CN115556464A - Wine box packing is with intaglio printing device - Google Patents

Abstract

The invention relates to the technical field of intaglio printing, in particular to an intaglio printing device for wine box packaging, which comprises: a first frame; pressing rollers; a gravure roll having a printing groove formed on a surface thereof; the refining rollers are provided with two refining rollers, the refining rollers are close to the pressing part of the gravure printing roller and the pressing roller, and the two refining rollers are used for pushing up ink falling in the printing groove and are respectively tangent to the two sides of the gravure printing roller; according to the invention, the ink in the printing groove of the gravure roller is pushed by the material homogenizing rollers which are arranged close to the two sides of the imprinting positions of the gravure roller and the pressing roller and are tangent to the gravure roller, so that the problem that the printing quality is influenced due to uneven ink distribution caused by the fact that the ink in the printing groove of the gravure roller at the imprinting positions of the gravure roller and the pressing roller drops is solved.

Description

Wine box packing is with intaglio printing device

Technical Field

The invention relates to the technical field of intaglio printing, in particular to an intaglio printing device for wine box packaging.

Background

The existing intaglio printing press coats the ink on the intaglio plate surfaces of the plate roll during the rotation of the plate roll by immersing a portion of the plate roll in the ink, and then prints the ink on the plate surfaces onto the printing substrate. However, in the process of inking the plate roller, because the ink splashes from the plate roller surface due to the centrifugal force of the plate roller and the gravity of the ink, the waste of the ink and the environmental pollution are caused, and if the plate roller is separated from the ink, the ink can not be uniformly coated on the intaglio plate surface, so that the contradiction problem between the realization of uniform inking of the plate roller surface and the prevention of the ink splashing from the plate roller surface is formed in the prior art;

the Chinese utility model with the publication number of CN203331552U discloses a Chinese utility model, which comprises a frame, wherein a paper collecting and releasing mechanism and a paper material transmission mechanism are arranged on the frame, a printing plate roller is arranged in the middle of the paper material transmission mechanism, an ink tank is arranged below the printing plate roller, an ink supply roller is arranged above the right of the ink tank, an ink even roller is arranged above the left of the ink tank, the ink supply roller and the ink even roller are both parallel to the printing plate roller, and are parallel to the printing plate roller and are provided with a compression roller above the printing plate roller, the ink tank is connected with an oil storage tank through a pipeline, a liquid level sensor is arranged in the ink tank, the liquid level sensor is connected with a touch screen controller through a signal cable, and the opening and closing of an ink delivery pump at the outlet of the oil storage tank are controlled through a set program in the controller;

although the scheme can solve the problem of ink splashing during oil supply of an oil supply system to a certain extent, the problem that the ink at the stamping part of the printing roller is not uniformly distributed or is lack due to gravity and stamping pressure of the printing roller is not solved, and further the printing quality is influenced; meanwhile, the scheme does not solve the problem that white flowers and sand holes appear in the printing process due to the existence of air bubbles in the ink, so that the prior art needs to be further improved.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a gravure printing device for wine box packaging, which pushes ink in a printing groove of a gravure roller through a material homogenizing roller which is arranged close to two sides of the imprinting position of the gravure roller and a pressing roller and is tangent to the gravure roller, so that the problem that the ink in the printing groove of the gravure roller at the imprinting position of the gravure roller and the pressing roller drops to cause uneven ink distribution and influence the printing quality is solved.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a wine box packing is with intaglio printing device, includes:

a first frame;

pressing rollers;

a gravure roll having a printing groove formed on a surface thereof;

and the refining rollers are provided with two refining rollers close to the pressing part of the gravure printing roller and the pressing roller and are used for pushing up the ink falling in the printing groove, and the two refining rollers are respectively tangent to two sides of the gravure printing roller.

As a refinement, the conveying device also comprises a conveying assembly, wherein the conveying assembly comprises a conveying roller; the conveying roller is used for guiding the printed matter to be printed.

