JPS60168657A - Cleaning method of color pipe in rotary screen printer - Google Patents

Abstract

PURPOSE:To exactly clean up a color pipe in a short time by supplying a cleaning water and compressed air into the color pipe through which color pastes are supplied, provided axially in the rotary screen, for cleaning. CONSTITUTION:A color pipe 7 is taken with a squeegee 6 from a rotary screen and a cleaning liquid prepared by mixing compressed air supplied from a compressed air source 24, e.g., compressor, etc., with washing water supplied from a water tank 23 through a pump 22 is supplied from the connecting port 21 into the color pipe 7 for cleaning. In the cleaning operation, the stopper 20 is removed out. The inside of the color pipe can thus be exactly cleaned up in a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for cleaning a color pipe for supplying color paste (hereinafter sometimes simply referred to as a color pipe) provided in the axial direction inside a rotary screen in a rotary screen textile printing machine. .

Background of the Invention In the field of rotary screen printing for textile printing, there has been a trend in recent years to produce a wide variety of products in small lots.
Color schemes are changing more frequently.

However, each time the pattern or color scheme is changed, the screen and color pipe must be removed from the machine and cleaned, and an efficient cleaning method is desired.

The conventional method of cleaning color pipes is to run water through them only, but since the color paste currently used tends to have a high viscosity, cleaning by running water can cause it to stick to the inner wall of the color pipe. It is difficult to completely remove the colored paste even if you wash it for a long time. Cleaning is also carried out by inserting a brush into the color pipe, but it is still not possible to clean it thoroughly, and the current situation is that the previous color is mixed into the next color arrangement, often resulting in poor printing.

OBJECTS OF THE INVENTION In view of the above-mentioned technical background, an object of the present invention is to provide a method for cleaning a color pipe that can be cleaned reliably in a short time.

Structure of the Invention According to the present invention, there is provided a color printing machine in which cleaning is performed by supplying compressed air together with cleaning water into a color pipe for supplying color paste provided in the axial direction inside a rotary screen of a rotary screen textile printing machine. A method of cleaning a pipe is provided.

The present invention will be described in detail below based on specific examples shown in the accompanying drawings.

Part 1 that simply shows the side layout of a rotary screen printing machine
In the figure, in this printing machine, a cloth to be printed 2 is supplied onto an endless belt 6 from a blood supply section 1. A tensioning agent is applied to the upper surface of the endless belt 6 by a tensioning device (not shown), and the endless belt 6 is continuously run by a driving row 24. That is, the cloth 2 to be printed is stuck on the endless belt 6 and continuously runs as one.

The endless dress belt 6 is driven in synchronization with the rotational speed of the rotary screen 15, and the cloth to be printed is printed by the rotary screen 5 and the scale.

Referring to FIG. 2, which shows a side cross section of the rotary screen 5, a color pipe 7 extends in the axial direction inside the rotary screen 5, and colored paste supply holes 7α are formed in the color pipe 7 at predetermined intervals along the length. It is formed in the direction. Further, the scale is fixed to the collar pipe 7 via a predetermined support member.

Color paste 8 is supplied with a suitable supply pump (not shown) during the printing process.
The color paste is supplied to the color pipe 7 through the color paste supply hole 7α, and is supplied to the inner surface of the rotary screen 5 and the back surface of the scaler through the color paste supply hole 7α, and thus continuous printing is performed by applying a predetermined printing pressure to the cloth to be printed 2. .

The printed fabric 2 that has been printed enters the fabric drying device 10 and is stored there after drying. The surface of the endless belt 6 is washed by a belt washing device 11 located at the bottom thereof (see Fig. 1).
.

Next, the cleaning method of the present invention will be explained with reference to FIG. 6 showing an enlarged cross-sectional view of the color pipe 7.

Both ends of the color pipe 70 are provided with a plug 20 at one end and a hose connection port 21 at the other end. When cleaning, the plug 20 is removed and a predetermined pipe is connected to the connection port 21 to supply cleaning water. will be carried out.

In the method of the present invention, cleaning water supplied from a water tank 26 using a pump 22 and a compression source 24 such as a compressor' are used.
The mixture is mixed with compressed air and supplied into the color pipe Z for cleaning.

