth bevel gear.

Furthermore, after the first electric push rod stretches and retracts to enable the first straight gear and the second straight gear to be meshed with each other, the second transmission wheel is meshed with and transmits the first straight gear, the first straight gear is meshed with and transmits the second straight gear, then the second straight gear transmits the first bevel gear, the first bevel gear is meshed with and transmits the second bevel gear, then the second bevel gear drives the third transmission wheel to rotate, the third transmission wheel then drives the fourth transmission wheel to rotate, the fourth transmission wheel then transmits the first screw rod, the first screw rod externally transmits the transmission frame to move up and down, and finally the transmission frame drives the replaceable printing block to move up and down; when the first electric push rod stretches to enable the first straight gear and the third straight gear to be meshed with each other, the second transmission wheel is meshed with and transmits the first straight gear, the first straight gear is meshed with and transmits the third straight gear, then the third straight gear drives the fourth straight gear to rotate, the fourth straight gear is meshed with and transmits the first rack bar to enable the first rack bar to move left and right, the first rack bar then drives the first connecting column to move, then the first connecting column transmits the first transmission rod, then the first transmission rod drives the ink box to move, and finally the ink box drives the ink absorption block to move left and right; when the first electric push rod stretches out and draws back to enable the first straight gear to be disengaged from the second straight gear and the third straight gear, the device keeps static.

Furthermore, when the third electric push rod stretches out and draws back to enable the eleventh bevel gear to be disengaged from the twelfth bevel gear and further to be meshed with the thirteenth driving wheel, the sixth driving wheel drives the telescopic rod, the telescopic rod drives the third driving rod to rotate, the third driving rod drives the thirteenth driving wheel, the thirteenth driving wheel is meshed with and drives the eleventh bevel gear, then the eleventh bevel gear drives the second screw rod to rotate, and finally the second screw rod drives the second driving block; when the third electric push rod stretches and retracts to enable the eleventh bevel gear and the twelfth bevel gear to be meshed with each other and to be disengaged from the thirteenth driving wheel, the sixth driving wheel drives the telescopic rod, the telescopic rod drives the third driving rod to rotate, then the third driving rod drives the twelfth bevel gear, then the twelfth bevel gear is meshed with the eleventh bevel gear to drive the eleventh bevel gear, then the eleventh bevel gear drives the second screw rod to rotate, and finally the second screw rod drives the second driving block; when the third electric push rod stretches and contracts to enable the eleventh bevel gear not to be meshed with the twelfth bevel gear and the thirteenth driving wheel at the same time, the device keeps still.

Furthermore, a camera is arranged at the left bottom of the ink mark diffusion prevention printing device.

Further, a platen is disposed on the left side in the belt and is located directly below the replaceable pad.

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

in order to solve the problems that in the prior art, the printed patterns and the handwriting are fuzzy due to ink diffusion, the handwriting and the pattern are not positioned correctly due to the deflection of the paperboard, and the handwriting and the patterns are lost due to the influence of impurities on ink drop, an ink-diffusion-preventing printing device, a deviation-correcting device and a surface dust-sweeping device are designed.

(1) The impression head is coated with ink, the impression head is controlled to be close to the concave trace groove and enables the ink to contact the concave trace groove, the ink is left in the concave trace groove by utilizing attractive force, the ink is bound through the concave trace groove with fixed shape to prevent the ink from diffusing, and the phenomenon of blurring after printing is finished is prevented.

(2) The large-amplitude deflection of the paperboard is corrected to be small-amplitude deflection by the aid of the collision and the blocking of the curved surface structure through the deviation correcting device, then two parallel flat plates are used for approaching each other, and the central small-amplitude deflection paperboard is slightly extruded, so that the paperboard is completely restored to be normal, deviation correcting work is completed, and printed handwriting and pattern deflection are prevented.

(3) The surface dust sweeping device is used for clearing surface impurities, so that printing ink can fall on the surface of the paperboard, ink in partial areas cannot be blocked by the impurities, and the problem of missing of writing and patterns after printing and forming is solved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of an ink-diffusion preventing printing apparatus according to the present invention;

FIG. 3 is a schematic structural diagram of a front view of the deviation correcting device of the present invention;

FIG. 4 is a schematic diagram of a right side view of the deviation correcting device of the present invention;

FIG. 5 is a schematic structural view of a surface ash sweeping device according to the present invention;

FIG. 6 is a right side view schematic diagram of the surface ash sweeping device of the present invention;

FIG. 7 is a perspective view of the left front view of the deviation correcting auxiliary block of the present invention;

fig. 8 is a front right perspective view of the mechanism accommodating chamber according to the present invention.

