JPH08276564A - Automatic rotary screen printer and screen washing method - Google Patents

Abstract

PURPOSE: To improve register accuracy in the lateral direction of an endless belt and to eliminate pattern shift in the laterial direction by a method wherein all of the elements of a printer are provided so as to be inclined by a definite angle in the lateral direction of the endless belt and a guide with which the lower side end of a carrier part comes into contact and color paste is injected into a rotary screen from high side end of the carrier part. CONSTITUTION: All of a rotary screen, an endless belt 2 feeding a fabric to be printed, a printing table 20, the roller on the start end side of the endless belt, the roller 4 on the terminal side of the endless belt or the like are inclined high on the side oposite to the operation side of a printer. A guide 21 with which the lower side end of a carrier part comes into contact is provided and the stopper 18 and bar 19 holding a roller squeegee 17 to a definite position are also inclined. As a result, the endless belt 2 is always pushed in a lower direction to be prevented from meandering. A color paste injection pipe 11 is connected to the high part of the rotary screen 1 to inject color paste by a pump 13 to prevent the stagnation of the color paste to prevent the generation of printing irregularity and color density irregularity.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic rotary screen printing machine, more specifically, one or a plurality of rotary screens arranged in parallel at predetermined intervals, an endless belt for conveying a cloth to be dyed, which extends in a predetermined direction below the rotary screens. A printing table, which is arranged to face the rotary screen under the presence of a carrier portion of the belt, and a starting end side roller and an end side roller of the belt on which at least one is driven by stretching the endless belt, are included as constituent elements. The present invention relates to an automatic rotary screen printing machine.

[0002]

2. Description of the Related Art Conventionally, an automatic rotary screen printing machine of this type is a horizontal type in which the above-mentioned components are arranged horizontally.

In a horizontal rotary screen printing machine,
It is known to those skilled in the art that meandering of the endless belt for conveying the cloth to be dyed may cause instability in matching accuracy in the cloth width direction or cause misalignment in the cloth width direction. It is also known to those skilled in the art that uneven dyeing and unevenness in color due to supplying color paste to a horizontal rotary screen are caused.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the meandering of an endless belt for conveying a cloth to be dyed, improve the matching accuracy in the cloth width direction, or eliminate the pattern deviation in the cloth width direction.
It is also intended to eliminate uneven coloring and uneven coloring.

Another object of the present invention is to solve the above problems of the prior art, regardless of whether the present invention tilts the rotary screen in a predetermined direction together with the other components described above.
The rotary screen is installed on the textile printing machine and water is poured into the textile screen, so that the cleaning can be efficiently performed without stains around the rotary screen due to the outflow of the cleaning wastewater. If the rotary screen can be washed without being removed from the textile printing machine, unlike the case where the rotary screen is detached and washed, there is no damage to the rotary screen caused by accidentally hitting the textile machine frame or the like, and the washing is easy.

In a rotary screen printing machine, color change is often performed, and pattern change is sometimes performed. In such cases, the removal and installation of the rotary screen, squeegee, etc., the work of applying the cloth to be dyed to the surface of the endless belt, the initial supply of the cloth to be dyed, etc. should be done more horizontally with respect to the inclined members. Obviously it is easier to target.

Another object of the invention is to allow a tilted arrangement of the components shown above, in a way that ensures that these tasks are easy to carry out.

[0008]

A feature of the present invention is that one or a plurality of rotary screens are arranged in parallel at predetermined intervals, and the cloth to be dyed is conveyed below the rotary screen in a direction orthogonal to the axis of the rotary screen. Endless belt,
A printing table arranged to face the rotary screen under the interposition of a carrier portion of the belt, a start end side roller and a end side roller of the belt on which at least one is driven by stretching the endless belt are included as constituent elements. In the automatic rotary screen textile printing machine, the following points are taken.

All of the above-mentioned components are arranged at a certain angle with respect to the horizontal plane in the width direction of the endless belt, and a guide with which the lower side end of the carrier portion of the endless belt comes into contact is provided, and the rotary screen is provided on the high side. Make sure to supply the color glue from the edge of the.

