CN111532022A

CN111532022A - Anti-counterfeiting printing machine

Info

Publication number: CN111532022A
Application number: CN202010387861.5A
Authority: CN
Inventors: 闫文霞; 赵定敏
Original assignee: Chuzhou Sanjiewai Industrial Design Co ltd
Current assignee: Chuzhou Sanjiewai Industrial Design Co ltd
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2020-08-14

Abstract

The invention belongs to the technical field of printing machine equipment, and particularly relates to an anti-counterfeiting printing machine; comprises a feeding roller, a discharging roller, a workbench, a printing unit and a heating unit; the printing unit comprises a rolling wheel, a printing wheel and a drying wheel; the heating unit comprises a motor, a cam, a hinged plate, a heating block and a push rod; the ejector rod is connected in the through hole in a sliding manner, the bottom end of the ejector rod is connected in the second sliding groove in a sliding manner, and the top end of the ejector rod is contacted with the heating block; the anti-counterfeiting printing of the packaging paper is realized through the matching of the feeding roller, the discharging roller, the workbench, the printing unit and the heating unit; avoid the wrapping paper at direct and stoving wheel's contact in-process, take place the condition of contracting after the great difference in temperature that the wrapping paper received to guaranteed the printing processingquality to the wrapping paper, made the wrapping paper still can guarantee comparatively level and smooth surface after the printing processing.

Description

Anti-counterfeiting printing machine

Technical Field

The invention belongs to the technical field of printing machine equipment, and particularly relates to an anti-counterfeiting printing machine.

Background

The anti-counterfeiting is verified by a consumer anti-counterfeiting code inquiry center for enterprise products, and is a technical measure product, material, technology and the like for identifying authenticity, preventing counterfeiting, alteration and cloning behaviors and preventing illegal behaviors such as counterfeiting, alteration and cloning and the like by anti-counterfeiting characteristics. The anti-counterfeiting is mainly seen by consumers, is a cognitive tool provided by enterprises for distinguishing true and false by the consumers, and aims to prevent the consumers from being blinded by fake and counterfeit products. The system allows consumers and managers at any level to simply and accurately identify themselves without any instrument, tool or extra fee payment, and the conclusion is accurate and reliable. The printing anti-counterfeiting technology is a comprehensive anti-counterfeiting technology and comprises an anti-counterfeiting design plate making, precise printing equipment, ink, paper and the like matched with the printing equipment. From the perspective of printing technology, the printing anti-counterfeiting technology mainly comprises: the printing technology comprises engraving plate making, computer plate pattern designing, gravure printing, rainbow printing, pattern butt joint, double-sided butt printing technology, multicolor wiring printing, multicolor overprinting, micro printing technology, refraction latent image, invisible image and image mixed printing. Products printed using these new technologies place layer-by-layer obstacles and resistance for counterfeiters.

Some technical schemes related to anti-counterfeiting printing machines also appear in the prior art, for example, a Chinese patent with application number of 2018110439884 discloses a small anti-counterfeiting trademark printing machine, which relates to the field of anti-counterfeiting trademarks. The invention comprises a transmission mechanism, a feeding mechanism, a printing mechanism, a drying mechanism and a discharging mechanism. Drive mechanism includes the driving roller, is equipped with first conveyer belt on the driving roller, and the driving roller both ends all are equipped with the rotation axis of symmetric distribution, and drive mechanism one side upper end is equipped with feeding mechanism, and feeding mechanism includes pay-off box, pay-off axle, is equipped with the second motor on the lateral wall of pay-off box one end. The printing mechanism comprises a printing roller, a printing rod is arranged at the side end of the printing roller, and trademark lines are arranged on the printing rod. The upper end of the other side of the transmission mechanism is provided with a discharging mechanism, the discharging mechanism comprises a discharging shaft, and the discharging shaft is provided with a thread. The printing device is provided with the transmission mechanism and the printing mechanism, when the rotating speeds of the transmission mechanism and the printing mechanism are adjusted to be the same, the roll paper on the first conveyor belt moves to be in contact with the printing rod, trademark patterns on the printing rod can be uniformly and clearly printed on the roll paper, and the printing effect is good; however, the technical scheme still only carries out drying treatment through hot air, and the hot air can form airflow dispersion by the surface resistance of the packaging bag in the process of blowing the hot air to the packaging bag, so that the drying effect is poor, the utilization rate of energy is low, and under the impact and heating action of the airflow, the surface of the packaging bag is easy to deform and curl, so that the printing effect of the packaging bag is influenced.

