WO2017000749A1

WO2017000749A1 - Laser printing material spreading device for architectural and decorative bricks

Info

Publication number: WO2017000749A1
Application number: PCT/CN2016/084756
Authority: WO
Inventors: 梁海果; 严苏景; 严文记; 缪磊
Original assignee: 佛山市博晖机电有限公司
Priority date: 2015-07-01
Filing date: 2016-06-03
Publication date: 2017-01-05
Also published as: CN104999802A

Abstract

A laser printing material spreading device for architectural and decorative bricks comprises: a printing mechanism (1), a transfer belt mechanism (2), and a conveyor belt mechanism (3). The transfer belt mechanism comprises sub-transfer belts (21) correspondingly disposed under respective printhead assemblies (11), and driving mechanisms (22, 23, 24) independently driving respective sub-transfer belts. In the laser printing material spreading device, a conventional integrally-formed transfer belt is replaced with the sub-transfer belts corresponding to the printhead assemblies, thereby significantly reducing a length as well as a free-span distance of the transfer belt, and accordingly rendering tensile strength of each part of the transfer belt more balanced. Moreover, each sub-transfer belt corresponds to a printhead assembly; thus the number of the sub-transfer belts can be increased or decreased when there is a need to increase or decrease the number of the printheads, thereby increasing flexibility in adjusting the device.

Description

Architectural and decorative brick laser printing cloth equipment

Technical field

The invention relates to the field of brick surface printing, in particular to a laser printing cloth device for building and decorative bricks.

Background technique

In modern architectural decoration, a large number of brick materials, such as tiles, glass and other composite bricks, are required. In order to improve the decorative effect, after the processing of such building brick blanks, the surface is also passed through the powder. Materials, glazes or pigments (hereinafter collectively referred to as "colorants") are printed with various patterns or patterns.

There are two general printing methods for existing tiles, one is the traditional inkjet printing method, which is used less and less in the industry due to high cost of consumables and high equipment failure rate; The laser printing technology prints and images the toner through charging, exposure, development, transfer, fixing, etc., to avoid the problem that the inkjet equipment has high cost of consumables and the nozzle is easy to block. The general structure of the prior art laser printing apparatus includes a plurality of print head mechanisms arranged side by side, a transfer belt is disposed under the plurality of print head mechanisms, and a blank conveyor belt is disposed under the transfer belt, and the color pattern is firstly worked when working. Separating into a plurality of monochrome images, each print head mechanism transfers the respective monochromatic color materials onto the transfer belt and superimposes them to form a complete color pattern, and then transfers the material to the blank through the transfer belt. Achieve the printing of the pattern. Among them, the colorant represents a mixture of a colorant and an iron powder, and the iron powder is used as a color carrier.

However, existing printing devices have the following problems:

1. The existing transfer belt is disposed under a plurality of transfer heads by a transfer belt, and the length of the transfer belt is long. Since the transfer belt is supported by a flexible material, the transfer belt is made too long to make the transfer belt The tension of the different parts is different, and the change of the tension causes the transfer belt to be in a state of small tension and slackening during the operation. When the front side is rotated to the back side, the change of the tension degree is likely to be caused. The falling off of the powder causes it to accidentally fall on the unpredetermined position of the tile surface, destroying the printing effect. For example, Patent No. 201420506763.9, a patent document entitled "LED Printer for Ceramics", a transfer wheel that runs on a transfer belt through a drive, a guide wheel that guides a change in the running direction of the transfer belt, and a transfer roller. The support becomes an irregular polygon. During operation, the tension of the surface of the transfer belt on each side is different. When the transfer belt runs from the front to the surface, the tension on the surface of the transfer belt changes. Relaxation or tensioning, so that the adhesion of the color material is lowered, and it is easy to cause the material to be removed.

