JPH09254364A - Printing apparatus and printing roll - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the rate of operation of a printing apparatus by automatically correcting positional shift X.Y.Z before the start of printing. SOLUTION: Mark detecting sensors 21, 22 are arranged at the mark passing positions of the left and right end parts of a printing roll 13 and the detection time lag (t) of the left and right marks detected by the sensors 21, 22 is calculated by a time lag calculation element 14 and the time lag signal 16 transmitted from the time lag calculation element is transmitted to an axis drive device 17 to change the axial direction of the printing roll. The change of the light and shade of the left and right single side parts across the scanning lines 25 of the sensors continued to the rotary direction of the printing roll 13 among the light and shade of the marks detected by the sensors 21, 22 is operated by a light and shade change operation element 24 and the light and shage change signal 26 transmitted from the element 24 is transmitted to an axis moving device 27 to move the printing roll in its axial direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing apparatus for transferring an image engraved on the peripheral surface of a print roll onto a substrate.

[0002]

2. Description of the Related Art In a printing apparatus for transferring various images, a plurality of print rolls 1 corresponding to the number of colors of an image 53 are used.
3 ・ 13 ′ ......... are arranged. In order to detect and correct the positional deviation of the image transferred from each print roll, marks 51 for facilitating the positional deviation are attached to the left and right end portions of the peripheral surface of each print roll and transferred to the base material 55. When the marks 51 of the respective print rolls are overlapped with each other and the marks 51 are not accurately overlapped with each other, the print roll 13 is moved back and forth and left and right to correct the positional deviation. .

This positional deviation is caused by a discrepancy in the rotational phase Y between the plural print rolls due to the discrepancy in the rotational direction of the rotational phase reference lines passing through the centers of the marks 51 of the plural print rolls arranged in parallel in the printing apparatus, and the printing. Due to the misalignment of the width side X of a plurality of print rolls caused by the discrepancy in the axial direction of the screen side edge reference line passing through the center of the roll mark 51, and the mismatch of the rotational phase reference line passing through the center of the left and right mark 51 of the print roll. Three types of misalignment with the twist misalignment Z that occurs for each print roll occur in combination.

In order to correct the rotational phase shift Y, a mark 50 is attached to the mounting member 43 at the end of each print roll, and a sensor 49 for detecting the mark 50 is provided for each print roll in the main body of the printing apparatus. A motor 47 and a clutch 48 for individually rotating each print roll are provided for each print roll, and due to the difference in time when the print roll rotates and the rotation phase reference line passing through the center of the mark 50 passes through the sensor 49, The sensor 49 detects a discrepancy in the rotational phase between the print rolls, and the sensor 4
The detection signal 30 from 9 is transmitted to the motor 47 and the clutch 48 to automatically adjust the rotation angle of each print roll individually.

In order to correct the width deviation X, the left and right brackets 18 that rotatably support the left and right ends of the print roll.
・ 19 (28 ・ 29) are connected by the connecting rod 23, and the left and right brackets 18 ・ 19 on which the print roll is mounted
(28 and 29) are integrated so that they can be manually moved in the axial direction of the print roll.

In order to correct the twist misalignment Z, one of the brackets 19 (29) is supported by a moving member 46 that moves in the rotational direction of the print roll, and is manually operated in the conveying direction of the substrate 55 passing through the printing apparatus. The moving member 46 can be moved.

On the peripheral surface of the end of the print roll, there are two kinds of marks, a mark 51 called a register mark for detecting the positional deviation and an ink mark 52 for confirming the color of the ink transferred from the print roll. Are attached, and the graphics of those marks are shown in the image 5 of the screen 31 of the print roll.
As with No. 3, it is transferred to the base material 55. The figure of the register mark 51 is usually a “circle mark” in which “+” is surrounded by “○”, and the imprint 54 of the register mark 51 of each print roll that is transferred from a plurality of print rolls and overlaps with each other. The positional deviations X, Y, and Z can be found by the non-coincidence of the positional deviations X, Y, and Z. The positional deviations X, Y, and Z are corrected while visually checking the degree of overlap of the imprint 54 of the register mark 51.