The labels in the figures are: 1-bracket, 2-conveyor belt, 3-top plate, 4-ink mark diffusion prevention printing device, 5-deviation correction device, 6-surface dust sweeping device, 7-control screen, 401-motor, 402-first drive wheel, 403-second drive wheel, 404-first straight gear, 405-second straight gear, 406-first bevel gear, 407-second bevel gear, 408-third drive wheel, 409-fourth drive wheel, 4010-first screw rod, 4011-transmission frame, 4012-replaceable printing block, 4013-first electric push rod, 4014-third straight gear, 4015-fourth straight gear, 4016-first toothed bar, 4017-first connecting column, 4018-mechanism accommodating chamber, 4019-first drive rod, 4010-4021-ink suction block, 501-a third bevel gear, 502-a fourth bevel gear, 503-a fifth spur gear, 504-a sixth spur gear, 505-a second electric push rod, 506-a mounting plate, 507-a deviation correcting auxiliary block, 508-a seventh spur gear, 509-a second rack bar, 5010-a first chute, 5011-a second transmission rod, 5012-a second connecting column, 5013-a deviation correcting splint, 5014-a slider, 5015-a second chute, 5016-a first spring, 5017-a second spring, 601-a fifth bevel gear, 602-a sixth bevel gear, 603-a fifth transmission wheel, 604-a sixth transmission wheel, 605-a seventh bevel gear, 606-an eighth bevel gear, 607-a seventh transmission wheel, 608-an eighth transmission wheel, 609-a long gear, 6010-an eighth spur gear, 6011-ninth bevel gear, 6012-tenth bevel gear, 6013-sweeping head, 6014-installation suspension plate, 6015-second transmission block, 6016-second screw rod, 6017-eleventh bevel gear, 6018-twelfth bevel gear, 6019-third transmission rod, 6020-thirteenth transmission wheel, 6021-telescopic rod, 6022-transmission plate and 6023-third electric push rod.

Detailed Description

The invention is further described below with reference to the figures and examples.

Examples

A printing device for preventing ink diffusion during printing is shown in figures 1-8 and comprises a support 1, a conveyor belt 2, a top plate 3, an ink-diffusion preventing printing device 4, a deviation correcting device 5, a surface dust sweeping device 6 and a control screen 7; the rear middle part of the bracket 1 is connected with the conveyor belt 2 through bolts; the top of the bracket 1 is connected with the top plate 3; the middle part of the bottom of the conveyor belt 2 is provided with a deviation correcting device 5; the right side in the front of the conveyor belt 2 is connected with a surface ash sweeping device 6, and the left middle of the surface ash sweeping device 6 is connected with a deviation correcting device 5; a control screen 7 is arranged on the right front side of the conveyor belt 2; the middle part of the bottom of the top plate 3 is provided with an ink mark diffusion prevention printing device 4, and the top part of the right middle of the ink mark diffusion prevention printing device 4 is connected with a deviation correction device 5.

The working principle is as follows: during the use, earlier install printing ink diffusion printing device in the place that needs to use, external power supply through 7 starting drive of control screen, and the printing plate paper is placed on conveyer belt 2 and is transported by it from 2 top right sides on conveyer belt, and conveyer belt 2 transports printing plate paper earlier and sweeps grey device 6 through the surface, will all sweep away dust, impurity etc. on printing plate paper surface, prevents that impurity from influencing subsequent printing ink printing process. The printing plate paper may be deflected after the completion of the cleaning, the printing plate paper which is not deflected cannot be influenced when being conveyed by the conveyor belt 2 and passing through the deviation correcting device 5, and the printing plate paper which is deflected can be corrected by the deviation correcting device 5 when passing through the deviation correcting device 5, and is recovered to a normal state, so that the printing deflection is prevented. The printing plate paper which is recovered to be right is continuously conveyed to the position below the ink-proof mark diffusion printing device 4, the ink-proof mark diffusion printing device 4 firstly applies force to the printing plate paper to stamp the dent, then the stamping head is coated with ink, the ink is controlled to be contacted with the dent under the condition that the printing plate paper is not stamped, then the ink is remained in the dent due to the gravity of the printing plate paper, finally the printing plate paper is taken away, then the printing plate paper is subjected to specific illumination, the ink is rapidly solidified, and the printed matter which is clear in printing and free of ink diffusion phenomenon is obtained. The device is simple to use, cleans the paperboard surface earlier, prevents that impurity from influencing spreading of printing ink, then rectifies the skew paperboard, guarantees that the printing position is correct, carries out the printing step of pressing the indentation earlier and inking again at last, prevents that ink diffusion from leading to finally printing the phenomenon that finished product writing, pattern are unclear, is worth using widely.

