CN220639277U - Ink jet printing device - Google Patents

Abstract

The utility model relates to an ink-jet printing device, which comprises a conveying platform, a printing trolley and an optical detection device, wherein the conveying platform is arranged at the upper end of a base and is used for bearing and conveying printing media; the printing trolley and the optical detection device are arranged on the base and are positioned above the conveying platform, the optical detection device is arranged above the right end part of the conveying platform and longitudinally spans the conveying platform front and back, the printing trolley is arranged on the left side of the optical detection device and can move front and back relative to the conveying platform, the conveying platform comprises a driving device and a plurality of conveying devices which are arranged at intervals front and back in parallel, and the driving device drives the conveying devices to do rotary motion so as to convey printing media from right to left. The utility model can be embedded into a production line for printing automobile glass, integrates optical detection and ink-jet printing, realizes automatic printing of variable data on a glass plate, and lays a good foundation for the application of the ink-jet printing technology in the automobile glass printing industry.

Description

Ink jet printing device

Technical Field

The utility model relates to the technical field of ink-jet printing equipment, in particular to an ink-jet printing device.

Background

The automobile glass is visible everywhere in life, and can be generally divided into front windshield glass, rear windshield glass, door glass, triangular window glass and skylight glass, and from the aspect of manufacturing technology, the automobile glass processing is mainly divided into three steps of cutting large sheets, cutting, grinding, washing, baking and printing, wherein in the printing step, the printed objects mainly comprise three steps: black border, heater wire and trademark. Traditional automobile glass printing adopts a screen printing mode, namely, glass screen printing is performed on glass products by using a screen printing plate and glass glaze. The glass glaze is also called glass ink, and is a pasty printing material formed by mixing coloring materials and binder, wherein the coloring materials comprise inorganic pigment and low-melting-point fluxing agent (lead glass powder), and the binder is commonly called as plate benefiting oil in the glass screen printing industry. The printed glass product is fired in a furnace at 520-600 ℃ to form patterns by consolidating the glaze printed on the surface of the glass.

However, the glass screen printing process is easy to have quality problems such as plate pasting, pinhole phenomenon, bubble in ink, outward expansion of printing size, spot shape in image-text part and dark tone part, and the like. The reasons for these problems are mostly due to the influence of the printing environment, the specificity of the glass ink and the defects of some uses of the screen printing plate itself, for example, the glass surface is not treated cleanly, dirt such as watermarks, fingerprints, mimeographies, dust particles and the like can cause the paste plate, the volatilization solvent in the glass ink is volatilized quickly due to the excessively high temperature and the relatively low humidity of a workshop, or the fluidity of the glass ink is deteriorated due to the excessively low temperature of the workshop, the viscosity of the ink is increased, the meshes of the screen printing plate are blocked, or the coloring material in the glass ink is separated from the solvent, precipitation is generated, and the meshes of the screen printing plate are blocked, so that the printing quality is affected. In addition, with the advent of the information age, the production of automobile glass is also continuously adapted to the needs of the age, for example, the corner mark of the front windshield will gradually evolve into two-dimension codes representing the identity of each automobile, the two-dimension codes can trace back the country of production, manufacturing company or manufacturer (looking up price, reference, preferential policy), automobile model, brand name, automobile series, automobile body form, engine model, automobile model, safety protection device model, inspection number, assembly factory name, factory number and the like of the automobile, and the information including the engine, transmission, braking system and the like configured by the automobile manufacturer can be scanned and read, so the printing of the automobile corner mark is approaching to personalized customization, and the traditional screen printing cannot be adapted to the personalized needs due to the limitation of plate making.

Therefore, the mode of printing marks, black edges, heating wires and the like on the automobile glass by adopting a variable data ink-jet printing technology through an ink-jet printer is generated, so that the personalized customization requirement of the automobile glass is met. When the printing is performed by the ink-jet printer, compared with the traditional printing media such as paper, cloth, wood board and the like, the automobile glass is used as the printing media, and the quality of finished products of glass printing is influenced by detecting whether the glass media have flaws or are stained with dust or not through the optical detection device, and the information such as the conveying position, the edge position, the inclination or the like of the glass media is also detected; and then printing by a printing device, and finally, detecting whether the printing quality is qualified or not by a quality detection device, for example, whether the two-dimensional code can be identified or not, and the like.