Disclosure of Invention

In order to make up for the defects of the prior art, the problems that when hot air is used for drying after printing, the hot air is subjected to airflow dispersion due to the surface resistance of the packaging bag in the process of blowing the hot air to the packaging bag, so that the drying effect is poor, the utilization rate of energy is low, and the surface of the packaging bag is easy to deform and curl under the impact and heating action of the airflow, so that the printing effect of the packaging bag is influenced are solved; the invention provides an anti-counterfeiting printing machine.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to an anti-counterfeiting printing machine which comprises a feeding roller, a discharging roller, a workbench, a printing unit and a heating unit, wherein the feeding roller is arranged on the feeding roller; the workbench is provided with a baffle plate, the side wall of the top end of the workbench is provided with a first sliding chute, and a through hole is formed in the first sliding chute and communicated with the bottom end of the workbench; the feeding roller is arranged on one side of the workbench close to the baffle through a bracket; the discharging roller is arranged on one side of the workbench far away from the baffle through a bracket; the printing unit is arranged on the workbench and comprises a rolling wheel, a printing wheel and a drying wheel; the rolling wheel is arranged on the surface of the workbench close to the baffle; the printing wheel is arranged on the surface of the workbench between the rolling wheel and the first sliding chute; the drying wheel is arranged on the surface of the workbench close to the printing wheel, and the first sliding groove is positioned between the printing wheel and the drying wheel; the heating unit comprises a motor, a cam, a hinged plate, a heating block and a push rod; the two cams are respectively arranged at the positions, corresponding to the printing wheel and the drying wheel, of the bottom end of the workbench through supports, and are respectively connected with the printing wheel and the drying wheel through a transmission belt; the motor is arranged at the bottom end of the workbench close to the cam and is connected with the cam through a transmission belt; two ends of the hinged plate are respectively hinged on the side wall of the cam, and the side wall of the top end of the hinged plate is provided with a second sliding groove; the heating block is connected in the first sliding groove in a sliding manner; the top rod is connected in the through hole in a sliding manner, the bottom end of the top rod is connected in the second sliding groove in a sliding manner, and the top end of the top rod is contacted with the heating block; the anti-counterfeiting printing of the packaging paper is realized through the matching of the feeding roller, the discharging roller, the workbench, the printing unit and the heating unit; when the anti-counterfeiting printing paper roll is in work, the printed packaging paper is rolled on a feeding roller, the packaging paper is rewound on a discharging roller after passing through a rolling wheel, a printing wheel and a drying wheel, the packaging paper is rolled by the rolling wheel during printing to be fully unfolded to a flat state, then is subjected to printing treatment by the printing wheel, is subjected to treatment by the drying wheel, is dried on the anti-counterfeiting printing ink on the surface of the packaging paper, and is finally wound by the discharging roller; in the rotation process of printing wheel and stoving wheel, it rotates to drive the cam, the cam makes the articulated slab do the skew motion from top to bottom along with the cam when rotating, because ejector pin bottom sliding connection is in No. two spouts, make the cam drive the ejector pin and do up-and-down reciprocating motion, when ejector pin upward movement, promote the ejecting spout of heating piece and wrapping paper surface contact, the realization is to preheating of wrapping paper, avoid the wrapping paper in direct and stoving wheel's contact process, take place the circumstances of contracting crook after the great difference in temperature that the wrapping paper receives, thereby the printing processingquality to the wrapping paper has been guaranteed, make the wrapping paper still can guarantee comparatively level and smooth surface after the printing processing, strengthen the whole result of use of printing machine, brought very big convenience and easy for the staff.

Preferably, the side wall of the bottom end of the workbench, which is close to the ejector rod, is provided with a fixed box, so that the ejector rod is in sliding connection in the fixed box; a pressing plate is arranged on the side wall of the ejector rod in the fixed box; the pressing plate is connected with the inner side wall of the bottom end of the fixed box through a spring, and an air bag is arranged on the side wall, close to the workbench, of the pressing plate; the surface of the air bag is provided with an air pipe which is communicated with the air bag, and the air pipe penetrates through the surface of the heating block; hot air circulation is formed between the heating block and the packaging paper through the matching of the fixing box, the ejector rod, the pressing plate, the air bag and the air pipe; when the heating device works, the cam is driven to rotate in the rotating process of the printing wheel and the drying wheel, the cam enables the hinged plate to do vertical offset motion along with the cam when rotating, the bottom end of the ejector rod is connected in the second sliding groove in a sliding way, the cam drives the ejector rod to do vertical reciprocating motion, when the ejector rod slides upwards in the fixed box, the pressing plate is driven to move upwards simultaneously, the pressing plate extrudes the air bag in the moving process, the air in the air bag is transmitted to the surface of the heating block through the air pipe after being pressed, when the air passes through the air pipe in the heating block, the temperature of the air is increased after being heated by the heating block, so that when the air is sprayed out through the air pipe, hot air circulation is formed among the heating block, the surface of the workbench and the packaging paper, the uniform heating of the packaging paper is realized, and when hot air is contacted with the heating block in the hot air circulation process, partial, when hot-blast and the wrapping paper contact again, the heat is from hot-blast transfer to wrapping paper department again, effectively avoids the direct contact between wrapping paper and the heating piece to avoid the wrapping bag to receive the great back of the difference in temperature cause its surperficial deformation curl, further strengthen the printing and the stoving effect to the wrapping bag, improve the whole result of use of printing machine.