Alternatively, the frame of the printing machine equipped with the above-mentioned components can be tilted with respect to the horizontal plane in the width direction of the endless belt, and the endless belt is attached to the back surface thereof and extends or is parallel to the belt length direction. A guide groove and guide rail formed on the peripheral surface of the start end side roller and the end side roller of the endless belt in which the guide member is movably fitted are included as constituent elements, or a guide including the guide member and guide groove as constituent elements. By means of the means, the progress is restrained straight, and the rotary screen is adapted to inject the color paste from the end of the machine frame on the side which becomes higher in the tilted state.

[0011]

DETAILED DESCRIPTION OF THE INVENTION The present invention will now be described with reference to the drawings showing the embodiments of the present invention.

Throughout the drawings, the same reference numerals indicate the same parts.

One embodiment of the present invention is shown in FIGS. 1 to 3, and another embodiment is shown in FIGS.

In the examples shown in FIGS. 1 to 3, the rotary screens 1 arranged in parallel at a predetermined interval, and the endless for conveying the cloth to be dyed 5 extending in the direction orthogonal to the axis of the rotary screen below the parallel body of the rotary screens. The belt 2, the printing table 20 arranged to face the rotary screen under the interposition of the carrier part of the endless belt 2, the endless belt is stretched, and at least one of the belt is driven to start and end rollers 3 and 4 of the belt. , Endless belt 2
The roller 6 that presses the cloth to be dyed 5 on the carrier portion of the endless belt, the roller 7 that supports the lower surface of the return portion of the endless belt 2, and the like in the width direction of the endless belt 2 are operated by the printing machine (see FIG.
The left side) and the other side are inclined at a high angle to the horizontal plane. The inclination is generally in the range of 5 to 25 degrees with respect to the horizontal plane, and more preferably in the range of 15 to 20 degrees. The rotary screen 1 may include only one unit.

A guide 21 is provided with which the lower side end of the carrier portion of the endless belt 2 comes into contact. The guide may be a non-rotating type (Figs. 1 and 2) or a roller type (Fig. 13) that rotates in contact.

A stopper 1 for holding the roller squeegee 17 arranged in the rotary screen 1 in a fixed position.
8. The bar 19 which is fitted with the stopper and extends in the longitudinal direction of the rotary screen 1 is also inclined corresponding to the inclination of the rotary screen 1. The stopper 18 is attached to the bar 19 through a member 190 extending in the lengthwise direction of the screen 1 in the longitudinal direction thereof and integrally connected to the bar 19.

The cloth 5 to be dyed is attached to the carrier portion of the endless belt 2 in the same manner as in the conventional case, and the rotary screen 1
And is automatically printed by the rotary screen 1. This in itself is no different from that of a conventional horizontal machine.

When the endless belt 2 is inclined in the width direction thereof, the component force of gravity acting in the vertical direction of the endless belt 2 acts toward the lower inclination according to the inclination angle of the belt 2. For this reason, the endless belt 2 is constantly pushed to a lower inclination during traveling, and the horizontal endless belt is guided by the guide 21 with which the lower side end of the carrier portion of the endless belt 2 comes into contact. Unlike the belt, it does not meander.

Therefore, when a plurality of rotary screens 1 are arranged side by side, the accuracy of matching in the cloth width direction is accurately maintained. With only one rotary screen, there is no pattern displacement in the cloth width direction.

When the rotary screen 1 is inclined, the color paste is injected from the high end of the rotary screen 1 so that the color paste does not stay in the rotary screen unlike the conventional horizontal type machine. In accordance with the inclination of the rotary screen 1, the bottom of the rotary screen 1 flows to the lower side, and new color paste is constantly supplied to the bottom of the rotary screen. Therefore, unlike a horizontal type machine, uneven dyeing and unevenness of color do not occur.

In the example shown in FIGS. 4 to 16, a textile machine equipped with a rotary screen 1, an endless belt 2, a roller 4 at the starting end of the belt 2, a roller 3 at the end of the belt 2, a printing table 20, and rollers 6 and 7. The frame 100 is inclined with respect to the horizontal plane in the width direction of the endless belt 2.

The tilting of the machine casing 100 in this manner can take the form shown in FIG. 5 or the form shown in FIG.