Incidentally, the rotational phase shift Y is automatically adjusted by the mark 50 and the sensor 49 on the mounting member 43, and when the rotational phase shift Y is found due to the mismatch of the imprint 54 of the register mark 51, the rotational phase shift Y is detected for each print roll. The individual motors 47 and clutches 48 can be manually turned on and off to individually rotate the print rolls for fine adjustment.

[0009]

The pattern matching work of the print image 53 by the positional deviation correction is performed every time the print rolls attached to the printing apparatus are switched. This is because the twist misalignment Z is caused by the engraving accuracy of the image provided on the peripheral surface of the print roll, and the degree of the twist misalignment Z varies depending on the print rolls that are mounted on the printing apparatus. Further, the rotational phase deviation X and the width deviation Y are also caused by a slight mechanical play between the print roll to be replaced and the main body of the printing apparatus, and the degree of the mechanical play is not constant and the print roll is replaced each time. Because it will change.

The pattern matching operation is performed while visually confirming the shadow 54 of the register mark transferred to the base material, and thus requires skill, and the shadow 54 of the register mark of a plurality of print rolls is required.
It takes a considerable amount of time to arrange the prints neatly, and the pattern matching work accompanying the changing of the print rolls is a major factor in lowering the operating rate of the printing apparatus. Then, if a misalignment is found after the start of printing, all the printed substrates are lost.

In order to solve such a problem, a sensor for detecting the shadow of the mark transferred to the base material is provided in the printing apparatus to detect the positional deviation, and the clutch 48, the bracket 18, etc. are detected by the signal from the sensor. Drive
Attempts have been made to automatically correct the misalignment. However, the sensing accuracy of the sensor depends on the material of the base material 55 and the imprint 54.
The position shift may not be accurately detected because it depends on the color of. Further, since the printing apparatus is a production facility that operates at high speed, in the position shift detection method that looks at the printed base material, considerable base material loss occurs until the position shift is corrected, and particularly expensive cloth Is not suitable for a printing device that prints.

[0012]

SUMMARY OF THE INVENTION Therefore, according to the present invention, a sensor detects variations in the positions and shapes of the marks 51 and 52 provided on the peripheral surface of the print roll, not by the mark imprint 54 of the mark transferred to the substrate. The motor 47, the clutch 48, the brackets 41, 42, the bracket moving member 43, etc. are driven by a signal from the sensor to automatically correct the positional deviation X, Y, Z before starting the printing to improve the operating rate of the printing apparatus. The purpose is to

That is, no matter how elaborately the print roll or printing device is made, or even if the print roll is changed with a high degree of skill, the pattern is changed every time the print roll is changed. As a result of diligent research in view of the fact that alignment work must be performed, we determined that a cause of misalignment occurred in the process of engraving an image on the print roll, and found that the misalignment that occurred during the image engraving process The factor is detected on the peripheral surface of the print roll which is replaced by the printing device, and the motor 47, the clutch 48, the brackets 41, 42, the bracket moving member 43, etc., which have been manually operated in the past, are automatically operated to solve the problem. To do.

More specifically, in the print roll 13 which is, for example, a mesh cylinder 44, a masking film 45 showing an image 53 is wound around the mesh cylinder 44, a dissolving agent is applied to the surface thereof, and the masking film 45 is covered. The image portion 53 of the mesh cylinder exposed without being dissolved is removed, and an ink permeable mesh hole is engraved (etched) in the image portion 53, and the gears necessary for attaching to the main body of the printing apparatus are provided at both ends of the mesh cylinder. It is manufactured by mounting a mounting member 43 such as a bearing or a bearing.

The mesh cylinder 44 and the mounting member 4
Concavities and convexities 41 and 42 are attached to the joint portions of 3 so that their rotation axes coincide with each other.
The mounting member 43 is mounted on the mesh cylinder 44 by fitting 42 together, but no matter how delicately the print rolls made by matching the rotational axes of these meshes with each other are used, the positional deviation occurs, which causes the positional deviation. Due to the positional deviation of the masking film 45 when it is wound around the mesh cylinder 44, it also occurs when the image portion 53 to be dissolved and removed is drawn on the masking film 45 after being wound around the mesh cylinder 44.