Preferably, the heating block comprises a first block and a second block; the first block is connected in the first sliding groove in a sliding manner; the second block is connected in the first sliding groove in a sliding mode, the first block and the second block are connected through a spring, and a third block is arranged on the side wall, close to the first block, of the second block, so that the third block is in surface contact with the first block; an opening is formed in the third block close to the through hole; the end parts of the ejector rods, which are close to the first block and the second block, are provided with conical blocks; the heating range of the heating block is enlarged through the matching of the first block, the second block, the third block, the ejector rod and the conical block; when in work, the cam is driven to rotate in the rotating process of the printing wheel and the drying wheel, the hinged plate makes up-and-down offset motion along with the cam when the cam rotates, because the bottom end of the ejector rod is connected in the second sliding groove in a sliding way, the cam drives the ejector rod to do up-and-down reciprocating motion, when the ejector rod slides upwards in the fixed box, the heating block is firstly ejected out of the first sliding groove, and along with the continuous sliding of the ejector rod, the conical block generates extrusion force on the first block and the second block, thereby pushing the first block and the second block to respectively slide towards the directions far away from each other, increasing the contact area between the whole heating block and the surface of the packaging paper, thereby reinforcing the heating effect to the wrapping paper, improving the heating efficiency to the wrapping paper, just being reeled again on the discharge roller when avoiding the printing ink on wrapping paper surface not yet completely dry to cause the condition that the anti-fake pattern on wrapping paper surface appears vaguely.

Preferably, the bottom end of the ejector rod is provided with a hemispherical block, and the hemispherical block is provided with a magnet; the side wall of the second sliding chute is provided with an elastic sheet which has magnetism repulsive to the magnet; the movement of the ejector rod is buffered through the matching of the hemispherical block, the magnet and the elastic sheet; when the printing and drying device works, the cam is driven to rotate in the rotating process of the printing wheel and the drying wheel, the hinged plate makes vertical offset motion along with the cam when the cam rotates, the bottom end of the ejector rod is connected in the second sliding groove in a sliding mode, so that the cam drives the ejector rod to make vertical reciprocating motion, and the bottom end of the ejector rod always makes reciprocating slide in the second sliding groove in the whole motion process of the ejector rod, so that a hemispherical block is arranged at the bottom end of the ejector rod, the contact area between the bottom end of the ejector rod and the second sliding groove is reduced, and the sliding friction force between the ejector rod and the second sliding groove is reduced; and the ejector pin can do up-and-down motion for No. two spouts relatively in the motion process, because the magnetism of magnet and shell fragment is opposite to provide the buffering through shell fragment and magnet to the motion of ejector pin, avoid the ejector pin to be too big to the impact force of No. two spouts, thereby prolong the life of ejector pin and articulated slab, strengthen the whole result of use of printing machine.

Preferably, a first heating plate is arranged on the side wall of the first block close to the second block; the second heating plate is arranged at the position of the second block corresponding to the first heating plate, the end parts of the first heating plate and the second heating plate are in contact with the conical block, and the packaging paper is comprehensively heated through the cooperation of the first heating plate, the second heating plate and the conical block; when the heating plate works, the cam is driven to rotate in the rotating process of the printing wheel and the drying wheel, the hinged plate moves up and down along with the cam when the cam rotates, the bottom end of the ejector rod is connected in the second sliding groove in a sliding manner, the cam drives the ejector rod to move up and down in a reciprocating manner, when the ejector rod slides upwards in the fixed box, the heating block is firstly ejected out of the first sliding groove, and along with the continuous sliding of the ejector rod, the conical block generates extrusion force on the first block and the second block, so that the first block and the second block are pushed to slide in mutually far directions respectively, the contact area between the whole heating block and the surface of packaging paper is increased, because the end parts of the first heating plate and the second heating plate are in contact with the conical block, the first heating plate can fill the gap between the conical block and the first block in the sliding process of the first block and the second block, and the second heating plate can fill the gap between the conical block and the second block, thereby ensuring the overall heating of the packing paper and effectively enhancing the drying effect of the packing paper after printing.

Preferably, the side wall of the first block, which is far away from the conical block, and the side wall of the second block, which is far away from the conical block, are provided with arc-shaped chamfers, so that creases are prevented from appearing on the surface of the packaging paper after the packaging paper is heated; when the packaging bag heating device works, the cam is driven to rotate in the rotating process of the printing wheel and the drying wheel, the hinged plate moves up and down along with the cam when the cam rotates, the bottom end of the ejector rod is connected in the second sliding groove in a sliding manner, the cam drives the ejector rod to move up and down in a reciprocating manner, when the ejector rod slides upwards in the fixed box, the heating block is firstly ejected out of the first sliding groove, the conical block generates extrusion force on the first block and the second block along with the continuous sliding of the ejector rod, the first block and the second block are pushed to slide in the mutually far directions respectively, the contact area between the whole heating block and the surface of packaging paper is increased, after the packaging bag is heated, the plasticity of the packaging bag is increased along with the increase of the temperature, the water caltrops of the side walls of the first block and the second block can generate creases on the surface of the packaging bag, the integral leveling effect of the packaging bag is influenced, and arc chamfers are arranged on the side walls of the, thereby make the heating piece at the in-process with the wrapping bag contact, can realize smooth transition at heating piece edge and workstation surface, effectively avoided the condition that produces the crease on the wrapping bag surface.

The invention has the following beneficial effects:

1. according to the anti-counterfeiting printing machine, the anti-counterfeiting printing of the packaging paper is realized through the matching of the feeding roller, the discharging roller, the workbench, the printing unit and the heating unit, the pre-heating of the packaging paper is realized, and the situation that the packaging paper shrinks and curls after being subjected to a large temperature difference in the process of directly contacting the packaging paper with the drying wheel is avoided, so that the printing processing quality of the packaging paper is ensured, the packaging paper can still ensure a relatively flat surface after being printed, the integral using effect of the printing machine is enhanced, and great convenience and easiness are brought to workers.