The ink mark diffusion preventing printing device 4 comprises a motor 401, a first driving wheel 402, a second driving wheel 403, a first straight gear 404, a second straight gear 405, a first bevel gear 406, a second bevel gear 407, a third driving wheel 408, a fourth driving wheel 409, a first screw 4010, a driving frame 4011, a replaceable printing block 4012, a first electric push rod 4013, a third straight gear 4014, a fourth straight gear 4015, a first toothed bar 4016, a first connecting column 4017, a mechanism accommodating chamber 4018, a first driving rod 4019, an ink box 4020 and an ink absorbing block 4021; the front end axis of the motor 401 is in transmission connection with the first transmission wheel 402; the lower right side of the first driving wheel 402 is in driving connection with a second driving wheel 403; the left side of the second transmission wheel 403 is in transmission connection with a first straight gear 404 through a loose transmission belt; a second spur gear 405 is arranged on the left upper side of the first spur gear 404; the bottom of the first straight gear 404 is connected with a first electric push rod 4013; a third spur gear 4014 is arranged on the left lower side of the first spur gear 404; the left lower side of the second spur gear 405 is in transmission connection with a first bevel gear 406; the front side of the top end of the first bevel gear 406 is meshed with the second bevel gear 407; the top of the second bevel gear 407 is in transmission connection with a third transmission wheel 408; the left side of the third driving wheel 408 is in driving connection with a fourth driving wheel 409; the bottom of the fourth driving wheel 409 is in driving connection with the first screw 4010; the middle part of the outer surface of the first screw rod 4010 is in transmission connection with a transmission frame 4011; the bottom of the transmission frame 4011 is provided with a replaceable printing block 4012; the left lower side of the axle center of the front end of the third straight gear 4014 is in transmission connection with a fourth straight gear 4015; the bottom of the fourth straight gear 4015 is meshed with the first rack bar 4016; the middle of the bottom of the first rack bar 4016 is welded with the first connecting post 4017; the top of the outer surface of the first connecting post 4017 is in sliding connection with the mechanism accommodating chamber 4018; the bottom of the first connecting post 4017 is welded with the first transmission rod 4019; the first transmission lever 4019 is connected to the ink tank 4020 on the left side, and the ink tank 4020 is connected to the mechanism accommodating chamber 4018 on the bottom; the top of the ink box 4020 is connected with an ink absorption block 4021; the bottom of the motor 401 is connected with the top plate 3; the lower right side of the second transmission wheel 403 is connected with a deviation correcting device 5.

When the printing paper board stops printing below the ink mark diffusion prevention printing device 4, the first electric push rod 4013 is controlled to stretch and contract to enable the first straight gear 404 and the second straight gear 405 to be meshed with each other, the loose transmission belt is tightened, then the motor 401 drives the first transmission wheel 402 to rotate, the first transmission wheel 402 drives the second transmission wheel 403, the second transmission wheel 403 drives the first straight gear 404, the first straight gear 404 is meshed with and drives the second straight gear 405, the second straight gear 405 drives the first bevel gear 406 to rotate, the first bevel gear 406 is meshed with and drives the second bevel gear 407, the second bevel gear 407 then drives the third transmission wheel 408, the third transmission wheel 408 continues to drive the fourth transmission wheel 409, then the fourth transmission wheel 409 drives the first screw rod 4010, the first screw rod 4010 drives the transmission frame 4011 to enable the transmission frame 4011 to move downwards, the transmission frame 4011 drives the replaceable printing block 4012 to move downwards to imprint the paper board, and a concave impression is generated on the surface of the paper, then the reversing motor 401 retracts the replaceable printing block 4012 to the original position, then the first electric push rod 4013 is controlled to extend and retract to enable the first straight gear 404 and the third straight gear 4014 to be meshed with each other, the first straight gear 404 is meshed with and drives the third straight gear 4014, the third straight gear 4014 drives the fourth straight gear 4015 to rotate, the fourth straight gear 4015 is meshed with and drives the first toothed bar 4016 to move leftwards, under the supporting assistance of a mechanism accommodating chamber 4018, the first toothed bar 4016 drives a first connecting column 4017 to move leftwards, the first connecting column 4017 drives a first transmission rod 4019 to move leftwards, the first transmission rod 4019 then pushes a 4020 to move leftwards, the ink absorbing block 4021 is made of a soft ink box which is similar to a sponge and can absorb liquid, after absorbing the ink in the ink box 4020, the ink absorbing block 4021 moves leftwards along with the ink box 4020, the top of the ink absorbing block 4021 is contacted with the bottom of the whole replaceable printing block 4012, then the ink absorbing block is smeared at the bottom of the replaceable printing block 4012, then, and then the first electric push rod 4013 is controlled to extend and contract to enable the first straight gear 404 and the second straight gear 405 to be meshed with each other, the replaceable printing block 4012 is lowered, but the paperboard is not stamped at this time, the replaceable printing block 4012 is controlled to enable ink at the bottom of the replaceable printing block to be in contact with stamping dents, most of the ink is sucked by the dents due to attraction force after the contact, the motor 401 is reversed again to control the replaceable printing block 4012 to ascend, and therefore part of the ink can remain in the dents. Then the paper board is conveyed away, and special light is irradiated to solidify the ink in the dents, so that clear printing can be performed on the surface of the material which is difficult to penetrate the ink. The device, it is simple to use, solved and passed through black, printing ink diffusion leads to final finished product writing, the blurred problem of pattern when the poor material surface printing of blotting ability, and the in-process does not relate to chemical change, can not produce chemical destruction to the printing plate paper surface, the life of printed matter has been prolonged, the innocent treatment that needs go on when retrieving printed matter still less, printed matter green more, and the device can sweep grey device 6 formation linkage with deviation correcting device 5 and surface, be worth using widely.