Based on the functional requirement of printing the automobile glass by adopting the variable data ink-jet printing technology through the ink-jet printer, the utility model provides the printing device which can realize the printing of the variable corner marks of the automobile glass and can realize good printing quality.

Disclosure of Invention

The utility model aims to provide an ink-jet printing device which solves the defects in the prior art, and the technical problems to be solved by the utility model are realized by the following technical scheme.

The inkjet printing device comprises a conveying platform, a printing trolley and an optical detection device, wherein the conveying platform is arranged at the upper end of a base and is used for bearing and conveying printing media; the printing trolley and the optical detection device are arranged on the base and are positioned above the conveying platform, the optical detection device is arranged above the right end part of the conveying platform and longitudinally spans the conveying platform from front to back, the printing trolley is arranged on the left side of the optical detection device and can move back and forth relative to the conveying platform, the conveying platform comprises a driving device and a plurality of conveying devices which are arranged in parallel at intervals from front to back, and the driving device drives the conveying devices to do rotary motion so as to convey printing media from right to left.

Preferably, the optical detection device comprises a transmitting end located below the printing medium and a detecting end located above the printing medium, the conveying device comprises a first conveying part and a second conveying part located on the left side of the first conveying part, the transmitting end of the optical detection device is located between the first conveying part and the second conveying part, the first conveying part and the second conveying part are respectively connected with a driving device, and the driving device respectively drives the first conveying part and the second conveying part to do synchronous rotary motion.

Preferably, the first conveying part comprises a supporting beam I, a main transmission part, side edge parts and a synchronous belt I, wherein the main transmission part is arranged at the position, close to the middle, below the supporting beam I, the number of the side edge parts is two, the side edge parts are symmetrically arranged at the left end and the right end of the supporting beam I, the height of the side edge parts is slightly higher than the upper surface of the supporting beam I, the main transmission part comprises a driving pulley, a driving device is connected with the driving pulley and used for driving the driving pulley to rotate, idler pulleys and tensioning pulleys are respectively arranged at the left side and the right side of the driving pulley, the synchronous belt I is wound on the periphery of the supporting beam I through the driving pulley, the idler pulleys and the tensioning pulleys, the driving pulley is used for driving the synchronous belt I to rotate, the idler pulleys are used for guiding and tensioning the synchronous belt I, and the tensioning pulleys are used for adjusting the tightness of the synchronous belt I.

Preferably, the main transmission part comprises mounting plates I fixedly mounted on the front side and the rear side of the supporting beam I respectively, the mounting plates I are used for mounting a driving pulley, an idler pulley and a tensioning pulley of the main transmission part, and the height of the tensioning pulley is adjustable relative to the height of the driving pulley.

Preferably, the second conveying part comprises a supporting beam II, a main transmission part, side parts, a first avoiding part and a synchronous belt II, wherein the main transmission part is arranged below the supporting beam II, the number of the side parts is two and symmetrically arranged at the left end and the right end of the supporting beam II, the height of the side parts is slightly higher than that of the upper surface of the supporting beam II, an ink receiving groove is formed in the lower part of the printing trolley on the conveying platform, the length of the ink receiving groove is matched with the width of the conveying platform, the first avoiding part is arranged at the left side of the main transmission part and is positioned below the printing trolley, the first avoiding part is used for avoiding the ink receiving groove, the upper end of the first avoiding part is flush with the upper end of the side parts and the lower end of the side parts, the first avoiding part comprises a plurality of idler pulleys, the synchronous belt II is connected with the idler pulleys in a winding mode, and the idler pulleys of the second conveying part are arranged at the periphery of the idler pulleys in a winding mode, and the idler pulleys are used for carrying out synchronous belt II.