2. According to the anti-counterfeiting printing machine, the hot air circulation is formed between the heating block and the packaging paper through the matching of the fixing box, the ejector rod, the pressing plate, the air bag and the air pipe, so that the packaging paper is uniformly heated, in the hot air circulation process, when hot air is contacted with the heating block, part of heat of the heating block is transferred to the hot air, and when the hot air is contacted with the packaging paper, the heat is transferred to the packaging paper from the hot air, so that the direct contact between the packaging paper and the heating block is effectively avoided, the deformation and curling of the surface of the packaging bag caused by overlarge temperature difference of the packaging bag are avoided, the printing and drying effects on the packaging bag are further enhanced, and the integral using effect of the printing machine is improved.

Drawings

The invention will be further explained with reference to the drawings.

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

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a cross-sectional view of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at B;

FIG. 5 is an enlarged view of a portion of FIG. 3 at C;

in the figure: the device comprises a feeding roller 1, a discharging roller 2, a workbench 3, a baffle 31, a first chute 32, a through hole 33, a fixing box 34, a printing unit 4, a rolling wheel 41, a printing wheel 42, a drying wheel 43, a heating unit 5, a motor 51, a cam 52, a hinge plate 53, a second chute 531, a spring plate 532, a heating block 54, a first block 541, a second block 542, a third block 543, an opening 544, a first heating plate 545, a second heating plate 546, a push rod 55, a pressing plate 551, an air bag 552, an air pipe 553, a conical block 554, a hemispherical block 555 and a magnet 556.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 5, the forgery-prevention printing machine according to the present invention includes a feeding roller 1, a discharging roller 2, a working table 3, a printing unit 4, and a heating unit 5; a baffle 31 is arranged on the workbench 3, a first sliding chute 32 is formed in the side wall of the top end of the workbench 3, and a through hole 33 is formed in the first sliding chute 32 and communicated with the bottom end of the workbench 3; the feeding roller 1 is arranged on one side of the workbench 3 close to the baffle 31 through a bracket; the discharging roller 2 is arranged on one side of the workbench 3 far away from the baffle 31 through a bracket; the printing unit 4 is arranged on the workbench 3, and the printing unit 4 comprises a rolling wheel 41, a printing wheel 42 and a drying wheel 43; the rolling wheel 41 is arranged on the surface of the workbench 3 close to the baffle plate 31; the printing wheel 42 is arranged on the surface of the workbench 3 between the rolling wheel 41 and the first sliding chute 32; the drying wheel 43 is arranged on the surface of the workbench 3 close to the printing wheel 42, and the first chute 32 is positioned between the printing wheel 42 and the drying wheel 43; the heating unit 5 comprises a motor 51, a cam 52, a hinge plate 53, a heating block 54 and a push rod 55; the number of the cams 52 is two, the cams are respectively arranged at the positions, corresponding to the printing wheel 42 and the drying wheel 43, at the bottom end of the workbench 3 through supports, and the two cams 52 are respectively connected with the printing wheel 42 and the drying wheel 43 through transmission belts; the motor 51 is arranged at the bottom end of the workbench 3 close to the cam 52, and the motor 51 is connected with the cam 52 through a transmission belt; two ends of the hinged plate 53 are respectively hinged on the side wall of the cam 52, and the side wall of the top end of the hinged plate 53 is provided with a second sliding groove 531; the heating block 54 is connected in the first sliding groove 32 in a sliding manner; the ejector rod 55 is connected in the through hole 33 in a sliding manner, the bottom end of the ejector rod 55 is connected in the second sliding groove 531 in a sliding manner, and the top end of the ejector rod 55 is in contact with the heating block 54; the anti-counterfeiting printing of the packaging paper is realized through the matching of the feeding roller 1, the discharging roller 2, the workbench 3, the printing unit 4 and the heating unit 5; during operation, the printed packaging paper is rolled on the feeding roller 1, the packaging paper is rolled on the discharging roller 2 after passing through the rolling wheel 41, the printing wheel 42 and the drying wheel 43, the packaging paper is rolled by the rolling wheel 41 during printing to be fully unfolded to a flat state, then is printed by the printing wheel 42, is dried by the drying wheel 43, and finally is rolled by the discharging roller 2; in the rotation process of the printing wheel 42 and the drying wheel 43, the cam 52 is driven to rotate, the cam 52 enables the hinged plate 53 to move up and down along with the cam 52 in a shifting mode when rotating, the bottom end of the ejector rod 55 is connected in the second sliding groove 531 in a sliding mode, the cam 52 drives the ejector rod 55 to move up and down in a reciprocating mode, when the ejector rod 55 moves upwards, the ejector heating block 54 is pushed to eject the first sliding groove 32 to be in contact with the surface of the wrapping paper, preheating of the wrapping paper is achieved, the situation that the wrapping paper is in contact with the drying wheel 43 directly is avoided, and shrinkage and curling occur after the temperature difference of the wrapping paper is large, so that the printing quality of the wrapping paper is guaranteed, the wrapping paper can still guarantee a smooth surface after printing, the overall use effect of the printing machine is enhanced, and great convenience and easiness are.