As an improvement, the pressing roller, the gravure printing roller and the refining roller are directly or indirectly arranged on a first machine frame;

as an improvement, the pressing roller is connected with a second frame, and the second frame is connected with the first frame through a first telescopic piece;

as an improvement, the first telescopic piece is an electric telescopic rod or a telescopic cylinder;

as an improvement, a pressure-maintaining shell is arranged on the outer side of the gravure printing roller;

the pressure maintaining shell is provided with a feed inlet communicated with the pressure maintaining shell along the rotation direction of the gravure printing roller.

As an improvement, a refining part is arranged at the position, close to the refining roller, of the pressure maintaining shell; the material homogenizing part is attached to the upper part of the material homogenizing roller and the roller surface of the gravure printing roller.

As an improvement, the end part of the feed inlet is provided with a conveying pipe, and the middle part of the conveying pipe is provided with a first exhaust assembly.

As an improvement, the first exhaust assembly comprises:

at least two cutting webs;

the air guide pipe is arranged between the adjacent cutting nets and is higher than the refining roller;

an air guide impeller arranged in the conveying pipe and extending into the air guide pipe.

As an improvement, a plurality of air guide impellers are arranged, and one sides close to the air guide impellers are arranged in a meshed manner;

the air guide impeller includes:

a first impeller in a tapered shape having a large lower end and a small upper end;

and the second impeller is connected with the upper end of the first impeller, extends into the air duct and is spirally arranged.

As an improvement, the number of the air guide impellers is two, and the upper end of one air guide impeller is in power connection with a second driving piece arranged on the rack; concave arc-shaped guide plates are arranged at the two air guide impellers, and part of blades of the air guide impellers extend into the concave positions of the arc-shaped guide plates;

the cutting net is arranged between the two arc-shaped guide plates and is positioned at the rotating tangent position of the first impeller.

As an improvement, concave arc-shaped guide plates are arranged at the two first impellers, and part of blades of the first impellers extend into concave positions of the arc-shaped guide plates;

as an improvement, the other end of the air duct is communicated with an ink storage box, and a weight-adjustable pressing plate assembly is arranged at the upper part of the ink storage box for storing ink.

As an improvement, the upper end of the air duct is provided with a sealing plug or a one-way air outlet valve, and the change of the ink pressure at the air duct is reduced by the arrangement of the sealing plug or the one-way air outlet valve; meanwhile, the sealing plug is opened periodically to discharge the guided bubbles.

As an improvement, the platen assembly comprises:

the floating plate is arranged at the upper part of the inner side of the ink storage box in a sliding way;

the storage box is arranged in the middle of the upper part of the floating plate;

and the quantitative conveying assembly extends into the storage box.

As an improvement, the upper end of the quantitative conveying component is communicated with a liquid storage tank;

as an improvement, a scale is arranged below the storage box, the scale is arranged in the middle of the upper part of the floating plate, and the storage box is weighed by the scale arranged below the storage box, so that the weight of the storage box can be determined;

as a refinement, the metered dose delivery assembly comprises: the device comprises a delivery pump capable of forward and reverse delivery, a telescopic pipe communicated with the delivery pump, an electromagnetic valve arranged at the upper end of the telescopic pipe, a flow meter and a controller, wherein the delivery pump is a positive displacement pump or a plunger pump capable of forward and reverse delivery; the controller is electrically connected with the flowmeter and the electromagnetic valve, the flow of the fluid passing through the telescopic pipe is measured by the flowmeter, and the flow of the fluid passing through the telescopic pipe is fed back to the controller, so that the controller controls the opening and closing of the electromagnetic valve, and the control of the flow of the fluid entering and exiting the storage box is realized.

As an improvement, the lower part of the ink storage box is provided with a feed pipe and a valve arranged at the feed pipe, ink enters the ink storage box through the feed pipe, and the feed pipe is opened or closed through the valve.