2. Depending on the image mode, the number of printheads required is different. For example, 10RGB mode uses three printheads, CMYK mode requires four printheads, and some special image modes require even more printheads. Since the length of the transfer belt is a fixed length and matches the parallel length of the print head, the existing printing device only For an image mode, when the number of print heads on the device changes, it is necessary to replace the transfer mechanism of the transfer belt and the transfer belt of the corresponding specifications, otherwise it cannot be matched with the print head after the number is increased or decreased, for example, The original device is designed for the image printing needs of CMYK mode. When it is necessary to print the image in RGB mode, it is necessary to deactivate a print head. At this time, the conveyor belt adds an invalid stroke, the device needs to be re-commissioned, and when the print head When the number is changed from less to more, the situation is more complicated. Since there is no corresponding transfer belt under the newly added print head, the entire transfer belt needs to be replaced, and the corresponding transfer belt drive device also needs to be replaced. Therefore, there is a shortage of flexibility in the use of existing equipment.

Summary of the invention

The object of the present invention is to solve the deficiencies of the prior art, and to provide a building and decorative brick laser printing cloth device with stable tension of the transfer belt and improved adjustment flexibility of the device.

In order to achieve the above object, the present invention adopts the following technical solutions:

The device includes:

Printing mechanism: having a plurality of print head assemblies, which are arranged side by side between the plurality of print head assemblies for printing the color material onto the target;

a transfer belt mechanism: as a target of printing, disposed under the printing mechanism, having a transfer belt and a transfer belt driving mechanism for driving the transfer belt to operate;

Conveyor belt mechanism: a carrying and conveying mechanism as a blank, disposed under the transfer belt mechanism, having a conveyor belt for carrying the blank and a belt driving mechanism for driving the transfer belt;

The improvements are:

The transfer belt mechanism includes a sub-transfer belt correspondingly disposed under each of the print head assemblies and a drive mechanism that independently drives each of the sub-transfer belts.

In the above structure, each of the print head assemblies includes:

The color material conveying bin has a hollow body, and a color material inlet and a color material outlet are arranged on the hollow body for storing and conveying the color material;

Magnetic roller: disposed at the color material outlet of the color material conveying bin, has a magnetic roller central axis rotating along the center thereof and a magnetic roller body sleeved on the central axis of the magnetic roller for adsorbing the color in the color material conveying bin material;

The exposure roller is disposed on the side of the magnetic roller, and has an exposure roller central axis rotating along the center thereof and an exposure roller body sleeved on the central axis of the exposure roller for exposing to form an exposure pattern region;

a charging roller: disposed adjacent to the exposure roller and tangentially disposed with the exposure roller, having a central axis of the charging roller rotating along the center thereof and a charging roller body sleeved on the central axis of the charging roller for charging the exposure roller;

LED exposure light source: is disposed above the exposure roller for exposing the exposure roller.

In the above structure, the sub-transfer belt is provided in a rounded regular polygon shape.

In the above structure, the upper portion of the sub-transfer belt is a horizontal plane, and the sub-transfer belt provided in a rounded regular polygon includes an odd number of sides.

In the above structure, the exposure roller is tangent to any one of the sub-transfer belts.

In the above structure, the driving mechanism of the sub-transfer belt includes at least one driving wheel and/or a plurality of driven wheels, a charged first transfer roller, and the driving mechanism of the sub-transfer belt includes at least A driving wheel and/or a plurality of driven wheels, the charged first transfer roller support the transfer belt to have an odd-numbered side regular polygon, wherein the charged first transfer roller is disposed at the bottom.

In the above configuration, the inner side of the conveyor belt is provided with a second transfer roller having a polarity opposite to that of the first transfer roller corresponding to a position below each of the first transfer rollers.

In the above structure, the inside of the sub-transfer belt is provided with a charged third transfer roller at a position below the exposure roller, and the charge of the third transfer roller and the charge electrode of the first transfer roller The opposite is true.