As an embodiment of the present invention, the workbench 3 is provided with a fixed box 34 on the side wall near the bottom end of the top rod 55, so that the top rod 55 is slidably connected in the fixed box 34; a pressing plate 551 is arranged on the side wall of the ejector rod 55 in the fixed box 34; the pressure plate 551 is connected with the inner side wall of the bottom end of the fixed box 34 through a spring, and the pressure plate 551 is provided with an air bag 552 on the side wall close to the workbench 3; an air pipe 553 is arranged on the surface of the air bag 552 and is communicated with the air bag 552, and the air pipe 553 penetrates through the surface of the heating block 54; hot air circulation is formed between the heating block 54 and the wrapping paper by the cooperation of the fixing box 34, the ejector 55, the pressing plate 551, the air bag 552 and the air pipe 553; when the automatic packaging machine works, the cam 52 is driven to rotate in the rotating process of the printing wheel 42 and the drying wheel 43, the hinge plate 53 moves up and down along with the cam 52 in a deviation manner when the cam 52 rotates, the cam 52 drives the ejector rod 55 to move up and down in a reciprocating manner because the bottom end of the ejector rod 55 is connected in the second sliding groove 531 in a sliding manner, when the ejector rod 55 slides up in the fixed box 34, the press plate 551 is driven to move up simultaneously, the press plate 551 extrudes the air bag 552 in the moving process, the air in the air bag 552 after being pressed is transmitted to the surface of the heating block 54 through the air pipe 553, when the air passes through the air pipe 553 in the heating block 54, the temperature of the air is increased after being heated by the heating block 54, so that when the air is sprayed out through the air pipe 553, hot air circulation is formed among the heating block 54, the surface of the workbench 3 and the packaging paper, the uniform heating of, when hot-blast and heating block 54 contact, heating block 54's partial heat transfer to hot-blast department, when hot-blast and wrapping paper contact again, the heat is from hot-blast transfer to wrapping paper department again, effectively avoids the direct contact between wrapping paper and the heating block 54 to avoid the wrapping bag to receive the great back of the difference in temperature cause its surperficial deformation curling, further strengthen the printing and the stoving effect to the wrapping bag, improve the whole result of use of printing machine.

As an embodiment of the present invention, the heating block 54 includes a first block 541 and a second block 542; the first block 541 is connected in the first sliding groove 32 in a sliding manner; the second block 542 is slidably connected in the first sliding groove 32, the first block 541 is connected with the second block 542 through a spring, and a third block 543 is arranged on the side wall of the second block 542 close to the first block 541, so that the third block 543 is in surface contact with the first block 541; an opening 544 is formed in the third block 543 close to the through hole 33; the top rod 55 is provided with a tapered block 554 at the end part close to the first block 541 and the second block 542; the heating range of the heating block 54 is enlarged through the matching of the first block 541, the second block 542, the third block 543, the mandril 55 and the conical block 554; when the automatic wrapping paper feeding device works, in the rotating process of the printing wheel 42 and the drying wheel 43, the cam 52 is driven to rotate, the hinge plate 53 moves up and down along with the cam 52 when the cam 52 rotates, and as the bottom end of the ejector rod 55 is connected in the second sliding groove 531 in a sliding manner, the cam 52 drives the ejector rod 55 to move up and down in a reciprocating manner, when the ejector rod 55 slides upwards in the fixed box 34, the heating block 54 is firstly ejected out of the first sliding groove 32, and along with the continuous sliding of the ejector rod 55, the conical block 554 generates extrusion force on the first block 541 and the second block 542, so that the first block 541 and the second block 542 are respectively pushed to slide in the directions away from each other, the contact area between the whole heating block 54 and the surface of the wrapping paper is increased, the heating effect on the wrapping paper is enhanced, the heating efficiency on the wrapping paper is improved, and the situation that the ink on the surface of the wrapping paper is, thereby causing the situation that the anti-counterfeiting pattern on the surface of the wrapping paper is blurred.

As an embodiment of the present invention, a hemisphere block 555 is installed at the bottom end of the top rod 55, and a magnet 556 is disposed on the hemisphere block 555; the side wall of the second sliding groove 531 is provided with an elastic sheet 532, and the elastic sheet 532 has magnetism repulsive to the magnet 556; the movement of the ejector rod 55 is buffered through the matching of the hemispherical block 555, the magnet 556 and the elastic sheet 532; during operation, in the rotating process of the printing wheel 42 and the drying wheel 43, the cam 52 is driven to rotate, the cam 52 enables the hinge plate 53 to do vertical offset motion along with the cam 52 when rotating, and the bottom end of the ejector rod 55 is connected in the second sliding groove 531 in a sliding manner, so that the cam 52 drives the ejector rod 55 to do vertical reciprocating motion, and in the whole moving process of the ejector rod 55, the bottom end of the ejector rod 55 always slides in the second sliding groove 531 in a reciprocating manner, so that the hemispherical block 555 is arranged at the bottom end of the ejector rod 55, the contact area between the bottom end of the ejector rod 55 and the second sliding groove 531 is reduced, and the sliding friction force between the ejector rod 55 and the second sliding groove 531 is reduced; and the ejector pin 55 can do up-and-down motion relative to the second sliding groove 531 in the motion process, and because the magnets 556 and the elastic sheets 532 are opposite in magnetism, the motion of the ejector pin 55 is buffered through the elastic sheets 532 and the magnets 556, the overlarge impact force of the ejector pin 55 on the second sliding groove 531 is avoided, the service lives of the ejector pin 55 and the hinge plate 53 are prolonged, and the whole using effect of the printing machine is enhanced.