As an improvement, a partition plate is arranged in the ink storage box, a filter screen is arranged at the middle lower part of the partition plate, and a gap is formed between the partition plate and the bottom of the ink storage box; the bottom of the ink storage box, which is positioned at the gap, is provided with a waterproof floating rope, and the waterproof floating rope is positioned on one side, away from the feeding pipe, of the partition plate.

The invention has the beneficial effects that:

1. according to the invention, through the matched use of the material homogenizing roller arranged at the gravure printing roller and the pressure maintaining shell, the ink falling downwards at the roller surface concave part of the gravure printing roller is pushed upwards, so that the ink uniformity of the roller surface of the gravure printing roller is realized, and the influence of gravity on the printing process of a printed matter is reduced;

2. the gravure printing roller is wrapped by the pressure maintaining shell, so that the exposure of ink on the surface of the gravure printing roller to the environment can be reduced, the humidity of the ink on the surface of the gravure printing roller can be maintained, meanwhile, the pressure maintaining shell also has the effect of maintaining the pressure of the ink on the surface of the gravure printing roller, and the problems that a large amount of bubbles are generated in the ink again to cause white flowers, sand holes and the like in the printing process of a printed matter due to the fact that the ink enters the ink storage box circularly and air in the environment is brought into the ink storage box can be avoided; meanwhile, the problem of poor transfer caused by drying and solidification of the ink on the surface of the gravure printing roller exposed in the environment can be avoided or reduced;

3. according to the ink jet printing device, the cutting nets are arranged in the conveying pipe, so that the ink flowing through the conveying pipe can be cut and larger bubbles can be blocked, the bubbles have a floating trend, the bubbles in the ink flowing through the cutting nets can be filtered and guided to the air guide pipe, and meanwhile, the rotating air guide impeller can guide the bubbles in the ink between the two cutting nets out, so that the overflowing speed and the overflowing amount of the bubbles in the ink in the conveying pipe are improved, and the cleaning effect of the bubbles in the ink is improved;

4. according to the invention, the first impeller is set to be in a conical shape with a small upper end and a large lower end, so that bubbles in the ink can be guided upwards, the plurality of air guide impellers are meshed to rotate to synchronously rotate to guide the bubbles to ascend and overflow, and the effect of removing the bubbles in the ink is improved;

5. according to the invention, the arc-shaped guide plate is arranged, part of the blades of the air guide impeller are positioned on the inwards concave side of the arc-shaped guide plate, and the two air guide impellers are driven to rotate by the second driving part of the motor or the servo motor, so that on one hand, partial power can be provided for conveying ink in the conveying pipe to better maintain the stability of the pressure of the ink in the pressure maintaining shell, and on the other hand, the rotating first impeller can guide bubbles contained in most ink to the second impeller and then is upwards guided and released by the second impeller along the air guide pipe, and the cutting net is arranged at the rotating tangent position of the first impeller, so that the bubbles accumulated at the cutting net can be taken away by the first impeller and are guided to upwards flow and be discharged, and the ink quality can be improved, and the printing quality can be improved;

6. according to the invention, the floating plate is arranged in the ink storage box, so that the floating plate floats on the liquid level of the ink, the pressure of the floating plate on the ink is adjusted by storing liquid or powder with proper weight in the storage box, and the weight of the storage box is adjusted by automatically pumping out the liquid or putting the liquid into the storage box through the quantitative conveying assembly;

in conclusion, the invention has the advantages of simple structure, good printing quality and the like.