The deviation correcting device 5 comprises a third bevel gear 501, a fourth bevel gear 502, a fifth spur gear 503, a sixth spur gear 504, a second electric push rod 505, a mounting flat plate 506, a deviation correcting auxiliary block 507, a seventh spur gear 508, a second gear rack 509, a first sliding chute 5010, a second transmission rod 5011, a second connecting column 5012, a deviation correcting splint 5013, a sliding block 5014, a second sliding chute 5015, a first spring 5016 and a second spring 5017; the right front side of the third bevel gear 501 is meshed with a fourth bevel gear 502; the right side of the fourth bevel gear 502 is in transmission connection with a fifth spur gear 503; the upper left side of the fifth spur gear 503 is meshed with the sixth spur gear 504; the top of the sixth spur gear 504 is connected with a second electric push rod 505; the left lower side of the sixth spur gear 504 is meshed with a seventh spur gear 508; the top of the second electric push rod 505 is connected with the mounting flat plate 506; the left side of the top end of the installation flat plate 506 is connected with a deviation correction auxiliary block 507; the bottom of the seventh spur gear 508 is meshed with the second rack 509; the bottom of the second rack 509 is in sliding connection with the first sliding chute 5010; the left side of the second rack 509 is welded with the second transmission rod 5011; the left side of the second transmission rod 5011 is connected with a second connecting column 5012; the top of the second connecting column 5012 is in transmission connection with the deviation correcting clamping plate 5013; the bottom of the second connecting column 5012 is in transmission connection with the sliding block 5014; the left middle part of the second connecting post 5012 is welded with the first spring 5016; the left bottom of the second connecting post 5012 is welded with a second spring 5017; the bottom of the sliding block 5014 is in sliding connection with the second sliding chute 5015; the left upper side of the axle center at the rear end of the third bevel gear 501 is connected with a second driving wheel 403; the right side of the third bevel gear 501 is connected with a surface ash sweeping device 6.

When square paperboard is subjected to deviation correction through the deviation correcting device 5, the part of the greatly deviated paperboard extending out of the right side of the conveyor belt 2 is firstly contacted with the curved surface part of the deviation correcting auxiliary block 507 arranged on the installation flat plate 506 and is blocked to move along with the continuous movement of the paperboard main body, the whole paperboard rotates under the action of the curved surface part of the deviation correcting auxiliary block 507, so that the original large deviation of the paperboard is converted into small deviation, then the third bevel gear 501 is meshed with and drives the fourth bevel gear 502, the fourth bevel gear 502 drives the fifth spur gear 503 to rotate, the fifth spur gear 503 is meshed and driven, the fifth spur gear 503 is meshed and drives the sixth spur gear 504, the sixth spur gear 504 is meshed and drives the seventh spur gear 508, the seventh spur gear 508 is meshed and drives the second rack 509 to slide rightwards in the first chute 5010, then the second rack 509 drives the second transmission rod 5011 to move rightwards, then the second transmission rod 5011 pulls the second connection column 5012 to move rightwards, finally, the second connecting column 5012 drives the deviation correcting clamping plate 5013 to move right to push the paper board recovered to be slightly deviated to contact with the left flat surface of the deviation correcting auxiliary block 507, the right side surface of the deviation correcting clamping plate 5013 and the left flat surface of the deviation correcting auxiliary block 507 are two parallel planes, and the paper board is recovered to be in a right position by means of clamping of the two planes. During this process, the first spring 5016 and the second spring 5017 are in a stretched state, and the slider 5014 and the second sliding slot 5015 function to assist the second connecting post 5012 to slide. After the correction is finished, the second electric push rod 505 is controlled to stretch and retract so that the sixth spur gear 504 is disengaged from the fifth spur gear 503 and the seventh spur gear 508, the first spring 5016 and the second spring 5017 rebound to restore the correction clamping plate 5013 to the original position, and the next piece of paperboard needing to be aligned is waited for. The device is simple to use, firstly, the inclined paperboard is corrected by the blocking and pushing action of the curved surface part of the correction auxiliary block 507, the paperboard is converted from a large-amplitude inclined state to a small-amplitude inclined state, the process is completed by replacing a right angle with the curved surface, the scratch of the sharp part of the right angle and the influence on the attractiveness of the paperboard side edge can be avoided, then, the paperboard is completely righted by the extrusion clamping action of the two parallel planes of the correction clamping plate 5013 and the correction auxiliary block 507, the phenomenon that the paperboard is scrapped due to the subsequent printing inclination is avoided, the material waste is reduced, the production efficiency is improved, and the device can be linked with the ink mark diffusion preventing printing device 4 and the surface dust sweeping device 6, and is worthy of popularization and use.

