CN117485029A - Printing device for strip-shaped medium - Google Patents

Printing device for strip-shaped medium Download PDF

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Publication number
CN117485029A
CN117485029A CN202311717968.1A CN202311717968A CN117485029A CN 117485029 A CN117485029 A CN 117485029A CN 202311717968 A CN202311717968 A CN 202311717968A CN 117485029 A CN117485029 A CN 117485029A
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CN
China
Prior art keywords
printing
belt
conveying
tensioning
belt pulley
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311717968.1A
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Chinese (zh)
Inventor
汤振华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Kingtau Machinery & Electronics Equipment Co ltd
Original Assignee
Guangzhou Kingtau Machinery & Electronics Equipment Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou Kingtau Machinery & Electronics Equipment Co ltd filed Critical Guangzhou Kingtau Machinery & Electronics Equipment Co ltd
Priority to CN202311717968.1A priority Critical patent/CN117485029A/en
Publication of CN117485029A publication Critical patent/CN117485029A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/007—Conveyor belts or like feeding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0095—Detecting means for copy material, e.g. for detecting or sensing presence of copy material or its leading or trailing end
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/54—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed with two or more sets of type or printing elements
    • B41J3/543—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed with two or more sets of type or printing elements with multiple inkjet print heads

Abstract

The present application relates to a printing apparatus for a strip-shaped medium. The printing device for a strip-shaped medium described in the application comprises: the printing device comprises a supporting mechanism, a belt conveying mechanism, a printing platform, a first tensioning mechanism, a second tensioning mechanism and a printing mechanism; the belt conveying mechanism is arranged on the supporting mechanism; the printing platform is arranged on the supporting mechanism and is connected with the belt conveying mechanism; the printing mechanism is arranged on the supporting mechanism and is arranged above the printing platform; the first tensioning mechanism and the second tensioning mechanism are respectively arranged on the supporting mechanism and are respectively arranged at two ends of the belt conveying mechanism; the section shape of the upper surface of the printing platform is arc-shaped with the middle high and the two low ends. The printing device for the strip-shaped medium has the advantage of printing with higher precision and high efficiency.

Description

Printing device for strip-shaped medium
Technical Field
The present application relates to the field of printing technology, and in particular to a printing device for a strip-shaped medium.
Background
Inkjet printing (Inkjet printing) is a non-contact micron-scale printing process that can be accomplished by direct ejection of a nano-sized solution onto a flexible or rigid substrate. Inkjet printing processes are considered to be a very potential printing process because they can directly form patterned films without the need for a reticle. Inkjet printing devices typically include an ink cartridge and an inkjet head capable of precisely depositing a solution in a design area. Since inkjet printing is a non-contact deposition technique that precisely controls the volume and location of solution deposition, is easy to pattern, has high material utilization and is pollution-free, it is considered to be the most commercially viable technique in the field of low-cost and high-yield printed electronics.
In general, inkjet printing can be classified into three printing modes, i.e., piezoelectric inkjet, acoustic inkjet, and thermal inkjet. The resolution of inkjet printing is low compared to the etching process of conventional silicon-based microelectronics technologies, resulting in limited applications. The accuracy of ink jet printing is typically 20 μm, and by selecting the appropriate ink jet head and ink, the resolution can be increased to 400nm. The ejection characteristics of the ink, the solution evaporation behavior, the ink viscosity and the nozzle diameter are all important parameters affecting the resolution. At present, the ink-jet printing is a digitally controllable patterning mode, is simultaneously suitable for preparing films of various materials, and is a reliable printing technology.
The existing printing equipment or printing device is mainly suitable for printing plane media, including printing plate media, such as paperboards, cartons and the like; and to the printing of the medium of bar and easy deformation, when printing through planar medium, can produce the phenomenon of local deformation, on the one hand influences the printing precision, on the other hand can appear printing error. Furthermore, the circular arc-shaped printing device in the prior art improves the problem, but because the existing arc-shaped printing device is a structure similar to an arc surface formed by splicing a plurality of planar supporting structures, the structure of the full arc surface cannot be achieved, so that the problems of warping angle and unevenness still exist for printing of a strip-shaped structure.