As an embodiment of the present invention, the first block 541 is provided with a first heating plate 545 on a side wall near the second block 542; the second heating plate 546 is arranged at the position, corresponding to the first heating plate 545, of the second block 542, the end parts of the first heating plate 545 and the second heating plate 546 are in contact with the conical block 554, and the first heating plate 545, the second heating plate 546 and the conical block 554 are matched to realize overall heating of the wrapping paper; when the heating device works, in the rotating process of the printing wheel 42 and the drying wheel 43, the cam 52 is driven to rotate, the hinge plate 53 moves up and down along with the cam 52 when the cam 52 rotates, the cam 52 drives the ejector rod 55 to move up and down in a reciprocating manner due to the fact that the bottom end of the ejector rod 55 is connected in the second sliding groove 531 in a sliding manner, when the ejector rod 55 slides upwards in the fixed box 34, the heating block 54 is firstly ejected out of the first sliding groove 32, along with the continuous sliding of the ejector rod 55, the conical block 554 generates extrusion force on the first block 541 and the second block 542, the first block 541 and the second block 542 are pushed to respectively slide in the directions far away from each other, the contact area between the whole heating block 54 and the surface of the wrapping paper is increased, and because the end parts of the first heating plate 545 and the second heating plate 546 are in contact with the conical block 554, the first heating plate 545 can fill up the gap between the conical block 554 and the first block 541 in the sliding process of the first block, no. two hot plate 546 can fill up the space between conical block 554 and No. two blocks 542 to guaranteed the comprehensive heating to the wrapping paper, effectively strengthened the stoving effect of wrapping paper after the printing.

As an embodiment of the present invention, the side wall of the first block 541 far away from the tapered block 554 and the side wall of the second block 542 far away from the tapered block 554 are both provided with arc-shaped chamfers, so that the surface of the wrapping paper after being heated is prevented from being creased; when the packaging bag heating device works, in the rotating process of the printing wheel 42 and the drying wheel 43, the cam 52 is driven to rotate, the hinge plate 53 moves up and down along with the cam 52 when the cam 52 rotates, the cam 52 drives the ejector rod 55 to move up and down in a reciprocating mode due to the fact that the bottom end of the ejector rod 55 is connected in the second sliding groove 531 in a sliding mode, when the ejector rod 55 slides upwards in the fixing box 34, the heating block 54 is firstly ejected out of the first sliding groove 32, along with the continuous sliding of the ejector rod 55, the conical block 554 generates extrusion force on the first block 541 and the second block 542, the first block 541 and the second block 542 are pushed to respectively slide in the mutually far direction, the contact area between the whole heating block 54 and the surface of the packaging bag is increased, after the packaging bag is heated, the plasticity of the packaging bag is increased along with the increase of the temperature, the water caltrops on the side walls of the first block 541 and the second block 542 generate creases, therefore, the side wall of the first block 541 far away from the tapered block 554 and the side wall of the second block 542 far away from the tapered block 554 are both provided with arc-shaped chamfers, so that in the process that the heating block 54 is in contact with a packaging bag, smooth transition can be realized between the edge of the heating block 54 and the surface of the workbench 3, and the condition that creases are generated on the surface of the packaging bag is effectively avoided.

