CN112319054B

CN112319054B - Nozzle wiping device and ink-jet printing equipment

Info

Publication number: CN112319054B
Application number: CN202010987929.3A
Authority: CN
Inventors: 王冠明; 李奇; 周川堰; 辛文涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2022-05-10
Anticipated expiration: 2040-09-18
Also published as: CN112319054A

Abstract

The application relates to the technical field of display panel production, and discloses a nozzle wiping device and ink-jet printing equipment, wherein the nozzle wiping device comprises wiping cloth, an unwinding shaft, a winding shaft, an intermediate shaft, a wiping pad, a tension roller, a guide structure and a fixed seat; the unwinding shaft, the winding shaft, the intermediate shaft, the wiping pad and the guide structure are all arranged on the fixed seat; the new wiping cloth is arranged on the unwinding shaft and is connected to the winding shaft through the intermediate shaft, the wiping pad and the tension roller; the tension roller is arranged on the guide structure, and the tension roller is driven by the guide structure to move so as to change the tension of the wiping cloth. The tension of the wiping cloth is kept in an optimal state by adjusting according to the tension change of the unwinding shaft or the winding shaft, and the wiping cloth is prevented from loosening, so that the wiping cloth is utilized efficiently.

Description

Nozzle wiping device and ink-jet printing equipment

Technical Field

The application relates to the technical field of display panel production, in particular to a nozzle wiping device and ink-jet printing equipment.

Background

Because of their characteristics of lightness, flexibility and bending, OLED (Organic Light-Emitting Diode) display devices are now becoming the first choice for electronic devices such as high-end mobile phones, televisions, watches, and the like. At present, equipment and a process for manufacturing an OLED product by adopting an inkjet printing method are mature, and specifically, a material for manufacturing an OLED display substrate can be dissolved in an inkjet printing solvent to form inkjet printing ink, and the inkjet printing ink is sprayed onto a glass substrate through a nozzle in an inkjet printing device to print a pixel pattern. The spray head needs to be wiped clean after the spray head is used.

The existing nozzle wiping device can not adjust the tension, and wiping cloth can be loosened when the nozzle is wiped, so that the wiping cloth can not be efficiently utilized.

Disclosure of Invention

In view of the above-mentioned shortcomings, the present application aims to provide a nozzle wiping device and an inkjet printing apparatus, which prevent wiping cloth from loosening and efficiently utilize the wiping cloth.

In order to achieve the above purpose, the technical solution provided by the present application is: a nozzle wiping device comprises wiping cloth, an unwinding shaft, a winding shaft, an intermediate shaft, a wiping pad, a tension roller, a guide structure and a fixed seat; the unwinding shaft, the winding shaft, the intermediate shaft, the wiping pad and the guide structure are all arranged on the fixed seat; the wiping cloth is used for wiping the spray head, and the new wiping cloth is arranged on the unwinding shaft and is connected to the winding shaft through the intermediate shaft, the wiping pad and the tension roller; the tension roller is arranged on the guide structure, and the tension roller is driven by the guide structure to move so as to change the tension of the wiping cloth.

Furthermore, the spray head wiping device also comprises a position sensor and an induction sheet, wherein the position sensor is arranged on the fixed seat, and the position of the position sensor corresponds to the movement path of the guide structure; the sensing piece is arranged on the surface, facing the position sensor, of the tension roller.

Further, the position sensor comprises a first sensor and a second sensor, the first sensor is arranged on one side of the unwinding shaft, and the second sensor is arranged on one side of the winding shaft.

Furthermore, the fixing seat comprises a first vertical plate and a second vertical plate which are oppositely arranged, and the second vertical plate is of a detachable structure; the unwinding shaft and the winding shaft are fixed on the first vertical plate, and the intermediate shaft, the wiping pad and the guide structure are fixed on the second vertical plate.

Furthermore, the fixing seat comprises a locking cam and a base, the second vertical plate is fixed on the base through the locking cam, and the second vertical plate is fastened or detached through rotation of the locking cam.

Furthermore, the nozzle wiping device further comprises a locking sheet which is arranged on the unwinding shaft and the winding shaft, and the friction force between the wiping cloth and the unwinding shaft or the winding shaft is adjusted by adjusting the locking sheet.

Further, the nozzle wiping device further comprises an uncoiling motor and a coiling motor, wherein the uncoiling motor is connected to the uncoiling shaft, and the coiling motor is connected to the coiling shaft.