Drawings

FIG. 1 is a schematic diagram of the main structure of the present invention;

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

FIG. 3 is a side view of the overall structure of the present invention;

FIG. 4 is a top view of the overall structure of the present invention;

FIG. 5 is a schematic diagram of the relationship between the first exhaust assembly and the ink reservoir according to the present invention;

FIG. 6 is a schematic diagram of the internal structure of the first exhaust assembly according to the present invention;

FIG. 7 is a partial enlarged view of FIG. 6 at B;

FIG. 8 is a schematic view of an overall structure of the ink storage box of the present invention;

FIG. 9 is a schematic view of the internal structure of the ink storage box according to the present invention;

FIG. 10 is a diagram showing the positional relationship between the waterproof float rope and the partition plate according to the present invention;

description of the drawings: the device comprises a first machine frame 1, printed matters 10, a driving motor 11, a pressing roller 2, a first telescopic piece 201, a gravure printing roller 21, a printing groove 211, an embossing area 212, a non-embossing area 213, a refining roller 22, a pressure maintaining shell 23, a feed inlet 24, a refining part 25, a conveying pipe 26, a first exhaust component 3, a cutting net 31, an air guide pipe 32, an air guide impeller 33, a first impeller 331, a second impeller 332, a second driving piece 333, an arc-shaped guide plate 34, an ink storage box 4, a pressure plate component 41, a floating plate 411, a storage box 412, a quantitative conveying component 413, a conveying pump 4131, an expansion pipe 4132, a liquid storage box 414, a weighing device 415, a feeding pipe 42, a partition plate 43, a filter screen 431 and a waterproof floating rope 432.

Detailed Description

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

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Example one

As shown in fig. 1-2, the present embodiment provides a gravure printing device for wine box packaging, which includes:

a first frame 1;

a pressing roller 2;

a gravure roll 21, the surface of which is provided with printing grooves 211;

and the refining rollers 22 are provided with two parts close to the pressing part of the gravure printing roller 21 and the pressing roller 2, and the two parts of the refining rollers 22 used for pushing up the ink falling in the printing groove 211 are respectively tangent to the two sides of the gravure printing roller 21.

Further, as shown in fig. 3-4, the device further comprises a conveying assembly 5, wherein the conveying assembly 5 comprises a conveying roller 51; the transport roller 51 is used to guide the printed matter 10 to be printed.

Further, the press roll 2, the gravure roll 21 and the refining roll 22 are directly or indirectly mounted on the first frame 1;

further, the pressing roller 2 is connected with a second frame, and the second frame is connected with the first frame 1 through a first telescopic piece 201;

further, the first telescopic member 201 is an electric telescopic rod or a telescopic cylinder;

note that, by passing the printed matter 10 between the press roller 2 and the gravure roll 21 during transportation, the surface of the gravure roll 21 is coated with ink, and the press roller 2 is driven by the first extensible member 201 to control the pressing force during printing;

because the roll surface of the gravure roll 21 is concave, ink in the gravure roll 21 has a tendency of falling downwards under the action of gravity, and the ink falling downwards from the concave part of the roll surface of the gravure roll 21 is pushed upwards by the material homogenizing roll 22 arranged on the right side of the gravure roll 21, so that the ink on the roll surface of the gravure roll 21 is uniform, and the influence of gravity on the printing process of the printed matter 10 is reduced; one of the refining rollers 22 is positioned at one side where the pressing roller 2 and the gravure printing roller 21 are rotationally input, the refining roller 22 rotates forwards to extrude ink to the pressing position of the pressing roller 2 and the gravure printing roller 21, the other refining roller 22 is positioned at one side where the pressing roller 2 and the gravure printing roller 21 are rotationally output, the refining roller 22 rotates backwards to extract the ink at the concave position of the gravure printing roller 21 at the pressing position of the pressing roller 2 and the gravure printing roller 21 so as to reduce the phenomenon that the ink is extruded downwards to the other side to reduce the ink between the pressing roller 2 and the gravure printing roller 21, and the gravure printing roller 21 rotates forwards; meanwhile, the distribution rollers 22 located at both sides of the gravure roll 21 can scrape or block ink on the gravure roll 21 at other axial surface positions except for the ink in the printing groove 211, so that the gravure roll 21 can perform printing normally.

