CN215917958U

CN215917958U - Automatic cleaning nozzle of printing plate

Info

Publication number: CN215917958U
Application number: CN202122031328.8U
Authority: CN
Inventors: 许校彬; 张德剑; 邹康军; 邵勇; 樊佳
Original assignee: Huai'an Techuang Technology Co ltd; Huizhou Techuang Electronic Technology Co ltd
Current assignee: Huai'an Techuang Technology Co ltd; Huizhou Techuang Electronic Technology Co ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2022-03-01
Anticipated expiration: 2031-08-26

Abstract

The utility model provides an automatic cleaning nozzle of a printing plate, which comprises an inner part and an outer part, wherein the inner part comprises a movable piston, a spring and a channel for moving the piston and the spring; the piston and the spring are arranged in the channel, and the piston is connected with the spring. The utility model can automatically clean the channel inside the nozzle through the corresponding design of the inside and the outside, so that the nozzle can keep normal work without being blocked, the branch pipe and the nozzle do not need to be taken down for cleaning, and the problem of incomplete film removal during operation can be solved.

Description

Automatic cleaning nozzle of printing plate

Technical Field

The utility model relates to the field of nozzles, in particular to an automatic cleaning nozzle for a printing plate.

Background

The biggest problems encountered during the wet treatment of printing plates are the frequent clogging, sometimes partial, sometimes total, of the nozzles, which results in lost production and the product is often scrapped. For example, the most likely clogging of conventional nozzles is the post-etch stripping process, and the dry film residue still causes clogging of conventional nozzles despite the addition of a screen and a recirculation filter system. When more nozzles are blocked, the problem of incomplete film removal in one operation can be caused. In addition, the remaining dry film is also carried to the next cleaning stage. In this case, a large amount of production time is wasted in removing the unusable spray tube or in unclogging the clogged spray nozzle. Cleaning of nozzles clogged with alkaline etching equipment is often required before the chemical solution is cooled, but this also causes a series of troubles to the health and safety of the operator before the chemical solution is cooled. For many years, print board manufacturers have permitted a certain amount of rework to scrape and wipe boards that are due to nozzle failure. However, as the complexity of the board increases, the risk of scraping and wiping the board by a large amount becomes more and more obvious.

Therefore, there is a high necessity for a self-cleaning nozzle having a simple structure to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide an automatic cleaning nozzle of a printing plate.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

an automatic cleaning nozzle for a printing plate comprising an interior and an exterior, wherein the interior comprises a movable piston, a spring, and a channel for movement of the piston and the spring; the piston and the spring are arranged in the channel, and the piston is connected with the spring.

As a further improvement of the utility model: the passageway has a rebound position for movement of the piston and a spray position.

As a further improvement of the utility model: the piston is in a fully open state in the rebound position.

As a further improvement of the utility model: the piston is in an aperture state at the spraying position.

As a further improvement of the utility model: the channel is in communication with a nozzle opening of the self-cleaning nozzle.

As a further improvement of the utility model: the outer portion has an outer shell for protecting the inner portion.

As a further improvement of the utility model: the upper part of the shell is in a thread shape.

As a further improvement of the utility model: the lower part of the shell is conical, and the bottom of the lower part is a nozzle opening.

As a further improvement of the utility model: the automatic cleaning nozzle for the printing plate is applied to the wet processing process of the printing plate.

Compared with the prior art, the utility model has the beneficial effects that:

through the corresponding design of inside and outside, can self-cleaning nozzle inside passageway, make the nozzle keep normal work and do not block up, and need not take off branch pipe and nozzle and clean, can overcome the not thorough problem of striping when moving simultaneously.

Drawings

Figure 1 is a schematic view of the piston of the present invention in a rebound position.

Fig. 2 is a schematic view of the piston of the present invention in the spray position.

Detailed Description

The utility model will now be further described with reference to the accompanying description and examples:

referring to fig. 1 to 2, an automatic cleaning nozzle for a printing plate comprises an inner part and an outer part, wherein the inner part comprises a movable piston 1, a spring 2 and a channel 3 for movement of the piston 1 and the spring 2; the piston 1 and the spring 2 are arranged in the channel 3, and the piston 1 is connected with the spring 2.