Preferably, the first avoiding part comprises mounting plates III which are respectively and fixedly mounted on the front side and the rear side of the supporting beam II, the mounting plates III are used for mounting idler wheels of the first avoiding part, the number of the idler wheels of the first avoiding part is five, four idler wheels are used for guiding and tensioning the position of the synchronous belt II, which is located above the supporting beam II, and the other idler wheels are used for tensioning the position of the synchronous belt II, which is located below the supporting beam II.

Preferably, the base is further provided with a quality detection device, the quality detection device is arranged on the left side of the printing trolley and longitudinally spans the conveying platform, the first conveying part further comprises a second avoiding part, the second avoiding part is arranged below the quality detection device and used for avoiding the detection position of the quality detection device, the second avoiding part comprises a plurality of idler wheels, the idler wheels are used for guiding and tensioning the position of the synchronous belt II, which is positioned above the supporting beam II, and the upper end of the second avoiding part is flush with the upper end of the side edge part.

Preferably, the driving device comprises a motor, an output end of the motor is fixedly connected with a main transmission shaft, the main transmission shaft penetrates through the driving belt pulley and is fixedly connected with the driving belt pulley, and an encoder is arranged at the end part of the main transmission shaft.

Preferably, the conveying device is fixedly mounted on the base through fixing devices, the height of the fixing devices is adjustable, and the fixing devices are multiple in number and are arranged at left and right intervals.

Preferably, the base comprises a plurality of longitudinally arranged installation racks which are spaced left and right, the upper ends of the installation racks are fixedly provided with installation plates, and the lower ends of the fixing devices are fixedly connected with the installation plates.

When the device works, a printing medium moves onto a conveying platform from the last station, a driving device drives each conveying device arranged at intervals front and back to perform rotary motion, so that the printing medium is conveyed from right to left; the optical detection device also detects and records information such as the edge position of the glass plate, whether the edge is inclined or not and the like, and feeds the information back to the printing system, so that the position and the direction of the pattern sprayed by the printing nozzle are adjusted, and the printed pattern is positioned at a proper position on the glass plate; the optical detection device also records the time when the glass plate enters the optical detection area, and calculates the time when the glass plate enters the printing area by matching with the speed of the rotary motion of the conveying device, so as to determine the starting time of printing. After the glass plate is conveyed to the lower part of the printing trolley from right to left, a printing nozzle on the printing trolley starts to print, and after the printing is finished, the glass plate continues to move to the next station.

The ink-jet printing device provided by the utility model can be embedded into a production line for printing automobile glass, integrates optical detection and ink-jet printing, realizes automatic printing of variable data on a glass plate, and lays a good foundation for application of an ink-jet printing technology in the automobile glass printing industry.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the mounting of the conveyor on the base of the present utility model;

FIG. 3 is a schematic side view of a conveyor of the present utility model;

FIG. 4 is a schematic diagram of a first conveying section according to the present utility model;

FIG. 5 is a schematic diagram of a second conveying section according to the present utility model;

the reference numerals in the drawings are in turn: 1. the device comprises a base, 11, a mounting plate, 2, a conveying platform, 21, a conveying device, 211, a main transmission part, 212, a side edge part, 213, a first avoiding part, 214, a second avoiding part, 22, a driving device, 23, a fixing device, 231, a fixing seat, 232, an adjusting block, 233, an adjusting nail, 3, a printing trolley, 31, an ink receiving groove, 4, an optical detection device, 5 and a quality detection device.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

In the present utility model, the front, rear, left and right directions refer to the directions shown in fig. 1, the left side in fig. 1 is the left side, the right side in fig. 1 is the right side, the front side in fig. 1 is the front side, and the rear side is not shown in fig. 1.