Further, as shown in fig. 1-2, a pressure-holding shell 23 is arranged outside the gravure roll 21;

the pressure-maintaining shell 23 is provided with a feed port 24 communicating with the pressure-maintaining shell 23 along the rotation direction of the gravure roll 21.

It should be noted that, the pressure maintaining shell 23 wraps the gravure roll 21, which can reduce the exposure of the ink on the surface of the gravure roll 21 to the environment, and further can maintain the humidity of the ink on the surface of the gravure roll 21, and at the same time, the pressure maintaining shell 23 also has the effect of maintaining the pressure of the ink on the surface of the gravure roll 21, and through the material mixing rolls 22 arranged on both sides of the gravure roll 21, the downward pushing of the ink falling from the roll surface of the gravure roll 21 is realized, because the pressure maintaining shell 23 maintains the pressure of the ink on the surface of the gravure roll 21, the ink in the printing grooves 211 between the top of the gravure roll 21 and the pressure roll 2 is dropped by gravity, and is blocked by the material mixing roll 22 near the material mixing roll 22, when the material mixing roll 22 rotates, the ink dropping ink between the material mixing roll 22 and the gravure roll 21 cannot be driven to the direction far away from the pressure roll 2, because the ink in the printing grooves 211 below the material mixing roll 22 is in the pressure maintaining state, and the ink in the gravure roll 21 is pushed downward, and the pressing direction of the gravure roll 21 and the ink is pushed downward, so that the ink is driven by the rotating material mixing roll 22 and the gravure roll 21, and the ink is pressed in the direction, and the inner printing direction of the gravure roll 21 is reduced, and the ink is uniformly pressed, and the impression of the ink is pressed, and the inner printing roll 21, and the ink is uniformly pressed by the gravity, and the inner printing roll 21, and the inner printing of the ink is uniformly pressed; by making the direction of the feed opening 24 tangent to the rotation direction of the gravure roll 21, the influence of gravity drop on the ink at the top of the gravure roll 21 and the rolling position of the press roll 2 can be further reduced.

Meanwhile, through the arrangement of the pressure maintaining shell 23, the problems that a large amount of bubbles are generated again in the ink to cause white flowers, sand holes and the like in the printing process of the printed matter 10 due to the fact that the ink circularly enters the ink storage box 4 and brings air in the environment into the ink storage box 4 can be avoided; meanwhile, the problems that the ink on the surface of the gravure printing roller 21 is exposed in the environment, dries and solidifies to cause poor transfer and the diameter of the surface of the gravure printing roller 21 is changed to influence the printing quality can be avoided or reduced.

Further, as shown in fig. 1-2, the pressure maintaining shell 23 is provided with a refining section 25 adjacent to the refining roller 22; the material homogenizing part 25 is attached to the upper part of the material homogenizing roller 22.

The material refining section 25 scrapes the surface of the refining roller 22, so that the upper surface of the gravure roller 21 at the printing position between the gravure roller 21 and the press roller 2 is clean without ink adhesion, and only the printing grooves 211 are filled with ink adhesion, thereby improving the printing effect at the impression position between the gravure roller 21 and the refining roller 22; the roll surface of the gravure roll 21 enclosed by the two refining rolls 22 and the pressing roll 2 is an imprinting area 212, the rest area of the roll surface of the gravure roll 21 is a non-imprinting area 213, and the refining part 25 scrapes materials on the upper surface of the gravure roll 21, so that the problem that the imprinting effect of the imprinting area 212 is influenced by transferring ink at the non-imprinting area 213 to the imprinting area 212 of the gravure roll 21 by the refining roll 22 can be avoided.