During operation, the printed packaging paper is rolled on the feeding roller 1, the packaging paper is rolled on the discharging roller 2 after passing through the rolling wheel 41, the printing wheel 42 and the drying wheel 43, the packaging paper is rolled by the rolling wheel 41 during printing to be fully unfolded to a flat state, then is printed by the printing wheel 42, is dried by the drying wheel 43, and finally is rolled by the discharging roller 2; in the rotation process of the printing wheel 42 and the drying wheel 43, the cam 52 is driven to rotate, the cam 52 enables the hinged plate 53 to move up and down along with the cam 52 in a deviation manner when rotating, the bottom end of the ejector rod 55 is connected in the second sliding groove 531 in a sliding manner, the cam 52 drives the ejector rod 55 to move up and down in a reciprocating manner, when the ejector rod 55 moves upwards, the heating block 54 is pushed out to eject the first sliding groove 32 to be in contact with the surface of the wrapping paper, the wrapping paper is preheated, the situation that the wrapping paper contracts and curls after being subjected to a large temperature difference in the direct contact process of the wrapping paper and the drying wheel 43 is avoided, the printing processing quality of the wrapping paper is ensured, the relatively flat surface of the wrapping paper can be ensured after printing processing, the integral using effect of the printing machine is enhanced, and great convenience and easiness; in the rotation process of the printing wheel 42 and the drying wheel 43, the cam 52 is driven to rotate, the cam 52 enables the hinged plate 53 to do up-and-down deviation movement along with the cam 52 when rotating, because the bottom end of the ejector rod 55 is connected in the second sliding groove 531 in a sliding way, the cam 52 drives the ejector rod 55 to do up-and-down reciprocating movement, when the ejector rod 55 slides upwards in the fixed box 34, the pressing plate 551 is driven to move upwards simultaneously, the pressing plate 551 extrudes the air bag 552 in the movement process, the air in the air bag 552 after being pressed is transmitted to the surface of the heating block 54 through the air pipe 553, when the air passes through the air pipe 553 in the heating block 54, the air temperature is increased after being heated by the heating block 54, so that when the air is sprayed out through the air pipe, hot air circulation is formed among the heating block 54, the surface 553 of the workbench 3 and the wrapping paper, the uniform heating of the wrapping, when hot air is contacted with the heating block 54, partial heat of the heating block 54 is transferred to the hot air, and when the hot air is contacted with the packaging paper, the heat is transferred to the packaging paper from the hot air, so that the direct contact between the packaging paper and the heating block 54 is effectively avoided, the deformation and curling of the surface of the packaging bag caused by overlarge temperature difference of the packaging bag are avoided, the printing and drying effects on the packaging bag are further enhanced, and the integral using effect of the printing machine is improved; in the rotating process of the printing wheel 42 and the drying wheel 43, the cam 52 is driven to rotate, the cam 52 enables the hinged plate 53 to move up and down along with the cam 52 in a deviation manner when rotating, because the bottom end of the ejector rod 55 is connected in the second sliding groove 531 in a sliding manner, the cam 52 drives the ejector rod 55 to move up and down in a reciprocating manner, when the ejector rod 55 slides upwards in the fixed box 34, the heating block 54 is firstly ejected out of the first sliding groove 32, and along with the continuous sliding of the ejector rod 55, the conical block 554 generates extrusion force on the first block 541 and the second block 542, so that the first block 541 and the second block 542 are respectively pushed to slide in the directions far away from each other, the contact area between the whole heating block 54 and the surface of the wrapping paper is increased, the heating effect on the wrapping paper is enhanced, the heating efficiency on the wrapping paper is improved, and the situation that the ink on the surface of the wrapping paper is, thereby causing the situation that the anti-counterfeiting pattern on the surface of the wrapping paper is fuzzy; in the rotating process of the printing wheel 42 and the drying wheel 43, the cam 52 is driven to rotate, the cam 52 enables the hinge plate 53 to do vertical offset motion along with the cam 52 when rotating, the bottom end of the ejector rod 55 is connected in the second sliding groove 531 in a sliding manner, so that the cam 52 drives the ejector rod 55 to do vertical reciprocating motion, and in the whole moving process of the ejector rod 55, the bottom end of the ejector rod 55 always slides in the second sliding groove 531 in a reciprocating manner, therefore, the hemispherical block 555 is arranged at the bottom end of the ejector rod 55, the contact area between the bottom end of the ejector rod 55 and the second sliding groove 531 is reduced, and the sliding friction force between the ejector rod 55 and the second sliding groove 531 is reduced; in addition, the ejector rod 55 moves up and down relative to the second sliding groove 531 in the moving process, and due to the fact that the magnets 556 and the elastic sheets 532 are opposite in magnetism, the movement of the ejector rod 55 is buffered through the elastic sheets 532 and the magnets 556, the situation that the impact force of the ejector rod 55 on the second sliding groove 531 is too large is avoided, the service lives of the ejector rod 55 and the hinge plate 53 are prolonged, and the overall using effect of the printing machine is enhanced; in the rotating process of the printing wheel 42 and the drying wheel 43, the cam 52 is driven to rotate, the hinge plate 53 moves up and down along with the cam 52 when the cam 52 rotates, the bottom end of the ejector rod 55 is connected in the second sliding groove 531 in a sliding manner, so that the cam 52 drives the ejector rod 55 to reciprocate up and down, when the ejector rod 55 slides upwards in the fixed box 34, the heating block 54 is firstly ejected out of the first sliding groove 32, and along with the continuous sliding of the ejector rod 55, the conical block 554 generates extrusion force on the first block 541 and the second block 542, so that the first block 541 and the second block 542 are respectively pushed to slide in the directions far away from each other, the contact area between the whole heating block 54 and the surface of the wrapping paper is increased, and because the end parts of the first heating plate 545 and the second heating plate 546 are both in contact with the conical block 554, the first heating plate can fill up the gap between the conical block 554 and the first block 541 in the sliding process of the first block 541 and the second block 542, the second heating plate 546 can fill the gap between the conical block 554 and the second block 542, so that the packaging paper is comprehensively heated, and the drying effect of the printed packaging paper is effectively enhanced; in the rotating process of the printing wheel 42 and the drying wheel 43, the cam 52 is driven to rotate, the cam 52 enables the hinge plate 53 to do vertical offset motion along with the cam 52 when rotating, because the bottom end of the ejector rod 55 is connected in the second sliding groove 531 in a sliding manner, the cam 52 drives the ejector rod 55 to do vertical reciprocating motion, when the ejector rod 55 slides upwards in the fixed box 34, the heating block 54 is firstly ejected out of the first sliding groove 32, and along with the continuous sliding of the ejector rod 55, the conical block 554 generates extrusion force on the first block 541 and the second block 542, so that the first block 541 and the second block 542 are respectively pushed to slide in the directions far away from each other, the contact area between the whole heating block 54 and the surface of the packaging paper is increased, when the plasticity of the packaging bag is increased along with the increase of the temperature after the packaging bag is heated, the water caltrops on the side walls of the first block 541 and the second block 542 can generate creases on the surface, therefore, the side wall of the first block 541 far away from the tapered block 554 and the side wall of the second block 542 far away from the tapered block 554 are both provided with arc-shaped chamfers, so that in the process that the heating block 54 is in contact with a packaging bag, smooth transition can be realized between the edge of the heating block 54 and the surface of the workbench 3, and the condition that creases are generated on the surface of the packaging bag is effectively avoided.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An anti-counterfeiting printing machine is characterized in that: comprises a feeding roller (1), a discharging roller (2), a workbench (3), a printing unit (4) and a heating unit (5); a baffle (31) is arranged on the workbench (3), a first sliding chute (32) is formed in the side wall of the top end of the workbench (3), and a through hole (33) is formed in the first sliding chute (32) and communicated with the bottom end of the workbench (3); the feeding roller (1) is arranged on one side of the workbench (3) close to the baffle (31) through a bracket; the discharging roller (2) is arranged on one side of the workbench (3) far away from the baffle (31) through a bracket; the printing unit (4) is arranged on the workbench (3), and the printing unit (4) comprises a rolling wheel (41), a printing wheel (42) and a drying wheel (43); the rolling wheel (41) is arranged on the surface of the workbench (3) close to the baffle (31); the printing wheel (42) is arranged on the surface of the workbench (3) between the rolling wheel (41) and the first sliding chute (32); the drying wheel (43) is arranged on the surface of the workbench (3) close to the printing wheel (42), and the first sliding chute (32) is positioned between the printing wheel (42) and the drying wheel (43); the heating unit (5) comprises a motor (51), a cam (52), a hinge plate (53), a heating block (54) and a push rod (55); the number of the cams (52) is two, the cams are respectively arranged at the positions, corresponding to the printing wheel (42) and the drying wheel (43), of the bottom end of the workbench (3) through supports, and the two cams (52) are respectively connected with the printing wheel (42) and the drying wheel (43) through transmission belts; the motor (51) is arranged at the bottom end of the workbench (3) close to the cam (52), and the motor (51) is connected with the cam (52) through a transmission belt; two ends of the hinged plate (53) are respectively hinged on the side wall of the cam (52), and a second sliding groove (531) is formed in the side wall of the top end of the hinged plate (53); the heating block (54) is connected in the first sliding groove (32) in a sliding manner; the ejector rod (55) is connected in the through hole (33) in a sliding manner, the bottom end of the ejector rod (55) is connected in the second sliding groove (531) in a sliding manner, and the top end of the ejector rod (55) is in contact with the heating block (54); the anti-counterfeiting printing of the packaging paper is realized through the matching of the feeding roller (1), the discharging roller (2), the workbench (3), the printing unit (4) and the heating unit (5).