In FIG. 5, the textile machine frame 100 is pivotally attached to the leg base 210 at one end side in the width direction of the endless belt 2 by a shaft 211 so as to be rotatable in a vertical plane in the width direction of the belt 2 and at the other end side. A shaft 213 is pivotally mounted on a vertically movable pedestal 212 in a vertical plane in the width direction of the belt 2. The pedestal 212a that supports the pedestal 212 can be filled with a fluid pressure, for example, a hydraulic cylinder type expandable / contractible type (FIG. 5) or a screw jack type lifting mechanism (FIGS. 14 and 15). The lower end of the pillar 212a is pivotally attached to the base 214 by a shaft 215 and is rotatable in the same direction as the above. A plurality of screw jack type lifting mechanisms shown in FIGS. 14 and 15 are arranged side by side in the length direction of the belt 2. The threaded rod which is the pedestal 212a of those mechanisms does not rotate, and the member which forms the nut to be screwed with this is the worm wheel 212b. Line shaft or drive shaft 2
12c extends in the length direction of the belt 2 and the shaft 212
The worm wheel 212b meshes with the worm 212d coupled to the fixed position on c, and is rotated by the rotation of the shaft 212c, so that the pedestal 212a moves up or down. The shaft 212c is driven by a motor M through a timing belt or a sprocket type transmission mechanism T. The worm wheel 212b and the worm wheel 212d are built in a casing c, a shaft 212c is supported by the casing c, and a lower end portion of the casing c is pivotally attached to the base 214 by the shaft 215. The transmission mechanism T is configured to maintain a constant tension by a tension pulley or a tension roller R. The tension pulley or tension roller R is supported by the tip of the swing arm a and eliminates the slack of the transmission mechanism T by a method known per se such as by spring biasing.

In FIG. 16, a printing machine frame 100 is pivotally mounted on a pedestal 220 at the center by a shaft 221 in a vertical plane in the width direction of the belt 2. Machine frame 1 in the form of Fig. 16
00 is configured to be tilted or horizontal by a screw jack type lifting mechanism 222.

A guide member 30 extending in the length direction of the belt 2 or a guide member 31 arranged in parallel is attached to the back surface of the endless belt 2 on the tiltable machine frame 100. A V-belt (FIG. 6A) is attached to the guide member 30, and the guide member 3
1 can be filled with rollers (FIG. 6B).

The printing machine frame 100 is provided with guide rails 32 extending or arranged in parallel in the lengthwise direction of the endless belt 2 at a fixed position over substantially the entire length of the parallel body of the printing table 20. The guide member 30 or 3
1 is movably addicted. The extended form of the guide rail 32 is shown in FIG. 9, and the parallel form is shown in FIG. When the rotary screen 1 is provided with one unit, the printing table 20 is also provided with one unit. In this type, the guide rail 32 extends over a range corresponding to the size of the one printing table 20 in the lengthwise direction of the belt 2. In some cases, the guide rail 32 may be omitted.

The guide member 3 is provided on the peripheral surfaces of the rollers 3 and 4.
Guide grooves 30 'and 31' are provided at portions corresponding to 0 and 31, and the guide members 30 and 31 are provided in the guide grooves 30 'and 31'.
31 is movably fitted.

4 to 16 show the textile machine frame 100 equipped with the rotary screen 1, the endless belts 2, the rollers 3, 4 and the textile printing table 20, which are the main components of the textile printing machine. And the guide member 30 or 31 attached to the back surface of the endless belt 2 as described above, and the guide groove 30 'or 31' provided on the circumferential surfaces of the rollers 3 and 4, as guide means for the endless belt 2. 1-3 are substantially the same as those shown in FIGS. 1 to 3 except that the guide rail 32 mounted on the printing machine frame 100 or the guide member 30 or 31 and the guide groove 30 'or 31' is used. Same as above.

Therefore, in the example shown in FIGS. 4 to 16, by tilting the machine frame 100 so that the endless belt 2 and the rotary screen 1 are tilted, the same result as that described above with reference to FIGS. Be successful. 4-16
In order to prevent the endless belt 2 from meandering, the guide member 30 or 31 and the guide groove 30 'or 31' and the guide rail 32 or the guide member 30 or 31 and the guide groove 30 'or 31' are used. Can be obtained at.

In this type of guide means, the guide member is fitted in the guide groove and the guide rail or in the guide groove to positively restrain the straight movement of the endless belt 2. For this reason, the meandering of the endless belt 2 is sufficiently effective. Avoidance of meandering of the belt 2 is better in the case of the guiding action of the guide member, the guide groove and the guide rail.