Further, the nozzle wiping device further comprises a magnetic coupling, the uncoiling motor is connected with the uncoiling shaft through the magnetic coupling, and the coiling motor is connected with the coiling shaft through the magnetic coupling.

Further, the intermediate shaft comprises baffle rings arranged at two tail ends of the intermediate shaft.

The technical scheme provided by the application is as follows: an inkjet printing apparatus includes a head device and the head wiping device as described above, by which the head device is cleaned.

Has the advantages that:

the utility model provides a wipe cloth in the use, the new on the axle of opening is wiped cloth and is used less more, and the old on the axle of winding is wiped cloth and is more and more, and the epaxial tension of opening axle and winding will become different, through set up a tension roller between axle of opening and the axle of winding, then the tension roller set up in guide structure is last, makes the tension roller follows guide structure removes, changes according to the tension of axle of opening or winding and adjusts for wipe cloth's tension keeps at the best state, prevents to wipe cloth not hard up, thereby the cloth is wiped to high-efficient the utilization.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a schematic view of an inkjet printing apparatus of an embodiment of the present application;

fig. 2 is a schematic view of the structure of a head wiping apparatus according to an embodiment of the present application;

FIG. 3 is a schematic view of another perspective structure of a head wiping apparatus according to an embodiment of the present application;

FIG. 4 is a schematic view of yet another perspective of a head wiping apparatus according to an embodiment of the present application;

FIG. 5 is a schematic view of a cross section of a locking tab of an embodiment of the present application;

fig. 6 is a schematic view of another cross-section of the locking tab of an embodiment of the present application.

100, a spray head wiping device; 101. wiping cloth; 102. unwinding the reel; 103. a winding shaft; 104. an intermediate shaft; 105. a wiping pad; 106. a tension roller; 107. a guide structure; 108. a fixed seat; 109. a position sensor; 110. a first sensor; 111. a second sensor; 112. an induction sheet; 113. a first vertical plate; 114. a second vertical plate; 115. locking the cam; 116. an uncoiling motor; 117. a winding motor; 118. a magnetic coupling; 119. a baffle ring; 120. a locking piece; 200. a nozzle device; 300. an ink jet printing apparatus.

Detailed Description

It is to be understood that the terminology, the specific structural and functional details disclosed herein are for the purpose of describing particular embodiments only, and are representative, but that the present application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.

In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as implicitly indicating the number of technical features indicated. Thus, unless otherwise specified, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "plurality" means two or more. The terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that one or more other features, integers, steps, operations, elements, components, and/or combinations thereof may be present or added.

Further, terms of orientation or positional relationship indicated by "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, are described based on the orientation or relative positional relationship shown in the drawings, are simply for convenience of description of the present application, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.

Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, fixed connections, removable connections, and integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

The application relates to producing an OLED display panel by an ink-jet printing technology.

The application is further described with reference to the drawings and alternative embodiments.

As shown in fig. 1, an embodiment of the present application discloses an inkjet printing apparatus 300 including a head device 200 and a head wiping device 100, wherein the head device 200 is cleaned by the head wiping device 100. As shown in fig. 2 to 4, the nozzle wiping device 100 includes a wiping cloth 101, an unwinding shaft 102, a winding shaft 103, an intermediate shaft 104, a wiping pad 105, a tension roller 106, a guide structure 107 and a fixing seat 108; the unwinding shaft 102, the winding shaft 103, the intermediate shaft 104, the wiping pad 105 and the guide structure 107 are all arranged on the fixed seat 108; the wiping cloth 101 is used for wiping a spray head, and the new wiping cloth 101 is arranged on the unwinding shaft 102 and is connected to the winding shaft 103 through the intermediate shaft 104, the wiping pad 105 and the tension roller 106; the tension roller 106 is arranged on the guide structure 107, and the tension roller 106 is driven by the guide structure 107 to move, so that the tension of the wiping cloth 101 is changed.

In the application, when the wiping cloth 101 is used, the less new wiping cloth 101 on the unwinding shaft 102 is used, the more old wiping cloth 101 on the winding shaft 103 is used, the tension on the unwinding shaft 102 and the winding shaft 103 becomes different, and by arranging a tension roller 106 between the unwinding shaft 102 and the winding shaft 103, and then arranging the tension roller 106 on the guide structure 107, the tension roller 106 can move along with the guide structure 107 and adjust according to the tension change of the unwinding shaft 102 or the winding shaft 103, so that the tension of the wiping cloth 101 is kept in the optimal state, the wiping cloth 101 is prevented from being loosened, and the wiping cloth 101 is used efficiently.