Example 1:

in an inkjet printing apparatus, the improvement comprising: the printing device comprises a conveying platform 2, a printing trolley 3 and an optical detection device 4, wherein the conveying platform 2 is arranged at the upper end of a base 1 and is used for bearing and conveying printing media; the printing trolley 3 and the optical detection device 4 are arranged on the base 1 and are located above the conveying platform 2, the optical detection device 4 is arranged above the right end part of the conveying platform 2 and longitudinally spans the conveying platform 2 front and back, the printing trolley 3 is arranged on the left side of the optical detection device 4 and can move front and back relative to the conveying platform 2, the conveying platform 2 comprises a driving device 22 and a plurality of conveying devices 21 which are arranged at intervals in parallel front and back, and the driving device 22 drives the conveying devices 21 to do rotary motion so as to convey printing media from right to left.

Referring to fig. 1 and 2, a conveying platform 2 is arranged at the upper end of a base 1, a printing medium is arranged on the conveying platform 2, a guide rail beam which is longitudinally arranged is erected on the base 1, a printing trolley 3 is arranged on the guide rail beam and can move back and forth along the guide rail beam, a printing spray head is arranged on the printing trolley 3, the printing conveying platform 2 for spraying ink drops on the printing medium to finish patterns comprises a plurality of conveying devices 21 which are transversely arranged and are arranged at intervals back and forth, the lengths of the conveying devices 21 are mutually matched with the lengths of the base 1, a spacing plate is arranged between every two adjacent conveying devices 21, the upper surface of the spacing plate is slightly lower than the upper surface of the transmission device 21, and the spacing plate is arranged so as to block a gap between the conveying devices 21, prevent sundries from falling into the base 1 to influence the work of a driving device 22 and improve the safety and reliability; on the other hand, plays a certain beautiful role.

When the device works, a printing medium moves onto the conveying platform 2 from the previous station, the driving device 21 drives each conveying device 21 which is arranged at intervals back and forth to perform rotary motion, so that the printing medium is conveyed from right to left, the printing medium is a glass plate, the glass plate firstly passes through the lower part of the optical detection device 4, the optical detection device 4 detects whether bubbles are contained in the glass plate, whether impurities affecting printing exist on the surface of the glass plate or not, and if the glass plate has the defects which cause the glass plate to be inconsistent with requirements, a worker is informed of replacing the glass plate or cleaning the glass plate in time; the optical detection device 4 also detects and records information such as the edge position of the glass plate, whether the edge is inclined or not, and the like, and feeds the information back to the printing system, so that the position and the direction of the pattern sprayed by the printing nozzle are adjusted, and the printed pattern is positioned at a proper position on the glass plate; the optical detection device 4 also records the time when the glass plate enters the optical detection area, and calculates the time when the glass plate enters the printing area by matching with the speed of the rotary motion of the conveying device 21, so as to determine the printing start time. After the glass plate is conveyed to the lower part of the printing trolley 3 from right to left, the printing nozzle on the printing trolley 3 starts to print, and after the printing is finished, the glass plate continues to move to the next station.

The ink-jet printing device provided by the embodiment can be embedded into a production line for printing automobile glass, integrates optical detection and ink-jet printing, realizes automatic printing of variable data on a glass plate, and lays a good foundation for application of an ink-jet printing technology in the automobile glass printing industry.

Further, the conveying device 21 is fixedly mounted on the base 1 through fixing devices 23, the height of the fixing devices 23 is adjustable, and the number of the fixing devices 23 is multiple and is arranged at left and right intervals.

Further, the fixing device 23 includes a fixing seat 231 and an adjusting block 232, the lower end of the fixing seat 231 is fixedly connected with the base 1, the upper end of the fixing seat 231 is fixedly connected with the conveying device 21, the adjusting block 232 is disposed above the fixing seat 231 and is fixedly mounted on the conveying device 21, an adjusting nail 233 is disposed on the adjusting block 232 in a penetrating manner, the lower end of the adjusting nail 233 is abutted to the fixing seat 231, and the adjusting nail 233 is adjusted to extend out of the length of the lower end face of the adjusting block 232 by screwing the adjusting nail 233 so as to adjust the distance between the adjusting block 232 and the fixing seat 231, thereby adjusting the height of the fixing device 23, and further adjusting the height of the driving device 21 relative to the base 1.