The plug of the piston 1 is designed into a hook shape and is used for changing the shape of the original channel 3 when the piston is pressed down to the spraying position, so that the channel 3 close to the nozzle opening 5 is suddenly narrowed, the cross section of the channel 3 at the position is changed, and the pressure at the position is increased.

A spring 2 is connected to the piston 1, the spring 2 providing the piston 1 with a spring force for movement in the channel 3. And a layer of telescopic protective film 4 is arranged on the periphery of the spring 2 to protect the spring 2 from being corroded by liquid fluid in the channel 3.

The channel 3 is a traditional cylindrical channel 3, the joint of the bottom of the channel and the nozzle opening 5 is also designed to be a cone which is adapted to the bottom, and the channel 3 is a cone channel 3 which is wide at the top and narrow at the bottom.

As shown in fig. 1 to 2, the channel 3 has a rebound position for movement of the piston 1 and a spray position.

The rebound position of the channel 3 is at the cylindrical channel 3 at the upper part of the channel 3; the spraying position of the channel 3 is at the conical channel 3 at the bottom of the channel 3, where it communicates with the nozzle opening 5.

According to fig. 1, the piston 1 is shown in a fully open position in a rebound position.

According to fig. 2, the piston 1 is in the state of an aperture at the spraying position. The aperture state is that the piston 1 moves to the position where the bottom of the channel 3 is communicated with the nozzle opening 5, so that the original cross section area of the nozzle opening 5 is reduced and the state is changed into the aperture.

As shown in fig. 1 to 2, the passage 3 communicates with the nozzle opening 5 of the self-cleaning nozzle.

According to the illustrations of fig. 1 to 2, the outer part has a housing 6 for protecting the inner part.

As shown in fig. 1 to 2, the upper portion of the housing 6 is threaded.

Referring to fig. 1 to 2, the lower part of the housing 6 is conical and the bottom of the lower part is the nozzle opening 5.

Detailed description of the utility model:

the total force of the fluid in the channel 3 and the piston 1 with the spring 2 connected in the channel 3 is as follows:

F_S=F_X-F_V

F_Sis the overall stress; f_XIs the elastic force of the spring 2; f_VIs fluid force;

F_Xk is the elastic coefficient, x is the distance moved, which is itself a fixed value within the channel 3.

F_v=v²S ρ, the principle here is as follows:

f = dP/dt = dmv/dt, where dP denotes impulse, v denotes velocity, m denotes mass, and t denotes time.

Since v is unchanged for the minute time that the water impacts the pipe wall, the original expression can be reduced to F = v (dm/dt).

Since dm = v dt S ρ, where S denotes the actual inner cross section of the tube and ρ denotes the liquid density. Then F = v × S × ρ can be derived. Further, the pressure P = v ρ can be calculated.

And from the actual situation in the channel 3 it follows:

when F is present_X>F_VWhen the force of the spring 2 is greater than the force of the fluid in the passage 3, the spring 2 will gradually retract until a threshold value is reached, the spring 2 returns to its original position, and the piston 1 returns to its rebound position with the spring 2.

When F is present_X<F_VWhen the pressure of the spring 2 is smaller than the force of the fluid in the channel 3, the spring 2 and the piston 1 are gradually pressed down by the impact of the fluid until a critical value is reached, and at the moment, the piston 1 moves to a spraying position.

Therefore, the utility model can change the elastic coefficient of the spring 2, namely, the selected spring 2 is used, the adaptive springs 2 of different types can be selected for nozzles of different types for matching, and the stress in the channel 3 is adjusted by changing the size of the cross section of the channel 3, so that the piston 1 moves in a set parameter range, and the purposes of automatically adjusting the flow rate of the fluid in the channel 3 and automatically cleaning are achieved.