Since the above structure is employed, the present invention replaces the conventional integral transfer belt by a sub-transfer belt corresponding to the print head assembly, and since the length of the transfer belt is greatly reduced, the distance of the free travel on the transfer belt is greatly shortened. Therefore, the tension of each part on the transfer belt is relatively average; moreover, each sub-transfer belt corresponds to one print head assembly, and the number of sub-transfer belts can be simultaneously increased or decreased when the number of print heads needs to be increased or decreased, so that the equipment is modified. More flexible.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a schematic structural view of an embodiment of the present invention;

2 is a schematic structural view of a print head according to an embodiment of the present invention;

3 is a schematic view showing the structure of a self-transfer belt according to an embodiment of the present invention.

detailed description:

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Due to the difference in the structural relationship of the components, the following is divided into two examples to analyze the specific structure of the blank laser printing cloth apparatus of the present invention. 1 and 2, a blank laser printing cloth apparatus according to a first embodiment of the present invention includes:

Printing mechanism 1: having a plurality of print head assemblies 11 arranged in parallel between the plurality of print head groups 11 for printing color materials onto the target;

The transfer belt mechanism 2 is provided below the printing mechanism 1 as a target of printing, and has a transfer belt and a transfer belt driving mechanism that drives the operation of the transfer belt;

Conveyor mechanism 3: as a carrying and transporting mechanism of the blank 4, disposed under the transfer belt mechanism 2, having a conveyor belt 31 carrying the blank and a belt drive mechanism 32 driving the transfer belt;

among them:

The transfer belt 21 includes a sub-transfer belt 21 correspondingly disposed under each of the print head 11 assemblies and a drive mechanism that independently drives each of the sub-transfer belts.

In operation, each print head assembly 11 prints a monochrome pattern onto the corresponding sub-transfer belt 21, and the blank placed on the conveyor belt 31 passes under each sub-transfer belt, whereby the sub-transfer belt 21 will The respective monochrome patterns carried are transferred to the surface of the blank 4, and the blank 4 passes through the entire sub-transfer belt 21 to form a complete color pattern on the surface of the blank 4. Since the length of the transfer belt 21 is greatly reduced, the distance of the free travel on the transfer belt 21 is greatly shortened, and the free stroke here refers to the portion between the two support points inside the transfer belt, and the free stroke is larger. The tension between the tension of the portion away from the inner support point on the free stroke and the tension of the portion close to the inner support point is larger, so the smaller the ability to overcome the self-gravity and maintain the tension state, the greater the probability of deformation, and vice versa. The distance is greatly shortened so that the tension of each part on the transfer belt is relatively average, so that when the sub-transfer belt loaded with the color material passes through various parts, the influence of the shape change of the sub-transfer belt on the adhesion of the color material is small, and the work is ensured. Stability and accuracy.

It should be noted that the present embodiment brings about a change in the transfer order by the change of the structure compared with the prior art. In the prior art, the transfer head is passed through each of the print head assemblies, and the print head assembly is accordingly The monochrome pattern is printed onto the transfer belt, and after passing through all of the print head assemblies, a complete color pattern is formed on the transfer belt; and in this embodiment, each of the sub-transfer belts 21 will only have a corresponding print head assembly. The monochromatic pattern outputted by the 11 is transferred, and then the billet 4 is driven by the belt mechanism 3 to pass under each of the sub-transfer belts 21, and after passing through all the sub-transfer belts 21, a complete color is formed on the blank 4. Pattern; such a transfer process also brings the advantage that the transfer is performed on the existing long transfer belt, and the pattern transferred onto the blank is easily caused when the toner is peeled off after being imaged. Indeed, the formation of waste; and the separation of the color pattern into a single color to a plurality of sub-transfer belts, due to the color of the same position on the plurality of transfer belts The probability of peeling off at the same time is extremely low, so even if the toner peeling occurs at a certain position on a certain sub-transfer belt, the color pattern formed on the blank is still a complete pattern, and only the color difference of the preset color pattern is compared. However, it can be used as a defective product, and the color contrast of the pattern is not obvious, and the performance of the pattern is not affected.

For a clearer and more complete description of embodiments of the invention, various portions of the first embodiment are described in further detail below.