Further, the base 1 comprises a plurality of longitudinally arranged installation frames which are spaced left and right, the upper ends of the installation frames are fixedly provided with installation plates 11, and the lower ends of the fixing devices 23 are fixedly connected with the installation plates 11.

In this embodiment, the mounting plate 11 is a machined part, the mounting plate 11 is used as a positioning reference, the conveying device 21 is mounted on the mounting plate 11 through the fixing device 23 so as to be fixed on the base 1, the height of the fixing device 23 is adjustable, and the height of the conveying device 21 can be finely adjusted by adjusting the height of the fixing device 23, so that the upper end face of the conveying device is kept horizontal, the printed pattern deflection or the resolution is prevented from being inconsistent, and the printing quality is improved.

Example 2:

on the basis of embodiment 1, the optical detection device 4 includes an emitting end located below the printing medium and a detecting end located above the printing medium, the conveying device 21 includes a first conveying portion and a second conveying portion located on the left side of the first conveying portion, the emitting end of the optical detection device 4 is located between the first conveying portion and the second conveying portion, the first conveying portion and the second conveying portion are respectively connected with a driving device, and the driving device respectively drives the first conveying portion and the second conveying portion to perform synchronous rotation motion.

In this embodiment, referring to fig. 1 and 3, the glass plate has light transmittance, the transmitting end of the optical detection device 4 transmits other photoelectric signals such as light source in the lower direction of the glass plate, and whether there are defects such as bubbles and impurities on the glass plate is determined according to the photoelectric information received by the detecting end.

Further, the first conveying part comprises a supporting beam I, a main transmission part 211, side edge parts 212 and a synchronous belt I, the main transmission part is arranged at a position, close to the middle, below the supporting beam I, the number of the side edge parts 212 is two, the side edge parts 212 are symmetrically arranged at the left end and the right end of the supporting beam I, the height of the side edge parts 212 is slightly higher than the upper surface of the supporting beam I, the main transmission part 211 comprises a driving pulley, a driving device 22 is connected with the driving pulley and is used for driving the driving pulley to rotate, idler pulleys and tensioning pulleys are respectively arranged at the left side and the right side of the driving pulley, the side edge parts 212 comprise a plurality of idler pulleys, the synchronous belt I is wound on the periphery of the supporting beam I through the driving pulley, the idler pulleys are used for driving the synchronous belt I to rotate, the idler pulleys are used for guiding and tensioning the synchronous belt I, and the tensioning pulleys are used for adjusting the tightness of the synchronous belt I.

Further, a guide strip I is arranged at the upper end of the support beam I, a groove is formed in the upper end face of the guide strip I, the width of the groove is matched with that of the synchronous belt I, and the guide strip I is used for guiding movement of the synchronous belt I.

Further, the supporting beam I is an aluminum profile.

Further, the main transmission part 211 includes mounting plates I fixedly mounted on the front and rear sides of the support beam I, the mounting plates I are used for mounting a driving pulley, an idler pulley and a tensioning pulley of the main transmission part 211, and the height of the tensioning pulley is adjustable relative to the height of the driving pulley.

Further, be equipped with the installation piece on the mounting panel I, wear to be equipped with the regulation nail in the installation piece, the epaxial be equipped with of tensioning band pulley with the screw hole that the regulation nail matees each other, thereby the lower extreme of regulation nail with the screw hole is mutually supported and is connected, thereby adjusts its lower extreme through screwing the regulation nail and stretches into the length of screw hole to adjust the distance between installation piece and the tensioning band pulley, thereby tensioning or lax hold-in range I.

Further, the driving device 22 includes a motor, an output end of the motor is fixedly connected with a main transmission shaft, the main transmission shaft is inserted into the driving pulley and is fixedly connected with the driving pulley, and an encoder is arranged at an end of the main transmission shaft. The arrangement of the encoder ensures that the first conveying part and the second conveying part keep synchronous operation, so that the conveying of the printing medium is smoother and smoother.