[0016]

A printing apparatus according to the present invention solves the above-mentioned problems. (A) A print roll 1 having marks 11 and 12 at the left and right ends of its peripheral surface.
3 and (b) the print roll 13 is rotated to be set at a position where the left and right marks 11 and 12 pass, and the left and right sensors 21 and 22 for detecting the left and right marks,
(C) Left and right sensors 21 and 22 are left and right marks 11
The time difference calculation element 14 for calculating the time difference (t) when 12 is detected, and (d) the sensor 11 which is in the shadow of the marks 11 and 12 detected by the sensors 21 and 22 and which continues in the rotation direction of the print roll 13. A shadow change calculation element 24 for detecting a change in the shadow on one of the left and right sides with the scanning line 25 as a boundary;
(E) Time difference signal 16 transmitted from the time difference calculation element 14
An axial center driving device 17 for changing the axial direction of the print roll in accordance with the above, and (f) an axial center moving device 27 for moving the print roll in the axial direction in accordance with the shadow change signal 26 transmitted from the shadow change computing element 24 Is the first feature.

A second feature of the present invention is that, in addition to the first feature described above, the shadow change calculation element 24 is scanned by the sensor in the shadow of the mark detected by the sensor and in the rotation direction of the print roll. This is to be an area calculation element for detecting the amount of change ΔA of the area A of the shadow on the left and right sides of the line 25 as a boundary.

A third feature of the present invention is that, in addition to the first feature described above, the shadow change calculation element 24 of the sensor, which is in the shadow of the mark detected by the sensor, continues in the rotation direction of the print roll 13. This is to be an area calculation element that detects the amount of change ΔL in the length L of the shadow on one of the left and right sides of the scanning line 25.

A fourth feature of the present invention is that, in addition to the features of any one of the first to third features, the print roll is a printing mesh cylinder roll, and the mark is drawn by the blocked ink permeable mesh hole. Especially.

A fifth feature of the present invention is that, in addition to the features of any of the first to fourth features, at least one of the left and right marks 11 (12) faces in the same direction as the axis of the print roll. The point L is formed in a pointed shape and the length L of the mark 11 (12) in the rotational direction of the print roll is gradually shortened toward one side in the axial direction of the print roll.

A sixth feature of the present invention is that, in addition to the features of any of the first to fifth features, at least one of the left and right marks (11, 12) has a triangular shape.

Therefore, the printing cylinder roll 13 according to the present invention has the marks 11 and 12 drawn by the ink permeable mesh holes on the left and right ends of the peripheral surface, and the mesh holes of the marks are closed, and The mark has a pointed shape in the same direction as the shaft center of the print roll, and the length L of the marks 11 and 12 in the rotation direction of the print roll 13 is gradually shortened toward one side in the shaft center direction of the print roll 13. The first characteristic is that

The second characteristic of the textile printing cylinder roll 13 according to the present invention is, in addition to the above-mentioned first characteristic, a mark 11.1.
2 is in the shape of a triangle.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 2 illustrates a mounting position of one print roll 13 among a plurality of print rolls arranged in parallel in a printing apparatus. The print roll 13 is detachably attached to the bracket via ring bearings 40 attached to both ends thereof. The left and right brackets that support both ends of the print roll 13 are respectively the first bracket 18 and the second bracket.
The two brackets are separated from the brackets 28 and 29, and the left and right first brackets 18 and 19 are connected and integrated by a connecting rod 23. Second bracket 28/29
Is fitted to the connecting rod 23 so as to be slidable in the length direction of the connecting rod 23 and fixed by screwing.
The number 0 is attached to the second brackets 28 and 29.

The left and right first brackets 18 are supported by a width direction moving member 46 driven by a screw bolt 39 installed in parallel with the shaft center of the print roll 13. The screw bolt 39 rotates according to the shadow change signal 26 transmitted from the shadow change calculation element 24. The width direction moving member 46 is driven by the screw bolt 39, and the first brackets 18 and 19 are integrated to form the print roll 13.
Move in the width direction.

The other left and right first brackets 19 are supported by a rotational direction moving member 34 driven by a screw bolt 35 installed with its length direction oriented in a direction perpendicular to the axis of the print roll 13. The screw bolt 35 is
It rotates according to the time difference signal 16 transmitted from the time difference calculation element 14, and when it rotates, the first bracket 19 on one side received by the rotation direction moving member 34 moves in the conveying direction of the substrate 55 passing through the printing apparatus. Print roll 13
The inclination of the axis of the changes.