The printing mechanism is the main image forming mechanism of the apparatus, and is separated from each of the print head assemblies 101 by separating the color pattern into a plurality of monochrome patterns, each of the print head assemblies 11 including:

The color material conveying container 111 has a hollow body 1111, and a color material inlet 1112 and a color material outlet 1113 are disposed on the hollow body 1111 for storing and conveying the color material, wherein the color material is usually charged, generally negative. Electric charge

The magnetic roller 112 is disposed at the toner outlet 1113 of the toner conveying chamber 111, and has a magnetic roller central axis 1121 rotating along the center thereof and a magnetic roller body 1122 sleeved on the magnetic roller central axis 1121 for adsorbing color. The color material in the material conveying bin;

The exposure roller 113 is disposed at a side of the magnetic roller 112, and has a central axis of the exposure roller 1131 rotating along the center thereof and an exposure roller body 1132 sleeved on the exposure roller central axis 1131 for exposing to form an exposure pattern region;

The charging roller 114 is disposed beside the exposure roller 113 and is tangentially disposed with the exposure roller 113. The charging roller has a central axis 1141 rotating along its center and a charging roller body 1142 that is sleeved on the central axis 1141 of the charging roller. Charging the exposure roller 113;

The LED exposure light source 115 is disposed above the exposure roller 113 for exposing the exposure roller 113.

The exposure roller 113 is a toner cartridge in a general sense, and the structural design differs according to actual needs. During operation, the magnetic roller 112 rotates, and the color material in the toner conveying chamber 111 is adsorbed on the surface of the magnetic roller body 1122, and the charging roller is simultaneously charged. 114 and the LED exposure light source 115 cooperate to cause an electrostatic region in the pattern distribution on the exposure roller 113. When the exposure roller 113 rotates through the magnetic roller 112, the color material on the surface of the magnetic roller body 1122 is adsorbed to the electrostatic region due to the action of static electricity. A monochrome pattern is formed on the surface of the exposure roller body 1132.

In order to further impart an average tension to the respective portions on the sub-transfer belt 21, in the above configuration, the sub-transfer belt 21 is provided in a rounded regular polygonal shape. The positive polygon is set to make the force of each edge equal. The rounded structure is because the driving wheel or roller needs to be mounted at the corner of the polygon to support the sub-transfer belt as a regular polygonal structure, since the sub-transfer belt 21 is The support is a three-dimensional structure, so the regular polygonal structure described herein includes at least two equal-length sides, instead of the form of at least three sides of the regular polygon in the usual sense, for example, the sub-transfer belt is supported by two driving rollers. Includes two parallel and equal length sides.

Theoretically, the exposure roller 113 is tangent to any one side of the sub-transfer belt 21 to transfer the pattern to the sub-rotation The surface of the printing tape 21 needs to be determined according to the volume of the component and the installation space in the actual installation.

In addition, the driving mechanism of the sub-transfer belt 21 includes at least one driving wheel 22 and/or a plurality of driven wheels 23, and a charged first transfer roller 24, which includes at least one driving wheel 22 and/or several The driven wheel 23 and the charged first transfer roller 24 support the transfer belt 21 to have an odd-numbered side regular polygon in which the charged first transfer roller 24 is disposed at the lowermost position.

Hereinafter, the structural relationship of each component will be described in detail with the structure of a rounded equilateral triangle in combination with a figure. Since a protruding portion preferably has a protruding portion in contact with the blank 4 or is transferred to achieve transfer, the transfer belt 21 in this embodiment is used. The rounded regular triangle is an inverted structure, and the uppermost surface is a horizontal plane, which is tangent to the exposure roller 113. On the configuration of the driving wheel 22 and/or the plurality of driven wheels 23 and the charged first transfer roller 24, all of them may be The driving wheel 22 may be synchronized between rotations, and a matching structure of the driving wheel 22 and the plurality of driven wheels 23 may be employed, and the charged first transfer roller 24 is used to assist the transfer to the blank, so The first transfer roller 24 is disposed at the lowest rounded corner.

The first transfer roller 24 is detached from the transfer belt 21 by the principle of homosexual repulsiveness to be transferred onto the blank. On the basis of this, in the present embodiment, the inner side of the conveyor belt 31 corresponds to each of the first A position below the transfer roller 24 is provided with a second transfer roller 33 having a polarity opposite to that of the first transfer roller 24. The second transfer roller 33 assists the toner to adhere firmly to the blank 4 by the principle of the opposite phase attraction.