The surface ash sweeping device 6 comprises a fifth bevel gear 601, a sixth bevel gear 602, a fifth driving wheel 603, a sixth driving wheel 604, a seventh bevel gear 605, an eighth bevel gear 606, a seventh driving wheel 607, an eighth driving wheel 608, a long gear 609, an eighth straight gear 6010, a ninth bevel gear 6011, a tenth bevel gear 6012, a sweeping head 6013, a mounting suspension plate 6014, a second driving block 6015, a second screw 6016, an eleventh bevel gear 6017, a twelfth bevel gear 6018, a third driving rod 6019, a thirteenth driving wheel 6020, an expansion rod 6021, a driving plate 6022 and a third electric push rod 6023; the right bottom of the fifth bevel gear 601 is meshed with the sixth bevel gear 602; the bottom of the sixth bevel gear 602 is in transmission connection with a fifth transmission wheel 603; the right side of the fifth driving wheel 603 is in driving connection with a sixth driving wheel 604; the top of the sixth transmission wheel 604 is in transmission connection with a seventh bevel gear 605; the top left part of the seventh bevel gear 605 is meshed with the eighth bevel gear 606; the top of the seventh bevel gear 605 is in transmission connection with a telescopic rod 6021; the left side of the eighth bevel gear 606 is in transmission connection with a seventh transmission wheel 607; the top of the seventh transmission wheel 607 is in transmission connection with an eighth transmission wheel 608; the left side of an eighth driving wheel 608 is in driving connection with a long gear 609; the left side of the bottom end of the long gear 609 is meshed with an eighth straight gear 6010; the left side of the eighth straight gear 6010 is in transmission connection with a ninth bevel gear 6011; the left bottom of the ninth bevel gear 6011 is engaged with a tenth bevel gear 6012; the left side of a ninth bevel gear 6011 is rotatably connected with an installation suspension plate 6014, and the bottom of the installation suspension plate 6014 is connected with a tenth bevel gear 6012; the bottom of the tenth bevel gear 6012 is in transmission connection with a sweeping head 6013; the top of the mounting suspension plate 6014 is in transmission connection with a second transmission block 6015; the middle part in the second transmission block 6015 is in transmission connection with a second screw 6016; the right side of the second screw 6016 is in transmission connection with an eleventh bevel gear 6017; the right bottom of the eleventh bevel gear 6017 is engaged with a twelfth bevel gear 6018; the axis of the twelfth bevel gear 6018 is sleeved with a third transmission rod 6019, and the bottom of the third transmission rod 6019 is connected with a telescopic rod 6021; the top of the outer surface of the third transmission rod 6019 is sleeved with a thirteenth transmission wheel 6020; the top of the outer surface of the telescopic rod 6021 is in transmission connection with the transmission plate 6022; the left side of the bottom end of the transmission plate 6022 is in transmission connection with a third electric push rod 6023; the left side of the fifth bevel gear 601 is connected to the fourth bevel gear 502.

When the surface of the paperboard is cleaned, the fifth bevel gear 601 is meshed with and drives the sixth bevel gear 602, the sixth bevel gear 602 drives the fifth driving wheel 603, the fifth driving wheel 603 drives the sixth driving wheel 604 to rotate, the sixth driving wheel 604 drives the seventh bevel gear 605, the seventh bevel gear 605 simultaneously drives the eighth bevel gear 606 and the telescopic rod 6021 to rotate, the eighth bevel gear 606 drives the seventh driving wheel 607, the seventh driving wheel 607 then drives the eighth driving wheel 608, the eighth driving wheel 608 drives the long gear 609 to rotate, the long gear 609 is meshed with and drives the eighth straight gear 6010, the eighth straight gear 6010 drives the ninth bevel gear 6011, the ninth bevel gear 6011 is further meshed with and drives the tenth bevel gear 6012, and the tenth bevel gear 6012 finally drives the cleaning head 6013, so that the surface of the paperboard is cleaned, impurities with poor adhesion such as dust are removed, and a relatively intact environment is provided for printing. Meanwhile, the telescopic rod 6021 drives a twelfth bevel gear 6018 to rotate, the twelfth bevel gear 6018 is meshed with and drives an eleventh bevel gear 6017, the eleventh bevel gear 6017 drives a second screw 6016 to rotate, then the second screw 6016 drives a second transmission block 6015 to move, the second transmission block 6015 drives the installation suspension plate 6014 to move, and finally, the cleaning head 6013 is driven to move transversely, the board paper moves longitudinally and is matched with the transverse movement, and the purpose of cleaning the surface of the whole board paper is achieved. If necessary, the third electric push rod 6023 can be controlled to extend and contract to drive the transmission plate 6022 to descend, then the transmission plate 6022 drives the third transmission rod 6019 to descend and the telescopic rod 6021 to contract, the eleventh bevel gear 6017 is disengaged from the twelfth bevel gear 6018 and is meshed with the thirteenth transmission wheel 6020 to convert the meshed object. The device is simple to use, makes the bull gear 609 as the continuous rotary power source of broom 6013 through mechanical transmission, controls broom 6013 lateral shifting through second lead screw 6016, mutually supports with the longitudinal movement of paperboard itself, reaches the effect of clearing up whole paperboard to the device can form the linkage with anti-ink mark diffusion printing device 4 and deviation correcting device 5, is worth using widely.