Guide member 3 to the back of the endless belt 2
The arrangement of 0 and 31 and the arrangement of the guide grooves 30 'and 31' with respect to the peripheral surfaces of the rollers 3 and 4 are the belt 2 end portion and the rollers 3 and 4 end portion which become higher when the machine frame 100 is inclined. Is preferred. According to this, when the endless belt 2 and the rotary screen 1 are tilted and the endless belt 2 is advanced, the straight advance of the endless belt 2 is restrained by the high end of the inclined endless belt 2. Thus, avoiding meandering of the endless belt 2 becomes more effective.

In the present invention, in any of the above-mentioned aspects,
The color glue may be injected into the high end of the rotary screen 1 with the following specifications. In any of the aspects, the following modifications or additions may be made. In the following, regarding the configuration in which the machine frame 100 including the main components of the textile printing machine such as the rotary screen 1 can be tilted, the high side or the high end side of the rotary screen 1 and other members is referred to as the low side or the low end side. Indicates a state in which main components such as the rotary screen 1 are inclined.

A specification in which a color paste injection pipe 11 is connected to the high side of the rotary screen 1 and the color paste is injected into the high side end of the rotary screen 1 through the pipe 11. Machine frame 100
In the type that can be tilted, prior to the injection of color glue,
Keep it tilted. The pipe 11 has a tank 14 by a pump 13
Color paste is sent from.

A color glue recovery pipe 10 is preferably connected to the lower side of the rotary screen 1. Pipe 10 is pump 12
The lower end of the rotary screen 1 has one end communicating with the bottom of the screen 1 and the other end connected to the color glue injection pipe 11. By doing so, the color paste is supplied to the rotary screen 1 in a mode in which the color paste circulates through the pipe 11, the rotary screen 1, and the pipe 10 and a new color paste is supplied from the tank 14. Therefore, the color paste held in the rotary screen 1 can easily maintain the viscosity and the fluidity unchanged, and the leveling property can be obtained.

It is advisable to connect the washing water injection pipe 8 to the end on the high side of the rotary screen 1 and the washing wastewater collecting gutter 9 to the end on the low side. This leads to the following advantages.

The washing water is passed through the pipe 8 to the rotary screen 1
While injecting into the high end side (in this case, if the machine frame 100 can be tilted, tilt this in advance),
Alternatively, the rotary screen 1 and the endless belt 2 may be injected from time to time to drive the rotary screen 1
Can be effectively cleaned. Since the squeegee 17 also operates when the rotary screen 1 rotates, the squeegee 17 contributes to cleaning the rotary screen 1. Therefore, the rotary screen 1 is inclined, and fresh cleaning water always flows through the bottom of the rotary screen 1, and efficient cleaning can be performed. The squeegee 17 also cooperates with the table 20 to help drain the wash water. Draining is highly efficient when the squeegee 17 is a magnetic body and the table 20 is a magnet type. In the illustrated example, the squeegee 17 is a roller squeegee, but instead of this, it is also possible to use an elastic squeegee such as a rubber plate or a thin metal plate.

Since the cleaning wastewater flowing out from the lower end side of the rotary screen 1 is collected in the gutter 9, the cleaning wastewater does not fall from the rotary screen to the floor and scatter around to stain the area around the printing machine. Therefore, it is possible to wash on the textile printing machine without removing the rotary screen.

The rotary screen 1 includes the screen 1
It is preferable to add a water injector 81 which extends the inside in the lengthwise direction thereof and extends over substantially the entire length of the screen 1 or at least in the end region on the higher side of the screen 1. A water supply pipe 83 is connected to the water injector 81. With this addition, the rotary screen 1 can be cleaned under the supply of cleaning water by pouring water into the rotary screen 1 by the water injector 81 as needed, and the cleaning effect can be improved.

In the water injector 81, the bar 19 described above may be hollow, and a hole 82 may be formed over substantially the entire length of the peripheral wall of the bar 19 or at least at the end on the higher side to fill the bar. . According to this, the bar 19 for mounting the stopper 18 also serves as the water injector 81, and the addition of the water injector 81 makes it possible to structurally simply inject the cleaning water.