Specifically, the middle shaft 104 is symmetrically arranged on both sides of the wiping pad 105; the intermediate shaft 104 includes baffle rings 119 disposed at both ends of the intermediate shaft 104. The wiping pad 105 provides a supporting force for the wiping cloth 101, the tension of the wiping cloth 101 to the spray head is increased when the spray head is wiped, the wiping effect is better, then the wiping cloth 101 is tensioned on two sides of the wiping pad 105 through the middle shaft 104, the wiping cloth 101 is tightly attached to the wiping pad 105, the wiping cloth 101 is prevented from being wrinkled, the utilization rate of the wiping cloth 101 is reduced, and the symmetrical arrangement enables the tensioning forces on two sides of the wiping cloth 101 on the wiping pad 105 to be more uniform; during the operation of the unwinding shaft 102 and the winding shaft 103, the stop rings 119 at the two ends of the middle shaft 104 limit the wiping cloth 101 on the middle shaft 104, so as to prevent the wiping cloth 101 from sliding out of the side of the middle shaft 104 and even falling off, thereby improving the stability of the nozzle wiping device 100 during operation.

The fixing seat 108 includes a first vertical plate 113 and a second vertical plate 114, which are oppositely disposed, and the second vertical plate 114 is a detachable structure; the unwinding shaft 102 and the winding shaft 103 are fixed on the first vertical plate 113, and the intermediate shaft 104, the wiping pad 105 and the guiding structure 107 are fixed on the second vertical plate 114. The unwinding shaft 102 and the winding shaft 103 and other structures are respectively arranged on the two vertical plates, when the wiping cloth 101 is used up and needs to be replaced, the whole nozzle wiping device 100 does not need to be detached, the second vertical plate 114 only needs to be detached, the structure on the second vertical plate 114 can be detached, and only the unwinding shaft 102 and the winding shaft 103 are left, so that a larger space can be vacated to replace the wiping cloth 101, and the wiping cloth 101 can be replaced more conveniently.

Specifically, the fixing seat 108 includes a locking cam 115 and a base, the second vertical plate 114 is fixed on the base through the locking cam 115, and the second vertical plate 114 is fastened or detached by rotating the locking cam 115. The distance from the point on the side length of the cam to the rotation center is long or short, when the second vertical plate 114 is locked, the point farthest away from the rotation center of the cam is rotated to be abutted to the second vertical plate 114, the second vertical plate 114 is abutted and fixed, when the second vertical plate 114 is to be detached, the cam is rotated by 90 degrees, the point closest to the rotation center is abutted to the second vertical plate 114, namely, the second vertical plate 114 is loosened, so that the detaching device can be detached easily, the detaching device of the second vertical plate 114 is simpler, more convenient and faster, the replacement of wiping paper is simpler, more convenient and faster, and no tool is needed.

Further, the winding device further comprises an unwinding motor 116, a winding motor 117 and a magnetic coupling 118, wherein the unwinding motor 116 is connected to the unwinding shaft 102 through the magnetic coupling 118, and the winding motor 117 is connected to the winding shaft 103 through the magnetic coupling 118. The motor drives the unwinding shaft 102 and the winding shaft 103 to work, so that the wiping cloth 101 is wound and unwound more uniformly, stably and accurately, the position precision during stopping is improved, the wiping cloth 101 can be utilized more efficiently, and the labor force is saved; the motor and the scroll are connected through the magnetic coupling 118, the scroll and the motor are connected through the non-contact magnetic coupling 118, friction is not generated, dust is not generated, and the magnetic coupling is suitable for being connected with a shaft to transmit torque in a clean environment; and need not rely on the instrument when needs are dismantled, it is more simple and convenient.