When the first electric push rod 4013 stretches and retracts to enable the first straight gear 404 and the second straight gear 405 to be meshed with each other, the second transmission wheel 403 is meshed with and transmits the first straight gear 404, the first straight gear 404 is meshed with and transmits the second straight gear 405, then the second straight gear 405 transmits the first bevel gear 406, the first bevel gear 406 is meshed with and transmits the second bevel gear 407, then the second bevel gear 407 drives the third transmission wheel 408 to rotate, the third transmission wheel 408 drives the fourth transmission wheel 409 to rotate, the fourth transmission wheel 409 drives the first screw rod 4010 to rotate, the first screw rod 4010 externally transmits the transmission frame 4011 to move up and down, and finally the transmission frame 4011 drives the replaceable printing block 4012 to move up and down; when the first electric push rod 4013 stretches and enables the first straight gear 404 and the third straight gear 4014 to be meshed with each other, the second transmission wheel 403 is meshed with and transmits the first straight gear 404, the first straight gear 404 is further meshed with and transmits the third straight gear 4014, then the third straight gear 4014 drives the fourth straight gear 4015 to rotate, the fourth straight gear 4015 is meshed with and transmits the first toothed bar 4016 to enable the first toothed bar to move left and right, the first toothed bar 4016 then drives the first connecting column 4017 to move, then the first connecting column 4017 transmits the first transmission rod 4019, then the first transmission rod 4019 drives the ink box 4020 to move, and finally the ink box 4020 drives the ink suction block 4021 to move left and right; when the first electrically powered push rod 4013 expands and contracts such that the first spur gear 404 does not intermesh with the second spur gear 405 and the third spur gear 4014, the arrangement remains stationary. The two parts of the replaceable printing block 4012 and the ink absorbing block 4021 are controlled to operate respectively by changing the meshing objects of the first straight gear 404, and the two parts are matched with each other to achieve the purpose.

When the third electric push rod 6023 extends and contracts to enable the eleventh bevel gear 6017 to be disengaged from the twelfth bevel gear 6018 and further to be engaged with the thirteenth driving wheel 6020, the sixth driving wheel 604 drives the telescopic rod 6021, the telescopic rod 6021 drives the third driving rod 6019 to rotate, the third driving rod 6019 drives the thirteenth driving wheel 6020, the thirteenth driving wheel 6020 then engages and drives the eleventh bevel gear 6017, then the eleventh bevel gear 6017 drives the second lead screw 6016 to rotate, and finally the second lead screw 6016 drives the second driving block 6015; when the third electric push rod 6023 extends and contracts to enable the eleventh bevel gear 6017 and the twelfth bevel gear 6018 to be meshed with each other and to be disengaged from the thirteenth driving wheel 6020, the sixth driving wheel 604 drives the telescopic rod 6021, the telescopic rod 6021 drives the third driving rod 6019 to rotate, then the third driving rod 6019 drives the twelfth bevel gear 6018, then the twelfth bevel gear 6018 is meshed with and drives the eleventh bevel gear 6017, then the eleventh bevel gear 6017 drives the second lead screw 6016 to rotate, and finally the second lead screw 6016 drives the second driving block 6015; the arrangement remains stationary as the third electric push rod 6023 extends and retracts such that the eleventh bevel gear 6017 does not simultaneously intermesh with the twelfth bevel gear 6018 and with the thirteenth drive wheel 6020. When the engagement target of the eleventh bevel gear 6017 is controlled, the eleventh bevel gear 6017 is engaged with the twelfth bevel gear 6018 or the thirteenth driving wheel 6020 is engaged with each other and driven by both, the rotation direction of the eleventh bevel gear 6017 is opposite, and the second screw 6016 may be rotated in different directions, thereby controlling the left and right movement of the second driving block 6015.

The left bottom of the ink mark diffusion preventing printing device 4 is provided with a camera. Can fix a position the paperboard through this camera, confirm the printing position, prevent the printing position dislocation.

A platen is provided on the left side in the conveyor belt 2 and is located directly below the exchangeable pad 4012. The platen provides a backup force for the replaceable pad 4012, preventing the belt 2 from being damaged by the embossing process.

The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention to achieve the above technical effects.

Claims

1. A printing device for preventing ink diffusion during printing comprises a support (1), a conveyor belt (2) and a top plate (3), and is characterized by further comprising an ink-diffusion-preventing printing device (4), a deviation-correcting device (5), a surface dust-sweeping device (6) and a control screen (7); the rear middle part of the bracket (1) is connected with the conveyor belt (2) through bolts; the top of the bracket (1) is connected with the top plate (3); a deviation correcting device (5) is arranged in the middle of the bottom of the conveyor belt (2); the right side in the front of the conveyor belt (2) is connected with a surface ash sweeping device (6), and the left middle of the surface ash sweeping device (6) is connected with a deviation correcting device (5); a control screen (7) is arranged on the right front side of the conveyor belt (2); the middle part of the bottom of the top plate (3) is provided with an ink mark diffusion prevention printing device (4), and the right middle top of the ink mark diffusion prevention printing device (4) is connected with a deviation correction device (5).