Further, the side portion 212 includes mounting plates II fixedly mounted on the front and rear sides of the support beam I, the mounting plates II are used for mounting idler wheels of the side portion 212, the number of idler wheels of the side portion 212 is two, one idler wheel is disposed outside the end portion of the support beam I and slightly higher than the upper surface of the support beam I, and the other idler wheel is disposed below the end portion of the support beam I.

In this embodiment, the first conveying portion is located on the right side of the optical detection device 4, and referring to fig. 1 to 4, the motor rotates counterclockwise to drive the transmission shaft to rotate counterclockwise, so as to drive the driving pulley to rotate counterclockwise, the driving pulley drives the idle pulley and the tensioning pulley to rotate counterclockwise through the synchronous belt I, and the synchronous belt I also rotates counterclockwise, so that the glass plate placed above the synchronous belt I is conveyed from right to left.

Further, the second conveying part comprises a supporting beam II, a main transmission part 211, side edge parts 212, a first avoiding part 213 and a synchronous belt II, wherein the main transmission part 211 is arranged below the supporting beam II, the number of the side edge parts 212 is two and symmetrically arranged at the left end and the right end of the supporting beam II, the height of the side edge parts 212 is slightly higher than that of the upper surface of the supporting beam II, an ink receiving groove 31 is arranged below the printing trolley 3 on the conveying platform 2, the length of the ink receiving groove 31 is matched with the width of the conveying platform 2, the first avoiding part 213 is arranged at the left side of the main transmission part and is positioned below the printing trolley 3, the first avoiding part is used for avoiding the ink receiving groove 31, the upper end of the first avoiding part 213 is flush with the upper end of the side edge parts 212, the lower end of the side edge parts 212 is lower than that of the side edge parts 212, the first avoiding part 213 comprises a plurality of idler wheels, the synchronous belt II is connected with the driving pulley, the idler wheel and the idler wheel is wound around the idler wheel, and the idler wheel is connected with the driving pulley and the idler wheel by the idler wheel, and the idler wheel is arranged on the periphery of the driving pulley and the idler wheel.

In this embodiment, when the printing nozzle on the print carriage 3 is dredged by pressing ink, no printing medium is disposed above the conveying platform 2, and the ink droplets ejected from the printing nozzle directly fall onto the conveying platform 2 to pollute the conveying platform 2, so that the printing medium is polluted when the printing medium is conveyed again later, therefore, an ink receiving slot 31 is required to be disposed below the print carriage 3 for receiving the ink droplets. The carriage 3 can move back and forth along the guide rail beam to print at a proper position, and the width of the ink receiving groove 31 longitudinally spans the conveying platform 2, so that the ink receiving groove 31 can receive ink when the carriage 3 ejects ink at any position. Therefore, the second conveying portion is provided with a first avoiding portion at a position of the ink receiving groove 31 to avoid the position of the ink receiving groove 31.

Further, the first avoiding portion comprises mounting plates III which are respectively and fixedly mounted on the front side and the rear side of the supporting beam II, the mounting plates III are used for mounting idler wheels of the first avoiding portion, the number of the idler wheels of the first avoiding portion is five, four idler wheels are used for guiding and tensioning the position, above the supporting beam II, of the synchronous belt II, and the other idler wheel is used for tensioning the position, below the supporting beam II, of the synchronous belt II.

Further, two of the idler wheels are arranged at equal intervals in the left-right direction and have a height slightly higher than the upper surface of the support beam II, the other two idler wheels are arranged below the two idler wheels, and the fifth idler wheel is arranged below the four idler wheels and is positioned in the middle of the two idler wheels arranged at intervals in the left-right direction.

Furthermore, the support beam II is an aluminum profile, and the support beam II is provided with an empty slot at the first avoidance part, or the support beam II is interrupted for a set distance at the first avoidance part.

In this embodiment, the motor rotates anticlockwise to drive the main drive shaft to rotate anticlockwise to drive the driving pulley to rotate anticlockwise, the driving pulley drives idler and take-up pulley through hold-in range II and rotates anticlockwise, hold-in range II also rotates anticlockwise, thereby will arrange in the glass board of hold-in range II top and carry from right to left.

Further, the supporting beam II is an aluminum profile.