Under the normal working condition, the nozzle opening 5 of the nozzle generally sprays out fine slag, and if the spray head is blocked, the automatic cleaning nozzle of the scheme can perform the following processes:

when the spraying device works normally, the piston 1 is pressed down to a spraying position, and at the moment, the nozzle sprays out fine slag in a general mode;

when the nozzle is blocked, the piston 1 snaps back into its rebounded position and, as the passage 3 changes, forms a corresponding opening to flush the particles causing the blockage out of the nozzle. According to fig. 1, the piston 1 is shown in a fully open position in a rebound position.

When the blocked particles are not blocked any more, the piston 1 returns to the spraying position again to continue normal work.

The automatic cleaning nozzle has simple and reasonable design structure, is not easy to block after work, can be easily cleaned by using a flushing mode, does not need to take down the branch pipe and the nozzle completely, and improves the processing reliability.

In addition, the best results were obtained with a self-cleaning nozzle of 2 liters/min during chemical treatment and intensive water washing. While most of the water washing section is performed with 1 liter/minute nozzles. Thus, the automatic cleaning nozzle of the scheme is designed to use water with excellent effect under the condition that the standard nozzle requires 60% of flow.

Finally, the liquid flow is proportional to the nozzle opening. Compared with the common nozzle, the automatic cleaning nozzle can effectively carry out water leaching when the flow rate is lower than 1 liter/minute, thereby greatly reducing the amount of discharged liquid and reducing the consumption of water consumption.

The working principle of the utility model is as follows:

the movement of the piston 1 in the channel 3 is adjusted through the change of the stress, so that the size of the cross section of the channel 3 through which the fluid flows is adjusted, the size of the flow is finally adjusted, and the aim of automatic cleaning is fulfilled.

First, the initial parameters, i.e. the flow rate of the fluid, i.e. the flow velocity and the spring 2 with a certain spring constant, are set.

When the piston 1 is in the rebound position, the flow rate is maximum, and F is caused by the fact that the flow rate exceeds the parameter range_X<F_VThe spring 2 reduces the flow rate as the piston 1 is depressed, reducing the cross-sectional area of the fluid during the depression, and eventually depresses to the spray position where the flow rate is at a minimum.

The cross-sectional area and the flow rate of the fluid at the spraying position are minimum, so that the nozzle opening 5 is easily blocked, after the blockage, the flow rate is smaller than the minimum value of the initially set parameter value, and at the moment F_X>F_VThe spring 2 begins to retract gradually, the cross section area of the fluid is increased gradually in the retraction process, the blockage is impacted out, the channel 3 is smooth and is not blocked any more, and when the flow rate is larger than the maximum value of the set initial parameter, the flow rate is enabled to be F_X<F_VThe above process is repeated, so that the nozzle can be kept clean and smooth all the time in the working process and cannot be blocked.

The main functions of the utility model are as follows: a self-cleaning structure for use in the nozzle area, particularly in the wet processing of printing plates.

In summary, after reading the present disclosure, those skilled in the art can make various other corresponding changes without creative mental labor according to the technical solutions and concepts of the present disclosure, and all of them are within the protection scope of the present disclosure.

Claims

1. An automatic cleaning nozzle for printing plates comprising an interior and an exterior, characterized in that said interior comprises a movable piston, a spring and a channel for movement of said piston and said spring; the piston and the spring are arranged in the channel, and the piston is connected with the spring.

2. An automatic cleaning nozzle for a printing plate as recited in claim 1 wherein said passage has a rebound position for movement of said piston and a spray position.

3. An automatic cleaning nozzle for printing plates, according to claim 2, characterized in that said piston is in a fully open position in said rebound position.

4. An automatic cleaning nozzle for printing plates as claimed in claim 2 wherein said piston is in the form of an aperture at said spray position.

5. An automatic cleaning nozzle for a printing plate according to claim 1, wherein said passage communicates with a nozzle opening of said automatic cleaning nozzle.

6. An automated printing plate cleaning nozzle according to claim 1, wherein said outer portion has a housing for protecting said inner portion.

7. An automatic cleaning nozzle for printing plates, according to claim 6, characterized in that the upper part of said housing is threaded.

8. An automatic cleaning nozzle for printing plates, according to claim 6, characterized in that the lower part of said housing is conical and the bottom of said lower part is the nozzle opening.