2. A security printer according to claim 1, wherein: the side wall of the bottom end of the workbench (3) close to the ejector rod (55) is provided with a fixed box (34), so that the ejector rod (55) is connected in the fixed box (34) in a sliding way; a pressing plate (551) is arranged on the side wall of the ejector rod (55) in the fixed box (34); the pressing plate (551) is connected with the inner side wall of the bottom end of the fixed box (34) through a spring, and an air bag (552) is arranged on the side wall of the pressing plate (551) close to the workbench (3); an air pipe (553) is arranged on the surface of the air bag (552) and is communicated with the air bag (552), and the air pipe (553) penetrates through the surface of the heating block (54); hot air circulation is formed between the heating block (54) and the wrapping paper by the cooperation of the fixing box (34), the ejector rod (55), the pressure plate (551), the air bag (552) and the air pipe (553).

3. A security printer according to claim 2, wherein: the heating block (54) comprises a first block (541) and a second block (542); the first block (541) is connected in the first sliding groove (32) in a sliding manner; the second block (542) is connected in the first sliding groove (32) in a sliding mode, the first block (541) is connected with the second block (542) through a spring, and a third block (543) is arranged on the side wall, close to the first block (541), of the second block (542), so that the third block (543) is in surface contact with the first block (541); an opening (544) is formed in the third block (543) close to the through hole (33); the end parts of the ejector rod (55) close to the first block (541) and the second block (542) are provided with conical blocks (554); the heating range of the heating block (54) is enlarged through the matching of the first block (541), the second block (542), the third block (543), the ejector rod (55) and the conical block (554).

4. A security printer according to claim 3, wherein: the bottom end of the ejector rod (55) is provided with a semispherical block (555), and the semispherical block (555) is provided with a magnet (556); the side wall of the second sliding groove (531) is provided with an elastic sheet (532), and the elastic sheet (532) has magnetism repulsive to the magnet (556); the movement of the ejector rod (55) is buffered through the matching of the hemispherical block (555), the magnet (556) and the elastic sheet (532).

5. A security printer according to claim 3, wherein: the first heating plate (545) is arranged on the side wall of the first block (541) close to the second block (542); no. two blocks (542) are provided with No. two heating plates (546) at the position corresponding to the first heating plate (545), and the ends of the first heating plate (545) and the second heating plate (546) are both contacted with the conical blocks (554), so that the wrapping paper is comprehensively heated through the cooperation of the first heating plate (545), the second heating plate (546) and the conical blocks (554).

6. A security printer according to claim 5, wherein: the side wall of the first block (541) far away from the conical block (554) and the side wall of the second block (542) far away from the conical block (554) are provided with arc-shaped chamfers, so that the surface of the packaging paper is prevented from being creased after being heated.