A rail 36 parallel to the axial direction of the print roll 13 is interposed between the first bracket 19 on one side and the rotating direction moving member 34, and the width direction moving member 4 is provided.
When the 6 moves, the first bracket 19 also connects the connecting rod 2
3 is moved in the width direction along with the other first bracket 18 while being connected to the rail 3.

The print roll shown in FIG. 2 is a printing mesh cylinder roll, and the ink supply pipe 38 penetrates through the inside thereof. Gears 37 are attached to both ends of the print roll 13, and a plurality of all the print rolls 13, 13 '...
...... rotate in synchronism with the main shaft via intermediary gears 33 provided individually. A clutch 48 is interposed between each print roll 13 and the drive shaft. Therefore, if the clutch 48 is disengaged, the print rolls can be individually rotated by the adjusting auxiliary motors 47 provided for the respective print rolls.

On the peripheral surface of the print roll, at the same time as the image 53 of the design or pattern to be printed on the base material,
12 is engraved on the outside of the edge 32 of the screen 31. The marks 11 and 12 may be ink marks 52 or register marks 51, but they may be engraved separately from them.
Preferably, the length L is gradually shortened toward the left and right sides of the print roll 13 in the axial direction, and is more preferably a triangular shape.

At the position where the print roll 13 rotates and the left and right marks 11 and 12 pass, the mark 1 passing therethrough
Sensors 21 and 22 that detect 1 and 12 are installed. The time difference calculation element 14 calculates the difference (t) between the time when the left sensor 21 detects the left mark 11 and the time when the right sensor 22 detects the right mark 12 and calculates the time difference (t) as Accordingly, the screw bolt 35 is rotated to change the inclination of the shaft center of the print roll 13. This time difference (t) may be counted by a pulse of an encoder which is transmitted after one of the left and right sensors 21 and 22 detects the mark.

At least one of the left and right sensors 21
(22) is the scanning line 2 of the sensor following the rotation direction of the print roll 13 in the shadow of the detected mark 11 (12).
The change in the shadow on the left and right sides on the boundary of 5 is detected by the shadow change calculation element 24, and the shadow change calculation element 24 changes the screw bolt 39 according to the change amount ΔA (ΔL). It rotates and moves in the width direction of the print roll 13.

Reference numeral 49 is a sensor for detecting a mark 50 attached to the mounting member 43 at the end of the print roll. The motor 47 and the clutch 48 provided for each print roll are the marks 5 of the mounting members detected by the sensors 49.
The rotation phase reference line passing through the center of 0 operates according to the difference in the time when it passes through the sensor 49, and each sensor 21 (2
The mark 11 (2 on the peripheral surface of each print roll detected by 2)
The rotational phase reference line passing through the center of 1) is the sensor 21 (2
It is designed to operate depending on the difference in the passing time of 2). Therefore, the rotational phase shift Y can be corrected by the sensor 49 which detects the mark 50 of the mounting member 43 when the print roll is replaced, and also when the pattern is aligned thereafter, the mark 11 (21) on the peripheral surface can be corrected. ) Can be corrected by the sensor 21 (22).

[0033]

DETAILED DESCRIPTION FIG. 3 is a diagram showing the left and right end mark portions attached to a print roll in a left-right correspondence with two mark marks, a register mark 51 and an ink mark 52, at the left and right ends. Is attached. 15E and 15F
Is a rotational phase reference line parallel to the axis of the print roll passing through the centers of the left and right register marks 51E and 51F, and the distance t between them indicates the twist deviation Z.

The time difference (t) when the left and right sensors 21 and 22 sense the left and right mark rotational phase reference lines 15E and 15F is calculated by the time difference calculation element 14, and the time difference signal 16 transmitted from the time difference calculation element 14 is calculated. Accordingly, the screw bolt 35 rotates, the first bracket 19 moves together with the rotation direction moving member 34, the inclination of the shaft center of the print roll 13 changes, and the twist deviation Z (t) is corrected.

20 passes through the center of the register mark 51,
It is a screen side edge reference line following the rotation direction of the print roll. Reference numeral 25 is a scanning line of the sensors 21 and 22 that scans the circumferential surface of the print roll along the rotation direction, and indicates the installation position of the sensors 21 and 22. Screen side edge reference line 2
The distance between 0 and the scanning line 25 indicates the width deviation X.