In short, in printing on a strip medium in the prior art, the printing accuracy is not high enough and the printing efficiency is not high enough.
Disclosure of Invention
Based on this, it is an object of the present application to provide a printing apparatus for a strip medium, which has the advantage of printing with higher precision and efficiency.
In one aspect of the present application, a printing apparatus for a strip-shaped medium is provided, including a support mechanism, a belt conveying mechanism, a printing platform, a first tensioning mechanism, a second tensioning mechanism, and a printing mechanism;
the belt conveying mechanism is arranged on the supporting mechanism; the printing platform is arranged on the supporting mechanism and is connected with the belt conveying mechanism; the printing mechanism is arranged on the supporting mechanism and is arranged above the printing platform;
the first tensioning mechanism and the second tensioning mechanism are respectively arranged on the supporting mechanism and are respectively arranged at two ends of the belt conveying mechanism;
the section shape of the upper surface of the printing platform is a circular arc with the middle high and the two low ends; the middle part of the upper half circle of the conveying belt of the belt conveying mechanism is tightly attached to the upper surface of the printing platform for conveying;
the printing medium is conveyed on a conveying belt of the belt conveying mechanism, and is tensioned and clung to the upper surface of the conveying belt through a first tensioning mechanism and a second tensioning mechanism respectively, so that the printing medium has the same shape as the upper surface of the printing platform when passing through the upper surface of the printing platform; the printing mechanism prints a job on the printing medium vertically downward from above the printing medium.
According to the printing device for the strip-shaped medium, the belt conveying mechanism is arranged on the supporting mechanism, and the printing medium is tensioned through the first tensioning mechanism and the second tensioning mechanism at two ends of the belt conveying mechanism respectively, so that the printing medium is tightly attached to the belt conveying mechanism for conveying; the upper half circle of the conveying belt of the belt conveying mechanism is attached to the upper surface of the printing platform, so that the contact part of the conveying belt and the printing platform is consistent with the upper surface of the printing platform in shape, and the section of the upper half circle of the conveying belt is arc-shaped, and the middle of the upper half circle is high and the two ends of the upper half circle are low. Therefore, the printing medium is tightly attached to the conveying belt under the action of the tensioning force of the first tensioning mechanism and the second tensioning mechanism, and therefore the distance between the printing medium and the printing nozzle is smaller in the printing state, and the printing efficiency and the printing precision of the printing nozzle are higher. Because the printing medium is in a motion state in the printing state, the closer the printing nozzle is to the printing medium, the more accurate and the higher the printing precision can be realized, and finally, compared with the prior art, the printing precision and the printing efficiency can be improved.
Further, a plurality of groups of printing nozzle components of the printing mechanism are respectively arranged on the printing support frame through nozzle support plates;
the bottom surfaces of the spray head support plates are inclined with each other in pairs, so that the spray head support plates and the printing platform have a shape following effect.
Further, the first tensioning mechanism comprises a first upper tensioning wheel, a first swinging rod, a first lower tensioning wheel and a first width limiting assembly;
the wheel shaft of the first upper tensioning wheel is arranged on the supporting mechanism in a lifting manner;
one end of the first swinging rod is hinged to the supporting mechanism;
the rotating shaft of the first lower tensioning wheel is arranged at the other end of the first swinging rod;
the first width limiting assembly is mounted on the support mechanism and is used for limiting the relative position of the printing medium at the feeding end of the conveying belt.
Further, the first tensioning mechanism further comprises a through signal detection sensor and a height detection sensor;
the passing signal detection sensor and the height detection sensor are respectively arranged on the supporting mechanism;
and the detection ends of the passing signal detection sensor and the height detection sensor are respectively arranged above the conveying belt.