Furthermore, the nozzle wiping device 100 further includes a position sensor 109 and a sensing piece 112, wherein the position sensor 109 is disposed on the fixed seat 108 and corresponds to the moving path of the guiding structure 107; the sensing piece 112 is disposed on a surface of the tension roller 106 facing the position sensor 109. The position sensor 109 includes a first sensor 110 and a second sensor 111, the first sensor 110 is disposed on the unwinding shaft 102 side, and the second sensor 111 is disposed on the winding shaft 103 side. The position of the tension roller 106 is monitored by arranging a position sensor 109 at each of the unwinding shaft 102 and the winding shaft 103, so that the amount of the clean wiping cloth 101 can be known, then the position sensor 109 is connected with the unwinding motor 116 and the winding motor 117 through a control board, and the rotating speeds of the unwinding motor 116 and the winding motor 117 and the tension adjustment of the tension roller 106 can be controlled through the information monitored by the position sensor 109, so that the winding speed is consistent, the wiping cloth 101 is prevented from loosening, and the wiping effect and the utilization rate of the wiping cloth 101 are improved. And a reminding module is arranged in the nozzle wiping device 100, and when the new wiping cloth 101 is monitored to be used up, the nozzle wiping device 100 is stopped and an operator is reminded to replace the new wiping cloth.

In one embodiment, as shown in fig. 5 and 6, a locking piece 120 is disposed on the unwinding shaft 102 and the winding shaft 103, and the friction between the wiping cloth 101 and the unwinding shaft 102 or the winding shaft 103 is adjusted by adjusting the locking piece 120. The friction force between the shaft wheels, namely the upper limit of the tension of the wiping cloth 101, can be increased or reduced by adjusting the bending radius of the locking piece 120, and the height of the locking piece 120 on the shaft can be adjusted when the working tension of the wiping cloth 101 needs to be adjusted, so that the wiping cloth 101 is prevented from loosening, and the wiping effect and the utilization rate of the wiping cloth 101 are improved.

The foregoing is a more detailed description of the present application in connection with specific alternative embodiments, and the present application is not intended to be limited to the specific embodiments shown. For those skilled in the art to which the present application pertains, several simple deductions or substitutions may be made without departing from the concept of the present application, and all should be considered as belonging to the protection scope of the present application.

Claims

1. A nozzle wiping device is characterized by comprising wiping cloth, an unwinding shaft, a winding shaft, an intermediate shaft, a wiping pad, a tension roller, a guide structure, a fixed seat, a position sensor, an induction sheet and a locking sheet;

the unwinding shaft, the winding shaft, the intermediate shaft, the wiping pad and the guide structure are all arranged on the fixed seat;

the wiping cloth is used for wiping the spray head, and the new wiping cloth is arranged on the unwinding shaft and is connected to the winding shaft through the intermediate shaft, the wiping pad and the tension roller;

the tension roller is arranged on the guide structure and drives the tension roller to move through the guide structure, so that the tension of the wiping cloth is changed;

the spray head wiping device further comprises a position sensor and an induction sheet, wherein the position sensor is arranged on the fixed seat, and the position of the position sensor corresponds to the movement path of the guide structure; the sensing sheet is arranged on the surface, facing the position sensor, of the tension roller;

the position sensor comprises a first sensor and a second sensor, the first sensor is arranged on one side of the unwinding shaft, and the second sensor is arranged on one side of the winding shaft;

the locking piece is arranged on the unwinding shaft and the winding shaft, and the friction force between the wiping cloth and the unwinding shaft or the winding shaft is adjusted by adjusting the locking piece.

2. The spray head wiping device according to claim 1, wherein the fixing seat comprises a first vertical plate and a second vertical plate which are oppositely arranged, and the second vertical plate is a detachable structure;

the unwinding shaft and the winding shaft are fixed on the first vertical plate, and the intermediate shaft, the wiping pad and the guide structure are fixed on the second vertical plate.

3. The spray head wiping device according to claim 2, wherein the fixing seat comprises a locking cam and a base, the second vertical plate is fixed on the base through the locking cam, and the second vertical plate is fastened or detached by rotating the locking cam.

4. The nozzle wiping device according to claim 1, further comprising an unwinding motor and a winding motor, wherein the unwinding motor is connected to the unwinding shaft, and the winding motor is connected to the winding shaft.

5. The nozzle wiping device according to claim 4, further comprising a magnetic coupling, wherein the unwinding motor is connected to the unwinding shaft by the magnetic coupling, and the winding motor is connected to the winding shaft by the magnetic coupling.

6. The head wiping apparatus according to claim 1, wherein the intermediate shaft includes baffle rings provided at both distal ends of the intermediate shaft.

7. An ink jet printing apparatus comprising a head device and a head wiping device according to any one of claims 1 to 6, the head device being cleaned by the head wiping device.