The distance between the screen side edge reference line 20 and the scanning line 25 detected by the sensor 21, or one side of the scanning line 25 (either left or right) protrudes in the shadow of the mark 51. The area A ′ of the portion is calculated by the shadow change calculation element 24,
The screw bolt 39 rotates in accordance with the shadow change signal 26 transmitted from the shadow change calculation element 24, and the width direction moving member 4 is moved.
6, the first brackets 18 and 19 move in the width direction,
The width deviation X is corrected.

In the print roll shown in FIG. 4, a positional deviation X.
Rectangular exclusive marks 11 and 12 for detecting Y and Z are attached. The special marks 11 and 12 are the register marks 51.
Unlike the ink mark 52 and the ink mark 52, masking is applied so that ink does not adhere. Rotation phase reference line 15E
And 15F pass through the center of the register marks 51E and 15F and the upper edge of the special marks 11 and 12.

When there is no width deviation, the screen side edge reference line 20
Since the scanning line 25 and the scanning line 25 coincide with each other, the width deviation X is 1
Increase or decrease in the area A ′ of the portion protruding to one side (either left or right) of the scanning line 25 in the shadow of 1, that is, the area of the shadow of the mark 11 bisected by the screen side edge reference line 20. A and mark 11
Is calculated as a difference ΔA from the area A ′ of a portion protruding to one side (either left or right) of the scanning line 25 in the shadow of the first bracket 18 according to the shadow change signal 26 of the shadow change calculation element 24. 19 moves in the width direction, and the width deviation X is corrected.

FIG. 5 shows the peripheral surface of the print roll in which the special mark 11 is a right triangle. The orthogonal side of this right triangle is 15E on the rotation phase reference line.
And the other side is orthogonal to the rotational phase reference line 15E,
The hypotenuse is inclined with respect to the rotational phase reference 15E. Therefore, in this case, the width deviation X is the distance (X) between the scanning line 25 and the screen side edge reference line 20 and the scanning line 25 shaded by the mark.
In addition to the change amount ΔA of the area A ′ of the portion protruding to one side of the screen, the rotation phase reference line 15E to the screen side edge reference line and the mark 1
It can be detected by the change amount ΔL of the distance L ′ to the intersection with the hypotenuse 1.

The dedicated mark 11 thus masked
When 12 is attached to the print roll, this is masked and is not printed on the substrate,
The accuracy of detecting the positional deviation of the sensor is not affected by the ink adhering thereto, and the dedicated mark can be lengthened in the rotation direction of the print roll to detect the variation in the width deviation.
In particular, as shown in FIG. 5, a pointed shape is formed in the same direction as the axis of the print roll, and a length L in the rotation direction is L.
In the special mark 11 that is gradually shortened toward the one side in the axial direction, it can be understood that the hypotenuse of the right-angled triangle becomes longer than the other two sides that are orthogonal to each other. Sensor 2
The detection accuracy of 1 is improved.

In the present invention, the special mark 11 is formed on the print roll itself at the same time as the image 53 regardless of the mark 50 attached to the mounting member 43 at the end of the print roll.
Since the rotational phase shift Y is detected and automatically corrected by the rotational phase reference line 12 of 12, it is not necessary to look at the register mark 51 and perform pattern matching.

The exclusive mark of the printing mesh cylinder roll shown in FIGS. 4 and 5 is masked so that ink does not seep out. Such masking is marked by mesh holes at the same time as the image. Masking tape is attached to the inside of the specially designed mesh cylinder. Although the present invention is specifically described with a screen-printing mesh cylinder roll, the present invention also applies to gravure print rolls, offset print rolls and other print rolls as long as an image and a mark are engraved at the same time. As applied, the invention is thus not limited to screen printing mesh cylinder rolls.

[0043]

As described above, according to the present invention, it is known that the cause of the positional deviation of the image appearing on the printed substrate occurs during the image engraving process of the print roll. The change in the position of the shadow of the mark on the left and right ends of the print roll is checked by the sensor on the mark itself engraved on the print roll, regardless of the imprint on the transferred substrate, and the detected position Since the deviations X, T, and Z are automatically corrected, there is no time loss due to pattern alignment work due to print roll replacement and no base material loss due to test printing, improving the operating rate of the printing device and the yield of base materials. INDUSTRIAL APPLICABILITY The present invention is extremely practical for printing an expensive printing cloth produced in a small lot.