2. The printing device for preventing ink diffusion of printing according to claim 1, wherein the printing device (4) for preventing ink diffusion comprises a motor (401), a first transmission wheel (402), a second transmission wheel (403), a first straight gear (404), a second straight gear (405), a first bevel gear (406), a second bevel gear (407), a third transmission wheel (408), a fourth transmission wheel (409), a first screw rod (4010), a transmission frame (4011), an exchangeable block (4012), a first electric push rod (4013), a third straight gear (4014), a fourth straight gear (4015), a first toothed rod (4016), a first connecting column (4017), a mechanism accommodating chamber (4018), a first transmission rod (4019), an ink box (4020) and an ink absorbing block (4021); the front end axis of the motor (401) is in transmission connection with the first transmission wheel (402); the right lower side of the first transmission wheel (402) is in transmission connection with a second transmission wheel (403); the left side of the second transmission wheel (403) is in transmission connection with the first straight gear (404) through a loose transmission belt; a second spur gear (405) is arranged on the left upper side of the first spur gear (404); the bottom of the first straight gear (404) is connected with a first electric push rod (4013); a third spur gear (4014) is arranged on the left lower side of the first spur gear (404); the left lower side of the second straight gear (405) is in transmission connection with the first bevel gear (406); the front side of the top end of the first bevel gear (406) is meshed with the second bevel gear (407); the top of the second bevel gear (407) is in transmission connection with a third transmission wheel (408); the left side of the third driving wheel (408) is in transmission connection with a fourth driving wheel (409); the bottom of the fourth driving wheel (409) is in transmission connection with the first screw rod (4010); the middle part of the outer surface of the first screw rod (4010) is in transmission connection with the transmission frame (4011); the bottom of the transmission frame (4011) is provided with a replaceable printing block (4012); the left lower side of the axle center of the front end of the third straight gear (4014) is in transmission connection with a fourth straight gear (4015); the bottom of the fourth straight gear (4015) is meshed with the first rack bar (4016); the middle part of the bottom of the first rack bar (4016) is welded with the first connecting column (4017); the top of the outer surface of the first connecting post (4017) is in sliding connection with the mechanism accommodating chamber (4018); the bottom of the first connecting column (4017) is welded with the first transmission rod (4019); the left side of the first transmission rod (4019) is connected with the ink box (4020), and the bottom of the ink box (4020) is connected with the mechanism accommodating chamber (4018); the top of the ink box (4020) is connected with the ink absorbing block (4021); the bottom of the motor (401) is connected with the top plate (3); the right lower side of the second driving wheel (403) is connected with a deviation correcting device (5).

3. The printing ink diffusion resistance printing device according to claim 2, wherein the deviation correcting device (5) comprises a third bevel gear (501), a fourth bevel gear (502), a fifth spur gear (503), a sixth spur gear (504), a second electric push rod (505), a mounting plate (506), a deviation correcting auxiliary block (507), a seventh spur gear (508), a second rack bar (509), a first sliding slot (5010), a second transmission rod (5011), a second connecting post (5012), a deviation correcting splint (5013), a sliding block (5014), a second sliding slot (5015), a first spring (5016) and a second spring (5017); the right front side of the third bevel gear (501) is meshed with the fourth bevel gear (502); the right side of the fourth bevel gear (502) is in transmission connection with a fifth straight gear (503); the left upper side of the fifth straight gear (503) is meshed with the sixth straight gear (504); the top of the sixth straight gear (504) is connected with a second electric push rod (505); the left lower side of the sixth straight gear (504) is meshed with a seventh straight gear (508); the top of the second electric push rod (505) is connected with the mounting flat plate (506); the left side of the top end of the installation flat plate (506) is connected with a deviation rectifying auxiliary block (507); the bottom of the seventh straight gear (508) is meshed with the second rack bar (509); the bottom of the second rack bar (509) is in sliding connection with the first sliding chute (5010); the left side of the second rack bar (509) is welded with a second transmission rod (5011); the left side of the second transmission rod (5011) is connected with a second connecting column (5012); the top of the second connecting column (5012) is in transmission connection with a deviation-rectifying splint (5013); the bottom of the second connecting column (5012) is in transmission connection with the sliding block (5014); the left middle part of the second connecting column (5012) is welded with the first spring (5016); the left bottom of the second connecting column (5012) is welded with a second spring (5017); the bottom of the sliding block (5014) is in sliding connection with the second sliding chute (5015); the left upper side of the rear end shaft center of the third bevel gear (501) is connected with a second transmission wheel (403); the right side of the third bevel gear (501) is connected with a surface ash sweeping device (6).