Further, the second tensioning mechanism comprises a second upper tensioning wheel, a second swinging rod, a second lower tensioning wheel and a second width limiting assembly;
the wheel shaft of the second upper tensioning wheel is arranged on the supporting mechanism in a lifting manner;
one end of the second swinging rod is hinged to the supporting mechanism;
the rotating shaft of the second lower tensioning wheel is arranged at the other end of the second swinging rod;
the second width limiting assembly is arranged on the supporting mechanism and used for limiting the relative position of the printing medium at the discharging end of the conveying belt.
Further, the belt conveying mechanism comprises a first belt pulley, a second belt pulley, a conveying belt, a belt driver and an encoder;
the first belt pulley and the second belt pulley are respectively arranged on the supporting mechanism; the rotation axes of the first belt pulley, the second belt pulley, the first upper tensioning wheel, the second lower tensioning wheel, the first lower tensioning wheel and the second lower tensioning wheel are parallel;
the conveying belt is sleeved on the first belt pulley and the second belt pulley respectively;
the belt driver is connected with the first belt pulley or the second belt pulley and is used for driving the first belt pulley or the second belt pulley to rotate;
the encoder is connected with the first belt pulley or the second belt pulley and is used for reading the travel distance of the conveying belt;
the printing medium is pressed and attached to the conveying belt through the first lower tensioning wheel and the second lower tensioning wheel;
the highest point of the rotation stroke of the first belt pulley is lower than the upper surface of the printing platform, and the highest point of the rotation stroke of the second belt pulley is lower than the upper surface of the printing platform; so that the printing medium is attached to the upper surface of the conveying belt on the printing platform for conveying.
Further, the supporting mechanism comprises a base, a supporting bottom plate, a first side plate and a second side plate;
the supporting bottom plate is arranged on the base;
the first side plate and the second side plate are respectively arranged at two sides of the supporting bottom plate;
the first swing rod is hinged to the first side plate; the first belt pulley, the first width limiting assembly and the first upper tensioning wheel are respectively arranged on the first side plate;
the second swinging rod is hinged to the second side plate; the second belt pulley, the second width limiting assembly and the second upper tensioning wheel are respectively arranged on the second side plate.
Further, the device further comprises a controller, and the belt conveying mechanism, the first tensioning mechanism, the second tensioning mechanism and the printing mechanism are respectively and electrically connected with the controller.
Further, the printing nozzle of the printing mechanism can be arranged in a lifting manner.
Further, limited width plates are respectively formed on two sides of the printing platform, and the limited width plates are used for limiting the conveying width positions of the conveying belt.
For a better understanding and implementation, the present application is described in detail below with reference to the drawings.
Drawings
FIG. 1 is a front view of an exemplary printing apparatus for strip media of the present application;
FIG. 2 is a front view of an assembly structure of an exemplary belt conveyor mechanism, printing platform, first tensioning mechanism, second tensioning mechanism of the present application;
FIG. 3 is a schematic perspective view of an assembly structure of an exemplary belt conveyor, printing platform, first tensioning mechanism, second tensioning mechanism of the present application;
fig. 4 is a schematic diagram of the positional relationship between the nozzle support plate and the printing platform according to an exemplary embodiment of the present application.
Detailed Description
In the description of the present application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
Referring to fig. 1-4, an exemplary printing apparatus for a strip-shaped medium of the present application includes a support mechanism 10, a belt conveying mechanism 50, a printing platform 40, a first tensioning mechanism 20, a second tensioning mechanism 30, and a printing mechanism 60;
the belt conveying mechanism 50 is mounted on the supporting mechanism 10; the printing platform 40 is mounted on the supporting mechanism 10 and is connected with the belt conveying mechanism 50; the printing mechanism 60 is mounted on the supporting mechanism 10 and is arranged above the printing platform 40;
the first tensioning mechanism 20 and the second tensioning mechanism 30 are respectively arranged on the supporting mechanism 10 and are respectively arranged at two ends of the belt conveying mechanism 50;
the cross section of the upper surface of the printing platform 40 is in the shape of a circular arc with a middle high and two ends low; the middle part of the upper half circle of the conveying belt 53 of the belt conveying mechanism 50 is tightly attached to the upper surface of the printing platform 40 for conveying;
the printing medium is conveyed on a conveying belt 53 of the belt conveying mechanism 50, and is tensioned and clung to the upper surface of the conveying belt 53 through a first tensioning mechanism 20 and a second tensioning mechanism 30 respectively, so that the printing medium has the same shape as the upper surface of the printing platform 40 when passing through the upper surface of the printing platform 40; the printing mechanism 60 performs a print job on the print medium vertically downward from above the print medium.