[Brief description of drawings]

FIG. 1 is an assembled perspective view of a textile mesh cylinder roll.

FIG. 2 is a perspective view of a printing apparatus according to the present invention.

FIG. 3 is a main part surface view of a textile printing mesh cylinder roll according to the present invention.

FIG. 4 is a main part surface view of a textile printing mesh cylinder roll according to the present invention.

FIG. 5 is a main part surface view of a textile printing mesh cylinder roll according to the present invention.

FIG. 6 is a cross-sectional perspective view of a main part of a textile printing mesh cylinder roll.

[Explanation of symbols]

 11 Mark 13 Roll 14 Time Difference Calculation Element 15 Rotation Phase Reference Line 16 Time Difference Signal 17 Shaft Center Drive Device 18 First Bracket 19 First Bracket 20 Screen Side Edge Reference Line 21 Sensor 22 Sensor 23 Connecting Rod 24 Shade Change Calculation Element 25 Scanning Line 26 Shade Change Signal 27 Shaft Center Moving Device 28 Second Bracket 29 Second Bracket 30 Signal 31 Screen 32 Edge 33 Intermediary Gear 34 Rotation Direction Moving Member 35 Screw Bolt 36 Rail 37 Gear 38 Ink Supply Pipe 39 Screw Bolt 40 Bearing 41 Concavo-convex 42 unevenness 43 mounting member 44 mesh cylinder 45 film 46 width direction moving member 47 motor 48 clutch 49 sensor 50 mark 51 dragonfly mark 52 ink mark 53 image 54 imprint 55 base material

Claims (6)

[Claims] 1. A print roll (13) having (a) marks (11, 12) at left and right end portions of a peripheral surface, and (b) a print roll (13) rotated to provide left and right marks (11.1).
2) is set at the position where the two pass, and the marks (1
Left and right sensors (21.2) to detect
2) and (c) a time difference calculation element (14) for calculating a time difference (t) when the left and right sensors (21, 22) detect the left and right marks (11, 12), and (d) the sensor (2).
Among the shadows of the marks (11, 12) detected by 1.22), the shadows of the left and right sides of the scan line (25) of the sensor (21, 22) following the rotation direction of the print roll (13). Shadow change calculation element (24) for detecting changes in the
(E) A shaft core drive device (17) for changing the direction of the shaft core of the print roll (13) according to the time difference signal (16) transmitted from the time difference calculation element (14), and (f) the shadow change calculation element (24). 2.) A printing device comprising a shaft moving device (27) for moving the print roll (13) in the direction of the shaft according to the shadow change signal (26) transmitted by the printer. 2. The shadow change computing element (2) according to claim 1.
4) is a mark (11) detected by the sensor (21/22).
In the shadow of (12), the amount of change (Δ) in the shadow area (A) of the left and right sides of the scan line (25) of the sensor (21, 22) following the rotation direction of the print roll (13).
The printing apparatus according to claim 1, which is an area calculation element that detects A). 3. A shadow change calculation element (2) according to claim 1.
4) is a mark (11) detected by the sensor (21/22).
In the shadow of (12), the amount of change in the length (L) of the shadow on the left and right sides of the scanning line (25) of the sensor (21, 22) following the rotation direction of the print roll (13) ( Δ
The printing apparatus according to claim 1, which is an area calculation element that detects L). 4. The print roll (1) according to claim 1.
3. The printing apparatus according to claim 1, wherein 3) is a printing mesh cylinder roll, and the marks (11, 12) are drawn by the blocked ink permeable mesh holes. 5. A mark (11, 12) drawn by an ink permeable mesh hole is provided at the left and right ends of the peripheral surface, and the mesh hole of the mark (11, 12) is closed, and the mark (11, 12) is closed. 11/12) forms a pointed shape in the same direction as the axis of the print roll, and the length (L) of the mark (11/12) in the rotation direction of the print roll (13) is the print roll (13). A textile mesh cylinder roll characterized in that it gradually becomes shorter as it goes to one side in the direction of the shaft center. 6. The mark (11.12) according to claim 5.
Is a triangular mesh, and the textile mesh cylinder roll according to claim 5.