In other words, since the compressed air expands in the cleaning water, the cleaning water is agitated and becomes a turbulent flow, which thoroughly reaches every corner of the collar pipe 7 and cleans it, resulting in a cleaning effect as shown in the example below. will increase dramatically.

Note that the pressure of the compressed air to be supplied depends on the water supply pump 22 used.
Although it varies depending on the water and the mixing position with the washing water, it is usually 1~
A range of 5 ky/d (gauge pressure) is preferred.

In addition, the supply piping used may be a normal commercially available hose made of rubber, PVC, polyester, etc., and has a pressure resistance of 5.
kg/ctrt” is sufficient.

Compressed air and cleaning water are mixed at connection port 2 of color pipe 7.
It is desirable to set the portion as close as possible to 1 in order to fully utilize the expansion force of compressed air.

According to the cleaning method of the present invention, it is possible to perform cleaning reliably in a short time, and it is possible to improve productivity and eliminate the product defect rate due to poor cleaning.

Example water pump Capacity 90t/min Pressure resistance 5kg/art
” was used to clean the color pipe using conventional water flow only.

The color pipe has an inner diameter of 46 m and a cylindrical length of 2.8 m, and the color paste used for coloring is starch-based and has a viscosity of 20 m.
,000 tpl. After running water for about 5 minutes, no dirt was found in the cleaning waste water, but when I brushed the inside of the color pipe, a large amount of colored glue was discharged, and an additional 2 to 3 minutes of water flushing was required. .

Using the same pump and collar pipe, as shown in Figure 6, compressed air adjusted to 2 kg/cIn'' (gauge pressure) is mixed with the cleaning water at a rate of 250/min (converted to atmospheric pressure), and the cleaning water is washed. After washing for about 1 minute, there was no dirt in the washing waste water, and after washing for another 1 minute, for a total of 2 minutes,
I brushed the inside of the pipe, but there was no discharge of colored paste.
Further, no dirt on the brush was observed at all.

[Brief explanation of the drawing]

Fig. 1 is a diagram schematically showing the side arrangement of the rotary screen textile printing machine, Fig. 2 is a diagram showing the internal structure of the rotary screen in Fig. 1, and Fig. 6 is a diagram showing the rotary screen used in the rotary screen in Fig. 2. FIG. 3 is a diagram showing an enlarged cross section of a color pipe. Layer number 1 is the blood supply section, 2 is the cloth to be printed, 6 is the endless belt, 4 is the drive roller, 5 is the rotary screen, 6 is the cage, 7 is the color pipe, 8 is the color paste, 20 is the stopper, 2
1 is a hose connection port, 22 is a pump, 26 is a water tank, and 24 is a compression source. Patent applicant: Toshin Kogyo Co., Ltd., patent attorney Ikuo Suzuki. Procedural amendment (spontaneous) April 5, 1981 Kazuo Wakasugi, Commissioner of the Patent Office 1, Indication of the case Patent Application No. 1983-23016 2, Name of the invention Method for cleaning color pipes in a rotary screen textile printing machine 3, Supplement 1F Relationship with the case of a person who makes a patent application Patent applicant 4, agent 〒105 5, No indication of amendment order 7, Contents of amendment ■ 6 Column for detailed explanation of the invention (+) Page 5, line 1 of the specification In line 4, the statement "In the method of the present invention, cleaning is performed." is corrected as follows. 0° In the method of the present invention, the color pipe 7 is removed from the screen 5, and the cleaning water supplied from the water tank 23 using the pump 22 and the compressed air source 24 such as a compressor are used.
The color pipe 7 is mixed with compressed air and supplied into the color pipe 7 for cleaning. (2) On page 6, line 11, correct the statement r20,0OOcps J to read F20,000cps (measured with a Rion VT-02 viscometer), l. (3) r250A in the 3rd line from the bottom of page 6! /minute speed”
Correct the statement to be the amount j of 1125 J'/min. 1 [, Column for brief description of drawings (+) On page 7, line 15 of the specification, it says, "24 indicates a compression source." r 24 indicates a compressed air source. ''. II+, Figure 2 (1) Figure 2 is corrected as shown in the appendix in red. Hereinafter, Figure 2 3.

Claims (1)

[Claims] (1) A method for cleaning a color pipe in a rotary screen textile printing machine, which comprises supplying compressed air together with cleaning water to a color pipe for supplying color paste provided in the axial direction inside a rotary screen.