Example 3:

on the basis of embodiment 2, still install quality detection device 5 on the base 1, quality detection device 5 locates the left side of print dolly 3 and fore-and-aft is indulged stride transport platform 2, first conveying portion still includes second dodge portion 214, second dodge portion 214 locates the below of quality detection device 5 is used for right quality detection device 5's detection position dodges, second dodge portion 214 includes a plurality of idler, the idler is used for being located hold-in range II the position of supporting beam II top is led and is strained, the upper end that the portion 214 was dodged to the second with the upper end parallel and level of side portion 212.

In this embodiment, the quality detecting device 5 is configured to detect whether the printed pattern is qualified, when the quality detecting device 5 detects the printed pattern, it is required to keep a certain transmittance below the glass plate, that is, it is required to make the printed pattern have an obvious distinction from the transmittance of other glass areas, so as to extract, identify and detect the printed pattern, and therefore, the conveying device below the printing medium at the quality detecting device 5 needs to be spaced from the printing medium by a certain distance, that is, an empty slot needs to be provided, and therefore, a second avoiding portion is provided, and as shown in fig. 5, the synchronous belt II is bent downward at the second avoiding portion, so as to be spaced from the printing medium by a certain distance.

Further, the second avoidance portion 214 includes mounting plates IV respectively fixedly mounted on the front side and the rear side of the support beam II, the mounting plates IV are used for mounting idler wheels of the second avoidance portion 214, the number of the idler wheels of the second avoidance portion 214 is three, wherein two idler wheels are arranged at equal intervals left and right and have a height slightly higher than the upper surface of the support beam II, and the other idler wheel is arranged at a position below the middle of the two idler wheels.

It should be noted that the foregoing detailed description is exemplary and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly indicates otherwise. Furthermore, it will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components, and/or groups thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or otherwise described herein.

Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways, such as rotated 90 degrees or at other orientations, and the spatially relative descriptors used herein interpreted accordingly.

In the above detailed description, reference is made to the accompanying drawings, which form a part hereof. In the drawings, like numerals typically identify like components unless context indicates otherwise. The illustrated embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented herein.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. An inkjet printing apparatus, characterized in that: the printing device comprises a conveying platform (2), a printing trolley (3) and an optical detection device (4), wherein the conveying platform (2) is arranged at the upper end of a base (1) and is used for bearing and conveying printing media; the printing trolley (3) and the optical detection device (4) are arranged on the base (1) and are located above the conveying platform (2), the optical detection device (4) is arranged above the right end part of the conveying platform (2) and longitudinally spans the conveying platform (2) front and back, the printing trolley (3) is arranged on the left side of the optical detection device (4) and can move back and forth relative to the conveying platform (2), the conveying platform (2) comprises a driving device (22) and a plurality of conveying devices (21) which are arranged at intervals in a front-back parallel mode, and the driving device (22) drives the conveying devices (21) to do rotary motion so as to convey printing media from right to left.

2. An ink jet printing apparatus as claimed in claim 1, wherein: the optical detection device (4) comprises a transmitting end positioned below the printing medium and a detection end positioned above the printing medium, the conveying device (21) comprises a first conveying part and a second conveying part positioned on the left side of the first conveying part, the transmitting end of the optical detection device (4) is positioned between the first conveying part and the second conveying part, the first conveying part and the second conveying part are respectively connected with a driving device, and the driving device respectively drives the first conveying part and the second conveying part to do synchronous rotary motion.

3. An ink jet printing apparatus as claimed in claim 2, wherein: the first conveying part comprises a supporting beam I, a main transmission part (211), side edge parts (212) and a synchronous belt I, wherein the main transmission part is arranged at the position, close to the middle, of the supporting beam I, the side edge parts (212) are two in number and symmetrically arranged at the left end and the right end of the supporting beam I, the height of each side edge part (212) is slightly higher than that of the upper surface of the supporting beam I, the main transmission part (211) comprises a driving belt wheel, a driving device (22) is connected with the driving belt wheel and used for driving the driving belt wheel to rotate, idler wheels and tensioning belt wheels are respectively arranged at the left side and the right side of the driving belt wheel, each side edge part (212) comprises a plurality of idler wheels, each synchronous belt I is wound on the periphery of the supporting beam I through the driving belt wheel, each idler wheel and each tensioning belt wheel is used for driving the synchronous belt I to rotate, and each idler wheel is used for guiding and tensioning the synchronous belt I and is used for adjusting tightness of the synchronous belt I.