4. A printing ink spread prevention printing unit according to claim 3, characterized in that the surface dust sweeping device (6) comprises a fifth bevel gear (601), a sixth bevel gear (602), a fifth driving wheel (603), a sixth driving wheel (604), a seventh bevel gear (605), an eighth bevel gear (606), a seventh driving wheel (607), an eighth driving wheel (608), a long gear (609), an eighth spur gear (6010), a ninth bevel gear (6011), a tenth bevel gear (6012), a sweeping head (6013), a mounting suspension plate (6014), a second transmission block (6015), a second lead screw (6016), an eleventh bevel gear (6017), a twelfth bevel gear (6018), a third transmission rod (6019), a thirteenth driving wheel (6020), a telescopic rod (6021), a transmission plate (6022) and a third electric push rod (6023); the right bottom of the fifth bevel gear (601) is meshed with the sixth bevel gear (602); the bottom of the sixth bevel gear (602) is in transmission connection with a fifth transmission wheel (603); the right side of the fifth driving wheel (603) is in driving connection with a sixth driving wheel (604); the top of the sixth transmission wheel (604) is in transmission connection with a seventh bevel gear (605); the left top of the seventh bevel gear (605) is meshed with the eighth bevel gear (606); the top of the seventh bevel gear (605) is in transmission connection with a telescopic rod (6021); the left side of the eighth bevel gear (606) is in transmission connection with a seventh transmission wheel (607); the top of the seventh transmission wheel (607) is in transmission connection with an eighth transmission wheel (608); the left side of an eighth driving wheel (608) is in driving connection with a long gear (609); the left side of the bottom end of the long gear (609) is meshed with an eighth straight gear (6010); the left side of the eighth straight gear (6010) is in transmission connection with a ninth bevel gear (6011); the left bottom of a ninth bevel gear (6011) is meshed with a tenth bevel gear (6012); the left side of a ninth bevel gear (6011) is rotatably connected with an installation suspension plate (6014), and the bottom of the installation suspension plate (6014) is connected with a tenth bevel gear (6012); the bottom of a tenth bevel gear (6012) is in transmission connection with a sweeping head (6013); the top of the mounting suspension plate (6014) is in transmission connection with a second transmission block (6015); the inner middle part of the second transmission block (6015) is in transmission connection with a second screw rod (6016); the right side of the second screw rod (6016) is in transmission connection with an eleventh bevel gear (6017); the right bottom of an eleventh bevel gear (6017) is meshed with a twelfth bevel gear (6018); the axis of a twelfth bevel gear (6018) is sleeved with a third transmission rod (6019), and the bottom of the third transmission rod (6019) is connected with a telescopic rod (6021); the top of the outer surface of the third transmission rod (6019) is sleeved with a thirteenth transmission wheel (6020); the top of the outer surface of the telescopic rod (6021) is in transmission connection with the transmission plate (6022); the left side of the bottom end of the transmission plate (6022) is in transmission connection with a third electric push rod (6023); the left side of the fifth bevel gear (601) is connected with the fourth bevel gear (502).

5. The device according to claim 4, characterized in that said device comprises a housing, when the first electric push rod (4013) stretches and retracts to enable the first straight gear (404) and the second straight gear (405) to be meshed with each other, the second transmission wheel (403) is meshed with and transmits a first straight gear (404), the first straight gear (404) is meshed with and transmits a second straight gear (405), then the second spur gear (405) drives a first bevel gear (406), the first bevel gear (406) is engaged with a second bevel gear (407), then the second bevel gear (407) drives a third driving wheel (408) to rotate, the third driving wheel (408) drives a fourth driving wheel (409) to rotate, the fourth driving wheel (409) drives a first screw rod (4010) to move up and down, a transmission frame (4011) is arranged outside the first screw rod (4010) to move up and down, and finally the transmission frame (4011) drives a replaceable printing block (4012) to move up and down; when the first electric push rod (4013) stretches and retracts to enable the first straight gear (404) and the third straight gear (4014) to be meshed with each other, the second transmission wheel (403) is meshed with and transmits the first straight gear (404), the first straight gear (404) is further meshed with and transmits the third straight gear (4014), then the third straight gear (4014) drives the fourth straight gear (4015) to rotate, the fourth straight gear (4015) is meshed with and transmits the first toothed bar (4016) to enable the first toothed bar to move left and right, the first toothed bar (4016) drives the first connecting column (4017) to move, then the first connecting column (4017) drives the first transmission rod (4019), then the first transmission rod (4019) drives the ink box (4020) to move, and finally the ink suction block (4021) is driven by the ink box (4020) to move left and right; when the first electric push rod (4013) extends and contracts to enable the first straight gear (404) not to be meshed with the second straight gear (405) and the third straight gear (4014) at the same time, the device is kept static.

6. The device for preventing the spread of printing ink according to claim 5, wherein when the third electric push rod (6023) extends and contracts to disengage the eleventh bevel gear (6017) from the twelfth bevel gear (6018) and further engage with the thirteenth driving wheel (6020), the sixth driving wheel (604) drives the telescopic rod (6021), the telescopic rod (6021) drives the third driving rod (6019) to rotate, the third driving rod (6019) drives the thirteenth driving wheel (6020), the thirteenth driving wheel (6020) then engages and drives the eleventh bevel gear (6017), then the eleventh bevel gear (6017) drives the second lead screw (6016) to rotate, and finally the second lead screw (6016) drives the second driving block (6015); when the third electric push rod (6023) stretches to enable an eleventh bevel gear (6017) and a twelfth bevel gear (6018) to be meshed with each other and is disengaged from a thirteenth driving wheel (6020), the sixth driving wheel (604) drives the telescopic rod (6021), the telescopic rod (6021) drives the third driving rod (6019) to rotate, then the third driving rod (6019) drives the twelfth bevel gear (6018), then the twelfth bevel gear (6018) is meshed with the eleventh bevel gear (6017), then the eleventh bevel gear (6017) drives the second screw rod (6016) to rotate, and finally the second screw rod (6016) drives the second driving block (6015); the apparatus remains stationary when the third electric push rod (6023) extends and retracts such that the eleventh bevel gear (6017) does not simultaneously intermesh with the twelfth bevel gear (6018) and the thirteenth drive wheel (6020).

7. A printing unit for printing ink-repellent inks, as claimed in claim 6, characterised in that the left-hand bottom of the unit (4) is provided with a camera.

8. The device according to claim 7, characterized in that a platen is arranged in the conveyor belt (2) on the left and directly below the exchangeable block (4012).