According to the printing device for the strip-shaped medium, the belt conveying mechanism 50 is arranged on the supporting mechanism 10, and the printing medium is tensioned through the first tensioning mechanism 20 and the second tensioning mechanism 30 at two ends of the belt conveying mechanism 50 respectively, so that the printing medium is tightly attached to the belt conveying mechanism 50 for conveying; the upper half of the belt 53 of the belt conveyor 50 is attached to the upper surface of the printing platform 40, so that the portion of the belt 53 contacting the printing platform 40 has a shape corresponding to the upper surface of the printing platform 40, and is circular in cross-section and has a high middle and low ends. Accordingly, the printing medium is tightly attached to the conveyor belt 53 by the tensioning force of the first tensioning mechanism 20 and the second tensioning mechanism 30, so that the distance between the printing medium and the printing nozzle 61 is smaller, the printing efficiency of the printing nozzle 61 is higher, and the printing accuracy is higher in the printing state of the printing medium. Since the printing medium is in a moving state in the printing state, the closer the printing head 61 is to the printing medium, the more accurate and precise printing can be realized, and finally, the printing precision and printing efficiency can be improved as compared with the prior art.
In some preferred embodiments, the plurality of sets of printing head 61 assemblies of the printing mechanism 60 are each mounted on a printing carriage (not shown) by a head carriage plate 62;
the bottom surfaces of the plurality of nozzle support plates 62 are inclined with respect to each other, so that the plurality of nozzle support plates 62 and the printing platform 40 have a conformal effect.
Referring to fig. 4, the "shape-following" refers to the axis M of the nozzle support plate 62 passing through the center of the circle on the upper surface N of the printing platform 40, so as to present a distribution state that a plurality of nozzle support plates 62 are concentric with the upper surface of the printing platform 40.
When the printing nozzle 61 descends and is close to the printing platform 40, the nozzle support plate 62 assembled by the printing nozzle 61 is connected with the printing platform 40 along with the printing platform 40, so that the distance between the ink-jet opening of the printing nozzle 61 and the printing platform 40 can be sufficiently short, even the printing nozzle 61 can spray ink on a printing medium more quickly in a close state by naked eyes, the ink-jet stroke is shortened, and the printing precision and efficiency are improved.
In some preferred embodiments, the first tensioning mechanism 20 comprises a first upper tensioning wheel 24, a first swinging rod 22, a first lower tensioning wheel 21, a first width limiting assembly 23;
the wheel axle of the first upper tensioning wheel 24 is arranged on the supporting mechanism 10 in a lifting manner;
one end of the first swing rod 22 is hinged on the supporting mechanism 10;
the rotating shaft of the first lower tensioning wheel 21 is arranged at the other end of the first swinging rod 22;
the first width limiting assembly 23 is mounted on the support mechanism 10 for defining the relative position of the print medium at the feed end of the conveyor belt 53.
In some preferred embodiments, the first upper tensioning wheel 24 is mounted on the support mechanism 10 by a first elevation drive assembly 25, and the elevation of the first upper tensioning wheel 24 is driven by the first elevation drive assembly 25.
The first tensioning mechanism 20 is used to tension the print medium. Wherein a first upper tensioning wheel 24 presses the printing medium downwards.
In some preferred embodiments, the first tensioning mechanism 20 further comprises a pass signal detection sensor 26 and a height detection sensor 27;
the passing signal detection sensor 26 and the height detection sensor 27 are mounted on the support mechanism 10, respectively;
and the detection ends of the passing signal detection sensor 26 and the height detection sensor 27 are respectively disposed above the conveying belt 53.