4. An ink jet printing apparatus as claimed in claim 3, wherein: the main transmission part (211) comprises mounting plates I which are respectively and fixedly mounted on the front side and the rear side of the supporting beam I, the mounting plates I are used for mounting a driving pulley, an idler pulley and a tensioning pulley of the main transmission part (211), and the height of the tensioning pulley is adjustable relative to the height of the driving pulley.

5. An ink jet printing apparatus as claimed in claim 3, wherein: the second conveying part comprises a supporting beam II, a main transmission part (211), side edge parts (212), a first avoiding part (213) and a synchronous belt II, wherein the main transmission part (211) is arranged below the supporting beam II, the number of the side edge parts (212) is two and symmetrically arranged at the left end and the right end of the supporting beam II, the height of the side edge parts (212) is slightly higher than that of the upper surface of the supporting beam II, an ink receiving groove (31) is formed in the conveying platform (2) and is positioned below the printing trolley (3), the length of the ink receiving groove (31) is matched with the width of the conveying platform (2), the first avoiding part (213) is arranged at the left side of the main transmission part and is positioned below the printing trolley (3), the first avoiding part is used for avoiding the ink receiving groove (31), the upper end and the lower end of the side edge parts (212) are slightly higher than that of the side edge parts (212), the upper end and the lower end of the side edge parts (212) are lower than that of the idler are flush with each other, and the idler is arranged at the periphery of the idler pulley II, and the idler pulley is connected with the idler pulley II, and the idler pulley is arranged at the periphery of the idler pulley II.

6. An ink jet printing apparatus as claimed in claim 5 wherein: the first avoiding part comprises mounting plates III which are respectively fixedly mounted on the front side and the rear side of the supporting beam II, the mounting plates III are used for mounting idler wheels of the first avoiding part, the number of the idler wheels of the first avoiding part is five, four idler wheels are used for guiding and tensioning the part of the synchronous belt II, which is positioned above the supporting beam II, and the other idler wheel is used for tensioning the part of the synchronous belt II, which is positioned below the supporting beam II.

7. An ink jet printing apparatus as claimed in claim 3, wherein: the device is characterized in that a quality detection device (5) is further installed on the base (1), the quality detection device (5) is arranged on the left side of the printing trolley (3) and longitudinally spans the conveying platform (2), the first conveying part further comprises a second avoiding part (214), the second avoiding part (214) is arranged below the quality detection device (5) and used for avoiding the detection position of the quality detection device (5), the second avoiding part (214) comprises a plurality of idle wheels, the idle wheels are used for guiding and tensioning the part, above the supporting beam II, of the synchronous belt II, and the upper end of the second avoiding part (214) is flush with the upper end of the side edge part (212).

8. An ink jet printing apparatus as claimed in claim 3, wherein: the driving device (22) comprises a motor, the output end of the motor is fixedly connected with a main transmission shaft, the main transmission shaft penetrates through the driving belt wheel and is fixedly connected with the driving belt wheel, and an encoder is arranged at the end part of the main transmission shaft.

9. An ink jet printing apparatus as claimed in claim 1, wherein: the conveying device (21) is fixedly mounted on the base (1) through fixing devices (23), the height of the fixing devices (23) is adjustable, and the number of the fixing devices (23) is multiple and is arranged at left and right intervals.

10. An ink jet printing apparatus as claimed in claim 9 wherein: the base (1) comprises a plurality of longitudinally arranged installation racks which are spaced left and right, the upper ends of the installation racks are fixedly provided with installation plates (11), and the lower ends of the fixing devices (23) are fixedly connected with the installation plates (11).