Example two

As shown in fig. 1-10, where the same or corresponding parts as in the first embodiment have been given the same reference numerals as in the first embodiment, only the differences from the first embodiment will be described below for the sake of convenience. The second embodiment is different from the first embodiment in that:

as shown in fig. 5 to 6, the end of the feed port 24 is provided with a delivery pipe 26, and the middle of the delivery pipe 26 is provided with the first exhaust assembly 3.

By providing the first air discharging unit 3 in the feed pipe 26, air bubbles in the ink in the feed pipe 26 can be discharged, and the printing quality can be improved.

Further, as shown in fig. 5 to 6, the first exhaust assembly 3 includes:

at least two cutting nets 31;

an air duct 32 which is arranged between the adjacent cutting nets 31 and is higher than the refining roller 22;

an air guide impeller 33 disposed within the delivery tube 26 and extending into the air guide tube 32.

It should be noted that, by providing the cutting net 31 in the conveying pipe 26, the ink flowing through the conveying pipe 26 can be cut and larger bubbles can be blocked, so that the bubbles have a tendency of floating, and the bubbles in the ink flowing through the cutting net 31 can be filtered and guided to the air duct 32, and meanwhile, the rotating air duct impeller 33 can guide out the bubbles in the ink between the two cutting nets 31, thereby increasing the overflow speed and the overflow amount of the bubbles in the ink in the conveying pipe 26, and improving the cleaning effect of the bubbles in the ink.

Further, as shown in fig. 5 to 7, a plurality of air guide impellers 33 are provided, and the plurality of air guide impellers 33 are arranged in a meshing manner near one side;

the air guide impeller 33 includes:

a first impeller 331, the first impeller 331 having a tapered shape with a large lower end and a small upper end;

and a second impeller 332 which is connected with the upper end of the first impeller 331, extends into the air duct 32 and is spirally arranged.

It should be noted that, the first impeller 331 is set to be in a conical shape with a small upper end and a large lower end, which is beneficial to guiding bubbles in the ink upwards and guiding the bubbles into the air duct 32, the first impeller 331 rotates at a low speed driven by the flowing ink, the rotation speed is 5 to 100 revolutions per minute, so as to ensure the stability of the pressure of the ink in the pressure-maintaining shell 23, and the air duct impeller 33 rotates to maintain the liquid level in the air duct 32 at a certain height without continuously rising; the plurality of air guide impellers 33 are meshed to rotate to synchronously rotate to guide bubbles to ascend and overflow, so that the effect of removing the bubbles in the ink is improved; meanwhile, the defoaming agent and the stabilizing agent are added into the ink, and the rotating first impeller 331 is beneficial to mixing the defoaming agent, the stabilizing agent and the ink to reduce bubbles in the ink.

Further, as shown in fig. 5 to 7, two air guide impellers 33 are provided, and the upper end of one air guide impeller 33 is in power connection with a second driving member 333 arranged on the machine frame; concave arc-shaped guide plates 34 are arranged at the two air guide impellers 33, and part of blades of the air guide impellers 33 extend into concave positions of the arc-shaped guide plates 34;

the cutting net 31 is disposed between the two arc-shaped guide plates 34 and is located at the rotation tangency of the first impeller 331.

Further, as shown in fig. 5-7, concave arc-shaped guide plates 34 are disposed at both the first impellers 331, and part of the blades of the first impellers 331 extend into concave positions of the arc-shaped guide plates 34;

it should be noted that, the blades on the adjacent sides of the two air guide impellers 33 are staggered to realize linkage, by arranging the arc-shaped guide plate 34, and positioning part of the blades of the air guide impellers 33 on the concave side of the arc-shaped guide plate 34, and driving the two air guide impellers 33 to rotate by the second driving part 333 which is a motor or a servo motor, on one hand, partial power can be provided for conveying the ink in the conveying pipe 26 to better maintain the stability of the pressure of the ink in the pressure maintaining shell 23, and on the other hand, the rotating first impeller 331 can guide most of the bubbles contained in the ink to the second impeller 332, and then the bubbles are guided and released upwards along the air guide pipe 32 by the second impeller 332, and at this time, because the second driving part 333 which is positioned at the air guide impeller 33 provides power, the air guide pipe 32 is directly communicated with the atmosphere; the cutting net 31 is arranged at the rotating tangent position of the first impeller 331, so that bubbles accumulated at the cutting net 31 are taken away by the first impeller 331 and guided to flow upwards for discharge, and the ink quality and the printing quality are improved.