The pass signal detection sensor 26 may be an infrared ranging sensor having a transmitting end and a receiving end, and the transmitting end and the receiving end may be on the same module for receiving the reflected signal; the height detection sensor 27 may also be an infrared ranging sensor, which also has a transmitting end and a receiving end, which are respectively located at both sides of the conveyor belt 53, with one end transmitting and the other end receiving.
The signal detection sensor 26 and the height detection sensor 27 operate in different manners.
The infrared ray or laser emitted by the signal detection sensor 26 goes downwards, whether the printing medium passes or not is acquired according to the fed back signal or light, if the signal that the printing medium passes is detected, the printing signal is triggered, and the printing device starts to print after triggering.
The infrared ray or laser emitted by the height detection sensor 27 is downwards used for acquiring the height distance of the printing medium according to the fed-back signal or light; when the print medium thickness is too high, the signal is detected, triggering an alarm and stopping the movement of the conveyor belt 53.
In some preferred embodiments, the second tensioning mechanism 30 comprises a second upper tensioning wheel 35, a second swinging rod 32, a second lower tensioning wheel 31, a second width limiting assembly 33;
the wheel shaft of the second upper tensioning wheel 35 is arranged on the supporting mechanism 10 in a lifting manner;
one end of the second swing rod 32 is hinged on the supporting mechanism 10;
the rotating shaft of the second lower tensioning wheel 31 is arranged at the other end of the second swinging rod 32;
the second width limiting assembly 33 is mounted on the support mechanism 10 for defining the relative position of the print medium at the discharge end of the conveyor belt 53.
The second tensioning mechanism 30 cooperates with the first tensioning mechanism 20 to tension the printing medium from both ends, respectively.
In some preferred embodiments, the second upper tension pulley 35 is mounted on the support mechanism 10 by a second elevation drive assembly 34, and elevation of the second upper tension pulley 35 is driven by the second elevation drive assembly 34.
In some preferred embodiments, the belt conveyor mechanism 50 includes a first pulley 51, a second pulley 52, a conveyor belt 53, a belt drive 54, an encoder 55;
the first pulley 51 and the second pulley 52 are respectively mounted on the supporting mechanism 10; and the rotation axes of the first pulley 51, the second pulley 52, the first upper tension pulley 24, the second lower tension pulley 31, the first lower tension pulley 21, and the second lower tension pulley 31 are parallel;
the conveying belt 53 is respectively sleeved on the first belt pulley 51 and the second belt pulley 52;
the belt driver 54 is connected to the first pulley 51 or the second pulley 52, and is configured to drive the first pulley 51 or the second pulley 52 to rotate;
the encoder 55 is connected to the first pulley 51 or the second pulley 52 for reading the travel distance of the conveyor belt 53;
the printing medium is pressed and attached on the conveying belt 53 through the first lower tension pulley 21 and the second lower tension pulley 31;
the highest point of the rotation travel of the first belt pulley 51 is lower than the upper surface of the printing platform 40, and the highest point of the rotation travel of the second belt pulley 52 is lower than the upper surface of the printing platform 40; so that the printing medium is attached to the upper surface of the conveying belt 53 on the printing platform 40 for conveyance.
The manner in which the print medium is assembled with the printing apparatus of the present application will be described to explain the principle of operation. The printing medium takes the shape of a strip, which sequentially bypasses the lower part of the first lower tension pulley 21, the gap between the first upper tension pulley 24 and the first belt pulley 51, the surface of the upper half circle of the conveying belt 53, the gap between the second upper tension pulley 35 and the second belt pulley 52, and the lower part of the second lower tension pulley 31; and, the width positions of the first width limiting assembly 23 and the second width limiting assembly 33 are limited, so that the width positions of the printing medium and the conveying belt 53 are relatively stable, and the positions of the printing medium and the printing nozzle 61 are relatively stable.