Based on the same principle, in the present embodiment, the inner side of the sub-transfer belt 21 is provided with a charged third transfer roller 25 at a position below the exposure roller 113, and the third transfer roller 25 is charged. The polarity of the charge with the first transfer roller 24 is opposite. The third transfer roller 25 assists the transfer of the pattern on the exposure roller by the sub-transfer belt.

The upper surface of the sub-transfer belt shown in this embodiment is horizontally disposed, and may be inclined at a certain angle in practical applications. In this case, it is only necessary to mount the exposure roller on the oblique side of the sub-transfer belt. , also does not affect the transfer; when using other sides of the regular polygon, also use horizontal placement and a certain angle of installation.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are included in the spirit and scope of the present invention, should be included in the present invention. Within the scope of protection.

Claims

Architectural and decorative brick laser printing cloth equipment, including:

Printing mechanism: having a plurality of print head assemblies, which are arranged side by side between the plurality of print head assemblies for printing the color material onto the target;

a transfer belt mechanism: as a target of printing, disposed under the printing mechanism, having a transfer belt and a transfer belt driving mechanism for driving the transfer belt to operate;

Conveyor belt mechanism: a carrying and conveying mechanism as a blank, disposed under the transfer belt mechanism, having a conveyor belt for carrying the blank and a belt driving mechanism for driving the transfer belt;

It is characterized by:

The transfer belt mechanism includes a sub-transfer belt correspondingly disposed under each of the print head assemblies and a drive mechanism that independently drives each of the sub-transfer belts.
The architectural and decorative tile laser printing cloth apparatus of claim 1 wherein each of said printhead assemblies comprises:

The color material conveying bin has a hollow body, and a color material inlet and a color material outlet are arranged on the hollow body for storing and conveying the color material;

Magnetic roller: disposed at the color material outlet of the color material conveying bin, has a magnetic roller central axis rotating along the center thereof and a magnetic roller body sleeved on the central axis of the magnetic roller for adsorbing the color in the color material conveying bin material;

The exposure roller is disposed on the side of the magnetic roller, and has an exposure roller central axis rotating along the center thereof and an exposure roller body sleeved on the central axis of the exposure roller for exposing to form an exposure pattern region;

a charging roller: disposed adjacent to the exposure roller and tangentially disposed with the exposure roller, having a central axis of the charging roller rotating along the center thereof and a charging roller body sleeved on the central axis of the charging roller for charging the exposure roller;

LED exposure light source: is disposed above the exposure roller for exposing the exposure roller.
A construction and decorative tile laser printing cloth apparatus according to claim 2, wherein said sub-transfer belt is provided in a rounded regular polygonal shape.
The architectural and decorative tile laser printing cloth apparatus according to claim 3, wherein said sub-transfer belt has a horizontal plane at an upper portion thereof, and said sub-transfer belt disposed in a rounded regular polygon includes an odd number of sides.
A construction and decorative tile laser printing cloth apparatus according to claim 4, wherein said exposure roller is tangent to any one of the sub-transfer belts.
A construction and decorative tile laser printing cloth apparatus according to claim 5, wherein said sub-transfer belt driving mechanism comprises at least one driving wheel and/or a plurality of driven wheels, and a charged first transfer roller. The driving mechanism of the sub-transfer belt of the at least one driving wheel comprises at least one driving wheel and/or a plurality of driven wheels, and the charged first transfer roller will rotate The tape support becomes a regular polygon having an odd number of sides, wherein the charged first transfer roller is disposed at the bottom.
A construction and decorative tile laser printing cloth apparatus according to claim 6, wherein said inner side of said conveyor belt is disposed opposite to each of said first transfer rollers and has a polarity opposite to that of said first transfer roller. The second transfer roller.
The architectural and decorative tile laser printing and distributing device according to claim 7, wherein said sub-transfer belt has a third transfer roller with a charge disposed at a position below the exposure roller, said third The charge carried by the transfer roller is opposite to the polarity of the charge carried by the first transfer roller.