Further, as shown in fig. 8-10, the other end of the air duct 32 is communicated with the ink tank 4, and a weight-adjustable pressing plate assembly 41 is disposed on the upper portion of the ink tank 4 storing ink.

Furthermore, a sealing plug or a one-way air outlet valve is arranged at the upper end of the air duct 32, and the change of the ink pressure at the air duct 32 is reduced through the arrangement of the sealing plug or the one-way air outlet valve; and opening the sealing plug periodically to discharge the guided bubbles.

It should be noted that by adjusting the weight of the pressure plate assembly 41, stable pressure supply of the ink in the delivery pipe 26 is realized, thereby being beneficial to maintaining the ink pressure on the surface of the gravure roll 21 in the pressure maintaining housing 23 stable.

Further, as shown in fig. 8 to 10, the platen assembly 41 includes:

a floating plate 411 slidably provided at the upper inner side of the ink tank 4;

a storage box 412 disposed at the upper middle part of the floating plate 411;

a dosing delivery assembly 413 extending into the magazine 412.

Further, the upper end of the quantitative conveying component 413 is communicated with a liquid storage tank 414;

it should be noted that, by providing the floating plate 411 in the ink storage box 4, the floating plate 411 floats above the ink liquid level, and the storage box 412 stores liquid or powder with an appropriate weight to adjust the pressure of the floating plate 411 on the ink, and the quantitative conveying assembly 413 automatically draws out or puts liquid into the storage box 412 to adjust the weight of the storage box 412;

further, as shown in fig. 8 to 10, a scale 415 is disposed below the magazine 412, and the scale 415 is disposed in the middle above the floating plate 411, so that the weight of the magazine 412 can be determined by weighing the magazine 412 by the scale 415 disposed below the magazine 412;

further, the quantitative delivery assembly 413 comprises: a delivery pump 4131 capable of forward and reverse delivery, an extension tube 4132 communicated with the delivery pump 4131, an electromagnetic valve arranged at the upper end of the extension tube 4132, a flow meter and a controller, wherein the delivery pump 4131 is a positive displacement pump or a plunger pump capable of forward and reverse delivery; the controller is electrically connected with the flow meter and the electromagnetic valve, the flow meter is used for measuring the fluid flow passing through the extension tube 4132, and the fluid flow passing through the extension tube 4132 is fed back to the controller, so that the controller controls the opening and closing of the electromagnetic valve, and the control of the fluid flow entering and exiting the storage box 412 is realized.

Further, the lower portion of the ink storage box 4 is provided with a feeding pipe 42 and a valve disposed at the feeding pipe 42, the feeding pipe 42 is used for feeding ink into the ink storage box 4, and the feeding pipe 42 is opened or closed through the valve.

Further, as shown in fig. 8-10, a partition plate 43 is provided in the ink storage box 4, a filter 431 is provided at the middle lower part of the partition plate 43, and a gap is provided between the partition plate 43 and the bottom of the ink storage box 4; the bottom of the ink storage box 4 at the gap is provided with a waterproof floating rope 432, and the waterproof floating rope 432 is positioned on one side of the partition plate 43 far away from the feeding pipe 42.