Therefore, the first lower tension pulley 21, the first pulley 51, the second pulley 52, and the second lower tension pulley 31 respectively play a role in tensioning the printing medium, and the first upper tension pulley 24 and the second upper tension pulley 35 respectively play a role in pressing down the printing medium.
In some preferred embodiments, the axes of rotation of the first upper tensioner 24 and the first pulley 51 are in the same vertical plane, and the axes of rotation of the second upper tensioner 35 and the second pulley 52 are in the same vertical plane; so that the first upper tension pulley 24 and the first pulley 51 are used in combination in pairs, and the second upper tension pulley 35 and the second pulley 52 are used in combination in pairs.
In some preferred embodiments, the support mechanism 10 includes a base, a support bottom 13, a first side panel 11, and a second side panel 12;
the supporting bottom plate 13 is arranged on the base;
the first side plate 11 and the second side plate 12 are respectively installed at both sides of the support base plate 13;
the first swing lever 22 is hinged to the first side plate 11; the first pulley 51, the first width limiting assembly 23 and the first upper tensioning wheel 24 are respectively mounted on the first side plate 11;
the second swing lever 32 is hinged to the second side plate 12; the second pulley 52, the second width limiting assembly 33 and the second upper tensioning wheel 35 are mounted on the second side plate 12, respectively.
In some preferred embodiments, the apparatus further comprises a controller, and the belt conveying mechanism 50, the first tensioning mechanism 20, the second tensioning mechanism 30, and the printing mechanism 60 are electrically connected to the controller, respectively.
In some preferred embodiments, the print head 61 of the printing mechanism 60 is configured to be raised and lowered.
In some preferred embodiments, the printing platform 40 is formed with limited width plates on both sides thereof, respectively, for defining the transport width position of the transport belt 53.
The present application illustrates the principle of operation of a printing device for a strip medium:
in the printing state, the printing head 61 of the printing mechanism 60 is lowered by the drive of the elevation drive mechanism until the printing head 61 is lowered to be close to the printing medium, and the printing medium is tensioned and continuously conveyed on the conveying belt 53.
In the whole printing process, the printing medium is attached to the conveying belt 53 and conveyed, and the printing operation is performed through the printing nozzle 61, so that the printing device can enable the printing nozzle 61 to complete printing faster, and high printing precision can be ensured while efficient printing and conveying are performed.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application.

Claims (10)

1. A printing device for a strip-shaped medium, characterized by: the printing device comprises a supporting mechanism, a belt conveying mechanism, a printing platform, a first tensioning mechanism, a second tensioning mechanism and a printing mechanism;
the belt conveying mechanism is arranged on the supporting mechanism; the printing platform is arranged on the supporting mechanism and is connected with the belt conveying mechanism; the printing mechanism is arranged on the supporting mechanism and is arranged above the printing platform;
the first tensioning mechanism and the second tensioning mechanism are respectively arranged on the supporting mechanism and are respectively arranged at two ends of the belt conveying mechanism;
the section shape of the upper surface of the printing platform is a circular arc with the middle high and the two low ends; the middle part of the upper half circle of the conveying belt of the belt conveying mechanism is tightly attached to the upper surface of the printing platform for conveying;
the printing medium is conveyed on a conveying belt of the belt conveying mechanism, and is tensioned and clung to the upper surface of the conveying belt through a first tensioning mechanism and a second tensioning mechanism respectively, so that the printing medium has the same shape as the upper surface of the printing platform when passing through the upper surface of the printing platform; the printing mechanism prints a job on the printing medium vertically downward from above the printing medium.
2. The printing device for strip media of claim 1 wherein: a plurality of groups of printing nozzle assemblies of the printing mechanism are respectively arranged on the printing support frame through nozzle support plates;
the bottom surfaces of the spray head support plates are inclined with each other in pairs, so that the spray head support plates and the printing platform have a shape following effect.