If necessary, in the present invention, a sensor 22 for detecting the color glue level on the lower end side bottom portion of the rotary screen 1 is provided, and the color glue inside the bottom portion is detected based on the sensor 22 for detecting the color glue level inside the bottom portion. The operation of the pump 13 can be controlled by a method known per se so that the color paste supply amount becomes appropriate for a constant level.

In the present invention in which the textile machine frame 100 equipped with the rotary screen 1, the endless belt 2, the table 20, the rollers 3 and 4 and the like can be tilted, these textile printing machine components in the tilted state are It can be in a horizontal position together with the machine casing 100. For this reason, in the case of color changes that are often performed in rotary screen printing machines, pattern changes that are sometimes performed, removal and installation work of the rotary screen and squeegee etc. required and the work of applying the cloth to be dyed adhesive to the surface of the endless belt. The initial feeding operation of the cloth to be dyed and the like can be easily performed while the constituent elements are in the horizontal position. That is, a tilted arrangement of the components shown above can be achieved in a manner that guarantees that these operations are performed easily.

[0042]

As is apparent from the above description, the present invention eliminates the meandering of the endless belt, accurately maintains the matching accuracy in the cloth width direction, and eliminates the pattern deviation in the cloth width direction. It is possible to eliminate uneven dyeing and uneven color density, and regardless of the tilting of the rotary screen, water is poured into the rotary screen while it is still on the textile printing machine. There is an effect that the rotary screen can be efficiently cleaned without being contaminated.

Further, the rotary screen and the squeegee and the like required for the color change and the pattern change, which are often performed in the rotary screen printing machine, and the work for attaching and applying the cloth to be dyed to the endless belt. It is possible to arrange members such as a rotary screen, an endless belt, a textile printing table, a starting end side roller and an end side roller of the endless belt in a slanted manner in such a manner that an initial supply operation of the cloth to be dyed is easily performed.

[Brief description of drawings]

FIG. 1 is a front view showing an example of an embodiment of an automatic rotary screen textile printing machine according to the present invention of claim 1.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a sectional view taken along line III-III of FIG.

FIG. 4 is a front view showing another embodiment of the automatic rotary screen printing machine according to the present invention.

5 is a sectional view taken along line VV of FIG.

6 (A) is a drawing showing an example of a guide member and a guide rail in the textile printing machine shown in FIG. 4, and FIG. 6 (B) is a drawing showing another example.

7 is a sectional view taken along line VII-VII of FIG.

FIG. 8A is an example of the guide groove of the start end side roller and the end side roller of the endless belt together with the example of the guide member, and FIG. 8B is a guide of these rollers together with the other example of the guide member. It is drawing which shows the other example of a groove | channel.

9 is a sectional view taken along line IX-IX in FIG. 5 together with an example of a guide rail.

FIG. 10 is a cross-sectional view showing another example of the guide rail.

11 is a sectional view taken along line XI-XI of FIG.

FIG. 12 is an enlarged sectional view taken along line XII-XII in FIG. 9.

FIG. 13 is a perspective view showing a modified example of a belt guide.

FIG. 14 is a side view showing a modified example of a pillar.

FIG. 15 shows a right side view of FIG.

FIG. 16 is a side view showing another example in which the machine frame of the textile printing machine can be tilted.

[Explanation of symbols]

1 Rotary Screen 2 Conveying Cloth Endless Belt 21 Guide 3 Endless Belt Starting Roller 4 Endless Belt End Roller 8 Cleaning Water Injection Pipe 81 Cleaning Water Injector 82 Hole 9 Cleaning Wastewater Collection Gutter 10 Color Glue Recovery Pipe 11 Pipe for injecting colored glue 12, 13 Pump 14 Colored glue tank 17 Roller squeegee 18 Stopper for holding roller squeegee in a fixed position 19 Hollow bar 30, 31 Guide member 30 ', 31' Guide groove 32 Guide rail 100 Printing machine machine Frame 210 Leg base 212 Pedestal 220 Pedestal 222 Push-up mechanism

Claims (9)