It should be noted that, by arranging the partition 43 and the filter net 431 at the middle lower part of the partition 43, bubbles existing in the ink storage box 4 can be blocked, and the bubbles entering the delivery pipe 26 can be reduced, and because the amount of the bubbles existing at the bottom of the ink storage box 4 is small, the ink at the bottom of the ink storage box 4 preferentially enters the delivery pipe 26 by the arrangement of the partition 43, the amount of the bubbles reaching the ink in the pressure-maintaining shell 23 can be greatly reduced, and the printing effect can be improved;

because the ink will pass through the gap between the partition 43 and the bottom of the ink storage box 4 when entering the delivery pipe 26, the flowing ink will make the waterproof floating rope 432 shake to a certain extent, so that the waterproof floating rope 432 guides the bubbles gathered at the partition 43 upwards to avoid or reduce the bubbles entering the gap between the partition 43 and the bottom of the ink storage box 4, thereby improving the removal effect of the bubbles in the ink.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The utility model provides a wine box is gravure printing device for packing which characterized in that includes:

a first frame;

pressing rollers;

a gravure roll having a printing groove formed on a surface thereof;

and the refining rollers are provided with two refining rollers close to the pressing part of the gravure printing roller and the pressing roller and are used for pushing up the ink falling in the printing groove, and the two refining rollers are respectively tangent to two sides of the gravure printing roller.

2. The intaglio printing device for wine box packaging according to claim 1, characterized in that: a pressure maintaining shell is arranged on the outer side of the gravure printing roller;

the pressure maintaining shell is provided with a feed inlet communicated with the pressure maintaining shell along the rotation direction of the gravure printing roller.

3. The intaglio printing device for wine box packaging according to claim 2, characterized in that: a refining part is arranged at the part, close to the refining roller, of the pressure maintaining shell; the material homogenizing part is attached to the upper part of the material homogenizing roller.

4. The intaglio printing device for wine box packaging according to claim 3, characterized in that: the tip of feed inlet is provided with the conveyer pipe, the conveyer pipe middle part is provided with first exhaust subassembly.

5. The intaglio printing device for wine box packaging according to claim 4, characterized in that: the first exhaust assembly includes:

at least two cutting webs;

the air guide pipe is arranged between the adjacent cutting nets and is higher than the refining roller;

and the air guide impeller is arranged in the conveying pipe and extends into the air guide pipe.

6. The intaglio printing device for wine box packaging as claimed in claim 5, wherein: the air guide impellers are arranged in a plurality, and one sides of the air guide impellers which are close to each other are arranged in a meshed manner;

the air guide impeller includes:

a first impeller in a tapered shape having a large lower end and a small upper end;

and the second impeller is connected with the upper end of the first impeller, extends into the air duct and is spirally arranged.

7. The intaglio printing device for wine box packaging as claimed in claim 6, wherein: the upper end of one air guide impeller is in power connection with a second driving piece arranged on the rack; concave arc-shaped guide plates are arranged at the two air guide impellers, and part of blades of the air guide impellers extend into the concave positions of the arc-shaped guide plates;

the cutting net is arranged between the two arc-shaped guide plates and is positioned at the rotating tangent position of the first impeller.

8. The intaglio printing device for wine box packaging according to any one of claims 5 to 7, wherein: the other end of the air duct is communicated with an ink storage box, and a weight-adjustable pressing plate assembly is arranged at the upper part of the ink storage box for storing ink.

9. The intaglio printing device for wine box packaging as claimed in claim 8, wherein: the platen assembly includes:

a floating plate which is arranged at the upper part of the inner side of the ink storage box in a sliding way;

the storage box is arranged in the middle of the upper part of the floating plate;

and the quantitative conveying assembly extends into the storage box.

10. The intaglio printing device for wine box packaging as claimed in claim 9, wherein: a partition plate is arranged in the ink storage box, a filter screen is arranged at the middle lower part of the partition plate, and a gap is formed between the partition plate and the bottom of the ink storage box; the bottom of the ink storage box, which is positioned at the gap, is provided with a waterproof floating rope, and the waterproof floating rope is positioned on one side, away from the feeding pipe, of the partition plate.

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