3. The printing apparatus for strip media of claim 2 wherein: the first tensioning mechanism comprises a first upper tensioning wheel, a first swinging rod, a first lower tensioning wheel and a first width limiting assembly;
the wheel shaft of the first upper tensioning wheel is arranged on the supporting mechanism in a lifting manner;
one end of the first swinging rod is hinged to the supporting mechanism;
the rotating shaft of the first lower tensioning wheel is arranged at the other end of the first swinging rod;
the first width limiting assembly is mounted on the support mechanism and is used for limiting the relative position of the printing medium at the feeding end of the conveying belt.
4. A printing apparatus for strip media as in claim 3 wherein: the first tensioning mechanism further comprises a signal detection sensor and a height detection sensor;
the passing signal detection sensor and the height detection sensor are respectively arranged on the supporting mechanism;
and the detection ends of the passing signal detection sensor and the height detection sensor are respectively arranged above the conveying belt.
5. A printing apparatus for strip media as in claim 3 wherein: the second tensioning mechanism comprises a second upper tensioning wheel, a second swinging rod, a second lower tensioning wheel and a second width limiting assembly;
the wheel shaft of the second upper tensioning wheel is arranged on the supporting mechanism in a lifting manner;
one end of the second swinging rod is hinged to the supporting mechanism;
the rotating shaft of the second lower tensioning wheel is arranged at the other end of the second swinging rod;
the second width limiting assembly is arranged on the supporting mechanism and used for limiting the relative position of the printing medium at the discharging end of the conveying belt.
6. The printing apparatus for strip media of claim 5 wherein: the belt conveying mechanism comprises a first belt pulley, a second belt pulley, a conveying belt, a belt driver and an encoder;
the first belt pulley and the second belt pulley are respectively arranged on the supporting mechanism; the rotation axes of the first belt pulley, the second belt pulley, the first upper tensioning wheel, the second lower tensioning wheel, the first lower tensioning wheel and the second lower tensioning wheel are parallel;
the conveying belt is sleeved on the first belt pulley and the second belt pulley respectively;
the belt driver is connected with the first belt pulley or the second belt pulley and is used for driving the first belt pulley or the second belt pulley to rotate;
the encoder is connected with the first belt pulley or the second belt pulley and is used for reading the travel distance of the conveying belt;
the printing medium is pressed and attached to the conveying belt through the first lower tensioning wheel and the second lower tensioning wheel;
the highest point of the rotation stroke of the first belt pulley is lower than the upper surface of the printing platform, and the highest point of the rotation stroke of the second belt pulley is lower than the upper surface of the printing platform; so that the printing medium is attached to the upper surface of the conveying belt on the printing platform for conveying.
7. The printing apparatus for strip media of claim 6 wherein: the supporting mechanism comprises a base, a supporting bottom plate, a first side plate and a second side plate;
the supporting bottom plate is arranged on the base;
the first side plate and the second side plate are respectively arranged at two sides of the supporting bottom plate;
the first swing rod is hinged to the first side plate; the first belt pulley, the first width limiting assembly and the first upper tensioning wheel are respectively arranged on the first side plate;
the second swinging rod is hinged to the second side plate; the second belt pulley, the second width limiting assembly and the second upper tensioning wheel are respectively arranged on the second side plate.
8. The printing apparatus for strip media as in any one of claims 1-7 wherein: the device further comprises a controller, and the belt conveying mechanism, the first tensioning mechanism, the second tensioning mechanism and the printing mechanism are respectively and electrically connected with the controller.
9. The printing device for strip media of claim 8 wherein: the printing nozzle of the printing mechanism can be arranged in a lifting manner.
10. The printing device for strip media of claim 8 wherein: and two sides of the printing platform are respectively formed with a limited width plate, and the limited width plates are used for limiting the conveying width position of the conveying belt.
CN202311717968.1A 2023-12-14 2023-12-14 Printing device for strip-shaped medium Pending CN117485029A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311717968.1A CN117485029A (en) 2023-12-14 2023-12-14 Printing device for strip-shaped medium

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CN202311717968.1A CN117485029A (en) 2023-12-14 2023-12-14 Printing device for strip-shaped medium

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