[Claims] 1. One or a plurality of rotary screens arranged in parallel at predetermined intervals, an endless belt for conveying a cloth to be dyed, which extends below the rotary screen in a direction orthogonal to an axis of the rotary screen, and a carrier portion of the belt. An automatic rotary screen printing machine including a printing table arranged to face the rotary screen with an interposition, a start end side roller and an end side roller of the belt around which the endless belt is stretched and at least one of which is driven, as constituent elements. In, all of those elements are arranged at a constant angle with respect to the horizontal plane in the width direction of the endless belt,
An automatic rotary screen printing machine characterized in that a guide is provided so that the lower side end of the carrier part of the endless belt comes into contact, and the rotary screen is adapted to inject color paste from the end on the higher side. 2. The automatic rotary screen printing machine according to claim 1, wherein a washing water injection pipe is connected to a high side end of the inclined rotary screen, and a washing wastewater collecting gutter is connected to a low side end of the inclined rotary screen. An automatic rotary screen characterized in that a color glue recovery pipe having one end communicating with the bottom of the rotary screen is provided, and the other end of the recovery pipe is connected to a pipe for injecting color glue to the high end of the rotary screen. Printing machine. 3. A washing water injector for pouring washing water into the rotary screen, which extends in the inner direction of the rotary screen in the lengthwise direction thereof and is poured into the entire length or at least the end of the screen on the higher side. Automatic rotary screen printing machine. 4. A hollow bar peripheral wall, which is provided with a stopper for holding the roller squeegee in a fixed position and extends in the longitudinal direction of the rotary screen in the inner space thereof,
3. An automatic rotary screen textile printing machine according to claim 2, further comprising a wash water pouring device, wherein a hole is bored at least at the end on the higher side and a water supply pipe is connected to the inner space of the bar. 5. One or a plurality of rotary screens arranged in parallel at predetermined intervals, an endless belt for conveying a cloth to be dyed, which extends below the rotary screen in a direction orthogonal to an axis of the rotary screen, and a carrier portion of the belt. An automatic rotary screen printing machine including a printing table arranged to face the rotary screen with an interposition, a start end side roller and an end side roller of the belt around which the endless belt is stretched and at least one of which is driven, as constituent elements. In, the printing machine frame equipped with these components is tiltable with respect to the horizontal plane in the width direction of the endless belt, and the endless belt extends or is arranged in parallel in the belt length direction attached to the back surface of the belt. Guide member, start end side and end of the endless belt, into which the guide member is movably fitted The guide means including the guide groove and the guide rail formed on the peripheral surface of the end side roller as a constituent element or the guide member including the guide member and the guide groove as a constituent element is straightly restrained from advancing. An automatic rotary screen textile printing machine, wherein the screen is configured to inject color paste from the end of the machine frame on the side where the machine frame is raised in a tilted state. 6. The automatic rotary screen textile printing machine according to claim 5, wherein a washing water injection pipe is connected to an end of the rotary screen on a higher side, and a washing wastewater collecting gutter is connected to an end of the opposite side. An automatic rotary screen textile printing machine, characterized in that a colored glue recovery pipe having one end communicating with the bottom of the rotary screen is provided, and the other end of the recovery pipe is connected to a pipe for injecting colored glue into the rotary screen. 7. A rotary water screen is further provided with a cleaning water pouring device that extends in the lengthwise direction of the rotary screen and that pours the cleaning water into the entire length of the screen or at least the end region on the higher side of the screen. 5. The automatic rotary screen printing machine according to item 5. 8. A hollow bar peripheral wall, which is provided with a stopper for holding the roller squeegee in a fixed position and extends in the longitudinal direction in the inner space of the rotary screen, over substantially the entire length, or at least on the higher side. Make a hole at the end,
6. The automatic rotary screen printing machine according to claim 5, further comprising a washing water pouring device having a water supply pipe connected to the inner space of the bar. 9. One or a plurality of rotary screens arranged in parallel at predetermined intervals, an endless belt for conveying a cloth to be dyed, which extends below the rotary screen in a direction orthogonal to an axis of the rotary screen, and a carrier portion of the belt. An automatic rotary screen printing machine including a printing table arranged to face the rotary screen with an interposition, a start end side roller and an end side roller of the belt around which the endless belt is stretched and at least one of which is driven, as constituent elements. In, the printing machine machine frame equipped with these components is tiltable with respect to the horizontal plane in the width direction of the endless belt, and under the tilting posture of the machine frame, wash water is supplied from the end on the high side of the rotary screen. Inject to clean the rotary screen and collect the cleaning wastewater from the lower end of the rotary screen into a collecting trough A screen cleaning method for an automatic rotary screen textile printing machine, characterized by discharging.